For the train real-time positioning system of Rail Transit SystemTechnical field
The utility model relates to a kind of train real-time positioning system, particularly relates to a kind of train real-time positioning system for Rail Transit System urban railway transit train being carried out to auxiliary positioning.
Background technology
Train location and note point are artificial to one of train method realizing basic fixed position.By positioning function and the daily record of note point, current train actual position on the line can be learnt, and through the time of our station compass of competency, namely from station, rear, arrive our station, time that our station, station, front arrive, thus clear and definite train is specifically at which station or interval at which.
Current Platform attendant adopts manual record mode, and registration our station train arrival is dispatched a car situation, and because urban railway transit train is intensive, the departure interval is little, Platform attendant manually remembers that labour intensity a little greatly, easily occurs human error.Platform attendant also has other comparatively multitasks, with OCC (management control center), face car control room of standing, train driver simultaneously in communication process, also to take the work of note point into account, may make mistakes in chaos and cause record error, and then lose the judgement to train position.And frequent, mechanical manual record takies the overstaffed work-hours in car control room, and (every day records 8-9 and opens paper, connect more than 400 phone), cause part Platform attendant to produce being weary of, irritated job morale, affect its mode of operation, the operation management at station is had a negative impact.
Also there is employing that RFID (RF identification) label is set ON TRAINS in prior art, the technology that the RFID signal sent by RFID label tag is positioned train, but the frequency of the RFID signal that RFID label tag sends is 2.4GHz (gigahertz (GHZ)), there is the shortcoming that penetrance is not strong, and then result through the particular location judging concrete train that RFID signal can not be stable, easily cause the string of train information between system to read.And traditional RFID signal receiver upon receipt of the signals, instability due to signal causes a lot of data message to be all fuzzy, just correct result can be drawn after must being calculated by software, but the accuracy of data has certain conflicting with real-time in the process, accuracy higher desired data amount is larger, thus causes real-time weak effect.
Utility model content
The technical problems to be solved in the utility model is to easily cause the string of train information between system to read when overcoming in prior art and adopt RFID signal to carry out train location, cause the defect that the accuracy of positioning result reduces, real-time is very poor, a kind of train real-time positioning system for Rail Transit System urban railway transit train being carried out to auxiliary positioning is provided.
The utility model solves above-mentioned technical matters by following technical proposals:
The utility model provides a kind of train real-time positioning system for Rail Transit System, and described Rail Transit System comprises some trains and some tracks, and its feature is, described train real-time positioning system comprises:
The real-time locating terminal of multiple train, with a fixed range for being arranged at intervals at by each track, is all integrated with a RFID signal receiver and for outwards sending the wireless exploration device of wireless exploration signal in real time in the real-time locating terminal of each train; Described wireless exploration device is infrared detector, laser detector or ultrasonic detector;
Multiple RFID label tag outwards sending RFID signal in real time, each train body is equipped with RFID label tag described at least one, and described RFID signal comprises the identifying information of described RFID label tag place train;
Described RFID label tag and described RFID signal receiver carry out wireless connections, and described RFID signal receiver and a home server carry out wired connection; Described wireless exploration device also carries out wireless connections with described home server.
Preferably, a RFID label tag is respectively equipped with in the headstock position of each train and tailstock position.
Preferably, described fixed range is arranged so that the identification signal that the RFID label tag simultaneously having two RFID signal receivers to receive a train head position and tailstock position respectively sends.
Preferably, described fixed range is: the length ± deviate of train; The span of described deviate is 0-6 rice.
Preferably, the span of described fixed range is 120-180 rice.
Preferably, described home server is connected by optical cable with each RFID signal receiver.
Preferably, described home server and each RFID signal receiver point to point connect.
Preferably, described home server also comprises one for showing the screen of the running orbit of each train in real time.
Preferably, described train real-time positioning system also comprises a central server be connected with described local server-side network.
Preferably, each RFID signal receiver includes one to receive the temporal information of identification signal built-in quartz clock for detecting described RFID signal receiver, and the percentage error of described built-in quartz clock is less than 0.5 second/day.
Preferably, described identification signal comprises the running number of train, car group number, label unique identifier, label electricity and tag state.
Positive progressive effect of the present utility model is: the utility model adopts infrared, laser or ultrasonic technology to locate in real time train, the auxiliary identifying information being read train by RFID technique, determine train body number, thus realize carrying out real-time and precise location to train, and positioning precision 0-5 rice be can being accurate to, the stability of the utility model when carrying out train location and real-time also ensure that well simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of the train real-time positioning system for Rail Transit System of the utility model one embodiment.
Fig. 2 is schematic diagram when train enters the station in the Rail Transit System of the utility model one embodiment.
Fig. 3 is the schematic diagram that in the Rail Transit System of the utility model one embodiment, train enters the station when coming to a complete stop.
Schematic diagram when Fig. 4 is launch train in the Rail Transit System of the utility model one embodiment.
Fig. 5 is schematic diagram when train is leaving from station in the Rail Transit System of the utility model one embodiment.
Detailed description of the invention
Mode below by embodiment further illustrates the utility model, but is not therefore limited among described scope of embodiments by the utility model.
Train real-time positioning system of the present utility model is mainly used in carrying out auxiliary positioning to train in City Rail Transit System, wherein Rail Transit System includes some trains and some tracks, each track is provided with multiple website on the way, as shown in Figure 1, described train positioning system comprises the real-time locating terminal 1 of multiple train, multiple RFID label tag 2 and a home server 3, the real-time locating terminal of described multiple train 1 with a fixed range for being arranged at intervals at by each track, the real-time locating terminal 1 of each train includes RFID signal receiver 11 and a wireless exploration device 12, described wireless exploration device 12 is for outwards sending a wireless exploration signal in real time, utilize described wireless exploration signal can detect the position of train.In the present embodiment, described wireless exploration device 12 can be infrared detector, laser detector or ultrasonic detector.
In the present embodiment, a RFID label tag 2 is respectively equipped with in the headstock position of each train and tailstock position, outwards identification signal can be sent in real time in the process that described RFID label tag 2 is advanced at train, described identification signal comprises the identifying information of described RFID label tag 2 place train, specifically comprises the information such as the running number of train, car group number, label unique identifier, label electricity and tag state.
When train is through the real-time locating terminal 1 of described train, described RFID signal receiver 11 can receive the identification signal that described RFID label tag 2 sends, and the described identification signal received is sent to described home server 3; Simultaneously, the wireless exploration signal that described wireless exploration device 12 is launched can reflect after the described train of arrival, the wireless exploration signal of reflection can be received by described wireless exploration device 12, and the wireless exploration signal of the reflection received can be sent to described home server 3 by described wireless exploration device 12.
Described home server 3 identifies each train according to described identification signal, and the wireless exploration calculated signals of position residing for each RFID signal receiver and reflection goes out location information and the running state information of each train.
In the present embodiment, the identification signal that being arranged so that of fixed range between the real-time locating terminal of described multiple train 1 simultaneously have two RFID signal receivers 11 to receive respectively RFID label tag 2 that the headstock position of same row train and tailstock position arrange sends, to achieve these goals, described fixed range is set to the length ± deviate of train in the present embodiment, the span of described deviate is 0-6 rice, based on the normal length of train, the span of described fixed range specifically can be set to 120-180 rice.
Described home server 3 can carry out point to point connect by optical cable and each RFID signal receiver 11 in specific implementation process, described home server 3 also comprises a screen, for showing the location information of each train in real time and showing the running orbit of each train according to location information.Described train real-time positioning system also comprises a central server be connected with described home server, described central server for the location information of each train of preserving described home server 3 and calculating and running state information, described home server 3 also according to the positional information calculation of the train preserved in described central server train arrive the time of front website.
Each RFID signal receiver 11 includes one to receive the temporal information of identification signal built-in quartz clock for detecting described RFID signal receiver 11, and the percentage error of described built-in quartz clock is less than 0.5 second/day; Each RFID signal receiver 11 also sends described temporal information to described home server, and described home server 3 goes back the time of the built-in quartz clock of correction of timing RFID signal receiver 11.
The train positioning system for Rail Transit System the following detailed description of the present embodiment carries out the process that detects and principle for the different running statees of train.
When train enters the station, as shown in Figure 2, the vahicles label being arranged in train head position enters into the identification range of the RFID signal receiver of the real-time locating terminal of train of the platform tailstock, described RFID signal receiver can receive the identification signal that vahicles label sends, identification signal can be sent to home server, by the car body information of home server identification train after the RFID signal receiver being positioned at the platform tailstock receives identification signal.Simultaneously, the wireless exploration signal that the wireless exploration device being arranged in the real-time locating terminal of train of the platform tailstock is launched can arrive train and reflect, namely described wireless exploration device can receive the wireless exploration signal of reflection, and send it to home server, home server can calculate the location information of train, and judges that the running state of train is for entering the station based on the wireless exploration signal of platform tailstock reception identification signal and reflection.
After train comes to a complete stop, as shown in Figure 3, the vahicles label being arranged in train head position enters into the identification range of the RFID signal receiver of the real-time locating terminal of train of platform headstock, the RFID signal receiver being positioned at platform headstock can receive the identification signal of the vahicles label transmission being positioned at train head position, and the identification signal received is sent to home server, equally, the wireless exploration device being arranged in the real-time locating terminal of train of platform headstock can receive the wireless exploration signal of reflection, and sends it to home server.The vahicles label being simultaneously arranged in train tailstock position enters into the identification range of the RFID signal receiver of the real-time locating terminal of train of the platform tailstock, the RFID signal receiver being positioned at the platform tailstock can receive the identification signal of the vahicles label transmission being positioned at train tailstock position, and the identification signal received is sent to home server, equally, the wireless exploration device being arranged in the real-time locating terminal of train of the platform tailstock can receive the wireless exploration signal of reflection, and sends it to home server.Home server can go out the location information of train based on above-mentioned calculated signals, and judges that the running state of train is for entering the station and coming to a complete stop.
When launch train, as shown in Figure 4, the vahicles label being arranged in train head position and tailstock position takes leave of out the identification range of the RFID signal receiver of the headstock of platform and the real-time locating terminal of train of the tailstock together with the time-division, the wireless exploration device being arranged in the real-time locating terminal of train of the platform tailstock does not now just receive the wireless exploration signal of reflection, namely train cannot be detected, the wireless exploration device being arranged in the real-time locating terminal of train of platform headstock then can continuous reception to the wireless exploration signal of reflection, namely train is detected constantly, RFID signal receiver now in the real-time locating terminal of the train of platform headstock and the tailstock and wireless exploration device can by above-mentioned information transmission to home servers, home server just can judge that the running state of train is for starting.
When train is leaving from station, as shown in Figure 5, the RFID signal receiver being arranged in the real-time locating terminal of train of platform headstock and the tailstock all cannot receive the identification signal of vahicles label transmission, the wireless exploration device being simultaneously arranged in the real-time locating terminal of train of platform headstock and the tailstock does not receive the wireless exploration signal of reflection yet, namely train cannot be detected, RFID signal receiver now in the real-time locating terminal of the train of platform headstock and the tailstock and wireless exploration device can by above-mentioned information transmission to home servers, home server just can judge that the running state of train is leaving from station thus.
Certainly, in whole process, home server can show the position of train and different running statees in real time by screen, and above-mentioned information can also be sent to central server and store by home server.
Although the foregoing describe detailed description of the invention of the present utility model, it will be understood by those of skill in the art that these are only casehistorys, protection domain of the present utility model is defined by the appended claims.Those skilled in the art, under the prerequisite not deviating from principle of the present utility model and essence, can make various changes or modifications to these embodiments, but these change and amendment all falls into protection domain of the present utility model.