Trackside ac point machine controller, ac point machine control method and system

Abstract

The present application provides a kind of trackside AC switch machine controller, AC switch machine control method and system, belong to AC switch machine control field.The AC switch machine controller includes logic unit and control unit, logic unit includes first control subunit and second control subunit;Control unit is used to obtain the working state information of AC switch machine, and sends working state information to logic unit;First control subunit and second control subunit are used to determine the health state of AC switch machine according to working state information respectively, and respectively obtain the steering instruction from interlocking device, and respectively generate first control information and second control information according to steering instruction and health state, and send first control information and second control information to control unit;Control unit is also used to connect three-phase power according to first control information second control information, and drive AC switch machine steering.Can improve the safety and reliability of system.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of AC switch machine control, and particularly relates to a trackside AC switch machine controller and an AC switch machine control method. BACKGROUND

[0002] A switch machine is an important device used in a railway signal system, mainly used for controlling the switching of railway turnouts. A turnout refers to a movable part on a railway track, usually used to change the direction of train travel. The function of the switch machine is to switch the direction of the point rail and the basic rail, so that the train can switch from one track to another, ensuring the smooth passage of trains on different routes.

[0003] Current switch machine controllers are usually single-point designed, meaning that there is only one control unit or key component in the system to perform tasks. Once this component fails, the entire system may fail. Therefore, the safety and reliability of the existing switch machine controller are not enough. SUMMARY

[0004] The application provides a trackside AC switch machine controller, an AC switch machine control method and system to improve the safety and reliability of the AC switch machine control system.

[0005] The application provides a trackside AC switch machine controller, which comprises a logic unit and a control unit, and the logic unit comprises a first control subunit and a second control subunit.

[0006] The logic unit is connected with the interlocking device and the control unit, respectively, and the control unit is connected with the AC switch machine and the three-phase power supply. The logic unit comprises a first control subunit and a second control subunit, and the first control subunit and the second control subunit are connected.

[0007] The control unit is configured to obtain working state information of the AC switch machine and send the working state information to the logic unit.

[0008] The first control subunit is configured to determine the health state of the AC switch machine according to the working state information, obtain a turning instruction from the interlocking device, generate first control information according to the turning instruction and the health state, and send the first control information to the control unit. The first control information is used to instruct the AC switch machine to turn to a preset position.

[0009] The second control subunit is configured to determine a health state of the AC switch machine according to the working state information, acquire a switching instruction from the interlocking device, generate second control information according to the switching instruction and the health state, and send the second control information to the control unit, where the second control information is used to instruct the AC switch machine to switch to a preset position.

[0010] The control unit is further configured to turn on the three-phase power supply according to the first control information and the second control information, and drive the AC switch machine to switch, where the three-phase power supply is a driving power supply of the AC switch machine.

[0011] According to the trackside AC switch machine controller provided in the present application, the control unit comprises a three-phase power supply switching subunit, the three-phase power supply switching subunit comprises a safety control subunit, a first safety acquisition subunit and a first safety switching subunit; the first safety switching subunit is in a first switching state by default, and is in a second switching state when the first control information or the second control information is acquired, the first switching state indicates that the first safety acquisition subunit is connected, and the second switching state indicates that the three-phase power supply is connected with the safety control subunit; the safety control subunit is switched to a conduction state when the first control information and the second control information are acquired, so as to enable the control unit to drive the AC switch machine to switch; and the first safety acquisition subunit is configured to acquire three-phase current information, and convert the three-phase current information into dynamic acquisition code and send the dynamic acquisition code to the first control subunit and the second control subunit.

[0012] According to the trackside AC switch machine controller provided in the present application, the safety control subunit comprises a primary DC / DC circuit, a secondary DC / DC circuit and a relay; the primary DC / DC circuit is connected with the first control subunit, and is configured to generate first control sub-information according to the first control information; the secondary DC / DC circuit is connected with the second control subunit, the primary DC / DC circuit and the relay respectively, and is configured to acquire the second control information and the first control sub-information, and generate second control sub-information according to the second control information and the first control sub-information, where the second control sub-information is used to instruct the relay to be in a conduction state.

[0013] According to the trackside AC switch machine controller provided in the application, the first safety acquisition subunit comprises a first optical coupler and a second optical coupler, the first optical coupler is connected with the second control subunit and the second optical coupler, and the second optical coupler is connected with the first control subunit and the second control subunit respectively; the first optical coupler acquires the code signal from the second control subunit; the second optical coupler converts the acquired three-phase current information into dynamic acquisition code from the code signal of the first optical coupler, and sends the dynamic acquisition code to the first control subunit and the second control subunit, and the three-phase current information is used to indicate the working state of the AC switch machine.

[0014] According to the trackside AC switch machine controller provided in the application, the control unit further comprises a commutation subunit, the commutation subunit is connected with the first control subunit, the second control subunit, the three-phase power switch subunit and the AC switch machine respectively, the commutation subunit comprises a second safety switch subunit and a second safety acquisition subunit; the second safety switch subunit is in a third state by default, and is in a fourth state when the first control information and the second control information are acquired, the third state is used to turn on the second safety acquisition subunit, the fourth state is used to turn on the second phase and the third phase of the three-phase power supply, and is used to generate a driving signal, the driving signal is used to drive the AC switch machine to turn to the preset position; the second safety acquisition subunit is used to acquire state information of the second safety switch subunit, and the state information is used to indicate whether the second safety switch subunit is in the third state.

[0015] According to the trackside AC switch machine controller provided in the application, the logic unit further comprises a maintenance subunit, the maintenance subunit is connected with the control unit and a maintenance device respectively; the maintenance subunit is used to acquire the working state information of the AC switch machine from the control unit, and send the working state information to the first control subunit, the second control subunit and the maintenance device, and the maintenance device is used for fault early warning.

[0016] According to the trackside AC switch machine controller provided in the application, the control subunit further comprises a three-phase voltage isolation acquisition subunit and a three-phase current isolation acquisition subunit, the three-phase voltage isolation acquisition subunit and the three-phase current isolation acquisition subunit are connected with the maintenance subunit respectively; the three-phase voltage isolation acquisition subunit is used to acquire three-phase voltage and send the three-phase voltage to the maintenance subunit, and the three-phase voltage is used to indicate the working state of the AC switch machine; the three-phase current isolation acquisition subunit is used to acquire three-phase current and send the three-phase current to the maintenance subunit, and the three-phase current is used to indicate the working state of the AC switch machine.

[0017] According to the trackside AC switch controller provided in the application, the control unit further comprises an indicating voltage isolation acquisition subunit, an indicating voltage control subunit and an indicating acquisition and control subunit, the indicating voltage isolation acquisition subunit is connected with the AC power supply, the logic unit and the indicating voltage control subunit respectively, the indicating acquisition and control subunit is connected with the indicating voltage control subunit, the logic unit and the AC switch respectively, the AC power supply is the indicating power supply of the AC switch; the indicating voltage isolation acquisition subunit is used for acquiring and sending the voltage value of the AC power supply to the logic unit, and the voltage value of the AC power supply is used for indicating the working state of the AC switch; the indicating voltage control subunit is used for converting the voltage value of the AC power supply into a preset voltage value and outputting to the indicating acquisition and control subunit; and the indicating acquisition and control subunit is used for acquiring and sending the position information of the AC switch to the logic unit, and the position information is used for indicating whether the AC switch is turned to the preset position.

[0018] The application further provides an AC switch control method applied to the trackside AC switch controller, and the method comprises the following steps:

[0019] obtaining a turning instruction from the interlocking device, the turning instruction being used for indicating that the AC switch is turned to a preset position;

[0020] obtaining the current position of the AC switch;

[0021] in the case that the current position does not match the preset position, turning on the driving power supply of the AC switch and driving the AC switch to turn.

[0022] The application further provides an AC switch control system, which comprises a first interlocking device, a second interlocking device, a first trackside AC switch controller and a second trackside AC switch controller.

[0023] The first interlocking device and the second interlocking device are connected through a first inter-system redundancy network and a second inter-system redundancy network, the first interlocking device is connected with the first trackside AC switch controller and the second trackside AC switch controller through a first control network and a second control network, the second interlocking device is connected with the first trackside AC switch controller and the second trackside AC switch controller through the first control network and the second control network, and the first trackside AC switch controller and the second trackside AC switch controller are connected through a first inter-system communication network and a second inter-system communication network.

[0024] The first interlocking device and the second interlocking device are the interlocking device in any of the above.

[0025] The first trackside AC switch machine controller and the second trackside AC switch machine controller are any of the trackside AC switch machine controllers described above.

[0026] The trackside AC switch machine controller provided by the application adopts a 2OO2 design, and the AC switch machine control system adopts a 2 2OO2 design, and devices between systems communicate through an Ethernet, and sufficient redundancy design ensures safety and reliability, and compared with a traditional mode of setting a controller indoors and connecting to outdoors through a signal cable to control and collect states of outdoor switch machine devices, the present application has lower cost and more flexible installation and construction. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0028] Figure 1 is a composition schematic diagram of the AC switch machine control system provided by the application.

[0029] Figure 2 is a product interface schematic diagram of the trackside AC switch machine controller provided by the application.

[0030] Figure 3 is a hardware design schematic diagram of the trackside AC switch machine controller provided by the application.

[0031] Figure 4 is one of the internal structure schematic diagrams of the trackside AC switch machine controller provided by the application.

[0032] Figure 5 is a structure schematic diagram of the safety control subunit provided by the application.

[0033] Figure 6 is a structure schematic diagram of the first safety acquisition subunit provided by the application.

[0034] Figure 7 is another internal structure schematic diagram of the trackside AC switch machine controller provided by the application.

[0035] Figure 8 is a flow schematic diagram of the AC switch machine control method provided by the application. DETAILED DESCRIPTION

[0036] In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be described clearly and completely below in conjunction with the drawings in the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0037] The terms "first", "second", etc. in the specification and claims of the present application and the above drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units is not limited to the listed steps or units, but can optionally further include steps or units not listed, or can optionally further include other steps or units inherent to the process, method, product or device.

[0038] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of the application. The appearance of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily mutually exclusive of other embodiments. It is explicitly and implicitly understood that the embodiments described herein can be combined with other embodiments.

[0039] Current switch machine controllers are usually single-point designs, meaning that there is only one control unit or critical component in the system to perform the task, which is not safe and reliable enough.

[0040] In view of the above problems, the present application provides a trackside AC switch machine controller, an AC switch machine control method and system. The embodiments of the present application will be described in detail below in conjunction with the drawings.

[0041] Please refer to Figure 1 and Figure 2 , the AC switch machine control system includes a first interlocking device (i.e. interlocking device I system in Figure 1 ), a second interlocking device (i.e. interlocking device II system in Figure 1 ), a first trackside AC switch machine controller (i.e. trackside AC switch machine controller I system in Figure 1 ) and a second trackside AC switch machine controller (i.e. trackside AC switch machine controller II system in Figure 1 ); the first interlocking device and the second interlocking device are connected through a first inter-system redundancy network (i.e. inter-system redundancy-A network in Figure 1 ) and a second inter-system redundancy network (i.e. inter-system redundancy-B network in Figure 1the first interlocking device is connected with the first trackside AC switch machine controller and the second trackside AC switch machine controller through a first control network (i.e. Figure 1 control A network) and a second control network (i.e. Figure 1 control B network) in the control system, the second interlocking device is connected with the first trackside AC switch machine controller and the second trackside AC switch machine controller through the first control network and the second control network, and the first trackside AC switch machine controller is connected with the second trackside AC switch machine controller through a first inter-system communication network (i.e. Figure 1 inter-system communication A network) and a second inter-system communication network (i.e. Figure 1 inter-system communication B network).

[0042] In the embodiment, the interlocking device I system and the interlocking device II system are connected with the control part of the trackside AC switch machine controller through the redundant control network, and are used to issue and upload control information, the control information including a switch direction instruction used to instruct the AC switch machine to switch to a preset position. The trackside AC switch machine controller I system and the trackside AC switch machine controller II system form a redundant structure, and data synchronization between the systems can be completed through the redundant Flexray network.

[0043] It can be seen that, in the embodiment, the AC switch machine control system adopts a 2 OO2 design, and the devices in the system are connected through the Ethernet, and the safety and reliability are ensured by the sufficient redundant design. Compared with the traditional mode in which the controller is arranged indoors and is connected to the outdoor switch machine device through a signal cable to control and collect the state of the outdoor switch machine device, the cost is lower, and the installation and construction are more flexible.

[0044] Please refer to Figure 2 In a possible embodiment, the AC switch machine control system further includes a maintenance device connected with the first trackside AC switch machine controller and the second trackside AC switch machine controller through a maintenance network; and the maintenance device is used to perform fault early warning according to the working state information of the switch machine from the first trackside AC switch machine controller and the second trackside AC switch machine controller.

[0045] In the embodiment, the maintenance device is connected with the maintenance part of the trackside AC switch machine controller through the maintenance network, is used to obtain maintenance information, realizes state detection of the AC switch machine, and timely outputs early warning information.

[0046] It can be seen that, in the embodiment, the state detection related information is transmitted through the maintenance network alone, so that the timeliness of the state monitoring of the AC switch machine is improved, and the system safety is improved.

[0047] As Figure 3As shown, the rail-side AC switch machine controller in the present application is powered by DC 24V voltage, three-phase power AC 380V (A, B, C three-phase) is the driving power of the AC switch machine, and AC power AC 220V is the indicating power of the AC switch machine. The rail-side AC switch machine controller can control one five-wire (such as ZDJ9) switch machine, so it can include X1, X2, X3, X4, X5 interfaces for connecting the five-wire AC switch machine.

[0048] In order to increase the isolation of the strong current part and the weak current part in the product, please refer to Figure 4 The rail-side AC switch machine controller in the present application adopts a split board design, i.e. the strong current part and the weak current part are designed as two circuit boards, and the boards are connected through a connector. In specific implementation, the AC 380V three-phase power, the AC 220V power, and the interfaces X1, X2, X3, X4, X5 of the switch machine are on the board card of the strong current part, and the DC 24V, the control A network and the B network, the maintenance network, and the intercommunication A network and the B network are on the board card of the weak current part. It should be noted that the switch machine mentioned in the present scheme is an AC switch machine.

[0049] Please refer to Figure 5 The internal structure of the rail-side AC switch machine controller in the present scheme includes a logic unit and a control unit, the logic unit includes a first control subunit and a second control subunit;

[0050] The logic unit is connected with the interlocking device and the control unit respectively, the control unit is connected with the AC switch machine and the three-phase power, the logic unit includes a first control subunit and a second control subunit, and the first control subunit and the second control subunit are connected;

[0051] The control unit is configured to acquire working state information of the AC switch machine and send the working state information to the logic unit;

[0052] The control subunit is configured to determine a health state of the AC switch machine according to the working state information, acquire a turning instruction from the interlocking device, generate first control information according to the turning instruction and the health state, and send the first control information to the control unit, the first control information being used to instruct the AC switch machine to turn to a preset position;

[0053] The second control subunit is configured to determine a health state of the AC switch machine according to the working state information, acquire a turning instruction from the interlocking device, generate second control information according to the turning instruction and the health state, and send the second control information to the control unit, the second control information being used to instruct the AC switch machine to turn to a preset position;

[0054] The control unit is also used to connect the three-phase power supply according to the first control information and the second control information, and drive the AC switch machine to turn, wherein the three-phase power supply is the driving power supply for the AC switch machine.

[0055] The first and second control subunits can each include a microcontroller unit (MCU), namely MCU-1 and MCU-2. The first and second control subunits can exchange data via two Controller Area Network (CAN) communication buses. Each of the first and second control subunits can output one Ethernet connection to the control unit and two Flexray buses for inter-system communication. ID information is obtained by connecting a DIP switch through a configuration identifier (Cfg-ID) configuration interface.

[0056] As can be seen, in this embodiment, the trackside AC switch machine controller adopts a 2OO2 redundant design. When the controller connects the three-phase power supply to drive the switch machine to turn, it needs to obtain the control information of the first control subunit and the control information of the second control subunit at the same time, which can improve the safety and reliability of the system.

[0057] In one possible embodiment, the control unit includes a three-phase power switch subunit, which includes a safety control subunit, a first safety acquisition subunit, and a first safety switch subunit. The first safety switch subunit is in a first switch state by default, and is in a second switch state when it acquires the first control information or the second control information. The first switch state indicates connection to the first safety acquisition subunit, and the second switch state indicates connection of the three-phase power supply to the safety control subunit. The safety control subunit switches to an on state when it acquires the first control information and the second control information, so that the control unit drives the AC switch machine to change direction. The first safety acquisition subunit is used to acquire three-phase current information and convert the three-phase current information into a dynamic acquisition code and send it to the first control subunit and the second control subunit.

[0058] Among them, such as Figure 5 As shown, the three-phase power switch subunit is... Figure 5 In the three-phase power switch circuit, the first safety switch subunit may include a three-on-one-off relay, i.e. Figure 5 The safety relay shown. This safety control subunit and... Figure 5 The security AND gate circuits, the first security acquisition subunit and Figure 6 The secure data acquisition circuit in the system.

[0059] In the specific implementation, the first switch state is that the normally closed node in the three-open-one-closed relay is closed, and the safety acquisition circuit is connected to the loop for acquiring the health state information of the switch machine. The second switch state is that the three normally open nodes in the three-open-one-closed relay are closed, and are connected with the three phases of the three-phase power supply and the safety AND gate circuit. That is, when the three-open-one-closed relay does not acquire the first control information or the second control information, the normally closed node in the three-open-one-closed relay is closed to acquire the health state information, and then the acquired information is sent to the control unit. After the normally open nodes in the three-open-one-closed relay are closed, the safety AND gate circuit is connected to determine whether the three-phase power supply is connected to control the switch machine to turn.

[0060] It can be seen that, in the embodiment, the design of the three-phase power supply switch subunit can improve the safety of the system.

[0061] Please refer to Figure 7 In a possible embodiment, the safety control subunit includes a first DC / DC circuit, a second DC / DC circuit, and a relay; the first DC / DC circuit is connected with the first control subunit, and is configured to generate first control sub-information according to the first control information; the second DC / DC circuit is connected with the second control subunit, the first DC / DC circuit, and the relay respectively, and is configured to acquire the second control information and the first control sub-information, and generate second control sub-information according to the second control information and the first control sub-information, the second control sub-information being used to indicate that the relay is in the on state.

[0062] The safety AND gate circuit is composed of two-stage DC / DC circuits, the first-stage DC / DC circuit is controlled by the PWM signal of the first control subunit (MCU-1), and the second-stage DC / DC circuit is controlled by the PWM signal of the second control subunit (MCU-2). The output of the first-stage DC / DC circuit provides a control power supply for the second-stage DC / DC circuit, and the output of the second-stage DC / DC circuit directly drives the relay. Only when the MCU-1 and the MCU-2 simultaneously output the PWM control information, the safety AND gate relay can be driven to output, that is, the three-phase power supply is connected. The safety control subunit can also detect the state of the control side back acquisition signal to detect the safety control subunit.

[0063] It can be seen that, in the embodiment, the full control circuit is realized by the safety control subunit through the dynamic control information given by the first control subunit and the second control subunit, so that the three-phase power supply can be cut off when any control subunit fails seriously, and the safety and reliability of the system are improved.

[0064] Please refer to Figure 5In a possible embodiment, the first safety acquisition subunit comprises a first optocoupler and a second optocoupler, the first optocoupler is connected with the second control subunit and the second optocoupler, the second optocoupler is connected with the first control subunit and the second control subunit respectively; the first optocoupler acquires the code signal from the second control subunit; the second optocoupler converts the acquired three-phase current information into a dynamic acquisition code according to the code signal from the first optocoupler, and sends the dynamic acquisition code to the first control subunit and the second control subunit, the three-phase current information is used to indicate the working state of the AC switch machine.

[0065] The dynamic acquisition circuit is composed of two optocouplers, and the static signal to be acquired is converted into a dynamic acquisition code by sending the dynamic code, and the dynamic acquisition code is provided to the MCU-1 and the MCU-2 for acquisition. The static signal to be acquired is a three-phase current signal. After acquiring the dynamic acquisition code, the first control subunit and the second control subunit can determine the start, friction, to-position, over-current, and missing item of the switch machine based on the three-phase current, so as to determine the health state of the switch machine and determine whether there is a serious fault.

[0066] It can be seen that in the embodiment, the acquisition of the three-phase current signal is realized based on the dynamic acquisition code, which can ensure the safe acquisition of the normally closed node closed state and improve the safety and reliability of the system.

[0067] Please refer to Figure 5 , the control unit further comprises a commutation subunit, the commutation subunit is connected with the first control subunit, the second control subunit, the three-phase power switch subunit and the AC switch machine respectively, and the commutation subunit comprises a second safety switch subunit and a second safety acquisition subunit.

[0068] The second safety switch subunit is in a third state by default, and is in a fourth state when the first control information and the second control information are acquired, the third state is used to turn on the second safety acquisition subunit, the fourth state is used to turn on the second phase and the third phase of the three-phase power supply, and is used to generate a driving signal, the driving signal is used to drive the AC switch machine to turn to the preset position.

[0069] The second safety acquisition subunit is used to acquire state information of the second safety switch subunit, and the state information is used to indicate whether the second safety switch subunit is in the third state.

[0070] In the commutation subunit and Figure 5 , the second safety switch subunit can comprise two three-open-one-close relays, i.e. the safety relays in the commutation circuit shown in Figure 5 . The second safety acquisition circuit isFigure 5 The safety acquisition circuit in the commutation circuit shown in the figure. The B phase and the C phase in the three-phase power supply can form a commutation circuit through the 4 groups of normally open nodes of two three-open-one-close relays, and the two three-open-one-close relays in the circuit are controlled by the level signals of the first control subunit and the second control subunit. Each three-open-one-close relay also provides a normally open node for controlling the access of the B phase and the C phase. That is, after obtaining the first control information or the second control information, the second safety switch subunit is in the fourth state, the normally open nodes of the two safety relays are closed, and the commutation circuit is switched based on the turning content indicated by the first control information and the second control information, so as to drive the switch machine to turn to the preset position.

[0071] When the first control information and the second control information are not obtained, the second safety switch subunit is in the third state, at which time the normally closed node of the three-open-one-close relay is closed, and the second safety acquisition subunit is accessed, at which time the second safety acquisition subunit acquires the state of the second safety switch subunit to determine whether the action of the safety switch subunit is completed. That is, if the second safety acquisition subunit determines that the normally closed node of the three-open-one-close relay is closed, it is considered that the action of the three-open-one-close relay is completed.

[0072] It can be seen that, in the embodiment, the second safety switch subunit forms a commutation circuit, and the action completion of the second safety switch subunit is monitored at the same time, which can improve the reliability of the switch machine control.

[0073] Please refer to Figure 5 In a possible embodiment, the control unit further comprises a two-phase electronic switch subunit, which is connected to the three-phase power supply switch subunit and the commutation subunit respectively, and is used to control the on-off of the second phase and the third phase of the three-phase power supply respectively.

[0074] Among them, the two-phase switch subunit is a two-phase electronic switch (SSR) in Figure 5 The two-phase electronic switch controls the on-off of the B phase and the C phase of the three-phase power supply respectively. This part of the design can be used to improve the reliability of the first safety switch subunit in the three-phase power supply switch subunit and avoid the live action of the first safety switch subunit.

[0075] Please refer to Figure 5 In a possible embodiment, the logic unit further comprises a maintenance subunit, which is connected to the control unit and the maintenance device respectively; the maintenance subunit is used to acquire the working state information of the AC switch machine from the control unit, and send the working state information to the first control subunit, the second control subunit and the maintenance device; and the maintenance device is used for fault early warning.

[0076] The maintenance subunit can include an MCU, i.e. Figure 5 The model of the MCU-3 can be different from the models of the MCU-1 and the MCU-2. The maintenance subunit outputs one Ethernet access to a maintenance network, and one Universal Asynchronous Receiver / Transmitter (UART) as a debugging interface. The MCU-3 exchanges data with the MCU-1 and the MCU-2 through the UART and the CAN interface. The MCU-3 can also be connected to a Real-Time Clock (RTC) module through an Inter-Integrated Circuit (IIC) bus, connected to a temperature sensor through the IIC bus, and connected to a Serial Peripheral Interface (SPI) for voltage monitoring, temperature monitoring, and information storage. The RTC module is used to implement a real-time clock function. The logic unit further includes an isolated power supply subunit connected to the maintenance subunit and supplying power to the logic unit by accessing a direct current power supply.

[0077] It can be seen that, in the embodiment, the maintenance subunit for monitoring the working state of the switch machine is independently arranged, thereby improving the safety of the system and the timeliness and accuracy of data processing.

[0078] Please refer to Figure 8 In a possible embodiment, the first control subunit further includes a three-phase voltage isolation acquisition subunit and a three-phase current isolation acquisition subunit, which are connected to the maintenance subunit. The three-phase voltage isolation acquisition subunit is used to acquire three-phase voltage and send the three-phase voltage to the maintenance subunit, and the three-phase voltage is used to indicate the working state of the AC switch machine. The three-phase current isolation acquisition subunit is used to acquire three-phase current and send the three-phase current to the maintenance subunit, and the three-phase current is used to indicate the working state of the AC switch machine.

[0079] The three-phase voltage isolation acquisition subunit includes an isolation operational amplifier, a current-limiting resistor, a sampling resistor, and an RMS-to-DC converter (rms-dc) for acquiring three-phase voltage and sending the three-phase voltage to the maintenance subunit. The three-phase current isolation acquisition subunit includes an isolation operational amplifier, a sampling resistor, and an rms-dc converter for acquiring three-phase current and sending the three-phase current to the maintenance subunit. The maintenance subunit can determine the working state of the switch machine according to the three-phase current and the three-phase voltage.

[0080] It can be seen that in the embodiment, the three-phase voltage and the three-phase current are collected to determine the working state of the switch machine, the switch machine can be monitored, early warning prompt can be output in time, and the safety and reliability of the system are improved.

[0081] Please refer to ​ In a possible embodiment, the control unit further comprises an indicating voltage isolation acquisition subunit, an indicating voltage control subunit and an indicating acquisition and control subunit, the indicating voltage isolation acquisition subunit is connected with the alternating current power supply, the logic unit and the indicating voltage control subunit respectively, the indicating acquisition and control subunit is connected with the indicating voltage control subunit, the logic unit and the alternating current switch machine respectively, and the alternating current power supply is the indicating power supply of the alternating current switch machine; the indicating voltage isolation acquisition subunit is used for acquiring and sending the voltage value of the alternating current power supply to the logic unit, and the voltage value of the alternating current power supply is used for indicating the working state of the alternating current switch machine; the indicating voltage control subunit is used for converting the voltage value of the alternating current power supply into a preset voltage value and outputting to the indicating acquisition and control subunit; and the indicating acquisition and control subunit is used for acquiring and sending the position information of the alternating current switch machine to the logic unit, and the position information is used for indicating whether the alternating current switch machine is turned to the preset position.

[0082] The indicating voltage isolation acquisition subunit comprises an operational amplifier, a sampling resistor, a current-limiting resistor and an rms-dc converter, is used for acquiring the indicating voltage and sending the acquired indicating voltage to the maintenance subunit, and the maintenance subunit can determine the working state of the switch machine based on whether the acquired indicating voltage is correct. The indicating voltage control subunit comprises a power frequency transformer, and can convert the 220VAC indicating voltage into a 24VAC voltage output. The indicating acquisition and control subunit can comprise a five-open-one-close relay. The indicating acquisition and control subunit comprises an indicating acquisition circuit and an indicating self-checking circuit. When the indicating acquisition circuit is connected into a loop, the self-checking circuit is periodically started to detect the correctness of the indicating acquisition circuit. The four normally-open nodes of the five-open-one-close relay are used to determine whether the indicating loop is connected, the safe acquisition of the loop acquires the position information of the switch machine at the same time and provides the first control subunit and the second control subunit. The position information can comprise that the switch machine is in the four-open, positive table or reverse table position and the like.

[0083] In the specific implementation, the wayside alternating current switch machine controller can further comprise an electromagnetic compatibility protection circuit, which is used for solving the electromagnetic compatibility (EMC) problem of the driving and indicating. The wayside alternating current switch machine controller can be placed in a trackside box, and the box can comprise a lightning protection unit.

[0084] It can be seen that, in the embodiment, the position information of the switch machine is acquired by the indicating voltage isolation acquisition subunit, the indicating voltage control subunit and the indicating acquisition and control subunit, so that the intelligence of the system can be improved.

[0085] The application further provides an alternating current switch machine control method, please refer to ​ The alternating current switch machine control method is applied to the trackside alternating current switch machine controller in the above embodiment, and the method comprises the following steps.

[0086] S801, acquiring a turning instruction from an interlocking device.

[0087] The turning instruction is used to indicate that the alternating current switch machine is turned to a preset position.

[0088] S802, acquiring a current position of the alternating current switch machine.

[0089] The current position can be acquired based on the indicating acquisition and control subunit.

[0090] S803, in the case that the current position does not match the preset position, turning on a driving power supply of the alternating current switch machine and driving the alternating current switch machine to turn.

[0091] The driving power supply can be the three-phase power supply. In the case that the current position does not match the preset position, it means that the turning operation of the switch machine needs to be performed. At this time, the first control subunit and the second control subunit can send the first control information and the second control information to the control unit, and then the control unit turns on the three-phase power supply to determine the turning of the switch machine.

[0092] For example, the interlocking device issues a fixed route switch command, and if the switch is in the reverse position or the four-open state, the trackside alternating current switch machine controller operates the switch to turn to the fixed position; if the switch is in the fixed position, the trackside alternating current switch machine controller does not operate the switch and alarms. The interlocking device issues a reverse route switch command, and if the switch is in the fixed position or the four-open state, the trackside alternating current switch machine controller operates the switch to turn to the reverse position; if the switch is in the reverse position, the trackside alternating current switch machine controller does not operate the switch and alarms. The interlocking device does not issue a route switch command, and the trackside alternating current switch machine controller does not operate the switch, so that the switch remains in the original position and does not turn.

[0093] It can be seen that, in the embodiment, the trackside alternating current switch machine controller first acquires a turning instruction from an interlocking device, the turning instruction is used to indicate that the alternating current switch machine is turned to a preset position, then acquires a current position of the alternating current switch machine, and finally turns on a driving power supply of the alternating current switch machine and drives the alternating current switch machine to turn in the case that the current position does not match the preset position. The turning of the switch machine can be safely and accurately controlled.

[0094] In a possible implementation, after the driving of the AC switch machine turning, the method further includes: acquiring a current position of the AC switch machine; in a case where the current position matches the preset position, cutting off the driving power supply; in a case where the current position does not match the preset position, cutting off the driving power supply after waiting for a preset time period, and outputting first alarm prompt information.

[0095] In the control of the turning of the switch machine, the position information acquired can be used to determine whether the turning action of the switch machine is completed. If the turning action is completed, the driving power supply is cut off. If the turning action is not completed, the turning time of the switch machine is monitored. If the maximum turning time is exceeded, the driving power supply is cut off, the turning is stopped, and an alarm is output. The maximum turning time can be configured according to engineering requirements, for example, 13 seconds.

[0096] It can be seen that, in the embodiment, the driving power supply is cut off based on time and position, and the intelligence and safety of the control of the turning of the switch machine can be improved.

[0097] In a possible implementation, after the acquiring of the current position of the AC switch machine, the method further includes: determining whether the current position is consistent with a position of the AC switch machine corresponding to a last historical turning instruction acquired; if not, outputting second alarm prompt information.

[0098] In the embodiment, the position of the current switch machine and the preset position in the last turning are monitored. If the positions are not consistent, an alarm is output, and the current position of the switch machine is recorded as four openings, waiting for manual processing.

[0099] It can be seen that, in the embodiment, the turning result of the last time is monitored, and the reliability and intelligence of the control of the turning of the switch machine can be improved.

[0100] From the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software and a necessary general hardware platform, and of course, can also be implemented by hardware. Based on such understanding, the above technical solutions essentially or in other words, the part that contributes to the prior art can be embodied in the form of a software product, which can be stored in a computer readable storage medium, such as a ROM / RAM, a magnetic disk, an optical disk, etc., and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the method described in each embodiment or some part of the embodiment.

[0101] It should be pointed out finally that the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit the same; and although the present application has been described in detail with reference to the foregoing embodiments, it should be appreciated by those skilled in the art that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features thereof can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A wayside AC switch machine controller, characterized by, The AC switch controller comprises a logic unit and a control unit, the logic unit comprises a first control subunit and a second control subunit; The logic unit is connected with an interlocking device and the control unit respectively, the control unit is connected with an AC switch and a three-phase power supply, the logic unit comprises a first control subunit and a second control subunit, and the first control subunit and the second control subunit are connected; The control unit is configured to acquire working state information of the AC switch and send the working state information to the logic unit; The first control subunit is configured to determine a health state of the AC switch according to the working state information, acquire a turning instruction from the interlocking device, generate first control information according to the turning instruction and the health state, and send the first control information to the control unit, the first control information being used to instruct the AC switch to turn to a preset position; The second control subunit is configured to determine a health state of the AC switch according to the working state information, acquire a turning instruction from the interlocking device, generate second control information according to the turning instruction and the health state, and send the second control information to the control unit, the second control information being used to instruct the AC switch to turn to a preset position; The control unit is further configured to turn on the three-phase power supply according to the first control information and the second control information, and drive the AC switch to turn, the three-phase power supply being a driving power supply of the AC switch; The control unit comprises a three-phase power supply switching subunit, the three-phase power supply switching subunit comprises a first safety acquisition subunit, the first safety acquisition subunit comprises a first optocoupler and a second optocoupler, the first optocoupler is connected with the second control subunit and the second optocoupler, the second optocoupler is connected with the first control subunit and the second control subunit respectively, the first optocoupler acquires a code signal from the second control subunit, and the second optocoupler converts three-phase current information into dynamic acquisition code according to the code signal from the first optocoupler, and sends the dynamic acquisition code to the first control subunit and the second control subunit, the three-phase current information being used to indicate the working state of the AC switch.

2. The wayside AC switch machine controller of claim 1, wherein, The three-phase power supply switching subunit further comprises a safety control subunit and a first safety switching subunit; The first safety switching subunit is in a first switching state by default, and is in a second switching state when the first control information or the second control information is acquired, the first switching state indicating that the first safety acquisition subunit is connected, and the second switching state indicating that the three-phase power supply is connected with the safety control subunit; The safety control subunit is switched to a conduction state when the first control information and the second control information are acquired, so that the control unit drives the AC switch to turn.

3. The wayside AC switch machine controller of claim 2, wherein, The safety control subunit comprises a primary DC / DC circuit, a secondary DC / DC circuit and a relay. The primary DC / DC circuit is connected with the first control subunit, and is configured to generate first control sub-information according to the first control information; The secondary DC / DC circuit is connected with the second control subunit, the primary DC / DC circuit and the relay respectively, and is configured to acquire the second control information and the first control sub-information, and generate second control sub-information according to the second control information and the first control sub-information, wherein the second control sub-information is used to indicate that the relay is in a conducting state.

4. The wayside AC switch machine controller of claim 2, wherein, The control unit further comprises a commutation subunit, which is connected with the first control subunit, the second control subunit, the three-phase power switch subunit and the AC switch respectively, and comprises a second safety switch subunit and a second safety acquisition subunit; The second safety switch subunit is in a third state by default, and is in a fourth state when the first control information and the second control information are acquired, wherein the third state is used to turn on the second safety acquisition subunit, the fourth state is used to turn on the second phase and the third phase of the three-phase power supply, and is used to generate a driving signal, and the driving signal is used to drive the AC switch to turn to the preset position; The second safety acquisition subunit is used to acquire state information of the second safety switch subunit, and the state information is used to indicate whether the second safety switch subunit is in the third state.

5. The wayside AC switch machine controller of claim 1, wherein, The logic unit further comprises a maintenance subunit, which is connected with the control unit and a maintenance device respectively; The maintenance subunit is used to acquire working state information of the AC switch from the control unit, and send the working state information to the first control subunit, the second control subunit and the maintenance device, and the maintenance device is used to perform fault early warning.

6. The wayside AC switch machine controller of claim 5, wherein, The control subunit further comprises a three-phase voltage isolation acquisition subunit and a three-phase current isolation acquisition subunit, which are connected with the maintenance subunit respectively; The three-phase voltage isolation acquisition subunit is used to acquire three-phase voltage, and send the three-phase voltage to the maintenance subunit, and the three-phase voltage is used to indicate the working state of the AC switch; The three-phase current isolation acquisition subunit is used to acquire three-phase current, and send the three-phase current to the maintenance subunit, and the three-phase current is used to indicate the working state of the AC switch.

7. The wayside AC switch machine controller of claim 5, wherein, The control unit further comprises an indicating voltage isolation acquisition subunit, an indicating voltage control subunit and an indicating acquisition and control subunit, the indicating voltage isolation acquisition subunit is connected with an AC power supply, the logic unit and the indicating voltage control subunit respectively, the indicating acquisition and control subunit is connected with the indicating voltage control subunit, the logic unit and the AC switch respectively, and the AC power supply is an indicating power supply of the AC switch. The representation voltage isolation acquisition subunit is configured to acquire and send a voltage value of the AC power supply to the logic unit, and the voltage value of the AC power supply is used to indicate the working state of the AC switch machine. The representation voltage control subunit is configured to convert the voltage value of the AC power supply into a preset voltage value and output to the representation acquisition and control subunit. The representation acquisition and control subunit is configured to acquire and send position information of the AC switch machine to the logic unit, and the position information is used to indicate whether the AC switch machine is turned to the preset position.

8. An AC point machine control method, characterized by, The method is applied to the trackside AC switch machine controller of any one of claims 1-7, and the method comprises: obtaining a turning instruction from an interlocking device, the turning instruction being used to indicate that the AC switch machine is turned to a preset position; obtaining a current position of the AC switch machine; in a case where the current position does not match the preset position, turning on a driving power supply of the AC switch machine and driving the AC switch machine to turn.

9. An AC point machine control system characterized by, The system comprises a first interlocking device, a second interlocking device, a first trackside AC switch machine controller and a second trackside AC switch machine controller. The first interlocking device and the second interlocking device are connected through a first inter-system redundancy network and a second inter-system redundancy network, the first interlocking device is connected with the first trackside AC switch machine controller and the second trackside AC switch machine controller through a first control network and a second control network, the second interlocking device is connected with the first trackside AC switch machine controller and the second trackside AC switch machine controller through the first control network and the second control network, and the first trackside AC switch machine controller and the second trackside AC switch machine controller are connected through a first inter-system communication network and a second inter-system communication network. The first interlocking device and the second interlocking device are interlocking devices connected with the trackside AC switch machine controller of any one of claims 1-7. The first trackside AC switch machine controller and the second trackside AC switch machine controller are the trackside AC switch machine controller of any one of claims 1-7.

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