JP6635183B1 - Wear measuring device and wear measuring method - Google Patents

Abstract

A wear measuring apparatus and a wear measuring method capable of obtaining a value equivalent to a remaining diameter of a three-sided wear trolley wire are provided. An image I1 and I2 taken by first and second line sensor cameras 11 and 12 installed on a roof of a vehicle 10 are analyzed to calculate a real coordinate P0 of a trolley line center point from the image I1. The height of the lowermost surface of the trolley wire 16 is determined based on the information acquired by the trolley wire lowermost surface position measuring means, and the actual coordinates of the boundary points p1 to p5 are determined using the image I1 and the height of the lowermost surface of the trolley wire 16. P0 to P5 are calculated, the wear cross-sectional area S of the three-sided wear trolley wire 16 is calculated based on the actual coordinates P0 to P5, and the three-sided wear trolley line 16 and the cross-sectional area are calculated based on the wear cross-sectional area S of the three-sided wear trolley line 16. The remaining diameter of the horizontal wear trolley wire 16A having only the same horizontal wear portion 16a is calculated as the residual diameter equivalent value H of the three-face wear trolley wire 16. [Selection diagram] FIG.

Description

  The present invention relates to a wear measuring device and a wear measuring method for measuring wear of a trolley wire by processing an image obtained by photographing a width of a lower surface of the trolley wire from a roof of a train.

  2. Description of the Related Art Conventionally, a trolley wire wear measuring device that processes an image of a trolley wire photographed by a line sensor to determine the width of a worn portion of the trolley wire has been known (for example, see Patent Document 1 below).

  Also, when the wear portion of the trolley wire is in a wear state called uneven wear consisting of a horizontal wear portion and an inclined wear portion, it is equivalent to one residual diameter in consideration of the horizontal wear portion and the inclined wear portion based on the remaining cross-sectional area. A trolley wire wear measuring device and a trolley wire wear measuring method for calculating a value are also known (for example, see Patent Document 2 below).

Japanese Patent No. 4635657 JP-A-2006-142540 Japanese Patent No. 5418176

  Here, the wear portion of the trolley wire may be in a state having inclined wear portions 16b and 16c on both sides of the horizontal wear portion 16a as shown in FIG. A trolley wire in such a worn state is referred to as a three-sided wear trolley wire).

  However, the conventional trolley wire wear measuring device has a problem in that it is not possible to obtain a value equivalent to the remaining diameter of such a three-sided wear trolley wire.

  In view of the above, an object of the present invention is to provide a wear measuring device and a wear measuring method capable of obtaining a value equivalent to the remaining diameter of a three-sided wear trolley wire.

A wear measuring device according to a first invention for solving the above-mentioned problems,
A wear measurement camera installed on the roof of a train car and photographing the lower surface of the trolley wire,
A trolley wire bottom surface position measuring means for acquiring the height of the bottom surface of the trolley wire,
A processing device for analyzing an image captured by the wear measuring camera and information acquired by the trolley wire lowermost surface position measuring means to obtain a residual diameter equivalent value of the trolley wire,
The processing device is:
A trolley line center position calculation processing unit that calculates actual coordinates of a center point of the trolley line from an image of a lower surface of the trolley line,
A trolley wire lowermost surface height calculation processing unit that determines the height of the lowermost surface of the trolley wire based on information acquired by the trolley wire lowermost surface position measuring means,
Using the image of the lower surface of the trolley wire and the height of the lowermost surface of the trolley wire, the end of at least one inclined wear portion, the boundary point between the one inclined wear portion and the horizontal wear portion, the horizontal wear portion A boundary point position calculation processing unit that calculates the actual coordinates of the boundary point with the other inclined wear part and the end of the other inclined wear part,
The actual coordinates of the center point of the trolley line, and the end of the one inclined wear portion, the boundary point between the one inclined wear portion and the horizontal wear portion, the difference between the horizontal wear portion and the other inclined wear portion. A wear cross-sectional area calculation processing unit that calculates a wear cross-sectional area of the three-sided wear trolley wire based on actual coordinates of a boundary point and an end of the other inclined wear portion,
Based on the wear cross-sectional area of the three-sided wear trolley wire, the remaining diameter of the horizontal wear trolley wire having only the horizontal wear portion having the same cross-sectional area as the three-sided wear trolley wire having one horizontal wear portion and two inclined wear portions And a residual diameter equivalent value calculation processing unit that calculates the residual diameter equivalent value of the three-surface wear trolley wire.

Further, a wear measuring device according to a second aspect of the present invention for solving the above problems,
The boundary point position calculation processing unit, at least an end of the one inclined wear portion obtained from the image of the lower surface of the trolley wire, a boundary point between the one inclined wear portion and the horizontal wear portion, the horizontal wear portion And the pixel position of the boundary point between the other inclined wear portion and the end of the other inclined wear portion, and the end of the one inclined wear portion, based on the height of the lowermost surface of the trolley wire, Calculating actual coordinates of a boundary point between one inclined wear portion and the horizontal wear portion, a boundary point between the horizontal wear portion and the other inclined wear portion, and an end of the other inclined wear portion. I do.

In addition, a wear measuring device according to a third aspect of the present invention for solving the above-mentioned problems includes:
The boundary point position calculation processing unit determines the height of the lowermost surface of the trolley wire as a boundary point between the one inclined wear part and the horizontal wear part and a boundary point between the horizontal wear part and the other inclined wear part. It is characterized in that it is applied as a point height.

Further, a wear measuring method according to a fourth aspect of the present invention for solving the above problems,
A trolley line center point position calculation processing step of calculating actual coordinates of a center point of the trolley line from an image of a lower surface of the trolley line taken by a wear measuring camera installed on a roof of a train car,
A trolley line bottom surface height calculation processing step of calculating the height of the bottom surface of the trolley line based on the information obtained by the trolley line bottom surface position measuring means installed on the roof of the train car,
Using the image of the lower surface of the trolley wire and the height of the lowermost surface of the trolley wire, the end of at least one inclined wear portion, the boundary point between the one inclined wear portion and the horizontal wear portion, the horizontal wear portion Boundary point position calculation processing step of calculating the actual coordinates of the boundary point with the other inclined wear portion and the end of the other inclined wear portion,
The actual coordinates of the center point of the trolley line, and the end of the one inclined wear portion, the boundary point between the one inclined wear portion and the horizontal wear portion, the difference between the horizontal wear portion and the other inclined wear portion. A wear cross-sectional area calculation processing step of calculating a wear cross-sectional area of the three-sided wear trolley wire based on the actual coordinates of the boundary point and the end of the other inclined wear portion,
Based on the wear cross-sectional area of the three-sided wear trolley wire, the remaining diameter of the horizontal wear trolley wire having only the horizontal wear portion having the same cross-sectional area as the three-sided wear trolley wire having one horizontal wear portion and two inclined wear portions Is calculated as a residual diameter equivalent value of the three-sided wear trolley wire.

Further, a wear measuring method according to a fifth invention for solving the above-mentioned problems,
In the boundary point position calculation processing step, at least an end of the one inclined wear portion obtained from an image of the lower surface of the trolley wire, a boundary point between the one inclined wear portion and the horizontal wear portion, the horizontal wear portion And the pixel position of the boundary point between the other inclined wear portion and the end of the other inclined wear portion, and the end of the one inclined wear portion, based on the height of the lowermost surface of the trolley wire, Calculating actual coordinates of a boundary point between one inclined wear portion and the horizontal wear portion, a boundary point between the horizontal wear portion and the other inclined wear portion, and an end of the other inclined wear portion. I do.

Further, a wear measuring method according to a sixth invention for solving the above-mentioned problems,
In the boundary point position calculation processing step, the height of the lowermost surface of the trolley wire is set to a boundary point between the one inclined wear portion and the horizontal wear portion and a boundary point between the horizontal wear portion and the other inclined wear portion. It is characterized in that it is applied as a point height.

  According to the wear measuring device and the wear measuring method according to the present invention, it is possible to obtain the value equivalent to the remaining diameter of the three-sided wear trolley wire.

BRIEF DESCRIPTION OF THE DRAWINGS It is explanatory drawing which shows the apparatus outline | summary of the wear measuring device which concerns on the Example of this invention. FIG. 2 is a block diagram illustrating a configuration of a processing device illustrated in FIG. 1. 2 is a flowchart showing a flow of processing in the processing device shown in FIG. 1. It is sectional drawing which shows an example of a three-surface wear trolley wire. FIG. 5 is a schematic diagram illustrating an example of an image of the trolley wire illustrated in FIG. 4. It is explanatory drawing which shows the relationship between a trolley wire, a camera center point, and a sensor surface. It is a figure for explaining a calculation method of a residual diameter equivalent value.

The present invention relates to a wear measuring apparatus and a wear measuring method for measuring the wear of a trolley wire by photographing the width of the lower surface of a trolley wire from the roof of a train and processing this image. When the moving surface includes three surfaces having different inclinations from each other, this is for measuring a residual diameter equivalent value which is an index for knowing the life of the trolley wire.
Hereinafter, a wear measuring device and a wear measuring method according to the present invention will be described with reference to the drawings, but the present invention is not limited to the following examples.

  A wear measuring device and a wear measuring method according to an embodiment of the present invention will be described in detail with reference to FIGS.

  As shown in FIG. 1, in this embodiment, a wear measuring device includes a first line sensor camera 11 as a wear measuring camera installed on a roof of a train car (hereinafter, simply referred to as a vehicle) 10, and a trolley. The vehicle includes a second line sensor camera 12 as a line bottom surface position measuring means, an illumination device 13, and a processing device 20 installed inside the vehicle 10.

  The first line sensor camera 11 is installed vertically upward on the roof of the vehicle 10 so that the scanning line direction 18 is the same as the sleeper direction. As a result, the scanning line of the first line sensor camera 11 crosses the trolley line 16.

  Further, the second line sensor camera 12 is installed on the roof of the vehicle 10 obliquely upward toward the pantograph 14, and is installed such that the scanning line direction 19 is the same as the vehicle vertical direction. . Thus, the scanning line of the second line sensor camera 12 crosses the pantograph 14. In this embodiment, the second line sensor camera 12 is used to determine the height of the lowermost surface of the trolley wire 16 (the height of the upper position 15 of the pantograph 14) by the trolley wire lowermost surface height calculation processing unit 20c, which will be described later. Used.

  The image data acquired by the first and second line sensor cameras 11 and 12 are input to the processing device 20.

  The illumination device 13 illuminates the trolley wire 16 in an area imaged by the first line sensor camera 11. In addition, 17 shown in the figure is a structure that supports the trolley wire.

  The processing device 20 is, for example, a device such as a computer, and has a device configuration including an arithmetic device, a storage device, an input / output device, and the like, and a functional configuration illustrated in FIG.

Hereinafter, the processing in the processing device 20 will be described in detail with reference to FIGS.
As shown in FIG. 2, the processing device 20 includes a line sensor image creation unit 20a, a trolley wire center point position calculation processing unit 20b, a trolley line bottom surface height calculation processing unit 20c, and a boundary point position calculation processing unit 20d. And a wear cross-sectional area calculation processing unit 20e, a remaining diameter equivalent value calculation processing unit 20f, and memories M1 and M2 as storage means.

  The processing device 20 performs image processing on image signals input from the first line sensor camera 11 and the second line sensor camera 12 according to the flowchart shown in FIG. 7) is calculated.

  That is, in the processing device 20, first, the image signal input from the first line sensor camera 11 and the image signal input from the second line sensor camera 12 are arranged in time series by the line sensor image creation unit 20a. Then, it is stored in the memory M1 as the line sensor image I1 and the line sensor image I2 (step S1).

  Here, the trolley wire 16 is displayed on the line sensor image I1, for example, as shown in FIG. In this embodiment, the left end p1 of the trolley wire 16 which is the boundary between the background 21 and the trolley wire 16 shown in FIG. 5, the boundary point (end of wear portion) p2 between the non-wear portion 16d and the inclined wear portion 16b, and the inclined wear portion 16b A boundary point p'3 between the horizontal wear portion 16a and the horizontal wear portion 16a, a boundary point p3 between the horizontal wear portion 16a and the inclined wear portion 16c, a boundary point (end portion of the wear portion 16e) and the trolley wire 16 between the inclined wear portion 16c and the non-wear portion 16e. A pixel at the right end p5 (corresponding to points P1, P2, P'3, P3, P4, and P5 shown in FIG. 4 of the trolley line 16 which is a boundary with the background 21. Hereinafter, p1 to p5 are simply referred to as "boundary points"). The positions px1, px2, px'3, px3, px4, px5 [pix] are set automatically by the system by processing the line sensor image I1, or are set by the user on the GUI. I do. It is assumed that camera parameters (focal length, number of sensor elements, and sensor width) are set in advance.

Subsequent to step S1, the pixel positions px1 and px5 of the boundary points p1 and p5 set based on the line sensor image I1 are sent to the trolley wire center point position calculation processing unit 20b along with the camera parameters via the memory M2, and the trolley wire 16 the actual coordinate P0 (x _0, y ₀₎ of the center point p0 of is calculated (step S2).

Specifically, first, the pixel positions px1 and px5 of the boundary points p1 and p5 on the line sensor image I1 are converted into sensor surface coordinates u1 and u5 [mm] shown in FIG. For simplicity, a calculation formula when there is no lens distortion is shown below.
Here, when the sensor width per element is Δu, the pixel positions px1 and px5 are converted to sensor surface coordinates u1 ′, u5 ′ [mm] by the following equation (1) with the left end of the sensor surface 2a as the origin. Further, assuming that the center of the sensor surface 2a is the origin and the width of the sensor surface is U, the coordinates u1, u5 [mm] on the sensor surface are converted into the following equation (2). However, in the following equations (1) and (2), pixel positions px1 and px5 are represented by px, sensor plane coordinates u1 'and u5' are represented by u ', and sensor plane coordinates u1 and u5 are represented by u.
u ′ = Δu × px (1)
u = u'-U / 2 (2)
At this time, by performing the conversion in consideration of the distortion of the lens, a more accurate result can be obtained.

  After obtaining the sensor plane coordinates u1 and u5 from the pixel positions px1 and px5 of the boundary points p1 and p5 on the line sensor image I1 as described above, the sensor plane coordinates u1 and the camera center point C are determined as shown in FIG. The formula of a straight line L1 passing through, a sensor plane coordinate u5, and a straight line L5 passing through the camera center point C is obtained. However, at this time, the coordinate origin is the camera center point C.

The equations for the straight lines L1 and L5 are obtained by the following equation (3) using the focal length f. The inclinations a ₁ and a ₅ of the straight lines L 1 and L ₅ are a ₁ = f / u ₁ and a ₅ = f / u ₅ , and the angles θ ₁ and θ _{5 of the} straight lines L 1 and L 5 with respect to the horizontal direction (x direction). Is obtained by the following equation (4). However, the following equation (3), (4) in a straight line L1, L5 L, the sensor surface coordinate u1, u5 u, the gradient a _1, a ₅ linear L1, L5 a, linear L1, L5 relative to the x-direction The inclinations θ ₁ and θ ₅ are shown as θ.
y = ax = (f / u) x (3)
θ = arctan (f / u) (4)

Straight line L1 was determined by the above, L5 formula, the actual coordinates of the straight line L1, L5 gradient a ₁ of a ₅ and the inclination theta ₁ of the straight line L1, L5 relative to the x-direction, the center point of the trolley wire 16 with theta ₅ p0 P0 the (x _0, y ₀₎ seek.
That is, as shown in FIG. 6, considering a straight line L0 passing through the real coordinates P0 of the center point p0 of the trolley wire 16 and the camera center point C, the angle θ _{0 of the} straight line L0 with respect to the x direction is θ ₀ = (θ ₁ + θ). ₅ ) / 2, the equation of the straight line L0 is obtained by the following equation (5).
y = a ₀ x = tan (θ ₀ ) x (5)
Further, the distance to the straight line L1 from the center point P0 of the trolley wire 16 which is on the straight line _{L0 (x 0, y 0)} , since it is equal to the radius r [mm] of the contact wire, the center point of the trolley wire 16 The x coordinate x _{o of} P0 is obtained by the following equation (6). In addition, from _{y 0 = a 0 x 0,} y 0 is also obtained. Equation (6) was determined using the “formula for distance d between point and straight line” shown in equation (7) below.

By the above, the actual coordinate P0 (x _0, y ₀₎ of the center point p0 of the trolley wire 16 is obtained.

After step S2, as shown in FIG. 2, when the pixel positions px1 to px5 of the boundary points p1 to p5 on the line sensor image I1 are sent to the boundary point position calculation processing unit 20d via the memory M2 together with the camera parameters. as shown in FIG. 3, the boundary point position calculation processing section 20d are boundary points 6 points (p1, p2, p'3, p3 , p4, p5) real coordinates _{P1 (x 1, y 1)} , P2 (x _{2, y 2), P'3 (} x '3, y' 3), P3 (x 3, y 3), P4 (x 4, y 4), determine the _{P5 (x 5, y 5)} ( step S3 ).

Specifically, first, the actual coordinates P1 and P5 of the boundary points p1 and p5 are obtained. The actual coordinates P1 and P5 are obtained by utilizing the condition that they are the contact points between the trolley wire 16 and the straight lines L1 and L5. That is, the perpendicular y = (− 1 / a ₁ ) x + (1 / a ₁ ) x ₀ + y ₀ of the straight line L ₁ passing through the center point P 0 (x ₀ , y ₀ ) of the trolley wire 16 and the straight line L 1 (y = a ₁₎ perpendicular of the straight line L5 that intersection of the x) passes through P1, the center point P0 of the trolley wire 16 _{(x 0, y 0) y} = (- 1 / a 5) x + (1 / a 5) x 0 + y 0 and the straight line intersection between L5 (y = a ₅ x) is P5. The x-coordinate and y-coordinate (height) of the real coordinates P1 and P5 are obtained by the following equations (8) and (9), respectively. However, the x _1, x ₅ is the x-coordinate of the formula (8) and (9) in the real coordinate P1, P5 shown as x, a y _1, y ₅ and y coordinates of the real coordinate P1, P5 as y And the inclinations a ₁ and a ₅ of the straight lines L 1 and L ₅ are indicated as a.

Next, the actual coordinates P2 and P4 of the boundary points p2 and p4 are obtained. The equations (y = a ₂ x, y = a ₄ x) of the straight lines L2 and L4 are obtained in the same manner as L1 and L5. As can be seen from FIG. 4, since the real coordinates P2 and P4 of the boundary points p2 and p4 are points on the circumference of the trolley wire 16, the center point P0 (x ₀ , y ₀ ) can be obtained as the intersection of the circle having the radius r and the straight lines L2 and L4. However, shows a x _2, x ₄ is the x-coordinate of the formula in (10) real coordinate P2, P4 shown as x, the gradient a _2, a ₄ straight lines L2, L4 as a.

Y _2, y ₄ and y coordinates of the real coordinate P2, P4 is determined from _{y 2 = a 2 x 2,} y 4 = a 4 x 4.
Thus, the actual coordinate _{P2 (x 2, y 2)} , P4 (x 4, y 4) is obtained.

Subsequently, the real coordinates P3, P'3 of the boundary points p3, p'3 are obtained. First, the actual coordinate P3, we obtain the y _3, y _'3 is a y coordinate of the P'3. Here, the boundary points p3 and p'3 are not points on the circumference of the trolley wire, and are at the same height as the boundary points p3 and p'3 among the other boundary points p1, p2, p4 and p5. There are no boundary points. Accordingly, as shown in FIG. 2, the trolley wire bottom surface height calculation processing unit 20c uses the method of Patent Document 3 based on the camera parameters and the line sensor image I2 sent via the memory M2, for example, using the method of Patent Document 3. Find the bottom height. That is, since the boundary points p3 and p'3 have the same height as the lowermost surface of the trolley wire 16, the height of the lowermost surface of the trolley wire 16 is obtained, and is sent to the boundary point position calculation processing unit 20d. It is applied as heights y ₃ and y ′ ₃ of points p3 and p′3. If the height y is determined, the deviations x ₃ and x ′ ₃ of the boundary points p3 and p′3 can be determined as x = (u / f) y.
As described above, the deviation x and the height y at the six boundary points of the three-sided wear trolley line were obtained.

  Next, as shown in FIG. 2, the real coordinates P0 of the center point p0 of the trolley wire 16 and the real coordinates P2, P′3, P3 of the boundary points p2, p′3, p3, and p4 are sent to the wear cross-sectional area calculation processing unit 20e. , P4 are sent via the memory M2, the wear cross-sectional area calculation processing unit 20e calculates the wear cross-sectional area as shown in FIG. 3 (step S4).

とする。 Hereinafter, the process of calculating the wear cross-sectional area will be specifically described.
First, the position vectors of the real coordinates P0, P2, P'3, P3, P4 are

And

In this case, the area S _a of the polygon P0P2P'3P3P4 is determined by the following equation (11) using the cross product.

On the other hand, as shown in FIG. 4, when the plane vectors shown in the following equations (12) and (13) are used, the angle θ ₀ of ∠P2P0P4 can be obtained by the following equation (14).

以上より、摩耗断面積Ｓは、下式（16）で求められる。
Ｓ＝Ｓ_b−Ｓ_a …（16） The area S _b of the fan P0P2P4 is determined by the following formula (15).

From the above, the wear cross-sectional area S is obtained by the following equation (16).
_{S = S b -S a ... (} 16)

  Next, as shown in FIG. 2, when the wear cross-sectional area S is sent to the remaining diameter equivalent value calculation processing unit 20f via the memory M2, the remaining diameter equivalent value calculation processing unit 20f, as shown in FIG. An equivalent value is calculated (step S5).

Hereinafter, a method for obtaining the remaining diameter equivalent value H of the three-sided wear trolley wire 16 will be described.
First, the formula for determining the wear cross-sectional area S _A of the horizontal wear trolley wire 16 _A having only the horizontal wear portion 16a as shown on the right side of FIG. 7, the radius r of the horizontal wear trolley wire 16 _A, the wear angle α using Thus, the following equation (17) is obtained.

Here, at the following equation (18), substituted if are known wear cross-sectional area S of the three-sided wear trolley wire 16 shown on the left side of FIG. 7, the S wear cross-sectional area S _A of the formula (18) Newtons By applying the method, the wear angle α can be calculated by the following equation (19).

Thus, the wear angle in the horizontal wear trolley wire 16 _A having a wear cross-sectional area S _A of the sectional area S of the same area of the three-sided wear contact wire 16 determined by the wear section product calculating unit 20e alpha is obtained.
From the determined wear angle α, the residual diameter equivalent value H is determined by the following equation (20).

As described above, the remaining diameter value of the horizontal wear trolley wire 16 _A having the wear cross-sectional area S _A having the same area as the known wear cross-sectional area S of the three-face wear trolley wire 16, that is, the value equivalent to the remaining diameter of the three-face wear trolley wire 16. H is required.

  Note that the trolley wire wear measuring device and the trolley wire wear measuring method according to the present invention are not limited to the above-described embodiments, and needless to say, various changes can be made without departing from the spirit of the present invention. No.

For example, in the embodiment described above, the boundary points p1, p2 at the boundary point position calculation processing section 20d, P'3, p3, p4, p5 actual coordinates _{P1 (x 1, y 1)} , P2 (x 2, y 2 _{), P'3 (x '3,} y' 3), P3 (x 3, y 3), P4 (x 4, y 4), an example is shown for calculating the P5 (x _5, y ₅₎ at least the boundary point p2 in the boundary point position calculation processing section 20d, P'3, p3, actual coordinates of _{p4 P2 (x 2, y 2} ), P'3 (x '3, y' 3), P3 (x 3 , Y ₃ ) and P 4 (x ₄ , y ₄ ) may be calculated.

  According to the trolley wire wear measuring device and the trolley wire wear measuring method according to the present embodiment described above, even if the three-sided wear trolley wire 16 having the horizontal wear portion 16a and the inclined wear portions 16b and 16c, the remaining cross-sectional area S Since the remaining diameter equivalent value H can be calculated in consideration of the horizontal wear portion 16a and the inclined wear portions 16b and 16c based on the above, the tensile strength of the trolley wire 16 can be accurately grasped.

Further, residual diameter equivalent value H, it is possible to handle the usual same column as residual diameter values of the horizontal wear trolley wire 16 _A, to be centrally managed trihedral wear trolley wire 16 and the normal horizontal wear trolley wire 16 _A There is also the advantage that you can.

  In the present embodiment, an example in which the trolley wire lowermost surface height calculation processing unit 20c calculates the height of the lowermost surface of the trolley wire using the method of Patent Document 3 described above, but the height of the lowermost surface of the trolley wire is shown. The degree may be obtained by using another method.

Reference Signs List 10 vehicle 11 first line sensor camera 12 second line sensor camera 13 lighting device 14 pantograph 15 upper position of pantograph 16 trolley wire 16a horizontal wear portion 16b, 16c inclined wear portion 16d, 16e non-wear portion 17 structure 18th Scanning line direction of one line sensor camera 19 Scanning line direction of second line sensor camera 20 Processing unit 20a Line sensor image creation unit 20b Trolley line center point position calculation processing unit 20c Trolley line bottom surface height calculation processing unit 20d Boundary Point position calculation processing unit 20e Wear cross-sectional area calculation processing unit 20f Residual diameter equivalent value calculation processing unit 21 Background M1, M2 Memory as storage means P0 Real coordinates of trolley line center point p1, p2, p'3, p3, p4 p5 Boundary points on the image P1, P2, P'3, P3, P4, P5

Claims (6)

A wear measurement camera installed on the roof of a train car and photographing the lower surface of the trolley wire,
A trolley wire bottom surface position measuring means for acquiring the height of the bottom surface of the trolley wire,
A processing device for analyzing an image captured by the wear measuring camera and information acquired by the trolley wire lowermost surface position measuring means to obtain a residual diameter equivalent value of the trolley wire,
The processing device is:
A trolley line center position calculation processing unit that calculates actual coordinates of a center point of the trolley line from an image of a lower surface of the trolley line,
A trolley wire lowermost surface height calculation processing unit that determines the height of the lowermost surface of the trolley wire based on information acquired by the trolley wire lowermost surface position measuring means,
Using the image of the lower surface of the trolley wire and the height of the lowermost surface of the trolley wire, the end of at least one inclined wear portion, the boundary point between the one inclined wear portion and the horizontal wear portion, the horizontal wear portion A boundary point position calculation processing unit that calculates the actual coordinates of the boundary point with the other inclined wear part and the end of the other inclined wear part,
The actual coordinates of the center point of the trolley line, and the end of the one inclined wear portion, the boundary point between the one inclined wear portion and the horizontal wear portion, the difference between the horizontal wear portion and the other inclined wear portion. A wear cross-sectional area calculation processing unit that calculates a wear cross-sectional area of the three-sided wear trolley wire based on actual coordinates of a boundary point and an end of the other inclined wear portion,
Based on the wear cross-sectional area of the three-sided wear trolley wire, the remaining diameter of the horizontal wear trolley wire having only the horizontal wear portion having the same cross-sectional area as the three-sided wear trolley wire having one horizontal wear portion and two inclined wear portions And a remaining diameter equivalent value calculation processing unit that calculates a residual diameter equivalent value of the three-sided wear trolley wire. The boundary point position calculation processing unit, at least an end of the one inclined wear portion obtained from the image of the lower surface of the trolley wire, a boundary point between the one inclined wear portion and the horizontal wear portion, the horizontal wear portion And the pixel position of the boundary point between the other inclined wear portion and the end of the other inclined wear portion, and the end of the one inclined wear portion, based on the height of the lowermost surface of the trolley wire, Calculating actual coordinates of a boundary point between one inclined wear portion and the horizontal wear portion, a boundary point between the horizontal wear portion and the other inclined wear portion, and an end of the other inclined wear portion. The wear measuring device according to claim 1. The boundary point position calculation processing unit determines the height of the lowermost surface of the trolley wire as a boundary point between the one inclined wear part and the horizontal wear part and a boundary point between the horizontal wear part and the other inclined wear part. 3. The wear measuring device according to claim 2, wherein the device is used as a point height. A trolley line center point position calculation processing step of calculating actual coordinates of a center point of the trolley line from an image of a lower surface of the trolley line taken by a wear measuring camera installed on a roof of a train car,
A trolley line bottom surface height calculation processing step of calculating the height of the bottom surface of the trolley line based on the information obtained by the trolley line bottom surface position measuring means installed on the roof of the train car,
Using the image of the lower surface of the trolley wire and the height of the lowermost surface of the trolley wire, the end of at least one inclined wear portion, the boundary point between the one inclined wear portion and the horizontal wear portion, the horizontal wear portion Boundary point position calculation processing step of calculating the actual coordinates of the boundary point with the other inclined wear portion and the end of the other inclined wear portion,
The actual coordinates of the center point of the trolley line, and the end of the one inclined wear portion, the boundary point between the one inclined wear portion and the horizontal wear portion, the difference between the horizontal wear portion and the other inclined wear portion. A wear cross-sectional area calculation processing step of calculating a wear cross-sectional area of the three-sided wear trolley wire based on the actual coordinates of the boundary point and the end of the other inclined wear portion,
Based on the wear cross-sectional area of the three-sided wear trolley wire, the remaining diameter of the horizontal wear trolley wire having only the horizontal wear portion having the same cross-sectional area as the three-sided wear trolley wire having one horizontal wear portion and two inclined wear portions Calculating a residual diameter equivalent value of the three-sided wear trolley wire as a residual diameter equivalent value. In the boundary point position calculation processing step, at least an end of the one inclined wear portion obtained from an image of the lower surface of the trolley wire, a boundary point between the one inclined wear portion and the horizontal wear portion, the horizontal wear portion And the pixel position of the boundary point between the other inclined wear portion and the end of the other inclined wear portion, and the end of the one inclined wear portion, based on the height of the lowermost surface of the trolley wire, Calculating actual coordinates of a boundary point between one inclined wear portion and the horizontal wear portion, a boundary point between the horizontal wear portion and the other inclined wear portion, and an end of the other inclined wear portion. 5. The method for measuring wear according to claim 4, wherein: In the boundary point position calculation processing step, the height of the lowermost surface of the trolley wire is set to a boundary point between the one inclined wear portion and the horizontal wear portion and a boundary point between the horizontal wear portion and the other inclined wear portion. The method according to claim 5, wherein the method is applied as a height of a point.

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