Multi-interface subway door communication bus fault detection equipment

Abstract

The utility model discloses a multi-interface subway door communication bus fault detection device comprising a host and a connecting wire harness. The host comprises a panel, a liquid crystal touch screen, an MVB communication interface A, an MVB communication interface B, an RS485 interface A, an RS485 interface B, a CAN interface A, a CAN interface B, an Ethernet interface A, an Ethernet interface B, an aviation socket, a metal button switch, a USB interface, a 2.4 G antenna, a 433M antenna, a 4G antenna, a box body and a control circuit board. And accessing the intranet or the extranet close to the first main door controller to the host. According to the utility model, the vehicle door network access and detection requirements of the existing railway vehicle can be met; the vehicle door bus is comprehensively detected, a maintenance and analysis basis is provided for maintainers, and the difficulty in processing faults of the vehicle door bus on site is greatly reduced.

Description

Technical Field

[0001] The utility model relates to an operation and maintenance device for the electric door system of rail vehicles, in particular to a multi-interface fault detection device for the communication bus of subway car doors. Background Technique

[0002] Existing rail vehicles are equipped with a train control and management system (TCMS), which is connected to an electric door controller (hereinafter referred to as a door controller) through a communication bus to collect various door information (operation status, faults, parameters, etc.) in real time. During vehicle operation, the door communication will occasionally experience an interruption (offline) fault, resulting in the crew being unable to understand the status of the door and having to perform isolation and door sealing operations, causing significant delays to the operation. Currently, the following problems exist in the door communication bus fault detection device: the door communication buses of multiple lines have been upgraded from a single network to multiple networks, and different internal network buses and external network bus interfaces have appeared in a single car body. A single detection device cannot meet the actual application requirements of each line; the poor contact problem that occurs during connection will cause occasional communication interruptions, but there is no device that can quickly measure and analyze; with the application of the fault prediction and health management (PHM) system for rail transit, various wireless transmission, diagnosis, and debugging networks, such as wifi, Bluetooth, LoRa, and 4G, have been added to the door bus, and existing devices cannot troubleshoot their network faults. Content of the Utility Model

[0003] Purpose of the Utility Model: The purpose of the utility model is to provide a multi-interface fault detection device for the communication bus of subway car doors.

[0004] Technical Solution: The device of the utility model includes a host and a connection harness. The host includes a panel, a liquid crystal touch screen, MVB communication interface A, MVB communication interface B, RS485 interface A, RS485 interface B, CAN interface A, CAN interface B, Ethernet interface A, Ethernet interface B, an aviation socket, a metal push-button switch, a USB interface, a 2.4G antenna, a 433M antenna, a 4G antenna, a box body, and a control circuit board. Without changing the connection loop relationship of the door bus, the internal network or external network close to the first main door controller is connected to the host.

[0005] Further, a liquid crystal touch screen, a metal push-button switch, a USB interface, a 2.4G antenna, a 433M antenna, and a 4G antenna are arranged on the panel of the host.

[0006] Further, MVB communication interface A, MVB communication interface B, RS485 interface A, RS485 interface B, CAN interface A, CAN interface B, Ethernet interface A, Ethernet interface B, and an aviation socket are arranged on the upper side of the box body.

[0007] Further, the control circuit board is installed inside the box body.

[0008] Further, the liquid crystal touch screen adopts a 10-inch industrial serial liquid crystal screen with a capacitive touch method and is connected to the liquid crystal touch screen driving circuit of the control circuit board of the host.

[0009] Further, the aviation socket is a power input port, and the positive pole of 110V is connected to the metal push-button switch.

[0010] Further, the metal push-button switch is connected to the power switch circuit of the control circuit board of the host.

[0011] Beneficial effects: Compared with the prior art, the present utility model has the following advantages: It not only has the bus interfaces of the four common wired methods in existing domestic subway projects, but also has four wireless network function interfaces, including wifi, Bluetooth, 1ora, and 4G. The device has rich interface functions and can meet the existing rail vehicle door network access and detection requirements; the device detects the communication bus from multiple aspects: measures the working voltage and current changes of a single signal in the bus, and checks for faults such as whether the bus connection is abnormal and whether the communication load current of the door controller is abnormal; measures the wireless signal strength in the wireless networking state to judge the connection stability; listens to the communication data, stores the data transceiver records, and judges whether there are occasional interruptions in the door controller device. Based on the above detections of the door bus, it provides a basis for maintenance and analysis for maintenance personnel, greatly reducing the difficulty of handling on-site door bus faults. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the host structure;

[0013] Figure 2 It is a schematic diagram of the connection of the device of the present utility model;

[0014] Figure 3 It is a schematic diagram of the structure of the host control circuit board. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] The technical solution of the present utility model will be further described below with reference to the drawings.

[0016] As Figure 1 shown, the device host of the present utility model mainly includes a panel 1, a liquid crystal touch screen 2, an MVB communication interface A3, an MVB communication interface B4, an RS485 interface A5, an RS485 interface B6, a CAN interface A7, a CAN interface B8, an Ethernet interface A9, an Ethernet interface B10, an aviation socket 11, a metal push-button switch 16, a USB interface 15, a 2.4G antenna 12, a 433M antenna 13, a 4G antenna 14, a box body 17, and a control circuit board 18.

[0017] The LCD touch screen 2 uses a 10-inch industrial-grade serial port LCD screen with a capacitive touch mode, and is connected to the LCD touch screen drive circuit of the host control circuit board 18 to realize human-computer interaction functions such as real-time display of data, setting parameters, and starting tests.

[0018] The wired communication interfaces (MVB, CAN, RS485) all use A+B dual DB-9 (1 male + 1 female) interfaces, which are easy to plug and transfer, and do not require external wiring. The A\B of the RS485 bus, the CAN H\CAN L of the CAN bus, and the ground wire will be connected to the voltage / current acquisition circuit of the control circuit board 18 of the host to collect voltage and current and determine the bus connection status.

[0019] The aviation socket 11 is a power supply (DC 110V) input port. The positive pole of 110V is connected to the metal button switch 16. The positive pole of the switch is connected to the power switch circuit of the control circuit board 18 of the host. The power switch circuit is connected to the voltage conversion circuit after voltage stabilization. When the metal button switch is turned on, the voltage conversion circuit works and converts 110V into 12V, 5V, and 3V voltages, which are supplied to various circuits and modules of the control circuit board 18 for use.

[0020] like Figure 3 As shown, the structure of the host control circuit board 18 of the utility model mainly includes MVB interface, RS485 interface, CAN interface, Ethernet interface, voltage conversion circuit, LCD touch screen drive circuit, voltage / current acquisition circuit, MVB communication board, wireless module, 2.4G antenna circuit, LORA module, 433M antenna circuit, mobile module, 4G antenna circuit, USB interface circuit, power switch circuit, voltage conversion circuit, core board processor circuit, FALSH memory circuit, TF card circuit and buzzer alarm circuit.

[0021] like Figure 2 As shown, the detection connection method of the utility model is: 1) when detecting the external network bus of a single car, first disconnect the bus connection between the TCMS gateway and the main door controller (MDCU1), connect the TCMS to the host through the switching and extension of the connection harness, and then connect the host to MDCU1, and other connections remain unchanged; 2) when detecting the internal network bus of a single car, first disconnect the bus connection between the main door controller (MDCU1) and the slave door controller (LDCU5), connect MDCU1 to the host through the switching and extension of the connection harness, and then connect the host to LDCU5, and other connections remain unchanged; 3) when detecting the external network and the internal network at the same time, implement the connection simultaneously in the above two ways.

Claims

1. A multi-interface subway door communication bus fault detection device, characterized in that, It includes a host and a connecting wire harness. The host includes a panel (1), a liquid crystal touch screen (2), an MVB communication interface A (3), an MVB communication interface B (4), an RS485 interface A (5), an RS485 interface B (6), a CAN interface A (7), a CAN interface B (8), an Ethernet interface A (9), an Ethernet interface B (10), an aviation socket (11), a metal push-button switch (16), a USB interface (15), a 2.4G antenna (12), a 433M antenna (13), a 4G antenna (14), a box body (17), and a control circuit board (18). Keeping the connection loop relationship of the door bus unchanged, connect the internal network or external network close to the first main controller to the host.

2. The multi-interface subway door communication bus fault detection device according to claim 1, wherein On the panel (1) of the host, there are a liquid crystal touch screen (2), a metal push-button switch (16), a USB interface (15), a 2.4G antenna (12), a 433M antenna (13), and a 4G antenna (14).

3. The multi-interface subway door communication bus fault detection device according to claim 1, characterized in that On the upper side of the box body (17), there are an MVB communication interface A (3), an MVB communication interface B (4), an RS485 interface A (5), an RS485 interface B (6), a CAN interface A (7), a CAN interface B (8), an Ethernet interface A (9), an Ethernet interface B (10), and an aviation socket (11).

4. The multi-interface subway door communication bus fault detection device according to claim 1, characterized in that The control circuit board (18) is installed inside the box body (17).

5. The multi-interface subway door communication bus fault detection device according to claim 1, wherein The liquid crystal touch screen (2) uses a 10-inch industrial-grade serial liquid crystal screen with a capacitive touch method and is connected to the liquid crystal touch screen driving circuit of the control circuit board (18) of the host.

6. The multi-interface subway door communication bus fault detection device according to claim 1, characterized in that, The aviation socket (11) is a power input port, and the positive pole of 110V is connected to the metal push-button switch (16).

7. The multi-interface subway door communication bus fault detection device according to claim 1, characterized in that The metal push-button switch (16) is connected to the power switch circuit of the control circuit board (18) of the host.

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