CN1299941C - Method for monitoring operating state of switch machine for switches and crossings of wheel track - Google Patents
Method for monitoring operating state of switch machine for switches and crossings of wheel track Download PDFInfo
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- CN1299941C CN1299941C CNB2004100096424A CN200410009642A CN1299941C CN 1299941 C CN1299941 C CN 1299941C CN B2004100096424 A CNB2004100096424 A CN B2004100096424A CN 200410009642 A CN200410009642 A CN 200410009642A CN 1299941 C CN1299941 C CN 1299941C
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Abstract
The present invention relates to a method for accurately positioning turning machine actions of wheel track switches and gap actions of indication levers and a realizing system thereof. The present invention uses the rigid characteristic of indication rod of a switch turning machine and realizes the accurate positioning of gaps of the indication rods of the turning machine by the collection, the treatment and the characteristic comparison of the specific position marks of the indication rods by a digital camera. The system uses a USB digital camera for collecting image data, uses an embedded system for the remote treatment of the image data, and uses a power carrier wave technique for transmitting the data. The accuracy of the system can achieve 0.03mm; the system can carry out the simultaneous on-line monitoring of the gap position states of the indication rods of 40 groups of switches at most.
Description
Technical field
The present invention relates to a kind of wheel track point machine operating state monitoring method and realization system.
Background technology
Track switch is as a key equipment of wheel track traffic, its application safety is the important step that ensures train operating safety, therefore since the electric switch machine upper track, automatic monitoring, the especially indication rod of its safe condition moves accurate location becomes the focus of scientific research engineering staff research and development always.Because the space in on-the-spot harsh environment and the switch machine is limited, not only exists parameter sensing to choose, how to realize the problem of high Precision Detection, more there are problems such as the not damaged original structure of on-site installation requirement, antitheft, crashproof, rain and snow; And lack the far end supply of giving sensor and acquisition terminal power supply, more increased the difficulty of problem; Add the shortage transmission channel, not only line is to limited for existing signal cable, and transmission performance is poor, gives to realize that remote networking detects automatically and cause difficulty.Therefore, though there is numerous Lu Nei other unit to carry out long-term and arduous research and development, distance is developed reliable and practical switch indication bar operating state checking system and is still had big gap.
Summary of the invention
The objective of the invention is to improve the shortcoming of prior art, and provide a kind of wheel track point machine operating state monitoring method and realization system, reliable and practical indication rod action is location and on-line monitoring way to solve the problem and system accurately, accuracy of positioning reaches 0.03mm, can monitor the indication rod operating state of 40 track switch equipment at most simultaneously.
For achieving the above object, the present invention takes following design plan:
There are main frame, repeater in a kind of wheel track point machine operating state monitoring realization system, overlap or at least 2 cover built-in terminals (far-end), image capture device, temperature sensor, switch machine, indication rod more, utilizes a pair of signal cable to connect networking.Image capture device adopts digital camera or the imaging fibre of CMOS, CCD, by the USB transmit image data.Image capture device and temperature sensor are installed in the sensor box, and the whole sensor box is fixed on the sidewall of switch machine, are used to gather the marking image on the indication rod, and camera and temperature sensor are applicable to the switch machine of multiple model.Indication rod is positioned at switch machine inside, and indication rod breach method of inspection need be carved two certification marks on indication rod: detection and localization mark and antiposition certification mark.
A kind of wheel track point machine operating state monitoring method comprises the indication rod accurate positioning method, indication rod breach monitoring method.
1, the accurate positioning method of indication rod breach; Step is as follows:
Indication rod is positioned at switch machine inside, on indication rod, carve two certification marks and be used for detection and localization and antiposition detection, indication rod notch state to be detected is moved to the position of being convenient to sensor installation to be gathered, when switch machine install at the scene and debug up to standard after, note the position of this tense marker by digital camera; After the track switch action, small variation may take place in the state of indication rod breach, at this moment the subtle change of equivalent also can take place in the position of certification mark, note the mark position of this moment again, both are made comparisons, just can obtain the offset L of breach after current track switch action, when calculating, utilize a standard picture to assist calculating, w: the developed width of original tally, unit: mm; W ': mark width in the image that collects is a unit with the pixel; W '/w: scaling, the developed width of representing each pixel to represent, then:
2, indication rod breach monitoring method; Step is as follows:
Breach detects main frame and collects, shows, stores track switch indication rod breach data, and indication rod breach data are sent to microcomputer detecting system by the CAN bus.
Advantage of the present invention is:
1, it is little that indication rod breach data acquisition plan is subjected to the influence of switch machine model, has stronger commonality.
2, adopt the digital camera image data, good in anti-interference performance, the accuracy of detection height can reach 0.03mm, and can improve with the increase of camera number of picture elements.
3, utilize the power of embedded system, the site disposal data extract final argument and pass to signal tower detection main frame, have reduced amount of communication data and the real-time that has improved system greatly.
4, adopt the power carrier mode to communicate by letter, realized the dual-use function of far-end feed and data transmission; The FSK modulation system, good in anti-interference performance; Stable traffic rate is 9.6kbps; Communication distance is far away, can reach 7km.
5, designed succinct, perfect communication protocol voluntarily, possessed overtime re-transmission, functions such as error detection repeating transmission are guaranteed reliability of data transmission.
6, designed ± the 1.5mm warning that exceeds standard, and can simultaneously the indication rod real image uploaded, show, for maintainer's reference analysis.
7, adopt multiple means such as medium filtering, the thick data of filtering are avoided train and are pressed data acquisition in rail and the track switch course of action, reduce wrong report.
8, embedded far end system software possesses multiple fault-tolerant restorability, and utilizes the operation of hardware watchdog supervisory system, has perfect automatic recovery ability, and the assurance system can both long-time running under various mistakes and external interference.
When 9, traverse is adjusted in electronic switching machine current maintenance, only need can upgrade the reference data of native system synchronously, realize non-maintaining basically by a reset button.
10, breach detects the visualization interface that main frame provides various ways, has multiple report output means such as the curve of comprising, tabulation, daily record.
Description of drawings:
Fig. 1 indication rod certification mark diagram
Fig. 2 mark calculates diagram
Fig. 3 breach detected image calculation flow chart
Fig. 4 indication rod mark original image
Fig. 5 indication rod gap detection system pie graph
The embedded far-end on-site installation signal of Fig. 6
Fig. 7 signal cable bifurcated scheme drawing
Fig. 8 imaging fiber and result thereof
Common camera imaging of Fig. 9 and result thereof
Figure 10 CAN bus transfer frame structure
The embedded far end system constructional drawing of Figure 11
Figure 12 is from customizing communication protocol frame scheme drawing
The specific embodiment
Embodiment 1: be described further as follows below in conjunction with accompanying drawing to enforcement of the present invention:
A kind of wheel track point machine operating state monitoring method comprises the indication rod accurate positioning method, indication rod breach monitoring method,
1, indication rod accurate positioning method, step is as follows:
Illustrate as Fig. 1 indication rod certification mark, indication rod is positioned at switch machine inside, has carved two certification marks and be used for detection and localization and antiposition detection on indication rod, indication rod notch state to be detected is moved to the position of being convenient to sensor installation gather, as shown in Figure 4, a left side is a telltale mark; The right side is the antiposition mark.When switch machine install at the scene and debug up to standard after, illustrate the expression rod notch at this moment be in reference standard conditions, note the position (being called normal place) of this tense marker by digital camera; After the track switch action, small variation may take place in the state of indication rod breach, at this moment the subtle change of equivalent also can take place in the position of certification mark, note the mark position (be called change after position) of this moment again, both are made comparisons, just can obtain the offset L of breach after current track switch action.The value of Δ L can be by relatively the position of initial markers and the position of current mark obtain.But in fact, the actual shifts of breach is relevant with the distance and the photo angle of indication rod with camera.Calculate diagram as Fig. 2 mark, when calculating, utilize a standard picture to assist calculating, w: the developed width 2.4mm of original tally; W ': the mark width that collects is a unit with the pixel; W '/w: scaling, the developed width of representing each pixel to represent,
Then:
W ' and Δ L in order to obtain the breach marking image have designed image processing algorithm.Algorithm flow as shown in Figure 3.Based on the consideration to built-in terminal processing capacity and storage space limitations, algorithm at first carries out colour switching to the original image that obtains, and the RGB24 rgb image is converted to the 8bit gray-scale map that takes up room less; Then, use the denoising of shape filtering method,, utilize the grey level histogram self adaptation of image to obtain the threshold values of binaryzation according to the overall brightness of image and the situation of contrast ratio; Afterwards, utilize the threshold values that obtains that gray-scale map is carried out binaryzation, mark is extracted from background, the image after the binaryzation is shown in Fig. 8,9, and wherein Fig. 8,9 left sides are original image, and the right side is the image after the binaryzation.In order to extract the location information of scale in the binary image accurately, consider the robustness and the noise resisting ability of algorithm simultaneously, adopt the Radon conversion, the view data of two dimension is projected to the one-dimensional space handle, the parallel lines that is positioned at marker edge among Fig. 4 is exactly the scale boundary position information that obtains after the Radon conversion.If with the image lower left corner is initial point, image level is horizontal, longitudinal axis formation system of axes with vertical both direction, then can use the ordinate of every line of S1 ', S2 ' expression, if with S1, the ordinate of scale boundary position when the S2 indication notch is in normal place, then
w’＝abs(S1’-S2’)
ΔL＝(S1’-S1)+(S2’-S2)
2, indication rod breach monitoring method, step is as follows:
Breach detects that operation has host side software on the main frame, has disposed system parameter setting, line carrier communication protocol control, collection, demonstration, the storage of switch indication rod notch data, and function such as M/C interface; Simultaneously, it also is the data gather computer of microcomputer detecting system, is responsible for indication rod breach data are sent to microcomputer detecting system by the CAN bus.Embedded repeater utilizes the C51 chip microcontroller, is equipped with power carrier hardware module and retransmission process, realizes the physical layer conversion function of far-end alternating-current feeding, communication protocol.
The data frame structure that reliable transmission is arranged uses mechanism such as overtime repeating transmission, error detection re-transmission, guarantees the reliable transmission of data.Be useful on the multiple frame of condition monitoring, system control, guarantee breach detect main frame can long-range realization to the monitoring and the control of embedded far-end.
The indication rod gap detection system constitutes as shown in Figure 5, switch indication rod notch monitoring system, wherein main frame and repeater are placed in the signal tower, disposition built-in terminal (far-end) all in each point machine at the scene, utilize a pair of signal cable to connect networking, and inserted the microcomputer detecting system of signal tower by the CAN bus.
Main frame is the industrial computer of dominant frequency 1G Hz, and it is the embedded system of treater with SA-1110 that built-in terminal has comprised powerful, power carrier module, power line carrier, PLC noise data filtration module etc.The core of built-in terminal is the Strong ARM SA-1110 development board of seedling company, what the power carrier module was used is the KQ-100 carrier communication module of Chengdu strong company of section, flank speed can reach 9.6Kbps, because KQ-100 also can continual reception noise signal when not having data, the a large amount of interrupt signals that produce cause significant wastage to embedded resource, even influence the operation of normal procedure, therefore, designed power line carrier, PLC noise data filtration module, utilize the frame head information in the frame structure that the data of receiving are filtered, useful information is transmitted to built-in terminal, filters clutter simultaneously.This module realizes on C51 micro controller system W77E58,
The built-in terminal structure as shown in figure 11, Strong ARM SA-1110 embedded system is connected with the C51 micro controller system, is connected with the cmos digital camera by USB interface by RS232, the C51 micro controller system is connected with temperature sensor by RS232 with the power carrier module and is connected by general purpose I/O, and the power carrier module connects signal cable.
Repeater W77E58 chip microcontroller is connected with serial ports with host side, and main task is: finish the data forwarding between main frame and far-end.Receive the frame that main frame sends from serial ports, control communication module KQ-100 sends to far-end in the mode of modulation with frame; Control KQ-100 monitors and receives the frame that far-end sends over, and the data forwarding after the KQ-100 demodulation is arrived main frame.
Because embedded far-end has adopted powerful embedded processing up-to-date technology, the application image Processing Algorithm is extracted marker characteristic and is carried out the breach deviation calculation, directly send deviation information to the station main frame, significantly reduce data volume, can guarantee within 5 seconds, just can finish the data acquisition calculating of a far-end and the real-time monitoring performance that transmits.Embedded system also has image compression algorithm, can utilize the real image after limited communication bandwidth is uploaded compression when needing in 30 seconds, analyzes for the maintainer.
The content of mainly depositing in the data bank is: the configuration information of each embedded far-end, the normal place of indication rod breach, real-time breach data of gathering, contents such as system's running log.For the ease of checking, also designed the data base querying interface, so that carry out data search easily.
The data display of checking system can be divided into that form shows and two kinds of graphic displays.
The form display mode shows the data of being gathered with the form of tabulating, as required data are provided with querying condition, so just can filter out unconcerned data, only checks the data that need.
Graphic display is the data curve plotting of being gathered, and shows in the mode of figure.This scheme is very directly perceived, is convenient to data are analyzed comparison.Graphic display is divided into two kinds again: historical data shows and instant data display.It is to import data from data bank that historical data shows, and is depicted as diagram of curves, and the historical data demonstration both can all show former data of gathering, and also can only show the data in certain time period scope by the query time scope is set.Indication rod breach deviation when indication rod breach deviation when different curves represent that track switch is positioned at the location and track switch are positioned at antiposition.If thought the details or the general picture of solution curve, can also utilize and amplify or dwindle button curve is carried out convergent-divergent.
Breach detects main frame and is connected to by the CAN bus adapter on the CAN bus of microcomputer detecting system, realizes communicating by letter with microcomputer detecting system.Because the CAN bus possesses link layer functionality such as collision detection, overtime re-transmission, error detection repeating transmission, so the CAN bus communication of native system and microcomputer detecting system is relatively simple.
It is 11 bytes that the CAN bus protocol defines every frame length, and wherein frame head is 3 bytes, and the data field is 8 bytes.According to the standard of Ministry of Railways's " harvester communication protocol " (Ministry of Railways's signal microcomputer monitoring joint development group, 2000/6/26), native system adopts as shown in figure 10 frame structure and microcomputer detecting system to communicate.
Accurately orientate the real-time security checking system of track switch of main objective means as with electric switch machine indication rod (breach), detection and localization precision ± 0.03mm, has highly versatile, the far-end feed, speed of transmission height, far-end networking monitoring automatically, substantially exempt from the debugging maintenance, the robust detection algorithm, the system failure is from recovering the performance characteristics such as uploading image of reporting to the police.
Embodiment 2: embedded far-end (described in the embodiment 1) and image capture device, temperature sensor are positioned at the track switch scene.Wherein embedded far-end is placed in the signal transformer case (XB case), and the embedded processing software that disposes in the embedded far-end can be realized collection, processing, the feature extraction of view data, temperature data acquisition, functions such as power line carrier, PLC.In addition, can long-time running under the harsh environment of no worker monitor for making embedded far-end, on software and hardware, all designed complicated perfectly from Restoration Mechanism, make system when being subjected to extraneous great interference, can recover normal operation automatically.Adopted embedded Linux system as operating system (Embed OS) in the embedded far-end, can safely and steadily run.
Image capture device adopts digital camera or the imaging fibre of CMOS, CCD, by the USB transmit image data.Image capture device and temperature sensor are installed in the sensor box, and the whole sensor box is fixed on the sidewall of switch machine, are used to gather the marking image on the indication rod, and camera and temperature sensor all are that numeral is exported good in anti-interference performance.The image capture device that uses in this example is mesh 3000 digital cameras of eastern English video signal company, select light-emitting diode to provide light source to camera, that temperature sensor adopts is the TMPO3 of AD company, and the design of mark has very strong commonality with extraction, is applicable to the switch machine of multiple model.Fig. 6 is the on-site installation scheme drawing of embedded far-end and sensor box.From recovery measure mainly utilized in the chip with house dog mechanism, divide hardware and software two aspects:
1. hardware components: W77E58 and flush bonding processor SA1110 have started the hardware watchdog mechanism of interior band, and when making chip operation exception occur when static, high temperature etc., this mechanism can guarantee chip normally operation under the situation that no physics damages.
2. software section: in order to guarantee the normal operation of embedded Linux operating system, in system, open a counting process from Restoration Mechanism, hardware watchdog is resetted, and when operating system was locked, house dog was had an effect owing to can not get resetting of the process of counting; Simultaneously, withdraw from, finish the counting process automatically and house dog is started at the function call Shi Douhui that makes mistakes in order to prevent the application layer program exception.
Embodiment 3
The signal cable utilization be the on-the-spot original a pair of communication cable of railway.Because this a pair of cable has been connected to many groups track switch by the mode of fork, therefore utilize this a pair of cable to constitute bus-network and finish many group (being no more than 40 groups at most) switch machine breach data simultaneously and transmit, and to the feed function of embedded far-end.Consider abominable site environment (structure as shown in Figure 7 diverges) and to on-site transfer distance (trunk main distance＞2Km), and the requirement of installation environment and far-end feed, so on the PLC technology basis, designed the data frame structure of reliable transmission, use mechanism such as overtime repeating transmission, error detection re-transmission, guarantee the reliable transmission of data.Simultaneously, also designed the multiple frame that is used for the control of condition monitoring, system, guarantee breach detect main frame can long-range realization to the monitoring and the control of embedded far-end.
Frame structure explanation of the present invention:
The transmission of data during track switch is detected, the difficult point of its realization mainly contains several like this aspects:
One. long-distance transmissions.The communication distance of serial ports has only tens meters, must find a kind of mode of simple and feasible to realize the transmission of data.Utilize KQ-100, adopt the mode of carrier wave to transmit data.
Two. realize multi-point.KQ-100 itself does not have the ability of multi-point, must stipulate a kind of communication protocol, and adopt corresponding frame structure, can guarantee carrying out smoothly of multi-point.
Three. the reliability of transmission.Under the abominable at the scene communication environment, long-distance transmissions will inevitably produce error code, therefore must add technology such as error checking and correction, error detection repeating transmission in frame structure, guarantees both sides' reliable transmission.
Frame structure form of the present invention is as shown in figure 12: wherein each field is defined as: the frame synchronization head: the beginning of a Frame of expression, length is two bytes.Because clutter is more in the power line transmission, for avoiding receiving noise data, use two byte mutual-complementing codes " 13EC " among the KQ-100, such sign indicating number is difficult to occur in clutter.
Destination address: indicate the accepter of this frame, length is a byte.Address realm is 0-255, and 0 address is a host address, and 255 is broadcast address.
Data length: the byte number of " upper layer data " in the frame structure, length one byte (can in sequence-number field, expand).For guaranteeing real-time, maxim 64.In the less application of node, maxim is provided with by external command.
Frame type: represent that this frame provides the type of service, mainly contains:
1. the System self-test frame is used for main end to inquiring about its current state from end.Do not use this frame from end.
System self-test return frame be used for from the end return its current working state to main frame, main frame does not use this frame
3. the system parameter setting frame is used for the compensation value of main frame setting from each parameter of system of end, does not use this frame from end
4. system parameter setting is returned frame and is used for replying the situation that is provided with (which is provided with success, which failure) of parameter from end to main frame, and main frame does not use this frame
5. this frame of data acquisition frame is divided into two kinds of situations again, by low two decisions of code word: gather all parameters and represent that at this moment main frame wishes to gather certain all parameter from end
Gather designated parameter and represent that at this moment main frame wishes to gather certain several special parameter from end
6. data acquisition is returned this frame of frame and is divided into two kinds of situations again, by low two decisions of code word:
What return that all parameters represent to return from end this moment is all data
Return special parameter and represent that this moment, what return was certain several specific parameter, its order by
The data acquisition frame is determined
7. the re-send request may frame receives that its CRC check is non-vanishing from the frame of end (main frame) when main frame (from end), or main frame can send this frame to the other side when not receiving acknowledgement frame from end in specified time as required, retransmits frame just now to tell the other side
8. the image data transmission frame shows that what comprise in this frame is view data, according to number of frames view data is recombinated after main end is received frame
From the end reset frame when host reset when holding, send this frame.
Number of frames: be used for distinguishing the repeating frame of link, the sequence number in communication recycles, and scope is 1-255.
The CRC check sign indicating number: CRC, two CRC are a byte, use generator polynomial G (x)=x
8+ x
4+ x
3+ x
2+ 1.It can find all single errors, finds that the probability of the concentrated mistake more than 9 is 99.61%.
Upper layer data: the concrete data that transmit, extreme length are 64 bytes, for bigger view data, adopt the transmission of multiframe partitioned mode.
The gatherer process of track switch state parameter:
System adopts the communication of master slave mode structure under semiduplex mode, be that main frame carries out poll services to each from end with the station, does not have the indication of main frame can not send data from end.For improving reliability, remove individual cases, the request of main frame need be confirmed to reply from end.
Main frame regularly sends the data query frame as each from end successively, and overtime timer is set simultaneously.Main frame will guarantee that the frame that oneself sends is received from rectifying really, if sending, do not receive yet later in 5 seconds a frame (except the broadcast frame) from the end response, then from trend the other side repeating transmission frame just now, and make counting machine add one, when counts reaches 3 times, then send a misinformation, inform communication failure to the upper strata; If main frame receives from the re-send request may of end, then to sending the frame (after each the transmission, all backing up this frame) that sent just now from end, and repeating transmission is counted, when the number of times of continuous retransmission reaches 3 times, then stop and mutual from holding, report a mistake to the upper strata.
When link layer is idle, constantly intercept network from end, wait for carrier wave and frame synchronization head.After finding frame synchronization,, receive the subsequent byte of synchronous head, up to first CRC if destination address is with this machine address unanimity (or being broadcast address).Utilize CRC that frame head is detected.If make a mistake,, then directly abandon this frame owing to can't determine the address and the type of this frame; If inerrancy receives subsequent byte according to " data length ", utilize second CRC that upper layer data is tested.If data make a mistake, then send the request repeat frame to host side, at this moment, the sequence number of the repeat requests frame of transmission is the sequence number of the frame that receives; As inerrancy, then the echo reply frame backs up these frame data get off simultaneously.When the frame that receives when main frame makes a mistake, can after receiving from end, take out backup frame, directly send to main frame to sending the request retransmission frame from end.Whether received from the frame of holding not responsible affirmation oneself to send, can not start corresponding overtime timer and come to hold re-transmission backup frame just now from the trend master in overtime back by main termination.Main end is receiving behind end data, if data are entirely true, just accept, but does not send out acknowledgement frame; If mal can be to sending the repeat requests frame from end.
Claims (6)
1, a kind of wheel track point machine operating state monitoring system, jagged detection main frame, repeater, built-in terminal, image capture device, temperature sensor, switch machine, indication rod, it is characterized in that: breach detects main frame and is connected by serial ports with repeater, repeater is connected networking with built-in terminal by signal cable, breach detects main frame and is connected with microcomputer detecting system by the CAN bus, system has designed the reliable transmission of frame structure assurance data on the PLC technology basis, indication rod is positioned at switch machine inside, two certification marks are arranged: detection and localization mark and antiposition certification mark on the indication rod, image capture device adopts CMOS, the digital camera of CCD or imaging fibre, by the USB transmit image data, temperature sensor is connected with built-in terminal by general purpose I/O, image capture device and temperature sensor are installed in the sensor box, and the whole sensor box is fixed on the sidewall of switch machine.
2, a kind of wheel track point machine operating state monitoring system according to claim 1, it is characterized in that: built-in terminal comprises embedded system, C51 micro controller system, power carrier module; Embedded system is connected with the C51 micro controller system, is connected with the cmos digital camera by USB interface by RS232; The C51 micro controller system is connected by RS232 with the power carrier module, is connected by general purpose I/O with temperature sensor, and the power carrier module connects signal cable.
3, a kind of wheel track point machine operating state monitoring method is characterized in that: comprise the indication rod accurate positioning method, and indication rod breach monitoring method,
The accurate positioning method of indication rod breach; Step is as follows: indication rod is positioned at switch machine inside, on indication rod, carve two certification marks and be used for detection and localization and antiposition detection, indication rod notch state to be detected is moved to the position of being convenient to sensor installation to be gathered, when switch machine install at the scene and debug up to standard after, note the position of this tense marker by digital camera, obtain marking image; After the track switch action, small variation may take place in the state of indication rod breach, at this moment the subtle change of equivalent also can take place in the position of certification mark, notes the mark position of this moment again, and both are made comparisons, just can obtain the offset L of breach after current track switch action, Δ L is obtained by the image processing algorithm that moves on built-in terminal, when calculating, utilizes standard picture to assist calculating, w: the developed width of original tally, unit: mm; W ': mark width in the image that collects is a unit with the pixel; W '/w: scaling, the developed width of representing each pixel to represent, then:
Indication rod breach monitoring method; Step is as follows:
Breach detects main frame and collects, shows, stores track switch indication rod breach data, and indication rod breach data are sent to microcomputer detecting system by the CAN bus.
4, a kind of wheel track point machine operating state monitoring method according to claim 3, it is characterized in that: utilize image processing algorithm that the marking image that is obtained is handled, image processing algorithm has the following steps, algorithm at first carries out colour switching to the original image that obtains, and the RGB24 rgb image is converted to the 8bit gray-scale map that takes up room less; After using the denoising of shape filtering method, according to the overall brightness of image and the situation of contrast ratio, utilize the grey level histogram self adaptation of image to obtain the threshold values of binaryzation, then, gray-scale map is carried out binaryzation, mark is extracted from background, adopt the Radon conversion, the view data of two dimension is projected to the one-dimensional space to be handled, with the image lower left corner is initial point, and image level is horizontal with vertical both direction, the longitudinal axis constitutes system of axes, then can use S1 ', the ordinate of S2 ' expression scale boundary position, if use S1, the ordinate of the scale boundary position when the S2 indication notch is in normal place, then
w’＝abs(S1’-S2’)
ΔL＝(S1’-S1)+(S2’-S2)。
5, a kind of wheel track point machine operating state monitoring method according to claim 3 is characterized in that: described indication rod accurate positioning method is included in and makes specific markers with nail polish on the indication rod and represent the indication rod position.
6, a kind of wheel track point machine operating state monitoring method according to claim 3, it is characterized in that: provide light source by one group of light-emitting diode, marking image is gathered by CMOS, CCD digital camera or the imaging fibre sensor of USB interface.
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| CN104197820B (en) * | 2014-09-11 | 2017-09-29 | 赵建明 | Point machine indication rod gap width on-line real time monitoring system |
| CN104197821B (en) * | 2014-09-11 | 2016-09-07 | 上海新海信通信息技术有限公司 | Point machine indication rod gap width monitoring system and current vortex sensor thereof |
| CN104931809B (en) * | 2015-04-29 | 2018-04-10 | 北京交通大学 | A kind of subregion track switch module test system |
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| CN106585664A (en) * | 2016-12-13 | 2017-04-26 | 中国兵器装备集团自动化研究所 | Method for real-time on-line monitoring of in-place state of switch machine |
| CN107826143A (en) * | 2017-12-05 | 2018-03-23 | 北京和利时系统工程有限公司 | A kind of all-electronin track switch control module |
| CN110406561B (en) * | 2018-04-28 | 2021-06-18 | 比亚迪股份有限公司 | Switch control system and track system |
| CN110942572A (en) * | 2019-11-11 | 2020-03-31 | 广州中铁信息工程有限公司 | Voice broadcast device |
| CN111145197B (en) * | 2019-12-10 | 2022-05-03 | 电子科技大学 | Accurate turnout switch machine notch edge positioning method based on histogram and local gradient |
| CN112415927B (en) * | 2020-11-06 | 2021-12-31 | 山东德龙电子科技有限公司 | Monitoring system for photoelectric gap of point switch |
| CN113460122B (en) * | 2021-07-09 | 2023-04-18 | 北京昊鹏智能技术有限公司 | State detection method, device, equipment and medium for electric turnout switch machine system |
| CN114312905B (en) * | 2021-11-25 | 2023-01-13 | 广州智为科技发展有限公司 | Switch point rail form image real-time supervision device |
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| EP0457754B1 (en) * | 1990-05-14 | 1994-09-28 | Alcatel Austria Aktiengesellschaft | Railway switch drive |
| CN2458207Y (en) * | 2001-01-18 | 2001-11-07 | 济南铁路天龙高新技术开发有限公司 | Photoelectric monitoring alarm probe for mounting at notch of indicating rod of electric switch |
| CN2487623Y (en) * | 2001-06-19 | 2002-04-24 | 郑州辉煌科技有限公司 | Points target notch and real position monitor |
| CN2506509Y (en) * | 2001-07-16 | 2002-08-21 | 孙宋福 | Electric switch displacement monitor |
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| CN1600611A (en) | 2005-03-30 |
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