CN207529200U - Reclosing switchs - Google Patents

Abstract

The utility model provides a kind of reclosing switch, including detection control unit, logic control element, position detection unit and motor control unit；Detection control unit, for signal to be controlled to input；Logic control element couples the detection control unit and the motor control unit, when receiving a control signal, the motor control unit is controlled to perform corresponding actions；The motor control unit includes motor and motor driving and braking circuit, the input terminal of the motor driving and braking circuit couples the logic control element, output terminal couples the motor, and the brake signal for the output of response logic control unit controls motor brake；Position detection unit couples the logic control element and the motor control unit, for detecting whether the action response of motor control unit generates brake signal in place.Whether the detectable motor of the utility model reclosing switch works normally, real-time starting protection function.

Description

Reclosing switchs

Technical field

The utility model is related to reclosing switching technique field, more particularly to a kind of reclosing switch that can save energy.

Background technology

At present, just increasingly extensively, especially domestic intelligent protection switch has also obtained extensively for the use of small intelligent Switching General application.This kind of reclosing switch is typically all active equipment, i.e., this kind of switch needs to consume electric energy when working normally, therefore Micro energy lose design must be carried out to this kind of switch, reduce its quiescent dissipation as far as possible, realize energy-saving purpose, overlap simultaneously Lock switch needs to be automatically brought into operation function, therefore the automatic reclosing operation and control function of small design switch is also imperative.

Utility model content

The utility model provides a kind of reclosing switch, solves the problems, such as existing above-mentioned.

To solve the above problems, the utility model embodiment provides a kind of reclosing switch, including detection control unit, patrol Collect control unit, position detection unit and motor control unit；

Detection control unit, for signal to be controlled to input；

Logic control element couples the detection control unit and the motor control unit, when receiving control signal When, the motor control unit is controlled to perform corresponding actions；

The motor control unit includes motor and motor driving and braking circuit, motor driving and braking circuit Input terminal couples the logic control element, and output terminal couples the motor, and the driving exported for response logic control unit/ Brake signal controls electric motor starting/stopping；

Position detection unit couples the logic control element and the motor control unit, for detecting motor control Whether the action response of unit generates driving/brake signal in place.

As a kind of embodiment, power supply and voltage sampling unit and power supply unit are further included；

Alternating current is converted into the direct current that reclosing switch uses by power supply and voltage sampling unit, external alternating current, and Voltage sample is carried out to power supply unit, generates sampled voltage signal；

Power supply unit, coupling power supply and voltage sampling unit receive the direct current of power supply and voltage sampling unit unit, and Direct current is converted into the electricity consumption for reclosing switch normal operating conditions；

Detection control unit further includes voltage fault signal detection circuit, the input terminal coupling of voltage fault signal detection circuit Connect power supply and voltage sampling unit, output terminal couples logic control unit, for by sampled voltage signal respectively with upper limit threshold It is compared with lower threshold, overvoltage/under-voltage fault signal is generated according to comparison result；

Logic control element coupling power supply and voltage sampling unit, voltage fault signal detection circuit and power supply unit, When not detecting the input of control signal and overvoltage/under-voltage fault signal, then reclosing switch closes power supply unit power supply, into Power consumption state in a subtle way.

As a kind of embodiment, the power supply unit includes power on-off control circuit and power circuit；

Power on-off control circuit couples the power supply and voltage sampling unit, logic control element and power circuit, It receives and responds DC power supply and the power control signal controlling power circuit and logic control element of logic control element are normal Start；

Power circuit couples the logic control element, provides the electricity consumption of logic control element in normal operation.

As a kind of embodiment, the power on-off control circuit includes first switch module and second switch module；

First switch module couples the power supply and voltage sampling unit and power circuit, passes through first switch module On or off control power supply and voltage sampling unit are powered to power circuit；

Second switch module couples the logic control element, the power control signal generation of response logic control unit The switch control signal of first switch module is acted on, first switch module responds the switch control signal on or off.

As a kind of embodiment, the first switch module includes first switch pipe and first switch control submodule, The grid of first switch pipe couples the first switch control submodule, the drain electrode coupling power supply and voltage sampling unit and the One switch control submodule, source electrode couple the power circuit, and first switch control submodule is used to provide first switch pipe Grid voltage；

The second switch module includes second switch pipe and second switch control submodule, the grid coupling of second switch pipe The second switch control submodule is connect, drain electrode couples the first switch control submodule, source electrode coupling second switch control Submodule and ground connection, second switch control submodule couples logic control unit and power supply and voltage sampling unit, for responding Power control signal simultaneously generates the grid voltage for being used for second switch pipe.

As a kind of embodiment, the second switch control submodule include the first divider resistance, the second divider resistance, Capacitance, voltage-stabiliser tube and transistor, one end of first divider resistance couple the power supply and voltage sampling unit, the other end Couple one end of the second divider resistance, the collector of the other end coupling transistors of the second divider resistance, the emitter of transistor The connecting node of ground connection, the base stage coupling logic control element, the first divider resistance and the second divider resistance is respectively coupled to electricity The grid of one end of appearance, the cathode of voltage-stabiliser tube and second switch pipe, the other end ground connection of capacitance, the plus earth of voltage-stabiliser tube.

As a kind of embodiment, the power supply and voltage sampling unit include lowering and stabilizing blood pressure module, for being described heavy Closing switch provides operating current during micro energy lose state.

As a kind of embodiment, the power circuit include transformer, control integrated circuit, voltage-regulating circuit and Serial regulating circuit and the input terminal for controlling integrated circuit, the primary side coupling power on-off control circuit of transformer, transformer Secondary couples the input terminal of serial regulating circuit, and the output terminal couples logic control unit of serial regulating circuit controls integrated electricity The output terminal coupling voltage-regulating circuit on road, voltage-regulating circuit are also coupled to the input terminal of serial regulating circuit.

As a kind of embodiment, the power circuit includes negative peak clamp circuit, the input terminal coupling of negative peak clamp circuit Connect the output terminal of power on-off control circuit, the primary side of output terminal coupling transformer and the input terminal of control integrated circuit.

The beneficial effects of the utility model compared with the prior art lie in：After reclosing switchs normal power supply, do not having In the case of voltage failure and control signal input, reclosing switch enters micro energy lose working condition after of short duration delay, if There are supply voltage failure or the input of division operating control signal, then by triggering wake-up signal wakeup logic control unit, enter Corresponding function module is opened in normal operating conditions, logic control element control, handles the event behaviour of corresponding separating brake or combined floodgate Make, in operation, position detection unit detection switch operates the position of transmission shaft, cooperation logic control element control motor Operation, the control of motor control unit unit controlled by logic open or stop motor work, and do necessary brake, Make motor rapid starting/stopping, and position is accurate, that realizes switch is automatically brought into operation function.Reclosing switch completes all kinds of event handlings After work, micro energy lose working condition is re-entered into, realizes the function of reclosing switch low-power consumption.

Description of the drawings

Fig. 1 is the module connection figure that the reclosing of the utility model switchs；

Fig. 2 is the circuit diagram of the power supply that the reclosing of the utility model switchs and voltage sampling unit；

Fig. 3 is the circuit diagram of power on-off control circuit that the reclosing of the utility model switchs；

Fig. 4 is the circuit diagram of power circuit that the reclosing of the utility model switchs；

Fig. 5 is the circuit diagram of detection control unit that the reclosing of the utility model switchs；

Fig. 6 is the circuit diagram of logic control element that the reclosing of the utility model switchs；

Fig. 7 is the circuit diagram of position detection unit that the reclosing of the utility model switchs；

Fig. 8 is the circuit diagram of motor control unit that the reclosing of the utility model switchs.

Attached drawing marks：1st, power supply and voltage sampling unit；2nd, power supply unit；21st, power on-off control circuit；22nd, power supply Circuit；3rd, detection control unit；4th, logic control element；5th, position detection unit；6th, motor control unit.

Specific embodiment

Below in conjunction with attached drawing, to the utility model, above-mentioned and other technical characteristic and advantage carry out clearly and completely Description, it is clear that described embodiment is only the section Example rather than whole embodiments of the utility model.

As shown in Figure 1, power supply and voltage sampling unit 1 provide all working power supply of reclosing switch, including micro energy lose Static maintenance power supply during work, while sampled voltage signal is provided, provide voltage monitoring signal for detection control unit 3.Electricity The control of 2 unit 4 controlled by logic of source unit, to control normal work power supply when reclosing switchs normal operating conditions.Inspection The trigger signal that control unit 3 provides reclosing switch state according to sampled voltage signal for logic control element 4 is surveyed, is made Logic control element 4 switchs to normal operating conditions from micro energy lose state, opens simultaneously power supply unit 2 and powers, and carries out corresponding work( It can handle, after having handled relevant work, the working condition of micro energy lose is reentered according to the state of trigger event level, so as to real The micro energy lose job requirement of reclosing switch is showed.

As shown in Fig. 2, power supply and voltage sampling unit 1 include surge protection circuit, rectification circuit, overvoltage crowbar, Voltage sample circuit, decompression voltage regulator, voltage source and reference circuit, the input terminal coupling alternating current of surge protection circuit are defeated Outlet couples rectification circuit, and the input terminal coupling rectification circuit of overvoltage crowbar, output terminal coupling power supply unit 2, voltage takes Sample circuit is respectively coupled to rectification circuit, logic control element 4, detection control unit 3 and lowering and stabilizing blood pressure unit, lowering and stabilizing blood pressure list Member is respectively coupled to overvoltage crowbar and voltage source, reference circuit coupling voltage source and detection control unit 3.Rectification circuit D1's 1st, 3 two ports are accessed by interface J1 and interface J2 in alternating current, between varistor RV1 coupling interfaces J1 and interface J2, heat 2 ports of the input terminal coupling rectification circuit D1 of quick resistance PTC_R1, output terminal couple the input terminal of power supply unit 2, transient state suppression The output terminal of tubulation D3 coupling thermistors PTC_R1.Resistance R1~R4 and resistance R9 composition voltage sample circuits, resistance R2, Resistance R3, resistance R4 and resistance R9 are connected in series with, 2 ports of one end coupling rectification circuit D1 of resistance R2, and the one of resistance R1 Hold couples logic control unit 4, connecting node and detection control unit 3, the logic of other end coupling resistance R4 and resistance R9 Control unit 4.Resistance R5~R7 is the decompression current-limiting resistance being sequentially connected in series, and one end couples the output of thermistor PTC_R1 End, other end coupling form decompression voltage regulator, essence by diode D4, zener diode D2, capacitance C1 and capacitance C2 To couple the anode of diode D4.Decompression voltage regulator is also coupled to resistance R11 and voltage source U1.Reference circuit includes divider resistance R8 and R10,4 ports of one end coupling coupling rectification circuit D1 of reference circuit, the other end coupling voltage source U1 of reference circuit. For varistor RV1 for providing surge protection, the electric main of access is converted to direct current by rectification circuit D1, passes through temperature-sensitive electricity PTC_R1 connections power supply unit 2 is hindered, thermistor PTC_R1 and transient state inhibit pipe D3 cooperations that can play the role of overvoltage protection, root The voltage value for inhibiting pipe according to transient state is different, it may be determined that different over-voltage protection points.Voltage sample circuit is single to detection control Member 3 provides sampled voltage signal, and voltage failure analysis is carried out, while provide to logic control element 4 for the detection control unit 3 Sampled voltage signal carries out accurate voltage analysis for logic control element 4.By resistance R5~R7 form decompression current-limiting resistance and Decompression voltage regulator is formed by diode D4, diode D2, capacitance C1, capacitance C2, closing switch of attaching most importance to provides micro energy lose state When maintenance power supply.The precision voltage source being made up of simultaneously resistance R11 and voltage source U1, and pass through resistance R8 and resistance R10 Partial pressure, provide reference voltage for detection control unit 3, be relatively used as voltage.

As shown in Figure 1, power supply unit 2 includes power on-off control circuit 21 and power circuit 22, power switch control electricity Road 21 coupling power supply and voltage sampling unit 1, logic control element 4 and power circuit 22, receive and respond DC power supply and The power control signal of logic control element 4, controlling power circuit 22 and logic control element 4 normally start.Power circuit 22 Couples logic control unit 4, for providing the electricity consumption of logic control element 4 in normal operation.

As shown in figure 3, power on-off control circuit 21 includes first switch module and second switch module, first switch mould Block coupling power supply and voltage sampling unit 1 and power circuit 22, by the on or off control power supply of first switch module and Voltage sampling unit 1 is powered to power circuit 22；Second switch module couples logic control element 4, response logic control unit 4 Power control signal nucleus formation in the switch control signal of first switch module, the first switch module response switch control Signal conduction processed or shutdown.First switch module includes first switch pipe and for providing first switch tube grid control voltage First switch control submodule, the field effect transistor switch pipe Q20 in first switch pipe, that is, figure, first switch control submodule include according to The grid coupling resistance R26 of resistance R23~R26 of secondary series connection, field effect transistor switch pipe Q20, drain coupling resistance R23, source electrode coupling Power circuit 22 is connect, wherein, the connecting node coupling second switch module of resistance R25 and resistance R26.Second switch module includes Second switch pipe and the second switch control submodule for providing second switch tube grid control voltage, second switch pipe are schemed In field effect transistor switch pipe Q21, second switch control submodule include resistance R20~R22, capacitance C20, voltage-stabiliser tube D21, resistance R27, resistance R28 and transistor Q22, resistance R20, resistance R21, resistance R22 and resistance R27 are sequentially connected in series, resistance R22 and The grid of the connecting node coupling field effect transistor switch pipe Q21 of resistance R27, the drain electrode coupling resistance R25 of field effect transistor switch pipe Q21 and The connecting node of resistance R26, source electrode ground connection, voltage-stabiliser tube D21 and capacitance C20 be respectively coupled to the grid of field effect transistor switch pipe Q21 with Between source electrode, the collector of one end coupling transistors Q22 of resistance R27, the emitter of transistor Q22 is grounded, and base stage passes through electricity Hinder R28 couples logics control unit 4.

DC power supply behind commercial power rectification provides power supply by the control of field effect transistor switch pipe Q20 for power circuit 22, the One switch control submodule provides grid-control voltage for field effect transistor switch pipe Q20, and the voltage is by field effect transistor switch pipe Q21's Control, resistance R20~R22, capacitance C20, voltage-stabiliser tube D21, resistance R27, transistor Q22 and R28 composition field effect transistor switch pipe The grid control circuit of Q21.In the moment that entire circuit powers on, since logic control element 4 does not have started work, so crystal Pipe Q22 is in cut-off state, due to the integral action of capacitance C20 so that the grid voltage of field effect transistor switch pipe Q21 be one by Low to high process, the time of this process is by the size of the sum of the resistance value of resistance R20~R22 and the size of capacitance C20 Control.When the grid voltage of field effect transistor switch pipe Q21 is less than before its conducting voltage, field effect transistor switch pipe Q21 is in cut-off state, This stage field effect transistor switch pipe Q20 grid voltage always above its conducting voltage, therefore field effect transistor switch pipe Q20 is always It is in the conduction state, so the DC power supply behind commercial power rectification is powered by field effect transistor switch pipe Q20 to power circuit 22, so as to Power circuit 22 and logic control element 4 is made to start and enter normal operating conditions.It can be at once after the startup of logic control element 4 The power control signal of high level is exported, transistor Q22 is connected, makes the grid-control voltage of field effect transistor switch pipe Q21 in this way Its conducting voltage is just always below, field effect transistor switch pipe Q21 is made to be constantly in cut-off state, so as to make field effect transistor switch pipe Q20 Conducting state is constantly in, power circuit 22 and logic control element 4 is also just made to be constantly in normal operating conditions in this way.When into In a subtle way power consumption mode when, logic control element 4 exports low level power control signal, make transistor Q22 end, capacitance C20 It gradually charges, the grid-control voltage of field effect transistor switch pipe Q21 is made to reach its conducting voltage within the time of design, makes field-effect Switching tube Q21 enters conducting state, so as to which the grid-control voltage for making field effect transistor switch pipe Q20 drags down, and then open field-effect It closes pipe Q20 and enters cut-off state, power circuit 22 is stopped.At this moment the static of all micro energy lose operating circuits maintains power supply just It is provided by power supply and voltage sampling unit 1.Conversely, when circuit is restored to normal mode of operation from micro energy lose operating mode, Logic control element 4 exports the power control signal of high level, and transistor Q22 is connected, and opens field-effect after capacitance C20 electric discharges Pipe Q21 cut-offs, field effect transistor switch pipe Q20 conductings are closed, the startup of power circuit 22 makes entire circuit enter normal operating conditions.

As shown in figure 4, power circuit 22 includes negative peak clamp circuit, transformer, current rectifying and wave filtering circuit, the integrated electricity of control Road, voltage-regulating circuit and serial regulating circuit, the input terminal coupling power on-off control circuit 21 of negative peak clamp circuit Output terminal, the primary side of output terminal coupling transformer and the input terminal of control integrated circuit, the secondary coupling rectifying and wave-filtering of transformer The input terminal of circuit, the input terminal of the output terminal coupling serial regulating circuit of current rectifying and wave filtering circuit, the output of serial regulating circuit Couples logic control unit 4 is held, the output terminal of integrated circuit is controlled to couple voltage-regulating circuit, voltage-regulating circuit is also coupled to go here and there Join the input terminal of regulator circuit.Wherein, the input terminal of negative peak clamp circuit is additionally provided with filter capacitor C30.Negative peak clamp circuit packet Diode D30 and voltage-stabiliser tube D31 are included, current rectifying and wave filtering circuit includes voltage-stabiliser tube D32, capacitance C31~C32, voltage-regulating circuit packet Resistance R30~R31 and capacitance C37 is included, the output voltage of power circuit 22 is made to meet design requirement.By capacitance C33~C35 and The serial regulating circuit of series voltage regulator U30 compositions, for improving the ripple factor of power supply output, power supply output was detection Control unit 3 and logic control element 4 provide the working power of normal condition.

As shown in figure 5, detection control unit 3 include voltage fault signal detection circuit, control signal deteching circuit and Trigger circuit, the input terminal coupling power supply of voltage fault signal detection circuit and voltage sampling unit 1, output terminal coupling triggering electricity The input terminal on road, the output terminal couples logic control unit 4 of trigger circuit；The input terminal of control signal deteching circuit passes through interface J40 receives externally input control signal, and output terminal couples the input terminal of trigger circuit.Voltage fault signal detection circuit includes Upper limit comparison module and lower limit comparison module, two input terminal ends coupling voltage sample circuit of upper limit comparison module and benchmark electricity Road, the two input terminal ends coupling voltage sample circuit and reference circuit of lower limit comparison module, specifically, power supply and voltage sample The Vina+ pins and Vinb- pins of sampled voltage signal coupling voltage fault signal detection circuit U41 that unit 1 exports, Vina- pins and Vinb+ pins connect the upper limit threshold and lower threshold of reference circuit respectively.Voltage fault signal detection circuit is also Including stretch circuit and pulse bandwidth filtering circuit, the input terminal of stretch circuit couples the output terminal of upper limit comparison module, Output terminal couples the input terminal of trigger circuit, the output terminal of the input terminal coupling lower limit comparison module of pulse bandwidth filtering circuit, output The input terminal of end coupling trigger circuit.Voltage fault signal detection circuit uses the U41 chips comprising dual comparator.Due to voltage The sampled voltage signal of fault-signal detection circuit U41 inputs is by the pulse signal after the rectified partial pressure of alternating current, when the signal During more than upper limit threshold, that is, there is overvoltage failure, the output terminal Out_a outputs of voltage fault signal detection circuit U41 are Characterize the pulse signal of overvoltage, it is therefore necessary to false voltage pulse signal be widened into high level signal by stretch circuit After export give logic control element 4 carry out over-voltage fault analysis.Conversely, under normal voltage, voltage fault signal detection circuit The output terminal Out_b outputs of U41 are the pulse signals for characterizing normal voltage, which must pass through pulse bandwidth filtering circuit It filters out, when the signal is more than lower threshold, that is, under-voltage failure, the output of voltage fault signal detection circuit U41 occurs Hold the high level signal of Out_b outputs.Here diode D41 and diode D45 constitutes OR circuit, and voltage bound is exceeded When two fault-signals exporting the Vina+ pins of trigger circuit U40 are input to by OR circuit, such upper limit, lower limit surpass Mark can all export fault-signal and carry out voltage failure analysis to logic control element 4.Control signal deteching circuit coupling triggering electricity The Vinb+ pins of road U40 when interface J40 has control signal input, will be exported after control signal to logic control element 4 It is made whether the analysis of control signal.

As shown in fig. 6, logic control element 4 includes logic control chip U50 and its peripheral circuit, peripheral circuit mainly wraps Include diode D51~D52, capacitance C50~C51, resistance R50~R51 and light emitting diode L50.Logic control chip U50 exists Power supply under normal operating conditions is powered simultaneously by power supply and voltage sampling unit 1 and power supply unit 2, under micro energy lose state, Power supply unit 2 is closed, and only maintains the work under the micro energy lose state of logic control element 4 by power supply and voltage sampling unit 1 Make electric current.Two current supply circuits are isolated respectively by diode D50 and diode D51.Capacitance C50 is storage capacitor, makes to patrol Volume control unit 4 from micro energy lose state switch to normal operating conditions when, due to the increase of operating current, be unlikely in power circuit Before 22 open, logic control element 4 is caused to be stopped, the capacity of the storage capacitor will be according to the work of logic control element 4 The opening time of electric current and power circuit 22 determines, in the present embodiment, employs the electrolytic capacitor of 470uf/10v.Resistance The condition indication circuit of R51 and light emitting diode L50 composition logic control elements 4.

As shown in fig. 7, position detection unit 5 include Hall sensor JP60, Hall sensor JP61 and resistance R60~ R61, Hall sensor JP60 and Hall sensor JP61 are used for detection switch division operating position, and resistance R60~R61 is for defeated Enter the protection of signal.

As shown in figure 8, motor control unit 6 includes motor-drive circuit, motor driving and braking circuit and motor, electricity The input terminal couples logic control unit 4 of drive circuit exports, output terminal coupling motor, motor driving and braking circuit it is defeated Enter to hold the output of couples logic control unit 4, output terminal coupling motor.Motor-drive circuit includes field-effect tube Q62 for electricity The start-up and shut-down control of machine, M_CONA are motor drive signal, electric motor starting during M_CONA input high levels, M_CONA input low levels When motor stop.Motor drives and braking circuit includes transistor Q60, field-effect tube Q61 and resistance R62~R64, SC_CON For brake signal, whens SC_CON input low levels, starts brake function, and whens SC_CON input high levels closes brake function, M_ CONA and SC_CON is exported by logic control element 4, and the level change of two signals has sequencing, when starting motor, control End SC_CON must first export high level, and transistor Q60 is connected, and the grid of such field-effect tube Q61 is placed in low level and cuts Only, brake function is closed, then exports high level to M_CONA again, field-effect tube Q62 is connected, opens motor.Otherwise it closes When closing motor, M_CONA first exports low level, and field-effect tube Q62 ends, and then SC_CON exports low level again, starts brake work( Can, motor can be made quickly to stop in this way.Have the advantages that circuit is simple, at low cost, control function is good using the circuit.

The course of work of the present embodiment is as follows：After reclosing switchs normal power supply, believe in no voltage failure and control In the case of number input, reclosing switch enters micro energy lose working condition after of short duration delay, if there is supply voltage failure, then By triggering wake-up signal wakeup logic control unit 4, into normal operating conditions, monitor false voltage at any time at this time and do phase The processing action answered, after voltage is restored to normal voltage, reenters micro energy lose working condition.Equally have control signal it is defeated Fashionable wakeup logic control unit 4, switch enter normal operating conditions, are performed simultaneously corresponding control action, execution Afterwards, micro energy lose working condition is entered immediately, to realize best energy-saving effect.

The utility model makes switchette have pole in normal state by the micro energy lose Functional Design to switching circuit Low power consumption, the static working current of complete machine are less than 0.2mA, are calculated by rated voltage 220V, the quiescent dissipation of complete machine is 0.044 Watt, often degree electric energy (1kwh) is for switching work 2 years half in this way, so if all switchettes are using the utility model Circuit design will bring immeasurable economic benefit and social benefit to the whole society.

Particular embodiments described above has carried out into one the purpose of this utility model, technical solution and advantageous effect The detailed description of step, it should be understood that the foregoing is merely specific embodiment of the utility model, are not used to limit this reality With novel protection domain.Particularly point out, to those skilled in the art, it is all the spirit and principles of the utility model it Any modification, equivalent substitution, improvement and etc. that are interior, being done, should be included within the scope of protection of this utility model.

Claims (9)

1. a kind of reclosing switch, which is characterized in that including detection control unit, logic control element, position detection unit with And motor control unit；

Detection control unit, for signal to be controlled to input；

Logic control element couples the detection control unit and the motor control unit, when receiving a control signal, control It makes the motor control unit and performs corresponding actions；

The motor control unit includes motor and motor driving and braking circuit, the motor driving and the input of braking circuit End couples the logic control element, and output terminal couples the motor, for driving/brake of response logic control unit output Signal control motor startup/stopping；

Position detection unit couples the logic control element and the motor control unit, for detecting motor control unit Action response whether in place generate driving/brake signal.

2. reclosing switch according to claim 1, which is characterized in that further include power supply and voltage sampling unit and power supply Unit；

Alternating current is converted into the direct current that reclosing switch uses, and to supplying by power supply and voltage sampling unit, external alternating current Electric unit carries out voltage sample, generates sampled voltage signal；

Power supply unit, coupling power supply and voltage sampling unit receive the direct current of power supply and voltage sampling unit unit, and will be straight Galvanic electricity is converted into the electricity consumption for reclosing switch normal operating conditions；

Detection control unit further includes voltage fault signal detection circuit, and the input terminal coupling of voltage fault signal detection circuit supplies Electricity and voltage sampling unit, output terminal couples logic control unit, for by sampled voltage signal respectively with upper limit threshold and under Limit threshold value is compared, and overvoltage/under-voltage fault signal is generated according to comparison result；

Logic control element coupling power supply and voltage sampling unit, voltage fault signal detection circuit and power supply unit, when not having When detecting the input of control signal and overvoltage/under-voltage fault signal, then reclosing switch closes power supply unit power supply, into a subtle way Power consumption state.

3. reclosing switch according to claim 2, which is characterized in that the power supply unit includes power switch control electricity Road and power circuit；

Power on-off control circuit couples the power supply and voltage sampling unit, logic control element and power circuit, receives And the power control signal controlling power circuit and logic control element for responding DC power supply and logic control element normally start；

Power circuit couples the logic control element, provides the electricity consumption of logic control element in normal operation.

4. reclosing switch according to claim 3, which is characterized in that the power on-off control circuit is opened including first Close module and second switch module；

First switch module couples the power supply and voltage sampling unit and power circuit, passes through the conducting of first switch module Or shutdown control power supply and voltage sampling unit are powered to power circuit；

Second switch module couples the logic control element, the power control signal nucleus formation of response logic control unit In the switch control signal of first switch module, first switch module responds the switch control signal on or off.

5. reclosing switch according to claim 4, which is characterized in that the first switch module includes first switch pipe With first switch control submodule, the grid of first switch pipe couples the first switch control submodule, drains described in coupling Power supply and voltage sampling unit and first switch control submodule, source electrode couple the power circuit, first switch control submodule Block is used to provide the grid voltage of first switch pipe；

The second switch module includes second switch pipe and second switch control submodule, the grid coupling institute of second switch pipe Second switch control submodule is stated, drain electrode couples the first switch control submodule, source electrode coupling second switch control submodule Block and ground connection, second switch control submodule couples logic control unit and power supply and voltage sampling unit, for power source-responsive It controls signal and generates the grid voltage for being used for second switch pipe.

6. reclosing switch according to claim 5, which is characterized in that the second switch control submodule includes first Divider resistance, the second divider resistance, capacitance, voltage-stabiliser tube and transistor, one end of first divider resistance couple the confession Electricity and voltage sampling unit, the other end couple one end of the second divider resistance, the other end coupling transistors of the second divider resistance Collector, the emitter ground connection of transistor, base stage couples the logic control element, the first divider resistance and the second partial pressure electricity The connecting node of resistance is respectively coupled to the grid of one end of capacitance, the cathode of voltage-stabiliser tube and second switch pipe, the other end of capacitance Ground connection, the plus earth of voltage-stabiliser tube.

7. reclosing switch according to claim 2, which is characterized in that the power supply and voltage sampling unit include decompression Voltage stabilizing module, for providing operating current during micro energy lose state for reclosing switch.

8. reclosing switch according to claim 3, which is characterized in that the power circuit includes transformer, domination set Into circuit, voltage-regulating circuit and serial regulating circuit and the input terminal of control integrated circuit, the primary side coupling electricity of transformer Source switch control circuit, the input terminal of the secondary coupling serial regulating circuit of transformer, the output terminal coupling of serial regulating circuit Logic control element controls the output terminal of integrated circuit to couple voltage-regulating circuit, and voltage-regulating circuit is also coupled to series voltage stabilizing The input terminal of circuit.

9. reclosing switch according to claim 8, which is characterized in that the power circuit includes negative peak clamp circuit, The output terminal of the input terminal coupling power on-off control circuit of negative peak clamp circuit, the primary side of output terminal coupling transformer and control The input terminal of integrated circuit.