CN204697033U - System reset circuit and electronic equipment - Google Patents
System reset circuit and electronic equipment Download PDFInfo
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- CN204697033U CN204697033U CN201520408959.9U CN201520408959U CN204697033U CN 204697033 U CN204697033 U CN 204697033U CN 201520408959 U CN201520408959 U CN 201520408959U CN 204697033 U CN204697033 U CN 204697033U
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Abstract
The utility model discloses a kind of system reset circuit and electronic equipment, wherein this system reset circuit is used for providing reset signal for the master controller of electronic equipment, this system reset circuit comprises function button, charging inlet, carries out the charging module that charges for the charge power supply inputted according to described charging inlet, and for be pressed at described function button and the charging of described charging module time export the reset control module of reset signal to described master controller; The input of described charging module is connected with described charging inlet, the output of described charging module is connected with the first input end of described reset control module, second input of described reset control module is connected with described function button, and the output of described reset control module is connected to the reset detection end of described master controller.The utility model can improve the convenience of system reset operation and the versatility of system reset circuit.
Description
Technical field
The utility model relates to electronic circuit technology field, particularly relates to a kind of system reset circuit and electronic equipment.
Background technology
At present, most of electronic equipment, such as, needs to solve deadlock problem with reset in the electronic equipment for consumption such as convenient DVD, Dock audio amplifier, but the reset mode of electronic equipment exists following problem at present:
1, electronic equipment does not have reset key, when electronic equipment crashes, need to cut off the electricity supply or removing battery restart electronic equipment, to solve deadlock problem.
2, electronic equipment only has the reset hole being used for specially realizing reset function, the reduction point being passed this reset hole trigger electronics by fine needle is needed to realize reset function, not only inconvenient operation, but also need to be the measure of this reset hole design anti-gas-leak specially.
3, two function buttons on multiplexing electronic equipment reset, to need to use on electronic equipment two to realize with the function button that homing action does not conflict, but due to the restriction of this body structure of equipment, function button on equipment is fewer and feweri, and for the electronic equipment containing two or more function buttons, usually a function button is had to be used for doing POWER STANDBY (power backup) key, thus for only having the electronic equipment of one or two function button, then the mode of inapplicable multiplexing two function buttons realizes system hard reset.
Utility model content
Main purpose of the present utility model is to provide a kind of system reset circuit, is intended to improve the convenience of system reset operation and the versatility of system reset circuit.
In order to achieve the above object, the system reset circuit that the utility model provides, reset signal is provided for the master controller for electronic equipment, described system reset circuit comprises function button, charging inlet, carries out the charging module that charges for the charge power supply inputted according to described charging inlet, and for be pressed at described function button and the charging of described charging module time export the reset control module of reset signal to described master controller;
The input of described charging module is connected with described charging inlet, the output of described charging module is connected with the first input end of described reset control module, second input of described reset control module is connected with described function button, and the output of described reset control module is connected to the reset detection end of described master controller.
Preferably, described charging module comprises electric capacity and the first resistance;
One end of described electric capacity is connected with described charging inlet, and the other end of described electric capacity is via described first grounding through resistance, and described electric capacity is connected with the first input end of described reset control module with the points of common connection of described first resistance.
Preferably, described reset control module comprises power input, the first electronic switch, the second electronic switch, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance and reset output terminal;
The control end of described first electronic switch is connected with the output of described charging module, the input of described first electronic switch is connected with described power input via described second resistance, and the output of described first electronic switch is connected with the input of described second electronic switch via described 3rd resistance; The control end of described second electronic switch is connected with described power input via described 4th resistance, and via described function button ground connection, the output of described second electronic switch is via described 5th grounding through resistance, and the output of described second electronic switch is connected with described reset output terminal with the points of common connection of described 5th resistance.
Preferably, described reset control module also comprises the 6th resistance and the 7th resistance;
One end of described 6th resistance is connected with the points of common connection of described 4th resistance and described function button, and the other end of described 6th resistance is connected with the control end of described second electronic switch; One end of described 7th resistance is connected with the points of common connection of the output of described second electronic switch with described 5th resistance, and the other end of described 7th resistance is connected with described reset output terminal.
Preferably, described first electronic switch is NPN triode, and described second electronic switch is PNP triode;
The base stage of described NPN triode is the control end of described first electronic switch, the input of very described first electronic switch of current collection of described NPN triode, the output of very described first electronic switch of transmitting of described NPN triode;
The base stage of described PNP triode is the control end of described second electronic switch, the input of very described second electronic switch of transmitting of described PNP triode, the output of very described second electronic switch of current collection of described PNP triode.
Preferably, described first electronic switch is NMOS tube, and described second electronic switch is PMOS;
The grid of described NMOS tube is the control end of described first electronic switch, and the drain electrode of described NMOS tube is the input of described first electronic switch, and the source electrode of described NMOS tube is the output of described first electronic switch;
The grid of described PMOS is the control end of described second electronic switch, and the source electrode of described PMOS is the input of described second electronic switch, and the drain electrode of described PMOS is the output of described second electronic switch.
The utility model also provides a kind of electronic equipment, this electronic equipment master controller and system reset circuit, this system reset circuit is connected with described master controller, for providing reset signal for described master controller, described system reset circuit comprises function button, charging inlet, carries out the charging module that charges for the charge power supply inputted according to described charging inlet, and for be pressed at described function button and the charging of described charging module time export the reset control module of reset signal to described master controller;
The input of described charging module is connected with described charging inlet, the output of described charging module is connected with the first input end of described reset control module, second input of described reset control module is connected with described function button, and the output of described reset control module is connected to the reset detection end of described master controller.
The charge power supply that technical solutions of the utility model are inputted according to charging inlet by charging module is charged, and reset control module output reset signal when function button is pressed and charging module charges carries out system reset to master controller, thus, by the compound mode of a function button and charging inlet, system hard reset is realized when function button is pressed and charging inlet input charge power supply is charged to charging module, reset operation is simple, improve the convenience of system reset operation, and be applicable to only containing the electronic equipment of one or two function button, improve the versatility of system reset circuit.
Accompanying drawing explanation
Fig. 1 is the theory diagram of the utility model system reset circuit preferred embodiment;
Fig. 2 is the electrical block diagram of the utility model system reset circuit one embodiment;
Fig. 3 is the electrical block diagram of another embodiment of the utility model system reset circuit.
Drawing reference numeral illustrates:
| Function button 10 | Charging inlet 20 | Charging module 30 | Reset control module 40 |
| First resistance R1 | Second resistance R2 | 3rd resistance R3 | 4th resistance R4 |
| 5th resistance R5 | 6th resistance R6 | 7th resistance R7 | Electric capacity C1 |
| First electronic switch Q1 | Second electronic switch Q2 | Power input VIN | Reset output terminal RST |
The realization of the purpose of this utility model, functional characteristics and advantage, will in conjunction with the embodiments, and be described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
The utility model provides a kind of system reset circuit, and this system reset circuit is applied to electronic equipment, specifically can be applicable to the electronic equipment for consumption of charged pool, the little speaker products of AUDIO class such as such as portable DVD, Dock audio amplifier, bluetooth SPK.
With reference to the theory diagram that Fig. 1, Fig. 1 are the preferred embodiment of the utility model system reset circuit.
In the utility model preferred embodiment, system reset circuit of the present utility model is used for providing reset signal for the master controller of electronic equipment, and described system reset circuit comprises function button 10, charging inlet 20, charging module 30 and reset control module 40; Wherein, this charging module 30 charges for the charge power supply inputted according to described charging inlet 20, and this reset control module 40 is for exporting reset signal to described master controller when described function button 10 is pressed and described charging module 30 charges.
The input of described charging module 30 is connected with described charging inlet 20, the output of described charging module 30 is connected with the first input end of described reset control module 40, second input of described reset control module 40 is connected with described function button 10, and the output of described reset control module 40 is connected to the reset detection end of described master controller.
In the present embodiment, this function button 10 is one of them function button of electronic equipment, this charging inlet 20 is connected to external recharging apparatus (as adapter) by charging wire (as USB line), to access the charge power supply that external recharging apparatus provides, thus the charge power supply that charging module 30 inputs according to charging inlet 20 is charged to the battery of electronic equipment, when function button 10 is pressed and charging module 30 charges, reset control module 40 is triggered and exports reset signal to master controller, main controller is resetted to system according to this reset signal, thus at electronic equipment in running order or crash, if function button 10 is pressed and charging inlet 20 inputs charge power supply charges to charging module 30, then reset control module 40 exports reset signal and realizes system hard reset to master controller.
Relative to prior art, system reset circuit of the present utility model passes through the compound mode of a function button 10 and charging inlet 20, to be pressed and charging inlet 20 inputs charge power supply is charged to charging module 30 and realizes system hard reset at function button 10, reset operation is simple, improve the convenience of system reset operation, and be applicable to, only containing the electronic equipment of one or two function button, improve the versatility of system reset circuit, and reduce operation easier.
Refer again to Fig. 2, Fig. 2 is the electrical block diagram of the utility model system reset circuit one embodiment.
As shown in Figure 2, described charging module 30 comprises electric capacity C1 and the first resistance R1; One end of described electric capacity C1 is connected with described charging inlet 20, the other end of described electric capacity C1 is via described first resistance R1 ground connection, described electric capacity C1 is connected with the first input end of described reset control module 40 with the points of common connection of described first resistance R1, and the connected mode between this charging module 30 and electric device battery is not shown.
Electric capacity C1 and the first resistance R1 forms a RC charge circuit, electric capacity C1 plays every straight effect after charging complete, charging inlet 20 and reset control module 40 are isolated, cut off the drive circuit of reset control module 40, the charge power supply that charging inlet 20 is inputted provides driving voltage no longer to reset control module 40, reset control module 40 turns off because not having driving voltage, does not thus export reset signal.
As shown in Figure 2, described reset control module 40 comprises power input VIN, the first electronic switch Q1, the second electronic switch Q2, the second resistance R2, the 3rd resistance R3, the 4th resistance R4, the 5th resistance R5 and reset output terminal RST.Wherein, power input VIN can be connected to the battery of electronic equipment, and access cell voltage, the second resistance R2, the 3rd resistance R3, the 4th resistance R4, the 5th resistance R5 are the first electronic switch Q1, the second electronic switch Q2 provides bias voltage.
The control end of described first electronic switch Q1 is connected with the output of described charging module 30, as in Fig. 2, the control end of described first electronic switch Q1 is connected with the points of common connection of described electric capacity C1 and described first resistance R1, the input of described first electronic switch Q1 is connected with described power input VIN via described second resistance R2, and the output of described first electronic switch Q1 is connected with the input of described second electronic switch Q2 via described 3rd resistance R3; The control end of described second electronic switch Q2 is connected with described power input VIN via described 4th resistance R4, and via described function button 10 ground connection, the output of described second electronic switch Q2 is via described 5th resistance R5 ground connection, and the output of described second electronic switch Q2 is connected with described reset output terminal RST with the points of common connection of described 5th resistance R5.
Particularly, described reset control module 40 also comprises the 6th resistance R6 and the 7th resistance R7.
One end of described 6th resistance R6 is connected with the points of common connection of described 4th resistance R4 and described function button 10, and the other end of described 6th resistance R6 is connected with the control end of described second electronic switch Q2; One end of described 7th resistance R7 is connected with the points of common connection of described 5th resistance R5 with the output of described second electronic switch Q2, and the other end of described 7th resistance R7 is connected with described reset output terminal RST.
The voltage signal of 6th resistance R6 to the control end being input to the second electronic switch Q2 carries out current limliting, 7th resistance R7 carries out current limliting to the reset signal exporting master controller to, in addition, the first resistance R1 in charging module 30 also carries out current limliting to the voltage signal of the control end being input to the first electronic switch Q1.
Particularly, described first electronic switch Q1 is NPN triode, and described second electronic switch Q2 is PNP triode.
The base stage of described NPN triode is the control end of described first electronic switch Q1, the input of the very described first electronic switch Q1 of current collection of described NPN triode, the output of the very described first electronic switch Q1 of transmitting of described NPN triode.
The base stage of described PNP triode is the control end of described second electronic switch Q2, the input of the very described second electronic switch Q2 of transmitting of described PNP triode, the output of the very described second electronic switch Q2 of current collection of described PNP triode.
Refer again to Fig. 3, Fig. 3 is the electrical block diagram of another embodiment of the utility model system reset circuit.
Based on the system reset circuit shown in 2, in another embodiment of system reset circuit as shown in Figure 3, with system shown in Figure 2 reset circuit unlike, described in Fig. 3, the first electronic switch Q1 is NMOS tube, and described second electronic switch Q2 is PMOS.
The grid of described NMOS tube is the control end of described first electronic switch Q1, and the drain electrode of described NMOS tube is the input of described first electronic switch Q1, and the source electrode of described NMOS tube is the output of described first electronic switch Q1.
The grid of described PMOS is the control end of described second electronic switch Q2, and the source electrode of described PMOS is the input of described second electronic switch Q2, and the drain electrode of described PMOS is the output of described second electronic switch Q2.
As shown in Figures 2 and 3, the operation principle of the utility model system reset circuit specifically describes as follows:
Under electronic equipment is in running order or in deadlock situation, if function button 10 is pressed, and charging inlet 20 is connected to external recharging apparatus access charge power supply by charging wire, even pin function button 10 with the head of a household, when the charging wire being connected with external recharging apparatus being received charging inlet 20 simultaneously, the charge power supply that then charging inlet 20 inputs passes through electric capacity C1 instantaneously, the RC charge circuit that first resistance R1 forms charges to electric capacity C1, produce charging current, voltage now at the points of common connection A place of electric capacity C1 and the first resistance R1 raises, the control end of the first electronic switch Q1 (i.e. the base stage of NPN triode or the grid of NMOS tube) is made to be high level, first electronic switch Q1 conducting, now the input (i.e. the emitter of PNP or the source electrode of PMOS) of the second electronic switch Q2 obtains bias voltage by the 3rd resistance R3 and the second resistance R2 from power input VIN, the input of the second electronic switch Q2 is high level, and close due to function button 10, the control end (i.e. the base stage of PNP triode or the grid of PMOS) being equivalent to the second electronic switch Q2 receives ground by the 6th resistance R6, the control end of the second electronic switch Q2 is low level, now the second electronic switch Q2 also conducting.Thus, the voltage at the output (i.e. the collector electrode of PNP triode or the drain electrode of PMOS) of the second electronic switch Q2 and the points of common connection B place of the 5th resistance R5 is after the 7th resistance R7 dividing potential drop carries out current limliting, the reset detection end of a voltage signal (i.e. reset signal) to master controller is exported by reset output terminal RST, thus, when master controller detects reset signal by its reset detection end, electronic equipment is resetted, reaches the object of system hard reset.
When after electric capacity C1 charging complete, electric capacity C1 isolates the control end of charging inlet 20 and the first electronic switch Q1, the charge power supply that charging inlet 20 inputs powers to the control end of the first electronic switch Q1, now the control end of the first electronic switch Q1 receives ground by the first resistance R1 is drop-down, first electronic switch Q1 is turned off, thus the second electronic switch Q2 also turns off, electronic equipment homing action completes.
If only have function button 10 to be pressed, when charging inlet 20 is not connected to external recharging apparatus access charge power supply, then the first electronic switch Q1 keeps off state always, second electronic switch Q2 also keeps off state always, now the output of the second electronic switch Q2 and the points of common connection B place of the 5th resistance R5 export without reset signal, other effect when now an electronic equipment practical function button 10 is long pressed, such as, if this function button 10 is when switch, then only realize electronic equipment idle function.
If only have charging inlet 20 to be connected to external recharging apparatus access charge power supply, and function button 10 is not when being long pressed, then the control end of the second electronic switch Q2 obtains bias voltage by the 4th resistance R4 from power input VIN, the control end of the second electronic switch Q2 is high level, second electronic switch Q2 is in off state, thus the first electronic switch Q1 cannot form loop, first electronic switch Q1, second electronic switch Q2 keeps off state, now the output of the second electronic switch Q2 and the points of common connection B place of the 5th resistance R5 export without reset signal, now electronic equipment only realize charging inlet 20 be connected to external recharging apparatus access charge power supply time other effect, such as charge to the battery of electronic equipment.
The utility model also provides a kind of electronic equipment, this electronic equipment master controller and system reset circuit, this system reset circuit is connected with described master controller, for providing reset signal for described master controller, all with reference to above-described embodiment, this is no longer going to repeat them for the circuit structure of system reset circuit, operation principle and the beneficial effect that brings.
Should be noted that; the technical scheme of each embodiment of the present utility model can be combined with each other; but must be can be embodied as basis with those skilled in the art; when technical scheme combination occur conflicting maybe cannot realize time will be understood that the combination of this technical scheme does not exist, also not the utility model require protection range within.
The foregoing is only preferred embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model specification and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (7)
1. a system reset circuit, reset signal is provided for the master controller for electronic equipment, it is characterized in that, described system reset circuit comprises function button, charging inlet, carries out the charging module that charges for the charge power supply inputted according to described charging inlet, and for be pressed at described function button and the charging of described charging module time export the reset control module of reset signal to described master controller;
The input of described charging module is connected with described charging inlet, the output of described charging module is connected with the first input end of described reset control module, second input of described reset control module is connected with described function button, and the output of described reset control module is connected to the reset detection end of described master controller.
2. the system as claimed in claim 1 reset circuit, is characterized in that, described charging module comprises electric capacity and the first resistance;
One end of described electric capacity is connected with described charging inlet, and the other end of described electric capacity is via described first grounding through resistance, and described electric capacity is connected with the first input end of described reset control module with the points of common connection of described first resistance.
3. system reset circuit as claimed in claim 1 or 2, it is characterized in that, described reset control module comprises power input, the first electronic switch, the second electronic switch, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance and reset output terminal;
The control end of described first electronic switch is connected with the output of described charging module, the input of described first electronic switch is connected with described power input via described second resistance, and the output of described first electronic switch is connected with the input of described second electronic switch via described 3rd resistance; The control end of described second electronic switch is connected with described power input via described 4th resistance, and via described function button ground connection, the output of described second electronic switch is via described 5th grounding through resistance, and the output of described second electronic switch is connected with described reset output terminal with the points of common connection of described 5th resistance.
4. system reset circuit as claimed in claim 3, it is characterized in that, described reset control module also comprises the 6th resistance and the 7th resistance;
One end of described 6th resistance is connected with the points of common connection of described 4th resistance and described function button, and the other end of described 6th resistance is connected with the control end of described second electronic switch; One end of described 7th resistance is connected with the points of common connection of the output of described second electronic switch with described 5th resistance, and the other end of described 7th resistance is connected with described reset output terminal.
5. system reset circuit as claimed in claim 4, it is characterized in that, described first electronic switch is NPN triode, and described second electronic switch is PNP triode;
The base stage of described NPN triode is the control end of described first electronic switch, the input of very described first electronic switch of current collection of described NPN triode, the output of very described first electronic switch of transmitting of described NPN triode;
The base stage of described PNP triode is the control end of described second electronic switch, the input of very described second electronic switch of transmitting of described PNP triode, the output of very described second electronic switch of current collection of described PNP triode.
6. system reset circuit as claimed in claim 4, it is characterized in that, described first electronic switch is NMOS tube, and described second electronic switch is PMOS;
The grid of described NMOS tube is the control end of described first electronic switch, and the drain electrode of described NMOS tube is the input of described first electronic switch, and the source electrode of described NMOS tube is the output of described first electronic switch;
The grid of described PMOS is the control end of described second electronic switch, and the source electrode of described PMOS is the input of described second electronic switch, and the drain electrode of described PMOS is the output of described second electronic switch.
7. an electronic equipment, comprises master controller, it is characterized in that, also comprises the system reset circuit in claim 1 to 6 described in any one, and this system reset circuit is connected with described master controller, for providing reset signal for described master controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520408959.9U CN204697033U (en) | 2015-06-12 | 2015-06-12 | System reset circuit and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520408959.9U CN204697033U (en) | 2015-06-12 | 2015-06-12 | System reset circuit and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204697033U true CN204697033U (en) | 2015-10-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520408959.9U Expired - Fee Related CN204697033U (en) | 2015-06-12 | 2015-06-12 | System reset circuit and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204697033U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109844685A (en) * | 2018-12-28 | 2019-06-04 | 福建联迪商用设备有限公司 | A kind of resetting apparatus of time-sharing multiplex, method and terminal |
| CN113419617A (en) * | 2021-07-06 | 2021-09-21 | 上海铼锶信息技术有限公司 | Wearable device charging reset circuit and control method |
| WO2023041303A1 (en) * | 2021-09-16 | 2023-03-23 | Hunter Douglas Industries B.V. | Reset device |
-
2015
- 2015-06-12 CN CN201520408959.9U patent/CN204697033U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109844685A (en) * | 2018-12-28 | 2019-06-04 | 福建联迪商用设备有限公司 | A kind of resetting apparatus of time-sharing multiplex, method and terminal |
| CN113419617A (en) * | 2021-07-06 | 2021-09-21 | 上海铼锶信息技术有限公司 | Wearable device charging reset circuit and control method |
| WO2023041303A1 (en) * | 2021-09-16 | 2023-03-23 | Hunter Douglas Industries B.V. | Reset device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151007 Termination date: 20210612 |