Semi-automatic block system practical training equipment inter-station communication device

Abstract

The utility model relates to an inter-station communication device of semi-automatic block system training equipment. The inter-station communication device comprises a signal relay state monitoring module used for detecting state signals of a positive electricity relay and a negative electricity relay of a station; the signal transceiver is electrically connected with the signal relay state monitoring module and used for receiving state signals, detected by the signal relay state monitoring module, of the positive relay and the negative relay and processing the received state signals, and the communication module is electrically connected with the signal transceiver in a bidirectional mode and used for communicating with the signal transceiver. The signal transceiver is used for sending the signal processed by the signal transceiver to the next adjacent station; the relay module is in communication connection with the signal transceiver, and the signal transceiver controls whether the relay module is connected with a station block power supply or not according to a received signal sent by a previous adjacent station; information wireless transmission between the two stations in the whole process can reduce the size of the whole system, reduce the construction and maintenance difficulty and save the construction cost. The method can also be used for debugging a semi-automatic block system between two stations.

Description

Technical Field

[0001] The present application relates to the technical field of railway signal section blocking, and in particular to an inter-station communication device for training equipment of a semi-automatic blocking system. Background Art

[0002] The semi-automatic block system consists of two semi-automatic block machines, track circuits, a block power supply, operating buttons, and various indicator lights. The two semi-automatic block machines are connected by two section cables, commonly known as block lines. Communication between the two stations is transmitted via these lines. The ZXJ (positive line relay) and FXJ (negative line relay) control the reception of positive and negative block signals between the two stations, while the ZDJ (positive line relay) and FDJ (negative line relay) control the transmission of positive and negative block signals. Therefore, simply monitoring the ZDJ and FDJ statuses and controlling the corresponding block power supply activates the ZXJ (positive line relay) and FXJ (negative line relay), eliminating the need for a block line between the two stations. During the development of the semi-automatic block system equipment used for practical training, it was discovered that the existing method of connecting the semi-automatic block machines with cables for the block lines between the two stations not only occupied a large area, but also was difficult to construct and inconvenient for subsequent repair and maintenance. Utility Model Content

[0003] In order to overcome the shortcomings of the above-mentioned prior art, the main purpose of the present invention is to provide an inter-station communication device for semi-automatic block system training equipment, which reduces the volume of the entire system, reduces the construction difficulty, and saves construction costs.

[0004] To achieve the above-mentioned object, the present invention adopts the following technical solution: an inter-station communication device for training equipment of a semi-automatic block system, comprising a signal transceiver, a signal relay status monitoring module, a communication module and a relay module provided at each station;

[0005] The signal relay status monitoring module is used to detect the status signals of the positive power relay and the negative power relay of the site; the status of the positive power relay and the negative power relay includes suction and drop;

[0006] The signal transceiver is electrically connected to the signal relay state monitoring module, and is used to receive the state signals of the positive relay and the negative relay detected by the signal relay state monitoring module, process the received state signals, and send the processed state signals to the communication module;

[0007] The communication module is bidirectionally electrically connected to the signal transceiver and is used to send the signal processed by the signal transceiver to the signal transceiver of the next adjacent site;

[0008] The relay module is in communication with the signal transceiver, and the signal transceiver controls whether the relay module is connected to the station blocking power supply according to the signal received from the previous adjacent station.

[0009] Preferably, it further comprises a display module, which is electrically connected to the signal transceiver and displays the status signals of the positive relay and the negative relay received by the signal transceiver.

[0010] Preferably, it further includes an indicator light, which is electrically connected to the signal transceiver and is used to display whether the communication status of the communication module is normal.

[0011] Preferably, it further comprises a key module, which is electrically connected to the signal transceiver and is used to switch the communication mode of the communication module.

[0012] Preferably, the signal transceiver includes a single chip microcomputer and a power module, the power module supplies power to the signal relay state monitoring module and the communication module, and the single chip microcomputer is electrically connected to the signal relay state monitoring module, the communication module and the relay module respectively.

[0013] Preferably, the single chip microcomputer adopts STC15L2K32S2 single chip microcomputer.

[0014] Preferably, the communication modes of the communication module include Lora communication and WIFI communication.

[0015] Compared to the prior art, the signal relay status monitoring module in the present invention collects pickup information and transmits it to the signal transceiver. Upon receiving the information, the signal transceiver converts the pickup information into binary data and transmits it to the communication module. The communication module then wirelessly transmits the received data to the communication module at the adjacent station. The adjacent station's signal transceiver receives the information and parses the message. If the message is correct, the adjacent station's signal transceiver controls the relay module contacts to connect the blocking power supply. The blocking power supply then transmits the positive or negative blocking information to the circuit, allowing subsequent circuit operation to proceed, causing the ZXJ or FXJ to pick up. This wireless transmission of information between the two stations reduces the overall system size, eases construction and maintenance, and saves construction costs. It can also be used to debug a semi-automatic blocking system between two stations. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural block diagram of the inter-station communication device of the semi-automatic block system training equipment in the utility model;

[0017] Figure 2 This is a schematic diagram of the signal transceiver power supply to 5V in the embodiment of the utility model;

[0018] Figure 3 This is the schematic diagram of the signal transceiver power supply to 3.3V in this utility model;

[0019] Figure 4 This is a schematic diagram of the signal transceiver circuit connection in the utility model;

[0020] Figure 5 This is the connection diagram of the signal relay status acquisition module in the utility model;

[0021] Figure 6 This is a circuit diagram of the display module in the present utility model;

[0022] Figure 7 This is a circuit diagram of the relay module in the present utility model;

[0023] Figure 8 This is the circuit connection diagram of the Lora communication module in this utility model;

[0024] Figure 9 This is the circuit connection diagram of the WIFI communication module in this utility model;

[0025] Figure 10 This is the circuit connection diagram of the button module in this utility model. DETAILED DESCRIPTION

[0026] The present invention will be further described below with reference to the accompanying drawings and implementation examples. Example 1

[0027] like Figure 1 As shown, this embodiment provides an inter-station communication device for a semi-automatic block system training device, specifically a 64D semi-automatic block system; including a signal transceiver, a signal relay status monitoring module, a communication module, and a relay module located at each station;

[0028] The signal relay status monitoring module is used to monitor the status of ZDJ (positive relay) and FDJ (negative relay) in the 64D semi-automatic block machine and transmit the status information to the signal transceiver; the signal transceiver is mainly used to transmit the received signal after conversion to the communication module; the communication module is used to transmit the received block line signal to the adjacent station communication module; the button module is used to select different communication modes of the signal transceiver and system initialization; the relay module is used to control whether the block power supply is connected; the device indicator light is used to reflect whether the device is working normally, and flashes when it is working normally; the display module is used to monitor the signal relay status and communication mode.

[0029] Specifically, when connecting, the signal relay status monitoring module is used to connect to the positive power relay ZDJ 81 、ZDJ 82 Terminals and negative relay FDJ 81 、FDJ 82Because terminals ZDJ and FDJ 81 and 82 are idle terminals for this relay, connecting them to an external circuit will not affect the existing system. They are connected with 0.4 square wire. When the signal relay status monitoring module detects that the ZDJ (positive relay) is engaged and the FDJ (negative relay) is disengaged, block power is being sent to the adjacent station according to a positive block signal. Similarly, when the ZDJ is disengaged and the FDJ is engaged, block power is being sent to the adjacent station according to a negative block signal. When the relay module detects that the ZDJ is engaged and the FDJ is disengaged, the signal transceiver interprets this as a positive block signal and transmits it to the communication module. Simultaneously, the signal transceiver controls the relay module to connect the block power, causing the corresponding ZXJ to engage, ensuring the normal operation of subsequent interlocking relationships.

[0030] Specifically, during operation, when the ZDJ and FDJ in the semi-automatic interlocking block machine engage, the signal relay status monitoring module detects the engagement and transmits this information to the signal transceiver. The signal transceiver converts the engagement information into binary data and sends it to the communication module. The communication module then wirelessly transmits the data to the communication module at the adjacent station. The adjacent station's signal transceiver receives the information and parses the data message. If the message is correct, the signal transceiver sends the information to the relay module. The relay module contacts connect to the blocking power supply, which then transmits the positive or negative blocking information to the circuit to participate in subsequent interlocking operations. Throughout this process, information between the two stations is transmitted wirelessly, reducing the overall system size, simplifying construction difficulty, and saving construction costs. This system can also be used to debug a semi-automatic interlocking system between two stations.

[0031] In the above embodiment, if Figure 4 The data processor shown includes a single-chip microcomputer and a power supply module. The single-chip microcomputer is respectively connected to the signal relay monitoring module, communication module, button module, relay module, device indicator light, and display module. The power supply module supplies power to all modules. The core chip of the signal transceiver adopts STC15L2K32S2 and CH340E, among which STC15L2K32S2 is the control chip, and CH340E is the program download chip connected to the serial port 1 of the single-chip microcomputer for program downloading. The entire signal transceiver includes a crystal oscillator circuit, a download circuit, and a device indicator light circuit. When the system is running normally, the indicator light flashes, and other situations are abnormal. The power supply module is an LDO power supply module, in which the HT7350-3 chip constitutes a circuit that can convert 7-28V DC voltage into 5V and 3.3V DC voltage for powering each module. The input end of the power supply can be connected to the blocked power terminal. Specifically, Figure 2 As shown in the figure, the circuit composed of chip RT9193-33 can convert DC voltage of about 5V into DC 3.3V voltage for use by the microcontroller and peripherals of the entire device. Figure 3As shown; there is also a single-chip computer power supply indicator light. When the power supply is normal, the light is on, and when the power supply circuit is abnormal, the light is off.

[0032] like Figure 5 The relay status acquisition module shown here includes a TLP521-1 optocoupler, a 1N5819 diode, an LED, and resistors of various values. J4 is the power input terminal, which is connected to the corresponding terminals of the blocking power supply to ensure module power. J3 is connected to the middle and front contacts of the ZDJ or FDJ relay, respectively. When the relay is engaged, the front and middle contacts connect, indicator D6 illuminates, the optocoupler turns on, and the ZT terminal outputs a low level. This means that when the relay is engaged, the module sends a low level to the signal transceiver. When the ZDJ or FDJ relay is disengaged, the middle and front contacts disconnect, the optocoupler turns off, indicator D6 turns off, and the ZT terminal outputs a high level. This means that when the relay is disengaged, the module sends a high level to the signal transceiver. This module can convert relay status into high and low levels for identification by the signal transceiver.

[0033] like Figure 6 The display module shown uses an OLED screen with an IIC communication protocol, specifically the Zhongjingyuan IIC OLED display screen. It has four terminals. SCL and SAD are the clock line and signal line connected to the STC15L2K32S2 P31 and P32 terminals respectively. The STC15L2K32S2 terminal can be used to simulate the IIC protocol to communicate with the screen. The VCC terminal is connected to Peripheral_3V3, and the GND terminal can be connected to the GND terminal of the entire circuit.

[0034] Figure 7 The relay module shown includes a relay, freewheeling diode, and other components. The coil used is a 5V relay driven by an NPN transistor. The relay is connected to the microcontroller's P2.5 terminal. When the microcontroller output is low, the transistor is off, and the relay does not operate. When the microcontroller output is high, the transistor conducts, and the relay operates. Diode D3 in the figure is a freewheeling diode. When the coil loses power, a high reverse EMF is generated across the coil. Without this freewheeling diode, this reverse EMF would be applied to terminals C and E of the transistor, potentially breaking it down. The freewheeling diode provides a path for dissipating this reverse EMF. Resistor R7 is a pull-down resistor to prevent malfunction of the relay during the microcontroller's initialization process.

[0035] like Figure 8The Lora communication module shown has 6 terminals. TX and RX are connected to the STC15L2K32S2 P36 and P37 terminals respectively, the VCC terminal is connected to Peripheral_3V3, the GND terminal can be connected to the GND of the entire circuit, the M0 and M1 terminals are connected to the MCU P00 and P01 terminals respectively, and the AUX is connected to the MCU P27 terminal.

[0036] like Figure 9 The WIFI communication module shown uses the ESP8266WIFI module, which has 8 terminals. The 3V3 terminal is connected to the external DC 3.3V power supply, the GND terminal is connected to the GND of the entire circuit, the TX and RX terminals are connected to the P10 and P11 terminals of the STC15L2K32S2 microcontroller respectively, the IO0 and IO2 are connected to the P23 and P22 terminals of the microcontroller respectively, and the RST and EN terminals are connected to the P21 and P12 terminals of the microcontroller respectively.

[0037] Figure 10 The button module shown here includes a button, capacitor, and resistor. Hardware debounce for the button utilizes the capacitor's discharge delay. This can also be achieved by connecting capacitors in parallel. As shown in the figure, because the voltage across the capacitor cannot change suddenly, the voltage across the button changes gradually. The microcontroller only registers the voltage change when the capacitor reaches a certain voltage threshold. The monitoring terminal is connected to the microcontroller's P13 terminal.

[0038] The above embodiments are merely examples of the present invention and do not limit the scope of protection of the present invention. Any design that is identical or similar to the present invention falls within the scope of protection of the present invention.

Claims

1. A semi-automatic block system training equipment inter-station communication device, characterized in that: It includes signal transceiver, signal relay status monitoring module, communication module and relay module located at each station; The signal relay status monitoring module is used to detect the status signals of the positive power relay and the negative power relay of the site; the status of the positive power relay and the negative power relay includes suction and drop; The signal transceiver is electrically connected to the signal relay state monitoring module, and is used to receive the state signals of the positive relay and the negative relay detected by the signal relay state monitoring module, process the received state signals, and send the processed state signals to the communication module; The communication module is bidirectionally electrically connected to the signal transceiver and is used to send the signal processed by the signal transceiver to the signal transceiver of the next adjacent site; The relay module is in communication with the signal transceiver, and the signal transceiver controls whether the relay module is connected to the station blocking power supply according to the signal received from the previous adjacent station.

2. The inter-station communication device for training equipment of a semi-automatic block system according to claim 1, characterized in that: It also includes a display module, which is electrically connected to the signal transceiver and displays the status signals of the positive relay and the negative relay received by the signal transceiver.

3. The inter-station communication device for semi-automatic block system training equipment according to claim 1, characterized in that: It also includes an indicator light, which is electrically connected to the signal transceiver and is used to display whether the communication status of the communication module is normal.

4. The inter-station communication device for semi-automatic block system training equipment according to claim 1, characterized in that: It also includes a key module, which is electrically connected to the signal transceiver and is used to switch the communication mode of the communication module.

5. The inter-station communication device for semi-automatic block system training equipment according to claim 1, characterized in that: The signal transceiver includes a single chip microcomputer and a power module. The power module supplies power to the signal relay state monitoring module and the communication module. The single chip microcomputer is electrically connected to the signal relay state monitoring module, the communication module and the relay module respectively.

6. The inter-station communication device for training equipment of a semi-automatic block system according to claim 5, characterized in that: The single chip microcomputer adopts STC15L2K32S2 single chip microcomputer.

7. The inter-station communication device for training equipment of a semi-automatic block system according to claim 4, characterized in that: The communication modes of the communication module include Lora communication and WIFI communication.

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