Switch machine control method and system

Abstract

The invention discloses a point switch control method, which is executed by a processor in a point switch control module, and comprises the following steps of: responding to a driving instruction aiming at a target point switch received from a remote control center; a dynamic representation acquisition unit, a monitoring diagnosis acquisition unit and a shaft angle conversion acquisition unit are used for respectively acquiring representation signals, state signals and motor rotor position signals of a target switch machine; controlling a power conversion isolation unit to output a driving voltage to the target switch machine according to the driving instruction, the representation signal, the state signal and the motor rotor position signal; and driving the target switch machine to act by adopting the driving voltage so as to control the displacement, the rotating speed or the torque of a motor of the target switch machine, so that the target switch machine reaches a working state expected by the driving instruction. According to the technical scheme, the displacement, the rotating speed or the torque of the motor of the switch machine can be accurately controlled. And the reliability, the digitization level and the intelligence level of the switch machine can be improved.

Description

Technical Field

[0001] This application relates to the technical field of switch machine control. Specifically, this application relates to a method and system for controlling a switch machine. Background Art

[0002] A switch machine is a key basic device for railway turnout conversion, and its main function is to convert the turnout to the normal position or reverse position. Most existing switch machines use three-phase AC asynchronous motors, ordinary carbon brushes or brushless series-excited DC motors as power sources, and achieve the positioning and reverse position drive control of the switch machine by controlling the forward and reverse rotation of the motor. The existing switch machines adopt the electric concentration control method.

[0003] With the gradual development of the digital and intelligent research of switch machines, new switch machines use synchronous motors to replace three-phase AC asynchronous motors, ordinary carbon brushes or brushless series-excited DC motors as power sources. Multiple sensors are deployed in the new switch machines to replace the electrical contacts inside the existing switch machines, and the control method has changed from electric concentration control to communication control.

[0004] The switch machine control method used by existing switch machines is no longer applicable to new switch machines. Designing a switch machine control method applicable to 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 intelligent level of the switch machine. Summary of the Invention

[0005] This application provides a method and system for controlling a switch machine, which can achieve precise control of the displacement, speed or torque of the switch machine motor, and achieve the purpose of improving the reliability, digitalization and intelligent level of the switch machine.

[0006] According to the first aspect of this application, a method for controlling a switch machine is provided. The method is executed by a processor in a switch machine control module, and the method includes:

[0007] In response to receiving a drive instruction for a target switch machine from a remote control center, respectively collect the representation signal, status signal and motor rotor position signal of the target switch machine through a dynamic representation acquisition unit, a monitoring and diagnosis acquisition unit and an axis angle conversion acquisition unit;

[0008] According to the drive instruction, the representation 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 a power supply communication conversion unit; the drive instruction is transmitted by the power supply communication conversion unit;

[0009] Drive the target switch machine with the described drive voltage to control the displacement, rotation speed or torque of the motor of the target switch machine so that the target switch machine achieves the working state expected by the drive instruction.

[0010] According to the second aspect of the present application, 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 a processor 1 and a processor 2, an external signal acquisition unit, a power supply communication conversion unit and a power conversion isolation unit;

[0011] The remote control center is connected to the processor 1 and the processor 2 respectively through the power supply communication conversion unit using a power supply communication integrated cable; the power supply communication conversion unit is also connected to the power conversion isolation unit; the power supply communication conversion unit is used for splitting power supply and communication, and the power supply communication conversion unit is used to transmit the drive instruction sent by the remote control center to the processor 1 and the processor 2, and provide the required power supply for the power conversion isolation unit;

[0012] The external signal acquisition unit includes a dynamic indication acquisition unit, a monitoring and diagnosis acquisition unit and an axis angle conversion acquisition unit; wherein, the dynamic indication acquisition unit is used to acquire the indication signal of the target switch machine; the monitoring and diagnosis acquisition unit is used to acquire the status signal of the target switch machine; the axis angle conversion acquisition unit is used to acquire the motor rotor position signal of the target switch machine;

[0013] The dynamic indication acquisition unit, the monitoring and diagnosis acquisition unit and the axis angle conversion acquisition unit respectively include: a dynamic indication acquisition unit 1 and a dynamic indication acquisition unit 2, a monitoring and diagnosis acquisition unit 1 and a monitoring and diagnosis acquisition unit 2, an axis angle conversion acquisition unit 1 and an axis angle conversion acquisition unit 2; wherein, the dynamic indication acquisition unit 1, the monitoring and diagnosis acquisition unit 1 and the axis angle conversion acquisition unit 1 are respectively connected to the target switch machine and the processor 1; the dynamic indication acquisition unit 2, the monitoring and diagnosis acquisition unit 2 and the axis angle conversion acquisition unit 2 are respectively connected to the target switch machine and the processor 2;

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

[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 the present application.

[0016] In the technical solution of this application, in response to receiving a driving instruction for a target switch machine from a remote control center, a dynamic indication acquisition unit, a monitoring and diagnosis acquisition unit, and an axis angle conversion acquisition unit are used to respectively acquire the indication signal, status signal, and motor rotor position signal of the target switch machine; according to the driving instruction, indication signal, status signal, and motor rotor position signal, the power conversion isolation unit is controlled to output a driving voltage to the target switch machine; the driving voltage is used to drive the target switch machine to act, so as to control the displacement, rotation speed, or torque of the target switch machine motor to make the target switch machine reach the working state expected by the driving instruction. The control of the displacement, rotation speed, or torque of the switch machine motor is realized, and a switch machine control method adapted to a new type of switch machine is provided, which is beneficial to improving the reliability, digitization, and intelligence level of the switch machine.

[0017] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of this application, nor is it used to limit the scope of this application. Other features of this application will become easily understood through the following description. Brief Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of this application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of this application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

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

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

[0021] Figure 3 It is a flowchart of a switch machine control method provided according to the embodiments of this application;

[0022] Figure 4 It is a schematic structural diagram of a dynamic indication acquisition unit provided according to the embodiments of this application. Detailed Embodiments

[0023] In order to enable those skilled in the art to better understand the solution of this application, the following will clearly and completely describe the technical solutions in the embodiments of this application with reference to the drawings in the embodiments of this application. Obviously, the described embodiments are only some embodiments of this application, rather than all embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0024] It should be noted that the terms "first", "second", "target", "candidate", etc. in the description, claims and the above-mentioned drawings of this application are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of this application described here can be implemented in an order other than those illustrated or described here. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily limit to those clearly listed steps or units, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0025] Embodiment 1

[0026] With the gradual development of the digital and intelligent research of the switch machine, the new switch machine uses a synchronous motor to replace the three-phase AC asynchronous motor, the ordinary carbon brush or the brushless DC motor with series excitation as the power source. Multiple sensors are deployed in the new switch machine to replace the electrical contacts inside the existing switch machine, and the control method has changed from centralized electrical control to communication control.

[0027] For the new switch machine, the embodiment of this application provides a switch machine control system. Figure 1 It is a schematic structural diagram of the switch machine control system provided according to Embodiment 1. Refer to Figure 1 , the switch machine control system includes:

[0028] A switch machine control module, a target switch machine and a remote control center. Optionally, the target switch machine is a new switch machine that uses a synchronous motor as the power source and is internally equipped with at least two of an action position sensor, a representation signal sensor and a locking position sensor. The switch machine control module is set beside the track and adjacent to the installation position of the target switch machine.

[0029] The switch machine control module is connected to the remote control center by a power supply and communication integrated cable. Among them, the power supply and communication integrated cable is a cable that integrates power supply and communication functions, and solves the two requirements of signal transmission and power supply through one cable.

[0030] Continue to refer to Figure 1 , the switch machine control module includes a processor 1 and a 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 the processor 2 respectively through the power supply and communication integrated cable by the power supply and communication conversion unit; the power supply and communication conversion unit is also connected to the power conversion and isolation unit; the power supply and communication conversion unit is used for splitting power supply and communication, and the power supply and communication conversion unit is used to transmit the drive instructions sent by the remote control center to the processor 1 and the processor 2, and provide the required power supply for the power conversion and isolation unit;

[0032] Optionally, the processor 1 and the processor 2 report the signals collected from the target switch machine to the remote control center through the power supply and communication integrated 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 indication acquisition unit, a monitoring and diagnosis acquisition unit, and an axis angle conversion acquisition unit; wherein, the dynamic indication acquisition unit is used to acquire the indication signal of the target switch machine; the monitoring and diagnosis acquisition unit is used to acquire the status signal of the target switch machine; the axis angle conversion acquisition unit is used to acquire the motor rotor position signal of the target switch machine;

[0034] The dynamic indication acquisition unit, the monitoring and diagnosis acquisition unit, and the axis angle conversion acquisition unit respectively include: a dynamic indication acquisition unit 1 and a dynamic indication acquisition unit 2, a monitoring and diagnosis acquisition unit 1 and a monitoring and diagnosis acquisition unit 2, an axis angle conversion acquisition unit 1 and an axis angle conversion acquisition unit 2; wherein, the dynamic indication acquisition unit 1, the monitoring and diagnosis acquisition unit 1, and the axis angle conversion acquisition unit 1 are respectively connected to the target switch machine and the processor 1; the dynamic indication acquisition unit 2, the monitoring and diagnosis acquisition unit 2, and the axis angle conversion acquisition unit 2 are respectively connected to the target switch machine and the processor 2;

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

[0036] The switch machine control logic provided by the embodiments of the present application is deployed in both the processor 1 and the processor 2, and the switch machine control method provided by the embodiments of the present application can be executed. For the explanation of the switch machine control method, please refer to the description of Embodiment 2 of the present application, which will not be elaborated here.

[0037] Figure 2 Another structural schematic diagram of a switch machine control system provided according to Embodiment 1 of the present application. Refer 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 primary / backup mode. The primary 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 primary switch machine control module and the backup switch machine control module collect signals from the target switch machine, including the indication signal, status signal, and motor rotor position signal of the target switch machine.

[0038] Figure 2 Figure 4 shows a case where the switch machine control system includes two switch machine control modules. Refer to Figure 2 , the two switch machine control modules can be respectively referred to as the Series I switch machine control module and the Series II switch machine control module. The hardware circuits of the Series I switch machine control module and the Series II switch machine control module are exactly the same, and either series can work independently. The dual series operate in a primary / backup mode. When the primary switch machine control module detects a serious fault, it steps down and waits, while the backup steps up to become the primary, thus ensuring the normal execution of the functions of the switch machine control system. The Series I switch machine control module and the Series II switch machine control module jointly determine the primary / backup working status through inter-series communication.

[0039] Embodiment 2

[0040] Figure 3 FIG. 13 is a flowchart of a switch machine control method provided according to an embodiment of the present application. The embodiment of the present application is applicable to the situation of controlling a new type of switch machine, and the method is executed by a processor in the switch machine control module.

[0041] As Figure 3 shown in FIG. 14, the method includes:

[0042] S310. In response to receiving a drive instruction for a target switch machine from a remote control center, collect the indication signal, status signal, and motor rotor position signal of the target switch machine through a dynamic indication acquisition unit, a monitoring and diagnosis acquisition unit, and an axis angle conversion acquisition unit respectively;

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

[0044] S330. Drive the target switch machine to act with the drive voltage to control the displacement, speed, or torque of the motor of the target switch machine so that the target switch machine reaches the working state expected by the drive instruction.

[0045] Among them, the drive instruction is used to instruct the switch machine control module to output a drive voltage to the target switch machine so that the target switch machine achieves the working state expected by the drive instruction. Optionally, the drive instruction supports controlling the displacement, rotation speed or torque of the motor of the target switch machine. The drive instruction is transmitted by the power supply communication conversion unit. The power supply communication conversion unit is also used to provide the required power supply for the power conversion isolation unit. Optionally, the target switch machine is a new type of switch machine that uses a synchronous motor as a power source and is internally equipped with at least two of an action position sensor, a representation signal sensor, and a locking position sensor. The switch machine control module is arranged beside the track and 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 communication conversion unit using an integrated power supply and communication cable. Among them, the integrated power supply and communication cable is a cable that integrates power supply and communication functions, and can solve the two requirements of signal transmission and power supply through one cable. The power supply communication conversion unit is used for splitting power supply and communication. The power supply communication conversion unit is used to transmit the drive instruction sent by the remote control center to the processor and provide the required power supply for 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, and are respectively used to acquire the representation signal, the status signal, and the motor rotor position signal of the target switch machine.

[0048] Among them, the representation signal includes: the normal position or reverse position representation of the switch, and the alarm and representation when the switch is squeezed or in the "four-open" position due to reasons. The status signal includes the displacement of the straight and curved stock indication rods of the switch machine, the locking state, the temperature and humidity, the output torque, the working current, the working voltage, the action time, the main shaft angle displacement, the speed, etc. of the switch machine motor. The shaft angle conversion acquisition unit is used to acquire the motor rotor position signal of the target switch machine. Among them, the motor rotor position signal is a key signal in the control of the switch machine motor and is used to determine the rotor position and operating state of the motor.

[0049] The processor in the switch machine control module can determine the current working state of the target switch machine based on the representation signal, the status signal, and the motor rotor position signal. The processor controls the power conversion isolation unit to output a drive voltage to the target switch machine by comparing the current working state of the target switch machine with the working state expected by the drive instruction.

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

[0051] Most of the switch machine control systems of existing switch machines adopt a five-wire system, where the motor drive cable and the indication signal acquisition cable are shared. Therefore, the drive of the switch machine motor and the acquisition of the indication signal of the switch machine cannot work simultaneously. When the motor is driven, the indication signal cannot be acquired, and when the indication signal is acquired, the motor drive needs to be cut off. The control method adopted in the embodiment of the present application is to separate the drive and the indication. 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 a drive voltage to the target switch machine. This effectively improves the control efficiency of the switch machine.

[0052] In the technical solution of the present application, in response to receiving a drive instruction for a target switch machine from a remote control center, the indication signal, the status signal, and the motor rotor position signal of the target switch machine are respectively acquired through a dynamic indication acquisition unit, a monitoring and diagnosis acquisition unit, and an axis angle conversion acquisition unit; according to the drive instruction, 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; the target switch machine is driven to act by using the drive voltage to control the displacement, speed, or torque of the target switch machine motor so that the target switch machine reaches the working state expected by the drive instruction. The control of the displacement, speed, or torque of the switch machine motor is realized, and a switch machine control method adapted to a new type of switch machine is provided, which is beneficial to improving the reliability, digitization, and intelligent level of the switch machine.

[0053] In an optional embodiment, the controlling the power conversion isolation unit to output a drive voltage to the target switch machine according to the drive instruction, the indication signal, the status signal, and the motor rotor position signal includes: outputting a pulse modulation signal according to the drive instruction, the indication signal, and the motor rotor position signal; modulating the drive voltage output by the power conversion isolation unit by using the pulse modulation signal, and driving the target switch machine to act by using the modulated drive voltage; detecting the working state 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 result.

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

[0055] Among them, 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), that is, pulse width modulation. The pulse modulation signal is determined by the processor in the switch machine control module according to the drive instruction, the indication signal, and the motor rotor position signal.

[0056] The indication signal, status signal, and motor rotor position signal can determine the current working state of the target switch machine. The processor in the switch machine control module outputs a pulse modulation signal by determining whether the target switch machine has reached the working state expected by the drive instruction. After modulating the drive voltage output to the target switch machine using the pulse modulation signal, it is delivered to the target switch machine to drive the target switch machine to act. Detect the working state of the target switch machine, as well as the drive voltage and output current of the power conversion isolation unit, determine the change in the working state of the target switch machine, and adjust the current amplitude and motor frequency of the switch machine motor through current closed-loop control.

[0057] The above technical solution provides a control solution for the power conversion isolation unit to output a drive voltage to the target switch machine. Considering that the motor speed is proportional to the current frequency, the drive voltage output by the power conversion isolation unit is modulated using a pulse modulation signal, achieving variable frequency control of the target switch machine, and providing 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 according to the drive instruction, the indication signal, the status signal, and the motor rotor position signal includes: parsing the drive instruction to determine the working state expected by the drive instruction; determining the current working 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 switch machine of the target switch machine based on the status signal; if the current working state of the target switch machine does not match the working state expected by the drive instruction and the external locking state of the switch machine of the target switch machine is normal, then control the power conversion isolation unit to output a drive voltage to the target switch machine; if the current working state of the target switch machine matches the working state expected by the drive instruction and the external locking state of the switch machine of the target switch machine is normal, then control the power conversion isolation unit not to output a drive voltage.

[0059] The drive instruction can be a positioning drive instruction or a reverse position drive instruction. The processor in the switch machine control module parses the drive instruction to determine the working state expected by the target switch machine. The current working state of the target switch machine can be determined by the indication signal, status signal, and motor rotor position signal of the target switch machine. Among them, the status signal is used to determine the external locking state of the switch machine of the target switch machine.

[0060] If the current working state of the target switch machine does not match the working state expected by the drive command, and the external locking state of the switch machine is normal. For example, the drive command is a positioning drive command, and the expected working state of the drive command is that the target switch machine is in the positioning state, but the current working state of the target switch machine is that the target switch machine is in the reverse position. Or, the drive command is a reverse position drive command, and the expected working state of the drive command is that the target switch machine is in the reverse position, but the current working state of the target switch machine is that the target switch machine is in the positioning state. Then the processor in the switch machine control module controls the power conversion isolation unit to output a drive voltage to the target switch machine.

[0061] 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. That is, when the drive command is a positioning drive command, the target switch machine is also in the positioning state. Or, when the drive command is a reverse position drive command, the target switch machine is also in the reverse position. Then the power conversion isolation unit is controlled not to output a drive voltage.

[0062] The above technical solution provides a practical drive voltage control solution, 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 the drive voltage into a hardware device for detecting overcurrent and overvoltage, and outputting a detection result through the hardware device; if the detection result is a fault, then blocking the output of the pulse modulation signal 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 into a hardware device for detecting overcurrent and overvoltage. The hardware device can determine whether the power conversion isolation unit fails according to the output current and drive voltage of the power conversion isolation unit, and output a detection result. Optionally, the detection result includes: a fault occurs and the operation is normal. If the detection result is a fault, then block the output of the pulse modulation signal of the processor through the hardware device. Cut off the drive voltage output by the power conversion isolation unit. Realize 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 security code and sending the security code to at least two types of sensors in the target switch machine; where at least two types of sensors include at least two of a moving position sensor, an indication signal sensor, and a locking position sensor; collecting the reverse codes output by the at least two types of sensors to obtain a collection result of the reverse codes; and determining the indication signal of the target switch machine according to the collection result of the reverse codes.

[0066] At least two types of sensors are deployed in the target switch machine; where at least two types of sensors include at least two of a moving position sensor, an indication signal sensor, and a locking position sensor. The moving position sensor is used to detect the in-machine moving position, the indication signal sensor is used to detect the indication of the target switch machine, and the locking position sensor is used to detect the locking position. Deploying at least two types of sensors in the target switch machine belongs to the dynamic collection indication unit.

[0067] The processor in the switch machine control module sends different security codes to the sensors in the dynamic collection indication unit, and the sensors in the dynamic collection indication unit generate and output corresponding reverse codes based on the different security codes sent by the processor. The processor recollects the reverse codes output by the sensors to obtain a collection result of the reverse codes. The processor may or may not be able to collect the reverse codes output by the sensors. The processor can determine the sensor conduction state according to the collection result of the reverse codes, and further can determine the indication signal of the target switch machine.

[0068] In the case where the dynamic collection indication unit includes a moving position sensor, an indication signal sensor, and a locking position sensor at the same time, when and only when the reverse codes of the three sensors are recollected, it can be determined that the indication signal of the target switch machine is that the target switch machine has been switched in place; if the reverse codes of any sensor are not collected, it is determined that the indication signal of the target switch machine is that the target switch machine has not been switched in place.

[0069] Through the above technical solution, by sending different security codes to the sensors in the dynamic collection indication unit and recollecting the reverse codes output by the sensors, problems such as short circuit, open circuit, and wire mixing can be avoided. It is beneficial to improve the accuracy of indication signal collection.

[0070] Figure 4 It is a schematic diagram of the structure of the dynamic indication collection unit provided according to the embodiments of the present application. Refer to Figure 4 , the dynamic indication collection unit includes at least two types of sensors deployed in the target switch machine. The sensors can be a moving position sensor, an indication signal sensor, or a locking position sensor.

[0071] Refer to Figure 4, dynamically indicate that in addition to at least two types of sensors deployed in the target switch machine, the acquisition unit further includes an opto-coupler. The processor 1 outputs an encoded signal and sends the encoded signal to the sensors in the target switch machine through the opto-coupler. The sensors in the target switch machine generate and output a reverse code based on the encoded signal, and input the reverse code into the processor 1 and the processor 2 respectively through the opto-coupler. The processor 1 and the processor 2 can determine the indication signal of the target switch machine according to the feedback result of the reverse code.

[0072] In an optional embodiment, there are two processors in the switch machine control module, namely processor 1 and processor 2; correspondingly, the dynamic indication acquisition unit, the monitoring and diagnosis acquisition unit, and the shaft angle conversion acquisition unit respectively include: dynamic indication acquisition unit 1 and dynamic indication acquisition unit 2, monitoring and diagnosis acquisition unit 1 and monitoring and diagnosis acquisition unit 2, shaft angle conversion acquisition unit 1 and shaft angle conversion acquisition unit 2; wherein, the dynamic indication acquisition unit 1, the monitoring and diagnosis acquisition unit 1, and the shaft angle conversion acquisition unit 1 are connected to the processor 1; the dynamic indication acquisition unit 2, the monitoring and diagnosis acquisition unit 2, and the shaft angle conversion acquisition unit 2 are connected to the processor 2; the processor 1 is further connected to the processor 2, the power conversion isolation unit, the power supply communication conversion unit, and the remote control center; the processor 2 is further connected to the power conversion isolation unit, the power supply communication conversion unit, and the remote control center;

[0073] The method further includes: respectively comparing, by the processor 1 and the processor 2, the indication signals collected by the dynamic indication acquisition unit 1 and the dynamic indication acquisition unit 2, the status signals collected by the monitoring and diagnosis acquisition unit 1 and the monitoring and diagnosis acquisition unit 2, and the motor rotor position signals collected by the shaft angle conversion acquisition unit 1 and the shaft angle conversion acquisition unit 2, to obtain a signal comparison result; comparing, by the processor 1 and the processor 2, the drive instructions obtained by each other from the remote control center with the drive instructions obtained by itself from the remote control center, to obtain an instruction comparison result; if the signal comparison result or the instruction comparison result is inconsistent, then control the power conversion isolation unit not to output a drive voltage.

[0074] When the switch machine control system is operating normally, the drive instructions obtained by the processor 1 and the processor 2 from the remote control center should be the same. The indication signals collected by the dynamic indication acquisition unit 1 and the dynamic indication acquisition unit 2 should be the same. The status signals collected by the monitoring and diagnosis acquisition unit 1 and the monitoring and diagnosis acquisition unit 2 should be the same. The motor rotor position signals collected by the shaft angle conversion acquisition unit 1 and the shaft angle conversion acquisition unit 2 should also be the same.

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

[0076] It should be noted that although the switch machine control method and the switch machine control system provided in the embodiments of the present application are adapted to control a new type of switch machine, they can also be used to control an existing switch machine. Since it is difficult to control the torque, speed, and displacement of the switch machine motor due to the structural characteristics of the motor of the existing switch machine, the shaft angle conversion acquisition unit in the switch machine control system provided in the embodiments of the present application can be deactivated, and the existing switch machine can be controlled by sending a driving voltage to the existing switch machine through the switch machine control system.

[0077] It should be understood that the various forms of the processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in the present application can be executed in parallel, sequentially, or in a different order, as long as the desired results of the technical solution of the present application can be achieved, and no limitations are imposed herein.

[0078] The above specific embodiments do not constitute a limitation on the protection scope of the present 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 the present application shall be included within the protection scope of the present application.

Claims

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

2. The method according to claim 1, characterized in that The method of controlling the power conversion isolation unit to output a driving voltage to the target switch machine according to the driving instruction, the indication signal, the state signal and the motor rotor position signal comprises: Outputting a pulse modulation signal according to the drive instruction, the indication signal and the motor rotor position signal; The pulse modulation signal is used to modulate the driving voltage output by the power conversion isolation unit, and the modulated driving voltage is used to drive the target switch machine to operate; The working state 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 result.

3. The method according to claim 1, characterized in that The method of controlling the power conversion isolation unit to output a driving voltage to the target switch machine according to the driving instruction, the indication signal, the state signal and the motor rotor position signal comprises: Parsing the driving instruction to determine the expected working state of the driving instruction; Determine the current working state of the target switch machine based on the indication signal, the state signal and the motor rotor position signal; Based on the state signal, determining the switch machine external locking state of the target switch machine; If the current working state of the target switch machine does not match the working state expected by the driving instruction, and the switch machine external locking state of the target switch machine is normal, then controlling the power conversion isolation unit to output a driving voltage to the target switch machine; If the current working state of the target switch machine matches the working state expected by the driving instruction, and the external locking state of the target switch machine is normal, the power conversion isolation unit is controlled not to output the driving 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 a power supply and communication integrated cable.

5. The method according to claim 1, characterized in that The method further comprises: Detecting the output current and driving voltage of the power conversion isolation unit; Inputting the output current and the driving voltage into a hardware device for detecting overcurrent and overvoltage, and outputting the detection result through the hardware device; If the detection result is that a fault occurs, the pulse modulation signal output is blocked by the hardware device.

6. The method according to claim 1, characterized in that The method further comprises: Generate a security code, and send the security code to at least two sensors in the target switch machine; wherein the sensors include at least two of an action position sensor, a display signal sensor, and a locking position sensor; Collecting reverse codes output by the at least two sensors to obtain reverse code collection results; According to the acquisition result of the reverse coding, the representation signal of the target switch machine is determined.

7. The method according to claim 1, characterized in that There are two processors in the switch machine control module, namely processor 1 and processor 2; accordingly, the dynamic representation acquisition unit, the monitoring and diagnosis acquisition unit and the shaft angle conversion acquisition unit respectively include: dynamic representation acquisition unit 1 and dynamic representation acquisition unit 2, monitoring and diagnosis acquisition unit 1 and monitoring and diagnosis acquisition unit 2, shaft angle conversion acquisition unit 1 and shaft angle conversion acquisition unit 2; wherein, the dynamic representation acquisition unit 1, the monitoring and diagnosis acquisition unit 1 and the shaft angle conversion acquisition unit 1 are connected to the processor 1; the dynamic representation acquisition unit 2, the monitoring and diagnosis acquisition unit 2 and the shaft angle conversion acquisition unit 2 are connected to the processor 2; the processor 1 is also connected to the processor 2, the power conversion isolation unit, the power supply communication conversion unit and the remote control center; the processor 2 is also connected to the power conversion isolation unit, the power supply communication conversion unit and the remote control center; the method also includes: By comparing the representation signals collected by the dynamic representation acquisition unit 1 and the dynamic representation acquisition unit 2, the state signals collected by the monitoring diagnosis acquisition unit 1 and the monitoring diagnosis acquisition unit 2, and the motor rotor position signals collected by the shaft angle conversion acquisition unit 1 and the shaft angle conversion acquisition unit 2, respectively, the processor 1 and the processor 2 obtain a signal comparison result; By means of the processor 1 and the processor 2, the driving instruction obtained by the other party from the remote control center is compared with the driving instruction obtained by the processor itself from the remote control center to obtain an instruction comparison result; If the signal comparison result or the instruction comparison result is inconsistent, the power conversion isolation unit is controlled not to output the driving 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 processors 1 and 2, an external signal acquisition unit, a power supply communication conversion unit and a power conversion isolation unit; The remote control center is connected to the processor 1 and the processor 2 respectively through the power supply and communication conversion unit using a power supply and communication integrated 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 the power supply and communication conversion unit is used to transmit the driving instructions issued by the remote control center to the processor 1 and the processor 2, and provide the required power supply for the power conversion isolation unit; The external signal acquisition unit includes a dynamic representation acquisition unit, a monitoring and diagnosis 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 diagnosis acquisition unit is used to acquire the state signal of the target switch machine; 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 diagnosis acquisition unit and the shaft angle conversion acquisition unit respectively include: a dynamic representation acquisition unit 1 and a dynamic representation acquisition unit 2, a monitoring and diagnosis acquisition unit 1 and a monitoring and diagnosis acquisition unit 2, and a shaft angle conversion acquisition unit 1 and a shaft angle conversion acquisition unit 2; wherein, the dynamic representation acquisition unit 1, the monitoring and diagnosis acquisition unit 1 and the shaft angle conversion acquisition unit 1 are respectively connected to the target switch machine and the processor 1; the dynamic representation acquisition unit 2, the monitoring and diagnosis acquisition unit 2 and the 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 communication conversion unit respectively, and 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; The processor 1 and the processor 2 are used to execute the switch machine control method according to any one of claims 1 to 7.

9. The system according to claim 8, characterized in that The system includes at least two switch machine control modules, and at least two of the 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 driving voltage to the target switch machine; the external signal acquisition units in the master switch machine control module and the standby switch machine control module both acquire signals from the target switch machine.

10. The system according to claim 8, characterized in that The target switch machine adopts a synchronous motor as a power source, and at least two of an action position sensor, a display signal sensor and a locking position sensor are disposed inside.

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