CN210897053U

CN210897053U - Control system based on multi-channel feedback signals of switch equipment

Info

Publication number: CN210897053U
Application number: CN201921754406.3U
Authority: CN
Inventors: 李水昌; 刘伟志; 宋术全; 陈义衡; 董鑫嫒; 仇祺沛; 高吉磊; 崔冬冬; 殷振环; 黄楷; 陈文�
Original assignee: China Academy of Railway Sciences Corp Ltd CARS; Locomotive and Car Research Institute of CARS; Beijing Zongheng Electromechanical Technology Co Ltd
Current assignee: China Academy of Railway Sciences Corp Ltd CARS; Locomotive and Car Research Institute of CARS; Beijing Zongheng Electromechanical Technology Co Ltd
Priority date: 2019-10-18
Filing date: 2019-10-18
Publication date: 2020-06-30
Anticipated expiration: 2029-10-18

Abstract

The utility model provides a control system based on switchgear multichannel feedback signal, include: the system comprises a microswitch, a signal processing device connected with an external system and the microswitch, and a motor control device connected with the signal processing device; the microswitch is used for sensing the position of a movable contact of the switch equipment to generate a plurality of paths of feedback signals; the signal processing device receives a control signal of an external system and the multi-path feedback signals, and generates a motor control instruction of the switch equipment according to a path of feedback signal received finally in the multi-path feedback signals and the control signal; the motor control device controls a motor of the switch device according to the motor control instruction, and the motor controls the on and off of a main contact of the switch device. And generating a motor control instruction of the switching equipment according to the last received feedback signal in the multi-path feedback signals and the control signal so as to improve the integrity and effectiveness of all feedback signals of the switching equipment and improve the system stability.

Description

Control system based on multi-channel feedback signals of switch equipment

Technical Field

The utility model relates to a track traffic field especially relates to a control system based on switchgear multichannel feedback signal.

Background

The position of the movable contact of the switchgear is an important basis for the control system to control. With the development of rail transit technology and the increasing complexity of power systems on vehicles, the moving contact of the switch device is required to have multiple feedback signals at a set position to meet multiple purposes, one auxiliary contact can be used at the set position to control other contacts to indirectly generate the multiple feedback signals, and multiple auxiliary contacts can be used to directly generate the multiple feedback signals.

In the application of directly generating multi-path feedback signals by a plurality of auxiliary contacts, when the purpose of the multi-path feedback signals comprises the moving state of a moving contact of a control switch device, the feedback signals for controlling the moving state of the moving contact are changed earlier than the feedback signals for other purposes, a control system directly updates a control command of the moving state of the moving contact according to the feedback signals, when a new control command is stopped, the moving contact is stopped, a linkage structure is stopped, the state of the auxiliary contacts for other subsequent purposes cannot be changed, the corresponding feedback signals cannot be changed, the multi-path feedback signals are incomplete, and the control system misreports the fault of the switch device to influence the stability of the system.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a control system based on switchgear multichannel feedback signal can solve the problem that exists among the prior art at least partially.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a control system based on multiple feedback signals for a switchgear, comprising: the system comprises a microswitch, a signal processing device connected with an external system and the microswitch, and a motor control device connected with the signal processing device;

the microswitch is used for sensing the position of a movable contact of the switch equipment to generate a plurality of paths of feedback signals;

the signal processing device receives a control signal of an external system and the multi-path feedback signals, and generates a motor control instruction of the switch equipment according to a path of feedback signal received finally in the multi-path feedback signals and the control signal;

the motor control device controls a motor of the switch device according to the motor control instruction, and the motor controls the on and off of a main contact of the switch device.

The signal processing device can also be fused with a motor control device, and the microswitch is directly used as a part of a motor control loop.

Further, the micro switch includes: the telescopic trigger rod and the at least two auxiliary switches are arranged on the telescopic trigger rod;

the telescopic trigger rod is positioned on a moving path of the movable contact linkage structure of the switch equipment in an extension state, and sequentially triggers the control ends of the auxiliary switches in a compression process.

Furthermore, the first terminal of the auxiliary switch is connected to the power source terminal of the signal processing device, the second terminal is connected to a feedback signal input terminal of the signal processing device, and the second terminal is also connected to the power source common terminal of the signal processing device through a load circuit.

Further, the control system based on the multi-path feedback signals of the switch device further comprises: a relay;

the first end of one auxiliary switch is connected with the power supply end of the signal processing device, the second end of the auxiliary switch is connected with a feedback signal input end of the signal processing device, and the second end of the auxiliary switch is also connected with the power supply common end of the signal processing device through a load loop;

the first end of another auxiliary switch is connected with the power supply end of the signal processing device, the second end is connected with the power supply common end of the signal processing device through the control coil of a relay, one end of the contact of the relay is connected with the power supply end of the signal processing device, the other end of the contact of the relay is connected with a feedback signal input end of the signal processing device, and the other end of the contact of the relay is also connected with the power supply common end of the signal processing device through a load loop.

Further, the micro switch includes: the device comprises at least two telescopic trigger rods and at least two auxiliary switches which are in one-to-one correspondence with the telescopic trigger rods;

the at least two telescopic trigger rods are arranged on a moving path of the movable contact linkage structure of the switch equipment side by side in an extension state, the movable contact linkage structure of the switch equipment sequentially compresses each telescopic trigger rod in the moving process, and the telescopic trigger rods trigger the control ends of the corresponding auxiliary switches in the compression process.

Further, the retractable triggering lever includes: the trigger head, a telescopic structure and a trigger rod are connected with the trigger head;

the trigger head is arranged on a moving path of the movable contact linkage structure of the switch equipment.

Furthermore, the number of the micro switches is at least two, at least one micro switch is arranged at the position of the movable contact linkage structure in the disconnection state of the switch device and used for sensing the disconnection state of the switch device, and at least one micro switch is arranged at the position of the movable contact linkage structure in the connection state of the switch device and used for sensing the connection state of the switch device.

The utility model provides a control system based on switchgear multichannel feedback signal, include: the system comprises a microswitch, a signal processing device connected with an external system and the microswitch, and a motor control device connected with the signal processing device; the microswitch is used for sensing the position of a movable contact of the switch equipment to generate a plurality of paths of feedback signals; the signal processing device receives a control signal of an external system and the multi-path feedback signals, and generates a motor control instruction of the switch equipment according to a path of feedback signal received finally in the multi-path feedback signals and the control signal; the motor control device controls a motor of the switch device according to the motor control instruction, and the motor controls the on and off of a main contact of the switch device. And generating a control instruction of the switching equipment according to the last received feedback signal in the multi-path feedback signals and the control signal so as to improve the integrity and effectiveness of all feedback signals of the switching equipment and improve the system stability.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts. In the drawings:

fig. 1 is a block diagram of a control system based on multiple feedback signals of a switching device according to an embodiment of the present invention;

fig. 2 shows a first specific structure of a control system based on multiple feedback signals of a switchgear according to an embodiment of the present invention;

fig. 3 shows a second specific structure of the control system based on multiple feedback signals of the switchgear according to the embodiment of the present invention;

fig. 4 shows a third specific structure of the control system based on multiple feedback signals of the switchgear according to the embodiment of the present invention;

fig. 5 shows a fourth specific structure of the control system based on multiple feedback signals of the switchgear according to the embodiment of the present invention;

fig. 6 shows a schematic diagram of the embodiment of the present invention in which the retractable trigger bar of the micro switch is compressed.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The detailed features and advantages of the present invention are described in detail in the following embodiments, which are sufficient for anyone skilled in the art to understand the technical content of the present invention and to implement the present invention, and the related objects and advantages of the present invention can be easily understood by anyone skilled in the art according to the disclosure of the present specification, the claims and the drawings. The following examples further illustrate the aspects of the present invention in detail, but do not limit the scope of the present invention in any way.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

At present, in the application of directly generating multi-path feedback signals by a plurality of auxiliary contacts, when the purpose of the multi-path feedback signals comprises the moving state of a moving contact of a control switch device, the feedback signals for controlling the moving state of the moving contact are changed earlier than the feedback signals for other purposes, a control system directly updates a control command of the moving state of the moving contact according to the feedback signals, when a new control command is stopped, the moving contact is stopped, a linkage structure is stopped, the state of the auxiliary contacts for other subsequent purposes cannot be changed, the corresponding feedback signals cannot be changed, the multi-path feedback signals are incomplete, and the control system misreports the fault of the switch device and influences the stability of the system.

For solving the above-mentioned technical problem that exists among the prior art at least partially, the embodiment of the utility model provides a control system based on switchgear multichannel feedback signal produces this switchgear's control command according to last received feedback signal of the same kind and this control signal among this multichannel feedback signal to improve switchgear's all feedback signal's complete validity, improve system stability.

Fig. 1 is a block diagram of a control system based on multiple feedback signals of a switch device according to an embodiment of the present invention. As shown in fig. 1, the control system based on multiple feedback signals of the switching device comprises: the system comprises a microswitch 2, a signal processing device 3 connected with an external system 4 and the microswitch 2, and a motor control device 5 connected with the signal processing device 3;

it should be noted that the external system 4 and the microswitch 2 may be connected to the signal processing device 3 by wires, specifically, by wires, cables, optical fibers, and the like.

The microswitch 2 is used for sensing the position of a moving contact point of the switch device 1 to generate a multi-path feedback signal. Similarly, the motor control device 5 and the signal processing device 3, and the motor control device 5 and the switch device 1 may be connected wirelessly or by wire.

Wherein the microswitch 2 is a mechanical switch.

The signal processing device 3 receives a control signal of an external system 4 and the multiple feedback signals, and generates a motor control instruction of the switch device 1 according to a last received feedback signal of the multiple feedback signals and the control signal;

the motor control device 5 controls the motor of the switch device 1 according to the motor control instruction, and the motor controls the on and off of the main contact of the switch device.

It is worth to be noted that, after carrying out a great deal of analysis and investigation on the fault of the switch device misreported by the existing control system, the applicant finds that, in the multipath feedback signals of the switch device, the change of the states of different auxiliary contacts has a sequence which is inevitably existed, predictable and fixed, and the change of the multipath feedback signals has a fixed sequence, but the application of the multipath feedback signals in the existing design is not strictly designed according to the sequence of the change of the states of the auxiliary contacts, so that the fault of the switch device misreported is caused.

By adopting the technical scheme, the movable contact of the switch equipment drives the linkage structure to move together when moving, and when the movable contact does not reach the set position, the state of the microswitch is a normal state; when the movable contact moves to a set position, the linkage structure triggers to enable the state of the microswitch to be changed into a triggered state, the triggered state is opposite to a normal state, so that the microswitch feeds back whether the movable contact of the switch equipment is located at the set position or not, the microswitch is connected with the signal processing device, and therefore the feedback signal is changed, and corresponding processing is conducted according to the feedback signal, such as controlling the motion state of the movable contact of the switch equipment. Because the switch equipment movable contact generates a plurality of paths of feedback signals when moving to the set position, and the control instruction of the switch equipment is generated according to the last received path of feedback signal in the plurality of paths of feedback signals and the control signal, the integrity and the effectiveness of all the feedback signals of the switch equipment are improved, and the stability of the system is improved.

Fig. 2 shows a first specific structure of a control system based on multiple feedback signals of a switch device according to an embodiment of the present invention. As shown in fig. 2, the switching device SW includes: the motor M, the screw S, the nut N, the movable contact DC, the fixed contacts SC1 and SC2 and the linkage structure L are fixed together, and the moving states of the nut N, the movable contact DC and the linkage structure L are the same. The motor M rotates to drive the screw S to rotate, the screw cap N drives the movable contact DC to move linearly, the moving state of the movable contact DC comprises three states of stopping, moving close to the fixed contacts SC1 and SC2 and moving far from the fixed contacts SC1 and SC2, and the fixed contacts SC1 and SC2 are fixed. When the motor M stops, the movable contact DC stops; when the motor M rotates forwards, the movable contact DC moves close to the fixed contacts SC1 and SC 2; when the motor M is reversed, the movable contact DC moves away from the stationary contacts SC1 and SC 2. The stationary contacts SC1 and SC2 serve as main circuit terminals T1 and T2 of the switching device, the stationary contacts SC1 and SC2 are not connected, when the moving contact DC is in contact with the stationary contacts SC1 and SC2, closing of the switching device SW is achieved, and when the moving contact DC is separated from the stationary contacts SC1 and SC2, opening of the switching device SW is achieved. The moving contact DC is structurally provided with a space for elasticity when coming into or out of contact with the stationary contacts SC1 and SC 2.

The movable contact DC has two set positions, a first set position P1 corresponding to when the movable contact effects opening of the switch, and a second set position P2 corresponding to when the movable contact effects closing of the switching device. At least two micro switches are provided, at least one micro switch X1 is arranged at the position of the movable contact linkage structure in the switch device opening state, namely the P1 position, and is used for sensing the switch device opening state, and at least one micro switch X2 is arranged at the position of the movable contact linkage structure in the switch device closing state, namely the P2 position, and is used for sensing the switch device closing state. At least two feedback signals are designed for each set position, and the movable contact DC can only move between two set positions P1 and P2.

The control system CTRU includes: microswitches X1 and Y1, signal processing means SPU and motor control means MDR. A microswitch X1 is provided in the first setting position P1 and a microswitch Y1 is provided in the second setting position P2.

The microswitch X1 comprises a telescopic trigger rod TRG11 and two auxiliary switches a11 and B11, wherein the telescopic trigger rod TRG11 can be telescopic, and is kept in an extension state by an elastic structure under the condition of no external force, at the moment, the auxiliary switch a11 is in an open state, the auxiliary switch B11 is in a closed state (the state of the auxiliary switch under the condition of no external force on the telescopic trigger rod can be configured according to actual requirements, and is only illustrated by way of example), the telescopic trigger rod TRG11 can be spatially interfered with the linkage structure L under the extension state, the telescopic trigger rod is positioned on a moving path of a movable contact linkage structure of the switch device under the extension state, and the control ends of the auxiliary switches are sequentially triggered in the compression process. When the motor M drives the movable contact DC and the linkage structure L to move to reach the first setting position P1, the telescopic trigger rod TRG11 is compressed, and when the telescopic trigger rod TRG11 changes from the extension state to the compression state, the switch control end of the auxiliary switch a11 is firstly used to change the state of the auxiliary switch a11 from off to on, and then the switch control end of the auxiliary switch B11 is triggered to change the state of the auxiliary switch B11 from on to off, and the states are fixed in sequence.

The microswitch Y1 comprises a telescopic trigger rod TRG12 and two auxiliary switches a12 and B12, wherein the telescopic trigger rod TRG12 can be telescopic, and is kept in an extension state by an elastic structure under the condition of no external force, at the moment, the auxiliary switch a12 is in an open state, the auxiliary switch B12 is in a closed state (the state of the auxiliary switch under the condition of no external force on the telescopic trigger rod can be configured according to actual requirements, and is only illustrated by way of example), the telescopic trigger rod TRG12 can be spatially interfered with the linkage structure L under the extension state, the telescopic trigger rod is positioned on a moving path of a movable contact linkage structure of the switch device under the extension state, and the control ends of the auxiliary switches are sequentially triggered in the compression process. When the motor M drives the movable contact DC and the linkage structure L to move to the second setting position P2, the telescopic trigger lever TRG12 is compressed, and when the telescopic trigger lever TRG12 changes from the extended state to the compressed state, the state of the auxiliary switch a12 is changed from off to on, and then the state of the auxiliary switch B12 is changed from on to off, and the states are fixed in sequence.

The auxiliary switch a11 has one end connected to a feedback signal input SA11 of the signal processing device SPU, and is also connected to a power supply common terminal COM of the signal processing device SPU via a resistor RA11, and has the other end connected to a power supply terminal VCC of the signal processing device SPU. The feedback signal SA11 is used to detect whether the movable contact DC is in the first set position P1.

The auxiliary switch B11 has one end connected to the feedback signal input SB11 of the signal processing device SPU, and also connected to the power supply common terminal COM of the signal processing device SPU via a resistor RB11, and the other end connected to the power supply terminal VCC of the signal processing device SPU. The feedback signal SB11 is used to control the moving state of the moving contact DC during the opening process.

The auxiliary switch a12 has one end connected to a feedback signal input SA12 of the signal processing device SPU, and is also connected to a power supply common terminal COM of the signal processing device SPU via a resistor RA12, and has the other end connected to a power supply terminal VCC of the signal processing device SPU. The feedback signal SA12 is used to detect whether the movable contact DC is in the second set position P2.

The auxiliary switch B12 has one end connected to the feedback signal input SB12 of the signal processing device SPU, and also connected to the power supply common terminal COM of the signal processing device SPU via a resistor RB12, and the other end connected to the power supply terminal VCC of the signal processing device SPU. The feedback signal SB12 is used to control the state of motion of the moving contact DC during the closing process.

And designing and explaining two feedback signals in the switching-off process of the switch equipment SW.

The control system CTRU receives an open command of the switching device SW from the SPVR of the upper system (i.e., the external system), the signal processing means SPU detects the feedback signals SA11 and SB11, and if SA11 is high and SB11 is low, the switching device SW is considered to be in an open state, and the moving state of the movable contact DC is directly controlled to stop; otherwise, the motor control device MDR controls the motor M to rotate reversely, the moving state of the moving contact DC is to move away from the stationary contacts SC1 and SC2 until the linkage structure L compresses the retractable trigger rod TRG11 of the micro switch X1 at the first setting position P1, firstly, the state of the auxiliary switch a11 is changed from open to closed, the feedback signal SA11 is changed from low level to high level, the signal processing device SPU receives that the moving contact DC of the switch device SW is at the first setting position P1, at this time, the motor M continues to rotate reversely, and the moving contact DC continues to keep moving away from the stationary contacts SC1 and SC 2; then, the state of the auxiliary switch B11 is changed from closed to open, the feedback signal SB11 is changed from high level to low level, the signal processing device SPU updates the moving state of the movable contact DC to stop, the motor control device MDR controls the motor M to stop, and the movable contact DC stops. The two feedback signals are complete and effective, and the operation of switching off the switch device SW is completed.

And designing and explaining two feedback signals in the closing process of the switch device SW.

The control system CTRU receives a closing instruction of the switch device SW from the upper system SPVR, the signal processing device SPU detects the feedback signals SA12 and SB12, if SA12 is high level and SB12 is low level, the switch device SW is considered to be in a closing state, and the moving state of the movable contact DC is directly controlled to be stopped; otherwise, the motor control device MDR controls the motor M to rotate forward, the moving state of the moving contact DC is to move close to the fixed contacts SC1 and SC2, until the linkage structure L compresses the retractable trigger rod TRG12 of the micro switch Y1 at the second setting position P2, firstly, the state of the auxiliary switch a12 is changed from open to closed, the feedback signal SA12 is changed from low to high, the signal processing device SPU receives that the moving contact DC of the switch device SW is at the second setting position P2, at this time, the motor M continues to rotate forward, the moving contact DC continues to move close to the fixed contacts SC1 and SC2, then, the state of the auxiliary switch B12 is changed from closed to open, the feedback signal SB12 is changed from high to low, the signal processing device SPU updates the moving state of the moving contact DC to stop, the motor control device MDR controls the motor M to stop, and the moving contact DC to stop. The two feedback signals are complete and effective, and the operation of closing the switch device SW is completed.

Fig. 3 shows a second specific structure of the control system based on multiple feedback signals of the switchgear according to the embodiment of the present invention. As shown in fig. 3, the structure of the switch device SW is the same as that of the switch device SW shown in fig. 2, and is not described again.

The control system CTRU includes: two microswitches, a signal processing device SPU and a motor control device MDR, wherein one of the microswitches is arranged at a set position P1 and consists of microswitches X21 and X22; the other microswitch is arranged at the set position P2 and consists of microswitches Y21 and Y22.

The micro-sub switch X21 includes a telescopic trigger rod TRGX21 and an auxiliary switch a21, the telescopic trigger rod TRGX21 can be telescopic, and is kept in an extended state by an elastic structure under the condition of no external force, and the auxiliary switch a21 is in an off state (the state of the auxiliary switch under the condition of no external force acting on the telescopic trigger rod can be configured according to actual needs, and is only illustrated here by way of example), and the telescopic trigger rod TRGX21 can be spatially interfered with the linkage structure L under the extended state. When the motor M drives the movable contact DC and the linkage structure L to move to the first setting position P1, the telescopic trigger rod TRGX21 is compressed, the telescopic trigger rod TRGX21 changes from the extended state to the compressed state, and the state of the auxiliary switch a21 changes from open to closed.

The micro-sub switch X22 includes a telescopic trigger rod TRGX22 and an auxiliary switch a22, the telescopic trigger rod TRGX22 can be telescopic, and is kept in an extended state by an elastic structure under the condition of no external force, and the auxiliary switch a22 is in a closed state (the state of the auxiliary switch under the condition of no external force acting on the telescopic trigger rod can be configured according to actual needs, and is only illustrated here by way of example), and the telescopic trigger rod TRGX22 can be spatially interfered with the linkage structure L under the extended state. When the motor M drives the movable contact DC and the linkage structure L to move to the first setting position P1, the telescopic trigger rod TRGX22 is compressed, the telescopic trigger rod TRGX22 changes from the extended state to the compressed state, and the state of the auxiliary switch a22 changes from closed to open.

During the movement of the movable contact DC away from the stationary contacts SC1 and SC2 (the switching device is open) to the first set position P1, X21 is triggered first, and then X22 is triggered.

The micro-sub switch Y21 includes a telescopic trigger bar TRGY21 and an auxiliary switch B21, the telescopic trigger bar TRGY21 can be extended and retracted, and the extension state is maintained by an elastic structure under the condition of no external force, and the state of the auxiliary switch B21 is off (the state of the auxiliary switch under the condition of no external force acting on the telescopic trigger bar can be configured according to practical needs, and is only illustrated here by way of example), and the telescopic trigger bar TRGY21 can interfere with the linkage structure L in space under the extension state. When the motor M drives the movable contact DC and the linkage structure L to move to the second set position P2, the telescopic trigger rod TRGY21 is compressed, the telescopic trigger rod TRGY21 changes from the extended state to the compressed state, and the state of the auxiliary switch B21 changes from open to closed.

The micro-sub switch Y22 includes a telescopic trigger bar TRGY22 and an auxiliary switch B22, the telescopic trigger bar TRGY22 can be extended and retracted, and the extension state is maintained by an elastic structure under the condition of no external force, and the state of the auxiliary switch B22 is closed (the state of the auxiliary switch under the condition of no external force acting on the telescopic trigger bar can be configured according to practical needs, and is only illustrated here by way of example), and the telescopic trigger bar TRGY22 can interfere with the linkage structure L in space under the extension state. When the motor M drives the movable contact DC and the linkage structure L to move to the second set position P2, the telescopic trigger rod TRGY22 is compressed, the telescopic trigger rod TRGY22 changes from the extended state to the compressed state, and the state of the auxiliary switch B22 changes from closed to open.

During the movement of the movable contact DC close to the stationary contacts SC1 and SC2 (the switching device is closed) to the second set position P2, Y21 is triggered first, and then Y22 is triggered.

It is worth to be noted that the retractable trigger rods of the microswitches included in one microswitch are arranged on the moving path of the movable contact linkage structure of the switch device side by side in an extended state, and sequentially compress the retractable trigger rods in the moving process of the movable contact linkage structure of the switch device, and the retractable trigger rods trigger the control ends of the corresponding auxiliary switches in the compressing process.

The auxiliary switch a21 has one end connected to a feedback signal input SA21 of the signal processing device SPU, and is also connected to a power supply common terminal COM of the signal processing device SPU via a resistor RA21, and has the other end connected to a power supply terminal VCC of the signal processing device SPU. The feedback signal SA21 is used to detect whether the movable contact DC is in the first set position P1.

The auxiliary switch a22 has one end connected to a feedback signal input SA22 of the signal processing device SPU, and is also connected to a power supply common terminal COM of the signal processing device SPU via a resistor RA22, and has the other end connected to a power supply terminal VCC of the signal processing device SPU. The feedback signal SA22 is used to control the moving state of the moving contact DC during the opening process.

The auxiliary switch B21 has one end connected to the feedback signal input SB21 of the signal processing device SPU, and also connected to the power supply common terminal COM of the signal processing device SPU via a resistor RB21, and the other end connected to the power supply terminal VCC of the signal processing device SPU. The feedback signal SB21 is used to detect whether the movable contact DC is in the second set position P2.

The auxiliary switch B22 has one end connected to the feedback signal input SB22 of the signal processing device SPU, and also connected to the power supply common terminal COM of the signal processing device SPU via a resistor RB22, and the other end connected to the power supply terminal VCC of the signal processing device SPU. The feedback signal SB22 is used to control the state of motion of the moving contact DC during the closing process.

The control system CTRU receives an opening instruction of the switch device SW from the upper system SPVR, the signal processing device SPU detects feedback signals SA21 and SA22, if SA21 is high level and SA22 is low level, the switch device SW is considered to be in an opening state, and the moving state of the movable contact DC is directly controlled to stop; otherwise, the motor control device MDR controls the motor M to rotate reversely, the moving state of the moving contact DC is to move away from the fixed contacts SC1 and SC2, until the linkage structure L first compresses the retractable trigger rod TRGX21 of the micro-sub switch X21 at the first setting position P1, the state of the auxiliary switch a21 is changed from open to closed, the feedback signal SA21 is changed from low level to high level, the signal processing device SPU receives that the moving contact DC of the switch device SW is at the first setting position P1, at this time, the motor M continuously rotates reversely, and the moving contact DC continuously keeps moving away from the fixed contacts SC1 and SC 2; then the linkage structure L compresses the retractable trigger rod TRGX22 of the micro sub-switch X22 in the first setting position P1, the state of the auxiliary switch a22 is changed from closed to open, the feedback signal SA22 is changed from high level to low level, the signal processing device SPU updates the moving state of the moving contact DC to stop, the motor control device MDR controls the motor M to stop, and the moving contact DC stops. The two feedback signals are complete and effective, and the operation of switching off the switch device SW is completed.

The control system CTRU receives a closing instruction of the switch device SW from the upper system SPVR, the signal processing device SPU detects the feedback signals SB21 and SB22, if SB21 is high level and SB22 is low level, the switch device SW is considered to be in a closing state, and the moving state of the movable contact DC is directly controlled to be stopped; otherwise, the motor control device MDR controls the motor M to rotate forward, the moving state of the moving contact DC is to move close to the stationary contacts SC1 and SC2, until the linkage structure L first compresses the telescopic trigger rod TRGY21 of the micro-electronic switch Y21 at the second setting position P2, the state of the auxiliary switch B21 is changed from open to closed, the feedback signal SB21 is changed from low level to high level, the signal processing device SPU receives that the moving contact DC of the switch device SW is at the second setting position P2, at this time, the motor M continues to rotate forward, and the moving contact DC continues to keep moving close to the stationary contacts SC1 and SC 2; then the linkage structure L compresses the telescopic trigger lever TRGY22 of the micro sub-switch Y22 in the second setting position P2, the state of the auxiliary switch B22 changes from closed to open, the feedback signal SB22 changes from high to low, the signal processing means SPU updates the moving state of the movable contact DC to stop, the motor control means MDR controls the motor M to stop, and the movable contact DC stops. The two feedback signals are complete and effective, and the operation of closing the switch device SW is completed.

Fig. 4 shows a third specific structure of the control system based on multiple feedback signals of the switchgear according to the embodiment of the present invention. As shown in fig. 4, the structure of the switch device SW is the same as that of the switch device SW shown in fig. 2, and will not be described again.

The control system CTRU includes: microswitches X3 and Y3, relays Q31 and Q32, signal processing means SPU and motor control means MDR. A microswitch X3 is provided in the first setting position P1 and a microswitch Y3 is provided in the second setting position P2.

The microswitch X3 comprises a telescopic trigger rod TRG31 and two auxiliary switches a31 and B31, wherein the telescopic trigger rod TRG31 can be telescopic, and is kept in an extension state by an elastic structure under the condition of no external force, the auxiliary switch a31 is in an off state at the moment, the auxiliary switch B31 is in an off state (the state of the auxiliary switch under the condition of no external force on the telescopic trigger rod can be configured according to actual requirements, and is only illustrated here by way of example), the telescopic trigger rod TRG31 can be spatially interfered with the linkage structure L under the extension state, the telescopic trigger rod is positioned on a moving path of a movable contact linkage structure of the switch device under the extension state, and the control ends of the auxiliary switches are sequentially triggered in the compression process. When the motor M drives the movable contact DC and the linkage structure L to move to the first setting position P1, the telescopic trigger lever TRG31 is compressed, and when the telescopic trigger lever TRG31 changes from the extended state to the compressed state, the state of the auxiliary switch a31 is changed from off to on, and then the state of the auxiliary switch B31 is changed from off to on, and the states are fixed in sequence.

The microswitch Y3 comprises a telescopic trigger rod TRG32 and two auxiliary switches a32 and B32, wherein the telescopic trigger rod TRG32 can be telescopic, and is kept in an extension state by an elastic structure under the condition of no external force, the auxiliary switch a32 is in an off state at the moment, the auxiliary switch B32 is in an off state (the state of the auxiliary switch under the condition of no external force on the telescopic trigger rod can be configured according to actual requirements, and is only illustrated here by way of example), the telescopic trigger rod TRG32 can be spatially interfered with the linkage structure L under the extension state, the telescopic trigger rod is positioned on a moving path of the movable contact linkage structure of the switch device under the extension state, and the control ends of the auxiliary switches are sequentially triggered in the compression process. When the motor M drives the movable contact DC and the linkage structure L to move to the second setting position P2, the telescopic trigger lever TRG32 is compressed, and when the telescopic trigger lever TRG32 changes from the extended state to the compressed state, the state of the auxiliary switch a32 is changed from off to on, and then the state of the auxiliary switch B32 is changed from off to on, and the states are fixed in sequence.

The auxiliary switch a31 has one end connected to a feedback signal input SA31 of the signal processing device SPU, and is also connected to a power supply common terminal COM of the signal processing device SPU via a resistor RA31, and has the other end connected to a power supply terminal VCC of the signal processing device SPU. The feedback signal SA31 is used to detect whether the movable contact DC is in the first set position P1.

One end of the auxiliary switch B31 is connected to one end of the control coil CL1 of the relay Q31, and the other end is connected to the power supply terminal VCC of the signal processing device SPU. The other end of control coil CL1 of relay Q31 is connected to a power supply common terminal COM of signal processing device SPU. A contact C31 of the relay Q31 has one end connected to the feedback signal input terminal SC31 of the signal processing device SPU, and is also connected to the power supply common terminal COM of the signal processing device SPU via a resistor RC31, and has the other end connected to the power supply terminal VCC of the signal processing device SPU. When the auxiliary switch B31 is open, the control coil CL1 of the relay Q31 is de-energized and the contact C31 is closed. When the auxiliary switch B31 is closed, the control coil CL1 of the relay Q31 is energized and the contact C31 is open. The feedback signal SC31 is used to control the moving state of the moving contact DC during the opening process.

The auxiliary switch a32 has one end connected to a feedback signal input SA32 of the signal processing device SPU, and is also connected to a power supply common terminal COM of the signal processing device SPU via a resistor RA32, and has the other end connected to a power supply terminal VCC of the signal processing device SPU. The feedback signal SA32 is used to detect whether the movable contact DC is in the second set position P2.

One end of the auxiliary switch B32 is connected to one end of the control coil CL2 of the relay Q32, and the other end is connected to the power supply terminal VCC of the signal processing device SPU. The other end of control coil CL2 of relay Q32 is connected to a power supply common terminal COM of signal processing device SPU. A contact C32 of the relay Q32 has one end connected to the feedback signal input terminal SC32 of the signal processing device SPU, and is also connected to the power supply common terminal COM of the signal processing device SPU via a resistor RC32, and has the other end connected to the power supply terminal VCC of the signal processing device SPU. When the auxiliary switch B32 is open, the control coil CL2 of the relay Q32 is de-energized and the contact C32 is closed. When the auxiliary switch B32 is closed, the control coil CL2 of the relay Q32 is energized and the contact C32 is open. The feedback signal SC32 is used to control the state of motion of the contact DC during closing.

The control system CTRU receives an opening instruction of the switch device SW from the upper system SPVR, the signal processing device SPU detects feedback signals SA31 and SC31, if SA31 is high level and SC31 is low level, the switch device SW is considered to be in an opening state, and the moving state of the movable contact DC is directly controlled to stop; otherwise, the motor control device MDR controls the motor M to rotate reversely, the moving state of the moving contact DC is to move away from the stationary contacts SC1 and SC2 until the linkage structure L compresses the retractable trigger rod TRG31 of the micro switch X3 at the first setting position P1, firstly, the state of the auxiliary switch a31 is changed from open to closed, the feedback signal SA31 is changed from low level to high level, the signal processing device SPU receives that the moving contact DC of the switch device SW is at the first setting position P1, at this time, the motor M continues to rotate reversely, and the moving contact DC continues to keep moving away from the stationary contacts SC1 and SC 2; then, the state of the auxiliary switch B31 is changed from open to closed, the control coil CL1 of the relay Q31 is energized, the contact C31 is opened, the feedback signal SC31 is changed from high level to low level, the signal processing device SPU updates the moving state of the moving contact DC to stop, the motor control device MDR controls the motor M to stop, and the moving contact DC stops. The two feedback signals are complete and effective, and the operation of switching off the switch device SW is completed.

The control system CTRU receives a closing instruction of the switch device SW from the upper system SPVR, the signal processing device SPU detects feedback signals SA32 and SC32, if SA32 is high level and SC32 is low level, the switch device SW is considered to be in a closing state, and the moving state of the movable contact DC is directly controlled to be stopped; otherwise, the motor control device MDR controls the motor M to rotate forward, the moving state of the movable contact DC is to move close to the stationary contacts SC1 and SC2, until the linkage structure L compresses the retractable trigger rod TRG32 of the micro switch Y3 at the second setting position P2, firstly, the state of the auxiliary switch a32 is changed from open to closed, the feedback signal SA32 is changed from low level to high level, the signal processing device SPU receives that the movable contact DC of the switch device SW is at the second setting position P2, at this time, the motor M continues to rotate forward, and the movable contact DC continues to keep moving close to the stationary contacts SC1 and SC 2; then, the state of the auxiliary switch B32 is changed from open to closed, the control coil CL2 of the relay Q32 is energized, the contact C32 is opened, the feedback signal SC32 is changed from high level to low level, the signal processing device SPU updates the moving state of the moving contact DC to stop, the motor control device MDR controls the motor M to stop, and the moving contact DC stops. The two feedback signals are complete and effective, and the operation of closing the switch device SW is completed.

Wherein, through setting up the relay, can realize functions such as signal negation and signal strength regulation, increased control system's flexibility and stability.

Additionally, the embodiment of the utility model provides an among the control system, the switchgear movable contact moves and to set for a plurality of micro-gap switch states that can directly trigger in the position in-process and change, and control system directly selects the last feedback signal that changes that takes place among the multichannel feedback signal to be used for controlling switchgear movable contact motion state. The following steps can be also included: the states of a plurality of micro switches are directly triggered to change in the process that the movable contact of the switch equipment moves to the set position, the micro switch which changes at last controls other contacts to indirectly generate other feedback signals, and the control system selects the indirectly generated feedback signals to control the motion state of the movable contact of the switch equipment. Namely: the feedback signal with the first changed state is used for other purposes, and the feedback signal with the last changed state is directly or indirectly used for controlling the motion state of the movable contact of the switch equipment, so that the integrity and the effectiveness of all the feedback signals of the switch equipment are improved, and the stability of the system is improved.

Fig. 5 shows a fourth specific structure of the control system based on multiple feedback signals of the switchgear according to the embodiment of the present invention. As shown in fig. 5, the structure of the switch device SW is the same as that of the switch device SW shown in fig. 3, and will not be described again.

The control system CTRU includes: the device comprises two microswitches, a signal processing device SPU and a double-pole double-throw switch DP, wherein one of the microswitches is arranged at a set position P1 and consists of microswitches X21 and X22; the other microswitch is arranged at the set position P2 and consists of microswitches Y21 and Y22. The characteristics of the microswitch are the same as those of the second specific structure, and are not described in detail herein.

When the switch device SW is required to be opened, the signal processing device SPU controls the movable contacts d21 and d22 of the double-pole double-throw switch DP to be connected with the first group of fixed contacts d11 and d12, and when the switch device SW is required to be closed, the signal processing device SPU selects the movable contacts d21 and d22 of the double-pole double-throw switch DP to be connected with the second group of fixed contacts d31 and d 32. The moving contacts d21, d22 of the double-pole double-throw switch DP are necessarily connected with the first group of fixed contacts d11, d12 or the second group of fixed contacts d31, d32, and the moving contacts d21, d22 of the double-pole double-throw switch DP are also connected with the power ports n, p of the motor M. The first group of static contacts d11 is connected with a power supply VCC, the first group of static contacts d12 is connected with one end of an auxiliary switch A22, the other end of the auxiliary switch A22 is connected with a power supply common terminal COM, the second group of static contacts d32 is connected with the power supply VCC, the second group of static contacts d31 is connected with one end of an auxiliary switch B22, and the other end of the auxiliary switch B22 is connected with the power supply common terminal COM.

The signal processing device SPU is responsible for controlling the movable contacts d21, d22 of the double-pole double-throw switch DP to be connected with the first group of fixed contacts d11, d12 or the second group of fixed contacts d31, d32, and does not control the on-off of the power supply of the motor M. The on-off of the power supply of the motor M is controlled by a corresponding auxiliary switch.

The switching device SW disconnects the process motor M operation and the design specification of the feedback signal.

The control system CTRU receives the switch-off command of the switch device SW from the upper system SPVR, the signal processing means SPU controls the movable contacts d21, d22 of the double pole double throw switch DP to connect with the first group of stationary contacts d11, d12, the power supply forms a loop through the double pole double throw switch DP, the motor M and the auxiliary switch a22, and the power supply to the motor M is negative at this time. The signal processing means SPU simultaneously detect the feedback signal SA 21. If the auxiliary switch A22 is in an off state, the power supply circuit of the motor M is disconnected by the auxiliary switch A22, and the motor M stops; otherwise, the closed auxiliary switch a22 applies a negative power source to the motor M, the motor M rotates reversely, the moving state of the moving contact DC is to move away from the fixed contacts SC1 and SC2 until the linkage structure L first compresses the telescopic trigger rod TRGX21 of the micro-sub switch X21 at the first set position P1, the state of the auxiliary switch a21 changes from open to closed, the feedback signal SA21 changes from low level to high level, the signal processing device SPU receives the moving contact DC of the switch device SW at the first set position P1, at this time, the motor M rotates reversely, and the moving contact DC keeps moving away from the fixed contacts SC1 and SC 2; then, the link structure L compresses the retractable trigger lever TRGX22 of the micro sub-switch X22 at the first setting position P1, the state of the auxiliary switch a22 is changed from closed to open, the power supply circuit of the motor M is opened by the auxiliary switch a22, and the motor M is stopped. The control of the motor M is completed, the feedback signal SA21 is fully active, and the operation of switching off the switching device SW is completed.

And (4) design description of the motor M working and feedback signals during the closing process of the switch device SW.

The control system CTRU receives a closing command of the switch device SW from the upper system SPVR, the signal processing means SPU controls the movable contacts d21, d22 of the double pole double throw switch DP to connect with the second group of stationary contacts d31, d32, the power supply forms a loop through the double pole double throw switch DP, the motor M and the auxiliary switch B22, and the power supply to the motor M is positive at this time. The signal processing means SPU simultaneously detect the feedback signal SB 21. If the auxiliary switch B22 is in an off state, the power supply circuit of the motor M is disconnected by the auxiliary switch B22, and the motor M stops; otherwise, the closed auxiliary switch B22 applies positive power to the motor M, the motor M rotates forward, the moving state of the moving contact DC moves close to the stationary contacts SC1 and SC2, until the linkage structure L first compresses the telescopic trigger bar TRGY21 of the micro-electronic switch Y21 at the second setting position P2, the state of the auxiliary switch B21 changes from open to closed, the feedback signal SB21 changes from low level to high level, the signal processing SPU receives the moving contact DC of the switch device SW at the second setting position P2, at this time, the motor M rotates forward continuously, and the moving contact DC keeps moving close to the stationary contacts SC1 and SC 2; then the link structure L compresses the retractable trigger lever TRGY22 of the micro sub-switch Y22 at the second setting position P2, the state of the auxiliary switch B22 changes from closed to open, the power supply circuit of the motor M is opened by the auxiliary switch B22, and the motor M stops. The control of the motor M is completed, the feedback signal SB21 is fully active, and the operation of closing the switching device SW is completed.

In an alternative embodiment, referring to fig. 6, the retractable trigger bar comprises: the trigger head G1, a telescopic structure G2 and a trigger rod G3 which are connected with the trigger head;

the trigger head G1 is arranged on the moving path of the movable contact linkage structure of the switch device.

In addition, the telescopic structure can be realized by adopting a spring.

The present invention has been explained by using specific embodiments, and the explanation of the above embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and although the present invention has been disclosed with reference to the above preferred embodiment, it is not intended to limit the present invention, and any person skilled in the art can make modifications or changes equivalent to the above disclosed technical content without departing from the scope of the present invention, but all simple modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A control system based on multiple feedback signals of a switch device is characterized by comprising: the system comprises a microswitch, a signal processing device connected with an external system and the microswitch, and a motor control device connected with the signal processing device;

the signal processing device receives a control signal of an external system and the multiple feedback signals, and generates a motor control instruction of the switch equipment according to a last received feedback signal in the multiple feedback signals and the control signal;

and the motor control device controls the motor of the switch equipment according to the motor control instruction, and the motor controls the on and off of the main contact of the switch equipment.

2. The switchgear multi-feedback signal based control system of claim 1, wherein the micro switch comprises: the telescopic trigger rod and the at least two auxiliary switches are arranged on the telescopic trigger rod;

3. The switch device multi-feedback signal based control system according to claim 2, wherein the auxiliary switch has a first terminal connected to a power terminal of the signal processing device, a second terminal connected to a feedback signal input terminal of the signal processing device, and the second terminal is further connected to a power common terminal of the signal processing device through a load loop.

4. The switchgear multi-feedback signal based control system of claim 2, further comprising: a relay;

the first end of the other auxiliary switch is connected with the power supply end of the signal processing device, the second end of the other auxiliary switch is connected with the power supply common end of the signal processing device through the control coil of a relay, one end of a contact of the relay is connected with the power supply end of the signal processing device, the other end of the contact of the relay is connected with a feedback signal input end of the signal processing device, and the other end of the contact of the relay is also connected with the power supply common end of the signal processing device through a load loop.

5. The switchgear multi-feedback signal based control system of claim 1, wherein the micro switch comprises: the device comprises at least two telescopic trigger rods and at least two auxiliary switches which are in one-to-one correspondence with the telescopic trigger rods;

6. The switchgear multi-feedback signal based control system of claim 5,

the first end of the auxiliary switch is connected with the power supply end of the signal processing device, the second end of the auxiliary switch is connected with a feedback signal input end of the signal processing device, and the second end of the auxiliary switch is also connected with the power supply common end of the signal processing device through a load loop.

7. The switchgear multi-feedback signal based control system according to any one of claims 2 to 6, wherein the retractable trigger lever comprises: the trigger head, a telescopic structure and a trigger rod are connected with the trigger head;

8. The switchgear based control system as claimed in any one of claims 1 to 6, wherein the number of the micro switches is at least two, at least one micro switch is disposed at the position of the movable contact linkage structure in the open state of the switchgear for sensing the open state of the switchgear, and at least one micro switch is disposed at the position of the movable contact linkage structure in the closed state of the switchgear for sensing the closed state of the switchgear.