WO2020063278A1

WO2020063278A1 - Alternating current turnout equipment, system, and control method therefor

Info

Publication number: WO2020063278A1
Application number: PCT/CN2019/104326
Authority: WO
Inventors: 张�浩; 刘晓冬; 吕媛媛; 周英才; 张夫松; 祁颖; 李思然
Original assignee: 北京全路通信信号研究设计院集团有限公司
Priority date: 2018-09-28
Filing date: 2019-09-04
Publication date: 2020-04-02
Also published as: EP3656639A1; EP3656639A4; CN109278802B; EP3656639B1; EA202091838A1; CN109278802A

Abstract

Alternating current turnout equipment, a system, and a control method. The alternating current turnout equipment comprises a switch control part and a logic part. The switch control part comprises a driving part and an indicating part that are mutually independent. The driving part and the indicating part are capable of implementing a data connection with the logic part. The driving part is used for controlling a switch to execute a fixed switching or reverse switching action on the basis of a control instruction of the logic part. The indicating part is used for collecting indication information of the switch and transmitting the collected indication information of the switch to the logic part. The alternating current turnout equipment, the system, and the control method effectively increase the reliability of turnout control, thus ensuring traffic safety.

Description

AC turnout device, system and control method thereof

This application claims priority from a Chinese patent application filed with the Chinese Patent Office on September 28, 2018, with application number 201811139273.9, the entire contents of which are incorporated herein by reference.

Technical field

The present invention relates to the technical field of rail transit, and in particular to an AC turnout device, system and control method thereof.

Background technique

The computer interlocking system currently in use is a system in which the computer completes the interlocking operation and the gravity relay circuit completes the driving and representation at the driver execution level. A large number of gravity relays are used in the system. As shown in FIG. 1, the AC turnout control system according to the prior art includes a large number of components such as a circuit breaker RD, a phase failure protector DBQ, and a relay DQJ. During manufacturing, due to the large number of electronic devices, the wiring is very complicated and there are many solder joints; in actual layout, due to the complicated structure, the area is large; when in use, the control process and current flow are complicated; when a fault occurs, find and Locating faults is complex and requires regular maintenance.

As shown in Figure 1, the current flow of the turnout circuit is:

1) Turnout power supply A → circuit breaker RD1 → phase-breaking protector DBQ-S _11-21 → start relay 1DQJ _12-11 → switch coil motor W coil.

2) Turnout power supply B → circuit breaker RD2 → phase-break protector DBQ-S _31-41 → start relay 1DQJF _12-11 → start relay 2DQJ _111-112 → switch machine contact 43-44 → interrupt switch K → switch Machine motor U coil.

3) Switch operation of the power circuit breaker RD3 → C → phase protection device _{_{DBQ-S 51-61 → 1DQJF 22-21 →}} 2DQJ 121-122 → 41-42 → switch machine contacts V coil of the motor of the switch machine.

4) The phase sequence of the switch motor is W-U-V, which rotates clockwise to drive the sharp rail to position.

The turnout indicates that the current flow of the positive half-cycle circuit of the power supply in the circuit is:

Transformer BD terminal 3 → resistance R1 → 2DQJ _22-21 → 2DQJ _131-132 → 1DQJF _13-11 → 2DQJ _111-112 → switch machine contact 33-34 → switch machine contact 15-16 → rectifier diode Z → resistance R → switch machine contact 35-36 → motor coil U → motor coil W → 1DQJ _11-13 → indicates transformer BD terminal 4.

The turnout indicates that the current flow of the negative half-cycle circuit of the power supply in the circuit is:

Transformer BD terminal 3 → Resistor R1 → 1DQJ _22-21 → 2DQJ _131-132 → DBJ _4-1 → Switch machine contact 11-12 → Motor coil V → Motor coil W → 1DQJ _11-13 → Transformer BD terminal 4 .

The existing turnout control system generally does not separate the driving circuit and the display circuit, has low adaptability, and low safety, which affects driving safety and operating efficiency.

Summary of the Invention

In view of the above technical problems existing in the prior art, the present invention proposes an AC turnout device.

An AC turnout device includes a switch machine control section and a logic section. The switch machine control section includes a drive section and a display section that are independent of each other. The logic department implements data connection, where:

The driving unit is configured to control the switch machine to perform a fixed turning or a reversing action based on a control instruction of the logic unit;

The display unit is configured to collect the display information of the switch machine, and send the collected display information of the switch machine to the logic unit.

Further, the driving unit includes a three-phase power switch circuit, a three-phase current isolation acquisition circuit, a three-phase electronic switch circuit, and a commutation and wire conversion circuit, wherein:

The three-phase power switch circuit is used to implement on-off control of three-phase AC power;

The three-phase current isolation acquisition circuit is used to implement current collection for each phase of the three-phase power, and is used to determine whether the three-phase power is complete and whether the switch machine is driven in place;

The three-phase electronic switch circuit is used to improve the reliability of the three-phase power switch circuit and the commutation and wire conversion circuit;

The commutation and wire conversion circuit is used to realize the commutation of three-phase electricity and perform multi-wire conversion, and can be used to control a multi-wire switch machine.

Further, the three-phase power switch circuit includes a switch circuit and a safety acquisition unit, wherein:

The switch circuit is configured to perform an opening and closing action based on a control signal to implement on-off control of three-phase AC power;

The safety acquisition unit is configured to acquire an open / close state of the switch circuit.

Further, the commutation and wire conversion circuit includes a plurality of switching circuits, wherein:

Each of the plurality of switching circuits is connected in parallel to two of the three-phase lines of the three-phase alternating current.

Further, the switch circuit includes a switch unit, a control unit, and a safety acquisition unit, wherein:

The switch unit can be opened or closed according to a control instruction of the control unit;

The safety acquisition unit is configured to acquire an open / close state of the switch unit.

Further, the driving unit further includes a three-phase current isolation acquisition circuit and a three-phase electronic switch circuit, wherein:

The three-phase current isolation acquisition circuit is used to determine whether each phase line in the three-phase electric line is abnormal, and whether the switch machine is driven in place;

The three-phase electronic switch is used to control the on-off of the three-phase electric line.

Further, the display unit includes a display electric control circuit and a display acquisition and control circuit, wherein:

The said electric control circuit is used for converting two-phase high-voltage AC power into two-phase low-voltage AC power.

The indication acquisition and control circuit is used for connecting with the internal switch of the switch machine to acquire the display state information of the switch machine.

Further, the switch machine control unit includes a first switch machine control unit and a second switch machine control unit, and the logic unit includes a first security processing module and a second security processing module, wherein,

A drive unit and a display unit in the first switch machine control unit can realize data connection with the first and second security processing modules;

The drive unit and the display unit in the second switch machine control unit can realize data connection with the first and second security processing modules.

A dual-system hot standby AC turnout system includes a first AC turnout device and a second AC turnout device, and each of the first AC turnout device and the second AC turnout device includes a logic section, a first A first switch machine control unit and a second switch machine control unit, wherein,

The first switch machine control section in the first AC switch device and the first switch machine control section in the second AC switch device have a square structure;

The second switch machine control unit in the first AC switch device and the second switch machine control unit in the second AC switch device have a square structure;

The logic part in the first AC turnout device and the logic part in the second AC turnout device communicate through an intersystem bus;

The first switch machine control unit and the second switch machine control unit each include a drive unit and a display unit that are independent of each other, and the drive unit and the display unit can both implement data connection with the logic unit, wherein,

A turnout control method based on any of the above-mentioned AC turnout devices, the method comprising:

The logic section sends a drive control instruction to the drive section, and the drive section controls the switch machine to perform a fixed rotation or a reverse operation based on the drive control instruction;

The display unit collects the display information of the switch machine and sends the display information to the logic unit.

Further, the three-phase current isolation acquisition circuit in the driving part detects the state of each phase power in the three-phase power, and sends the state of each phase power to the logic part. After the logic part receives the state of each phase power, It is determined whether or not a command to guide the safety side is given to the drive unit.

Further, the AC turnout module sends an AC sinusoidal signal to the outdoor switch machine through the positioning circuit and the inversion circuit respectively, and judges the state of the switch machine by detecting the return current;

When the AC switch module controls a five-wire switch machine, when the switch machine is in position, the switch inside the switch connects the positioning circuit in the display unit with the switch diode, and the inversion circuit in the display unit is short-circuited. At this time, it means that the positioning acquisition circuit in the ministry collects a negative half-wave sinusoidal current, and at the same time indicates that the inverse acquisition circuit in the ministry collects a sine current, it is judged that the switch is in a positioning state; Current, while the positioning acquisition circuit collects a sinusoidal current, it is judged that the switch machine is in an inverse state; otherwise it is judged that the switch machine is in a four-open state.

When the AC switch module controls the seven-wire switch machine, when the switch machine is positioned, the internal switch of the switch connects the positioning circuit in the display unit with the switch diode, and the inversion circuit in the display unit is in an open state. At this time, it means that the positioning acquisition circuit in the ministry collects a positive half wave sine current, and at the same time indicates that the inverse acquisition circuit in the ministry collects no current, it is determined that the switch is in a positioning state; Current, while the positioning acquisition circuit collects no current, it is judged that the switch machine is in an inverse state; otherwise it is judged that the switch machine is in a four-open state.

Further, the logic section controls the on or off of the positioning acquisition self-test circuit in the presentation section;

When the branch where the positioning acquisition self-check circuit is turned on, it enters a self-test state. Under normal circumstances, the positioning acquisition self-check circuit simultaneously collects valid positive and negative half-wave signals, otherwise it is judged that the positioning acquisition circuit is faulty;

When the branch where the positioning collection self-check circuit is located is disconnected, the switch machine enters the acquisition state, and the switch machine acquires the information.

Through the technical solution of the present invention, the reliability of turnout control can be effectively improved, and the running safety of rail vehicles can be ensured. Other features and advantages of the present invention will be explained in the following description, and partly become apparent from the description, or be understood by implementing the present invention. The objects and other advantages of the present invention can be achieved and obtained by the structures indicated in the description, claims, and drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly explain the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are Some embodiments of the present invention, for those skilled in the art, can obtain other drawings according to these drawings without paying creative labor.

Figure 1 shows a schematic diagram of an AC turnout control system according to the prior art;

2 shows a structural block diagram of an AC turnout module according to an embodiment of the present invention;

3 is a structural block diagram of a logic part in an AC turnout according to an embodiment of the present invention;

4 is a structural block diagram of a driving unit in an AC turnout according to an embodiment of the present invention;

FIG. 5 is a block diagram showing a structure of a display part in an AC turnout according to an embodiment of the present invention; FIG.

FIG. 6 shows a dual-system hot standby AC turnout system according to an embodiment of the present invention.

detailed description

In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are a part of embodiments of the present invention, but not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

FIG. 2 shows a structural block diagram of an AC turnout module according to an embodiment of the present invention. As shown in FIG. 2, the AC turnout module in the embodiment of the present invention adopts a two-by-two structure design method, and includes two switch machine control sections and a logic section. Each switch machine control section includes a drive section and a Display department. The upper and lower switch machine control units including the drive unit and the display unit are respectively connected to the security processing module in the logic module. The two switch machine control units have the same principle but are physically independent.

In the embodiment of the present invention, the AC turnout module mainly includes a driving part, a display part, and a logic part, wherein the driving part and the display part are independent of each other. In the embodiment of the present invention, the following describes the logic part, the driving part, and the presentation part:

Logic department

The logic department implements data interaction with the control network and maintenance network, and completes the functions of communication interaction, control output and acquisition, and safe operation. It consists of 2 out of 2 main control units and cooperates with another logic unit to form 2 by 2 out of 2 structure. FIG. 3 is a schematic diagram of a logic part of a 2 by 2 and 2 structure according to an embodiment of the present invention. As shown in FIG. 3, there are two security processing modules in the logic section: a security processing module I and a security processing module II. Each of the two security processing modules uses two security CPU chips: a security CPU chip. 1 and security CPU chip 2. The safety CPU chip 1 and the safety CPU chip 2 in the safety processing module I implement data connection, and the safety CPU chip 1 and the safety CPU chip 2 are respectively connected to the control network A and the maintenance network A. The structure of the security processing module II is the same as the structure of the security processing module I, and each security CPU chip in the security processing module I and the security processing module II implements data interconnection.

Drive unit

As shown in Figure 2, the drive unit is powered by three-phase alternating current (AC380V) and is connected to the internal motor of the switch machine. During use, the drive can be controlled based on the control instructions of the safety CPU chip in the logic unit. The rut machine performs a fixed rotation action or a reverse rotation action. It mainly includes three-phase power switch circuit, three-phase current isolation acquisition circuit, three-phase electronic switch circuit, commutation and wire conversion circuit. FIG. 4 is a schematic diagram illustrating a further structure of a driving unit according to an embodiment of the present invention.

As shown in FIG. 4, the three-phase power switch circuit includes a safety relay, a safety AND gate and a safety acquisition unit respectively connected to the safety relay. Wherein, the safety AND gate in the three-phase power switch circuit controls the safety relay in the three-phase power switch circuit to implement control of the three-phase electric on-off. The safety AND gate receives dynamic signals of different frequencies sent by each of the safety CPU chips in the safety processing module, so as to control the opening and closing of the safety relay.

In the embodiment of the present invention, the safety relay may adopt switching devices such as a 3 open and 1 closed small safety relay, and the three-phase power of AC380V is accessed through 3 normally open contacts of the 3 open and 1 closed safety relay, respectively. When the switch machine operates, the three normally open contacts of the three-open and one-close safety relay are closed. When a fault occurs, it is necessary to ensure that the drive of the relay is disconnected. The two safety CPU chips in the logic part can send dynamic control signals of different frequencies to the safety AND gate to realize the opening and closing control of the safety relay, and ensure that AC380V power output can be cut off when any CPU fails. The safety acquisition unit in the three-phase power switch circuit can be implemented by a dynamic code acquisition unit that collects the state of the normally closed contact of the safety relay connected to it to ensure that the normally closed contact is closed. Safely collect and send the collected data to a secure CPU chip in the secure processing module.

Wherein, the safety AND gate in the three-phase power switch circuit can control the opening and closing of the safety relay to realize the on-off control of the AC380V current. For example, when a safety failure occurs, the safety The AND gate controls the 3 open and 1 closed relays to execute the action to cut off the power supply of the 380VAC power supply; the safety acquisition circuit monitors the safety relays, obtains the open and closed states of the normally closed contacts of the safety relays, and obtains The open / closed state data is sent to the logic unit. The two safety processing modules in the logic section simultaneously receive the open and close status data to grasp the current status of the relay.

The three-phase current isolation acquisition circuit realizes the collection of the current of each phase line in the three-phase power, and obtains the current amount data (including the current magnitude and phase data) of the three-phase power to determine whether each phase line is An abnormal situation of phase loss, power failure, or overcurrent, and sending the obtained current amount data to the safety CPU chip in the safety processing module I and the safety processing module II.

The outdoor AC switch machine is driven by AC380V three-phase electricity (U, V, W). Any abnormality in one phase will cause the switch machine to fail to drive normally (the motor or the circuit inside the board may be burned out when overcurrent occurs). In the embodiment of the present invention, an independent current detection circuit is designed for each phase (such as the three-phase current isolation acquisition module in FIG. 4), which is used to determine whether the phase line is lacking in phase, power failure, and overcurrent. Once detected, If it is abnormal, it will stop outputting three-phase power of 380V, that is, disconnect the three-phase power switch, and issue an alarm instruction to the safety CPU chip to control the drive unit to the safe side.

The three-phase electronic switch circuit includes three independent electronic switches for controlling on-off of three-phase electricity. Exemplarily, three independent solid-state relays can be used to control the on-off of the three-phase electricity in parallel. The three-phase electronic switch is conducive to improving the reliability and life of the contacts of the safety relay before and after the stage. When the output is required to drive the switch machine, the switch is finally closed or opened, so that the front and rear safety relays can be opened and closed without power.

As shown in FIG. 4, in the embodiment of the present invention, three electronic switches are respectively arranged on the line in the three-phase power. The three-phase electronic switch circuit further includes an electronic switch control section that implements a data connection with a secure CPU chip in the secure processing module. The safety CPU chip can send a control instruction to the electronic switch control section. After receiving the control instruction, the electronic switch control section controls the opening and closing of the electronic switch, thereby controlling the on-off of the three-phase power.

The commutation and wire conversion circuit includes one or more switch circuits, and the switch circuit includes a safety relay, a safety AND gate and a safety acquisition unit respectively connected to the safety relay. As shown in FIG. 4, in the commutation and wire conversion circuits, the conversion from a three-phase line to a five-wire is realized through two switch circuits, and commutation is realized. Wherein, the two switch circuits are respectively connected to the two-phase line, so that two phases in the three-phase current are converted into four wires, and finally the driving circuit is converted into five wires. The safety acquisition unit in the switch circuit collects status data of normally open contacts and normally closed contacts in the safety relay, and these status data include normally open contacts, normally closed contacts opened or closed, or whether adhesion occurs The state of the relay, such as the status of the normally open contact and normally closed contact of the safety relay, is compared with the current relay control signal to determine the status of the relay contact. At the same time, the collected state data is sent to the security CPU chip in the security processing module. In the embodiment of the present invention, it can be sent to the security CPU chip 1 and the security CPU chip 2 at the same time. The safety AND gate in the commutation and wire conversion circuit further implements a data connection with a safety CPU chip in the safety processing module, and implements on-off control of the line based on a control instruction of the safety CPU chip. Specifically, each of the two safety CPU chips in the safety processing module may send a control signal to one or two of the two safety AND gates.

The commutation and wire conversion circuit of the drive unit is connected to the internal motor of the switch machine through an electromagnetic compatibility protection circuit.

Display

As shown in FIG. 2, the display unit is connected to an internal switch of the switch. In operation, the display unit collects the display state information of the switch machine, and sends the collected display state information of the switch machine to the security CPU chip of the logic unit. It mainly includes the electric control circuit and the acquisition and control circuit.

FIG. 5 is a structural diagram of a display unit according to an embodiment of the present invention. The display electrical control circuit of the display unit can be implemented by a transformer, and specifically, AC220V can be converted into two AC48V voltage outputs through a power frequency transformer, and the AC48V voltage is output to the display acquisition and control circuit. The indication acquisition and control circuit of the indication unit includes a indication acquisition circuit, a indication acquisition self-test circuit, and a safety relay, which are connected to the internal switch of the switch machine through an electromagnetic compatibility protection circuit. As shown in FIG. 5, the display part of the embodiment of the present invention adopts a four-wire system, wherein the first and second wires are respectively connected to the first and second ends of the first secondary coil of the transformer, and the third wire The and fourth wires are connected to the first and second ends of the second secondary coil of the transformer, respectively. The four wires are connected to the switching branches of the safety relay, respectively.

The indication acquisition and control circuit is connected with the internal switch of the switch machine, and the state information of the switch machine can be collected during operation. As shown in FIG. 5, the circuit in which the first secondary coil of the transformer is located forms a first loop, and the circuit in which the second secondary coil is located forms a second loop. The first circuit includes a positioning circuit and the second circuit includes an inversion circuit.

The positioning circuit includes a positioning acquisition circuit and a positioning acquisition self-test circuit; the inversion circuit includes an inversion acquisition circuit and an inversion acquisition self-test circuit. The positioning circuit and the inversion circuit are used to judge the representation information of the turnout, that is, to obtain the information that the turnout is in the positioning, inversion, or four-way opening state. Wherein, the positioning acquisition circuit is connected to the second line, and the positioning acquisition self-test circuit is connected between the first line and the second line; the inverse acquisition circuit is connected to the third line, and the inverse acquisition A self-test circuit is connected between the third and fourth lines.

The positioning circuit and the inversion circuit determine whether the turnout is in the positioning, inversion or four-open state through its positioning acquisition circuit and inversion acquisition circuit. When an AC switch controls a five-wire switch machine, and the switch machine is in position, the switch inside the switch connects the positioning circuit with the switch diode, and the inversion circuit is short-circuited. The AC turnout module sends an AC sinusoidal signal to an outdoor switch machine through a positioning circuit and an inversion circuit. The AC sinusoidal signal of the positioning circuit returns a negative half-wave sinusoidal current after indicating the diode. The inversion circuit returns a sinusoidal current due to the short circuit of the switch. . At this time, the positioning acquisition circuit collects the negative half-wave sine current, and at the same time the inverse acquisition circuit collects the sine current, it is judged that the switch is in the positioning state. The same as the positioning acquisition principle, when the inverse acquisition circuit acquires the positive half-wave sine current At the same time, when the positioning acquisition circuit collects a sinusoidal current, it is judged that the switch machine is in an inverse state; when other combinations or abnormal currents are collected, it is judged that the switch machine is in a four-open state. When the AC switch controls the seven-wire switch machine, and the switch machine is in position, the internal switch of the switch machine connects the positioning circuit with the switch diode, and the inversion circuit is in an open state. The AC turnout module sends an AC sinusoidal signal to the outdoor switch machine through a positioning circuit and an inversion circuit. The AC sinusoidal signal of the positioning circuit returns a positive half-wave sinusoidal current after indicating the diode. The inversion circuit has no return current because the switch is disconnected. . At this time, the positioning acquisition circuit collects a positive half-wave sinusoidal current, and at the same time the inverse acquisition circuit collects no current, it is judged that the switch is in a positioning state; the same as the positioning acquisition principle, when the inverse acquisition circuit acquires a positive half-wave sinusoidal current At the same time, if the positioning acquisition circuit collects no current, it is judged that the switch machine is in an inverse state; when other combinations or abnormal currents are collected, it is judged that the switch machine is in a four-open state. The acquisition and self-test circuits are all in a real-time working state and periodically submit status information to the logic department.

The positioning / inversion acquisition self-check circuit is used to determine whether the positioning / inversion acquisition self-test circuit is working normally. After the positioning / inversion acquisition self-test circuit judges that the operation is abnormal, the turnout module is directed to the safe side, that is, the judgment display unit. After the abnormality, the positioning and collecting self-test circuit sends instructions to the safety CPU chip, and the safety CPU chip controls the driving circuit to guide the turnout to the safety side. The positioning acquisition self-test circuit and the inverted bit acquisition self-test circuit can perform a self-test at a certain period, so as to realize the periodic detection of abnormal working of the display unit.

The positioning acquisition self-test circuit is used to determine whether the positioning acquisition circuit works normally. Based on the control instruction sent by the safety CPU chip, the positioning acquisition self-test circuit controls the on or off of the branch where the circuit is located. When the branch where the positioning acquisition self-test circuit is connected is turned on, it short-circuits the external circuit and enters a self-test state. Under normal circumstances, the positioning acquisition self-test circuit should simultaneously collect valid positive and negative half-wave signals, otherwise, the positioning acquisition circuit is judged Failure; when the branch where the positioning acquisition self-check circuit is located is disconnected, the switch point machine enters the acquisition state, and the signal collected by the positioning acquisition circuit is a true representation of the external switch point machine. The reverse bit acquisition self-test circuit works the same as the positioning acquisition self-test circuit.

The positioning circuit and the inversion circuit are connected to the safety relay. Specifically, the first line, the second line, the third line, and the fourth line are respectively connected to the contacts of the four switching branches of the safety relay to implement the positioning circuit and The inversion circuit is connected to the safety relay. The safety relay is controlled by a control circuit to realize the control of each line. The safety CPU chip in the safety processing module sends a control instruction to the control circuit so that the control circuit controls the safety. Opening and closing of the contacts of the relay; the acquisition circuit is connected to the safety relay to collect the status of the normally open contact and the normally closed contact in each branch of the safety relay to determine whether each branch of the safety relay can Normal operation, mainly used to judge whether the coil is open or the contact is stuck, and send collected status data (including normally open contacts, normally closed contacts open or closed) to the safety processing module. Security CPU chip. The positioning acquisition circuit is connected in parallel, and the first end of the parallel-connected circuit is connected to the first end of the first secondary coil, wherein the positioning acquisition circuit is used for acquiring the state indicated by the turnout. The positioning acquisition self-test circuit is connected between the first line and the second line, and is connected to the positioning acquisition circuit. Corresponding to the positioning circuit, an inverted bit acquisition circuit in the inverted bit circuit is connected between a third line and a fourth line, and is connected to the inverted bit acquisition circuit. The safety relay is connected to the internal switch of the switch machine through a protective circuit of the rear plate.

The positioning acquisition self-test circuit and the inverted bit acquisition self-test circuit receive control instructions of the safety CPU chip in the security processing module, and based on the control instruction, the positioning acquisition circuit and the inverted bit acquisition circuit perform acquisition and self-test control.

Based on the above-mentioned AC turnout module, the present invention provides a dual-system hot standby AC turnout system. As shown in FIG. 6, the dual-system hot standby AC turnout system includes two AC turnout modules: an I-series AC turnout module and an II-series AC turnout module. Each series of turnout modules includes one logic section as described above and two switch machine control sections as described above.

The first switch machine control unit in the I series AC turnout module and the first switch machine control unit in the II series turnout module form a square structure, which is controlled by the electromagnetic compatibility protection circuit and the outdoor distribution board in the system. Switch machine; the second switch machine control unit in the I series AC turnout module and the second switch machine control unit in the II series turnout module are also formed as a square structure, and jointly pass the electromagnetic compatibility protection circuit in the system And the outdoor distribution board controls another switch machine.

Each safety CPU in the logic part of the two-series AC turnout module realizes data communication through the inter-system communication line. This dual-system hot standby AC turnout system further effectively improves the safety, reliability and availability of turnout control.

Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or equivalently replace some of the technical features thereof; and these Modifications or replacements do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

An AC turnout device includes a switch machine control section and a logic section. The switch machine control section includes a drive section and a display section that are independent of each other. The logic department implements data connection, where:

The driving unit is configured to control the switch machine to perform a fixed turning or a reversing action based on a control instruction of the logic unit;

The display unit is configured to collect the display information of the switch machine, and send the collected display information of the switch machine to the logic unit.
The AC turnout device according to claim 1, wherein the driving unit includes a three-phase power switch circuit, a three-phase current isolation acquisition circuit, a three-phase electronic switch circuit, and a commutation and wire conversion circuit, wherein:

The three-phase power switch circuit is used to implement on-off control of three-phase AC power;

The three-phase current isolation acquisition circuit is used to implement current collection for each phase of the three-phase power, and is used to determine whether the three-phase power is complete and whether the switch machine is driven in place;

The three-phase electronic switch circuit is used to improve the reliability of the three-phase power switch circuit and the commutation and wire conversion circuit;

The commutation and wire conversion circuit is used to realize the commutation of three-phase electricity and perform multi-wire conversion, and can be used to control a multi-wire switch machine.
The AC turnout device according to claim 2, wherein the three-phase power switch circuit comprises a switch circuit and a safety acquisition unit, wherein:

The switch circuit is configured to perform an opening and closing action based on a control signal to implement on-off control of three-phase AC power;

The safety acquisition unit is configured to acquire an open / close state of the switch circuit.
The AC turnout device according to claim 2, wherein the commutation and wire conversion circuit comprises a plurality of switching circuits, wherein:

Each of the plurality of switching circuits is connected in parallel to two of the three-phase lines of the three-phase alternating current.
The AC turnout device according to claim 4, wherein the switch circuit includes a switch unit, a control unit, and a safety acquisition unit, wherein:

The switch unit can be opened or closed according to a control instruction of the control unit;

The safety acquisition unit is configured to acquire an open / close state of the switch unit.
The alternating turnout device according to claim 2, wherein:

The three-phase current isolation acquisition circuit is further used to determine whether each phase line in the three-phase electrical line is abnormal, and whether the switch machine is driven in place;

The three-phase electronic switch circuit is also used to control the on-off of the three-phase electric circuit.
The AC turnout device according to claim 1, wherein the display unit includes a display electric control circuit and a display acquisition and control circuit, wherein:

The said electric control circuit is used for converting two-phase high-voltage AC power into two-phase low-voltage AC power.

The indication acquisition and control circuit is used for connecting with the internal switch of the switch machine to acquire the display state information of the switch machine.
The switch device according to claim 1, wherein the switch machine control unit includes a first switch machine control unit and a second switch machine control unit, and the logic unit includes a first security processing module and a second security processing Module, where

A drive unit and a display unit in the first switch machine control unit can realize data connection with the first and second security processing modules;

The drive unit and the display unit in the second switch machine control unit can realize data connection with the first and second security processing modules.
A dual-system hot standby AC turnout system includes a first AC turnout device and a second AC turnout device, and each of the first AC turnout device and the second AC turnout device includes a logic section, a first A first switch machine control unit and a second switch machine control unit, wherein,

The first switch machine control section in the first AC switch device and the first switch machine control section in the second AC switch device have a square structure;

The second switch machine control unit in the first AC switch device and the second switch machine control unit in the second AC switch device have a square structure;

The logic part in the first AC turnout device and the logic part in the second AC turnout device communicate through an intersystem bus;

The first switch machine control unit and the second switch machine control unit each include a drive unit and a display unit that are independent of each other, and the drive unit and the display unit can both implement data connection with the logic unit, wherein,

The driving unit is configured to control the switch machine to perform a fixed turning or a reversing action based on a control instruction of the logic unit;

The display unit is configured to collect the display information of the switch machine, and send the collected display information of the switch machine to the logic unit.
A turnout control method based on an AC turnout device according to any one of claims 1-8, the method comprising:

The logic section sends a drive control instruction to the drive section, and the drive section controls the switch machine to perform a fixed rotation or a reverse operation based on the drive control instruction;

The display unit collects the display information of the switch machine and sends the display information to the logic unit.
The turnout control method according to claim 10, wherein:

The three-phase current isolation acquisition circuit in the driving unit detects the state of each phase power in the three-phase power, and sends the state of each phase power to the logic unit, and the logic unit judges after receiving the state of each phase power Whether to instruct the drive unit to guide the safety side.
The turnout control method according to claim 10, wherein:

The AC turnout device sends an AC sinusoidal signal to the outdoor switch machine through a positioning circuit and an inversion circuit, and determines the state of the switch machine by detecting the return current;

When an AC switch device controls a five-wire switch machine, when the switch machine is in position, the switch inside the switch connects the positioning circuit in the display unit with the switch diode, and the inversion circuit in the display unit is short-circuited. At this time, it means that the positioning acquisition circuit in the ministry collects a negative half-wave sinusoidal current, and at the same time indicates that the inverse acquisition circuit in the ministry collects a sine current, it is judged that the switch is in a positioning state; when the inverse acquisition circuit collects a positive half-wave sine Current, while the positioning acquisition circuit collects a sinusoidal current, it is judged that the switch machine is in an inverse state; otherwise it is judged that the switch machine is in a four-open state.
The turnout control method according to claim 10, wherein:

The AC turnout device sends an AC sinusoidal signal to the outdoor switch machine through a positioning circuit and an inversion circuit, and determines the state of the switch machine by detecting the return current;

When an alternating current switch device controls a seven-wire switch machine, when the switch machine is positioned, the internal switch of the switch machine connects the positioning circuit in the display unit with the switch diode, and the inversion circuit in the display unit is in an open state. At this time, it means that the positioning acquisition circuit in the ministry collects a positive half wave sine current, and at the same time indicates that the inverse acquisition circuit in the ministry collects no current, it is judged that the switch is in a positioning state; when the inverse acquisition circuit collects a positive half wave sine Current, while the positioning acquisition circuit collects no current, it is judged that the switch machine is in an inverse state; otherwise it is judged that the switch machine is in a four-open state.
The turnout control method according to any one of claims 10 to 13, wherein:

The logic unit controls the turning on or off of the positioning acquisition self-test circuit in the display unit;

When the branch where the positioning acquisition self-check circuit is turned on, it enters a self-test state. Under normal circumstances, the positioning acquisition self-check circuit simultaneously collects valid positive and negative half-wave signals, otherwise it is judged that the positioning acquisition circuit is faulty;

When the branch where the positioning collection self-check circuit is located is disconnected, the switch machine enters the acquisition state, and the switch machine acquires the information.