CN214893085U - Contact wire abrasion rapid measuring device - Google Patents
Contact wire abrasion rapid measuring device Download PDFInfo
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- CN214893085U CN214893085U CN202121008113.8U CN202121008113U CN214893085U CN 214893085 U CN214893085 U CN 214893085U CN 202121008113 U CN202121008113 U CN 202121008113U CN 214893085 U CN214893085 U CN 214893085U
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Abstract
The utility model discloses a contact wire wearing and tearing quick measuring device, including roof (1), be provided with fixed station (3) on roof (1), both sides that fixed station (3) are on a parallel with contact wire (9) are provided with multiunit mounting bracket (2), be provided with dead lever (4) between each group's mounting bracket (2), be provided with multiunit laser dead lever (5) on dead lever (4), be provided with laser instrument (6) and camera dead lever (7) on laser dead lever (5), be provided with a plurality of cameras (8) on camera dead lever (7), camera (8) upwards gather the cross section image of contact wire (9), camera (8) and laser instrument (6) one-to-one and constitute the optical cutting measuring component, each group optical cutting measuring component constitutes the measurement triangle with contact wire (9). The utility model discloses can quick continuous measurement, measurement accuracy is high, the high advantage of measurement efficiency, solved the shortcoming that traditional manual measurement contact net wearing and tearing operating efficiency is low, the risk is high, the error is big.
Description
Technical Field
The utility model relates to a rail transport technical field especially relates to a contact wire wearing and tearing quick measuring device.
Background
With the increasing of the operation mileage of the electrified railway in China, the contact net is used as an important use and operation link of the electrified railway, and the operation safety of the whole electrified railway is influenced by the important function of the contact net in aspects of initial design, assembly and processing, later maintenance, technical treatment in construction and the like.
The electric locomotive obtains kinetic energy by mutually contacting and taking current with an electrified railway contact net through a vehicle-mounted pantograph in an operation process. Along with the accumulation of the operation time, the contact net lead and the pantograph are gradually worn in the long-time sliding contact process. When the contact wire is seriously worn, the current collection quality of the pantograph-catenary is reduced, the mechanical performance of the contact wire is also reduced, the risk of breakage exists, and the operation safety of the electric locomotive is influenced. Therefore, the abrasion of the electrified railway contact net lead needs to be monitored, and the abrasion defect position is found in time for maintenance so as to ensure the operation safety.
Conventional contact wire wear measurement methods: the method comprises the steps that workers in a workshop contact network overhaul, power failure skylight of the contact network are utilized, the ascending operation of a ladder truck or an operation vehicle is matched, the residual height of the contact line at key positions such as a contact line positioning point and a dropper point is measured by a spiral measuring instrument, and the residual height is subtracted from the standard contact line diameter to obtain the contact line abrasion.
The traditional contact line abrasion measuring method has the following defects: 1. the abrasion measurement data is single-point measurement, the abrasion condition of the contact net cannot be completely reflected, and the artificial measurement error is large; 2. the requirement of the ascending measurement operator is large, the measurement efficiency is low, and the safety risk is high; 3. the measurement operation needs the contact net to cut off the power, influences passenger stock operation.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a contact wire wearing and tearing quick measuring device, which comprises a vehicle roof, be provided with the fixed station on the roof, the both sides that the fixed station is on a parallel with the contact wire are provided with the multiunit mounting bracket, are provided with the dead lever between each group's mounting bracket, be provided with multiunit laser instrument dead lever on the dead lever, be provided with laser instrument and camera dead lever on the laser instrument dead lever, be provided with a plurality of cameras on the camera dead lever, the camera upwards gathers the cross section image of contact wire, camera and laser instrument one-to-one form the light and cut measuring component, each group light and cut measuring component and contact wire constitution and measure the triangle.
Specifically, the laser fixing rod is arranged in a direction perpendicular to the fixing rod.
Specifically, the camera fixing rod is arranged in a direction perpendicular to the laser fixing rod.
The vehicle interior equipment comprises a detection host and an electric controller, the detection host is connected with a camera through an optical fiber, the electric controller is connected with the detection host, the camera and a laser through a power line respectively, the vehicle bottom equipment comprises a speed sensor, the speed sensor is connected with the detection host through a signal line, and the speed sensor is connected with the electric controller through a power line.
Specifically, the camera adopts a high-definition area array industrial digital camera.
Specifically, the laser is a line laser.
The beneficial effects of the utility model reside in that: the method has the advantages of rapid and continuous measurement, high measurement precision and high measurement efficiency, and solves the defects of low operation efficiency, high risk and large error of the traditional manual measurement of the contact net abrasion; the continuous and high-precision detection of the abrasion of the contact net of the electrified railway can be completed at the speed of 40 KM/H.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a top view of the present invention;
FIG. 3 is a schematic view of a light-section measuring assembly according to the present invention;
FIG. 4 is a schematic diagram of the system of the present invention;
FIG. 5 is a schematic diagram of the contact line wear measurement and circle fitting calculation of the present invention;
in the figure: 1-vehicle roof, 2-mounting rack, 3-fixing table, 4-fixing rod, 5-laser fixing rod, 6-laser, 7-camera fixing rod, 8-camera and 9-contact line.
Detailed Description
For solving the pain point that the contact net wearing and tearing measurement exists, combine the current domestic ripe vehicular contact net geometric parameters measurement technique, one set of vehicular contact line wearing and tearing quick measuring device of this application design.
According to the light cutting method measuring principle based on machine vision, a set of vehicle-mounted contact line abrasion rapid measuring device is designed. The device utilizes line laser instrument vertical upwards to project on the contact line, and high definition area array industry digital camera shoots the contact line cross section high definition image of reflection behind the laser line transmission to the contact line. The high-definition image is transmitted to a special detection computer through optical fibers for analysis and processing, the contact line abrasion point is identified by using a professional image processing algorithm, and the contact line abrasion is calculated. The contact line abrasion measuring device can be used for rapidly, continuously and accurately measuring the contact line abrasion and has good application prospect.
Referring to fig. 1-3, the present application provides an embodiment, which provides a contact wire wear rapid measuring device, including a vehicle roof 1, a fixing platform 3 is disposed on the vehicle roof 1, two sets of mounting frames 2 are disposed on two sides of the fixing platform 3 parallel to a contact wire 9, a fixing rod 4 is disposed between each set of mounting frames 2, two sets of laser fixing rods 5 are disposed on the fixing rod 4, the laser fixing rods 5 are disposed in a direction perpendicular to the fixing rod 4, a laser 6 is disposed on each set of laser fixing rods 5, the laser 6 is a line laser, a set of camera fixing rod 7 is disposed between two sets of laser fixing rods 5, the camera fixing rod 7 is disposed in a direction perpendicular to the laser fixing rods 5, two cameras 8 are disposed on the camera fixing rods 7, the cameras 8 are high-definition area-array industrial digital cameras, the high-definition industrial digital cameras upwardly collect cross-sectional images of the contact wire 9, the high-definition area array industrial digital camera and the line laser correspond to each other one by one and form an optical cutting measuring assembly, and each optical cutting measuring assembly and the contact line 9 form a measuring triangle, which can be referred to fig. 3 specifically.
The device comprises a detection host and an electric controller, wherein the detection host is connected with a camera 8 through an optical fiber, the electric controller is respectively connected with the detection host, the camera 8 and a laser 6 through power lines, the vehicle bottom device comprises a speed sensor, the speed sensor is connected with the detection host through a signal line, the speed sensor is connected with the electric controller through the power lines, and the electric controller is connected with a vehicle power supply.
Specifically, a wire hole is formed between the fixed table 3 and the vehicle roof 1, and both the optical fiber network cable and the power line are connected into the vehicle through the wire hole.
Because the diameter of the contact wire is generally 14.4mm, and the range of the drawing value of the contact wire is generally-400 mm (horizontal distribution range), the single group of measuring cameras has a limited measuring range, and in order to take the measuring range and the measuring precision into consideration, the device adopts two groups of parallel high-resolution measuring digital cameras and lasers to measure the abrasion of the contact wires, meanwhile, because the device is a vehicle-mounted detection device, the vehicle running speed is higher, and a high frame rate and high resolution industrial camera is adopted to meet the vehicle-mounted operation environment, therefore, the data volume is large, so the image data of the roof detection camera is transmitted to the in-vehicle detection host by adopting optical fibers, the in-vehicle detection host is mainly used for acquiring and storing the image data of the roof detection camera unit, and transmitting the image data to a detection computer through optical fibers for analysis and processing, identifying the contact line abrasion point, and calculating the contact line abrasion.
Specifically, the device can be installed on engineering vehicles such as a contact net operation vehicle and a detection vehicle, and continuous and high-precision detection of the contact net/line abrasion of the electrified railway can be completed only by opening the detection device.
Referring to fig. 4, a contact wire abrasion rapid measurement system comprises a roof collecting device, an in-vehicle detection device and a vehicle bottom device, wherein the roof collecting device comprises a high-definition area array industrial digital camera and a wire laser, the in-vehicle detection device comprises a detection host and an electric controller, and the vehicle bottom device comprises a speed sensor; one end of the electric controller is connected with a vehicle power supply, the other end of the electric controller is respectively connected with the high-definition area array industrial digital camera, the line laser, the detection host and the speed sensor through power lines, the high-definition area array industrial digital camera is connected with the detection host through an optical fiber network line and used for transmitting acquired image data to the detection host to perform contact line abrasion calculation, the speed sensor is connected with the detection host through a signal line, and the detection host is a computer.
Specifically, the system carries out continuous and high-precision detection on the contact net/wire abrasion, associates the detection data with the system positioning, and establishes contact wire abrasion detection data associated with the detection line name, the line category, the interval, the kilometer post and the support column number; storing high-definition video of the cross section of the contact network in real time; and the multi-dimensional positioning algorithms such as positioning of a contact network positioning device, positioning of a contact network anchor section characteristic structure, speed mileage positioning and the like are adopted to improve accurate positioning for the detection system.
The processing method of the system comprises the following steps:
s1: the method comprises the steps of collecting images, wherein a contact wire abrasion measuring device adopts a light-cutting method measuring assembly, a single group of contact wire abrasion measuring line laser and a digital camera form a measuring triangle, a cross section high-definition image of a contact wire is collected upwards, and the cross section high-definition image of the contact wire is transmitted to an in-vehicle detection host through an optical fiber;
s2: abrasion measurement, measurement software collects high-definition images of a contact network and processes the images:
s21: firstly, carrying out binarization processing on an image Blob block, then screening the Blob block according to the width, height, size and other Blob attributes of the minimum external rectangle of the Blob, and identifying the Blob block where a contact wire is located by utilizing an edge template matching image processing algorithm;
s22: calculating the gravity center coordinate of the laser stripe by using a gray value gravity center algorithm for a contact line Blob block, identifying the outline pixel coordinate of the contact line wearing cross section, and identifying the contact line wearing inflection point pixel coordinate;
s23: converting the two-dimensional pixel coordinates into horizontal and vertical coordinate values of a world coordinate system according to internal and external reference calibration parameters of the abrasion detection device;
s24: calculating the abrasion width L of the bottom surface of the contact wire according to the coordinate values of the horizontal direction and the vertical direction of the world coordinate system; the circle center position and radius R of the contact line are calculated by using a circle fitting algorithm, so as to obtain the residual height value H (or worn height value H) of the contact line, as shown in fig. 5,
abrasion height: h = R-sqrt (R-1/4L)
Remaining height: h = R + sqrt (R × R-1/4L × L);
s25: and data of the two groups of abrasion measuring devices are spliced and stored.
In the above embodiments, the basic principle and the main features of the present invention and the advantages of the present invention have been described. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only illustrative of the principles of the present invention, and that modifications and variations can be made by those skilled in the art without departing from the spirit and scope of the present invention, which should be construed as within the scope of the appended claims.
Claims (6)
1. The contact line abrasion rapid measuring device comprises a vehicle roof (1) and is characterized in that a fixing table (3) is arranged on the vehicle roof (1), a plurality of groups of mounting frames (2) are arranged on two sides, parallel to contact lines (9), of the fixing table (3), a fixing rod (4) is arranged between every two groups of mounting frames (2), a plurality of groups of laser fixing rods (5) are arranged on the fixing rod (4), lasers (6) and camera fixing rods (7) are arranged on the laser fixing rods (5), a plurality of cameras (8) are arranged on the camera fixing rods (7), the cameras (8) upwards collect cross section images of the contact lines (9), the cameras (8) and the lasers (6) correspond to one another one to form light cutting measuring assemblies, and each group of light cutting measuring assemblies and the contact lines (9) form a measuring triangle.
2. The contact line wear rapid measuring device of claim 1, wherein the laser fixing bar (5) is arranged in a direction perpendicular to the fixing bar (4).
3. The contact line wear rapid measuring device of claim 1, wherein the camera fixing rod (7) is arranged perpendicular to the laser fixing rod (5).
4. The contact line abrasion rapid measuring device according to claim 1, further comprising an in-vehicle device and a vehicle bottom device, wherein the in-vehicle device comprises a detection host and an electric controller, the detection host is connected with the camera (8) through an optical fiber, the electric controller is respectively connected with the detection host, the camera (8) and the laser (6) through power lines, the vehicle bottom device comprises a speed sensor, the speed sensor is connected with the detection host through a signal line, and the speed sensor is connected with the electric controller through a power line.
5. The contact line wear rapid measuring device according to claim 1, wherein the camera (8) is a high definition area array industrial digital camera.
6. A contact line wear rapid measuring device as claimed in claim 1, wherein said laser (6) employs a line laser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121008113.8U CN214893085U (en) | 2021-05-12 | 2021-05-12 | Contact wire abrasion rapid measuring device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121008113.8U CN214893085U (en) | 2021-05-12 | 2021-05-12 | Contact wire abrasion rapid measuring device |
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| CN214893085U true CN214893085U (en) | 2021-11-26 |
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| CN202121008113.8U Active CN214893085U (en) | 2021-05-12 | 2021-05-12 | Contact wire abrasion rapid measuring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117029696A (en) * | 2023-10-08 | 2023-11-10 | 天津津铁供电有限公司 | Abrasion detection method and detection equipment for rigid suspension contact net |
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2021
- 2021-05-12 CN CN202121008113.8U patent/CN214893085U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117029696A (en) * | 2023-10-08 | 2023-11-10 | 天津津铁供电有限公司 | Abrasion detection method and detection equipment for rigid suspension contact net |
| CN117029696B (en) * | 2023-10-08 | 2024-01-02 | 天津津铁供电有限公司 | Abrasion detection method and detection equipment for rigid suspension contact net |
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Address after: 610000 floor 1, floor 2, building 1, No. 38, Jinke South Road, Jinniu high tech Industrial Park, Chengdu, Sichuan Patentee after: CHENGDU GONGWANG TECHNOLOGY CO.,LTD. Patentee after: CHINA RAILWAY ELECTRIFICATION BUREAU (GROUP) Co.,Ltd. Patentee after: CREC EEB OPERATION MAINTENANCE CO.,LTD. Address before: No. 706, 7th floor, building 4, No. 2, Xingsheng West Road, high tech Industrial Park, Jinniu District, Chengdu, Sichuan 610036 Patentee before: CHENGDU GONGWANG TECHNOLOGY CO.,LTD. Patentee before: CHINA RAILWAY ELECTRIFICATION BUREAU (GROUP) Co.,Ltd. Patentee before: CREC EEB OPERATION MAINTENANCE CO.,LTD. |
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