Train image scanning and wheel set size measurement fusion detection device

Abstract

The invention discloses a device for fusion detection of train image scanning and wheel set size measurement, which enables the overall structure of the device to be compact, does not obviously increase the size, and solves the problems of land occupation, cost and complex management caused by respective installation of two types of equipment at present. A sleeper on a train track is selected as a center special sleeper, a front detection interval and a rear detection interval are arranged between the center special sleeper and the adjacent sleepers in the track arrangement direction, and the device comprises a track edge detection device which comprises a train image scanning module and a wheel tread size measurement module, the train image scanning module comprises a center train bottom line scanning module, center two-side train bottom line scanning modules and two train side bogie line scanning modules. The wheel tread dimension measurement module comprises eight groups of dimension measurement modules; the rail side machine room equipment is arranged on one side of the width direction of the rail detection equipment; and a repeating device; the repeating device is installed at a far end and is composed of a computer terminal.

Description

Technical Field

[0001] The invention relates to the technical field of vehicle safety detection, and in particular to a device for fusion detection of train image scanning and wheelset size measurement. Background Art

[0002] The train fault detection device (TFDS) and the train wheel tread size detection device (TWDS) are important components of the truck vehicle safety detection and monitoring system (commonly known as the 5T system). In terms of application scenarios, both need to be installed in the main line depot section to detect passing vehicles; in terms of technical routes, both are visual inspection equipment, and TFDS mainly uses linear array camera scanning to detect vehicle body faults, and TWDS mainly uses linear structured light to detect wheel tread size, both of which require the use of cameras, lasers, and image acquisition and processing. Therefore, considering further reducing the overall equipment size and reducing the overall equipment cost, it is of great practical application significance to research and develop a set of TFDS+TWDS fusion detection equipment. Summary of the invention

[0003] In view of the above problems, the present invention provides a device for integrated detection of train image scanning and wheelset dimension measurement, which makes the overall structure of the device compact and does not significantly increase the volume, and solves the problems of space occupation, cost and complex management caused by the separate installation of the two types of equipment.

[0004] A device for fusion detection of train image scanning and wheelset size measurement, characterized in that a sleeper on a train track is selected as a central dedicated sleeper, and a front detection interval and a rear detection interval are arranged between the central dedicated sleeper and the sleepers adjacent to the sleepers in the track arrangement direction, and the device comprises:

[0005] A trackside detection device, comprising a train image scanning module and a wheel tread dimension measurement module, wherein the train image scanning module comprises a central vehicle bottom line scanning module, a central vehicle bottom line scanning module on both sides, and a vehicle side bogie line scanning module, wherein the central vehicle bottom line scanning module is located in the upper surface area between the two tracks of the central special sleeper, two groups of central vehicle bottom line scanning modules on both sides are respectively located in the upper surface area outside the track of the central special sleeper, the vehicle side bogie line scanning modules on both sides are respectively located on both sides of the track surface area, and the vehicle side bogie line scanning modules on both sides are arranged in the direction of the extension lines on both sides of the central special sleeper; the wheel tread dimension measurement module comprises eight groups of dimension measurement modules, and four groups of dimension measurement modules are respectively arranged in the front detection interval and the rear detection interval area along the width direction;

[0006] Trackside machine room equipment, which is arranged on one side of the track detection equipment in the width direction, and is used for image signal acquisition and processing calculation, as well as power supply and protection;

[0007] And a repeating device; which is installed at a remote end, the repeating device is composed of a computer terminal, the repeating device runs the repeating platform business software, displays the system detection results and issues an alarm.

[0008] It is further characterized by:

[0009] The equipment in the trackside machine room includes image acquisition server, processing server, industrial computer, system control host, signal and power lightning protection, UPS, KVM;

[0010] The trackside detection equipment also includes a remote start-up magnetic steel group, a vehicle number recognition device, and a near-end speed measurement magnetic steel group. The remote start-up magnetic steel group is arranged in the direction of the vehicle and is used to detect the vehicle signal and control the detection system to prepare for the vehicle reception; the vehicle number recognition device is used to read the vehicle number label information; the near-end speed measurement magnetic steel group is used to measure the vehicle speed and perform the photo triggering control of the line structured light camera;

[0011] Support frames are respectively arranged on both sides of the track in the length direction formed by the combination of the center special sleeper, the front detection interval and the rear detection interval. The bottom of each group of support frames is supported on the concrete foundation at the bottom. The length of each group of support frames covers the length area formed by the combination of the center special sleeper, the front detection interval and the rear detection interval. Two groups of cross arms are respectively placed in the areas of the front detection interval and the rear detection interval and arranged horizontally. Both ends of each group of cross arms in the length direction are respectively supported on the upper surface of the corresponding side support frame. Each group of vehicle-side bogie line scanning modules are respectively fixed on the upper surface of the corresponding support frame. The track is arranged above the cross arms. Four groups of size measurement modules are sequentially arranged on each group of cross arms, which makes assembly quick and convenient.

[0012] The central car bottom line scanning module and the car bottom line scanning modules on both sides of the center adopt a return-type flattened line scanning camera module based on the central special sleeper. The line scanning camera module is a combination of a line array camera and a line laser. The laser projection and imaging optical path adopts a plane mirror to change the original optical path, so that the original long optical path is realized by mirror return in the box, further reducing the internal space volume of the box and reducing the height of the box, so that the line scanning camera module is installed on the upper surface of the central special sleeper without exceeding the rail surface height;

[0013] The line scan camera module uses a linear array camera with a resolution of 2K or 4K and a near-infrared laser.

[0014] Each set of size measurement modules corresponds to a linear structured light vision sensor box, and each set of crossarms is provided with two sets of linear structured light vision sensor boxes in the area between the two rails. Each set of crossbeams is provided with a set of linear structured light vision sensor boxes on the outer side corresponding to the rails, and the visual capture ends of the adjacent linear structured light vision sensor boxes corresponding to the corresponding vertical surfaces of the wheels are respectively arranged toward the corresponding vertical surfaces of the wheels and rails, so as to reliably complete the wheel tread size measurement;

[0015] The linear structured light module of the linear structured light vision sensor box adopts an area array camera, and the laser is a near-infrared laser;

[0016] The wheel tread dimension measurement achieves high precision and high dynamics, with the tread circumferential wear, rim thickness, and rim height accuracy of 0.2mm; the wheel diameter and inner distance accuracy of 1mm; the applicable vehicle speed range is 0-200km / h.

[0017] After adopting the structure of the present invention, the train body image scanning and wheel tread size measuring equipment are integrated together, and the use of a "1+2 mountain-shaped" system layout and a flattened line scan camera module makes the structure of the integrated system compact and the volume does not increase significantly; at the same time, the integrated system shares supporting functional modules such as vehicle reception, speed measurement, control signals, lightning protection, and repeater platform software, thereby reducing the overall equipment cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the top view structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the side view structure of the present invention;

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure of the present invention;

[0021] The names corresponding to the serial numbers in the figure are as follows:

[0022] Train track 100, track 101;

[0023] Remote start magnetic steel group 1, vehicle number recognition equipment 2, near-end speed measurement magnetic steel group 3, trackside machine room equipment 4, repeater equipment 5, center special sleeper 6, cross arm 7, front detection interval 8, rear detection interval 9, support frame 11, concrete foundation 12, induction collection terminal 13;

[0024] Wheel tread size measuring module 10, first wheel tread size measuring block 1-1, second wheel tread size measuring block 1-2, third wheel tread size measuring block 1-3, fourth wheel tread size measuring block 1-4, fifth wheel tread size measuring block 1-5, sixth wheel tread size measuring block 1-6, seventh wheel tread size measuring block 1-7, eighth wheel tread size measuring block 1-8

[0025] Train image scanning module 20, vehicle left side bogie line scanning module 2-1, center left vehicle bottom line scanning module 2-2, center vehicle bottom line scanning module 2-3, center right vehicle bottom line scanning module 2-4, vehicle right side bogie line scanning module 2-5. DETAILED DESCRIPTION

[0026] A device for integrating train image scanning and wheelset dimension measurement, see Figure 1-Figure 3 , a sleeper on the train track 100 is selected as the central dedicated sleeper 6, and a front detection interval 8 and a rear detection interval 9 are arranged between the central dedicated sleeper 10 and the sleepers adjacent to the track arrangement direction. The front detection interval 8 and the rear detection interval 9 are designed and formed according to the width of the cross arm. The device includes:

[0027] The trackside detection equipment includes a train image scanning module 20 and a wheel tread size measuring module 10. The train image scanning module 20 includes a center vehicle bottom line scanning module 2-3, a center left vehicle bottom line scanning module 2-2, a center right vehicle bottom line scanning module 2-4, a vehicle left bogie line scanning module 2-1, and a vehicle right bogie line scanning module 2-5. The center vehicle bottom line scanning module 2-3 is located in the upper surface area between the two rails 101 of the center special sleeper 6, the center left vehicle bottom line scanning module 2-2 and the center right vehicle bottom line scanning module 2-4 are respectively located in the corresponding side upper surface areas outside the rail 101 of the center special sleeper 6, the vehicle left bogie line scanning module 2-1 and the vehicle right bogie line scanning module 2-5 are respectively located on both sides of the train track 100 surface area, and the vehicle left bogie line scanning module 2-1 and the vehicle right bogie line scanning module 2-5 are arranged in the extension line direction of both sides of the center special sleeper 6; The surface dimension measurement module 10 includes eight groups of dimension measurement modules, and the eight groups of dimension measurement modules include a first wheel tread dimension measurement block 1-1, a second wheel tread dimension measurement block 1-2, a third wheel tread dimension measurement block 1-3, a fourth wheel tread dimension measurement block 1-4, a fifth wheel tread dimension measurement block 1-5, a sixth wheel tread dimension measurement block 1-6, a seventh wheel tread dimension measurement block 1-7, and an eighth wheel tread dimension measurement block 1-8. The first wheel tread dimension measurement block 1-1, the second wheel tread dimension measurement block 1-2, the third wheel tread dimension measurement block 1-3, and the fourth wheel tread dimension measurement block 1-4 are arranged in the front detection interval along the width direction, and the fifth wheel tread dimension measurement block 1-5, the sixth wheel tread dimension measurement block 1-6, the seventh wheel tread dimension measurement block 1-7, and the eighth wheel tread dimension measurement block 1-8 are arranged in the rear detection interval along the width direction;

[0028] Trackside machine room equipment 4, which is arranged on one side of the width direction of the track detection equipment, is used for image signal acquisition and processing calculation, as well as power supply and protection. The trackside machine room equipment 4 includes an image acquisition server, a processing server, an industrial computer, a system control host, a signal and power supply lightning protection, a UPS, and a KVM;

[0029] And a repeating device 5; which is installed at a remote end, the repeating device 5 is composed of a computer terminal, the repeating device 5 runs the repeating platform business software, displays the system detection results and issues an alarm.

[0030] During specific implementation, the train image scanning module 20 and the induction aggregation end 13 of the wheel tread dimension measuring module 10 are connected to the trackside machine room equipment, and the trackside machine room equipment is externally connected to a repeater device.

[0031] In a specific embodiment, the trackside detection device further includes a remote start magnetic steel group 1, a vehicle number recognition device 2, and a near-end speed measurement magnetic steel group 3. The remote start magnetic steel group 1 is arranged in the direction of the vehicle and is used to detect the vehicle signal and control the detection system to prepare for the vehicle reception; the vehicle number recognition device 2 is used to read the vehicle number label information; the near-end speed measurement magnetic steel group 3 is used to measure the vehicle speed and perform the photo triggering control of the line structured light camera;

[0032] Support frames 11 are respectively arranged on both sides of the track 101 in the length direction formed by the combination of the center special sleeper 6, the front detection interval 8, and the rear detection interval 9. The bottom of each group of support frames 11 is supported on the bottom concrete foundation 12. The length of each group of support frames 11 covers the length area formed by the combination of the center special sleeper 6, the front detection interval 8, and the rear detection interval 9. The two groups of cross arms 7 are respectively placed in the areas of the front detection interval 8 and the rear detection interval 9 and arranged horizontally. The two ends of each group of cross arms 7 in the length direction are respectively supported on the upper surface of the corresponding side support frame 11, and each group of left-side bogie line scanning modules 2-1 and right-side bogie line scanning modules 2-5 are respectively fixed on the upper surface of the corresponding support frame 11. The track 101 is arranged above the cross arms 7. Four groups of size measurement modules are sequentially arranged on each group of cross arms 7, which makes assembly quick and convenient.

[0033] During specific implementation, the center vehicle bottom line scanning module 2-3, the center left vehicle bottom line scanning module 2-2, and the center right vehicle bottom line scanning module 2-4 adopt a folding flattened line scanning camera module based on the center dedicated sleeper 6. The line scanning camera module is a combination of a line array camera + a line laser. The laser projection and imaging optical path adopts a plane mirror to change the original optical path, so that the original long optical path is realized by mirror folding in the box, further reducing the internal space volume of the box and reducing the height of the box, so that the line scanning camera module is installed on the upper surface of the center dedicated sleeper 6, and will not exceed the rail surface height;

[0034] The line scan camera module uses a linear array camera with a resolution of 2K or 4K and a near-infrared laser.

[0035] In specific implementation, each set of size measurement modules corresponds to a linear structured light vision sensor box, each set of crossarms 7 corresponds to two sets of linear structured light vision sensor boxes in the area between the two rails, and each set of crossbeams 13 is respectively provided with a set of linear structured light vision sensor boxes on the outer side corresponding to the rails 101, and the visual capture ends of the adjacent linear structured light vision sensor boxes corresponding to the corresponding vertical surfaces of the wheels are respectively arranged toward the corresponding vertical surfaces of the wheels and the rails 101, so as to reliably complete the wheel tread size measurement;

[0036] The linear structured light module of the linear structured light vision sensor box adopts an area array camera, and the laser is a near-infrared laser;

[0037] The wheel tread dimension measurement achieves high precision and high dynamics, with the tread circumferential wear, rim thickness, and rim height accuracy of 0.2mm; the wheel diameter and inner distance accuracy of 1mm; the applicable vehicle speed range is 0-200km / h.

[0038] Here’s how it works:

[0039] When the train approaches, the remote start magnet group detects the wheel signal and determines the direction of the oncoming train. The signal is transmitted to the control host and industrial computer in the trackside machine room equipment. The control system prepares to receive the train, including opening the protective door of the trackside detection equipment, turning on the camera, projecting laser and other operations. When the train enters the trackside detection equipment area, the speed measuring magnet measures the train speed. On the one hand, it controls the line scan camera module to scan and take pictures at a specific frequency. On the other hand, it calculates the time it takes for each wheel to reach the center position of the equipment, and controls the line structured light camera to capture the wheel.

[0040] The images taken by the trackside detection equipment are transmitted to the server in the computer room for processing and calculation. The line scan camera images are synthesized and segmented according to the wheelbase. The laser light strip images of the line structured light are calculated. The wheel tread profile is calculated according to the line structured light stereoscopic vision detection principle, and the tread dimension information such as the wheel flange height, wheel flange thickness, and wheel rim thickness is output. The detection result image and dimension information are transmitted to the repeater platform software for display and alarm.

[0041] After adopting the structure of the present invention, the train body image scanning and wheel tread size measuring equipment are integrated together, and the use of a "1+2 mountain-shaped" system layout and a flattened line scan camera module makes the structure of the integrated system compact and the volume does not increase significantly; at the same time, the integrated system shares supporting functional modules such as vehicle reception, speed measurement, control signals, lightning protection, and repeater platform software, thereby reducing the overall equipment cost.

[0042] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0043] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A device for train image scanning and wheelset size measurement fusion detection, characterized in that: A sleeper on the train track is selected as a central dedicated sleeper, and a front detection interval and a rear detection interval are arranged between the central dedicated sleeper and the sleepers adjacent to each other in the track arrangement direction. The device comprises: A trackside detection device, comprising a train image scanning module and a wheel tread dimension measurement module, wherein the train image scanning module comprises a central vehicle bottom line scanning module, a central vehicle bottom line scanning module on both sides, and a vehicle side bogie line scanning module, wherein the central vehicle bottom line scanning module is located in the upper surface area between the two tracks of the central special sleeper, two groups of central vehicle bottom line scanning modules on both sides are respectively located in the upper surface area outside the track of the central special sleeper, the vehicle side bogie line scanning modules on both sides are respectively located on both sides of the track surface area, and the vehicle side bogie line scanning modules on both sides are arranged in the direction of the extension lines on both sides of the central special sleeper; the wheel tread dimension measurement module comprises eight groups of dimension measurement modules, and four groups of dimension measurement modules are respectively arranged in the front detection interval and the rear detection interval area along the width direction; Trackside machine room equipment, which is arranged on one side of the track detection equipment in the width direction, and is used for image signal acquisition and processing calculation, as well as power supply and protection; And a repeating device; which is installed at a remote end, the repeating device is composed of a computer terminal, the repeating device runs the repeating platform business software, displays the system detection results and issues an alarm.

2. The device for train image scanning and wheelset size measurement fusion detection according to claim 1, characterized in that: The trackside machine room equipment includes image acquisition server, processing server, industrial computer, system control host, signal and power lightning protection, UPS, and KVM.

3. The device for train image scanning and wheelset size measurement fusion detection according to claim 1, characterized in that: The trackside detection equipment also includes a remote start magnetic steel group, a vehicle number recognition device, and a near-end speed measurement magnetic steel group. The remote start magnetic steel group is arranged in the direction of the oncoming vehicle and is used to detect the oncoming vehicle signal and control the detection system to prepare for receiving the vehicle; the vehicle number recognition device is used to read the vehicle number label information; the near-end speed measurement magnetic steel group is used to measure the vehicle speed and perform photo triggering control of the line structured light camera.

4. The device for train image scanning and wheelset size measurement fusion detection according to claim 1, characterized in that: Support frames are respectively arranged on both sides of the track in the length direction formed by the combination of the center special sleeper, the front detection interval and the rear detection interval. The bottom of each group of support frames is supported on the concrete foundation at the bottom. The length of each group of support frames covers the length area formed by the combination of the center special sleeper, the front detection interval and the rear detection interval. Two groups of cross arms are respectively placed in the areas of the front detection interval and the rear detection interval and arranged horizontally. Both ends of the length direction of each group of cross arms are respectively supported on the upper surface of the corresponding side support frames. Each group of vehicle-side bogie line scanning modules are respectively fixedly installed on the upper surface of the corresponding support frames. The track is arranged above the cross arms. Four groups of size measurement modules are sequentially arranged on each group of cross arms.

5. The device for train image scanning and wheelset size measurement fusion detection according to claim 1, characterized in that: The center vehicle bottom line scanning module and the center side vehicle bottom line scanning modules adopt a return-type flattened line scanning camera module based on the center special sleeper. The line scanning camera module is a combination of a line array camera and a line laser. The laser projection and imaging optical path adopts a plane mirror to change the original optical path, so that the original long optical path is realized by mirror return in the box, further reducing the internal space volume of the box and lowering the height of the box, so that the line scanning camera module can be installed on the upper surface of the center special sleeper without exceeding the rail surface height.

6. The device for train image scanning and wheelset dimension measurement fusion detection according to claim 5, characterized in that: The line scan camera module uses a linear array camera with a resolution of 2K or 4K and a near-infrared laser.

7. The device for train image scanning and wheelset size measurement fusion detection according to claim 1, characterized in that: Each set of dimension measurement modules corresponds to a linear structured light vision sensor box, each set of cross arms corresponds to two sets of linear structured light vision sensor boxes in the area between the two rails, each set of cross beams corresponds to a set of linear structured light vision sensor boxes on the outer side of the rails, and the visual capture ends of the adjacent linear structured light vision sensor boxes corresponding to the corresponding facades of the wheels are respectively set toward the corresponding facades of the wheels and rails.

8. The device for fusion detection of train image scanning and wheelset dimension measurement according to claim 7 is characterized in that: The line structured light module of the line structured light vision sensor box adopts an area array camera, and the laser is a near-infrared laser.

9. The device for fusion detection of train image scanning and wheelset dimension measurement according to claim 1, characterized in that: The wheel tread dimension measurement achieves high precision and high dynamics, with the tread circumferential wear, rim thickness, and rim height accuracy of 0.2mm; the wheel diameter and inner distance accuracy of 1mm; the applicable vehicle speed range is 0-200km / h.

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