WO2018113703A1

WO2018113703A1 - Train positioning method and system and train interlocking device

Info

Publication number: WO2018113703A1
Application number: PCT/CN2017/117528
Authority: WO
Inventors: 丁剑; 王发平
Original assignee: 比亚迪股份有限公司
Priority date: 2016-12-21
Filing date: 2017-12-20
Publication date: 2018-06-28
Also published as: CN108263447A

Abstract

The present invention provides a train positioning method and system and an interlocking device. The system comprises a vehicle-mounted radio frequency label and the interlocking device. The interlocking device comprises a rail-side antenna device and a positioning unit. The vehicle-mounted radio frequency label is attached to the body of a train, and is used for recording a train identifier of the train. The rail-side antenna device is disposed beside a rail on which the train drives, and is used for reading the vehicle-mounted radio frequency label when the train passes, so as to obtain the train identifier stored in the vehicle-mounted radio frequency label, and sending the read train identifier to the positioning unit, so that the positioning unit obtains the target position where the rail-side antenna device is located and obtains, according to the target position, train position information indicated by the train identifier. Because only the vehicle-mounted radio frequency label, the rail-side antenna device and the positioning unit are used in the positioning and costs of the vehicle-mounted radio frequency label and the rail-side antenna device are low, costs of positioning the train is reduced.

Description

Train positioning method, system and train interlocking device

Cross-reference to related applications

The present application claims the priority of the Chinese Patent Application No. "201611195739.8" filed on December 21, 2016 by BYD Co., Ltd., entitled "Locating Method and System for Trains".

Technical field

The present invention relates to the field of vehicle control technologies, and in particular, to a method and system for positioning a train and an interlock device for a train.

Background technique

The position information of the train has a very important position in the automatic train control technology. The implementation of almost every function requires the position information of the train as one of the parameters. For example, in the automatic train protection system (ATP), the speed curve must be calculated based on the position information of the train, or even the basis for opening the door and the screen door after the train stops at the station.

In the prior art, the number of the axles of the vehicle is often counted by means of a closed-loop sensor mounted on the rail, and the occupancy of the closed loop sensor at both ends of the section is compared to obtain the occupancy of the section and determine the position of the train. .

However, this method requires not only the installation of the axle counting sensor at both ends of the section, but also the design of the shaft cable and the indoor axle counting mainframe connected to the axle counting cable, etc., which is costly.

Summary of the invention

The present invention aims to solve at least one of the technical problems in the related art to some extent.

To this end, a first object of the present invention is to provide a positioning system for a train that reduces the cost of positioning the train.

In order to achieve the above object, an embodiment of the first aspect of the present invention provides an interlock device for a train, comprising: a trackside antenna device disposed beside a track on which the train travels, for reading the train when the train passes by The vehicle radio frequency tag obtains the train identifier stored in the vehicle radio frequency tag, and transmits the read train identifier; the positioning unit is configured to receive the train identifier sent by the trackside antenna device, and acquire the trackside antenna The target location where the device is located, and the location information of the train indicated by the train identification is obtained according to the target location.

The interlocking device of the train of the embodiment of the invention comprises: a trackside antenna device and a positioning unit. Wherein, the trackside antenna device is disposed beside the track on which the train travels, and is used to read the train radio frequency tag of the train to obtain the train identification stored in the vehicle radio frequency tag when the train passes, and send the read train identification to Positioning unit, so that the target position where the trackside antenna device is located is obtained by the positioning unit, and the position information of the train indicated by the train identification is obtained according to the target position. Since only the vehicle radio frequency tag, the trackside antenna device and the positioning unit are used in positioning, the cost of the vehicle radio frequency tag and the track side antenna device is low, thereby reducing the cost of positioning the train.

A second aspect of the present invention provides a positioning system for a train, the system comprising: an in-vehicle radio frequency tag attached to a body of the train for storing a train identification of the train; as in the first aspect of the present invention The interlocking device of the train is configured to confirm the position information of the train according to the train identification of the train.

The positioning system of the train of the embodiment of the invention comprises: a vehicle radio frequency tag and an interlock device. Wherein, the vehicle radio frequency tag is attached to the body of the train for storing the train identification of the train, and the interlocking device is configured to confirm the position information of the train according to the train identification of the train. Wherein, the trackside antenna device in the interlock device is disposed beside the track on which the train travels, and is used to read the train radio frequency tag of the train to obtain the train identifier stored in the vehicle radio frequency tag when the train passes, and send the read The train is identified to the positioning unit, so that the target position of the trackside antenna device is obtained by the positioning unit, and the position information of the train indicated by the train identification is obtained according to the target position. Since only the vehicle radio frequency tag, the trackside antenna device and the positioning unit are used in positioning, the cost of the vehicle radio frequency tag and the track side antenna device is low, thereby reducing the cost of positioning the train.

In order to achieve the above object, a third aspect of the present invention provides a method for positioning a train, the method comprising the following steps:

Reading the onboard radio frequency tag of the train when the train passes the trackside antenna device, and obtaining the train identification stored in the onboard radio frequency tag;

Receiving the train identifier, acquiring a target location where the trackside antenna device is located, and obtaining position information of the train indicated by the train identifier according to the target location.

The additional aspects and advantages of the invention will be set forth in part in the description which follows.

DRAWINGS

The above and/or additional aspects and advantages of the present invention will become apparent and readily understood from

Figure 1 is a prior art axle counting system;

2 is a schematic view of an interlocking device of a train according to an embodiment of the present invention;

3 is a schematic diagram of a positioning system of a train according to an embodiment of the present invention;

4 is a schematic structural view of a trackside antenna device 20;

Figure 5 is a schematic diagram of interaction of a positioning system;

FIG. 6 is a schematic flowchart diagram of a method for positioning a train according to an embodiment of the present invention.

detailed description

The embodiments of the present invention are described in detail below, and the examples of the embodiments are illustrated in the drawings, wherein the same or similar reference numerals are used to refer to the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the drawings are intended to be illustrative of the invention and are not to be construed as limiting.

Moreover, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" and "second" may include one or more of the features either explicitly or implicitly. In the description of the present invention, the meaning of "a plurality" is two or more unless specifically and specifically defined otherwise.

Any process or method description in the flowcharts or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a particular logical function or process. And the scope of the preferred embodiments of the invention includes additional implementations, in which the functions may be performed in a substantially simultaneous manner or in an opposite order depending on the functions involved, in the order shown or discussed. It will be understood by those skilled in the art to which the embodiments of the present invention pertain.

Generally, as shown in FIG. 1 , in the prior art axle counting system, the closed-loop sensor mounted on the rail is used to supervise the train wheel pair passing number, and the wheel pair of the station is detected after passing through the indoor microcomputer system and the door detecting. The number is sent to the other station by the semi-automatic device. When the train arrives at the other station, the other station automatically opens the interval when the number of rounds is the same as that of the station. In other words, it is a railway signal device that can detect the passing of the wheel. It can be seen that this method not only needs to install the axle counting sensor at both ends of the section, but also needs to lay the design shaft cable and the indoor axle counting host connected with the axle counting cable, etc., and the cost is high.

An interlocking device for a train according to an embodiment of the present invention will be described below with reference to the drawings.

2 is a schematic diagram of an interlocking device for a train according to an embodiment of the present invention. As shown in FIG. 2, the interlocking device of the train includes a trackside antenna device 20 and a positioning unit 30.

The trackside antenna device 20 is disposed beside the track on which the train travels, for reading the onboard radio frequency tag 10 of the train when the train passes, obtaining the train identification stored in the onboard radio frequency tag 10, and transmitting The train identification read.

a positioning unit 30, configured to receive a train identifier sent by the trackside antenna device 20, acquire a target location where the trackside antenna device 20 is located, and obtain a position of the train indicated by the train identifier according to the target location information.

The radio frequency tag 10 for radio frequency identification, also known as radio frequency identification, is a communication technology that can identify a specific target by radio signals and read and write related data without establishing a mechanical or optical relationship between the system and a specific target. contact.

The trackside antenna device 20 is a plurality of tracks distributed around the train, and can be read by radio frequency to the train identification stored in the radio frequency tag 10.

Therefore, after receiving the train identification sent by the trackside antenna device 20, the positioning unit 30 acquires the target position where the trackside antenna device 20 is located, and locates the train indicated by the train identification to the acquired target position to obtain the position of the train. information.

A positioning system for a train according to an embodiment of the present invention will be described below with reference to the drawings.

3 is a schematic diagram of a positioning system of a train according to an embodiment of the present invention. As shown in FIG. 3, the positioning system of the train includes an in-vehicle radio frequency tag 10 and an interlocking device for the train.

The vehicle radio frequency tag 10 is attached to the body of the train for storing the train identification of the train.

Wherein, the interlocking device of the train is used to confirm the position information of the train according to the train identification of the train. The interlocking device includes a trackside antenna device 20 and a positioning unit 30.

After receiving the train identifier sent by the trackside antenna device 20, the positioning unit 30 acquires the target position where the trackside antenna device 20 is located, and locates the train indicated by the train identifier to the acquired target position, and obtains the position information of the train. .

It can be seen that the positioning system in this embodiment is attached to the body of the train through the vehicle radio frequency tag, and is used for storing the train identification of the train. The trackside antenna device in the interlock device is disposed beside the track on which the train travels, and is used in the train. After passing, the vehicle radio frequency tag of the train is read to obtain the train identification stored in the vehicle radio frequency tag, and the read train identification is sent to the positioning unit, so that the positioning position of the trackside antenna device is obtained by the positioning unit. And obtaining the position information of the train indicated by the train identification according to the target position. Since only the vehicle radio frequency tag, the trackside antenna device and the positioning unit are used in positioning, the cost of the vehicle radio frequency tag and the track side antenna device is low, thereby reducing the cost of positioning the train.

In order to clearly illustrate the above embodiments, the embodiment of the present invention further provides a possible installation method of the vehicle-mounted radio frequency tag 10 in the positioning system of the train based on the previous embodiment.

The in-vehicle radio frequency tag 10 includes a first in-vehicle radio frequency tag attached to a front position of the train and a second in-vehicle radio frequency tag attached to a rear position of the train, a first in-vehicle radio frequency tag 10 and a second in-vehicle radio frequency tag 10 mutual redundancy.

In this embodiment, the in-vehicle radio frequency tag 10 is a passive tag. Of course, in actual use, those skilled in the art may think that the in-vehicle radio frequency tag 10 may also use an active tag, which does not affect the implementation effect of the embodiment of the present invention.

Further, the embodiment of the present invention further provides a trackside antenna device 20 based on the previous embodiment, and FIG. 4 is a schematic structural diagram of the trackside antenna device 20. As shown in FIG. 4, the trackside antenna device 20 includes An RF antenna 21, and an acquisition module 22 coupled to the RF antenna 21.

The radio frequency antenna 21 is for transmitting and receiving electromagnetic signals.

The acquisition module 22 is configured to decode the electromagnetic signal received by the radio frequency antenna 21, obtain a train identifier carried by the electromagnetic signal, and send the train identifier to the positioning unit 30.

It should be noted that when the vehicle radio frequency tag 10 selects an active tag, the radio frequency antenna of the trackside antenna device 20 can receive only the electromagnetic signal. The main operating frequencies of the electromagnetic signals here are low frequency 125KHZ, high frequency 13.56MHZ, ultra high frequency 433MHZ and ultra high frequency 915MHZ.

Because radio frequency identification is non-contact identification, and can penetrate the harsh environment of snow, fog, ice, paint, dirt and barcodes, the reading label is extremely fast, specifically, in most cases less than 100 milliseconds, The mobile reading speed is 60 km/s and the storage capacity is approximately several megabytes. Therefore, it is possible to meet the application scenario requirements of the positioning of the train.

At the same time, the general purchase price of the radio frequency tag is relatively low. It can be seen that in the embodiment, the vehicle radio frequency tag is attached to the body of the train for storing the train identification of the train, and the trackside antenna device is disposed beside the track on which the train travels. When the train passes, the vehicle radio frequency tag attached to the body of the train is read, the train identification stored in the vehicle radio frequency tag is obtained, and the read train identification is sent to the positioning unit, so that the positioning unit acquires the The target position where the trackside antenna device is located, the train indicated by the train identification is located at the target position that is queried, and the position information of the train is obtained. Since only the vehicle radio frequency tag, the trackside antenna device and the positioning unit are used in positioning, the cost of the vehicle radio frequency tag and the track side antenna device is low, thereby reducing the cost of positioning the train.

Further, when the vehicle-mounted radio frequency tag 10 includes a first vehicle-mounted radio frequency tag attached to the front position of the train and a second vehicle-mounted radio frequency tag attached to the rear position of the train, the acquisition module 22 is specifically configured to:

Decoding the electromagnetic signal received by the radio frequency antenna 21 to obtain the train identification stored by the first vehicle radio frequency tag 10, and the train identification stored by the second vehicle radio frequency tag 10; The train identifications are compared and verified to determine the train identification of the train.

Specifically, when the two trains are identical in identity, the train identification is output. When the two train identifications are different, the train identification is re-read, or the read train identification error is prompted.

Further, the trackside antenna device 20 further includes a communication interface 23.

The acquisition module 22 transmits the train identification of the train to the positioning unit 30 via the communication interface 23.

Specifically, the communication interface 23 is specifically a CAN interface, and CAN is an abbreviation of Controller Area Network, which is an international standardized serial communication protocol.

In order to clearly explain the interaction process between the positioning system of the train and the existing control systems of the train provided by the embodiments of the present invention, an embodiment of the present invention provides a possible application scenario, and FIG. 5 is a schematic diagram of interaction of the positioning system.

As shown in FIG. 5, the trackside antenna device 20 and the positioning unit 30 are disposed inside the interlocking device (CI) of the train.

The positioning unit 30 is configured to receive the train identifier sent by the trackside antenna device 20, and query the electronic map by the area controller to obtain a target location where the trackside antenna device is located, and indicate the train identifier The train is positioned at the acquired target position to obtain position information of the train.

Further, there are a plurality of track side antenna devices 20, and the positioning unit 30 locates a plurality of target positions of the plurality of track side antenna devices 20. Since the same train may be in a range that can be read by a plurality of trackside antenna devices 20 at the same time, the interlocking device can simultaneously position a plurality of target positions of the plurality of trackside antenna devices 20 by the positioning unit 30.

Based on this, the positioning unit 30 is further configured to perform error analysis according to the obtained plurality of target positions of the plurality of trackside antenna devices 20 to obtain position information of the train.

Here, when the error analysis is performed, the running speed of the train, the time difference of the radio frequency tag 10 read by each trackside antenna device 20, and the like can be considered, and error analysis is performed on a plurality of target positions, thereby locating the exact position where the train is actually located as a train. Location information.

Further, the interlock device performs error analysis on a plurality of target positions to locate the exact position where the train is actually located. After being used as the position information of the train, the interlock device can also be used to: send the position information of the train to the control center (ATS). In order to have the control center send location information to the onboard equipment (VOBC) of the train and/or the adjacent train of the train.

In summary, the positioning system of the train of the embodiment of the invention includes: a vehicle radio frequency tag and an interlock device. The interlock device includes a trackside antenna device and a positioning unit. Wherein, the vehicle radio frequency tag is attached to the body of the train for storing the train identification of the train, and the trackside antenna device is arranged beside the track where the train travels, and is used for reading the on-board radio frequency tag of the train to obtain the vehicle radio frequency tag when the train passes by. The train identifier stored therein, and transmitting the read train identifier to the positioning unit, so that the target position of the trackside antenna device is obtained by the positioning unit, and the position information of the train indicated by the train identifier is obtained according to the target position. . Since only the vehicle radio frequency tag, the trackside antenna device and the positioning unit are used in positioning, the cost of the vehicle radio frequency tag and the track side antenna device is low, thereby reducing the cost of positioning the train.

In order to clearly illustrate the positioning system provided by the foregoing embodiment, the present embodiment provides a positioning method. FIG. 6 is a schematic flowchart of a method for positioning a train according to an embodiment of the present invention. As shown in FIG. step:

Step 501: Read a vehicle radio frequency tag of the train when the train passes the trackside antenna device, and obtain a train identifier stored in the vehicle radio frequency tag.

As a possible implementation manner, the vehicle-mounted radio frequency tags are respectively attached to the front position of the train and the rear position of the train, and the vehicle-mounted radio frequency tag at the front position and the vehicle-mounted radio frequency tag at the rear position are mutually redundant. The trackside antenna device obtains the train identification stored by the vehicle radio frequency tag of the front position of the train, and the train identification stored by the vehicle radio frequency tag at the rear position, and performs comparison verification according to the read two train identifications. Determining the train identification of the train. Specifically, when the two train identifiers read are the same, the train identifier is output, and when the two train identifiers read are different, the vehicle identifier is re-read, or the train train identifier is prompted to be erroneous.

Step 502: Receive the train identifier, acquire a target location where the trackside antenna device is located, and obtain location information of the train indicated by the train identifier according to the target location.

Further, as a possible implementation manner, when there are multiple target positions, after step 502, the positioning unit performs error analysis according to the obtained plurality of target positions to obtain position information of the train.

Specifically, there may be multiple track-side antenna devices, so that the plurality of target positions of the plurality of track-side antenna devices are located. Since the same train may be in a range that can be read by a plurality of trackside antenna devices at the same time, the positioning unit can simultaneously locate a plurality of target positions of the plurality of trackside antenna devices corresponding to the same train. The positioning unit performs error analysis according to the obtained plurality of target positions to obtain position information of the train.

Here, when the error analysis is performed, the running speed of the train and the time difference of the radio frequency tag read by each trackside antenna device can be considered, and error analysis is performed on a plurality of target positions, thereby locating the exact position of the train as the position of the train. information.

Further, the positioning unit transmits location information of the train to a control center; the control center transmits the location information to an in-vehicle device of the train and/or an in-vehicle device of an adjacent train of the train.

In this embodiment, the trackside antenna device disposed beside the track on which the train travels reads the on-board radio frequency tag of the train when the train passes, obtains the train identification stored in the vehicle radio frequency tag, and displays the train that is read. The identifier is sent to the positioning unit, so that the positioning unit queries the target location where the trackside antenna device is located, and obtains the position information of the train indicated by the train identification. Since only the vehicle radio frequency tag, the trackside antenna device and the positioning unit are used in positioning, the cost of the vehicle radio frequency tag and the track side antenna device is low, thereby reducing the cost of positioning the train.

It should be understood that portions of the invention may be implemented in hardware, software, firmware or a combination thereof. In the above-described embodiments, multiple steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented by any one or combination of the following techniques well known in the art: having logic gates for implementing logic functions on data signals. Discrete logic circuits, application specific integrated circuits with suitable combinational logic gates, programmable gate arrays (PGAs), field programmable gate arrays (FPGAs), etc.

In the present invention, the terms "installation", "connected", "connected", and the like are to be understood broadly, and may be either a fixed connection or a detachable connection, or Integral; may be mechanically connected or electrically connected; may be directly connected, or may be indirectly connected through an intermediate medium, and may be internal communication of two elements or an interaction relationship of two elements unless explicitly defined otherwise. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

In the description of the present specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like means a specific feature described in connection with the embodiment or example. A structure, material or feature is included in at least one embodiment or example of the invention. In the present specification, the schematic representation of the above terms is not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, various embodiments or examples described in the specification, as well as features of various embodiments or examples, may be combined and combined.

Although the embodiments of the present invention have been shown and described, it is understood that the above-described embodiments are illustrative and are not to be construed as limiting the scope of the invention. The embodiments are subject to variations, modifications, substitutions and variations.

Claims

An interlock device for a train, comprising:

The trackside antenna device is disposed beside the track on which the train travels, and is configured to read the train radio frequency tag of the train to obtain the train identifier stored in the vehicle radio frequency tag when the train passes, and send the read train Identification

And a positioning unit, configured to receive a train identifier sent by the trackside antenna device, obtain a target location where the trackside antenna device is located, and obtain position information of the train indicated by the train identifier according to the target location.
The interlock device according to claim 1, wherein

The positioning unit is further configured to query the electronic map by the area controller to obtain a target location where the trackside antenna device is located.
The interlock device according to claim 1 or 2, wherein the number of the trackside antenna devices is plural.

The positioning unit is further configured to:

Based on the acquired plurality of target positions of the plurality of trackside antenna devices, error analysis is performed to obtain position information of the train.
The interlock device according to any one of claims 1 to 3, further comprising:

a transmitting device, configured to send location information of the train to a control center; wherein the control center is configured to send the location information to an in-vehicle device of the train and/or an adjacent train of the train Car Equipment.
The interlock device according to any one of claims 1 to 4, wherein the trackside antenna device comprises:

An RF antenna for receiving electromagnetic signals;

An acquisition module, configured to decode an electromagnetic signal received by the radio frequency antenna, obtain a train identifier carried by the electromagnetic signal, and send the train identifier to the positioning unit.
The interlock device according to claim 5, wherein said vehicle radio frequency tag comprises a first vehicle radio frequency tag attached to a front position of said train and a second car attached to a rear position of said train The vehicle radio frequency tag, the first vehicle radio frequency tag and the second car radio frequency tag are mutually redundant, and the acquisition module is configured to:

Decoding the electromagnetic signal received by the radio frequency antenna to obtain a train identifier stored by the first vehicle radio frequency tag, and a train identifier stored by the second vehicle radio frequency tag;

The train identification of the train is determined based on two train identifications.
The interlocking device according to any one of claims 1 to 6, wherein the trackside antenna device further comprises:

a communication interface, the trackside antenna device transmitting a train identification of the train to the positioning unit via the communication interface.
A positioning system for a train, characterized in that the system comprises:

a vehicle radio frequency tag attached to the body of the train for storing the train identification of the train;

The interlock device according to any one of claims 1 to 7, for confirming position information of the train based on the train identification of the train.
The positioning system of claim 8 wherein said in-vehicle radio frequency tag is a passive tag or an active tag.
A method for positioning a train, characterized in that the method comprises the following steps:

Reading a vehicle radio frequency tag of the train when the train passes the trackside antenna device, and obtaining a train identifier stored in the vehicle radio frequency tag;

Receiving the train identifier, acquiring a target location where the trackside antenna device is located, and obtaining position information of the train indicated by the train identifier according to the target location.
The method for positioning a train according to claim 10, wherein the acquiring a target position of the trackside antenna device is specifically:

The area controller queries the electronic map to obtain the target location where the trackside antenna device is located.
The method for positioning a train according to claim 10 or 11, wherein when the number of the trackside antenna devices is plural, the method further includes:

The positioning unit performs error analysis according to the acquired plurality of target positions of the plurality of trackside antenna devices to obtain position information of the train.
The method for locating a train according to any one of claims 10 to 12, wherein after the obtaining the location information of the train, the method further comprises:

The positioning unit sends location information of the train to a control center;

The control center transmits the location information to an in-vehicle device of the train and/or an in-vehicle device of an adjacent train of the train.