JP2009053041A - Instrumentation managing method for link-type displacement gauge - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an instrumentation managing method for a link-type displacement gauge, with which troubles or failures of one measuring instrument is sensed rapidly and accurately. <P>SOLUTION: A plurality of link type displacement gauges 19 are arranged so as to be connected with another at an object to be measured or its close position. The link-type displacement gauge 19 includes a tube body 21 displaceable in response to a changed state of the object to be measured; a displacement-detecting member 23 arranged in the tube body 21 so as to be movable along with the tube body 21; and a measuring means 34, capable of measuring a displacement of the displacement detecting member 23 and outputting the measurement data to an arithmetic unit 45. The instrumentation managing method is used for the link-type displacement gauge in order to measure the changed state of the object to be measured, by using the plurality of link-type displacement gauges 19. When an apparent angle output is generated by one link-type displacement gauge 19, the trouble or the failure of the one link-type displacement gauge 19 is sensed, based on whether apparent angle output is generated by the link-type displacement gauges 19 that are arranged on the both sides of the one link-type displacement gauge 19. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention is suitable, for example, for an orbital deformation monitoring system, which detects a failure or failure of a single measuring instrument quickly and accurately, prevents confusion due to its apparent measurement data, and detects a failure or failure. The interpolated value of the measurement data of the measured instrument can be obtained quickly and accurately, and it is possible to deal with the case where the actual measurement object is deformed until the instrument is restored. The present invention relates to a measurement management method for a link-type displacement meter that can realize highly reliable measurement management and ensure the safety of train operation.

A link-type displacement meter is known as a device capable of measuring the deformation of the ground in an underpass construction or a proximity construction under a railway line over a long span.
The applicant has proposed various types of the link type displacement meter.
For example, as one form of a link type displacement meter, a support frame, a pair of sensor frames connected to both ends of the support frame so as to be able to bend each other in an orthogonal direction, and the frame can be moved inside the sensor frame There is a displacement detection member that is housed, the displacement meter is housed in a tubular outer frame, and the outer frame is placed on the ground to be measured (for example, see Patent Document 1).

  Then, a substantially U-shaped leaf spring and a bent piece are attached to the peripheral surface of the support frame, a roller is attached to the end portion thereof, and the roller is disposed so as to be engageable with the inner surface of the outer frame, The sensor frame can be bent using the roller of the bent piece as a fulcrum, the bending displacement of the frame is detected by a displacement detection member, and the horizontal and vertical bending displacements are input to a computer to deform the ground. I was monitoring in real time.

  As another form of the link-type displacement meter, the opposed end portions of the first and second cylinders are connected so as to be pivotable in the vertical direction or the horizontal direction via a piece, and the piece is horizontally and vertically alone. A rod-shaped spring material that can be displaced in two directions is inserted, its base end is supported in the first cylinder, and the other end is slidably supported in the second cylinder. A small-diameter part is provided in the part, a strain gauge is attached to the small-diameter part, the displacement in the vertical direction or horizontal direction of the small-diameter part is detected by the strain gauge, and the displacement is electrically converted and input to a computer to be measured. There is an apparatus that monitors the deformation of (see, for example, Patent Document 2).

When such a link-type displacement meter is installed on a track of a railway vehicle, for example, if the track is deformed due to construction or the like, it is necessary to decelerate or stop the train immediately to ensure the safety of the train operation.
However, the link-type displacement meter is a precise measuring instrument, and the track is directly subjected to train vibrations. Therefore, problems and failures are unavoidable and the timing cannot be predicted.

  If a link type displacement meter becomes defective, unlike the output in the case of a trajectory change, apparent measurement data that is not significant is output. There was a problem that it was mistaken that the situation occurred and an abnormal alarm was output, and the train was slowed down or stopped immediately, which disrupted the operation of the train.

  For this reason, it is possible to detect a malfunction or failure of the measuring instrument, prevent a slow train or stop processing of the train based on the false alarm due to the malfunction or malfunction, and to recover the measuring instrument even when the malfunction occurs. In addition, there has been a demand for the development of a track deformation monitoring system capable of coping with the occurrence of actual deformation and ensuring the safety of train operation and capable of performing accurate measurement and control.

JP 2000-155020 A Japanese Patent No. 3612587

  The present invention solves such a problem, and is suitable for, for example, an orbital deformation monitoring system. It detects a malfunction or failure of one measuring instrument quickly and accurately, and prevents confusion due to its apparent measurement data. At the same time, even when the measurement data of the measuring instrument that detects the failure or failure can be obtained quickly and accurately, and the actual measurement object is deformed until the measuring instrument is restored, An object of the present invention is to provide a link type displacement meter measurement management method which can cope with the problem and realize highly reliable measurement management and ensure the safety of train operation.

  According to the first aspect of the present invention, a plurality of link-type displacement meters are connected and installed at the measurement target or in the vicinity thereof, and the link-type displacement meter is displaceable in response to the deformation of the measurement target. And a displacement detection member disposed inside the cylinder so as to be movable together with the cylinder, and a measuring means capable of measuring the displacement of the displacement detection member and outputting the measurement data to an arithmetic unit. In the measurement management method of the link displacement meter that measures the deformation of the measurement target using the plurality of link displacement meters, when the apparent angular output is generated in the one link displacement meter, the link displacement Based on the presence or absence of the apparent angular output of the link type displacement meter placed on both sides of the meter, the failure or failure of the link type displacement meter is detected by detecting the failure or failure of the one link type displacement meter. Is detected quickly and accurately, and the presence of the link-type displacement meter To prevent confusion by data, measurement management and measuring de - - Measurement de apparent not have to obtain the reliability of the data.

According to a second aspect of the present invention, when there is no apparent angle output of the link type displacement gauges arranged on both sides, a fault or failure of the one link type displacement gauge is detected, and the link type displacement gauge is detected. It is intended to detect problems and failures of the product quickly and accurately.
According to a third aspect of the present invention, in the link type displacement meter, one link type displacement meter is provided with a single or a plurality of displacement detection members, so that highly reliable measurement management can be executed for various link type displacement meters. ing.

  According to a fourth aspect of the present invention, a plurality of link-type displacement meters are connected and installed at a measurement target or a proximity position thereof, and the link-type displacement meter is displaceable in response to deformation of the measurement target. And a displacement detection member disposed inside the cylinder so as to be movable together with the cylinder, and a measuring means capable of measuring the displacement of the displacement detection member and outputting the measurement data to an arithmetic device, In the measurement management method of a link displacement meter that measures the deformation of a measurement target by a plurality of link displacement meters, when an apparent angle output is generated in the one link displacement meter, the link displacement meter Based on the presence or absence of the occurrence of an apparent angle output of the link type displacement meter arranged on both sides, the link type displacement meter that detects the failure or the failure of the one link type displacement meter and detects the failure or the failure Interpolation value of bending or turning angle, etc. By calculating based on the measurement data of the bending or turning angle of the link type displacement meter, it is possible to quickly and accurately detect the malfunction or failure of the link type displacement meter, and the non-significant appearance of the link type displacement meter. Until the link type displacement meter is restored, the measurement data reliability can be obtained and the measured data reliability can be obtained. During this period, it is possible to cope with any actual occurrence of deformation in the measurement target and perform highly reliable measurement management. For example, it is suitable for a track deformation monitoring system and can ensure the safety of train operation. I have to.

The invention according to claim 5 is the bending or turning angle of a link type displacement meter other than the link type displacement meter, wherein an interpolated value of the bending type or turning angle of the link type displacement meter that has detected the malfunction or failure. As a result, the interpolated value of the measurement data of the link type displacement meter in which a defect or failure is detected can be obtained quickly and accurately.
According to a sixth aspect of the invention, the calculation value is output to the calculation device as an interpolated value of a bending or rotation angle of a link type displacement meter in which a malfunction or failure is detected, so that highly reliable measurement management is possible. I can do it.
According to a seventh aspect of the present invention, the link type displacement meter is provided with a single or a plurality of displacement detection members in one link type displacement meter, so that highly reliable measurement management can be performed for various link type displacement meters. Make it executable.

According to the first aspect of the present invention, when an apparent angle output is generated in one link type displacement meter, an apparent angle output of the link type displacement meter arranged adjacent to both sides of the link type displacement meter is generated. Based on the presence / absence, the fault or failure of the one link type displacement meter is detected, so that the fault or failure of the link type displacement meter can be detected quickly and accurately, and the non-significant apparent measurement of the link type displacement meter. There is an effect of preventing confusion caused by data and obtaining reliability of measurement data and measurement management.
Since the invention according to claim 2 detects a failure or failure of the one link type displacement meter when there is no apparent angle output of the link type displacement meter disposed on both sides, the failure of the link type displacement meter It is also possible to detect a failure quickly and accurately.
According to the invention of claim 3, since the link type displacement meter is provided with a single or a plurality of displacement detection members in one link type displacement meter, highly reliable measurement management can be executed for various link type displacement meters. I have to.

  According to the invention of claim 4, when an apparent angle output is generated in one link type displacement meter, the presence or absence of the apparent angle output of the link type displacement meter arranged on both sides of the link type displacement meter is determined. In addition, a failure or failure of the one link type displacement meter is detected, and the bending or rotation angle of the link type displacement meter that has detected the failure or failure is used as the bending value of another link type displacement meter. Since it calculates based on the measurement data of the rotation angle, it detects the malfunction or failure of the link type displacement meter quickly and accurately, prevents confusion due to the insignificant apparent measurement data of the link type displacement meter, In addition to obtaining reliability of measurement data, it is possible to quickly obtain an interpolated value of measurement data of a link type displacement meter that has detected a defect or failure, and to actually measure it until the link type displacement meter recovers. Deformed And also can cope when, because perform a reliable measurement management, for example suitable track Deformation monitoring system, there is an effect capable of ensuring the safety of the train operation.

The invention according to claim 5 is the bending or turning angle of a link type displacement meter other than the link type displacement meter, wherein an interpolated value of the bending type or turning angle of the link type displacement meter in which the malfunction or failure is detected. Therefore, there is an effect that the interpolated value of the measurement data of the link type displacement meter in which a defect or failure is detected can be obtained quickly and accurately.
The invention according to claim 6 outputs the calculation value to the calculation device as an interpolated value of a bending or rotation angle of a link type displacement meter in which a malfunction or failure is detected, so that highly reliable measurement management is performed. Can do.
In the invention according to claim 7, since the link displacement meter includes a single or a plurality of displacement detection members in one link displacement meter, highly reliable measurement management is executed for various link displacement meters. be able to.

  1 to 10, reference numeral 1 denotes a roadbed or ground to be measured, and a sleeper 2 is laid on the roadbed 1. In the embodiment shown in FIG. A rail 4 is laid on the sleeper 2 via a fixing plate 3.

  A pair of upper and lower U-shaped fixing brackets 5 and 6 are attached to one end of the sleeper 2 via U bolts 7 and nuts 8, and a link case mounting bracket 9 is projected from the upper fixing bracket 6. ing. In the figure, reference numerals 10 and 11 denote anti-vibration rubbers interposed between the upper and lower surfaces of the sleepers 2 and the fixing brackets 5 and 6.

A rectangular tubular link case 13 is accommodated in the link case fitting 9 via a vibration-proof rubber 12.
A substantially U-shaped fixing bracket 14 is stretched over the link case 13, and fixing bolts 15 are inserted into both ends thereof, and nuts 17 are screwed into the link case 13 via vibration-proof rubbers 16. Is fixed.

  The link case 13 is formed in a rectangular tube shape, which is composed of two case pieces 13a and 13b obtained by bending a stainless steel plate into a substantially L shape, and these ends are fastened with bolts 18 and assembled. A link type displacement meter 19 is accommodated in the center of the inside 13.

  The link-type displacement meter 19 includes a first cylinder 20, a second cylinder 21 disposed coaxially adjacent to the cylinder 20, and the first and second cylinders 20, 21. And a displacement detecting member 23 which is inserted into the joint 22 and is supported so that the other end is slidable. The first and second components are connected to each other. The same shaped rectangular tubular link pipes 24 and 25 are connected to the other ends of the cylinders 20 and 21.

Among these, the 1st cylinder 20 is comprised by the rectangular tube shape, and a pair of protrusion piece 20a is formed in the one end, and the 2nd cylinder 21 is the same cylinder as the 1st cylinder 20, and is long in a cross section. A pair of projecting pieces 21a are formed to face each other at one end thereof, and pin holes (not shown) are formed in these projecting pieces 20a and 21a.
And these protrusions 20a and 21a are mutually arrange | positioned in the orthogonal direction, it meshes | engages, and the said coupling 22 is arrange | positioned between these protrusions 20a and 21a.

  Through holes (not shown) into which the displacement detecting member 23 can be inserted are formed in the joint 22, and pin holes (not shown) communicating with the through holes are formed at equiangular positions around the through holes. Pins 27 to 30 are inserted from the pin holes of the projecting pieces, and the joint 22 is supported horizontally and vertically so as to be rotatable around these pins 27 to 30.

The displacement detection member 23 is formed of a flexible member, and the length thereof is formed to be approximately the same as that of the second cylinder 21, and the base end portion of the displacement detection member 23 penetrates the through hole to form the first cylinder. It protrudes to the body 20 side, and engages and supports the end of a support member 31 such as a screw on the peripheral surface of the protrusion.
The other end of the displacement detection member 23 is disposed on the end side of the second cylinder 21, and the other end of the detection member 23 is attached to a tubular guide holder 32.
The guide holder 32 is disposed at the center on the end side of the second cylindrical body 21 and engages and supports the ends of a plurality of support members 33 such as screws on the outer peripheral surface thereof.

  A reduced diameter portion 23a is provided on the joint 22 side of the displacement detecting member 23, and a plurality of strain gauges 34 are installed on the peripheral surface of the reduced diameter portion 23a, and a horizontal or vertical displacement of the reduced diameter portion 23a is detected as a strain amount. Then, this is electrically converted, and the detection signal can be input to the personal computer 45 which is an arithmetic unit installed in the orbital deformation monitoring room. In the figure, reference numeral 35 denotes a tube cover such as a rubber tube attached to the peripheral surface of the reduced diameter portion 23a.

On the condition that the measurement data is input, the personal computer 45 determines the deformation of the ground 1 or the sleeper 2 and its deformed position, and the deformed abnormality based on stored information stored in advance and an arithmetic expression described later. Presence / absence, appropriateness of operating state of each link type displacement meter 19, interpolation value of defective link type displacement meter 19, etc. are calculated, and the calculation result is displayed on a monitor (not shown) and can be output to a printer or alarm device I have to.
The calculation result can be transmitted through a modem (not shown) to transmit alarm information to a person concerned and check data from a remote location.

  The other end portions of the first and second cylinders 20 and 21 are slightly reduced in diameter, and one ends of link pipes 24 and 25 are fitted into the reduced diameter portions, and these are connected via screws.

  Plate springs 38 and 39 having a substantially square shape are attached to two adjacent sides of the link pipes 24 and 25, and rollers 40 are rotatably supported at both ends thereof. The rollers 40 are engaged with the inner surface of the link case 13. Are arranged as possible.

  Further, brackets 41 and 42 are attached to the other two sides of the link pipes 24 and 25, and the brackets 41 and 42 are arranged at the center position between the rollers 40 and 40 as shown in FIG. Rollers 43 are rotatably supported on both sides of 41 and 42, and these rollers 43 are disposed so as to be engageable with the inner surface of the link case 13.

  Then, with the roller 43 pivotally supported by the bracket 41 as a fulcrum, the second cylinder 21 can be bent or rotated in the horizontal direction around the pins 27 and 28, and pivotally supported by the other bracket 42. The second cylinder 21 is bent or rotated in the vertical direction around the pins 29 and 30 with the roller 43 as a fulcrum.

  In addition, 13c and 13d in the figure are link pieces having a substantially L-shaped cross section constituting the link case 13 arranged outside the link pipes 21 and 25, and an L-shaped metal fitting 44 is arranged on the inner surface of the joining end portion thereof. A pair of bolts 18 are screwed into this connection.

When assembling the link type displacement meter 19 configured in this way, first and second cylinders 20 and 21 are first connected.
In this case, the pair of protruding pieces 20a and 21a at the ends of the first and second cylindrical bodies 20 and 21 are engaged with each other at right angles to each other, and the pins 27 to 30 are inserted into the pin holes.

  At that time, the joint 22 is disposed in advance between the projecting pieces 20a and 21a, the pins 27 to 30 are engaged with the pin holes, and the joint 22 is supported so as to be swingable. The cylindrical bodies 20 and 21 are connected to each other so that they can be bent or rotated around the pins 27 to 30.

  Then, the displacement detection member 23 is inserted into the through hole of the joint 22, penetrates through the hole, and protrudes to the outside of the second cylinder 21 by a predetermined length. In the displacement detection member 23, a plurality of strain gauges 34 are installed in advance on the reduced diameter portion 23a, and a tube cover 35 is mounted on the outside thereof.

  Thereafter, a plurality of support members 31 are inserted from the peripheral surface of the first cylindrical body 20, and the shaft end portions thereof are engaged with the projecting portions of the displacement detection member 23 to hold them, and the displacement detection members The other end of 23 is inserted into a guide holder 32 attached in advance on the central axis of the other end of the second cylindrical body 21, and this is slidably supported.

Next, link pipes 24 and 25 are appropriately connected to the other ends of the first and second cylinders 20 and 21, and leaf springs 38 and 39 are attached to two adjacent sides of the outer periphery of the link pipes 24 and 25. The roller 40 is rotatably attached to both ends thereof.
In addition, brackets 41 and 42 are attached to substantially the center positions in the length direction of the leaf springs 38 and 39 on the other two adjacent sides on the outer periphery of the link pipes 24 and 25, and each pair of rollers is attached to the brackets 41 and 42. 43 is attached.

When the link type displacement meter 19 assembled in this way is installed, it is installed on a straight line along the rail 4 between the spaces in an installation space including a position outside the construction influence range.
At that time, the link type displacement meter 19 installed outside the construction influence range is set as a fixed point for measurement, and therefore the link type displacement meter 19 installed at the fixed point is not deformed by the construction.

Next, when the link type displacement meter 19 is installed, a pair of upper and lower fixing brackets 5 and 6 are attached to the same side ends of the plurality of sleepers 2 between the installation spaces, and the link case mounting bracket 9 The link case 13 is stretched over, and the link case 13 is fixed to the fixing bolt 12 by screwing the nut 17 through the fixing metal 14.
The link-type displacement meter 19 is inserted into the link case 13 thus fixed, and is placed at a predetermined position.

  At this time, the roller 40 provided on the plate springs 38 and 39 and the roller 43 provided on the brackets 41 and 42 run on the inner surface of the link case 13 to facilitate smooth insertion. The link type displacement meter 19 is biased to a substantially central position in the link case 13 by elasticity. The signal cables connected to the link type displacement meter 19 are arranged at the four corners in the link case 13.

  After inserting one link type displacement meter 19 including the link pipe 24 and / or 25 into the link case 6, the link pipe 24 and / or 25 at one end thereof, or the first and second cylinders 20, 21 is connected to one end of the first and second cylinders 20 and 21 or the link pipes 24 and / or 25 of the next link type displacement meter 19, and the next link type displacement meter 19 is added, and this is described above. If it is inserted into the link case 13 in the same manner as described above, a series of installation work is completed.

  In the link type displacement meter 19 installed in this way, when the ground 1 or the roadbed in the installation space is deformed in the vertical direction, the horizontal direction, or the combined direction thereof, the sleepers 2 are moved together, and on the sleepers 2 The link case 13 moves with this.

  Among these, when the link case 13 is displaced in the vertical direction, the second cylinder 21 of each link type displacement meter 19 is supported by the roller 43 of the bracket 42 disposed on the horizontal wall in the link case 13. Is bent in the vertical direction around the pins 29 and 30 against the elasticity of the leaf spring 38 with respect to the first cylindrical body 20 on the fixed side, and the displacement detection member 23 moves in conjunction with this to form stress or strain. Is done.

  When the link case 13 is displaced in the horizontal direction, the second cylinder 21 of each link type displacement meter 19 is fixed on the fixed side with the roller 43 of the bracket 41 disposed on the vertical wall in the link case 13 as a fulcrum. One cylindrical body 20 is bent in the horizontal direction around the pins 27 and 28 against the elasticity of the leaf spring 38, and the displacement detection member 23 moves together with this to form stress or strain.

  The stress or strain is formed corresponding to the deformation amount of the ground 1 or the displacement of the second cylindrical body 21 or the displacement detecting member 23, and the stress of the displacement detecting member 23 is concentrated on the reduced diameter portion 23a. The quantity is detected by the strain gauge 34 and converted into an electric quantity, and the detection signal is input to the personal computer 45.

  On the condition of the signal input, the personal computer 45 determines the deformation of the ground 1 or the sleeper 2 and its deformation position, the presence / absence of the deformation abnormality, each link type displacement meter on the basis of previously stored information and arithmetic expressions. 19 calculates the appropriateness of the operating state of 19 and the interpolated value of the defective link type displacement meter 19 and displays the calculation result on a monitor (not shown) so that it can be output to a printer or alarm device.

Each link type displacement meter 19 bends in the vertical or horizontal direction corresponding to the deformation amount of the ground 1 or the sleeper 2, and the amount of bending or the bending angle corresponds to the displacement of the displacement detecting member 23 or the amount of distortion. .
Therefore, a link bending angle corresponding to the deformation amount of the ground 1 or the sleepers 2 is input from the link type displacement meter 19 to the personal computer 45 in the track deformation monitoring room.

  Since the displacement measurement by the link type displacement meter 19 is usually performed by connecting several tens of link type displacement meters 19 in the link case 13, even when the occurrence of deformation is in a very narrow range, One link type displacement meter 19 is not deformed independently, and several link type displacement meters 19 are deformed in relation to each other.

For example, when measuring displacement by connecting five link type displacement gauges A, B, C, D, E without any defects, measurement is performed with the end of the outermost link type displacement gauges A, E as a fixed point. When there is no actual deformation in the target track or roadbed 1, each link type displacement meter A to E is not displaced at all, and therefore each link type displacement meter A to E does not output a bending angle, that is, each link. Since the bending angles of the type displacement meters A to E are zero, each link type displacement meter A to E maintains a linear state.
The schematic diagram of the displacement pattern of the link type displacement meters A to E in this case is as shown in FIG.

  Under such circumstances, when a deformation occurs near the link type displacement meter C, after the deformation, the link type displacement meter C and the link type displacement meters B and D on both sides thereof are bent and the bending angle is changed. Output is generated.

That is, the link-type displacement meter B has an output of a bending angle of ∠B, the link-type displacement meter C has a ∠C, and the link-type displacement meter D has an output of the ∠D. FIG. 7 shows a schematic diagram of the displacement pattern of the link type displacement meters A to E in this case.
The above-described case is a case where the deformation is generated in a very small and narrow range, and when the deformation is large and occurs in a wide range, the number of link type displacement gauges to be deformed increases.

  Next, when a failure occurs in one link type displacement meter, the link type displacement meter is distinguished from the output when the orbit is deformed, which is different from the output zero state due to disconnection or the output of a clear abnormal value. Difficult and insignificant apparent measurement data is output.

The displacement pattern of the link type displacement meter in this case is based on the assumption that there is no actual deformation in the rail 4 or the ground 1 to be measured, and each link type displacement meter AE has no defect. The displacement gauges A to E have no actual bending angle output and no apparent angle output, and the link type displacement gauges A to E maintain the linear state.
The schematic diagram of the displacement pattern of the link type displacement meters A to E in this case is as shown in FIG.

Under such circumstances, for example, when a failure occurs in the link type displacement meter C, an output of an apparent angle ∠C is generated in the link type displacement meter C where the failure occurs, and the link type displacement meter C No apparent angular output is generated in the link type displacement gauges B and D which are adjacent to each other and have no defects.
Therefore, if there is no actual deformation, an apparent angle output is not generated on both sides of the link type displacement meter C where the failure has occurred. A schematic diagram of the displacement patterns of the link type displacement meters A to E in this case is as shown in FIG.

  In this way, when a measurement value is output abnormally at an arbitrary measurement point, the link type displacement meter is detected when there is no change in the output of the link type displacement meter adjacent to the link type displacement meter that output the error. The link type displacement meter that has output the abnormality is determined to be a malfunction or failure.

Based on such a fault or failure of the link type displacement meter and the displacement pattern, the measurement data of the link type displacement meter in which the fault has occurred is interpolated.
In other words, in this case, the measurement data of the link type displacement meter in which the malfunction has occurred is presumed to be actually measured, and the measurement data is output and displayed for interpolation.

  Each of the link type displacement meters A to E is installed by connecting the first and second cylinders 20 and 21 and the link pipes 24 and 25 on both sides in a straight line, and links on both ends installed on one side line. If the type displacement meter is a fixed point and the angle output is zero, the sum of the angle outputs of all link type displacement meters installed on one side line is zero because of the structure of the link type displacement meter.

  Based on this, when one link type displacement meter D is deformed among a plurality of link type displacement meters A to G installed on one side line, as shown in the schematic diagram of FIG. When the angle output between F and G is zero, ∠B + ∠C + (− ∠D) + ∠E + ∠F = 0.

Therefore, when a failure occurs in one link type displacement meter D among the link type displacement meters A to G, the sum of angle output values other than the link type displacement meter D is obtained, and the sign is reversed. If it does, it will become an angle output value of the link type displacement meter D in which the malfunction occurred.
That is, in the case of FIG. 10, the interpolated value of the link displacement meter D can be obtained as ∠D = − (∠B + ∠C + ∠E + ∠F).

Therefore, when link type displacement gauges A to G are measured and managed, even if a fault occurs in one link type displacement gauge and apparent measurement data is output, the link type displacement gauges on both sides thereof are not connected. When apparent measurement data is not output, it is determined that a failure has occurred in the link type displacement meter.
Then, the sum of the angle outputs of each link type displacement meter excluding the link type displacement meter is obtained, and by attaching an opposite sign to this, an interpolated value of the angle output of the link type displacement meter in which a problem has occurred can be obtained.

  Therefore, the stored information of the personal computer 45 includes a basic arithmetic expression relating to the bending angle of the link type displacement meter, the above-described arithmetic expression for determining whether or not the link type displacement meter is defective, and the link type displacement meter. If the calculation formula of the interpolation value in a certain case is stored, the malfunction of the link type displacement meter can be detected quickly and accurately, and its position can be known, so that repair and maintenance can be easily accommodated.

  Further, since the interpolated value of the measurement data of the link type displacement meter in which a failure has occurred can be obtained reasonably and quickly, it is possible to prevent the train from slowing down or stopping due to the apparent measurement data, and Until the link-type displacement meter where the malfunction occurred is restored, it is possible to cope with the actual occurrence of deformation, and to ensure the safety of train operation.

  In the above-described embodiment, a single displacement type displacement meter 17 is provided with a single displacement detection member 23, and the detection member 23 measures the amount of displacement in the horizontal and vertical directions. The present invention can also be applied to a type in which a pair of displacement detection members is provided in 17 and the amount of displacement in the horizontal direction or the vertical direction is measured by these members.

  As described above, the measurement management method of the link type displacement meter according to the present invention can quickly and accurately detect a failure or failure of one measuring instrument, prevent confusion due to its apparent measurement data, and prevent the failure or failure. The interpolated value of the measurement data of the measuring instrument that detected the error can be obtained quickly and accurately, and even if the measurement target actually changes until the measuring instrument recovers, Since it is possible to realize highly reliable measurement management, for example, it is suitable for a track deformation monitoring system, and the safety of train operation can be ensured.

It is sectional drawing which shows the condition which installed the link type displacement meter applied to this invention in the sleeper. It is sectional drawing which follows the AA line of FIG. It is a cross-sectional view which expands and shows the link-type displacement meter applied to this invention. It is an expanded sectional view which follows the BB line of FIG. It is an expanded sectional view which follows the CC line of FIG.

It is a schematic diagram which shows the displacement pattern before the actual deformation of the link type displacement meter applied to this invention. It is a schematic diagram which shows the displacement pattern after the actual deformation | transformation of the link type displacement meter applied to this invention. It is a schematic diagram which shows the displacement pattern before actual deformation | transformation before the malfunction generation of the link type displacement meter applied to this invention.

It is a schematic diagram which shows the displacement pattern after the malfunction occurrence of the link type displacement meter C applied to this invention and before actual deformation. It is a schematic diagram which shows the displacement pattern after actual deformation after the malfunction occurrence of the link type displacement meter D applied to this invention.

Explanation of symbols

1 Measurement target (ground or roadbed)
19 Link type displacement meter A to E Link type displacement meter 21 Tube (second tube)
23 Displacement detecting member 34 Measuring means (strain gauge)
45 Arithmetic unit (personal computer)

Claims (7)

  A plurality of link-type displacement meters are connected and installed at a measurement target or in the vicinity thereof, and the link-type displacement meter includes a cylindrical body that can be displaced in response to deformation of the measurement target, and an interior of the cylindrical body A plurality of link-type displacements, comprising: a displacement detection member arranged so as to be movable together with the cylindrical body; and a measuring means capable of measuring the displacement of the displacement detection member and outputting the measurement data to an arithmetic unit. In the link type displacement meter measurement management method for measuring the deformation of the object to be measured with a meter, when an apparent angle output is generated in the one link type displacement meter, the links arranged on both sides of the link type displacement meter A link type displacement meter measurement management method, comprising detecting a malfunction or failure of the one link type displacement meter based on whether or not an apparent angle output of the type displacement meter is generated.   The link type displacement meter measurement management method according to claim 1, wherein a fault or failure of the one link type displacement meter is detected when there is no apparent angle output of the link type displacement meter arranged on both sides.   The link type displacement meter according to claim 1, wherein the link type displacement meter includes one or more displacement detection members in one link type displacement meter.   A plurality of link-type displacement meters are connected and installed at a measurement target or in the vicinity thereof, and the link-type displacement meter includes a cylindrical body that can be displaced in response to deformation of the measurement target, and an interior of the cylindrical body A displacement detecting member arranged so as to be movable together with the cylindrical body, and a measuring means capable of measuring the displacement of the displacement detecting member and outputting the measurement data to an arithmetic device. In the link type displacement meter measurement management method for measuring the deformation of the measurement target, when an apparent angle output is generated in the one link type displacement meter, the link type displacement is arranged on both sides of the link type displacement meter. Based on the occurrence of an apparent angle output of the meter, a failure or failure of the one link type displacement meter is detected, and a bending or turning angle of the link type displacement meter that has detected the failure or failure is determined. Interpolated value of other link type displacement meter Songs or rotation angle of the measuring de - Measurement method for managing linked displacement meter, characterized by calculating based on data.   The interpolated value of the bending or turning angle of the link type displacement meter in which the malfunction or failure is detected is obtained by calculating the sum of the bending or turning angles of other link type displacement meters other than the link type displacement meter. The link type displacement meter measurement management method according to claim 4.   The link displacement meter measurement management method according to claim 4 or 5, wherein the calculation value is output to the calculation device as an interpolated value of a bending or rotation angle of the link displacement meter in which a malfunction or failure is detected.   The link type displacement meter according to any one of claims 4 to 6, wherein the link type displacement meter includes a single or a plurality of displacement detection members in one link type displacement meter.

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