CN111740790A - A transponder with detection function - Google Patents

Abstract

The invention provides a transponder with a detection function, which is used in the field of rail transit and comprises a transponder unit circuit and a transponder detection unit circuit, wherein the integrated design of the transponder and a transponder detection device is realized under the condition of not changing the overall dimension of the existing standard transponder, the transponder has the function of the standard transponder, the real-time dynamic detection on the transponder can be realized, the implementation cost can be reduced, the transponder has a more convenient installation and maintenance mode, the risk that equipment beside a rail damages a train is reduced, and the transponder has important significance for ensuring the railway traffic safety.

Description

A transponder with detection function

technical field

The invention relates to the technical field of rail transit, in particular to a transponder with a detection function.

Background technique

The transponder is an important device in the rail transit control system. It is installed in the center of the track. When the train passes by, it sends message information to the on-board equipment of the train to control the safe operation of the train. Therefore, the working status and data information of the transponder are important.

At present, there are three main methods for detecting the transponder installed on the line. The first one uses a portable transponder detection device, and the transponder is detected manually at the scene; Install the transponder detection device near the detected transponder, and then transmit the detection information to the indoor detection host through a signal transmission cable or wireless transmission device. There are main problems in the above three schemes: the main problem of scheme 1 and scheme 2 is that the status of the transponder cannot be detected in real time, and the fault of the transponder cannot be detected in time. The reason for the failure: Scheme 3 is installed in a scattered manner, adding rail equipment, and there is a risk of equipment falling off and infringing on the train. The amount of equipment installation, construction and protection works is large, the equipment debugging and post-maintenance workload is large, and the overall investment and maintenance costs of the project are relatively high. .

SUMMARY OF THE INVENTION

Based on the above-mentioned shortcomings of the prior art, the purpose of the embodiments of the present invention is to provide a transponder with a detection function, which realizes the integrated design of the transponder and the detection device without changing the size of the existing standard transponder. It has both the standard transponder function and the real-time dynamic detection of the transponder, which can reduce the implementation cost, have a more convenient installation and maintenance method, and reduce the risk of rail equipment infringing on the train.

The present invention adopts the following technical solutions to realize:

A transponder with detection function, comprising a transponder unit and a transponder detection unit; the transponder unit comprises an A interface module, a C interface module, a main control module, a message processing module, an A5 interface module, and a storage module; The message processing module is connected with the C interface module and the main control module; the A interface module, the A5 interface module and the storage module are respectively connected with the main control module;

The transponder detection unit includes a detection interface module and a detection module; the detection module includes a power supply module, a detection control circuit, a safety reading control module, a detection receiving circuit, a detection transmission circuit, and a detection antenna; the detection interface module is connected to The detection control circuit is connected; the detection receiving circuit is connected with the detection control circuit and the detection antenna; the detection transmission circuit is connected with the detection control circuit and the detection antenna;

The power module is used to provide working power to the detection unit;

When the detection control circuit receives the detection command sent by the detection terminal, the detection and reception circuit is turned on, and the detection and transmission circuit is activated to transmit a 27MHz signal through the detection antenna to deactivate the transponder unit, and at the same time, the message information sent by the transponder unit is received through the detection antenna. , the detection control circuit parses the message and sends it to the detection terminal through the detection interface, and the detection terminal collates the message with the original message;

The safe reading control module is connected with the detection transmission circuit and the detection antenna, and is used for cutting off the excitation signal by hardware when the detection module CPU fails to realize the safe reading function;

In particular, when the detection control circuit receives a detection command, it first determines whether a train passes by at this time, and stops the detection if it is determined that a train passes, and starts detection if it is determined that no train passes.

Adopt the present invention of above-mentioned technical scheme, it has the following advantages:

(1) A transponder with a detection function of the present invention, on the premise of not changing the external dimensions of the standard transponder, in addition to the function of a conventional transponder, a transponder detection function is added;

(2) A transponder with a detection function of the present invention can detect the working status of the transponder from the target end position in advance, so as to achieve advance prediction, reduce the risk of parking due to the failure of the transponder, and minimize the maintenance cost. ;

(3) A transponder with a detection function of the present invention can transmit detection information to an indoor detection terminal, avoid personnel working on the road, reduce personnel safety risks and labor costs, improve detection efficiency, and facilitate data information. management.

Description of drawings

Fig. 1 is the application principle diagram of the present invention.

Figure 2 is a schematic diagram of the present invention.

FIG. 3 is a schematic diagram of the detection unit of the present invention.

Fig. 4 is the working flow chart of the detection unit of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention are described below with reference to the accompanying drawings, and the described embodiments are a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present invention.

This embodiment provides a transponder with a detection function used in a rail transit transponder system, which can communicate with a trackside electronic unit and send message information to on-board equipment, and can also receive and parse the transponder unit through its own detection unit The message information is transmitted to the indoor detection terminal, as shown in Figure 1 and Figure 2, the transponder specifically includes:

The transponder unit and the transponder detection unit are two parts, wherein the transponder detection unit circuit is independent of the transponder unit;

For the transponder unit, when the train passes by, the transponder unit receives the 27.095MHz power carrier energy sent by the antenna of the on-board message transmission system of the train to obtain the power supply, drives each unit inside the transponder to work, and transmits LEU messages to the on-board equipment cyclically. If there is no valid LEU message, the responder sends the pre-stored default message.

As shown in Figure 3, the above-mentioned transponder detection unit specifically includes: a detection interface module, a safe reading control module, a power supply module, a detection control circuit, a detection receiving circuit, a detection transmitting circuit, and a detection antenna; the detection interface module and the detection control The circuit is electrically connected for the transmission of detection commands and detection data;

The detection control circuit is used for detection instruction control and message parsing processing;

The detection receiving circuit is electrically connected with the detection control circuit and the detection antenna, and is used for receiving the transponder information and monitoring and controlling the 27MHz activation information;

The detection and emission circuit is electrically connected with the detection control circuit and the detection antenna, and is used for generating an activation energy signal;

The safe reading control module is electrically connected with the detection transmitting circuit and the detection antenna, and is used for ensuring the reading protection after the failure of the detection part of the CPU.

As shown in Figure 4, the detection part of the circuit in the transponder detection unit is usually in a dormant state. When the transponder needs to be detected, the transponder detection terminal installed in the room will send a command to control the detection module inside the transponder. The module judges whether there is a train passing by at this time according to the received information, and when it judges that no train passes, starts the transmitting circuit to activate the transponder unit, and transmits the acquired message information back to the detection terminal, and the transponder detects the terminal's response to the returned report. Check the text information and get a judgment result; when the detection control module judges that a train passes by, the unit stops starting the activation energy signal and enters a dormant state until the next detection command is received; the safety reading control module is used to detect After the CPU fails, the hardware cuts off the excitation signal to realize the safe reading function.

Claims (3)

1. A transponder with detection function, which has a transponder function and a transponder detection function, characterized in that the transponder with detection function comprises a transponder unit circuit and a transponder detection unit circuit.

2. A transponder with test function according to claim 1, wherein the transponder detection unit circuit is independent of the transponder unit circuit, and the transponder detection unit is capable of activating the transponder unit and receiving the transponder unit information in real time.

3. The transponder with detection function according to claim 1, wherein the transponder detection unit comprises a detection interface module, a detection module; the detection module comprises a power supply module, a safety reading control module, a detection control circuit, a detection receiving circuit, a detection transmitting circuit and a detection antenna;

the detection interface module is electrically connected with the detection control circuit and is used for transmitting detection commands and detection data;

the detection control circuit is used for detecting instruction control and message analysis processing;

the detection receiving circuit is electrically connected with the detection control circuit and the detection antenna and is used for receiving the information of the responder and monitoring and controlling the 27MHz activation information;

the detection transmitting circuit is electrically connected with the detection control circuit and the detection antenna and is used for generating an activation energy signal;

the safety reading control module is electrically connected with the detection transmitting circuit and the detection antenna and is used for ensuring the reading protection of the detection module after the CPU fails;

the power module is used for providing working power for the detection unit.

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