JPS60147605A - Detector for wear of contact wire - Google Patents

Abstract

PURPOSE:To detect wear at high speed with high precision by using a light guide of an optical fiber and an image fiber to pick up the image of a contact wire and comparing the height of the contact wire in the image with a reference height of the contact wire to operate the quantity of wear. CONSTITUTION:A detector consists of a detecting head 3 where aperture ends of an optical fiber 5 through which the light is projected to the side face of a contact wire 1 and an image fiber 4 which receives the reflected light are arranged, an image sensor 6, a controller 7, a picture processing device 10, a display device 13, a slide resistance 16, etc. When the side face of the contact wire 1 is irradiated by the optical fiber 5, the reflected light is inputted to the picture processing device 10 through the image fiber 4 and the image sensor 6, and a value H obtained by correcting an apparent height H' of the contact wire on the display device 13 with a length L+ or -DELTAL between the contact wire 1 and the detecting head is operated and is compared with a reference height 2R (R is the radius of the contact wire 1) of the contact wire 1 to detect the quantity of wear of the contact wire 1. Thus, the quantity of wear is measured at high speed with high precision.

Description

[Detailed description of the invention] Technical fields> The present invention relates to a wear detection device for overhead contact lines.

<Prior art> Conventional methods for detecting the amount of wear on overhead contact lines include manually measuring the height of the remaining contact line using a micrometer, or measuring the amount of wear using an electric micrometer, etc. using the width of the contact line as a reference. The most common method is continuous measurement. These methods have disadvantages, such as the labor required to perform the measurement, and the fact that the measuring vehicle must be run at low speeds, which is problematic even though it is a continuous measurement. In recent years, a method has been proposed that uses the TV right camera and the beam to inspect the state of wear from images of the worn surface of overhead contact lines. had not been developed.

<Purpose of the Invention> The present invention has been made in view of the deficiencies of the prior art, and uses an optical fiber light guide and an image fiber to determine and process images of running overhead contact lines to calculate the amount of wear. The object of the present invention is to provide a contact wire wear detection device that has excellent electrical resistance and is inexpensive.

<Means for Solving the Problems> The structure of the contact wire wear detection device according to the present invention that achieves the above object is that the open end of an optical fiber that projects light from the side surface of the contact wire and the reflected light from the side surface of the contact wire are A detection head arranged with the open end of the image fiber that receives light, a pantograph equipped with a sliding plate to which the nuclear detection head is fixed, and a pantograph arranged at the other end of the image fiber that converts the light reception signal of the image fiber into a video signal. The height of the overhead contact line obtained from the image sensor and the video signal of the image sensor is corrected according to the distance between the overhead contact line and the detection head, and compared with the standard height of the overhead contact line. an image processing device that detects the wear amount of the vehicle and calculates and outputs the data in correspondence with information on the mileage and position of the vehicle; a display and recording device that displays and records the output of the image processing device; and two pantographs. Resistors arranged along the sliding plates and slid by the contact wire; a converter connected to one terminal of the resistor and outputting information on the distance between the contact wire and the detection head; an optical fiber forming a transmission line for supplying the output from the converter to the image processing device;
The optical fiber is characterized by comprising a converter and a switch for the optical fiber.

<Example> An example of the contact wire wear detection device according to the present invention will be described with reference to the drawings. FIG. 1 is a circuit diagram of a contact wire wear detection device according to the present invention. According to the contact wire wear detection device according to the present invention shown in FIG. 1, the contact wire l is in contact with the sliding plate 2 of the pantograph via the contact surface. The opening ends of the image fibers 4, which are composed of an optical fiber 5 that projects light that illuminates the tram line 1 (Z3Bi 11 surface) and a 30,000 to 50,000 II!jig that receives reflected light from the side of the tram line 1, are arranged and detected. The detection head 3 is fixed to one end of the sliding plate 2.The image fiber 4 is introduced into the vehicle from the pantograph and input to a CCD 6 as an image sensor.The image sensor CCD 6 is connected to the image fiber 4. The received light signal input to the CCD 6 is converted into an image signal and inputted to the image processing device 10 via the control circuit 7. A value H is calculated by correcting the height H' by the distance L±ΔL between the train Ifill and the detection head on the sliding plate 2, and is output together with information on the traveling distance and position of the train.Image processing device 10 includes the reference height 2R of the overhead contact line from the input data source 11 such as the reference height 2R of the overhead contact line (R is the radius of the circular overhead contact line).
information, information about the mileage and location of the train from information source 12 of the mileage and location of the train, and more trains! Information on the distance (L±ΔL) between 1 and the detection head 3 is input, and the image processing device 10 calculates the true overhead contact line H from the apparent overhead contact line height H' based on this input information, and It is output along with the distance traveled and location information.

Here, the distance between the overhead contact line 1 and the detection head 3 is the distance shown by the explanatory diagram showing the sliding plate 2 of the pantograph shown in FIG. Since the electric train 11i11 is short-circuited and its resistance value changes in proportion to the relative positional movement between the electric train 11i11 and the sliding plate 2, the electric current of the imaging distance correction signal is proportional to the distance between the electric train +1111 and the detection head 3. Information of the signal is provided by a converter 17. The electrical signal of Jin is converted into an optical signal by the electrical/optical conversion element F/'019, and is introduced into the car from the pantograph via the optical fiber cable 20 with high electrical insulation.
21, the signal is converted into an electrical signal and input to the image processing device 1o. The output of the image processing device *io is not only displayed on the display 13 but also printed out by the printer 14 and sequentially stored in the memory 15 as data. The apparent train height H′ explained above
The relationship between and the true 1s line height is shown in Figure 2.

In Fig. 2, the detection head 3 is placed at a sliding position deviated from L from 2, and the original fibers 5 to 9 constituting the light guide are irradiated onto the side of the train Ml, and the reflected light is provided in the detection head 3. The light is received by the image fiber 4. However, as the train runs, the relative position between the overhead contact line 1 and the detection head 3 constantly changes within the range of L±ΔL. Therefore, when ΔL is 20, H' = H, ΔL~0. When H′
=H(=-1-- corrected by l±ΔL/L'.

In the above-described contact wire wear detection device according to the present invention, if the detection head 3 is to be placed right next to the contact line, the detection head 3 must be placed on the sliding plate 2, which is a branch of the contact line. Since this is structurally impossible because the detection head 3 and the overhead contact line will collide at a certain point, the measurement is performed at a position below the sliding surface and slightly diagonally downward, so that the actual contact line cannot be measured. In the detection device according to the present invention, correction is required to detect the height of the contact line, that is, the amount of contact line wear, but these can be corrected by inputting correction constants into the image processing device in advance. Because it is detected, there is an error in some hangers of the overhead contact line, so if this value is present, it may be necessary to remove it. Furthermore, if the overhead contact line is not vertically suspended and is twisted, errors may occur, so if these corrections are made, even better results can be obtained.

<Effects of the Invention> According to the overhead contact line M-failure detection device according to the present invention, the amount of wear on the overhead contact line can be detected as an image, and the state of wear on the overhead contact line can be detected continuously and perceptually. In addition, since electrically highly insulated image fibers and optical fibers are used to transmit signals and source energy between the pantograph and the vehicle body, there is no problem with the insulation of the detection device against the contact line voltage, making it extremely easy to handle. easy.

A train according to the invention! 0, 111 for wear detection devices
If image processing is performed at 6c or less, high-speed continuous measurement work can be performed at a speed of l Q m/seeφ40&/Hr assuming that measurements are performed at intervals of 1 mjlJ].

If you want to perform measurement work at even higher speeds, store the image signals in high-speed memory and process them later for analysis, etc., and use a method such as displaying and warning only those points that exceed the judgment limits during measurement. is preferred. The device according to the present invention is simple, easy to operate, capable of high-speed measurement, can accurately find abnormalities through continuous measurement, and has improved performance and performance compared to conventional devices. Excellent for the price.

[Brief explanation of the drawing]

FIG. 1 shows a circuit 1fI of a contact line wear detection device according to the present invention.
FIG. 2 is a diagram showing the relationship between the overhead contact line and the detection head. In the drawing, 1 is the electric wire, 2 is the sliding plate of the pantograph, 3 is the detection head, 4 is the image fiber, 5 is the original fiber, 6 company image sensor, 7 and 9 are the control device, 8 is the light source, 10 1 is an image processing device, 11 is an input source such as a reference value, 12 is an input source for mileage/position information, 13 is a display, 13a is an image,
14 is a link, 15 is a memory, 16 is a slide resistor, 17 is a converter, 18 is a power source, 19 is an electrical/optical converter, 20 is an optical fiber, and 21 is an optical/electrical converter. Patent applicant Sumitomo Electric Industries Co., Ltd. Patent Attorney Shibe Mitsuishi (and 1 other person) Figure 1 Figure 2

Claims (1)

[Claims] A detection head in which an open end of an optical fiber that emits light from the 1i11 plane of the IS line and an open end of an image fiber that receives reflected light from the side surface of the overhead contact line are arranged, and the detection head is fixed to one end. an image sensor disposed at the other end of the image fiber that converts the received light signal of the image fiber into a video signal, and the overhead contact line obtained from the video signal of the upper H-pi image sensor. The height of the contact line is corrected according to the distance between the lane and the detection head, and the height of the contact line is compared with the standard height of the contact line to detect the amount of wear on the contact line. an image processing device that performs a corresponding calculation output; a slide resistor that is arranged along each of the two sliding plates of the pantograph and is slid by the lane; and a terminal connected to one side of the slide resistor; a converter that outputs information on the distance between the overhead contact line and the detection head; an optical fiber that forms a transmission line for supplying the output from the converter to the image processing device; and the optical fiber and the converter. Contact line wear characterized by an electrical/optical converter installed at the junction with the optical fiber, and an optical/electrical converter installed at the junction of the optical fiber with the image processing device. Detection device.