CN211264190U - Circuit with power supply capable of being controlled to be switched on and switched off - Google Patents
Circuit with power supply capable of being controlled to be switched on and switched off Download PDFInfo
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- CN211264190U CN211264190U CN201921755344.8U CN201921755344U CN211264190U CN 211264190 U CN211264190 U CN 211264190U CN 201921755344 U CN201921755344 U CN 201921755344U CN 211264190 U CN211264190 U CN 211264190U
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Abstract
The utility model provides a controllable circuit of power on-off, this circuit include key switch input interface, input processing module 1, input processing module 2, processing chip, main power supply control module, power 1 input interface, power 2 input interface and 3 input interfaces of power. The utility model provides a circuit design principle is reliable, and simple structure can solve portable equipment and still need give the problem of on-off control chip power supply when shutting down, has prolonged the standby life-span of portable equipment power, has very extensive application prospect.
Description
Technical Field
The utility model belongs to the electronic design field, concretely relates to controllable circuit of power break-make electricity.
Background
Almost all electronic products on the market have a power on/off function, the power on/off operation is actually a process of powering on and powering off a power supply, and the power on/off function can be realized by opening and closing a mechanical switch or special circuit control.
For portable products, batteries are designed in the products, so that the products can still normally work for a period of time under the condition that no external power supply exists, and the characteristic of portability is embodied. In addition, the good portable product needs to consider that the loss of the battery power is as small as possible when the portable product is in a power-off state, and the portable product can still be normally used under the condition that no external power supply is connected even after being powered off for a long time.
The power on-off of mechanical switch belongs to physics hardware formula break-off, can not form the return circuit in the circuit during outage, just can not have the electric quantity loss, can reach the effect of complete outage, only need toggle switch to the user can realize the switching on and shutting down operation of product, but many products are in the different considerations of pleasing to the eye or design theory, can not use mechanical switch, but adopt a key switch to realize the switching on and shutting down function, feel more comfortable when making user operation product like this. The key switch is actually a light touch key, and a product can be started or shut down after a user presses a specified time, in the process, a processing chip is usually needed to be used for collecting information of the key and marking a power on/off state to control the power supply circuit to be powered on or off, so that the processing chip needs to keep the power on state and inquire information of the key all the time, and under the condition that the product is shut down, the design inevitably increases the loss of electric quantity.
Therefore, it is desirable to provide a switch circuit that can solve the power consumption problem of the processing chip in the power-off state.
SUMMERY OF THE UTILITY MODEL
Utility model purpose:
an object of the utility model is to provide a control circuit of break-make electricity to solve the problem that prior art exists
The technical scheme is as follows:
the utility model provides a controllable circuit of power on-off, this circuit include key switch input interface, input processing module 1, input processing module 2, processing chip, main power supply control module, power 1 input interface, power 2 input interface and 3 input interfaces of power.
Preferably, the input processing module 1 includes a key signal input terminal 1, a power supply 1 input terminal, and a control signal 1 output terminal.
Preferably, the input processing module 2 comprises a key signal input end 2, a power supply 2 input end, a control signal 2 output end,
The processing chip comprises a key state input end, a power supply 4 input end and a main control signal 2 output end.
The main power supply control module comprises a main control signal 1 input end, a power supply 3 input end, a main control signal 2 input end and a main control power supply output end.
The key switch input interface is simultaneously connected with the key signal input end 1 of the input processing module 1 and the key signal input end 2 of the input processing module 2, and signals transmitted between the key signal input end 1 and the key signal input end 2 are called key signals.
The input interface of the power supply 1 is connected with the input end of the power supply 1 of the input processing module 1.
And the input interface of the power supply 2 is connected with the input end of the power supply 2 of the input processing module 2.
And the input interface of the power supply 3 is connected with the input end of the power supply 3 of the main power supply control module.
The control signal 1 output end of the input processing module 1 is connected with the main control signal 1 input end of the main power supply control module, and signals transmitted between the control signal 1 output end and the main control signal 1 input end are called as main control signals 1.
The control signal 2 output end of the input processing module 2 is connected with the key state input end of the processing chip, and signals transmitted between the control signal 2 output end and the key state input end are called key state signals.
The output end of the main control signal 2 of the processing chip is connected with the input end of the main control signal 2 of the main power supply control module, and signals transmitted between the output end of the main control signal 2 and the input end of the main control signal 2 are called as main control signals 2.
The input end of the power supply 4 of the processing chip is connected with the output end of the main control power supply of the main power supply control module.
Preferably, the processing chip comprises a key state input end, a power supply 4 input end and a main control signal 2 output end.
Preferably, the processing chip is a programmable chip or a programmable chip set;
the processing chip is used for recording the on-off state.
Preferably, the circuit further comprises a power supply;
the power supply supplies power to the input end of the power supply 1, the input end of the power supply 2 and the input end of the power supply 3;
the power supply is a direct current power supply;
the power supply can supply power with different voltages to the power input end.
Preferably, the key switch input interface can be arranged in a way that one or more light touch keys are connected in series or in parallel.
Preferably, one end of the key switch input interface is required to be grounded.
Preferably, the main power supply port of the programmable chip is connected with the input end of the power supply 4.
Preferably, the output end of the control signal 1 of the input processing module 1 and the key signal input end 1 have a unidirectional diode characteristic, the output end of the control signal 1 is equivalent to be located at the positive end of the unidirectional diode, and the key signal input end 1 is equivalent to be located at the negative end of the unidirectional diode.
Preferably, a logical and relationship exists between the input end of the main control signal 1 and the input end of the main control signal 2 of the main power supply control module.
Preferably, the input end of the power supply 1, the input end of the power supply 2 and the input end of the power supply 3 are input ports of a direct current power supply, and the direct current power supply may be power supplies with different voltages, which are hereinafter collectively referred to as a power supply.
Preferably, the output of the main control power supply output end is a direct current power supply, and the power supply voltage can be greater than, equal to or less than that of a power supply, which is hereinafter referred to as a controlled power supply.
Preferably, the output end of the main control power supply of the main power supply control module does not output the controlled power supply when the input end of the main control signal 1 and the input end of the main control signal 2 are simultaneously in the invalid level logic, that is, the and logic is satisfied.
Preferably, the main power control module should have the actual and logic.
Has the advantages that:
the utility model provides a circuit design principle is reliable, and simple structure can solve portable equipment and still need give the problem of on-off control chip power supply when shutting down, has prolonged the standby life-span of portable equipment power, has very extensive application prospect.
Drawings
Fig. 1 is a schematic block diagram of a circuit provided by the present invention;
fig. 2 is a circuit diagram of an embodiment provided by the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings:
fig. 1 is a schematic block diagram of a circuit provided by the present invention;
a power on-off circuit comprises a key switch input interface, an input processing module 1, an input processing module 2, a processing chip, a main power supply control module, a power supply 1 input interface, a power supply 2 input interface and a power supply 3 input interface,
the input processing module 1 comprises a key signal input end 1, a power supply 1 input end and a control signal 1 output end.
The input processing module 2 comprises a key signal input end 2, a power supply 2 input end and a control signal 2 output end.
The processing chip comprises a key state input end, a power supply 4 input end and a main control signal 2 output end.
The main power supply control module comprises a main control signal 1 input end, a power supply 3 input end, a main control signal 2 input end and a main control power supply output end.
The key switch input interface is simultaneously connected with the key signal input end 1 of the input processing module 1 and the key signal input end 2 of the input processing module 2, and signals transmitted between the input processing module 1 and the key signal input end 2 are called key signals.
The input interface of the power supply 1 is connected with the input end of the power supply 1 of the input processing module 1.
The input interface of the power supply 2 is connected with the input end of the power supply 2 of the input processing module 2.
And the input interface of the power supply 3 is connected with the input end of the power supply 3 of the main power supply control module.
The control signal 1 output end of the input processing module 1 is connected with the main control signal 1 input end of the main power supply control module, and signals transmitted between the control signal 1 output end and the main control signal 1 input end are called as main control signals 1.
The control signal 2 output end of the input processing module 2 is connected with the key state input end of the processing chip, and signals transmitted between the control signal 2 output end and the key state input end are called key state signals.
The output end of the main control signal 2 of the processing chip is connected with the input end of the main control signal 2 of the main power supply control module, and signals transmitted between the output end of the main control signal 2 and the input end of the main control signal 2 are called as main control signals 2.
The input end of a power supply 4 of the processing chip is connected with the output end of a main control power supply of the main power supply control module.
The key switch input interface is equivalent to one or more light touch keys which are connected in series or in parallel.
One end of the touch key is required to be grounded.
The processing chip is a chip or a chip group with a programmable function and can record the on-off state, a power circuit can be configured in the processing chip to supply power to the chip, and the total power input port is the power input port 4.
The output end of a control signal 1 of the input processing module 1 and the key signal input end 1 have the characteristic of a one-way diode, the output end of the control signal 1 is equivalent to be positioned at the positive end of the one-way diode, and the key signal input end 1 is equivalent to be positioned at the negative end of the one-way diode.
The input processing module 1 and the input processing module 2 have the same internal structure.
The main control signal 1 input end and the main control signal 2 input end of the main power supply control module have a logical AND relationship.
The input end of the power supply 1, the input end of the power supply 2 and the input end of the power supply 3 are input ports of a direct current power supply, and the direct current power supply can be power supplies with different voltages and is hereinafter referred to as a power supply.
The output of the main control power supply output end is a direct current power supply, and the power supply voltage can be larger than, equal to or smaller than a power supply, and is hereinafter referred to as a controlled power supply.
The output end of the main control power supply of the main power supply control module does not output the controlled power supply when the input end of the main control signal 1 and the input end of the main control signal 2 are invalid level logic at the same time, namely, the AND gate logic is satisfied.
The main power control module should have the actual and logic.
In the first embodiment, the first step is,
as shown in fig. 2, it is a circuit diagram of the first embodiment of the present invention.
The embodiment provides the power on/off circuit which can control whether the processing chip is powered or not according to the light touch key;
the power-on and power-off control circuit comprises a key switch input interface, an input processing module 1, an input processing module 2, a processing chip U2 and a main power supply control module.
The key switch input interface comprises a touch key S1.
The input processing module 1 comprises a resistor R3 and a diode D2.
The input processing module 2 comprises a resistor R1 and a diode D1.
The main power supply control module comprises a resistor R2, a resistor R4, an AND gate U1 and a P-MOS transistor Q1.
The processing chip U2 includes a detection terminal 1, a control terminal 2 and a power supply terminal 3.
The 2 pin of the light touch key S1 is connected with GND (ground); the 1 pin of the light touch key S1 is connected with the 2 pin of the diode D2 and the 2 pin of the diode D1;
a pin 1 of the diode D1 is connected with a pin 2 of the resistor R1 and a detection end 1 of the processing chip;
a pin 1 of the resistor R1 is connected with a +5V power supply;
a pin 1 of the diode D2 is connected with a pin 2 of the resistor R3 and a pin 2 of the AND gate;
a pin 1 of the resistor R3 is connected with a +5V power supply;
a pin 1 of the AND gate U1 is connected with a pin 2 of the resistor R2 and a control end 2 of the processing chip U2;
a pin 1 of the resistor R2 is connected with a +5V power supply;
the 3 pins of the AND gate U1 are connected with the 1 pin of the resistor R4 and the G pin of the P-MOS tube;
a pin 2 of the resistor R4 is connected with a +5V power supply and a pin D of the P-MOS tube;
the S pin of the P-MOS tube is connected with the power supply end of the processing chip U2;
in this embodiment, the main control chip in the processing chip U2 is a programmable chip and can record the on/off state.
In this embodiment, the active levels of the main control signal 1 and the main control signal 2 are both low levels.
In this embodiment, the power supply adopts +5V power input.
In this embodiment, the main power supply control module should include at least one and gate.
In this embodiment, the and gate U1 adopts a +5V power input.
In this embodiment, the two input ports of the and gate U1 both need to have pull-up resistors, i.e., the resistor R2 and the resistor R3.
In this embodiment, the detection terminal 1 needs to have a pull-up resistor, i.e., a resistor R1.
In this embodiment, the main power supply control module should include at least one P-MOS transistor.
The working principle of the embodiment is as follows:
in the power-on process, after the light touch key S1 is pressed, the pin 2 of the and gate U1 will be switched into the low level logic, the pin 3 of the and gate U1 will output the low level, at this time, the pin S of the P-MOS transistor Q1 will output +5V to the processing chip U2, the processing chip U2 starts to operate due to power-on, after that, the processing chip U2 will judge whether the detection terminal 1 is the low level logic or not by means of timing query or the like, at this time, the detection terminal 1 is the low level logic, the processing chip U2 judges that the light touch key S1 is pressed down to be valid, and output the low level at the control terminal 2, at this time, the and gate U1 still outputs the low level, the processing chip U2 is still powered, when the light touch key S1 is released, the detection terminal 1 of the processing chip U2 will be changed into the high level logic, but the level of the control terminal 2 of the processing chip U2 will still remain as the low level, the pin 2 of the and gate U1 will also, the S pin of the corresponding P-MOS tube still outputs +5V power to the processing chip U2, and the whole power-on process is completed.
In the power-off process, after the light touch key S1 is pressed, the pin 2 of the AND gate U1 is connected to low level logic, the processing chip U2 is in a working state all the time due to power-on, the processing chip U2 judges whether the detection end 1 is low level logic or not through means such as timing inquiry and the like, at the moment, the detection end 1 is low level logic, the processing chip U2 judges that the light touch key S1 is effectively pressed and outputs high level at the control end 2, at the moment, the AND gate U1 still outputs low level, the processing chip U2 is still powered, when the light touch key S1 is loosened, the pin 2 of the AND gate U1 is changed to high level logic, at the moment, the pin 3 of the AND gate U1 outputs high level, and the corresponding pin S of the P-MOS tube does not output +5V power to the processing chip U2 any more, so that the whole power-off process.
The user can provide power of different voltages in the input processing module 1, the input processing module 2 and the main power supply control module.
The user can suitably adjust the quantity of dabbing the button as required to design different combination button logics and realize the power-on and power-off function of circuit.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (12)
1. A circuit with a power supply capable of being controlled to be switched on and off is characterized by comprising a key switch input interface, an input processing module 1, an input processing module 2, a processing chip, a main power supply control module, a power supply 1 input interface, a power supply 2 input interface and a power supply 3 input interface;
the key switch input interface is connected with the input processing module 1 and the processing module 2 respectively, and is used for providing key signals for the input processing module 1 and the processing module 2;
the input processing module 1 is connected with the main power supply control module and used for processing the received key signals and transmitting the processed main control signals 1 to the main power supply control module;
the input processing module 2 is connected with the processing chip and is used for processing the received key signal and transmitting the processed key state signal to the processing chip;
the processing chip is connected with the main power supply control module and used for processing the obtained key state signal and transmitting a main control signal 2 obtained by processing to the main power supply control module;
the input interface of the power supply 1 supplies power to the input processing module 1;
the input interface of the power supply 2 supplies power to the input processing module 2;
and the input interface of the power supply 3 supplies power for the main power supply control module.
2. The circuit according to claim 1, wherein the input processing module 1 comprises a key signal input terminal 1, a power supply 1 input terminal and a control signal 1 output terminal.
3. A circuit with controllable power on and off according to claim 1, wherein said input processing module 2 comprises a key signal input 2, a power supply 2 input and a control signal 2 output.
4. A circuit with power on/off controllable according to claim 1, wherein the processing chip comprises a key status input terminal, a power supply 4 input terminal and a main control signal 2 output terminal.
5. The circuit with controllable power on and off according to claim 1, wherein the processing chip is a programmable chip or a programmable chip set;
the processing chip is used for recording the on-off state.
6. The circuit of claim 1, further comprising a power supply;
the power supply supplies power to the input end of the power supply 1, the input end of the power supply 2 and the input end of the power supply 3;
the power supply is a direct current power supply;
the power supply may supply power of different voltages to the power supply 1 input, the power supply 2 input and the power supply 3 input.
7. The circuit according to claim 1, wherein the keyswitch input interface is configured as one or more tact keys connected in series or in parallel.
8. The circuit of claim 7, wherein the keyswitch input interface requires ground at one end.
9. A circuit with controllable power supply on-off according to claim 5, characterized in that the main power supply port of the programmable chip is connected with the input end of a power supply 4.
10. The circuit according to claim 1, wherein the control signal 1 output terminal of the input processing module 1 and the key signal input terminal 1 have a unidirectional diode characteristic, the control signal 1 output terminal is equivalent to be located at a positive terminal of the unidirectional diode, and the key signal input terminal 1 is equivalent to be located at a negative terminal of the unidirectional diode.
11. The circuit of claim 1, wherein the master signal 1 input and the master signal 2 input of the master power control module are in a logical and relationship.
12. The circuit with controllable power on and off as claimed in claim 1, wherein the main power output of the main power control module does not output the controlled power when the main signal 1 input and the main signal 2 input are both inactive level logic, that is, the and logic is satisfied.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921755344.8U CN211264190U (en) | 2019-10-16 | 2019-10-16 | Circuit with power supply capable of being controlled to be switched on and switched off |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921755344.8U CN211264190U (en) | 2019-10-16 | 2019-10-16 | Circuit with power supply capable of being controlled to be switched on and switched off |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211264190U true CN211264190U (en) | 2020-08-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921755344.8U Active CN211264190U (en) | 2019-10-16 | 2019-10-16 | Circuit with power supply capable of being controlled to be switched on and switched off |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211264190U (en) |
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2019
- 2019-10-16 CN CN201921755344.8U patent/CN211264190U/en active Active
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