JP2017044626A - Rail measurement device, rail measurement method, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rail measurement device capable of easily and appropriately measuring curvature of a rail.SOLUTION: A rail measurement device 1 for measuring curvature of a rail comprises: two traveling wheels 101 which are disposed at front and rear of the device in the travel direction and travel on one rail; one or more measurement parts 103 which are provided at positions facing the side face of the rail between the two traveling wheels 101 and acquires distance information showing distance from the side face of the rail every time the two traveling wheels 101 move for measurement distance shorter than distance between the two traveling wheels; and an output part 104 for outputting information according to the distance information acquired by the one or more measurement parts 103.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a device for measuring the bending of a rail and the like.

  As a conventional method for measuring the left-right direction of the rail, that is, the horizontal bend, etc., the 10 m string Masaya method has been known. In this method, a line segment connecting two points on the rail (referred to as a chord), the midpoint of this line segment, and the distance between the rail and the rail are measured as values indicating the bending of the rail (for example, Non-patent document 1).

Satoshi Furukawa, “Track management for improving ride comfort”, [online], [searched on July 23, 2015], Internet <URL: http: // bunken. rtri. or. jp / PDF / cdroms 1/0004/2008/0004004741. pdf>

  However, the conventional technique has a problem that the bending of the rail cannot be easily and appropriately measured. For example, in the conventional technology as described above, it is necessary to repeatedly perform a process of measuring a value indicating a bend by placing a string on a rail, and there is a problem in that work is time-consuming and time-consuming. In addition, there is a problem that it is impossible to grasp from the measurement result what the shape of the portion of the rail where the string is stretched is. Conventionally, in order to improve the measurement accuracy, it is necessary to increase the distance between the two points on the rail and the midpoint of the line segment connecting these two points, and the bending of the rail is detected at a short distance. There was a problem that the bending of the rail could not be measured easily and accurately.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a rail measurement device and the like that can easily and appropriately measure the bending of the rail.

  The rail measuring device of the present invention is a rail measuring device that measures the bending of a rail, and is arranged in the front-rear direction with respect to the traveling direction, and includes two traveling members that travel on one rail and two traveling Each time the two traveling members move a measuring distance that is shorter than the distance between the two traveling members, the distance from the rail side surface is set. It is a rail measuring device provided with one or more measurement parts which acquire distance information to show, and an output part which outputs information according to distance information which one or more measurement parts acquired.

  With this configuration, it is possible to easily and appropriately measure the bending of the rail.

  In the rail measurement device according to the present invention, the rail measurement device includes a plurality of measurement units, and the output unit obtains a plurality of distance information acquired by the plurality of measurement units during each movement for each movement of the measurement distance. It is a rail measuring device that uses it to acquire a representative value of distance information and outputs information corresponding to the acquired representative value as information corresponding to the distance information.

  With this configuration, it is possible to easily and appropriately measure the bending of the rail while suppressing the influence of the partial unevenness of the rail on the measurement.

  Moreover, the rail measuring device of this invention is a rail measuring device in which the output part acquires the median value of several distance information as a representative value of distance information in the said rail measuring device.

  With such a configuration, distance information obtained by measuring partial unevenness of the rail is not acquired, and the influence of the partial unevenness of the rail on the measurement is suppressed, and the bending of the rail is easily and appropriately measured. be able to.

  Further, in the rail measurement device according to the present invention, in the rail measurement device, the output unit uses a representative value acquired for each movement of the measurement distance and one or more representative values acquired before and after the movement, This is a rail measurement device that acquires a second representative value for distance information and outputs information corresponding to the acquired second representative value as information corresponding to the distance information for each movement of the measurement distance.

  With this configuration, it is possible to easily and appropriately measure the bending of the rail while suppressing the influence of the partial unevenness of the rail on the measurement.

  In the rail measurement device according to the present invention, the output unit is a rail measurement device that acquires a second representative value by a moving average method.

  With this configuration, it is possible to easily and appropriately measure the bending of the rail while suppressing the influence of the partial unevenness of the rail on the measurement.

  In the rail measurement device according to the present invention, in the rail measurement device, there is one measurement unit, and the output unit uses a plurality of distance information acquired each time the measurement unit moves the measurement distance by two wheels. Thus, each time the measurement distance is moved, the rail measurement device acquires a representative value of the distance information and outputs the acquired representative value as information corresponding to the distance information.

  With this configuration, it is possible to easily and appropriately measure the bending of the rail while suppressing the influence of the partial unevenness of the rail on the measurement.

In the rail measurement device according to the present invention, the output unit is a rail measurement device that acquires one or more representative values for a plurality of pieces of distance information using a moving average method.

  With this configuration, it is possible to easily and appropriately measure the bending of the rail while suppressing the influence of the partial unevenness of the rail on the measurement.

  In the rail measurement device according to the present invention, the measurement unit is a rail measurement device that acquires distance information indicating a distance from a side surface of the rail using infrared rays.

  With this configuration, the bending of the rail can be easily and appropriately measured.

  The rail measurement device according to the present invention is a rail measurement device having a measurement distance of 5 to 15 mm in the rail measurement device.

  With this configuration, the bending of the rail can be accurately measured.

  According to the rail measuring device or the like according to the present invention, the bending of the rail can be easily and appropriately measured.

A perspective view (Drawing 1 (a)), a right side view (Drawing 1 (b)), a left side view (Drawing 1 (c)), and a front view (outside) showing appearance of a rail measuring device in an embodiment of the invention (Fig. 1 (d)) Block diagram of the rail measurement device Flow chart explaining the operation of the rail measurement device Schematic diagram showing the relationship between the rail measurement device and the rail (FIGS. 4A to 4G) The figure which shows the representative value management table of the rail measurement device The figure which shows the coordinates of the rail which the rail measurement device acquired The figure which shows an example of the external appearance of the computer system The figure which shows an example of a structure of the computer system

  Hereinafter, embodiments of a rail measurement device and the like will be described with reference to the drawings. In addition, since the component which attached | subjected the same code | symbol in embodiment performs the same operation | movement, description may be abbreviate | omitted again.

(Embodiment)
FIG. 1 is a perspective view (FIG. 1 (a)), a right side view (FIG. 1 (b)), a left side view (FIG. 1 (c)), and a front view showing the appearance of a rail measuring device 1 according to the present embodiment. It is a figure (FIG.1 (d)). In FIG. 1A, FIG. 1B, and FIG. 1D, an example in which the rail measuring device 1 is arranged on one rail 500 is shown.

  FIG. 2 is a block diagram of the rail measuring device 1 in the present embodiment.

  The rail 500 is, for example, an elongated steel material that supports the traveling wheel 101 and smoothly runs on the rail. The rail 500 may be, for example, a railroad rail or a rail used for moving a crane used in a harbor or the like.

  The rail measuring device 1 includes two traveling wheels 101, a frame 102, one or more measuring units 103, and an output unit 104.

  Hereinafter, in the present embodiment, a case where there are a plurality of measuring units 103 will be described. In FIG. 1 and FIG. 2, the case where there are three measuring units 103 is shown as an example. However, the number of measuring units 103 is not limited as long as it is plural. Here, for convenience of explanation, the three measurement units 103 are referred to as measurement units 103a to 103c. Here, the two traveling wheels 101 are referred to as a traveling wheel 101a and a traveling wheel 101b.

  The rail measuring device 1 is usually a device that moves on a single rail 500. However, the rail measuring device 1 may be a device that moves on two rails. The rail measuring device 1 may have power such as a motor for moving on the rail 500 or may not have power. For example, when having power, the rail measuring device 1 can be moved by rotating the traveling wheel 101 or the like with the power. Further, for example, when there is no power, the rail measurement device 1 is moved onto the rail 500 by pushing or pulling the rail measurement device 1 via a connecting member (not shown) or the like by a moving body (not shown). Can be moved to. For example, by using an appropriate universal joint or the like as a connecting member, when the rail measuring device 1 is pushed or pulled by a moving body, the rail measuring device 1 is subjected to up / down / left / right, rotation, inclination, or vibration. It can be prevented from being generated. For example, it is preferable that the force applied when the rail measuring device 1 is pushed by the moving body is applied only to one point on the rear surface of the rail measuring device 1. The moving body is, for example, a moving body having power that can move on the same rail 500 as the rail measurement device 1. As the moving body, for example, an image type ultrasonic rail flaw detector rail tester PRD-300 (manufactured by Tokyo Keiki Rail Techno Co., Ltd.) or the like can be used. It does not matter how the rail measuring device 1 is moved on the rail 500. The rail measuring device 1 may be pushed or pulled by the user.

  The two traveling wheels 101 (the traveling wheel 101a and the traveling wheel 101b) are wheels that travel on one rail 500. The two traveling wheels 101 are arranged in the front-rear direction with respect to the traveling direction. The front and rear here may be considered that the relative positional relationship between the two traveling wheels 101 is front and rear, and the two traveling wheels 101 are arranged in front and rear of the rail measuring device 1. You may think that As the two traveling wheels 101 roll, the rail measurement device 1 can move on the rail 500. The two traveling wheels are arranged on the same straight line, for example. The direction in which the traveling wheels 101 are arranged may be considered as the traveling direction of the rail measuring device 1. The two traveling wheels 101 preferably have a structure for preventing derailment from the rail 500 when moving while rotating on the rail 500. For example, it is preferable that the outer periphery of each of the two traveling wheels 101 has a shape that engages with the upper surface and side surfaces of the rail 500. For example, as a structure for preventing the traveling wheel 101 from derailing, a guide that is engaged with a fringe provided on both sides of the traveling wheel 101 along the outer periphery of the traveling wheel 101, a side surface of the rail 500, or the like in a moving state. A member (not shown) or the like may be provided. Moreover, the traveling wheel 101 may have, for example, a concave groove that engages with the rail 500 on its outer periphery as a structure for preventing derailment. The traveling here may be considered as movement on the rail 500, and the traveling direction may be considered as the moving direction.

  At least one of the two traveling wheels 101 may be composed of a plurality of wheels. For example, at least one of the two traveling wheels 101 may be composed of a plurality of wheels arranged in parallel. The plurality of wheels arranged in parallel may or may not have the same axis of rotation. The plurality of wheels arranged in parallel constituting one traveling wheel 101 may or may not be located in the same position in the front-rear direction. In a portion of the plurality of wheels constituting one traveling wheel 101 located on the outermost side of the rail measuring device 1, for example, on the outer periphery of each wheel so that each wheel does not fall from the rail 500. A fringe, a guide member (not shown) that engages with the side surface of the rail 500, or the like may be provided. In FIG. 1, a traveling wheel 101a is configured by a plurality of wheels 1011a and 1012a arranged in parallel so that rotating shafts (not shown) are arranged on the same straight line, and the traveling wheel 101b has a rotating shaft (not shown). It is composed of a plurality of wheels 1011b and 1012b arranged in parallel so as to be arranged on the same straight line, and a rail measurement of a group of wheels 1011a and 1012a and a group of wheels 1011b and 1012b arranged in parallel. The case where the fringe 1011 along the outer periphery of each of the wheels 1011a, 1012a, 1011b, and 1012b is provided in the portion located outside the device 1 is shown as an example.

  It is preferable that at least one, preferably both of the traveling wheels 101 are attached to the frame 102 so as to be rotatable in the horizontal direction. The traveling wheel 101 rotates together with, for example, a guide member attached to the traveling wheel 101. For example, when the traveling wheel 101 receives a force from the side surface or the like of the rail 500 by contacting a side surface or the like of the rail 500 where a guide member (not shown) of the traveling wheel 101 is bent, the traveling wheel 101 is moved in the horizontal direction. Rotate at By rotating, the traveling wheel 101 can move without derailing on the rail 500 even if the rail 500 is bent. For example, the angle at which the traveling wheel 101 can rotate is preferably equal to or larger than an angle in a range in which the traveling wheel 101 can follow the curve of the rail 500.

  The distance between the traveling wheel 101a and the traveling wheel 101b, specifically, the distance between the rotational center (not shown) of the traveling wheel 101a and the rotational center (not shown) of the traveling wheel 101b is, for example, 500 to 1500 mm, and preferably 1000 mm. However, this length may be appropriately changed according to the rail 500 to be measured, the purpose of using the measured value, and the like.

  Here, as an example, a case where the traveling wheel 101a is a front wheel, the traveling wheel 101b is a rear wheel, and the traveling direction of the rail measuring device 1 is a direction from the traveling wheel 101b toward the traveling wheel 101a will be described as an example. . However, the traveling direction of the rail measuring device 1 may be the reverse direction.

  The frame 102 supports two traveling wheels 101. For example, one or more traveling wheels 101 are attached below the frame 102 so as to be rotatable in the horizontal direction. The planar shape of the frame 102 has, for example, a stripe shape extending in the arrangement direction of the two traveling wheels 101.

  Each of the plurality of measurement units 103 acquires distance information indicating the distance from the side surface of the rail 500. The distance here is, for example, the distance between each measuring unit 103 and the side surface of the rail 500 in a direction perpendicular to the arrangement direction of the two traveling wheels 101. The measurement unit 103 acquires distance information with respect to the side surface of the rail 500 without contact with the rail 500, for example. Each measurement unit 103 is a distance sensor, for example. The measurement unit 103 is a distance sensor that acquires distance information in a non-contact manner with the rail 500 using, for example, light such as infrared rays or laser light. Further, the measurement unit 103 may be a distance sensor using ultrasonic waves or the like. For example, when measuring the distance, the measuring unit 103, which is a distance sensor, irradiates the side surface of the rail 500 with light emitted from a light emitting unit (not shown) and receives the reflected light with a light receiving unit (not shown). To get the distance information. Since the structure, operation, and the like of the distance sensor are known techniques, detailed description thereof is omitted here. The distance information acquired by each measurement unit 103 may be information that can acquire a value indicating a distance as a result, for example, information that can be converted into a distance value as a result. For example, the distance information may be a distance value, or may be an output value such as a voltage value or a current value output from a distance sensor that is the measurement unit 103. The distance information acquired by the measurement unit 103 may be, for example, information indicating an absolute distance, and a relative distance such as distance information when the distance information when the rail 500 is not bent is zero. It may be the information shown. Note that this relative distance may be considered as a distance at which the center line of the rail 500 is deformed, for example, a bent distance.

  For example, the plurality of measuring units 103 are provided at positions between the two traveling wheels 101. The fact that the plurality of measuring units 103 are provided at a position between the two traveling wheels 101 means, for example, a line segment connecting the two traveling wheels 101 and the positions of the plurality of measuring units 103 with respect to the straight line. A plurality of measuring units 103 are provided so that a position where a straight line extending vertically from each other intersects is a position between line segments connecting the two traveling wheels 101. This also applies to the case where a plurality of measuring units 103 are arranged at a position between the two wheels 101. Here, the line segment connecting the two traveling wheels 101 is, for example, a line segment connecting the rotation centers (not shown) of the two traveling wheels 101. For example, the plurality of measuring units 103 are preferably arranged at equal intervals along the direction in which the two traveling wheels 101 are arranged. The plurality of measuring units 103 are provided, for example, at positions that are intermediate between the two traveling wheels 101. The positions of the plurality of measurement units 103 are, for example, center positions of the plurality of measurement units 103, specifically, center positions in the arrangement direction of the two traveling wheels 101. For example, the plurality of measurement units 103 are arranged such that the center positions of the plurality of measurement units 103 arranged at equal intervals are located at the midpoint of the two traveling wheels 101.

  For example, as shown in FIG. 1A, when three measuring units 103a to 103c are arranged at equal intervals along the direction from the traveling wheel 101a toward the traveling wheel 101b, the measurement located in the center. Three measuring units 103 a to 103 c are arranged so that the unit 103 b is arranged at a position that is intermediate between the two traveling wheels 101. For example, when the distance between the two traveling wheels 101 is 1000 mm, a position where a line segment connecting the two traveling wheels 101 intersects with a perpendicular line drawn from a central measurement unit 103b to a straight line connecting the two traveling wheels 101; The distance from one traveling wheel 101 is 500 mm. Moreover, it is preferable that the space | interval of the two measurement parts 103 arrange | positioned adjacently among the three measurement parts 103a-103c is 20-50 mm, Preferably, it is 35 mm. The interval between the two measurement units 103 is, for example, the distance between the centers of the measurement units 103 or the distance between the optical axes of the measurement units 103.

  The plurality of measuring units 103 are arranged at positions where the distance from the side surface of the rail 500 can be measured when the two traveling wheels 101 are placed on one rail 500. The plurality of measuring units 103 are arranged at positions facing the side surfaces of the rail 500 when the two traveling wheels 101 are placed on one rail 500. The plurality of measuring units 103 are provided, for example, such that their measuring surfaces (not shown) face the side surfaces of the rail 500. For example, the plurality of measurement units 103 are arranged such that each measurement surface (not shown) is located on the same plane. The plurality of measurement units 103 are arranged, for example, so that each measurement surface (not shown) has the same height. For example, when the plurality of measurement units 103 measure the distance for an ideal rail 500 that has no left-right bending or the like, the distance information acquired by all the measurement units 103 is a value indicating an equal distance. It is arranged as follows.

  The plurality of measuring units 103 are attached to the frame 102. For example, the plurality of measurement units 103 are provided below the vicinity of the side surface of the frame 102. In FIG. 1, as an example, a case where the frame 102 has a plurality of portions with a shape protruding downward on the right side surface for holding the plurality of measurement units 103 on the right side surface is shown. However, the plurality of measuring units 103 may be attached to the frame 102 via, for example, a holding member (not shown).

  Each of the plurality of measurement units 103 acquires distance information indicating the distance from the side surface of the rail 500 each time the two traveling wheels 101 move the measurement distance, that is, every time the measurement wheels 103 travel the measurement distance. The measurement distance is a distance shorter than the distance between the two traveling wheels 101. The movement of the two traveling wheels 101 here is movement on the rail 500. The movement of the two traveling wheels 101 may be considered as the movement of the rail measuring device 1. The measurement distance is, for example, a distance at which measurement is performed. The measurement distance is usually constant, but may not be constant. For example, the measurement distance may change according to a rule or the like, or may change periodically. It does not matter how the plurality of measurement units 103 acquire distance information indicating the distance from the side surface of the rail 500 every time the measurement distance is moved. For example, when the speed at which the rail measurement device 1 moves on the rail 500 is known, each measurement unit 103 may acquire distance information every time when the measurement distance is divided by this known speed. good. For example, when the measurement distance is a constant distance and the speed at which the rail measurement device 1 moves on the rail 500 is constant, each measurement unit 103 may acquire the distance information at every predetermined time. good. In this case, the product of the moving speed of the rail measuring device 1 and the time specified in advance may be considered as the measurement distance. In addition, the rail measuring device 1 is provided with a travel distance meter (not shown) equipped with an encoder or the like that can acquire a travel distance based on the number of rotations of the traveling wheel 101, the rotated angle, and the like. The travel distance of the rail measuring device 1 may be acquired by a meter, and the distance information may be acquired when the acquired value becomes the measurement distance. In addition, each time a moving body (not shown) that moves the rail measuring device 1 on the rail 500 measures the moving distance, and the measured moving distance becomes the measuring distance, each measuring unit 103 of the rail measuring device 1 An instruction to execute distance measurement may be transmitted to a control unit or the like that controls each measurement unit, and each measurement unit may measure the distance in response to this instruction. Also in this case, if the moving speed is known, the moving time may be used instead of the moving distance.

  By shortening the measurement distance, information indicating the bending of the rail 500 can be accurately measured. For example, the measurement distance is preferably a constant value of 5 to 15 mm, and more preferably about 10 mm. By acquiring distance information for each measurement distance, it is possible to acquire more detailed information about the bending of the rail 500 than the conventional 10 m string Masaya method.

  For example, each measurement unit 103 delivers the acquired distance information to the output unit 104. Each measurement unit 103 may pass the acquired distance information to the output unit 104 in association with a measurement unit identifier that is an identifier of each measurement unit 103, for example. The measurement unit identifier is, for example, a code assigned to the measurement unit 103, a name, or the like. The serial number of the measurement unit 103 may be used.

  In the present embodiment, as shown in FIG. 1, a case where a plurality of measurement units 103 are provided on the right side in the traveling direction of the rail measurement device 1 is illustrated as an example. 103 may be provided on the left side.

  The rail measurement device 1 may include a control unit (not shown) that performs control for causing one or more measurement units 103 to measure the distance. Further, each measuring unit 103 may include means for performing control for performing measurement every time the measurement distance is moved. For example, the timing at which each measurement unit 103 as described above acquires distance information may be determined by, for example, each measurement unit 103 or may be determined by a control unit (not illustrated) included in the rail measurement device 1. .

  The output unit 104 outputs information corresponding to the distance information acquired by one or more measurement units 103. The information corresponding to the distance information may be, for example, the distance information itself, information acquired using the distance information, or the like. For example, the output unit 104 outputs the distance information acquired by each of the plurality of measurement units 103 as information corresponding to the distance information.

  For example, when the distance information acquired by the measurement unit 103 is a distance from the measurement unit 103 to the side surface of the rail 500, the output unit 104 measures the distance when the rail 500 is not bent. A relative distance obtained by subtracting the distance indicated by the distance information acquired by the unit 103 may be acquired as distance information and output.

  The output unit 104 may output the distance information acquired by each of the plurality of measurement units 103 as information corresponding to the distance information in association with the measurement unit identifier of the measurement unit 103 that acquired the distance information.

  For each movement of the measurement distance, the output unit 104 acquires a representative value of the distance information using a plurality of distance information acquired by the plurality of measurement units 103 during each movement, and displays information corresponding to the acquired representative value. Alternatively, it may be output as information corresponding to the distance information. The information corresponding to the representative value may be, for example, the representative value itself or information acquired using the representative value. For example, when the acquired representative value is a voltage value or a current value corresponding to the distance acquired by the distance sensor (not shown), the output unit 104 acquires the distance corresponding to the voltage value or the like, and the representative value It may be output as information according to. For example, the output unit 104 acquires the median value of the plurality of distance information acquired by the plurality of measurement units 103 during each movement as a representative value of the distance information. Further, the output unit 104 may acquire an average value of a plurality of distance information acquired by the plurality of measurement units 103 during each movement as a representative value of the distance information. Also, from the plurality of distance information acquired by each of the plurality of measurement units 103, the number of distance information designated in advance from the largest value and the number of distance information designated in advance from the smallest value are excluded. The average value of the remaining distance information may be acquired as the representative value of the distance information. The information corresponding to the representative value may be, for example, a representative value or information acquired using the representative value.

  By acquiring a representative value such as the median value described above from a plurality of distance information acquired by a plurality of measuring units 103, for example, local unevenness on the rail 500 that is not directly related to the bending or arrangement of the rail 500, etc. If there is a scratch or dirt on the rail 500 that affects the measurement by the measurement unit 103, the distance information obtained by measuring such unevenness, scratch or dirt may be difficult to use, Such a change in distance due to unevenness, scratches and dirt can be reduced by averaging and the like, and it is possible to output information according to the distance with high accuracy for the rail 500.

  In addition, the output unit 104 uses the representative value acquired for each movement of the measurement distance and one or more representative values acquired before and after the movement, for each second movement of the measurement distance. The information corresponding to the acquired second representative value (for example, rail position information as described later) may be output as information corresponding to the distance information. The one or more representative values acquired before and after the movement are, for example, one or more representative values acquired before the movement and one or more representative values acquired after the movement. For example, the output unit 104 uses a representative value of a plurality of distance information acquired by the measuring unit 103 for each movement of the measurement distance and one or more representative values acquired before and after the movement, by a moving average method. A second representative value may be acquired. The value of the number n of the latest representative values before and after being used for averaging in the moving average method does not matter. In addition, when using the moving average method, weighting may be performed as appropriate.

  For example, for each movement of the measurement distance, the output unit 104 uses the representative value of the distance information acquired using the plurality of measurement units 103 and the representative value of the distance information acquired for each movement, and the latest before and after that The average value with the representative value of the distance information acquired for each of the previously specified number of movements is acquired, and information according to the second representative value that is the acquired average value, for example, the second representative value itself Alternatively, information acquired using the second representative value may be output as information corresponding to the distance information at the time of each movement. The information corresponding to the second representative value output in this case is, for example, the representative value of the distance information acquired by the output unit 104 using the plurality of distance information respectively acquired by the plurality of measuring units 103 during each movement. You can think of it as information. The numbers designated in advance before and after here are one or more numbers, and the values may or may not be equal.

  As described above, by using the moving average method or the like to acquire the second representative value, it is possible to smooth noise that is randomly generated in the measurement unit 103 such as a sensor. For example, such randomly generated noise has a normal distribution, so that an error can be almost eliminated by averaging. Thereby, the influence which it has on the measurement results, such as the noise which generate | occur | produces in the measurement part 103, can be made small.

  The output unit 104 includes a straight line drawn perpendicularly to a straight line connecting the two traveling wheels 101 of the rail measuring device 1 from one measuring unit 103 that acquires a representative value, which will be described later, and the distance between the two traveling wheels 101. The distance from the position where the connecting straight line intersects to one traveling wheel 101 (that is, one of the traveling wheel 101a and the traveling wheel 101b) is acquired and output as part of the information corresponding to the distance information. Also good. This distance may be considered as a distance between one traveling wheel 101 and the position of the rail measurement device 1 corresponding to the measurement unit 103 that acquired the representative value. Regardless of the measurement unit 103 that has acquired the representative value, the distance between the midpoint of the two traveling wheels 101 and one of the traveling wheels 101 is acquired as such a distance, or such a measuring unit 103 is used. If the position information is unnecessary, the acquisition of such distance information may be omitted.

  The output unit 104 may acquire and output the position information of the rail 500, specifically, the position information of the portion of the rail 500 measured by the measurement unit 103 as information corresponding to the distance information. The position information of the rail 500 at the part where the measurement is performed is, for example, the position information of the center in the width direction of the rail 500 corresponding to the part where the measurement is performed. The position information here is, for example, coordinates. This position information is acquired using, for example, the representative value of the distance information acquired by the output unit 104 using the plurality of distance information acquired by the plurality of measurement units 103 during each movement as described above.

  For example, the output unit 104 sets a first axis and a second axis that are orthogonal to each other in the horizontal plane, and the position information of the rail 500 is a coordinate plane configured by the first axis and the second axis. The coordinates for one or more points of the rail 500 are acquired. The first axis is, for example, an axis perpendicular to the traveling direction at the start of measurement by the rail measuring device 1, and is, for example, the x axis. The second axis is, for example, an axis that extends in the traveling direction at the start of measurement by the rail measuring device 1, and is, for example, the y-axis.

  For example, the output unit 104 acquires the representative values of the distance information as described above in the order in which the measurement corresponding to the representative values is performed, and sequentially adds the acquired representative values. Then, the value obtained by adding the representative value in each order is the coordinate value of the first axis indicating the center position in the width direction of the portion of the rail 500 where the measurement unit 103 has measured in each order. For example, it is acquired as an x coordinate value. Note that the distance information and the representative value of the distance information are, for example, values having positive and negative signs with a value obtained when the rail 500 is not bent being 0, and the direction in which the rail 500 is bent is reversed. In some cases, the sign of the distance information and the representative value of the distance information is reversed.

  Further, each time a representative value is added as described above, a measurement distance that is a movement distance on the rail 500 at the time of measurement is acquired and added in the order in which the measurement corresponding to the representative value is performed. . Then, the value of the measured distance obtained by adding in each order is the second axis indicating the position in the longitudinal direction of the rail 500 of the portion of the rail 500 measured by the measuring unit 103 in each order. Acquired as a coordinate value, for example, a y coordinate value. The reference point (for example, 0 point) of the second axis is, for example, the two traveling wheels 101 from the midpoint of the two traveling wheels 101 of the rail measuring device 1 before moving for measurement. The position where the straight line extending perpendicularly to the straight line connecting the rails 500 overlaps is used. Then, the output unit 104 outputs a set of the first axis coordinate value and the second axis coordinate value acquired in each order.

  For example, the output unit 104 may output information indicating the position of the rail measurement device 1 on the rail 500 when the plurality of measurement units 103 acquire the distance information as part of the information corresponding to the distance information. Good. The position of the rail measurement device 1 on the rail 500 may be, for example, a partial position of the rail measurement device 1. For example, the position of the rail measuring device 1 on the rail 500 corresponds to the position of the traveling wheel 101a or the traveling wheel 101b of the rail measuring device 1 on the rail 500 or the midpoint of the two traveling wheels 101a of the rail measuring device 1. This is the position on the rail 500. The information indicating the position on the rail 500 may be, for example, information that can eventually acquire information on the position of the rail measuring device 1 on the rail 500. For example, the information on the rail 500 that is specified in advance may be used. The rail of the rail measurement device 1 at the time when the distance information is acquired from the position (for example, the position on the rail 500 where the first distance information is acquired, the position of the starting point where the movement for acquiring the distance information is started, etc.) The distance to the position on 500 may be sufficient. Since the rail 500 is normally fixed to the ground or the like, if the departure place and the moving distance are known, the position on the rail 500 can be specified and information indicating this position can be acquired. Moreover, when the measurement distance and speed which the rail measuring device 1 moved on the rail 500 in order to acquire one or more distance information are known (for example, when it is a fixed known value, or each distance information is acquired) In the case where the measured distance and speed moved to do so are known), the information indicating the position on the rail 500 is obtained after acquiring the value such as the number of times indicating the order in which the distance information is acquired or the distance information. The elapsed time may be used. When the measurement start time is known, the current time may be used instead of the elapsed time. It is because the position on the rail 500 of the rail measuring device 1 at the time of measurement can be specified by combining these pieces of information. For example, information indicating the position of the rail measuring device 1 on the rail 500 can be acquired by multiplying the acquired order by a fixed measurement distance. In addition, instead of outputting a value indicating the order, by outputting (for example, accumulation or the like) in the order in which the distance information is acquired, this accumulation order is set to the rail of the rail measurement device 1 when the distance information is acquired. Instead of the information indicating the position on 500, the information may be appropriately used.

  The output here is a concept including display on a display, printing on a printer, transmission to an external device, accumulation in a recording medium, delivery of processing results to another processing device or another program, and the like. is there.

  The output unit 104 may or may not include an output device such as a display or a speaker. The output unit 104 can be implemented by output device driver software, or output device driver software and an output device.

  Note that the rail measurement device 1 may include a storage unit (not shown) that serves as an accumulation destination when the output unit 104 accumulates information according to distance information, for example. The storage unit is preferably a non-volatile recording medium, but can also be realized by a volatile recording medium.

  The connection between the plurality of measurement units 103 and the output unit 104 may be wired connection or wireless connection. In the case of wireless connection, for example, wireless communication means (not shown) may be provided in the measurement unit 103 and the output unit 104, respectively.

  Next, an example of operation | movement of the rail measuring device 1 is demonstrated using the flowchart of FIG. Here, a case where the measurement distance is constant will be described as an example. Here, an example will be described in which the output unit 104 acquires coordinates that are position information of the rail 500 as information according to the distance information. It is assumed that the coordinates are coordinates represented by a set of the x-coordinate of the x-axis and the y-coordinate of the y-axis as described above.

  (Step S101) The plurality of measurement units 103 newly moved the measurement distance from the position where the rail measurement device 1 has moved one measurement distance immediately before (the movement start position at the start of movement). It is determined whether or not the measurement is performed. For example, a device (not shown) that acquires the moving distance of the rail measuring device 1 or a moving distance meter that acquires a moving distance (not shown) of the rail measuring device 1 has moved the new measuring distance. When the instruction is output, an instruction to measure the distance is output to the plurality of measurement units 103, and the plurality of measurement units 103 newly move the measurement distance when receiving the instruction. It may be decided to perform measurement according to circumstances. If it is determined that measurement is to be performed, the process proceeds to step S102. If it is determined that measurement is not to be performed, the process returns to step S101.

  (Step S <b> 102) Each of the plurality of measuring units 103 measures the distance to the rail 500 and acquires distance information. Here, it is assumed that the acquired distance information is a distance value.

  (Step S103) The output unit 104 acquires a representative value using the plurality of distance information acquired by the plurality of measurement units 103 in step S102. For example, the median value of a plurality of distance information is acquired. The acquired representative value is temporarily stored in a storage unit (not shown) in association with, for example, a serial number indicating the acquisition order.

  (Step S104) The output unit 104 determines whether or not to end the measurement. For example, the end of measurement may be determined when the plurality of measurement units 103 do not acquire distance information for a predetermined time or more. Further, the measurement may be ended when an instruction or the like, not shown, receives an instruction to end the measurement from another device or a user. If the measurement is to end, the process proceeds to step S105. If not, the process returns to step S101.

  (Step S105) The output unit 104 substitutes 1 for the value of the counter k.

(Step S106) The output unit 104 acquires the _{x 1} is the first x-coordinate for the rail 500, the _{y 1} and a first y coordinate. The x _1, for example, acquires the first acquired representative value at step S103. As the y _1, since the first moving distance to start moving is the point where a measured distance, to obtain the value of the measurement distance.

  (Step S107) The output unit 104 increments the value of the counter k by 1.

  (Step S108) The output unit 104 determines whether or not the kth representative value is included in the representative values acquired in step S103. If there is, the process proceeds to step S109, and if not, the process proceeds to step S115.

  (Step S109) The output unit 104 determines that the value of the counter k is larger than the value of n (n is a positive integer of 1 or more) indicating the number of representative values immediately before the k-th representative value used in the moving average method. Determine whether or not. If so, the process proceeds to step S112. If not, the process proceeds to step S110.

(Step S110) The output unit 104, as the value of _{x k} is the k-th x-coordinate of the rail, and _{x k-1} is a k-1 th x-coordinate, k-th representative values acquired in step S103 And get the sum. The acquired _xk is temporarily stored in a storage unit (not shown).

(Step S <b> 111) The output unit 104 obtains the sum of the _k−1 y coordinate y _k−1 and the measured distance as the value of y _k that is the k th y coordinate of the rail. The acquired y _k is temporarily stored in a storage unit (not shown). Then, the process returns to step S107.

  (Step S112) The output unit 104 determines whether there is a k + n-th representative value. If yes, the process proceeds to step S113. If not, the process returns to step S110. Here, it is assumed that the number of representative values immediately after the k-th representative value used in the moving average method is n as described above.

  (Step S113) The output unit 104 acquires a second representative value for the kth representative value by the moving average method. Specifically, the representative values from k−n to k + n are read from the representative values acquired in step S103, and the average value of the read representative values is used as the second representative value for the k-th representative value. get.

(Step S114) The output unit 104, as the value of _{x k} is the k-th x-coordinate of the rail, and _{x k-1} is a k-1 th x-coordinate, k-th representative values acquired in step S113 Get the sum of the second representative value for. The acquired _xk is temporarily stored in a storage unit (not shown). Then, the process proceeds to step S111.

  (Step S115) The output unit 113 outputs the coordinates acquired in Step S110 and Step S111 and the coordinates acquired in Step S114 and Step S111. For example, it accumulates in a storage unit (not shown). Then, the process ends.

In the flowchart of FIG. 3, the measuring unit 103 before the rail measuring apparatus 1 is moved by measuring the distance, as 0 since the representative value of this distance as x _1, which is before the movement values of y ₁ Also good.

  Further, in the above, when the moving average method cannot be used for the kth representative value, for example, when there are no more than n representative values immediately before and after, the kth representative value is used as it is. However, the k-th representative value for which the moving average method cannot be used may not be used for the process of acquiring the coordinates of the rail 500 and the like.

  Hereinafter, a specific operation of the rail measurement device 1 according to the present embodiment will be described with an example. Here, as shown in FIG. 1, the rail measurement device 1 includes three measurement units 103 a to 103 c, and the distance between the two traveling wheels 101 is 1000 mm and the measurement distance is 10 mm. I will explain. In addition, when a moving body (not shown) that moves on the same rail 500 as the rail measuring device 1 pushes the rail measuring device 1 from behind, the rail measuring device 1 moves the rail 500 information. An example will be described. In addition, here, the moving body measures the moving distance on its own rail at any time, and each time the measured distance becomes the measuring distance, an instruction to measure the distance is given to the measuring unit of the rail measuring device 1. It is assumed that the measurement units 103a to 103c measure the distance when receiving this signal.

  A moving body (not shown) that moves on the rail 500 while pushing the rail measuring device 1 measures the distance while moving with the movement start time as a reference point, and moves every 10 mm, that is, every time the moving distance becomes 10 mm. In addition, an instruction to measure the distance is transmitted to the three measuring units 103 a to 103 c of the rail measuring device 1. The transmission here may be wireless transmission or wired transmission. For example, if the moving body (not shown) and the rail measurement device 1 move 10 mm from the movement start point, the moving body (not shown) transmits an instruction to measure the distance to the measurement units 103a to 103c.

If the measurement parts 103a-103c receive the instruction | indication which measures distance from a moving body, each will measure distance and will acquire distance information. Here, it is assumed that the acquired distance information is a distance value. The distance information here is a distance value when the distance when the rail 500 extends in a straight line is assumed to be zero. Here, the distance information when the rail 500 is approaching the measuring units 103a to 103c is separated from the measuring unit 103a to 103c, which is a positive value here, rather than the case where the rail 500 is in a linearly extending state. Here, the distance information is a negative value. However, the positive and negative signs may be reversed. Here, for example, it is assumed that the measurement units 103a to 101c acquire distance information L _{a1 to} L _c1 , respectively. Here, L _a1 , L _{b1, and the} like are assumed to be arbitrary numerical values representing distance here.

The output unit 104 acquires the distance information acquired by the measurement units 103a to 103c, and acquires a median value as a representative value of the acquired distance information. Here acquires distance information L _b1 which measuring unit 103b acquires as a representative value is the median. The output unit 104 temporarily stores the acquired distance information Lb1 in a storage unit (not shown) in association with the serial number “0001” indicating the acquired order.

  Similarly, every time the rail measuring device 1 moves 10 mm, the measuring units 103a to 103c each acquire distance information, and the output unit 104 acquires the median value of the three acquired distance information as a representative value. It is temporarily stored in association with a serial number indicating the acquired order.

  FIG. 4 is a schematic diagram (FIG. 4A-FIG. 4G) showing the relationship between the rail 500 and the rail measuring device 1. FIGS. 4A to 4G show from the state in which the k-3th distance information is acquired to the state in which the k + 3rd distance information is acquired. In the figure, the distance S indicates the measurement distance. In addition, Δx is a representative value of the distance acquired by the measurement units 103a to 103c. Here, the distance acquired by the measurement unit 103 is expressed as the distance between the center position 1a of the rail measurement device 1 and the center position of the rail 500 parallel to the portion where the measurement of the rail 500 is performed. It is assumed that the shape of the rail 500 between the two traveling wheels 101a and the traveling wheels 101b of the rail measuring device 1 when the kth distance information is acquired is an ideal linear shape.

  FIG. 5 is a representative value management table for managing the representative values acquired and temporarily stored by the output unit 104 of the rail measuring device 1. The representative value management table has attributes of “acquisition order” which is a serial number indicating the acquisition order of representative values and “representative value” indicating the representative value.

  Then, when the measurement of the range designated in advance of the rail 500 is completed, when the user performs an operation indicating that the measurement is completed on the movable body (not shown), the movable body is connected to the rail measurement device 1. Information indicating that the measurement is completed is output to the output unit 104. Note that the predesignated range of the rail 500 is, for example, a range having a total length of 1000 m.

  When the output unit 104 receives information indicating that the measurement is completed, the output unit 104 obtains a further representative value by the moving average method using the representative value acquired above. Here, using the moving average method, as the k-th new representative value, the k-th representative value acquired by using the distance information acquired by the measuring units 103a to 103c and the three before and after the nearest one are obtained. An average of a total of seven representative values including the representative value is acquired. That is, here, the average is calculated by setting the number n of representative values before and after used in the moving average method to 3.

First, the representative value acquired first in the representative value management table shown in FIG. 5, that is, the representative value “L _b1 ” of the record (row) whose “acquisition order” is “0001” was acquired before that. Since there are not three or more representative values, the moving average method cannot be used, and the output unit 104 simply acquires the representative value “L _b1 ” as it is. Since the representative value is the representative value acquired first, the representative value “L _b1 ” is acquired as the x coordinate indicating the position of the rail 500.

The output unit 104 acquires “10 mm” as the y coordinate indicating the position of the rail 500 because the distance moved until the first representative value is acquired is a distance corresponding to one measurement distance. Then, the acquired coordinates (L _b1 , 10) are temporarily stored in a storage unit (not shown) or the like.

Also, for the representative value “L _b1 ” of the record (row) whose “acquisition order” is “0002” which is the second representative value, there are no more than three representative values acquired before that, The moving average method cannot be used, and the output unit 104 simply acquires the representative value “L _b2 ” as it is. Then, a value “L _b1 + L _b2 ” obtained by adding the representative value to the representative value “L _b2 ” acquired above is acquired as an x coordinate indicating the position of the rail 500.

Further, since the distance moved until the second representative value is acquired is a distance corresponding to two measurement distances, the output unit 104 indicates the position of the rail 500 by “20 mm” which is a value of 10 mm × 2. Get as y-coordinate. Then, the acquired coordinates (L _b1 + L _b2 , 20) are temporarily stored in a storage unit (not shown) or the like.

Similarly, a representative value “L _b3 ” is acquired for the third acquired representative value, and coordinates (L _b1 + L _b2 + L _b3 , 30) are acquired and temporarily stored in a storage unit (not shown).

As for the representative value “L _a4 ” of the fourth representative value, that is, the record (row) whose “acquisition order” is “0004”, there are three or more representative values acquired before that, and thereafter Since there are three or more representative values acquired in the above, the output unit 104 acquires the second representative value using the moving average method. Specifically, the representative values of the records whose “acquisition order” is “0001” to “0007” are read from the representative value management table shown in FIG. 5 and are average values of the read representative values (L _b1 + L _b2 + L _b3 + L _a4 + L _a5 + L _c6 + L _c7 ) / 7 is acquired as the second representative value. Then, a value L _b1 + L _b2 + L _b3 + (L _b1 + L _b2 + L _b3 + L _a4 + L _a5 + Lc6 + Lc7) / 7 is obtained by adding the acquired second representative value to the x coordinate acquired for the immediately preceding third representative value. , And is acquired as an x coordinate indicating the position of the rail 500. In addition, since it is the representative value acquired fourth, “40 mm”, which is a value of 10 mm × 4, is acquired as the y coordinate indicating the position of the rail 500 in the same manner as described above. Then, the acquired coordinates are temporarily stored in a storage unit (not shown).

  Similarly, for the fifth and subsequent representative values, the second representative value is acquired using the moving average method, and the coordinates of the rail 500 obtained using the acquired second representative value are stored in a storage unit (not shown). It accumulates sequentially.

  In addition, when trying to acquire the second representative value for one representative value, if there are not three or more representative values acquired thereafter, the moving average method cannot be used, so the output unit 104 does not use this one. Is obtained instead of the second representative value, and the coordinates of the rail 500 are calculated in the same manner as described above using the obtained representative value.

  FIG. 6 is a diagram illustrating coordinates that are position information of the rail 500 acquired by the output unit 104.

  The output unit 104 accumulates the acquired coordinates as illustrated in FIG. 6 in a storage unit (not illustrated) or the like when the process of acquiring the coordinates that are the position information for the representative value illustrated in FIG. 5 is completed. In addition, instead of accumulating the acquired coordinates, or in addition to accumulating, the acquired coordinates may be transmitted to another device or the like by wired or wireless communication.

  As described above, according to the present embodiment, every time the measurement distance shorter than the distance between the two traveling wheels is moved, the distance to the side surface of the rail is measured, and information corresponding to the measured distance information is output. Thus, the bending of the rail can be easily and appropriately measured.

  In addition, a representative value of distance information is acquired using a plurality of distance information acquired by two or more measurement units, and information corresponding to the representative value is output as information corresponding to the distance information. It is possible to perform highly accurate measurement while suppressing the influence on distance measurement such as unevenness of the surface.

  In this embodiment, the measurement interval between the two points on the rail and the midpoint of the line segment connecting the two points is made sufficiently shorter than before, and the measurement results are integrated easily. In addition to being able to perform measurement, it is possible to realize high-precision measurement as in the conventional case.

  Further, in this embodiment, even when the rail has a dent, the rail is bent by instantaneously obtaining a measurement result indicating the dent by sufficiently reducing the capture interval. Even if it is visible, the measurement result when there is no dent is obtained immediately afterwards, so that, for example, the measurement person makes a determination on the measurement result using a preset reference or the like, so that the rail It becomes possible to discriminate between a bend and a dent.

  In the above embodiment, the case where a plurality of measuring units 103 are provided has been described as an example. However, in the present invention, the number of measuring units 103 may be one, or one. In this case, it is possible to easily and appropriately measure the bending of the rail by acquiring the distance information every time the measurement distance is moved.

  Further, in the case where there is one measuring unit 103, the output unit 104 uses the plurality of distance information acquired by the one measuring unit 103 each time the two traveling wheels 101 move the measured distance, You may make it acquire the representative value of distance information for every movement, and output the information according to the acquired representative value as information according to distance information. For example, as described above, the output unit 104 may acquire one or more representative values for a plurality of distance information using the moving average method. Thereby, for example, even when the rail 500 has irregularities that are not directly related to the bending or arrangement of the rails 500, the change in distance due to the irregularities can be reduced by averaging or the like. It is possible to output information according to the distance with high accuracy.

  In the above-described embodiment, the case where the rail measuring device 1 is arranged in the front-rear direction with respect to the traveling direction and includes two traveling wheels 101 that travel on one rail 500 has been described. In the present invention, instead of each of the two traveling wheels 101, a cross-sectional shape perpendicular to the rail 500 is engaged with the upper portion of the rail (for example, a U-shaped shape that covers the upper portion of the rail 500). ), A member that slides on the rail 500, and a cross-sectional shape perpendicular to the rail 500 that is engaged with the upper portion of the rail, and a surface that contacts the rail 500 is rotatable such as a bearing. You may make it use the traveling member which can drive | work on the rail 500, such as a member provided with the spherical body. In other words, in the present invention, the rail measuring device 1 may be provided with two traveling members that are arranged forward and backward with respect to the traveling direction and travel on the single rail 500. In addition, it is preferable that a resin or the like for reducing friction with the rail 500 is provided on at least a surface of the member that slides on the rail 500 in contact with the rail 500.

  In the above embodiment, each process (each function) may be realized by centralized processing by a single device (system), or by distributed processing by a plurality of devices. May be.

  In the above embodiment, each component may be configured by dedicated hardware, or a component that can be realized by software may be realized by executing a program. For example, each component can be realized by a program execution unit such as a CPU reading and executing a software program recorded on a recording medium such as a hard disk or a semiconductor memory. At the time of execution, the program execution unit may execute the program while accessing a storage unit (for example, a recording medium such as a hard disk or a memory).

  In addition, the software which implement | achieves the rail measuring device in the said embodiment is the following programs. In other words, this program is a program for causing a computer to function as a rail measuring device that measures the bending of the rail, and is arranged in the front and rear with respect to the traveling direction, and two programs traveling on one rail. It is provided at a position facing the side surface of the rail between the traveling members, and the distance from the side surface of the rail every time the two traveling members move a measurement distance that is shorter than the distance between the two traveling members. It is a program for functioning as an output part which outputs information according to distance information which one or more measuring parts which acquire distance information which shows.

  In the program, the functions realized by the program do not include functions that can be realized only by hardware. For example, a function that can be realized only by hardware such as a modem or an interface card in an acquisition unit that acquires information or an output unit that outputs information is not included in the function realized by the program.

  Further, the computer that executes this program may be singular or plural. That is, centralized processing may be performed, or distributed processing may be performed.

  FIG. 7 is a schematic diagram illustrating an example of an external appearance of a computer that executes the program and realizes the rail measurement device according to the embodiment. The above-described embodiment can be realized by computer hardware and a computer program executed on the computer hardware.

  In FIG. 7, a computer system 900 includes a computer 901 including a CD-ROM (Compact Disk Read Only Memory) drive 905, a keyboard 902, a mouse 903, and a monitor 904.

  FIG. 8 is a diagram showing an internal configuration of the computer system 900. In FIG. 8, in addition to the CD-ROM drive 905, a computer 901 is connected to an MPU (Micro Processing Unit) 911, a ROM 912 for storing a program such as a bootup program, and the MPU 911, and receives instructions of an application program. A RAM (Random Access Memory) 913 that temporarily stores and provides a temporary storage space, a hard disk 914 that stores application programs, system programs, and data, and a bus 915 that interconnects the MPU 911, ROM 912, and the like Prepare. The computer 901 may include a network card (not shown) that provides connection to the LAN.

  A program that causes the computer system 900 to execute the functions of the rail measurement device and the like according to the above-described embodiment may be stored in the CD-ROM 921, inserted into the CD-ROM drive 905, and transferred to the hard disk 914. Instead, the program may be transmitted to the computer 901 via a network (not shown) and stored in the hard disk 914. The program is loaded into the RAM 913 when executed. The program may be loaded directly from the CD-ROM 921 or the network.

  The program does not necessarily include an operating system (OS) or a third-party program that causes the computer 901 to execute the functions of the rail measurement device according to the above-described embodiment. The program may include only a part of an instruction that calls an appropriate function (module) in a controlled manner and obtains a desired result. How the computer system 900 operates is well known and will not be described in detail.

  The present invention is not limited to the above-described embodiments, and various modifications are possible, and it goes without saying that these are also included in the scope of the present invention.

  As described above, the rail measurement device and the like according to the present invention are suitable as a device for performing measurement related to the rail, and are particularly useful for measuring the bending of the rail and the like.

DESCRIPTION OF SYMBOLS 1 Rail measuring device 101, 101a, 101b Traveling wheel 1011a, 1012a, 1011b, 1012b Wheel 102 Frame 103, 103a-103c Measuring part 104 Output part 500 Rail 1011 Fringe

Claims (11)

A rail measuring device for measuring the bending of a rail,
Two traveling members arranged on the front and rear with respect to the traveling direction and traveling on one rail;
It is provided at a position facing the side surface of the rail between the two traveling members, and each time the two traveling members move a measurement distance that is shorter than the distance between the two traveling members, One or more measuring units for obtaining distance information indicating a distance to the side surface of the rail;
A rail measurement device comprising: an output unit that outputs information according to distance information acquired by one or more of the measurement units. The measurement unit is plural,
The output unit acquires a representative value of distance information using a plurality of distance information acquired by each of the plurality of measuring units at each movement for each movement of the measurement distance, and obtains information corresponding to the acquired representative value. The rail measuring device according to claim 1 which outputs as information according to distance information. The rail measurement device according to claim 2, wherein the output unit acquires a median value of a plurality of distance information as a representative value of the distance information. The output unit uses a representative value acquired for each movement of the measurement distance and one or more representative values acquired before and after the movement, and a second representative for the distance information for each movement of the measurement distance. The rail measuring device according to claim 2 or 3, wherein a value is acquired, and information corresponding to the acquired second representative value is output as information corresponding to the distance information. The rail measurement device according to claim 4, wherein the output unit acquires a second representative value by a moving average method. The measuring unit is one,
The output unit uses a plurality of distance information acquired each time the two wheels move the measurement distance by the measurement unit, acquires a representative value of distance information for each movement of the measurement distance, and acquires the representative The rail measuring device according to claim 1 which outputs a value as information according to said distance information. The rail measurement device according to claim 6, wherein the output unit acquires one or more representative values for the plurality of distance information using a moving average method. The rail measurement device according to any one of claims 1 to 7, wherein the measurement unit acquires distance information indicating a distance from a side surface of the rail using infrared rays. The rail measurement device according to any one of claims 1 to 8, wherein the measurement distance is 5 to 15 mm. Two traveling members that are arranged in the front-rear direction with respect to the traveling direction, and are provided at positions facing the side surfaces of the rail between the two traveling members, A rail measurement method that measures the bending of the rail using one or more measurement units that acquire distance information indicating the distance to the side surface of the rail and an output unit,
Each time the one or more measuring units move a measurement distance that is shorter than the distance between the two traveling members, distance information indicating a distance from the side surface of the rail is acquired. A measurement step;
A rail measurement method comprising: an output step in which the output unit outputs information corresponding to the distance information acquired in the measurement step. Computer
A program for functioning as a rail measuring device for measuring the bending of a rail,
The two traveling members are arranged in front and rear with respect to the traveling direction, and are provided at positions facing the side surfaces of the rail between the two traveling members traveling on one rail. Each time the measurement distance, which is shorter than the distance between the traveling members, is moved, information corresponding to the distance information acquired by one or more measurement units that acquire distance information indicating the distance to the side surface of the rail is output. Program to function as an output unit.

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