CN116409361A

CN116409361A - Grating-based TACS system boundary intrusion detection method and device

Info

Publication number: CN116409361A
Application number: CN202211484922.5A
Authority: CN
Inventors: 徐海贵; 汪小勇; 凌小雀; 高�豪; 王磊
Original assignee: Casco Signal Ltd
Current assignee: Casco Signal Ltd
Priority date: 2022-11-24
Filing date: 2022-11-24
Publication date: 2023-07-11

Abstract

The invention relates to a grating-based TACS system boundary intrusion detection method and a device, wherein when an illegal train intrudes into a TACS zone, the method can be detected by a grating group arranged at the boundary of the TACS zone, thereby carrying out safety protection on a TACS boundary section. Compared with the prior art, the invention has the advantages of greatly reducing the quantity of the equipment beside the system track, the construction cost and the maintenance workload, shortening the reconstruction of the old line and the construction period of the new line, improving the competitiveness and the flexibility of the system and the like.

Description

Grating-based TACS system boundary intrusion detection method and device

Technical Field

The invention relates to a train signal control system, in particular to a boundary intrusion detection method and device of a TACS system based on grating.

Background

Compared with the traditional CBTC system, the train autonomous operation system (TACS system) based on train-to-train communication takes a train as a core, and the train autonomously calculates the movement authorization, and the TACS system essentially transfers the trackside core control function of the traditional CBTC system to the train, optimizes the system architecture, reduces the quantity of trackside equipment, and obviously reduces the equipment maintenance workload.

However, since the TACS system greatly simplifies the trackside equipment, the TACS system lacks an effective detection means to learn about the intrusion of an unknown train at the TACS boundary, so in the TACS system, how to detect the illegal intrusion of the unknown train is a great challenge.

In the traditional CBTC system, the safety protection of a degraded train or a non-communication train depends on the detection of the track occupation to a large extent, the main track occupation detection means comprise a track circuit and a metering shaft based on an electromagnetic induction technology, the track circuit is affected by bad branching to cause low reliability, and a large amount of cables are required to be laid, so that the construction and maintenance costs are high; the axle counting system relies on the rim to detect train occupation through the electromagnetic induction of the magnetic head, is easy to be subjected to electromagnetic interference, is low in reliability, and is complex in installation process of an outdoor magnetic head of the axle counting system, a large number of cables are required to be arranged, and construction cost and maintenance cost are high.

Therefore, how to independently detect the invasion of an illegal train at the boundary of the TACS area becomes a technical problem to be solved.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a method and a device for detecting TACS system boundary intrusion based on grating.

The aim of the invention can be achieved by the following technical scheme:

according to a first aspect of the present invention, there is provided a grating-based TACS system boundary intrusion detection method, which can detect an illegal train intrusion into a TACS zone by a grating group installed at a TACS zone boundary, thereby performing security protection on a TACS boundary section.

As a preferred technical solution, the method comprises the steps of:

step S101, after the grating group is powered on or restarted, the grating group is in a state to be tested after the power on is successful;

step S102, testing the grating group, judging whether the test is passed, if yes, executing step S103, otherwise, considering that the grating group has faults;

step S103, the grating group is in a normal working state and performs self-test regularly;

step S104, the grating group carries out intrusion detection on the boundary of the TACS area in real time, judges whether the boundary is shielded, if yes, carries out step S105, otherwise considers that the grating group is in an out-of-clear state;

step S105, if the grating group is in the blocked state, a train is considered to enter the TACS zone boundary.

As a preferable technical solution, the testing process in step S102 specifically includes:

sending a test command to the grating group through the WRC and the target controller OC, diagnosing whether the fault occurs according to the feedback of the grating group, and if the fault does not occur, considering that the grating group is available and is in a normal working state; otherwise, when the test fails, the grating group is considered to be faulty, and the state of the grating group is fed back to the intelligent operation and maintenance system IOM and the train automatic monitoring system ATS through the WRC.

As a preferable technical solution, the self-test of the grating group in step S103 is used to ensure that the fault of the grating group is diagnosed in time, and prompt whether the grating group is in a normal working state.

As a preferred technical solution, the method further includes:

step S106, if the train has applied for entering to the trackside resource manager WRC before entering the boundary of the TACS zone, the WRC considers the grating group to be in a legal occupancy state.

As a preferred technical solution, the method further includes:

in step S107, if the train does not send an entry request to the WRC before entering the TACS zone boundary, the WRC considers that the grating group is illegally occupied, and the WRC performs security protection on the TACS zone boundary.

According to a second aspect of the present invention, there is provided an apparatus for the grating-based TACS system boundary intrusion detection method, the TACS system including a trackside resource manager WRC, a trackside train controller WTC, a target controller OC, a train automatic monitoring system ATS, a vehicle-mounted controller CC, an intelligent operation and maintenance system IOM, and a transponder Beacon, the apparatus including a grating group for acquiring section occupancy information of a train, and when a grating group signal is blocked, it is considered that a train occupies a TACS zone boundary.

As a preferred solution, the grating group is arranged at the boundary of the non-TACS region and the TACS region.

As an optimal technical scheme, the grating group is a grating group based on the 2oo3 principle.

As a preferable technical scheme, the grating group comprises 3 pairs of grating induction sensors, and when at least two pairs of grating induction sensors are detected to be shielded, the system considers that a train enters the TACS area.

According to a third aspect of the present invention there is provided an electronic device comprising a memory and a processor, the memory having stored thereon a computer program, the processor implementing the method when executing the program.

According to a fourth aspect of the present invention there is provided a computer readable storage medium having stored thereon a computer program which when executed by a processor implements the method.

Compared with the prior art, the invention has the following advantages:

1) According to the invention, under the condition that complex trackside equipment such as a shaft counting circuit or a track circuit is not required to be arranged, the invasion of an illegal train in the boundary of a TACS zone is independently detected by arranging the grating group at the boundary, so that the quantity, construction cost and maintenance workload of the trackside equipment of the system are greatly reduced, the reconstruction period of an old line and the construction period of a new line are shortened, and the competitiveness and flexibility of the system are improved.

2) The invention is a detection system which does not depend on the track and the wheels, can be detected as long as the train invades the TACS region, adopts a relatively simple optical principle, has excellent electromagnetic interference resistance, provides a simple and reliable scheme for detecting illegal invasion of the TACS region boundary train, simplifies the structure of the system and improves the stability of the system.

3) The invention designs a set of grating groups based on the 2oo3 principle, which are used for detecting the boundary of an illegal train intrusion TACS zone, and the design of the grating groups not only ensures the safety of boundary detection, but also provides redundancy, thereby completely meeting the requirement of a TACS system on boundary intrusion detection.

Drawings

FIG. 1 is a block diagram of a grating-based TACS system;

FIG. 2 is a flowchart of a method of detecting boundary intrusion of a grating-based TACS system;

FIG. 3 is a schematic diagram of a grating placement at the boundary of a TACS region;

FIG. 4 is a schematic diagram of boundary intrusion detection of a grating-based TACS system;

FIG. 5 is a schematic diagram of a grating set structure;

fig. 6 is a schematic diagram of boundary intrusion detection interface information of a grating-based TACS system.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.

The boundary intrusion detection method of the TACS system based on the grating utilizes a set of redundant grating groups to detect train occupation. After the grating group is electrified, the grating group is required to be subjected to an initialization test to confirm that the grating group is in a normal working state and can be used for train occupation detection, and meanwhile, the grating group is required to be subjected to a timing test in consideration of the random failure of the grating so as to diagnose the failure of the grating group in time; when the grating group works normally, if a train passes through the grating group, the signals of the grating group are shielded, so that the train occupation can be detected, and occupation information is sent to the WRC through the OC to be used for carrying out TACS system boundary intrusion detection and protection;

the workflow of the boundary intrusion detection method of the TACS system based on the grating is shown in the figure 2:

step S102, a test command is sent to the grating group through the WRC and the OC, whether the fault occurs is diagnosed according to the feedback of the grating group, and if the fault does not occur, the grating group is considered to be available and is in a normal working state; otherwise, when the test fails, the grating group is considered to be faulty, and the state of the grating group is fed back to the IOM and the ATS through the WRC.

Step S103, after the initialization test is passed, the grating group is in a normal working state, and the self-test is performed regularly, so that the fault of the grating group is ensured to be diagnosed in time, and whether the grating group is in the normal working state is prompted;

step S104, the grating group performs intrusion detection on the boundary of the TACS area in real time, and if the grating group is not shielded, the grating group is considered to be in a clear state;

step S105, if the grating group is in a shielded state, a train is considered to enter the TACS zone boundary;

step S106, if the train has applied for entering to the WRC before entering to the boundary of the TACS zone, the WRC considers the grating group to be in a legal occupation state, and belongs to the normal operation of the train.

In step S107, if the train does not send an entry request to the WRC before entering the TACS zone boundary, the WRC considers that the grating group is illegally occupied, and the WRC performs security protection on the TACS zone boundary, thereby ensuring operation security of the TACS system.

The above description of the method embodiments further describes the solution of the present invention by means of device embodiments.

As shown in fig. 1, the train autonomous operation system based on the train-to-train communication mainly comprises a trackside resource manager WRC, a trackside train controller WTC, a target controller OC, a train automatic monitoring system ATS, a vehicle-mounted controller CC, an intelligent operation and maintenance system IOM, a transponder Beacon and a grating group OBS. The ATS subsystem of the automatic train monitoring system is responsible for supervising and controlling the operation of the train and has the functions of train tracking operation, alarming and event reporting, operation adjustment, operation control and the like; the trackside resource manager WRC is responsible for the functions of line resource allocation and recovery, train sequence management and the like; the trackside train controller WTC is mainly responsible for managing and tracking a fault train, taking over the fault train to apply and release resources, and interacting with an adjacent train; the target controller OC mainly realizes the state acquisition and driving of the trackside equipment; the vehicle-mounted controller CC performs line resource request and release according to a plan, and actively performs train control, so as to realize a train safety protection function and a train automatic driving function; the transponder is responsible for providing the line position information where the transponder is located in combination with the line map; the grating group OBS is mainly used for acquiring section occupation information of a train, and when a grating group signal is blocked, the train is considered to occupy a TACS zone boundary.

As shown in fig. 3, in the boundary intrusion detection scheme of the grating-based TACS system, the grating group is disposed at the boundary between the non-TACS area and the TACS area, when any train enters the TACS area, the grating group OBS is blocked, and according to the information provided by the OBS subsystem, the TACS system can determine whether an illegal train enters the TACS area, so as to protect the train.

The boundary intrusion detection principle of the grating-based TACS system is shown in fig. 4, when the train T1 does not enter the TACS zone, the grating group OBS is not shielded, and the TACS entrance section is in an out-of-clear state; when the train T1 partially enters the TACS zone, the grating group OBS is shielded, and the TACS entrance section is in an occupied state; when the train T1 completely enters the TACS zone, the grating group is not shielded, and the TACS entrance section is in a clear state;

because the TACS system of the invention is not provided with detection equipment such as a shaft counting circuit or a track circuit, and the like, but is based on the detection of the boundary of the TACS area of the train intrusion of the grating group, when the TACS area of the illegal train intrusion exists, the system can carry out protection processing, but the illegal train intrusion is wrongly judged to cause poor availability of the system, so in order to ensure the availability and the safety of the system, the invention designs a grating group based on the 2oo3 principle, as shown in figure 5, the grating group consists of 3 grating induction sensors OB, when at least 2 grating induction sensors OB are detected, the system considers that a train enters the TACS area, and therefore, when 1 grating induction sensors fail, the normal use of the system is not influenced, in addition, when certain grating induction sensors fail, no shielding information is provided, other grating induction sensors can work normally, and grating shielding information is provided, so the safety of the boundary detection of the system is ensured to a certain extent;

the interfaces of the TACS system boundary intrusion detection system based on the grating are shown in fig. 6, and mainly relate to interfaces among subsystems such as a trackside resource manager WRC, a trackside train controller WTC, a target controller OC, a train automatic monitoring system ATS, a vehicle-mounted controller CC, an intelligent operation and maintenance system IOM, a grating group OBS and the like; after the grating group is electrified successfully, the WRC sends a grating group test command to the OBS through the OC, the OBS tests according to the test command, and feeds back a test result to the WRC and the ATS through the OC, and if the test is not passed, alarm information is sent to the IOM so as to facilitate maintenance personnel to maintain the grating group in time; when the TACS system works normally, the ATS sends an operation task to the train controller xTC (CC/WTC), xTC applies for legal entering of the TACS to the WRC according to the operation task, when the train is legal entering of the TACS, the system considers that the train is legal entering of the train, the train is allowed to enter the TACS zone at the boundary, but illegal entering protection is carried out on the train illegally entering the TACS zone, and therefore safety of the boundary of the TACS system is guaranteed.

The boundary intrusion detection workflow and interface information of the TACS system are shown in table 1:

TABLE 1

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the described modules may refer to corresponding procedures in the foregoing method embodiments, which are not described herein again.

The electronic device of the present invention includes a Central Processing Unit (CPU) that can perform various appropriate actions and processes according to computer program instructions stored in a Read Only Memory (ROM) or computer program instructions loaded from a storage unit into a Random Access Memory (RAM). In the RAM, various programs and data required for the operation of the device can also be stored. The CPU, ROM and RAM are connected to each other by a bus. An input/output (I/O) interface is also connected to the bus.

A plurality of components in a device are connected to an I/O interface, comprising: an input unit such as a keyboard, a mouse, etc.; an output unit such as various types of displays, speakers, and the like; a storage unit such as a magnetic disk, an optical disk, or the like; and communication units such as network cards, modems, wireless communication transceivers, and the like. The communication unit allows the device to exchange information/data with other devices via a computer network, such as the internet, and/or various telecommunication networks.

The processing unit performs the respective methods and processes described above, for example, the methods S101 to S107. For example, in some embodiments, methods S101-S107 may be implemented as a computer software program tangibly embodied on a machine-readable medium, such as a storage unit. In some embodiments, part or all of the computer program may be loaded and/or installed onto the device via the ROM and/or the communication unit. When the computer program is loaded into RAM and executed by the CPU, one or more steps of the methods S101 to S107 described above may be performed. Alternatively, in other embodiments, the CPU may be configured to perform methods S101-S107 by any other suitable means (e.g., by means of firmware).

The functions described above herein may be performed, at least in part, by one or more hardware logic components. For example, without limitation, exemplary types of hardware logic components that may be used include: a Field Programmable Gate Array (FPGA), an Application Specific Integrated Circuit (ASIC), an Application Specific Standard Product (ASSP), a system on a chip (SOC), a Complex Programmable Logic Device (CPLD), and the like.

Program code for carrying out methods of the present invention may be written in any combination of one or more programming languages. These program code may be provided to a processor or controller of a general purpose computer, special purpose computer, or other programmable data processing apparatus such that the program code, when executed by the processor or controller, causes the functions/operations specified in the flowchart and/or block diagram to be implemented. The program code may execute entirely on the machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.

In the context of the present invention, a machine-readable medium may be a tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. The machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. The machine-readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

While the invention has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and substitutions of equivalents may be made and equivalents will be apparent to those skilled in the art without departing from the scope of the invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.

Claims

1. A boundary intrusion detection method of a TACS system based on gratings is characterized in that when an illegal train intrudes into a TACS zone, the method can be detected by a grating group arranged at the boundary of the TACS zone, thereby carrying out safety protection on a TACS boundary section.

2. The grating-based TACS system boundary intrusion detection method of claim 1, comprising the steps of:

3. The method for detecting boundary intrusion of grating-based TACS system according to claim 2, wherein the testing procedure of step S102 specifically comprises:

4. The method for detecting boundary intrusion of a grating-based TACS system according to claim 2, wherein the self-test of the grating group in step S103 is used for ensuring timely diagnosis of a failure of the grating group and prompting whether the grating group is in a normal working state.

5. The grating-based TACS system boundary intrusion detection method of claim 2, further comprising:

6. The grating-based TACS system boundary intrusion detection method of claim 2, further comprising:

7. An apparatus for the grating-based TACS system boundary intrusion detection method of claim 1, wherein the TACS system comprises a trackside resource manager WRC, a trackside train controller WTC, a target controller OC, a train automatic monitoring system ATS, a vehicle-mounted controller CC, an intelligent operation and maintenance system IOM, and a transponder Beacon, and wherein the apparatus comprises a grating group for acquiring section occupancy information of a train, and when a grating group signal is blocked, it is considered that a train occupies a TACS zone boundary.

8. The apparatus of claim 7, wherein the grating sets are disposed at boundaries of non-TACS regions and TACS regions.

9. The apparatus of claim 7, wherein the set of gratings is a 2oo3 principle based set of gratings.

10. The apparatus of claim 7 or 9, wherein the grating set comprises 3 pairs of grating sensors, and the system considers that there is a train entering the TACS zone when at least two pairs of grating sensors are detected to be blocked.

11. An electronic device comprising a memory and a processor, the memory having stored thereon a computer program, characterized in that the processor, when executing the program, implements the method according to any of claims 1-6.

12. A computer readable storage medium, on which a computer program is stored, characterized in that the program, when being executed by a processor, implements the method according to any one of claims 1-6.