CN103342114B - A kind of control system of rearview mirror folder - Google Patents
A kind of control system of rearview mirror folder Download PDFInfo
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- CN103342114B CN103342114B CN201310291808.5A CN201310291808A CN103342114B CN 103342114 B CN103342114 B CN 103342114B CN 201310291808 A CN201310291808 A CN 201310291808A CN 103342114 B CN103342114 B CN 103342114B
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Abstract
The invention provides a kind of control system of rearview mirror folder, it comprises back mirror, butting section, control setup, described control setup comprises motor, is connected to two control modules of motor, and described two control modules access forward received current respectively and reverse received current makes motor rotate forward and contrarotation; Each control module described comprises current lead-through module, current cut-off module and sampling module, received current inputs to motor by current lead-through module and motor is rotated thus drives back mirror to rotate to butting section, and back mirror rotates to butting section post-sampling module samples circuit voltage and makes current cut-off module work motor be stopped the rotation the current cut-off inputing to motor.
Description
Technical field
The present invention relates to technical field of automobile control, particularly relate to a kind of control system of rearview mirror folder.
Background technology
In prior art, the back mirror of automobile is used for the vehicle that chaufeur observes rear, but back mirror is arranged on automobile two side position, when vehicle travels in narrower locus or the more complicated occasion of pedestrian, in order to not make back mirror and other vehicles, pedestrian collide, back mirror can only be folded up by chaufeur.
Existing back mirror folding device, such as publication number is the Chinese patent " folding device for automobile rearview mirror " of CN202656933U, and it comprises an anchor fitting, a transmission device, a motor and a rotating mechanism.Motor, transmission device and rotating mechanism are all installed on anchor fitting, rotating mechanism comprises a center stand column, one elastic element, elastic element is placed in this center stand column, this rotating mechanism comprises a stage clip circle further, and its centering column one end also compresses this elastic element, and this stage clip circle comprises a circle body and multiple compressing tablet, the plurality of compressing tablet is arranged along circle body inner ring interval, and the circle diameter tangent with the summit of the plurality of compressing tablet is less than the diameter of this center stand column column cap.This back mirror folding device does not have overvoltage protection in folding process, does not know when to fold and puts in place.
And for example publication number is the Chinese patent " a kind of overload protection device for folding mechanism of rearview mirror " of CN201405784Y; it passes through excess voltage protection; current-limiting protection circuit, several circuit module such as suppression circuit, work drive motor etc. make can stop in time when there is stall in back mirror folding process, avoid back mirror impaired.But this protective circuit mode of operation is simple, and when the circuit of this patent after circuit disconnection does not stop the setting of circuit conducting again, circuit may be made again to start, and motor operates again.
Summary of the invention
Technical matters to be solved by this invention is, for the above-mentioned deficiency of prior art, proposes the control system of rearview mirror folder of a kind of fast response time, part long service life.
The technical scheme that the present invention solves the employing of its technical matters is, a kind of control system of rearview mirror folder is proposed, it comprises back mirror, butting section, control setup, described control setup comprises motor, is connected to two control modules of motor, and described two control modules access forward received current respectively and reverse received current makes motor rotate forward and contrarotation; Each control module described comprises current lead-through module, current cut-off module and sampling module, received current inputs to motor by current lead-through module and motor is rotated thus drives back mirror to rotate to butting section, and back mirror rotates to butting section post-sampling module samples circuit voltage and makes current cut-off module work motor be stopped the rotation the current cut-off inputing to motor.
Further, described conduction module comprises the first zener diode, the first conducting metal-oxide-semiconductor, the second conducting metal-oxide-semiconductor and contact resistance; Described current cut-off module comprises the second zener diode, the first aerotron, the second aerotron; Described sampling module comprises two resistance in parallel; Flow through the first zener diode after the input of described forward received current to make the first conducting metal-oxide-semiconductor conducting flow through contact resistance to make the second conducting metal-oxide-semiconductor conducting and drive motor rotates simultaneously, back mirror rotates to butting section rear motor electric current and increases, the voltage between two in parallel resistance increase make the first triode ON, the second conducting metal-oxide-semiconductor end and makes that the second zener diode ends, the second aerotron collection emitter-base bandgap grading conducting makes the second conducting metal-oxide-semiconductor remain on off condition.
Further, described first zener diode positive pole is connected to forward input power, negative pole is connected to the first conducting metal-oxide-semiconductor grid, first conducting metal-oxide-semiconductor source electrode is connected to motor positive pole, drain electrode is connected to sampling resistor module, and contact resistance one end is connected to the first zener diode negative pole other end and is connected to the second zener diode negative pole; Described second zener diode positive pole is connected to reverse input power, negative pole is connected to the second conducting metal-oxide-semiconductor grid, second conducting metal-oxide-semiconductor source electrode is connected to motor positive pole, drain electrode is connected to sampling resistor module, and the first transistor base is connected to sampling resistor module, collecting electrode is connected to the second zener diode negative pole, emitter is connected to the second zener diode positive pole; Described second transistor base and emitter are all connected to the second conducting metal-oxide-semiconductor drain electrode, and collecting electrode is connected to the second conducting metal-oxide-semiconductor base stage.
Further, described sampling resistor module is made up of two shunt resistances.
Further, multiple filter capacitor and current-limiting resistance is also comprised in described control module.
Equal energy cut off in time when the present invention makes back mirror be folded to butting section along different directions by arranging two-way control module, make back mirror folding control system fast response time of the present invention by physical circuit design simultaneously, again can not start because of foeign element after circuit cut-off, safety performance strengthens greatly.
Accompanying drawing explanation
Fig. 1 is the control principle block diagram of control system of rearview mirror folder in a preferred embodiment of the present invention;
Fig. 2 is the circuit diagram of control system of rearview mirror folder in a preferred embodiment of the present invention.
Detailed description of the invention
Please refer to Fig. 1, Fig. 1 is the control principle block diagram of control system of rearview mirror folder in a preferred embodiment of the present invention.In Fig. 1, the control module of control system of rearview mirror folder comprises motor 10, is connected to two control modules 20,21 of motor, and described two control modules access forward received current respectively and reverse received current makes motor 10 rotate forward and contrarotation; Each control module described comprises current lead-through module 201, current cut-off module 202 and sampling module 203, received current inputs to motor 10 by current lead-through module 201 and motor is rotated thus drives back mirror to rotate to butting section, and back mirror rotates to butting section post-sampling module 203 sample circuit voltage and current cut-off module 202 is worked and motor stopped the rotation the current cut-off inputing to motor 10.
In the present embodiment, after back mirror is rotated in place, then automatically cuts rotation circuit after namely rotating to butting section and make motor stalls.When back mirror be not rotated in place but by other objects are stuck cause motor rotation blockage time, circuit still can disconnect automatically, therefore back mirror is rotated in place circuit and motor rotation blockage cut off synthesizes a circuit by rearview mirror control system of the present invention, without the need to being rotated in place on circuit newly-increased motor rotation blockage cut off at existing back mirror or newly-increased back mirror is rotated in place circuit on existing motor rotation blockage cut off.
Preferably, conduction module 201 comprises the first zener diode D1, the first conducting metal-oxide-semiconductor Q1, the second conducting metal-oxide-semiconductor Q2 and contact resistance R1; Current cut-off module 202 comprises the second zener diode D2, the first aerotron B1, the second aerotron B2; Sampling module 203 comprises two resistance R2 in parallel; Flow through the first zener diode D1 after the input of described forward received current to make the first conducting metal-oxide-semiconductor Q1 conducting flow through contact resistance R1 to make the second conducting metal-oxide-semiconductor Q2 conducting and drive motor 10 rotates simultaneously, back mirror rotates to butting section rear motor 10 electric current and increases, the voltage between two in parallel resistance R2 increase make the first aerotron B1 conducting, the second conducting metal-oxide-semiconductor Q2 end and make the second zener diode D2 cut-off, the second aerotron B2 collection emitter-base bandgap grading conducting makes the second conducting metal-oxide-semiconductor Q2 remain on off condition.
In the present embodiment, the second conducting metal-oxide-semiconductor Q2 has increased the second aerotron B2 newly, and coordinate with other elements of circuit the second conducting metal-oxide-semiconductor Q2 is ended after again can not get back to conducting state, electric current reduce zero, motor shuts down.
More preferably, please refer to Fig. 2, Fig. 2 is the circuit diagram of control system of rearview mirror folder in a preferred embodiment of the present invention.Only describe forward received current in description below and flow through the circuit current direction of circuit turn-on and electric machine rotation are put in place current direction that rear motor stops operating.When reverse received current flows through circuit, the like at once, do not repeat at this.
In Fig. 2, first zener diode D1 positive pole is connected to forward input power, negative pole is connected to the first conducting metal-oxide-semiconductor Q1 grid, first conducting metal-oxide-semiconductor Q1 source electrode is connected to motor 10 positive pole, drain electrode is connected to sampling resistor module, and contact resistance R1 one end is connected to the first zener diode D1 negative pole other end and is connected to the second zener diode D2 negative pole; Described second zener diode D2 positive pole is connected to reverse input power, negative pole is connected to the second conducting metal-oxide-semiconductor Q2 grid, second conducting metal-oxide-semiconductor Q2 source electrode is connected to motor 10 positive pole, drain electrode is connected to sampling resistor module, and the first aerotron B1 base stage is connected to sampling resistor module, collecting electrode is connected to the second zener diode D2 negative pole, emitter is connected to the second zener diode D2 positive pole; Described second aerotron B2 base stage and emitter are all connected to the second conducting metal-oxide-semiconductor Q2 and drain, and collecting electrode is connected to the second conducting metal-oxide-semiconductor Q2 base stage.
When forward received current inputs to circuit, circuit right half part works, when in like manner oppositely received current inputs, and left half of some work corresponding with it.Initial condition first conducting metal-oxide-semiconductor Q1 conducting after powering on, second conducting metal-oxide-semiconductor Q2 ends, electric current leads to for by two zener diode D1, between D2 and contact resistance R1 (direction of current from left to right), wherein on the second zener diode D2, current potential is high level, the base stage of the second conducting metal-oxide-semiconductor Q2 has high level voltage with the compole penetrated, second conducting metal-oxide-semiconductor Q2 conducting, electric current is through the first conducting metal-oxide-semiconductor Q1, after second conducting metal-oxide-semiconductor Q2, drive motor 10 rotates, after turning to butting section, motor is forced to stop, electric current starts rapid increase, increase to a certain degree, the pressure drop between two sample resistance R2 is made to become large, the base potential of the second corresponding with it aerotron B2 raises, second aerotron B2 conducting, so the pressure drop on the second zener diode D2 diminishes, second conducting metal-oxide-semiconductor Q2 ends.After cut-off; high level voltage is had between the first aerotron B1 base stage and emitter; make the collector and emitter conducting of the first aerotron B1; so dragged down the current potential between the first zener diode D1 and the second zener diode D2; so the second conducting metal-oxide-semiconductor Q2 can not get back to conducting state again; electric current remains on zero-bit always, is in guard mode.
Preferably, in fig. 2, the present invention is also provided with multiple resistance and gangs up circuit and metering function to play, and multiple electric capacity is to play filtering interfering, to prevent the effect of maloperation.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Claims (1)
1. a control system of rearview mirror folder, comprise back mirror, butting section, control setup, it is characterized in that: described control setup comprises motor, is connected to two control modules of motor, and described two control modules access forward received current respectively and reverse received current makes motor rotate forward and contrarotation; Each control module comprises current lead-through module, current cut-off module and sampling module, received current inputs to motor by current lead-through module and motor is rotated thus drives back mirror to rotate to butting section, and back mirror rotates to butting section post-sampling module samples circuit voltage and makes current cut-off module motor be stopped the rotation the current cut-off inputing to motor;
Described current lead-through module comprises the first zener diode, the first conducting metal-oxide-semiconductor, the second conducting metal-oxide-semiconductor and contact resistance; Described current cut-off module comprises the second zener diode, the first aerotron, the second aerotron; Described sampling module comprises two resistance in parallel; Flow through the first zener diode after the input of described forward received current to make the first conducting metal-oxide-semiconductor conducting flow through contact resistance to make the second conducting metal-oxide-semiconductor conducting and drive motor rotates simultaneously, back mirror rotates to butting section rear motor electric current and increases, the voltage between two in parallel resistance increase make the first triode ON, the second conducting metal-oxide-semiconductor end and makes that the second zener diode ends, the collector and emitter conducting of the second aerotron makes the second conducting metal-oxide-semiconductor remain on off condition;
Described first zener diode positive pole is connected to forward input power, negative pole is connected to the first conducting metal-oxide-semiconductor grid, first conducting metal-oxide-semiconductor source electrode is connected to motor positive pole, drain electrode is connected to sampling module, and contact resistance one end is connected to the first zener diode negative pole other end and is connected to the second zener diode negative pole; Described second zener diode positive pole is connected to reverse input power, negative pole is connected to the second conducting metal-oxide-semiconductor grid, second conducting metal-oxide-semiconductor source electrode is connected to motor negative pole, drain electrode is connected to sampling module, and the first transistor base is connected to sampling module, collecting electrode is connected to the second zener diode negative pole, emitter is connected to the second zener diode positive pole; Described second transistor base and emitter are all connected to the second conducting metal-oxide-semiconductor drain electrode, and collecting electrode is connected to the second conducting metal-oxide-semiconductor grid; Described sampling module is made up of two shunt resistances; Multiple filter capacitor and current-limiting resistance is also comprised in described control module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310291808.5A CN103342114B (en) | 2013-07-10 | 2013-07-10 | A kind of control system of rearview mirror folder |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310291808.5A CN103342114B (en) | 2013-07-10 | 2013-07-10 | A kind of control system of rearview mirror folder |
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| CN103342114A CN103342114A (en) | 2013-10-09 |
| CN103342114B true CN103342114B (en) | 2016-02-03 |
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| CN201310291808.5A Active CN103342114B (en) | 2013-07-10 | 2013-07-10 | A kind of control system of rearview mirror folder |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107769638A (en) * | 2016-08-17 | 2018-03-06 | 韩国达睦多媒体有限公司 | Method and apparatus for drive motor |
| CN112519684B (en) * | 2020-12-16 | 2022-11-29 | 上海欧菲智能车联科技有限公司 | Method and device for adjusting exterior rearview mirror, storage medium and electronic equipment |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7336044B1 (en) * | 1999-09-20 | 2008-02-26 | Visiocorp Patents S.A.R.L. | Direct current motor control circuit |
| TW200944402A (en) * | 2008-04-18 | 2009-11-01 | Device Auto Accessories Co Ltd R | Vehicular rearview mirror control device and method thereof |
| CN201405784Y (en) * | 2008-12-17 | 2010-02-17 | 麦格纳唐纳利(上海)汽车系统有限公司 | Overload protection device for folding mechanism of rearview mirror |
| CN202764835U (en) * | 2012-09-19 | 2013-03-06 | 宁波市富来电子科技有限公司 | Intelligent outside rear-view mirror electric folder device |
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