CN205642314U - Contact wire detection device based on embedded binocular vision technique - Google Patents
Contact wire detection device based on embedded binocular vision technique Download PDFInfo
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- CN205642314U CN205642314U CN201620430328.1U CN201620430328U CN205642314U CN 205642314 U CN205642314 U CN 205642314U CN 201620430328 U CN201620430328 U CN 201620430328U CN 205642314 U CN205642314 U CN 205642314U
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- binocular vision
- contact line
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Abstract
The utility model discloses a contact wire detection device based on embedded binocular vision technique, include: a two linear array cameras, ARM microprocessor for gathering contact wire image information for acquire the GPS receiving antenna in train geographical position, be used for showing the LCD display in contact wire geometric parameters and train geographical position, SD storage card, memory and PC. Compared with the prior art, the utility model relates to a non -contact detection technique based on the binocular vision technique is chooseed for use to the novelty, utilizes the embedded high speed processor of ARM technique, realizes low -speed dynamic measurement. Have advantages such as response speed is fast, the measuring speed is high, simple structure, low price.
Description
Technical field
This utility model relates to a kind of detecting system, a kind of contact line detector based on embedded binocular vision technology.
Background technology
Railway is the basis of Chinese national economy development, has irreplaceable special status and important function.Electric railway has the advantages such as efficient, heavily loaded and environmental pollution is little, is the railway important channel to high speed modernization development, is also the first-selection built of new line.Contact wire is as the important component part of electric railway, and its position is too high or too low, all can affect pantograph in electric railway, electric locomotive obtains electric energy by pantograph from contact net, it is achieved electric propulsion.Contact wire plays a part to power for electric locomotive, and its geometric parameter directly affects the current carrying quality of locomotive.Therefore, the detection of contact wire geometric parameter is particularly paid attention to by electric railway.
Current carrying quality and equipment attrition, there will be " scraping bow " accident and cause heavy losses time serious.Therefore, height of contact wire measurement is significant.At present in being periodically detected of bump contact line height, bow net maintainer uses phase laser distance measurement machine in the majority, and this equipment uses mechanical scan, low to locating tab assembly efficiency, and each point of measuring needs time a few minutes, wastes time and energy.For this situation, studying efficient, real-time power contacts wire altitude meter just becomes a urgent problems.
Utility model content
Purpose: in order to overcome the deficiencies in the prior art, this utility model provides a kind of contact line detector based on embedded binocular vision technology, ARM embedded system is applied in low speed dynamic Contact conductor height measurement scheme, in combination with image processing techniques based on binocular stereo vision, and complete efficient convenient embedded binocular vision technology the contact design of line detector, development on this basis.During work, this instrument is positioned over train top.Native system combines optics, precision optical machinery, opto-electronic conversion, electronic technology and microprocessor etc., it is achieved that the digitized of instrument, image conversion, real time implementation, intellectuality and automatization.
Technical scheme: for solving above-mentioned technical problem, the technical solution adopted in the utility model is:
A kind of contact line detector based on embedded binocular vision technology, it is characterized in that, including: for gathering two line-scan digital cameras of contact line image information, ARM microprocessor, for obtaining the GPS receiver antenna in train geographical position, for showing contact line geometry parameter and the LCD display in train geographical position, SD storage card, internal memory and PC.
Preferably, described line-scan digital camera is the FC-IU320C-6 type industrial camera of Shanghai Fang Cheng Micron Technology Co., Ltd.
Preferably, the photographic head of described line-scan digital camera is that Fuji can HF25HA-1B tight shot.
The photographic head of two line-scan digital cameras all connects arm processor by USB data line.
Preferably, described ARM9 processor is the S3C2410X type processor that Samsung produces.
Preferably, described GPS receiver antenna is ZYGPSDA-30 type.
Preferably, described LCD display model is LRH9J515XA STN/BW.Nand-flash internal memory is saved as in described.
Preferably, described contact line detector based on embedded binocular vision technology, it is characterised in that: also including the illuminator for adapting to night-environment, described illuminator is 808nm semiconductor laser.
Preferably, described SD card is that 16 SDRAM parallel connections of two panels constitute 32 SDRAM storage systems, 64GB memory space altogether, meets various programs in image acquisition and runs.
Beneficial effect: a kind of based on embedded binocular vision technology the contact line detector that this utility model provides, have the advantage that this detecting system completes to abandon existing contact measurement means, have employed up-to-date machine vision binocular measurement technology and the train of high-speed cruising is carried out real state revision.Native system have employed high speed linear array video camera, constitutes binocular measuring system, the most ripe Convergent measurement technology is applied to flexibly in contact net measurement of wear.New detection technique is proposed, it is achieved that non-contact measurement new opplication in contact net measuring technology for Inspection Technology for Overhead Contact System.Native system uses the SD storage card as storage tool and internal memory, coordinates ARM microprocessor to carry out the process of disparity map, it is ensured that the stable operation of ARM microprocessor, improves the shock resistance of equipment simultaneously, be also greatly increased service life.Native system fast response time, can realize height of contact wire and detect in real time, strong adaptability.Native system volume is little, low in energy consumption, low cost, can be widely popularized.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Below in conjunction with specific embodiment, this utility model is further described.
As shown in Figure 1, a kind of contact line detector based on embedded binocular vision technology, including for gather contact line image linear array binocular camera shooting head unit, for illumination compensating lamp, arm processor, SD storage card, internal memory, for show abrasion of contact wire situation LCD display and for obtaining the GPS receiver antenna in geographical position.
Native system uses 2 line-scan digital cameras, and the resolution of camera is 4K, and maximum sweep rate is 18.5K, acquisition 18500 two field picture the most per second.Two cameras tilt to be installed on the platform both sides in compartment respectively, are arranged symmetrically with relative to the centrage in compartment, and camera primary optical axis plane is 60 degree with the angle of vehicle roof platform plane.Two photographic head connect the USB interface of ARM microprocessor respectively by USB data line.
The SD memory card interface of arm processor connects SD storage card, and NAND-flash interface connects internal memory, and LCD interface connects LCD display, and Ethernet interface connects PC by netting twine.GPS decoding unit is connected with ARM microprocessor by serial ports.
Operation principle:
1) arranging two linear array CCD cameras in visual field, its resolution is 4K, is respectively defined as
CCDl and CCD2.Two imaging systems are distributed in the both sides of contact line moving range, and the position of two cameras forms a light curtain target.According to intersection measuring principle, in order to obtain the highest certainty of measurement, the optical axis of two linear array CCD cameras should be made to be orthogonal layout, i.e. when the elevation angle of two ccd video cameras Yu mounting platform is 45 °, the optical axis of two cameras is orthogonal.
2) image definition, details resolving power and picture contrast etc. are directly affected due to light source, so it is high to install light-source brightness between two line array video cameras, power is big, the laser compensation lamp that monochromaticity is good, in view of the spectral response sensitive area of imageing sensor at 450nm～900nm, use infrared light supply can eliminate the light disturbance caused daytime by sunlight so that the data consistent that night on daytime records.Native system selects 808nm semiconductor laser.
3) in order to two faces of the image of same point are shot image simultaneously, so two line-scan digital cameras need to run and synchronize, one point of two line array CCD correspondence collections can ensure with the physical location of two cameras in precision, two cameras all run on external trigger pattern, being concurrently accessed the external trigger end of two cameras with the output pulse of the velocity sensor of a photo-electric, the special photoelectric speed sensor of train exports 200 pulses in one week at wheel rolling.So ensure that two cameras same point to contact line, the same time gathers two width images, it is ensured that follow-up carry out image analysis calculation time error minimum.The program has an advantage that the bandwidth minimum required for i.e. two camera transmission images.
4) need to mate with positional information in real time to the detected value of contact line abrasion, with clear the position determining detection numerical value, contact net detected value positional information is identified by GPS obtain, while obtaining contact net image by network interface and calculating every geometric parameter of contact net in real time in data server, send, from GPS decoding unit, the geographic position data of coming while being obtained in real time by serial ports, and it is corresponding with the positional information of GPS with actual kilometer post by the pillar number in data base, detection interface is formed easily identify with pillar number or kilometer be designated as abscissa, real-time curve chart with actual Contact Line Detection data bit vertical coordinate.
5) utilize on ARM embedded platform technique of binocular stereoscopic vision to binocular camera shooting head unit Real-time Collection to image process and computed losses data, wherein, internal memory is used for obtaining the contact line image of electric car, SD storage card is used for storing the contact line image of acquisition, and LCD display is used for showing program operation result.
6) system real-time reception image, processes, and is broadly divided into Image semantic classification, contact line coarse positioning, edge treated, contact lines matching, triangulation calculation are obtained a result.Then the result analyzed is shown in real time, early warning.Contribute to finding in time to contact line fault, overhaul in time.
This utility model achieves the low speed of conductor height and dynamically detects, and overcomes contact measurement and limitation that detection car test is surveyed, and certainty of measurement height, efficiency height, fast response time, low in energy consumption, volume is little, low cost, can be widely popularized.
The above is only preferred implementation of the present utility model; it is noted that, for those skilled in the art; on the premise of without departing from this utility model principle, it is also possible to make some improvements and modifications, these improvements and modifications also should be regarded as protection domain of the present utility model.
Claims (10)
1. a contact line detector based on embedded binocular vision technology, it is characterized in that, including: for gathering two line-scan digital cameras of contact line image information, ARM microprocessor, for obtaining the GPS receiver antenna in train geographical position, for showing contact line geometry parameter and the LCD display in train geographical position, SD storage card, internal memory and PC.
Contact line detector based on embedded binocular vision technology the most according to claim 1, it is characterised in that: described line-scan digital camera is FC-IU320C-6 type industrial camera.
Contact line detector based on embedded binocular vision technology the most according to claim 1, it is characterised in that: the photographic head of described line-scan digital camera is HF25HA-1B tight shot.
Contact line detector based on embedded binocular vision technology the most according to claim 1, it is characterised in that: the photographic head of two line-scan digital cameras all connects arm processor by USB data line.
Contact line detector based on embedded binocular vision technology the most according to claim 1, it is characterised in that: described ARM microprocessor is S3C2410X type processor.
Contact line detector based on embedded binocular vision technology the most according to claim 1, it is characterised in that: described GPS receiver antenna is ZYGPSDA-30 type.
Contact line detector based on embedded binocular vision technology the most according to claim 1, it is characterised in that: described LCD display model is LRH9J515XA STN/BW.
Contact line detector based on embedded binocular vision technology the most according to claim 1, it is characterised in that: save as Nand-flash internal memory in described.
Contact line detector based on embedded binocular vision technology the most according to claim 1, it is characterised in that: also including the illuminator for adapting to night-environment, described illuminator is 808nm semiconductor laser.
Contact line detector based on embedded binocular vision technology the most according to claim 1, it is characterised in that: described SD storage card is that 16 SDRAM parallel connections of two panels constitute 32 SDRAM storage systems, 64GB memory space altogether.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620430328.1U CN205642314U (en) | 2016-05-13 | 2016-05-13 | Contact wire detection device based on embedded binocular vision technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620430328.1U CN205642314U (en) | 2016-05-13 | 2016-05-13 | Contact wire detection device based on embedded binocular vision technique |
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| Publication Number | Publication Date |
|---|---|
| CN205642314U true CN205642314U (en) | 2016-10-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620430328.1U Expired - Fee Related CN205642314U (en) | 2016-05-13 | 2016-05-13 | Contact wire detection device based on embedded binocular vision technique |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106546171A (en) * | 2016-10-18 | 2017-03-29 | 河海大学 | A kind of bullet train contact wire real-time detection apparatus based on machine vision |
| CN106767396A (en) * | 2016-11-15 | 2017-05-31 | 青岛大学 | A kind of portable multi-function contact line somascope |
-
2016
- 2016-05-13 CN CN201620430328.1U patent/CN205642314U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106546171A (en) * | 2016-10-18 | 2017-03-29 | 河海大学 | A kind of bullet train contact wire real-time detection apparatus based on machine vision |
| CN106767396A (en) * | 2016-11-15 | 2017-05-31 | 青岛大学 | A kind of portable multi-function contact line somascope |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161012 Termination date: 20190513 |
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| CF01 | Termination of patent right due to non-payment of annual fee |