CN213602647U

CN213602647U - Portable BTM antenna unit detector

Info

Publication number: CN213602647U
Application number: CN202120008052.9U
Authority: CN
Inventors: 董晓辉; 吴坎; 肖茂波; 姜波; 赵伟宏; 冯慕白; 郭小龙; 刘国旭; 陈国春; 陈宏然; 詹雨博; 张国华
Original assignee: Shenyang Railway Signal Co Ltd
Current assignee: Shenyang Railway Signal Co Ltd
Priority date: 2021-01-05
Filing date: 2021-01-05
Publication date: 2021-07-02
Anticipated expiration: 2031-01-05

Abstract

The utility model discloses a portable BTM antenna element detector, a serial communication port, include: the system comprises a man-machine interaction unit, a main control CPU, an FPGA unit, a self-checking excitation signal generating circuit, an N-type connector and a self-checking message receiving circuit which are sequentially connected; the N-type connector is connected with the BTM antenna unit to be tested or is connected with the BTM antenna unit to be tested through an antenna cable; and the self-checking message receiving circuit is connected with the FPGA unit. The detection device is small in size and light in weight, and is convenient for field maintenance personnel and fault handling personnel to carry.

Description

Portable BTM antenna unit detector

Technical Field

The utility model belongs to the technical field of railway signal equipment detects, a portable BTM antenna element detector is related to.

Background

The transponder message transmission module (BTM) is mainly composed of a BTM host, a BTM antenna unit (hereinafter referred to as "CAU"), and an antenna cable, wherein the CAU mainly performs functions of transmitting an activation energy signal to a ground transponder and receiving uplink message data sent by the transponder, so that identification and diagnosis, periodic maintenance and detection of CAU abnormality are particularly important. At present, a CAU (controller area network) applied on site does not have equipment capable of independently detecting the CAU, the existing detection means mainly comprises the steps of starting a BTM (Branch target management unit), the CAU and an antenna cable after installation is completed, then detecting the BTM complete machine, and when a fault is detected, the fault position cannot be judged, and whether the fault is a CAU fault cannot be specifically positioned. In addition, detection is not possible when BTM operating power is not available on site. Therefore, there is a need for a portable detector for a BTM antenna unit (CAU) that is portable in the field and can detect the CAU alone without providing a BTM operating power supply.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a portable BTM antenna element detector, small, light in weight make things convenient for on-the-spot maintainer and fault handling personnel to carry.

The utility model discloses a portable BTM antenna element detector, include: the system comprises a human-computer interaction unit, a control core CPU, an FPGA unit, a self-checking excitation signal generating circuit, an N-type connector and a self-checking message receiving circuit which are sequentially connected; the N-type connector is connected with a self-checking circuit of the BTM antenna unit to be tested or is connected with the self-checking circuit of the BTM antenna unit to be tested through an antenna cable; and the self-checking message receiving circuit is connected with the FPGA unit.

The utility model discloses an among the portable BTM antenna element detector, self-checking excitation signal generating circuit includes: the DC24V unit, the level raising unit and the output control unit are connected in sequence; the level lifting unit is connected with the FPGA unit, and the output control unit is connected with the N-type connector.

The utility model discloses an among the portable BTM antenna element detector, self-checking message receiving circuit includes: the band-pass filter circuit, the amplifying circuit and the shaping circuit are connected in sequence; the band-pass filter circuit is connected with the N-type connector to receive the CAU self-checking message, and the shaping circuit is connected with the FPGA unit to send the processed message.

The utility model discloses a portable BTM antenna element detector can detect BTM antenna element and antenna cable alone. The detector can send an excitation signal to the BTM antenna unit, the excitation signal can enable a self-detection circuit inside the BTM antenna unit to work, the self-detection circuit returns a self-detection message of the BTM antenna unit to the detector after working, and the detector judges whether the BTM antenna unit to be detected works normally or not through processing and analysis after receiving the self-detection message. The detector is powered by a battery, uses a human-computer interface unit for key input and liquid crystal display, has small volume and light weight, and is greatly convenient for field application.

Drawings

FIG. 1 is a schematic block diagram of a portable BTM antenna unit detector of the present invention;

FIG. 2 is a functional block diagram of a self-test activation signal generation circuit;

fig. 3 is a functional block diagram of a self-test message receiving circuit.

Detailed Description

As shown in fig. 1, the utility model discloses a portable BTM antenna element detector, include: the system comprises a human-computer interaction unit, a control core CPU, an FPGA unit, a self-checking excitation signal generating circuit, an N-type connector and a self-checking message receiving circuit which are sequentially connected; the N-type connector is connected with a self-checking circuit of the BTM antenna unit to be tested or is connected with the self-checking circuit of the BTM antenna unit to be tested through an antenna cable; and the self-checking message receiving circuit is connected with the FPGA unit.

The utility model discloses a detector can directly connect the BTM antenna unit that is surveyed to detect BTM antenna unit whether trouble; when confirming BTM antenna element normal work, the detector also can be through antenna cable connection by survey BTM antenna element to detect whether antenna cable is trouble. The detector uses the key input of the human-computer interaction unit to perform functional operation, and the detection result is directly displayed on the liquid crystal screen of the human-computer interaction unit for display. The detector is powered by a battery, has small volume and light weight, and is convenient for field maintenance personnel and fault handling personnel to carry.

And the human-computer interaction unit is used for inputting corresponding commands by using the keys and checking the detection process and the detection result through the liquid crystal.

The control core CPU is responsible for the operation of the whole system, receives key input signals, outputs liquid crystal display information, sends control signals to the FPGA unit and receives decoded messages of the FPGA unit.

The FPGA unit is responsible for starting the self-checking excitation signal generating circuit, decoding the received processed message and then sending the decoded message to the control core CPU.

And the self-checking message receiving circuit is responsible for processing the received CAU self-checking message and then sending the CAU self-checking message to the FPGA unit.

And the self-checking excitation signal generating circuit is responsible for generating and sending a self-checking excitation signal to the N-type connector.

The N-type connector is a connecting channel between the detector and the BTM antenna unit to be detected, and the detector sends a self-detection excitation signal through the channel and receives a self-detection message of the BTM antenna unit.

As shown in fig. 2, in the portable BTM antenna unit detector of the present invention, the self-checking excitation signal generating circuit includes: the DC24V unit, the level raising unit and the output control unit are connected in sequence; the level lifting unit is connected with the FPGA unit, and the output control unit is connected with the N-type connector.

As shown in fig. 3, in the portable BTM antenna unit detector of the present invention, the self-checking message receiving circuit includes: the band-pass filter circuit, the amplifying circuit and the shaping circuit are connected in sequence; the band-pass filter circuit is connected with the N-type connector to receive the CAU self-checking message, and the shaping circuit is connected with the FPGA unit to send the processed message.

The detection instrument sends a self-checking excitation signal to the BTM antenna unit, the self-checking excitation signal can enable a self-checking circuit inside the BTM antenna unit to work, a CAU self-checking message is returned to the detection instrument after the self-checking circuit works, and the detection instrument receives the self-checking message and then judges whether the BTM antenna unit to be detected works normally or not through processing and analysis. The specific working process is as follows:

when the control core CPU receives the key input of an operator, a control signal is sent to the FPGA unit, the FPGA unit starts the self-checking excitation signal generating circuit after receiving the control signal, and the started self-checking excitation signal generating circuit generates a self-checking excitation signal and sends the self-checking excitation signal to the BTM antenna unit to be tested through the N-type connector.

When the BTM antenna unit receives a self-checking excitation signal of the detector, a self-checking circuit in the BTM antenna unit starts to work, the BTM antenna unit returns a CAU self-checking message to the detector, the self-checking message enters a self-checking message receiving circuit through an N-type connector, the self-checking message receiving circuit sends the processed message to the FPGA unit, the FPGA unit decodes the message, the decoded message is transmitted to a control core CPU, the control core CPU analyzes the content of the message, judges the working state of the BTM antenna unit, and the final result is displayed on a liquid crystal screen of the man-machine interaction unit.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the spirit of the present invention, and any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A portable BTM antenna unit detector, comprising: the system comprises a human-computer interaction unit, a control core CPU, an FPGA unit, a self-checking excitation signal generating circuit, an N-type connector and a self-checking message receiving circuit which are sequentially connected; the N-type connector is connected with a self-checking circuit of the BTM antenna unit to be tested or is connected with the self-checking circuit of the BTM antenna unit to be tested through an antenna cable; and the self-checking message receiving circuit is connected with the FPGA unit.

2. The portable BTM antenna unit detector of claim 1, wherein the self-test excitation signal generation circuit comprises: the DC24V unit, the level raising unit and the output control unit are connected in sequence; the level lifting unit is connected with the FPGA unit, and the output control unit is connected with the N-type connector.

3. The portable BTM antenna unit detector of claim 1, wherein the self-test message receiving circuit comprises: the band-pass filter circuit, the amplifying circuit and the shaping circuit are connected in sequence; the band-pass filter circuit is connected with the N-type connector to receive the CAU self-checking message, and the shaping circuit is connected with the FPGA unit to send the processed message.