AC / DC switchable turnout control system and method

Abstract

This invention discloses a switch control system and method capable of switching between AC and DC power. The system includes a switch control module, a data storage chip, and a safety communication board. The switch control module comprises a DC switch control module for controlling DC switch machines and an AC switch control module for controlling AC switch machines. The DC switch control module consists of a logic control motherboard and a DC drive board, while the AC switch control module consists of a logic control motherboard and an AC drive board. The logic control motherboard is used for communication with the safety communication board, equipment initialization, loading software images, processing logic commands, determining device status, and handling drive and data acquisition tasks. The DC and AC drive boards are used to output drive power to the switch machine in drive mode and to obtain switch machine indication information in acquisition mode. This invention addresses the problem of high hardware replacement costs during station renovations.

Description

Technical Field

[0001] This invention relates to the field of rail transit signal control system technology, and in particular to a turnout control system and method capable of switching between AC and DC signals. Background Technology

[0002] During the upgrade and renovation of rail transit systems, the existing switch machines are four-wire DC switch machines. Upgrading and capacity expansion requires converting them to five-wire AC switch machines. The existing DC switch machine control modules need to be replaced with AC switch machine control modules, and the signaling equipment supplier may also need to be changed. However, due to operational constraints, it is not possible to replace all equipment on the entire line simultaneously. The usual practice is to first switch the entire signaling system to the new supplier, and then gradually replace the older switch machine equipment.

[0003] Currently, most fully electronic switch machine control modules use two different types for DC and AC switch machines, which are incompatible with each other. Operating companies or signal equipment suppliers need to prepare both types of switch machine control modules simultaneously. When switching signal systems, the DC switch machine control module is used first, and then the fully electronic boards in the signal room are replaced with AC switch machine control modules as outdoor switch machines are replaced in batches. Because there are no reusable parts between the two types of switch machine control modules, the hardware replacement costs are high during on-site upgrades and modifications.

[0004] The statements herein provide only background information in relation to this invention and do not necessarily constitute prior art. Summary of the Invention

[0005] The purpose of this invention is to provide a turnout control system and method capable of switching between AC and DC power, which solves the problem of high hardware replacement costs during station renovation.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A turnout control system capable of AC / DC switching includes a turnout control module, a data storage chip, and a safety communication board.

[0008] The turnout control module includes a DC turnout control module for controlling DC switch machines and an AC turnout control module for controlling AC switch machines. The DC turnout control module consists of a logic control motherboard and a DC drive board, while the AC turnout control module consists of a logic control motherboard and an AC drive board. The logic control motherboard is used for communicating with the safety communication board, initializing the equipment, loading software images, processing logic commands, judging device status, and handling drive and data acquisition tasks. The DC and AC drive boards are used to output drive power to the switch machine in drive mode and to obtain switch machine indication information in acquisition mode.

[0009] The data storage chip is used to store the configuration data required by the turnout control module, as well as the DC turnout control software image and the AC turnout control software image. The data storage chip is plugged into the safety communication board, and the data in it is distributed to each turnout control module by the safety communication board.

[0010] The safety communication board is responsible for internal and external communication. Externally, it communicates with the main control computer to obtain turnout control commands and transmit turnout indication information. Internally, it communicates with the turnout control module to issue turnout control commands obtained from the main control computer and information from the data storage chip, as well as collect the turnout indication information returned by the turnout control module and transmit it to the main control computer.

[0011] Optionally, the logic control motherboard is equipped with a fuse module and an isolation module. When the power module and the drive module fail, the isolation module will open the isolation relay, disconnect the power supply to all relays on the drive board, and cut off the external output. When the isolation module fails or the board experiences an abnormal situation that affects safety, the fuse module will burn the board fuse, irreversibly cutting off the relay power supply to the isolation module and guiding the board to a safe state.

[0012] Optionally, a disconnection relay is provided on the logic control motherboard. When the turnout control module is powered on, the disconnection relay is activated; when the power is not activated, the disconnection relay is deactivated, and both the drive and indication circuits are disconnected.

[0013] Optionally, the logic control motherboard is equipped with an ADC readback module for acquiring drive current, representing voltage, and representing current.

[0014] Optionally, the DC drive plate is equipped with two directional relays, two enable relays, one IGBT, and one external DC connector;

[0015] The input interface of the external DC connector is used to connect to DC220V power supply and AC110V power supply, and the output interface is used to connect to the X1-X6 interface of the switch machine.

[0016] The two directional relays are a positioning directional relay and a reversing directional relay, which are used to indicate the position information of the DC turnout control module and perform corresponding driving according to the turnout driving command.

[0017] The two enable relays are switches for switching between drive and acquisition modes. In acquisition mode, the two enable relays drop, connecting the AC110V power supply, and the DC turnout control module acquires the indication information of the switch machine. In drive mode, the two enable relays are activated, and the DC turnout control module outputs DC220V drive power to the switch machine.

[0018] IGBTs are arc-extinguishing devices connected to a DC220V power supply. They are picked up in the final step of the start-up phase and disconnected in the first step of the stop-drive phase.

[0019] Optionally, the AC drive plate is equipped with two directional relays, three enable relays, three SSRs, and one external AC connector;

[0020] The input interface of the external AC connector is used to connect to AC380V and AC110V power supplies, and the output interface is used to connect to the X1-X5 interface of the switch machine.

[0021] The two directional relays are a positioning directional relay and a reversing directional relay, which are used to indicate the position information of the AC turnout control module and perform corresponding driving according to the turnout driving command.

[0022] The three enable relays are switches for switching between drive and acquisition modes. One enable relay is set for each AC380V power supply. In acquisition mode, the three enable relays drop, connecting the AC110V power supply, and the AC turnout control module acquires the indication information of the switch machine. In drive mode, the three enable relays are activated, and the AC turnout control module outputs AC380V drive power to the switch machine.

[0023] An SSR is an arc-extinguishing device. One SSR is set for each AC380V power supply. It is activated in the last step of the start-up phase and deactivated in the first step of the stop-drive phase.

[0024] Optionally, the interfaces on the external DC connector and the external AC connector that connect to the AC110V power supply and the interfaces that connect to the switch machine X1-X5 interfaces are in the same position, and the interfaces on the external DC connector that connect to the DC220V power supply and the interfaces on the external AC connector that connect to the AC380V power supply and the switch machine X6 interface do not overlap.

[0025] Optionally, the logic control motherboard is connected to both the DC drive board and the AC drive board via on-board connectors. The wiring definitions between the same signal interfaces and connectors of the DC drive board and the AC drive board are consistent, and the wiring definitions between different signal interfaces and connectors do not conflict.

[0026] Optionally, each safety communication board and turnout control module has two CPUs, forming a two-out-of-two system, and the entire AC / DC switchable turnout control system is a two-out-of-two system.

[0027] Optionally, the AC / DC switchable turnout control system is a dual-system hot standby system, and the safety communication board, DC turnout control module and AC turnout control module all support hot-swapping.

[0028] A turnout control method capable of switching between AC and DC power, characterized in that, applied to the aforementioned turnout control system capable of switching between AC and DC power, it includes:

[0029] After the AC / DC switchable turnout control system is powered on, the logic control motherboard obtains the equipment type information from the safety communication board to confirm whether it is in AC or DC control mode.

[0030] The logic control motherboard requests the corresponding software image from the security communication board based on its acquired control mode, and loads the software image into local memory.

[0031] After the image is loaded, a self-test program is started to perform a comprehensive test on the device status of the turnout control module;

[0032] After the test is passed, the logic control board starts working, drives the switch machine accordingly based on the turnout control commands transmitted from the safety communication board, and collects turnout indication information and sends it back to the safety communication board.

[0033] The present invention has the following advantages:

[0034] The turnout control module consists of a logic control motherboard and a drive board. The logic control motherboard is hardware-compatible with different railway line systems, and it includes a CPU, FPGA, fuse module, isolation module, and ADC readback module. Hardware costs can account for more than half of the entire turnout control module's cost. Therefore, during station renovations, if only the turnout type is changed (e.g., from DC to AC), the logic control motherboard does not need to be replaced; only the drive board needs to be replaced, reducing hardware replacement costs by more than 50%.

[0035] The turnout control software image is stored in the data storage chip. After replacing the drive board, the corresponding software image can be automatically loaded without manual burning. Furthermore, the logic has been made compatible and does not require updates, which can save manpower costs during station renovation.

[0036] The logic control motherboard is universal. When a new type of switch machine needs to be adapted, only the corresponding driver board needs to be developed. The R&D cost can be distributed among multiple switch machine solutions, avoiding the repeated investment of designing an entire board for each type of switch machine.

[0037] As a core component, the logic control motherboard maintains consistent troubleshooting and parameter configuration logic across different switch machine types. Maintenance personnel do not need to learn independent operating procedures for each board, which reduces maintenance difficulty and training costs. Attached Figure Description

[0038] To more clearly illustrate the technical solution of the present invention, the accompanying drawings used in the description will be briefly introduced below. Obviously, the drawings described below are one embodiment of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort:

[0039] Figure 1 This is a structural diagram of a turnout control system capable of switching between AC and DC power according to the present invention.

[0040] Figure 2 This is a schematic diagram of the DC drive buckle of the present invention;

[0041] Figure 3 This is a schematic diagram of the AC drive buckle plate of the present invention;

[0042] Figure 4 This is a schematic diagram showing the definition of external connectors for the DC and AC buckles of the present invention;

[0043] Figure 5 This is a schematic diagram showing the connector wiring definition between the logic control motherboard and the drive plate of the present invention;

[0044] Figure 6 This is a flowchart of a turnout control method with AC / DC switching capability according to the present invention. Detailed Implementation

[0045] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, further illustrates the solution proposed by the present invention. The advantages and features of the present invention will become clearer from the following description. It should be noted that the drawings are in a very simplified form and use non-precise proportions, used only to facilitate and clearly illustrate the embodiments of the present invention. Please refer to the drawings to make the objectives, features, and advantages of the present invention more apparent and understandable. It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are only for illustrative purposes to aid those skilled in the art and are not intended to limit the implementation conditions of the present invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to the size, without affecting the effects and objectives achieved by the present invention, should still fall within the scope of the technical content disclosed in the present invention.

[0046] like Figures 1-3As shown, this invention provides a switch control system capable of switching between AC and DC power. The system includes a switch control module, a data storage chip, and a safety communication board. The switch control module includes a DC switch control module f for controlling a DC switch machine and an AC switch control module g for controlling an AC switch machine. The DC switch control module f consists of a logic control motherboard a and a DC drive board b, while the AC switch control module g consists of a logic control motherboard a and an AC drive board c. The DC drive board b and the AC drive board c are used to output drive electricity to the switch machine in drive mode and to obtain switch machine indication information in acquisition mode.

[0047] The logic control motherboard a is equipped with a CPU and an FPGA, which are used to communicate with the security communication board, initialize devices, load software images, process logic commands, determine device status, and handle driver and acquisition tasks.

[0048] The logic control motherboard a also includes a fuse module and an isolation module. When the power supply module and drive module fail, the isolation module will open the isolation relay, disconnecting the power supply to all relays on the drive board (i.e., DC drive board b or AC drive board c), thus cutting off the external output. When the isolation module fails or an abnormal situation occurs on the board that affects safety, the fuse module will blow the board's fuse, irreversibly cutting off the relay power supply to the isolation module and guiding the board to a safe state.

[0049] The logic control motherboard a is also equipped with an ADC (Analog-to-digital converter) readback module, which can collect drive current, voltage and current information.

[0050] The logic control motherboard a is also equipped with a disconnection relay. When the turnout control module (i.e., DC turnout control module f or AC turnout control module g) is powered on, the disconnection relay is activated; when the power is not activated, the disconnection relay is deactivated, and the drive and display circuits are disconnected to ensure that there will be no external false drive or false data acquisition when the turnout control module fails.

[0051] The DC drive plate b is equipped with two direction relays, two enable relays, one IGBT (Insulated-Gate Bipolar Transistor), and one external DC connector. The input interface of the external DC connector is used to connect to external DC 220V and AC 110V power supplies, thus obtaining DC 220V drive power and AC 110V indication power from the outside to power the DC turnout control module f. The output interface is used to connect to the X1-X6 interfaces of the switch machine.

[0052] The two directional relays are a positioning directional relay and a reversing directional relay, used to indicate the position information of the DC turnout control module f, and to perform corresponding actuation according to the turnout drive command. Upon receiving a positioning drive command, the positioning directional relay is activated, and the reversing directional relay is deactivated. Upon receiving a reversing drive command, the positioning directional relay is deactivated, and the reversing directional relay is activated.

[0053] The two enable relays act as switches for switching between drive and data acquisition modes. Normally, the DC turnout control module f is in data acquisition mode. When the two enable relays are down, AC 110V power is connected, and the DC turnout control module f acquires the indicator information from the switch machine. Upon receiving a drive command, it enters drive mode, the two enable relays are activated, and the DC turnout control module f outputs DC 220V drive power to the switch machine.

[0054] IGBTs are arc-extinguishing devices connected to a DC220V drive circuit. They are picked up in the last step of the drive start phase and disconnected in the first step of the drive stop phase. As the last device picked up when the entire drive circuit is turned on and the first device to fall when it is disconnected, IGBTs play the role of arc extinguishing.

[0055] The AC drive plate c is equipped with two directional relays, three permission relays, three SSRs (Solid State Relays), and one external AC connector. The input interface of the external AC connector is used to connect to external AC380V and AC110V power supplies, thereby obtaining AC380V drive power and AC110V indication power from the outside to power the AC turnout control module g. The output interface is used to connect to the X1-X5 interfaces of the switch machine.

[0056] The two directional relays are a positioning directional relay and a reversing directional relay, used to indicate the position information of the AC turnout control module g, and to perform corresponding actuation according to the turnout drive command. Upon receiving a positioning drive command, the positioning directional relay is activated, and the reversing directional relay is deactivated. Upon receiving a reversing drive command, the positioning directional relay is deactivated, and the reversing directional relay is activated.

[0057] Three enable relays serve as switches for switching between drive and data acquisition modes, with one enable relay corresponding to each AC 380V power supply path. Normally, the AC turnout control module g is in data acquisition mode. When the three enable relays are deactivated, the AC 110V power supply is connected, and the AC turnout control module g acquires the switch machine's indication information. Upon receiving a drive command, it enters drive mode, the three enable relays are activated, and the AC turnout control module g outputs AC 380V drive power to the switch machine.

[0058] An SSR (Self-Suppressing Array) is an arc-extinguishing device, with one SSR installed for each AC 380V power supply circuit. It is activated in the final step of the start-up phase and deactivated in the first step of the stop-drive phase. As the last device to be activated when the entire drive circuit is turned on and the first device to be deactivated when the circuit is turned off, it plays a crucial role in extinguishing the arc.

[0059] The data storage chip d has a FLASH memory chip for storing configuration data required by the turnout control module (such as the type of equipment controlled by each turnout control module and other parameters required for software operation), as well as DC turnout control software images and AC turnout control software images. The data storage chip is plugged into the safety communication board e, and the data in it is distributed by the safety communication board e to each turnout control module through a redundant CAN bus.

[0060] The safety communication board e is responsible for internal and external communication. Externally, it communicates with the main control computer to obtain turnout control commands and transmit turnout indication information. Internally, it communicates with each turnout control module to issue turnout control commands obtained from the main control computer and information from the data storage chip d, and collects the turnout indication information returned by each turnout control module and transmits it to the main control computer.

[0061] The safety communication board e can be redundantly connected to the main control computer via red and blue network cables, and can be connected to each turnout control module via a redundant CAN bus.

[0062] A single safety communication board e can communicate with multiple DC turnout control modules f and AC turnout control modules g.

[0063] Each safety communication board e and turnout control module (i.e., DC turnout control module f and AC turnout control module g) has two CPUs, forming a two-out-of-two system. The entire AC / DC switchable turnout control system is a two-out-of-two system.

[0064] The AC / DC switchable turnout control system is a dual-system hot standby system, and the safety communication board e, DC turnout control module f, and AC turnout control module g all support hot-swapping.

[0065] The DC turnout control module f receives turnout control commands from the safety communication board e, outputs drive electricity through the cable to drive the DC switch machine accordingly, and collects switch machine indication information and sends it back to the safety communication board e.

[0066] One DC turnout control module f can control one DC switch machine.

[0067] The AC turnout control module g receives turnout control commands from the safety communication board e, outputs drive electricity through the cable to drive the AC switch machine accordingly, and collects the switch machine indication information and sends it back to the safety communication board e.

[0068] One AC turnout control module g can control one DC switch machine.

[0069] Both the DC turnout control module f and the AC turnout control module g are connected to the switch machine via cables. The differences in input and output interfaces due to the different switch machine models are distinguished by external connectors.

[0070] like Figure 4 As shown, the interfaces on both the external DC and AC connectors that connect to the AC110V power supply and those that connect to the X1-X5 interfaces of the switch machine are in the same position. Furthermore, the interfaces on the external DC connector that connect to the DC220V power supply and those on the external AC connector that connect to the AC380V power supply and the X6 interface of the switch machine do not overlap. Specifically, interfaces 4 and 8 on both the external DC and AC connectors are used to connect to the AC110V power supply, interfaces 6, 10, 14, 18, and 22 are used to connect to the X1-X5 interfaces of the switch machine connector, interfaces 30 and 32 on the external DC connector are used to connect to the DC220V power supply, and interfaces 20, 24, 26, and 28 on the external AC connector are used to connect to the AC380V power supply and the X6 interface of the switch machine. The advantage of this design is that when replacing the switch machine, only a small amount of wiring on the connectors needs to be replaced to complete the adjustment. Existing connectors can continue to be used with minimal manual modification, eliminating the need to remake new ones, thus saving manpower and resources.

[0071] like Figure 5 As shown, the logic control motherboard a, DC drive board b, and AC drive board c are connected via on-board connectors. The wiring definitions between the same signal interfaces and connectors of DC drive board b and AC drive board c are consistent, while the wiring definitions between different signal interfaces and connectors do not conflict. This is to allow the same logic control motherboard to adapt to different drive boards; therefore, the interface definitions have been processed to ensure consistent hardware wiring in common areas and differentiated wiring in different areas, preventing wiring definition conflicts. Figure 5 The signals marked in red are those with the same wiring as those on DC drive plate b and AC drive plate c. The signals marked in blue are those unique to DC drive plate b, and the signals marked in green are those unique to AC drive plate b.

[0072] Based on the same inventive concept, this invention also provides a turnout control method capable of AC / DC switching, applied to the aforementioned turnout control system capable of AC / DC switching. For example... Figure 6 As shown, the method includes the following steps:

[0073] S1, after the AC / DC switchable turnout control system is powered on, the logic control motherboard obtains the equipment type information from the safety communication board to confirm whether it is in AC or DC control mode.

[0074] After the turnout control system is powered on, the logic control motherboard starts up and communicates with the safety communication board to obtain the device type information recorded in the data storage chip. The logic control motherboard determines the type of device controlled by this turnout control module, whether it is an AC turnout or a DC turnout.

[0075] S2, the logic control motherboard requests the corresponding software image from the security communication board based on its acquired control mode, and loads the software image into local memory.

[0076] The logic control motherboard communicates with the safety communication board, requests the DC turnout control software image or AC turnout control software image stored in the data storage chip according to the type of control equipment, and loads it into local memory.

[0077] S3, after the image is loaded, start the self-test program to perform a comprehensive test on the device status of the turnout control module.

[0078] After the turnout control software image is loaded, a self-test is performed during the initialization phase, conducting a comprehensive self-test of the components on the AC / DC turnout control module. The turnout control software judges the self-test results; if the self-test fails, it enters a safe state, rendering the system unusable, unable to drive the switch machine externally, and unable to upload switch machine position information.

[0079] S4. After the test is passed, the logic control board starts to work. It drives the switch machine accordingly based on the turnout control command transmitted from the safety communication board, and collects the turnout indication information and sends it back to the safety communication board.

[0080] After the self-test passes, the AC / DC turnout control module operates normally. The logic control motherboard communicates with the safety communication board to obtain turnout control commands and uploads turnout indication information to the safety communication board. Based on the obtained turnout control commands, the logic control motherboard controls the AC / DC drive board to drive the switch machine and collects the switch machine indication information.

[0081] Based on the AC / DC switch control system of this invention, when replacing the outdoor switch machine equipment on site, the mechanical room of the signal tower is simultaneously modified. In the scenario of replacing the DC switch machine with an AC switch machine, the specific replacement method is as follows:

[0082] 1. Remove the data storage chip from the safety communication board and update the switch machine type represented by the corresponding turnout control module to AC switch machine;

[0083] 2. Remove the DC turnout control module that controls the position of the corresponding switch machine, remove its DC drive plate from the logic control motherboard, and disconnect the finished line terminal connected to the external DC connector.

[0084] 3. Attach the AC drive plate to the logic control motherboard;

[0085] 4. Replace the cable on the finished product line terminal and re-insert it into the external AC connector on the AC drive plate;

[0086] 5. Reinsert the AC turnout control module and power it on;

[0087] 6. Conduct a drive and mining test on the new switch machine at the main control computer.

[0088] As can be seen from the above steps, when replacing a DC switch machine with an AC switch machine during station renovation, it is not necessary to replace the logic control motherboard. Only the switch machine type on the data storage chip needs to be changed, the drive board needs to be replaced, and the corresponding wiring needs to be done. The turnout control software image is stored in the data storage chip. After replacing the drive board, the corresponding software image can be automatically loaded without manual burning. Therefore, it can greatly save the hardware replacement cost and labor cost during station renovation.

[0089] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0090] Although the present invention has been described in detail through the preferred embodiments above, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be apparent to those skilled in the art after reading the above description. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A DC-AC switchable turnout control system, characterized in that Includes turnout control module, data storage chip and safety communication board: The turnout control module includes a DC turnout control module for controlling DC switch machines and an AC turnout control module for controlling AC switch machines. The DC turnout control module consists of a logic control motherboard and a DC drive board, while the AC turnout control module consists of a logic control motherboard and an AC drive board. The logic control motherboard is used for communicating with the safety communication board, initializing the equipment, loading software images, processing logic commands, judging device status, and handling drive and data acquisition tasks. The DC and AC drive boards are used to output drive power to the switch machine in drive mode and to obtain switch machine indication information in acquisition mode. The data storage chip is used to store the configuration data required by the turnout control module, as well as the DC turnout control software image and the AC turnout control software image. The data storage chip is plugged into the safety communication board, and the data in it is distributed to each turnout control module by the safety communication board. The safety communication board is responsible for internal and external communication. Externally, it communicates with the main control computer to obtain turnout control commands and transmit turnout indication information. Internally, it communicates with the turnout control module to issue turnout control commands obtained from the main control computer and information from the data storage chip, as well as collect the turnout indication information returned by the turnout control module and transmit it to the main control computer.

2. The AC / DC switchable turnout control system of claim 1, wherein, The logic control motherboard is equipped with a fuse module and an isolation module. When the power module and drive module fail, the isolation module will open the isolation relay, disconnect the power supply to all relays on the drive board, and cut off the external output. When the isolation module fails or the board experiences an abnormal situation that affects safety, the fuse module will burn the board fuse, irreversibly cutting off the power supply to the relays of the isolation module and guiding the board to a safe state.

3. The AC / DC switchable turnout control system of claim 1, wherein, The logic control motherboard is equipped with a disconnect relay. When the turnout control module is powered on, the disconnect relay is activated; when the power is not activated, the disconnect relay is deactivated, and both the drive and indication circuits are disconnected.

4. The AC / DC switchable turnout control system as described in claim 1, characterized in that, The logic control motherboard is equipped with an ADC readback module, which is used to collect drive current, represent voltage, and represent current.

5. The AC / DC switchable turnout control system as described in claim 1, characterized in that, The DC drive plate is equipped with two direction relays, two enable relays, one IGBT, and one external DC connector. The input interface of the external DC connector is used to connect to DC220V power supply and AC110V power supply, and the output interface is used to connect to the X1-X6 interface of the switch machine. The two directional relays are a positioning directional relay and a reversing directional relay, which are used to indicate the position information of the DC turnout control module and perform corresponding driving according to the turnout driving command. The two enable relays are switches for switching between drive and acquisition modes. In acquisition mode, the two enable relays drop, connecting the AC110V power supply, and the DC turnout control module acquires the indication information of the switch machine. In drive mode, the two enable relays are activated, and the DC turnout control module outputs DC220V drive power to the switch machine. IGBTs are arc-extinguishing devices connected to a DC220V power supply. They are picked up in the final step of the start-up phase and disconnected in the first step of the stop-drive phase.

6. The AC / DC switchable turnout control system as described in claim 5, characterized in that, The AC drive plate has two directional relays, three enable relays, three SSRs, and one external AC connector. The input interface of the external AC connector is used to connect to AC380V and AC110V power supplies, and the output interface is used to connect to the X1-X5 interface of the switch machine. The two directional relays are a positioning directional relay and a reversing directional relay, which are used to indicate the position information of the AC turnout control module and perform corresponding driving according to the turnout driving command. The three enable relays are switches for switching between drive and acquisition modes. One enable relay is set for each AC380V power supply. In acquisition mode, the three enable relays drop, connecting the AC110V power supply, and the AC turnout control module acquires the indication information of the switch machine. In drive mode, the three enable relays are activated, and the AC turnout control module outputs AC380V drive power to the switch machine. An SSR is an arc-extinguishing device. One SSR is set for each AC380V power supply. It is activated in the last step of the start-up phase and deactivated in the first step of the stop-drive phase.

7. The AC / DC switchable turnout control system as described in claim 6, characterized in that, The interfaces on the external DC connectors and external AC connectors that connect to the AC110V power supply and the interfaces that connect to the switch machine X1-X5 interfaces are in the same position, and the interfaces on the external DC connectors that connect to the DC220V power supply and the interfaces on the external AC connectors that connect to the AC380V power supply and the switch machine X6 interface do not overlap.

8. The AC / DC switchable turnout control system as described in claim 1, characterized in that, The logic control motherboard is connected to both the DC drive board and the AC drive board via on-board connectors. The wiring definitions between the same signal interfaces and connectors of the DC drive board and the AC drive board are consistent, and the wiring definitions between different signal interfaces and connectors do not conflict.

9. The AC / DC switchable turnout control system as described in claim 1, characterized in that, Each safety communication board and turnout control module has two CPUs, forming a two-out-of-two system. The entire AC / DC switchable turnout control system is a two-out-of-two system.

10. The AC / DC switchable turnout control system as described in claim 1, characterized in that, The AC / DC switchable turnout control system is a dual-system hot standby system, and the safety communication board, DC turnout control module and AC turnout control module all support hot-swapping.

11. A turnout control method with AC / DC switching capability, characterized in that, The turnout control system applicable to any one of claims 1 to 10, capable of switching between AC and DC, comprises: After the AC / DC switchable turnout control system is powered on, the logic control motherboard obtains the equipment type information from the safety communication board to confirm whether it is in AC or DC control mode. The logic control motherboard requests the corresponding software image from the security communication board based on its acquired control mode, and loads the software image into local memory. After the image is loaded, a self-test program is started to perform a comprehensive test on the device status of the turnout control module; After the test is passed, the logic control board starts working, drives the switch machine accordingly based on the turnout control commands transmitted from the safety communication board, and collects turnout indication information and sends it back to the safety communication board.

Images