JP2015190765A - Measurement system, measurement device, and measurement program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a measurement system capable of measuring the shape condition, as well as the curvature or the radius of curvature, of a cable even when the shape condition of the cable (a linear object to be measured) changes with the passage of time.SOLUTION: A measurement system 1 comprises a detection unit 10 for repeatedly detecting the positions of a plurality of different portions in a linear object 200 to be measured, and a calculation unit 30 for calculating the curvature or the radius of curvature of the linear object on the basis of the positions repeatedly detected by the detection unit.

Description

  The present invention relates to a measurement system, a measurement apparatus, and a measurement program.

A cable such as a communication cable or a power cable may have a curvature or a curvature radius defined for the purpose of ensuring a communication function and a power supply function. Even when such a cable is deformed by an earthquake or the like and the shape of the cable changes with time, it is required that a shape state that does not satisfy the regulations does not occur even for a moment.
Here, for the purpose of comparing and verifying the bending of the cable with the result comparison by simulation, an X-ray CT scanner is used to acquire a cross-sectional image of the stationary cable, and from the acquired cross-sectional image, A method for measuring the shape state of a cable is known (see Patent Document 1).

Japanese Patent No. 4285486

  However, in the conventional method, since the shape state of the cable that is stationary is measured, if the cable is deformed due to an earthquake or the like and the shape state of the cable changes over time, the shape state of the cable Could not be measured. Therefore, in the conventional method, when the shape of the cable changes with time, the curvature or the radius of curvature of the cable cannot be measured. Therefore, in the conventional method, it has not been possible to determine whether or not a shape state that does not satisfy the regulation has occurred even for a moment.

  The present invention has been made in view of such circumstances, and its purpose is to measure the shape state of the cable even when the shape state of the cable (linear measurement object) changes over time. Another object of the present invention is to provide a measurement system, a measurement apparatus, and a measurement program that can measure a curvature or a radius of curvature.

  This invention has been made to solve the above-described problem, based on a detection unit that repeatedly detects the position of a plurality of different sites in a linear measurement object, and a position that is repeatedly detected by the detection unit, And a calculation unit that calculates a curvature or a radius of curvature.

  The detection unit may repeatedly detect the positions of the plurality of different parts by executing motion capture related to the positions of the plurality of different parts in the measurement target.

  In addition, the detection unit is a plurality of position detection devices attached to different parts of the measurement target, and by acquiring the position information from a position detection device that outputs its own position information, It is characterized by repeatedly detecting the positions of different parts.

  The calculation unit may calculate the curvature or the radius of curvature based on the positions of the three different parts detected by the detection unit.

  In addition, the calculation unit extracts the positions of the three different portions from the positions detected by the detection unit based on the curvature or the curvature radius, and extracts the three different extracted positions. The curvature or the radius of curvature is calculated based on the position of the part.

  The calculation unit may calculate the curvature or the curvature radius based on the position detected at the same timing by the detection unit.

  In addition, the system described above includes a determination unit that determines whether the curvature or the radius of curvature calculated by the calculation unit satisfies a predetermined definition of the curvature or the curvature radius. To do.

  In the above-described system, when the determination unit determines that the curvature or the radius of curvature calculated by the calculation unit does not satisfy the rule, the curvature or the radius of curvature calculated by the calculation unit does not satisfy the rule. And a notification unit for notifying that.

  Further, the above-described system includes a control unit that stores a position repeatedly detected by the detection unit in a storage unit.

  In addition, when it is notified that an earthquake has occurred, the detection unit detects the position at an earlier time interval than before the notification that an earthquake has occurred.

  Also, a detection unit that repeatedly detects the positions of a plurality of different parts in the linear measurement target, and a calculation unit that calculates a curvature or a curvature radius based on the position repeatedly detected by the detection unit. It is the measuring device characterized by this.

  Further, the computer causes the detection unit to repeatedly detect the positions of a plurality of different parts in the linear measurement target, and causes the calculation unit to calculate the curvature or the curvature radius based on the position repeatedly detected by the detection unit. It is a measurement program.

  According to the present invention, the positions of a plurality of different parts in the linear measurement object are repeatedly detected, and the curvature or the radius of curvature is calculated based on the repeatedly detected positions. Thereby, even if it is a case where the shape of a linear measuring object (cable) changes with time, while measuring the shape of a linear measuring object (cable), a curvature or a curvature radius can be measured. . Therefore, it is possible to determine whether or not a shape state that does not satisfy the regulation has occurred even for a moment for a linear measurement object (cable).

It is a block diagram which shows the structure of the measurement system by one Embodiment of this invention. It is a block diagram which shows the structure of the cable 200 which is an example of a linear measuring object. 3 is a configuration diagram illustrating an example of information stored in a detection information storage unit 110. FIG. 4 is a configuration diagram illustrating an example of information stored in an extracted information storage unit 120. FIG. 4 is a configuration diagram illustrating an example of information stored in a history information storage unit 130. FIG. It is a flowchart which shows an example of operation | movement of a measurement system. It is a block diagram which shows the structure of the measurement system by 2nd Embodiment.

<First Embodiment>
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic block diagram showing the configuration of a measurement system 1 according to the first embodiment of the present invention. The measurement system 1 includes a measurement device 100 and a marker 300. The marker 300 is attached to the cable 200. The cable 200 is a linear measurement object that is measured by the measurement apparatus 100.

  Here, as an example, a case where the measurement system 1 detects the curvature or the radius of curvature of the cable 200 shown in FIG. 2 will be described. 2, the axis perpendicular to the paper surface of FIG. 2 is defined as the Z axis, and on the paper surface of FIG. 2, the two axes that are orthogonal to the Z axis and orthogonal to each other are described as the X axis and the Y axis. FIG. 2 illustrates the case where the cable 200 is arranged on a plane constituted by the X axis and the Y axis. The cable 200 to be measured by the measurement system 1 does not need to be arranged on a plane, and the cable 200 may be arbitrarily arranged in a three-dimensional space.

  In the cable 200 shown in FIG. 2, n (n is an arbitrary natural number) markers 300 are attached. Each of the n markers 300 is identified by identification information. In FIG. 2, only 16 markers 300 whose identification information values are m−8 to m + 7 (m is an arbitrary natural number) are illustrated. In this case, m is an arbitrary natural number larger than 9.

  As shown in FIG. 2, the marker 300 is attached at different positions in the longitudinal direction of the cable 200. Note that the markers 300 are not necessarily attached at equal intervals in the longitudinal direction of the cable 200.

  As will be described later, for example, the measuring apparatus 100 detects the position of each marker 300, and based on the detected positions of the marker 300 (m−1), the marker 300 (m), and the marker 300 (m + 1), the curvature κ ( m) or radius of curvature R (m) is calculated. Next, the measuring apparatus 100 determines whether or not the calculated curvature κ (m) or curvature radius R (m) satisfies a predetermined value for the curvature or curvature radius that is predetermined for the cable 200. To do.

  Next, the measuring apparatus 100 calculates the curvature κ (m + 1) or the curvature radius R (m + 1) similarly to the curvature κ (m) or the curvature radius R (m), and this curvature κ (m + 1) or the curvature radius R ( Also for m + 1), it is determined whether or not the predetermined value of the curvature or the radius of curvature for the cable 200 is satisfied. Hereinafter, the measuring apparatus 100 repeats the calculation and determination of the curvature κ or the curvature radius R over the longitudinal direction of the cable 200. Note that the measurement apparatus 100 calculates the curvature κ (m + 1) or the curvature radius R (m + 1) described above based on the detected positions of the marker 300 (m), the marker 300 (m + 1), and the marker 300 (m + 2).

  In this way, the measuring apparatus 100 determines whether or not the shape state of the cable 200 satisfies the predetermined value of the curvature or the radius of curvature that is predetermined for the cable 200 over the entire length of the cable 200. Can do.

  Thereafter, for each predetermined period, the measuring apparatus 100 detects the position of the marker 300 along the longitudinal direction of the cable 200, calculates the curvature κ or the curvature radius R, and calculates the calculated curvature κ or the curvature radius R. It is repeatedly determined whether or not satisfies the specified value.

  Thereby, the measuring apparatus 100 measures the shape of the linear measurement object (cable) and the curvature or the radius of curvature even when the shape of the linear measurement object (cable) changes with time. can do.

  In the description of the marker 300, when any one of the markers is specified and described, the identification information is attached and described. For example, when the value of the identification information of the marker 300 is “m”, it will be described as “marker 300 (m)”. When describing an arbitrary marker among the markers 300 or all the markers 300, the description will be made by referring to the marker 300.

  Further, in the case of describing the curvature radius R, when it is calculated based on a specific marker 300, information for identifying the marker 300 will be attached. For example, in the case of a radius of curvature based on the position of the marker 300 based on the identification information values “m−1”, “m”, and “m + 1”, it is referred to as “curvature radius R (m)”. . In the case of an arbitrary curvature radius that does not specify the marker, or in the case of all the curvature radii, the description will be made as “curvature radius R”. “Curvature κ” will be described using the same notation as “curvature radius R”.

  Returning to the description of FIG. 1, the configuration of the measuring apparatus 100 will be described. The measuring apparatus 100 includes a detection unit 10, a part extraction unit 20, a calculation unit 30, a determination unit 40, a notification unit 50, and a control unit 60. The measuring apparatus 100 includes a detection information storage unit 110, an extraction information storage unit 120, a history information storage unit 130, and a threshold information storage unit 140.

The detection unit 10 performs motion capture regarding the positions of a plurality of different parts in the measurement target. By this motion capture, the detection unit 10 detects the positions of a plurality of different parts in the linear measurement target. Here, the “position” detected by the detection unit 10 is “coordinates” in a three-dimensional space.
When a linear measurement target such as the cable 200 is two-dimensionally arranged, the detection unit 10 can be used as a “position” of a plurality of different parts in the linear measurement target in a two-dimensional space. “Coordinates” may be detected.
As an example of “a case where a linear measurement object such as the cable 200 is two-dimensionally arranged”, for example, the cable 200 is placed on the floor of a facility so that the cable 200 is displaced only two-dimensionally. If the direction of displacement is determined by how the cable 200 is laid (such as how to bend), the cable 200 is displaced by a device that controls the displacement of the cable 200. There are cases where the direction to do is determined.

  There are various types of motion capture, such as optical, mechanical, magnetic, and video. Any of these methods can be used as the motion capture of the present embodiment, and a plurality of methods can be used in combination.

  Here, for the sake of explanation, a case where optical motion capture is used will be described. In this case, the marker 300 is previously attached to a plurality of different parts in the measurement target, and the marker 300 is imaged by a plurality of cameras provided in the detection unit 10. And the detection part 10 detects the position of the marker 300 based on the marker 300 imaged with the some camera.

  Since each of the markers 300 can be identified, the markers 300 may be given different colors. In this case, the marker 300 is a reflective marker. In addition, when the marker 300 emits light by itself, each of the markers 300 can be identified. Therefore, each of the markers 300 may emit light with a different color or may emit light with a different light emission pattern. Good.

  For example, when the color of the marker 300 is different, the detection unit 10 includes a storage unit that associates the color of the marker 300 with identification information that identifies each of the markers 300. Then, the detection unit 10 detects the identification information of the marker 300 based on the identification information stored in the storage unit in association with the same color as the captured marker 300.

  In addition, when the marker 300 emits light with a different color or emits light with a different light emission pattern, the detection unit 10 can detect the color, light emission pattern, and identification information of the light emitted in the same manner as when the color of the marker 300 is different. And a storage unit that associates Then, the detection unit 10 reads identification information associated with the same emission color as that of the captured marker 300 from the storage unit, or is associated with the same emission pattern as that of the captured marker 300. The identification information of the marker 300 is detected by reading the existing identification information from the storage unit.

  In this way, the detection unit 10 detects the position of the marker 300 and also the identification information of the marker 300 based on the marker 300 imaged by a plurality of cameras.

  In addition, the detection unit 10 stores the identification information of the detected marker 300 in association with the position information indicating the position of the detected marker 300 in the detection information storage unit 110.

  FIG. 3 shows an example of identification information and position information stored in association with the detection information storage unit 110. As shown in FIG. 3, the detection information storage unit 110 stores identification information, three coordinates of coordinates 1, 2 and 3, and time information in association with each other. Coordinate 1, coordinate 2, and coordinate 3 are information indicating the position of the measured coordinate of the marker 300, and are coordinate values of the X axis, the Y axis, and the Z axis. The time information is information indicating the time when the three coordinates are measured.

  As illustrated in FIG. 3, the detection information storage unit 110 includes, for example, a value “1” of identification information, a value “X (1)” of coordinate 1, and a value “Y (1) of coordinate 2. ”, The value“ Z (1) ”of the coordinate 3 and the time information“ t1 ”are stored in association with each other. Further, the detection information storage unit 110 stores the identification information value “m−1”, the coordinate 1 value “X (m−1)”, the coordinate 2 value “Y (m−1)”, and the coordinate 3. Value “Z (m−1)” and time information “t1” are stored in association with each other. Further, the detection information storage unit 110 stores the identification information value “m”, the coordinate 1 value “X (m)”, the coordinate 2 value “Y (m)”, and the coordinate 3 value “Z (m)”. ) "And the time information" t1 "are stored in association with each other. In the detection information storage unit 110, the identification information value “m + 1”, the coordinate 1 value “X (m + 1)”, the coordinate 2 value “Y (m + 1)”, and the coordinate 3 value “Z (m + 1)”. ) "And the time information" t1 "are stored in association with each other.

  Thus, the detection information storage unit 110 stores n pieces of identification information, coordinates 1, coordinates 2, and coordinates 3 in association with the same time information. FIG. 3 illustrates only the case where the time information is t1 as the information stored in the detection information storage unit 110, but the detection information storage unit 110 includes, for example, information when the time information is t2, the time Information such as information when the information is t3,... May be stored as in the case where the time information is t1.

  Note that the time information described above may be time measured by a time measuring unit provided in the measurement apparatus 100, or may be time information received by the measurement apparatus 100 from another apparatus. The detection unit 10 described above associates the identification information of the detected marker 300 with the position information indicating the position of the detected marker 300, and further stores the time information or the received time information in the detection information storage unit 110 in association with each other. .

  The extraction information storage unit 120 extracts identification information and position information used for calculating the curvature or the radius of curvature from the identification information and the position information stored in association with the detection information storage unit 110. The extraction conditions for this are stored in advance.

  Next, an example of the extraction condition stored in the extraction information storage unit 120 will be described with reference to FIG. As illustrated in FIG. 4, the extraction information storage unit 120 stores an extraction condition number, identification information 1, identification information 2, and identification information 3 in advance in association with each other. The extraction condition number is identification information for identifying the extraction condition. Each of the identification information 1, the identification information 2, and the identification information 3 is the same information as the identification information described with reference to FIG.

  For example, in the extraction information storage unit 120, the value “1” of the identification information 1, the value “2” of the identification information 2, and the value “3” of the identification information 3 are associated with the value “1” of the extraction condition number. Are stored in association with each other.

  Further, the extracted information storage unit 120 associates the value “m−1” of the identification information 1, the value “m” of the identification information 2 and the value “m + 1” of the identification information 3 in association with the value “m” of the extraction condition number. "Is stored in association with each other. Based on this extraction condition, as will be described later, the calculation unit 30 sets the positions of the identification information m-1, the identification information m, and the identification information m + 1 shown in FIG. 3 (that is, coordinates 1, 2 and 3). Based on this, the curvature κ (m) or the curvature radius R (m) is calculated.

  The extraction information storage unit 120 stores in advance “n−2” similar extraction conditions from the value “2” to the value “n−1” of the extraction condition number.

  The part extraction unit 20 uses the identification information and the position information based on the extraction condition stored in the extraction information storage unit 120 from the identification information and the position information stored in association with the detection information storage unit 110. And extract.

  For example, the part extraction unit 20 reads the extraction condition of the extraction condition number value “m” as the extraction condition stored in the extraction information storage unit 120. As described with reference to FIG. 4, the extraction condition number value “m” includes the identification information 1 value “m−1”, the identification information 2 value “m”, and the identification information 3 The value “m + 1” is associated and stored.

Next, based on the value “m−1” of the extraction condition identification information 1 of the read extraction condition number value “m”, the part extraction unit 20 matches the value of the identification information “ The values of coordinates 1, 2, and 3 associated with “m−1” are read from the detection information storage unit 110.
That is, the part extracting unit 20 associates the value “X (m−1)” of the coordinate 1 and the value “Y (m−1)” of the coordinate 2 associated with the value “m−1” of the identification information, The value “Z (m−1)” of coordinate 3 is read from the detection information storage unit 110.

Similarly to the read extraction condition identification information 1, the part extraction unit 20 is associated with the identification information values “m” and “m + 1” based on the read extraction condition identification information 2 and the identification information 3. The coordinates 1, 2, and 3 are read from the detection information storage unit 110.
That is, the part extraction unit 20 associates the value “X (m)” of the coordinate 1, the value “Y (m)” of the coordinate 2, and the value “Z” of the coordinate 3 associated with the value “m” of the identification information. (M) ”is read from the detection information storage unit 110.
Further, the part extracting unit 20 associates the identification information value “m + 1”, the coordinate 1 value “X (m + 1)”, and the coordinate 2 value “Y (m + 1) associated with the identification information value“ m + 1 ”. ) ”And the value“ Z (m + 1) ”of the coordinate 3 are read from the detection information storage unit 110.

  Thereafter, the part extraction unit 20 coordinates 1 and coordinates associated with the identification information values “m−1”, “m”, and “m + 1” read based on the extraction condition of the extraction condition number value “m”. The values 2 and 3 are output to the calculation unit 30.

  The calculation unit 30 calculates a curvature or a radius of curvature based on the identification information and the position information extracted by the part extraction unit 20.

  For example, the calculation unit 30 performs the following based on the coordinates 1, 2 and 3 associated with the identification information values “m−1”, “m” and “m + 1” extracted by the part extraction unit 20. The radius of curvature R (that is, the radius R of the circumscribed circle) is calculated using Equation 1 below.

R = (a × b × c) / ((a + b + c) (-a + b + c) (a-b + c) (a + bc)) ^1/2 (Formula 1)

  In Equation 1, a, b, and c are the lengths of the three sides of the triangle with the coordinates 1, 2 and 3 extracted by the part extracting unit 20 as vertices. For example, the length of side a is the distance between coordinate 1 and coordinate 2, the length of side b is the distance between coordinate 2 and coordinate 3, and the length of side c is the coordinate 3 and coordinate. It is the distance between 1.

  In the case of the identification information values “m−1”, “m”, and “m + 1” read based on the extraction condition of the extraction condition number value “m” described above, the calculation unit 30 calculates the length of the side a. Then, the length of the side b and the length of the side c are calculated by the following formulas 2 to 4.

a = (((X (m)-X (m-1)) ² + ((Y (m)-Y (m-1)) ² + ((Z (m)-Z (m-1)) ^{2 1/2} (Formula 2)
b = (((X (m + 1)-X (m)) ² + ((Y (m + 1)-Y (m)) ² + ((Z (m + 1)-Z (m)) ^{2 1/2} (Formula 3)
c = (((X (m-1)-X (m + 1)) ² + ((Y (m-1)-Y (m + 1)) ² + ((Z (m-1)-Z ( m + 1)) ² ) ^1/2 (Formula 4)

Further, the calculation unit 30 calculates the curvature κ by the following equation 5.

κ = 1 / R (Formula 5)

  In this way, the calculation unit 30 calculates a curvature or a curvature radius based on the position detected by the detection unit 10. The calculation unit 30 calculates a curvature or a radius of curvature based on the positions of three different parts detected by the detection unit 10.

  Note that the calculation unit 30 “calculates curvature or radius of curvature” means “calculate only curvature”, “calculate only curvature radius”, or “curvature and radius of curvature” of the curvature or radius of curvature. Both are calculated ".

  The threshold information storage unit 140 stores in advance a prescribed value of curvature or curvature radius. The specified value of the curvature or the radius of curvature may be a specified value specified for the cable 200, for example. The specified value of the curvature or the radius of curvature may be the maximum value of the curvature or the minimum value of the radius of curvature recommended or specified by the manufacturer of the cable 200. The specified value of the curvature or the radius of curvature may be determined by experiment, simulation, or experience based on the cable material, structure, rigidity, required communication quality, required power transmission quality, or a combination thereof.

  The determination unit 40 determines whether the “curvature or radius of curvature” calculated by the calculation unit 30 satisfies the “specified value of curvature or curvature radius” read from the threshold information storage unit 140. That is, the determination unit 40 determines whether or not the curvature calculated by the calculation unit 30 is smaller than a predetermined curvature threshold, or the curvature radius calculated by the calculation unit 30 is a predetermined curvature radius threshold. It is judged whether it is larger than.

  By the way, as described above, the calculation unit 30 calculates one or both of “curvature” and “curvature radius”, but the determination unit 40 calculates “curvature” or “curvature” calculated by the calculation unit 30. In accordance with “radius”, it may be determined whether one or both of “curvature” and “curvature radius” satisfy a specified value.

When the determination unit 40 determines that the curvature or curvature radius calculated by the calculation unit 30 does not satisfy the specified value, the notification unit 50 confirms that the curvature or curvature radius calculated by the calculation unit 30 does not satisfy the specified value. Notice.
That is, when the determination unit 40 determines that the curvature calculated by the calculation unit 30 is smaller than a predetermined curvature threshold, or the curvature radius calculated by the calculation unit 30 is a predetermined curvature radius threshold. When the determination unit 40 determines that the value is larger than the value, the notification unit 50 notifies that the curvature or the radius of curvature calculated by the calculation unit 30 does not satisfy the specified value.

  The notification unit 50 may notify by sound through a sound output unit such as a siren as a notification method, or may notify by light by turning on a light emitting unit such as a rotating lamp, or may be a character, symbol, Alternatively, it may be notified by displaying an icon or the like on a display unit such as a monitor, may be notified by outputting a control signal to a preset server or host control device, or preset. You may notify by sending mail to the mail address currently carried out.

  The history information storage unit 130 stores the extraction condition number, the curvature or the radius of curvature, and the time information in association with each other. FIG. 5 is a diagram illustrating an example of information stored in the history information storage unit 130. The extraction condition number is the same information as the extraction condition number described with reference to FIG. The curvature or radius of curvature is the curvature or radius of curvature calculated by the calculation unit 30. The time information is the same information as the time information described with reference to FIG.

  As an example, every time the calculation unit 30 calculates the curvature or the radius of curvature, the “extraction condition number” used by the part extraction unit 20 to calculate the curvature or the radius of curvature and the calculation unit 30 calculates “ The control unit 60 stores the “curvature or curvature radius” in association with the coordinates extracted by the part extraction unit 20 and the “time information” stored in the detection information storage unit 110 in the history information storage unit 130. .

  The control unit 60 controls each unit (each configuration) included in the measurement apparatus 100.

  By the way, even if the distance between the positions of different portions in the cable 200 detected by the detection unit 10 is too short or too long, an appropriate curvature or radius of curvature may not be calculated.

  For example, when the cable 200 has high rigidity and does not refract very much, if the distance between the three markers 300 used for calculation by the calculation unit 30 is too close, the positional relationship between the three markers 300 is almost a straight line. . In this case, the curvature calculated by the calculation unit 30 is a value close to 0, and the curvature radius is a value close to infinity. In the case of such calculation, the accuracy is lowered. When the rigidity of the cable 200 is high and it is not refracted in this way, the distance between the three markers 300 used for calculation by the calculation unit 30 is set longer than when the rigidity of the cable 200 is low. Is good.

  On the other hand, when the cable 200 has low rigidity and is easily refracted, if the distance between the three markers 300 used by the calculation unit 30 for calculation is too far, the cable 200 is moved a plurality of times between the three markers 300. Can be refracted. In this case, the curvature or the radius of curvature calculated by the calculation unit 30 is not an index that appropriately indicates the shape state of the cable 200. In this way, when the cable 200 is low in rigidity and easily refracted, the distance between the three markers 300 used for calculation by the calculation unit 30 is shortened as compared with the case where the cable 200 is high in rigidity. Is good.

  As described above, the distance between the three markers 300 used by the calculation unit 30 for the calculation is determined based on the rigidity of the cable 200. That is, the distance between the three markers 300 used for calculation by the calculation unit 30 is longer when the rigidity of the cable 200 is high than when the rigidity of the cable 200 is low.

  Based on the rigidity of the cable 200, the extraction information storage unit 120 stores the value of the identification information 1, the value of the identification information 2, and the identification information 3 appropriate for calculating the curvature or the radius of curvature of the cable 200. The extraction condition associated with the value of is stored in advance. Then, based on such extraction conditions, the part extraction unit 20 extracts the positions of three different parts. That is, the part extraction unit 20 extracts the positions of three different parts from the positions detected by the detection unit 10 based on the rigidity of the cable 200.

  Then, based on the positions of three different parts extracted based on the rigidity of the cable 200, the calculation unit 30 calculates the curvature or the radius of curvature. Thereby, the calculation unit 30 can calculate “curvature or radius of curvature” as an index that appropriately indicates the shape state of the cable 200.

In general, there is a correlation between the rigidity of the cable 200 and the specified value (threshold value) of the curvature or the radius of curvature of the cable 200.
Therefore, “the part extracting unit 20 extracts the positions of three different parts from the positions detected by the detecting unit 10 based on“ the rigidity of the cable 200 ”” means “the part. The extraction unit 20 is synonymous with “the position of three different parts is extracted from the positions detected by the detection unit 10 based on the“ specified value (threshold value) of curvature or curvature radius ””. is there.

  Further, “the calculation unit 30 calculates a curvature or a radius of curvature based on the positions of three different portions extracted based on“ the rigidity of the cable 200 ”” described above means that ““ the curvature or the radius of curvature ”. The calculation unit 30 calculates the curvature or the radius of curvature based on the positions of three different parts extracted based on the “specified value (threshold value)”.

  The distance between the three markers 300 used for calculation by the calculation unit 30 may be determined based on experiments or simulations based on the cables 200 having the same physical properties. Physical properties include rigidity, material, thickness, and structure.

Further, in FIG. 4 described above, the case where three consecutively arranged markers 300 are extracted as the extraction condition is illustrated, but the extraction condition is not limited to this.
As an extraction condition, three markers arranged in succession may be extracted by skipping one. For example, as an extraction condition, marker 300 (1), marker 300 (3), and marker 300 (5) are extracted, and then marker 300 (2), marker 300 (4), and marker 300 (6) are extracted. It may be extracted.
Further, as an extraction condition, three markers arranged in succession may be extracted such that the skipping method is different on one side and the other side. For example, as an extraction condition, marker 300 (1), marker 300 (2), and marker 300 (4) are extracted, and then marker 300 (2), marker 300 (3), and marker 300 (4) are extracted. May be extracted.
The extraction condition may be determined in this manner based on the above-described “stiffness of the cable 200” or “the specified value (threshold value) of the curvature or the radius of curvature”.

  Next, an operation as an example of the measuring apparatus 100 will be described with reference to FIG. The operation shown in FIG. 6 is executed at regular intervals.

  First, the detection part 10 performs a detection process (step S10). That is, the detection unit 10 performs motion capture regarding the positions of a plurality of different parts in the measurement target. Then, the detection unit 10 stores the identification information of the detected marker 300, the position information indicating the position of the detected marker 300, and the time information or the received time information in association with each other and stores them in the detection information storage unit 110.

  Next, the part extraction part 20 performs a part extraction process (step S20). That is, the part extraction unit 20 selects the identification information based on the extraction condition stored in the extraction information storage unit 120 from the identification information and the position information stored in association with the detection information storage unit 110. Extract location information.

  In this step S20, the part extraction unit 20 is the latest time information stored in the detection information storage unit 110, and the identification information and the position information associated with the time information at substantially the same timing, Based on the extraction conditions stored in the extraction information storage unit 120, the detection information is stored in the detection information storage unit 110. Thereby, in subsequent step S30, the calculation unit 30 can calculate the curvature or the radius of curvature based on the position detected by the detection unit 10 at the same timing.

  Next, the calculation unit 30 executes a calculation process (step S30). That is, the calculation unit 30 calculates a curvature or a radius of curvature based on the identification information and the position information extracted by the part extraction unit 20 in step S20.

  Next, the determination part 40 performs a determination process (step S40). That is, the determination unit 40 determines whether or not the curvature or curvature radius calculated by the calculation unit 30 in step S30 satisfies the specified value of the curvature or curvature radius read from the threshold information storage unit 140.

  When the determination result of step S40 does not satisfy the prescribed value of the curvature or curvature radius calculated by the calculation unit 30 (when the determination result of step S40 is NO), the notification unit 50 executes notification processing (step S50). ). That is, the notification unit 50 notifies that the curvature or the curvature radius calculated by the calculation unit 30 does not satisfy the specified value.

  On the other hand, if the determination result in step S40 indicates that the curvature or curvature radius calculated by the calculation unit 30 satisfies the specified value (if the determination result in step S40 is YES), or subsequent to step S50, the control unit 60 Then, it is determined whether or not all the parts have been determined (step S60).

  As a method of “determining whether all parts have been subjected to the determination process” in step S60, for example, the control unit 60, for all the extraction conditions stored in the extraction information storage unit 120 shown in FIG. It is determined whether the extraction process in step S20, the calculation process in step S30, or the determination process in step S40 has been executed.

  When the determination result of step S60 is “not all region determination processes” (when the determination result of step S60 is NO), the control unit 60 repeats the processing from step S20. In step S20, the part extraction unit 20 selects an extraction condition that has not yet been extracted in the “current process” from the extraction conditions stored in the extraction information storage unit 120. Based on the extracted conditions, the identification information, the position information, and the detection information storage unit 110 are extracted. Thereafter, the processing from step S30 is repeated. Here, the “current process” is the process described with reference to FIG. 6 that is executed at regular intervals.

  On the other hand, when the determination result of step S60 is “determination processing for all parts” (when the determination result of step S60 is YES), the control unit 60 ends the “current process”. Thereafter, the control unit 60 repeatedly executes the processes from step S10 at regular intervals. That is, the control unit 60 repeatedly executes the above-described process of FIG. 6 at regular intervals.

  For example, between step 30 and step S40, the control unit 60 is used by the region extraction unit 20 to calculate the "curvature or curvature radius" calculated by the calculation unit 30 and the curvature or curvature radius. The “extraction condition number” and the “time information” stored in the detection information storage unit 110 in association with the coordinates extracted by the part extraction unit 20 may be stored in the history information storage unit 130 in association with each other.

  In addition, the timing which the control part 60 memorize | stores in the history information storage part 130 is not restricted between step 30 and step S40, The control part 60 makes history information the timing when the determination result of step S60 is YES. The data may be stored together in the storage unit 130, or at another timing.

  With the configuration and operation described above, the measuring apparatus 100 repeatedly detects the positions of a plurality of different parts in the cable 200 over time, and calculates the curvature or the radius of curvature based on the repeatedly detected positions. . Thereby, even if it is a case where the shape of the cable 200 changes with progress of time, while measuring the shape of the cable 200, a curvature or a curvature radius can be measured. Therefore, the measuring apparatus 100 can determine whether or not a shape state that does not satisfy the regulation has occurred in the cable 200 even for a moment.

  Here, for example, the shape of the cable 200 is picked up as a photograph or a video, and the curvature or the radius of curvature of the cable 200 is measured by fitting a circular arc by a human (measurer) hand to the picked up photo or video. In the case of the measuring method, there is a risk that the measurement person may vary and the accuracy may be lowered due to the sharpness of the photograph or the video. Further, in such a measuring method, it takes time to measure the curvature or radius of curvature of the cable 200, and it is impossible to measure the time series of the curvature or radius of curvature in real time.

  On the other hand, the measuring apparatus 100 detects the position information of the cable 200 and calculates a curvature or a radius of curvature based on the detected position information. Therefore, the curvature or the radius of curvature as a quantitative index for the cable 200 can be measured without causing variation by the measurer. It is also possible to measure the time series of curvature or curvature radius in real time.

  Further, the measuring apparatus 100 stores information (identification information, coordinates 1, coordinates 2, and coordinates 3) indicating the shape state of the cable 200 in the detection information storage unit 110 in association with time information. Therefore, an administrator who manages the cable 200 can check the history of changes in the shape state of the cable 200 by referring to the information stored in the detection information storage unit 110.

  In addition, the measuring apparatus 100 stores the calculated curvature or curvature radius, the extraction condition number, and time information in the history information storage unit 130 in association with each other. Therefore, the administrator can confirm the history of the change in “curvature or radius of curvature” as an index of the change in the shape state of the cable 200 by referring to the information stored in the history information storage unit 130. Further, an administrator who manages the cable 200 refers to information stored in the history information storage unit 130 to calculate statistical information such as the maximum value, the minimum value, and the average of the “curvature or curvature radius”. It is also possible.

  In addition, the history information stored in the detection information storage unit 110 or the history information stored in the history information storage unit 130 can be used as a reference when laying the cable in another place, and can be calculated. It can also be used when the distance between the three markers 300 used by the unit 30 for calculation is determined. This makes it possible to lay cables with appropriate physical properties such as rigidity when laying cables at other locations, attaching markers to the cables at appropriate placement intervals, and using curvature or curvature. It is also possible to set an extraction condition between markers suitable for calculating the radius.

Second Embodiment
In the first embodiment described above, as a method for detecting the positions of a plurality of different parts in the linear measurement target, the detection unit 10 performs a motion capture relating to the positions of the plurality of different parts in the measurement target. The case of was explained.
However, the method in which the detection unit 10 detects the positions of a plurality of different parts in the linear measurement target is not limited to this. In the second embodiment, a case will be described in which the detection unit 10 uses a GPS (Global Positioning System) as a method for detecting the positions of a plurality of different parts in a linear measurement target.

  FIG. 7 is a schematic block diagram showing the configuration of the measurement system 2 according to the second embodiment of the present invention. The measurement system 2 includes a measurement device 101 and a GPS terminal 400 (position detection device). The GPS terminal 400 is attached to the cable 200.

  As shown in FIG. 7, in the second embodiment, the marker 300 described with reference to FIG. 1 or FIG. 2 in the first embodiment is changed to a GPS terminal 400. That is, a plurality of GPS terminals 400 are attached to the cable 200. The detection unit 10 is changed to a detection unit 11.

  The measurement device 100 and the measurement device 101 have different configurations between the detection unit 10 and the detection unit 11, but the other configurations are the same. Therefore, in FIG. 7, the same components as those in FIG.

  Each of the GPS terminals 400 includes, for example, a position detection unit 410, a communication unit 420, a power storage unit 430, and an identification information storage unit 440. Each of the GPS terminals 400 can be identified by identification information.

The position detection unit 410 receives signals transmitted from several GPS satellites, and detects the position of the position detection unit 410 itself based on the received signals.
The identification information storage unit 440 stores identification information for identifying the own GPS terminal 400.

  The communication unit 420 transmits the position detected by the position detection unit 410 in association with the position information and the identification information read from the identification information storage unit 440. The communication method of the communication unit 420 is arbitrary, and may be wireless communication or wired communication.

  The power storage unit 430 includes a primary battery or a secondary battery. For each component included in the GPS terminal 400 such as the position detection unit 410, the communication unit 420, or the identification information storage unit 440, the primary battery or the secondary battery is provided. The power stored in the secondary battery is supplied. Note that when the power storage unit 430 includes a secondary battery, the GPS terminal 400 may include a power storage control unit that stores the power received by wireless power feeding in the secondary battery of the power storage unit 430.

  With the above configuration, each of the plurality of GPS terminals 400 attached to the cable 200 transmits its own positional information and identification information in association with each other.

  The detection unit 11 of the measuring apparatus 101 receives its own position information and identification information transmitted in association with each of the plurality of GPS terminals 400. Thereby, the detection part 11 of the measuring apparatus 101 can detect the position of several different site | parts in the cable 200 similarly to the case of 1st Embodiment. Subsequent processing and the like are the same in the second embodiment and the first embodiment.

  Also according to the second embodiment, the same operations and effects as those of the first embodiment can be achieved.

Each of the GPS terminals 400 includes a timekeeping unit that measures time based on signals received from several GPS satellites. The communication unit 420 is associated with time information, position information, and identification information timed by the timekeeping unit. You may send out via. Then, the detection unit 11 of the measurement apparatus 101 may receive time information, position information, and identification information in association with each other from the communication unit 420 of the GPS terminal 400.
Thereby, the detection part 11 of the measuring apparatus 101 can detect the position of the several different site | part in the cable 200 similarly to the case of 1st Embodiment, and time is measured by receiving time information. can do.

<Third Embodiment>
In the first embodiment or the second embodiment described above, based on the marker 300 attached to the cable 200 or the GPS terminal 400 attached to the cable 200, the detection unit 10 or the detection unit 11 includes a plurality of cables in the cable 200. A method for detecting the position of a different part has been described. However, the method of detecting the positions of a plurality of different parts in the cable 200 is not limited to this.

  For example, the detection unit corresponding to the detection unit 10 or the detection unit 11 irradiates the cable 200 with infrared rays having a specific pattern, receives the irradiated infrared rays, and based on the received infrared rays, the cable The position of a plurality of different parts in 200 is detected.

  The irradiated infrared pattern is distorted by the shape of the object such as the cable 200, and the pattern spreads more greatly as the distance from the detection unit increases. By statistically analyzing these pieces of information, the detection unit detects the positions of a plurality of different parts in the cable 200. According to this method, the detection unit can detect the positions of a plurality of different parts in the cable 200 without attaching a member or device for detection such as the marker 300 or the GPS terminal 400 to the cable 200.

  Also according to the third embodiment, the same operations and effects as those of the first embodiment or the second embodiment can be achieved.

Here, “detection unit” corresponds to “detection unit 10” in the first embodiment, “detection unit 11” in the second embodiment, or “detection unit 10 or detection unit 11” described in the third embodiment. In the following description, it will be referred to as a “detection unit”.
Further, in the following description without distinguishing between “measuring device 100” in the first embodiment, “measuring device 101” in the second embodiment, and “measuring device” in the third embodiment, “measurement” This will be described as “device”.

<Fourth embodiment>
In the above description, it has been described that “the operation shown in FIG. 6 is executed at regular intervals”, but the present invention is not limited to this.

  For example, the operation illustrated in FIG. 6 may be performed in a shorter period after the earthquake bulletin is notified from the Japan Meteorological Agency or the like than before the earthquake bulletin is notified. Or based on the earthquake early warning notified from the Japan Meteorological Agency etc., the operation | movement shown in FIG. 6 may be operate | moved in a period shorter than before this period during the period before and behind the arrival of an earthquake. That is, the period during which the operation shown in FIG. 6 is repeatedly executed (the time interval between the execution of the operation shown in FIG. 6 and the next execution) may be changed based on the earthquake early warning notified from the Japan Meteorological Agency or the like.

  For example, the measuring device is provided with a receiving unit capable of receiving notification of earthquake early warning. The control unit 60 performs the operation shown in FIG. 6 every hour before the earthquake early warning is notified (before the receiving unit receives the earthquake early warning notification), and after the earthquake early warning is notified (earthquake After the notification of the breaking news is received by the receiving unit), the operation shown in FIG. 6 is executed every second. As described above, when an earthquake occurs based on the earthquake early warning received by the receiving unit, the control unit 60 performs the operation illustrated in FIG. 6 at an earlier time interval than before the occurrence of the earthquake. Then, the control unit 60 performs the process every hour on the condition that the notification process is not executed in step S50 in FIG. 6 after a predetermined time (for example, 1 hour) has elapsed since the earthquake arrived. The operation shown in FIG. 6 is executed.

  In this way, when it is notified that an earthquake has occurred, the detection unit detects the position at a time interval earlier than before the notification that the earthquake has occurred, and the calculation unit 30 calculates the curvature or the radius of curvature. Then, the determination unit 40 may determine whether the curvature or the radius of curvature calculated by the calculation unit 30 satisfies a specified value.

Further, the period in which the operation shown in FIG. 6 is repeatedly executed may be changed based on information (for example, magnitude value) indicating the magnitude of the earthquake included in the earthquake early warning notified from the Japan Meteorological Agency or the like. For example, when the magnitude value is large, the control unit 60 compares “the detection unit detects the position and the calculation unit 30 calculates the curvature or the radius of curvature” at an earlier time interval than when the magnitude value is small. The determination unit 40 may perform control such as “determine whether the curvature or the radius of curvature calculated by the calculation unit 30 satisfies a specified value”.
As a result, even when the magnitude value is large and the displacement per unit time generated in the cable 200 is large, the measuring apparatus 100 appropriately measures the shape of the cable 200 and also has a curvature or a radius of curvature. Can be measured. Therefore, it can be determined whether or not the cable 200 has a shape state that does not satisfy the regulations even for a moment.

  Moreover, the control part 60 may start the operation | movement shown in FIG. 6 according to the earthquake early warning notified. For example, the control unit 60 does not perform the operation shown in FIG. 6 before the earthquake early warning is notified. Or the control part 60 has started the operation | movement shown in FIG. 6 by the timing of a periodic test | inspection before earthquake early warning is notified. And the control part 60 repeats the operation | movement shown in FIG. 6, while starting the operation | movement shown in FIG. 6 according to the earthquake early warning being notified.

  Thus, when it is notified that an earthquake has occurred, the detection unit detects the position, the calculation unit 30 calculates the curvature or the radius of curvature, and the determination unit 40 calculates the curvature or the radius of curvature calculated by the calculation unit 30. It may be determined whether or not satisfies a specified value.

  By doing so, when the cable 200 is displaced as in the case of an earthquake and the curvature or the radius of curvature of the cable 200 may exceed a specified value, the measuring device may inspect the cable 200 or A record of the displacement of the cable 200 can be left, and if the displacement of the cable 200 other than during an earthquake is difficult to occur, the frequency of inspecting or leaving a record of the displacement can be lowered. That is, the power required for inspection can be reduced, and the amount of data to be recorded can be reduced.

  The “earthquake early warning” described above is “earthquake early warning” regarding the place where the cable 200 is laid out. For example, the “earthquake early warning” refers to “earthquake early warning” in which the cable 200 may be displaced based on the location of the earthquake (seismic center) and the magnitude (magnitude) of the earthquake.

In the above description, the case where “the period during which the operation shown in FIG. 6 is repeatedly executed is changed based on the earthquake early warning notified from the Japan Meteorological Agency”, that is, “the control unit 60 of the measurement device receives When the earthquake occurs based on the earthquake early warning received by the department, the operation shown in FIG. 6 is executed at an earlier time interval than before the earthquake occurred. ”However, the case is not limited to this. Absent.
For example, “the period in which the operation shown in FIG. 6 is repeatedly executed” may be changed based on a detection result by a seismometer installed in a building where the cable 200 is laid.
For example, it is assumed that a seismometer is installed in a building where the cable 200 is laid. Furthermore, it is assumed that the measuring device includes an acquisition unit that acquires data related to vibration detected by the seismometer.
When the control unit 60 of the measuring apparatus determines that an earthquake has occurred based on the data acquired from the seismometer, the control unit 60 performs the operation illustrated in FIG. 6 at an earlier time interval than before determining that an earthquake has occurred. May be.
Also by the control by the control unit 60 based on such a “seismic meter”, the same effect as in the case of the control by the control unit 60 based on the “earthquake early notice notified from the Japan Meteorological Agency” described above can be obtained.

Further, when it is determined that an earthquake has occurred based on the data acquired from the seismometer, the control unit 60 may start the operation illustrated in FIG.
In addition, the control unit 60 determines, based on the data acquired from the seismometer, that “when the vibration is large, the detection unit detects the position and the calculation unit 30 at an earlier time interval than when the vibration is small. May calculate a curvature or a radius of curvature, and the determination unit 40 may perform control such as “determines whether the curvature or the radius of curvature calculated by the calculation unit 30 satisfies a specified value”.
Also by the control by the control unit 60 based on such a “seismic meter”, the same effect as in the case of the control by the control unit 60 based on the “earthquake early notice notified from the Japan Meteorological Agency” described above can be obtained. In addition, the detection method of an earthquake or a vibration is not restricted above, Arbitrary methods may be sufficient.

<Fifth Embodiment>
In 4th Embodiment mentioned above, the period when the operation | movement shown in FIG. 6 was repeatedly performed demonstrated the case where it was determined based on the notification of earthquake early warning from the Meteorological Agency etc. However, the period in which the operation illustrated in FIG. 6 is repeatedly executed may be changed based on the curvature or the radius of curvature detected by the measurement apparatus 100.

  For example, if the detected curvature or curvature radius of the cable 200 has no margin compared to the specified value of the curvature or curvature radius, the control unit 60 performs the operation shown in FIG. The period of repeated execution may be shortened.

For example, the threshold information storage unit 140 further stores a first threshold having a value smaller than the curvature threshold or a second threshold having a value larger than the curvature radius threshold.
And the control part 60 repeatedly performs the process of FIG. 6 for every 1st period. Then, following step S30 in FIG. 6, the control unit 60 determines whether the curvature calculated in step S30 is larger than the first threshold or whether the curvature radius calculated in step S30 is smaller than the second threshold. Determine whether or not.
When it is determined that the curvature calculated in step S30 is larger than the first threshold value, or when it is determined that the curvature radius calculated in step S30 is smaller than the second threshold value, the control unit 60 is more than the first period. The process of FIG. 6 is repeatedly executed for each second period having a short time interval.
Thereafter, when the control unit 60 determines that the curvature calculated in step S30 is not larger than the first threshold value, or when it is determined that the curvature radius calculated in step S30 is not smaller than the second threshold value, the control unit 60 60 repeats the process of FIG. 6 for each first period. Thereafter, the control unit 60 repeats these processes.

In this way, the control unit 60 determines that the detected curvature or radius of the cable 200 has no margin in comparison with the specified value of the curvature or curvature radius, as shown in FIG. The period during which the operation shown is repeatedly executed is shortened.
According to the fifth embodiment described above, the same effect as that of the fourth embodiment can be obtained.

<Sixth Embodiment>
In the above description of the first embodiment, the description has been given assuming that “the control unit 60 determines whether or not all the parts have been determined (step S60)” (see step S60 in FIG. 6). However, it is not limited to this.
For example, “all parts” may not be “all parts”. Here, the “specific part” is, for example, “all parts in the section set arbitrarily” by the administrator.
For example, in FIG. 5, when the curvature radius R (n−1) to the curvature radius R (n−1) is the curvature radius for “all parts”, the curvature radius R of “only a specific part” is the curvature radius R (p ) To the radius of curvature R (p + q). However, p is a natural number of 2 or more, and q is an arbitrary natural number of (n-1-p) or less.

For example, the extraction information storage unit 120 stores “extraction conditions only” corresponding to “a specific part” in the cable 200, that is, “all parts in an arbitrarily set section” in the cable 200. And
In step S60 of FIG. 6, when the control unit 60 “determines whether or not all the parts have been determined (step S60)”, the control unit 60 is stored in the extracted information storage unit 120. It is determined whether or not the extraction process in step S20, the calculation process in step S30, and the determination process in step S40 have been executed for all the extraction conditions corresponding to the “specific part”.
In this manner, in step S60 of FIG. 6, “the control unit 60 may determine whether or not all the specific parts have been determined (step S60)”.
Here, the cable 200 may have a portion where deformation is likely to occur and a portion where deformation is difficult to occur due to the laying.
In such a case, it is possible to associate “all parts within an arbitrarily set section” with “parts where deformation is likely to occur”. For example, the extraction information storage unit 120 stores only extraction conditions corresponding to “parts that are likely to be deformed”.
As a result, the measuring apparatus performs calculation, determination, and recording of the curvature or the radius of curvature only for “the part where deformation is likely to occur”. Accordingly, it is possible to reduce the number of times of calculating the curvature or the radius of curvature, reduce the number of determination processes, and reduce the number of recording processes. Furthermore, the power required for these can be reduced, and the amount of data to be recorded can be reduced.

Note that “extraction conditions” corresponding to “parts” in the cable 200 and identification information may be associated with each other and stored in the extraction information storage unit 120. This “identification information” is information indicating whether or not extraction based on “extraction conditions” is executed.
And the part extraction part 20 extracts identification information and position information from the detection information storage part 110 based on the extraction conditions linked | related with the identification information which shows performing extraction.
In step S60 of FIG. 6, the “control unit 60” determines whether or not the extraction has been executed based on “all extraction conditions” associated with the identification information indicating that the extraction is to be executed. .
Even in this way, in step S60 of FIG. 6, the control unit 60 can “determine whether or not all the specific parts have been subjected to the determination process”.

In the above description, the “extraction condition” stored in the extraction information storage unit 120 in order to “determine whether or not the control unit 60 has determined all the specific parts” in step S60 of FIG. However, the present invention is not limited to this.
For example, the marker 300 (see the first embodiment) or the GPS terminal 400 (see the second embodiment) may be attached to “only a specific part” of the cable 200.
This also achieves the same effect as in the case where “extraction condition storage unit 120 stores“ extraction conditions only ”corresponding to“ all parts in an arbitrarily set section ”in cable 200”. It is done.

<Modification>
In the above description, the case where the part extracting unit 20 extracts the positions of three different parts from the positions detected by the detecting unit based on the curvature or curvature radius threshold has been described. The calculation unit 30 may include 20 functions. Alternatively, the part extraction unit 20 and the calculation unit 30 may be integrally configured as the calculation unit 30.
That is, the calculation unit 30 extracts the positions of three different parts from the positions detected by the detection part based on the threshold value of the curvature or the radius of curvature, and based on the extracted positions of the three different parts. The curvature or the radius of curvature may be calculated.

<Example of cable 200>
The measuring device described above can be applied to the cable 200 drawn into the seismic isolation structure.

  First, the seismic isolation structure will be described. Some seismic isolation structures support the upper structure via the seismic isolation device. In this type of seismic isolation structure, the seismic isolation device is greatly and slowly deformed when an earthquake occurs to reduce the seismic motion input to the structure. For this reason, when an earthquake occurs, a large relative displacement occurs between the lower structure and the upper structure.

  Therefore, the cable 200 drawn into the seismic isolation structure is required to follow a large relative displacement so that the function as the cable 200 is not impaired by the influence of the earthquake. In addition, even when the cable 200 follows a large relative displacement, the cable 200 has a curvature or a radius of curvature defined for the cable 200 so that the function as the cable 200 is not impaired. It is required that a shape state that does not satisfy the condition does not occur even for a moment.

According to the measurement apparatus described above, it is possible to detect the shape state of the cable 200 and calculate the curvature or the radius of curvature of the cable 200 in real time even for the cable 200 drawn into such a seismic isolation structure. Is possible.
Therefore, the measuring apparatus can detect the case where the cable 200 drawn into the seismic isolation structure has a shape and moment that impairs the function of the cable 200 due to the influence of the earthquake. If the cable 200 becomes a shape that impairs the function of the cable 200 even for a moment, the function of the cable 200 can be inspected or the cable 200 can be replaced. Therefore, even if the function as the cable 200 is impaired, the function as the cable 200 can be quickly restored. Thus, the measuring device described above is suitable for measuring the cable 200 drawn into the seismic isolation structure.

  It should be noted that the program for realizing the functions of the measurement apparatus described above is recorded on a computer-readable recording medium, and the program recorded on the recording medium is read into the computer system and executed, thereby executing the measurement apparatus 100. You may perform the measurement process by. Here, the “computer system” includes an OS and hardware such as peripheral devices.

Further, the “computer system” includes a homepage providing environment (or display environment) if a WWW system is used.
The “computer-readable recording medium” refers to a storage device such as a flexible medium, a magneto-optical disk, a portable medium such as a ROM and a CD-ROM, and a hard disk incorporated in a computer system. Furthermore, the “computer-readable recording medium” dynamically holds a program for a short time like a communication line when transmitting a program via a network such as the Internet or a communication line such as a telephone line. In this case, a volatile memory in a computer system serving as a server or a client in that case, and a program that holds a program for a certain period of time are also included. The program may be a program for realizing a part of the functions described above, and may be a program capable of realizing the functions described above in combination with a program already recorded in a computer system.

  The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and includes design and the like within a scope not departing from the gist of the present invention.

  1, 2 measurement system 10, 11 detection unit, 20 site extraction unit, 30 calculation unit, 40 determination unit, 50 notification unit, 60 control unit, 100 measurement device, 110 detection information storage unit, 120 extraction information storage unit, 130 History information storage unit, 140 threshold information storage unit, 200 measurement object, 300 marker, 400 GPS terminal, 410 position detection unit, 420 communication unit, 430 power storage unit, 440 identification information storage unit

Claims (12)

A detection unit that repeatedly detects the positions of a plurality of different sites in a linear measurement target;
A calculation unit that calculates a curvature or a radius of curvature based on the position repeatedly detected by the detection unit;
A measurement system comprising: The detection unit repeatedly detects the positions of the plurality of different parts by executing motion capture related to the positions of the plurality of different parts in the measurement target.
The measurement system according to claim 1. The detection unit is a plurality of position detection devices attached to different parts to be measured, and the plurality of different parts are obtained by acquiring the position information from a position detection device that outputs its own position information. Repeatedly detect the position of
The measurement system according to claim 1 or 2, wherein The said calculation part calculates the said curvature or the said curvature radius based on the position of the three different said site | parts detected by the said detection part. The any one of Claims 1-3 characterized by the above-mentioned. The measurement system according to item. The calculation unit extracts the positions of the three different parts from the positions detected by the detection part based on the definition of the curvature or the radius of curvature, and the extracted three different parts The measurement system according to any one of claims 1 to 4, wherein the curvature or the radius of curvature is calculated based on a position. 6. The calculation unit according to claim 1, wherein the calculation unit calculates the curvature or the curvature radius based on the position detected at the same timing by the detection unit. Measuring system. A determination unit that determines whether the curvature or the radius of curvature calculated by the calculation unit satisfies a predetermined curvature or curvature radius;
The measurement system according to any one of claims 1 to 6, further comprising: A notification unit for notifying that the curvature or the radius of curvature calculated by the calculation unit does not satisfy the rule when the determination unit determines that the curvature or the radius of curvature calculated by the calculation unit does not satisfy the rule;
The measurement system according to claim 7, further comprising: A control unit for storing a position repeatedly detected by the detection unit in a storage unit;
The measurement system according to any one of claims 1 to 8, further comprising: When notified that an earthquake has occurred, the detection unit detects the position at an earlier time interval than before being notified that an earthquake has occurred.
The measurement system according to claim 1, wherein: A detection unit that repeatedly detects the positions of a plurality of different sites in a linear measurement target;
A calculation unit that calculates a curvature or a radius of curvature based on the position repeatedly detected by the detection unit;
A measuring apparatus comprising: On the computer,
The detection unit repeatedly detects the position of a plurality of different parts in the linear measurement target,
A measurement program for causing a calculation unit to calculate a curvature or a radius of curvature based on a position repeatedly detected by the detection unit.

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