CN208946223U - A kind of induction shaving control circuit - Google Patents
A kind of induction shaving control circuit Download PDFInfo
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- CN208946223U CN208946223U CN201820809315.4U CN201820809315U CN208946223U CN 208946223 U CN208946223 U CN 208946223U CN 201820809315 U CN201820809315 U CN 201820809315U CN 208946223 U CN208946223 U CN 208946223U
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- shaving
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Abstract
The utility model belongs to electronic technology field, discloses a kind of induction shaving control circuit, and by having induction module the first power supply of connection there are two contact electrode, two induction electrodes are by being shorted external conductor connection to generate induced voltage；Then control module generates control voltage according to the induced voltage；Drive module generates driving voltage further according to the control voltage；Last motor works according to the driving voltage；It is generated since induced voltage is connected to the first power supply by human body, therefore is not improved the sensitivity and reliability of induction shaving control circuit by such environmental effects.
Description
Technical field
The utility model belongs to electronic technology field more particularly to a kind of induction shaving control circuit.
Background technique
When heritage answers the working principle of shaving control circuit to be that user's handheld device carries out shaving, set of blades unification contact
To human body surface, whether what sensing device connection sensor circuit meeting automatic discrimination was touched is human body surface, specifically can root
Judge according to the capacitance of human body and itself institute's band after conductive body contact, electric motor will be started automatically if it is human body surface
Work is carried out, if contact is non-human body surface, electric motor will not go up work.
Since the capacitance of human body and itself institute's band after conductive body contact is larger by such environmental effects, such as there was dampness in the air
When, capacitance can greatly reduce, therefore will lead to heritage and answer the induction of shaving control circuit insensitive low with reliability.
Utility model content
The utility model provides a kind of induction shaving control circuit, it is intended to solve traditional induction shaving control circuit sense
Answer the insensitive problem low with reliability.
The utility model is realized in this way a kind of induction shaving control circuit, the induction shaving control circuit include:
The first power supply is connected, there are two the induction modules of contact electrode for tool, wherein two induction electrodes pass through short circuit
External conductor is connected to generate induced voltage；
It is connect with the induction module, for generating the control module of control voltage according to the induced voltage；
It is connect with the control module, for generating the drive module of driving voltage according to the control voltage；And
It is connect with the drive module, the motor for being worked according to the driving voltage.
There are two the induction modules of contact electrode to connect the first power supply, two senses by tool for the utility model embodiment
Answer electrode by being shorted external conductor connection to generate induced voltage；Then control module is generated according to the induced voltage and is controlled
Voltage；Drive module generates driving voltage further according to the control voltage；Last motor works according to the driving voltage；
It is generated since induced voltage is connected to the first power supply by human body, therefore is not improved induction shaving control electricity by such environmental effects
The sensitivity and reliability on road.
Detailed description of the invention
It is novel in order to illustrate more clearly of the technical application in the utility model embodiment, it below will be in embodiment description
Required attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is only the one of the utility model
A little embodiments for those of ordinary skill in the art without creative efforts, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is a kind of function structure chart of induction shaving control circuit provided by the embodiment of the utility model；
Fig. 2 is a kind of function structure chart of induction shaving control circuit control module provided by the embodiment of the utility model；
Fig. 3 is the exemplary circuit structure chart of induction shaving control circuit provided by the embodiment of the utility model.
Specific embodiment
It is practical new to this below in conjunction with attached drawing to keep the purpose of this utility model, technical solution and advantage clearer
Type embodiment is described in further detail.
Fig. 1 shows the modular structure of induction shaving control circuit provided by the embodiment of the utility model, for the ease of saying
It is bright, part relevant to the utility model embodiment is illustrated only, details are as follows:
A kind of above-mentioned induction shaving control circuit includes:
The first power supply VBB is connected, there are two the induction modules 01 of contact electrode for tool, wherein two contact electrodes pass through short
External conductor connection is connect to generate induced voltage.
In specific implementation, one of them is cutter head for two contact electrodes, the other is the conductive sheet for contact.Conductive sheet
Human hands can be contacted.External conductor can be the human body of user.
It is connect with induction module 01, for generating the control module 02 of control voltage according to induced voltage；
It is connect with control module 02, for generating the drive module 03 of driving voltage according to control voltage；
It is connect with drive module 03, the motor 04 for being worked according to driving voltage.
In specific implementation, induction shaving control circuit can be induction vibrissa cutter.
As shown in Fig. 2, control module 02 includes: to connect with induction module 01, for generating detection electricity according to induced voltage
The amplification module 021 of pressure；It is connect with amplification module 021, for generating the single-chip microcontroller U1 of control voltage according to detection voltage.
Fig. 3 shows the exemplary circuit structure of induction shaving control circuit provided by the embodiment of the utility model, in order to just
In explanation, part relevant to the utility model embodiment is illustrated only, details are as follows:
Amplification module 021 includes the second triode Q2, first capacitor C1 and 3rd resistor R3.
The base stage of second triode Q2 is connect with the first end of 3rd resistor R3, the collector and first of the second triode Q2
The first end of capacitor C1 collectively forms the output end of amplification module 021, and the second end of 3rd resistor R3 is the defeated of amplification module 021
Enter end, the emitter of the second triode Q2 and the second end of first capacitor C1 are connected to power ground altogether.
The power end VDD of single-chip microcontroller U1 is connect with second source VAA, and the ground terminal GND of single-chip microcontroller U1 is connect with power ground,
The first universal input output end PA6 of single-chip microcontroller U1 is the input terminal of single-chip microcontroller U1, the second universal input output of single-chip microcontroller U1
Holding PA2 is the output end of single-chip microcontroller U1.
Induction module 01 includes second resistance R2, the first sense contact J1 and the second sense contact J2.
First sense contact J1 can be the cutter head (metal conductive materials) of induction shaving control circuit, the second sense contact
J2 can be the conductive sheet of contact hand.
The first end of second resistance R2 is connect with the first power supply VBB, the second end of second resistance R2 and the first sense contact
J1 connection, the second sense contact J2 are the output end of induction module 01.
Drive module 03 includes the first triode Q1 and first resistor R1.
The base stage of first triode Q1 is connect with the first end of first resistor R1, and the current collection of the first triode Q1 extremely drives
The output end of module 03, the second end of first resistor R1 are the input terminal of drive module 03, the emitter of the first triode Q1 with
Power ground connection.
The first end of motor 04 is connect with third power supply VCC, and the second end of motor 04 is input terminal.
It is described further below in conjunction with working principle to shown in Fig. 3:
In the specific implementation process, when manpower holds the conductive sheet of hand, induction shaving control circuit is protruded into nostril
When, insert contacts nose is formed into a loop in the first sense contact J1 and the second sense contact J2 by human body, makes the second triode
Q2 conducting, the second triode Q2 collector are connected to the first universal input output end PA6 of single-chip microcontroller U1, and the first of single-chip microcontroller U1
The first universal input output end PA6 that universal input output end PA6 passes through detection single-chip microcontroller U1 by internal pull-up, single-chip microcontroller U1
State may identify whether contact nose.Pass through the second universal input output end PA2 output control electricity of single-chip microcontroller U1 after contact
Pressure, the first triode Q1 amplify to generate driving voltage control voltage, i.e. unlatching motor 04, incude shaving control circuit
It starts to work.04 work delay time of motor also can be set in single-chip microcontroller, and induction shaving control circuit can contact after moving every time
To nose, delay counter can be removed at this time.After vibrissa cutter leaves nostril, delay counter starts timing, delay time time-out
Afterwards, motor 04 stops working.As above, it can achieve contact nose vibrissa cutter work, vibrissa cutter stops after leaving nose, realizes nothing
Need the function of button operation.
The utility model embodiment is by the way that when incuding the insert contacts human hair of shaving control circuit, induction module is logical
It crosses human body and is connected to the first power supply to generate induced voltage；Then control module generates control voltage according to induced voltage；Drive mould
Block generates driving voltage further according to control voltage；Last motor works according to driving voltage；Since induced voltage passes through people
Body is connected to the first power supply and generates, therefore is not improved the sensitivity and reliability of induction shaving control circuit by such environmental effects.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all practical at this
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
Claims (7)
1. a kind of induction shaving control circuit, which is characterized in that the induction shaving control circuit includes:
The first power supply is connected, there are two the induction modules of contact electrode for tool, wherein two contact electrodes are external by being shorted
Conductor is connected to generate induced voltage；
It is connect with the induction module, for generating the control module of control voltage according to the induced voltage；
It is connect with the control module, for generating the drive module of driving voltage according to the control voltage；And
It is connect with the drive module, the motor for being worked according to the driving voltage；
One of them is cutter head for two contact electrodes, the other is the conductive sheet for contact；The conductive sheet contacts people
Body hand；The external conductor is the human body of user.
2. induction shaving control circuit as described in claim 1, which is characterized in that the control module includes:
It is connect with the induction module, for generating the amplification module of detection voltage according to the induced voltage；With
It is connect with the amplification module, for generating the single-chip microcontroller of the control voltage according to the detection voltage.
3. induction shaving control circuit as claimed in claim 2, which is characterized in that the amplification module includes the two or three pole
Pipe, first capacitor and 3rd resistor；
The base stage of second triode is connect with the first end of the 3rd resistor, the collector of second triode and institute
The first end for stating first capacitor collectively forms the output end of the amplification module, and the second end of the 3rd resistor is the amplification
The input terminal of module, the emitter of second triode and the second end of the first capacitor are connected to power ground altogether.
4. induction shaving control circuit as claimed in claim 2, which is characterized in that the power end of the single-chip microcontroller and the second electricity
Source connection, the ground terminal of the single-chip microcontroller are connect with power ground, and the first universal input output end of the single-chip microcontroller is the list
The input terminal of piece machine, the second universal input output end of the single-chip microcontroller are the output end of the single-chip microcontroller.
5. as described in claim 1 induction shaving control circuit, which is characterized in that the induction module include second resistance,
First sense contact and the second sense contact；
The first end of the second resistance is connect with first power supply, the second end of the second resistance and the first sense contact
Connection, second sense contact are the output end of the induction module.
6. induction shaving control circuit as described in claim 1, which is characterized in that the drive module includes the first triode
And first resistor；
The base stage of first triode is connect with the first end of the first resistor, the current collection of first triode extremely institute
The output end of drive module is stated, the second end of the first resistor is the input terminal of the drive module, first triode
Emitter connect with power ground.
7. induction shaving control circuit as described in claim 1, which is characterized in that the first end and third power supply of the motor
Connection, the second end of the motor are input terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820809315.4U CN208946223U (en) | 2018-05-29 | 2018-05-29 | A kind of induction shaving control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820809315.4U CN208946223U (en) | 2018-05-29 | 2018-05-29 | A kind of induction shaving control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208946223U true CN208946223U (en) | 2019-06-07 |
Family
ID=66730493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820809315.4U Active CN208946223U (en) | 2018-05-29 | 2018-05-29 | A kind of induction shaving control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208946223U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110480690A (en) * | 2019-09-27 | 2019-11-22 | 上海飞科电器股份有限公司 | Electric razor and electric razor system |
-
2018
- 2018-05-29 CN CN201820809315.4U patent/CN208946223U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110480690A (en) * | 2019-09-27 | 2019-11-22 | 上海飞科电器股份有限公司 | Electric razor and electric razor system |
| WO2021057276A1 (en) * | 2019-09-27 | 2021-04-01 | 上海飞科电器股份有限公司 | Electric shaver and electric shaver system |
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