CN102632912B - subway train anti-collision early warning system and method - Google Patents
subway train anti-collision early warning system and method Download PDFInfo
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- CN102632912B CN102632912B CN201210126646.5A CN201210126646A CN102632912B CN 102632912 B CN102632912 B CN 102632912B CN 201210126646 A CN201210126646 A CN 201210126646A CN 102632912 B CN102632912 B CN 102632912B
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Abstract
The present invention relates to a kind of subway train anti-collision early warning system, comprise the contact line along train rail erection and mobile unit, the graded insulation place of contact line is provided with passing phase insulator device, mobile unit is arranged ON TRAINS, comprise the coupling module, signal processing module and the early warning display module that connect successively, described coupling module is coupled with contact line and gathers or send carrier signal, and described signal processing module is all connected with driving safety device with early warning display module; Method comprises the transmission and gatherer process synchronously carried out, by being sent and Information Monitoring by carrier signal in contact line, obtains real-time running information.Compared with prior art, the present invention can realize two-way communication, is not easily interfered, and communication overlay distance will be far longer than existing wireless communication system.
Description
Technical field
The present invention relates to city rail traffic signal system, especially relate to a kind of subway train anti-collision early warning system and method.
Background technology
City rail traffic signal system ensures train operating safety, realizes train traffic control and train operation modernization, improves the critical system equipment of conevying efficiency.
City rail traffic signal system is usually by train automatic controlling system (Automatic Train Control is called for short ATC) composition, and ATC system comprises three subsystems:
Train automatic monitoring system (Automatic Train Supervision is called for short ATS),
Train automatic protection subsystem (Automatic Train Protection is called for short ATP),
ATO system (Automatic Train Operation is called for short ATO).
Three subsystems form closed-loop system by information exchange network, realize ground control with car on control to combine, local control is combined with center-control, form one based on safety means, integrate the train automatic controlling system of the functions such as train traffic control, combustion adjustment and train driving automation.
The ATC system of movable block mode adopts the media such as radio communication, ground cross-inductive loop wire, waveguide, usually to train control on board equipment transmission of information.Train safe spacing distance calculates according to information such as the maximum permission speed of a motor vehicle, current waypoint location, circuits, and information is recycled renewal, to ensure that train uninterruptedly receives instant messages.
Movable block ATC system is the bidirectional data communication equipment utilized between train and ground, make trackside signal facility can obtain each train continuous print positional information, and the operation authority of each train is calculated apart from this, dynamically update and send to train, train, according to the operation authority received and the running status of self, calculates the rate curve of train operation, realizes accurate stopping a train at a target point, realize the train way traffic pattern of protecting completely, be more conducive to giving full play to of road.
The communication mode that current track field of traffic adopts mainly contains: track circuit, inductive loop, inquiry response device, wireless telecommunications.Former three is mainly used in ground and passes on a small amount of data message to train, and wireless telecommunications are mainly used in the voice-and-data both-way communication between train and ground.This several mode is except all needing special infrastructure, and first three kind is only the one-way communication of ground to car, and cannot complete the information interaction between train and train.Though wireless telecommunications can realize the two-way information interaction on train and ground, the communication between train and train is by ground forwarding, the time delay that the information that adds transmits and uncertainty.In addition, inherently there is the shortcoming be easily disturbed in radio communication, and Tie Tong communication system is disturbed more serious in particular, causes reliability decrease.At present, desirably the coordinating of plane system equipment of the data interaction between train with train, this just also proposes very high requirement to ground system equipment dependability.The bidirectional data interaction of existing ATC system mainly relies on the mode of wireless telecommunications, and does not provide the immediate data between train and train mutual.
Contact line refers to electric railway and urban rail transit contact network, being the special supply line that electrified track traffic is specific, set up, provide for electric locomotive or electric EMU electric energy along rail, is the important component part of electrified track traffic traction power supply system.Contact line is a power transmission line, and it has all characteristics that power transmission line has.Contact line, except giving except train power supply, is also a natural carrier communication passage.Utilize contact line and carrier communication just can realize data communication two-way between train and train.Utilize the mode of contact line carrier communication, how many infrastructure investments need not be increased and just can realize data communication two-way between train and train, and frequency spectrum resource is loose, relatively less by extraneous interference.
Summary of the invention
Object of the present invention is exactly provide a kind of subway train anti-collision early warning system in conjunction with contact line and carrier communication and method to overcome defect that above-mentioned prior art exists, the communication of this system and method can realize two-way communication, and is not easily interfered.
Object of the present invention can be achieved through the following technical solutions:
A kind of subway train anti-collision early warning system, this system is connected with the driving safety device of train, comprising:
Contact line, along train rail erection, the graded insulation place of described contact line is provided with passing phase insulator device;
Mobile unit, arrange ON TRAINS, comprise the coupling module, signal processing module and the early warning display module that connect successively, described coupling module is coupled with contact line and gathers or send carrier signal, and described signal processing module is all connected with driving safety device with early warning display module.
Described coupling module at least comprises two couplers, when train is advanced, at least there is the graded insulation place that a coupler is not positioned at contact line.
Described coupler has two, lays respectively at the front and rear of train.
Described signal processing module comprises filtering power amplifier unit, D/A conversion unit, digital frequency conversion filter unit, Base-Band Processing and the communication protocol unit and serioparallel exchange unit that connect successively, described filtering power amplifier unit butt coupling module, described serioparallel exchange unit, is connected by corresponding data-interface between early warning display module and driving safety device respectively between two.
Adopt a subway train anti-collision early warning method for said system, comprise the process of transmitting of this train travel information and the receiving course of other train travel information, described process of transmitting and receiving course synchronously carry out, wherein
Process of transmitting is:
A1) running information of this train is sent to early warning display module and signal processing module by the driving safety device of train respectively;
A2) early warning display module shows the running information of this train, and the running information of signal processing module to this train processes, and generates the carrier signal comprising running information;
A3) carrier signal that signal processing module generates is sent to contact line by coupling module;
Receiving course is:
B1) coupling module is comprised the carrier signal of other train travel information by contact line collection, and is sent to signal processing module;
B2) signal processing module processes the carrier signal comprising other train travel information, obtains the running information of other trains;
B3) running information of other trains is sent to early warning display module by signal processing module, with the running information simultaneous display of this train.
Steps A 2) in the processing procedure of signal processing module comprise the following steps:
A201) running information of parallel mode is converted to the running information of serial mode;
A202) according to communication protocol coding, and Base-Band Processing is carried out;
A203) digital frequency conversion and digital filtering is carried out;
A203) digital signal is converted to analog signal;
A203) carry out analog filtering and power amplification, obtain carrier signal to be sent.
Step B2) in the processing procedure of signal processing module comprise the following steps:
B201) analog filtering and power amplification is carried out;
B202) analog signal is converted to digital signal;
B203) digital frequency conversion and digital filtering is carried out;
B204) carry out Base-Band Processing, and according to communication protocol decoding, obtain running information;
B205) running information of serial mode is converted to the running information of parallel mode.
Described running information comprises the acquisition time of travelling data, the running number of train, positional information and road speed.
Compared with prior art, the present invention utilizes existing urban rail transit contact network and the carrier communication of relative maturity, directly bidirectional data interaction communication between contiguous train can be realized, can at ground system owing to avoiding the generation of train collision situation a variety of causes lost efficacy, guarantee train safe is runed, the contradiction of effective alleviation safety and efficiency, and frequency spectrum resource involved by subway train anti-collision early warning system is loose, relatively less by extraneous interference, and the communication overlay distance in tunnel will be far longer than existing wireless communication system.In addition, for communication, except can realizing the direct data communication of contiguous train, also there is economical and efficient feature.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of present system;
Fig. 2 is the overall structure schematic diagram of present system;
Fig. 3 is the flow chart of the process of transmitting of the inventive method;
Fig. 4 is the flow chart of the receiving course of the inventive method.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment
As shown in Figure 1, a kind of subway train anti-collision early warning system, this system is connected with the driving safety device 5 of train, comprises the contact line 1 along train rail erection and mobile unit.
Contact line due to track traffic is graded insulation, first will install passing phase insulator device 12 additional at graded insulation place, ensure carrier signal can in contact line 1 without hindrance dig defeated, and can Hz noise be isolated.
Mobile unit is arranged on train, comprises the coupling module, signal processing module and the early warning display module 4 that connect successively.Wherein, coupling module comprises two couplers 2, be coupled with contact line 1 and gather or send carrier signal, because coupler 2 may be positioned at graded insulation place, cannot send and reception carrier signal, so two couplers 2 as shown in Figure 2, be located at the front and rear of train respectively, ensure to have at least not to be positioned at a graded insulation place, also just can ensure in time this garage car data to be sent to contiguous train, the data that contiguous train is sent can be received simultaneously, also serve the effect of redundancy backup.Signal processing module then comprises filtering power amplifier unit 31, D/A conversion unit 32, digital frequency conversion filter unit 33, Base-Band Processing and the communication protocol unit 34 and serioparallel exchange unit 35 that connect successively, two couplers 2 in filtering power amplifier unit 31 butt coupling module, serioparallel exchange unit 35, are connected by corresponding data-interface 6 between early warning display module 4 and driving safety device 5 respectively between two.
For a train, the subway train anti-collision early warning method of said system is adopted to include the process of transmitting of this train travel information and the receiving course of other train travel information, running information is the important information comprising the acquisition time of travelling data, the running number of train, positional information and road speed, process of transmitting and receiving course synchronously carry out, immediate updating, ensure that each train can learn the real time information of other contiguous trains, play the effect of anti-collision early warning.
Described process of transmitting is as shown in Figure 3:
Steps A 1) running information of this train is sent to early warning display module and signal processing module by the driving safety device of train respectively;
Steps A 2) early warning display module shows the running information of this train, and the running information of signal processing module to this train processes, and generates the carrier signal comprising running information;
Steps A 3) carrier signal that signal processing module generates is sent to contact line by coupling module;
Described receiving course is:
Step B1) coupling module comprises the carrier signal of other train travel information by contact line collection, and is sent to signal processing module;
Step B2) signal processing module processes the carrier signal comprising other train travel information, obtains the running information of other trains;
Step B3) running information of other trains is sent to early warning display module, with the running information simultaneous display of this train by signal processing module.
Wherein, steps A 2) in the processing procedure of signal processing module specifically comprise the following steps again:
A201) running information of parallel mode is converted to the running information of serial mode;
A202) according to communication protocol coding, and Base-Band Processing is carried out;
A203) digital frequency conversion and digital filtering is carried out;
A203) digital signal is converted to analog signal;
A203) carry out analog filtering and power amplification, obtain carrier signal to be sent.
Step B2) in the processing procedure of signal processing module then comprise the following steps:
B201) analog filtering and power amplification is carried out;
B202) analog signal is converted to digital signal;
B203) digital frequency conversion and digital filtering is carried out;
B204) carry out Base-Band Processing, and according to communication protocol decoding, obtain running information;
B205) running information of serial mode is converted to the running information of parallel mode.
Employing native system and method thereof can when ground system lose efficacy due to a variety of causes, driver can carry out safe realization according to the contiguous train travel information shown by subway train anti-collision early warning system and manually drive a vehicle, just effectively can avoid the situation that train colliding occurs when signal system is paralysed, the contradiction of effective alleviation safety and efficiency, prevents train colliding to have very important value as emergency power system.
Claims (4)
1. a method for early warning for subway train anti-collision early warning system, described system is connected with the driving safety device of train, it is characterized in that, described system comprises:
Contact line, along train rail erection, the graded insulation place of described contact line is provided with passing phase insulator device;
Mobile unit, arrange ON TRAINS, comprise the coupling module, signal processing module and the early warning display module that connect successively, described coupling module is coupled with contact line and gathers or send carrier signal, and described signal processing module is all connected with driving safety device with early warning display module;
Described coupling module at least comprises two couplers, when train is advanced, at least there is the graded insulation place that a coupler is not positioned at contact line;
Described method comprises the process of transmitting of this train travel information and the receiving course of other train travel information, and described process of transmitting and receiving course synchronously carry out, wherein
Process of transmitting is:
A1) running information of this train is sent to early warning display module and signal processing module by the driving safety device of train respectively;
A2) early warning display module shows the running information of this train, and the running information of signal processing module to this train processes, and generates the carrier signal comprising running information;
A3) carrier signal that signal processing module generates is sent to contact line by coupling module;
Receiving course is:
B1) coupling module is comprised the carrier signal of other train travel information by contact line collection, and is sent to signal processing module;
B2) signal processing module processes the carrier signal comprising other train travel information, obtains the running information of other trains;
B3) running information of other trains is sent to early warning display module by signal processing module, with the running information simultaneous display of this train;
Described running information comprises the acquisition time of travelling data, the running number of train, positional information and road speed.
2. the method for early warning of subway train anti-collision early warning system according to claim 1, is characterized in that, described coupler has two, lays respectively at the front and rear of train.
3. the method for early warning of subway train anti-collision early warning system according to claim 1, it is characterized in that, described signal processing module comprises filtering power amplifier unit, D/A conversion unit, digital frequency conversion filter unit, Base-Band Processing and the communication protocol unit and serioparallel exchange unit that connect successively, described filtering power amplifier unit butt coupling module, described serioparallel exchange unit, is connected by corresponding data-interface between early warning display module and driving safety device respectively between two.
4. the method for early warning of subway train anti-collision early warning system according to claim 1, is characterized in that, steps A 2) in the processing procedure of signal processing module comprise the following steps:
A201) running information of parallel mode is converted to the running information of serial mode;
A202) according to communication protocol coding, and Base-Band Processing is carried out;
A203) digital frequency conversion and digital filtering is carried out;
A203) digital signal is converted to analog signal;
A203) carry out analog filtering and power amplification, obtain carrier signal to be sent;
Step B2) in the processing procedure of signal processing module comprise the following steps:
B201) analog filtering and power amplification is carried out;
B202) analog signal is converted to digital signal;
B203) digital frequency conversion and digital filtering is carried out;
B204) carry out Base-Band Processing, and according to communication protocol decoding, obtain running information;
B205) running information of serial mode is converted to the running information of parallel mode.
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| CN201210126646.5A CN102632912B (en) | 2012-04-26 | 2012-04-26 | subway train anti-collision early warning system and method |
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| CN201210126646.5A CN102632912B (en) | 2012-04-26 | 2012-04-26 | subway train anti-collision early warning system and method |
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| CN102632912B true CN102632912B (en) | 2015-08-26 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105188081B (en) * | 2015-08-12 | 2019-01-25 | 西安雷迪信息技术有限公司 | A kind of fault handling method of the rail traffic communication apparatus based on data sharing |
| CN105564466B (en) * | 2015-12-29 | 2017-08-01 | 东华大学 | A kind of train auxiliary security Driving Decision-making system under subway control system failure |
| CN105857342B (en) * | 2016-04-22 | 2017-10-24 | 北京永列科技有限公司 | A kind of powered communication stacking method for axle counting system |
| CN110920673B (en) * | 2019-10-31 | 2021-09-03 | 卡斯柯信号有限公司 | Vehicle control and alarm processing system |
| CN113129642B (en) * | 2020-01-16 | 2023-07-14 | 比亚迪股份有限公司 | Safety vehicle distance early warning system and early warning method |
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| CN1340011A (en) * | 1999-02-22 | 2002-03-13 | 西门子公司 | Method for transmitting a control signal to a vehicle and receiving device for receiving said control signal |
| CN1959753A (en) * | 2006-11-23 | 2007-05-09 | 北京交通大学 | Virtual block system based on radio signal of locomotive |
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Effective date of registration: 20170413 Address after: 200071 Shanghai Zhabei District Tibet North Road, building 10, floor 1-3, No. 489 Patentee after: CRSC COMMUNICATION & INFORMATION GROUP SHANGHAI CO., LTD. Address before: 200436 Shanghai, Zhabei District, West Road, room No. 508, room 179 Patentee before: Shanghai Tonghao Rail Transport Engineering Technology Research Center Co.,Ltd. |
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