JP2002228515A - Strain sensor mounting position setting assisting method, strain sensor mounting position setting assisting device, and strain sensor mounting position setting assisting program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a strain sensor mounting position setting assisting device allowing easy setting of mounting positions for strain sensors. SOLUTION: This device for finding mounting positions on a load bearing member allowing accurate measurement by means of strain sensors is characterized by being equipped with a strain change information collection means 30a1 for collecting strain change information expressing changes in strain caused by changes in the loading and unloading of a vehicle at each of a plurality of observation points on the bearing member, a demarcation means 30a2 for demarcating mounting positions on the bearing member enabling the strain sensors to accurately measure strain based on the change information collected by the collection means 30a1, a mounting position information producing means 30a3 for producing mounting position information expressing the mounting positions demarcated by the demarcation means 30a2, and an output means 30a4 for outputting the position information produced by the producing means 30a3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a strain sensor mounting position setting support method, a strain sensor mounting position setting support device, and a strain sensor mounting position setting support program, and more particularly, to a load receiver for receiving a load applied to a vehicle. A strain sensor mounting method for mounting a strain sensor for measuring a strain amount generated on a member to the load receiving member, and a mounting position of the strain sensor for measuring a strain amount generated on the load receiving member receiving a load applied to the vehicle with respect to the load receiving member As a means for supporting the setting of the mounting position of the strain sensor for measuring the amount of distortion generated in the load receiving member receiving the load applied to the vehicle with respect to the load receiving member. The present invention relates to a strain sensor mounting position setting support program for causing a computer to function.

[0002]

2. Description of the Related Art Conventionally, load measurement of a vehicle is mainly performed on a large vehicle such as a truck. This is done for the purpose of preventing overloading of trucks, etc., which not only impairs the driving operability of the vehicle itself and causes a traffic accident but also causes damage to the vehicle and the road surface. ing. Normally, the load of a vehicle is measured by a load measuring device installed on the road. A wheel is mounted on a load plate provided with a load converter, and the wheel weight or axle weight of the wheel is measured. And the like are added to determine the vehicle weight, and further, the weight of the occupants or the vehicle itself is subtracted from the measured vehicle weight to determine the loaded load amount.

However, the above-mentioned load measuring device is very large and its installation cost is high, so that the installation place and the number of installations are very limited. For this reason, the number of vehicles that can be subjected to the measurement of the loaded weight is only a small part of the entire vehicle, and is insufficient to prevent overloading. Therefore, there is a vehicle in which the load applied to the bed of a vehicle is transmitted to the axle, and the amount of distortion of the axle caused by the load is measured to measure the load for each vehicle.

FIG. 21 is an exploded perspective view showing an assembled portion of a conventional vehicle carrier frame 1, an axle (corresponding to a load receiving member) 2, a leaf spring 3, and the like. Are provided with two support portions 1a, and both ends of the leaf spring 3 are supported by the support portions 1a. Also, leaf spring 3
Is fixed via a mounting member 6 to an axle case 2 a provided on the axle 2. Axle 2
A strain sensor 7 such as a sensing element for measuring the amount of distortion of the axle 2 is fixed to the upper surface of the vehicle, and the amount of distortion due to the load applied to the distortion sensor 7 is measured to measure the load for each vehicle. There has been a conventional vehicle load measuring device.

[0005]

However, since the hysteresis of the strain generated on the axle 2 of the above-described load measuring device for a vehicle differs between, for example, the front and the rear in the traveling direction, the hysteresis is measured depending on the mounting position of the strain sensor 7. An error occurred in the load. For this reason, it is necessary to find an accurate mounting position of the strain sensor with respect to the axle 2, and there has been a problem that an enormous amount of time is required for the mounting operation. Also, since this mounting work often depends on the experience, skill, etc. of the worker,
If an inexperienced worker performs the mounting operation, there is a possibility that the time required for the mounting operation will be further lengthened or the measurement accuracy will be reduced.

Accordingly, the present invention has been made in view of the above-described problems,
Provided are a strain sensor mounting position setting support method, a strain sensor mounting position setting support device, and a strain sensor mounting position setting support program that can easily set a mounting position on a load receiving member capable of accurate measurement by a strain sensor. The challenge is to do.

[0007]

According to a first aspect of the present invention, there is provided a method for supporting the setting of a position at which a strain sensor is mounted, which measures the amount of strain generated in a load receiving member receiving a load applied to a vehicle. A strain sensor mounting position setting support method that supports setting of a mounting position of a strain sensor with respect to the load receiving member, wherein the load receiving member is provided with a plurality of observation points in the load receiving member according to changes in loading and unloading of the vehicle. A process of collecting strain change information indicating a change in the amount of strain that occurs, and a process of defining an attachment position where the strain sensor can accurately measure the amount of strain based on the collected strain change information. Features.

According to the strain sensor mounting position setting support method of the present invention described in claim 1, for example, the strain change information for each of a plurality of observation points on the load receiving member generated according to actual measurement, simulation, or the like is obtained. When collected, an attachment position where the strain sensor can accurately measure the strain amount is defined based on the strain change information. Therefore, the strain change information indicates a change in the amount of strain generated according to the change in the loading and unloading of the vehicle, and determines the mounting position of the strain sensor with respect to the load receiving member based on a plurality of strain change information collected from each observation point. Since it is defined, it is possible to define a mounting position where the amount of distortion can be accurately measured. Therefore, since the worker, the designer, etc. can determine the mounting position based on the distortion change information, there is no need to find the accurate mounting position, and the experience and skill of the worker, the designer, etc. are also related. Therefore, it is possible to easily set the mounting position on the load receiving member that allows accurate measurement by the strain sensor.

In order to solve the above-mentioned problem, the strain sensor mounting position setting support method according to claim 2 has been made according to the present invention.
A strain sensor mounting position setting support method for supporting setting of a mounting position of a strain sensor with respect to the load receiving member for measuring a strain amount generated in a load receiving member receiving a load applied to a vehicle, the method comprising: A process of collecting strain change information indicating a change in the strain amount generated in accordance with a change in the loading and unloading of the vehicle for each point; and mounting the strain sensor on the collected strain change information and the load receiving member. Defining a mounting position at which the strain sensor can accurately measure the amount of distortion based on mountable region information indicating a region in which the distortion is possible.

According to the strain sensor mounting position setting support method of the present invention described in claim 2, for example, the strain change information for each of a plurality of observation points on the load receiving member generated according to actual measurement, simulation, or the like is obtained. When collected, a mounting position at which the strain sensor can accurately measure the strain is defined based on the strain change information and the mountable area information indicating the area of the load receiving member to which the strain sensor can be mounted. Therefore, the strain change information indicates a change in the amount of strain generated in accordance with a change in the loading and unloading of the vehicle, and a plurality of strain change information collected from each observation point, and a strain sensor can be attached to the load receiving member. Since the mounting position of the strain sensor with respect to the load receiving member is defined based on the mountable area information indicating the area, the mounting position where the strain sensor can be easily mounted and the strain amount can be accurately measured can be defined. it can. Therefore, the worker, the designer, and the like can define the mounting position based on the distortion change information and the mountable area information, so that it is not necessary to find the mounting position with high accuracy. Since the experience and the skill level are not related, the installation of the strain sensor is easy, and the setting of the accurate mounting position of the strain sensor on the load receiving member can be supported.

According to the third aspect of the present invention, there is provided a strain sensor mounting position setting support apparatus for solving the above-mentioned problems.
As shown in the basic configuration diagram of FIG. 1, a strain sensor mounting position setting support device that supports setting of a mounting position of a strain sensor for measuring a strain generated in a load receiving member receiving a load applied to a vehicle with respect to the load receiving member. And a strain change information collecting means 30a1 for collecting strain change information indicating a change in the amount of distortion generated according to a change in loading and unloading of the vehicle at each of a plurality of observation points in the load receiving member.
Based on the strain change information collected by the strain change information collecting means 30a1, a defining means 30a2 for defining a mounting position on the load receiving member at which the strain sensor can accurately measure the strain amount; and the defining means. A mounting position information generating unit 30a3 that generates mounting position information indicating the mounting position defined by the mounting position information 30a2, and an output unit 30a4 that outputs the mounting position information generated by the mounting position information generating unit 30a3. And

According to the strain sensor mounting position setting support apparatus of the present invention, when the strain change information collecting means 30a1 collects the strain change information for each of a plurality of observation points, the distortion change information is collected. The mounting position on the load receiving member at which the distortion sensor can accurately measure the distortion amount based on the information is defined by the defining means 30a2. Then, when the mounting position information indicating the mounting position is generated by the mounting position information generating means 30a3, the mounting position information is output to, for example, a display device or a design device by the output means 30a4. Therefore, when distortion change information indicating a change in the amount of distortion generated in response to a change in the loading and unloading of the vehicle is generated according to, for example, an actual measurement or a simulation, a plurality of distortion changes collected from each observation point are obtained. Since the mounting position of the strain sensor with respect to the load receiving member is defined based on the information, it is possible to define the mounting position where the amount of strain can be accurately measured. Since the mounting position information indicating the mounting position is output, the worker, the designer, and the like need not refer to the mounting position information to find the accurate mounting position in the related art. It is possible to easily set the mounting position on the load receiving member where accurate measurement can be performed. Therefore, it is possible to assist the operator, the designer, or the like in setting the mounting position of the load receiving member that can be accurately measured by the strain sensor.

According to a fourth aspect of the present invention, there is provided a strain sensor mounting position setting support apparatus according to the third aspect, as shown in FIG.
The mounting position information generating means 30a3 generates the mounting position information such that the mounting position is superimposed on a schematic view of the load receiving member in plan view.

According to the strain sensor mounting position setting assisting device of the present invention, the mounting position information is superimposed on the load receiving member so that the mounting position is superimposed on the schematic view in plan view. Generated by the generating means 30a3. Therefore, the mounting position of the strain sensor can be indicated on the schematic diagram corresponding to the load receiving member by the mounting position information, so that an operator, a designer, and the like can easily grasp the mounting position. Therefore, it is possible to support quick setting of the mounting position on the load receiving member that can be accurately measured by the strain sensor.

According to a fifth aspect of the present invention, there is provided a strain sensor mounting position setting support apparatus according to the third or fourth aspect, as shown in FIG. When there are a plurality of the attachment positions where the amount can be accurately measured, the defining means 30a2 assigns the order and performs the definition of the plurality of the attachment positions.

According to the strain sensor mounting position setting support apparatus of the present invention, when there are a plurality of strain sensor mounting positions on the load receiving member capable of accurately measuring the amount of strain, the defining means 30a2 can determine A plurality of attachment positions are defined by being ranked according to measurement accuracy, difficulty of attachment, and the like. Therefore, even if a plurality of mounting positions are defined, the order is assigned to each mounting position, so that a worker, a designer, and the like can select a vehicle structure, a load measuring device configuration, and the like from among the plurality of mounting positions. A suitable mounting position can be easily set. Therefore, it is possible to support appropriate setting of the mounting position on the load receiving member that can be accurately measured by the strain sensor.

According to a sixth aspect of the present invention, there is provided a strain sensor mounting position setting support apparatus according to any one of the third to fifth aspects, as shown in FIG. And a mountable area information capturing means 30a5 for capturing mountable area information indicating an area where the strain sensor can be mounted on the load receiving member, and the defining means 30a2 further includes the mountable area information capturing means. The definition is performed with reference to the attachable area information taken in by 30a5.

According to the distortion sensor mounting position setting support apparatus of the present invention, when the mountable area information is fetched by the mountable area information fetching means 30a5, the mountable area information and distortion change are obtained. The mounting position based on the information is defined by the defining means 30a2. Therefore, the area where the strain sensor can be mounted on the load receiving member is indicated by the mountable area information, and the mounting position of the strain sensor is defined from this area, so that it is difficult to mount the strain sensor. Can be prevented from being defined as a mounting position. Further, if the area where the strain sensor is to be mounted is designated by the mountable area information, a more appropriate mounting position can be defined. Therefore, it is possible to assist the setting of the mounting position on the load receiving member in which the strain sensor can be easily mounted and the accurate measurement can be performed by the strain sensor.

According to a seventh aspect of the present invention, there is provided a strain sensor mounting position setting support apparatus as set forth in any one of the third to fifth aspects, as shown in FIG. And a mountable area information capturing means 30a5 for capturing mountable area information indicating an area where the strain sensor can be mounted on the load receiving member, wherein the strain change information collecting means 30a1 includes the loadable area information. The distortion change information of the observation point corresponding to the region indicated by the captureable region information captured by the capture unit 30a5 is collected.

According to the strain sensor mounting position setting support device of the present invention, when the mountable area information is fetched by the mountable area information fetching means 30a5, the area indicated by the mountable area information is displayed. The distortion change information of the observation point corresponding to the distortion change information collection means 30a1
Collected by Therefore, only the strain change information of the observation point corresponding to the area where the strain sensor can be mounted is collected, and the mounting position is defined based on the strain change information. Can be prevented from being defined as a mounting position. Further, if the area where the strain sensor is to be mounted is designated by the mountable area information, a more appropriate mounting position can be defined. Therefore, it is possible to assist the setting of the mounting position on the load receiving member in which the strain sensor can be easily mounted and the accurate measurement can be performed by the strain sensor.

According to an eighth aspect of the present invention, there is provided a strain sensor mounting position setting support apparatus according to any one of the third to sixth aspects, as shown in FIG. An optimal mounting position information storage unit 30d1 for storing, for each of the set load receiving members, optimum mounting position information indicating an optimum mounting position set by the strain sensor, and similar to the load receiving member for which the mounting position is set. Extracting means 30a6 for extracting the optimum mounting position information corresponding to the set load receiving member from the optimum mounting position information storage means 30d1, and the defining means 30a2 is further extracted by the extracting means 30a6. The definition is performed with reference to the optimum mounting position information.

According to the strain sensor mounting position setting support apparatus of the present invention, the set load receiving member having a similar shape, configuration, etc., to the load receiving member whose mounting position is to be set, is provided. The corresponding optimum mounting position information is extracted by the extracting means 30a6 and the optimum mounting position information storing means 30d.
Extracted from 1. Then, the mounting position based on the optimum mounting position information and the distortion change information is defined by the defining means 30a2. Therefore, since the mounting position is defined with reference to the optimum mounting position of the set load receiving member similar to the load receiving member to be set, the result of the previously set optimum mounting position is reflected. Therefore, even an inexperienced worker or designer can easily set a mounting position suitable for the structure of the vehicle, the configuration of the load measuring device, and the like. Therefore, it is possible to support the optimal setting of the mounting position on the load receiving member that can be accurately measured by the strain sensor.

According to a ninth aspect of the present invention, there is provided a strain sensor mounting position setting support program for solving the above-mentioned problem, which is generated in a load receiving member which receives a load applied to a vehicle, as shown in a basic configuration diagram of FIG. A strain sensor mounting position setting support program for causing a computer to function as a means for supporting setting of a mounting position of a strain sensor for measuring a strain amount with respect to the load receiving member, the program comprising a plurality of observation points in the load receiving member. Strain change information collecting means 3 for collecting strain change information indicating a change in the amount of distortion generated according to a change in loading and unloading of the vehicle for each vehicle
0a1, defining means 30a2, and defining means 30a2 for defining a mounting position on the load receiving member at which the strain sensor can accurately measure the strain amount based on the strain change information collected by the strain change information collecting means 30a1.
A program for causing a computer to function as mounting position information generating means 30a3 for generating mounting position information indicating the mounting position defined by the computer, and output means 30a4 for outputting the mounting position information generated by the mounting position information generating means 30a3. It is characterized by being.

According to the distortion sensor mounting position setting program according to the ninth aspect of the present invention, when the computer collects the distortion change information for each of a plurality of observation points, the computer obtains the distortion sensor based on the distortion change information. Defines the mounting position on the load receiving member where the amount of distortion can be accurately measured. When the attachment position information indicating the attachment position is generated, the attachment position information is output to, for example, a display device, a design device, or the like. Therefore, the distortion change information indicating the change in the amount of distortion generated according to the change in the loading and unloading of the vehicle,
For example, when generated in accordance with actual measurement, simulation, etc., the strain sensor mounting position with respect to the load receiving member is defined based on a plurality of strain change information collected from each observation point, so that the strain amount is accurately measured. It is possible to define possible mounting positions. Since the mounting position information indicating the mounting position is output, the worker, the designer, and the like need not refer to the mounting position information to find the accurate mounting position in the related art. It is possible to easily set the mounting position on the load receiving member where accurate measurement can be performed. Therefore, the setting of the mounting position of the load receiving member, which can be accurately measured by the strain sensor, by the operator or the designer can be supported by the computer.

According to a tenth aspect of the present invention, there is provided a distortion sensor mounting position setting support program according to the ninth aspect, as shown in the basic configuration diagram of FIG. The generating means 30a3 further includes
The program is a program for causing a computer to function as means for generating the mounting position information so that the mounting position is superimposed on a schematic view of the load receiving member in plan view.

According to the distortion sensor mounting position setting support program of the present invention described in claim 10, the computer transmits the mounting position information so that the mounting position is superimposed on a schematic view of the load receiving member in plan view. Generate. Therefore, the mounting position of the strain sensor can be indicated on the schematic diagram corresponding to the load receiving member by the mounting position information, so that an operator, a designer, and the like can easily grasp the mounting position. Therefore, it is possible to assist the computer to quickly set the mounting position on the load receiving member that can accurately measure by the strain sensor.

According to an eleventh aspect of the present invention, there is provided a distortion sensor mounting position setting support program according to the ninth or tenth aspect, as shown in the basic configuration diagram of FIG. A program for causing a computer to function as the means for setting the plurality of the attachment positions by assigning a ranking when there are a plurality of the observation points capable of accurately measuring the distortion amount. It is characterized by.

According to the strain sensor mounting position setting support program of the present invention described in claim 11, when the computer has a plurality of strain sensor mounting positions capable of accurately measuring the amount of strain on the load receiving member, the computer may perform measurement, for example. A plurality of attachment positions are defined by assigning a ranking according to accuracy, difficulty of attachment, and the like. Therefore, even if a plurality of mounting positions are defined, the order is assigned to each mounting position, so that a worker, a designer, and the like can select a vehicle structure, a load measuring device configuration, and the like from among the plurality of mounting positions. A suitable mounting position can be easily set. Therefore, the computer can assist the computer in appropriately setting the mounting position on the load receiving member that allows accurate measurement by the strain sensor.

According to a twelfth aspect of the present invention for solving the above-mentioned problem, as shown in the basic configuration diagram of FIG. The mountable area information capturing means 30a5, which captures mountable area information indicating the area where the strain sensor can be mounted on the load receiving member, and the defining means 30a2 are further captured by the mountable area information capturing means 30a5. A program for causing a computer to function as means for performing the definition with reference to the mountable area information.

According to the distortion sensor mounting position setting support program of the present invention, when the computer captures the mounting area information, the computer determines the mounting position based on the mounting area information and the distortion change information. Is defined.
Therefore, the area where the strain sensor can be mounted on the load receiving member is indicated by the mountable area information, and the mounting position of the strain sensor is defined from this area, so that it is difficult to mount the strain sensor. Can be prevented from being defined as a mounting position. Further, if the area where the strain sensor is to be mounted is designated by the mountable area information, a more appropriate mounting position can be defined. Therefore, the setting of the mounting position in the load receiving member, in which the strain sensor can be easily mounted and the accurate measurement can be performed by the strain sensor, can be assisted by the computer.

According to a thirteenth aspect of the present invention, there is provided a distortion sensor mounting position setting support program according to any one of the ninth to eleventh aspects, as shown in FIG. The mountable area information capturing means 30a5 for capturing mountable area information indicating the area on the load receiving member where the strain sensor can be mounted, and the strain change information collecting means 30a1 are further provided with the captureable area information capture means. It is a program for causing a computer to function as means for collecting the distortion change information of the observation point corresponding to the area indicated by the captureable area information captured by the means 30a5.

According to the distortion sensor mounting position setting program of the present invention, when the computer captures the mountable area information, the computer distorts the observation point corresponding to the area indicated by the mountable area information. Gather change information. Therefore, only the strain change information of the observation point corresponding to the area where the strain sensor can be attached is collected,
Since the attachment position is defined based on the distortion change information, it is possible to prevent a position where the strain sensor is difficult to attach from being defined as the attachment position. Further, if the area where the strain sensor is to be mounted is designated by the mountable area information, a more appropriate mounting position can be defined. Therefore, the setting of the mounting position in the load receiving member, in which the strain sensor can be easily mounted and the accurate measurement can be performed by the strain sensor, can be assisted by the computer.

According to a fourteenth aspect of the present invention, there is provided a computer-readable storage medium storing a distortion sensor mounting position setting program according to any one of the ninth to twelfth aspects, as shown in FIG. From the optimal mounting position information storage means 30d1 for storing the optimal mounting position information indicating the optimal mounting position set by the strain sensor for each of the set load receiving members,
The extracting means 30a6 and the defining means 30a2 for extracting the optimum mounting position information corresponding to the set load receiving member similar to the load receiving member for which the mounting position is to be set from the optimum mounting position information storage means 30d1. Further, it is a program for causing a computer to function as means for performing the definition with reference to the optimum mounting position information extracted by the extracting means 30a6.

[0034] According to the distortion sensor mounting position setting support program of the present invention described in claim 14, the computer sets the set load having a similar shape, configuration, and the like to the load receiving member whose mounting position is to be set. The optimum mounting position information corresponding to the receiving member is stored in the optimum mounting position information storage means 30d.
Extract from 1. Then, a mounting position is defined based on the optimum mounting position information and the distortion change information. Therefore, since the mounting position is defined with reference to the optimum mounting position of the set load receiving member similar to the load receiving member to be set, the result of the previously set optimum mounting position is reflected. Therefore, even an inexperienced worker or designer can easily set a mounting position suitable for the structure of the vehicle, the configuration of the load measuring device, and the like. Therefore, the optimal setting of the mounting position on the load receiving member, which can be accurately measured by the strain sensor, can be assisted by the computer.

[0035]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A strain sensor mounting position setting support method, a strain sensor mounting position setting support device, and a strain sensor mounting position setting support program according to the present invention support setting of a strain sensor mounting position with respect to an axle. An example of the embodiment will be described with reference to FIGS. The same or corresponding portions as those described in the description of the related art are denoted by the same reference numerals, and detailed description thereof will be omitted.

FIG. 2 is a block diagram showing a schematic configuration of the strain sensor mounting position setting support device according to the present invention.
FIG. 4 is a diagram for explaining a measurement example of the measurement device of FIG. 2;
4 is a graph showing the measurement result at the observation point 5-1 in FIG. 3, FIG. 5 is a graph showing the measurement result at the observation point 5-2 in FIG. 3, and FIG. 6 is a graph showing the measurement result at the observation point 5-1 in FIG. 3
7 is a graph showing the measurement results of the observation points 5-4 in FIG. 3, and FIG. 8 is a graph showing the measurement results of the observation points 5-4 in FIG.
It is a graph which shows the measurement result of observation point 5-5 of,
9 is a graph showing the measurement result at the observation point 5-6 in FIG. 3, FIG. 10 is a graph showing the measurement result at the observation point 5-7 in FIG. 3, and FIG. 11 is a graph showing the measurement result at the observation point 5 in FIG.
FIG. 12 is a graph showing a measurement result at −8, and FIG. 12 is a graph showing a measurement result at observation point 5-9 in FIG.
3 is a graph showing the measurement result of the observation point 5-10 in FIG. 3, FIG. 14 is a graph showing the measurement result of the observation point 5-11 in FIG. 3, and FIG. 15 is stored in the storage device of FIG. FIG. 16 is a diagram showing an example of the optimum mounting position database of FIG. 15, and FIG. 17 is a diagram showing an outline of processing performed by the CPU of FIG. 2 in the first embodiment. FIG. 18 is a diagram for explaining the operation of the first embodiment, and FIG. 19 is an example of an outline of processing performed by the CPU in FIG. 2 in the second embodiment. It is a flowchart, FIG.
0 is a diagram for explaining the operation of the second embodiment.

In FIG. 2, reference numeral 30 denotes a strain sensor mounting position setting assisting device. The strain sensor mounting position setting assisting device 30 is realized by using a computer. And a central processing unit (CPU) 30a for controlling the operation of the CPU. The CPU 30a has a CPU
A ROM 30b, which is a read-only memory storing a program and the like for the 30a, and a RAM 30c, which is a readable and writable memory having a work area for storing various data necessary for processing operations of the CPU 30a, are connected.

The CPU 30a further includes a storage device 30d.
Are connected via a bus B, and the storage device 30d
Uses a hard disk device or the like. The storage device 30d stores a strain sensor mounting position setting support program file and various databases of the present invention described later.

The CPU 30a further includes an input device interface (I / F) 30e, a display device interface (I / F) 30f, and a measurement device interface (I / F).
30 g are connected via the bus B. Input device I /
When the input device 31 having a keyboard and a mouse is connected to the F30e, various input data input from the input device 31 are input to the CPU 30a via the bus B.

The display device I / F 30f is connected to a display device (corresponding to a management-side display unit) 32 configured using a CRT, a liquid crystal display, or the like. The display device I / F 30f converts the display content of the display device 32 into a CP.
The control is performed based on an instruction from U30a.

The measuring device I / F 30g has a measuring device 40
Is connected, and when the measuring device 40 measures a change in the amount of distortion according to a change in the loading and unloading of the vehicle at each of a plurality of observation points in the load receiving member, the measurement result is transmitted to the CPU 30a as distortion change information. Is output.

Here, an example of measurement in the measuring device 40 will be described with reference to FIG. In FIG. 3, a center portion of a leaf spring 3 is fixed to an axle 2 corresponding to a load receiving member described in the related art by a mounting member, and a tire 4 is fixed to an end of the axle 2. ing. When a plurality of observation points 5-1 to 5-11 on the upper surface of the axle 2 are set, a change in the distortion amount for each point is measured by a distortion sensor or the like.

In this embodiment, the observation points 5-1 to 5-1
The observation point 5-5 is located near the front of the axle 2 in the traveling direction of the axle 2, the observation points 5-5 and 5-6 are located in the center of the axle 2.
7 to 5-10 are sequentially set toward the rear of the axle 2 from the leaf spring 3 toward the center of the vehicle. Further, an observation point 5-11 is set on the upper surface of the axle 2 located between the leaf spring 3 and the tire 4.

The number of observation points is not limited to this. The number of points is increased and the observation points are set in a matrix. An area where the strain sensor can be easily attached is specified and the observation point is set only in that area. Various embodiments can be adopted.

Next, an example of a measurement result indicating the relationship between the strain amount and the tire load at each of the observation points 5-1 to 5-11 measured by the measuring device 40 corresponds to each of the above-described strain change information. This will be described with reference to the graphs in FIGS. The vertical axis of each graph is the strain amount [μ-S], the horizontal axis is the tire load [ton], and the solid line in the graph indicates the measured value in the axial direction and the broken line indicates the measured value in the traveling direction.

As a measuring method, a load is added to an empty vehicle while increasing the load (corresponding to the load).
When the maximum load capacity is reached, a strain sensor capable of measuring the strain amount corresponding to the tire load when the load is gradually reduced (corresponding to unloading) until the load becomes zero, and measuring the strain amount in the axial direction and the traveling direction. It is measured in.

FIG. 4 shows an observation point 5-1, FIG. 5 shows an observation point 5-2, FIG. 6 shows an observation point 5-3, FIG. 7 shows an observation point 5-4, FIG. Is observation point 5-6, FIG. 10 is observation point 5-7, FIG.
1 is observation point 5-8, FIG.
9, FIG. 13 shows the measurement results at observation point 5-10, and FIG. 14 shows the measurement results at observation point 5-11.

From the measurement results shown in FIGS. 4 to 7, near the front of the axle 2 in the traveling direction, the amount of distortion in the traveling direction is measured as a positive value, and the amount of distortion in the axial direction is measured as a negative value. You. And the error of the amount of distortion generated in the axle 2 between loading and unloading is small. Therefore, since no twist or the like occurs and the hysteresis error is small, it can be determined that an accurate strain amount can be measured by the strain sensor.

Also, from the measurement results shown in FIGS. 8 and 9,
Near the center of the axle 2, both the traveling direction and the axial direction have negative values. And axle 2 for loading and unloading
Is small. Therefore,
Although the hysteresis error is small, twisting occurs, so that it can be determined that even if a strain sensor is attached, the amount of strain cannot be measured accurately.

Further, from the measurement results shown in FIGS. 10 to 13, near the rear of the axle 2 in the traveling direction, the amount of distortion in the traveling direction is measured as a negative value near 0, and the amount of distortion in the axial direction is negative. It is measured as the value of The error in the amount of distortion generated in the axle 2 between loading and unloading is slightly larger than each point described above. Therefore, since the hysteresis error is large and the torsion occurs, it can be determined that the amount of distortion cannot be measured accurately even if the distortion sensor is attached.

Further, based on the measurement results shown in FIG.
In the vicinity located between the leaf spring 3 and the tire 4, the amount of distortion in the traveling direction is measured as a positive value, and the amount of distortion in the axial direction is measured as a negative value. And the error of the amount of distortion generated in the axle 2 between loading and unloading is small. Therefore, since no twist or the like occurs and the hysteresis error is small, it can be determined that an accurate strain amount can be measured by the strain sensor.

Next, the strain sensor mounting position setting support device 30
The information stored in the storage device 30d will be described. As shown in FIG. 15, the storage device 30d described above stores a strain sensor mounting position setting support program file F, an optimum mounting position database DB, and the like.

The strain sensor mounting position setting support program file F is used to support the setting of the mounting position of the strain sensor for measuring the amount of strain generated on the axle 2 (corresponding to a load receiving member) 2 which receives a load applied to the vehicle. A program for causing a computer to function as a means.

The optimum mounting position database DB stores a plurality of optimum mounting position information indicating the optimum mounting position at which the strain sensor is mounted on the conventional axle (corresponding to the set load receiving member) 2 for each of the set load receiving members. The optimum mounting position information is accumulated whenever the mounting position of the strain sensor is determined. Therefore, the conventional optimal mounting position can be considered by referring to the optimal mounting position information corresponding to the set axle similar to the shape and the configuration of the axle 2 when defining the mounting position, so that the more accurate Mounting position can be defined.

For example, the optimum mounting position database DB stores a plurality of optimum mounting position information corresponding to each axle 2 for vehicle type a, vehicle type b, vehicle type c,. The optimum mounting position information for the vehicle type a includes the dimensions, shape, mounting position of the axle 2 and the like in order to indicate the optimum mounting position BEa (see FIG. 16 (a)) located forward of the axle 2 in the traveling direction. It has various data indicating the configuration of the vehicle and the like.

The optimum mounting position information for the vehicle type b includes the optimum mounting position BEb (see FIG. 16B) located on the upper surface of the axle 2 between the leaf spring 3 and the tire 4, and the vehicle type c. The optimal mounting position information for axle 2
Optimal mounting position BEc located near the rear in the direction of travel
Various data for indicating [refer to FIG.
As well as for It should be noted that a vehicle design drawing or the like can be used as the above-described optimal mounting position information.

In this embodiment, various files such as the strain sensor mounting position setting support program file F and the optimum mounting position database DB are stored on a CD-ROM.
It is installed in the storage device 30d from a computer-readable storage medium such as a ROM or an MO. However, the present invention is not limited to this, and various embodiments can be adopted for installing a file, such as providing a communication interface or the like and downloading the file via the Internet or a telephone line.

[First Embodiment] Next, in the above-described configuration, by executing the strain sensor mounting position setting support program file F stored in the storage device 30d, the computer can be used to set the strain sensor mounting position. A first embodiment of the outline of the processing performed by the CPU 30a of the support device 30 will be described with reference to the flowchart in FIG. In the first embodiment, the optimal mounting position database DB in FIG. 15 may be deleted from the above-described configuration.

In FIG. 17, when the distortion sensor mounting position setting support program is executed, in step S110, the observation points 5-1 to 5-11 are transmitted from the measuring device 40 in step S110.
Are collected and stored in the RAM 30c, and then the process proceeds to step S120. By this processing, since strain change information indicating a change in the amount of strain generated according to a change in the loading and unloading of the vehicle at each of a plurality of observation points on the axle (load receiving member) 2 is collected, the strain change It corresponds to information collecting means.

In step S120, the RAM 30c
Each observation point 5 based on the distortion change information collected on
For each of -1 to 5-11, the relationship between the tire load and the amount of distortion in the advancing direction and the axial direction, the error of the amount of distortion generated in the axle 2 during loading and unloading, and the like are analyzed.
Proceed to.

In step S130, the mounting position (area) on the axle (load receiving member) 2 where the distortion sensor can accurately measure the distortion amount is determined based on the analysis result, and then the process proceeds to step S140. When there are a plurality of mounting positions where the amount of distortion can be accurately measured, the mounting positions are defined in the order in which the most accurate measurement is possible. Therefore, since the distortion sensor defines the mounting position on the axle (load receiving member) 2 where the distortion amount can be accurately measured by the processing of S130,
S130 corresponds to a defining unit.

In step S140, mounting position information indicating the defined mounting position is generated in the RAM 30c.
Thereafter, the process proceeds to step S150. In the present embodiment, since it is assumed that the mounting position is displayed on the display device 32, the mounting position can be superimposed and displayed on a schematic view of the axle (load receiving member) 2 in plan view. The mounting position information is generated in such a manner. Since the attachment position information indicating the attachment position is generated by this process, step S140 corresponds to the attachment position information generation unit.

In step S150, the RAM 30c
Is output to the display device I / F 30f, and the process ends in response to an end request input from the input device 31, or the like. Therefore, since the mounting position corresponding to the mounting position information is displayed on the axle 2 on the display device 32, the designer, the worker, etc. refer to the display on the display device 32 to mount the optimal strain sensor on the axle 2. The position can be easily found. Therefore, since the attachment position information is output by this processing, step S150 is performed.
Corresponds to an output unit.

As is apparent from the above description, in the first embodiment, the CPU 30a of the strain sensor mounting position setting support device 30 is provided with the strain change information collecting means, the defining means, and the mounting means described in the claims. It functions as position information generating means and output means.

Next, an example of the operation (operation) of the first embodiment in the above configuration will be described with reference to the drawings.

When the strain sensor mounting position setting support device 30 collects the strain change information (FIGS. 4 to 14) measured at the observation points 5-1 to 5-11 by the measuring device 40, the observation point 5-1 is obtained. Based on the strain change information collected for each of 5-11, the relationship between the tire load and the strain amount in the traveling direction and the axial direction, and the error of the strain amount generated in the axle 2 between loading and unloading are analyzed ( Steps S110 to S120).

In order to perform measurement with a small error, it is preferable that the amount of distortion generated on the axle 2 is equal between loading and unloading, and the amount of distortion in the traveling direction and the axial direction (see FIG. 3) is measured. In the strain sensor, it is preferable that the traveling direction, the axial direction, and the strain amount are measured as positive and negative in order to eliminate an error due to torsion or the like. It can be seen that ５−5-4 and the observation point 5-11 are positions where the amount of distortion can be accurately measured.

From the results of this analysis, the observation points 5-1 to 5
It is analyzed that the region including −4 and the region including the observation point 5-11 are suitable as the attachment position of the strain sensor. Then, the distortion change information corresponding to the observation points 5-1 to 5-4 and the observation points 5-11 is further analyzed, and the area including the observation points 5-1 to 5-4 is measured more accurately. If it is determined that it is possible, as shown in FIG.
The area including the observation points 5-1 to 5-4 is the optimal mounting position E1, and the area including the observation points 5-11 is ranked and defined as the next suitable mounting position E2.

The defined mounting positions E1 and E2 are superimposed on the schematic view of the axle 2 and the like in plan view so that the display device 3
2 is generated and output to the display device 32. As a result, the display device 32 shows
A screen as shown in FIG. 8 is displayed. And the display device 3
For example, with reference to the mounting position E1 and the mounting position E2 displayed in 2, the operator sets the mounting position of the strain sensor with respect to the axle 2 and performs the mounting work of the strain sensor. Design work is performed by setting the mounting position of the strain sensor.

According to the first embodiment described above,
Strain change information indicating a change in the amount of strain generated in accordance with a change in the loading and unloading of the vehicle is generated by the measuring device 40, and is added to a plurality of strain change information collected from each of the observation points 5-1 to 5-11. Since the mounting position of the strain sensor with respect to the axle (load receiving member) 2 is defined based on the above, it is possible to define the mounting position where the amount of distortion can be accurately measured. Since the mounting position information indicating the mounting position is output to the display device 32, it is necessary for an operator, a designer, and the like to find a conventional accurate mounting position by referring to the mounting position information. Therefore, it is possible to easily set the mounting position on the load receiving member that allows accurate measurement by the strain sensor. Therefore, it is possible to assist the setting of the mounting position on the axle (load receiving member) 2 by the worker, the designer, or the like, which can be accurately measured by the strain sensor.

Further, the mounting position of the strain sensor can be indicated on the schematic diagram corresponding to the axle (load receiving member) 2 by the mounting position information, so that an operator, a designer, etc. can easily grasp the mounting position. can do.

Further, even if a plurality of attachment positions are defined,
The order is assigned to each mounting position, so workers,
A designer or the like can easily set a mounting position suitable for the structure of the vehicle, the configuration of the load measuring device, and the like from a plurality of mounting positions.

[Second Embodiment] Next, in the above-described configuration, by executing the strain sensor mounting position setting support program file F stored in the storage device 30d, the distortion sensor mounting position setting which is a computer is performed. A second embodiment of the outline of the processing performed by the CPU 30a of the support device 30 will be described with reference to the flowchart in FIG.

In FIG. 19, when the strain sensor mounting position setting support program is executed, in step S210, the observation points 5-1 to 5-11 are transmitted from the measuring device 40 in step S210.
Are collected and stored in the RAM 30c, and then the process proceeds to step S220. By this processing, since strain change information indicating a change in the amount of strain generated according to a change in the loading and unloading of the vehicle at each of a plurality of observation points on the axle (load receiving member) 2 is collected, the strain change It corresponds to information collecting means.

In step S220, the RAM 30c
Each observation point 5 based on the distortion change information collected on
For each of -1 to 5-11, the relationship between the tire load and the strain amount in the advancing direction and the axial direction, the error of the strain amount generated in the axle 2 during loading and unloading, and the like are analyzed, and then, step S230
Proceed to.

In step S230, a temporary mounting position (region) on the axle (load receiving member) 2 at which the distortion sensor can accurately measure the amount of distortion is determined based on the analysis result.
Thereafter, the process proceeds to step S240. If there are multiple mounting positions where the amount of distortion can be measured accurately,
All the positions are determined as temporary attachment positions.

In step S240, mountable area information indicating an area where the strain sensor can be mounted on the axle (load receiving member) 2 is fetched from the input device 31 or the like, and then the process proceeds to step S250. The mountable area information is, for example, information indicating an area where the strain sensor can be easily mounted in consideration of the structure near the axle 2 of the vehicle. By this processing, the mountable area information indicating the area where the strain sensor can be mounted on the axle (load receiving member) 2 is fetched.
0 functions as an attachable area information fetching means.

In step S250, the input device 3
1. Based on data indicating the shape, structure, and the like of the axle 2 to be set, which is input from the measuring device 40, etc.
The optimum mounting position information corresponding to the set axle for the vehicle type indicating a shape, a structure, and the like similar to the axle 2 is extracted from the optimum position information database DB to the RAM 30c, and then the process proceeds to step S260. By this processing, the optimal mounting position information is stored in the storage device (optimal mounting position information storage means) 30d.
Is extracted from the optimal mounting position database DB stored in the step S250, and this step S250 functions as an extracting means.

In the second embodiment, if the similar optimum position information does not exist in the optimum position information database DB, the optimum position information is not extracted. Although the position information is extracted, various embodiments can be adopted according to the specifications of the apparatus.

In step S260, the value 1
Alternatively, the mounting position (region) on the axle (load receiving member) 2 where the strain sensor can accurately measure the amount of distortion based on the plurality of temporary mounting positions, mountable region information, and optimal mounting position information.
Is defined, and then the process proceeds to step S270. Since the distortion sensor defines the mounting position on the axle (load receiving member) 2 at which the distortion sensor can accurately measure the distortion amount, step S260 corresponds to the defining means.

At step S270, mounting position information indicating the defined mounting position is generated in the RAM 30c.
Thereafter, the process proceeds to step S280. In the present embodiment, since it is assumed that the mounting position is displayed on the display device 32, the mounting position can be superimposed and displayed on a schematic view of the axle (load receiving member) 2 in plan view. The mounting position information is generated in such a manner. Since the attachment position information indicating the attachment position is generated by this processing, step S270 corresponds to the attachment position information generating means.

In step S280, the RAM 30c
Is output to the display device I / F 30f, and the process ends in response to an end request input from the input device 31, or the like. Therefore, since the mounting position corresponding to the mounting position information is displayed on the axle 2 on the display device 32, the designer, the worker, etc. refer to the display on the display device 32 to mount the optimal strain sensor on the axle 2. The position can be easily found. Therefore, since the attachment position information is output by this processing, step S280 is performed.
Corresponds to an output unit.

As is clear from the above description, in the second embodiment, the CPU 30a of the strain sensor mounting position setting support device 30 is provided with the strain change information collecting means, the defining means, and the mounting means described in the claims. It functions as a position information generating unit, an output unit, an attachable area information acquiring unit, and an extracting unit.

Next, an example of the operation (operation) of the second embodiment in the above configuration will be described with reference to the drawings.

When the strain sensor mounting position setting support device 30 collects the strain change information (FIGS. 4 to 14) measured at the observation points 5-1 to 5-11 by the measuring device 40, the observation point 5-1 is set. Based on the strain change information collected for each of 5-11, the relationship between the tire load and the strain amount in the traveling direction and the axial direction, and the error of the strain amount generated in the axle 2 between loading and unloading are analyzed ( Steps S210 to 220).

In order to perform measurement with a small error, it is preferable that the amount of distortion generated in the axle 2 is equal between loading and unloading, and the amount of distortion in the traveling direction and the axial direction (see FIG. 3) is measured. In the strain sensor, it is preferable that the traveling direction, the axial direction, and the strain amount are measured as positive and negative in order to eliminate an error due to torsion or the like. It can be seen that ５−5-4 and the observation point 5-11 are positions where the amount of distortion can be accurately measured.

From the analysis results, observation points 5-1 to 5-4
The region including the observation points 5-11 and the region including the observation points 5-11 are analyzed as being suitable as the mounting positions of the strain sensors. As shown in FIG. 20, the regions including the observation points 5-1 to 5-4 are the temporary mounting positions. TE1 and an area including the observation point 5-11 is determined as the temporary attachment position TE2 (step S2).
230).

[0107] The mountable area information indicating the area where the strain sensor can be mounted on the axle 2 is input to the input device 31.
Then, the attachable position PE shown in FIG. 20 is recognized based on this information (step S240).
Then, a vehicle type a similar to the axle 2 to be set
The optimal mounting position information corresponding to the set axle (set load receiving member) for [see FIG. 16A] is extracted from the optimum position information database DB (step S250).

The determined two plural temporary mounting positions TE
1, the temporary mounting position TE1 based on the TE2, the mountable position PE, and the optimum mounting position BEa indicated by the optimum mounting position information.
The position at which the position and the mountable position PE overlap is defined as the mount position E (see FIG. 20) on the axle (load receiving member) 2 at which the strain sensor can accurately measure the amount of distortion (step S260).

Attachment position information for displaying the defined attachment position E on the display device 32 so as to be superimposed on the schematic view of the axle 2 and the like in plan view is generated and output to the display device 32.
As a result, a screen as shown in FIG. 20 is displayed on the display device 32. Then, referring to the mounting position E displayed on the display device 32, for example, the operator sets the mounting position of the strain sensor with respect to the axle 2 and performs the mounting work of the strain sensor. Design work is performed by setting the mounting position of the strain sensor.

According to the second embodiment described above,
Strain change information indicating a change in the amount of strain generated in accordance with a change in the loading and unloading of the vehicle is generated by the measuring device 40, and is added to a plurality of strain change information collected from each of the observation points 5-1 to 5-11. Since the mounting position of the strain sensor with respect to the axle (load receiving member) 2 is defined based on the above, it is possible to define the mounting position where the amount of distortion can be accurately measured. Since the mounting position information indicating the mounting position is output to the display device 32, it is necessary for an operator, a designer, and the like to find a conventional accurate mounting position by referring to the mounting position information. Therefore, it is possible to easily set the mounting position on the load receiving member that allows accurate measurement by the strain sensor. Therefore, it is possible to assist the setting of the mounting position on the axle (load receiving member) 2 by the worker, the designer, or the like, which can be accurately measured by the strain sensor.

The mountable position (region) PE where the strain sensor can be mounted on the load receiving member is indicated by the mountable region information, and the mount position E of the strain sensor is defined from the mountable position PE. Therefore, it is possible to prevent a position where the strain sensor is difficult to be mounted from being defined as a mounting position.

Further, the axle (load receiving member) to be set
Since the mounting position is defined with reference to the optimum mounting position BEa of the axle 2 for the vehicle a (already set) similar to that of the vehicle a, the results of the previously set optimum mounting position are reflected. Therefore, even an inexperienced worker or designer can easily set a mounting position suitable for the structure of the vehicle, the configuration of the load measuring device, and the like.

In the first and second embodiments described above, the case where distortion change information is taken in from all observation points 5-1 to 5-11 has been described. However, the present invention is not limited to this. Instead, for example, only the distortion change information of the observation point corresponding to the area indicated by the attachable area information may be collected.

Then, the time required for collection can be reduced, and the mounting position is determined based only on the strain change information corresponding to the area where the strain sensor can be mounted. It is possible to prevent a difficult position from being defined as a mounting position. Further, if the area where the strain sensor is to be mounted is designated by the mountable area information, a more appropriate mounting position can be defined. Therefore, it is possible to assist the setting of the mounting position on the load receiving member in which the strain sensor can be easily mounted and the accurate measurement can be performed by the strain sensor.

Further, the above-mentioned strain sensor mounting position setting support device 30 has a simulation function for simulating a change in the amount of distortion caused by a change in the loading and unloading of the vehicle at each of a plurality of observation points in the load receiving member. May be provided, and the distortion change information that is the simulation result may be taken in.

In the first and second embodiments described above, the case where the load receiving member is the axle 2 has been described. However, the present invention is not limited to this. A member such as the bed frame 1 that is distorted when receiving a load can be the load receiving member.

Further, in the above-described first and second embodiments, the case where the defined mounting position is superimposed on the schematic view of the axle 2 in plan view has been described, but the present invention is not limited to this. Instead, the mounting position may be superimposed on a video in which the load receiving member such as the axle 2 is displayed three-dimensionally (three-dimensionally).

[0099]

As described above, according to the strain sensor mounting position setting support method according to the first aspect of the present invention, the distortion change information includes the amount of distortion generated according to a change in the loading and unloading of the vehicle. Since the change position is indicated and the mounting position of the strain sensor with respect to the load receiving member is defined based on a plurality of strain change information collected from each observation point, it is possible to define the mounting position at which the strain amount can be accurately measured. Therefore, since the worker, the designer, etc. can determine the mounting position based on the distortion change information, there is no need to find the accurate mounting position, and the experience and skill of the worker, the designer, etc. are also related. Therefore, the mounting position on the load receiving member that allows accurate measurement by the strain sensor can be easily set.

As described above, according to the distortion sensor mounting position setting support method of the present invention, the distortion change information indicates the change in the amount of distortion generated according to the change in the loading and unloading of the vehicle. Based on the plurality of strain change information collected from each observation point and the mountable area information indicating the area where the strain sensor can be mounted on the load receiving member, the mounting position of the strain sensor with respect to the load receiving member is defined. Therefore, it is possible to define a mounting position where the strain sensor can be easily mounted and the strain amount can be measured accurately. Therefore, the worker, the designer, etc. can define the mounting position based on the distortion change information and the mountable area information, so that it is not necessary to find the mounting position with high accuracy. Since the experience and the skill level are not related, there is an effect that the strain sensor can be easily mounted and the setting of the accurate mounting position of the strain sensor on the load receiving member can be assisted.

As described above, according to the strain sensor mounting position setting support apparatus of the third aspect of the present invention, the strain change information indicating the change in the amount of strain generated according to the change in the loading and unloading of the vehicle. However, for example, when generated in accordance with actual measurement, simulation, etc., since the mounting position of the strain sensor with respect to the load receiving member is defined based on a plurality of strain change information collected from each observation point, the strain amount is accurately determined. Can be defined. Since the mounting position information indicating the mounting position is output, the worker, the designer, and the like need not refer to the mounting position information to find the accurate mounting position in the related art. It is possible to easily set the mounting position on the load receiving member where accurate measurement can be performed. Therefore, there is an effect that it is possible to assist a worker, a designer, or the like in setting a mounting position of the load receiving member that can be accurately measured by the strain sensor.

According to the invention set forth in claim 4, according to claim 3,
In addition to the effects of the invention described in the above, the mounting position of the strain sensor can be indicated on the schematic diagram corresponding to the load receiving member by the mounting position information, so that an operator, a designer, etc. can easily grasp the mounting position. can do. Therefore, there is an effect that it is possible to support quick setting of the mounting position in the load receiving member that can accurately measure by the strain sensor.

According to the invention described in claim 5, according to claim 3,
Or, in addition to the effect of the invention described in 4, even if a plurality of mounting positions are defined, the order is assigned to each mounting position, so that a worker, a designer, or the like can select a vehicle from among the plurality of mounting positions. A mounting position suitable for the structure, the configuration of the load measuring device, and the like can be easily set. Therefore, it is possible to provide an effect that it is possible to support appropriate setting of the mounting position in the load receiving member that can accurately measure by the strain sensor.

According to the invention described in claim 6, according to claim 3,
In addition to the effects of the invention described in any one of (1) to (5), an area where the strain sensor can be mounted on the load receiving member is indicated by the mountable area information, and the mounting position of the strain sensor is defined from this area. Therefore, it is possible to prevent a position where the strain sensor is difficult to be mounted from being defined as a mounting position. Further, if the area where the strain sensor is to be mounted is designated by the mountable area information, a more appropriate mounting position can be defined. Therefore, there is an effect that the setting of the mounting position in the load receiving member in which the strain sensor can be easily mounted and the accurate measurement can be performed by the strain sensor can be supported.

According to the invention of claim 7, according to claim 3,
In addition to the effects of the invention described in any one of (1) to (5), only the strain change information of the observation point corresponding to the area where the strain sensor can be mounted is collected, and the mounting position is defined based on the strain change information. Therefore, it is possible to prevent a position where the strain sensor is difficult to be mounted from being defined as a mounting position. In addition, if a region where the strain sensor is to be mounted is designated by the mountable region information, a more appropriate mounting position can be defined. Therefore, there is an effect that the setting of the mounting position in the load receiving member in which the strain sensor can be easily mounted and the accurate measurement can be performed by the strain sensor can be supported.

According to the eighth aspect of the present invention, the third aspect is provided.
In addition to the effects of the invention described in any one of the above-described items 6, since the mounting position is defined by referring to the optimum mounting position of the set load receiving member similar to the load receiving member to be set, it is conventionally set. Since the results of the optimal mounting position are reflected, even inexperienced workers and designers can easily set the mounting position suitable for the structure of the vehicle, the configuration of the load measuring device, etc. it can. Therefore, it is possible to assist the optimum setting of the mounting position in the load receiving member that can be accurately measured by the strain sensor.

As described above, according to the distortion sensor mounting position setting program of the ninth aspect of the present invention,
When distortion change information indicating a change in the amount of distortion generated according to a change in loading and unloading of the vehicle is generated according to, for example, actual measurement, simulation, or the like, a plurality of distortion change information collected from each observation point is used. Since the mounting position of the strain sensor with respect to the load receiving member is defined based on the above, it is possible to define the mounting position where the amount of strain can be accurately measured. Since the mounting position information indicating the mounting position is output, the worker, the designer, and the like need not refer to the mounting position information to find the accurate mounting position in the related art. It is possible to easily set the mounting position on the load receiving member where accurate measurement can be performed. Therefore, there is an effect that the setting of the mounting position of the load receiving member, which can be accurately measured by the strain sensor, by the operator, the designer, or the like can be assisted by the computer.

According to the tenth aspect, in addition to the effect of the ninth aspect, the mounting position of the strain sensor can be indicated on a schematic diagram corresponding to the load receiving member by the mounting position information. Therefore, a worker, a designer, and the like can easily grasp the mounting position. Therefore, there is an effect that the computer can assist the prompt setting of the mounting position in the load receiving member that can be accurately measured by the strain sensor.

According to the eleventh aspect, in addition to the effects of the ninth or tenth aspects, even if a plurality of mounting positions are defined, the order is assigned to each mounting position. An operator, a designer, or the like can easily set an attachment position suitable for the structure of the vehicle, the configuration of the load measuring device, and the like from among the plurality of attachment positions. Therefore, there is an effect that an appropriate setting of the mounting position in the load receiving member that can be accurately measured by the strain sensor can be assisted by the computer.

According to the twelfth aspect of the present invention, in addition to the effects of the ninth to eleventh aspects, an area where the strain sensor can be mounted on the load receiving member is indicated by the mountable area information. Since the mounting position of the strain sensor is defined from this area, it is possible to prevent the position where the mounting of the strain sensor is difficult from being defined as the mounting position. Further, if the area where the strain sensor is to be mounted is designated by the mountable area information, a more appropriate mounting position can be defined. Therefore, there is an effect that the computer can assist the setting of the mounting position in the load receiving member in which the strain sensor can be easily mounted and the accurate measurement can be performed by the strain sensor.

According to the thirteenth aspect, in addition to the effects of the ninth to eleventh aspects, only the strain change information of the observation point corresponding to the area where the strain sensor can be mounted can be obtained. Since the mounting position is determined based on the collected and changed strain information, it is possible to prevent a position where the strain sensor is difficult to be mounted from being defined as the mounting position. Further, if the area where the strain sensor is to be mounted is designated by the mountable area information, a more appropriate mounting position can be defined. Therefore, there is an effect that the computer can assist the setting of the mounting position in the load receiving member in which the strain sensor can be easily mounted and the accurate measurement can be performed by the strain sensor.

According to the fourteenth aspect, in addition to the effects of the ninth to thirteenth aspects, an optimum mounting position of the set load receiving member similar to the load receiving member to be set is provided. The mounting position is defined with reference to the above, so the results of the optimal mounting position set in the past will be reflected, so even inexperienced workers and designers can use the structure and load of the vehicle. An attachment position suitable for the configuration of the measuring device and the like can be easily set. Therefore, there is an effect that the computer can assist the optimum setting of the mounting position in the load receiving member that can be accurately measured by the strain sensor.

[Brief description of the drawings]

FIG. 1 is a diagram showing a basic configuration of a strain sensor mounting position setting support device of the present invention.

FIG. 2 is a configuration diagram showing a schematic configuration of a strain sensor mounting position setting support device according to the present invention.

FIG. 3 is a diagram for explaining a measurement example of the measuring device of FIG. 2;

FIG. 4 is a graph showing a measurement result at an observation point 5-1 in FIG. 3;

FIG. 5 is a graph showing a measurement result at an observation point 5-2 in FIG. 3;

FIG. 6 is a graph showing a measurement result at an observation point 5-3 in FIG. 3;

FIG. 7 is a graph showing measurement results at observation points 5-4 in FIG. 3;

8 is a graph showing measurement results at observation points 5-5 in FIG.

FIG. 9 is a graph showing measurement results at observation points 5-6 in FIG.

FIG. 10 is a graph showing measurement results at observation points 5-7 in FIG.

FIG. 11 is a graph showing measurement results at observation points 5-8 in FIG.

FIG. 12 is a graph showing measurement results at observation points 5-9 in FIG. 3;

FIG. 13 is a graph showing measurement results at observation points 5-10 in FIG.

FIG. 14 is a graph showing measurement results at observation points 5-11 in FIG.

FIG. 15 is a diagram showing a part of a file stored in the storage device of FIG. 2;

FIG. 16 is a diagram showing an example of an optimum mounting position database of FIG.

FIG. 17 is a flowchart illustrating an example of a processing outline in the first embodiment performed by the CPU in FIG. 2;

FIG. 18 is a diagram for explaining the operation of the first embodiment.

FIG. 19 is a flowchart illustrating an example of a processing outline in a second embodiment performed by the CPU in FIG. 2;

FIG. 20 is a diagram for explaining the operation of the second embodiment.

FIG. 21 is an exploded perspective view showing an assembled portion of a conventional vehicle carrier frame, axle, leaf spring, and the like.

[Explanation of symbols]

 30a1 Distortion change information collecting means (CPU) 30a2 Defining means (CPU) 30a3 Mounting position information generating means (CPU) 30a4 Output means (CPU) 30a5 Mounting area information capturing means (CPU) 30a6 Extracting means (CPU) 30d1 Optimal mounting Position information storage means (storage device)

Claims (14)

[Claims] 1. A strain sensor mounting position setting support method for supporting setting of a mounting position of a strain sensor for measuring a strain generated in a load receiving member receiving a load applied to a vehicle with respect to the load receiving member, the load receiving device comprising: A process of collecting strain change information indicating a change in the strain amount generated according to a change in loading and unloading of the vehicle at each of a plurality of observation points on the member; and the strain sensor based on the collected strain change information. Determining a mounting position at which the amount of distortion can be accurately measured. 2. A strain sensor mounting position setting support method for supporting setting of a mounting position of a strain sensor for measuring a strain generated in a load receiving member receiving a load applied to a vehicle with respect to the load receiving member, the load receiving device comprising: A process of collecting strain change information indicating a change in the strain amount generated according to a change in the loading and unloading of the vehicle for each of a plurality of observation points in the member; and in the collected strain change information and the load receiving member. Defining a mounting position at which the strain sensor can accurately measure the strain amount based on mountable area information indicating an area where the strain sensor can be mounted. Position setting support method. 3. A strain sensor mounting position setting support device for supporting setting of a mounting position of a strain sensor for measuring a distortion amount generated in a load receiving member receiving a load applied to a vehicle with respect to the load receiving member, A strain change information collection unit that collects strain change information indicating a change in the strain amount generated according to a change in loading and unloading of the vehicle for each of a plurality of observation points on the member; Based on the obtained strain change information, the strain sensor defines the mounting position in the load receiving member that can accurately measure the strain amount, and the mounting position information indicating the mounting position defined by the defining means, Mounting position information generating means for generating; and output means for outputting the mounting position information generated by the mounting position information generating means. Strain sensor mounting position setting support device that. 4. The mounting position information generating means according to claim 3, wherein the mounting position information generating means generates the mounting position information so as to overlap the mounting position on a schematic view of the load receiving member in plan view. A support device for setting the position of the strain sensor. 5. The apparatus according to claim 3, wherein when there are a plurality of the mounting positions where the amount of distortion can be accurately measured, the defining unit performs the definition of the plurality of the mounting positions by assigning a ranking. The strain sensor mounting position setting support device according to the above. 6. The apparatus according to claim 6, further comprising: mountable area information capturing means for capturing mountable area information indicating an area in the load receiving member where the strain sensor can be mounted, wherein the defining means further comprises: The strain sensor mounting position setting support device according to claim 3, wherein the definition is performed with reference to the mountable region information captured by the loading unit. 7. The apparatus according to claim 7, further comprising: mountable area information capturing means for capturing mountable area information indicating an area where the strain sensor can be mounted on the load receiving member. The strain sensor according to any one of claims 3 to 5, wherein the strain change information of the observation point corresponding to the region indicated by the captureable region information captured by the region information capturing unit is collected. Mounting position setting support device. 8. An optimum mounting position information storage means for storing, for each of the set load receiving members, optimum mounting position information indicating an optimum mounting position set by the strain sensor; and the load receiver as a target for setting the mounting position. Extracting means for extracting the optimum mounting position information corresponding to the set load receiving member similar to the member from the optimum mounting position information storage means, wherein the defining means further comprises: The strain sensor mounting position setting support device according to any one of claims 3 to 7, wherein the definition is performed with reference to optimal mounting position information. 9. A strain sensor mounting position for causing a computer to function as a means for supporting the setting of the mounting position of the strain sensor for measuring the amount of strain generated in the load receiving member receiving the load applied to the vehicle with respect to the load receiving member. A setting support program, comprising: strain change information collecting means for collecting strain change information indicating a change in the strain amount generated according to a change in loading and unloading of the vehicle at each of a plurality of observation points in the load receiving member. Based on the strain change information collected by the strain change information collecting means, a defining means for defining an attachment position in the load receiving member at which the strain sensor can accurately measure the strain amount, the defining means defining Mounting position information generating means for generating mounting position information indicating a mounting position, the mounting position generated by the mounting position information generating means; Strain sensor installation position setting support program for causing a computer output means for outputting a broadcast, as. 10. The mounting position information generating means, further comprising:
10. The strain sensor mounting position setting support program according to claim 9, wherein the computer functions as means for generating the mounting position information so that the mounting position is superimposed on a schematic view of the load receiving member in plan view. 11. The computer according to claim 11, wherein said definition means further includes a computer functioning as a means for assigning a ranking and defining said plurality of mounting positions when there are a plurality of said observation points capable of accurately measuring said distortion amount. A strain sensor mounting position setting support program according to claim 9. 12. A mountable area information capturing unit that captures mountable area information indicating an area in the load receiving member where the strain sensor can be mounted, further comprising: the defining unit; Means for performing the definition by referring to the acquired mountable area information, and causing the computer to function as:
The strain sensor mounting position setting support program according to any one of the above. 13. The mountable area information capturing means for capturing mountable area information indicating an area where the strain sensor can be mounted on the load receiving member, further comprising: the strain change information collecting means. And means for collecting the distortion change information of the observation point corresponding to the area indicated by the captureable area information captured by the capture means.
The strain sensor mounting position setting support program according to any one of the above. 14. The load receiver to which the mounting position is to be set, from an optimum mounting position information storage means for storing optimum mounting position information indicating the optimum mounting position set by the strain sensor for each of the set load receiving members. Extracting means for extracting the optimum mounting position information corresponding to the set load receiving member similar to the member from the optimum mounting position information storage means, further comprising: the defining means, further comprising the optimum mounting position information extracted by the extracting means. Means for performing the definition with reference to: causing a computer to function as:
The strain sensor mounting position setting support program according to any one of the above.