CN203211332U - Anti-collision pre-warning device for subway trains - Google Patents
Anti-collision pre-warning device for subway trains Download PDFInfo
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- CN203211332U CN203211332U CN 201320199364 CN201320199364U CN203211332U CN 203211332 U CN203211332 U CN 203211332U CN 201320199364 CN201320199364 CN 201320199364 CN 201320199364 U CN201320199364 U CN 201320199364U CN 203211332 U CN203211332 U CN 203211332U
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Abstract
The utility model discloses an anti-collision pre-warning device for subway trains. The anti-collision pre-warning device comprises RFID (radio frequency identification) tags and vehicle-mounted devices, wherein the RFID tags are arranged on subway tracks at set intervals; one vehicle-mounted device is arranged on each subway train; and each vehicle-mounted device comprises a calculation and control module as well as a tag reader, a inertial navigation device and a wireless transceiver which are connected with the calculation and control module. The trackside RFID tag and the inertial navigation device are combined for positioning, so that real-time position information of the train can be continuously and accurately obtained; the double-frequency wireless transceiver is used for communicating with an adjacent train, and the anti-interference effect is good; the distance between the train and the adjacent train can be independently calculated, a warning signal can be given, and the automation degree is high; and the device can provide accurate train positioning information and can be used for train dispatching management. The anti-collision pre-warning device can be widely applied to safety pre-warning for travelling of the subway trains, the collision risk is reduced, and safe operation is realized.
Description
Technical field
The utility model relates to subway train safe in operation field, specifically is a kind of subway train anti-collision prewarning apparatus.
Background technology
Subway is one of important composition of modern city traffic, and its safety in operation is very important, will directly have influence on safety of life and property in case grave accident takes place.Since subway train running environment complexity, the train running speed height, and spacing distance changes greatly, therefore needs to select the suitable technique means to realize accurate location and the anti-collision early warning function of subway train.
The train operation control system (CBTC system) based on the communication technology is adopted in subway operation both at home and abroad at present mostly, continuous by setting up between the car ground, two-way, communication at a high speed, make train order and state can between vehicle and ground, carry out the real-time reliable exchange, and the accurate position of definite train and the relative distance between train, guarantee the personal distance of train, but the deficiency of its existence is: train operation relies on the control of ground maneuvers center, in case breakdown of equipment or scheduling mistake take place in the control center, because train operator and onboard control device can't obtain other vehicle position information with the rail operation, just may cause safety misadventure between the mutual close train; Communication network adopts the open frequency range of 2.4GHz to set up mostly, and at present big multiradio device such as Wi-Fi etc. all adopt this frequency range, its signal to be vulnerable to disturb, and influence safe train operation.
Document 1: guideway vehicle anti-collision early warning system (CN102700570A, applying date 2012.05.22) operation information that a kind of locating information according to guideway vehicle and parameter select switch are imported is disclosed, the distance that calculates two workshops independently realizes the anti-collision early warning of guideway vehicle, but because the subway train long-play is at subterranean tunnel, and the heave and set gradient and bend are arranged on the circuit, and satellite positioning tech can't be located underground.
Document 2: based on train collision avoidance system and the avoiding collision (CN102765409A thereof of sound sounding, applying date 2012.08.15) according to the transmitting-receiving time difference between acoustic emission apparatus and the sound wave receiving device, calculate the spacing between the train, judge the risk that train collides according to the result, but this method is subjected to the restriction of acoustic wave propagation velocity.
Document 3: the subway train based on the positive location technology is followed the trail of near forewarn system (CN202463845U, applying date 2012.03.16) use single beacon assistant positioning system to realize that the train tracking is near early warning, but accuracy of positioning is subjected to the influence of beacon packing density, locating data is discrete type, can not obtain the continuous position of train etc. in real time.
In sum, existing independently train anti-collision technique is based on satellite positioning, based on millimeter wave radar, based on sound wave, exist following shortcoming based on technology such as beacon auxiliary positioning: can't locate underground, the straight line detection range can't satisfy the requirement of early warning, and there is limitation in the comformability of running environment (underground, overhead etc.), limited by the monitor signal propagation speed, can not obtain the continuous position of train etc. in real time, therefore existing independent anti-collision technique is difficult to effectively play a role, and can not well avoid the train operation accident to take place.
The utility model content
The purpose of this utility model is to provide a kind of accurate positioning, early warning failure-free subway train anti-collision prewarning apparatus, can locate train position in real time automatically, judges and distance with the rail adjacent train, provides early warning signal, makes safe train operation.
The technical solution that realizes the utility model purpose is: a kind of subway train anti-collision prewarning apparatus, comprise RFID label and mobile unit, and described RFID label is disposed on the underground railway track, and the head of each subway train arranges a mobile unit; Described mobile unit comprises calculating and control module, label reader, inertial navigation equipment and wireless transmitting-receiving equipments; And label reader, inertial navigation equipment and wireless transmitting-receiving equipments link to each other with calculating and control module respectively.
Subway train anti-collision prewarning apparatus of the present utility model, described calculating and control module comprise flush bonding processor, and the power module that is connected with this flush bonding processor, reset circuit module, clock module, debugging interface module, first communication interface modules, second communication interface module and third communication interface module; Described first communication interface modules links to each other with label reader, and the second communication interface module links to each other with inertial navigation equipment, and third communication interface module links to each other with wireless transmitting-receiving equipments.Described wireless transmitting-receiving equipments adopts the double frequency design.
The utility model compared with prior art, its remarkable advantage: 1) system can locate this parking stall automatically and puts, and does not rely on train control system and dispatching system, independently calculate and adjacent train between distance, and provide alerting signal, the degree of automation height; 2) system adopts the other RFID label of rail and inertial navigation equipment co-located, can accurately obtain the real-time position information of this car continuously; 3) system adopts double-frequency wireless transceiver and adjacent train to communicate, and disturbance rejection is effective; 4) system can provide accurate train locating information, can be used for the train scheduling management.
Below in conjunction with accompanying drawing the utility model is described in further detail.
Description of drawings
Fig. 1 is composition structure and the principle of work scheme drawing of the utility model subway train anti-collision prewarning apparatus.
Fig. 2 is the calculating of the utility model subway train anti-collision prewarning apparatus and the structural representation of control module.
Fig. 3 is the schematic flow sheet of the utility model subway train anti-collision early warning method.
The specific embodiment
In conjunction with Fig. 1, the utility model subway train anti-collision prewarning apparatus comprises RFID label 1 and mobile unit 2, and described RFID label 1 is arranged on the underground railway track according to setting spacing, and the head of each subway train arranges a mobile unit 2; Described mobile unit 2 comprises calculating and control module 21, label reader 22, inertial navigation equipment 23 and wireless transmitting-receiving equipments 24; And label reader 22, inertial navigation equipment 23 and wireless transmitting-receiving equipments 24 link to each other with calculating and control module 21 respectively.
The other device RF ID of rail label 1 storage tags position information externally sends location information.Location information can adopt the mode of longitude, latitude, height and circuit mileage to describe, and when RFID label 1 was installed, location and accurate map obtained via satellite, and are stored in the RFID label 1, for system provides accurate localization information.
Calculating and control module 21 are core processing unit, hardware using embedded microprocessor and multichannel communication multiple telecommunication interface, realize the communication function with label reader 22, inertial navigation equipment 23 and wireless transmitting-receiving equipments 24, software is realized the control function of data computation processing capacity and system, judge the distance between this car and the adjacent train, if less than predefined safety distance, provide early warning signal.Wireless transmitting-receiving equipments 24 adopts the double frequency design.
In conjunction with Fig. 2, the calculating of mobile unit 2 and control module 21 comprise flush bonding processor 21-1, and the power module 21-2 that is connected with this flush bonding processor 21-1, reset circuit module 21-3, clock module 21-4, debugging interface module 21-5, the first communication interface modules 21-6, second communication interface module 21-7 and third communication interface module 21-8; The described first communication interface modules 21-6 links to each other with label reader 22, and second communication interface module 21-7 links to each other with inertial navigation equipment 23, and third communication interface module 21-8 links to each other with wireless transmitting-receiving equipments 24.Power module 21-2 provides working power for flush bonding processor 21-1, clock module 21-4 provides clock signal for flush bonding processor, reset circuit module 21-3 is used for providing reset signal when breaking down in flush bonding processor 21-1 work, and debugging interface module 21-5 is used for application program is downloaded to flush bonding processor 21-1 and the inner service condition of observation when flush bonding processor 21-1 works.
The utility model subway train anti-collision prewarning apparatus does not rely on train control system and dispatching system, the independent distance of calculating between this car and adjacent train, and provide alerting signal.RFID label 1 and inertial navigation equipment 23 combined calculation are adopted in the train location, RFID label 1 provides the accurate longitude in position, latitude, height and circuit mileage information, inertial navigation equipment 23 utilizes this information to carry out cumulative errors and proofreaies and correct, principle of work by self determines, real-time output train location information, therefore in the subway train operation completely, no matter the conversion of running environment, system can both carry out train independently and accurately locate.Because the radio communication of single channel, be subject to disturb, cause information dropout, therefore, in this device, the 24 employing double frequencies designs of employing wireless transmitting-receiving equipments, by two radio band synchronized transmissions and reception information frame, calculating and control module 21 are handled with other train position information that receives in real time to this parking stall information of putting, if distance is much larger than predefined safety distance between train, be left intact, if less than safety distance, provide alerting signal.Alerting signal can be connected with train control system, adopts sound and light alarm or alternate manner prompting train operator.System can report the subway dispatching system with real-time position information by communication network, is used for train scheduling.
Particularly, a kind of anti-collision early warning method based on above-mentioned subway train anti-collision prewarning apparatus may further comprise the steps:
Step 1, system power on, and finish initialization: location and accurate map obtain the location information at each RFID label 1 place via satellite, and are stored in the RFID label 1 of correspondence position; The safety distance that arranges between the adjacent train is l
0
Step 2, train operation are during to RFID label 1 position, label reader 22 obtains the location information of this RFID label 1 storage and sends to and calculates and control module 21, export to inertial navigation equipment 23 by calculating and control module 21, utilize this location information that the train position information that inertial navigation equipment 23 calculates is revised, obtain the train real-time position information;
Step 3, inertial navigation equipment 23 are exported to the train real-time position information and are calculated and control module 21;
Step 4, wireless transmitting-receiving equipments 24 adopt the double frequency design, by two radio band synchronized transmissions with receive the information frame data: calculate and 24 overseas broadcasts of control module 21 control twoway radios send the real-time position information of this train, wireless transmitting-receiving equipments 24 receives real-time position information that other trains send to calculating and control module 21 simultaneously;
The real-time position information that step 5, calculating and 21 pairs of double frequencies of control module receive is judged, reject the misdata of being disturbed by judging, obtain the correct real-time position information of train, be specially: the information frame data that calculating and 21 pairs of two radio bands of control module receive are judged, if it is identical, it is correct to show that information frame receives, if it is different, showing to have to disturb causes data to be made mistakes, adopt the historical data filter forecasting to compare, reject misdata, obtain the correct real-time position information of train.
Step 6, calculating and control module 21 be according to the real-time position information of this train and adjacent train, judge between train apart from l, if l 〉=l
0, be left intact; If l＜l
0, provide alerting signal.
Do further detailed description below in conjunction with the utility model of embodiment.
Embodiment 1
In conjunction with Fig. 1, be example with train a and train b, composition and the principle of work of device is described.
Utilize satellite positioning and accurate map to determine the precise position information of the other device RF ID of each rail label 1 in advance, can adopt the mode of longitude, latitude, height and circuit mileage to describe, at underground railway track the setting spacing is installed along the line and installs, select the SP-TGS series electronic label of Shanghai Super Electronic Technology Co., Ltd. for use.Each train is installed a chassis and is carried equipment, on train a and train b mobile unit 2 is installed respectively as shown in the figure.Mobile unit 2 comprises calculating and control module 21, label reader 22, inertial navigation equipment 23 and wireless transmitting-receiving equipments 24.Label reader 22 is identical with the other device RF ID of rail label 1 signalling methods, the other device RF ID of rail label 1 is used for stored position information, label reader 22 is used for obtaining this location information, optional reader of sending the SP-RFS series of electronics technology Co., Ltd with the Shanghai show.Inertial navigation equipment 23 is according to self principle of work, exportable real-time position information, but in the process of working long hours, there is accumulated error, therefore calculating and control module 21 are proofreaied and correct inertial navigation equipment 23 from the location information that label reader 22 obtains the other device RF ID of rail label 1, avoid accumulated error, the accuracy of location in keeping working long hours can be selected the type products such as XW-IMU5220 of Beijing StarNeto Technology Corporation Limited for use.Wireless transmitting-receiving equipments 24 adopts two radio band synchronized transmissions and receives information frame, and the optional 900MHz of frequency range and 490MHz, or other frequency range can select the wireless data sending series of products of the beneficial Science and Technology Ltd. of section China in the Shenzhen or design related circuit voluntarily.
In conjunction with Fig. 2, the formation of calculating and control module 21 is described.Flush bonding processor can be selected ARM family chip or dsp chip for use, as selecting the LPC ARM family chip of NXP company for use.Three tunnel communication interfaces can adopt Design of serial communication interface based, as UART (RS232/485), SPI etc., also can adopt the communication interface of other types such as CAN bus to realize.
In conjunction with Fig. 1 and Fig. 3, the workflow of subway train anti-collision prewarning apparatus is described.The other device RF ID of rail label 1 preestablishes spacing, spacing is determined by the accuracy of positioning of system requirements and the performance synthesis of inertial navigation equipment, such as positioning accuracy request 3m, the inertial navigation equipment output valve can be drifted about, error reaches 3m in 1 minute, so, must once proofread and correct inertial navigation equipment in per 1 minute, the spacing of RFID label then should be less than subway train minimum speed distance of travelling according to operation in 1 minute; The safety distance that arranges between the adjacent train is l
0, safety distance l
0Be to obtain safety distance l according to COMPREHENSIVE CALCULATING such as train real-time speed, train braking distances
0Value should be greater than train under present speed, brake required stopping distance and train length's sum.Attachment rail is along the line, and normal operation is finished in setting.
Train a is in operational process, and the inertial navigation equipment 23 of mobile unit 2 calculates the real-time position information of output train and gives calculating and control module 21; When the other device RF ID of rail label 1 position was arrived in train operation, label reader 22 obtained the location information of the other device RF ID of rail label 1 storage, and calculating and control module 21 send to inertial navigation equipment 23 with this information and carry out the inertial navigation output calibration; Calculating and 24 overseas broadcasts of control module 21 control twoway radios send the real-time position information of train, two frequency range synchronized transmissions; Twoway radio 24 receives the real-time position information that other train sends, mobile unit 2 as train b, the software of calculating and control module 21 is judged the information frame data that two frequency ranges receive, if identical, it is correct to show that information frame receives, if different, showing to have to disturb causes data to be made mistakes, adopt the historical data filter forecasting to compare, reject misdata, obtain the correct location information of train b; Calculate and the software of control module 21 is judged the position data of this car real time position data and train b, if distance is much larger than predefined safety distance l between two trains
0, be left intact, if approach or less than safety distance, provide alerting signal.Train operator can be according to alarm, and operation car retardation or stop to avoid train accident to take place, and guarantees traffic safety.
As from the foregoing, device of the present utility model can accurately be located train position in real time, judges and distance with the rail adjacent train, provides early warning signal, realizes safe operation.
Claims (3)
1. a subway train anti-collision prewarning apparatus is characterized in that, comprises RFID label (1) and mobile unit (2), and described RFID label (1) is disposed on the underground railway track, and the head of each subway train arranges a mobile unit (2); Described mobile unit (2) comprises calculating and control module (21), label reader (22), inertial navigation equipment (23) and wireless transmitting-receiving equipments (24); And label reader (22), inertial navigation equipment (23) and wireless transmitting-receiving equipments (24) link to each other with calculating and control module (21) respectively.
2. subway train anti-collision prewarning apparatus according to claim 1, it is characterized in that, described calculating and control module (21) comprise flush bonding processor (21-1), and the power module (21-2) that is connected with this flush bonding processor (21-1), reset circuit module (21-3), clock module (21-4), debugging interface module (21-5), first communication interface modules (21-6), second communication interface module (21-7) and third communication interface module (21-8); Described first communication interface modules (21-6) links to each other with label reader (22), and second communication interface module (21-7) links to each other with inertial navigation equipment (23), and third communication interface module (21-8) links to each other with wireless transmitting-receiving equipments (24).
3. subway train anti-collision prewarning apparatus according to claim 1 is characterized in that, described wireless transmitting-receiving equipments (24) adopts the double frequency design.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320199364 CN203211332U (en) | 2013-04-18 | 2013-04-18 | Anti-collision pre-warning device for subway trains |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320199364 CN203211332U (en) | 2013-04-18 | 2013-04-18 | Anti-collision pre-warning device for subway trains |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103192852A (en) * | 2013-04-18 | 2013-07-10 | 南京理工大学 | Subway train collision-avoidance early-warning device and method thereof |
| CN105083322A (en) * | 2015-03-31 | 2015-11-25 | 江苏理工学院 | Subway train collision early warning method |
| CN108216310A (en) * | 2017-11-29 | 2018-06-29 | 广西大学 | Train tracks early warning system |
| CN109131446A (en) * | 2017-06-15 | 2019-01-04 | 北京通号国铁城市轨道技术有限公司 | Train DAS (Driver Assistant System) based on wireless LoRa network |
| CN109795483A (en) * | 2018-12-29 | 2019-05-24 | 深圳华侨城文化旅游科技股份有限公司 | A kind of anticollision method, system and the storage medium of railcar |
| CN115158395A (en) * | 2022-08-08 | 2022-10-11 | 中车青岛四方机车车辆股份有限公司 | Rail end vehicle anti-collision protection method, system, medium, equipment and vehicle |
-
2013
- 2013-04-18 CN CN 201320199364 patent/CN203211332U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103192852A (en) * | 2013-04-18 | 2013-07-10 | 南京理工大学 | Subway train collision-avoidance early-warning device and method thereof |
| CN105083322A (en) * | 2015-03-31 | 2015-11-25 | 江苏理工学院 | Subway train collision early warning method |
| CN109131446A (en) * | 2017-06-15 | 2019-01-04 | 北京通号国铁城市轨道技术有限公司 | Train DAS (Driver Assistant System) based on wireless LoRa network |
| CN108216310A (en) * | 2017-11-29 | 2018-06-29 | 广西大学 | Train tracks early warning system |
| CN109795483A (en) * | 2018-12-29 | 2019-05-24 | 深圳华侨城文化旅游科技股份有限公司 | A kind of anticollision method, system and the storage medium of railcar |
| CN109795483B (en) * | 2018-12-29 | 2020-09-04 | 深圳华侨城文化旅游科技集团有限公司 | Anti-collision method and system for rail car and storage medium |
| CN115158395A (en) * | 2022-08-08 | 2022-10-11 | 中车青岛四方机车车辆股份有限公司 | Rail end vehicle anti-collision protection method, system, medium, equipment and vehicle |
| CN115158395B (en) * | 2022-08-08 | 2024-05-17 | 中车青岛四方机车车辆股份有限公司 | Method, system, medium, equipment and vehicle for protecting railway end vehicle from rushing out |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130925 Termination date: 20150418 |
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| EXPY | Termination of patent right or utility model |