CN208075878U - A kind of rail polling high precision odometer counting apparatus based on linear array scanning imaging - Google Patents
A kind of rail polling high precision odometer counting apparatus based on linear array scanning imaging Download PDFInfo
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- CN208075878U CN208075878U CN201820453550.2U CN201820453550U CN208075878U CN 208075878 U CN208075878 U CN 208075878U CN 201820453550 U CN201820453550 U CN 201820453550U CN 208075878 U CN208075878 U CN 208075878U
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Abstract
The utility model discloses a kind of rail polling high precision odometer counting apparatus being imaged based on linear array scanning, belongs to rail polling technical field.The device is made of photoelectric encoder, pulse counter, imaging controller, line array video camera, linear light source, computer, image pick-up card, supporting mechanism, power supply interface, linear array imaging is carried out to raceway surface, taking count of crosstie is carried out based on linear array imaging image, in conjunction with photoelectric encoder step-by-step counting and vehicle wheel rotation directional information, high precision odometer number is carried out.Utility model device can carry on detection train or other rail polling detection platforms, provide accurately location information for rail polling, facilitate the accurate positionin of rail polling result, and quickly searched in later maintenance.
Description
Technical field
The utility model is related to rail polling technical field, refer in particular in a kind of rail polling high-precision of linear array scanning imaging
Journey counting device.
Background technology
Rail traffic includes common railway, high-speed railway, subway etc., is sent out in the national economic development, people's lives trip
Wave significant role.To ensure that rail traffic operational safety, rail transportation operation department need periodically to carry out inspection to rail safety.
Specifically inspection content includes：Rail geometric parameter detects, the abnormality detections such as railway rail clip loosening, missing, crackle, rail wear inspection
It surveys, bow net wireline inspection, road surface foreign bodies detection etc..
Currently, rail geometric parameter detects, inertial navigation system, Laser image measurement systems are mainly used, for detecting automatically
Orbit geometry parameter；Fastener abnormality detection mainly uses manual inspection.In the recent period, some scholars are by image detection, inertial navigation etc.
Automatic measurement technique is introduced into rail polling.
In automatic tour inspection system, the abnormal results detected need to be usually associated with mileage, be determined when as correction maintenance
Position foundation.Currently, China's rail polling system is mostly counted frequently with photoelectric encoder, GPS positioning system for mileage.Due to
GPS is positioned under the environment such as tunnel, mountain area and can be severely impacted, and is counted for mileage currently, mostly using photoelectric encoder, then
Mileage counting is modified using setting RFID electronic label at the y Km of interval, the value of y is 1~10.But y Km with
It is interior, when carrying out mileage counting using photoelectric encoder, there is a problem in that：1) when photoelectric encoder is mounted on train or inspection
When surveying on the driving wheel of platform, when train or detection platform start or brake, driving wheel is easy to skid on rail, in generation
Journey counting error；2) when photoelectric encoder is installed on the supporting roller of train or detection platform, (supporting roller itself does not have driving energy
Power, following train or detection platform are rolling on rail) when, although when train or detection platform start or brake, supporting roller
It does not have apparent slipping phenomenon to occur, still, in train or detection platform motion process, there are one between supporting roller and rail
That is, there is slight slip phenomenon in fixed relative motion, to make mileage count, there are accumulated errors.When we are driven using supporting roller
When dynamic line array video camera carries out linear array scanning imaging to track road surface, at the initial stage of scanning, 2 linear array scanning imaging results bases
Originally it can overlap, as shown in Figure 1, still, with the increase of scanning distance, the accumulated error effect of photoelectric encoder becomes very
Obviously, as shown in Figure 2 (distance of position shown in Fig. 1 institutes position to Fig. 2 only has 20m).For abnormal inspections such as fastener, track damages
For survey, positioning accuracy<0.5m.When y=1, photoelectric encoder accumulated error are 1%, mileage deviations are up to 10m,
This obviously cannot meet practical application request.
It, can be real by being counted to rail sleeper or fastener since railroad sleeper installation site is fixed and is spaced it is known that therefore
Existing high precision odometer number.Railway rail clip is counted using machine vision for this purpose, patent CN2016112135719 propositions are a kind of,
The method for carrying out mileage counting.The fasteners positioning sides such as the same photoelectric encoder of this method, electro-optical distance measurement sensor and GPS positioning system
Method is compared, and has positioning accuracy height, without advantages such as accumulated errors.But using face battle array camera shooting in patent CN2016112135719
Machine needs accurately fastener triggering imaging control system, just can guarantee same in institute's fastener shooting image for obtaining fastener image
One fastener only occurs once.When no fastener triggers imaging control system, when the detection platform speed of service is clapped more than video camera
When taking the photograph speed, fastener can be omitted by shooting in image, lead to mileage miscount；When the detection platform speed of service is clapped less than video camera
When taking the photograph speed, the same fastener appears in multiple image, needs to reject extra fastener image in shooting image.For
This, active demand one kind is reliable, effective high precision odometer counting apparatus, to adapt to mileage essence under tunnel, subway application scenarios
Standard counts application demand.
Utility model content
The purpose of this utility model is to provide a kind of reliable, high-precision mileage counting device for rail polling.
The technical solution of the utility model is：
A kind of rail polling high precision odometer counting apparatus based on linear array scanning imaging, it is characterised in that：The device by
Photoelectric encoder, pulse counter, imaging controller, line array video camera, linear light source, computer, image pick-up card, support machine
Structure, power supply interface composition.
The photoelectric encoder is fixed in the rotation shaft of wheel of train or track detecting platform, is carried out to vehicle wheel rotation angle
Coding.
The pulse counter is fixed on supporting mechanism, is connect with photoelectric encoder, to the vehicle of photoelectric encoder output
Wheel rotation angle signal is identified, and judgement vehicle wheel rotation direction counts photoelectric coding pulse.
The pulse counter is connect with computer, and vehicle wheel rotation directional information and step-by-step counting result are transferred to calculating
Machine.
The imaging controller is fixed on supporting mechanism, is connect with photoelectric encoder, to the light of photoelectric encoder output
Electric impulse signal is modulated, and is generated line array video camera Trig control signal, is connect with line array video camera, and line array video camera is controlled
Line scanning imagery.
The line array video camera is fixed on supporting mechanism, is connect with imaging controller, is received imaging control signal and is carried out
Linear array scanning is imaged, and line array video camera is connect with computer epigraph capture card, and image is transferred to computer, computer
Middle upper computer software carries out Image Acquisition, storage and processing.
The linear light source is fixed on supporting mechanism, and linear light source direction of illumination provides photograph towards road surface, for line array video camera
It is bright.
The computer is fixed on train or rail polling platform, is connect with pulse counter, image pick-up card, is calculated
Upper computer software is run on machine, completes the acquisition of pulse counter data, linear array images acquisition, linear array images processing, taking count of crosstie,
And according to vehicle wheel rotation direction, step-by-step counting result, taking count of crosstie as a result, carrying out mileage calculation.
The power supply interface and photoelectric encoder, pulse counter, imaging controller, line array video camera, linear light source, calculating
Machine connects, and powers for these equipment, and required electric energy is provided by train or rail polling platform.
The supporting mechanism is for fixing photoelectric encoder, pulse counter, imaging controller, line array video camera, linear light
Source, and be connected and fixed with the bottom of train or rail polling platform.
The irradiated plane of the linear light source is parallel with the imaging plane of line array video camera, and the imaging of line array video camera is flat
Face is located in linear light source irradiation area, and the irradiated plane of linear light source, the imaging plane of line array video camera are vertical with track.
The imaging region of the line array video camera is among track or in side the region not comprising track and fastener.
The linear light source is the narrow-band light source that wavelength is a, and the narrow-band-filter for being a in line array video camera front end setting wavelength
Piece, to eliminate ambient light interference, the value range of a is 300nm~1000nm.
The fixed wheel of photoelectric encoder is supporting roller, and supporting roller itself does not have power drive, is fitted on rail
It rolls.
The data-interface of the line array video camera is Gige, and external trigger is TTL signal.
Described image capture card data-interface is Gige.
The pulse counter passes through RS232 interface and computer communication.
The beneficial effects of the utility model are：
The utility model obtains linear array images using linear array scanning mode, and taking count of crosstie, then root are carried out based on linear array images
It is according to the advantages of vehicle wheel rotation directional information, sleeper spacing, progress mileage counting of step-by-step counting result：
1) mileages method of counting, the utility model such as GPS are compared not interfered by tunnel, can be used for tunnel, subway middle orbit
Inspection mileage counts and positioning；
2) because sleeper is spaced about 0.5m, therefore, the utility model is based on the obtained mileage of taking count of crosstie result and counts
The minimum 0.5m of resolution ratio recycles vehicle wheel rotation direction and step-by-step counting as a result, when photoelectric encoder divides wheel circumference
, it can be achieved that mm grades of mileages count when resolution reaches 1mm；
3) comparing patent CN2016112135719 uses area array camera, the utility model that need not accurately trigger control
System processed will not omit sleeper, not will produce redundant image, and image data amount is few, mileage counting can be rapidly completed；
4) the utility model can carry detection train or other inspection detection platforms on, provided accurately for rail polling
Location information facilitates rail polling result to be accurately positioned, and is quickly searched in later maintenance.
Description of the drawings
Fig. 1 is 2 linear array scan image beginning regional average values of same track；
Fig. 2 is 2 linear array scan image terminal region mean values of same track；
Fig. 3 is the structural schematic diagram of utility model device.
1, sleeper, 2, rail, 3, wheel, 4, photoelectric encoder, 5, linear light source, 6, pulse counter, 7, imaging controller,
8, line array video camera, 9, supporting mechanism, 10, image pick-up card, 11, computer
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
It clearly and completely describes, it is clear that described embodiment is only the utility model a part of the embodiment, rather than whole realities
Apply example.Based on the embodiments of the present invention, those of ordinary skill in the art institute without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
As shown in figure 3, the present embodiment provides a kind of rail polling high precision odometer counting apparatus of linear array scanning imaging, tool
Body embodiment is as follows：
A kind of rail polling high precision odometer counting apparatus based on linear array scanning imaging, by photoelectric encoder 4, pulsimeter
Number device 6, imaging controller 7, line array video camera 8, linear light source 5, computer 11, image pick-up card 10, supporting mechanism 9, power supply connect
Mouth composition.
Photoelectric encoder 4 is fixed in 3 shaft of wheel of train or track detecting platform, is carried out to 3 rotational angle of wheel
Coding.
Pulse counter 6 is fixed on supporting mechanism 9, is connect with photoelectric encoder 4, the vehicle exported to photoelectric encoder 4
It takes turns 3 rotational angle signals to be identified, judges 3 rotation direction of wheel, capable counting is rushed in photoelectric coding arteries and veins 4.
Pulse counter 6 is connect with computer 11, and 3 rotation direction information of wheel and step-by-step counting result are transferred to calculating
Machine 11.
Imaging controller 7 is fixed on supporting mechanism 9, is connect with photoelectric encoder 4, the light exported to photoelectric encoder 4
Electric impulse signal is modulated, and is generated 8 Trig control signal of line array video camera, is connect with line array video camera 8, control linear array camera shooting
8 line scanning imagery of machine.
Line array video camera 8 is fixed on supporting mechanism 9, is connect with imaging controller 7, receives imaging control signal into line
Battle array scanning imagery, line array video camera 8 are connect with 11 epigraph capture card 10 of computer, and image is transferred to the upper of industrial personal computer
Position machine software is stored and processed.
Linear light source 5 is fixed on supporting mechanism 9, and 5 direction of illumination of linear light source provides photograph towards road surface, for line array video camera 8
It is bright.
Computer 11 is fixed on train or rail polling platform, is connect with pulse counter 6, image pick-up card 10, meter
Upper computer software is run on calculation machine 11, completes the acquisition of 6 data of pulse counter, linear array images acquisition, linear array images processing, sleeper
1 counts, and according to 3 rotation direction of wheel, step-by-step counting result, taking count of crosstie as a result, carrying out mileage calculation.
Power supply interface and photoelectric encoder 4, pulse counter 6, imaging controller 7, line array video camera 8, linear light source 5, meter
Calculation machine 11 connects, and powers for these equipment, and required electric energy is provided by train or rail polling platform.
Supporting mechanism 9 is for fixing photoelectric encoder 4, pulse counter 6, imaging controller 7, line array video camera 8, linear light
Source 5, and it is fixed on the bottom of train or rail polling platform, with to orbital region sleeper scanning imagery.
The irradiated plane of linear light source 5 is parallel with the imaging plane of line array video camera 8, and the imaging of line array video camera 8 is flat
Face is located in 5 irradiation area of linear light source, and the irradiated plane of linear light source 5, the imaging plane of line array video camera 8 are vertical with track.
The imaging region of line array video camera 8 is among track or in side the region not comprising track and fastener.
Linear light source 5 is the narrow-band light source that wavelength is a, and the narrow-band-filter for being a in 8 front end of line array video camera setting wavelength
Piece, to eliminate ambient light interference, a=800nm.
4 fixed wheel 3 of photoelectric encoder is supporting roller, and supporting roller itself is fitted on rail and rolls without driving.
The data-interface of line array video camera 8 is Gige, and external trigger is TTL signal.
10 data-interface of image pick-up card is Gige.
Pulse counter 6 passes through RS232 interface and computer communication.
Above disclosed is only a kind of the utility model preferred embodiment, cannot limit this practicality with this certainly
Novel interest field, therefore equivalent variations made according to the claim of the utility model still belong to what the utility model was covered
Range.
Claims (8)
1. a kind of rail polling high precision odometer counting apparatus based on linear array scanning imaging, it is characterised in that：The device is by light
Photoelectric coder, pulse counter, imaging controller, line array video camera, linear light source, computer, image pick-up card, supporting mechanism,
Power supply interface forms；
The photoelectric encoder is fixed on train or track patrols in the rotation shaft of wheel for surveying platform, is compiled to vehicle wheel rotation angle
Code；
The pulse counter is fixed on supporting mechanism, is connect with photoelectric encoder, is turned to the wheel of photoelectric encoder output
Dynamic angle signal is identified, and judgement vehicle wheel rotation direction counts photoelectric coding pulse；
The pulse counter is connect with computer, and vehicle wheel rotation directional information and step-by-step counting result are transferred to counting machine；
The imaging controller is fixed on supporting mechanism, is connect with photoelectric encoder, to the photoelectricity arteries and veins of photoelectric encoder output
It rushes signal to be modulated, generates line array video camera Trig control signal, connect with line array video camera, control line array video camera line is swept
Retouch imaging；
The line array video camera is fixed on supporting mechanism, is connect with imaging controller, is received imaging control signal and is carried out linear array
Scanning imagery, line array video camera are connect with computer epigraph capture card, by image transmitting to computer, host computer in computer
Software carries out Image Acquisition, storage and processing；
The linear light source is fixed on supporting mechanism, and linear light source direction of illumination provides illumination towards road surface, for line array video camera；
The computer is fixed on train or rail polling platform, is connect with pulse counter, image pick-up card, on computer
Upper computer software is run, the acquisition of pulse counter data, linear array images acquisition and storage, linear array images processing, sleeper meter are completed
Number, and according to vehicle wheel rotation direction, step-by-step counting result, taking count of crosstie as a result, carrying out mileage calculation；
Described image capture card is installed on computers, is connect with line array video camera, for acquiring line array video camera shooting figure picture；
The power supply interface connects with photoelectric encoder, pulse counter, imaging controller, line array video camera, linear light source, computer
It connects, powers for these equipment, required electric energy is provided by train or rail polling platform；
The supporting mechanism is used to fix photoelectric encoder, pulse counter, imaging controller, line array video camera, linear light source, and
It is connected and fixed with train or rail polling mesa base.
2. the rail polling high precision odometer counting apparatus according to claim 1 based on linear array scanning imaging, feature
It is：The irradiated plane of the linear light source is parallel with the imaging plane of line array video camera, and the imaging plane of line array video camera
In linear light source irradiation area, the irradiated plane of linear light source, the imaging plane of line array video camera are vertical with track.
3. the rail polling high precision odometer counting apparatus according to claim 1 based on linear array scanning imaging, feature
It is：The imaging region of the line array video camera is among track or in side the region not comprising track and fastener.
4. the rail polling high precision odometer counting apparatus according to claim 1 based on linear array scanning imaging, feature
It is：The linear light source is the narrow-band light source that wavelength is a, and the spike filter for being a in line array video camera front end setting wavelength,
The value range of a is 300nm~1000nm.
5. the rail polling high precision odometer counting apparatus according to claim 1 based on linear array scanning imaging, feature
It is：The fixed wheel of photoelectric encoder is supporting roller, and supporting roller itself does not have power drive, is fitted on rail and rolls
It is dynamic.
6. the rail polling high precision odometer counting apparatus according to claim 1 based on linear array scanning imaging, feature
It is：The data-interface of the line array video camera is Gige, and external trigger is TTL signal.
7. the rail polling high precision odometer counting apparatus according to claim 1 based on linear array scanning imaging, feature
It is：Described image capture card data-interface is Gige.
8. the rail polling high precision odometer counting apparatus according to claim 1 based on linear array scanning imaging, feature
It is：The pulse counter passes through RS232 interface and computer communication.
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| CN201820453550.2U CN208075878U (en) | 2018-04-02 | 2018-04-02 | A kind of rail polling high precision odometer counting apparatus based on linear array scanning imaging |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109677444A (en) * | 2019-01-10 | 2019-04-26 | 北京交通大学 | A kind of acquisition device of the comprehensive perception of track apparent condition |
| CN109976354A (en) * | 2019-04-23 | 2019-07-05 | 成都精工华耀科技有限公司 | A kind of removable automatic running rail polling trolley |
| CN112945262A (en) * | 2021-01-27 | 2021-06-11 | 中国铁建电气化局集团有限公司 | Portable intelligent measurement trolley with engineering data detection function |
| CN113037946A (en) * | 2021-03-03 | 2021-06-25 | 京东数科海益信息科技有限公司 | Synchronous module of robot camera is patrolled and examined to track |
| CN114228778A (en) * | 2021-12-09 | 2022-03-25 | 上海市东方海事工程技术有限公司 | Inspection vehicle-based track three-vertical-face detection system and method |
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2018
- 2018-04-02 CN CN201820453550.2U patent/CN208075878U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109677444A (en) * | 2019-01-10 | 2019-04-26 | 北京交通大学 | A kind of acquisition device of the comprehensive perception of track apparent condition |
| CN109976354A (en) * | 2019-04-23 | 2019-07-05 | 成都精工华耀科技有限公司 | A kind of removable automatic running rail polling trolley |
| CN112945262A (en) * | 2021-01-27 | 2021-06-11 | 中国铁建电气化局集团有限公司 | Portable intelligent measurement trolley with engineering data detection function |
| CN112945262B (en) * | 2021-01-27 | 2023-10-24 | 中国铁建电气化局集团有限公司 | Portable intelligent measurement dolly that possesses engineering data detection function |
| CN113037946A (en) * | 2021-03-03 | 2021-06-25 | 京东数科海益信息科技有限公司 | Synchronous module of robot camera is patrolled and examined to track |
| CN114228778A (en) * | 2021-12-09 | 2022-03-25 | 上海市东方海事工程技术有限公司 | Inspection vehicle-based track three-vertical-face detection system and method |
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