CN218350841U - Reset circuit and electronic device - Google Patents
Reset circuit and electronic device Download PDFInfo
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- CN218350841U CN218350841U CN202222299658.XU CN202222299658U CN218350841U CN 218350841 U CN218350841 U CN 218350841U CN 202222299658 U CN202222299658 U CN 202222299658U CN 218350841 U CN218350841 U CN 218350841U
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Abstract
The utility model discloses a reset circuit and an electronic device, wherein the reset circuit is connected with a function key; wherein, the function button is the button that equipment has configured, and reset circuit includes: the control signal input end is connected with one end of the function key, the other end of the function key is connected with a power supply, the control signal input end outputs a function control signal according to a high level transmitted by the function key, the signal voltage dividing module is electrically connected with the control signal input end, the function control signal is divided to obtain a voltage dividing signal, the reset signal generating module is electrically connected with the signal voltage dividing module, a reset signal is obtained and output after preset duration is charged according to the voltage dividing signal, the reset switch module is electrically connected with the reset signal generating module, the reset signal is switched on and output according to the reset signal, the controller module is electrically connected with the reset switch module and is used for carrying out system reset on equipment according to the reset signal. The utility model discloses can realize resetting the system of product under the condition of not additionally adding the button that resets or the hole that resets more.
Description
Technical Field
The utility model belongs to the technical field of the electronic technology and specifically relates to a reset circuit and electronic equipment are related to.
Background
The reset mechanism is needed to reset after the system of the product is halted, in the related art, a reset hole is independently formed in the product or an additional reset key is arranged to start a reset circuit, but the limited space of the product can be occupied by forming the reset hole or additionally arranging one reset key on the product.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a reset circuit can realize resetting the system of product under the condition that does not additionally add the button that resets or reset the hole more.
The utility model discloses still provide an electronic equipment.
In a first aspect, an embodiment of the present invention provides a reset circuit, which is connected to a function key; wherein, the function key is a key configured by the device, and comprises:
the control signal input end is connected with one end of the function key, the other end of the function key is connected with a power supply, and the control signal input end outputs a function control signal according to a high level transmitted by pressing the function key;
the signal voltage division module is electrically connected with the control signal input end and divides the voltage of the function control signal to obtain a voltage division signal;
the reset signal generation module is electrically connected with the signal voltage division module, and is used for charging according to the voltage division signal for a preset time to obtain and output a reset signal;
the reset switch module is electrically connected with the reset signal generation module, is conducted according to the reset signal and outputs the reset signal;
and the controller module is electrically connected with the reset switch module and is used for carrying out system reset on the equipment according to the reset signal.
The utility model discloses reset circuit has following beneficial effect at least: the control signal input end is connected to a function key originally configured by the equipment, when the function key is pressed down, the power supply is connected into a reset circuit, the power supply continuously transmits a high level to the reset circuit through the control signal input end to output a function control signal, a signal voltage division module divides the function control signal into voltage division signals, a reset signal generation module receives the voltage division signals to charge, the voltage division signals are obtained and output reset signals after the preset charging time, a reset switch module is switched on according to the reset signals and outputs the reset signals to a controller module, the controller module carries out system reset on the equipment according to the reset signals, and the system reset of the product can be realized under the condition that the reset key or the reset hole is not additionally added.
According to the utility model discloses a reset circuit of other embodiments, signal voltage division module includes:
one end of the first voltage-dividing resistor is electrically connected with the function key, and the other end of the first voltage-dividing resistor is electrically connected with the reset signal generation module;
and one end of the second voltage-dividing resistor is electrically connected between the first voltage-dividing resistor and the reset signal generation module, and the other end of the second voltage-dividing resistor is grounded.
According to the utility model discloses a reset circuit of other embodiments, the reset signal generation module includes:
one end of the charging protection resistor is electrically connected with the first voltage dividing resistor, and the other end of the charging protection resistor is electrically connected with the reset switch module;
and one end of the charging capacitor is electrically connected between the charging protection resistor and the reset switch module, and the other end of the charging capacitor is grounded.
According to the utility model discloses a reset circuit of other embodiments, the reset switch module includes:
one end of the switch protection resistor is electrically connected with the charging protection resistor;
and one end of the switch unit is electrically connected with the switch protection resistor, and the other end of the switch unit is electrically connected with the controller module.
According to another embodiment of the present invention, the reset circuit, the switch unit includes any one of the following: an NPN type triode and an NPN type mos tube.
According to the utility model discloses a reset circuit of other embodiments, if the switch unit does the triode, the base electricity of switch unit is connected switch protection resistance, the collecting electrode electricity is connected controller module, projecting pole ground connection.
According to the utility model discloses a reset circuit of other embodiments, reset circuit still includes:
and the key state detection module is electrically connected with the control signal input end and used for detecting whether the control signal input end inputs the function control signal or not and outputting a key state detection signal.
According to the utility model discloses a reset circuit of other embodiments, button state detection module includes:
the signal detection port is electrically connected with the controller module;
one end of the third voltage-dividing resistor is electrically connected with the control signal input end, and the other end of the third voltage-dividing resistor is electrically connected with the signal detection port;
and one end of the fourth voltage-dividing resistor is electrically connected between the third voltage-dividing resistor and the signal detection port, and the other end of the fourth voltage-dividing resistor is grounded.
In a second aspect, an embodiment of the present invention provides an electronic device, including:
function keys;
a reset circuit comprising a reset circuit as described in the first aspect.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
Fig. 1 is a block diagram of a specific embodiment of a reset circuit according to an embodiment of the present invention;
fig. 2 is a block diagram of another embodiment of the reset circuit according to the embodiment of the present invention;
fig. 3 is a schematic circuit diagram of an embodiment of a reset circuit according to the present invention.
The device comprises a power supply 101, a function key 102, a control signal input end 103, a signal voltage division module 104, a reset signal generation module 105, a reset switch module 106 and a controller module 107;
the key state detection module 201.
Detailed Description
The conception and the resulting technical effects of the present invention will be described clearly and completely with reference to the following embodiments, so that the objects, features and effects of the present invention can be fully understood. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive labor based on the embodiments of the present invention all belong to the protection scope of the present invention.
In the description of the present invention, if an orientation description is referred to, for example, the directions or positional relationships indicated by "upper", "lower", "front", "rear", "left", "right", etc. are based on the directions or positional relationships shown in the drawings, it is only for convenience of description of the present invention and simplification of description, but not to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. If a feature is referred to as being "disposed," "secured," "connected," or "mounted" to another feature, it can be directly disposed, secured, or connected to the other feature or be indirectly disposed, secured, connected, or mounted to the other feature.
In the description of the embodiments of the present invention, if "a plurality" is referred to, it means one or more, if "a plurality" is referred to, it means two or more, if "greater than", "less than" or "more than" is referred to, it is understood that the number is not included, and if "greater than", "lower" or "within" is referred to, it is understood that the number is included. References to "first" and "second" are to be understood as distinguishing technical features and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the current design of electronic products, batteries of many electronic products are designed to be non-detachable, and such design needs a function of resetting after a system is halted. The electronic product with the reset function can be stably and reliably reset after the system is halted, the design cost is reduced as much as possible, and the structure ID design of the product is not influenced as much as possible.
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a reset circuit can realize resetting the system of product under the condition that does not additionally add the button that resets or reset the hole more.
Referring to fig. 1, one embodiment of the present invention discloses a block diagram of a reset circuit. The reset circuit is connected with the function key 102; wherein, the function key 102 is a key configured for the device, and the reset circuit includes: the control circuit comprises a control signal input end 103, a signal voltage division module 104, a reset signal generation module 105, a reset switch module 106 and a controller module 107, wherein the control signal input end 103, the signal voltage division module 104, the reset signal generation module 105, the reset switch module 106 and the controller module 107 are all electrically connected.
The control signal input terminal 103 is connected to one end of the function button 102, the other end of the function button 102 is connected to a power supply, and the control signal input terminal outputs a function control signal according to a high level transmitted by the function button 102. The signal voltage division module 104 is electrically connected to the control signal input terminal 103, and divides the voltage of the function control signal to obtain a voltage division signal. The reset signal generation module 105 is electrically connected to the signal voltage division module 104, and obtains and outputs a reset signal after charging for a preset time according to the voltage division signal. The reset switch module 106 is electrically connected to the reset signal generation module 105, and is turned on according to the reset signal to output the reset signal. The controller module 107 is electrically connected to the reset switch module 106, and is configured to perform system reset on the device according to the reset signal.
The control signal input terminal 103 is connected to a function key 102 originally configured in the device, and when the function key 102 is pressed, the power supply 101 is connected to the reset circuit, and the power supply 101 continuously transmits a high level to the reset circuit through the control signal input terminal 103 to output a function control signal. The signal voltage division module 104 divides the voltage of the function control signal to obtain a voltage division signal, the reset signal generation module 105 receives the voltage division signal to charge, and charges to obtain and output a reset signal after a preset time, the reset switch module 106 is switched on according to the reset signal, and outputs the reset signal to the controller module 107, the controller module 107 performs system reset on the equipment according to the reset signal, and the system reset on the product can be realized under the condition that a reset key or a reset hole is not additionally added.
It should be noted that, after receiving the reset signal, the controller module 107 invokes a stored reset program to reset the entire system of the device. Wherein, the reset procedure is the existing procedure.
Referring to fig. 3, one embodiment of the present invention discloses a circuit schematic of a reset circuit. In an embodiment of the present invention, the power source 101 is a 3.3V power source in fig. 3, the function button 102 is an S1 switch in fig. 3, and the control signal input terminal 103 is a point a port in fig. 3.
In an embodiment of the present invention, referring to fig. 3, the signal voltage dividing module 104 includes: a first voltage dividing resistor and a second voltage dividing resistor. One end of the first voltage dividing resistor is electrically connected to the function button 102, and the other end is electrically connected to the reset signal generating module 105. One end of the second voltage-dividing resistor is electrically connected between the first voltage-dividing resistor and the reset signal generation module 105, and the other end is grounded.
The first voltage-dividing resistor is the R2 resistor in fig. 3, and the second voltage-dividing resistor is the R5 resistor in fig. 3.
In an embodiment of the present invention, referring to fig. 3, the reset signal generating module 105 includes: a charge protection resistor and a charge capacitor. One end of the charging protection resistor is electrically connected to the first voltage dividing resistor, and the other end is electrically connected to the reset switch module 106. One end of the charging capacitor is electrically connected between the charging protection resistor and the reset switch module 106, and the other end is grounded.
Note that the charge protection resistor is an R3 resistor in fig. 3, and the charge capacitor is a C1 capacitor in fig. 3.
In an embodiment of the present invention, referring to fig. 3, the reset switch module 106 includes: a switch protection resistor and a switch unit. One end of the switch protection resistor is electrically connected with the charging protection resistor. One end of the switch unit is electrically connected with the switch protection resistor, and the other end is electrically connected with the controller module 107.
The switch protection resistor is an R4 resistor in fig. 3.
In an embodiment of the present invention, the switch unit includes any one of the following: an NPN type triode and an NPN type mos tube.
In an embodiment of the present invention, referring to fig. 3, the switch unit is a triode, the base of the switch unit is electrically connected to the switch protection resistor, the collector is electrically connected to the controller module 107, and the emitter is grounded.
It should be noted that the switching unit is a transistor Q1 in fig. 3.
The collector of the switch unit is also electrically connected with one end of a resistor R6, and the other end of the resistor R6 is also connected with a 3.3V power supply.
Referring to fig. 2, one embodiment of the present invention discloses a block diagram of a reset circuit. The reset circuit further includes: and the key state detection module 201, the key state detection module 201 being electrically connected to the control signal input terminal 103, and configured to detect whether the control signal input terminal 103 inputs a function control signal and output a key state detection signal.
It should be noted that the function control signal is respectively input to the signal voltage dividing module 104 and the key state detecting module 201 through the control signal input terminal 103, the function control signal is divided by the key state detecting module 201 to obtain a key state detecting signal, the key state detecting signal is input to the controller module 107, and the controller module 107 detects the key state detecting signal to obtain corresponding key state information.
After receiving the key state detection signal, the controller module 107 invokes a stored detection program to detect the key state detection signal. Wherein, the detection program is an existing program.
In an embodiment of the present invention, referring to fig. 3, the button status detecting module 201 includes: a signal detection port, a third voltage dividing resistor and a fourth voltage dividing resistor, wherein the signal detection port is electrically connected with the controller module 107. One end of the third voltage-dividing resistor is electrically connected with the control signal input end, and the other end of the third voltage-dividing resistor is electrically connected with the signal detection port. One end of the fourth voltage dividing resistor is electrically connected between the third voltage dividing resistor and the signal detection port, and the other end of the fourth voltage dividing resistor is grounded.
It should be noted that the signal detection port is a point B port in fig. 3, the third voltage dividing resistor is a resistor R1 in fig. 3, and the fourth voltage dividing resistor is a resistor R7 in fig. 3.
In an embodiment of the present invention, referring to fig. 2 and 3, the R1 resistor and the R2 resistor divide the 3.3V voltage signal input after the S1 switch is pressed into two paths, and one path is input to the key state detection module 201 for detecting the key state; the other path is input to a signal dividing module 104 for resetting the system. The principle for key state detection includes: the 3.3V voltage signal is divided by the R1 resistor and the R7 resistor to obtain a key state detection signal, and if the S1 switch is not continuously and stably pressed for a time of approximately 10 seconds, the controller module 107 performs the original function of the function key 102 according to the information obtained by detecting the key state detection signal, and does not trigger the reset function. If the S1 switch is continuously and stably pressed for approximately 10 seconds, the controller module 107 performs a reset function according to the information detected by the key state detection signal, and does not trigger the original function of the function key 102.
The principles for performing a system reset include: the 3.3V voltage signal is divided by the R2 resistor and the R5 resistor, the divided voltage signal charges the C1 capacitor through the R3 resistor, the value of the R5 resistor and the value of the R3 resistor are adjusted, the C1 capacitor is fully charged within 10 seconds, and the C1 capacitor and the R4 resistor form a 0.7V voltage signal, namely a reset signal. The voltage signal of 0.7V makes the transistor Q1 conduct, and pulls the pins of the reset switch module 106 and the controller module 107 low, so as to further reset the system of the device, where the pins of the reset switch module 106 and the controller module 107 are the IC reset pins.
On the premise of not changing the structure ID of the reset circuit and not adding a new key or a reset hole, the reset function is realized by adding the reset circuit to the original function key 102 in the reset circuit, one original function key 102 is designed to be a key with a multiplexing function, one function is the original event function of the function key 102, the other function is the system reset function, and the time for pressing the function key 102 can be further adjusted by adjusting the parameters of the resistor and the capacitor in the reset circuit so as to generate a reset signal.
An embodiment of the utility model discloses an electronic equipment, electronic equipment includes: function keys and a reset circuit, the reset circuit being the reset circuit in the above-described embodiments.
The above-described embodiments of the apparatus are merely illustrative, wherein the units illustrated as separate components may or may not be physically separate, i.e. may be located in one place, or may also be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
One of ordinary skill in the art will appreciate that all or some of the steps, systems, and methods disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as is well known to those of ordinary skill in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art. Furthermore, the embodiments of the present invention and features of the embodiments may be combined with each other without conflict.
Claims (9)
1. A reset circuit is connected with a function key; wherein, the function button is the button that equipment has configured, its characterized in that includes:
the control signal input end is connected with one end of the function key, the other end of the function key is connected with a power supply, and the control signal input end outputs a function control signal according to a high level transmitted by pressing the function key;
the signal voltage division module is electrically connected with the control signal input end and divides the voltage of the function control signal to obtain a voltage division signal;
the reset signal generation module is electrically connected with the signal voltage division module and used for charging according to the voltage division signal for a preset time to obtain and output a reset signal;
the reset switch module is electrically connected with the reset signal generation module, is switched on according to the reset signal and outputs the reset signal;
and the controller module is electrically connected with the reset switch module and is used for carrying out system reset on the equipment according to the reset signal.
2. The reset circuit of claim 1, wherein the signal voltage division module comprises:
one end of the first voltage-dividing resistor is electrically connected with the function key, and the other end of the first voltage-dividing resistor is electrically connected with the reset signal generation module;
and one end of the second voltage-dividing resistor is electrically connected between the first voltage-dividing resistor and the reset signal generation module, and the other end of the second voltage-dividing resistor is grounded.
3. The reset circuit of claim 2, wherein the reset signal generation module comprises:
one end of the charging protection resistor is electrically connected with the first voltage-dividing resistor, and the other end of the charging protection resistor is electrically connected with the reset switch module;
and one end of the charging capacitor is electrically connected between the charging protection resistor and the reset switch module, and the other end of the charging capacitor is grounded.
4. The reset circuit of claim 3, wherein the reset switch module comprises:
one end of the switch protection resistor is electrically connected with the charging protection resistor;
and one end of the switch unit is electrically connected with the switch protection resistor, and the other end of the switch unit is electrically connected with the controller module.
5. The reset circuit of claim 4, wherein the switching unit comprises any one of: an NPN type triode and an NPN type mos tube.
6. The reset circuit of claim 5, wherein if the switching unit is the triode, a base of the switching unit is electrically connected to the switch protection resistor, a collector of the switching unit is electrically connected to the controller module, and an emitter of the switching unit is grounded.
7. The reset circuit of claim 1, further comprising:
and the key state detection module is electrically connected with the control signal input end and is used for detecting whether the control signal input end inputs the function control signal or not and outputting a key state detection signal.
8. The reset circuit of claim 7, wherein the key state detection module comprises:
the signal detection port is electrically connected with the controller module;
one end of the third voltage-dividing resistor is electrically connected with the control signal input end, and the other end of the third voltage-dividing resistor is electrically connected with the signal detection port;
and one end of the fourth voltage-dividing resistor is electrically connected between the third voltage-dividing resistor and the signal detection port, and the other end of the fourth voltage-dividing resistor is grounded.
9. An electronic device, characterized in that the electronic device comprises:
function keys;
a reset circuit comprising the reset circuit of any of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222299658.XU CN218350841U (en) | 2022-08-30 | 2022-08-30 | Reset circuit and electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222299658.XU CN218350841U (en) | 2022-08-30 | 2022-08-30 | Reset circuit and electronic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218350841U true CN218350841U (en) | 2023-01-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222299658.XU Active CN218350841U (en) | 2022-08-30 | 2022-08-30 | Reset circuit and electronic device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218350841U (en) |
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2022
- 2022-08-30 CN CN202222299658.XU patent/CN218350841U/en active Active
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