Switch machine control method and system

Abstract

A switch machine control method, executed by a processor in a switch machine control module, and comprising: in response to receiving a driving instruction for a target switch machine from a remote control center, respectively acquiring a representation signal, a state signal and a motor rotor position signal of the target switch machine by means of a dynamic representation acquisition unit, a monitoring and diagnosis acquisition unit, and a shaft angle conversion acquisition unit (S310); on the basis of the driving instruction, the representation signal, the state signal, and the motor rotor position signal, controlling a power conversion isolation unit to output a driving voltage to the target switch machine (S320); and using the driving voltage to drive the target switch machine to operate, so as to control the displacement, rotational speed or torque of a motor of the target switch machine, so that the target switch machine reaches an operating state expected by the driving instruction (S330). The displacement, rotational speed or torque of the motor of the target switch machine can be precisely controlled. Further provided is a switch machine control system.

Description

Switch machine control methods and systems Technical Field

[0001] This application relates to the field of switch machine control technology, and specifically to a switch machine control method and system. Background Technology

[0002] Switch machines are key basic equipment used for railway turnout switching, and their main function is to switch the turnout to the normal or reverse position. Most existing switch machines use three-phase AC asynchronous motors, ordinary carbon brush or brushless series-wound DC motors as power sources. By controlling the forward and reverse rotation of the motor, the normal and reverse position drive control of the switch machine is realized. Existing switch machines adopt a centralized electrical control method.

[0003] With the gradual development of digital and intelligent research on switch machines, the new switch machine adopts synchronous motors instead of three-phase AC asynchronous motors, ordinary carbon brush or brushless series-wound DC motors as power sources. Multiple sensors are deployed in the new switch machine to replace the electrical contacts inside the existing switch machine, and the control method has also changed from centralized electrical control to communication control.

[0004] The existing control methods for switch machines are no longer applicable to new switch machines. Designing control methods suitable for new switch machines is of great significance for achieving precise control of the displacement, speed, or torque of the switch machine motor and improving the reliability, digitalization, and intelligence level of the switch machine. Summary of the Invention

[0005] This application provides a switch machine control method and system, which can achieve precise control of the displacement, speed, or torque of the switch machine motor. This aims to improve the reliability, digitalization, and intelligence level of the switch machine.

[0006] According to a first aspect of this application, a switch machine control method is provided, the method being executed by a processor in a switch machine control module, the method comprising:

[0007] In response to receiving a drive command for the target switch machine from the remote control center, the dynamic representation acquisition unit, the monitoring and diagnostic acquisition unit, and the shaft angle conversion acquisition unit respectively acquire the representation signal, status signal, and motor rotor position signal of the target switch machine;

[0008] Based on the drive command, the indication signal, the status signal, and the motor rotor position signal, the power conversion isolation unit is controlled to output a drive voltage to the target switch machine; wherein, the power required by the power conversion isolation unit is provided by the power supply communication conversion unit; the drive command is transmitted by the power supply communication conversion unit.

[0009] The target switch machine is driven by the driving voltage to control the displacement, speed or torque of the target switch machine motor so that the target switch machine achieves the working state expected by the driving command.

[0010] According to a second aspect of this application, a switch machine control system is provided, characterized in that the system comprises: a switch machine control module, a target switch machine, and a remote control center; wherein the switch machine control module comprises processor 1 and processor 2, an external signal acquisition unit, a power supply and communication conversion unit, and a power conversion isolation unit;

[0011] The remote control center is connected to the processor 1 and processor 2 respectively via the power supply and communication conversion unit using an integrated power supply and communication cable; the power supply and communication conversion unit is also connected to the power conversion isolation unit; the power supply and communication conversion unit is used to separate power supply and communication, and is used to transmit the drive commands issued by the remote control center to the processor 1 and processor 2, and to provide the required power to the power conversion isolation unit;

[0012] The external signal acquisition unit includes a dynamic representation acquisition unit, a monitoring and diagnostic acquisition unit, and a shaft angle conversion acquisition unit; wherein, the dynamic representation acquisition unit is used to acquire the representation signal of the target switch machine; the monitoring and diagnostic acquisition unit is used to acquire the status signal of the target switch machine; and the shaft angle conversion acquisition unit is used to acquire the motor rotor position signal of the target switch machine.

[0013] The dynamic representation acquisition unit, the monitoring and diagnostic acquisition unit, and the shaft angle conversion acquisition unit each include: dynamic representation acquisition unit 1 and dynamic representation acquisition unit 2, monitoring and diagnostic acquisition unit 1 and monitoring and diagnostic acquisition unit 2, and shaft angle conversion acquisition unit 1 and shaft angle conversion acquisition unit 2; wherein, dynamic representation acquisition unit 1, monitoring and diagnostic acquisition unit 1, and shaft angle conversion acquisition unit 1 are respectively connected to the target switch machine and the processor 1; dynamic representation acquisition unit 2, monitoring and diagnostic acquisition unit 2, and shaft angle conversion acquisition unit 2 are respectively connected to the target switch machine and the processor 2;

[0014] The power conversion isolation unit is connected to the processor 1, the processor 2 and the power supply and communication conversion unit respectively. The power conversion isolation unit is used to output a driving voltage to the target switch to drive the target switch to operate.

[0015] The processor 1 and the processor 2 are used to execute the switch machine control method described in the first aspect of the embodiments of this application.

[0016] This application's technical solution, in response to receiving a drive command for a target switch machine from a remote control center, acquires the target switch machine's display signals, status signals, and motor rotor position signals through a dynamic display acquisition unit, a monitoring and diagnostic acquisition unit, and a shaft angle conversion acquisition unit, respectively. Based on the drive command, display signals, status signals, and motor rotor position signals, the control power conversion isolation unit outputs a drive voltage to the target switch machine. This drive voltage drives the target switch machine to operate, controlling the displacement, speed, or torque of the target switch machine motor to achieve the operating state expected by the drive command. This achieves control over the displacement, speed, or torque of the switch machine motor, providing a switch machine control method adapted to new types of switch machines, which is beneficial for improving the reliability, digitalization, and intelligence level of switch machines.

[0017] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this application, nor is it intended to limit the scope of this application. Other features of this application will become readily apparent from the following description. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 is a schematic diagram of the switch machine control system provided according to Embodiment 1;

[0020] Figure 2 is a schematic diagram of another switch machine control system structure provided according to Embodiment 1 of this application;

[0021] Figure 3 is a flowchart of a switch machine control method according to an embodiment of this application;

[0022] Figure 4 is a schematic diagram of the dynamic representation acquisition unit structure provided according to an embodiment of this application. Detailed Implementation

[0023] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0024] It should be noted that the terms "first," "second," "target," and "candidate," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0025] Example 1

[0026] With the gradual development of digital and intelligent research on switch machines, the new switch machine adopts synchronous motors instead of three-phase AC asynchronous motors, ordinary carbon brush or brushless series-wound DC motors as power sources. Multiple sensors are deployed in the new switch machine to replace the electrical contacts inside the existing switch machine, and the control method has also changed from centralized electrical control to communication control.

[0027] This application provides a switch machine control system for a novel switch machine. Figure 1 is a schematic diagram of the switch machine control system according to Embodiment 1. Referring to Figure 1, the switch machine control system includes:

[0028] The system includes a switch machine control module, a target switch machine, and a remote control center. Optionally, the target switch machine is a novel type that uses a synchronous motor as its power source and internally incorporates at least two of the following: an operating position sensor, an indication signal sensor, and a locking position sensor. The switch machine control module is located beside the track, adjacent to the installation position of the target switch machine.

[0029] The switch machine control module is connected to the remote control center via an integrated power supply and communication cable. This integrated power supply and communication cable combines power supply and communication functions, addressing both signal transmission and power supply needs with a single cable.

[0030] Referring again to Figure 1, the switch machine control module includes processor 1 and processor 2, an external signal acquisition unit, a power supply and communication conversion unit, and a power conversion and isolation unit;

[0031] The remote control center is connected to the processor 1 and processor 2 respectively via the power supply and communication conversion unit using an integrated power supply and communication cable; the power supply and communication conversion unit is also connected to the power conversion isolation unit; the power supply and communication conversion unit is used to separate power supply and communication, and is used to transmit the drive commands issued by the remote control center to the processor 1 and processor 2, and to provide the required power to the power conversion isolation unit;

[0032] Optionally, processor 1 and processor 2 can report the signals collected from the target switch machine to the remote control center via an integrated power supply and communication cable, providing a basis and decision-making reference for the daily maintenance and timely repair of the target switch machine.

[0033] The external signal acquisition unit includes a dynamic representation acquisition unit, a monitoring and diagnostic acquisition unit, and a shaft angle conversion acquisition unit; wherein, the dynamic representation acquisition unit is used to acquire the representation signal of the target switch machine; the monitoring and diagnostic acquisition unit is used to acquire the status signal of the target switch machine; and the shaft angle conversion acquisition unit is used to acquire the motor rotor position signal of the target switch machine.

[0034] The dynamic representation acquisition unit, the monitoring and diagnostic acquisition unit, and the shaft angle conversion acquisition unit each include: dynamic representation acquisition unit 1 and dynamic representation acquisition unit 2, monitoring and diagnostic acquisition unit 1 and monitoring and diagnostic acquisition unit 2, and shaft angle conversion acquisition unit 1 and shaft angle conversion acquisition unit 2; wherein, dynamic representation acquisition unit 1, monitoring and diagnostic acquisition unit 1, and shaft angle conversion acquisition unit 1 are respectively connected to the target switch machine and the processor 1; dynamic representation acquisition unit 2, monitoring and diagnostic acquisition unit 2, and shaft angle conversion acquisition unit 2 are respectively connected to the target switch machine and the processor 2;

[0035] The power conversion isolation unit is connected to the processor 1, the processor 2 and the power supply and communication conversion unit respectively. The power conversion isolation unit is used to output a driving voltage to the target switch machine to drive the target switch machine to operate.

[0036] Both processor 1 and processor 2 are equipped with the switch machine control logic provided in this application embodiment, and can execute the switch machine control method provided in this application embodiment. For an explanation of the switch machine control method, please refer to the description of embodiment two of this application, which will not be repeated here.

[0037] Figure 2 is a schematic diagram of another switch machine control system structure provided according to Embodiment 1 of this application. Referring to Figure 2, in an optional embodiment, the switch machine control system includes at least two switch machine control modules. The at least two switch machine control modules operate in a master-slave mode. The master switch machine control module controls the power conversion isolation unit to output a drive voltage to the target switch machine; the external signal acquisition units in both the master and standby switch machine control modules acquire signals from the target switch machine, acquiring the target switch machine's indication signal, status signal, and motor rotor position signal.

[0038] Figure 2 illustrates a switch machine control system comprising two switch machine control modules. Referring to Figure 2, the two control modules can be referred to as the I-series switch machine control module and the II-series switch machine control module, respectively. The I-series and II-series switch machine control modules have identical hardware circuits, and either system can operate independently. The dual-system system operates in a master-slave configuration. When the master switch machine control module detects a serious fault, it degrades to standby mode, and the standby module becomes the master, thus ensuring the normal operation of the switch machine control system. The I-series and II-series switch machine control modules jointly determine the master / standby operating status through inter-system communication.

[0039] Example 2

[0040] Figure 3 is a flowchart of a switch machine control method provided according to an embodiment of this application. This embodiment of the application can be applied to the control of a novel switch machine. The method is executed by the processor in the switch machine control module.

[0041] As shown in Figure 3, the method includes:

[0042] S310. In response to receiving a drive command for the target switch machine from the remote control center, the target switch machine's display signal, status signal, and motor rotor position signal are collected by the dynamic display acquisition unit, monitoring and diagnostic acquisition unit, and shaft angle conversion acquisition unit, respectively.

[0043] S320. Based on the drive command, the indication signal, the status signal, and the motor rotor position signal, control the power conversion isolation unit to output a drive voltage to the target switch machine; wherein, the power required by the power conversion isolation unit is provided by the power supply communication conversion unit; the drive command is transmitted by the power supply communication conversion unit;

[0044] S330. The target switch machine is driven by the driving voltage to control the displacement, speed or torque of the target switch machine motor so that the target switch machine achieves the working state expected by the driving command.

[0045] The drive command instructs the switch machine control module to output a drive voltage to the target switch machine, causing the target switch machine to achieve the operating state expected by the drive command. Optionally, the drive command supports control of the displacement, speed, or torque of the target switch machine motor. The drive command is transmitted by the power supply and communication conversion unit. The power supply and communication conversion unit also provides the power required by the power conversion isolation unit. Optionally, the target switch machine is a novel switch machine that uses a synchronous motor as its power source and internally deploys at least two of the following: an operating position sensor, an indication signal sensor, and a locking position sensor. The switch machine control module is located beside the track, adjacent to the installation position of the target switch machine.

[0046] In an optional embodiment, the remote control center is connected to the processor via the power supply and communication conversion unit using an integrated power supply and communication cable. This integrated power supply and communication cable combines power supply and communication functions, addressing both signal transmission and power supply needs with a single cable. The power supply and communication conversion unit separates power supply and communication functions, transmitting drive commands from the remote control center to the processor and providing the necessary power to the power conversion isolation unit.

[0047] The dynamic representation acquisition unit, the monitoring and diagnosis acquisition unit, and the shaft angle conversion acquisition unit are external signal acquisition units in the switch machine control module. They are used to acquire the representation signal, status signal, and motor rotor position signal of the target switch machine, respectively.

[0048] The signals include: indication of the turnout's position or reverse position, and alarms and indications when the turnout is squeezed or in a "four-way open" position due to some reason. Status signals include the displacement of the straight and curved track indicator rods of the switch machine, locking status, temperature and humidity, switch machine motor output torque, operating current, operating voltage, operating time, main shaft angular displacement, and speed. The shaft angle conversion acquisition unit is used to acquire the motor rotor position signal of the target switch machine. The motor rotor position signal is a key signal in the switch machine motor control, used to determine the motor's rotor position and operating status.

[0049] The processor in the switch machine control module can determine the current operating state of the target switch machine based on indication signals, status signals, and motor rotor position signals. By comparing the current operating state of the target switch machine with the expected operating state of the drive command, the processor controls the power conversion isolation unit to output drive voltage to the target switch machine.

[0050] The target switch machine is driven by a driving voltage to control the displacement, speed or torque of the target switch machine motor, so that the target switch machine achieves the working state expected by the driving command.

[0051] Most existing switch machine control systems use a five-wire system, sharing the motor drive cable and the indicator signal acquisition cable. Therefore, the switch machine motor drive and indicator signal acquisition cannot operate simultaneously; indicator signals cannot be acquired while the motor is driving, and the motor drive must be disconnected when acquiring indicator signals. This application's embodiment adopts a control method that separates the drive and indicator functions. While the external signal acquisition unit acquires signals from the target switch machine, the processor in the switch machine control module can control the power conversion isolation unit to output drive voltage to the target switch machine. This effectively improves the control efficiency of the switch machine.

[0052] This application's technical solution, in response to receiving a drive command for a target switch machine from a remote control center, acquires the target switch machine's display signals, status signals, and motor rotor position signals through a dynamic display acquisition unit, a monitoring and diagnostic acquisition unit, and a shaft angle conversion acquisition unit, respectively. Based on the drive command, display signals, status signals, and motor rotor position signals, the control power conversion isolation unit outputs a drive voltage to the target switch machine. This drive voltage drives the target switch machine to operate, controlling the displacement, speed, or torque of the target switch machine motor to achieve the operating state expected by the drive command. This achieves control over the displacement, speed, or torque of the switch machine motor, providing a switch machine control method adapted to new types of switch machines, which is beneficial for improving the reliability, digitalization, and intelligence level of switch machines.

[0053] In an optional embodiment, controlling the power conversion isolation unit to output a drive voltage to the target switch machine according to the drive command, the indication signal, the status signal, and the motor rotor position signal includes: outputting a pulse modulation signal according to the drive command, the indication signal, and the motor rotor position signal; modulating the drive voltage output by the power conversion isolation unit using the pulse modulation signal, and driving the target switch machine to operate using the modulated drive voltage; detecting the operating status of the target switch machine and the drive voltage and output current of the power conversion isolation unit, and adjusting the drive voltage output by the power conversion isolation unit based on the detection results.

[0054] The power supply and communication conversion unit transmits the power supply to the power conversion isolation output unit, which is a high-voltage input power conversion isolation output unit. The power conversion isolation output unit converts the input high voltage into a drive voltage output through a transformer.

[0055] The pulse modulation signal is used to modulate the drive voltage output by the power conversion isolation unit. Optionally, the pulse modulation signal is PWM (Pulse Width Modulation). The pulse modulation signal is determined by the processor in the switch machine control module based on the drive command, the indication signal, and the motor rotor position signal.

[0056] The current operating state of the target switch machine can be determined by the indication signal, status signal, and motor rotor position signal. The processor in the switch machine control module outputs a pulse-modulated signal after determining whether the target switch machine has reached the operating state expected by the drive command. After modulating the output drive voltage of the target switch machine with the pulse-modulated signal, it is sent to the target switch machine to drive its operation. The operating state of the target switch machine, as well as the drive voltage and output current of the power conversion isolation unit, are detected to determine changes in the target switch machine's operating state. The current amplitude and frequency of the switch machine motor are adjusted through current closed-loop control.

[0057] The above technical solution provides a control scheme for outputting drive voltage from the power conversion isolation unit to the target switch machine. It takes into account that the motor speed and current frequency are proportional, and uses a pulse modulation signal to modulate the drive voltage output by the power conversion isolation unit, thereby realizing frequency conversion control of the target switch machine. This provides technical support for controlling the displacement, speed or torque of the switch machine motor.

[0058] In an optional embodiment, controlling the power conversion isolation unit to output a drive voltage to the target switch machine based on the drive command, the indication signal, the status signal, and the motor rotor position signal includes: parsing the drive command to determine the expected operating state of the drive command; determining the current operating state of the target switch machine based on the indication signal, the status signal, and the motor rotor position signal; determining the external locking state of the target switch machine based on the status signal; if the current operating state of the target switch machine does not match the expected operating state of the drive command, and the external locking state of the target switch machine is normal, then controlling the power conversion isolation unit to output a drive voltage to the target switch machine; if the current operating state of the target switch machine matches the expected operating state of the drive command, and the external locking state of the target switch machine is normal, then controlling the power conversion isolation unit not to output a drive voltage.

[0059] The drive command can be a positioning drive command or a reversing drive command. The processor in the switch machine control module parses the drive command to determine the expected operating state of the target switch machine. The current operating state of the target switch machine can be determined by the target switch machine's indication signal, status signal, and motor rotor position signal. Among them, the status signal is used to determine the external lock-up state of the target switch machine.

[0060] If the current operating state of the target switch does not match the operating state expected by the drive instruction, and the switch's external locking and other states are normal. For example, if the drive instruction is a positioning drive instruction, and the expected operating state is that the target switch is in positioning, but the target switch is currently in the reverse position; or if the drive instruction is a reversing drive instruction, and the expected operating state is that the target switch is in the reverse position, but the target switch is currently in positioning, then the processor in the switch control module will control the power conversion isolation unit to output a drive voltage to the target switch.

[0061] If the current operating state of the target switch matches the expected operating state of the drive command, and the external locking state of the target switch is normal—that is, if the drive command is a positioning drive command and the target switch is also in positioning; or if the drive command is a reversing drive command and the target switch is also in reversing position—then the control power conversion isolation unit will not output drive voltage.

[0062] The above technical solution provides a practical drive voltage control scheme, which can be used to control the drive voltage output by the power conversion isolation unit. It provides technical support for controlling the displacement, speed, or torque of the switch machine motor.

[0063] In an optional embodiment, the method further includes: detecting the output current and drive voltage of the power conversion isolation unit; inputting the output current and drive voltage into a hardware device for detecting overcurrent and overvoltage, and outputting the detection result through the hardware device; if the detection result indicates a fault, blocking the pulse modulation signal output through the hardware device.

[0064] While the power conversion isolation unit outputs a drive voltage to the target switch machine, the output current and drive voltage of the power conversion isolation unit are detected. The output current and drive voltage of the power conversion isolation unit are simultaneously input to hardware devices used for overcurrent and overvoltage detection. The hardware devices can determine whether the power conversion isolation unit has malfunctioned based on the output current and drive voltage, and output the detection result. Optionally, the detection result includes: malfunction and normal operation. If the detection result indicates a malfunction, the processor's pulse modulation signal output is blocked by the hardware devices. The drive voltage output by the power conversion isolation unit is cut off. This achieves reliable hardware protection, thereby improving the safety and reliability of the switch machine control method.

[0065] In an optional embodiment, the method further includes: generating a safety code and sending the safety code to at least two sensors in the target switch machine; wherein the sensors include at least two of an operating position sensor, an indication signal sensor, and a locking position sensor; acquiring the reverse codes output by the at least two sensors to obtain a reverse code acquisition result; and determining the indication signal of the target switch machine based on the reverse code acquisition result.

[0066] The target switch machine is equipped with at least two types of sensors; these sensors include at least two of the following: a moving position sensor, an indication signal sensor, and a locked position sensor. The moving position sensor is used to detect the moving position within the machine, the indication signal sensor is used to detect the indication of the target switch machine, and the locked position sensor is used to detect the locked position. The at least two types of sensors deployed in the target switch machine constitute a dynamic acquisition and indication unit.

[0067] The processor in the switch machine control module sends different safety codes to the sensors in the dynamic acquisition and display unit. The sensors in the dynamic acquisition and display unit generate and output corresponding reverse codes based on these safety codes. The processor then re-acquires the reverse codes output by the sensors to obtain the acquisition result. The processor may or may not be able to acquire the reverse codes output by the sensors. Based on the acquisition result of the reverse codes, the processor can determine the sensor's on / off state, and thus determine the display signal of the target switch machine.

[0068] When the dynamic acquisition and display unit includes an action position sensor, an indication signal sensor, and a locking position sensor, the indication signal of the target switch machine can be determined to be that the target switch machine has been switched to the correct position if and only if the reverse codes of all three sensors are acquired; if the reverse codes of any sensor are not acquired, the indication signal of the target switch machine is determined to be that the target switch machine has not been switched to the correct position.

[0069] The above technical solution avoids short circuits, open circuits, and cross-connection issues by sending different security codes to the sensors in the dynamic acquisition and display unit and then sampling the reverse codes output by the sensors. This helps improve the accuracy of the acquired display signals.

[0070] Figure 4 is a schematic diagram of the dynamic representation acquisition unit structure provided according to an embodiment of this application. Referring to Figure 4, the dynamic representation acquisition unit includes at least two types of sensors deployed in the target switch machine. The sensors can be action position sensors, indication signal sensors, or locking position sensors.

[0071] Referring to Figure 4, the dynamic representation acquisition unit includes at least two sensors deployed in the target switch machine, as well as an optocoupler. Processor 1 outputs an coded signal and transmits it to the sensors in the target switch machine via the optocoupler. The sensors in the target switch machine generate and output a reverse code based on the coded signal, and input the reverse code to processor 1 and processor 2 respectively via the optocoupler. Processor 1 and processor 2 can determine the representation signal of the target switch machine based on the acquisition results of the reverse code.

[0072] In an optional embodiment, the switch machine control module has two processors, namely processor 1 and processor 2; correspondingly, the dynamic representation acquisition unit, the monitoring and diagnostic acquisition unit, and the shaft angle conversion acquisition unit each include: dynamic representation acquisition unit 1 and dynamic representation acquisition unit 2, monitoring and diagnostic acquisition unit 1 and monitoring and diagnostic acquisition unit 2, and shaft angle conversion acquisition unit 1 and shaft angle conversion acquisition unit 2; wherein, the dynamic representation acquisition unit 1, the monitoring and diagnostic acquisition unit 1, and the shaft angle conversion acquisition unit 1 are connected to processor 1; the dynamic representation acquisition unit 2, the monitoring and diagnostic acquisition unit 2, and the shaft angle conversion acquisition unit 2 are connected to processor 2; processor 1 is also connected to processor 2, the power conversion isolation unit, the power supply and communication conversion unit, and the remote control center; processor 2 is also connected to the power conversion isolation unit, the power supply and communication conversion unit, and the remote control center;

[0073] The method further includes: comparing the representation signals acquired by the dynamic representation acquisition unit 1 and the dynamic representation acquisition unit 2, the status signals acquired by the monitoring and diagnostic acquisition unit 1 and the monitoring and diagnostic acquisition unit 2, and the motor rotor position signals acquired by the shaft angle conversion acquisition unit 1 and the shaft angle conversion acquisition unit 2, respectively, to obtain a signal comparison result; comparing the drive command obtained by the other party from the remote control center with the drive command obtained by itself from the remote control center, to obtain a command comparison result; if the signal comparison result or the command comparison result is inconsistent, controlling the power conversion isolation unit not to output drive voltage.

[0074] Under normal operation of the switch machine control system, the drive commands obtained by processor 1 and processor 2 from the remote control center should be consistent. The representation signals acquired by dynamic representation acquisition unit 1 and dynamic representation acquisition unit 2 should be consistent. The status signals acquired by monitoring and diagnostic acquisition unit 1 and monitoring and diagnostic acquisition unit 2 should be consistent. The motor rotor position signals acquired by shaft angle conversion acquisition unit 1 and shaft angle conversion acquisition unit 2 should also be consistent.

[0075] If any set of data is inconsistent—that is, if the signal comparison result or the command comparison result is inconsistent—it indicates a problem with the switch machine control system. The control power conversion isolation unit does not output drive voltage to ensure the reliability of the switch machine control system.

[0076] It is worth noting that although the switch machine control method and switch machine control system provided in this application embodiment are adapted to control new switch machines, they can also be used to control existing switch machines. Since existing switch machines are difficult to control the motor torque, speed and displacement due to the inherent structural characteristics of their motors, the shaft angle conversion acquisition unit in the switch machine control system provided in this application embodiment can be disabled, and the existing switch machine can be controlled by the switch machine control system sending drive voltage to the existing switch machine.

[0077] It should be understood that the various forms of processes shown above can be used to rearrange, add, or delete steps. For example, the steps described in this application can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this application can be achieved, and this is not limited herein.

[0078] The specific embodiments described above do not constitute a limitation on the scope of protection of this application. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A switch machine control method, characterized in that, The method is executed by a processor in the switch machine control module, and the method includes: In response to receiving a drive command for the target switch machine from the remote control center, the dynamic representation acquisition unit, the monitoring and diagnostic acquisition unit, and the shaft angle conversion acquisition unit respectively acquire the representation signal, status signal, and motor rotor position signal of the target switch machine; Based on the drive command, the indication signal, the status signal, and the motor rotor position signal, the power conversion isolation unit is controlled to output a drive voltage to the target switch machine; wherein, the power required by the power conversion isolation unit is provided by the power supply communication conversion unit; the drive command is transmitted by the power supply communication conversion unit. The target switch machine is driven by the driving voltage to control the displacement, speed or torque of the target switch machine motor so that the target switch machine achieves the working state expected by the driving command.

2. The method according to claim 1, characterized in that, The step of controlling the power conversion isolation unit to output a drive voltage to the target switch machine according to the drive command, the indication signal, the status signal, and the motor rotor position signal includes: Based on the drive command, the indication signal, and the motor rotor position signal, a pulse modulation signal is output; The pulse modulation signal is used to modulate the drive voltage output by the power conversion isolation unit, and the modulated drive voltage is used to drive the target switch machine to operate. The operating status of the target switch machine and the driving voltage and output current of the power conversion isolation unit are detected, and the driving voltage output by the power conversion isolation unit is adjusted based on the detection results.

3. The method according to claim 1, characterized in that, The step of controlling the power conversion isolation unit to output a drive voltage to the target switch machine according to the drive command, the indication signal, the status signal, and the motor rotor position signal includes: The driving instructions are parsed to determine the expected working state of the driving instructions; Based on the indication signal, the status signal, and the motor rotor position signal, the current working state of the target switch machine is determined; Based on the status signal, the external lock-up status of the target switch machine is determined; If the current working state of the target switch does not match the working state expected by the drive command, and the external locking state of the target switch is normal, then control the power conversion isolation unit to output drive voltage to the target switch. If the current working state of the target switch machine matches the working state expected by the drive command, and the external locking state of the target switch machine is normal, then the power conversion isolation unit is controlled not to output drive voltage.

4. The method according to claim 1, characterized in that, The remote control center is connected to the processor via the power supply and communication conversion unit using an integrated power supply and communication cable.

5. The method according to claim 1, characterized in that, The method further includes: Detect the output current and drive voltage of the power conversion isolation unit; The output current and the driving voltage are input to a hardware device for detecting overcurrent and overvoltage, and the detection results are output through the hardware device. If the detection result indicates a fault, the pulse modulation signal output is blocked by the hardware device.

6. The method according to claim 1, characterized in that, The method further includes: A safety code is generated and sent to at least two types of sensors in the target switch machine; wherein the sensors include at least two types of an operating position sensor, an indication signal sensor, and a locking position sensor; The inverse codes output by the at least two sensors are collected to obtain the inverse code collection results; Based on the acquisition results of the reverse encoding, the representation signal of the target switch machine is determined.

7. The method according to claim 1, characterized in that, The switch machine control module has two processors, namely processor 1 and processor 2; correspondingly, the dynamic representation acquisition unit, the monitoring and diagnostic acquisition unit, and the shaft angle conversion acquisition unit each include: dynamic representation acquisition unit 1 and dynamic representation acquisition unit 2, monitoring and diagnostic acquisition unit 1 and monitoring and diagnostic acquisition unit 2, and shaft angle conversion acquisition unit 1 and shaft angle conversion acquisition unit 2; wherein, dynamic representation acquisition unit 1, monitoring and diagnostic acquisition unit 1, and shaft angle conversion acquisition unit 1 are connected to processor 1; dynamic representation acquisition unit 2, monitoring and diagnostic acquisition unit 2, and shaft angle conversion acquisition unit 2 are connected to processor 2; processor 1 is also connected to processor 2, the power conversion isolation unit, the power supply and communication conversion unit, and the remote control center; processor 2 is also connected to the power conversion isolation unit, the power supply and communication conversion unit, and the remote control center; the method further includes: By comparing the representation signals acquired by the dynamic representation acquisition unit 1 and the dynamic representation acquisition unit 2 with the status signals acquired by the monitoring and diagnostic acquisition unit 1 and the monitoring and diagnostic acquisition unit 2, as well as the motor rotor position signals acquired by the shaft angle conversion acquisition unit 1 and the shaft angle conversion acquisition unit 2, a signal comparison result is obtained. The processor 1 and the processor 2 compare the driving instructions obtained by the other party from the remote control center with the driving instructions obtained by themselves from the remote control center to obtain the instruction comparison result. If the signal comparison result or the command comparison result is inconsistent, the power conversion isolation unit is controlled not to output the drive voltage.

8. A switch machine control system, characterized in that, The system includes: a switch machine control module, a target switch machine, and a remote control center; wherein, the switch machine control module includes processor 1 and processor 2, an external signal acquisition unit, a power supply and communication conversion unit, and a power conversion and isolation unit; The remote control center is connected to the processor 1 and processor 2 respectively via the power supply and communication conversion unit using an integrated power supply and communication cable; the power supply and communication conversion unit is also connected to the power conversion isolation unit; the power supply and communication conversion unit is used to separate power supply and communication, and is used to transmit the drive commands issued by the remote control center to the processor 1 and processor 2, and to provide the required power to the power conversion isolation unit; The external signal acquisition unit includes a dynamic representation acquisition unit, a monitoring and diagnostic acquisition unit, and a shaft angle conversion acquisition unit; wherein, the dynamic representation acquisition unit is used to acquire the representation signal of the target switch machine; the monitoring and diagnostic acquisition unit is used to acquire the status signal of the target switch machine; and the shaft angle conversion acquisition unit is used to acquire the motor rotor position signal of the target switch machine. The dynamic representation acquisition unit, the monitoring and diagnostic acquisition unit, and the shaft angle conversion acquisition unit each include: dynamic representation acquisition unit 1 and dynamic representation acquisition unit 2, monitoring and diagnostic acquisition unit 1 and monitoring and diagnostic acquisition unit 2, and shaft angle conversion acquisition unit 1 and shaft angle conversion acquisition unit 2; wherein, dynamic representation acquisition unit 1, monitoring and diagnostic acquisition unit 1, and shaft angle conversion acquisition unit 1 are respectively connected to the target switch machine and the processor 1; dynamic representation acquisition unit 2, monitoring and diagnostic acquisition unit 2, and shaft angle conversion acquisition unit 2 are respectively connected to the target switch machine and the processor 2; The power conversion isolation unit is connected to the processor 1, the processor 2 and the power supply and communication conversion unit respectively. The power conversion isolation unit is used to output a driving voltage to the target switch to drive the target switch to operate. The processor 1 and the processor 2 are used to execute the switch machine control method according to any one of claims 1-7.

9. The system according to claim 8, characterized in that, The system includes at least two switch machine control modules, which operate in a master-slave mode. The master switch machine control module controls the power conversion isolation unit to output a drive voltage to the target switch machine. The external signal acquisition units in both the master and backup switch machine control modules acquire signals from the target switch machine.

10. The system according to claim 8, characterized in that, The target switch machine uses a synchronous motor as its power source and is equipped with at least two of the following: an action position sensor, an indication signal sensor, and a locking position sensor.

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