CN111090235A - Control system switching device and method - Google Patents
Control system switching device and method Download PDFInfo
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- CN111090235A CN111090235A CN201811238614.8A CN201811238614A CN111090235A CN 111090235 A CN111090235 A CN 111090235A CN 201811238614 A CN201811238614 A CN 201811238614A CN 111090235 A CN111090235 A CN 111090235A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B9/00—Safety arrangements
- G05B9/02—Safety arrangements electric
- G05B9/03—Safety arrangements electric with multiple-channel loop, i.e. redundant control systems
Abstract
The embodiment of the invention discloses a control system switching device, which comprises a switch component and a controller connected with the switch component; the power supply is respectively connected with the two control systems through the switch component; the controller is used for determining a main control system and a standby control system from the two control systems according to a preset rule after the systems are powered on, and controlling the switch component to be communicated with the main control system; when the main control system breaks down, the control switch component is switched to be communicated with the standby control system. The device adopts an automatic switching mode, when the running control system has a fault, the controller realizes the automatic switching of the control system by adjusting the on-off between the switching element and the control system, and the influence caused by untimely switching of the control system in the prior art is effectively reduced. In addition, the application also provides a control system switching method, and the effect is as above.
Description
Technical Field
The invention relates to the technical field of locomotive control, in particular to a control system switching device and a control system switching method.
Background
The microcomputer control system of SS9G locomotive is mainly TPY01 type microcomputer cabinet, and TPY01 type microcomputer control system is mainly composed of microcomputer cabinet and control cabinet. Wherein, the control cabinet is the core part of the microcomputer control system and is provided with A, B two groups of completely identical control systems.
In the prior art, the redundancy switching mode of the microcomputer control system is to switch A, B groups of control system power supplies through a mechanical power supply changeover switch KN 1. The change-over switch KN1 has an interlocking function, only allows a group A or B of control systems in the control system to be powered on to work, and realizes cold standby redundancy of the control system, the structural schematic diagram of the change-over switch is shown in fig. 1, and a user switches the on-off of the control system A and the control system B by toggling the switch KN 1.
However, in this working mode, the user needs to know the running state of the control system before switching the control system, for example, when the user knows that the control system a has a fault, the user will perform the operation of toggling the change-over switch KN1, so that the power supply supplies power to the control system B, and at this time, the control system B starts to work.
In practical application, a user can realize switching of the control system according to fault prompt information in the display screen, but when the microcomputer control system fails but the fault information is not prompted on the display screen, the user cannot know that the control system fails, and the user cannot execute operation of shifting the change-over switch, so that the microcomputer system stops working when the microcomputer system fails, and normal operation of the locomotive is affected.
And adopt the mode of manual switching control system, when the user does not in time learn the suggestion information of control system trouble, for example, when the user is not in front of the display screen, can't discover the trouble suggestion information that shows in the display screen in time, will bring the delay to the switching of control system to bring the influence to the normal operating of locomotive.
Therefore, how to implement automatic switching of the control system is an urgent problem to be solved by those skilled in the art.
Disclosure of Invention
The embodiment of the invention aims to provide a control system switching device and a control system switching method, which can realize automatic switching of a control system.
In order to solve the above technical problem, an embodiment of the present invention provides a switching device for a control system, including a switch component and a controller connected to the switch component;
the power supply is respectively connected with the two control systems through the switch component;
the controller is used for determining a main control system and a standby control system from the two control systems according to a preset rule after the systems are powered on, and controlling the switch component to be communicated with the main control system; and when the main control system has a fault, controlling the switch component to be communicated with the standby control system.
Optionally, the controller is composed of a main locomotive control board in the main control system and a standby locomotive control board in the standby control system.
Optionally, the switch component is a relay.
Optionally, the number of the relays is 1, where each relay includes a main relay coil, a main normally closed contact matched with the main relay coil, a standby relay coil, and a standby normally closed contact matched with the standby relay coil;
the power supply is connected with a main switch power supply in the main control system through the main normally closed contact, and the power supply is connected with a standby switch power supply in the standby control system through the standby normally closed contact and used for supplying power to the main control system and the standby control system;
the main locomotive control board is connected with the standby relay coil and used for outputting a voltage control signal to the standby relay coil after the system is powered on so as to switch the standby normally closed contact into a standby normally open contact;
the spare locomotive control panel with main relay coil is connected, is used for working as the main locomotive control panel stop to during spare relay coil output voltage control signal, when being equipped with normally open contact and switching into being equipped with normally closed contact, to main relay coil output voltage control signal will main normally closed contact switches into main normally open contact.
Optionally, the number of the relays is 2, and the relays are respectively a main relay and a standby relay;
the main relay comprises a main relay coil and a main normally closed contact matched with the main relay coil; the standby relay comprises a standby relay coil and a standby normally closed contact matched with the standby relay coil;
the power supply is connected with a main switch power supply in the main control system through the main normally closed contact, and the power supply is connected with a standby switch power supply in the standby control system through the standby normally closed contact and used for supplying power to the main control system and the standby control system;
the main locomotive control board is connected with the standby relay coil and used for outputting a voltage control signal to the standby relay coil after the system is powered on so as to switch the standby normally closed contact into a standby normally open contact;
the spare locomotive control panel with main relay coil is connected, is used for working as the main locomotive control panel stop to during spare relay coil output voltage control signal, when being equipped with normally open contact and switching into being equipped with normally closed contact, to main relay coil output voltage control signal will main normally closed contact switches into main normally open contact.
Optionally, the preset rule includes respective working times of the two control systems;
correspondingly, the controller is specifically configured to use a control system with matched working time and system time as a master control system and a control system with unmatched working time and system time as a slave control system after the system is powered on.
Optionally, the preset rule includes priority information corresponding to each of the two control systems;
correspondingly, the controller is specifically configured to use the control system with the highest priority as the master control system according to the priority information after the system is powered on.
Optionally, the controller is further configured to control the switch component to communicate with the two control systems simultaneously in a redundant operation mode.
Optionally, the system further comprises a touch display screen;
the touch display screen is connected with the controller and used for transmitting the acquired instruction information to the controller, so that the controller can adjust the working state of the switch component according to the instruction information to control the on-off of the switch component, the main control system and the standby control system.
The embodiment of the invention also provides a control system switching method, which comprises the following steps:
after the system is powered on, determining a main control system and a standby control system from the two control systems according to a preset rule, and controlling a switch component to be communicated with the main control system;
and when the main control system has a fault, controlling the switch component to be communicated with the standby control system and cutting off the communication between the switch component and the main control system.
According to the technical scheme, the control system switching device comprises a switch component and a controller connected with the switch component; the power supply is respectively connected with the two control systems through the switch component; the controller is used for determining a main control system and a standby control system from the two control systems according to a preset rule after the systems are powered on, and controlling the switch component to be communicated with the main control system; when the main control system breaks down, the control switch component is switched to be communicated with the standby control system. The device adopts an automatic switching mode, when the running control system has a fault, the controller realizes the automatic switching of the control system by adjusting the on-off between the switching element and the control system, and the influence caused by untimely switching of the control system in the prior art is effectively reduced. In addition, the application also provides a control system switching method, and the effect is as above.
Drawings
In order to illustrate the embodiments of the present invention more clearly, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained by those skilled in the art without inventive effort.
Fig. 1 is a schematic structural diagram of a switching device of a control system provided in the prior art;
fig. 2 is a schematic structural diagram of a switching device of a control system according to an embodiment of the present invention;
fig. 3 is a flowchart of a method for controlling system switching according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative work belong to the protection scope of the present invention.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Next, a control system switching device provided in an embodiment of the present invention is described in detail. Fig. 2 is a schematic structural diagram of a switching device of a control system according to an embodiment of the present invention, the switching device including a switch component 10 and a controller 11 connected to the switch component 10;
in the embodiment of the present invention, the switch component 10 and the controller 11 cooperate with each other to realize the automatic switching between the two control systems.
In fig. 2, a control system a and a control system B are used to distinguish the two control systems, each control system includes a switching power supply, a power supply board, a digital input/output board and a locomotive control board, and the connection relationship and the working principle between the components of the control system can refer to the prior art, which is not described herein again.
In the embodiment of the present invention, the power supply may be connected to the two control systems through the switch unit 10; the controller 11 is used for determining a main control system and a standby control system from the two control systems according to a preset rule after the systems are powered on, and controlling the switch component 10 to be communicated with the main control system; when the main control system fails, the control switch unit 10 is switched to communicate with the backup control system.
The primary control system may be a control system in an active state and the backup control system may be a control system in an idle state.
The controller 11 may be a device independent of the two control systems, or may be composed of a main locomotive control board in the main control system and a standby locomotive control board in the standby control system. In fig. 2, two locomotive control boards are taken as an example of the controller 11.
In the embodiment of the present invention, the switch member 10 may be a switch device whose on/off is controlled by the controller 11.
In a specific implementation, a relay may be employed as the switching part 10. The relay includes at least one relay coil and at least one contact.
In the embodiment of the present invention, the controller 11 can realize the switching between the two control systems by controlling the power on and off of the control systems, for example, the control system switching device includes a control system a and a control system B, and when the control system a needs to work, the connection between the control system B and the power supply can be cut off; when the control system B is required to work, the connection between the control system A and the power supply can be cut off.
The on-off between the control system and the power supply can be realized by controlling the on-off of contacts in the relay.
In the embodiment of the present invention, a corresponding number of relays may be selected as the switch component 10 according to the specific configuration of the relays.
For example, when one relay simultaneously comprises two relay coils and two relays with two contacts, one relay can meet the switching requirement of the control system.
Taking an example of selecting a relay as the switch component 10, the relay may include a main relay coil, a main normally closed contact matched with the main relay coil, a standby relay coil, and a standby normally closed contact matched with the standby relay coil; the power supply is connected with a main switch power supply in the main control system through a main normally closed contact, and the power supply is connected with a standby switch power supply in the standby control system through a standby normally closed contact and used for supplying power to the main control system and the standby control system.
In the embodiment of the invention, a relay with a normally closed contact as a contact can be selected as a switch component, and because the contact is the normally closed contact, after the system is electrified, a power supply can supply power to the two control systems through the normally closed contact, and at the moment, the control systems are in a running state.
The two control systems have the same structure, and in practical application, only one control system is needed to work. In the embodiment of the present invention, the controller 11 controls the normally closed contact to be opened by supplying power to the relay coil of the relay, so that the connection between the power supply and the control system is disconnected, and the control system is converted into an idle state.
Taking the main locomotive control panel and the standby locomotive control panel as the controller 11 as an example, in specific implementation, the main locomotive control panel in the main control system can be connected with the standby relay coil, and the main locomotive control panel can output a voltage control signal to the standby relay coil after the system is powered on so as to switch the standby normally closed contact into the standby normally open contact.
Correspondingly, can be with being equipped with the locomotive control panel and the main relay coil connection in the control system, when main control system broke down, the locomotive control panel can stop to being equipped with relay coil output voltage control signal, and at this moment, being equipped with normally open contact and switching into being equipped with normally closed contact for power supply and being in the on-state between the control system, power supply can be to being equipped with control system power supply, in order to maintain the normal operating of system. Because the main control system breaks down, the main control system does not need to be supplied with power, at the moment, a standby locomotive control system in the standby control system can output a voltage control signal to a main relay coil, and a main normally closed contact is switched into a main normally open contact so as to cut off the power supply to supply power to the broken-down main control system.
In a specific implementation, the locomotive control board can output a voltage control signal to the relay coil through the digital input and output board.
The voltage value of the voltage control signal can be set according to the size of the power supply.
For example, fig. 2 shows 110V as a power supply, and accordingly, the main locomotive control board can output a 110V voltage control signal to the backup relay coil after the system is powered on.
After the master locomotive control panel exported a voltage control signal to being equipped with the relay coil, can force to be equipped with the relay coil and get electricity, thereby will be equipped with the normally closed contact and open, be equipped with the normally closed contact this moment and switch into by normally open contact, power supply and be equipped with the disconnection of being connected between the control system, thereby be equipped with control system and do not have the mains operated stop work, because the contact of being connected with main control system's switching power supply is main normally closed contact, be in the on-state between power supply and the main control system this moment, power supply can supply power to main control system, in order to maintain the normal operating of system.
With reference to the above-described switching manner of the main/standby control systems, when any one control system fails, the other control system may replace the control system to ensure normal operation of the system.
For example, when a relay consists of only one relay coil and one contact, two relays may be selected as the switch component 10, and the switch component 10 shown in fig. 2 is an example of this type of relay.
Taking two relays as an example of selecting the switch component 10, one control system corresponds to one relay, and the two relays can be respectively called as a main relay and a standby relay aiming at the condition that the control system is divided into a main control system and a standby control system;
the main relay comprises a main relay coil and a main normally closed contact matched with the main relay coil; the standby relay comprises a standby relay coil and a standby normally closed contact matched with the standby relay coil;
the power supply is connected with a main switch power supply in the main control system through a main normally closed contact, and the power supply is connected with a standby switch power supply in the standby control system through a standby normally closed contact and used for supplying power to the main control system and the standby control system; the main locomotive control panel is connected with the standby relay coil and used for outputting a voltage control signal to the standby relay coil after the system is powered on so as to switch the standby normally closed contact into the standby normally open contact; and the standby locomotive control board is connected with the main relay coil and used for outputting a voltage control signal to the standby relay coil when the main locomotive control board stops outputting the voltage control signal to the standby relay coil, and outputting the voltage control signal to the main relay coil when the standby normally-open contact is switched to the standby normally-closed contact, so that the main normally-closed contact is switched to the main normally-open contact.
After the system is powered on, the controller 11 may determine a main control system and a standby control system from the two control systems according to a preset rule, so as to control the switch unit 10 to communicate with the main control system.
The preset rule may be set according to the operating time or priority of the control system.
Taking the working time as an example, the preset rule may include the working time corresponding to each of the two control systems; correspondingly, the controller 11 is specifically configured to use, after the system is powered on, a control system with a matching operating time and system time as a primary control system, and a control system with a non-matching operating time and system time as a secondary control system.
For example, two control systems can be determined according to the odd and even numbers of the dates, wherein the control system a works on the odd number of dates, and the control system B works on the even number of dates; when the system time is even, the control system B is in a running state as a main control system, and the control system A is in an idle state as a standby control system.
By setting the working time of each control system, the working states of the two control systems can be dynamically adjusted, and the phenomenon that an electronic component in the control system is aged when one control system is in an idle state for a long time is effectively reduced.
Taking priority as an example, the preset rule may include priority information corresponding to each of the two control systems; correspondingly, the controller 11 is specifically configured to use the control system with the highest priority as the main control system according to the priority information after the system is powered on.
In practical applications, after the main control system is determined according to the priority, in order to avoid that another control system is in an idle state for a long time, the operating time of the main control system may be limited, for example, after the operating time of the main control system exceeds a preset time value, the controller 11 may adjust the operating mode of the switch unit 10, communicate the switch unit 10 with the standby control system, and disconnect the switch unit 10 from the main control system, at this time, the standby control system is in an operating state, and the main control system is in an idle state.
In the above description, the operation mode that one control system is in an operation state and the other control system is in an idle state is taken as an example for explanation, when the requirement on the system performance is high, in order to implement the uninterrupted automatic switching of the two control systems, the two control systems may be set to operate simultaneously, and for this situation, a specific redundant operation mode may be set.
When the system is in the redundant mode of operation, the controller 11 can control the switch block 10 to communicate with both control systems simultaneously.
Taking the control system switching device shown in fig. 2 as an example, in practical application, after the system is powered on, the controller 11 detects that the system is in a redundant working mode, and at this time, the control board of the main locomotive can realize simultaneous working of the two control systems without outputting a voltage control signal to the coil of the backup relay. Or when the main control system is in a normal operation state, and the controller 11 detects that the system is switched to the redundant operation mode at this time, the control board of the main locomotive can be controlled to stop outputting the voltage control signal to the coil of the backup relay, so that the simultaneous operation of the two control systems can be realized.
By setting a redundant working mode, simultaneous working of two control systems can be realized, different requirements of the system are met, and the applicability of the system is improved.
In the embodiment of the present invention, in order to further improve the flexibility of the switching manner of the control system, a touch display screen convenient for a user to operate may be provided, and the touch display screen is connected to the controller 11 and is used to transmit the acquired instruction information to the controller 11, so that the controller 11 adjusts the working state of the switch component 10 according to the instruction information to control the on/off of the switch component 10 with the main control system and the standby control system.
In practical application, a user can input instruction information for adjusting the working mode of the control system by touching the display screen. For example, the command information may specify which control system is selected as the master control system.
Through setting up touch display screen, the user can be according to the demand, inputs corresponding instruction information in touch display screen to control system's work is adjusted, control system's free switching is realized, control system switches the flexibility of mode has been promoted.
Fig. 3 is a method for controlling system switching according to an embodiment of the present invention, including:
s301: after the system is powered on, a main control system and a standby control system are determined from the two control systems according to a preset rule, and the switch component is controlled to be communicated with the main control system.
The preset rule may be set according to the working time or priority of the control system, and the specific form thereof may be referred to in the related description of the control system switching device, which is not described herein again.
In the embodiment of the invention, the controller can realize the switching of the two control systems by adjusting the working state of the control switch.
After the system is powered on, the controller can select one control system as a main control system according to a preset rule and is communicated with the main control system through the control switch component, so that the power supply supplies power to the main control system, and the main control system is ensured to be in an operating state.
S302: when the main control system breaks down, the control switch component is communicated with the standby control system, and the communication between the control switch component and the main control system is cut off.
When the main control system breaks down, the controller can control the switch component to be communicated with the standby control system so as to realize that the power supply supplies power to the standby control system, and at the moment, the standby control system is switched to work. Because the main control system has a fault and power supply to the main control system is not needed, the controller can cut off the communication between the switch component and the main control system.
The description of the features in the embodiment corresponding to fig. 3 may refer to the related description of the embodiment corresponding to fig. 2, and is not repeated here.
The above describes a control system switching device and method provided by the embodiments of the present invention in detail. The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
Claims (10)
1. A control system switching device is characterized by comprising a switch component and a controller connected with the switch component;
the power supply is respectively connected with the two control systems through the switch component;
the controller is used for determining a main control system and a standby control system from the two control systems according to a preset rule after the systems are powered on, and controlling the switch component to be communicated with the main control system; and when the main control system has a fault, controlling the switch component to be communicated with the standby control system.
2. The apparatus of claim 1, wherein the controller is comprised of a primary locomotive control board in the primary control system and a backup locomotive control board in the backup control system.
3. The apparatus of claim 2, wherein the switching component is a relay.
4. The device of claim 3, wherein the number of the relays is 1, and the relays comprise a main relay coil, a main normally closed contact matched with the main relay coil, a standby relay coil and a standby normally closed contact matched with the standby relay coil;
the power supply is connected with a main switch power supply in the main control system through the main normally closed contact, and the power supply is connected with a standby switch power supply in the standby control system through the standby normally closed contact and used for supplying power to the main control system and the standby control system;
the main locomotive control board is connected with the standby relay coil and used for outputting a voltage control signal to the standby relay coil after the system is powered on so as to switch the standby normally closed contact into a standby normally open contact;
the spare locomotive control panel with main relay coil is connected, is used for working as the main locomotive control panel stop to during spare relay coil output voltage control signal, when being equipped with normally open contact and switching into being equipped with normally closed contact, to main relay coil output voltage control signal will main normally closed contact switches into main normally open contact.
5. The device of claim 3, wherein the number of the relays is 2, and the relays are respectively a main relay and a standby relay;
the main relay comprises a main relay coil and a main normally closed contact matched with the main relay coil; the standby relay comprises a standby relay coil and a standby normally closed contact matched with the standby relay coil;
the power supply is connected with a main switch power supply in the main control system through the main normally closed contact, and the power supply is connected with a standby switch power supply in the standby control system through the standby normally closed contact and used for supplying power to the main control system and the standby control system;
the main locomotive control board is connected with the standby relay coil and used for outputting a voltage control signal to the standby relay coil after the system is powered on so as to switch the standby normally closed contact into a standby normally open contact;
the spare locomotive control panel with main relay coil is connected, is used for working as the main locomotive control panel stop to during spare relay coil output voltage control signal, when being equipped with normally open contact and switching into being equipped with normally closed contact, to main relay coil output voltage control signal will main normally closed contact switches into main normally open contact.
6. The apparatus according to claim 1, wherein the preset rule comprises respective working times of the two control systems;
correspondingly, the controller is specifically configured to use a control system with matched working time and system time as a master control system and a control system with unmatched working time and system time as a slave control system after the system is powered on.
7. The apparatus according to claim 1, wherein the preset rule includes priority information corresponding to each of the two control systems;
correspondingly, the controller is specifically configured to use the control system with the highest priority as the master control system according to the priority information after the system is powered on.
8. The apparatus of claim 1, wherein the controller is further configured to control the switching component to communicate with both of the control systems simultaneously in a redundant mode of operation.
9. The device of any one of claims 1-8, further comprising a touch screen display;
the touch display screen is connected with the controller and used for transmitting the acquired instruction information to the controller, so that the controller can adjust the working state of the switch component according to the instruction information to control the on-off of the switch component, the main control system and the standby control system.
10. A method for controlling system handover, comprising:
after the system is powered on, determining a main control system and a standby control system from the two control systems according to a preset rule, and controlling a switch component to be communicated with the main control system;
and when the main control system has a fault, controlling the switch component to be communicated with the standby control system and cutting off the communication between the switch component and the main control system.
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