CN205665608U - A low -power consumption scrubbing brush detection circuitry for lithium cell dust catcher - Google Patents
A low -power consumption scrubbing brush detection circuitry for lithium cell dust catcher Download PDFInfo
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- CN205665608U CN205665608U CN201620533433.8U CN201620533433U CN205665608U CN 205665608 U CN205665608 U CN 205665608U CN 201620533433 U CN201620533433 U CN 201620533433U CN 205665608 U CN205665608 U CN 205665608U
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- Prior art keywords
- resistance
- scrubbing brush
- nmos tube
- diode
- power consumption
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- Electric Vacuum Cleaner (AREA)
Abstract
The utility model discloses a low -power consumption scrubbing brush detection circuitry for lithium cell dust catcher, including singlechip, NMOS pipe N1, the 2nd NMOS pipe N2, PMOS pipe P, first diode D1, second diode D2, first resistance R1, second resistance R2 and scrubbing brush motor, singlechip, NMOS pipe N1, PMOS pipe P, first diode D1, first resistance R1, second resistance R2 constitute scrubbing brush detection circuitry, realize the measuring to the scrubbing brush connection status to send scrubbing brush control signal to the 2nd NMOS pipe N2, the 2nd NMOS pipe N2 receives the work of scrubbing brush control signal drive scrubbing brush motor. The utility model discloses can promote the security of dust catcher, reduce and use the consumption.
Description
Technical field
This utility model relates to a kind of vacuum cleaner circuit, is specifically related to a kind of low-power consumption scrubbing brush for lithium battery vacuum cleaner
Testing circuit.
Background technology
Along with the development of society, the raising of people's living standard, vacuum cleaner has become as in daily life indispensable
Household electrical appliance.The operation principle of vacuum cleaner is generally by the draught fan impeller of vacuum cleaner under motor high-speed driving, by impeller
In air discharge at a high speed blower fan, make air in vacuum part constantly be supplemented in blower fan simultaneously, thus and extraneous formed higher
Pressure reduction, the dust of suction nozzle is inhaled into vacuum part with air.Existing vacuum cleaner can connect at suction nozzle scrubbing brush, and passes through
Scrubbing brush drives module to carry out drivingly dataller's work, but, existing vacuum cleaner its scrubbing brush after powered up drives module i.e. output voltage,
When not connecting scrubbing brush, the scrubbing brush output metal cross-talk of human body touch to vacuum cleaner has the danger of electric shock, there is safety
Hidden danger, and scrubbing brush drives module continued power to also result in the waste of the energy.
Therefore, design a kind of low-power consumption scrubbing brush testing circuit for lithium battery vacuum cleaner, promote the safety of vacuum cleaner,
Reduce and use power consumption, it is clear that there is realistic meaning energetically.
Summary of the invention
Goal of the invention of the present utility model is to provide a kind of low-power consumption scrubbing brush testing circuit for lithium battery vacuum cleaner, carries
Rise the safety of vacuum cleaner, reduce and use power consumption.
To achieve the above object of the invention, the technical solution adopted in the utility model is: a kind of for lithium battery vacuum cleaner
Low-power consumption scrubbing brush testing circuit, including single-chip microcomputer, the first NMOS tube N1, the second NMOS tube N2, PMOS P, the first diode D1,
Second diode D2, the first resistance R1, the second resistance R2 and earth brush motor；
The grid of described first NMOS tube N1 is connected to the scrubbing brush detection control signal outfan of single-chip microcomputer, and source electrode connects electricity
Pond negative pole, drain electrode is connected to one end of the first resistance R1；
The grid of described PMOS P is connected to one end of the first resistance R1, and source electrode is connected to the other end of the first resistance R1,
Drain electrode is connected respectively to the scrubbing brush detection signal input of one end of the second resistance R2, the negative pole of the first diode D1 and single-chip microcomputer
End；
The other end of described second resistance R2 and the positive pole of the first diode D1 are commonly connected to battery cathode；
The grid of described second NMOS tube N2 is connected to the scrubbing brush control signal outfan of single-chip microcomputer, and source electrode is connected to battery
Negative pole, drain electrode is connected respectively to the other end of the first resistance R1, the positive pole of the second diode D2 and one end of earth brush motor；
The described negative pole of the second diode D2 and the other end of earth brush motor are commonly connected to anode；
During described first NMOS tube N1 conducting, flow through in described earth brush motor, the first resistance R1 and the first NMOS tube N1
Electric current is less than the driving electric current of earth brush motor；
During described second NMOS tube N2 conducting, flow through the electric current of described earth brush motor and the second NMOS tube N2 more than or equal to ground
The driving electric current of brush motor.
Preferably, described first diode D1 is Zener diode.
Preferably, connect between grid and the scrubbing brush detection control signal outfan of single-chip microcomputer of described first NMOS tube N1
There is the 3rd resistance R3.
Preferably, being additionally provided with the 4th resistance R4, one end of described 4th resistance R4 is connected to described 3rd resistance R3 and
Between the grid of one NMOS tube N1, the other end is connected to the source electrode of the first NMOS tube N1.
Preferably, it is connected and has the 5th resistance R5 between drain electrode and one end of the first resistance R1 of described first NMOS tube N1.
Preferably, between the other end and the drain electrode of the second NMOS tube N2 of described first resistance R1, connection has the 6th resistance
R6。
Operation principle of the present utility model is: when vacuum cleaner switches off, and whole circuit is off；Work as dust suction
When device switch is opened, the scrubbing brush detection control signal outfan output high level of single-chip microcomputer, to the grid of the first NMOS tube N1, makes
Obtaining the first NMOS tube N1 conducting, now, if earth brush motor does not access in circuit, then PMOS P and the second NMOS tube N2 are all located
In off-state, the second NMOS tube N2 not output voltage, even if human body touch to vacuum cleaner scrubbing brush export metal terminal the most not
Can get an electric shock, improve the safety in utilization of vacuum cleaner；When earth brush motor accesses in circuit, by earth brush motor, the first resistance R1
The circuit turn-on constituted with the first NMOS tube N1, now flows through the electric current driving electric current less than earth brush motor of earth brush motor, ground
Brush motor is inoperative, owing to the dividing potential drop effect of the first resistance R1 makes the current potential current potential less than source electrode of the grid of PMOS P,
PMOS turns on, and the drain electrode of PMOS P detects signal input part transmission earth brush motor to the scrubbing brush of single-chip microcomputer and connected signal, single
Sheet machine has connected signal according to the earth brush motor received, defeated to the grid of the second NMOS tube N2 through scrubbing brush control signal outfan
Go out high level so that the second NMOS tube N2 conducting, now, flow through the electric current driving electricity more than or equal to earth brush motor of earth brush motor
Stream, earth brush motor operates.
Owing to technique scheme is used, this utility model compared with prior art has the advantage that
Scrubbing brush testing circuit the most of the present utility model, when scrubbing brush does not connect, the second NMOS tube not output voltage, even if
Human body touch also will not get an electric shock to the scrubbing brush output metal terminal of vacuum cleaner, improves the safety in utilization of vacuum cleaner；
Scrubbing brush testing circuit the most of the present utility model, owing to have employed the first NMOS tube and PMOS, only need to examine at needs
During geodetic brush, just starting testing circuit, i.e. just start when opening vacuum cleaner and check circuit, scrubbing brush detection control signal is high
Level, its persistent period is about 1ms, regardless of whether detect that scrubbing brush all can cut out inspection circuit, thus reduces power consumption.
Accompanying drawing explanation
Fig. 1 is the electrical block diagram of this utility model embodiment one.
Detailed description of the invention
Below in conjunction with the accompanying drawings and this utility model is further described by embodiment:
Embodiment one:
Shown in Figure 1, a kind of low-power consumption scrubbing brush testing circuit for lithium battery vacuum cleaner, including single-chip microcomputer, first
NMOS tube N1, the second NMOS tube N2, PMOS P, the first diode D1, the second diode D2, the first resistance R1, the second resistance R2
And earth brush motor；
The grid of described first NMOS tube is connected to the scrubbing brush detection control signal outfan of single-chip microcomputer, and source electrode connects battery
Negative pole, drain electrode is connected to one end of the first resistance R1；
The grid of described PMOS P is connected to one end of the first resistance R1, and source electrode is connected to the other end of the first resistance R1,
Drain electrode is connected respectively to the scrubbing brush detection signal input of one end of the second resistance R2, the negative pole of the first diode D1 and single-chip microcomputer
End；
The other end of described second resistance R2 and the positive pole of the first diode D1 are commonly connected to battery cathode；
The grid of described second NMOS tube N2 is connected to the scrubbing brush control signal outfan of single-chip microcomputer, and source electrode is connected to battery
Negative pole, drain electrode is connected respectively to the other end of the first resistance R1, the positive pole of the second diode D2 and one end of earth brush motor；
The described negative pole of the second diode D2 and the other end of earth brush motor are commonly connected to anode；
During described first NMOS tube N1 conducting, flow through in described earth brush motor, the first resistance R1 and the first NMOS tube N1
Electric current is less than the driving electric current of earth brush motor；
During described second NMOS tube N2 conducting, flow through the electric current of described earth brush motor and the second NMOS tube N2 more than or equal to ground
The driving electric current of brush motor.
In the present embodiment, described first diode D1 is Zener diode, defeated for detecting signal to the scrubbing brush of single-chip microcomputer
Enter the input voltage that end provides stable, single-chip microcomputer is played a protective role simultaneously.
Connect between grid and the scrubbing brush detection control signal outfan of single-chip microcomputer of described first NMOS tube and have the 3rd electricity
Resistance R3.
Being additionally provided with the 4th resistance R4, one end of described 4th resistance R4 is connected to described 3rd resistance R3 and the first NMOS tube
Between the grid of N1, the other end is connected to the source electrode of the first NMOS tube N1.
It is connected between drain electrode and one end of the first resistance R1 of described first NMOS tube N1 and has the 5th resistance R5.
Connect between the other end and the drain electrode of the second NMOS tube N2 of described first resistance R1 and have the 6th resistance R6.
Specifically, in the present embodiment, cell voltage selects 22.2V, and the resistance of the first resistance R1 is 2.2M, the second electricity
Resistance R2 resistance is 100K, the resistance of the 3rd resistance R3 is 1K, the resistance of the 4th resistance R4 is 5.1M, the 5th resistance R5
Resistance be 1M, the resistance of the 6th resistance R6 is 47K；
When the scrubbing brush of single-chip microcomputer detects control signal outfan output high level to the grid of the first NMOS tube N1, first
NMOS tube N1 turns on, and now, is accessed by earth brush motor in circuit, by earth brush motor, the first NMOS tube N1, the first resistance R1, the
The circuit turn-on that five resistance R5 and the 6th resistance R6 are constituted, the size of current flowing through earth brush motor is 400uA, and this utility model
The driving electric current of the earth brush motor selected is 400mA, and the electric current flowing through earth brush motor is less than driving electric current, and earth brush motor is not transported
Turn；Due to the dividing potential drop effect of the first resistance R1, the source voltage of PMOS P is 2V, and grid voltage is 1V, and PMOS P turns on, and
By PMOS P drain electrode to single-chip microcomputer scrubbing brush detect signal input part input earth brush motor connected signal, single-chip microcomputer according to
The earth brush motor received has connected signal, exports high electricity through scrubbing brush control signal outfan to the grid of the second NMOS tube N2
Flat so that the second NMOS tube N2 conducting, now, the electric current flowing through earth brush motor is 400mA, equal to the driving electricity of earth brush motor
Stream, earth brush motor operates, and meanwhile, scrubbing brush detection control signal can become output low level, closes scrubbing brush detection part
Loop, reduces power consumption.
Scrubbing brush testing circuit of the present utility model, it is possible to when scrubbing brush does not connect so that the second NMOS tube N2 does not exports
Voltage, though human body touch to vacuum cleaner scrubbing brush export metal terminal also will not get an electric shock, improve the use safety of vacuum cleaner
Property.
Claims (6)
1. the low-power consumption scrubbing brush testing circuit for lithium battery vacuum cleaner, it is characterised in that: include single-chip microcomputer, a NMOS
Pipe N1, the second NMOS tube N2, PMOS P, the first diode D1, the second diode D2, the first resistance R1, the second resistance R2 and ground
Brush motor；
The grid of described first NMOS tube N1 is connected to the scrubbing brush detection control signal outfan of single-chip microcomputer, and source electrode connects battery and bears
Pole, drain electrode is connected to one end of the first resistance R1；
The grid of described PMOS P is connected to one end of the first resistance R1, and source electrode is connected to the other end of the first resistance R1, drain electrode
It is connected respectively to the scrubbing brush detection signal input part of one end of the second resistance R2, the negative pole of the first diode D1 and single-chip microcomputer；
The other end of described second resistance R2 and the positive pole of the first diode D1 are commonly connected to battery cathode；
The grid of described second NMOS tube N2 is connected to the scrubbing brush control signal outfan of single-chip microcomputer, and source electrode is connected to battery and bears
Pole, drain electrode is connected respectively to the other end of the first resistance R1, the positive pole of the second diode D2 and one end of earth brush motor；
The described negative pole of the second diode D2 and the other end of earth brush motor are commonly connected to anode；
During described first NMOS tube N1 conducting, flow through the electric current in described earth brush motor, the first resistance R1 and the first NMOS tube N1
Driving electric current less than earth brush motor；
During described second NMOS tube N2 conducting, flow through the electric current of described earth brush motor and the second NMOS tube N2 more than or equal to scrubbing brush electricity
The driving electric current of machine.
Low-power consumption scrubbing brush testing circuit for lithium battery vacuum cleaner the most according to claim 1, it is characterised in that: described
First diode D1 is Zener diode.
Low-power consumption scrubbing brush testing circuit for lithium battery vacuum cleaner the most according to claim 1, it is characterised in that: described
Connect between grid and the scrubbing brush detection control signal outfan of single-chip microcomputer of the first NMOS tube N1 and have the 3rd resistance R3.
Low-power consumption scrubbing brush testing circuit for lithium battery vacuum cleaner the most according to claim 3, it is characterised in that: also set
Have the 4th resistance R4, one end of described 4th resistance R4 be connected to described 3rd resistance R3 and the first NMOS tube N1 grid it
Between, the other end is connected to the source electrode of the first NMOS tube N1.
Low-power consumption scrubbing brush testing circuit for lithium battery vacuum cleaner the most according to claim 1, it is characterised in that: described
It is connected between drain electrode and one end of the first resistance R1 of first NMOS tube N1 and has the 5th resistance R5.
Low-power consumption scrubbing brush testing circuit for lithium battery vacuum cleaner the most according to claim 1, it is characterised in that: described
Connect between the other end and the drain electrode of the second NMOS tube N2 of the first resistance R1 and have the 6th resistance R6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620533433.8U CN205665608U (en) | 2016-06-02 | 2016-06-02 | A low -power consumption scrubbing brush detection circuitry for lithium cell dust catcher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620533433.8U CN205665608U (en) | 2016-06-02 | 2016-06-02 | A low -power consumption scrubbing brush detection circuitry for lithium cell dust catcher |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205665608U true CN205665608U (en) | 2016-10-26 |
Family
ID=57158769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620533433.8U Withdrawn - After Issue CN205665608U (en) | 2016-06-02 | 2016-06-02 | A low -power consumption scrubbing brush detection circuitry for lithium cell dust catcher |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205665608U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105867512A (en) * | 2016-06-02 | 2016-08-17 | 苏州普发科技有限公司 | Low-power-consumption ground brush detecting circuit for lithium battery dust collector |
-
2016
- 2016-06-02 CN CN201620533433.8U patent/CN205665608U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105867512A (en) * | 2016-06-02 | 2016-08-17 | 苏州普发科技有限公司 | Low-power-consumption ground brush detecting circuit for lithium battery dust collector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20161026 Effective date of abandoning: 20170517 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20161026 Effective date of abandoning: 20170517 |