CN105655980B - A kind of protection control circuit of electric extinguisher - Google Patents
A kind of protection control circuit of electric extinguisher Download PDFInfo
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- CN105655980B CN105655980B CN201610166860.1A CN201610166860A CN105655980B CN 105655980 B CN105655980 B CN 105655980B CN 201610166860 A CN201610166860 A CN 201610166860A CN 105655980 B CN105655980 B CN 105655980B
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- control circuit
- fine motion
- controlling switch
- triode
- motor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/085—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load
Abstract
The invention discloses a kind of protection control circuit of electric extinguisher, it includes DC DC reduction voltage circuits, 555 delay control circuits, P metal-oxide-semiconductor control circuits, first N metal-oxide-semiconductor control circuits, 2nd N metal-oxide-semiconductors control circuit and overcurrent turn-off function circuit, the input connection power supply of the DC DC reduction voltage circuits, output end is sequentially connected 555 delay control circuits and P metal-oxide-semiconductor control circuits, the normal phase input end of the output end connection motor of P metal-oxide-semiconductor control circuits, the first N metal-oxide-semiconductors control circuit normal phase input end with motor respectively, fine motion controlling switch S1 and overcurrent turn-off function circuit are connected, the 2nd N metal-oxide-semiconductors control circuit inverting input with motor respectively, fine motion controlling switch S2 and overcurrent turn-off function circuit are connected.When the present invention can prevent that motor operation is not in place, situation that motor continuous service is burnt out；And microswitch can be avoided to be squeezed bad situation.
Description
Technical field
The present invention relates to a kind of protection control circuit of electric extinguisher, belongs to the flame-out control technology field of automotive vehicle.
Background technology
With the development of auto industry, application of the electronic product on automobile is more and more extensive, controls automobile flameout now
Method also by it is initial it is flame-out manually become electronic flame-out, be broadly divided into electromagnetic type and the class of electric motor type two, wherein motor
The operation principle of formula is：When ignition lock is in ON shelves, motor is rotated forward until change-over switch is disconnected, when ignition lock is in OFF shelves
Motor reversal is until close change-over switch.Seem perfect process and but keep hidden danger：One, change-over switch is not dynamic during motor rotation blockage
Make, so as to which motor can work always, certainly will so cause motor to burn out；Two；Switch carrying electric current, cause the oxygen of switch contact
Change, adhesion；Three, from stopping at once when the inertia of direct current generator prevents it encounter change-over switch, change-over switch can be squeezed at leisure
It is bad.Three cases above is the three big main causes for causing controller to fail at present.
The content of the invention
The defects of in order to overcome above-mentioned prior art to exist, the invention provides a kind of protection of electric extinguisher to control electricity
Road.
The present invention adopts the technical scheme that：A kind of protection control circuit of electric extinguisher, it includes DC-DC decompression electricity
Road, 555 delay control circuits, P-MOS pipes control circuit, the first N-MOS pipes control circuit, the 2nd N-MOS pipes control circuit and
Overcurrent turn-off function circuit, the input connection power supply of the DC-DC reduction voltage circuits, output end are sequentially connected 555 delay control circuits
With P-MOS pipe control circuits, the normal phase input end of the output end connection motor of P-MOS pipe control circuits, the first N-MOS pipes
The normal phase input end with motor, fine motion controlling switch S1 and overcurrent turn-off function circuit are connected control circuit respectively, the 2nd N-
The metal-oxide-semiconductor control circuit inverting input with motor respectively, fine motion controlling switch S2 and overcurrent turn-off function circuit are connected, described micro-
Dynamic controlling switch S1 and S2 movable contact are connected to power supply, and fine motion controlling switch S1 the first stationary contact is controlled with 555 delays respectively
The output end and P-MOS management and control circuit input ends of circuit processed are connected, fine motion controlling switch S1 the second stationary contact and first
N-MOS management and control circuit input end connects.
Further, 555 delay control circuit includes delay circuit and shut-off delay circuit, the delay circuit bag
555 delay chips are included, the shut-off delay circuit includes N-type triode Q4, and is connected to the resistance of triode Q4 base stages
R11, R12 and electric capacity C2, the resistance R12 and electric capacity C2 are parallel with one another, and the resistance R12 after parallel connection connects three with electric capacity C2 one end
Pole pipe Q4 base stages, other end connecting triode Q4 emitter stages are simultaneously grounded, and the colelctor electrode of the triode Q4 connects 555 delay chips
Threshold values end.
Further, P-MOS pipes control circuit, the first N-MOS pipes control circuit and the 2nd N-MOS pipe control circuits
Form metal-oxide-semiconductor H-bridge drive circuit.
Further, the P-MOS pipes control circuit includes p-type FET Q8, the FET Q8 grid company
Connect the instantaneous turning circuits of Q8, source electrode connects the normal phase input end of motor, the Q8 winks by diode D10 connections power supply, drain electrode
When turning circuit including NPN type triode Q13, the triode Q13 colelctor electrode pass through the resistance R7 and electric capacity that are serially connected
C7 is connected to FET Q8 grid, triode Q13 base stage pass through the resistance R19 connections fine motion controlling switch S1
One stationary contact, parallel resistance R9 and electric capacity C4 between triode Q13 emitter stage and base stage.
Further, the first N-MOS pipes control circuit includes N-type FET Q6, the grid of the FET Q6
Connection Q6 instantaneous turning circuits in pole are simultaneously also connected to fine motion controlling switch S1 the second stationary contact, Q6 drain electrode by resistance R8
The normal phase input end of motor is connected, the instantaneous turning circuits of Q6 include electric capacity C8 parallel with one another, resistance R13 and NPN type three
Pole pipe Q12, triode Q12 base stage are connected to fine motion controlling switch S1 the first stationary contact by resistance R21.
Further, the 2nd N-MOS pipes control circuit includes N-type FET Q7, the FET Q7
Drain electrode connection motor inverting input, Q7 grid connects fine motion controlling switch S1 movable contact and described 555 and prolongs respectively
When control circuit output end, be provided with NPN type triode Q5 between Q7 source electrode and grid, triode Q5 colelctor electrode connection field
Effect pipe Q7 grid, Q5 emitter stage connection fine motion controlling switch S2 the first stationary contact.
Further, the fine motion controlling switch S1 is closed type single-pole double-throw switch (SPDT), its movable contact and the second stationary contact
In normally off；The fine motion controlling switch S2 is open type single-pole double-throw switch (SPDT).
The beneficial effects of the invention are as follows：
（One）Utilize metal-oxide-semiconductor H-bridge circuit controlled motor rotating；Once trigger limit switch motor immediately to stop.
（Two）If motor operation 10s does not trigger limit switch, the control circuit can be forced shutdown motor.
（Three）Motor working current is not walked from switch, is only walked control signal, is avoided the adhesion of switch contact.
（Four）When triggering any side microswitch in both ends, the backward voltage for having a 20ms duration at once applies
On motor coil, motor is stopped immediately, protect microswitch not to be squeezed bad.
（Five）When motor rotation blockage, the delay circuit controlled motor working time is 10s, then can automatic cut-off motor electricity
Source, thereby protect motor and be not burned.
Brief description of the drawings
Fig. 1 is the theory diagram of the present invention.
Fig. 2 is DC-DC reduction voltage circuit figures.
Fig. 3 is 555 delay circuit figures.
Fig. 4 is 555 shut-off delay circuit figures.
Fig. 5 is P-MOS pipe electric operation control circuit figures.
Fig. 6 is the first N-MOS pipe electric operation control circuit figures.
Fig. 7 is the 2nd N-MOS pipe electric operation control circuit figures.
Fig. 8 is the instantaneous turning circuit figures of Q8.
Fig. 9 is the instantaneous turning circuit figures of Q6.
Figure 10 integrated circuit connection figures.
Embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of protection control circuit of electric extinguisher, it includes DC-DC reduction voltage circuits, 555 delays time to control
Circuit, P-MOS pipes control circuit, the first N-MOS pipes control circuit, the 2nd N-MOS pipes control circuit and overcurrent turn-off function circuit, institute
The input connection power supply of DC-DC reduction voltage circuits is stated, output end is sequentially connected 555 delay control circuits and P-MOS management and control systems electricity
Road, P-MOS pipe control circuits output end connection motor normal phase input end, the first N-MOS pipes control circuit respectively and
Normal phase input end, fine motion controlling switch S1 and the overcurrent turn-off function circuit of motor are connected, the 2nd N-MOS pipes control circuit point
Not and motor inverting input, fine motion controlling switch S2 and overcurrent turn-off function circuit be connected, the fine motion controlling switch S1 with
S2 movable contact is connected to power supply, fine motion controlling switch S1 the first stationary contact output end with 555 delay control circuits respectively
And P-MOS management and control circuit input ends are connected, fine motion controlling switch S1 the second stationary contact and the first N-MOS pipe control circuits
Input connects.
As shown in Figure 3 and Figure 4,555 delay control circuit includes delay circuit and shut-off delay circuit, the delay
Circuit includes 555 delay chips, and the shut-off delay circuit includes N-type triode Q4, and is connected to triode Q4 base stages
Resistance R11, R12 and electric capacity C2, the resistance R12 and electric capacity C2 are parallel with one another, and the resistance R12 and electric capacity C2 one end after parallel connection connect
Triode Q4 base stages are connect, other end connecting triode Q4 emitter stages are simultaneously grounded, the delay of colelctor electrode connection 555 of the triode Q4
The threshold values end of chip.
As shown in Figure 5 and Figure 8, the P-MOS pipes control circuit includes p-type FET Q8, the FET Q8's
The instantaneous turning circuits of grid connection Q8, source electrode connect the normal phase input end of motor, institute by diode D10 connections power supply, drain electrode
State the colelctor electrodes of instantaneous turning circuits of Q8 including NPN type triode Q13, the triode Q13 and pass through the resistance R7 that is serially connected
FET Q8 grid is connected to electric capacity C7, triode Q13 base stage passes through the resistance R19 connections fine motion controlling switch
S1 the first stationary contact, parallel resistance R9 and electric capacity C4 between triode Q13 emitter stage and base stage.
As shown in Fig. 6 and Fig. 9, the first N-MOS pipes control circuit includes N-type FET Q6, the FET
The Q6 instantaneous turning circuits of grid connection Q6 are simultaneously also connected to fine motion controlling switch S1 the second stationary contact, Q6 by resistance R8
Drain electrode connection motor normal phase input end, the instantaneous turning circuits of Q6 include electric capacity C8 parallel with one another, resistance R13 and
NPN type triode Q12, triode Q12 base stage are connected to fine motion controlling switch S1 the first stationary contact by resistance R21.
As shown in fig. 7, the 2nd N-MOS pipes control circuit includes N-type FET Q7, the FET Q7
Drain electrode connection motor inverting input, Q7 grid connects fine motion controlling switch S1 movable contact and described 555 and prolongs respectively
When control circuit output end, be provided with NPN type triode Q5 between Q7 source electrode and grid, triode Q5 colelctor electrode connection field
Effect pipe Q7 grid, Q5 emitter stage connection fine motion controlling switch S2 the first stationary contact.
Definition in the present invention to each node is：VCC:It is directly connected to storage battery positive terminal（DC24V）；ON:Ignition lock is opened
Close（There is electricity during startup, powered off when flame-out）.When VCC and ON has electricity simultaneously, electric current edge（D2, MG1, Q6, ground）Direction is flowed, definition
For motor reversal.When VCC has an electricity, during ON out of power, electric current edge（D10, Q8, MG1, Q7, ground）Direction is flowed, and is defined as motor rotating forward.
The operation principle of the present invention is as follows：
（1）24V battery voltage exports DC8V voltages to 555 delay circuits after DC-DC is depressured by Q1 emitter stages.
（2）During ON out of power, C3 charges through R3, before (2/3) * 8V are not charged to, the output end of 555 chips（That is Q pin）It is defeated
Go out high level, the STOP ends output 24V high level in Fig. 5, then Q8 turn on, R10 driving Q7 conductings, switch S1 the second stationary contact
Low level, Q6 cut-offs, motor rotate forward.
（3）When described（2）When step touches normally opened microswitch S2, Q7 grids are pulled low, Q7 cut-offs, Q10 current collection
Pole goes out 24V high level, Q8 cut-offs.Q6 grids are because the RC circuit that C9/R4 is combined into makes Q6 grid obtain a 20ms
The high level of duration, the high level turn on Q6, and MG1 forms a current loop opposite with original motor electric current traffic direction
（Former high-voltage point is over the ground）, stop direct current generator moment, it is bad so as to protect fine motion controlling switch S2 not to be squeezed.
（4）When described（2）Step now treats 555 TH pipes because when motor rotation blockage is without touching microswitch S2
When foot level voltage is charged to (2/3) * 8V through C3 through R3 (10s durations), 555 Q pin output low level, the STOP ends in Fig. 5
Go out low level, then Q7 ends, and Q10 colelctor electrodes go out 24V high level, Q8 cut-offs, motor power-off.So as to play the work of protection motor
With.
（5）When ON has electricity, Q4 conductings, 555 TH pins are maintained low level always, and 555 Q pin exports always
Low level, the STOP in Fig. 5 is low level, then Q10 colelctor electrode goes out high level, and the high level ends Q8.Because ON has electricity,
Q5 makes Q7 gate-source potential consistent, then Q7 ends.Because ON has electricity, then the stationary contacts of fine motion controlling switch S1 second are high electricity
Flat, then Q6 is turned on, motor reversal.
（6）Motor presses step（5）The operation triggers microswitch S1 and is allowed to the conducting of the first stationary contact, the second stationary contact
Disconnecting, then Q2 makes Q6 end rapidly, and turns on Q13, and Q8 grids obtain the low level of a 20ms duration, and Q8 is turned on,
One, end of motor MG1 original low potentials high level is applied to, motor stops rapidly, protects microswitch S1 not to be squeezed bad.
The basic principles, principal features and advantages of the present invention have been shown and described above.One of ordinary skill in the art
It should be appreciated that above-described embodiment protection domain that the invention is not limited in any way, all to be obtained using modes such as equivalent substitutions
The technical scheme obtained, falls within protection scope of the present invention.Part that the present invention does not relate to is same as the prior art or can adopt
Realized with prior art.
Claims (6)
- A kind of 1. protection control circuit of electric extinguisher, it is characterised in that：Including DC-DC reduction voltage circuits, 555 delays time to control electricity Road, P-MOS pipes control circuit, the first N-MOS pipes control circuit, the 2nd N-MOS pipes control circuit and overcurrent turn-off function circuit, it is described The input connection power supply of DC-DC reduction voltage circuits, output end are sequentially connected 555 delay control circuits and P-MOS pipe control circuits, The normal phase input end of the output end connection motor of P-MOS pipe control circuits, the first N-MOS pipes control circuit is respectively and motor Normal phase input end, fine motion controlling switch S1 and overcurrent turn-off function circuit be connected, the 2nd N-MOS pipes control circuit respectively and The inverting input of motor, fine motion controlling switch S2 and overcurrent turn-off function circuit are connected, fine motion the controlling switch S1's and S2 Movable contact is connected to power supply, fine motion controlling switch S1 the first stationary contact respectively with the output ends of 555 delay control circuits and P-MOS management and control circuit input ends are connected, and fine motion controlling switch S1 the second stationary contact and the first N-MOS pipes control circuit input End connection；The P-MOS pipes control circuit includes p-type FET Q8, the FET Q8 grid connection instantaneous electric conductions of Q8 Road, source electrode connect the normal phase input end of motor by diode D10 connections power supply, drain electrode, and the instantaneous turning circuits of Q8 include NPN type triode Q13, the triode Q13 colelctor electrode are connected to field-effect by the resistance R7 and electric capacity C7 being serially connected Pipe Q8 grid, triode Q13 base stage pass through the resistance R19 connections fine motion controlling switch S1 the first stationary contact, three poles Parallel resistance R9 and electric capacity C4 between pipe Q13 emitter stage and base stage.
- A kind of 2. protection control circuit of electric extinguisher according to claim 1, it is characterised in that：The 555 delay control Circuit processed includes delay circuit and shut-off delay circuit, and the delay circuit includes 555 delay chips, the shut-off delay circuit Including N-type triode Q4, and it is connected to the resistance R11, R12 and electric capacity C2, the resistance R12 and electric capacity of triode Q4 base stages C2 is parallel with one another, resistance R12 and electric capacity C2 one end connecting triode Q4 base stages after parallel connection, other end connecting triode Q4 transmittings Pole is simultaneously grounded, and the colelctor electrode of the triode Q4 connects the threshold values end of 555 delay chips.
- A kind of 3. protection control circuit of electric extinguisher according to claim 1, it is characterised in that：The P-MOS management and control Circuit, the first N-MOS pipes control circuit and the 2nd N-MOS pipes control circuit processed form metal-oxide-semiconductor H-bridge drive circuit.
- A kind of 4. protection control circuit of electric extinguisher according to claim 1 or 3, it is characterised in that：First N- Metal-oxide-semiconductor control circuit includes N-type FET Q6, the FET the Q6 instantaneous turning circuits of grid connection Q6 and also led to Cross the second stationary contact that resistance R8 is connected to fine motion controlling switch S1, the positive input of FET Q6 drain electrode connection motor End, the instantaneous turning circuits of Q6 include electric capacity C8 parallel with one another, resistance R13 and NPN type triode Q12, triode Q12's Base stage is connected to fine motion controlling switch S1 the first stationary contact by resistance R21.
- A kind of 5. protection control circuit of electric extinguisher according to claim 1 or 3, it is characterised in that：2nd N- Metal-oxide-semiconductor control circuit includes the inverting input of N-type FET Q7, the FET Q7 drain electrode connection motor, field effect Should pipe Q7 grid connect fine motion controlling switch S1 movable contact and the output end of 555 delay control circuit respectively, field effect NPN type triode Q5 should be provided between pipe Q7 source electrode and grid, triode Q5 colelctor electrode connects FET Q7 grid, Triode Q5 emitter stage connection fine motion controlling switch S2 the first stationary contact.
- A kind of 6. protection control circuit of electric extinguisher according to any one of claims 1 to 3, it is characterised in that：It is described Fine motion controlling switch S1 is closed type single-pole double-throw switch (SPDT), and its movable contact and the second stationary contact are in normally off；The fine motion Controlling switch S2 is open type single-pole double-throw switch (SPDT).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610166860.1A CN105655980B (en) | 2016-03-23 | 2016-03-23 | A kind of protection control circuit of electric extinguisher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610166860.1A CN105655980B (en) | 2016-03-23 | 2016-03-23 | A kind of protection control circuit of electric extinguisher |
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| Publication Number | Publication Date |
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| CN105655980A CN105655980A (en) | 2016-06-08 |
| CN105655980B true CN105655980B (en) | 2018-01-19 |
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| CN201610166860.1A Active CN105655980B (en) | 2016-03-23 | 2016-03-23 | A kind of protection control circuit of electric extinguisher |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106523764B (en) * | 2016-12-20 | 2019-06-21 | 中国科学院光电研究院 | A kind of control device of exhaust valve |
| CN113612427A (en) * | 2021-07-30 | 2021-11-05 | 北京曙光航空电气有限责任公司 | Linear actuator control circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1320740C (en) * | 2004-04-09 | 2007-06-06 | 圆创科技股份有限公司 | Motor controlling circuit with controllable driven current supply |
| US8067859B2 (en) * | 2008-12-11 | 2011-11-29 | Infineon Technologies Ag | Reverse polarity protection for MOSFETs |
| CN103758644B (en) * | 2014-02-17 | 2016-03-09 | 科博达技术有限公司 | The electric controller of engine misses device and controlling method thereof |
| CN103982306B (en) * | 2014-04-08 | 2016-06-08 | 潍柴动力股份有限公司 | The flame-out device of the electricity of diesel engine and circuit card Controlling System, method |
| CN104467559A (en) * | 2014-12-11 | 2015-03-25 | 惠州市蓝微电子有限公司 | Brushless motor H-bridge drive circuit |
| CN205453098U (en) * | 2016-03-23 | 2016-08-10 | 南京双环电器股份有限公司 | Protection control circuit of electricity extinguisher |
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2016
- 2016-03-23 CN CN201610166860.1A patent/CN105655980B/en active Active
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| CN105655980A (en) | 2016-06-08 |
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Denomination of invention: Protection control circuit of electric extinguisher Effective date of registration: 20181212 Granted publication date: 20180119 Pledgee: Bank of Nanjing, Zhujiang branch, Limited by Share Ltd Pledgor: NANJING SHUANGHUAN ELECTRIC APPLIANCE CO., LTD. Registration number: 2017990000884 |