WO2016206584A1

WO2016206584A1 - On-board apparatus and train communication system

Info

Publication number: WO2016206584A1
Application number: PCT/CN2016/086682
Authority: WO
Inventors: 韩琛; 吕浩炯; 吴卫平; 唐国平; 李辉; 徐娟
Original assignee: 株洲中车时代电气股份有限公司
Priority date: 2015-06-26
Filing date: 2016-06-22
Publication date: 2016-12-29
Also published as: EP3315379B1; EP3315379A4; EP3315379A1; CN105035126B; CN105035126A

Abstract

Provided is an on-board apparatus comprising: a wireless communication device, receiving a switch indication from a ground transponder; a time management device, determining a wireless timeout time slice after the wireless communication device receives the switch indication from the ground transponder; a storage device, storing the content of a communication with a takeover zone controller (ZC) when the wireless communication device pauses the communication with the takeover ZC; and a processing device, determining a next movement authority (MA) according to the content of the communication with the takeover ZC, and determining whether a current MA is connected to the next MA, wherein if the current MA is connected to the next MA, a zone switching is performed. Further provided is a train communication system comprising the on-board apparatus. The on-board apparatus improves operating efficiency when a train passes through a border zone and only one wireless communication device is utilizable.

Description

Vehicle-mounted equipment and train communication system

Cross-reference to related art

The present application claims priority to Chinese Patent Application No. 201510367587.4, filed on Jun. 26,,,,,,,,,,,,,,,

Technical field

The present invention relates to the field of train control technology, and in particular to an in-vehicle device and a train communication system.

Background technique

With the rapid development of urban rail transit, the Communication Based Train Control (CBTC) based on wireless communication has been widely used. The Zone Controller (ZC) is the core subsystem of the CBTC system. It is the train for each communication according to the precise position reported by the communication train and the axle occupancy/idle, switch and signal state of the interlock report. Calculate the Mobile Authority (MA) to control the safe operation of the train.

In the longer line, more than one ZC is generally arranged. During the train running, the train and trackside information are exchanged between the two area controllers to jointly control the train safety, high speed and seamlessly pass through the two areas. The boundary area of the controller, a process called zone switching. In the present invention, the ZC to which the train is to be driven is referred to as the handover ZC, and the ZC to which the train is to enter is referred to as the take-over ZC.

The in-vehicle equipment of the existing CBTC train is generally equipped with two available wireless communication devices, two wireless communication devices work simultaneously and are mutually hot standby, one is responsible for communicating with the handover ZC and the other is responsible for communicating with the takeover ZC. The in-vehicle device integrates two MAs from the ZC to safely, efficiently and seamlessly pass through the boundary areas of the two ZCs.

However, the in-vehicle device of the CBCT train always communicates with the handover ZC when only one wireless communication device is available. When the train enters the ZC boundary area, it stops and switches to the manual driving mode. The train driver drives the train through the ZC boundary area, and then switches back to the CBTC mode according to the operation flow. Under this circumstance, the running efficiency of the train passing through the ZC junction area is low, and the workload of the train driver is increased, which affects the operating efficiency of the entire train and even the entire line.

Summary of the invention

It is an object of the present invention to provide an in-vehicle device and a train communication system that solves the technical problem of inefficient operation when a train passes through a ZC boundary region in the case where only one wireless communication device is available.

A first aspect of the present invention provides an in-vehicle device, the in-vehicle device comprising:

a wireless communication device that receives a handover indication from a ground transponder;

a time management device, after the wireless communication device receives a handover instruction from the ground transponder, determining a wireless timeout period slice;

The wireless communication device suspends communication with the handover ZC within a wireless timeout period and within the scope of the current mobility grant; in the next wireless timeout period, establishing communication with the takeover ZC, to the takeover ZC Reporting the train location and suspending communication with the takeover ZC at the end of the wireless timeout period;

a storage device that saves communication content with the takeover ZC when the wireless communication device suspends communication with the takeover ZC;

The processing device determines, according to the communication content with the takeover ZC, a next mobility authorization; and determines whether the current mobility authorization and the next mobility authorization are connected, when determining the current mobility authorization and the next When the mobile authorization is connected, the area is switched.

The storage device saves the communication state and the communication content with the handover ZC when the wireless communication device suspends communication with the handover ZC.

Wherein, when the storage device saves the communication content with the takeover ZC, the storage device also saves the communication state with the takeover ZC.

Wherein the processing device determines that the current mobile authorization and the next mobile authorization are separated:

A wireless timeout on-chip:

The wireless communication device resumes communication with the handover ZC according to the communication state and communication content of the handover ZC held by the storage device, and reports the train position to the handover ZC; the processing device according to the current Handing over the communication content of the ZC, updating the current mobility authorization; the wireless communication device suspending communication with the handover ZC at the end of the wireless timeout time slice; the storage device retains the communication state with the handover ZC and Communication content;

Next wireless timeout time on-chip:

The wireless communication device resumes communication with the takeover ZC according to the communication state and communication content held by the storage device with the takeover ZC, and reports the train position to the takeover ZC; the processing device according to the current Retrieving the communication content of the ZC, updating the next mobility authorization; the wireless communication device suspends communication with the takeover ZC at the end of the wireless timeout period; the storage device saves communication status and communication with the takeover ZC Content

The processing device performs area switching when it is determined that the updated current mobility authorization and the updated next mobility authorization are connected.

The wireless communication device terminates communication with the handover ZC after entering the area corresponding to the takeover ZC.

The wireless timeout period slice is equal to the shorter of the duration of the current mobile grant and the maximum communication duration of the wireless communication device and the ground transponder for wireless communication.

The time management device further sets a safety margin duration, and determines a wireless timeout period according to the safety margin duration.

The wireless timeout period slice is equal to a difference between a duration of the current mobility grant, a duration of the wireless communication device and a maximum communication duration of wireless communication by the ground transponder, and a safety margin duration.

A second aspect of the present invention provides a train communication system including the above-described vehicle-mounted device.

The present invention brings about the following advantageous effects: an embodiment of the present invention provides an in-vehicle device having only one available wireless communication device. The only wireless communication device in the in-vehicle device communicates with the handover ZC and the takeover ZC in a time-sharing manner, and the processing device in the in-vehicle device acquires the current MA and the next MA from the two ZCs respectively, and guarantees the current MA and the next MA phase. When it is connected, the area is switched. When there is only one wireless communication device, the on-board equipment of the train can also automatically drive in the CBTC mode, which improves the operation efficiency of the train passing through the ZC junction area, and ensures the operation efficiency of the entire train and even the entire line.

Other features and advantages of the invention will be set forth in the description which follows, The objectives and other advantages of the invention may be realized and obtained by means of the structure particularly pointed in the appended claims.

DRAWINGS

The drawings are intended to provide a further understanding of the invention, and are intended to be a part of the description of the invention. In the drawing:

FIG. 1 is a schematic structural diagram of an in-vehicle device according to an embodiment of the present invention.

detailed description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings.

An embodiment of the present invention provides an in-vehicle device. As shown in FIG. 1 , only one wireless communication device that communicates with the ZC is available in the in-vehicle device, which means that the in-vehicle device can only communicate with one ZC, and cannot simultaneously ZC communication. Under this premise, the wireless communication device in the embodiment of the present invention maintains communication with two ZCs by means of time-sharing communication. In addition, the in-vehicle device further includes a part of a time management device, a storage device, and a processing device, and each part works in cooperation to jointly implement a time-sharing communication function of the wireless communication device, as follows:

The wireless communication device in the in-vehicle device receives a handover indication from the ground transponder. A ground transponder is a point device for transmitting information to a train, divided into a fixed (passive) transponder and a variable (active) transponder. When the train passes over the ground transponder, the ground transponder receives the electromagnetic energy transmitted by the on-board equipment of the train, and the ground transponder converts the electromagnetic energy into working power, starts the operation of the electronic circuit, and pre-stores or lines. The transmission message transmitted by the Sideside Electronic Unit (LEU) is cyclically transmitted until the electromagnetic energy disappears, that is, the train leaves the ground transponder.

In the embodiment of the present invention, the ZC that the train is about to leave is referred to as the handover ZC, and the ZC that the train is about to enter is referred to as the takeover ZC. The transmission message of the ground transponder includes a switching instruction indicating that the train is about to enter the control area of the take-over ZC, from which the wireless communication device of the in-vehicle device can know which of the take-over ZCs that need to communicate.

After receiving the switching command from the ground transponder, the wireless communication device of the in-vehicle device determines the wireless timeout period involved in the wireless communication by the time management device in the in-vehicle device. The wireless timeout period specifies the maximum duration that the wireless communication device and the ZC can suspend communication while maintaining communication. As long as the communication pause duration of the wireless communication device and the ZC is less than or equal to the wireless timeout period, the wireless communication device can continue to communicate with the ZC before the communication is suspended, and the communication content continues to communicate with the ZC.

When the train travels in the area where the ZC is handed over, the wireless communication device always maintains communication with the handover ZC, and provides the train position and other information to the handover ZC. The handover ZC will be the train according to the train position and the status information of the line obstacle and the interlock condition. The MA is calculated in the embodiment of the present invention, and the MA calculated by the handover ZC is referred to as the current MA. The MA is a formal authorization required for the train to travel safely to the next parking position to achieve safe interval control of the train. The train safety separation distance is calculated based on the maximum allowed speed, the current parking point position, the line and other information, and the information is dynamically cycled and refreshed.

The wireless timeout period in the embodiment of the present invention should be less than or equal to the current mobile authorization, in order to ensure that the train can continue to run for a period of time after the communication between the wireless communication device is suspended and transferred to the ZC. Duration. Therefore, in the embodiment of the present invention, the wireless timeout period is equal to the duration of the current mobile authorization, the maximum communication duration of the wireless communication device and the ground transponder wireless communication (ie, the maximum duration of wireless communication with the terrestrial transponder). The smaller of them. Under this premise, the wireless communication device suspends communication with the handover ZC. In order to enable the wireless communication device to resume and resume communication with the handover ZC after the communication is suspended, the storage device saves the communication state and communication content of the handover ZC while the wireless communication device suspends communication with the handover ZC. The wireless communication device can establish time-sharing communication with the handover ZC and the takeover ZC based on the wireless timeout time slice, and realize only When a wireless communication device is available, it is also possible to ensure that the train performs area switching efficiently, seamlessly, and safely.

After the wireless communication device suspends communication with the handover ZC, the communication with the takeover ZC is started immediately, and the timing of the next wireless timeout period is started.

In the case where the wireless communication device communicates with the takeover ZC, the related information such as the train position is also submitted to the takeover ZC. Similar to the handover ZC, the takeover ZC will calculate the MA for the train based on the train position and the status information of the line obstacles and the interlock condition. In the embodiment of the present invention, the MA calculated by taking over the ZC is referred to as the next MA.

At the end of the wireless timeout period, the wireless communication device suspends communication with the takeover ZC and saves the communication content with the takeover ZC. In order to be able to resume and resume communication with the takeover ZC after the pause, the storage device needs to save the communication content and communication state with the takeover ZC while the wireless communication device pauses communication with the takeover ZC.

The in-vehicle device of the train determines the next MA corresponding to the ZC based on the saved communication content with the takeover ZC.

Since each MA corresponds to a certain path, in order to ensure that the train can perform area switching efficiently, seamlessly and safely, the processing device in the in-vehicle device needs to ensure that the current MA corresponding to the handover ZC and the next MA corresponding to the takeover ZC are connected. That is, the path of the current MA and the next MA is partially overlapped or just seamlessly connected. If the current MA is connected to the next MA, the processing device of the train can completely form an MA that crosses the handover ZC and enters the take-over ZC, ensuring that the train can smoothly and safely and efficiently pass the ZC boundary according to the MA, and enter the take-over ZC. Jurisdiction.

After the processing device determines that the train has the conditions for efficient, seamless, and safe regional switching, the processing device respectively sends the MA transmitted to the in-vehicle device according to the handover ZC and the takeover ZC to form an MA that crosses the ZC boundary, thereby completing safe and efficient operation. Seamless ZC switching. After the train enters the area under the jurisdiction of the ZC, the wireless communication device cuts off the wireless communication with the handover ZC, and only maintains wireless communication with the takeover ZC, while taking over the ZC as the master ZC. In the area where the ZC is taken over, the wireless communication device always maintains communication with the takeover ZC until the next time an area switch is required.

On the other hand, if the processing device determines that the current mobility authorization and the next mobility authorization are separated, the wireless communication device needs to resume communication with the handover ZC and the takeover ZC in succession, and the processing device updates the current MA corresponding to the handover ZC and the next corresponding to the takeover ZC. MA.

Specifically, in a wireless timeout period: the wireless communication device resumes communication with the handover ZC according to the communication state and communication content saved by the storage device with the handover ZC, and reports the train position to the handover ZC; the processing device according to the current and handover The communication content of the ZC updates the current mobile authorization; the wireless communication device suspends communication with the handover ZC at the end of the wireless timeout period; the storage device saves and communicates the communication status and communication content of the ZC.

In the next wireless timeout period: the wireless communication device communicates with the takeover ZC according to the storage device The status and communication content, resume communication with the takeover ZC, report the train position to the takeover ZC; the processing device updates the next mobile authorization according to the current communication content with the takeover ZC; the wireless communication device pauses at the end of the wireless timeout period Take over the communication of the ZC; the storage device saves the communication status and communication content with the takeover ZC.

After the current mobile authorization and the next mobile authorization are both updated, the processing device determines that the updated current mobility authorization and the updated next mobility authorization are connected, and performs area switching. Otherwise, the current mobility grant and the next mobility grant are re-updated until the processing device determines that the current mobility grant is connected to the next mobility grant.

The ZC of the CBTC system can usually transmit information to the in-vehicle device using wireless communication, terrestrial cross-sensing loops, and waveguides. In order to ensure that the communication between the wireless communication device and the ZC is not interrupted by external conditions, in the embodiment of the present invention, the time management device needs to set the safety margin duration before determining the wireless timeout period. At this time, the wireless timeout period is equal to the difference between the shorter duration of the current mobility grant, the maximum communication duration of the wireless communication device and the ground transponder wireless communication, and the safety margin duration. The safety margin duration is determined based on factors such as the communication medium and communication method of the ZC and the wireless communication device.

In the above, the embodiments of the present invention provide an in-vehicle device having only one available wireless communication device. The only wireless communication device in the in-vehicle device communicates with the handover ZC and the takeover ZC in a time-sharing manner, and the processing device in the in-vehicle device acquires the current MA and the next MA from the two ZCs respectively, and guarantees the current MA and the next MA phase. When it is connected, the area is switched. When there is only one wireless communication device, the on-board equipment of the train can also automatically drive in the CBTC mode, which improves the operation efficiency of the train passing through the ZC junction area, and ensures the operation efficiency of the entire train and even the entire line.

Further, an embodiment of the present invention further provides a train communication system including the above-described vehicle-mounted device.

While the embodiments of the present invention have been described above, the described embodiments are merely illustrative of the embodiments of the invention and are not intended to limit the invention. Any modification and variation of the form and details of the embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention. It is still subject to the scope defined by the appended claims.

Claims

An in-vehicle device, comprising:

a wireless communication device that receives a handover indication from a ground transponder;

a time management device, after the wireless communication device receives a handover instruction from the ground transponder, determining a wireless timeout period slice;

The wireless communication device suspends communication with the handover ZC within a wireless timeout period and within the scope of the current mobility authorization; establishes communication with the takeover ZC in the next wireless timeout period, and reports the train to the takeover ZC Location, and at the end of the wireless timeout period, suspend communication with the takeover ZC;

a storage device that saves communication content with the takeover ZC when the wireless communication device suspends communication with the takeover ZC;

The processing device determines, according to the communication content with the takeover ZC, a next mobility authorization; and determines whether the current mobility authorization and the next mobility authorization are connected, when determining the current mobility authorization and the next When the mobile authorization is connected, the area is switched.
The in-vehicle device according to claim 1, wherein said storage means saves a communication state and communication content with said handover ZC when said wireless communication device suspends communication with said handover ZC.
The in-vehicle device according to claim 2, wherein said storage means further stores a communication state with said takeover ZC when storing the communication content with said takeover ZC.
The in-vehicle device according to claim 3, wherein said processing means, when determining that said current mobile authorization and said next mobile authorization are separated:

A wireless timeout on-chip:

The wireless communication device resumes communication with the handover ZC according to the communication state and communication content of the handover ZC held by the storage device, and reports the train position to the handover ZC; the processing device according to the current Handing over the communication content of the ZC, updating the current mobility authorization; the wireless communication device suspending communication with the handover ZC at the end of the wireless timeout time slice; the storage device retains the communication state with the handover ZC and Communication content;

Next wireless timeout time on-chip:

The wireless communication device resumes communication with the takeover ZC according to the communication state and communication content held by the storage device with the takeover ZC, and reports the train position to the takeover ZC; the processing device according to the current Retrieving the communication content of the ZC, updating the next mobility authorization; the wireless communication device suspends communication with the takeover ZC at the end of the wireless timeout period; the storage device saves communication status and communication with the takeover ZC Content

The processing device performs area switching when it is determined that the updated current mobility authorization and the updated next mobility authorization are connected.
The in-vehicle device according to claim 4, characterized in that

The wireless communication device terminates communication with the handover ZC after entering the area corresponding to the takeover ZC.
The in-vehicle device according to claim 5, characterized in that

The wireless timeout period slice is equal to the lesser of the duration of the current mobile grant, and the maximum communication duration of the wireless communication device and the ground transponder for wireless communication.
The in-vehicle device according to claim 5, wherein the time management means further sets a safety margin duration and determines a wireless timeout period based on the safety margin duration.
The in-vehicle device according to claim 7, wherein

The wireless timeout period slice is equal to the difference between the lesser duration of the current mobility grant, the maximum communication duration of the wireless communication device and the ground transponder for wireless communication, and the safety margin duration.
A train communication system, comprising: an in-vehicle device, the on-vehicle device comprising:

a wireless communication device that receives a handover indication from a ground transponder;

a time management device, after the wireless communication device receives a handover instruction from the ground transponder, determining a wireless timeout period slice;

The wireless communication device suspends communication with the handover ZC within a wireless timeout period and within the scope of the current mobility authorization; establishes communication with the takeover ZC in the next wireless timeout period, and reports the train to the takeover ZC Location, and at the end of the wireless timeout period, suspend communication with the takeover ZC;

a storage device that saves communication content with the takeover ZC when the wireless communication device suspends communication with the takeover ZC;

The processing device determines, according to the communication content with the takeover ZC, a next mobility authorization; and determines whether the current mobility authorization and the next mobility authorization are connected, when determining the current mobility authorization and the next When the mobile authorization is connected, the area is switched.
The train communication system according to claim 9, wherein said storage means stores a communication state and communication content with said handover ZC when said wireless communication device suspends communication with said handover ZC.
The train communication system according to claim 10, wherein said storage means maintains a communication state with said takeover ZC when storing the communication content with said takeover ZC.
The train communication system according to claim 11, wherein said processing means, when determining that said current mobile authorization and said next mobile authorization are separated:

A wireless timeout on-chip:

The wireless communication device resumes communication with the handover ZC according to the communication state and communication content of the handover ZC held by the storage device, and reports the train position to the handover ZC; the processing device according to the current Handing over the communication content of the ZC, updating the current mobility authorization; the wireless communication device suspending communication with the handover ZC at the end of the wireless timeout time slice; the storage device retains the communication state with the handover ZC and Communication content;

Next wireless timeout time on-chip:

The wireless communication device resumes communication with the takeover ZC according to the communication state and communication content held by the storage device with the takeover ZC, and reports the train position to the takeover ZC; the processing device according to the current Retrieving the communication content of the ZC, updating the next mobility authorization; the wireless communication device suspends communication with the takeover ZC at the end of the wireless timeout period; the storage device saves communication status and communication with the takeover ZC content;

The processing device performs area switching when it is determined that the updated current mobility authorization and the updated next mobility authorization are connected.
A train communication system according to claim 12, characterized in that

The wireless communication device terminates communication with the handover ZC after entering the area corresponding to the takeover ZC.
A train communication system according to claim 13, wherein:

The wireless timeout period slice is equal to the lesser of the duration of the current mobile grant, and the maximum communication duration of the wireless communication device and the ground transponder for wireless communication.
The train communication system according to claim 13, wherein said time management means further sets a safety margin duration, and determines a wireless timeout period based on said safety margin duration.
A train communication system according to claim 15, wherein:

The wireless timeout period slice is equal to the difference between the lesser duration of the current mobility grant, the maximum communication duration of the wireless communication device and the ground transponder for wireless communication, and the safety margin duration.