CN104442927A - RFID-based rail transit train positioning method - Google Patents
RFID-based rail transit train positioning method Download PDFInfo
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- CN104442927A CN104442927A CN201310508248.4A CN201310508248A CN104442927A CN 104442927 A CN104442927 A CN 104442927A CN 201310508248 A CN201310508248 A CN 201310508248A CN 104442927 A CN104442927 A CN 104442927A
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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 location in track traffic, particularly use RFID technique to carry out the field of rail transit train location, particularly, relate to the rail transit train localization method based on RFID.
Background technology
Following pertinent literature is found through retrieval.
Correlative indexing result 1:
Application number: 2012102542725, title: the automatic tracing-positioning system of train
This publication disclose the automatic tracing-positioning system of a kind of train, it hands over system for a rail, and it comprises multiple RFID label tag, and each train body is provided with the RFID label tag of the identifying information having this train at least in advance; Some RFID signal receivers, with a fixed range for interval is located at by each track; One workstation, is connected with each RFID signal receiver.Each RFID signal receiver all for after the identifying information receiving RFID label tag transmission, sends an information to this workstation; This workstation is used for the location information calculating each train according to the position of each RFID signal receiver and the information that receives.Station staff can free by the automatic tracing-positioning system of this train from the manual record of frequent machinery, and when signal system is entirely ineffective, for the driving such as central schedule person, Platform attendant personnel provide auxiliary train positioning means, assist follow-up operation commander.
This patent documentation adopts RFID signal receiver to receive train label information, but the judgement of this patent application to train position is fairly simple, train status cannot be judged, cannot the Obtaining Accurate neighboring station time, cannot information of vehicles in positioning area, cannot detect, monitor rfid interrogator, label, network failure state, conllinear station, Y molded line bus station train orientation problem cannot be solved, there is more limitation.
Technical essential compares:
The present invention, compared with the content disclosed in this invention " the automatic tracing-positioning system of train ", has following obvious difference:
1, RFID label tag coded system and quantity are obviously different: explicit state train of the present invention respectively installs a RFID label tag end to end, record 5 bit length train bodies number in RFID label tag, car body coded system: front two is circuit number (00-99), latter two is car number (00-99), and last position is first and last bit flag (0 or 1).And the train RFID label tag contrasting statement in patent related application is multiple, and the content of same train RFID label tag does not have difference.
2, rfid interrogator quantity, read-write area requirement obviously difference: explicit state up-downgoing platform of the present invention respectively installs a rfid interrogator end to end, and four read write lines installed altogether by a platform, and each read write line coverage radius is less than half train length.And to contrast in patent related application statement and need RFID signal receiver some, with a fixed range for being located at by each track in interval, the scope of fixed range is 120 meters to 180 meters.
3, the judgement of train status: the present invention can clearly judge that train enters the station, stop, set off, go out clearly, jump the different train status such as station, dwell time be long, and contrasts in patent and cannot accomplish.
4, hierarchical structure is different: the present invention has different train positioning display methods to station, OCC, COCC different levels, can show the vehicle location situation in station, interval; And contrast in patent the content of level of being correlated with without OCC, COCC.
5, accuracy is different the neighboring station time: the present invention is detect that the time of train is as the criterion so that corresponding station is actual for set out in advance to make arrangements time of departure, the record of rear station time of advent, display of train; And contrast in patent and there is no this part content, only mention " the front arrival time that this train can be estimated according to the running state of train ".
6, bearing zone difference (station, interval): the present invention proposes terms of settlement and monitoring means of intervention to vehicle location location in train departures back zone; This part content is there is no in contrast patent.
7, the inquiry of historical data (station, OCC): the present invention can AT STATION, OCC inquires about train position history data; Without related content in contrast patent, only mention " realize generation and the management of train operation daily record ..., and after being derived by staff when needing and arranging, generate the train operation daily record of each train ";
8, breakdown of equipment detects: the present invention proposes the method to rfid interrogator breakdown of equipment monitoring and intervention path, without related content in contrast patent;
9, tag state monitoring: the present invention proposes the method to RFID label tag malfunction monitoring and intervention path, without related content in contrast patent;
10, Network Expert Systems: the present invention proposes the method to the network hardware equipment such as industrial computer, server Network Expert Systems and intervention path, and contrast in patent without related content.
As can be seen from above technical essential relatively, although the present invention is read and write the RFID label tag recording train information by RFID technique with contrast patent, thus train position is judged.But the present invention has obviously different from the technical scheme of contrast patent application, and has outstanding substantive distinguishing features.
Correlative indexing result 2:
Application number: 201120034541.8, title: a kind of high-precision train positioning system based on radio-frequency technique
This patent documentation provides a kind of high-precision train positioning system based on radio-frequency technique, comprising: some radio-frequency cards, at least one reader and process computer; Radio-frequency card arranges in orbit on fixture, for transmitting of responding that reader sends, returns reflected signal; Reader, is arranged on railcar, for the treatment of the reflected signal that radio-frequency card returns, obtains the card number of this radio-frequency card; Described radio-frequency card card number is sent to process computer; Process computer calls the radio-frequency card data bank identification locating information corresponding with this radio-frequency card card number.This train positioning system inherits the plurality of advantages of radio-frequency technique, overcomes the problem existing for prior art, can accurate actv. work in the environment of harshness.In addition, the utility model have also been devised the error correction scheme of this position fixing system, further increases the detection accuracy rate of this train positioning system, meets the requirements at the higher level that current orbit transport development proposes checking system.
This patent documentation solve mainly to the location in geographic position residing for vehicle, but can not Solving Station up-downgoing platform the problem such as train in/out station time, state location and putting maintenance into practice difficulty is larger.
Technical essential compares:
The present invention, compared with the content disclosed in this invention " a kind of high-precision train positioning system based on radio-frequency technique ", has following obvious difference:
1, RFID reader of the present invention is arranged on platform, and RFID label tag is installed ON TRAINS, and process computer is arranged on the machine room at station; The RFID reader of contrast patent is installed ON TRAINS, and RFID radio-frequency card is installed in orbit on fixture, and process computer is installed ON TRAINS;
2, object of the present invention mainly in locating lines all trains pass in and out the time of arbitrary station (uplink/downlink platform), be that the Real-time whole-body of vehicles in use all in circuit is held; And the object contrasting patent has advanced to particular location in circuit to locate a certain train, is the location to train position individual in circuit, station, OCC can not Real-time Obtaining train position information;
3, the equipment in the present invention mainly AT STATION, and train is only installed RFID label tag, and putting maintenance into practice is more prone to; And contrast patent and will each position in circuit be positioned, difficulty is very large, be mainly reflected in: need, on the other fixture of the track of circuit, label is installed, general several kilometers of block section between stations, tens trains can be parked simultaneously, in order to accurately locate train, need fixture in orbit installs a large amount of label, the replacing of simultaneous faults label is cumbersome.
Summary 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 and is applied to field of track traffic, based on RFID technique and the train locating method irrelevant with signal system.The method accurately can judge train status, the Obtaining Accurate neighboring station time, can information of vehicles in positioning area, detects, monitoring rfid interrogator, label, network failure state, and solves conllinear station, Y molded line bus station train orientation problem.
The technical problem to be solved in the present invention:
1) platform (island platform/side platform) position (upstream side/downlink side) residing for train in station is located;
2) train next stop time departure, our station time of advent, our station time departure, rear station time of advent is shown;
3) show that train in station enters the station, stops, sets off, jumps station, the dwell time crosses long status;
4) information of vehicles in circuit interval;
5) conllinear station train orientation problem is solved;
6) Y molded line road train orientation problem is solved;
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 provided by the invention, comprise the steps:
Step 1: the label information that rfid interrogator group is read is converted to label event, wherein, rfid interrogator group comprises 4 rfid interrogators of position end to end, rail traffic platform up-downgoing both sides, and rfid interrogator reads label information from being positioned at each train RFID label tag that two ends are installed end to end;
Step 2: event information is converted to train locating data.
Preferably, comprise the steps:
Whether monitoring reads label information, if do not read label information, then produces rfid interrogator and reads less than label event.
Preferably, label information comprises circuit number, car number, first and last bit flag.
Preferably, label event comprise following any one or appoint multiple event: 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.
Preferably, described step 2 comprise following any one or appoint multiple step:
-read certain train label when tailstock read write line, and up-downgoing platform all without this train time, train enters the station, and record train enters the station the time, and using the first and last zone bit in this label as train head zone bit;
When-train enters the station, according to the platform that train enters the station, find a pre-configured upper IP address, station, inquire about car body in a upper station number identical and to have set off but rear station time of advent is empty record, the time departure of vehicle at a upper station is recorded in our station as next stop time of departure of our station; The vehicle of our station is stood the time of advent after the vehicle at upper station and is recorded in a upper station time of advent; When our station time of advent of train early than upper station time departure time, the upper station time departure of our station does not show; When the upper station time of departure of train exceedes threshold value compared with our station time of advent, the upper station time departure of our station does not show;
-tailstock read write line reads train label, and this train is heteropleural platform when not leaving vehicle, does not process; Train is homonymy platform when not leaving vehicle, carries out homonymy platform vehicle condition adjudgement: tailstock read write line reads train tail tag label, and vehicle stops;
-headstock read write line reads train label, and train is heteropleural platform when not leaving vehicle, does not process; Train is homonymy platform when not leaving vehicle, carries out homonymy platform vehicle condition adjudgement: headstock read write line reads train leader label, and vehicle stops;
-headstock read write line reads train tail tag label, and vehicle sets off, the record train departures time;
-headstock read write line is read less than train label, and this train is heteropleural platform when not leaving vehicle, does not process; This train is homonymy platform when not leaving vehicle, carries out homonymy platform vehicle condition adjudgement: headstock read write line is read less than train tail tag label, and vehicle goes out clearly, and train removes from homonymy platform;
When-train is less than metro operation minimum dwell time from departures of entering the station, train display state is for jumping station, and namely train is not through stopping; Minimum dwell time parameter can according to the actual adjustment of subway station operation;
When-train is greater than metro operation maximum dwell time from departures of entering the station, train display state is that the dwell time is long, and namely train conductor's time is detained; Maximum dwell time parameter can according to the actual adjustment of subway station operation.
Preferably, also comprise the steps:
Setting rfid interrogator every N uploads heartbeat text second automatically, and when not receiving heartbeat text or the label data information of rfid interrogator active upload in N+M second, be fault by rfid interrogator status indication automatically, fault cause is for receiving data time-out; When the continuous K of a rfid interrogator train information does not detect, be fault by rfid interrogator status indication automatically, fault cause is not for receive information of vehicles; In the equipment real time fail table that rfid interrogator failure message is uploaded to OCC automatically and device history fault dictionary.
Preferably, also comprise the steps:
When rfid interrogator reads label information, when corresponding label mode bit is shown as active potential, automatically tag state is labeled as fault, fault cause is low spot position; When train is from departures of entering the station, when having a label four rfid interrogators all not read, automatically tag state is labeled as fault, fault cause is not for read; In the equipment real time fail table that label failure message is uploaded to OCC automatically and device history fault dictionary.
Compared with prior art, the present invention has following beneficial effect:
1, the present invention accurately can judge platform residing for train in station (island platform/side platform) position (upstream side/downlink side);
2, the present invention can show train next stop time departure, our station time of advent, our station time departure, rear station time of advent;
3, the present invention can judge that in station, train enters the station, stops, sets off, jumps station, the dwell time crosses long status;
4, the present invention can specify information of vehicles in circuit interval;
5, the present invention can solve conllinear station train orientation problem;
6, the present invention can solve Y molded line road train orientation problem;
7, the present invention can the current all vehicle in use information of circuit;
8, the present invention can accurately each station relevant device, label, network state information in detection line.
Accompanying drawing explanation
By reading the detailed description done non-limiting example with reference to the following drawings, other features, objects and advantages of the present invention will become more obvious:
Fig. 1 is Hardware Hierarchy figure.
Fig. 2 is station read write line distribution and name schematic diagram.
Fig. 3 is rfid interrogator read range schematic diagram.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in detail.Following examples will contribute to those skilled in the art and understand the present invention further, but not limit the present invention in any form.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, some distortion and improvement can also be made.These all belong to protection scope of the present invention.
The technology program that the present invention adopts is as follows:
1, RFID label tag is installed at each train head in circuit, tail two ends, records the car body number of this train and the first and last bit flag at mark vehicle two ends in label.Car body number is 5 regular lengths, and front two is circuit number (00-99), and latter two is car number (00-99), and last position is first and last bit flag (0 or 1).The circuit number of different rail transportation operation circuit can not be identical; In same rail transportation operation circuit, the car number of different vehicle can not be identical; The first and last bit flag of the same vehicle of same rail transportation operation circuit can not be identical.
2, the up-downgoing platform at each station respectively installs two rfid interrogators (totally four read write lines) end to end.Relative position when coming to a complete stop according to train is referred to as tailstock read write line, headstock read write line; Read write line should meet the following conditions: train in/out station speed is when below 80km/h, and each read write line in two read write lines of the headstock tailstock at least reads the headstock label of a train, the tailstock label of a train; On train direct of travel, rfid interrogator nearby should read train label early than rfid interrogator at a distance.
3, when the RFID label tag of train is within the scope of rfid interrogator, rfid interrogator repeatedly (1 ~ hundreds of time) can read RFID label tag, and it is converted into read write line and reads label event and read write line is read less than label event by this method.When read write line read same label exceed predetermined number of times time, produce read write line read label event; When read write line does not once read label within a period of time yet, producing read write line should less than label event.Read how many times label to produce and read label event and can be adjusted by configuration parameter; How long read to produce less than label to read also to be adjusted by configuration parameter less than event; With the difference that this is avoided different station to cause due to read write line equipment difference.
4, the sequencing reading vehicle train first and last position label by different platform read write line identifies the platform that enters the station residing for train automatically; Afterbody read write line reads vehicle label early than head read write line, then this vehicle direct of travel is identical with the direct of travel that read write line configures.
5, the sequencing reading vehicle train first and last position label by read write line identifies the platform that enters the station of train, time of entering the station, departures time be converted into train and enter the station, stop, set off, go out clearly, jump station, dwell time long various states automatically.
When tailstock read write line reads certain train label, and up-downgoing platform all without this train time, train enters the station, and using the first and last zone bit in this label as train head zone bit.For example: when upper end of line read write line reads certain train label, if this train is not the train that up-downgoing platform does not leave, so up this train of platform enters the station.
When tailstock read write line reads train label, this train is heteropleural platform when not leaving vehicle, does not process; This train is homonymy platform when not leaving vehicle, carries out homonymy platform vehicle condition adjudgement: tailstock read write line reads train tail tag label, and vehicle stops;
When headstock read write line reads train label, this train is heteropleural platform when not leaving vehicle, does not process; This train is homonymy platform when not leaving vehicle, carries out homonymy platform vehicle condition adjudgement: headstock read write line reads train leader label, and vehicle stops; Headstock read write line reads train tail tag label, and vehicle sets off, the record train departures time;
When headstock read write line is read less than train label, this train is heteropleural platform when not leaving vehicle, does not process; This train is homonymy platform when not leaving vehicle, carries out homonymy platform vehicle condition adjudgement: headstock read write line is read less than train tail tag label, and vehicle goes out clearly, and train removes from homonymy platform;
When train is less than metro operation minimum dwell time (40 seconds) from departures of entering the station, train display state is for jumping station, and namely train is not through stopping; Minimum dwell time parameter can according to the actual adjustment of subway station operation.
When train is greater than metro operation maximum dwell time (180 seconds) from departures of entering the station, train display state is that the dwell time is long, and namely train conductor's time is detained; Maximum dwell time parameter can adjust, as destination stop train length of the halt may more than 180 seconds according to subway station operation is actual.
6, rfid interrogator is equipped with at station, therefore accurately can judge train position; When train departures but before not arriving next station, train is positioned at interval.Every bar circuit, different car block section between stations length are all different, and train, from station, puts into next interval, when train gets to the station, delete this information of vehicles in a upper interval.When arrival vehicle is not the vehicle the earliest in a upper interval, hold display alarm until this warning is artificially confirmed or this train is detected at other stations at OCC.
7, for many circuit conllinear platforms (as No. 3,4, Shanghai line), do not need additionally to increase read write line equipment, different according to the label coding that read write line is read, confirm that current station arrives vehicle and belongs to which circuit, in the OCC display column truck position of corresponding line.
8, for Y molded line road (as No. 11, Shanghai line New City Jiading, No. 10 line Long Xilu), two platforms (side, island) are had in station: up direction two tracks, down direction track.Up direction for this platform is sent a car, according to train vehicle number information inquiry a upper station through information of vehicles, determine train on earth on which bar track.
9, the current all vehicle in use information of circuit;
Make the train diagram at circuit station in advance, for unique location information is determined in station, interval, when station detects that train enters the station, refresh the train display that interchange of position is corresponding; When train sets off, train display position is moved in the interval of our station and the next stop.Like this, by the renewal of each station to train position information, just can in the current all vehicle in use information of OCC circuit.
10, 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 fault and breakdown of equipment be detected.Read write line fault is divided into following two kinds: 30 seconds not receive equipment heartbeat text; Continuous 3 train informations of read write line do not detect (whether detecting that train information is as standard using other read write lines).When there is read write line fault, breakdown of equipment is initiatively charged to breakdown of equipment historical information to OCC synchronous apparatus state real time information by station.
Can show in real time on the tag state figure of OCC when label fault and label fault be detected.Label fault is divided into following two kinds: label active potential, label do not detect.When train enters the station, tailstock read write line successively reads headstock, tailstock label information, and when the information about power of label is shown as active potential, label fault is initiatively charged to label fault history information to OCC sync tag state real time information by station.When train is from departures of entering the station, when having a label four read write lines all not read, label fault is initiatively charged to label fault history information to OCC sync tag state real time information by station.
Can show on the device network real-time status figure of OCC when hardware device network failure and network failure be detected.
As follows the present invention is described in more detail.
Embodiment 1: as shown in Figure 1, respectively a rfid interrogator is installed end to end in rail traffic platform up-downgoing both sides, read write line access station controller main frame, station controller main frame is connected by independent network interface card with Che Kong room, station, checks our station train location real time information, historical information for car control room; Station controller main frame access rail line communication transfer net, is communicated with other stations, to obtain upper station time of departure and rear station time of advent of train; OCC(operatingcontrol center, the i.e. management mode at line one center) server access rail line communication transfer net, so that train location real time information, historical information, equipment, tag state information are uploaded in station.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 operating range, and when label enters read write line read-write scope, the label information read is uploaded to station controller by read write line, the inventive method receives the label information of read write line, it is converted into read write line and reads label event; And label event is read in monitoring, automatically produce read write line and read less than label event.
According to processing mode of the present invention, the whole flow process of train in/out station platform can be converted into 16 event informations, for the turnover of up form truck:
Before the up train enters the station, produce 2 event informations:
1) upper 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) upper 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) upper end of line read write line reads tailstock label information;
6) under, wardrobe read write line reads tailstock label information;
7) upper wardrobe read write line reads headstock label information;
8) under, end of line read write line reads headstock label information;
The up train comes to a complete stop leaving from station, produces 6 event informations;
9) upper 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) upper wardrobe read write line reads tailstock label information;
12) under, end of line read write line reads tailstock label information;
13) upper 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) upper 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 with it, is also generation 16 event informations.
Why do are 16 events instead of 8 events? namely one-sided platform vehicles while passing only has this side rfid interrogator to read vehicle label information.This is because, during vehicle pull-in, headstock tailstock when tailstock read write line or departures quickly (can reach 80km/h time maximum) through the speed of headstock read write line, rfid interrogator power will can read enough greatly the FRID label information of high-speed mobile, and rfid interrogator power also just means greatly the distance of reading; Because platform length is generally much larger 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, according to 16 event informations, is converted into the time of entering the station of the up-downgoing platform vehicle that rail vehicle control room monitor staff can identify, departures time and train and enters the station, stop, set off, go out clearly, jump station, dwell time long various states by the inventive method.
1) when tailstock read write line reads certain train label, and up-downgoing platform all without this train time, train enters the station, and record train enters the station the time, and using the first and last zone bit in this label as train head zone bit.
2) when train enters the station, according to the platform (up platform/descending platform) that train enters the station, find a pre-configured upper station (a upper station of our station up-downlink direction is different) IP address, inquire about car body in a upper station number identical and to have set off but rear station time of advent is empty record, the time departure of vehicle at a upper station is recorded in our station as next stop time of departure of our station; The vehicle of our station is stood the time of advent after the vehicle at upper station and is recorded in a upper station time of advent.When our station time of advent of train early than upper station time departure time, the upper station time departure of our station does not show; When upper station time of departure of train compared with our station time of advent more than 10 minutes time, the upper station time departure of our station does not show.
3) tailstock read write line reads train label, and this train is heteropleural platform when not leaving vehicle, does not process; Train is homonymy platform when not leaving vehicle, carries out homonymy platform vehicle condition adjudgement: tailstock read write line reads train tail tag label, and vehicle stops;
4) headstock read write line reads train label, and train is heteropleural platform when not leaving vehicle, does not process; Train is homonymy platform when not leaving vehicle, carries out homonymy platform vehicle condition adjudgement: headstock read write line reads train leader label, and vehicle stops;
5) headstock read write line reads train tail tag label, and vehicle sets off, the record train departures time;
6) headstock read write line is read less than train label, and this train is heteropleural platform when not leaving vehicle, does not process; This train is homonymy platform when not leaving vehicle, carries out homonymy platform vehicle condition adjudgement: headstock read write line is read less than train tail tag label, and vehicle goes out clearly, and train removes from homonymy platform;
7), when train is less than metro operation minimum dwell time (40 seconds) from departures of entering the station, train display state is for jumping station, and namely train is not through stopping; Minimum dwell time parameter can according to the actual adjustment of subway station operation.
8), when train is greater than metro operation maximum dwell time (180 seconds) from departures of entering the station, train display state is that the dwell time is long, and namely train conductor's time is detained; Maximum dwell time parameter can adjust, as destination stop train length of the halt may more than 180 seconds according to subway station operation is actual.
Embodiment 4: when OCC selects certain station, the inventive method the real-time train locating information in automatic acquisition station can be presented at OCC monitored picture.
Embodiment 5: can check the historical data that our station train is located AT STATION, also can inquire about according to circuit, station, platform, car body number, state, these conditional combinations of date the train position history data satisfied condition at OCC.The train locating information of station every day is transferred in historical data information table after stopping operation, is synchronized to the historical data information table of OCC simultaneously.Sequencing according to station offsets the synchronous working of carrying out OCC historical data according to the regular hour, to avoid, same time OCC offered load is excessive and synchrodata is too much.
Embodiment 6: the train information in station in circuit, interval can be checked at OCC.When train position judges to make a mistake, can at the monitoring interface display alarm of OCC.Implementation:
Whole stations and block information in pre-configured AT STATION circuit, as interval between adjacent two stations: XX-XX station of standing is interval; All stations and interval corresponding location information in the pre-configured circuit of OCC.When train enters the station, first in deletion circuit, in all positions, vehicle number is the information of Current vehicle; Then incoming train number is presented at the station correspondence position of corresponding up-downgoing platform; When vehicle is leaving from station, be the information deletion of Current vehicle by vehicle number in positions all in circuit, then find corresponding interval, train is number corresponding with corresponding interval location number; When next our station train leaves, equally train information is deleted from other position, move in interval; When entering the station in the vehicle arrival next stop, information of vehicles is deleted automatically from interval.When spreading train in deletion interval, if the train before this train does not also arrive, so this method thinks that train status is abnormal, makes a mark above, display alarm on the train diagram of OCC.
Embodiment 7: the inventive method can detect single rfid interrogator fault automatically, also can according to other read write line state comprehensive descision read write line faults, and in the equipment real time fail table automatically read write line failure message being uploaded to OCC and device history fault dictionary.Implementation: the inventive method can receive the heartbeat text that rfid interrogator transmits for every 10 seconds, when not receiving heartbeat text or the label data information of rfid interrogator active upload in 30 seconds, automatic is fault by read write line status indication, and fault cause is for receiving data time-out; When continuous 3 train informations of read write line do not detect (whether detecting that train information is as standard using other read write lines), be fault by read write line status indication automatically, fault cause is not for receive information of vehicles.In the equipment real time fail table that read write line failure message is uploaded to OCC automatically and device history fault dictionary.
Embodiment 8: the inventive method can detect single RFID label tag fault automatically, also can according to read write line state comprehensive descision label fault, and in the equipment real time fail table automatically label failure message being uploaded to OCC and device history fault dictionary.Implementation: when read write line reads label information, when corresponding label mode bit is shown as active potential, is labeled as fault by tag state automatically, and fault cause is low spot position; When train is from departures of entering the station, when having a label four read write lines all not read, automatically tag state is labeled as fault, fault cause is not for read.In the equipment real time fail table that label failure message is uploaded to OCC automatically and device history fault dictionary.
Embodiment 9: the inventive method can monitor the device network connection at each station at OCC, so that Timeliness coverage device network fault.Implementation: by snmp protocol inquiry station equipment state, when device status inquiries time-out display equipment network failure, corresponding device becomes redness.
Above specific embodiments of the invention are described.It is to be appreciated that the present invention is not limited to above-mentioned particular implementation, those skilled in the art can make various distortion or amendment within the scope of the claims, and this does not affect flesh and blood of the present invention.
Claims (7)
1., based on a rail transit train localization method of RFID, it is characterized in that, comprise the steps:
Step 1: the label information that rfid interrogator group is read is converted to label event, wherein, rfid interrogator group comprises 4 rfid interrogators of position end to end, rail traffic platform up-downgoing both sides, and rfid interrogator reads label information from being positioned at each train RFID label tag that two ends are installed end to end;
Step 2: event information is converted to train locating data.
2. the rail transit train localization method based on RFID according to claim 1, is characterized in that, comprise the steps:
Whether monitoring reads label information, if do not read label information, then produces rfid interrogator and reads less than label event.
3. the rail transit train localization method based on RFID according to claim 1, is characterized in that, label information comprises circuit number, car number, first and last bit flag.
4. the rail transit train localization method based on RFID according to claim 1, is characterized in that, label event comprise following any one or appoint multiple event: 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.
5. the rail transit train localization method based on RFID according to claim 4, is characterized in that, described step 2 comprise following any one or appoint multiple step:
-read certain train label when tailstock read write line, and up-downgoing platform all without this train time, train enters the station, and record train enters the station the time, and using the first and last zone bit in this label as train head zone bit;
When-train enters the station, according to the platform that train enters the station, find a pre-configured upper IP address, station, inquire about car body in a upper station number identical and to have set off but rear station time of advent is empty record, the time departure of vehicle at a upper station is recorded in our station as next stop time of departure of our station; The vehicle of our station is stood the time of advent after the vehicle at upper station and is recorded in a upper station time of advent; When our station time of advent of train early than upper station time departure time, the upper station time departure of our station does not show; When the upper station time of departure of train exceedes threshold value compared with our station time of advent, the upper station time departure of our station does not show;
-tailstock read write line reads train label, and this train is heteropleural platform when not leaving vehicle, does not process; Train is homonymy platform when not leaving vehicle, carries out homonymy platform vehicle condition adjudgement: tailstock read write line reads train tail tag label, and vehicle stops;
-headstock read write line reads train label, and train is heteropleural platform when not leaving vehicle, does not process; Train is homonymy platform when not leaving vehicle, carries out homonymy platform vehicle condition adjudgement: headstock read write line reads train leader label, and vehicle stops;
-headstock read write line reads train tail tag label, and vehicle sets off, the record train departures time;
-headstock read write line is read less than train label, and this train is heteropleural platform when not leaving vehicle, does not process; This train is homonymy platform when not leaving vehicle, carries out homonymy platform vehicle condition adjudgement: headstock read write line is read less than train tail tag label, and vehicle goes out clearly, and train removes from homonymy platform;
When-train is less than metro operation minimum dwell time from departures of entering the station, train display state is for jumping station, and namely train is not through stopping; Minimum dwell time parameter can according to the actual adjustment of subway station operation;
When-train is greater than metro operation maximum dwell time from departures of entering the station, train display state is that the dwell time is long, and namely train conductor's time is detained; Maximum dwell time parameter can according to the actual adjustment of subway station operation.
6. the rail transit train localization method based on RFID according to claim 1, is characterized in that, also comprise the steps:
Setting rfid interrogator every N uploads heartbeat text second automatically, and when not receiving heartbeat text or the label data information of rfid interrogator active upload in N+M second, be fault by rfid interrogator status indication automatically, fault cause is for receiving data time-out; When the continuous K of a rfid interrogator train information does not detect, be fault by rfid interrogator status indication automatically, fault cause is not for receive information of vehicles; In the equipment real time fail table that rfid interrogator failure message is uploaded to OCC automatically and device history fault dictionary.
7. the rail transit train localization method based on RFID according to claim 1, is characterized in that, also comprise the steps:
When rfid interrogator reads label information, when corresponding label mode bit is shown as active potential, automatically tag state is labeled as fault, fault cause is low spot position; When train is from departures of entering the station, when having a label four rfid interrogators all not read, automatically tag state is labeled as fault, fault cause is not for read; In the equipment real time fail table that label failure message is uploaded to OCC automatically and device history fault dictionary.
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