JPH05292601A - Deformation measuring system for pantograph - Google Patents

Abstract

PURPOSE:To provide a system for automatically measuring deformation, e.g. flexure, of collector shoe in pantograph optically for a vehicle moving in a tram depot. CONSTITUTION:A measuring optical system 5 comprising a pantograph detector 4 detecting the pantograph 1 of a moving vehicle 2, a projector 51 for projecting light to the collector shoe 11 in the pantograph, and an image receiving camera 52 for taking photograph of the surface of the collector shoe 11 by opening a shutter in response to a signal received from the pantograph detector is disposed over the opposite walls of a tram depot 6. The measuring optical system 5 further comprises an interval detecting section for detecting intervals at a plurality of points by extracting the profiles of two supporting boards constituting the collector shoe 11 from image signals received from the image receiving camera 52, a memory prestored with a reference interval between two supporting boards, and an image processing section 7 for comparing a plurality of detected interval data with the reference value and producing a pass signal if the difference is lower than a predetermined value otherwise producing a fail signal, which are disposed at appropriate positions in the tram depot.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system for automatically measuring deformation such as bending of a hull of a pantograph of a vehicle.

[0002]

2. Description of the Related Art An electric vehicle receives power from a trolley wire and travels by means of a pantograph provided on the electric vehicle. Figure 4 (a)
In, the pantograph 1 is an insulator on the roof of the vehicle 2.
Fixed by 21. The pantograph has a bending arm mechanism 12 and a boat 11 on top of it, and the boat 11 has two sled-shaped metal support plates 111 as shown in FIG.
Sliding plates 113, which are joined by 2 and are in sliding contact with the trolley wire 3, are attached to the upper surfaces of the respective supporting plates. Further, metal horn rods 114 are fixed to both sides of the boat. While the vehicle is running, some obstacles, such as irregularities of the support of the trolley wire, may collide with the hull 11, and the hull may be deformed or damaged depending on the degree of collision, and power reception may not be smooth. Or it becomes impossible and interferes with train operation.

FIG. 5 exemplifies a boat body 11 which is deformed due to a collision, and it is assumed that an obstacle collides with a point p of one support plate 111 and a stress P is applied thereto. When the stress P is relatively small, the coupling plate 112 first bends, and when the stress P is large, the support plate 111 and the horn rod 114 bend as shown. When the stress P is further increased, the stress P is damaged and deformed into a complicated shape. When the support plate bends, the distance between the two becomes uneven.

[0004]

Conventionally, the deformation of the hull is detected by visually lowering the pantograph in the garage, shutting off the pressure applied to the trolley wire, or visually or using a caliper. .. Manual inspection is a work on the roof of a vehicle, which is inefficient and dangerous, and due to the increase in the number of vehicles and the lack of manpower in recent years, the manual inspection is not possible. There is a difficult trend. On the other hand, by an optical method, a device for inspecting the deformation of the hull in a non-contact manner regardless of the presence or absence of pressure on the trolley wire is desired, and each vehicle moving in the garage is targeted. There is a demand for an automated system that quickly measures the hull. The present invention has been made in view of the above, and an object thereof is to provide a system for automatically measuring the deformation of a hull of a pantograph by an optical system, targeting a vehicle moving in a garage.

[0005]

DISCLOSURE OF THE INVENTION The present invention is a pantograph hull deformation inspection system that achieves the above-mentioned object, which is detected from the side with respect to a pantograph of a moving vehicle on both side walls in a garage. A pantograph detecting device including a light projector that projects light and a light receiver that receives detection light is provided. In addition, on the ceiling of the garage, there is a projection optical system that consists of a projector that illuminates the hull of the pantograph and an image-receiving camera that opens the shutter according to the detection signal from the pantograph detector to image the surface of the hull. To do. From the image reception signal of the image receiving camera, the contours of the two support plates that form the hull are extracted, and the interval detection unit that detects the intervals at the plurality of points and the reference value of the interval between the two support plates are set in advance. A comparison that compares the stored memory and a plurality of detected interval data with a reference value, and outputs a good signal when the difference is less than a certain value or a failure signal when it exceeds a certain value and outputs a failure signal. An image processing unit including a processing unit is provided and configured.

[0006]

In the above-mentioned inspection system, the detection light is projected from the projector of the pantograph detecting device to the pantograph of the vehicle moving in the garage, and when the vehicle comes in front of the detecting device, it is cut off from the light receiver. Pantograph is detected. The hull of the pantograph is always illuminated by the projector of the inspection optical system, and the image-receiving camera opens the shutter and images the surface of the hull by the detection signal of the pantograph. The image reception signal is input to the interval detection unit of the image processing unit to extract the contour of the boat, and the intervals between a plurality of positions of the two support plates are detected from the contour. In the comparison processing unit, the plurality of detected interval data are compared with a reference value stored in advance in the memory, and a good signal is determined when the difference is a certain value or less, or a defect is determined when the difference exceeds a certain value. And output a defective signal. The deformation of the hull of the pantograph is automatically and promptly detected by detecting the distance between the two support plates and comparing them with the reference values.

[0007]

1 to 3 show an embodiment of the present invention. Fig. 1 is a configuration diagram of the inspection optical system, (a) is a plan view, (b) is a sectional view perpendicular to the trolley line, and Fig. 2 is the arrangement of the inspection optical system and the image processing unit in the garage. FIG. 3 and FIG. 3 are explanatory diagrams of the configuration of the image processing unit and the inspection method for the deformation of the boat. 1 (a), 1 (b) and FIG. 2, the pantograph detection device 4 is composed of a projector 41 and a photoreceiver 42, which are arranged on both side walls of the garage 6, and the detection light projected from the projector is the photoreceiver. Is received by. Further, the inspection optical system 5 including the projector 51 and the image receiving camera 52 is provided on the ceiling of the garage, and the image processing unit 7 is provided inside the garage. In FIG. 3A, the image processing unit 7
Is an interval detector 71, a comparison processor 72, and a memory (ROM)
The pantograph detecting device 73 is connected to the image receiving camera 52, and the image receiving camera is connected to the interval detecting unit 71 to form an automatic inspection system.

The operation of the above-described automatic inspection system will be described with reference to FIGS. 1 to 3. When the vehicle 2 moving in the garage comes in front of the pantograph detecting device 5, the detection light projected from the projector 41 is pantographed. The signal is cut off by 1 and the detection signal is output from the light receiver 42. On the other hand, the hull 11 of the pantograph is illuminated by the projector 51 of the inspection optical system 5, and the shutter of the image receiving camera 52 is opened by the above detection signal to image the surface of the hull. The image reception signal is input to the interval detection unit 71 of the image processing unit 7 to extract the contour of the boat, and the plurality of positions p _{1 to} p ₇ of the boat shown in FIG. 3B are extracted from the extracted contour.
The distances w _{1 to} w ₇ between the two support plates 111 in FIG. However, the detection positions and the number thereof may be determined according to the actual situation. The reference value w _{s of the} interval is stored in the memory 73 in advance, and the detected intervals w _{1 to} w _{7 and the} like are compared with the reference value w _s in the comparison processing unit 72, and when the difference is less than a certain value, When a good signal or a certain value is exceeded, a bad signal is output and the deformation of the boat is measured. The image pickup by the image receiving camera 52 described above is performed for a moment, the image processing in the image processing unit 7 is also performed in an extremely short time, and the inspection for each ship is quickly performed.

[0009]

As described above, the deformation inspection system according to the present invention automatically detects the deformation such as the bending of the hull of the pantograph of the vehicle while moving in the garage, which increases the number of vehicles and the manpower shortage. There is a large part that contributes to streamlining the inspection work on the roof, which is difficult and dangerous, and improving the efficiency of the maintenance work of the pantograph and eventually normalizing train operation.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an inspection optical system according to an embodiment of the present invention, in which (a) is a plan view and (b) is a sectional view perpendicular to a trolley line.

FIG. 2 is a layout diagram of the inspection optical system and the image processing unit in FIG. 1 in a garage.

FIG. 3 is an explanatory diagram of a configuration of an image processing unit and a method of measuring deformation of a boat.

FIG. 4 (a) is a side view showing the configuration of a pantograph,
(b) is a perspective external view of the boat.

FIG. 5 shows an example of deformation that occurs in a boat.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Pantograph, 11 ... Boat, 111 ... Support plate, 112 ... Combining plate, 113 ... Sliding plate, 114 ... Horn part, 12 ... Arm mechanism,
2 ... Vehicle, 3 ... Trolley wire, 4 ... Pantograph detection device, 41 ... Projector, 42 ... Photoreceiver, 5 ... Inspection optical system, 51 ... Projector, 52 ... Image receiving camera, 6 ... Garage, 7 ... Image processing unit, 71
... Interval detection section, 72 ... Comparison processing section, 73 ... Memory (RO
M).

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Ryoichi Tamura 2-6-2 Otemachi, Chiyoda-ku, Tokyo Within Ritsu Denshi Engineering Co., Ltd. (72) Kenji Aiko 2-6-2 Otemachi, Chiyoda-ku, Tokyo No. 2 in Nitto Electronics Engineering Co., Ltd. (72) Inventor Haruo Kanaya 1-4, Meieki Nakamura-ku, Aichi Prefecture Nagoya City Tokai Passenger Railway Co., Ltd. (72) Inventor Kimiwa Takane Nakamura-ku, Nagoya, Aichi Prefecture Meieki 1-4-1 Tokai Passenger Railway Co., Ltd.

Claims (1)

[Claims] 1. A pantograph detection device comprising a projector for projecting detection light from a side of a pantograph of a moving vehicle and a pantograph detection device for receiving the detection light, which are provided on both side walls of a garage, On the ceiling of the garage, an inspection optical system including a projector that illuminates the hull of the pantograph with illumination light and an image receiving camera that opens the shutter according to the detection signal of the pantograph detector to image the surface of the hull is provided. Then, the contours of the two support plates that form the boat are extracted from the image reception signal of the image reception camera, and a gap detection unit that detects the gaps at a plurality of locations and a gap between the two support plates. A memory that stores a reference value in advance, and a plurality of the detected interval data are compared with the reference value, and a good signal is output when the difference is less than or equal to a certain value, or when the difference exceeds a certain value, it is determined as defective. To output a defective signal A deformation inspection system for a pantograph ship, comprising an image processing section including a comparison processing section.