CN102358333A - Wireless signal system for preventing rapid trains from tailgating - Google Patents
Wireless signal system for preventing rapid trains from tailgating Download PDFInfo
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- CN102358333A CN102358333A CN2011102341740A CN201110234174A CN102358333A CN 102358333 A CN102358333 A CN 102358333A CN 2011102341740 A CN2011102341740 A CN 2011102341740A CN 201110234174 A CN201110234174 A CN 201110234174A CN 102358333 A CN102358333 A CN 102358333A
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Abstract
The invention discloses a wireless signal system for preventing rapid trains from tailgating. A vehicle-mounted subsystem of the wireless signal system is internally provided with two train signal wireless transceiving devices, namely a maneuvering desk wireless transceiver and a tailstock wireless transceiver; the tailstock wireless transceiver is used for sending local train encrypted response information and local train basic marker data to a rearward train in real time; and the maneuvering desk wireless transceiver is used for detecting and receiving the encrypted response information sent out by the tailstock wireless transceiver of a forward train of a same direction and a same station track in real time, performing interactive recognition on the received encrypted response information and the local train encrypted response information, sending out the local train encrypted response information to the forward train, sending signals on the received encrypted response information to a local train control computer used for sending out an instruction on deceleration or braking, and receiving the basic marker data emitted by the tailstock wireless transceiver of the forward train, and the local train control computer is used for processing GPS (Global Position System) positioning information differential value of synchronous time-markers of two trains and calculating a distance between the forward train and the rearward train, so that the speed of the local train is controlled.
Description
Technical field
The present invention relates to wireless communication field, be specifically related to a kind of high speed train anti-knock into the back wireless signal system and train signal wireless transmitter thereof.
Background technology
The specification of China's high ferro train operation control system (being called for short CTCS) is with reference to European train operation control system (being called for short ETCS) establishment.CTCS train operation control system two sub-systems, i.e. onboard subsystem and ground subsystem.Shown in accompanying drawing 1.
Ground subsystem is mainly by forming with the lower part: responser, track circuit, cordless communication network (GSM-R), train scheduling central system (CTC)/radio block center (RBC).Wherein GSM-R does not belong to CTCS equipment, but important component part.
Responser is a kind of transmission equipment that can send message information to onboard subsystem, both can transmit fix information, also can connect the other unit of rail and transmit variable information.
Track circuit have the block section track gone train occupation inspection, transmit the train information function continuously along track, employing be frequency shift modulated track circuit.The normal working of track circuit is related to the safety of train operation, stops the same direction of block section, same station track train to get into, and prevents the generation of rear-end collision.
Cordless communication network (GSM-R) is to be used for the land mobile communication system that onboard subsystem and train controlling center are carried out bidirectional transfer of information.Train controlling center is based on the control system of fail-safe computer; Its stronghold face system or from the information of plane system externally; Produce the train travel grant commands like orbit occupancy information, Interlock Status etc.; And be transferred to onboard subsystem through the car ground information transmission system (wireless and wired information link), guarantee the safe in operation of train in the train controlling center administration.
Onboard subsystem can be by forming with the lower part: row control computer system, man-machine interface system, track circuit, answering system, the ranging system that tests the speed, register system, brake interface system, and GSM-R wireless answering equipment.Onboard subsystem can be referred to as: the CTCS mobile unit, the CTCS mobile unit is based on the control system of row control computer, comes the dispatcher's control train operation through track circuit, answering system, GSM-R wireless answering equipment and ground subsystem exchange message.
Because ground subsystem in the CTCS train operation control system; GSM-R wireless communication system and track circuit are in bad weather condition (as: thunder and lightning) and geologic hazard (as: earthquake); More or less freely being damaged; Make the GSM-R wireless communication system communication failure temporarily occur; And track circuit can't correctly transmit signal information, makes the following train control information that can't obtain to drive a vehicle get into the place ahead block section, and block section can occur has same direction, same station track to move the grave accident that two row trains knock into the back.
Summary of the invention
The objective of the invention is to propose the anti-wireless signal system that knocks into the back of a kind of high speed train; In order to improve the reliability of CTCS train operation control system; Ground subsystem in the CTCS train operation control system; GSM-R wireless communication system and track circuit are damaged in bad weather condition (as: thunder and lightning) and geologic hazard (as: earthquake) simultaneously; Make the GSM-R wireless communication system communication failure temporarily occur, and track circuit can't correctly transmit under the signal information status the independently anti-quick emergency handling of rear-end collision of raising train.
The present invention is at Chinese invention patent " vehicle GPS positioning distance measuring and vehicle electronic license tag information terminal "; The patent No.: 200810023205.6 with " wireless telecommunications vehicle electronic license tag and distance survey system "; On the basis of the patent No.: 201010521078.X, the anti-wireless signal system that knocks into the back of a kind of high speed train is proposed specifically.
The anti-wireless signal system that knocks into the back of high speed train comprises by row control computer system, man-machine interface system, track circuit, answering system, the ranging system that tests the speed, register system, brake interface system, and the onboard subsystem of GSM-R wireless answering equipment composition; Also be provided with these two train signal wireless transmitters of operator platform wireless transceiver and tailstock wireless transceiver in the said onboard subsystem; The operator platform wireless transceiver is installed in the train driving chamber; Tailstock wireless transceiver is installed in last vehicle of train observation ward, and the operator platform wireless transceiver links to each other with the row control computer through communication bus respectively with tailstock wireless transceiver;
Said operator platform wireless transceiver and train tailstock wireless transceiver are gathered synchronous UTC time, latitude, longitude and ground rate information in the global position system GPS simultaneously; Carry out data quick-processing again; Obtain the basic unlabeled data of this train; Basic unlabeled data comprises GPS locating information, train information and satellite synchronous time mark information; The GPS locating information comprises the geographic position data of real-time train head and the accurate synchronous time mark of train tail, and train information comprises train number, train speed, train braking stop conditions and signal information data;
Said tailstock wireless transceiver also is used for the encrypted response information that real-time train rearward sends this train in real time; When receiving that the rear train returns and during encrypted response information that this car key is complementary, the basic unlabeled data of this train of train radio emission rearward in real time;
Said operator platform wireless transceiver also is used for: real-time detection receives the encrypted response information that same direction, the place ahead, same station track train tailstock wireless transceiver are sent; The encrypted response information of receiving and this car encrypted response information are carried out interactive identification; Conform to like both keys; Then forwards train sends this car encrypted response information, and the signal that will receive encrypted response information simultaneously is sent to this car team control computer, and this car team control computer sends the instruction of this train deceleration or braking; Receive the basic unlabeled data of the place ahead train tailstock wireless transceiver emission; The basic unlabeled data that receives is sent to this car team control computer; This car team control computer is handled the GPS locating information difference of synchronous time mark between two trains; Calculate distance between two trains of front and back, control the speed of this train.
The operator platform wireless transceiver is identical with tailstock wireless transceiver configuration among the present invention, exchanges because the operator's compartment of train and last vehicle of train observation ward can carry out function according to up-downgoing.
Said encrypted response information is meant the signcode data of destination and originator train; The key that wireless transceiver is received and dispatched according to both sides whether discern by identical standard; When the destination uses identical key with originator; Be that encryption key is identical or of equal value with decruption key, could carry out radio communication each other.
As further improvement of the present invention; The train signal wireless transmitter is by TMS320 series DSP DSP chip (or ARM series microprocessor), satellite GPS circuit, wireless transceiver circuit, crystal oscillating circuit, audible alarm circuit, train driving data logging memory device, screen display, keyboard, isolated communication bus circuit, time circuit, temperature sensor circuit, battery detecting, and peripheral rechargeable battery energy storage mu balanced circuit, directional antenna are formed.
As further improvement of the present invention, when up and descending, the transmitting frequency of said train signal wireless transmitter is inequality at train, cooresponding uplink communication frequency f 1 when train is up, corresponding downlink communication frequency f 2 when train is descending.
As further improvement of the present invention, in the anti-wireless signal system that knocks into the back of high speed train, also be included in the wireless communication repeater that install at tunnel internal and import and export place, prevent that the tunnel from influencing radio communication.
Among the present invention, the train signal wireless transmitter is installed in train driving chamber and tailstock observation ward, and links to each other with the row control computer through communication bus; Train is in high speed railway one-way traffic process; The train signal wireless transmitter of train driving chamber and tailstock observation ward is gathered synchronous UTC time, latitude, longitude and ground rate information in the global position system GPS simultaneously, carries out data quick-processing again; Obtain the basic unlabeled data of this train; Basic unlabeled data comprises gps satellite synchronous time mark information, the geographic position data of the accurate synchronous time mark of car head and tail, train speed data, and train number, signal information data, when going train before and after in block section, occurring; Carry out two row point-to-train communication data exchanges, the decision-making following train slows down and forced brake.
It is that the place ahead train tailstock wireless transceiver is gathered synchronous UTC time, RMC latitude, longitude and VTG ground rate information in the global position system GPS in real time that high speed railway according to the invention goes in the same direction of block section, same station track two row train distance detection methods; The line data of going forward side by side is handled; Obtain geographic position data, the train speed data of this accurate synchronous time mark in last vehicle of train space; And train number, signal information data; With the basic unlabeled data of these data as this car; And after carrying out interactive identification through radio communication encrypted response information and following train operator platform wireless transceiver, the basic unlabeled data of this train is transferred to following train operator platform wireless transceiver; And following train operator platform wireless transceiver in like manner the basic unlabeled data of this train of synchronous acquisition carry out the synchronous time mark difference with the basic unlabeled data that receives the place ahead train and handle with doppler data, obtain real-time distance between two last vehicle of train and the head.
The present invention increases the train signal wireless transmitter in onboard subsystem; The train signal wireless transmitter that the last vehicle of train observation ward of going in the place ahead installs; Per 2 seconds this train of wireless transmission encrypted response information rearward in real time at interval; After receiving the replying of rear train; The per 2 seconds real-time at interval basic unlabeled datas of this train of wireless transmission rearward supply following train to be expert at and drive into into (wireless communication distance is greater than 3.8Km) in the last vehicle of train radio communication active distance of the place ahead, the train signal wireless transmitter of the rear following train operator's compartment ability quick detection wireless signal that train sends to the place ahead; And accept the processing signals parameter fast, be sent to row control computer automatic decision car retardation and braking, prevent that the knock into the back accident of the place ahead train of rear following train from taking place.
Description of drawings
Fig. 1 is an existing C TCS train operation control system constructional drawing;
Fig. 2 is a CTCS train operation control system constructional drawing of the present invention;
Fig. 3 is the anti-operation logic figure of wireless signal system that knocks into the back of high speed train of the present invention;
Fig. 4 is the anti-wireless signal tunnel repeater scheme drawing that knocks into the back of high speed train of the present invention;
Fig. 5 is train signal wireless transmitter schematic circuit diagram of the present invention.
The specific embodiment
Further specify below in conjunction with accompanying drawing and embodiment.
Embodiment 1
With reference to Fig. 2; The anti-wireless signal system that knocks into the back of high speed train; Comprise by row control computer system, man-machine interface system, track circuit, answering system, the ranging system that tests the speed, register system, brake interface system; And the onboard subsystem of GSM-R wireless answering equipment composition, also being provided with two train signal wireless transmitters of operator platform wireless transceiver and tailstock wireless transceiver in the said onboard subsystem, the operator platform wireless transceiver is installed in the train driving chamber; Tailstock wireless transceiver is installed in last vehicle of train observation ward, and the operator platform wireless transceiver links to each other with the row control computer through communication bus respectively with tailstock wireless transceiver.
With reference to Fig. 3; Operator platform wireless transceiver and train tailstock wireless transceiver are gathered synchronous UTC time, latitude, longitude, ground rate information in the global position system GPS simultaneously; Carry out data quick-processing again; Obtain the basic unlabeled data of this train, basic unlabeled data comprises geographic position data, the train speed data of gps satellite synchronous time mark, real-time train head and the accurate synchronous time mark of train tail, and train number and signal information data.
The operator platform wireless transceiver is in the reception acquisition mode all the time; The train signal wireless transmitter is referred to as tailstock wireless transceiver when being installed in last vehicle of train observation ward, tailstock wireless transceiver mode of operation is per 2 seconds at interval this train of wireless transmission encrypted response information rearward in real time.Communication distance (satisfies high speed train at 300 kilometers/hour moving velocitys greater than 3.8Km between following train operator platform wireless transceiver and the place ahead train tailstock wireless transceiver; Emergency stopping distance needs 3.8Km; Stopping of train ability safety), that is to say that following train operator platform wireless transceiver is in the very first time; At first receive the train radio encrypted response information that the place ahead train tailstock wireless transceiver sent in per 2 seconds at interval continuously; Explanation is having train to exist greater than the same direction in 3.8Km place, same station track block section, following train operator platform wireless transceiver is notified this car team control computer at once, and the row control computer is taked urgent the deceleration or braking.Operator platform wireless transceiver forwards this car of tailstock wireless transceiver transmission of train is replied enciphered message; After front truck tailstock wireless transceiver is replied enciphered message identification to the back car of receiving; Rearward sent in real time the basic unlabeled data of the place ahead train in per 2 seconds at interval; Rear operator platform wireless transceiver receives the basic unlabeled data of train that front truck tailstock wireless transceiver sends, and transfers to back car team control computer, and back car team control computer is handled the basic unlabeled data of receiving of front truck in real time; Judge distance between two trains, the speed of control back car.
Following train operator platform wireless transceiver; The basic unlabeled data of the wireless encryption response message that real-time detection the place ahead block section train tailstock sends and reception the place ahead train; The GPS locating information difference of synchronous time mark between decision-making train deceleration and braking and fast processing two trains; Calculate two train distances, and carry out alternately with preceding train information; The anti-wireless signal system that knocks into the back of high speed train is shown in accompanying drawing 3.
In the anti-wireless signal system that knocks into the back of high speed train, when track passes through the tunnel, and import and export wireless communication repeater is installed, prevent that the tunnel from influencing radio communication, shown in accompanying drawing 4 at tunnel internal.
With reference to accompanying drawing 5; The train signal wireless transmitter is by TMS320 series DSP DSP chip (or ARM series microprocessor), satellite GPS circuit, wireless transceiver circuit, crystal oscillating circuit, audible alarm circuit, train driving data logging memory device, screen display, keyboard, isolated communication bus circuit, time circuit, temperature sensor circuit, battery detecting, and peripheral rechargeable battery energy storage mu balanced circuit, directional antenna are formed.
GPS circuit in the train signal wireless transmitter can adopt the receiving circuit module or the GPS of America satellite receiving circuit module that receive China's Big Dipper gps satellite; Present embodiment adopts the CC100 circuit card that receives China's Big Dipper gps satellite, and communication interface RS-232 circuit and synchronous time service 1PP interface are connected the serial ports and the I/O mouth of DSP digital signal processor.
Wireless transceiver circuit in the train signal wireless transmitter can select suitable frequency to carry out two-channel wireless communication according to Ministry of Railways's wireless communication frequency resource; Present embodiment adopts the very strong 2.4GHz two-channel wireless mechanics of communication of disturbance rejection, and frequency of operation is 2400MHz-2483 MHz; Select two working channel f1, f2; Channel spacing is greater than 10M, and up train radio communication is f1, and the down train radio communication is f2; The train signal wireless transmitter can be through keyboard operation or row control computer control automatically switching channel, and the working channel of corresponding up-downgoing defined carries out radio communication; Comprise in the wireless transceiver circuit: RF circuit, power amplifier PA and the transmit-receive switch circuit of band microprocessor CPU, antenna adopts the compact directional antenna; Wireless receiving and dispatching electricity receiving sensitivity is less than-90dBm, and emissive power is greater than 36dB.
Rechargeable battery energy storage mu balanced circuit in the train signal wireless transmitter adopts chargeable 12.8V lithium Fe battery as power supply, and through mu balanced circuit output 5V, 3.3V, 1.8V circuit power; Charging can adopt the alternating current 220V (or on the train standard low-voltage power supply) of online mode to carry out transformer isolation transformation, rectification, voltage stabilizing, charges to lithium Fe battery.
Claims (5)
1. high speed train prevents knocking into the back the wireless signal system; Comprise by row control computer system, man-machine interface system, track circuit, answering system, the ranging system that tests the speed, register system, brake interface system, and the onboard subsystem of GSM-R wireless answering equipment composition; It is characterized in that; Also be provided with these two train signal wireless transmitters of operator platform wireless transceiver and tailstock wireless transceiver in the said onboard subsystem; The operator platform wireless transceiver is installed in the train driving chamber; Tailstock wireless transceiver is installed in last vehicle of train observation ward, and the operator platform wireless transceiver links to each other with the row control computer through communication bus respectively with tailstock wireless transceiver;
Said operator platform wireless transceiver and train tailstock wireless transceiver are gathered synchronous UTC time, latitude, longitude and ground rate information in the global position system GPS simultaneously; Carry out data quick-processing again; Obtain the basic unlabeled data of this train; Basic unlabeled data comprises GPS locating information, train information and satellite synchronous time mark information; The GPS locating information comprises the geographic position data of real-time train head and the accurate synchronous time mark of train tail, and train information comprises train number, train speed, train braking stop conditions and signal information data;
Said tailstock wireless transceiver also is used for the encrypted response information that real-time train rearward sends this train in real time; When receiving that the rear train returns and during encrypted response information that this car key is complementary, the basic unlabeled data of this train of train radio emission rearward in real time;
Said operator platform wireless transceiver also is used for: real-time detection receives the encrypted response information that same direction, the place ahead, same station track train tailstock wireless transceiver are sent; The encrypted response information of receiving and this car encrypted response information are carried out interactive identification; Conform to like both keys; Then forwards train sends this car encrypted response information, and the signal that will receive encrypted response information simultaneously is sent to this car team control computer, and this car team control computer sends the instruction of this train deceleration or braking; Receive the basic unlabeled data of the place ahead train tailstock wireless transceiver emission; The basic unlabeled data that receives is sent to this car team control computer; This car team control computer is handled the GPS locating information difference of synchronous time mark between two trains; Calculate distance between two trains of front and back, control the speed of this train.
2. according to the anti-wireless signal system that knocks into the back of the described high speed train of claim 1; It is characterized in that: the train signal wireless transmitter is by TMS320 series DSP DSP chip, satellite GPS circuit, wireless transceiver circuit, crystal oscillating circuit, audible alarm circuit, train driving data logging memory device, screen display, keyboard, isolated communication bus circuit, time circuit, temperature sensor circuit, battery detecting, and peripheral rechargeable battery energy storage mu balanced circuit, directional antenna are formed.
3. according to the anti-wireless signal system that knocks into the back of the described high speed train of claim 1; It is characterized in that:, the train signal wireless transmitter is selected two working channel f1, f2, and channel spacing is greater than 10M; Up train wireless communication channel is f1; The down train wireless communication channel is f2, and the train signal wireless transmitter can be through keyboard operation or row control computer control automatically switching channel, and the working channel of corresponding up-downgoing defined carries out radio communication.
4. according to the anti-wireless signal system that knocks into the back of the described high speed train of claim 1, it is characterized in that: also be included in the wireless communication repeater that install at tunnel internal and import and export place in the anti-wireless signal system that knocks into the back of said high speed train.
5. according to the anti-wireless signal system that knocks into the back of the described high speed train of claim 1; It is characterized in that: said train signal wireless transmitter is by ARM series processors chip, satellite GPS circuit, wireless transceiver circuit, crystal oscillating circuit, audible alarm circuit, train driving data logging memory device, screen display, keyboard, isolated communication bus circuit, time circuit, temperature sensor circuit, battery detecting, and peripheral rechargeable battery energy storage mu balanced circuit and directional antenna are formed.
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