Railway station interface cabinet relay wireless driving and collecting device

Abstract

The utility model provides a railway station interface cabinet relay wireless driving and acquiring device, which comprises an intelligent management terminal and a cabinet driving and acquiring terminal, and is characterized in that the intelligent management terminal comprises a first MCU controller, a touch display screen, a WIFI module, a 4G communication module and a first power conversion circuit, the touch display screen, the WIFI module and the 4G communication module are respectively connected with the first MCU controller, and the first power conversion circuit supplies power to each module; and the interface cabinet driving and acquiring terminal comprises a second MCU controller, and a WIFI module, a relay driving circuit, a driving output detection circuit and a loop state acquiring circuit which are respectively connected with the second MCU controller, and a second power conversion circuit for supplying power to each module. According to the device, the intelligent level of railway management can be improved, manual intervention is reduced, the working efficiency is improved, the reliability and safety of relay control are enhanced, wireless communication is adopted, the expandability of the system is improved, multi-stage power supply conversion is achieved, the remote monitoring and control capability of the railway interface cabinet relay can be effectively improved, and the reliability and safety of the system are improved. The requirements of a modern railway system are met.

Description

Technical Field

[0001] This utility model relates to the field of remote driving and data acquisition technology of relays, specifically a wireless driving and data acquisition device for a railway station interface cabinet relay. Background Technology

[0002] With the rapid development of IoT technology, intelligent and information-based applications have gradually permeated various industries, especially in railway management systems. The introduction of IoT technology has brought revolutionary changes to the monitoring and management of electrical equipment such as relay cabinets. Traditional railway system relay cabinet management mainly relies on manual on-site operation and inspection, which is labor-intensive, inefficient, prone to human error, and lacks real-time monitoring and data feedback, making it difficult to meet the high safety and reliability requirements of modern railway systems. Against this backdrop, developing a wireless drive and status acquisition device capable of remotely driving and acquiring relay data is particularly important. This device can not only improve work efficiency and reduce manual intervention, but also monitor the status of relays in real time through a graphical interface, promptly identify and handle potential problems, thereby enhancing the level of intelligence in railway management. Utility Model Content

[0003] The purpose of this invention is to provide a wireless control device for relays in railway station interface cabinets, enabling managers to remotely control and monitor the status of relays using a graphical interface. Compared to traditional manual control devices, this invention offers advantages such as informatization and intelligence. Furthermore, a single intelligent management terminal can manage the relay status of multiple interface cabinets.

[0004] To achieve the above objectives, this utility model proposes the following technical solution: a wireless drive and acquisition device for a railway station interface cabinet relay, comprising:

[0005] The system includes an intelligent management terminal and at least one interface cabinet driver-sampling terminal, wherein the intelligent management terminal communicates with each interface cabinet driver-sampling terminal via a wireless network.

[0006] The intelligent management terminal includes a first MCU controller, a touch screen connected to the first MCU controller, a first WIFI module and a 4G communication module, and a first power conversion circuit that supplies power to each module.

[0007] The interface cabinet driver terminal includes a second MCU controller, a second WIFI module connected to the second MCU controller, a relay driver circuit, a driver output detection circuit and a loop status acquisition circuit, and a second power conversion circuit that supplies power to each module.

[0008] The relay drive circuit includes an electronically controlled switch controlled by a second MCU controller, used to output a 24V or 0V drive voltage;

[0009] The drive output detection circuit includes a voltage divider resistor network connected between the output of the relay drive circuit and the second MCU controller.

[0010] The circuit status acquisition circuit includes an optocoupler isolation module, whose input is connected to the circuit under test through a current-limiting resistor, and whose output is connected to the I / O port of the second MCU controller.

[0011] Furthermore, in this utility model, the first power conversion circuit includes a 220V to 24V power adapter, a TPS54560DDAR type DC / DC conversion chip, a TPS54331DR type DC / DC conversion chip and an AMS1117-3.3 type LDO chip connected in sequence to form a voltage conversion path of 24V→5V→3.8V→3.3V;

[0012] The second power conversion circuit includes a 220V to 24V power adapter and a TPS54560DDAR type DC / DC conversion chip, forming a 24V→3.3V voltage conversion path.

[0013] Furthermore, in this utility model, the first WIFI module of the intelligent management terminal adopts a WIFI232-B2 / A2 type serial port to WIFI module, which is connected to the first MCU controller through a serial interface;

[0014] The second WIFI module of the interface cabinet driver terminal also adopts the WIFI232-B2 / A2 type serial port to WIFI module, which is connected to the second MCU controller through a serial interface.

[0015] Furthermore, in this invention, the MCU controls the relay drive circuit to output 24V or 0V through IO output;

[0016] The output voltage of the drive circuit is detected by the I / O input to determine whether the drive circuit is working properly.

[0017] The MCU detects the on / off status of the circuit through IO input. At the same time, the MCU interacts with the second WIFI module through the serial port to connect to the local area network of the workplace, receive instructions issued by the intelligent management terminal, and transmit back the output status and on / off status of the relay drive circuit.

[0018] Furthermore, in this invention, the relay drive control uses the IO port of the MCU controller to control an electronic switch to realize the conduction or cutoff of the 24V power supply. When the 24V power supply is on, current flows through the control winding of the relay, and the relay contacts close; otherwise, the relay contacts open. At the same time, two voltage divider resistors are configured on the output of the relay drive circuit. By detecting the voltage division value of the lower resistor, it can be determined whether the relay drive circuit is working properly.

[0019] Furthermore, in this invention, the loop status acquisition circuit connects the loop to be detected in series with the optocoupler through a current-limiting resistor. When the entire loop is conducting, the optocoupler is energized and emits light, and the signal detection circuit on the other side of the optocoupler outputs a low level. When the entire loop is not conducting, the optocoupler does not emit light, and the signal detection circuit on the other side of the optocoupler outputs a high level. The MCU controller reads the output level of the corresponding optocoupler through the IO port to determine the on / off state of the loop.

[0020] Furthermore, in this invention, the touchscreen display of the intelligent management terminal is a capacitive touchscreen, and its display interface includes multiple IP address selection tabs and corresponding relay status display areas. The intelligent management terminal, equipped with a capacitive touchscreen, allows for relay control and status viewing through a graphical interface. Users can intuitively select relays from different interface cabinets via IP addresses and view the relays' operating status in real time, lowering the operational threshold and improving the user experience.

[0021] Furthermore, in this invention, the relay drive circuit of the interface cabinet driver terminal has 32 independent drive channels, each channel corresponding to a state detection voltage divider network. This enables each interface cabinet to independently control and monitor multiple relays, significantly improving control capabilities. Through the distributed deployment of multiple interface cabinets, a large-scale relay control system can be constructed, suitable for large-scale railway management scenarios.

[0022] Beneficial effects: The technical solution of this application has the following technical effects:

[0023] 1. This device, based on wireless communication technology, enables remote control and status monitoring of the interface cabinet relays, replacing traditional manual on-site operation. Through the intelligent management terminal, administrators can monitor the relay status of multiple interface cabinets in real time via a graphical interface at the control center, greatly improving the level of intelligence in railway relay management.

[0024] 2. This device uses an MCU to control the relay drive circuit and is equipped with a drive output detection circuit and a loop status acquisition circuit. It can detect the operating status of the relay drive circuit and the continuity of the loop, ensuring the accuracy and reliability of relay control. Simultaneously, the relay drive circuit uses an electronic switch to control the 24V power supply, avoiding potential contact problems associated with mechanical relays.

[0025] 3. This device uses a WIFI232-B2 / A2 serial-to-WIFI module, enabling wireless communication between the intelligent management terminal and multiple interface cabinet driver terminals, avoiding the wiring complexity of traditional wired connections. Through a 4G communication module, remote control can also be achieved, extending the device beyond the local area network to a wider range of railway management systems.

[0026] The system supports simultaneous access to multiple interface cabinets and intelligent management terminals, providing excellent scalability and allowing for flexible addition of relay control points according to railway management needs. Multi-stage power conversion ensures system stability. The device employs a multi-stage DC / DC conversion circuit to convert 220V AC power to different operating voltages (24V, 5V, 3.8V, 3.3V), ensuring stable power supply to different modules and improving system stability and anti-interference capabilities. The use of mature power management chips (such as TPS54560DDAR, TPS54331DR, and AMS1117-3.3) enhances power conversion efficiency and reliability.

[0027] It should be understood that all combinations of the foregoing concepts and the additional concepts described in more detail below can be considered as part of the utility model subject matter of this disclosure, provided that such concepts do not contradict each other.

[0028] The foregoing and other aspects, embodiments, and features of the present invention will be more fully understood from the following description in conjunction with the accompanying drawings. Other additional aspects of the present invention, such as features and / or beneficial effects of exemplary embodiments, will become apparent from the following description or may be learned through practice of specific embodiments according to the teachings of the present invention. Attached Figure Description

[0029] The accompanying drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component shown in the various figures may be denoted by the same reference numeral. For clarity, not every component is labeled in each figure. Embodiments of various aspects of the present invention will now be described by way of example and with reference to the accompanying drawings, wherein:

[0030] Figure 1 This is a diagram showing the overall system structure of this utility model.

[0031] Figure 2 This is a structural diagram of the intelligent management terminal system of this utility model.

[0032] Figure 3 This is a power tree diagram of the intelligent management terminal of this utility model.

[0033] Figure 4 This is a structural diagram of the interface cabinet driver terminal system of this utility model. Detailed Implementation

[0034] To better understand the technical content of this utility model, specific embodiments are described below in conjunction with the accompanying drawings. Various aspects of this utility model are described in this disclosure with reference to the accompanying drawings, which illustrate numerous illustrative embodiments. The embodiments of this disclosure are not necessarily defined to include all aspects of this utility model. It should be understood that the various concepts and embodiments described above, as well as those described in more detail below, can be implemented in any of many ways, because the concepts and embodiments disclosed in this utility model are not limited to any particular implementation. Furthermore, some aspects of this utility model can be used alone or in any suitable combination with other aspects disclosed in this utility model.

[0035] like Figure 1-4 As shown in the attached figure, the overall structure of this embodiment is as follows. Figure 1 As shown, the core component of a wireless relay data acquisition device for railway station interface cabinets includes an intelligent management terminal and an interface cabinet data acquisition terminal. The intelligent management terminal and the interface cabinet data acquisition terminal have a one-to-many relationship; the intelligent management terminal can operate different data acquisition terminals at different times using time-division multiplexing. The intelligent management terminal interacts with the interface cabinet data acquisition terminals via a Wi-Fi local area network, and different data acquisition terminals are distinguished by different IP addresses. Furthermore, the intelligent management terminal integrates a touchscreen, allowing operators to issue commands or collect data. In addition, the intelligent management terminal also integrates a 4G communication module, enabling data interaction with a remote cloud server.

[0036] The system architecture of the intelligent management terminal is shown in the attached figure. Figure 2 As shown. First, a power supply is connected via a round-hole power plug, and then the supply voltage is converted to different levels as needed. Then, a first MCU controller connects to and controls the touchscreen, 4G module, and first WIFI module, implementing their respective functions.

[0037] In the actual implementation of the intelligent management terminal, the power supply components are selected as follows: a standard 220V to 24V power adapter is selected, with 24V power supplied through a round-hole power plug to power the entire system. The main power conversion chip is the TI TPS54560DDAR DC / DC chip, which converts 24V to 5V; the TI TPS54331DR DC / DC chip is selected, which converts 5V to 3.8V; and the AMS1117-3.3 LDO chip from AUTOS Semiconductor is selected, which converts 5V to 3.3V. The system's power tree is attached. Figure 3 As shown, the touchscreen is powered directly by 24V, the first MCU controller and the first WIFI module are powered by 3.3V, and the 4G module is powered by 3.8V.

[0038] In the actual implementation of the intelligent management terminal, the first MCU controller selected is STMicroelectronics' STM32F407VET6. This model of MCU is based on... The core is equipped with a floating-point unit (FPU) with a main frequency of up to 168MHz and four serial communication ports. In this embodiment, the connection between the first MCU controller and the touch screen, 4G module, and first WIFI module is all achieved through serial ports. The touch screen is a smart serial port screen from Beijing DWIN Technology Co., Ltd., which comes with a dual 8051 core T5L single-chip driver solution. Users can pre-import their designed interface images into the system and develop various display and touch functions through the serial port of the MCU controller.

[0039] The 4G module used is the MC665_CN_16 module from Fibocom, which supports the 4G frequency bands of domestic operators and has a rich set of built-in network protocols. Various configurations of the 4G module can be achieved via serial port using the AT command set provided by the supplier. Finally, data exchange with the remote cloud server is performed using the MQTT protocol as needed. The first Wi-Fi module used is the WIFI232-B2 / A2 serial-to-Wi-Fi module from Renyou Technology. Similarly, various configurations of the Wi-Fi module can be achieved via serial port using the AT command set provided by the supplier.

[0040] The system structure of the interface cabinet driver terminal is shown in the attached figure. Figure 4 As shown. First, a power supply is connected via a round-hole power plug, and then the supply voltage is converted to different levels as needed. Then, a second MCU controller connects to and controls the second WIFI module, the relay drive circuit, and the loop status acquisition circuit, thereby realizing information interaction with the intelligent management terminal, driving and controlling the relay, and acquiring the loop status.

[0041] In the actual implementation of the interface cabinet driver terminal, the power supply components are selected as follows: a standard 220V to 24V power adapter is selected, with 24V power supplied through a round-hole power plug to power the entire system. The main power conversion chip is the TI TPS54560DDAR DC / DC chip, which converts 24V to 3.3V. Here, the second MCU controller, the second WIFI module, and the optocoupler used for loop status acquisition are all powered by 3.3V. Similar to the intelligent management terminal, the second WIFI module is a serial-to-WIFI module from Youren Technology, model WIFI232-B2 / A2. Various configurations of the WIFI module can be achieved through the serial port and using the AT command set provided by the supplier.

[0042] Additionally, as attached Figure 4As shown, the relay drive control uses the I / O port of the second MCU controller to control an electronic switch, thereby realizing the conduction or cutoff of the 24V power supply. When the 24V power supply is on, current flows through the control winding of the relay, and the relay contacts close; conversely, the relay contacts open. Simultaneously, two voltage divider resistors are configured on the relay drive circuit output. By detecting the voltage division value of the lower resistor, the normal operation of the relay drive circuit can be determined. For example, when the system controls a certain relay drive circuit to output 24V according to the instruction, the voltage division value of the corresponding lower resistor is 2.5V. At this time, the voltage level of the resistor is read through the I / O port of the second MCU controller. A high level indicates that the drive circuit is working normally, and a low level indicates that the drive circuit has malfunctioned. Correspondingly, when the system controls a certain relay drive circuit to output 0V according to the instruction, a low level indicates that the drive circuit is working normally, and a high level indicates that the drive circuit has malfunctioned.

[0043] The loop status acquisition circuit is implemented using an optocoupler. (See attached image) Figure 4 As shown, the circuit to be tested is connected in series with an optocoupler through a current-limiting resistor. When the entire circuit is conducting, the optocoupler is energized and emits light, and the signal detection circuit on the left side of the optocoupler outputs a low level. When the entire circuit is not conducting, the optocoupler does not emit light, and the signal detection circuit on the left side of the optocoupler outputs a high level. The second MCU controller can determine the continuity of the circuit by reading the output level of the corresponding optocoupler through the I / O port.

[0044] This embodiment reduces manual intervention and improves railway system management efficiency through remote wireless control and real-time data acquisition. Optical isolation and condition monitoring circuits enhance system reliability and prevent relay failures. Wireless communication reduces wiring costs and on-site maintenance workload. Supporting multiple interface cabinets, it is suitable for large-scale railway relay monitoring systems. The touchscreen provides visual operation, facilitating real-time monitoring and control by management personnel. Therefore, this device effectively enhances the remote monitoring and control capabilities of railway interface cabinet relays, meeting the needs of modern railway systems.

[0045] All standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The control method is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art and is common knowledge in the field. Since this application is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail in this application.

[0046] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Those skilled in the art to which this invention pertains can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of this invention shall be determined by the claims.

Claims

1. A wireless relay acquisition device for a railway station interface cabinet, characterized in that: include: The system includes an intelligent management terminal and at least one interface cabinet driver-sampling terminal, wherein the intelligent management terminal communicates with each interface cabinet driver-sampling terminal via a wireless network. The intelligent management terminal includes a first MCU controller, a touch screen connected to the first MCU controller, a first WIFI module and a 4G communication module, and a first power conversion circuit that supplies power to each module. The interface cabinet driver terminal includes a second MCU controller, a second WIFI module connected to the second MCU controller, a relay driver circuit, a driver output detection circuit and a loop status acquisition circuit, and a second power conversion circuit that supplies power to each module. The relay drive circuit includes an electronically controlled switch controlled by a second MCU controller, used to output a 24V or 0V drive voltage; The drive output detection circuit includes a voltage divider resistor network connected between the output of the relay drive circuit and the second MCU controller. The circuit status acquisition circuit includes an optocoupler isolation module, whose input is connected to the circuit under test through a current-limiting resistor, and whose output is connected to the I / O port of the second MCU controller.

2. The wireless relay acquisition device for railway station interface cabinets according to claim 1, characterized in that: The first power conversion circuit includes a 220V to 24V power adapter, which is connected in sequence to a TPS54560DDAR DC / DC converter chip, a TPS54331DR DC / DC converter chip, and an AMS1117-3.3 LDO chip, forming a voltage conversion path of 24V→5V→3.8V→3.3V. The second power conversion circuit includes a 220V to 24V power adapter and a TPS54560DDAR type DC / DC conversion chip, forming a 24V→3.3V voltage conversion path.

3. The wireless relay acquisition device for railway station interface cabinets according to claim 1, characterized in that: The first WIFI module of the intelligent management terminal is a WIFI232-B2 / A2 type serial port to WIFI module, which is connected to the first MCU controller through a serial interface; The second WIFI module of the interface cabinet driver terminal also adopts the WIFI232-B2 / A2 type serial port to WIFI module, which is connected to the second MCU controller through a serial interface.

4. The wireless drive and acquisition device for railway station interface cabinet relays according to claim 1, characterized in that: The MCU controls the relay drive circuit to output 24V or 0V through the IO output; The output voltage of the drive circuit is detected by the I / O input to determine whether the drive circuit is working properly. The MCU detects the on / off status of the circuit through IO input. At the same time, the MCU interacts with the second WIFI module through the serial port to connect to the local area network of the workplace, receive instructions issued by the intelligent management terminal, and transmit back the output status and on / off status of the relay drive circuit.

5. The wireless relay acquisition device for railway station interface cabinets according to claim 1, characterized in that: The relay drive control uses the MCU controller's I / O port to control an electronic switch, realizing the conduction or cutoff of the 24V power supply. When the 24V power supply is on, current flows through the relay's control winding, and the relay contacts close; conversely, the relay contacts open. At the same time, there are two voltage divider resistors configured on the relay drive circuit output. By detecting the voltage division value of the lower resistor, it can be determined whether the relay drive circuit is working properly.

6. The wireless drive and acquisition device for railway station interface cabinet relays according to claim 1, characterized in that: The loop status acquisition circuit connects the loop to be tested in series with an optocoupler through a current-limiting resistor. When the entire loop is conducting, the optocoupler is energized and emits light, and the signal detection circuit on the other side of the optocoupler outputs a low level. When the entire loop is not conducting, the optocoupler does not emit light, and the signal detection circuit on the other side of the optocoupler outputs a high level. The MCU controller can determine the loop's on / off status by reading the corresponding optocoupler's output level through the IO port.

7. The wireless relay acquisition device for railway station interface cabinets according to claim 1, characterized in that: The intelligent management terminal has a capacitive touchscreen display, and its display interface includes multiple IP address selection labels and corresponding relay status display areas.

8. The wireless relay acquisition device for railway station interface cabinets according to claim 1, characterized in that: The relay drive circuit of the interface cabinet driver terminal has 32 independent drive channels, and each channel is equipped with a status detection voltage divider network.

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