CN211139348U - Railway vehicle wheel pair diameter dynamic detection system - Google Patents
Railway vehicle wheel pair diameter dynamic detection system Download PDFInfo
- Publication number
- CN211139348U CN211139348U CN201921673875.2U CN201921673875U CN211139348U CN 211139348 U CN211139348 U CN 211139348U CN 201921673875 U CN201921673875 U CN 201921673875U CN 211139348 U CN211139348 U CN 211139348U
- Authority
- CN
- China
- Prior art keywords
- camera
- light source
- axle
- wheel
- diameter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Length Measuring Devices By Optical Means (AREA)
Abstract
A dynamic detection system for the diameter of a railway vehicle wheel set relates to a railway vehicle wheel set detection technology and aims to solve the problems that the existing manual detection method is high in working strength, low in working efficiency and incapable of detecting the diameter of a running train wheel set in real time. The light source and the camera are arranged between two steel rails and between two adjacent sleepers; the camera is used for acquiring an axle curve image formed by the light source irradiating on the axle; the light source is used as a compensation light source of the camera; the wheel sensor is arranged on the side wall of the rail, and the vehicle firstly passes through the wheel sensor and then passes through the light source and the camera; the wheel set position information is used as a trigger signal of the camera; and after the camera acquires the image, the computer processes the image to acquire the diameter data of the vehicle wheel pair. The method has the beneficial effects that the diameter of the running train wheel set is detected in real time.
Description
Technical Field
The utility model relates to a railway vehicle wheel pair detection technology.
Background
With the development of railway transportation towards high speed, high density and heavy load, the wear of the tread and the wheel rim of the vehicle wheel is increasingly serious, so that the diameter of the wheel is changed, the matching relation between the wheel and the steel rail is changed, the damage of the train wheel set structural component is aggravated, the higher railway transportation cost is caused, and the railway transportation safety is directly influenced. In order to ensure the running safety of the train, the railway department stipulates that the running train needs to detect the wheel state regularly so as to determine the overhaul or the scrapping of the wheels.
The diameter of the vehicle wheel set is an important parameter of train wheel state data, and because the size of the train wheel set is large, the diameters of wheel sets of different types have large difference, and the diameter is difficult to be directly measured by a common measuring tool; at present, the measurement aspect of the vehicle wheel set still stays in a static measurement stage, the static measurement stage is used for measuring when the vehicle stops in an operation field, manual measurement is adopted, the manual measurement is high in working strength and low in working efficiency, and the static measurement cannot detect the diameter of the running train wheel set in real time.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem that current artifical manual detection method working strength is big, and work efficiency is low and can't detect the train wheel pair diameter in operation in real time, provides a rail vehicle wheel pair diameter dynamic verification system.
The utility model discloses a railway vehicle wheel pair diameter dynamic detection system, which comprises a wheel sensor, a light source and a camera;
the light source and the camera are respectively arranged between the two steel rails and are simultaneously positioned between the two adjacent sleepers; the camera is used for acquiring an axle curve image formed by the light source irradiating on the axle; the wheel sensors are arranged on the side walls of the steel rails to acquire wheel set position information, and ensure that a vehicle passes through the light sources and the cameras after passing through the wheel sensors preferentially; the wheel set position information is used as a trigger signal of the camera;
and the camera acquires an axle curve image formed by irradiating the light source on the axle, and then the axle curve image is processed by the computer to further acquire diameter data of the vehicle wheel pair.
The beneficial effects of the utility model are that realized detecting the train wheel pair diameter in service in real time, abandoned current artifical manual detection method completely to this dynamic detection system is owing to set up light source and camera, consequently has the interference of anti fog, rain, snow, sand and dust and sunshine, and this dynamic detection system can normal operating under abominable weather, and this dynamic detection system hardware is reliable and stable simultaneously, has the advantage of standardization, modularization and integration.
Drawings
Fig. 1 is a schematic structural diagram of a dynamic detection system for wheel pair diameters of railway vehicles according to a first embodiment;
fig. 2 is a schematic diagram illustrating a first embodiment of determining an actual coordinate value in space corresponding to each pixel on a camera.
Detailed Description
The first embodiment is as follows: the embodiment is described with reference to fig. 1 and 2, and the dynamic detection system for the wheel pair diameter of the railway vehicle comprises a wheel sensor 3, a light source 4 and a camera 5;
the light source 4 and the camera 5 are respectively arranged between the two steel rails 1 and are simultaneously positioned between the two adjacent sleepers 2; the light source 4 emits light to irradiate on the axle, and the camera 5 is used for acquiring an axle curve image formed by the light source 4 irradiating on the axle; the wheel sensors 3 are arranged on the side walls of the steel rails 1 to acquire wheel set position information, and ensure that a vehicle passes through the light sources 4 and the cameras 5 after passing through the wheel sensors 3 preferentially; the wheel set position information is used as a trigger signal of the camera 5;
and the camera 5 acquires an axle curve image formed by irradiating the axle by the light source 4, and then the diameter data of the vehicle wheel pair is acquired by processing the axle curve image through a computer.
In the present embodiment, the light source 4 is used as a compensation light source of the camera 5, so that the bottom image of the axle acquired by the camera 5 is clear; a camera protection box is additionally arranged outside the camera 5 for protecting the camera 5, and a light source protection box is additionally arranged outside the light source 4 for protecting the light source 4; the camera protection box and the light source protection box can enable the dynamic detection system to have the capability of resisting interference of fog, rain, snow, sand and dust and sunlight.
In the present embodiment, the camera 5 is an area-array camera.
In the present embodiment, the irradiation direction of the light source 4 is vertically upward;
the camera 5 is placed obliquely so that the light source 4 and the focal point of the camera 5 converge at the axle.
In the embodiment, the processing method of the computer for acquiring the axle curve image formed by irradiating the axle with the light source (4) by the camera 5 comprises the following steps: and (3) converting an axle curve image formed by irradiating the axle with the light source 4 acquired by the camera 5 into an actual coordinate value in space, and determining the circle center and the radius of the axle.
In the present embodiment, the conversion of the axle curve image formed by the light source 4 irradiated on the axle acquired by the camera 5 into the actual coordinate values in space is realized by the following steps:
step one, establishing a step-shaped calibration object 6, and inversely placing the step-shaped calibration object 6 right above a light source 4, wherein the height of the step-shaped calibration object is the same as that of an axle when a vehicle runs, so that a laser light source 8 can vertically irradiate on the calibration object 7;
step two, shooting the step-shaped calibration object 6 established in the step one through a camera 5 to obtain a step-shaped curve;
step three, determining an actual coordinate value in the space corresponding to each pixel on the camera 5 according to the trapezoid curve obtained in the step two, and storing the actual coordinate value in the space corresponding to each pixel on the camera 5 in a computer;
and step four, converting the bottom image of the axle acquired by the camera 5 into an actual coordinate value in space by using the pixels occupied by the axle curve acquired by the camera 5.
The dynamic detection system for the diameter of the wheel pair of the railway vehicle can automatically detect the diameter of the wheel pair of the vehicle, and in consideration of the possible difference of the diameters of the left wheel pair and the right wheel pair, two cameras 5 are adopted to respectively detect the wheel pair of the vehicle, two light sources 4 are simultaneously set up to respectively serve as respective compensation light sources for the two cameras 5, and the brightness of the two cameras 5 is ensured to be consistent; the dynamic detection system is applicable to vehicle speed: 0-120 km/h; the method can adapt to normal detection during train speed regulation; the detection of 256 marshalling trains can be met without missing detection; is suitable for 50kg/m, 60kg/m and 75kg/m steel rails.
Claims (3)
1. A railway vehicle wheel set diameter dynamic detection system is characterized by comprising a wheel sensor (3), a light source (4) and a camera (5);
the light source (4) and the camera (5) are respectively arranged between the two steel rails (1) and are simultaneously positioned between the two adjacent sleepers (2); the light source (4) emits light to irradiate the axle, and the camera (5) is used for acquiring an axle curve image formed by the light source (4) irradiating the axle; the wheel sensors (3) are arranged on the side walls of the steel rails (1) to acquire wheel set position information, and the condition that a vehicle passes through the light sources (4) and the cameras (5) after passing through the wheel sensors (3) preferentially is guaranteed; the wheel set position information is used as a trigger signal of a camera (5);
and the camera (5) acquires an axle curve image formed by irradiating the axle by the light source (4), and then the diameter data of the vehicle wheel pair is acquired by processing the axle curve image through a computer.
2. A railway vehicle wheel-pair diameter dynamic detection system according to claim 1, characterized in that the camera (5) is an area-array camera.
3. A railway vehicle wheel-pair diameter dynamic detection system according to claim 1, characterized in that the irradiation direction of the light source (4) is vertical and upward;
the camera (5) is obliquely arranged, and the focuses of the light source (4) and the camera (5) are converged at the axle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921673875.2U CN211139348U (en) | 2019-10-08 | 2019-10-08 | Railway vehicle wheel pair diameter dynamic detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921673875.2U CN211139348U (en) | 2019-10-08 | 2019-10-08 | Railway vehicle wheel pair diameter dynamic detection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211139348U true CN211139348U (en) | 2020-07-31 |
Family
ID=71767668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921673875.2U Active CN211139348U (en) | 2019-10-08 | 2019-10-08 | Railway vehicle wheel pair diameter dynamic detection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211139348U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110562292A (en) * | 2019-10-08 | 2019-12-13 | 哈尔滨市科佳通用机电股份有限公司 | railway vehicle wheel pair diameter dynamic detection system |
| CN112504379A (en) * | 2020-10-13 | 2021-03-16 | 中国神华能源股份有限公司哈尔乌素露天煤矿 | Real-time detection device and detection method for coal flow volume |
-
2019
- 2019-10-08 CN CN201921673875.2U patent/CN211139348U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110562292A (en) * | 2019-10-08 | 2019-12-13 | 哈尔滨市科佳通用机电股份有限公司 | railway vehicle wheel pair diameter dynamic detection system |
| CN110562292B (en) * | 2019-10-08 | 2024-04-16 | 哈尔滨市科佳通用机电股份有限公司 | Dynamic detection system for diameter of railway vehicle wheel set |
| CN112504379A (en) * | 2020-10-13 | 2021-03-16 | 中国神华能源股份有限公司哈尔乌素露天煤矿 | Real-time detection device and detection method for coal flow volume |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110562292B (en) | Dynamic detection system for diameter of railway vehicle wheel set | |
| CN100480627C (en) | Steel rail wearing integrative parameter vehicle-mounted dynamic measuring device and method | |
| US10088300B2 (en) | System and method for inspecting the geometric parameters of the wheels of railway vehicles | |
| CN211139348U (en) | Railway vehicle wheel pair diameter dynamic detection system | |
| CN107401979B (en) | Vehicle body vibration displacement compensation device and method for catenary detection | |
| CN109238756B (en) | Dynamic image detection equipment and detection method for freight car operation fault | |
| CN105203552A (en) | 360-degree tread image detecting system and method | |
| US20040095585A1 (en) | Wheel profile inspection apparatus and method | |
| CN109242035B (en) | Vehicle bottom fault detection device and method | |
| CN102060037A (en) | Online dynamic detection device of all-periphery contour dimension of locomotive wheel pair | |
| CN102954871A (en) | Motor train unit bogie assembling test flow line maintenance system and maintenance method thereof | |
| CN113466247B (en) | Rail weld detection method and system based on inertial technology and machine vision fusion | |
| CN206155453U (en) | Track inspection car | |
| CN113295137A (en) | Road unevenness identification method based on vehicle wheel speed fluctuation | |
| CN114543661A (en) | Subway vehicle 360-degree image detection system and detection method thereof | |
| CN113295094B (en) | Pantograph dynamic envelope intrusion detection method, device and system | |
| CN107621229B (en) | Real-time railway track width measurement system and method based on area array black-and-white camera | |
| CN210191489U (en) | Locomotive signal receiving coil image shooting system | |
| CN116380928A (en) | Non-contact bow net hard point detection method and system | |
| CN112945976B (en) | Method and device for detecting contact fatigue crack of steel rail | |
| CN211308598U (en) | Railway vehicle wheel set size dynamic detection system | |
| CN110341748B (en) | Image shooting system for locomotive signal receiving coil | |
| CN114659457A (en) | Track gauge dynamic measurement method based on structured light | |
| CN113074655B (en) | Dynamic image wheel out-of-roundness monitoring method | |
| CN203950437U (en) | A kind of simple and easy vehicle wheelmark distribution monitoring device for bridge track |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |