CN102358333B - Wireless signal system for preventing rapid trains from rear-end collision - Google Patents
Wireless signal system for preventing rapid trains from rear-end collision Download PDFInfo
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- CN102358333B CN102358333B CN2011102341740A CN201110234174A CN102358333B CN 102358333 B CN102358333 B CN 102358333B CN 2011102341740 A CN2011102341740 A CN 2011102341740A CN 201110234174 A CN201110234174 A CN 201110234174A CN 102358333 B CN102358333 B CN 102358333B
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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 Wireless signal system for preventing rapid trains from tailgating 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 mainly is comprised of following 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 to onboard subsystem message information, both can transmit fix information, but also the other unit of connecting rail transmits variable information.
Track circuit has the block section track and is traveling the train occupation inspection, transmits continuously the train information function 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 enter, and prevents the generation of rear-end collision.
Cordless communication network (GSM-R) is the land mobile communication system that carries out bidirectional transfer of information for onboard subsystem and train controlling center.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 such as orbit occupancy information, Interlock Status etc., and be transferred to onboard subsystem by 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 comprised of following 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 by 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), be damaged comparatively easily, make the GSM-R wireless communication system communication failure temporarily occur, and track circuit can't correctly transmit signal information, make the following train control information that can't obtain to drive a vehicle enter the place ahead block section, 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 object of the invention is to propose a kind of Wireless signal system for preventing rapid trains from tailgating, 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 simultaneously in bad weather condition (as: thunder and lightning) and geologic hazard (as: earthquake), make the GSM-R wireless communication system communication failure temporarily occur, and track circuit can't correctly transmit under the signal information status, improves the independently anti-quick emergency handling of rear-end collision of 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 and " wireless telecommunications vehicle electronic license tag and distance survey system ", on the basis of the patent No.: 201010521078.X, a kind of Wireless signal system for preventing rapid trains from tailgating is proposed specifically.
Wireless signal system for preventing rapid trains from tailgating 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 described 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 by communication bus respectively with tailstock wireless transceiver;
Described operator platform wireless transceiver and train tailstock wireless transceiver gather synchronous UTC time, latitude, longitude and ground rate information in the global position system GPS simultaneously, carry out again data quick-processing, obtain the basic unlabeled data of this train, basic unlabeled data comprises GPS locating information, train information and satellite synchronization time scale information, target geographic position data when the GPS locating information comprises real-time train head and train tail accurate synchronization, train information comprises train number, train speed, train braking stop conditions and signal information data;
Described tailstock wireless transceiver also is used for the encrypted response information that real-time rearward train sends this train in real time, when receiving that the rear train returns and during encrypted response information that this car key is complementary, rearward train radio is launched the basic unlabeled data of this train in real time;
Described 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, encrypted response information and this car encrypted response information received are carried out interactive identification, conform to such as both keys, then forwards train sends this car encrypted response information, the signal that will receive simultaneously encrypted response information 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 processed 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.
Described encrypted response information refers to the signcode data of destination and originator train, the key that wireless transceiver is received and dispatched according to both sides whether identify 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 mutually carry out radio communication.
As a further improvement on 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 voltage stabilizing circuit, directional antenna form.
As a further improvement on the present invention, when up and descending, the transmitting frequency of described train signal wireless transmitter is not identical at train, corresponding uplink communication frequency f 1 when train is up, corresponding downlink communication frequency f 2 when train is descending.
As a further improvement on the present invention, in the Wireless signal system for preventing rapid trains from tailgating, also be included in the wireless communication repeater that install at tunnel internal and import and export place, prevent that the tunnel from affecting 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 by 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, gather simultaneously the synchronous UTC time in the global position system GPS, latitude, longitude and ground rate information, carry out again data quick-processing, obtain the basic unlabeled data of this train, basic unlabeled data comprises gps satellite synchronous time mark information, target geographic position data during car head and tail accurate synchronization, the train speed data, and train number, the signal information data, when travelling 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.
High speed railway of the present invention travels in the same direction of block section, the method of inspection of same station track two row train distances is the synchronous UTC time in the train tailstock wireless transceiver Real-time Collection global position system GPS of the place ahead, the RMC latitude, longitude and VTG ground rate information, and carry out data and process, target geographic position data when obtaining this last vehicle of train space accurate synchronization, the train speed data, and train number, the signal information data, with the basic unlabeled data of these data as this car, and after carrying out interactive identification by 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 process 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 travelling in the place ahead installs, per 2 seconds intervals are this train of wireless transmission encrypted response information rearward in real time, after receiving the replying of rear train, the per 2 seconds real-time rearward basic unlabeled datas of this train of wireless transmission in interval, 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 wireless signal that the train signal wireless transmitter energy quick detection of rear following train operator's compartment is sent to the place ahead train, and accept fast the processing signals parameter, 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 occuring.
Description of drawings
Fig. 1 is existing CTCS train operation control system constructional drawing;
Fig. 2 is CTCS train operation control system constructional drawing of the present invention;
Fig. 3 is Wireless signal system for preventing rapid trains from tailgating operation logic figure of the present invention;
Fig. 4 is capable of preventing rear-end collision of high-speed trains wireless signal of the present invention tunnel repeater scheme drawing;
Fig. 5 is train signal wireless transmitter schematic circuit diagram of the present invention.
The specific embodiment
Be described further below in conjunction with drawings and Examples.
Embodiment 1
With reference to Fig. 2, Wireless signal system for preventing rapid trains from tailgating, comprise by the row control computer system, man-machine interface system, track circuit, answering system, ranging system tests the speed, register system, the brake interface system, and the onboard subsystem of GSM-R wireless answering equipment composition, also be provided with two train signal wireless transmitters of operator platform wireless transceiver and tailstock wireless transceiver in the described 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 by communication bus respectively with tailstock wireless transceiver.
With reference to Fig. 3, operator platform wireless transceiver and train tailstock wireless transceiver gather synchronous UTC time, latitude, longitude, ground rate information in the global position system GPS simultaneously, carry out again data quick-processing, obtain the basic unlabeled data of this train, target geographic position data, train speed data when basic unlabeled data comprises gps satellite synchronous time mark, real-time train head and train tail accurate synchronization, 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 in real time this train of wireless transmission encrypted response information rearward of per 2 seconds intervals.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 energy safety), that is to say, following train operator platform wireless transceiver is in the very first time, at first receive the train radio encrypted response information that send continuously at train tailstock wireless transceiver per 2 seconds intervals in the place ahead, explanation is greater than the same direction in 3.8Km place, same station track block section has train to exist, 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.The operator platform wireless transceiver forwards tailstock wireless transceiver of train sends this car and replys enciphered message, after front truck tailstock wireless transceiver is replied enciphered message identification to the rear car of receiving, the basic unlabeled data of the place ahead train is rearward sent at per 2 seconds intervals in real time, rear operator platform wireless transceiver receives the basic unlabeled data of train that front truck tailstock wireless transceiver sends, and transfer to rear car team control computer, rear car team control computer is processed the basic unlabeled data of front truck of receiving in real time, judge distance between two trains, the speed of car after the control.
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 front train information; Wireless signal system for preventing rapid trains from tailgating is shown in accompanying drawing 3.
In the Wireless signal system for preventing rapid trains from tailgating, when track passes through the tunnel, and import and export wireless communication repeater is installed at tunnel internal, prevent that the tunnel from affecting radio communication, shown in accompanying drawing 4.
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 voltage stabilizing circuit, directional antenna form.
GPS circuit in the train signal wireless transmitter can adopt the receiving circuit module or the GPS of America satellite reception 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 to serial ports and the I/O mouth of DSP digital signal processor.
Wireless transceiver circuit in the train signal wireless transmitter can according to Ministry of Railways's wireless communication frequency resource, select suitable frequency to carry out two-channel wireless communication; Present embodiment, adopt the very strong 2.4GHz two-channel wireless mechanics of communication of disturbance rejection, 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 by 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: with RF circuit, power amplifier PA and the transmit-receive switch circuit of 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 voltage stabilizing circuit in the train signal wireless transmitter adopts chargeable 12.8V lithium Fe battery as power supply, and by 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. Wireless signal system for preventing rapid trains from tailgating, 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 described 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 by communication bus respectively with tailstock wireless transceiver;
Described operator platform wireless transceiver and train tailstock wireless transceiver gather synchronous UTC time, latitude, longitude and ground rate information in the global position system GPS simultaneously, carry out again data quick-processing, obtain the basic unlabeled data of this train, basic unlabeled data comprises GPS locating information, train information and satellite synchronization time scale information, target geographic position data when the GPS locating information comprises real-time train head and train tail accurate synchronization, train information comprises train number, train speed, train braking stop conditions and signal information data;
Described tailstock wireless transceiver also is used for the encrypted response information that real-time rearward train sends this train in real time, when receiving that the rear train returns and during encrypted response information that this car key is complementary, rearward train radio is launched the basic unlabeled data of this train in real time;
Described 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, encrypted response information and this car encrypted response information received are carried out interactive identification, conform to such as both keys, then forwards train sends this car encrypted response information, the signal that will receive simultaneously encrypted response information 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 processed 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 Wireless signal system for preventing rapid trains from tailgating claimed in 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 voltage stabilizing circuit, directional antenna form.
3. according to Wireless signal system for preventing rapid trains from tailgating claimed in claim 1, it is characterized in that: the train signal wireless transmitter is selected two working channel f1, f2, channel spacing is greater than 10M, up train wireless communication channel is f1, the down train wireless communication channel is f2, the train signal wireless transmitter can be by 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 Wireless signal system for preventing rapid trains from tailgating claimed in 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 described Wireless signal system for preventing rapid trains from tailgating.
5. according to Wireless signal system for preventing rapid trains from tailgating claimed in claim 1, it is characterized in that: described 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 voltage stabilizing circuit and directional antenna form.
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Application publication date: 20120222 Assignee: Internet of things (Shanghai) Co., Ltd. Assignor: Guo Jianguo|Mao Xingyuan Contract record no.: 2017310000011 Denomination of invention: Wireless signal system for preventing rapid trains from tailgating Granted publication date: 20131016 License type: Exclusive License Record date: 20170316 |
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Assignee: Internet of things (Shanghai) Co., Ltd. Assignor: Guo Jianguo|Mao Xingyuan Contract record no.: 2017310000011 Date of cancellation: 20181108 |