JP2021147826A - Measurement method, measurement apparatus, measurement system, and measurement program - Google Patents

Abstract

To provide a measurement method for calculating an action to be applied when a moving body passes through each of observation points of a structure in consideration of chronological change of state of the structure.SOLUTION: A measurement method includes: a step S2 of acquiring physical quantities in first to N-th observation points of a structure arranged along a second direction which intersects with a first direction in which a moving body moves on the structure, on the basis of observation information obtained by an observation apparatus; a step S3 of calculating actions x1 to xN in the first to N-th observation points, wherein the physical quantity in the i-th observation point is equal to the sum of values of functions yi1 to yiN when yij is a function indicating correlation between the action xj in the j-th observation point and an action applied in the i-th observation point by the action xj; a step S6 of determining whether the moving body moved on the structure alone; and a step S8 of updating a value of a coefficient of the function yij when a determination is made that the moving body moved on the structure alone.SELECTED DRAWING: Figure 18

Description

The present invention relates to a measuring method, a measuring device, a measuring system and a measuring program.

In Patent Document 1, the axle load of a large vehicle passing through a bridge is important information for predicting damage to the bridge in maintaining the bridge, and the main body of the bridge is used to measure the axle load. Weight In Motion, a method for continuously measuring the strain value when the vehicle passes from a strain gauge installed on the girder and calculating the axle load, has been proposed, and is based on the strain waveform measured by the strain gauge placed on the main girder of the bridge. A bridge-passing vehicle monitoring system that measures the vehicle weight of a vehicle passing through a bridge is described. Specifically, the bridge-passing vehicle monitoring system arranges a strain gauge, detects the passage timing of the axle from the strain waveform measured by the strain gauge, calculates the axle-to-axle ratio of the vehicle, and calculates the axle-to-axle ratio and shaft. The inter-axle distance, vehicle speed, and vehicle type of the vehicle are specified by comparing with the inter-axle ratio calculated from the inter-axle distance registered in the inter-axle distance database. In addition, the bridge passing vehicle monitoring system generates a strain waveform in which the reference axis heavy strain waveform is arranged on the time axis according to the passage timing of the axle, and the reference axis heavy strain waveform and the strain waveform measured by the strain gauge are combined. Calculate the axial weight of each axis by comparison. Then, the bridge passing vehicle monitoring system calculates the vehicle weight by summing the axle loads of each shaft.

JP-A-2009-237805

When the vehicle travels on the bridge, the bridge floor is displaced and tilted in the width direction at the same time as the subsidence displacement in the vehicle traveling direction. This means that when a vehicle passes an observation point, not only the effect is exerted on the observation point, but also on other observation points. The action of each observation point changes according to the number of vehicles traveling on the bridge, the weight of each vehicle, the lane in which each vehicle travels, etc. Therefore, in order to perform accurate measurement, the vehicle must be at each observation point. It is required to calculate the action of the observation point when passing through the station separately from other actions. Furthermore, since the state of the bridge changes over time depending on the weight and number of vehicles traveling on the bridge, there is also a relationship between the action when the vehicle passes the observation point and the action that the action has on other observation points. It changes over time.

In the system described in Patent Document 1, it is possible to measure the vehicle weight of a vehicle, but in consideration of changes in the state of a structure such as a bridge over time, a moving body such as a vehicle can measure each observation point of the structure. The action of the observation point when passing cannot be calculated separately from other actions.

One aspect of the measurement method according to the present invention is
For an integer N of 2 or more, at least one observation device for observing the first to Nth observation points of the structure arranged along the second direction in which the moving body intersects the first direction in which the structure moves. The physical quantity acquisition step of acquiring the physical quantity of the first to Nth observation points based on the observation information by
For any integer i of 1 or more and N or less and any integer j of 1 or more and N or less, the action x _j of the first observation point and the action x j of the action x _j on the i-th observation point. Assuming that the physical quantity of the i-th observation point acquired in the physical quantity acquisition step is equal to the sum of the values of the _{functions y i1 to y iN , where y ij} is the function showing the correlation of the above, in the physical quantity acquisition step. obtained on the basis of the physical quantity of the observation point of the first to N, the effect calculation step of calculating the effect x ₁ ~x _N observation points of the first to N,
A single movement determination step for determining whether or not the moving body has moved the structure independently, and
When it is determined in the independent movement determination step that the moving body has moved the structure independently, the physical quantity of the first to Nth observation points and the action of the _{first to Nth observation points x 1} It includes a coefficient value update step of updating the coefficient value of the function y _{ij based on ~ x N.}

One aspect of the measurement method is
An abnormality determination step for determining an abnormality of the structure may be included based on the time series of the value of the coefficient updated in the coefficient value update step.

One aspect of the measurement method is
When the structure is determined to be abnormal in the abnormality determination step, a notification step for notifying information prompting the inspection of the structure may be included.

In one aspect of the measurement method
The physical quantity of the first to Nth observation points acquired in the physical quantity acquisition step may be the physical quantity in the third direction intersecting the first direction and the second direction, respectively.

In one aspect of the measurement method
For an integer M larger than the integer N, the observation points N + 1 to M of the structure are arranged in the fourth direction intersecting the first direction.
For an integer L larger than the integer M, the observation points M + 1 to L of the structure are arranged in the fifth direction intersecting the first direction.
In the single movement determination step, the moving body is the observation point of the N + k for an arbitrary integer k of 1 or more and MN or less, and an arbitrary integer m of 1 or more and LM or less and different from k. If no other moving object is moving between the N + m observation point and the M + m observation point while moving between the M + k observation point and the M + k observation point, the moving body alone said. It may be determined that the structure has been moved.

In one aspect of the measurement method
In the single movement determination step, for any integer i of 1 or more and N or less, the _{physical quantity calculated from the action x i} of the observation point i and the observation of the i acquired in the physical quantity acquisition step. When the physical quantity of the point is close to the physical quantity, it may be determined that the moving body has moved the structure by itself.

In one aspect of the measurement method
For an integer M larger than the integer N, the observation points N + 1 to M of the structure are arranged in the fourth direction intersecting the first direction.
For an integer L larger than the integer M, the observation points M + 1 to L of the structure are arranged in the fifth direction intersecting the first direction.
In the single movement determination step, the moving body is the observation point of the N + k for an arbitrary integer k of 1 or more and MN or less, and an arbitrary integer m of 1 or more and LM or less and different from k. While moving between the observation point of the M + k and the observation point of the M + k, another moving body does not move between the observation point of the N + m and the observation point of the M + m, and is 1 or more and N or less. _{When the physical quantity calculated from the action xi of the i-} th observation point and the physical quantity of the i-th observation point acquired in the physical quantity acquisition step are close to any integer i of the above. It may be determined that the moving body has moved the structure alone.

In one aspect of the measurement method
The function y _ij may be a polynomial function of the action x _j.

In one aspect of the measurement method
The structure has first to Nth paths through which the moving body can move.
The first to Nth observation points may be associated with the first to Nth paths.

In one aspect of the measurement method
The structure has first to Nth paths through which the moving body can move.
The N + 1 to M observation points are associated with the first to Nth paths and are set at the first end of the path.
The M + 1 to L observation points may be associated with the first to Nth paths and may be set at the second end of the path.

In one aspect of the measurement method
The physical quantity of the first to Nth observation points acquired in the physical quantity acquisition step may be a displacement or a load due to the moving body.

In one aspect of the measurement method
The structure is a superstructure of a bridge and
The superstructure is a structure passed to any one of adjacent abutments and piers, two adjacent abutments, or two adjacent piers.
Both ends of the superstructure are located at the positions of the adjacent abutments and piers, the positions of the two adjacent abutments, or the positions of the two adjacent piers.
The bridge may be a road bridge or a railway bridge.

In one aspect of the measurement method
The moving vehicle may be a railroad vehicle, an automobile, a tram, a construction vehicle, or a military vehicle.

In one aspect of the measurement method
The observation device for observing the first to Nth observation points may be an acceleration sensor.

In one aspect of the measurement method
The observation device for observing the first to Nth observation points is a contact type displacement meter, a ring type displacement meter, a laser displacement meter, a pressure sensor, a displacement measurement device by image processing, or a displacement measurement device by optical fiber. May be good.

In one aspect of the measurement method
The observation device for observing the N + 1 to M th observation points and the observation device for observing the M + 1 to L th observation points may be an acceleration sensor.

In one aspect of the measurement method
The observation device for observing the N + 1 to Mth observation points and the observation device for observing the M + 1 to Lth observation points may be an impact sensor, a microphone, a strain gauge, or a load cell.

In one aspect of the measurement method
The structure may be a structure in which BWIM (Bridge Weigh in Motion) functions.

One aspect of the measuring device according to the present invention is
For an integer N of 2 or more, at least one observation device for observing the first to Nth observation points of the structure arranged along the second direction in which the moving body intersects the first direction in which the structure moves. A physical quantity acquisition unit that acquires the physical quantities of the first to Nth observation points based on the observation information obtained by
For any integer i of 1 or more and N or less and any integer j of 1 or more and N or less, the action x _j of the first observation point and the action x j of the action x _j on the i-th observation point. when the function indicating the correlation of the y _ij, the physical quantity of the observation point of the i-th said physical quantity acquisition unit has acquired, as equal to the sum of the values of the function y _i1 ~y _iN, said physical quantity obtaining unit based on the physical quantity of the observation point of the acquired first to N, a working calculator for calculating the effects x ₁ ~x _N observation points of the first to N,
A single movement determination unit that determines whether or not the moving body has moved the structure independently,
When the independent movement determination unit determines that the moving body has moved the structure independently, the physical quantity of the first to Nth observation points and the action x of the first to Nth observation points. A coefficient value update unit for updating the coefficient value of the function y _{ij based on 1 to} x _{N is included.}

One aspect of the measurement system according to the present invention is
One aspect of the measuring device and
The observation device is provided.

One aspect of the measurement program according to the present invention is
For an integer N of 2 or more, at least one observation device for observing the first to Nth observation points of the structure arranged along the second direction in which the moving body intersects the first direction in which the structure moves. The physical quantity acquisition step of acquiring the physical quantity of the first to Nth observation points based on the observation information by
For any integer i of 1 or more and N or less and any integer j of 1 or more and N or less, the action x _j of the first observation point and the action x j of the action x _j on the i-th observation point. Assuming that the physical quantity of the i-th observation point acquired in the physical quantity acquisition step is equal to the sum of the values of the _{functions y i1 to y iN , where y ij} is the function showing the correlation of the above, in the physical quantity acquisition step. obtained on the basis of the physical quantity of the observation point of the first to N, the effect calculation step of calculating the effect x ₁ ~x _N observation points of the first to N,
A single movement determination step for determining whether or not the moving body has moved the structure independently, and
When it is determined in the independent movement determination step that the moving body has moved the structure independently, the physical quantity of the first to Nth observation points and the action of the _{first to Nth observation points x 1} A computer is made to execute a coefficient value update step of updating the coefficient value of the function y _ij based on ~ x _N.

The figure which shows the structural example of the measurement system in 1st Embodiment. The figure which shows the arrangement example of a sensor and an observation point. The figure which shows the arrangement example of a sensor and an observation point. Explanatory drawing of acceleration detected by an accelerometer. The figure which shows the arrangement example of a sensor and an observation point. The figure which shows the arrangement example of a sensor and an observation point. The figure which shows an example of the acceleration detected by each sensor. Shows an example of correlation between effect of acting x ₁ and operation x ₁ observation point R ₁ is on the observation point R _2. The figure which shows an example of the displacement of an observation point when a vehicle travels alone. The figure which shows an example of the displacement of the observation point calculated from the action with respect to FIG. The figure which shows an example of the displacement of the observation point when two vehicles run side by side. The figure which shows an example of the displacement of the observation point calculated from the action with respect to FIG. The figure which shows an example of the correlation between the observed displacement and the displacement calculated from the action. The figure which shows an example of the correlation between the observed displacement and the displacement calculated from the action. The figure which shows an example of the time series of the value of a linear coefficient. The figure which shows an example of the time series of the value of a linear coefficient. The figure which shows the example which monitored the time series of the value of a coefficient for a long time. The flowchart which shows an example of the procedure of the measurement method of 1st Embodiment. The flowchart which shows an example of the procedure of the coefficient value calculation step. The flowchart which shows an example of the procedure of the independent movement determination step. The figure which shows the structural example of the measuring apparatus in 1st Embodiment. The figure which shows the structural example of the measurement system in 2nd Embodiment. The figure which shows the arrangement example of a sensor and an observation point. The figure which shows the arrangement example of a sensor and an observation point. The figure which shows an example of axle information. The figure which shows the arrangement example of a sensor and an observation point. The figure which shows the arrangement example of a sensor and an observation point. The figure which shows an example of the acceleration detected with respect to the observation point. The figure which converted the acceleration amplitude of each time of FIG. 28 into acceleration intensity. FIG. 29 is a diagram obtained by binarizing the acceleration intensity of FIG. 29 with a predetermined threshold value. The figure which slid the pattern of the exit time with respect to FIG. The flowchart which shows an example of the procedure of the measurement method of 2nd Embodiment. The flowchart which shows an example of the procedure of the independent movement determination step in 2nd Embodiment. The figure which shows the structural example of the measuring apparatus in 2nd Embodiment. The flowchart which shows an example of the procedure of the independent movement determination step in 3rd Embodiment. The flowchart which shows an example of the procedure of the independent movement determination step in 3rd Embodiment. The flowchart which shows an example of the procedure of the measurement method of 4th Embodiment.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. The embodiments described below do not unreasonably limit the content of the present invention described in the claims. Moreover, not all of the configurations described below are essential constituent requirements of the present invention.

1. 1. First Embodiment 1-1. Measurement system In the following, a measurement system for realizing the measurement method of the present embodiment will be described by taking as an example a case where the structure is the superstructure of a bridge and the moving body is a vehicle. The vehicle passing through the bridge according to the present embodiment is a vehicle having a large weight such as a railroad vehicle, an automobile, a tram, a construction vehicle, or a military vehicle, and can be measured by BWIM (Bridge Weigh in Motion). BWIM is a technology for measuring the weight, number of axes, etc. of a vehicle passing through a bridge by measuring the deformation of the bridge by using the bridge as a "scale". The bridge superstructure, which can analyze the weight of vehicles passing by from responses such as deformation and strain, is the structure on which BWIM functions and applies the physical process between the action and response of the bridge superstructure. The BWIM system enables the measurement of the weight of vehicles passing by.

FIG. 1 is a diagram showing an example of a measurement system according to the present embodiment. As shown in FIG. 1, the measurement system 10 according to the present embodiment includes a measurement device 1 and a plurality of sensors 23 provided in the superstructure 7 of the bridge 5. Further, the measurement system 10 may have a server 2.

The bridge 5 includes an upper structure 7 and a lower structure 8, and the upper structure 7 includes a bridge floor 7a composed of a floor plate F, a main girder G, a horizontal girder (not shown), and a bearing 7b. The substructure 8 includes a pier 8a and an abutment 8b. The superstructure 7 is a structure passed to any one of an adjacent abutment 8b and a pier 8a, two adjacent abutments 8b, or two adjacent abutments 8a. Both ends of the superstructure 7 are located at the positions of the adjacent abutments 8b and the piers 8a, the positions of the two adjacent abutments 8b, or the positions of the two adjacent abutments 8a.

The measuring device 1 and each sensor 23 are connected by, for example, a cable (not shown) and communicate with each other via a communication network such as CAN (Controller Area Network). Alternatively, the measuring device 1 and each sensor 23 may communicate with each other via a wireless network.

For example, each sensor 23 outputs data for calculating the displacement of the superstructure 7 due to the movement of the moving vehicle 6. In the present embodiment, each sensor 23 is an acceleration sensor, and may be, for example, a crystal acceleration sensor or a MEMS (Micro Electro Mechanical Systems) acceleration sensor.

In the present embodiment, each sensor 23 is installed at the central portion of the superstructure 7 in the longitudinal direction. However, each sensor 23 only needs to be able to detect the acceleration for calculating the displacement of the superstructure 7, and its installation position is not limited to the central portion of the superstructure 7.

The floor plate F, main girder G, and the like of the superstructure 7 are bent downward in the vertical direction by the load of the vehicle 6 traveling on the superstructure 7. Each sensor 23 detects the acceleration of the deflection of the floor plate F and the main girder G due to the load of the vehicle 6 traveling on the superstructure 7.

The measuring device 1 calculates the displacement of the deflection of the superstructure 7 due to the traveling of the vehicle 6 based on the acceleration data output from each sensor 23. Further, the measuring device 1 calculates the load of the vehicle 6 traveling on the superstructure 7 from the calculated displacement.

The measuring device 1 and the server 2 can communicate with each other via, for example, a wireless network of a mobile phone and a communication network 4 such as the Internet. The measuring device 1 transmits information such as the time when the vehicle 6 travels on the superstructure 7 and the displacement of the superstructure 7 due to the traveling of the vehicle 6 to the server 2. The server 2 may store the information in a storage device (not shown), and may perform processing such as monitoring an overloaded vehicle or determining an abnormality in the superstructure 7 based on the information.

In the present embodiment, the bridge 5 is a road bridge, for example, a steel bridge, a girder bridge, an RC (Reinforced-Concrete) bridge, or the like.

2 and 3 are views showing an example of installation of each sensor 23 in the superstructure 7. Note that FIG. 2 is a view of the superstructure 7 viewed from above, and FIG. 3 is a cross-sectional view of FIG. 2 cut along the line AA.

As shown in FIGS. 2 and 3, the superstructure 7, N-number of lanes L ₁ ~L N as first through path of the first N of the vehicle 6 is moving body can _move, and the K main girder It has G _{1 to} G _K. Here, N is an integer of 2 or more, and K is an integer of 1 or more. In the example of FIG. 2 and FIG. 3, the position of the main girder _G 1 ~G _K is consistent with the position of each boundary of the lane _L 1 ~L _N, it is a N = K-1, the main girder The positions of _{G 1 to} G _K do not have to coincide with the positions of the boundaries of _{lanes L 1 to} L _{N, and N ≠ K-1.}

In the example of FIG. 2 and FIG. 3, in the longitudinal direction of the central portion CA of the superstructure 7, the sensor 23 is provided in each of the main girder G ₁ ~G _K-1. In the examples of FIGS. 2 and 3, N = K-1 and the main girder G _K is not provided with the sensor 23, but the main girder G _K is provided with the sensor 23 and the main girders G _{1 to} G _{K- The} sensor 23 may not be provided in any one of 1. Alternatively, an N = K, may be a sensor 23 is provided in each of the main girder _G 1 ~G _K.

If each sensor 23 is provided on the floor plate F of the superstructure 7, it may be destroyed by a traveling vehicle, and the measurement accuracy may be affected by the local deformation of the bridge floor 7a. Therefore, in the present embodiment, the measurement accuracy may be affected. in the example of FIG. 2 and FIG. 3, each sensor 23 is provided on the main girder _{G 1 ~G K-1} of the superstructure 7.

In the present embodiment, in association with the N sensor 23 are N observation points R ₁ to R _N are set, respectively. Observation point R ₁ to R _N is an N-number of observation points of the superstructure 7 arranged along the second direction intersecting the first direction in which the vehicle 6 moves the superstructure 7. In the examples of FIGS. 2 and 3, for each integer j of 1 or more and N or less, the observation point R _j is the floor plate F in the central portion CA, which is vertically upward of the sensor 23 provided on the _{main girder G j.} It is set to the position of the surface of. That is, the sensor 23 provided on the _{main girder G j} is an observation device for observing the _{observation point R j.} Sensor 23 for observing the observation point R _j is, may be provided an acceleration occurring in the observation point R _j by the running of the vehicle 6 to the detectable position, it is preferably provided in a position closer to the observation point R _j .. Thus, observation points _R 1 to R _N is in the N sensor 23 and one-to-one relationship.

In this embodiment, N number of observation points _R 1 to R _N are provided, respectively associated with the lane _L 1 ~L _N. In the example of FIGS. 2 and 3, the first direction, X direction along the lane L ₁ ~L _N of the superstructure 7, i.e., in the longitudinal direction of the superstructure 7. The second direction is the Y direction orthogonal to the X direction in the plane of the superstructure 7 on which the vehicle 6 travels, that is, the width direction of the superstructure 7. However, the second direction does not have to be orthogonal to the first direction. For example, it may be different distances from one end of the superstructure 7 to the observation point R ₁ to R _N. Incidentally, observation points R ₁ to R _N is an example of each of the "first observation point" - "observation point of the N".

The number and installation positions of the sensors 23 are not limited to the examples shown in FIGS. 2 and 3, and various modifications can be performed.

The measuring device 1 acquires acceleration in a third direction that intersects the X direction, which is the first direction, and the Y direction, which is the second direction, based on the acceleration data output from each sensor 23. Observation point R ₁ to R _N are so bent in a direction orthogonal to the X and Y directions, the measuring device 1, in order to accurately calculate the magnitude of the acceleration of deflection, perpendicular to the X and Y directions It is desirable to acquire the acceleration in the third direction, that is, in the normal direction of the floor plate F.

FIG. 4 is a diagram illustrating the acceleration detected by the sensor 23. The sensor 23 is an acceleration sensor that detects acceleration generated in each of the three axes orthogonal to each other.

To detect the acceleration of deflection of the running due to the observation point R ₁ to R _N of the vehicle 6, each sensor 23, x-axis is the three detection axes, y-axis, of the z-axis, one axis is a first direction And it is installed so as to intersect the second direction. In the examples of FIGS. 2 and 3, since the first direction is the X direction and the second direction is the Y direction, each sensor 23 is installed so that one axis intersects the X direction and the Y direction. Will be done. Observation point R ₁ to R _N are so bent in a direction orthogonal to the X and Y directions, in order to accurately detect the acceleration of deflection, ideally, each sensor 23, a one-axis X direction and It is installed in a direction orthogonal to the Y direction, that is, in the normal direction of the floor plate F.

However, when each sensor 23 is installed in the superstructure 7, the installation location may be tilted. In the measuring device 1, even if one of the three detection axes of each sensor 23 is not installed in the normal direction of the floor plate F, the error is small and can be ignored because it is generally oriented in the normal direction. Further, in the measuring device 1, even if one of the three detection axes of each sensor 23 is not installed in the normal direction of the floor plate F, the three axes that combine the accelerations of the x-axis, y-axis, and z-axis are combined. The combined acceleration can correct the detection error due to the inclination of each sensor 23. Further, each sensor 23 may be a uniaxial acceleration sensor that detects acceleration generated in a direction substantially parallel to at least the vertical direction or acceleration in the normal direction of the floor plate F.

Hereinafter, the details of the measurement method of the present embodiment executed by the measurement device 1 will be described.

1-2. When calculating the vehicle 6 action has traveled lane L _1, the load by the vehicle 6, the working x ₁ occur at the observation point R _1. Therefore, the observation point R ₁ is displaced by the action x _1. At this time, if the traveling superstructure 7 vehicle 6 by itself, effects produced at the observation point R ₂ to R _N by a load due to vehicle running lane L ₂ ~L _N is zero. However, since the effect of acting _{x 1} is on the observation point _R 2 to R _N occurs, so that also displaced each observation point _R 2 to R _N. Therefore, not only the sensor 23 for observing the observation point R _1, N-1 pieces of sensor 23 for observing the observation point R ₂ to R _N, respectively also, to detect the acceleration generated by the vehicle traveling in the lane L ₁ Become.

As an example, FIG. 5 and FIG. 6 shows an example of arrangement of each sensor 23 and the observation point R _1, R ₂ in the case of N = 2, in Figure 7, in the case of the arrangement example shown in FIGS. 5 and 6, An example of the acceleration detected by each sensor 23 is shown.

FIG. 5 is a view of the superstructure 7 viewed from above, and FIG. 6 is a cross-sectional view of FIG. 5 cut along the line AA. In the example of FIGS. 5 and 6, two sensors 23 are provided respectively on the main girder G _1, G ₃ at the center CA of the upper structure 7. Further, the observation point R _{1 corresponding to the lane L 1} is set at the position of the surface of the floor plate F in the vertically upward direction of the sensor 23 provided on the main girder G ₁ , and the observation point R _{2 corresponding to the lane L 2 is set.} but it is set to a position of the surface of the floor F in the vertically upward direction of the sensor 23 provided on the main girder G _3. The sensor 23 provided on the main girder G _{1 observes the observation point R 1,} and the sensor 23 provided on the main girder G ₃ observes the observation point R ₂ .

Figure 7 is a diagram showing an example of acceleration data output from each sensor 23 when the vehicle 6 is traveling in the lane L ₁ alone. Each waveform in FIG. 7 is a waveform obtained by filtering each acceleration data in order to clarify the peak.

Peak PK1 of the acceleration data output from the sensor 23 for observing the observation point R ₁ represents the passage of the axle of the vehicle 6.

Peak of the acceleration data output from the sensor 23 for observing the observation point _{R 1} PK1 corresponds to the action _{x 1} observation point _{R 1} by the vehicle 6. On the other hand, the peak PK2 of the acceleration data output from the sensor 23 for observing the observation point R ₂ are working x ₁ observation point R ₁ by the vehicle 6 corresponds to the action on the observation point R _2. Since the vehicle 6 is traveling lane _{L 1} alone, the peak PK1 is greater than the peak PK2.

Assuming that the other vehicle 6 when the vehicle 6 is traveling lanes L ₁ has run parallel lanes L _2, sensor 23 for observing the observation point R ₁ is observation point R ₁ by the vehicle 6 traveling on the lane L ₁ The acceleration corresponding to the sum of the action x _{1 of the above} and the action x _{2 of the observation point R 2} by another vehicle 6 traveling in the lane L ₂ on the observation point R _{1 is detected.} Similarly, the sensor 23 for observing the observation point _{R 2} are the working _{x 2} observation point _{R 2} in accordance with another vehicle 6 traveling on the lane _{L 2,} the action of the observation point _{R 1} by the vehicle 6 traveling on the lane _{L 1} The acceleration corresponding to the sum of the action of _{x 1} on the observation point R _{2 will be detected.} Therefore, when two vehicles 6 run in parallel, the peak PK1 and PK2 are all larger than the example of FIG. 7, but the magnitude relationship between the peak PK1 and the peak PK2 may not change. Moreover, since the sizes of the peak PK1 and PK2 change depending on the weight of the vehicle 6, a simple comparison between the peak PK1 and the peak PK2 shows whether one vehicle 6 traveled alone or two vehicles 6 traveled in parallel. I can't tell if I did.

On the other hand, when the vehicle 6 travels alone as in the example of FIG. 7, the waveforms of the accelerations detected by the sensors 23 are similar to each other although their peaks are different from each other. That is, for any integer j, i of 1 or more and N or less, the action x _j of the observation point R _{j when the vehicle 6 travels in the lane L j,} and the action x j of the action x _j on the observation point R _i. There is a correlation between them. Therefore, in this embodiment, the measuring apparatus 1 uses this correlation, to calculate the effect _x 1 ~x _N, displacement or of the superstructure 7 by the action _x 1 ~x _N, lane _L 1 ~L _N The load due to the traveling vehicle 6 is calculated.

First, a working _{x j} of the observation point _{R j} when the vehicle 6 is traveling lane _{L j,} action _{x j} observation point _{R j} is a function _{y ij} showing a correlation between the action on the observation point _{R i,} wherein It is defined as (1). j and i are arbitrary integers of 1 or more and N or less, respectively. In the equation (1), a _ij is a first-order coefficient and _bij is a zero-order coefficient. As shown in the equation (1), the function y _ij is a polynomial function of action x _j , and specifically, is a first-order polynomial function.

For example, as an example, as in the arrangement example shown in FIGS. 5 and 6, the case of N = 2 will be taken as an example. When the vehicle 6 has traveled the lane _{L 1,} action effects _{x 1} of the physical quantity acting _{x 1} is observed to act at the observation point _{R j} lane _{L 1} and lane _{L 1} is the observation point _{R 2} lane _{L 2} The correlation with the physical quantity observed in the above is shown by a first-order polynomial function as shown in FIG.

As an example, the working _{x 1} observation point _{R 1,} acting _{x 1} functions _{y i1} showing a correlation between the action on the observation point _{R i} is defined by the equation (2).

More specifically, the working _{x 1,} function _y 11 _{~y N1} showing a correlation between action acting _{x 1} is on the observation point _R 1 to R _N is as each formula (3).

Next, as shown in Equation (4), the displacement _{g i} of the observation point _{R i} is assumed to be equal to the sum of the values of the function _y i1 _{~y iN.}

At this time, from equation (1) and (4), the displacement vector g for the displacement _g 1 to g _N observation point _R 1 to R _N as elements is expressed by the equation (5).

In the equation (5), each element y _k of the vector Y is defined as in the equation (6). k is any integer greater than or equal to 1 and less than or equal to N.

Displacement vector u to actually observed by each of the displacement u ₁ ~u _N elements of observation points R ₁ to R _N is, assuming equal displacement vector g, the formula (7) is obtained. Displacement _u 1 ~u _N is, for example, N number of sensors 23 corresponding to the observation point _R 1 to R _N is obtained by integrating twice each acceleration detected.

Equation (7) is modified to obtain Equation (8).

If the 1st-order coefficient matrix A and the 0th-order coefficient matrix B are known, by substituting the displacement vector u obtained by the observation into the equation (8), an action vector having _{unknown actions x 1 to x N as elements.} X is calculated.

As an example, as in the exemplary arrangement shown in FIG. 5 and FIG. 6, by way of the case of N = 2 as an example, a process of deriving the effect x _1, x ₂ from the equation (8) in detail. Since N = 2, the equation (9) can be obtained from the equation (8).

Equation (9) is modified to obtain Equation (10).

From the equation (10), the actions x ₁ and x ₂ are calculated as the equations (11) and (12), respectively.

9, FIG. 5 and in the case of the arrangement example shown in FIG. 6 shows an example of displacement of the observation point R _1, R ₂ observed when the vehicle 6 is traveling in the lane L ₁ alone. Further, in FIG. 10, the observation point _R 1 which is calculated from the action _x 1, _{x 2} obtained by equation (11) and (12) with respect to the displacement of the observation point _R 1, _{R 2} shown in FIG. 9 R An example of the displacement of _{2 is shown.} In FIGS. 9 and 10, the horizontal axis is time and the vertical axis is displacement. The solid line shows the displacement of the observation point R ₁ , and the broken line shows the displacement of the observation point R ₂ .

As shown in FIG. 9, for traveling lane L ₁ vehicle 6 by itself, the displacement of the observation point R ₁ is greater than the displacement of the observation point R _2. Further, although there is no vehicle traveling in the _{lane L 2} , the displacement of the _{observation point R 2} is not zero due to the action of _{the action x 1} on the observation point R _2. Then, the time when the displacement of the _{observation point R 1 is maximized and the time when the displacement of the observation point R 2} is maximum coincide with each other. In contrast, as shown in FIG. 10, the displacement observation point R ₁ which is calculated from the action x _1, is substantially the same as the displacement of the observation point R ₁ shown in FIG. 9, is calculated from the working x ₂ The displacement of observation point R _{2 is zero.} Then, while the displacement of the observation point R ₁ shown in FIG. 10 has a peak, the displacement of the observation point R ₂ has no peak, while being specified that the vehicle 6 has traveled the lane L ₁ alone, act it is possible to calculate the load applied by vehicle 6 from the displacement of the observation point R ₁ by x _1.

In contrast, in FIG. 11, FIGS. 5 and in the case of the arrangement example shown in 6, the observation point R ₁ in which the two different vehicles 6 is observed when run in parallel lanes L _1, L _2, An example of the displacement of R _{2 is shown.} Further, in FIG. 12, the displacement of the observation point _R 1, _{R 2} shown in FIG. 11 (11) and (12) by the action _x 1, observation point is calculated from _{x 2} of _R 1, _{R 2} obtained An example of displacement is shown. In FIGS. 11 and 12, the horizontal axis is time and the vertical axis is displacement. The solid line shows the displacement of the observation point R ₁ , and the broken line shows the displacement of the observation point R ₂ .

As shown in FIG. 11, since the two vehicles 6 running parallel lanes L _1, L _2, the displacement of the observation point R ₁ is acting x ₁ caused by the load of one of the vehicle 6 traveling on the lane L ₁ The displacement is in accordance with the sum of the _{action x 2} caused by the load of the other vehicle 6 traveling in the lane L ₂ and the action on the observation point R _1. Similarly, the displacement of the observation point R ₂ are the working x _2, a displacement corresponding to the sum of the effects that action x ₁ is on the observation point R _2. Then, since the time of the two vehicles 6 travels each lane L _1, L ₂ are different, the displacement of the observation point R ₁ in the displacement becomes the maximum time the observation point R ₂ do not match the time of maximum No. On the other hand, as shown in FIG. 12, the maximum value of the displacement of the observation point R _{1 calculated from the action x 1} is smaller than the maximum value of the displacement of the _{observation point R 1 shown in FIG. 11, and the action x 2} The maximum value of the displacement of the observation point R ₂ calculated from is smaller than the maximum value of the displacement of the _{observation point R 2 shown in FIG.} Then, the displacement of the observation point _R 1, _{R 2} shown in FIG. 12 has a both peaks, together with that of the two vehicles 6 are run in parallel lanes _L 1, _{L 2} are specified, observation point _R 1, from the displacement of R _2, it can be calculated and the load on the lane L ₁ by the vehicle 6 traveling lane L _1, the load on the lane L ₂ by the vehicle 6 traveling on the lane L _2.

1-3. Determining vehicle 6 single movement of the vehicle is traveling in the one lane L _k of the lane L ₁ ~L _N alone, the other lanes condition that is not another vehicle 6 is traveling, that the parallel running vehicle There are cases where no conditions are met. k is an integer of 1 or more and N or less. Vehicle 6 travels lane _{L k} alone if no parallel running vehicle condition is satisfied, the action _x 1 ~x _n observation point _R 1 to R _n, with the exception of action _{x k} of the observation point _{R k} , Almost zero. For example, in the example of FIGS. 9 and 10, since the vehicle 6 is traveling lane L ₁ alone, the displacement is has a peak calculated from the action x ₁ observation point R _1, the observation point R ₂ Since the action x ₂ is almost zero, the _{displacement calculated from the action x 2} is also almost zero.

Vehicle 6 travels lane L _k alone if no parallel running vehicle condition is satisfied, the displacement u _k observed displacement u _'k calculated from the action x _k of the observation point R _k is approximated Therefore, the equation (13) is established. For working x _k and the displacement u _k is a sequence in which both the time t as a parameter, as in Equation (13), the displacement u _'k and the displacement u _k approximates at each time t.

Therefore, the measuring device 1 can determine that the vehicle 6 has traveled alone in the _{lane L k} during the period in which the equation (13) holds for _{any observation point R k.}

Specifically, the measuring apparatus 1, by the equation (14), to calculate the 'average value u _{k (t)' k_avg (t} ) displacement u of the observation points _{R k} in a given period.

Also, measuring device 1, by the equation (15), calculates the average value _{u k_avg} (t) of the displacement _u k (t) of the observation points _{R k} in a given period.

Furthermore, the measuring apparatus 1 uses the average value _{u K_avg} the 'average value u (t)' _{K_avg} displacement u (t) and displacement _u k (t) (t), the equation (16), the sample correlation Calculate the number r _k. As the average value _u 'k_avg (t) and the mean value _{u K_avg} (t) is approximated, the absolute value of the sample correlation coefficient _{r k} is a value close to 1. Moreover, as the average value _u 'k_avg (t) and the mean value _{u K_avg} (t) is not approximated, a value close to 0 is the absolute value of the sample correlation coefficient _{r k.}

The measuring apparatus 1, each time the newly calculated action _x 1 ~x _n observation point _R 1 to R _n, threshold r absolute value of the predetermined sample correlation coefficient _{r k} obtained in formula (16) _It is determined that the equation (13) holds when it is larger than th.

13, in the case of the exemplary arrangement shown in FIG. 5 and FIG. 6, the displacement observed at observation point R ₁ in the case where the vehicle 6 is traveling in the lane L ₁ alone u _{1 (t)} and the working x ₁ ( shows an example of the correlation between the displacement u _{'1 (t)} calculated from t). In FIG. 13, the horizontal axis is the displacement u ₁ (t), and the vertical axis is the displacement u ' ₁ (t) _{calculated from the action x 1 (t).} The solid line 'shows the correlation between ₁ (t), the broken line and the displacement _u 1 (t) displacement u' and the displacement _u 1 (t) displacement u is a straight line obtained by linearly approximating the correlation between ₁ (t). As shown in FIG. 13, the displacement u _{1 (t)} and the displacement u _{'1 (t)} and high degree of approximation, the absolute value of the sample correlation coefficient r _k is a value close to 1.

On the other hand, in the case of the arrangement examples shown in FIGS. 5 and 6, FIG. 14, the _{displacement u 2} (t) and the action x observed at the observation point R _{2 when the vehicle 6 travels alone in the lane L 1.} shows an example of correlation between ₂ (t) displacement u _'2 is calculated from (t). 14, the horizontal axis represents the displacement _u 2 (t), the vertical axis represents the displacement u _'2 (t) calculated from the working _x 2 (t). The solid line 'shows the correlation between the ₂ (t), the broken line and the displacement _u 2 (t) displacement u' and the displacement _u 2 (t) displacement u is a straight line obtained by linearly approximating the correlation between the ₂ (t). As shown in FIG. 13, the displacement _u 2 (t) and the displacement u _'2 (t) and low degree of approximation, the absolute value of the sample correlation coefficient _{r 2} is the sample correlation coefficient _{r 1} of the example of FIG. 13 The value is closer than the absolute value.

As described above, the measuring device 1 determines that the vehicle 6 has moved the superstructure 7 independently when the equation (13) is satisfied, and when the equation (13) is not satisfied, the vehicle 6 is the superstructure 7. Can be determined not to move alone.

1-4. Update of coefficient value When it is determined that the vehicle 6 has moved the superstructure 7 alone, if the vehicle 6 _{travels in the lane L k} , the actions x _{1 to x n} are zero except for the action x _k. be. Therefore, from the equation (5), the values of the first-order coefficients a _1k , a _2k , ..., A _{Nk and} the values of the zero-order coefficients b _1k , b _2k , ..., B _Nk can be calculated.

For example, if the vehicle 6 is traveling lane L ₂ alone, the formula (5) is as shown in equation (17).

Equation (18) is obtained from equation (17).

Measuring apparatus 1, the formula (18) displacing _g 1 calculated by (t) _{to g} n (t), as compared actually observed displacement _u 1 (t) _~u n (t) and respectively The values of the first-order coefficients a ₁₂ , a ₂₂ , ..., A _{N2 and} the values of the ninth-order coefficients b ₁₂ , b ₂₂ , ..., B _N2 can be calculated.

The measuring device 1 newly calculates the values of the first-order coefficients a _1k , a _2k , ..., A _{Nk and} the values of the zero-order coefficients b _1k , b _2k , ..., B _Nk , and the first-order coefficients a _1k , The values of a _2k , ..., a _Nk and the zero-order coefficients b _1k , b _2k , ..., b _Nk are updated with the calculated new values.

The first-order coefficient matrix A and the zero-order coefficient matrix B are updated semi-occasionally due to the stochastically generated independent running of the vehicle 6. At night when the number of vehicles traveling on the superstructure 7 decreases, the equation (13) is likely to hold, and for example, it can be expected that the value of each coefficient is updated at least once a day.

1-5. Abnormality determination Each coefficient value of the first-order coefficient matrix A and the ninth-order coefficient matrix B can be considered as information on the strength of the bridge bed 7a. It can be considered that this indicates the ease or difficulty of deformation of the cross section of the plane formed by the width direction of the bridge floor 7a and the normal direction of the bridge floor 7a due to the load applied on the bridge floor 7a. can. Therefore, the measuring device 1 can monitor the fluctuation of the mechanical strength of the bridge floor 7a and determine the abnormality of the superstructure 7 by monitoring the time series of each coefficient value.

As an example, when N = 3, the first-order coefficient matrix A is as shown in Eq. (19).

FIG. 15 shows an example of a time series of the values of the _{linear coefficients a 12} and a ₁₃ in the equation (19). Further, FIG. 16 shows an example of a time series of the values of the _{linear coefficients a 31} and a ₃₂ in the equation (19). FIG. 17 shows an example in which a time series of values of a predetermined coefficient is monitored for a long period of time. In FIGS. 15, 16 and 17, the horizontal axis is a time series number and the vertical axis is a coefficient value. As shown in FIGS. 15 and 16, the value of each coefficient fluctuates to some extent even in a short period of time due to environmental factors, measurement errors, etc. Therefore, the measuring device 1 causes an abnormality in the superstructure 7 even if the fluctuation occurs in a short period of time. It's difficult to judge. On the other hand, as shown in FIG. 16, in the long-term monitoring of the coefficient value, if the coefficient value gradually increases or decreases, the strength of the superstructure 7 may have changed. high. Therefore, for example, the measuring device 1 may determine that the superstructure 7 is abnormal when the amount of change in each coefficient value from the initial operation of the measuring system 10 exceeds a predetermined threshold value.

1-6. Measurement Method FIG. 18 is a flowchart showing an example of the procedure of the measurement method of the first embodiment. In this embodiment, the measuring device 1 executes the procedure shown in FIG.

As shown in FIG. 18, first, the measurement apparatus 1 obtains the displacement _u 1 ~u _N observation point _R 1 to R _N when the vehicle has traveled the superstructure 7 alone, the displacement _u 1 ~u _N based on the coefficients of the function _{y ij a ij,} it calculates the value of _{b ij} (step S1). i and j are arbitrary integers of 1 or more and N or less. The vehicle is a known mobile body different from the vehicle 6 which is an unknown mobile body. A known moving body is a moving body for which information such as load, dimensions, and number of axes is known, and an unknown moving body is a moving body for which the information is not known. ^{Specifically, the measuring device 1 calculates the inverse matrix A -1} and the zero-order coefficient matrix B of the first-order coefficient matrix A included in the above equation (8). This step S1 is a coefficient value calculation step.

Next, the measuring device 1 is based on the observation information by the N sensors 23 for observing the observation point R ₁ to R _N, the physical quantity of the observation points R ₁ to R _N when the vehicle 6 is moved superstructure 7 The displacements u _{1 to} u _N are acquired as (step S2). As described above, the N sensors 23 are each accelerometer observation information by the N sensors 23, an acceleration detection information generated in the observation point R ₁ to R _N. Then, this acceleration is an acceleration in a third direction that intersects the X direction, which is the first direction, and the Y direction, which is the second direction, respectively. The measuring device 1 integrates the accelerations in the third direction detected by each of the N sensors 23 twice to calculate the displacement vector u included in the above equation (8). Accordingly, the displacement u ₁ ~u _N as a physical quantity of the observation points R ₁ to R _N physical quantity obtaining step by the measuring apparatus 1 acquires, the third direction of displacement intersecting the X direction and the Y direction, for example, X direction And the displacement in the third direction orthogonal to the Y direction, respectively. This step S2 is a physical quantity acquisition step.

Next, the measuring apparatus 1, the displacement _{u i} of the observation point _{R i} is as equal to the sum of the values of the function _y i1 _{~y iN,} based on the displacement _u 1 ~u _N obtained in step S2, the observation point R calculating the effects _x 1 ~x _N of ₁ to R _N (step S3). i is an arbitrary integer of 1 or more and N or less. Specifically, the measuring device 1 applies the inverse matrix A ^-1 and the zero-order coefficient matrix B of the first-order coefficient matrix A calculated in step S1 and the displacement vector u calculated in step S2 to the above equation (8). Substitute to calculate the action vector X. This step S3 is an action calculation step.

Next, the measuring apparatus 1, based on the action _x 1 ~x _N calculated in step S3, and calculates the displacement u _'1 ~u' _N observation points _R 1 to R _N (step S4). For example, for each integer j of 1 or more and N or less, on the right side of the above equation (5), the _{displacement g j} calculated assuming that all the actions _{of the actions x 1 to x N} except the action x _{j are zero.} It is referred to as the displacement u _'j. This step S4 is a displacement calculation step.

Next, the measuring apparatus 1, based on the displacement u _'1 ~u' _N calculated in step S4, and calculates the load applied by vehicle 6 travels each lane _L 1 ~L _N (step S5). For one or more N or less for each integer j, since between the load by the displacement u _'j and the vehicle 6 traveling lane L _j are correlated, in a load test with advance vehicle, the coefficients of the correlation equation Calculate it. Measuring apparatus 1 can calculate the load applied by vehicle 6 traveling lane L _j by substituting the displacement u _'j to the correlation expression. This step S5 is a load calculation step.

Next, the measuring device 1 determines whether or not the vehicle 6 has moved the superstructure 7 independently (step S6). Specifically, the measuring apparatus 1 is, for one or more N or less arbitrary integer i, acquired observation point in the displacement u _'i and Step S2 are calculated from the action x _i of the observation point R _i in the step S4 when the displacement u _i of R _i approximates determines that the vehicle 6 has moved the superstructure 7 alone. This step S6 is a single movement determination step.

The measuring apparatus 1, when it is determined that the vehicle 6 has moved the superstructure 7 alone in step S6 (Y in step S7), and the displacement _u 1 of the observation point _R 1 to R _N ~u _N and acting _{x 1} Based on ~ x _N , the value of the coefficient of the _{function y ij represented by} the equation (1) is updated (step S8). Specifically, when the measuring device 1 determines that the vehicle 6 has _{traveled independently in the lane L k} , as described above, _{the values of the primary coefficients a 1k} , a _2k , ..., a _Nk and the 0th coefficient b Calculate and update the values of _1k , b _2k , ..., B _Nk. This step S8 is a coefficient value update step.

Next, the measuring device 1 determines the abnormality of the superstructure 7 based on the time series of the coefficient values updated in step S8 (step S9). As described above, the measuring device 1 determines that the superstructure 7 is abnormal when the amount of change in the coefficient value from the initial operation of the measuring system 10 exceeds a predetermined threshold value. This step S9 is an abnormality determination step.

Then, when the measuring device 1 determines in step S9 that the superstructure 7 is abnormal (Y in step S10), the measuring device 1 notifies the information prompting the inspection of the superstructure 7 (step S11). For example, the measuring device 1 notifies the server 2 or the like by transmitting information prompting the inspection of the superstructure 7. Alternatively, the measuring device 1 may notify by outputting information prompting the inspection of the superstructure 7 as information such as characters, images, and sounds. This step S11 is a notification step.

When the measuring device 1 determines in step S9 that the superstructure 7 is normal (N in step S10), the measuring device 1 does not perform the process in step S11. Further, when it is determined in step S6 that the vehicle 6 has not moved the superstructure 7 independently (N in step S7), the measuring device 1 does not perform the processes of steps S8 to S11.

Next, the measuring apparatus 1 outputs the load of the vehicle 6 traveling lane _L 1 ~L _N calculated in step S5 the server 2 (step S12). This step S12 is an output step.

The measuring device 1 repeats the processes of steps S2 to S12 until the measurement is completed (N in step S13).

FIG. 19 is a flowchart showing an example of the procedure of the coefficient value calculation step which is step S1 of FIG.

As shown in FIG. 19, first, the measurement apparatus 1 sets the integer j to 1 (step S 111), N number of sensors 23 for observing the observation point _R 1 to R _N is lane _{L j} vehicle alone Acquires the acceleration detected when the vehicle travels (step S112).

Next, the measuring apparatus 1 is to first order approximation the correlation between each of the acceleration of the acceleration and the observation point _R 1 to R _N observation point _{R j} obtained in step S12, the primary coefficient _a 1j _{~a Nj} values And the values of the 0th order coefficients b _{1j to} b _Nj are calculated (step S113).

When the integer j is not N (N in step S114), the measuring device 1 adds 1 to the integer j (step S115), and repeats the processes of steps S111 to S113.

Then, when the integer j becomes N (Y in step S114), the measuring device 1 has the _{linear coefficient matrix A having the linear coefficients a 11 to} a _NN calculated in step S113 as elements and the 0th order calculated in step S113. A 0th-order coefficient matrix B having coefficients b _{11 to} b _NN as elements is generated (step S116). The first-order coefficient matrix A and the zero-order coefficient matrix B are the matrices included in the above equation (5).

^{Finally, the measuring device 1 generates an inverse matrix A -1} of the first-order coefficient matrix A (step S117), and ends the process of the coefficient value calculation step.

FIG. 20 is a flowchart showing an example of the procedure of the independent movement determination step which is step S6 of FIG.

As shown in FIG. 20, first, the measuring device 1 sets the integer k to 1 and the integer NL to 0 (step S161), and the displacement u calculated from the action x _{k of the observation point R k. 'k} and comparing the displacement _{u k} of the observation point _{R k} (step S162).

When the displacement u _'k and the displacement _{u k} approximates (Y in step S163), the measuring apparatus 1 adds 1 to the integer NL (Step S164).

When the integer k is not N (N in step S165), the measuring device 1 adds 1 to the integer k (step S166), and repeats the processes of steps S162 to S164.

Then, when the integer k becomes N (Y in step S165), the measuring device 1 determines that the vehicle 6 has moved the superstructure 7 independently when the integer NL is 1 (Y in step S167) (step). S168), if the integer NL is not 1 (N in step S167), it is determined that the vehicle 6 has not moved the superstructure 7 by itself (step S169), and the process of the single movement determination step is terminated.

1-7. Configuration of Measuring Device FIG. 21 is a diagram showing a configuration example of the measuring device 1 according to the present embodiment. As shown in FIG. 21, the measuring device 1 includes a control unit 110, a first communication unit 120, a storage unit 130, a second communication unit 140, and an operation unit 150.

The control unit 110 calculates the displacement of the superstructure 7 based on the acceleration data output from each sensor 23 installed in the superstructure 7, updates the coefficient value of the _{function y ij, and updates the superstructure 7.} Judgment of abnormalities, etc.

The first communication unit 120 receives acceleration data from each sensor 23. The acceleration data output from each sensor 23 is, for example, a digital signal. The first communication unit 120 outputs the acceleration data received from each sensor 23 to the control unit 110.

The storage unit 130 is a memory for storing programs, data, and the like for the control unit 110 to perform calculation processing and control processing. In addition, the storage unit 130 stores programs, data, and the like for the control unit 110 to realize a predetermined application function. The storage unit 130 is composed of, for example, various IC (Integrated Circuit) memories such as ROM (Read Only Memory), flash ROM, and RAM (Random Access Memory), and a recording medium such as a hard disk and a memory card.

The storage unit 130 includes a non-volatile information storage device that is a device or medium that can be read by a computer, and various programs, data, and the like may be stored in the information storage device. The information storage device may be an optical disk such as an optical disk DVD or a CD, a hard disk drive, or various types of memory such as a card-type memory or a ROM. Further, the control unit 110 may receive various programs, data, and the like via the communication network 4 and store them in the storage unit 130.

The second communication unit 140 transmits information such as a calculation result of the control unit 110 to the server 2 via the communication network 4.

The operation unit 150 performs a process of acquiring operation data from the user and transmitting it to the control unit 110.

The control unit 110 is associated with the physical quantity acquisition unit 111, the action calculation unit 112, the displacement calculation unit 113, the load calculation unit 114, the independent movement determination unit 115, the coefficient value update unit 116, and the abnormality determination unit 117. It includes a numerical value calculation unit 118 and an output processing unit 119.

Physical quantity acquisition unit 111, based on the observation information by the N sensors 23 for observing the observation point R ₁ to R _N, the displacement as a physical quantity of the observation points R ₁ to R _N when the vehicle 6 is moved superstructure 7 Get u _{1 to} u _N. That is, the physical quantity acquisition unit 111 performs the processing of the physical quantity acquisition step in FIG. _{The displacements u 1 to} u _N acquired by the physical quantity acquisition unit 111 are stored in the storage unit 130.

Effect calculation unit 112 for one or more N or less arbitrary integer i, the displacement _{u i} of the observation point _{R i} is as equal to the sum of the values of the function _y i1 _{~y iN,} physical quantity acquisition unit 111 acquires based on the displacement _u 1 ~u _N, it calculates the effect _x 1 ~x _N observation point _R 1 to R _N. That is, the action calculation unit 112 performs the process of the action calculation step in FIG. _{The actions x 1 to x N} calculated by the action calculation unit 112 are stored in the storage unit 130.

Displacement calculating unit 113, based on the action _x 1 ~x _N which acts calculating unit 112 is calculated, it calculates the displacement u _'1 ~u' _N observation points _R 1 to R _N. That is, the displacement calculation unit 113 performs the processing of the displacement calculation step in FIG. Displacement u _'1 ~u' _N displacement calculating unit 113 is calculated is stored in the storage unit 130.

Load calculation unit 114, based on the displacement u _'1 ~u' _N displacement calculating unit 113 is calculated, to calculate the load applied by vehicle 6 travels each lane _L 1 ~L _N. That is, the load calculation unit 114 performs the processing of the load calculation step in FIG. Load by the vehicle 6 travels each lane _L 1 ~L _N the load calculation unit 114 has calculated is stored in the storage unit 130.

The independent movement determination unit 115 determines whether or not the vehicle 6 has moved the superstructure 7 independently. Specifically, alone movement determination section 115, the displacement calculating section 113 and the displacement _{u i} of the observation point _{R i} which acts displacement calculated from _{x i} u _'i and the physical quantity acquisition unit 111 acquires the observation point _{R i} In the case of approximation, it is determined that the vehicle 6 has moved the superstructure 7 by itself. That is, the independent movement determination unit 115 performs the processing of the independent movement determination step in FIG. The information of the determination result by the independent movement determination unit 115 is stored in the storage unit 130.

Coefficient value update section 116 alone move judgment unit 115, when it is determined that the vehicle 6 has moved the superstructure 7 alone, the displacement _u 1 ~u observation point _R 1 to R _N physical quantity acquisition unit 111 acquires based on the action _x 1 ~x _{N where N} and acting calculating unit 112 calculates and updates the value of the coefficient of the function _{y ij} represented by the formula (1). Specifically, the coefficient value update section 116, if the vehicle 6 is determined to have traveled a lane _{L k} alone, as described above, linear coefficient _{a 1k,} a 2k, _..., the value of _{a Nk} and 0-order Calculate and update the values of the coefficients b _1k , b _2k , ..., B _Nk. That is, the coefficient value updating unit 116 performs the processing of the coefficient value updating step in FIG. The coefficient value stored in the storage unit 130 is updated by the value calculated by the coefficient value updating unit 116.

The abnormality determination unit 117 determines the abnormality of the superstructure 7 based on the time series of the coefficient values updated by the coefficient value update unit 116. For example, as described above, the abnormality determination unit 117 determines that the superstructure 7 is abnormal when the amount of change in the coefficient value from the initial operation of the measurement system 10 exceeds a predetermined threshold value. That is, the abnormality determination unit 117 performs the processing of the abnormality determination step in FIG. The information of the determination result by the abnormality determination unit 117 is stored in the storage unit 130.

The second communication unit 140 may function as a notification unit that notifies the server 2 of information prompting the inspection of the superstructure 7 when the abnormality determination unit 117 determines that the superstructure 7 is abnormal. Further, the measuring device 1 has a display unit (not shown) such as a display, and the display unit functions as a notification unit for notifying by outputting information prompting the inspection of the superstructure 7 as character or image information. May be good. Alternatively, the measuring device 1 has a sound output unit (not shown) such as a speaker, and the sound output unit functions as a notification unit that notifies by outputting information prompting the inspection of the superstructure 7 as sound information. May be good.

Coefficient value calculation unit 118 obtains one or more N or less arbitrary integer i, with respect to j, the displacement _u 1 ~u _N observation point _R 1 to R _N when the vehicle has traveled the superstructure 7 alone Then, based on the displacements u _{1 to} u _N , the values of the coefficients a _ij and b _{ij of the function y ij} are calculated. That is, the coefficient value calculation unit 118 performs the processing of the coefficient value calculation step in FIG. The values of the first-order coefficients a _{11 to} a _{NN and} the values of the zero-order coefficients b _{11 to} b _NN calculated by the coefficient value calculation unit 118 are stored in the storage unit 130.

Output processing unit 119, the load of the vehicle 6 traveling lane L ₁ ~L _N the load calculation unit 114 calculates, performs a process of outputting to the server 2 via the second communication unit 140. That is, the output processing unit 119 processes the output step shown in FIG.

For example, the control unit 110 calculates the displacement of the superstructure 7 by the unknown vehicle 6 based on the operation data from the operation unit 150 _{, updates the value of the coefficient of the function yij} , and determines the abnormality of the superstructure 7. The first mode to be performed and the second mode for calculating the _{first-order coefficients a 11 to} a _NN and the zero-order coefficients b _{11 to} b _{NN are switched.} For example, after N sensors 23 are installed in the superstructure 7, a load test is performed by a plurality of vehicles with the control unit 110 set to the second mode, and after the load test is completed, the control unit 110 is subjected to a load test. It is set to the first mode.

In the present embodiment, the control unit 110 is a processor that executes various programs stored in the storage unit 130, and by executing the measurement program 131 stored in the storage unit 130, the physical quantity acquisition unit 111 and the action calculation Each function of the unit 112, the displacement calculation unit 113, the load calculation unit 114, the independent movement determination unit 115, the coefficient value update unit 116, the abnormality determination unit 117, the coefficient value calculation unit 118, and the output processing unit 119 is realized. In other words, the measurement program 131 is a program that causes the measuring device 1 which is a computer to execute each procedure of the flowchart shown in FIG.

In the processor, for example, the functions of each part may be realized by individual hardware, or the functions of each part may be realized by integrated hardware. For example, a processor includes hardware, which hardware can include at least one of a circuit that processes a digital signal and a circuit that processes an analog signal. The processor may be a CPU (Central Processing Unit), a GPU (Graphics Processing Unit), a DSP (Digital Signal Processor), or the like. However, the control unit 110 may be configured as a custom IC (Integrated Circuit) such as an ASIC (Application Specific Integrated Circuit) to realize the functions of each part, or may realize the functions of each part by the CPU and the ASIC. good.

The control unit 110 does not have to include the load calculation unit 114. Further, the control unit 110 does not have to include the abnormality determination unit 117. For example, the measuring device 1 may transmit the updated time series of the coefficient values to the server 2, and the server 2 may determine the abnormality of the superstructure 7 based on the time series of the coefficient values. Further, the control unit 110 does not have to include the coefficient value calculation unit 118. For example, the server 2 or another device _{performs a process of calculating the values of the first-order coefficients a 11 to} a _{NN and} the values of the zero-order coefficients b _{11 to} b _NN , and stores these values in the storage unit 130 of the measuring device 1. You may memorize it.

1-8. In the measurement method of the first embodiment described above advantageous effects, the measuring device 1 is based on the observation information by the N sensors 23 for observing the observation point R ₁ to R _N, observation points of R ₁ to R _N The displacements u _{1 to} u _N are acquired as physical quantities. When the the action _{x j} observation point _{R j,} the function indicating the correlation between action acting _{x j} is on observation point _{R i} was _{y ij,} the measuring device 1, the displacement _{u i} is a function _{y i1} ~ as equal to the sum of the values of y _iN, by the equation (8), based on the displacement _u 1 ~u _N, calculates the effect _x 1 ~x _N observation point _R 1 to R _N. Therefore, according to the measurement method of the first embodiment, the measuring device 1 determines the action x _{j when the moving vehicle 6 passes through the observation point R j} of the superstructure 7 which is a structure from other actions. It can be calculated separately. For example, even when a plurality of vehicles 6 running parallel multiple lanes, the measuring apparatus 1, the influence of the action of the action x _i observation point R _i by the vehicle 6 traveling on the lane L _i is on the observation point R _j By excluding it, the action x _{j of the observation point R j} by the vehicle 6 traveling in the _{lane L j} can be calculated.

Furthermore, the measuring apparatus 1 determines whether the vehicle 6 is moved to the upper structure 7 alone when it is determined that the vehicle 6 has moved the superstructure 7 alone, the displacement of the observation point R ₁ to R _N The value of the coefficient of the function y _ij is updated based on u _{1 to} u _N and the action x _{1 to x N.} Therefore, according to the measurement method of the first embodiment, the measuring device 1 considers the change over time in the state of the superstructure 7 by updating the value of the coefficient of the _{function y ij at any time, and the vehicle 6 has the superstructure.} The action x _j when passing through the observation point R _{j of} 7 can be calculated separately from other actions.

Further, according to the measurement method of the first embodiment, the measuring device 1 monitors the change over time in the state of the superstructure 7 based on the time series of the coefficient values of the _{updated function y ij, and the superstructure 1 is used.} It is possible to judge the abnormality of 7.

Further, in the measurement method of the first embodiment, the measuring device 1, based on the action _x 1 ~x _N observation point _R 1 to R _N, the displacement u _'1 ~u' observation point _R 1 to R _{N N} It is calculated, based on the displacement u _'1 ~u' _N, and calculates the load applied by vehicle 6 observation point _R 1 to R _N. Therefore, according to the measurement method of the first embodiment, the measuring device 1, based on the action x _j observation point R _j calculated separately from other effects, the observation point R _j by the running of the vehicle 6 Displacement and load can be calculated accurately. For example, even when a plurality of vehicles 6 running parallel multiple lanes, the measuring device 1, the displacement and load of the lane L _j by the vehicle 6 has been moved lane L _j can be accurately calculated. Based on this displacement and load information, for example, the measuring device 1 or the server 2 can accurately perform processing such as monitoring of an overloaded vehicle.

Further, according to the measurement method of the first embodiment, the measuring device 1 can calculate the displacement of the upper structure 7 and the load of the vehicle 6 due to the axle weight of the vehicle 6 passing through the upper structure 7, so that the upper structure can be calculated. Sufficient information can be provided for the maintenance of the bridge 5 for predicting the damage of 7.

2. Second Embodiment In the measurement method of the second embodiment, the processing of the independent movement determination step by the measuring device 1 is different from the measurement method of the first embodiment. Hereinafter, with respect to the second embodiment, the same components as those of the first embodiment are designated by the same reference numerals, and the description overlapping with the first embodiment will be omitted or simplified, and the contents different from those of the first embodiment will be mainly described. do.

2-1. Measurement system FIG. 22 is a diagram showing an example of a measurement system according to the present embodiment. As shown in FIG. 22, the measurement system 10 according to the present embodiment includes a measurement device 1, at least one sensor 21 provided in the superstructure 7 which is a structure, at least one sensor 22, and at least one sensor. 23 and. Further, the measurement system 10 may have a server 2.

The measuring device 1 and the sensors 21, 22, and 23 are connected by, for example, a cable (not shown) and communicate with each other via a communication network such as CAN (Controller Area Network). Alternatively, the measuring device 1 and the sensors 21, 22, and 23 may communicate with each other via a wireless network.

For example, each sensor 21 outputs data representing the impact of entering the superstructure 7 of the moving vehicle 6, and each sensor 22 outputs data representing the impact of exiting the superstructure 7 of the vehicle 6. do. Further, as in the first embodiment, each sensor 23 outputs data for calculating the displacement of the superstructure 7 due to the movement of the moving vehicle 6. In the present embodiment, each of the sensors 21, 22, and 23 is an acceleration sensor, and may be, for example, a crystal acceleration sensor or a MEMS acceleration sensor.

In this embodiment, each sensor 21 is installed at the first longitudinal end of the superstructure 7, and each sensor 22 is at a second end different from the first longitudinal first end of the superstructure 7. is set up.

Each sensor 21 detects the acceleration of the superstructure 7 generated when the vehicle 6 enters the superstructure 7, and each sensor 22 detects the acceleration of the superstructure 7 generated when the vehicle 6 exits the superstructure 7. Is detected. That is, in the present embodiment, each sensor 21 is an acceleration sensor that detects the entry of the vehicle 6 into the superstructure 7, and each sensor 22 is an acceleration sensor that detects the exit of the vehicle 6 from the superstructure 7. ..

The measuring device 1 determines whether or not the vehicle 6 has moved the superstructure 7 independently based on the acceleration data output from the sensors 21 and 22.

Further, also in the present embodiment, as in the first embodiment, each sensor 23 is installed in the central portion of the superstructure 7 in the longitudinal direction. However, each sensor 23 only needs to be able to detect the acceleration for calculating the displacement of the superstructure 7, and its installation position is not limited to the central portion of the superstructure 7. Each sensor 23 detects the acceleration of the deflection of the floor plate F and the main girder G due to the load of the vehicle 6 traveling on the superstructure 7.

The measuring device 1 calculates the displacement of the deflection of the superstructure 7 due to the traveling of the vehicle 6 based on the acceleration data output from each sensor 23. Further, the measuring device 1 calculates the load of the vehicle 6 traveling on the superstructure 7 from the calculated displacement.

The measuring device 1 and the server 2 can communicate with each other via, for example, a wireless network of a mobile phone and a communication network 4 such as the Internet. The measuring device 1 transmits information such as the time when the vehicle 6 travels on the superstructure 7 and the displacement of the superstructure 7 due to the traveling of the vehicle 6 to the server 2. The server 2 may store the information in a storage device (not shown), and may perform processing such as monitoring an overloaded vehicle or determining an abnormality in the superstructure 7 based on the information.

In this embodiment as well, as in the first embodiment, the superstructure 7 is a road bridge, for example, a steel bridge, a girder bridge, an RC (Reinforced-Concrete) bridge, or the like.

23 and 24 are views showing an example of installation of each sensor 21, 22, and 23 in the superstructure 7. Note that FIG. 23 is a view of the superstructure 7 viewed from above, and FIG. 24 is a cross-sectional view of FIG. 23 cut along the BB line or the CC line. Since the cross-sectional view of FIG. 23 cut along the line AA is the same as that of FIG. 3, the illustration is omitted. Further, since the arrangement of each sensor 23 shown in FIGS. 23 and 24 is the same as that in FIGS. 2 and 3, the description thereof will be omitted.

In the example of FIGS. 23 and 24, at a first end EA1 in the longitudinal direction of the superstructure 7, the sensor 21 is provided in each of the main girder G ₁ ~G _K-1, in the longitudinal direction of the superstructure 7 No. in second ends EA2, and the sensor 22 is provided in each of the main girder _{G 1 ~G K-1.} In the examples of FIGS. 23 and 24, N = K-1, and the main girder G _K is not provided with the sensors 21 and 22, but the main girder G _K is provided with the sensors 21 and 22 and the main girder G _{1 is provided.} Sensors 21 and 22 may not be provided in any one of ~ G _K-1. Alternatively, an N = K, may be the sensor 21, 22 is provided in each of the main girder _G 1 ~G _K.

If the sensors 21 and 22 are provided on the floor plate F of the superstructure 7, the detected acceleration may be too large and the output of each sensor 21 and 22 may be saturated. Therefore, in the examples of FIGS. 23 and 24, each sensor 21, 22 is provided on the main girder _{G 1 ~G K-1} of the superstructure 7.

In the present embodiment, in association with the N sensor 21 are N observation point P ₁ to P _N are set, respectively. Observation point P ₁ to P _N are the N observation points of the superstructure 7 arranged along the fourth direction intersecting the first direction in which the vehicle 6 moves the superstructure 7. In the examples of FIGS. 23 and 24, for each integer j of 1 or more and N or less, the observation point P _j is in the vertical upward direction of the sensor 21 provided on the _{main girder G j} at the first end EA1. It is set at the position of the surface of a certain floor plate F. That is, the sensor 21 provided on the _{main girder G j} is an observation device for observing the _{observation point P j.} Sensor 21 for observing the observation point P _j can may be provided an acceleration occurring in the observation point P _j by the running of the vehicle 6 to the detectable position, it is preferably provided in a position closer to the observation point P _j .. Thus, the observation point _P 1 to P _N are the N-number of the sensor 21 and the one-to-one relationship.

Further, in the present embodiment, in association with the N sensor 22 are N observation point Q ₁ to Q _N are set, respectively. Observation point Q ₁ to Q _N is the N observation points of the superstructure 7 arranged along the fifth direction intersecting the first direction in which the vehicle 6 moves the superstructure 7. In the examples of FIGS. 23 and 24, for each integer j of 1 or more and N or less, the observation point Q _j is located vertically upward of the sensor 22 provided on the _{main girder G j} at the second end EA2. It is set at the position of the surface of a certain floor plate F. That is, the sensor 22 provided on the _{main girder G j} is an observation device for observing the _{observation point Q j.} Sensor 22 for observing the observation point Q _j is may be provided an acceleration occurring in the observation point Q _j by the running of the vehicle 6 to the detectable position, it is preferably provided at a position closer to the observation point Q _j .. Thus, observation point _Q 1 to Q _N is the N pieces of sensor 22 with one-to-one relationship.

In this embodiment, N pieces of the observation point _P 1 to P _N are provided, respectively associated with the lane _L 1 ~L _N. Similarly, N-number of observation points _Q 1 to Q _N are provided, respectively associated with the lane _L 1 ~L _{N. The observation points P j} and the observation points Q _j set in association with the lane L _j are arranged along the first direction in which the vehicle 6 moves in the superstructure 7. In the example of FIGS. 23 and 24, the first direction, X direction along the lane _L 1 ~L _N of the superstructure 7, i.e., in the longitudinal direction of the superstructure 7. The fourth and fifth directions are the Y direction orthogonal to the X direction in the plane of the superstructure 7 on which the vehicle 6 travels, that is, the width direction of the superstructure 7. However, like the case lane L ₁ ~L _N are each curved, the fourth direction and the fifth direction may not match. The fourth direction and the fifth direction may not be perpendicular to the first direction, for example, and the distance from the end side to the observation point P ₁ to P _N where the vehicle 6 of the superstructure 7 enters, distance from the end on the side where the vehicle 6 of the superstructure 7 retreats to the observation point Q ₁ to Q _N may also be different. Incidentally, the observation point _P 1 to P _N is an example of the "observation point of the first N +. 1 to No. M". M is an integer larger than the integer N. Further, observation point _Q 1 to Q _N is an example of the "observation point of the M +. 1 to the L". L is an integer larger than the integer M. The observation point P _k is an example of the "observation point of the N + k", and the observation point Q _k is the "observation point of the M + k". k is an arbitrary integer of 1 or more and MN or less. The observation point P _m is an example of the "observation point of the N + m", and the observation point Q _m is the "observation point of the M + m". k is an arbitrary integer of 1 or more and MN or less. m is an arbitrary integer greater than or equal to 1 and less than or equal to LM and different from k. For example, M = 2N and L = 3N may be set.

The number and installation positions of the sensors 21 and 22 are not limited to the examples shown in FIGS. 23 and 24, and various modifications can be performed.

Based on the acceleration data output from each of the sensors 21 and 22, the measuring device 1 determines the acceleration in the sixth direction that intersects the X direction, which is the first direction, and the Y direction, which is the fourth and fifth directions, respectively. get. Since the observation points P _{1 to PN} and Q _{1 to} Q _N are displaced by the impact in the directions orthogonal to the X and Y directions, the measuring device 1 is in the X direction in order to accurately calculate the magnitude of the impact. And it is desirable to acquire the acceleration in the sixth direction orthogonal to the Y direction, that is, in the normal direction of the floor plate F.

Although not shown because it is the same as in FIG. 4, the sensors 21 and 22 are acceleration sensors that detect accelerations generated in each of the three axes orthogonal to each other.

In order to detect an impact applied to the observation point P ₁ to P _N by entering the superstructure 7 of the vehicle 6, each sensor 21, x-axis is the three detection axes, y-axis, of the z-axis, one axis Is installed so as to intersect the first direction and the fourth direction. Similarly, in order to detect an impact applied to the observation point Q ₁ to Q _N by departure of the superstructure 7 of the vehicle 6, each sensor 22, x-axis is the three detection axes, y-axis, of the z-axis One axis is installed so as to intersect the first direction and the fifth direction. In the examples of FIGS. 23 and 24, since the first direction is the X direction and the fourth and fifth directions are the Y directions, one axis of each of the sensors 21 and 22 intersects the X direction and the Y direction. It is installed so that it faces the direction. Since the observation points P _{1 to PN} and Q _{1 to} Q _N are displaced by the impact in the directions orthogonal to the X and Y directions, ideally, each sensor is used to accurately detect the magnitude of the impact. 21 and 22 are installed so that one axis is orthogonal to the X direction and the Y direction, that is, the normal direction of the floor plate F.

However, when the sensors 21 and 22 are installed in the superstructure 7, the installation location may be tilted. The measuring device 1 has three axes that combine accelerations of the x-axis, y-axis, and z-axis even if one of the three detection axes of each sensor 21 and 22 is not installed in the normal direction of the floor plate F. The combined acceleration can correct the detection error due to the inclination of each of the sensors 21 and 22.

Hereinafter, the details of the measurement method of the present embodiment executed by the measurement device 1 will be described.

2-2. Judgment of single movement of vehicle In the present embodiment, in the measuring device 1, a plurality of parts of the moving vehicle 6 are observation points P based on acceleration data which is observation information by N sensors 21 as observation devices. _{The first observation point information including the time when each of j} has passed and the physical quantity which is the response to the action of the plurality of parts on each observation point P _{j is acquired.} Similarly, in the present embodiment, the measuring device 1 has the time and time _{when the plurality of parts of the vehicle 6 have passed the observation points Qj} , respectively, based on the acceleration data which is the observation information by the N sensors 22 as the observation devices. acquiring second observation point information including the physical quantity is a response to the action of the respective observation points Q _j of the plurality of sites. Here, j is each integer of 1 or more and N or less.

In the present embodiment, it is considered that the load from the plurality of axles or wheels included in the vehicle 6 is applied to the superstructure 7, and the first observation point information and the second observation point information are acquired from each of the plurality of parts to be acquired. Is an axle or a wheel. Hereinafter, in the present embodiment, it is assumed that each of the plurality of parts is an axle.

Further, in the present embodiment, each sensor 21 which is an acceleration sensor detects the acceleration due to the action of _{the plurality of axles on the respective observation points Pj.} Similarly, the sensors 22 in the acceleration sensor detects the acceleration by the action of the respective observation points Q _j of the plurality of axles.

In the present embodiment, as shown in FIG. 23, the observation point _P 1 to P _N is set to a first end EA1, observation point _Q 1 to Q _N is set to a second end EA2. Therefore, the time at which the plurality of axles of the vehicle 6 has passed each observation point P _j, entry time into the superstructure 7 of each axle, and more particularly can be regarded as entry time to lane L _j. Also, the time in which a plurality of axles of the vehicle 6 has passed each observation point Q _j, exit time from the superstructure 7 of each axle, and more particularly can be regarded as exit time from the lane L _j.

Therefore, in the present embodiment, the first observation point information, an acceleration strength of the physical quantity which is a response to the action of when entry time and the axles of the lanes L _j of each axle of the vehicle 6 enters the lane L _j include. The second observation point information includes an acceleration strength as a physical quantity, which is a response to the action when the exit time and the axles of the lanes L _j of each axle of the vehicle 6 retreats from the lane L _j.

Further, since the entry and exit of each axle of the vehicle 6 correspond to each other, the first observation point information and the second observation point information can be stratified, and the first observation point information, the second observation point information and these layers can be stratified. We will call it axle information including other information.

That is, in addition to the first observation point information and the second observation point information, the axle information includes _{the approach time to the lane L j} , the acceleration intensity at the time of approach, the exit time from the _{lane L j, and the exit time for each axle.} It includes correspondence information of acceleration intensity and correspondence information between the vehicle 6 and the corresponding information for each axle. Therefore, from the axle information, for each vehicle 6 that has passed the superstructure 7, the lane L _j that each axle has passed, the time that the observation points P _j and Q _j have passed, and the acceleration intensity at the time of passing are specified.

FIG. 25 shows an example of axle information. In the example of FIG. 25, the information in the first to fourth columns is information about the vehicle 6 having the vehicle number 1. The information in the first column is the information about the first axle with the axle number 1, the information in the second column is the information about the second axle with the axle number 2, and the information in the third column is the information about the axle number. It is the information about the third axle which is 3, and the information in the fourth column is the information about the fourth axle whose axle number is 4. For example, the correspondence information of the first column, the axle head of the axle numbers of vehicles 6 of the vehicle number 1 is 1, entry time to lane L ₂ is TI11, acceleration strength upon entry is located in pai11 , exit time from the lane _{L 2} is TO11, acceleration strength at exit indicates that the Pao11.

Further, the information in the fifth to sixth columns is information about the vehicle 6 having the vehicle number 2. The information in the fifth column is the correspondence information about the first axle having the axle number 1, and the information in the sixth column is the correspondence information about the second axle having the axle number 2. For example, the correspondence information of the fifth column, the axle head of the axle numbers of vehicles 6 of the vehicle number 2 is 1, entry time to lane L ₁ is Ti21, acceleration strength upon entry is located in pai21 , exit time from the lane _{L 1} is TO21, acceleration strength at exit indicates that the Pao21.

The information in the 7th to 8th columns is information about the vehicle 6 having the vehicle number 3. The information in the 7th column is the correspondence information about the first axle having the axle number 1, and the information in the 8th column is the correspondence information about the second axle having the axle number 2. For example, in the corresponding information in the seventh column, the approach time to the lane L1 is ti31 and the acceleration intensity at the time of approach is pai31 for the _first axle in which the axle number of the vehicle 6 having the vehicle number 3 is 1. , exit time from the lane _{L 1} is To31, acceleration strength at exit indicates that the Pao31.

As an example, FIGS. 26 and 27 show an arrangement example of each sensor 21, 22, 23 and observation points P ₁ , P ₂ , Q ₁ , Q ₂ , R ₁ , and R _{2 when N = 2.} In the case of the arrangement example shown in 26 and 27, a procedure for the measuring device 1 to generate axle information will be described.

FIG. 26 is a view of the superstructure 7 viewed from above, and FIG. 27 is a cross-sectional view of FIG. 26 cut along the BB line or the CC line. Since the cross-sectional view of FIG. 26 cut along the line AA is the same as that of FIG. 6, the illustration is omitted. Further, since the arrangement of each sensor 23 shown in FIGS. 26 and 27 is the same as that in FIGS. 5 and 6, the description thereof will be omitted.

In the example of FIGS. 26 and 27, two sensors 21 are respectively provided at the first end EA1 of the superstructure 7 on the main girder _G 1, _{G 3,} the two sensors 22, the superstructure 7 They are respectively provided on the main girder _G 1, _{G 3} at the second end EA2. Further, the observation points P ₁ and Q _{1 corresponding to the lane L 1} are set at the positions of the surface of the floor plate F in the vertically upward direction of the sensors 21 and 22 provided on the main girder G ₁ , respectively, and correspond _{to the lane L 2.} observation point P _2, Q ₂ is set to the position of the surface of the floor F in the vertically upward direction of the sensor 21, 22 provided on the main girder G ₃ respectively of. The sensor 21 provided on the main girder G _{1 observes the observation point P 1,} and the sensor 21 provided on the main girder G ₃ observes the observation point P ₂ . The sensor 22 provided on the main girder G ₁ observes the observation point Q _1, the main girder G sensor 22 provided in the ₃ observes an observation point Q _2. In order to generate axle information, the measuring device 1 converts the acceleration detected by each of the sensors 21 and 22 at each time into an amplitude and acquires the acceleration intensity.

FIG. 28 is a diagram showing an example of acceleration detected with respect to observation points P ₁ , P ₂ , Q ₁ and Q ₂ when a 4-axis vehicle 6 _{travels in lane L 2.} Further, FIG. 29 is a diagram in which the acceleration amplitude at each time in FIG. 28 is converted into an acceleration intensity. In the example of FIGS. 28 and 29, the vehicle 6 is because the traveling lane L _2, are acquired large acceleration intensity at time four axles of the vehicle 6 passes the observation point P _2, Q _2, respectively .. Four axle acceleration intensity acquired at the time of passing through the observation point P ₂ respectively included in the first observation point information. The four axle acceleration intensity acquired at the time of passing through the observation point Q ₂ respectively are included in the second observation point data.

The measuring apparatus 1, the time when the obtained acceleration intensity each axle in order from the head of the axle the time exceeds a predetermined threshold value has passed the observation point P _2, Q _2, i.e., to the lane L ₂ of each axle It is obtained as the exit time from the entry time and lane L _2.

FIG. 30 is a diagram in which the acceleration intensity of FIG. 29 is binarized at a predetermined threshold value. In the example of FIG. 30, each entry time and exit time from the lane L ₂ to lane L ₂ of the four axles are acquired. Each entry time to lane L ₂ of the four axles are included in the first observation point information. Further, each of the exit time from the lane L ₂ of the four axles are included in the second observation point data.

Furthermore, the measuring apparatus 1 has four pattern 1 of each entry time to lane L ₂ of the axle, compared with the pattern 2 of the exit time from each lane L ₂ of the four axles, the two patterns Determines whether or not is due to the passage of the same vehicle 6. Since the distance between the four axles does not change, the patterns 1 and 2 will match if the speed at which the vehicle 6 travels on the superstructure 7 is constant. For example, the measuring device 1 slides one of the times of patterns 1 and 2 so as to match the entry time and the exit time of the first axle, and sets the approach time and the exit time of each of the second to fourth axles. If the difference is less than or equal to a predetermined threshold value, it is determined that patterns 1 and 2 are due to the passage of the same vehicle 6, and if the difference is larger than the predetermined threshold value, patterns 1 and 2 are due to the passage of two vehicles 6. Judge as something. In the measuring device 1, when two vehicles 6 carry one lane at the same speed, the plurality of axles of the preceding vehicle 6 and the plurality of axles of the rear vehicle 6 are all the axles of one vehicle 6. If the interval between the entry time or exit time of two consecutive axles is more than the specified time difference, the entry time and exit time of the two axles may be divided into two vehicles 6. ..

FIG. 31 is a view in which the pattern 2 of the exit time from the _{lane L 2} of each of the four axles is slid so as to match the entry time and the exit time of the leading axle with respect to FIG. Note that FIG. 31 is enlarged in the horizontal axis direction with respect to FIG. 30. In the example of FIG. 31, the pattern 1 of the entry time to _{each lane L 2 of} the four axles and the pattern 2 of the exit time from _{each lane L 2 of the four axles are substantially the same, and the pattern 1} , 2 are determined to be due to the passage of the same vehicle 6.

The measuring apparatus 1, the four entry time to lane L ₂ shown in FIG. 30, the peak value of the four accelerations intensity of the observation point P ₂ as shown in FIG. 29, from the lane L ₂ shown in FIG. 30 four exit time, and the peak value of the four acceleration intensity observation point Q ₂ to which shown in FIG. 29, by associating in sequence from the head, the corresponding information of the leading axle, correspondence information of the second axle, 3 Acquire the correspondence information of the fourth axle and the correspondence information of the fourth axle. Furthermore, the measuring apparatus 1 acquires the correspondence information that associates the vehicle 6 traveling on the lane L ₂ and the correspondence information of the four axles. This information is included in the axle information together with the first observation point information and the second observation point information.

Based on the axle information, the measuring device 1 indicates, for _{any vehicle 6 that has passed through the lane L j} of the superstructure 7, the approach time of each axle of the vehicle 6 to the observation point P _{j, and the observation point P j by each axle.} acceleration strength, exit time from the observation point Q _j of each axle, and can identify the acceleration intensity observation point Q _j by each axle.

The measuring device 1 can determine whether or not the vehicle 6 has moved the superstructure 7 independently based on the axle information acquired in a predetermined period. Specifically, the measuring device 1 acquires the entry time and exit time from each lane of each vehicle 6 from the axle information acquired in the predetermined period, and arbitrarily lane L _{k in the predetermined period.} between entry time and exit time of any vehicle 6 for determining, if no entry time and exit time of the other vehicle 6 for the other lanes L _m, and the vehicle 6 has traveled the superstructure 7 alone .. k is an arbitrary integer of 1 or more and N or less, and m is an arbitrary integer of 1 or more and N or less and different from k. For example, if the axle information shown in FIG. 25 in a predetermined period is acquired, the measuring device 1, lane L ₂ of the vehicle 6 entry time ti11 to lane L ₂ of the leading axle of the vehicle 6 of the vehicle number 1 obtained as entry time into acquires exit time to11 from lane L ₂ of the 4 th axle of the vehicle 6 as exit time from the lane L ₂ of the vehicle 6. The measuring device 1 similarly acquires the entry time and exit time from each lane of each vehicle having a vehicle number of 2 or later. The measuring apparatus 1, for example, in a predetermined period, between the exit time to11 from entry time ti11 lane L ₂ to lane L ₂ of the vehicle 6 of the vehicle number 1, each vehicle car number is 2 or less without exit time from entry time and lane L ₂ ~L _N of 6 to lane L ₂ ~L _N of judges that the vehicle 6 of the vehicle number 1 moves the superstructure 7 alone.

In the present embodiment, the measuring device 1, when a vehicle travels more vehicles 6 in any lane L _k simultaneously, the plurality of vehicles 6 is regarded as one vehicle, the upper vehicle 6 alone structure It is determined that 7 has been moved. However, the measuring apparatus 1, when the plurality of vehicles 6 has traveled simultaneously any lane L _k, it may be determined that the vehicle 6 has not moving superstructure 7 alone.

2-3. Measurement Method FIG. 32 is a flowchart showing an example of the procedure of the measurement method of the second embodiment. In this embodiment, the measuring device 1 executes the procedure shown in FIG. 32.

As shown in FIG. 32, first, the measuring device 1 performs the process of step S21. Since the process of step S21 is the same as the process of step S1 of FIG. 18, the description thereof will be omitted. Step S21 is a coefficient value calculation step.

Time Next, the measuring apparatus 1, based on the observation information by the N sensors 21 for observing the observation point P ₁ to P _N, each axle of the vehicle 6 has passed one of the observation point P ₁ to P _N The first observation point information including the above is acquired (step S22). As described above, the N sensors 21 are each accelerometer observation information by the N sensors 21, an acceleration detection information generated in the observation point P ₁ to P _N. The measuring device 1 acquires the first observation point information based on the acceleration detected by each of the N sensors 21. This step S22 is a first observation point information acquisition step.

Time Next, the measuring apparatus 1, based on the observation information by the N sensors 22 for observing the observation point Q ₁ to Q _N, the axles of the vehicle 6 has passed one of the observation point Q ₁ to Q _N The second observation point information including the above is acquired (step S23). As described above, the N sensors 22 are each accelerometer observation information by the N sensors 22, an acceleration detection information generated in the observation point Q ₁ to Q _N. The measuring device 1 acquires the second observation point information based on the acceleration detected by each of the N sensors 22. This step S23 is a second observation point information acquisition step.

Next, the measuring device 1 performs the processes of steps S24 to S27. Since the processes of steps S24 to S27 are the same as the processes of steps S2 to S5 of FIG. 18, the description thereof will be omitted. Step S24 is a physical quantity acquisition step. Step S25 is an action calculation step. Step S26 is a displacement calculation step. Step S27 is a load calculation step.

Next, the measuring device 1 determines whether or not the vehicle 6 has moved the superstructure 7 independently (step S28). Specifically, the measuring device 1 has an arbitrary integer k of 1 or more and N or less and 1 or more and N based on the first observation point information acquired in step S1 and the second observation point information acquired in step S2. _{While the vehicle 6 moves between the observation point P k} and the observation point Q _k for any integer m that is less than or different from k, the other vehicle 6 has the observation point P _m and the observation point Q _m . Determine if you are moving between. Then, in the measuring device 1, while the vehicle 6 _{moves between the observation point P k} and the observation point Q _k , the other vehicle 6 does not move between the _{observation point P m} and the observation point Q _m. In this case, it is determined that the vehicle 6 has moved the superstructure 7 independently. This step S28 is a single movement determination step.

Then, when it is determined in step S28 that the vehicle 6 has moved the superstructure 7 independently (Y in step S29), the measuring device 1 performs the processes of steps S30 to S33. Since the processes of steps S30 to S33 are the same as the processes of steps S8 to S11 of FIG. 18, the description thereof will be omitted. Step S30 is a coefficient value update step. Step S31 is an abnormality determination step. Step S32 is a notification step.

When it is determined in step S28 that the vehicle 6 has not moved the superstructure 7 by itself (N in step S29), the measuring device 1 does not perform the processes of steps S30 to S33.

Next, the measuring apparatus 1 outputs the load of the vehicle 6 traveling lane _L 1 ~L _N calculated in step S27 to the server 2 (step S34). This step S34 is an output step.

The measuring device 1 repeats the processes of steps S22 to S34 until the measurement is completed (N in step S35).

FIG. 33 is a flowchart showing an example of the procedure of the independent movement determination step which is step S28 of FIG. 32.

As shown in FIG. 33, first, the measuring device 1 sets the integer j to 1 (step S281), and uses the first observation point information and the second observation point information to enter _{the lane L j of each axle.} comparing the time pattern 1 of the pattern 2 of the exit time from the lane L _j of each axle (step S282).

Then, when the difference between the entry time of each axle included in the pattern 1 and the exit time of each axle included in the pattern 2 is equal to or less than the threshold value (Y in step S283), the measuring device 1 includes each of the axles included in the pattern 1. Axle information is generated by associating the approach time and acceleration intensity of the axle with the exit time and acceleration intensity of each axle included in the pattern 2 with one vehicle 6 (step S284).

Further, when the difference between the entry time of each axle included in pattern 1 and the exit time of each axle included in pattern 2 is larger than the threshold value (N in step S283), the measuring device 1 performs the process of step S284. Not performed.

When the integer j is not N (N in step S285), the measuring device 1 adds 1 to the integer j (step S286), and repeats the processes of steps S282 to S284.

Then, when the integer j becomes N (Y in step S285), the measuring device 1 acquires the approach time and the exit time for each lane of each vehicle 6 from the axle information generated in step S284 (step S287).

Next, the measuring apparatus 1 sets the integer k to 1 (step S288), between the entry time and exit time of the vehicle 6 for lane L _k, entry time and exit time of the other vehicle 6 to the other lanes If there is no such (Y in step S289), it is determined that the vehicle 6 has moved the superstructure 7 independently (step S293), and the process of the independent movement determination step is terminated.

When the measuring device 1 has an entry time and an exit time of another vehicle 6 with respect to another lane between the entry time and the exit time of the vehicle 6 with respect to _{the lane L k (N in step S289), the integer k is N.} If not (N in step S290), 1 is added to the integer k (step S291), and the process of step S289 is repeated.

Then, when the integer k becomes N (Y in step S290), the measuring device 1 determines that the vehicle 6 has not moved the superstructure 7 by itself (step S292), and ends the process of the independent movement determination step.

2-4. Configuration of Measuring Device FIG. 34 is a diagram showing a configuration example of the measuring device 1 according to the second embodiment. In FIG. 34, the same components as those in FIG. 21 are designated by the same reference numerals. As shown in FIG. 34, as in the first embodiment, the measuring device 1 includes a control unit 110, a first communication unit 120, a storage unit 130, a second communication unit 140, and an operation unit 150. doing.

Since the processes performed by the first communication unit 120, the storage unit 130, the second communication unit 140, and the operation unit 150 are the same as those in the first embodiment, the description thereof will be omitted.

The control unit 110 calculates the displacement of the superstructure 7 and the like, _{updates the value of the coefficient of the function yij} , determines the abnormality of the superstructure 7, and the like, as in the first embodiment.

The control unit 110 is associated with the physical quantity acquisition unit 111, the action calculation unit 112, the displacement calculation unit 113, the load calculation unit 114, the independent movement determination unit 115, the coefficient value update unit 116, and the abnormality determination unit 117. It includes a numerical value calculation unit 118, an output processing unit 119, a first observation point information acquisition unit 161 and a second observation point information acquisition unit 162.

The first execution is performed by the physical quantity acquisition unit 111, the action calculation unit 112, the displacement calculation unit 113, the load calculation unit 114, the coefficient value update unit 116, the abnormality determination unit 117, the coefficient value calculation unit 118, and the output processing unit 119, respectively. Since it is the same as the form, the description thereof will be omitted.

The first observation point information obtaining unit 161, based on the observation information by the N sensors 21 for observing the observation point _P 1 to P _N, passed through one of the axles observation point _P 1 to P _N of the vehicle 6 The process of acquiring the first observation point information including the time when the observation point was made is performed. That is, the first observation point information acquisition unit 161 processes the first observation point information acquisition step in FIG. 32. The first observation point information acquired by the first observation point information acquisition unit 161 is stored in the storage unit 130.

The second measurement point information obtaining unit 162, based on the observation information by the N sensors 22 for observing the observation point _Q 1 to Q _N, passed through one of the axles observation point _Q 1 to Q _N of the vehicle 6 The process of acquiring the second observation point information including the time of the observation is performed. That is, the second observation point information acquisition unit 162 performs the processing of the second observation point information acquisition step in FIG. 32. The second observation point information acquired by the second observation point information acquisition unit 162 is stored in the storage unit 130.

The independent movement determination unit 115 determines whether or not the vehicle 6 has moved the superstructure 7 independently. Specifically, the independent movement determination unit 115 is based on the first observation point information acquired by the first observation point information acquisition unit 161 and the second observation point information acquired by the second observation point information acquisition unit 162. For any integer k greater than or equal to N and less than or equal to N, and any integer m greater than or equal to 1 and less than or equal to k and different from k, while the vehicle 6 moves between the _{observation point P k} and the observation point Q _k. It is determined whether or not the vehicle 6 of the above is _{moving between the observation point P m} and the observation point Q _m. Then, in the independent movement determination unit 115, while the vehicle 6 _{moves between the observation point P k} and the observation point Q _k , the other vehicle 6 moves between the observation point P _m and the observation point Q _m. If not, it is determined that the vehicle 6 has moved the superstructure 7 by itself. That is, the independent movement determination unit 115 performs the processing of the independent movement determination step in FIG. 32. The information of the determination result by the independent movement determination unit 115 is stored in the storage unit 130.

For example, the control unit 110 calculates the displacement of the superstructure 7 by the unknown vehicle 6 based on the operation data from the operation unit 150 _{, updates the value of the coefficient of the function yij} , and determines the abnormality of the superstructure 7. The first mode to be performed and the second mode for calculating the _{first-order coefficients a 11 to} a _NN and the zero-order coefficients b _{11 to} b _{NN are switched.} For example, after N sensors 23 are installed in the superstructure 7, a load test is performed by a plurality of vehicles with the control unit 110 set to the second mode, and after the load test is completed, the control unit 110 is subjected to a load test. It is set to the first mode.

Similar to the first embodiment, the control unit 110 is a processor that executes various programs stored in the storage unit 130, and by executing the measurement program 131 stored in the storage unit 130, the physical quantity acquisition unit 111, Action calculation unit 112, displacement calculation unit 113, load calculation unit 114, independent movement determination unit 115, coefficient value update unit 116, abnormality determination unit 117, coefficient value calculation unit 118, output processing unit 119, first observation point information acquisition unit. Each function of 161 and the second observation point information acquisition unit 162 is realized. In other words, the measurement program 131 is a program that causes the measuring device 1 which is a computer to execute each procedure of the flowchart shown in FIG. 32. However, the control unit 110 may be configured as a custom IC such as an ASIC to realize the functions of each unit, or the CPU and the ASIC may realize the functions of each unit.

The control unit 110 does not have to include the load calculation unit 114. Further, the control unit 110 does not have to include the abnormality determination unit 117. For example, the measuring device 1 may transmit the updated time series of the coefficient values to the server 2, and the server 2 may determine the abnormality of the superstructure 7 based on the time series of the coefficient values. Further, the control unit 110 does not have to include the coefficient value calculation unit 118. For example, the server 2 or another device _{performs a process of calculating the values of the first-order coefficients a 11 to} a _{NN and} the values of the zero-order coefficients b _{11 to} b _NN , and stores these values in the storage unit 130 of the measuring device 1. You may memorize it.

2-5. Action effect According to the measurement method of the second embodiment described above, as in the measurement method of the first embodiment, the measuring device 1 considers the change over time in the state of the superstructure 7, and the vehicle 6 is on the upper side. The action x _j when passing through the observation point R _j of the structure 7 can be calculated separately from other actions. Further, as in the measurement method of the first embodiment, the measuring device 1 monitors the change over time in the state of the superstructure 7 based on the time series of the coefficient values of the _{updated function y ij, and the superstructure 7 is used.} It is possible to judge the abnormality of. Further, similarly to the measurement method of the first embodiment, the measuring device 1, the displacement and load of the observation points R _j by the running of the vehicle 6 can be accurately calculated.

3. 3. Third Embodiment In the measurement method of the third embodiment, the processing of the independent movement determination step by the measuring device 1 is different from the measurement methods of the first embodiment and the second embodiment. Hereinafter, with respect to the second embodiment, the same components as those of the first embodiment or the second embodiment are designated by the same reference numerals, and the description overlapping with the first embodiment or the second embodiment is omitted or simplified. The contents different from the first embodiment and the second embodiment will be described.

Since the flowchart showing an example of the procedure of the measurement method of the third embodiment is the same as that of FIG. 32, the illustration and description thereof will be omitted. However, in the measurement method of the third embodiment, in the independent movement determination step of step S28 of FIG. 32, the measuring device 1 is performed while the vehicle 6 moves between the _{observation point P k} and the observation point Q _k. other vehicle 6 is not moved between the observation point Q _m and the observation point P _m, and obtains the displacement u _'i and step S24 which is calculated from the action x _i of the observation point R _i in step S26 when the displacement u _i of the observation point R _i approximates determines that the vehicle 6 has moved the superstructure 7 alone. k is an arbitrary integer of 1 or more and N or less, and m is an arbitrary integer of 1 or more and N or less and different from k. Further, i is an arbitrary integer of 1 or more and N or less.

35 and 36 are flowcharts showing an example of the procedure of the independent movement determination step which is step S28 of FIG. 32.

As shown in FIG. 35, first, the measuring device 1 sets the integer j to 1 (step S301), and uses the first observation point information and the second observation point information to enter _{the lane L j of each axle.} comparing the time pattern 1 of the pattern 2 of the exit time from the lane L _j of each axle (step S302).

Then, when the difference between the entry time of each axle included in the pattern 1 and the exit time of each axle included in the pattern 2 is equal to or less than the threshold value (Y in step S303), the measuring device 1 includes each of the axles included in the pattern 1. Axle information is generated by associating the approach time and acceleration intensity of the axle with the exit time and acceleration intensity of each axle included in the pattern 2 with one vehicle 6 (step S304).

Further, when the difference between the entry time of each axle included in pattern 1 and the exit time of each axle included in pattern 2 is larger than the threshold value (N in step S303), the measuring device 1 performs the process of step S304. Not performed.

When the integer j is not N (N in step S305), the measuring device 1 adds 1 to the integer j (step S306), and repeats the processes of steps S302 to S304.

Then, when the integer j becomes N (Y in step S305), the measuring device 1 acquires the approach time and the exit time for each lane of each vehicle 6 from the axle information generated in step S304 (step S307).

Next, the measuring device 1 sets the integer k to 1 (step S308), _{and between the entry time and exit time of the vehicle 6 with respect to the lane L k} , the entry time and exit time of the other vehicle 6 with respect to the other lane. If there is (N in step S309), if the integer k is not N (N in step S310), 1 is added to the integer k (step S311), and the process of step S309 is repeated.

Then, when the integer k becomes N (Y in step S310), the measuring device 1 determines that the vehicle 6 has not moved the superstructure 7 by itself (step S312), and ends the process of the independent movement determination step.

Further, when the measuring device 1 does not have the entry time and the exit time of the other vehicle 6 with respect to the other lane between the entry time and the exit time of the vehicle 6 with respect to _{the lane L k (Y in step S309), FIG. 36 shows.} As shown, the integer k is set to 1 and the integer NL is set to 0 (step S313).

Next, the measuring apparatus 1 compares the displacement _{u k} of the displacement u _'k and the observation point _{R k} calculated from the action _{x k} of the observation point _{R k} (step S314).

When the displacement u _'k and the displacement _{u k} approximates (Y in step S315), the measuring apparatus 1 adds 1 to the integer NL (Step S316).

When the integer k is not N (N in step S317), the measuring device 1 adds 1 to the integer k (step S318), and repeats the processes of steps S314 to S316.

Then, when the integer k becomes N (Y in step S317), the measuring device 1 determines that the vehicle 6 has moved the superstructure 7 independently when the integer NL is 1 (Y in step S319) (step). S320), if the integer NL is not 1 (N in step S319), it is determined that the vehicle 6 has not moved the superstructure 7 by itself (step S321), and the process of the single movement determination step is terminated.

The processing of steps S301 to S312 of FIG. 35 is the same as the processing of steps S281 to S292 of FIG. 33, and the processing of steps S313 to S321 of FIG. 36 is the same as the processing of steps S161 to S169 of FIG. be.

Since the measuring device 1 in the third embodiment is the same as that in FIG. 34, its illustration and description will be omitted. However, in the measuring device 1 of the third embodiment, in the independent movement determination unit 115, while the vehicle 6 _{moves between the observation point P k} and the observation point Q _k , the other vehicle 6 _{sets the observation point P m} . not been moved between the observation point _{Q m,} and the displacement _{u i} of the displacement u _'i and observation point _{R i} obtained in step S24 is calculated from the action _{x i} observation point _{R i} in step S26 When is close to each other, it is determined that the vehicle 6 has moved the superstructure 7 by itself. k is an arbitrary integer of 1 or more and N or less, and m is an arbitrary integer of 1 or more and N or less and different from k. Further, i is an arbitrary integer of 1 or more and N or less.

According to the measurement method of the third embodiment described above, the measuring device 1 considers the change with time of the state of the superstructure 7 and is a vehicle, as in the measurement method of the first embodiment or the second embodiment. The action x _j when 6 passes through the observation point R _j of the superstructure 7 can be calculated separately from other actions. Further, as in the measurement method of the first embodiment or the second embodiment, the measuring device 1 monitors the change over time in the state of the superstructure 7 based on the time series of the coefficient values of the _{updated function y ij.} Then, the abnormality of the superstructure 7 can be determined. Further, similarly to the measurement method of the first or second embodiment, the measuring device 1, the displacement and load of the observation points R _j by the running of the vehicle 6 can be accurately calculated.

Further, in the measurement method of the third embodiment, the condition for determining that the vehicle 6 has moved the superstructure 7 independently is the logical product of the condition in the first embodiment and the condition in the second embodiment. Therefore, according to the measurement method of the third embodiment, the _{frequency of updating the coefficient value of y ij} is lower than that of the first embodiment and the second embodiment, but the coefficient value of _{y ij is due to a short-term environmental factor.} Is less likely to be updated to an incorrect value.

4. Fourth Embodiment In the first embodiment, the measuring method of the second embodiment or the third embodiment, the physical quantity obtaining step, the measuring device 1, observation point R ₁ to R _N as a physical quantity of the observation points R ₁ to R _N The displacement u _{1 to} u _{N of} is acquired. In contrast, in the measurement method of the fourth embodiment, the physical quantity obtaining step, the measuring device 1, observation point _R 1 to R _N physical quantity as observation points _R 1 to R Load _w 1 to w by the vehicle 6 _{N Get N.} Hereinafter, with respect to the fourth embodiment, the same components as those of the first embodiment, the second embodiment, or the third embodiment are designated by the same reference numerals with the first embodiment, the second embodiment, or the third embodiment. The duplicated description will be omitted or simplified, and the contents different from those of the first embodiment, the second embodiment and the third embodiment will be mainly described.

As shown in equation (20), the load _{f i} by the vehicle 6 observation point _{R i} is assumed to be equal to the sum of the values of the above function _y i1 _{~y iN.}

Table as in this case, from the above equations (1) and (20), load vector f to a load _f 1 ~f _N elements by the vehicle 6 observation point _R 1 to R _N of the formula (21) Will be done.

In the equation (21), each element y _k of the vector Y is defined as in the equation (22). k is any integer greater than or equal to 1 and less than or equal to N.

Indeed load vector w to the load _w 1 to w _N element by each of the vehicle 6 in the observed observation point _R 1 to R _N is, assuming equal load vector f, equation (23) is obtained.

Equation (23) is modified to obtain equation (24).

If the 1st-order coefficient matrix A and the 0th-order coefficient matrix B are known, by substituting the load vector w obtained by the observation into the equation (24), an action vector having _{an unknown action x 1 to x N as an element.} X is calculated.

As an example, as in the arrangement example shown in FIGS. 5 and 6 or the arrangement example shown in FIGS. 26 and 27, the case of N = 2 is taken as an example, and the action x ₁ from the equation (24), The _{process of deriving x 2} will be described in detail. Since N = 2, the equation (25) can be obtained from the equation (24).

Equation (25) is modified to obtain equation (26).

From the equation (26), the actions x ₁ and x ₂ are calculated as the equations (27) and (28), respectively.

Vehicle 6 travels lane L _k alone if no parallel running vehicle condition is satisfied, the load w _k observed the load w _'k calculated from the action x _k of the observation point R _k is approximated Therefore, the equation (29) holds. Since both the action x _k and the load w _k are sequences with the time t as a parameter, the load _w'k and the load w _k are similar at each time t as shown in equation (29).

Therefore, the measuring device 1 can determine that the vehicle 6 has traveled alone in the _{lane L k} during the period when the equation (29) holds for _{any observation point R k.}

Specifically, the measuring apparatus 1, by the equation (30), to calculate the 'average w of _{k (t)' k_avg (t} ) load w of each observation point _{R k} in a given period.

Further, the measuring device 1 calculates the average value w _{k_avg} (t) of the load w _{k (t) of each observation point R k} in a predetermined period by the equation (31).

Furthermore, the measuring apparatus 1 uses the average value _{w K_avg} the 'average w of (t)' _{K_avg} load w (t) and the load _w k (t) (t), the equation (32), the sample correlation Calculate the number r _k. As the average value _w 'k_avg (t) and the average value _{w K_avg} (t) is approximated, the absolute value of the sample correlation coefficient _{r k} is a value close to 1. In addition, as the average value _w 'k_avg and (t) and the average value _{w k_avg} (t) does not approximate, a value close to 0 is the absolute value of the sample correlation coefficient _{r k.}

The measuring apparatus 1, each time the newly calculated action _x 1 ~x _n observation point _R 1 to R _n, threshold r absolute value of the predetermined sample correlation coefficient _{r k} obtained in formula (32) _It is determined that the equation (29) holds when it is larger than th.

As described above, the measuring device 1 determines that the vehicle 6 has moved the superstructure 7 independently when the equation (29) is satisfied, and when the equation (29) is not satisfied, the vehicle 6 is the superstructure 7. Can be determined not to move alone.

FIG. 37 is a flowchart showing an example of the procedure of the measurement method of the fourth embodiment. In this embodiment, the measuring device 1 executes the procedure shown in FIG. 37.

As shown in FIG. 37, first, the measurement apparatus 1, the vehicle acquires a load _w 1 to w _N by the vehicle observation point _R 1 to R _N when the traveling superstructure 7 alone, the load _w 1 ~ Based on w _N , the values of the coefficients a _ij and b _{ij of the function y ij} are calculated (step S41). i is an arbitrary integer of 1 or more and N or less, and j is an arbitrary integer of 1 or more and N or less. The vehicle is a known mobile body different from the vehicle 6 which is an unknown mobile body. ^{Specifically, the measuring device 1 calculates the inverse matrix A -1} and the 0th-order coefficient matrix B of the first-order coefficient matrix A included in the equation (24). This step S41 is a coefficient value calculation step.

Time Next, the measuring apparatus 1, based on the observation information by the N sensors 21 for observing the observation point P ₁ to P _N, each axle of the vehicle 6 has passed one of the observation point P ₁ to P _N The first observation point information including the above is acquired (step S42). This step S42 is a first observation point information acquisition step.

Time Next, the measuring apparatus 1, based on the observation information by the N sensors 22 for observing the observation point Q ₁ to Q _N, the axles of the vehicle 6 has passed one of the observation point Q ₁ to Q _N The second observation point information including the above is acquired (step S43). This step S43 is a second observation point information acquisition step.

Next, the measuring device 1 is based on the observation information by the N sensors 23 for observing the observation point R ₁ to R _N, the physical quantity of the observation points R ₁ to R _N when the vehicle 6 moves the superstructure 7 As a result, the loads w _{1 to w N} by the vehicle 6 are acquired (step S44). As described above, the N sensors 23 are each accelerometer observation information by the N sensors 23, an acceleration detection information generated in the observation point R ₁ to R _N. Then, this acceleration is an acceleration in a third direction that intersects the X direction, which is the first direction, and the Y direction, which is the second direction, respectively. The measuring device 1 calculates the load vector w included in the equation (24) based on the acceleration in the third direction detected by each of the N sensors 23. Therefore, the load w ₁ to w _N as the physical quantity of the observation points R ₁ to R _N physical quantity obtaining step by the measuring apparatus 1 acquires, the third direction of the load cross the X direction and the Y direction, for example, X direction And the load in the third direction orthogonal to the Y direction. This step S44 is a physical quantity acquisition step.

Next, the measuring device 1, as the load _{w i} by the vehicle 6 observation point _{R i} is equal to the sum of the values of the function _y i1 _{~y iN,} based on the weight _w 1 to w _N obtained in step S44, calculating the effects _x 1 ~x _N observation point _R 1 to R _N (step S45). i is an arbitrary integer of 1 or more and N or less. ^{Specifically, the measuring device 1 substitutes the inverse matrix A -1} and the zero-order coefficient matrix B of the first-order coefficient matrix A calculated in step S41 and the load vector w calculated in step S44 into the equation (24). The action vector X is calculated. This step S45 is an action calculation step.

Next, the measuring apparatus 1, based on the action _x 1 ~x _N calculated in step S45, calculates the weight w _'1 to w' _N by the vehicle 6 observation point _R 1 to R _N (step S46). For example, for each integer j of 1 or more and N or less, _{a load f j} calculated by assuming that all actions other than the action x _{j of the actions x 1 to x N are zero is applied on the right side of the equation (21).} Let _w'j . This step S46 is a load calculation step.

Next, the measuring apparatus 1, based on the weight w _'1 to w' _N calculated in step S46, calculates the respective displacement lane _L 1 ~L _N by the running of the vehicle 6 (Step S47). For one or more N or less for each integer j, since there is a correlation between the displacement of the load w _'j lane L _j, the load test by advance vehicle, keep calculating the coefficients of the correlation equation. Measuring apparatus 1 can calculate the displacement of the lanes L _j by substituting the load w _'j to the correlation expression. This step S47 is a displacement calculation step.

Next, the measuring device 1 determines whether or not the vehicle 6 has moved the superstructure 7 independently (step S48). Specifically, the measuring device 1 has an arbitrary integer k of 1 or more and N or less and 1 or more and N based on the first observation point information acquired in step S1 and the second observation point information acquired in step S4. _{While the vehicle 6 moves between the observation point P k} and the observation point Q _k for any integer m that is less than or different from k, the other vehicle 6 has the observation point P _m and the observation point Q _m . Determine if you are moving between. Then, in the measuring device 1, while the vehicle 6 _{moves between the observation point P k} and the observation point Q _k , the other vehicle 6 does not move between the _{observation point P m} and the observation point Q _m. In this case, it is determined that the vehicle 6 has moved the superstructure 7 independently. Alternatively, the measuring device 1 may have the other vehicle 6 move between the observation point P _m and the observation point Q _m while _{the vehicle 6 moves between the observation point P k} and the observation point Q _k. not, and, when the load _{w i} by the vehicle 6 load w _'i and observation point _{R i} obtained in step S44 is calculated from the action _{x i} of the observation point _{R i} in step S46 approximates the vehicle 6 It may be determined that the superstructure 7 has been moved alone. Further, the measuring apparatus 1, when the load _{w i} by the vehicle 6 load w _'i and observation point _{R i} obtained in step S44 is calculated from the action _{x i} of the observation point _{R i} in Step S46 approximates, It may be determined that the vehicle 6 has moved the superstructure 7 independently. In this case, steps S42 and S43 may not be necessary. This step S48 is a single movement determination step.

The measuring apparatus 1, when it is determined that the vehicle 6 has moved the superstructure 7 alone (Y in step S49), the load _w 1 by the vehicle 6 observation point _R 1 to R _N to w _N and at step S48 Based on the actions x _{1 to x N} , the value of the coefficient of the _{function y ij represented by} the equation (1) is updated (step S50). Specifically, when the measuring device 1 determines that the vehicle 6 has _{traveled independently in the lane L k} , as described above, _{the values of the primary coefficients a 1k} , a _2k , ..., a _Nk and the 0th coefficient b Calculate and update the values of _1k , b _2k , ..., B _Nk. This step S50 is a coefficient value update step.

Next, the measuring device 1 determines the abnormality of the superstructure 7 based on the time series of the coefficient values updated in step S50 (step S51). As described above, the measuring device 1 determines that the superstructure 7 is abnormal when the amount of change in the coefficient value from the initial operation of the measuring system 10 exceeds a predetermined threshold value. This step S51 is an abnormality determination step.

Then, when the measuring device 1 determines in step S51 that the superstructure 7 is abnormal (Y in step S52), the measuring device 1 notifies the information prompting the inspection of the superstructure 7 (step S53). For example, the measuring device 1 notifies the server 2 or the like by transmitting information prompting the inspection of the superstructure 7. Alternatively, the measuring device 1 may notify by outputting information prompting the inspection of the superstructure 7 as information such as characters, images, and sounds. This step S53 is a notification step.

When it is determined in step S48 that the vehicle 6 has not moved the superstructure 7 by itself (N in step S49), the measuring device 1 does not perform the processes of steps S50 to S53.

Next, the measuring apparatus 1 outputs the displacement of the lane _L 1 ~L _N calculated in step S47 to the server 2 (step S54). This step S54 is an output step.

The measuring device 1 repeats the processes of steps S42 to S54 until the measurement is completed (N in step S55).

Since the configuration of the measuring device 1 in the fourth embodiment is the same as that in FIG. 34, the illustration thereof will be omitted. Similar to the second embodiment, the measuring device 1 has a control unit 110, a first communication unit 120, a storage unit 130, a second communication unit 140, and an operation unit 150.

Since the processes performed by the first communication unit 120, the storage unit 130, the second communication unit 140, and the operation unit 150 are the same as those in the first embodiment, the description thereof will be omitted.

The control unit 110 calculates the load and the like by the vehicle 6 based on the acceleration data output from each sensor 23 installed in the superstructure 7, _{updates the coefficient value of the function y ij} , and updates the superstructure 7. Judge abnormalities. Similar to the second embodiment, the control unit 110 includes a physical quantity acquisition unit 111, an action calculation unit 112, a displacement calculation unit 113, a load calculation unit 114, an independent movement determination unit 115, and a coefficient value update unit 116. It includes an abnormality determination unit 117, a coefficient value calculation unit 118, an output processing unit 119, a first observation point information acquisition unit 161 and a second observation point information acquisition unit 162.

The first observation point information obtaining unit 161, based on the observation information by the N sensors 21 for observing the observation point _P 1 to P _N, passed through one of the axles observation point _P 1 to P _N of the vehicle 6 The process of acquiring the first observation point information including the time when the observation point was made is performed. That is, the first observation point information acquisition unit 161 processes the first observation point information acquisition step in FIG. 37. The first observation point information acquired by the first observation point information acquisition unit 161 is stored in the storage unit 130.

The second observation point information obtaining unit 162, based on the observation information by the N sensors 22 for observing the observation point _Q 1 to Q _N, passed through one of the axles observation point _Q 1 to Q _N of the vehicle 6 The process of acquiring the second observation point information including the time of the observation is performed. That is, the second observation point information acquisition unit 162 performs the processing of the second observation point information acquisition step in FIG. 37. The second observation point information acquired by the second observation point information acquisition unit 162 is stored in the storage unit 130.

Physical quantity acquisition unit 111, based on the observation information by the N sensors 23 for observing the observation point R ₁ to R _N, the vehicle as the physical quantity of the observation points R ₁ to R _N when the vehicle 6 is moved superstructure 7 The load w _{1 to w N according} to 6 is acquired. That is, the physical quantity acquisition unit 111 performs the processing of the physical quantity acquisition step in FIG. 37. _{The loads w 1 to w N} acquired by the physical quantity acquisition unit 111 are stored in the storage unit 130.

The action calculation unit 112 assumes that the _{load w i} by the vehicle 6 at _{the observation point R i} is equal to the sum of the values of the _{functions y i1 to y iN} for any integer i of 1 or more and N or less, and the physical quantity acquisition unit 111. There based on the load _w 1 to w _N obtained, to calculate the effect _x 1 ~x _N observation point _R 1 to R _N. That is, the action calculation unit 112 performs the process of the action calculation step in FIG. 37. _{The actions x 1 to x N} calculated by the action calculation unit 112 are stored in the storage unit 130.

Displacement calculating unit 113, based on the weight w _'1 ~w' _N the load calculation unit 114 has calculated, to calculate the respective displacement lane _L 1 ~L _N by the running of the vehicle 6. That is, the displacement calculation unit 113 performs the processing of the displacement calculation step in FIG. 37. Each displacement lane _L 1 ~L _N by the running of the vehicle 6 the displacement calculating unit 113 is calculated is stored in the storage unit 130.

Load calculation unit 114, based on the action _x 1 ~x _N which acts calculation unit 112 has calculated, to calculate a load w _'1 ~w' _N by the vehicle 6 observation point _R 1 to R _N. That is, the load calculation unit 114 performs the processing of the load calculation step in FIG. 37. Load w _'1 ~w' _N the load calculation unit 114 has calculated is stored in the storage unit 130.

The independent movement determination unit 115 determines whether or not the vehicle 6 has moved the superstructure 7 independently. Specifically, the independent movement determination unit 115 is based on the first observation point information acquired by the first observation point information acquisition unit 161 and the second observation point information acquired by the second observation point information acquisition unit 162. For any integer k greater than or equal to N and less than or equal to N, and any integer m greater than or equal to 1 and less than or equal to k and different from k, while the vehicle 6 moves between the _{observation point P k} and the observation point Q _k. It is determined whether or not the vehicle 6 of the above is _{moving between the observation point P m} and the observation point Q _m. Then, in the independent movement determination unit 115, while the vehicle 6 _{moves between the observation point P k} and the observation point Q _k , the other vehicle 6 moves between the observation point P _m and the observation point Q _m. If not, it is determined that the vehicle 6 has moved the superstructure 7 independently. Alternatively, the independent movement determination unit 115 moves the other vehicle 6 between the observation point P _m and the observation point Q _m while _{the vehicle 6 moves between the observation point P k} and the observation point Q _k. and yet not, and, if the load w _i by the vehicle 6 observation point R _i to the load w _'i and the physical quantity acquisition unit 111 that the load calculation unit 114 has calculated from the action x _i of the observation point R _i is obtained approximates In addition, it may be determined that the vehicle 6 has moved the superstructure 7 independently. Further, alone movement judgment unit 115, and a load _{w i} by the vehicle 6 observation point _{R i} to the load w _'i and the physical quantity acquisition unit 111 that the load calculation unit 114 has calculated from the action _{x i} of the observation point _{R i} is obtained In the case of approximation, it may be determined that the vehicle 6 has moved the superstructure 7 independently. In this case, the first observation point information acquisition unit 161 and the second observation point information acquisition unit 162 may not be provided. That is, the independent movement determination unit 115 performs the processing of the independent movement determination step in FIG. 37. The information of the determination result by the independent movement determination unit 115 is stored in the storage unit 130.

Coefficient value update section 116 alone move judgment unit 115, when it is determined that the vehicle 6 has moved the superstructure 7 alone, the load due to vehicle 6 observation point R ₁ to R _N physical quantity acquisition unit 111 acquires w The value of the coefficient of the _{function y ij represented by} the equation (1) _{is updated based on the actions x 1 to x N} calculated by the action calculation unit 112 and _{1 to} w _N. Specifically, the coefficient value update section 116, if the vehicle 6 is determined to have traveled a lane _{L k} alone, as described above, linear coefficient _{a 1k,} a 2k, _..., the value of _{a Nk} and 0-order Calculate and update the values of the coefficients b _1k , b _2k , ..., B _Nk. That is, the coefficient value updating unit 116 performs the processing of the coefficient value updating step in FIG. 37. The coefficient value stored in the storage unit 130 is updated by the value calculated by the coefficient value updating unit 116.

The abnormality determination unit 117 determines the abnormality of the superstructure 7 based on the time series of the coefficient values updated by the coefficient value update unit 116. For example, as described above, the abnormality determination unit 117 determines that the superstructure 7 is abnormal when the amount of change in the coefficient value from the initial operation of the measurement system 10 exceeds a predetermined threshold value. That is, the abnormality determination unit 117 performs the processing of the abnormality determination step in FIG. 37. The information of the determination result by the abnormality determination unit 117 is stored in the storage unit 130.

Coefficient value calculation unit 118, one or more N or less arbitrary integer i, with respect to j, vehicle alone load _w 1 by the vehicle observation point _R 1 to R _N when the traveling superstructure 7 to w _N Is obtained, and the values of the coefficients a _ij and b _ij of the function y _{ij are calculated based on the loads w 1 to w N.} That is, the coefficient value calculation unit 118 performs the processing of the coefficient value calculation step in FIG. 37. The values of the first-order coefficients a _{11 to} a _{NN and} the values of the zero-order coefficients b _{11 to} b _NN calculated by the coefficient value calculation unit 118 are stored in the storage unit 130.

Output processing unit 119, the displacement of the lane _L 1 ~L _N displacement calculating unit 113 calculates, performs a process of outputting to the server 2 via the second communication unit 140. That is, the output processing unit 119 processes the output step shown in FIG. 37.

For example, the control unit 110 calculates the load or the like by the unknown vehicle 6 based on the operation data from the operation unit 150 _{, updates the value of the coefficient of the function yij} , and determines the abnormality of the superstructure 7 in the first mode. And the second mode for calculating the first-order coefficients a _{11 to} a _NN and the zero-order coefficients b _{11 to} b _NN. For example, after N sensors 23 are installed in the superstructure 7, a load test is performed by a plurality of vehicles with the control unit 110 set to the second mode, and after the load test is completed, the control unit 110 is subjected to a load test. It is set to the first mode.

Similar to the second embodiment, the control unit 110 is a processor that executes various programs stored in the storage unit 130, and by executing the measurement program 131 stored in the storage unit 130, the physical quantity acquisition unit 111, Action calculation unit 112, displacement calculation unit 113, load calculation unit 114, independent movement determination unit 115, coefficient value update unit 116, abnormality determination unit 117, coefficient value calculation unit 118, output processing unit 119, first observation point information acquisition unit. Each function of 161 and the second observation point information acquisition unit 162 is realized. In other words, the measurement program 131 is a program that causes the measuring device 1 which is a computer to execute each procedure of the flowchart shown in FIG. 32. However, the control unit 110 may be configured as a custom IC such as an ASIC to realize the functions of each unit, or the CPU and the ASIC may realize the functions of each unit.

The control unit 110 does not have to include the displacement calculation unit 113. Further, the control unit 110 does not have to include the abnormality determination unit 117. For example, the measuring device 1 may transmit the updated time series of the coefficient values to the server 2, and the server 2 may determine the abnormality of the superstructure 7 based on the time series of the coefficient values. Further, the control unit 110 does not have to include the coefficient value calculation unit 118. For example, the server 2 or another device _{performs a process of calculating the values of the first-order coefficients a 11 to} a _{NN and} the values of the zero-order coefficients b _{11 to} b _NN , and stores these values in the storage unit 130 of the measuring device 1. You may memorize it.

In the measurement method of the fourth embodiment described above, the measuring apparatus 1, based on the observation information by the N sensors 23 for observing the observation point R ₁ to R _N, a physical quantity of the observation points R ₁ to R _N Acquire the _{loads w 1 to w N} by the vehicle 6. When the the action _{x j} observation point _{R j,} the function indicating the correlation between action acting _{x j} is on observation point _{R i} was _{y ij,} measuring apparatus 1, the load _{w i} is a function _{y i1} ~ as equal to the sum of the values of y _iN, by the equation (24), based on the weight _w 1 to w _N, calculates the effect _x 1 ~x _N observation point _R 1 to R _N. Therefore, according to the measurement method of the fourth embodiment, the measuring device 1 determines the action x _{j when the moving vehicle 6 passes through the observation point R j} of the superstructure 7 which is a structure from other actions. It can be calculated separately. For example, even when a plurality of vehicles 6 running parallel multiple lanes, the measuring apparatus 1, the influence of the action of the action x _i observation point R _i by the vehicle 6 traveling on the lane L _i is on the observation point R _j By excluding it, the action x _{j of the observation point R j} by the vehicle 6 traveling in the _{lane L j} can be calculated.

Furthermore, the measuring apparatus 1 determines whether the vehicle 6 is moved to the upper structure 7 alone, when it is determined that the vehicle 6 has moved the superstructure 7 alone, observation points R ₁ to R _N vehicle 6 based on the load _w 1 to w _N and acting _x 1 ~x _N by, updates the value of the coefficients of the function _{y ij.} Therefore, according to the measurement method of the fourth embodiment, the measuring device 1 considers the change over time in the state of the superstructure 7 by updating the value of the coefficient of the _{function y ij at any time, and the vehicle 6 has the superstructure.} The action x _j when passing through the observation point R _{j of} 7 can be calculated separately from other actions.

Further, according to the measurement method of the fourth embodiment, the measuring device 1 monitors the change over time in the state of the superstructure 7 based on the time series of the coefficient values of the _{updated function y ij, and the superstructure 1 is used.} It is possible to judge the abnormality of 7.

Further, in the measurement method of the fourth embodiment, the measuring device 1, based on the action _x 1 ~x _N observation point _R 1 to R _N, the load w by the vehicle 6 observation point _R 1 to R _{N '1} ~ 'calculates a _N, load w' w based on ₁ to w _'N, calculates the displacement of the observation point _R 1 to R _N. Therefore, according to the measurement method of the fourth embodiment, the measuring device 1, based on the action x _j observation point R _j calculated separately from the other action, the observation point R _j by the running of the vehicle 6 Loads and displacements can be calculated accurately. For example, even when a plurality of vehicles 6 running parallel multiple lanes, the measuring device 1, the load and displacement lane L _j by the vehicle 6 has been moved lane L _j can be accurately calculated. Based on this load and displacement information, for example, the measuring device 1 or the server 2 can accurately perform processing such as monitoring of an overloaded vehicle.

5. Modifications The present invention is not limited to the present embodiment, and various modifications can be carried out within the scope of the gist of the present invention.

In step S314~S316 step S162~S264 or 36, in the above FIG. 20, the measuring apparatus 1, the displacement _{u k} of the displacement u _'k and the observation point _{R k} calculated from the action _{x k} of the observation point _{R k} comparing the door, when the displacement u _'k and the displacement u _k are approximated, and adding 1 to the integer NL. On the other hand, in steps S162 to S264 of FIG. 20 or steps S314 to S316 of FIG. 36, the measuring device 1 calculates the maximum amplitude of the action x _{k of the observation point R k} , and the calculated maximum of the action x _k . When the amplitude is equal to or less than a predetermined threshold value, 1 may be added to the integer NL.

In the embodiments described above, the effects x _j of the observation point R _j when the vehicle 6 is traveling lane L _j, action x _j observation point R _j is a correlation between the action on the observation point R _i The function y _ij shown is assumed to be the first-order polynomial function shown in the equation (1), but when the correlation is not a straight line, the function y _ij is an m-th order polynomial function as shown in the equation (33). May be good.

In the embodiments described above, the observation apparatus for observing the observation point R ₁ to R _N is respectively the acceleration sensor is not limited to this, for example, the contact displacement sensor, a ring-type displacement meter, laser displacement meter , A pressure sensor, a displacement measuring device by image processing, or a displacement measuring device by an optical fiber. It is not necessary to the observation apparatus and observation point corresponds to one-to-one, may be a single observation device observes a part or the whole of the observation point R ₁ to R _N.

Contact displacement meter, the ring-type displacement meter, laser displacement meter, a displacement measuring device by image processing, a displacement measuring apparatus according to the optical fiber, measures the displacement in response to the action of observation points R ₁ to R _N of the vehicle 6. Measuring apparatus 1, based on the displacement of the observation point _R 1 to R _N, and calculates the load applied by the displacement or the vehicle 6 as a physical quantity of the observation points _R 1 to R _N. Pressure-sensitive sensor detects the change in stress in response to action on the observation point R ₁ to R _N of the vehicle 6. Measuring device 1 on the basis of the change in stress observation point _R 1 to R _N, and calculates the load applied by the displacement or the vehicle 6 as a physical quantity of the observation points _R 1 to R _N.

In the embodiments described above, the observation apparatus and observation apparatus for observing the observation point Q ₁ to Q _N observing observation point P ₁ to P _N, which respectively the acceleration sensor is not limited to this, for example, It may be an impact sensor, microphone, accelerometer or load cell. It is not necessary that the observation device and the observation point have a one-to-one correspondence, and one observation device may observe a part or all of the observation _{points P 1 to PN} and Q _{1 to} Q _N.

The impact sensor detects the impact acceleration as a response to the action on _{the observation points P 1 to PN} and Q _{1 to} Q _N of each axle of the vehicle 6. Measuring apparatus 1 obtains a first observation point information based on impact acceleration with respect to the observation point P ₁ to P _N, and acquires a second observation point information based on impact acceleration with respect to the observation point Q ₁ to Q _N. The microphone detects sound as a response to the action on _{the observation points P 1 to PN} and Q _{1 to} Q _N of each axle of the vehicle 6. Measuring apparatus 1 obtains a first observation point information based on sound for observation point P ₁ to P _N, and acquires a second observation point information based on sound for observation point Q ₁ to Q _N. The strain gauge and the load cell detect the stress change as a response to the action on _{the observation points P 1 to PN} and Q _{1 to} Q _{N of each axle of the vehicle 6.} Measuring apparatus 1 obtains a first observation point information based on the stress changes in the observation point P ₁ to P _N, and acquires a second observation point information based on the stress changes in observation point Q ₁ to Q _N.

In the embodiments described above, all directions in which the vehicle 6 is traveling lane L ₁ ~L _N are the same, the vehicle 6 with at least one lane and the other lanes of the lane L ₁ ~L _N The traveling direction may be different.

Further, in each of the above embodiments, the sensors 21, 22, and 23 are provided on the main girder G of the superstructure 7, respectively, but are provided on the surface and inside of the superstructure 7, the lower surface of the floor plate F, the pier 8a, and the like. It may be provided. Further, in each of the above embodiments, the road bridge is taken as an example of the bridge 5, but the present invention is not limited to this, and the bridge 5 may be a railway bridge, for example. Further, in each of the above embodiments, the superstructure of the bridge is taken as an example of the structure, but the structure is not limited to this, and the structure may be deformed by the movement of the moving body.

The above-described embodiments and modifications are merely examples, and the present invention is not limited thereto. For example, each embodiment and each modification can be combined as appropriate.

The present invention includes a configuration substantially the same as the configuration described in the embodiment, for example, a configuration having the same function, method and result, or a configuration having the same purpose and effect. The present invention also includes a configuration in which a non-essential part of the configuration described in the embodiment is replaced. The present invention also includes a configuration that exhibits the same effects as the configuration described in the embodiment or a configuration that can achieve the same object. Further, the present invention includes a configuration in which a known technique is added to the configuration described in the embodiment.

1 ... Measuring device, 2 ... Server, 4 ... Communication network, 5 ... Bridge, 6 ... Vehicle, 7 ... Superstructure, 7a ... Bridge floor, 7b ... Bearing, G ... Main girder, F ... Floor board, 8 ... Substructure, 8a ... pier, 8b ... abutment, 10 ... measurement system, 21 ... sensor, 22 ... sensor, 23 ... sensor, 110 ... control unit, 111 ... physical quantity acquisition unit, 112 ... action calculation unit, 113 ... displacement calculation unit, 114 ... Load calculation unit, 115 ... Independent movement determination unit, 116 ... Coefficient value update unit, 117 ... Abnormality determination unit, 118 ... Coefficient value calculation unit, 119 ... Output processing unit, 120 ... First communication unit, 130 ... Storage unit, 131 ... Measurement program, 140 ... 2nd communication unit, 150 ... Operation unit, 161 ... 1st observation point information acquisition unit, 162 ... 2nd observation point information acquisition unit

Claims (21)

For an integer N of 2 or more, at least one observation device for observing the first to Nth observation points of the structure arranged along the second direction in which the moving body intersects the first direction in which the structure moves. The physical quantity acquisition step of acquiring the physical quantity of the first to Nth observation points based on the observation information by
For any integer i of 1 or more and N or less and any integer j of 1 or more and N or less, the action x _j of the first observation point and the action x j of the action x _j on the i-th observation point. Assuming that the physical quantity of the i-th observation point acquired in the physical quantity acquisition step is equal to the sum of the values of the _{functions y i1 to y iN , where y ij} is the function showing the correlation of the above, in the physical quantity acquisition step. obtained on the basis of the physical quantity of the observation point of the first to N, the effect calculation step of calculating the effect x ₁ ~x _N observation points of the first to N,
A single movement determination step for determining whether or not the moving body has moved the structure independently, and
When it is determined in the independent movement determination step that the moving body has moved the structure independently, the physical quantity of the first to Nth observation points and the action of the _{first to Nth observation points x 1} A measurement method including a coefficient value update step for updating the coefficient value of the function y _ij based on ~ x _N. The measurement method according to claim 1, further comprising an abnormality determination step of determining an abnormality of the structure based on a time series of the coefficient values updated in the coefficient value update step. The measurement method according to claim 2, further comprising a notification step of notifying information prompting the inspection of the structure when the structure is determined to be abnormal in the abnormality determination step. Any of claims 1 to 3, wherein the physical quantity of the first to Nth observation points acquired in the physical quantity acquisition step is the physical quantity in the third direction intersecting the first direction and the second direction, respectively. The measurement method described in item 1. For an integer M larger than the integer N, the observation points N + 1 to M of the structure are arranged in the fourth direction intersecting the first direction.
For an integer L larger than the integer M, the observation points M + 1 to L of the structure are arranged in the fifth direction intersecting the first direction.
In the single movement determination step, the moving body is the observation point of the N + k for an arbitrary integer k of 1 or more and MN or less, and an arbitrary integer m of 1 or more and LM or less and different from k. If no other moving object is moving between the N + m observation point and the M + m observation point while moving between the M + k observation point and the M + k observation point, the moving body alone said. The measurement method according to any one of claims 1 to 4, wherein it is determined that the structure has been moved. In the single movement determination step, for any integer i of 1 or more and N or less, the _{physical quantity calculated from the action x i} of the observation point i and the observation of the i acquired in the physical quantity acquisition step. The measurement method according to any one of claims 1 to 4, wherein it is determined that the moving body has moved the structure by itself when the physical quantity of the point is close to the physical quantity. For an integer M larger than the integer N, the observation points N + 1 to M of the structure are arranged in the fourth direction intersecting the first direction.
For an integer L larger than the integer M, the observation points M + 1 to L of the structure are arranged in the fifth direction intersecting the first direction.
In the single movement determination step, the moving body is the observation point of the N + k for an arbitrary integer k of 1 or more and MN or less, and an arbitrary integer m of 1 or more and LM or less and different from k. While moving between the observation point of the M + k and the observation point of the M + k, another moving body does not move between the observation point of the N + m and the observation point of the M + m, and is 1 or more and N or less. _{When the physical quantity calculated from the action xi of the i-} th observation point and the physical quantity of the i-th observation point acquired in the physical quantity acquisition step are close to any integer i of the above. The measurement method according to any one of claims 1 to 4, wherein it is determined that the moving body has moved the structure by itself. The measurement method according to any one of claims 1 to 7, wherein the function y _ij is a polynomial function of the action x _j. The structure has first to Nth paths through which the moving body can move.
The measurement method according to any one of claims 1 to 8, wherein the first to first observation points are associated with the first to first N paths. The structure has first to Nth paths through which the moving body can move.
The N + 1 to M observation points are associated with the first to Nth paths and are set at the first end of the path.
The first to eighth observation points according to any one of claims 1 to 8, which are associated with the first to Nth paths and are set at the second end of the path. Measurement method. The measurement method according to any one of claims 1 to 10, wherein the physical quantity of the first to Nth observation points acquired in the physical quantity acquisition step is a displacement or a load due to the moving body. The structure is a superstructure of a bridge and
The superstructure is a structure passed to any one of adjacent abutments and piers, two adjacent abutments, or two adjacent piers.
Both ends of the superstructure are located at the positions of the adjacent abutments and piers, the positions of the two adjacent abutments, or the positions of the two adjacent piers.
The measurement method according to any one of claims 1 to 11, wherein the bridge is a road bridge or a railway bridge. The measuring method according to any one of claims 1 to 12, wherein the moving vehicle is a railroad vehicle, an automobile, a tram, a construction vehicle, or a military vehicle. The measurement method according to any one of claims 1 to 13, wherein the observation device for observing the first to first N observation points is an acceleration sensor. The observation device for observing the first to Nth observation points is a contact type displacement meter, a ring type displacement meter, a laser displacement meter, a pressure sensitive sensor, a displacement measurement device by image processing, or a displacement measurement device by optical fiber. The measuring method according to any one of claims 1 to 13. The measuring method according to claim 5 or 7, wherein the observation device for observing the N + 1 to M th observation points and the observation device for observing the M + 1 to L th observation points are acceleration sensors. The observation device for observing the N + 1 to M th observation points and the observation device for observing the M + 1 to L th observation points are an impact sensor, a microphone, a strain gauge or a load cell, according to claim 5 or 7. Measurement method. The measuring method according to any one of claims 1 to 17, wherein the structure is a structure in which BWIM (Bridge Weigh in Motion) functions. For an integer N of 2 or more, at least one observation device for observing the first to Nth observation points of the structure arranged along the second direction in which the moving body intersects the first direction in which the structure moves. A physical quantity acquisition unit that acquires the physical quantities of the first to Nth observation points based on the observation information obtained by
For any integer i of 1 or more and N or less and any integer j of 1 or more and N or less, the action x _j of the first observation point and the action x j of the action x _j on the i-th observation point. when the function indicating the correlation of the y _ij, the physical quantity of the observation point of the i-th said physical quantity acquisition unit has acquired, as equal to the sum of the values of the function y _i1 ~y _iN, said physical quantity obtaining unit based on the physical quantity of the observation point of the acquired first to N, a working calculator for calculating the effects x ₁ ~x _N observation points of the first to N,
A single movement determination unit that determines whether or not the moving body has moved the structure independently,
When the independent movement determination unit determines that the moving body has moved the structure independently, the physical quantity of the first to Nth observation points and the action x of the first to Nth observation points. A measuring device including a coefficient value updating unit for updating the coefficient value of the function y _{ij based on 1 to} x _N. The measuring device according to claim 19 and
A measurement system including the observation device. For an integer N of 2 or more, at least one observation device for observing the first to Nth observation points of the structure arranged along the second direction in which the moving body intersects the first direction in which the structure moves. The physical quantity acquisition step of acquiring the physical quantity of the first to Nth observation points based on the observation information by
For any integer i of 1 or more and N or less and any integer j of 1 or more and N or less, the action x _j of the first observation point and the action x j of the action x _j on the i-th observation point. Assuming that the physical quantity of the i-th observation point acquired in the physical quantity acquisition step is equal to the sum of the values of the _{functions y i1 to y iN , where y ij} is the function showing the correlation of the above, in the physical quantity acquisition step. obtained on the basis of the physical quantity of the observation point of the first to N, the effect calculation step of calculating the effect x ₁ ~x _N observation points of the first to N,
A single movement determination step for determining whether or not the moving body has moved the structure independently, and
When it is determined in the independent movement determination step that the moving body has moved the structure independently, the physical quantity of the first to Nth observation points and the action x _{1 of the first to Nth observation points.} A measurement program that causes a computer to execute a coefficient value update step of updating the coefficient value of the function y _ij based on ~ x _N.

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