CN113517884A - Equipment on-off control circuit - Google Patents
Equipment on-off control circuit Download PDFInfo
- Publication number
- CN113517884A CN113517884A CN202110701048.5A CN202110701048A CN113517884A CN 113517884 A CN113517884 A CN 113517884A CN 202110701048 A CN202110701048 A CN 202110701048A CN 113517884 A CN113517884 A CN 113517884A
- Authority
- CN
- China
- Prior art keywords
- control
- signal
- power
- resistor
- control signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
- H03K17/687—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/965—Switches controlled by moving an element forming part of the switch
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
- H03K2217/0036—Means reducing energy consumption
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
- H03K2217/94—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
- H03K2217/94042—Means for reducing energy consumption
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Power Sources (AREA)
Abstract
The application relates to the field of control circuits, in particular to a device startup and shutdown control circuit. The circuit comprises a control key, a first control module, a second control module and a microprocessor. The control of starting or shutting down the external equipment is realized by controlling the key signal generated by the key. The circuit provided by the application solves the problem that the power consumption of the control process of the on-off device in the prior art is high, so that energy is wasted.
Description
Technical Field
The application relates to the field of control circuits, in particular to a device startup and shutdown control circuit.
Background
At present, various electronic devices are increasingly used in the production and life of people. How to control the on/off of the electronic equipment is an important problem in the application process of the electronic equipment.
In the prior art, the on/off control of the electronic equipment mainly has two modes, one mode is that a toggle switch is used, and after the toggle switch is toggled to an on position, the electronic equipment is always kept in an on state; in another example, a simple circuit mainly including a hall switch and a microprocessor (MCU for short) is used, and the microprocessor detects the operation of the hall switch and then powers on and off the electronic device.
However, the toggle switch can be toggled only by the user to complete the power on or off of the electronic device. When the toggle switch is used for starting up, the power consumption is high, and if the electronic equipment is kept in a starting-up state but a user does not operate in time, the energy waste can be further caused. Meanwhile, the toggle switch cannot control the on-off of the electronic equipment in special environments such as underwater and the like.
In addition, due to the combination of the hall switch and the MCU, even if the electronic device is in a power-off state, the hall switch, the MCU and related circuits still need to work all the time, which increases the power consumption of the system and causes resource waste.
Disclosure of Invention
The application provides a device on-off control circuit for solve the high consumption of the device on-off control process among the prior art, lead to the extravagant problem of energy.
In a first aspect, an embodiment of the present application provides an apparatus power on/off control circuit, including: the device comprises a control key, a first control module, a second control module and a microprocessor; the first control module and the second control module are respectively connected with an external direct-current power supply; the control key is used for generating a key signal and transmitting the key signal to the first control module, wherein the key signal is a signal for maintaining a preset duration; the first control module is used for generating a first control signal and a second control signal according to the key signal and the external direct-current power supply and transmitting the first control signal and the second control signal to the second control module; the second control module is configured to transmit the first control signal to the microprocessor, and generate an apparatus power supply and a processor power supply according to the second control signal and the external dc power supply, where the apparatus power supply supplies power to an external apparatus, the processor power supply supplies power to the microprocessor, and the external apparatus is an apparatus that needs a switch control service; the microprocessor is used for generating a power-on control signal or a power-off control signal according to the first control signal after the power supply of the processor supplies power to the microprocessor, and transmitting the power-on control signal or the power-off control signal to the second control module; the power-on control signal is used for controlling the external device to be kept powered on after the key signal maintains a preset duration, and the power-off control signal is used for controlling the external device to be powered off.
Optionally, the second control module includes a switch control submodule, a power supply control submodule and a processor control submodule; the switch control submodule is used for generating a first intermediate signal according to the second control signal and transmitting the first intermediate signal to the power supply control submodule; the power supply control submodule is used for generating the equipment power supply and the processor power supply according to the first intermediate signal and the external direct-current power supply, wherein the processor power supply is also used for supplying power to the switch control submodule; the processor control submodule is configured to transmit the first control signal to the microprocessor, acquire the power-on control signal or the power-off control signal transmitted by the microprocessor, and transmit the power-on control signal or the power-off control signal to the switch control submodule.
Optionally, the control key is a point-touch key, a first end of the point-touch key is grounded, a second end of the point-touch key is connected with the first control module, and the key signal is output through the second end of the point-touch key; the key signal is a low level signal.
Optionally, the first control module includes a second resistor, a fourth resistor, a fifth resistor, a third triode, and a third capacitor; the first end of the second resistor is connected with the external direct-current power supply, and the second end of the second resistor is connected with the grid electrode of the third triode; a first end of the fourth resistor is connected with the external direct-current power supply, and a second end of the fourth resistor is connected with a source electrode of the third triode; the first end of the fifth resistor is connected with the second end of the second resistor, the first control signal is output through the first end of the fifth resistor, the second end of the fifth resistor is connected with the control key, and the key signal is input through the second end of the fifth resistor; the first end of the third capacitor is connected with the grid electrode of the third triode, and the second end of the third capacitor is grounded; and the drain electrode of the third triode is connected with the second control module, and the second control signal is output through the drain electrode of the third triode.
Optionally, the third transistor is a P-type metal oxide semiconductor field effect transistor.
Optionally, the switch control submodule includes a sixth resistor, a fourteenth resistor, and a fourth transistor; the first end of the sixth resistor is connected with the first control module and the processor control submodule, the second control signal is input through the first end of the sixth resistor, the power-on control signal or the power-off control signal is input through the first end of the sixth resistor, and the second end of the sixth resistor is connected with the source electrode of the fourth triode; a grid electrode of the fourth triode is connected with the first end of the sixth resistor, a source electrode of the fourth triode is grounded, and a drain electrode of the fourth triode is connected with the second end of the fourteenth resistor; the first end of the fourteenth resistor is connected with the power supply control sub-power supply, and the first intermediate signal is output through the first end of the fourteenth resistor.
Optionally, the fourth triode is an N-type metal oxide semiconductor field effect transistor.
Optionally, the power control submodule comprises a fifty-th resistor, a ninety-seventh capacitor, a seventh triode and a voltage stabilizing circuit; a first end of the fifty-th resistor is connected with the external direct-current power supply, and a second end of the fifty-th resistor is connected with the grid electrode of the seventh triode; a gate of the seventh triode is connected with the switch control submodule, the first intermediate signal is input through the gate of the seventh triode, a source of the seventh triode is connected with a first end of the fifty-th resistor, and a drain of the seventh triode is connected with a first end of the ninety-seventh capacitor; a first end of the ninety-seventh capacitor is connected with an input end of the voltage stabilizing circuit, and a second end of the ninety-seventh capacitor is connected with a second end of the fifty-fifth resistor; the input end of the voltage stabilizing circuit is connected with the drain electrode of the seventh triode, the first output end of the voltage stabilizing circuit is connected with the external equipment, the equipment power supply is output through the first output end of the voltage stabilizing circuit, the second output end of the voltage stabilizing circuit is connected with the power input end of the microprocessor, and the processor power supply is output through the second output end of the voltage stabilizing circuit.
Optionally, the seventh triode is a P-type metal oxide semiconductor field effect transistor.
Optionally, the voltage stabilizing circuit is a low dropout linear regulator; or, the voltage stabilizing circuit is a direct current voltage converter.
Optionally, the processor control sub-module comprises a sixty-second resistor, a forty-fifth capacitor, a third diode, and a sixth diode; the first end of the sixty-second resistor is connected with the power supply control submodule and is input into the processor power supply through the first end of the sixty-second resistor, and the second end of the sixty-second resistor is connected with the first end of the forty-fifth capacitor; a first end of the forty-fifth capacitor is connected with a signal input end of the microprocessor, and a second end of the forty-fifth capacitor is grounded; the cathode of the third diode is connected with the first control module, the first control signal is input through the cathode of the third diode, the anode of the third diode is connected with the first end of the forty-fifth capacitor, and the first control signal is output through the anode of the third diode; the cathode of the sixth diode is connected with the switch control submodule, the start-up control signal or the shutdown control signal is output through the cathode of the sixth diode, the anode of the sixth diode is connected with the microprocessor, and the start-up control signal or the shutdown control signal is input through the anode of the sixth diode.
Optionally, the third diode is a small-signal schottky diode.
Optionally, the sixth diode is a small-signal schottky diode.
Optionally, the circuit further comprises a battery; the battery is used for providing the external direct current power supply.
Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages: the circuit provided by the embodiment of the application comprises a control key, a first control module, a second control module and a microprocessor. The control key comprises a first control module, a second control module, a device power supply, a processor power supply and a microprocessor, wherein a key signal provided by the control key is transmitted to the first control module, the first control module generates a first control signal and a second control signal according to the key signal and transmits the first control signal and the second control signal to the second control module, and the second control module generates a device power supply and a processor power supply according to the second control signal and an external direct-current power supply and transmits the first control signal to the microprocessor. And when the processor power supply supplies power to the microprocessor, the microprocessor generates a starting control signal or a shutdown control signal according to the first control signal and returns the generated starting control signal or the shutdown control signal to the second control module.
In the process, indirect management of the power supply of the equipment is realized, and particularly, the existence of the first control module and the second control module realizes the isolation of the key signal from the first control signal and the second control signal. The key signal is a signal lasting for a preset duration, that is, the control key is turned off after being turned on for the preset duration, and the key signal disappears. However, since the microprocessor has already generated the power-on control signal or the power-off control signal and transmitted the power-on control signal or the power-off control signal to the second control module, the power supply of the device is controlled by the microprocessor at this time, and when the key signal disappears, the first control module has no current signal to pass through. If the microprocessor generates a starting control signal, the power supply of the equipment can be ensured to continuously supply power to the external equipment, and the starting state of the external equipment is maintained; if the microprocessor generates a shutdown control signal, the power supply of the equipment and the power supply of the microprocessor stop supplying power, and the whole equipment startup and shutdown control circuit is completely powered down. Compared with a toggle switch and a Hall switch and a microprocessor, the circuit reduces the power consumption of the circuit and further saves energy.
Meanwhile, compared with a toggle switch, the form of the control key is easier to perform waterproof treatment, the power consumption is reduced, and meanwhile, the control key is suitable for special environments such as underwater and the like, so that the usability of the on-off control circuit of the equipment is wider.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a schematic circuit diagram illustrating a circuit for controlling a switching device by a hall switch and an MCU in the prior art provided in an embodiment of the present application;
fig. 2 is a schematic diagram illustrating a control function implemented by a device power on/off control circuit provided in an embodiment of the present application;
FIG. 3 is a schematic diagram illustrating a second control module implementing control functions provided in an embodiment of the present application;
fig. 4 is a schematic connection diagram of components of the device on/off control circuit provided in the embodiment of the present application.
Description of reference numerals:
101-control key, 102-first control module, 103-second control module, 104-microprocessor, 1031-switch control submodule, 1032-power control submodule, 1033-processor control submodule, J-touch key, R2-second resistor, R4-fourth resistor, R5-fifth resistor, Q3-third triode, C3-third capacitor, R6-sixth resistor, R14-fourteenth resistor, Q4-fourth triode, R50-fiftieth resistor, C97-ninety seventh capacitor, Q7-seventh triode, R62-sixty-second resistor, C45-forty-fifth capacitor, D3-third diode, D6-sixth diode, 100-external equipment, 1032-1-voltage stabilizing circuit.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The inventor analyzes and discovers that when the electronic equipment is controlled to be started or shut down, one control mode is a toggle switch, and a user toggles the toggle switch to an 'on' or 'off' position, so that the electronic equipment can be correspondingly started or shut down; and the toggle switch is toggled to an off position, the power supply of the electronic equipment is disconnected, and the electronic equipment is powered off. However, when the electronic device is continuously powered by the toggle switch, current flows through the toggle switch, and the toggle switch has certain loss, which causes resource waste.
The other control mode is that a Hall switch and an MCU are used, and a specific control circuit is shown in figure 1. The direct current power supply supplies power to the Hall switch and the microprocessor through the voltage stabilizer, when the Hall switch is switched on, the microprocessor generates a control signal to enable the triode to be conducted, and then the direct current power supply supplies power to the electronic equipment through the triode to complete the starting of the electronic equipment. When the Hall switch is disconnected, the microprocessor generates a control signal to cut off the triode, the direct current power supply stops supplying power to the electronic equipment, and the electronic equipment is shut down. In the process, no matter the electronic equipment is in a starting state or a shutdown state, the direct current power supply needs to supply power to the microprocessor all the time, so that the system loss is increased, and the energy is wasted.
The embodiment of the present application provides an apparatus on/off control circuit, which is used for controlling the on/off of an external apparatus 100, where the external apparatus 100 is an electronic apparatus that needs to be powered by a dc power supply, mainly refers to a low-voltage small-sized apparatus, such as a handheld electronic apparatus, and may also be any other type of apparatus that can be connected to the apparatus on/off control circuit, and the protection scope of the present application is not limited by the specific type of the external apparatus 100 connected to the apparatus on/off control circuit.
In one embodiment, the device power on/off control circuit includes: a control key 101, a first control module 102, a second control module 103 and a microprocessor 104.
Specifically, as shown in fig. 2, an output end of the control key 101 is connected to a signal input end of the first control module 102, a power input end of the first control module 102 is connected to an external dc power supply, and a signal output end of the first control module 102 is connected to a first signal input end of the second control module 103. A power input end of the second control module 103 is connected to an external dc power supply, a signal output end of the second control module 103 is connected to the microprocessor 104, a second signal input end of the second control module 103 is connected to a signal output end of the microprocessor 104, a first power output end of the second control module 103 is connected to the external device 100, and a second power output end of the second control module 103 is connected to the microprocessor 104.
In this embodiment, the first control module 102 and the second control module 103 are respectively connected to an external dc power supply. The control key 101 is configured to generate a key signal and transmit the key signal to the first control module 102, where the key signal is a signal for maintaining a preset duration.
The first control module 102 is configured to generate a first control signal and a second control signal according to the key signal and an external dc power supply, and transmit the first control signal and the second control signal to the second control module 103.
And the second control module 103 is configured to transmit the first control signal to the microprocessor 104, and generate a device power supply and a processor power supply according to the second control signal and an external dc power supply, where the device power supply supplies power to the external device 100, the processor power supply supplies power to the microprocessor 104, and the external device 100 is a device requiring an on/off control service.
The microprocessor 104 is configured to generate a power-on control signal or a power-off control signal according to the first control signal and transmit the power-on control signal or the power-off control signal to the second control module 103 after the processor power supplies power to the microprocessor 104; the power-on control signal is used to control the external device 100 to keep on after the key signal maintains the preset duration, and the power-off control signal is used to control the external device 100 to turn off.
In this embodiment, the specific process of the device on-off control circuit to complete the on-off control of the external device 100 is as follows:
the control key 101 generates a key signal and transmits the key signal to the first control module 102, and the first control module 102 generates a first control signal and a second control signal according to the key signal and an external dc power supply, and transmits the first control signal and the second control signal to the second control module 103. The second control module 103 generates a processor power supply and a device power supply according to the second control signal and the external dc power supply, the processor power supply supplies power to the microprocessor 104, and the device power supply supplies power to the external device 100. After the processor power supply supplies power to the microprocessor 104, the microprocessor 104 generates a power-on control signal or a power-off control signal. The key signal generated by the control key 101 disappears after a preset time period.
When the microprocessor 104 generates the power-on control signal, the second control module 103 continuously supplies power to the external device 100 and the microprocessor 104 according to the power-on control signal, the external device 100 maintains the power-on state, at this time, since the key signal disappears, the internal signal of the first control module 102 is cut off, no current passes through the internal of the first control module 102, and the power consumption of the circuit is reduced.
When the microprocessor 104 generates the shutdown control signal, the second control signal stops supplying power to the external device 100 and the microprocessor 104 according to the shutdown control signal, the external device 100 is shut down, and simultaneously, the microprocessor 104 stops working. That is, when the external device 100 is in the shutdown state, the second control module 103 and the microprocessor 104 are also in the non-operating state, and no current passes through, thereby avoiding unnecessary power consumption during shutdown of the external device 100 and avoiding resource waste.
In this embodiment, the preset duration for maintaining the key signal may be a duration set according to the circuit performance and the empirical data. The preset time duration of the key signal may be the shortest time duration that can be set, and when the external device 100 is controlled to be powered on, after it is required to ensure that the microprocessor 104 is normally powered on, the microprocessor 104 can execute the whole process of completing the power on, reading the first control signal, and outputting the power on control signal. That is, when the external device 100 is controlled to be powered on, the key signal needs to be output by the microprocessor 104 before the power-on control signal is disappeared. Meanwhile, the preset duration of the key signal may be the shortest duration, and when the external device 100 is controlled to be powered off, it needs to be ensured that the microprocessor 104 can perform the whole process of reading the first control signal and outputting the power-off control signal. That is, when the external device 100 is controlled to be powered off, the key signal needs to be output by the microprocessor 104 to be extinguished.
In one embodiment, second control module 103 includes a switch control sub-module 1031, a power control sub-module 1032, and a processor control sub-module 1033.
Specifically, as shown in fig. 3, a first signal input terminal of the switch control sub-module 1031 is connected to a signal output terminal of the first control module 102, a second signal input terminal of the switch control sub-module 1031 is connected to a first signal output terminal of the processor control sub-module 1033, a signal output terminal of the switch control sub-module 1031 is connected to a signal input terminal of the power control sub-module 1032, and a power input terminal of the switch control sub-module 1031 is connected to a second power output terminal of the power control sub-module 1032. A first signal input terminal of processor control sub-module 1033 is connected to a signal output terminal of first control module 102, a second signal output terminal of processor control sub-module 1033 is connected to a signal input terminal of microprocessor 104, and a second signal input terminal of processor control sub-module 1033 is connected to a signal output terminal of microprocessor 104. The power input end of the power control sub-module 1032 is connected to an external dc power supply, the first power output end of the power control sub-module 1032 is connected to the external device 100, and the second power output end of the power control sub-module 1032 is connected to the power input end of the microprocessor 104.
In this embodiment, the switch control sub-module 1031 is configured to generate a first intermediate signal according to the second control signal, and transmit the first intermediate signal to the power control sub-module 1032;
the power control sub-module 1032 is configured to generate an apparatus power supply and a processor power supply according to the first intermediate signal and an external direct current power supply, where the processor power supply is further configured to supply power to the switch control sub-module 1031;
the processor control sub-module 1033 is configured to transmit the first control signal to the microprocessor 104, and is configured to obtain a power-on control signal or a power-off control signal transmitted by the microprocessor 104, and transmit the power-on control signal or the power-off control signal to the switch control sub-module 1031.
In this embodiment, the specific process of implementing the function of the second control module 103 is as follows:
the switch control sub-module 1031 generates a first intermediate signal according to the second control signal, and transmits the first intermediate signal to the power control sub-module 1032, the power control sub-module 1032 generates an apparatus power supply and a processor power supply according to the first intermediate signal and an external direct current power supply, and the processor power supply simultaneously supplies power to the switch control sub-module 1031 and the microprocessor 104. The processor control sub-module 1033 receives the first control signal transmitted by the first control module 102, and the processor control sub-module 1033 transmits the first control signal to the microprocessor 104, after the microprocessor 104 is powered on to work, the microprocessor 104 generates a power-on control signal or a power-off control signal according to the first control signal, and transmits the power-on control signal or the power-off control signal to the power control sub-module 1032. Power control submodule 1032 transmits the power-on control signal or the power-off control signal to switch control submodule 1031.
After the microprocessor 104 is powered on and generates the power-on control signal or the power-off control signal, the key signal disappears, which results in the disappearance of the first control signal and the second control signal. At this time, since the microprocessor 104 is powered on, the power supply of the device is controlled by the power-on control signal or the power-off control signal generated by the microprocessor 104 to continuously supply power to the external device 100 or stop supplying power.
In one embodiment, as shown in fig. 4, the control key 101 is a point-touch key J, a first end of the point-touch key J is grounded, a second end of the point-touch key J is connected to the first control module 102, and a key signal is output through the second end of the point-touch key J; wherein, the key signal is a low level signal.
In one embodiment, the first control module 102 includes a second resistor R2, a fourth resistor R4, a fifth resistor R5, a third transistor Q3, and a third capacitor C3.
Specifically, a first end of the second resistor R2 is connected to an external dc power supply, and a second end of the second resistor R2 is connected to a gate of the third transistor Q3; a first end of the fourth resistor R4 is connected with an external direct current power supply, and a second end of the fourth resistor R4 is connected with a source electrode of the third triode Q3; a first end of the fifth resistor R5 is connected to a second end of the second resistor R2, and outputs a first control signal through a first end of the fifth resistor R5, a second end of the fifth resistor R5 is connected to the control key 101, and a key signal is input through a second end of the fifth resistor R5; a first end of the third capacitor C3 is connected to the gate of the third transistor Q3, and a second end of the third capacitor C3 is grounded; the drain of the third transistor Q3 is connected to the second control module 103, and outputs a second control signal via the drain of the third transistor Q3.
When the control key is not pressed down, the R2 pulls the grid of the Q3 to high level, so that the Q3 keeps an off state and is prevented from being triggered by mistake. R4 is a current limiting resistor, and is used for reducing the current when Q3 is conducted, thereby playing a role in protection. R5 is the resistance that the resistance is less, avoids the grid of Q3 direct ground connection in the circuit, plays the effect of protection. C3 is used to eliminate glitches when control buttons are pressed.
In one embodiment, the third transistor Q3 is a P-type Metal Oxide Semiconductor (PMOS) transistor.
In one embodiment, as shown in fig. 4, the switch control submodule 1031 includes a sixth resistor R6, a fourteenth resistor R14 and a fourth transistor Q4.
Specifically, a first end of the sixth resistor R6 is connected to the first control module 102 and the processor control submodule 1033, a second control signal is input through the first end of the sixth resistor R6, a power-on control signal or a power-off control signal is input through the first end of the sixth resistor R6, and a second end of the sixth resistor R6 is connected to the source of the fourth triode Q4; a gate of the fourth transistor Q4 is connected to the first end of the sixth resistor R6, a source of the fourth transistor Q4 is grounded, and a drain of the fourth transistor Q4 is connected to the second end of the fourteenth resistor R14; the first terminal of the fourteenth resistor R14 is connected to the power control sub-power, and the first intermediate signal is output through the first terminal of the fourteenth resistor R14.
Wherein, R6 is the gate source resistance of Q4, provides the bleeder circuit for Q4, and has the guard action.
In one embodiment, the fourth transistor Q4 is an N-type Metal-Oxide-Semiconductor field effect transistor (NMOS).
In one embodiment, as shown in FIG. 4, the power control sub-module 1032 includes a fifty-fifth resistor R50, a ninety-seventh capacitor C97, a seventh transistor Q7, and a voltage regulator circuit 1032-1.
A first end of the fifty-th resistor R50 is connected with an external direct current power supply, and a second end of the fifty-th resistor R50 is connected with the grid electrode of the seventh triode Q7; a gate of the seventh transistor Q7 is connected to the switch control submodule 1031, the first intermediate signal is input through the gate of the seventh transistor Q7, a source of the seventh transistor Q7 is connected to the first end of the fifty-fifth resistor R50, and a drain of the seventh transistor Q7 is connected to the first end of the ninety-seventh capacitor C97; a first end of the ninety-seventh capacitor C97 is connected to an input of the voltage regulation circuit 1032-1, and a second end of the ninety-seventh capacitor C97 is connected to a second end of the fifty-fifth resistor R50; the input end of the voltage stabilizing circuit 1032-1 is connected with the drain electrode of the seventh triode Q7, the first output end of the voltage stabilizing circuit 1032-1 is connected with the external device 100, the device power is output through the first output end of the voltage stabilizing circuit 1032-1, the second output end of the voltage stabilizing circuit 1032-1 is connected with the power input end of the microprocessor 104, and the processor power is output through the second output end of the voltage stabilizing circuit 1032-1.
Among them, C97 has a slow-action function for reducing the influence of the rush current on the circuit. R50 is the gate-source resistance of Q7, provides a bleeder circuit for Q7, and has protection effect.
In one embodiment, the seventh transistor Q7 is a P-type Metal Oxide Semiconductor field effect transistor (PMOS).
In one embodiment, the Regulator circuit 1032-1 is a Low Dropout Regulator (LDO); alternatively, the voltage regulator circuit 1032-1 is a Direct Current to Direct Current (DCDC) converter.
In one embodiment, the regulator circuit 1032-1 may output power at different voltage levels simultaneously, for example, when the external DC power source provides 4V power, the voltage of the device power output by the regulator circuit 1032-1 is 4V, and the voltage of the processor power output by the regulator circuit 1032-1 is 3.3V. The voltage stabilizing circuit 1032-1 may also provide power of voltage class according to actual conditions and needs, and the protection scope of the present application is not limited by the voltage class of the output power of the voltage stabilizing circuit 1032-1.
In one embodiment, as shown in FIG. 4, processor control submodule 1033 includes a sixtieth resistor R62, a forty-fifth capacitor C45, a third diode D3, and a sixth diode D6.
Specifically, a first end of the sixty-second resistor R62 is connected to the power control sub-module 1032, the processor power is input through a first end of the sixty-second resistor R62, and a second end of the sixty-second resistor R62 is connected to a first end of the forty-fifth capacitor C45; a first terminal of the forty-fifth capacitor C45 is connected to the signal input terminal of the microprocessor 104, and a second terminal of the forty-fifth capacitor C45 is connected to ground; a cathode of the third diode D3 is connected to the second terminal of the first control module 102, and a first control signal is input through a cathode of the third diode D3, and an anode of the third diode D3 is connected to the first terminal of the forty-fifth capacitor C45, and a first control signal is output through an anode of the third diode D3; a cathode of the sixth diode D6 is connected to the switch control submodule 1031, and outputs a power-on control signal or a power-off control signal through a cathode of the sixth diode D6, and an anode of the sixth diode D6 is connected to the microprocessor 104, and inputs the power-on control signal or the power-off control signal through an anode of the sixth diode D6.
Wherein, C45 is a filter capacitor for eliminating the burr when the key is pressed.
In one embodiment, the third diode D3 is a small signal schottky diode. The small signal schottky diode has a small forward conduction voltage, e.g., about 0.24V, for isolating the microprocessor 104 from other components in the device on/off control circuit. It should be noted that the forward conducting voltage of the third diode D3 must be lower than the predetermined voltage value to ensure that the anode of the third diode D3 is at the active low level after the key is pressed. In addition, the anode of the third diode D3 needs to be connected to the power supply of the processor, and after the computer is turned on, the key is released, so that the signal input end of the microprocessor 104 is kept at a high level, and false triggering is avoided. The signal input terminal of the microprocessor 104 is active at a low level, and the signal output terminal of the microprocessor 104 is active at a high level when the power-on control signal needs to be output, and is active at a low level when the power-off control signal needs to be output or the external device remains in a power-off state.
In one embodiment, the sixth diode D6 is a small signal schottky diode. The small signal schottky diode has a small forward conduction voltage, e.g., about 0.24V, for isolating the microprocessor 104 from other components in the device on/off control circuit. When the external device 100 is required to be turned off, the anode of the D6 is at a low level after the touch key J is pressed, and if the D6 is not pressed, current instantly flows into the microprocessor 104 from an external dc power supply through the Q3, so that the microprocessor 104 is burned.
In one embodiment, the circuit further comprises a battery for providing an external dc power source. The power supply voltage provided by the battery can be set according to actual conditions and needs, for example, the battery provides power with the voltage of 4V. The battery can also be selected from batteries providing other voltage levels, and the protection scope of the application is not limited by the specific type of the battery and the specific voltage level provided. In this embodiment, external dc power is provided by the battery, is more applicable to equipment such as handheld device and accomplishes the control of switching on and shutting down. Other structures and components and parts of this equipment on-off control circuit of cooperation can avoid the battery energy extravagant, and it is long when the extension battery is used, improves user's use and experiences.
In one embodiment, the specific type and/or size of the electrical component in the above process is determined according to the circuit connection structure, the function of the component itself in the circuit, and the actual requirements. For example, the resistances of the resistors R2, R4, R5, R6, R50, R14, and R62 are 10 kilo-ohms (abbreviated as K Ω), 681 Ω, 33 Ω, 15K Ω, 33.2 Ω, and 10K Ω, respectively, and the capacitances of the capacitors C3, C45, and C97 are 0.1 microfarad (abbreviated as μ F), 0.1 μ F, and 1 μ F, respectively. Other specific values can be set according to actual conditions and needs, and the protection scope of the application is not limited by specific types and/or sizes of components.
According to the hardware connection of the device on-off control circuit in the above embodiment, the specific process of implementing the on-off control by the circuit is described below based on the specific circuit of fig. 4. It should be noted that, in the above embodiments, the key signal, the first control signal, the second control signal, the power-on control signal, the power-off control signal, the first intermediate signal, and the like are all high level or low level, and the key signal, the first control signal, the second control signal, the power-on control signal, the power-off control signal, the first intermediate signal, and the like are names artificially defined for convenience of description, and the protection scope of the present application is not limited by the specific name definition principle of the signal or the level.
In one embodiment, the process of the circuit in fig. 4 to power on and keep on the external device 100 is as follows:
when the external device 100 is in the power-off state and the touch key J is not pressed, the gate of Q3 is at the high level, Q3 is at the off state, the whole circuit does not work, at this time, the microprocessor 104 is not powered on, and the signal output terminal of the microprocessor 104 maintains the low level, that is, the anode of D6 maintains the low level. The external DC power supply is provided by a battery and has a voltage of 4V.
The click key J is pressed and held down for a preset duration, for example, 3 seconds. Because the first end of the point contact key J is grounded, when the point contact key J is switched on, the second end of the J is at a low level.
The gate of Q3 changes from high to low through a protection resistor R5 with a very small resistance. Since Q3 is PMOS, Q3 is on. Since the source of Q3 is connected to an external dc power source, when Q3 is turned on, the drain of Q3 goes from low to high, and the gate of Q4 goes high. Since Q4 is NOMS, Q4 is on. Since the source of Q4 is grounded, when Q4 is turned on, the drain of Q4 goes from high to low, and the gate of Q7 goes low. Since Q7 is PMOS, Q7 is on. The external dc power supply is passed through Q7 and a 4V device power supply, which supplies power to the external device 100, and a 3.3V processor power supply, which supplies power to the microprocessor 104, are generated by the voltage regulator circuit 1032-1.
When the click key J is pressed, the gate of Q3 changes from high to low, and the cathode of D3 also changes from high to low. Since D3 is a small signal schottky diode, when the cathode of D3 is low, the anode of D3 also becomes low.
When the microprocessor 104 is powered on and initialized, the microprocessor 104 detects the level state of each external pin. Since D6 is a small signal schottky diode, the anode of D6 remains low when the cathode of D6 goes high due to the conduction of Q3. At this time, when the microprocessor 104 detects that the signal input terminal of the anode microprocessor of D3 is low, the signal output terminal of the microprocessor 104 outputs high, and the anode of D6 becomes high.
When the anode of the D6 is at a high level and the point touch key J is kept pressed for a preset time, the point touch key J is released and is not switched on any more. After R5, the gate of Q3 changes from low to high, and Q3 is turned off. However, since the signal output terminal of the microprocessor 104 outputs a high level and the anode of the D6 is at a high level, the cathode of the D6 is kept at a high level, the gate of the Q4 is kept at a high level, and the Q7 is turned on, so that the voltage regulator circuit 1032-1 continuously supplies power to the external device 100 and the microprocessor 104, and the external device 100 is kept at a power-on state.
In addition, the processor power supply is connected to the first terminal of R62 while the processor power supply is supplying power to the microprocessor 104. When the voltage stabilizing circuit 1032-1 outputs processor power, the anode of the D3 is maintained at a high level state, which can prevent the external device 100 from being accidentally turned off due to a key touch error.
In this embodiment, after the point touch key J is pressed for a preset time, the point touch key J is released and is not turned on, and Q3 is turned off. Because the signal output end of the microprocessor 104 outputs high level, the Q4 is still conducted, and further the Q7 is conducted, so that after the point contact key J is released, the external device 100 is still powered on, and the start-up maintenance of the external device 100 is realized. And after the point contact key J loosens, Q3 ends, and then first control module no longer has the electric current to pass through, has reduced the whole consumption of circuit, avoids the energy waste.
In an embodiment, after the boot process described in the above embodiment is completed and the external device 100 remains in the boot state, as shown in fig. 4, a specific process of implementing the shutdown of the external device 100 by the device power on/off control circuit is as follows:
when the external device 100 remains in the power-on state, the touch key J is pressed and kept pressed for a preset duration, for example, the touch key J is pressed and kept for 3 seconds. The second terminal of the touch key J becomes a low level.
The cathode of D3 also changes from high to low through resistor R5. Since D3 is a small signal schottky diode, when the cathode of D3 is low, the anode of D3 also becomes low. When the microprocessor 104 detects that the anode of the signal input terminal D3 is low, the signal output terminal of the microprocessor 104 outputs low. Further, the anode of D6 is at low level, and the cathode of D6 is at low level. The gate of Q4 goes low, Q4 turns off, and further the drain of Q4 goes high, the gate of Q7 goes high, and Q7 turns off. After the Q7 is turned off, the external dc power supply cannot continue to supply power to the external device 100 and the microprocessor 104 through the voltage stabilizing circuit 1032-1, and the external device 100 is powered off and the microprocessor 104 is powered off.
After the point touch key J is kept pressed for a preset time, the point touch key J is released and is not switched on. After R5, the gate of Q3 changes from low to high, and Q3 is turned off. Up to this point, the external device 100 and the device switch control circuit stop operating.
In this embodiment, after the device power on/off control circuit completes the power off action, no current flows through the whole circuit, so that unnecessary power consumption after the power off is avoided, the overall power consumption of the circuit is further reduced, and the energy is saved.
In one embodiment, the microprocessor 104 further has a device external terminal for connecting to the external device 100 and receiving signals transmitted by the external device 100.
In the process of turning on the external device 100, when the external device 100 encounters a fault alarm or the external device 100 is not used for a long time, the external device 100 transmits a device alarm signal to the microprocessor 104 through the device external terminal, and controls the device on/off control circuit to complete the process of turning off the external device 100 through the device alarm signal, as shown in fig. 4, the specific process is as follows:
the microprocessor 104 receives the device alarm signal through the external device terminal. The microprocessor 104 outputs a low level through a signal output terminal of the microprocessor 104 according to the device alarm signal. Further, the anode of D6 is at low level, and the cathode of D6 is at low level. The gate of Q4 goes low, Q4 turns off, and further the drain of Q4 goes high, the gate of Q7 goes high, and Q7 turns off. After the Q7 is turned off, the external dc power supply cannot continue to supply power to the external device 100 and the microprocessor 104 through the voltage stabilizing circuit 1032-1, and the external device 100 is powered off and the microprocessor 104 is powered off.
In this embodiment, when the external device 100 encounters a fault, the external device 100 can be shut down through the device alarm signal, so that an automatic shutdown process when the external device 100 fails is realized, damage to components and even safety accidents caused by continuous operation of the external device 100 in a fault state are avoided, and the safety of the device in the using process is improved.
When the external device 100 is not used for a long time, the external device 100 can be automatically turned off, so that the power consumption caused by forgetting to turn off the external device 100 is avoided, and the energy waste is avoided.
The application provides a device on-off control circuit has realized the indirect management of equipment power, and especially the existence of first control module and second control module has realized key signal, with first control signal and second control signal's isolation. The key signal is a signal lasting for a preset duration, that is, the control key is turned off after being turned on for the preset duration, and the key signal disappears. However, since the microprocessor has already generated the power-on control signal or the power-off control signal and transmitted the power-on control signal or the power-off control signal to the second control module, the power supply of the device is controlled by the microprocessor at this time, and when the key signal disappears, the first control module has no current signal to pass through. If the microprocessor generates a starting control signal, the power supply of the equipment can be ensured to continuously supply power to the external equipment, and the starting state of the external equipment is maintained; if the microprocessor generates a shutdown control signal, the power supply of the equipment and the power supply of the microprocessor stop supplying power, and the whole equipment startup and shutdown control circuit is completely powered down. Compared with a toggle switch and a Hall switch and a microprocessor, the circuit reduces the power consumption of the circuit and further saves energy.
When the equipment on-off control circuit provided by the application is applied to underwater equipment, particularly underwater handheld equipment, the point contact key is easier to perform waterproof treatment. Moreover, the control method of the circuit is simple, and only the control key needs to be pressed and the preset time length is maintained no matter the circuit is started or shut down, and meanwhile, the preset time length can avoid unnecessary starting and shutting down of external equipment caused by the conditions of mistaken touch and the like. The circuit structure of the circuit is simple, and the circuit is easy to integrate with external equipment into a whole, so that the use experience of a user is improved.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (14)
1. An apparatus power on/off control circuit, comprising: the device comprises a control key (101), a first control module (102), a second control module (103) and a microprocessor (104);
the first control module (102) and the second control module (103) are respectively connected with an external direct current power supply;
the control key (101) is used for generating a key signal and transmitting the key signal to the first control module (102), wherein the key signal is a signal for maintaining a preset duration;
the first control module (102) is configured to generate a first control signal and a second control signal according to the key signal and the external dc power supply, and transmit the first control signal and the second control signal to the second control module (103);
the second control module (103) is used for transmitting the first control signal to the microprocessor (104) and generating an equipment power supply and a processor power supply according to the second control signal and the external direct current power supply, wherein the equipment power supply supplies power to an external device (100), the processor power supply supplies power to the microprocessor (104), and the external device (100) is a device needing on-off control service;
the microprocessor (104) is configured to generate a power-on control signal or a power-off control signal according to the first control signal and transmit the power-on control signal or the power-off control signal to the second control module (103) after the power supply of the processor supplies power to the microprocessor (104);
the power-on control signal is used for controlling the external device (100) to be powered on after the key signal maintains the preset duration, and the power-off control signal is used for controlling the external device (100) to be powered off.
2. The device on/off control circuit according to claim 1, wherein the second control module (103) comprises a switch control sub-module (1031), a power supply control sub-module (1032) and a processor control sub-module (1033);
the switch control sub-module (1031) is used for generating a first intermediate signal according to the second control signal and transmitting the first intermediate signal to the power supply control sub-module (1032);
the power control sub-module (1032) is configured to generate the device power supply and the processor power supply according to the first intermediate signal and the external direct current power supply, where the processor power supply is further configured to supply power to the switch control sub-module (1031);
the processor control sub-module (1033) is configured to transmit the first control signal to the microprocessor (104), and is configured to acquire the power-on control signal or the power-off control signal transmitted by the microprocessor (104), and transmit the power-on control signal or the power-off control signal to the switch control sub-module (1031).
3. The device on-off control circuit according to claim 1, wherein the control key (101) is a point touch key (J), a first end of the point touch key (J) is grounded, a second end of the point touch key (J) is connected to the first control module (102), and the key signal is output through the second end of the point touch key (J);
the key signal is a low level signal.
4. The device on/off control circuit of claim 1, wherein the first control module (102) comprises a second resistor (R2), a fourth resistor (R4), a fifth resistor (R5), a third transistor (Q3), and a third capacitor (C3);
a first end of the second resistor (R2) is connected with the external direct current power supply, and a second end of the second resistor (R2) is connected with a grid electrode of the third triode (Q3);
a first end of the fourth resistor (R4) is connected with the external direct current power supply, and a second end of the fourth resistor (R4) is connected with a source electrode of the third triode (Q3);
a first end of the fifth resistor (R5) is connected with a second end of the second resistor (R2), the first control signal is output through the first end of the fifth resistor (R5), a second end of the fifth resistor (R5) is connected with the control key (101), and the key signal is input through the second end of the fifth resistor (R5);
a first end of the third capacitor (C3) is connected with the gate of the third triode (Q3), and a second end of the third capacitor (C3) is grounded;
the drain electrode of the third triode (Q3) is connected with the second control module (103), and the second control signal is output through the drain electrode of the third triode (Q3).
5. The device on/off control circuit of claim 4, wherein the third transistor (Q3) is a P-type metal oxide semiconductor field effect transistor.
6. The device on-off control circuit according to claim 2, wherein the switch control submodule (1031) comprises a sixth resistor (R6), a fourteenth resistor (R14) and a fourth transistor (Q4);
a first end of the sixth resistor (R6) is connected to the first control module (102) and the processor control submodule (1033), the second control signal is input through a first end of the sixth resistor (R6), the power-on control signal or the power-off control signal is input through a first end of the sixth resistor (R6), and a second end of the sixth resistor (R6) is connected to a source of the fourth transistor (Q4);
the gate of the fourth triode (Q4) is connected with the first end of the sixth resistor (R6), the source of the fourth triode (Q4) is grounded, and the drain of the fourth triode (Q4) is connected with the second end of the fourteenth resistor (R14);
a first terminal of the fourteenth resistor (R14) is connected to the power control sub power source, and the first intermediate signal is output through a first terminal of the fourteenth resistor (R14).
7. The device on/off control circuit according to claim 6, wherein the fourth transistor (Q4) is an N-type metal oxide semiconductor field effect transistor.
8. The device switch control circuit of claim 2, wherein the power control sub-module (1032) comprises a fifty-fifth resistor (R50), a ninety-seventh capacitor (C97), a seventh transistor (Q7), and a regulation circuit (1032-1);
a first end of the fifty-th resistor (R50) is connected with the external direct current power supply, and a second end of the fifty-th resistor (R50) is connected with the grid electrode of the seventh triode (Q7);
a gate of the seventh transistor (Q7) is connected to the switching control submodule (1031), the first intermediate signal is input through a gate of the seventh transistor (Q7), a source of the seventh transistor (Q7) is connected to a first end of the fifty-fifth resistor (R50), and a drain of the seventh transistor (Q7) is connected to a first end of the ninety-seventh capacitor (C97);
a first end of the ninety-seventh capacitor (C97) is connected to an input end of the voltage stabilizing circuit (1032-1), and a second end of the ninety-seventh capacitor (C97) is connected to a second end of the fifty-fifth resistor (R50);
the input end of the voltage stabilizing circuit (1032-1) is connected with the drain electrode of the seventh triode (Q7), the first output end of the voltage stabilizing circuit (1032-1) is connected with the external equipment (100), the equipment power supply is output through the first output end of the voltage stabilizing circuit (1032-1), the second output end of the voltage stabilizing circuit (1032-1) is connected with the power supply input end of the microprocessor (104), and the processor power supply is output through the second output end of the voltage stabilizing circuit (1032-1).
9. The device on/off control circuit according to claim 8, wherein the seventh transistor (Q7) is a P-type metal oxide semiconductor field effect transistor.
10. The device on/off control circuit of claim 9, wherein said voltage regulation circuit (1032-1) is a low dropout linear regulator;
alternatively, the first and second electrodes may be,
the voltage stabilizing circuit (1032-1) is a direct current voltage converter.
11. The device on/off control circuit of claim 2, wherein the processor control submodule (1033) comprises a sixty-second resistor (R62), a forty-fifth capacitor (C45), a third diode (D3) and a sixth diode (D6);
a first end of the sixty-second resistor (R62) is connected with the power supply control sub-module (1032), the processor power supply is input through a first end of the sixty-second resistor (R62), and a second end of the sixty-second resistor (R62) is connected with a first end of the forty-fifth capacitor (C45);
a first terminal of the forty-fifth capacitor (C45) is connected to the signal input terminal of the microprocessor (104), and a second terminal of the forty-fifth capacitor (C45) is grounded;
the cathode of the third diode (D3) is connected to the first control module (102), the first control signal is input through the cathode of the third diode (D3), the anode of the third diode (D3) is connected to the first end of the forty-fifth capacitor (C45), and the first control signal is output through the anode of the third diode (D3);
the cathode of the sixth diode (D6) is connected to the switch control submodule (1031), the power-on control signal or the power-off control signal is output through the cathode of the sixth diode (D6), the anode of the sixth diode (D6) is connected to the microprocessor (104), and the power-on control signal or the power-off control signal is input through the anode of the sixth diode (D6).
12. The device on/off control circuit as claimed in claim 11, wherein said third diode (D3) is a small signal schottky diode.
13. The device on/off control circuit according to claim 11, wherein the sixth diode (D6) is a small signal schottky diode.
14. The device on/off control circuit of claim 1, wherein the circuit further comprises a battery;
the battery is used for providing the external direct current power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110701048.5A CN113517884A (en) | 2021-06-24 | 2021-06-24 | Equipment on-off control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110701048.5A CN113517884A (en) | 2021-06-24 | 2021-06-24 | Equipment on-off control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113517884A true CN113517884A (en) | 2021-10-19 |
Family
ID=78066151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110701048.5A Pending CN113517884A (en) | 2021-06-24 | 2021-06-24 | Equipment on-off control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113517884A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114531022A (en) * | 2022-03-10 | 2022-05-24 | 深圳市志合世纪科技有限公司 | Startup starting circuit and electronic equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204314962U (en) * | 2014-11-21 | 2015-05-06 | 江苏邦融微电子有限公司 | For the on/off circuit in fingerprint attendance and fingerprint entrance guard system |
| CN204442320U (en) * | 2015-03-23 | 2015-07-01 | 曲保章 | A kind of start mains switch that powers on controllable function |
| CN209149116U (en) * | 2018-11-23 | 2019-07-23 | 浙江零跑科技有限公司 | A kind of any key wakeup circuit of low-power consumption |
| CN210742886U (en) * | 2019-12-28 | 2020-06-12 | 深圳市诺威达电汽有限公司 | Startup and shutdown circuit |
| CN111934661A (en) * | 2020-08-04 | 2020-11-13 | 深圳市宏电技术股份有限公司 | Startup and shutdown control circuit |
-
2021
- 2021-06-24 CN CN202110701048.5A patent/CN113517884A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204314962U (en) * | 2014-11-21 | 2015-05-06 | 江苏邦融微电子有限公司 | For the on/off circuit in fingerprint attendance and fingerprint entrance guard system |
| CN204442320U (en) * | 2015-03-23 | 2015-07-01 | 曲保章 | A kind of start mains switch that powers on controllable function |
| CN209149116U (en) * | 2018-11-23 | 2019-07-23 | 浙江零跑科技有限公司 | A kind of any key wakeup circuit of low-power consumption |
| CN210742886U (en) * | 2019-12-28 | 2020-06-12 | 深圳市诺威达电汽有限公司 | Startup and shutdown circuit |
| CN111934661A (en) * | 2020-08-04 | 2020-11-13 | 深圳市宏电技术股份有限公司 | Startup and shutdown control circuit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114531022A (en) * | 2022-03-10 | 2022-05-24 | 深圳市志合世纪科技有限公司 | Startup starting circuit and electronic equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105094015B (en) | Control circuit, control method and shooting equipment | |
| CN106933321B (en) | Electronic equipment and starting method thereof | |
| CN112737558A (en) | Multifunctional key switch circuit for electronic product | |
| CN113517884A (en) | Equipment on-off control circuit | |
| CN210052071U (en) | On-chip integrated on-off control circuit | |
| US9705323B2 (en) | Power supply system and power control circuit thereof | |
| CN111399617B (en) | Power supply control device and electronic apparatus | |
| RU2360274C1 (en) | Direct voltage stabiliser | |
| CN212012131U (en) | Power supply energy-saving management circuit for detecting vibration | |
| CN111092411B (en) | Single-fire intelligent switch and electric leakage protection method thereof | |
| CN110858165B (en) | Chip set, chip set starting method and electronic equipment | |
| CN111367338B (en) | Self-resetting switching circuit based on feedback control and control method | |
| CN111698380B (en) | Power supply control circuit and image forming apparatus | |
| CN218976383U (en) | Self-locking power supply circuit for BMS | |
| CN216146093U (en) | Power supply circuit and electronic device | |
| CN113625856B (en) | Startup and shutdown circuit and electronic equipment | |
| CN217824413U (en) | Uninterrupted power supply switching control circuit and device | |
| JP2014182686A (en) | Control device | |
| CN210578475U (en) | Micropower passive time-delay starting circuit | |
| CN118264233A (en) | High-side NMOS (N-channel metal oxide semiconductor) tube output protection circuit, chip and electronic equipment | |
| CN219164543U (en) | Switching circuit | |
| CN113131600B (en) | Power supply control system, electrical equipment and electrical equipment control method | |
| CN219512634U (en) | USB module control circuit, USB equipment and electronic equipment | |
| CN108664435B (en) | Data clearing circuit and electronic equipment | |
| CN112332513B (en) | Electronic equipment and power control method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211019 |
|
| RJ01 | Rejection of invention patent application after publication |