CN220180774U - Vehicle-mounted contact net tension compensation device state detection system - Google Patents
Vehicle-mounted contact net tension compensation device state detection system Download PDFInfo
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- CN220180774U CN220180774U CN202321640978.5U CN202321640978U CN220180774U CN 220180774 U CN220180774 U CN 220180774U CN 202321640978 U CN202321640978 U CN 202321640978U CN 220180774 U CN220180774 U CN 220180774U
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Abstract
The utility model discloses a state detection system of a vehicle-mounted contact net tension compensation device, which relates to the technical field of contact net detection and comprises a detection vehicle, a camera module, a positioning module and a control host; the detection vehicle is arranged on the track and can move on the track; the camera modules are arranged on the detection vehicle and provided with a plurality of camera modules, the shooting ends of the camera modules face the contact net tension compensation device, and the camera modules collect image information of the contact net tension compensation device and send the image information to the control host; the positioning module is arranged on the detection vehicle, and is used for positioning the position information of the detection vehicle and sending the position information to the control host; the control host is installed on the detection vehicle and is electrically connected with the detection vehicle, the camera module and the positioning module respectively. The detection car moves and detects simultaneously, and the contact net tension compensation device of the whole line can be detected by using a detection system, so that the mobile detection flexibility of the detection car is higher.
Description
Technical Field
The utility model relates to the technical field of contact net detection, in particular to a state detection system of a vehicle-mounted contact net tension compensation device.
Background
The operating kinetic energy of the electrified railroad locomotive is provided by electricity, which is obtained from the contact line through the pantograph of the roof. In the running process of the train, in order to ensure that the pantograph and the contact line can be well contacted and further achieve a better power receiving effect, the contact line and the bearing rope are usually required to be in a tight state.
The tension compensator for contact net is also called as automatic tension compensator for contact net and is one kind of mechanical device comprising mainly weight, weight rod, compensating rope, ratchet wheel, etc. installed to the two ends of the anchor section of contact net and connected to the contact line and the carrier rope separately. The tension of the contact line and the carrier cable is in a certain range under the action of gravity of the weight, and the contact line and the carrier cable cannot be too tight or too loose. Along with the change of weather temperature, the contact line and the carrier rope can be lengthened and shortened, and the height of the bottom surface of the lowest weight of the weight string connected with the contact line and the carrier rope from the ground, namely the value b, can be reduced or increased.
The tension compensation device at the anchor section of the contact net is an important infrastructure for automatically adjusting the tension of the contact line and the carrier rope and keeping the tension constant, but the tension compensation device has the problems of clamping stagnation, failure of the compensation device and the like in long-time use, and the tension compensation device needs to be detected regularly in order to find the compensation state of the tension compensation device in time.
The traditional detection mode mainly relies on the manual work to patrol and examine every compensation arrangement regularly, and intensity of labour is big, and detection efficiency is low. In the current stage, fixed-point type detection equipment (such as a railway contact net tension compensation device a/b value monitoring device and system with publication number of CN 209820444U) is added at the compensation device, and although the monitoring of the contact line and carrier rope tension compensation b value can be realized, the real-time monitoring of the states of all the tension compensation devices is realized due to the large number of whole-line anchor segments, a plurality of monitoring devices are needed, and the equipment cost is extremely high. Therefore, the traditional technology lacks flexibility, cannot realize detection of a plurality of compensation devices, and can only carry out fixed-point real-time monitoring on a single device.
Disclosure of Invention
In order to overcome the defects in the prior art, the utility model aims to provide a vehicle-mounted contact net tension compensation device state detection system so as to solve the problem of lack of flexibility in the prior art. According to the utility model, the camera module, the positioning module and the control host are arranged on the detection vehicle, so that the detection vehicle can detect the movement of the vehicle and the contact net tension compensation device of the whole line by using one detection system, the detection vehicle has higher mobile detection flexibility, and the equipment cost is lower.
In order to achieve the above purpose, the present utility model adopts the technical scheme that:
a state detection system of a vehicle-mounted contact net tension compensation device comprises a detection vehicle, a camera module, a positioning module and a control host;
the detection vehicle is arranged on the track and can move on the track; the camera modules are arranged on the detection vehicle and provided with a plurality of camera modules, the shooting ends of the camera modules face the contact net tension compensation device, and the camera modules collect image information of the contact net tension compensation device and send the image information to the control host; the positioning module is arranged on the detection vehicle, and is used for positioning the position information of the detection vehicle and sending the position information to the control host; the control host is arranged on the detection vehicle, is electrically connected with the detection vehicle, the camera module and the positioning module respectively, and receives and processes the image information and the position information.
Preferably, the system further comprises a temperature detection module arranged on the detection vehicle, wherein the temperature detection module is electrically connected with the control host, and detects temperature information near the contact net tension compensation device and sends the temperature information to the control host.
Preferably, the speed detection device further comprises a speed detection module arranged at the bottom of the detection vehicle, wherein the speed detection module is electrically connected with the control host, and the speed detection module is used for collecting and detecting the running speed of the vehicle and sending running speed information to the control host.
Preferably, the camera modules are linear array cameras, four linear array cameras are arranged in a left-right mode, and in the two linear array cameras on the same side, the two linear array cameras are arranged up and down.
Preferably, the temperature detection module is a temperature sensor.
Preferably, the speed detection module is a speed sensor.
The utility model has the beneficial effects that:
the vehicle-mounted contact net tension compensation device state detection system provided by the utility model is integrated on the detection vehicle capable of moving on the track, and the detection vehicle is used for detecting the movement of the contact net while the detection vehicle is moving, so that compared with the detection device in the prior art, the vehicle-mounted contact net tension compensation device state detection system only can carry out fixed-point real-time monitoring on a single contact net tension compensation device and needs a plurality of detection devices for detecting the whole line anchor section, the vehicle-mounted contact net tension compensation device state detection system can detect the contact net tension compensation device of the whole line by utilizing one movable detection system, and has the advantages of higher movable detection flexibility and lower equipment cost.
Drawings
FIG. 1 is a schematic diagram of a status detection system of the present utility model;
FIG. 2 is a schematic diagram of an installation layout of a device of the status detection system of the present utility model;
FIG. 3 is a schematic diagram of a 2-bit end detection scheme in FIG. 2 according to the present utility model;
FIG. 4 is a schematic diagram of a 1-bit end detection scheme in FIG. 2 according to the present utility model;
FIG. 5 is a flow chart of a status detection method of the present utility model;
FIG. 6 is a diagram showing the detection decision basis of the compensation device of the present utility model;
reference numerals:
1. detecting a vehicle; 2. a camera module; 3. a positioning module; 4. a control host; 41. the acquisition control and data processing module; 42. a data analysis module; 43. a multifunctional management module; 5. a temperature detection module; 6. and a speed detection module.
Detailed Description
The conception, specific structure, and technical effects produced by the present utility model will be clearly and completely described below with reference to the embodiments and the drawings to fully understand the objects, features, and effects of the present utility model.
Example 1
A state detection system of a vehicle-mounted contact net tension compensation device is shown in fig. 1, and comprises a detection vehicle 1, a camera module 2, a positioning module 3 and a control host 4;
the detection vehicle 1 is arranged on a track and can move on the track; the camera modules 2 are arranged on the detection vehicle 1 and provided with a plurality of camera modules 2, the shooting ends of the camera modules face the contact net tension compensation device, and the camera modules collect image information of the contact net tension compensation device and send the image information to the control host 4; the positioning module 3 is arranged on the detection vehicle 1, and the positioning module 3 positions the position information of the detection vehicle 1 and sends the position information to the control host 4; the control host 4 is mounted on the inspection vehicle 1, and is electrically connected with the inspection vehicle 1, the camera module 2 and the positioning module 3, respectively, receives the image information and the position information, and processes them.
In this embodiment, the camera module 2 is configured to capture an image of the contact net tension compensation device, so as to detect a state of the contact net tension compensation device according to the image; the positioning module 3 is used for positioning the position of the detection vehicle; the control host 4 is used to control the operation of the state detection system.
In this embodiment, the detection system is integrated on the detection vehicle 1 capable of moving on the track, and the detection vehicle 1 detects while moving, so that compared with the detection device in the prior art, the detection device only can perform fixed-point real-time monitoring on a single contact net tension compensation device and needs a plurality of detection devices for detecting the whole line anchor section, the detection device can detect the contact net tension compensation device of the whole line by using one mobile detection system, and has the advantages of higher mobile detection flexibility and lower equipment cost. The camera module 2 collects the image information of the contact net tension compensation device and transmits the image information to the control host 4, so that the state of the contact net tension compensation device can be observed on the control host 4 in a visual way.
As a preferred implementation of this example, as shown in fig. 1, the temperature detection module 5 mounted on the detection vehicle 1 is further included, the temperature detection module 5 is electrically connected with the control host 4, and the temperature detection module 5 detects temperature information near the catenary tension compensation device and sends the temperature information to the control host 4. The temperature detection module 5 may be a temperature sensor, and is configured to detect temperature information near the tension compensation device of the catenary, so as to detect the b value of the tension compensation device of the catenary at different temperatures.
As a preferred implementation manner of this embodiment, the vehicle speed detecting device further comprises a speed detecting module 6 installed at the bottom of the detecting vehicle 1, the speed detecting module 6 is electrically connected with the control host 4, and the speed detecting module 6 collects and detects the running speed of the vehicle 1 and sends running speed information to the control host 4. The speed detection module 6 may be a speed sensor, and the purpose of detecting the running speed of the vehicle by using the speed sensor is to: the running speed of the current detection vehicle is monitored, the monitoring result is transmitted to the control host, and the running distance of the vehicle can be calculated through the running speed and time, so that data support is provided for the positioning module.
As a preferred implementation manner of this embodiment, the control host 4 includes an acquisition control and data processing module 41, a data analysis module 42 and a multifunctional management module 43 that are sequentially connected, and the acquisition control and data processing module 41 is electrically connected to the camera module 2, the temperature detection module 5, the positioning module 3 and the speed detection module 6, respectively. In this embodiment, the acquisition control and data processing module 41 is used for data front end acquisition, control, data transmission, etc., the data analysis module 42 is used for data storage, defect analysis, anomaly early warning, etc., and the multifunctional management module 43 is used for data defect management, data statistics, report export, data archiving, etc.
As a preferred implementation manner of the present embodiment, the camera modules 2 are line cameras, which are provided with four line cameras and are arranged in pairs from left to right, and in two line cameras on the same side, two line cameras are arranged up and down. In this embodiment, the four line cameras are arranged in pairs from left to right, that is, two line cameras are disposed at the left end and the right end of the detection vehicle, so as to shoot the states of the contact net tension compensation devices at the left side and the right side of the track. Because the coverage area of the contact net tension compensation device in the vertical direction is larger, the field of view of a single linear array camera cannot cover the compensation device, two linear array cameras are required to be configured and arranged one above the other, and therefore the compensation device is fully covered and shot.
In this embodiment, as shown in fig. 2, 3 and 4, 4 LQ line camera modules and 1 temperature sensor are installed outside the vehicle, and due to the limitation of the installation conditions of the detection vehicle, 2 line camera modules are installed at the a and B positions in the figure respectively, the temperature sensor is installed at the C position in the figure, a control host is placed in the vehicle, and a speed sensor is installed at the bottom of the vehicle to measure and detect the running speed of the vehicle.
The inspection vehicle 1 of the present embodiment may be a conventional inspection vehicle traveling on a train running track in the prior art; the camera module 2, the positioning module 3, the control host 4, the temperature detection module 5 and the speed detection module 6 are all conventional devices in the prior art, and the specific structure of the device is not improved in the embodiment, so that the device can be purchased to realize the functions in the existing model on the existing market.
According to the embodiment, a linear array camera scanning scheme is adopted, a positioning module is combined to conduct linear scanning imaging on a compensation device, the mapping relation between a pixel coordinate system and an actual coordinate system is converted through a mark line drawn in advance on the compensation device, the bottom surface of a balance weight in an image is identified through an algorithm, and therefore the height (namely, a value b) of the bottom surface of the balance weight from the ground is calculated. Because the value of the compensation device b can change along with the temperature, the value of the compensation device b at the same position needs to be measured for multiple times at different temperatures, the designed value of the compensation device b at the corresponding temperature is introduced, and the change trend of the value of the b measured by the detection system along with the temperature is compared with the designed value to judge whether the state of the compensation device is normal or not, and the specific detailed method is shown in the embodiment 2.
Example 2
Based on the state detection system of embodiment 1, the embodiment provides a method for detecting the state of a vehicle-mounted contact net tension compensation device, as shown in fig. 5, including the following steps:
s1, a starting state detection system performs parameter configuration, and detects that a detection vehicle moves on a track;
in the step S1, the positioning module collects the position information of the detection vehicle and sends the position information to the control host when the detection vehicle moves, and the speed detection module collects the running speed of the detection vehicle and sends the running speed information to the control host.
S2, the camera module of the state detection system is in a state of data to be acquired;
s3, judging whether the state detection system enters an anchor segment joint, if so, entering a step S4, and if not, returning to the step S2;
s4, a camera module of the state detection system starts to collect data, the collected data is sent to a control host, the control host processes the collected data, and a value b of the height of the bottom surface of the weight of the current contact net tension compensation device from the ground is output;
in the step S4, a camera module is combined with a positioning module to conduct line scanning imaging on the contact net tension compensation device, a mapping relation between a pixel coordinate system and an actual coordinate system is converted through a mark line drawn in advance on the contact net tension compensation device, the bottom surface of a weight in an image is identified through a deep learning target detection algorithm, and a value b of the height of the bottom surface of the weight from the ground is calculated.
In the utility model, for the image collected by the camera module, the control host computer carries out image processing on the image, and a deep learning target detection algorithm is adopted to carry out positioning identification on the balance weight and the bottom reference object, so as to determine the corresponding relation between the image coordinate and the world coordinate. And extracting white key points at the bottom of the image by adopting a median filtering, edge detection and threshold segmentation algorithm, and calculating a value b by combining image positioning information.
In the step S4, the control host processes the collected image data, and the image processing includes the following steps:
s41, preprocessing the acquired image data, wherein the preprocessing comprises denoising and downsampling by adopting a median filtering algorithm;
in the above steps, the purpose of denoising and downsampling by adopting the median filtering algorithm is to improve the information such as the image brightness.
S42, labeling the pendant, the anchor ear and the support column in the preprocessed image data, and constructing a Yolov8 target detection model according to labeling information;
in the above steps, manual labeling can be adopted, and the information of the pendant, the anchor ear and the support column is mainly labeled, so that the purpose of manually labeling the information of the pendant, the anchor ear and the support column is to construct a training data set for algorithm image recognition.
S43, identifying a pendant, a hoop and a support in an image to be detected by utilizing a Yolov8 target detection model;
s44, extracting the anchor ear and the falling mass edge information in the image to be detected by using a Laplace edge detection algorithm, and calculating the size of a unit pixel and the current falling mass position information;
in the above steps, the height of the anchor ear is known, and the size of the unit pixel can be calculated by combining the number of pixels occupied in the height direction of the anchor ear. The hoop is arranged on the pendant string.
S45, detecting bottom key points of the image to be detected by using an ORB special matching algorithm;
in the step, a mark is manually arranged on the weight limiting rod in advance, and the distance between the mark and the ground is a fixed value, wherein the mark is the bottom key point in the step.
S46, calculating the number of pixels from the bottom key point to the bottom of the balance weight, multiplying the number of pixels from the bottom key point to the bottom of the balance weight by the unit pixel size calculated in the step S44 to obtain the distance between the bottom of the balance weight and the bottom key point, and adding the distance between the bottom key point and the ground to obtain the value of the height b of the bottom surface of the balance weight from the ground.
S5, judging whether the state detection system leaves the anchor section joint, if so, entering a step S6, and if not, returning to the step S4;
s6, stopping collecting data by a camera module of the state detection system;
and S7, judging whether the state detection task of the contact net tension compensation device is finished, if so, stopping detection, otherwise, returning to the step S2 to perform state detection of the contact net tension compensation device of the next anchor section joint.
S8, measuring the b value of the contact net tension compensation device at the same position for multiple times at different temperatures according to the steps S1-S7, and introducing the contact net tension compensation device design b at the corresponding temperature Is provided with The value is obtained by designing b according to the change trend of the b value measured by the state detection system along with the temperature Is provided with And comparing and analyzing the values, judging whether the state of the contact net tension compensation device is normal or not, and outputting the result.
When the change trend of b along with the temperature does not accord with the change trend of the design value, the contact net tension compensation device is blocked;
when b does not change along with the temperature change, the contact net tension compensation device is blocked.
In this embodiment, since the value of the b value of the contact net tension compensation device varies with temperature, the value of the b value of the contact net tension compensation device at the same place needs to be measured at different temperatures for multiple times, and the design value of the compensation device at the corresponding temperature is introduced, and the change trend of the b value measured by the state detection system along with temperature is compared with the design value to determine whether the state of the contact net tension compensation device is normal.
In this embodiment, the b value detection of the whole-line contact net tension compensation device is rapidly realized, the b value comparison of the contact net tension compensation device under different temperatures is provided, and meanwhile, faults such as clamping stagnation and clamping death of the tension compensation device are judged through the change trend of the b value, so that the constant tension of the railway contact net is ensured.
The technical characteristics of this embodiment are as follows:
(1) Anchor segment joint positioning
In the running process of the detection system, the specific anchor segment joint information in the database is used as a judgment basis for detecting the opening data of the linear array camera of the compensation device, as shown in fig. 6:
1) When the detection vehicle runs to the anchor section joint, the camera starts to work, acquires images and processes data;
2) When the detection vehicle runs to the middle support column, the camera stops working, data are not collected, and the positioning function of the detection system is reserved.
(2) Image processing
In the embodiment, a deep learning target detection algorithm is adopted to conduct positioning identification on the balance weight and the bottom reference object, and the corresponding relation between the image coordinates and the world coordinates is determined.
In the embodiment, white key points at the bottom of the image are extracted by adopting a median filtering, edge detection and threshold segmentation algorithm, and the value b is calculated by combining image positioning information.
While the embodiments of the present utility model have been described in detail, the present utility model is not limited to the embodiments described above, and various equivalent modifications and substitutions can be made by those skilled in the art without departing from the spirit of the present utility model, and these are intended to be included in the scope of the present utility model as defined in the appended claims.
Claims (6)
1. The state detection system of the vehicle-mounted contact net tension compensation device is characterized by comprising a detection vehicle (1), a camera module (2), a positioning module (3) and a control host (4);
the detection vehicle (1) is arranged on a track and can move on the track; the camera modules (2) are arranged on the detection vehicle (1) and provided with a plurality of camera modules (2), the shooting ends of the camera modules face the contact net tension compensation device, and the camera modules acquire image information of the contact net tension compensation device and send the image information to the control host (4); the positioning module (3) is arranged on the detection vehicle (1), and the positioning module (3) is used for positioning the position information of the detection vehicle (1) and sending the position information to the control host (4); the control host (4) is installed on the detection vehicle (1), is electrically connected with the detection vehicle (1), the camera module (2) and the positioning module (3) respectively, and receives and processes the image information and the position information.
2. The state detection system according to claim 1, further comprising a temperature detection module (5) mounted on the detection vehicle (1), the temperature detection module (5) being electrically connected to the control host (4), the temperature detection module (5) detecting temperature information in the vicinity of the catenary tension compensation device and transmitting the temperature information to the control host (4).
3. The state detection system according to claim 1, further comprising a speed detection module (6) mounted at the bottom of the detection vehicle (1), the speed detection module (6) being electrically connected to the control host (4), the speed detection module (6) collecting the operation speed of the detection vehicle (1) and transmitting the operation speed information to the control host (4).
4. The status detection system according to claim 1, wherein the camera module (2) is a line camera, the line cameras are arranged in four and two by two, and two line cameras are arranged one above the other in two line cameras on the same side.
5. A status detection system according to claim 2, wherein the temperature detection module (5) is a temperature sensor.
6. A state detection system according to claim 3, characterized in that the speed detection module (6) is a speed sensor.
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| CN202321640978.5U CN220180774U (en) | 2023-06-27 | 2023-06-27 | Vehicle-mounted contact net tension compensation device state detection system |
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| CN202321640978.5U CN220180774U (en) | 2023-06-27 | 2023-06-27 | Vehicle-mounted contact net tension compensation device state detection system |
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