CN104442927B - RFID-based rail transit train positioning method - Google Patents
RFID-based rail transit train positioning method Download PDFInfo
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- CN104442927B CN104442927B CN201310508248.4A CN201310508248A CN104442927B CN 104442927 B CN104442927 B CN 104442927B CN 201310508248 A CN201310508248 A CN 201310508248A CN 104442927 B CN104442927 B CN 104442927B
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Abstract
The invention provides an RFID-based rail transit train positioning method. The method comprises the steps of conveying label information read by an RFID reader-writer set into a label event, wherein the RFID reader-writer set comprises four RFID reader-writers arranged at the head positions and tail positions of the upper row and lower row of a rail transit platfrom, and the RFID reader-writers read the label information from RFID labels installed at the head end and tail end of each train; converting the event information into train positioning data. By the adoption of the method, the trains can be positioned accurately, and relevant equipment, label and network state information of each station in a circuit can be detected accurately.
Description
Technical field
The present invention relates to train positioning in track traffic, carries out rail transit train positioning especially with RFID technique
Field, in particular it relates to the rail transit train localization method based on RFID.
Background technology
Jing retrievals find following pertinent literature.
Coordinate indexing result 1：
Application number：2012102542725, title：The automatic tracing-positioning system of train
A kind of automatic tracing-positioning system of train is this publication disclosed, which is used for a rail and hands over system, and which includes multiple
RFID tag, is provided with the RFID tag of the identification information at least having the train in advance on each train body；Some RFID
Signal receiver, is that interval is located at by each track with a fixed range；One work station, is connected with each RFID signal receiver.Respectively
RFID signal receiver is used to after the identification information for receiving RFID tag transmission, sends a prompting letter to the work station
Breath；The work station is believed for the position that each train is calculated according to the position of each RFID signal receiver and the information for receiving
Breath.Station staff can be freed from the manual record of frequent machinery by the automatic tracing-positioning system of the train, and
In signaling system complete failure, it is the train positioning means of driving personnel's provided auxiliary such as central schedule person, Platform attendant,
Assist follow-up operation commander.
The patent documentation receives train label information using RFID signal receiver, but the patent application is to train position
Judge fairly simple, it is impossible to judge train status, it is impossible to accurately obtain the neighboring station time, it is impossible to information of vehicles in positioning is interval, nothing
Method detection, monitoring rfid interrogator, label, network failure state, it is impossible to solve conllinear station, Y molded line bus station train positioning and ask
Topic, with more limitation.
Technical essential compares：
The present invention with the invention " the automatic tracing-positioning system of train " disclosure of that compared with, with it is following it is obvious not
Together：
1st, RFID tag coded system and quantity are significantly different：The present invention clearly states that train respectively installs a RFID end to end
5 bit length train bodies number of record, car body coded system in label, RFID tag：Front two is circuit number (00-99),
Two is car number (00-99) afterwards, and last position is first and last bit flag (0 or 1).And contrast statement in patent related application
Train RFID tag is for multiple, and the content of same train RFID tag does not have difference.
2nd, rfid interrogator quantity, read-write area requirement are significantly different：The present invention clearly states that up-downgoing platform is each end to end
One rfid interrogator is installed, a platform installs four read write lines altogether, each read write line coverage radius is arranged less than half
Vehicle commander's degree.And contrasting statement in patent related application needs RFID signal receiver some, with a fixed range as interval
By each track, the scope of fixed range is 120 meters to 180 meters.
3rd, the judgement of train status：The present invention clearly can judge train enter the station, stop, it is outbound, go out it is clear, jump station, stop
The difference train status such as overlong time, and cannot accomplish in contrasting patent.
4th, hierarchical structure is different：The present invention has different train positioning display methods to station, OCC, COCC different levels,
Can show station, interval in vehicle location situation；And contrast the content without OCC, COCC correlation level in patent.
5th, neighboring station time accuracy is different：The present invention sets out in advance to make arrangements departure time, record of the rear station time of advent, aobvious for train
Show it is defined by the correspondence station actually detected time to train；And this partial content is had no in contrasting patent, refer only to " root
The front arrival time of the train can be estimated according to the running status of train ".
6th, orientation range difference (station, interval)：The present invention is proposed vehicle location positioning in the outbound back zone of train
Solution and monitoring means of intervention；This partial content is had no in contrast patent.
7th, the inquiry of historical data (station, OCC)：The present invention can AT STATION, OCC looked into train position history data
Ask；Without related content in contrast patent, refer only to " realize the generation and management ... ... of train operation daily record, and need when
Wait the train operation daily record that each train is generated by staff's derivation and after arranging "；
8th, equipment fault detection：The present invention proposes the method to rfid interrogator equipment fault monitoring and intervenes path,
Without related content in contrast patent；
9th, tag state monitoring：The present invention proposes the method to RFID tag malfunction monitoring and intervenes path, and contrast is special
Without related content in profit；
10th, Network Expert Systems：The present invention is proposed to the network hardware equipment Network Expert Systems such as industrial computer, server
Method and intervene path, and contrast patent in without related content.
Although being all to note by RFID technique from relatively the can be seen that present invention and contrast patent of above technical essential
The RFID tag of record train information is written and read, so as to judge train position.But the present invention and the technology for contrasting patent application
Scheme has significantly different, and with prominent substantive distinguishing features.
Coordinate indexing result 2：
Application number：201120034541.8, title：A kind of high-precision train positioning system based on radio-frequency technique
The patent documentation provides a kind of high-precision train positioning system based on radio-frequency technique, including：Some radio-frequency cards,
At least one reader and process computer；Radio-frequency card is arranged in orbit on fixture, for sending out of responding that reader sends
Signal is penetrated, reflected signal is returned；Reader, is arranged on railcar, for processing the reflected signal of radio-frequency card return, is somebody's turn to do
The card number of radio-frequency card；The radio-frequency card card number is sent to into process computer；Processing computer calls radio-frequency card data base to recognize
The location information corresponding with the radio-frequency card card number.The train positioning system inherits the plurality of advantages of radio-frequency technique, overcomes
The problems of prior art, accurate in harsh environment effectively can work.In addition, this utility model have also been devised
The error correction scheme of the alignment system, further increases the detection degree of accuracy of the train positioning system, meets current orbit
The requirements at the higher level proposed to detecting system by transport development.
The positioning mainly to geographical position residing for vehicle that the patent documentation is solved, but station up-downgoing station can not be solved
The problems such as train in/out station time of platform, state are positioned and putting maintenance into practice difficulty is bigger.
Technical essential compares：
The present invention compared with a kind of invention " high-precision train positioning system based on radio-frequency technique " disclosure of that,
With following significantly different：
1st, RFID reader of the invention is arranged on platform, and RFID tag is installed ON TRAINS, is processed computer and is installed
Machine room AT STATION；The RFID reader of contrast patent is installed ON TRAINS, and RFID radio-frequency cards are installed on fixture in orbit,
Process computer to install ON TRAINS；
2nd, the purpose of the present invention be mainly all trains in positioning line fault pass in and out arbitrary station (uplink/downlink platform) when
Between, it is that the real-time overall of all vehicles in use in circuit is held；And the purpose for contrasting patent is to position a certain train row
The particular location in circuit is entered, has been the positioning to individual train position in circuit, station, OCC can not obtain train in real time
Positional information；
3rd, the equipment in the present invention is mainly AT STATION, and RFID tag is only installed on train, and putting maintenance into practice is more prone to；
And contrast patent and the position of each in circuit will be positioned, difficulty is very big, is mainly reflected in：Need the rail in circuit
Label is installed on fixture by road, block section between stations are general several kilometers, can park tens trains simultaneously, in order to be accurately positioned row
Car, needs to install a large amount of labels on fixture in orbit, and the replacing of simultaneous faults label is cumbersome.
The content of the invention
For above-mentioned defect of the prior art, the technical problem to be solved in the present invention is to provide one kind and is applied to track friendship
Logical field, based on RFID technique and the train locating method unrelated with signaling system.The method can accurately judge train status,
The neighboring station time is accurately obtained, information of vehicles in interval, detection, monitoring rfid interrogator, label, network failure shape can be positioned
State, and solve conllinear station, Y molded line bus station train orientation problem.
The technical problem to be solved in the present invention：
1) position platform residing for train (an island platform/side platform) position (upstream side/downlink side) in station；
2) train next stop time departure, our station time of advent are shown, our station time departure, is stood the time of advent afterwards；
3) show that train enters the station, stops in station, outbound, jump is stood, the dwell time crosses long status；
4) the interval interior information of vehicles of circuit；
5) solve conllinear station train orientation problem；
6) solve Y molded line road train orientation problem；
7) the current all vehicle in use information of circuit；
8) each station relevant device, label, network state information in circuit.
According to the rail transit train localization method based on RFID that the present invention is provided, comprise the steps：
Step 1：The label information that rfid interrogator group is read is converted to into label event, wherein, rfid interrogator group bag
4 rfid interrogators of the rail traffic platform up-downgoing both sides end to end at position are included, rfid interrogator is from positioned at each train head
Label information is read in the RFID tag that tail two ends are installed；
Step 2：Event information is converted to into train location data.
Preferably, comprise the steps：
Monitor whether to read label information, if not reading label information, produce rfid interrogator and read less than label thing
Part.
Preferably, label information includes circuit number, car number, first and last bit flag.
Preferably, label event include it is following any one or appoint various events：Upper end of line read write line reads headstock label letter
Breath；
Lower wardrobe read write line reads headstock label information；
Lower wardrobe read write line is read less than headstock label information；
Lower wardrobe read write line reads tailstock label information；
Lower wardrobe read write line is read less than tailstock label information；
Upper end of line read write line reads tailstock label information；
Upper end of line read write line is read less than tailstock label information；
Upper end of line read write line is read less than headstock label information；
Upper end of line read write line is read less than tailstock label information；
Upper wardrobe read write line reads headstock label information；
Upper wardrobe read write line reads tailstock label information；
Upper wardrobe read write line is read less than headstock label information；
Upper wardrobe read write line is read less than tailstock label information；
Lower end of line read write line reads headstock label information；
Lower end of line read write line reads tailstock label information；
Lower end of line read write line is read less than headstock label information；
Lower end of line read write line is read less than tailstock label information.
Preferably, the step 2 include it is following any one or appoint multiple steps：
- when tailstock read write line reads certain train label, and up-downgoing platform without this train, train enters the station, record
Train enters the station the time, and using the first and last flag bit in this label as train head flag bit；
When-train enters the station, according to the platform that train enters the station, pre-configured upper station IP address, inquiry upper are found
In standing, car body number is identical and outbound but rear station time of advent is empty record, using vehicle a upper station time departure as this
The next stop departure time stood is recorded in our station；The vehicle time of advent of our station is stood as after the vehicle at upper station and is recorded the time of advent
At a upper station；When the our station time of advent of train is earlier than upper station time departure, the upper station time departure of our station does not show；Work as row
The upper station departure time of car compared with our station time of advent more than threshold value when, the upper station time departure of our station does not show；
- tailstock read write line reads train label, when the train is that heteropleural platform does not leave vehicle, does not process；Train is
When homonymy platform does not leave vehicle, homonymy platform vehicle condition adjudgement is carried out：Tailstock read write line reads train tail tag label, and vehicle stops
Stand；
- headstock read write line reads train label, when train is that heteropleural platform does not leave vehicle, does not process；Train is same
When side platform does not leave vehicle, homonymy platform vehicle condition adjudgement is carried out：Headstock read write line reads train leader label, and vehicle stops
Stand；
- headstock read write line reads train tail tag label, and vehicle is outbound, the record train outbound time；
- headstock read write line is read less than train label, when the train is that heteropleural platform does not leave vehicle, does not process；The row
When car is that homonymy platform does not leave vehicle, homonymy platform vehicle condition adjudgement is carried out：Headstock read write line is read less than train tail tag label,
Vehicle goes out clearly, and train is removed from homonymy platform；
- train from enter the station the outbound minimum dwell time less than metro operation when, train dispaly state is to jump station, i.e. train
Through not stopping；Minimum dwell time parameter can be according to the actual adjustment of subway station operation；
- train from enter the station it is outbound more than metro operation maximum the dwell time when, train dispaly state be dwell time mistake
Long, i.e. train long-time is detained；Maximum dwell time parameter can be according to the actual adjustment of subway station operation.
Preferably, also comprise the steps：
Setting rfid interrogator automatically uploads heart beating text per the N seconds, when rfid interrogator active upload is not received in the N+M seconds
Heart beating text or label data information, automatically by rfid interrogator status indication be failure, failure cause is receiving data
Time-out；When the continuous K train information of rfid interrogator is not detected by, automatically by rfid interrogator status indication be failure, failure
Reason is not receive information of vehicles；Rfid interrogator fault message is uploaded to the equipment real time fail table and equipment of OCC automatically
In historical failure table.
Preferably, also comprise the steps：
When rfid interrogator reads label information, when corresponding label mode bit is shown as electronegative potential, automatically by label-like
State is labeled as failure, and failure cause is electronegative potential；When train is outbound from entering the station, there are four rfid interrogators of a label not
When reading, tag state is labeled as into failure automatically, failure cause is not read；Tag failure information is uploaded to OCC automatically
Equipment real time fail table and device history bug list in.
Compared with prior art, the present invention has following beneficial effect：
1st, the present invention accurately can judge platform residing for train in station (an island platform/side platform) position (upstream side/
Downlink side)；
2nd, when the present invention can show that train next stop time departure, our station time of advent, our station time departure, rear station reach
Between；
3rd, the present invention can interpolate that train enters the station in station, stop, outbound, jump is stood, the dwell time crosses long status；
4th, the present invention can be explicitly shown information of vehicles in railroad section；
5th, the present invention can solve the problem that conllinear station train orientation problem；
6th, the present invention can solve the problem that Y molded line road train orientation problem；
7th, the present invention being capable of the current all vehicle in use information of circuit；
8th, the present invention can accurately detect each station relevant device, label, network state information in circuit.
Description of the drawings
Detailed description non-limiting example made with reference to the following drawings by reading, the further feature of the present invention,
Objects and advantages will become more apparent upon：
Fig. 1 is Hardware Hierarchy figure.
Fig. 2 is that station read write line is distributed and names schematic diagram.
Fig. 3 is rfid interrogator read range schematic diagram.
Specific embodiment
With reference to specific embodiment, the present invention is described in detail.Following examples will be helpful to the technology of this area
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill to this area
For personnel, without departing from the inventive concept of the premise, some deformations and improvement can also be made.These belong to the present invention
Protection domain.
The technology program that the present invention is adopted is as follows：
1st, RFID tag is installed at each train head in circuit, tail two ends, record in label the train car body number and
The first and last bit flag at mark vehicle two ends.Car body number is 5 regular lengths, and front two is circuit number (00-99), and two are afterwards
Car number (00-99), last position are first and last bit flag (0 or 1).The circuit number of different rail transportation operation circuits can not
It is identical；In same rail transportation operation circuit, the car number of different vehicle can not be identical；Same rail transportation operation circuit is same
The first and last bit flag of one vehicle can not be identical.
2nd, the up-downgoing platform at each station respectively installs two rfid interrogators (totally four read write lines) end to end.According to train
Relative position when coming to a complete stop is referred to as tailstock read write line, headstock read write line；Read write line should meet following condition：Train is passed in and out
Speed stand in below 80km/h, each read write line in two read write lines of the headstock tailstock at least reads the headstock of a train
The tailstock label of label, a train；Rfid interrogator on train direct of travel nearby should be earlier than the RFID read-write of distant place
Device reads train label.
3rd, when the RFID tag of train is in the range of the rfid interrogator, rfid interrogator can repeatedly (1～it is hundreds of
It is secondary) RFID tag is read, it is converted into read write line and reads label event and read write line reading less than label event by this method.Work as reading
Write device read same label more than predetermined number of times when, produce read write line read label event；When read write line is one within a period of time
It is secondary when also not reading label, produce read write line and read less than label event.Read how many secondary labels produce read label event can be with
Adjusted by configuration parameter；How long read to produce less than label and read to adjust by configuration parameter less than event；With this
Come avoid different stations due to read write line equipment difference caused difference.
4th, the sequencing of vehicle train first and last position label is read come automatic identification train institute by different platform read write lines
The platform that enters the station at place；Afterbody read write line reads vehicle tag earlier than head read write line, then the vehicle traveling direction is matched somebody with somebody with read write line
The direct of travel put is identical.
5th, the sequencing of vehicle train first and last position label is read by read write line come the platform that enters the station of automatic identification train,
Enter the station time, outbound time and be converted into train enter the station, stop, it is outbound, go out it is clear, jump station, dwell time long various shapes
State.
When tailstock read write line reads certain train label, and up-downgoing platform without this train, train enters the station, and with this
First and last flag bit in label is used as train head flag bit.For example：When upper end of line read write line reads certain train label, such as
Really the train is not the train that up-downgoing platform does not leave, then the up platform train enters the station.
When tailstock read write line reads train label, when the train is that heteropleural platform does not leave vehicle, do not process；The train
When being that homonymy platform does not leave vehicle, homonymy platform vehicle condition adjudgement is carried out：Tailstock read write line reads train tail tag label, vehicle
Stop；
When headstock read write line reads train label, when the train is that heteropleural platform does not leave vehicle, do not process；The train
When being that homonymy platform does not leave vehicle, homonymy platform vehicle condition adjudgement is carried out：Headstock read write line reads train leader label, vehicle
Stop；Headstock read write line reads train tail tag label, and vehicle is outbound, the record train outbound time；
When headstock read write line is read less than train label, when the train is that heteropleural platform does not leave vehicle, do not process；The row
When car is that homonymy platform does not leave vehicle, homonymy platform vehicle condition adjudgement is carried out：Headstock read write line is read less than train tail tag label,
Vehicle goes out clearly, and train is removed from homonymy platform；
When train from enter the station it is outbound less than metro operation minimum dwell time (40 seconds) when, train dispaly state for jump
Stand, i.e., train is not through stopping；Minimum dwell time parameter can be according to the actual adjustment of subway station operation.
When train from enter the station outbound maximum dwell time (180 seconds) more than metro operation when, train dispaly state is to stop
Stand overlong time, i.e. train long-time is detained；Maximum dwell time parameter can be according to the actual adjustment of subway station operation, such as terminus
The train time of staying may be more than 180 seconds.
6th, station is equipped with rfid interrogator, therefore can accurately judge train position；When train is outbound but does not reach next
Before station, train is located in interval.Every circuit, different car block section between stations length are all different, and train is put into from station
It is next interval interior, when train gets to the station, delete the information of vehicles in a upper interval.It is not in upper one interval when vehicle is reached
Earliest vehicle when, in the display alarm of OCC ends until the warning is artificially confirmed or the train is detected at other stations.
7th, for the conllinear platform of a plurality of circuit (such as the line of Shanghai 3,4), it is not necessary to extra to increase read write line equipment, according to reading
The label coding difference that device is read is write, confirms that current station reaches which circuit vehicle belongs to, and shows in the OCC of corresponding line
Train position.
8th, for Y molded line road (such as the line New City Jiading of Shanghai 11, No. 10 line Long Xilu), in station, there are two platforms (
Island side)：Two tracks of up direction, one track of down direction.For the up direction of this platform carrys out car, according to train
Vehicle number information inquire about a upper station through information of vehicles, determine train on earth on which bar track.
9th, the current all vehicle in use information of circuit；
The route map of train at pre-production circuit station, is station, the unique positional information of interval determination, when station is detected
When entering the station to train, refresh the corresponding train of interchange of position and show；When train is outbound, train display location is moved to into our station
In the interval of the next stop.So, the renewal by each station to train position information, it is possible to work as in OCC circuits
Front all vehicle in use information.
10th, each station relevant device, label, network state information in circuit
Can show in real time on the equipment state figure of OCC when read write line failure and detect equipment fault.Read write line event
Barrier is divided into following two：Equipment heart beating text is not received within 30 seconds；Continuous 3 train informations of read write line are not detected by (with other readings
Write whether device detects train information as standard).When there is read write line failure, station is actively to OCC synchronizer states
Equipment fault is simultaneously charged to equipment fault historical information by real time information.
Can show in real time on the tag state figure of OCC when tag failure and detect tag failure.Tag failure point
For following two：Label electronegative potential, label are not detected by.When train enters the station, tailstock read write line successively reads headstock, tailstock mark
Label information, when the information about power of label is shown as electronegative potential, station actively to OCC sync tag state real time information and will be marked
Sign failure and charge to tag failure historical information.When train is outbound from entering the station, there are four read write lines of a label not read
When, station active charges to tag failure historical information to OCC sync tag state real time information and by tag failure.
Can show on the device network real-time status figure of OCC when hardware device network failure and detect network event
Barrier.
As follows the present invention is described in more detail.
Embodiment 1：As shown in figure 1, respectively installing a rfid interrogator end to end in rail traffic platform up-downgoing both sides, read
Write device and access station controller main frame, station controller main frame is connected by independent network interface card with station Che Kong rooms, is looked into for car control room
See the positioning real time information of our station train, historical information；Station controller main frame accesses rail line communication transfer net, with which
His station connects, so as to obtain train the upper station departure time and after stand the time of advent；OCC(operating control
Center, the i.e. management mode at one center of a line) server access rail line communication transfer net, arrange so that station uploads
Car positioning real time information, historical information, equipment, tag state information.Read write line distributing position and naming method are as shown in Figure 2.
Embodiment 2：As shown in figure 3, each rfid interrogator has certain working range, when label is read and write into read write line
The label information read is uploaded to station controller by scope, read write line, and the inventive method receives the label information of read write line,
It is converted into into read write line and reads label event；And label event is read in monitoring, automatically generate read write line and read less than label thing
Part.
According to the processing mode of the present invention, the whole flow process of train in/out station platform can be converted into 16 event informations, with
As a example by up platform car turnover：
Before the up train enters the station, 2 event informations are produced：
1) on, end of line read write line reads headstock label information；
2) under, wardrobe read write line reads headstock label information；
The up train enters the station to and comes to a complete stop, and produces 6 event informations；
3) on, end of line read write line is read less than headstock label information；
4) under, wardrobe read write line is read less than headstock label information；
5) on, end of line read write line reads tailstock label information；
6) under, wardrobe read write line reads tailstock label information；
7) on, wardrobe read write line reads headstock label information；
8) under, end of line read write line reads headstock label information；
The up train come to a complete stop it is leaving from station, produce 6 event informations；
9) on, end of line read write line is read less than tailstock label information；
10) under, wardrobe read write line is read less than tailstock label information；
11) on, wardrobe read write line reads tailstock label information；
12) under, end of line read write line reads tailstock label information；
13) on, wardrobe read write line is read less than headstock label information；
14) under, end of line read write line is read less than headstock label information；
The up train thoroughly leaves, and produces 2 event informations：
15) on, wardrobe read write line is read less than tailstock label information；
16) under, end of line read write line is read less than tailstock label information；
Descending platform train turnover process is similar to therewith, and produces 16 event informations.
Why it is 16 events rather than 8 eventsI.e. unilateral platform vehicles while passing only has this side rfid interrogator to read
To vehicle tag information.This is because, during vehicle pull-in headstock through tailstock read write line or it is outbound when the tailstock through headstock read
The speed for writing device is very fast (up to 80km/h when maximum), and rfid interrogator power is wanted sufficiently large and can read high-speed mobile
FRID label information, and rfid interrogator power also implies that greatly the distance of reading is remote；As platform length is typically much deeper than
The spacing of upper and lower platform, as shown in figure 3, therefore offside read write line inevitably reads the train information of this side.
Embodiment 3：It is converted into rail vehicle control room monitoring personnel according to 16 event informations by the inventive method
Time of entering the station of the up-downgoing platform vehicle that can be recognized, outbound time and train enter the station, stop, it is outbound, go out it is clear, jump station,
Dwell time long various states.
1) when tailstock read write line reads certain train label, and up-downgoing platform without this train, train enters the station, record
Train enters the station the time, and using the first and last flag bit in this label as train head flag bit.
2), when train enters the station, the platform (up platform/descending platform) entered the station according to train finds pre-configured upper
One station (our station up-downlink direction upper a station different) IP address, inquires about that car body number in a upper station is identical and outbound but rear station is arrived
It is empty record up to the time, time departure of the vehicle at a upper station was recorded in our station as the next stop departure time of our station；Will
The vehicle time of advent of our station was recorded at a upper station as the time of advent of standing after the vehicle at upper station.When our station time of advent of train
During earlier than upper station time departure, the upper station time departure of our station does not show；When reaching with our station the upper station departure time of train
Between when comparing more than 10 minutes, the upper station time departure of our station does not show.
3) tailstock read write line reads train label, when the train is that heteropleural platform does not leave vehicle, does not process；Train is
When homonymy platform does not leave vehicle, homonymy platform vehicle condition adjudgement is carried out：Tailstock read write line reads train tail tag label, and vehicle stops
Stand；
4) headstock read write line reads train label, when train is that heteropleural platform does not leave vehicle, does not process；Train is same
When side platform does not leave vehicle, homonymy platform vehicle condition adjudgement is carried out：Headstock read write line reads train leader label, and vehicle stops
Stand；
5) headstock read write line reads train tail tag label, and vehicle is outbound, the record train outbound time；
6) headstock read write line is read less than train label, when the train is that heteropleural platform does not leave vehicle, does not process；The row
When car is that homonymy platform does not leave vehicle, homonymy platform vehicle condition adjudgement is carried out：Headstock read write line is read less than train tail tag label,
Vehicle goes out clearly, and train is removed from homonymy platform；
7) train from enter the station it is outbound less than metro operation minimum dwell time (40 seconds) when, train dispaly state for jump
Stand, i.e., train is not through stopping；Minimum dwell time parameter can be according to the actual adjustment of subway station operation.
8) train from enter the station outbound maximum dwell time (180 seconds) more than metro operation when, train dispaly state is to stop
Stand overlong time, i.e. train long-time is detained；Maximum dwell time parameter can be according to the actual adjustment of subway station operation, such as terminus
The train time of staying may be more than 180 seconds.
Embodiment 4：When OCC selects certain station, the inventive method can obtain the real-time train location information in station automatically
It is displayed in OCC monitored pictures.
Embodiment 5：Can check AT STATION our station train positioning historical data, also can OCC according to circuit, station, stand
Platform, car body number, state, these conditional combination inquiries of date meet the train position history data of condition.The daily train in station
Location information is transferred in historical data information table after operation is stopped, while being synchronized to the historical data information table of OCC.According to
The sequencing at station carries out the synchronous working of OCC historical datas according to regular hour skew, to avoid same time OCC nets
Network load excessive and synchrodata are excessive.
Embodiment 6：Can in OCC checks circuit station, interval in train information.When train position judges to make a mistake
When, can be in the monitoring interface display alarm of OCC.Implementation：
Whole stations and block information in circuit has been pre-configured with AT STATION, as interval between adjacent two station：XX stations-
XX stations are interval；All stations and interval corresponding positional information in OCC has been pre-configured with circuit.When train enters the station, first
Information of the vehicle number for Current vehicle in all positions in deletion circuit；Then incoming train number is included at correspondence up-downgoing station
The station correspondence position of platform；When vehicle is leaving from station, by the information deletion that vehicle number in all positions in circuit is Current vehicle, then
Corresponding interval is found, will be train number corresponding with corresponding interval location number；When next our station train leaves, equally by train
Information is deleted from other positions, is moved in interval；When vehicle reaches the next stop to enter the station, information of vehicles is deleted from interval automatically
Remove.In deletion interval is spread during train, if the train before the train is not also reached, then this method thinks above train
Abnormal state, makes a mark, the display alarm on the route map of train of OCC.
Embodiment 7：The inventive method can the single rfid interrogator failure of automatic detection, also dependent on other read write line states
Comprehensive descision read write line failure, and read write line fault message is uploaded to the equipment real time fail table and device history of OCC automatically
In bug list.Implementation：The inventive method can receive the heart beating text of rfid interrogator transmission per 10 seconds, when not receiving in 30 seconds
To the heart beating text or label data information of rfid interrogator active upload, it is failure by read write line status indication automatically, therefore
Barrier reason is receiving data time-out；When continuous 3 train informations of read write line are not detected by (whether detecting row with other read write lines
Car information is used as standard), it is failure by read write line status indication automatically, failure cause is not to receive information of vehicles.Read write line
Fault message is uploaded in the equipment real time fail table and device history bug list of OCC automatically.
Embodiment 8：The inventive method can the single RFID tag failure of automatic detection, comprehensively sentence also dependent on read write line state
Disconnected tag failure, and automatically tag failure information is uploaded in the equipment real time fail table and device history bug list of OCC.It is real
Existing mode：When read write line reads label information, when corresponding label mode bit is shown as electronegative potential, automatically by tag state labelling
For failure, failure cause is electronegative potential；When train is outbound from entering the station, when having four read write lines of a label not read,
Automatically tag state is labeled as into failure, failure cause is not read.The equipment that tag failure information is uploaded to OCC automatically is real-time
In bug list and device history bug list.
Embodiment 9：The inventive method can monitor the device network connection at each station in OCC, so that discovery sets in time
Standby network failure.Implementation：Station equipment state is inquired about by snmp protocol, when device status inquiries time-out display device net
Network failure, corresponding device are changed into red.
Above the specific embodiment of the present invention is described.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, those skilled in the art can make various modifications or modification within the scope of the claims, this not shadow
Ring the flesh and blood of the present invention.
Claims (1)
1. a kind of rail transit train localization method based on RFID, it is characterised in that comprise the steps：
Step 1：The label information that rfid interrogator group is read is converted to into label event, wherein, rfid interrogator group includes rail
Road traffic platform up-downgoing both sides 4 rfid interrogators end to end at position, rfid interrogator is from positioned at each train end to end two
Label information is read in the RFID tag that end is installed；
Step 2：Event information is converted to into train location data；
Comprise the steps：
Monitor whether to read label information, if not reading label information, produce rfid interrogator and read less than label event；
Label information includes circuit number, car number and first and last bit flag；
Label event include it is following any one or appoint various events：Upper end of line read write line reads headstock label information；
Lower wardrobe read write line reads headstock label information；
Lower wardrobe read write line is read less than headstock label information；
Lower wardrobe read write line reads tailstock label information；
Lower wardrobe read write line is read less than tailstock label information；
Upper end of line read write line reads tailstock label information；
Upper end of line read write line is read less than tailstock label information；
Upper end of line read write line is read less than headstock label information；
Upper end of line read write line is read less than tailstock label information；
Upper wardrobe read write line reads headstock label information；
Upper wardrobe read write line reads tailstock label information；
Upper wardrobe read write line is read less than headstock label information；
Upper wardrobe read write line is read less than tailstock label information；
Lower end of line read write line reads headstock label information；
Lower end of line read write line reads tailstock label information；
Lower end of line read write line is read less than headstock label information；
Lower end of line read write line is read less than tailstock label information；
The step 2 include it is following any one or appoint multiple steps：
- when tailstock read write line reads certain train label, and up-downgoing platform without this train, train enters the station, and records train
Enter the station the time, and using the first and last flag bit in this label as train head flag bit；
When-train enters the station, according to the platform that train enters the station, pre-configured upper station IP address is found, inquired about in a upper station
Car body number is identical and outbound but rear station time of advent is empty record, using vehicle a upper station time departure as our station
Departure time record set out in advance to make arrangements in our station；The vehicle time of advent of our station is stood as after the vehicle at upper station and is recorded upper the time of advent
One station；When the our station time of advent of train is earlier than upper station time departure, the upper station time departure of our station does not show；When train
The upper station departure time compared with our station time of advent more than threshold value when, the upper station time departure of our station does not show；
- tailstock read write line reads train label, when the train is that heteropleural platform does not leave vehicle, does not process；Train is homonymy
When platform does not leave vehicle, homonymy platform vehicle condition adjudgement is carried out：Tailstock read write line reads train tail tag label, and vehicle stops；
- headstock read write line reads train label, when train is that heteropleural platform does not leave vehicle, does not process；Train is homonymy station
When platform does not leave vehicle, homonymy platform vehicle condition adjudgement is carried out：Headstock read write line reads train leader label, and vehicle stops；
- headstock read write line reads train tail tag label, and vehicle is outbound, the record train outbound time；
- headstock read write line is read less than train label, when the train is that heteropleural platform does not leave vehicle, does not process；The train is
When homonymy platform does not leave vehicle, homonymy platform vehicle condition adjudgement is carried out：Headstock read write line is read less than train tail tag label, vehicle
Go out clearly, train is removed from homonymy platform；
- train from enter the station it is outbound less than metro operation minimum the dwell time when, train dispaly state for jump station, i.e., train pass through
Do not stop；Minimum dwell time parameter can be according to the actual adjustment of subway station operation；
- train from enter the station it is outbound more than metro operation maximum the dwell time when, train dispaly state be the dwell time it is long, i.e.,
Train long-time is detained；Maximum dwell time parameter can be according to the actual adjustment of subway station operation；
Also comprise the steps：
Setting rfid interrogator uploads automatically heart beating text per the N seconds, when the heart that rfid interrogator active upload is not received in the N+M seconds
Text or label data information are jumped, is failure by rfid interrogator status indication automatically, failure cause is receiving data time-out；
When the continuous K train information of rfid interrogator is not detected by, it is failure by rfid interrogator status indication automatically, failure cause is
Information of vehicles is not received；Rfid interrogator fault message is uploaded to the equipment real time fail table of OCC and device history event automatically
In barrier table；
Also comprise the steps：
When rfid interrogator reads label information, when corresponding label mode bit is shown as electronegative potential, automatically by tag state mark
Failure is designated as, failure cause is electronegative potential；When train is outbound from entering the station, there are four rfid interrogators of a label not read
Then, tag state is labeled as into failure automatically, failure cause is not read；Tag failure information is uploaded to setting for OCC automatically
In standby real time fail table and device history bug list.
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| CN108877275A (en) * | 2018-06-29 | 2018-11-23 | 长沙润伟机电科技有限责任公司 | A kind of train arrives at a station detection system and its train |
| CN109131449B (en) * | 2018-09-30 | 2019-07-12 | 南京地铁集团有限公司 | The aided positioning system and its method of urban railway transit train under failure environment |
| CN109278810A (en) * | 2018-10-26 | 2019-01-29 | 厦门路桥信息股份有限公司 | Rail traffic vehicle scheduling auxiliary system |
| WO2020187447A1 (en) * | 2019-03-20 | 2020-09-24 | Sew-Eurodrive Gmbh & Co. Kg | Rail system with rail, coding system, mobile part that can be moved along the rail and method for operating a rail system |
| CN110356435B (en) * | 2019-06-12 | 2021-01-22 | 北京全路通信信号研究设计院集团有限公司 | Train automatic driving system based on electronic beacon |
| CN110516764A (en) * | 2019-07-30 | 2019-11-29 | 群淂数码科技（上海）有限公司 | Vehicle identification method and its system based on UHF RFID |
| CN111245894A (en) * | 2019-12-29 | 2020-06-05 | 航天信息股份有限公司 | Batch configuration method and system for electronic identification reader-writer equipment of motor vehicle |
| CN112896241B (en) * | 2021-04-01 | 2022-11-04 | 四川硕享科技有限公司 | High-reliability positioning system special for railway |
| CN113792562A (en) * | 2021-09-16 | 2021-12-14 | 华南农业大学 | High-frequency RFID (radio frequency identification) positioning reader of electric single-rail conveying equipment |
| CN114559989B (en) * | 2022-01-26 | 2023-07-14 | 广州新科佳都科技有限公司 | Train positioning method, device, terminal equipment and storage medium |
| CN115366958B (en) * | 2022-08-25 | 2023-08-22 | 中车青岛四方机车车辆股份有限公司 | Self-diagnosis method, system and data management system |
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