CN208547824U - A kind of ON-OFF control circuit and electric tool - Google Patents
A kind of ON-OFF control circuit and electric tool Download PDFInfo
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- CN208547824U CN208547824U CN201821262301.1U CN201821262301U CN208547824U CN 208547824 U CN208547824 U CN 208547824U CN 201821262301 U CN201821262301 U CN 201821262301U CN 208547824 U CN208547824 U CN 208547824U
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Abstract
The utility model is suitable for switch power technology field, provides a kind of ON-OFF control circuit and electric tool, and the circuit includes: to be arranged between MCU and power supply, the first switch module connected between MCU and power supply described on or off；It is arranged between the MCU and first switch module, controls the second switch module of the first switch module on or off；The touch-switch of on-off information is issued to the circuit；Detect the detection module that the MCU is fed back to after the touch-switch on-off information.The utility model first switch module when pressing touch-switch for the first time is connected, and MCU has power supply inflow, then second switch module is connected；When MCU detect touch-switch be pressed again be connected when, by second switch module, first switch module disconnect, cut off all power supplys, by detection touch-switch state realize MCU autonomous control be opened and closed power supply, realize shutdown or it is standby under do not consume any electric current.
Description
Technical field
The utility model belongs to switch power technology field more particularly to a kind of ON-OFF control circuit and electric tool.
Background technique
In current Electrification Age, various electrical equipments and control switch power supply are increasingly appearing in life,
Traditional mechanical switch power supply more and more can not meet people and aspire after perfection the demand of life.In the prior art, many to use
The electrical equipment of mechanical switch power supply is in shutdown or standby mode, although electric appliance including most of life cycle
Equipment is in shutdown or standby mode, does not work, but in fact power supply is continued for powering for the MCU of electrical equipment, this meeting
Cause a large amount of electric energy to be wasted, can only could cut off being electrically connected between electrical equipment and power supply by artificially closing power supply,
It avoids waste of energy, and can inevitably bring the consume of mechanical switch power supply itself in this way.Therefore, how to be set by electric appliance
Standby MCU autonomous control power supply being opened and closing, and realizes under electrical equipment shutdown or standby mode, electrical equipment does not consume
Any electric current reaches zero-power requirement, is the art technical problem urgently to be resolved.
Utility model content
The utility model provides a kind of ON-OFF control circuit, it is intended to solve how real under electrical equipment shutdown or standby mode
The problem of existing zero-power.
The utility model is realized in this way the circuit includes:
It is arranged between MCU and power supply, the first switch module connected between MCU and power supply described on or off；
It is arranged between the MCU and first switch module, controls the second of the first switch module on or off
Switch module；
The touch-switch of on-off information is issued to the circuit；
Detect the detection module that the MCU is fed back to after the touch-switch on-off information.
Further, Voltage stabilizing module, the Voltage stabilizing module are also in series between the MCU and the first switch module
Input terminal connect the first switch module, output end connects the MCU.
Further, the detection module includes:
Diode positive to be connect with the MCU, that cathode is connect with the touch-switch；
One end connects the output end of the Voltage stabilizing module, and the other end is connected between the diode cathode and the MCU
Connecting line on first resistor.
Further, the detection module further includes that one end is connected between the diode cathode and the MCU
On connecting line, the first capacitor of other end ground connection.
Further, the second switch module includes the second switch that control terminal connects the MCU, output end ground connection
And it is connected on the 3rd resistor R3 of the second switch input terminal and the first switch module control terminal.
Further, the first switch module includes first switch, the 4th resistance and the 5th resistance, and described first opens
It closes input terminal and connects power supply, output end connects the MCU, and the 4th resistance is connected to the control terminal of the first switch and the
On connecting line between two switch modules, described 5th resistance one end connects the input terminal of the first switch, other end connection
On connecting line between the control terminal and the 4th resistance of the first switch.
Further, the circuit further include:
One end is connected to the connecting line between the output end of the first switch module and the input terminal of the Voltage stabilizing module
On, the second capacitor of other end ground connection.
Further, the circuit further include:
One end is connected on the connecting line between the output end of the Voltage stabilizing module and the MCU, and the of other end ground connection
Three capacitors.
Further, the touch-switch has several, several described touch-switch are in parallel.
The utility model also provides a kind of electric tool, including above-mentioned ON-OFF control circuit.
ON-OFF control circuit provided by the embodiment of the utility model, when circuit does not have any movement, MCU does not have power flow
Enter and do not work, when pressing touch-switch for the first time and also not discharging touch-switch, first switch module conducting, MCU has power supply
It flows into, starts to work；MCU detects that touch-switch is pressed by detection module, and second switch module is connected；When pressing again
When lower touch-switch, the MCU for being in working condition is immediately detected touch-switch by detection module and is pressed, and MCU is by
Two switch modules, first switch module disconnect, and cut off all power supplys, and circuit returns to original state, and whole process is due to MCU benefit
It realizes that power supply is opened/closed to MCU autonomous control with detection module detection touch-switch state, therefore realizes in shutdown or standby shape
Any electric current is not consumed under state, reaches the zero-power requirement realized under shutdown or standby mode.
Detailed description of the invention
Fig. 1 is the ON-OFF control circuit block diagram that the utility model embodiment one provides；
Fig. 2 is the ON-OFF control circuit block diagram that the utility model embodiment two provides；
Fig. 3 is the ON-OFF control circuit figure that the utility model embodiment three provides；
Fig. 4 is the ON-OFF control circuit figure that the utility model embodiment four provides；
Fig. 5 is the ON-OFF control circuit figure that the utility model embodiment five provides；
Fig. 6 is the ON-OFF control circuit figure that the utility model embodiment six provides；
Fig. 7 is the ON-OFF control circuit figure that the utility model embodiment seven provides；
Fig. 8 is the ON-OFF control circuit figure that the utility model embodiment eight provides；
Fig. 9 is the ON-OFF control circuit figure that the utility model embodiment eight provides.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
The utility model provides a kind of ON-OFF control circuit, comprising: is arranged between MCU and power supply, on or off
The first switch module connected between the MCU and power supply；It is arranged between the MCU and first switch module, described in control
The second switch module of first switch module on or off；The touch-switch of on-off information is issued to the circuit；Detection institute
State the detection module that the MCU is fed back to after touch-switch on-off information.When circuit does not have any movement, MCU does not have power supply
Inflow does not work, and when pressing touch-switch for the first time and also not discharging touch-switch, first switch module conducting, MCU has electricity
Source stream enters, and starts to work；MCU detects that touch-switch is pressed by detection module, and the second switch module is connected；When
Touch-switch is pressed again when being connected, and the MCU for being in working condition is immediately detected the touch-switch and is pressed, and passes through
MCU by second switch module, first switch module disconnect, cut off all power supplys, circuit returns to original state, whole process by
Opening and closing for MCU autonomous control power supply is realized using detection module detection touch-switch state in MCU, therefore is realized and closed
Any electric current is not consumed under machine or standby mode, reaches the zero-power requirement realized under shutdown or standby mode.
Embodiment one
The utility model embodiment provides a kind of ON-OFF control circuit, as shown in Figure 1, circuit includes:
It is arranged between MCU and power supply, the first switch module connected between on or off MCU and power supply；
It is arranged between MCU and first switch module, controls the second switch module of first switch module on or off；
The touch-switch of on-off information is issued to circuit；
The detection module of MCU is fed back to after detection touch-switch on-off information.
ON-OFF control circuit working principle in the embodiment is as follows:
When circuit does not have any movement, first switch module is to disconnect, and MCU does not have power supply inflow, and MCU does not work.
When pressing touch-switch for the first time, and not discharging touch-switch also, first switch module conducting connection, MCU has power supply inflow,
It starts to work.MCU detects that touch-switch is pressed by detection module at this time, and MCU output signal leads second switch module
It is logical, touch-switch is discharged at this time, and the effect of touch-switch is replaced by the second switch module, and remains to maintain first to open at this time
Close the conducting of module；The above-mentioned course of work is to press completing in a flash for touch-switch.When touch-switch is pressed again
When conducting, the MCU for being in working condition is immediately detected touch-switch by detection module and is pressed, by compiling inside MCU
The instruction of journey, output signal close the second switch module, second switch module are disconnected, discharges touch-switch at this time, the
One switch module disconnects, and cuts off all power supplys, circuit returns to original state.
In the embodiment, first switch module input connects power supply, and output end connects MCU；The output of second switch module
The control terminal of end connection first switch module, control terminal connect MCU；Detection module one end is connected to the control of first switch module
End, the other end connect MCU；Touch-switch operates for realizing the touch-switch of user, issues on-off information to the circuit；Inspection
Voltage signal variation when module is used to detect touch-switch on-off is surveyed, MCU is supplied to and carries out touch-switch identification；MCU is received
The signal of the detection module exports control signal by logical process to control other moulds in second switch module or circuit
Block work；The on-off connected between first switch module control MCU and power supply；Second switch module is according to the control signal of MCU
The work of first switch module is controlled, when second switch module is connected, the conducting of first switch module, when second switch module disconnects,
First switch module disconnects.The circuit realizes that power supply is opened/closed to MCU autonomous control, realizes under shutdown or standby mode, no
Any electric current is consumed, the zero-power requirement realized under shutdown or standby mode is reached.
Embodiment two
The utility model embodiment provides a kind of ON-OFF control circuit, as shown in Fig. 2, in the circuit base of embodiment one
On, Voltage stabilizing module is also in series between MCU and first switch module, the input terminal of Voltage stabilizing module connects first switch module, defeated
Outlet connects MCU.
In the embodiment, Voltage stabilizing module is used to provide stable operating voltage for MCU and detection module.Voltage stabilizing module is preferred
Using IC-LDO.
Embodiment three
The utility model embodiment provides a kind of ON-OFF control circuit, as shown in figure 3, in the circuit base of embodiment two
On, detection module includes:
Anode is connect with MCU, the diode D1 that cathode is connect with touch-switch SW1；
One end connects the output end of Voltage stabilizing module U1, and the other end is connected to the connecting line between diode D1 anode and MCU
On first resistor R1.
In the embodiment, diode D1 for isolated power supply input voltage vin to detection module to touch-switch SW1's
The influence of detectable voltage signals keeps detection signal more acurrate；First resistor R1 is used to provide a stable detection voltage for MCU
Signal.When circuit does not have any movement, first switch module is to disconnect, and Vout and MCU do not work without power supply, when
When user presses touch-switch SW1 and discharges not yet, VS point voltage is pulled down to 0V, the conducting connection of first switch module, MCU
The signal of detection module is obtained by KEY-AD, power supply is connected, and Vout, Voltage stabilizing module, MCU have voltage, is started to work；MCU
Detect that touch-switch SW1 is pressed by detection module, second switch module is connected output signal PW-ON, discharges at this time
Touch-switch SW1, its effect are replaced by second switch module, and VS point voltage ratio at this time is pressed slightly higher when touch-switch SW1
A bit, but still the conducting of first switch module can be maintained, the above-mentioned course of work is the completion in a flash pressed in touch-switch
's.When user presses the touch-switch SW1 again, VS point voltage pulls down to 0V once more, has been in the MCU of working condition
The signal of detection module is obtained by KEY-AD, by the instruction of MCU inside programming, output signal PW-ON closes second switch
Module is disconnected, and discharges touch-switch SW1 at this time, and VS point voltage is essentially pulled up to Vin voltage, and first switch module is disconnected
It opens, cuts off all power supplys, circuit returns to original state, and realizes standby zero-power-consumption.
Example IV
The utility model embodiment provides a kind of ON-OFF control circuit, as shown in figure 4, in the circuit base of embodiment three
On, detection module further includes the first electricity of other end ground connection on the connecting line that one end is connected between diode D1 anode and MCU
Hold C1.
In the embodiment, first capacitor C1 is used to filter out interference signal, the noise signal of detection module, keeps detection module defeated
Signal voltage out is more stable and reliable.Detection module can further include one end and be connected to diode D1 anode and the first electricity
Hold on the connecting line between C1, the other end connects the second resistance R2 of MCU, anti-interference for realizing signal.
Embodiment five
The utility model embodiment provides a kind of ON-OFF control circuit, as shown in figure 5, in the circuit base of embodiment one
On, second switch module U3 include control terminal connect the MCU, output end ground connection second switch S2 and be connected on described second
The 3rd resistor R3 of switch S2 input terminal and first switch module U2 control terminal.
In the embodiment, second switch S2 is the switching device controlled by MCU, it is preferred to use triode or metal-oxide-semiconductor
(MOSFET), for the control signal according to MCU come closing or opening, so that the working condition of first switch module is controlled, the
Three resistance R3 are anti-interference for realizing signal.
Embodiment six
The utility model embodiment provides a kind of ON-OFF control circuit, as shown in fig. 6, in the circuit base of embodiment one
On, first switch module includes first switch S1, the 4th resistance R4 and the 5th resistance R5, first switch S1 input terminal connection electricity
Source, output end connect MCU, and the 4th resistance R4 is connected to the connection between the control terminal of first switch S1 and second switch module U3
On line, the 5th one end resistance R5 connects the input terminal of first switch S1, and the other end is connected to the control terminal of first switch S1 and the
On connecting line between four resistance R4.
In the embodiment, first switch S1 is the switching device controlled by MCU, it is preferred to use triode or metal-oxide-semiconductor, first
Switch S1 is controlled for being opened or closed according to the control signal of MCU by second switch module；4th resistance R4 and the 5th resistance
R5 is pull-up resistor；When user presses touch-switch SW1, the MCU obtains detection module U4 detection by KEY-AD and touches out
SW1 voltage signal obtained is closed, control instruction is generated to the closure of second switch module according to the signal, and then control first
Switch S1 closure, power supply are connected, and are started to work；When user presses touch-switch SW1 again, the MCU is obtained by KEY-AD
Detection module U4 detects touch-switch SW1 voltage signal obtained, generates control instruction according to the signal and gives second switch mould
The disconnection of block, and then control first switch S1 and disconnect, power supply disconnects, into standby mode, do not consume any electric current under this state,
Realize standby zero-power-consumption.
Embodiment seven
The utility model embodiment provides a kind of ON-OFF control circuit, as shown in fig. 7, in the circuit base of embodiment three
On, the circuit further include:
One end is connected on the connecting line between the output end of first switch module U2 and the input terminal of Voltage stabilizing module U1, separately
Second capacitor C2 of one end ground connection.
Interference signal, noise letter in the embodiment, in input signal of the second capacitor C2 for filtering out Voltage stabilizing module U1
Number, keep the voltage stabilization of the input signal of Voltage stabilizing module U1 reliable.
Embodiment eight
The utility model embodiment provides a kind of ON-OFF control circuit, as shown in figure 8, in the circuit base of embodiment seven
On, the circuit further include:
One end is connected on the connecting line between the output end and MCU of the Voltage stabilizing module U1, the third of other end ground connection
Capacitor C3.
Interference signal, noise letter in the embodiment, in output signal of the third capacitor C3 for filtering out Voltage stabilizing module U1
Number, keep the voltage stabilization of the output signal of Voltage stabilizing module U1 reliable, and be transmitted to MCU.
Simultaneously, can also by example IV, embodiment five, embodiment six in conjunction with the technical solution of embodiment eight,
Form a kind of ON-OFF control circuit shown in Fig. 9.
Embodiment nine
The utility model embodiment provides a kind of ON-OFF control circuit, and on the basis of example 1, touch-switch has
Several, several touch-switch are in parallel, and connect with first switch module, detection module, second switch module.
It in the embodiment, is realized by parallel connection and extends multiple touch-switch, realize the touch-switch operation of different function.
Embodiment ten
The utility model embodiment provides a kind of electric tool, including above-mentioned ON-OFF control circuit.
In the embodiment, the anode of electric tool is connected to the Vin point of ON-OFF control circuit, and battery cathode is connected to
GND point.The load motor of electric tool or other heating equipments are worked by MCU control on-off, are believed by the detection of detection module
The touch-switch of number identification electric tool power supply, when ON-OFF control circuit does not have any movement, first switch module is to disconnect
, Vout and MCU do not work without power supply.When user presses the touch-switch SW1 of electric tool power supply for the first time, and
There are no when release, the conducting of first switch module is connected.Vout, Voltage stabilizing module, MCU have voltage, start to work.MCU at this time
It detects that touch-switch SW1 is pressed by detection module, touch-switch is connected, output signal PW-ON makes second switch module
Then conducting discharges touch-switch SW1, disconnect touch-switch, the voltage ratio of VS point is pressed slightly higher one when touch-switch SW1 at this time
Point, but still the conducting of first switch module is maintained, the above process is a flash pressed in the touch-switch SW1 of electric tool power supply
Between complete.When touch-switch SW1 is pressed again, VS point voltage pulls down to 0V once more, has been in the MCU inspection of working condition
It measures touch-switch SW1 to be pressed, by the instruction of MCU inside programming, output signal PW-ON breaks second switch module S2
It opens, discharges touch-switch SW1, VS voltage is essentially pulled up to Vin, and first switch module disconnects, and cuts off all power supplys, circuit is restored to
Original state, i.e. electric tool restore standby mode, realize electric tool standby zero-power-consumption.
To sum up, the utility model embodiment realizes that the touch-switch of user operates by touch-switch, passes through detection module
Voltage signal variation when on-off is detected, and is supplied to MCU and carries out touch-switch identification；MCU receives the signal of detection module, leads to
Logical process output control signal is crossed to control the work of other modules in second switch module or circuit；First switch module root
Control signal cut and connection power supply according to MCU；Second switch module controls first switch module work according to the control signal of MCU
Make.The circuit realizes that power supply is opened/closed to MCU autonomous control, realizes under shutdown or standby mode, does not consume any electric current,
Reach the zero-power requirement realized under shutdown or standby mode.Specifically, it is provided by Voltage stabilizing module for MCU and detection module
Stable operating voltage.By diode-isolated detectable voltage signals, keep signal more acurrate；It is provided by first resistor for MCU
One stable detectable voltage signals.Interference signal, the noise signal that detection module is filtered out by first capacitor, make detection module
The signal voltage of output is more stable and reliable.The working condition that first switch module is controlled by second switch, passes through 3rd resistor
Realize that signal is anti-interference.Interference signal, the noise signal in the input signal of Voltage stabilizing module are filtered out by the second capacitor, make pressure stabilizing
The voltage stabilization of the input signal of module is reliable.Filtered out by third capacitor interference signal in the output signal of Voltage stabilizing module,
Noise signal keeps the voltage stabilization of the output signal of Voltage stabilizing module reliable, and is transmitted to the MCU.Extension is realized by parallel connection
Multiple touch-switch are, it can be achieved that the touch-switch of different function operates.A kind of electric tool provided by the embodiment of the utility model,
The anode of electric tool is connected to the Vin point of ON-OFF control circuit, and battery cathode is connected to GND point.Electric tool is born
It carries motor or other heating equipments to be worked by MCU control on-off, passes through the detection signal identification electric tool of detection module
The touch-switch of power supply, when ON-OFF control circuit does not have any movement, first switch module is to disconnect, Vout and described
MCU without power supply, does not work.When user presses the touch-switch of electric tool power supply for the first time and discharges not yet,
The conducting connection of first switch module, Vout, Voltage stabilizing module, MCU have voltage, start to work, and MCU is examined by detection module at this time
It measures touch-switch SW1 to be pressed, second switch module is connected, discharge touch-switch SW1 at this time；When touch-switch SW1 again
Secondary VS point voltage pulls down to 0V once more, and the MCU for being in working condition detects that touch-switch SW1 is pressed when pressing, will
Second switch module S2 is disconnected, and discharges touch-switch SW1, and VS voltage is essentially pulled up to Vin, and first switch module disconnects, and cuts off institute
There is power supply, circuit returns to original state, i.e., electric tool restores standby mode, realizes electric tool standby zero-power-consumption.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (10)
1. a kind of ON-OFF control circuit, which is characterized in that the circuit includes:
It is arranged between MCU and power supply, the first switch module connected between MCU and power supply described on or off；
It is arranged between the MCU and first switch module, controls the second switch of the first switch module on or off
Module；
The touch-switch of on-off information is issued to the circuit；
Detect the detection module that the MCU is fed back to after the touch-switch on-off information.
2. ON-OFF control circuit as described in claim 1, which is characterized in that between the MCU and the first switch module
Also it is in series with Voltage stabilizing module U1, the input terminal of the Voltage stabilizing module connects the first switch module, described in output end connection
MCU。
3. ON-OFF control circuit as claimed in claim 2, which is characterized in that the detection module includes:
Diode positive to be connect with the MCU, that cathode is connect with the touch-switch；
One end connects the output end of the Voltage stabilizing module, and the other end is connected to the company between the diode cathode and the MCU
First resistor in wiring.
4. ON-OFF control circuit as claimed in claim 3, which is characterized in that the detection module further includes that one end is connected to institute
It states on the connecting line between diode cathode and the MCU, the first capacitor of other end ground connection.
5. ON-OFF control circuit as described in claim 1, which is characterized in that the second switch module includes control terminal connection
The second switch and be connected on the second switch input terminal and first switch module control that the MCU, output end are grounded
The 3rd resistor at end.
6. ON-OFF control circuit as described in claim 1, which is characterized in that the first switch module include first switch,
4th resistance and the 5th resistance, the first switch input terminal connect power supply, and output end connects the MCU, the 4th resistance
It is connected on the connecting line between the control terminal of the first switch and second switch module, described 5th resistance one end connects institute
The input terminal of first switch is stated, the other end is connected on the connecting line between the control terminal of the first switch and the 4th resistance.
7. ON-OFF control circuit as claimed in claim 3, which is characterized in that the circuit further include:
One end is connected on the connecting line between the output end of the first switch module and the input terminal of the Voltage stabilizing module, separately
Second capacitor of one end ground connection.
8. ON-OFF control circuit as claimed in claim 7, which is characterized in that the circuit further include:
One end is connected on the connecting line between the output end of the Voltage stabilizing module and the MCU, the third electricity of other end ground connection
Hold.
9. ON-OFF control circuit as described in claim 1, which is characterized in that the touch-switch has several, several institutes
State touch-switch parallel connection.
10. a kind of electric tool, which is characterized in that including the described in any item ON-OFF control circuits of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821262301.1U CN208547824U (en) | 2018-08-06 | 2018-08-06 | A kind of ON-OFF control circuit and electric tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821262301.1U CN208547824U (en) | 2018-08-06 | 2018-08-06 | A kind of ON-OFF control circuit and electric tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208547824U true CN208547824U (en) | 2019-02-26 |
Family
ID=65426100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201821262301.1U Active CN208547824U (en) | 2018-08-06 | 2018-08-06 | A kind of ON-OFF control circuit and electric tool |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113568360A (en) * | 2021-09-24 | 2021-10-29 | 深圳市鼎阳科技股份有限公司 | Power supply control circuit and handheld device |
-
2018
- 2018-08-06 CN CN201821262301.1U patent/CN208547824U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113568360A (en) * | 2021-09-24 | 2021-10-29 | 深圳市鼎阳科技股份有限公司 | Power supply control circuit and handheld device |
| CN113568360B (en) * | 2021-09-24 | 2021-11-30 | 深圳市鼎阳科技股份有限公司 | Power supply control circuit and handheld device |
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