CN203859716U - Outer rearview mirror reversing automatic overturn control circuit - Google Patents
Outer rearview mirror reversing automatic overturn control circuit Download PDFInfo
- Publication number
- CN203859716U CN203859716U CN201420274682.0U CN201420274682U CN203859716U CN 203859716 U CN203859716 U CN 203859716U CN 201420274682 U CN201420274682 U CN 201420274682U CN 203859716 U CN203859716 U CN 203859716U
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- resistance
- module
- comparator
- control circuit
- voltage
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- Expired - Fee Related
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- Rear-View Mirror Devices That Are Mounted On The Exterior Of The Vehicle (AREA)
- Control Of Multiple Motors (AREA)
Abstract
The utility model discloses an outer rearview mirror reversing automatic overturn control circuit. The control circuit comprises a sampling resistor, a voltage amplification module, an operation amplification module, an operation amplification shaping module and a voltage dividing module. One end of the sampling resistor is connected to a brush motor, and the other end of the sampling resistor is connected to the ground. A fluctuation voltage generated by the sampling resistor is coupled by a coupling capacitor, and then transmitted to the operation amplification shaping module via the voltage amplification module and the operation amplification module. A power supply input voltage is divided by a first resistor and a second resistor, and then transmitted to the operation amplification module and the operation amplification shaping module. The first resistor is in series connection with the second resistor. A fluctuation voltage of the operation amplification shaping module passes through the voltage dividing module to generate a motor rotation pulse signal output to a microprocessor. The fluctuation signal is amplified, filtered and shaped, to generate a motor rotation pulse signal that is finally processed by the microprocessor, so that the function of overturn and accurate reset of the outer rearview mirror is achieved without the motor changed. The circuit can be widely used in back loading markets.
Description
Technical field
The utility model relates to outside rear-view mirror reversing technical field, relates in particular to a kind of outside rear-view mirror reversing automatic turning control circuit.
Background technology
The existing outside rear-view mirror automatic control principle of moveing backward mainly contains two kinds: the first is to realize upset the time that rotates and reverse by controlling motor and set back putting function; The second is by using stepping motor to realize this function.First kind of way is because motor positive and inverse resistance is inconsistent, and making to recover position has error, readjusts again after a while a Catching-rabbits; Second method is reliable, but cost is high, and will change motor, is not suitable for rear dress market.Therefore existing two kinds of control principles all cannot meet the demand in market.
Utility model content
For the weak point existing in above-mentioned technology, the outside rear-view mirror reversing automatic turning control circuit that the utility model provides a kind of and controls accurately, cost is low, this circuit can be realized the position of accurate control electric machine rotation, thereby realizes outside rear-view mirror upset and accurately reset.
For achieving the above object, the utility model provides a kind of outside rear-view mirror reversing automatic turning control circuit, comprises the sample resistance, voltage amplification module, amplifier amplification module, amplifier Shaping Module and the division module that gather brush motor current signal; One end of described sample resistance connects brush motor, the other end ground connection of described sample resistance, and the fluctuation voltage that produces of described sample resistance be coupled by coupling capacitance after successively by transferring to amplifier Shaping Module after voltage amplification module and amplifier amplification module; Power input voltage by series connection the first resistance and the second electric resistance partial pressure after transfer to respectively amplifier amplification module and amplifier Shaping Module; Fluctuation voltage on described amplifier Shaping Module produces after by division module and exports the electric machine rotation pulse signal of microprocessor to.
Wherein, this control circuit also comprises the first filter capacitor, and described the first filter capacitor is in parallel with the second resistance, and the common end grounding of described the first filter capacitor and the second resistance.
Wherein, described amplifier amplification module is the first comparator, described amplifier Shaping Module is the second comparator, described voltage amplification module comprises the 3rd resistance and the 3rd electric capacity in parallel, the first common port that described the 3rd resistance and the 3rd electric capacity form and coupling capacitance are all connected to the end of oppisite phase of the first comparator, the dividing point that described the first resistance and the second resistance form is connected to the in-phase end of the first comparator, the output of described the first comparator is connected to the in-phase end of the second comparator by diode, the dividing point that described the first resistance and the second resistance form is connected to the end of oppisite phase of the second comparator, the output of described the second comparator is connected to division module.
Wherein, described division module comprises the 4th resistance and the 5th resistance, the output of described the second comparator is connected to one end of the 4th resistance, one end ground connection of described the 5th resistance, the other end of described the 5th resistance is electrically connected and forms with the other end of the 4th resistance the common port that produces electric machine rotation pulse signal.
Wherein, described power input voltage is connected to the in-phase end of the second comparator by the 6th resistance, and described the 6th resistance is parallel with the 4th electric capacity for filtering.
The beneficial effects of the utility model are: compared with prior art, the outside rear-view mirror reversing automatic turning control circuit that the utility model provides, when brush motor internal rotor rotates, it carries out regular motor and switches contact point, sample resistance gathers the current signal of this brush motor and produces fluctuation signal, this fluctuation signal amplifies by amplifier amplification module, again after filtering and the shaping of amplifier Shaping Module, produce electric machine rotation pulse signal, finally by this electric machine rotation pulse signal of microprocessor processes, realize the position of accurately controlling electric machine rotation, outside rear-view mirror upset and the function accurately resetting, the features such as that this control circuit also has is simple to operate, reasonable in design, control accurately and cost is low, without changing motor, can be widely used in rear dress market.
Brief description of the drawings
Fig. 1 is the fundamental diagram of outside rear-view mirror reversing automatic turning control circuit of the present utility model.
Main element symbol description is as follows:
10, voltage amplification module 20, division module
30, brush motor
Embodiment
In order more clearly to explain the utility model, below in conjunction with accompanying drawing, the utility model is further described.
Refer to Fig. 1, outside rear-view mirror reversing automatic turning control circuit of the present utility model, comprises the sample resistance R, voltage amplification module 10, amplifier amplification module, amplifier Shaping Module and the division module 20 that gather brush motor 30 current signals; One end of sample resistance R connects brush motor 30, the other end ground connection of sample resistance R, and sample fluctuation voltage that electric R resistance produces by coupling capacitance C1 coupling after successively by transferring to amplifier Shaping Module after voltage amplification module 10 and amplifier amplification module; Power input voltage VIN by series connection the first resistance R 1 and the second resistance R 2 dividing potential drops after transfer to respectively amplifier amplification module and amplifier Shaping Module; Fluctuation voltage on amplifier Shaping Module exports the electric machine rotation pulse signal I_DET of microprocessor (not shown) to by the rear generation of division module 20.This control circuit also comprises the first filter capacitor C1, the first filter capacitor C1 is in parallel with the second resistance R 2, and the common end grounding of the first filter capacitor C1 and the second resistance R 2, by the first filter capacitor C1, the second resistance R 2 is carried out to filtering, in addition, power input voltage VIN is 10V.
Compared to the situation of prior art, the outside rear-view mirror reversing automatic turning control circuit that the utility model provides, when brush motor 30 internal rotors rotate, it carries out regular motor and switches contact point, sample resistance R gathers the current signal of this brush motor 30 and produces fluctuation signal, this fluctuation signal amplifies by amplifier amplification module, again after filtering and the shaping of amplifier Shaping Module, produce electric machine rotation pulse signal I_DET, finally by this electric machine rotation pulse signal of microprocessor processes I_DET, realize the position of accurately controlling electric machine rotation, outside rear-view mirror upset and the function accurately resetting, the features such as that this control circuit also has is simple to operate, reasonable in design, control accurately and cost is low, and without changing motor, can be widely used in rear dress market.
In the present embodiment, amplifier amplification module is the first comparator U1, amplifier Shaping Module is the second comparator U2, voltage amplification module 10 comprises the 3rd resistance R 3 and the 3rd capacitor C 3 in parallel, the first common port that the 3rd resistance R 3 and the 3rd capacitor C 3 form and coupling capacitance C1 are all connected to the end of oppisite phase of the first comparator U1, the dividing point that the first resistance R 1 and the second resistance R 2 form is connected to the in-phase end of the first comparator U1, the output of the first comparator U1 is connected to the in-phase end of the second comparator U2 by diode D, the dividing point that the first resistance R 1 and the second resistance R 2 form is connected to the end of oppisite phase of the second comparator U2, the output of the second comparator U2 is connected to division module 20.Division module 20 comprises the 4th resistance R 4 and the 5th resistance R 5, the output of the second comparator U2 is connected to one end of the 4th resistance R 4, one end ground connection of the 5th resistance R 5, the other end of the 5th resistance R 5 is electrically connected and forms with the other end of the 4th resistance R 4 common port that produces electric machine rotation pulse signal I_DET.In this circuit, the waveform voltage between the output by diode D to the first comparator U1 and the in-phase end of the second comparator U2 is carried out filtering, can filtering interfering; In addition, because microprocessor is small voltage work components and parts, the voltage that the second comparator U2 shaping is obtained carries out transferring on microprocessor after dividing potential drop, can effectively prevent that microprocessor from causing damage because of overtension, effectively protected microprocessor.
In the present embodiment, power input voltage VIN is connected to the in-phase end of the second comparator U2 by the 6th resistance R 6, and the 6th resistance R 6 is parallel with the 4th capacitor C 4 for filtering.The voltage that power input voltage VIN is inputed to the second comparator U2 by the 4th capacitor C 4 carries out filtering, effectively prevents from disturbing.
The outside rear-view mirror reversing automatic turning control circuit that the utility model provides, its operation principle is as follows: when brush motor 30 internal rotors rotate, make brush motor 30 switch contact point, gather brush motor 30 current signals by sample resistance R, electric current produces fluctuation signal after by sample resistance R ground connection, this fluctuation signal is coupled to by coupling capacitance C1 on the end of oppisite phase of the first comparator U1, power input voltage VIN by series connection the first resistance R 1 and the second resistance R 2 dividing potential drops after get in-phase end and the second comparator end of oppisite phase that median exports respectively the first comparator U1 to; Then as required, regulate the multiplication factor of fluctuation signal by voltage amplification module 10, and by the first filter capacitor C1, the second comparator U2 is carried out to filtering; Fluctuation signal is amplified in the first comparator U1, in the second comparator U2, carry out filter shape, then produce electric machine rotation pulse signal, finally by microprocessor processes electric machine rotation pulse signal, thereby record electric machine rotation number of times, realize the function of accurately controlling electric machine rotation position.
The outside rear-view mirror reversing automatic turning control circuit that the utility model provides, it,, compared with existing two kinds of control modes, has following advantage:
1) directly the fluctuation signal collecting is carried out after amplification filtering shaping, produce electric machine rotation pulse signal, finally by microprocessor processes electric machine rotation pulse signal, thereby record electric machine rotation number of times, realize the function of accurately controlling electric machine rotation position; Avoided inconsistent because of motor positive and inverse resistance, making to recover position has the defect of error.
2) with respect to stepping motor, the control of this control circuit is reliable, cost is low, without changing motor, can be widely used in rear dress market.
Disclosed is above only several specific embodiment of the present utility model, but the utility model is not limited thereto, and the changes that any person skilled in the art can think of all should fall into protection range of the present utility model.
Claims (5)
1. an outside rear-view mirror reversing automatic turning control circuit, is characterized in that, comprises the sample resistance, voltage amplification module, amplifier amplification module, amplifier Shaping Module and the division module that gather brush motor current signal; One end of described sample resistance connects brush motor, the other end ground connection of described sample resistance, and the fluctuation voltage that produces of described sample resistance be coupled by coupling capacitance after successively by transferring to amplifier Shaping Module after voltage amplification module and amplifier amplification module; Power input voltage by series connection the first resistance and the second electric resistance partial pressure after transfer to respectively amplifier amplification module and amplifier Shaping Module; Fluctuation voltage on described amplifier Shaping Module produces after by division module and exports the electric machine rotation pulse signal of microprocessor to.
2. outside rear-view mirror reversing automatic turning control circuit according to claim 1, it is characterized in that, this control circuit also comprises the first filter capacitor, and described the first filter capacitor is in parallel with the second resistance, and the common end grounding of described the first filter capacitor and the second resistance.
3. outside rear-view mirror reversing automatic turning control circuit according to claim 1, it is characterized in that, described amplifier amplification module is the first comparator, described amplifier Shaping Module is the second comparator, described voltage amplification module comprises the 3rd resistance and the 3rd electric capacity in parallel, the first common port that described the 3rd resistance and the 3rd electric capacity form and coupling capacitance are all connected to the end of oppisite phase of the first comparator, the dividing point that described the first resistance and the second resistance form is connected to the in-phase end of the first comparator, the output of described the first comparator is connected to the in-phase end of the second comparator by diode, the dividing point that described the first resistance and the second resistance form is connected to the end of oppisite phase of the second comparator, the output of described the second comparator is connected to division module.
4. outside rear-view mirror reversing automatic turning control circuit according to claim 3, it is characterized in that, described division module comprises the 4th resistance and the 5th resistance, the output of described the second comparator is connected to one end of the 4th resistance, one end ground connection of described the 5th resistance, the other end of described the 5th resistance is electrically connected and forms with the other end of the 4th resistance the common port that produces electric machine rotation pulse signal.
5. outside rear-view mirror reversing automatic turning control circuit according to claim 1, is characterized in that, described power input voltage is connected to the in-phase end of the second comparator by the 6th resistance, and described the 6th resistance is parallel with the 4th electric capacity for filtering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420274682.0U CN203859716U (en) | 2014-05-27 | 2014-05-27 | Outer rearview mirror reversing automatic overturn control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420274682.0U CN203859716U (en) | 2014-05-27 | 2014-05-27 | Outer rearview mirror reversing automatic overturn control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203859716U true CN203859716U (en) | 2014-10-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420274682.0U Expired - Fee Related CN203859716U (en) | 2014-05-27 | 2014-05-27 | Outer rearview mirror reversing automatic overturn control circuit |
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| CN (1) | CN203859716U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109343399A (en) * | 2018-10-22 | 2019-02-15 | 浙江亚尚智能科技有限公司 | The motor control module of shaver control circuit |
-
2014
- 2014-05-27 CN CN201420274682.0U patent/CN203859716U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109343399A (en) * | 2018-10-22 | 2019-02-15 | 浙江亚尚智能科技有限公司 | The motor control module of shaver control circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141001 Termination date: 20150527 |
|
| EXPY | Termination of patent right or utility model |