CN220964851U - Reset circuit and electric equipment - Google Patents

Abstract

The application provides a reset circuit and electric equipment, comprising: the device comprises a power supply module, a watchdog module, a switch module, a touch control module, a first energy storage capacitor, a second energy storage capacitor and a main control module; the power module is electrically connected with the switch module and the touch control module; the first energy storage capacitor is respectively and electrically connected with the switch module, the touch control module and the main control module, and the switch module is electrically connected with the watchdog module and the main control module; the main control module is electrically connected with the second energy storage capacitor and the watchdog module, and the second energy storage capacitor is electrically connected with the watchdog module. The switch module is closed through the manually controlled touch control module, so that the power supply module supplies power to the watchdog through the closed switch, and the phenomenon that the watchdog cannot run due to power failure is avoided. And when the program in the main control module is deviated and the IO port is not controlled, the energy storage capacitor in the circuit is utilized to realize automatic reset. In addition, different reset time can be set, and the function of resetting quickly after program deviation is realized without resetting for a long time when the program is burnt.

Description

Reset circuit and electric equipment

Technical Field

The application relates to the technical field of circuits, in particular to a reset circuit and electric equipment.

Background

Some devices in the prior art adopt a software watchdog to monitor program operation, but the software watchdog cannot always ensure that the program is blocked 100% or the program enters a dead loop, and then trigger the system to reset. Therefore, in order to overcome this problem in the prior art, hardware watchdog circuits have been developed, and the hardware watchdog circuits are classified into two types, manual reset and automatic reset. For manual reset solutions, the advantage is reliable, but the disadvantage is that manual operation is required, which reduces the production efficiency in an automated production process. For the scheme of automatic reset, the device has the advantages of high efficiency, but the defect of lacking in setting of reset time, namely, how long the device can reset after feeding dogs, and a plurality of inconveniences can be brought in the production process.

However, after the automatic reset is powered down, the program cannot be reset. Meanwhile, when the reset is automatically performed, the problem of lack of reset time setting exists. Therefore, the problem that the watchdog circuit cannot be reset when power is lost needs to be solved.

Disclosure of utility model

The application provides a reset circuit, which solves the problem that in the reset process, the MCU and a watchdog are powered down due to uncontrollable state of an IO port of the MCU, so that the reset is failed.

In a first aspect, the present application provides a reset circuit, the circuit comprising:

The device comprises a power supply module, a watchdog module, a switch module, a touch control module, a first energy storage capacitor, a second energy storage capacitor and a main control module;

The power module is electrically connected with the switch module and the touch module respectively; the first energy storage capacitor is respectively and electrically connected with the switch module, the touch control module and the main control module, and the switch module is respectively and electrically connected with the watchdog module and the main control module; the main control module is respectively and electrically connected with the second energy storage capacitor and the watchdog module, and the second energy storage capacitor is electrically connected with the watchdog module.

In some embodiments of the present application, the touch module includes:

a touch chip and a touch key;

The touch key is electrically connected with the touch chip; the power module is electrically connected with the touch chip; the touch chip is electrically connected with the switch module.

In some embodiments of the present application, the touch module further includes:

The first filter module comprises a first filter resistor, a first filter capacitor and a second filter capacitor, and the second filter module comprises a second filter resistor and a third filter capacitor;

The touch key is electrically connected with the first end of the second filter resistor, the second end of the second filter resistor is electrically connected with the first end of the third filter capacitor, and the second end of the second filter resistor and the first end of the third filter capacitor are respectively electrically connected with the touch chip;

The power module is electrically connected with the first end of the first filter resistor, and the first end of the first filter resistor and the first end of the second filter resistor are respectively electrically connected with the second end of the first filter resistor; the first end of the first filter resistor, the first end of the second filter resistor and the second end of the first filter resistor are respectively and electrically connected with the touch chip.

In some embodiments of the application, the switch module comprises:

the device comprises a first mos tube, a second mos tube, a protection resistor and a first discharge resistor;

The touch module is electrically connected with the first end of the protection resistor, and the second end of the protection resistor is electrically connected with the first interface of the first mos tube;

The first end of the first discharging resistor and the first end of the first energy storage capacitor are respectively and electrically connected with the first end of the protection resistor, and the second end of the first discharging resistor and the second end of the first energy storage capacitor are respectively and electrically connected with the second interface of the first mos tube;

the first interface of the second mos tube is electrically connected with the third interface of the first mos tube respectively;

the second interface of the second mos tube is electrically connected with the power module, and the third interface of the second mos tube is electrically connected with the watchdog module.

In some embodiments of the application, the circuit further comprises:

A charging module; the charging module is electrically connected with the first end of the protection resistor.

In some embodiments of the present application, the main control module is electrically connected to the first end of the protection resistor.

In some embodiments of the application, the circuit further comprises:

The charging module and the main control module;

The charging module is electrically connected with the first end of the protection resistor; the main control module is electrically connected with the first end of the protection resistor.

In some embodiments of the application, the watchdog module comprises:

A watchdog chip, a third mos transistor and a fourth filter capacitor;

The first end of the fourth filter capacitor and the watchdog chip are respectively and electrically connected with the switch module;

the second end of the fourth filter capacitor is electrically connected with the watchdog chip;

The first interface of the third mos transistor is electrically connected with the second end of the fourth filter capacitor, and the second interface of the third mos transistor is electrically connected with the watchdog chip.

In some embodiments of the application, the circuit further comprises:

A second discharge resistor;

The watchdog chip and the switch module are respectively and electrically connected with the main control module;

The main control module, the first end of the second energy storage capacitor and the first end of the second discharge resistor are respectively and electrically connected with a third interface of the third mos tube;

And the second end of the second energy storage capacitor and the second end of the second discharge resistor are respectively and electrically connected with the first interface of the third mos tube.

In a second aspect, an embodiment of the present application further provides an electrical apparatus, where the electrical apparatus is equipped with a reset circuit according to any one of the above.

According to the reset circuit provided by the application, the manual closing of the switch module is further realized through the manually controlled touch control module, so that the power supply module can supply power to the watchdog module through the closed switch module, and the problem that the watchdog module cannot operate after power failure is avoided. Meanwhile, when the program in the main control module is deviated and the state of the IO port is not controlled, the energy storage capacitor in the circuit is utilized to realize the process of automatic reset. In addition, the circuit can also set functions of different reset time, and can meet the functions of long-time non-reset during burning and quick reset after program runaway.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a reset circuit according to an embodiment of the present application;

FIG. 2 is a schematic diagram of a reset circuit according to an embodiment of the present application;

FIG. 3 is a schematic diagram of a reset circuit according to an embodiment of the present application;

FIG. 4 is a schematic diagram of a reset circuit according to an embodiment of the present application;

FIG. 5 is a schematic diagram of a reset circuit according to an embodiment of the present application;

FIG. 6 is a schematic diagram of a reset circuit according to an embodiment of the present application;

FIG. 7 is a schematic diagram of a reset circuit according to an embodiment of the present application;

FIG. 8 is a schematic diagram of a reset circuit according to an embodiment of the present application;

FIG. 9 is a schematic diagram of a reset circuit according to an embodiment of the present application;

Fig. 10 is a schematic structural diagram of an electric device according to an embodiment of the present application.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to fall within the scope of the application.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more features. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present application, the term "exemplary" is used to mean "serving as an example, instance, or illustration. Any embodiment described as "exemplary" in this disclosure is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is presented to enable any person skilled in the art to make and use the application. In the following description, details are set forth for purposes of explanation. It will be apparent to one of ordinary skill in the art that the present application may be practiced without these specific details. In other instances, well-known structures and processes have not been described in detail so as not to obscure the description of the application with unnecessary detail. Thus, the present application is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein.

As shown in fig. 1, fig. 1 is a reset circuit provided by the present application, the circuit includes:

The device comprises a power module 101, a watchdog module 201, a switch module 301, a touch module 401, a first energy storage capacitor C4, a second energy storage capacitor C7 and a main control module 601; the power module 101 is electrically connected with the switch module 301 and the touch module 401 respectively; the first energy storage capacitor C4 is respectively and electrically connected with the switch module 301, the touch module 401 and the main control module 601, and the switch module 301 is respectively and electrically connected with the watchdog module 201 and the main control module 601; the main control module 601 is electrically connected with the second energy storage capacitor C7 and the watchdog module 201, and the second energy storage capacitor C7 is electrically connected with the watchdog module 201.

In the embodiment of the present application, when a related worker manually touches the touch module 401 by a finger, for example, when the touch screen determines that there is a finger touch, the touch module 401 may send a high level to the switch module 301, so that the switch module 301 is turned on, and the power module 101 may smoothly supply power to the watchdog module 201.

Meanwhile, the power module 101 is electrically connected with the touch module 401, so that the power module 101 can supply power to the touch module 401 at the same time.

It should be noted that, the power module 101 in the present embodiment may be any type of power supply device, such as a mobile power supply or a fixed power supply, and the specific embodiment of the present application is not limited thereto; the switch module 301 may be any existing switch circuit, and the specific embodiment of the present application is not limited; the watchdog module 201 may be any existing watchdog circuit, and the specific embodiment of the present application is not limited; meanwhile, the touch module 401 may be any existing touch circuit, and the specific embodiment of the present application is not limited as well.

In addition, it should be emphasized that, after the program in the main control module 601 is deviated, the switch module 301 is continuously powered on due to the first energy storage capacitor C4, so that the switch module 301 can be kept on, the power module can supply power to the watchdog, and the watchdog can ensure automatic reset of the main control module 601. And when the master control module 601 does not control the watchdog chip, the second reset time of the watchdog chip is longer, and the time is suitable for the burning of the master control module 601. When the main control module 601 burns, the code can control the reset time of the watchdog chip, for example, 1 second, and after the program is deflected, 1 second, the code can be reset. In the resetting process, the first energy storage capacitor C4 can ensure that the resetting process is uninterrupted.

According to the reset circuit provided by the application, the manual closing of the switch module is further realized through the manually controlled touch control module, so that the power supply module can supply power to the watchdog module through the closed switch module, and the problem that the watchdog module cannot operate after power failure is avoided. Meanwhile, when the program in the main control module is deviated and the state of the IO port is not controlled, the energy storage capacitor in the circuit is utilized to realize the process of automatic reset. In addition, the circuit can also set functions of different reset time, and can meet the functions of long-time non-reset during burning and quick reset after program runaway.

The embodiment provides an implementation manner of manually powering the watchdog module 201 through the existing touch circuit, and the embodiment of the application provides other implementation structures of the touch module 401. As shown in fig. 2, fig. 2 is a schematic diagram of another reset circuit provided in the present application, and a touch module 401 includes:

A touch chip 411 and a touch key 412; the touch key 412 is electrically connected with the touch chip 411; the power module 101 is electrically connected with the touch chip 411; the touch chip 411 is electrically connected to the switch module 301.

It should be noted that, in the embodiment of the present application, the TOG pin of the touch chip 411 may be electrically connected to a resistor R1 and then grounded. And R1 is electrically connected with the touch chip 411 and then grounded, and can be used as a mode control resistor.

In order to make the current of the power module 101 when powering the touch module 401 more stable, as shown in fig. 3, fig. 3 provides another reset circuit for the present application, where the touch module 401 further includes:

The first filter module 413 and the second filter module 414, the first filter module 413 includes a first filter resistor R2, a first filter capacitor C1 and a second filter capacitor C2, and the second filter module 414 includes a second filter resistor R3 and a third filter capacitor C3. The touch key 412 is electrically connected to the first end of the second filter resistor R3, the second end of the second filter resistor R3 is electrically connected to the first end of the third filter capacitor C3, and the second end of the second filter resistor R3 and the first end of the third filter capacitor C3 are respectively electrically connected to the touch chip 411; the power module 101 is electrically connected with a first end of the first filter resistor R2, and a first end of the first filter resistor R2 and a first end of the second filter resistor R3 are respectively electrically connected with a second end of the first filter resistor R2; the first end of the first filter resistor R2, the first end of the second filter resistor R3, and the second end of the first filter resistor R2 are electrically connected to the touch chip 411, respectively.

In the embodiment of the application, when a worker touches the touch key 412 by a finger, R3 and C3 can form a low-pass filter circuit for touch anti-interference, different capacitance values of C3 have influence on the sensitivity of the modulated touch key, and the value of C3 is reasonably selected according to the structural arrangement, so that the high-sensitivity touch experience can be obtained. Meanwhile, R2, C1 and C2 can be used as RC filter circuits to provide cleaner power to the touch chip 411.

The embodiment provides an implementation manner of manually powering the watchdog module 201 through the existing switch circuit, and the embodiment of the application also provides other implementation structures of the switch module 301. As shown in fig. 4, fig. 4 is a schematic diagram of another reset circuit provided in the present application, and the switch module 301 includes:

A first mos tube 311, a second mos tube 312, a protection resistor R4, and a first discharge resistor R5; the touch module 401 is electrically connected with the first end of the protection resistor R4, and the second end of the protection resistor R4 is electrically connected with the first interface of the first mos tube 311; the first end of the first discharging resistor R5 and the first end of the first energy storage capacitor C4 are respectively and electrically connected with the first end of the protection resistor R4, and the second end of the first discharging resistor R5 and the second end of the first energy storage capacitor C4 are respectively and electrically connected with the second interface of the first mos tube 311; the power module 101 and the first interface of the second mos tube 312 are electrically connected with the third interface of the first mos tube 311, respectively; the second interface of the second mos tube 312 is electrically connected to the power module 101, and the third interface of the second mos tube 312 is electrically connected to the watchdog module 201.

In the embodiment of the present application, when a finger presses the touch module 401, the touch module 401 can output a high level through the OC pin of the touch chip 411, i.e. the OC pin of the touch chip 411 can be electrically connected with the first end of the resistor R5. Thus, when the touch chip 411 outputs a high level, the G-pole potential of the first mos transistor 311 may be made greater than the source potential and the on condition is satisfied, resulting in the first mos transistor 311 being turned on. Similarly, the second mos tube 312 is turned on, and the power module 101 communicates with the watchdog module 201, so that the watchdog module 201 is powered. It should be noted that a rectifier diode may be disposed between the OC pin of the touch chip 411 and the first end of the resistor R5. Meanwhile, the third interface of the first mos tube 311 may be electrically connected to the first end of a protection resistor R6, and the second end of the protection resistor R6 is electrically connected to the second interfaces of the power module 101 and the second mos tube 312.

The above embodiment provides a circuit structure of the switch module 301, and the embodiment of the present application may also provide other structures of the switch module 301, so that the switch module 301 can be turned on in other manners. As shown in fig. 5, fig. 5 is a schematic diagram of another reset circuit according to the present application, where the circuit further includes:

A charging module 501; the charging module 501 is electrically connected to a first terminal of the protection resistor R4.

In an embodiment of the present application, the charging module 501 may be a charger. When the charger is inserted, the G-pole potential of the first mos transistor 311 is higher than the source potential and exceeds the threshold turn-on voltage, so that the G-pole potential of the first mos transistor 311 is higher than the source potential and satisfies the turn-on condition, resulting in the conduction of the first mos transistor 311. Similarly, the second mos tube 312 is turned on, and the power module 101 communicates with the watchdog module 201, so that the watchdog module 201 is powered.

The above embodiment provides a circuit structure of the switch module 301, and the embodiment of the present application may also provide other structures of the switch module 301, so that the switch module 301 can be turned on in other manners. As shown in fig. 6, fig. 6 is a schematic diagram of another reset circuit provided in the present application, and the main control module 601 is electrically connected to the first end of the protection resistor R4.

In the embodiment of the present application, the main control module 601 may be a single chip microcomputer MCU. In addition, in the embodiment of the present application, the power module 101 may be electrically connected to the main control module 601, so that the power module 101 supplies power to the main control module 601. When the main control module 601 is powered on, the main control module 601 can input a high level to the switch module 301 to maintain or make the G-pole potential of the first mos transistor 311 higher than the source potential and exceed the threshold on voltage, so that the G-pole potential of the first mos transistor 311 is higher than the source potential and meets the on condition, resulting in the first mos transistor 311 being turned on. Similarly, the second mos tube 312 is turned on, and the power module 101 communicates with the watchdog module 201, so that the watchdog module 201 is powered.

The above embodiment provides a circuit structure of the switch module 301, and the embodiment of the present application may also provide other structures of the switch module 301, so that the switch module 301 can be turned on in other manners. As shown in fig. 7, fig. 7 is a schematic diagram of another reset circuit according to the present application, where the circuit further includes:

A charging module 501 and a main control module 601; the charging module 501 is electrically connected with the first end of the protection resistor R4; the main control module 601 is electrically connected with the first end of the protection resistor R4.

Based on the above embodiments, the present application provides an embodiment in which the charging module 501 and the main control module 601 are connected to the switch module 301 at the same time. The principle of the present embodiment is the same as that of the above embodiment, and a detailed description thereof will be omitted.

The embodiment provides an implementation manner of implementing the reset function through the existing watchdog module 201, and the embodiment of the application provides other implementation structures of the watchdog module 201. As shown in fig. 8, fig. 8 is a schematic diagram of another reset circuit provided in the present application, and a watchdog module 201 includes:

A watchdog chip 211, a third mos transistor 213, and a fourth filter capacitor C6; the first end of the fourth filter capacitor C6 and the watchdog chip 211 are electrically connected to the switch module 301 respectively; the second end of the fourth filter capacitor C6 is electrically connected with the watchdog chip 211; the first interface of the third mos transistor 213 is electrically connected to the second terminal of the fourth filter capacitor C6, and the second interface of the third mos transistor 213 is electrically connected to the watchdog chip 211.

It should be noted that, in the embodiment of the present application, the GND pin of the watchdog chip 211 may be electrically connected to the second end of the fourth filter capacitor C6 and then grounded, and the fourth filter capacitor C6 is used as the filter capacitor of the power module 101, so that the current obtained by the watchdog chip 211 is cleaner. Meanwhile, the GND pin of the watchdog chip 211 may be electrically connected to a protection resistor R11, and then electrically connected to the second end of the fourth filter capacitor C6 through the resistor R11 and grounded. In addition, a protection resistor R7 may be disposed between the second interface of the third mos transistor 213 and the watchdog chip 211. Meanwhile, the second interface of the third mos tube 213 may be grounded. Also, the RSTn pin, the WAKE pin, and the DONE pin of the watchdog chip 211 may be electrically connected with the main control module 601. Specifically, the RSTn pin of the watchdog chip 211 is a watchdog feeding instruction pin of the MCU, and the WAKE pin of the watchdog chip 211 is connected to the input IO of the MCU, when the 5 pin of the watchdog chip sends out a WAKE signal, this means that the MCU needs to feed the watchdog chip with a dog, and if the watchdog chip is not fed for a certain time, the watchdog chip is triggered to send out a reset instruction to the MCU. The DONE pin of the watchdog chip 211 is a reset signal for the watchdog chip to output to the MCU. Meanwhile, a third interface of the third mos tube 213 may be electrically connected to the main control module 601 and grounded. In addition, the power module 101 is electrically connected to the watchdog chip 211 and then electrically connected to the main control module 601. Specifically, the power module 101 is electrically connected to a protection resistor R9, and meanwhile, the RSTn pin of the watchdog chip 211 is electrically connected to the main control module 601.

In the foregoing embodiment, an implementation structure of the watchdog module 201 is provided to implement a reset function, and the embodiment of the present application further provides other implementation structures of the watchdog module 201, so as to avoid that the watchdog module 201 can still work when power is temporarily lost. As shown in fig. 9, fig. 9 is a schematic diagram of another reset circuit provided in the present application, and the watchdog module 201 further includes:

A second discharge resistor R9; the watchdog chip 211 and the switch module 301 are respectively and electrically connected with the main control module 601; the main control module 601, the first end of the second energy storage capacitor C7 and the first end of the second discharging resistor R9 are respectively and electrically connected with the third interface of the third mos tube 213; the second end of the second energy storage capacitor C7 and the second end of the second discharge resistor R9 are electrically connected to the first interface of the third mos transistor 213, respectively.

It should be noted that, in the embodiment of the present application, a rectifier diode may be disposed between the pin electrically connected to the main control module 601 and the third interface of the third mos tube 213, and the R7, R11 and the third mos tube 213 together form a parallel circuit, so as to realize control of two reset times. When the MCU is an empty chip (no program is burned), the pin electrically connected to the main control module 601 by the third interface of the third mos tube 213 is in a suspended state, and the third mos tube 213 is not turned on, so that only the R11 resistor is the only resistor for setting the reset time, and the reset time of the watchdog chip 211 can be set to several minutes or even several hours by selecting a suitable R8 parameter, as long as the time is longer than the time of the program for burning the MCU, a reset signal is not generated when the MCU is reset, resulting in a failure of burning. After the MCU burns the program, the program can control the third interface of the third mos tube 213 to output a high level with the pin electrically connected to the main control module 601, so that the third mos tube 213 is turned on, and the parallel resistance value of R7 and R11 is used as a resistance for setting the reset time. Meanwhile, the MCU can normally monitor the peripheral equipment. When the MCU is halted, the pin state of the third interface of the third mos tube 213 electrically connected to the main control module 601 is uncertain, and may be high, low, or suspended. When the watchdog chip is high, the watchdog chip sends a reset instruction to the MCU to prompt the MCU to reset if the watchdog chip does not send a dog feeding instruction for a short time; when the pin level of the third interface of the third mos tube 213 electrically connected to the main control module 601 is low, since the energy storage capacitor C7 can maintain the voltage of the third mos tube 213 conducted for a period of time, the reset time of the watchdog chip is still controlled by the resistance value after the parallel connection of R7 and R11, so that a reset signal can be generated to the MCU in a short time, and the MCU is prompted to reset; when the pin electrically connected to the main control module 601 by the third interface of the third mos tube 213 is suspended, the principle is the same as that the pin electrically connected to the main control module 601 by the third interface of the third mos tube 213 is at a low level. The rectifier diode between the third interface of the third mos tube 213 and the pin electrically connected to the main control module 601 has the function that when the pin electrically connected to the main control module 601 by the third interface of the third mos tube 213 is low or suspended, the electric quantity of the capacitor cannot be poured into the MCU end, so that the capacitor is prevented from discharging too fast, and the conduction of the third mos tube 213 cannot be maintained before a reset instruction is sent, so that the reset fails. R10 is used as a current limiting resistor to protect the third mos tube 213 from large current impact, and meanwhile, the driving strength requirement of the MCU is reduced. R9 serves as a discharge resistor of the gate source of the third mos tube 213 and C7, and discharges the excess electric power of the third mos tube 213, so that the third mos tube 213 is prevented from being easily broken down. R8 is used as a pull-up resistor at the moment, when the watchdog chip does not send out a reset instruction, a reset pin connected to the MCU is in a high level by default, so that the MCU cannot enter a reset state.

In addition, the embodiment of the application also provides electric equipment, which comprises a main control board, a memory and a computer program which is stored in the memory and can run on the main control board, wherein the main control board executes the computer program. The electric device may be any electric device provided by the embodiment of the present application, as shown in fig. 10, which shows a schematic structural diagram of the electric device according to the embodiment of the present application, specifically:

The powered device may include a main control board 10 of one or more processing cores, a memory 11 of one or more computer readable storage media, a power supply 12, and an input unit 13, among other components. It will be appreciated by those skilled in the art that the powered device structure shown in fig. 10 is not limiting of the powered device and may include more or fewer components than shown, or may combine certain components, or may be a different arrangement of components. Wherein:

The main control board 10 is a control center of the electric equipment, and is connected with various parts of the whole electric equipment by various interfaces and lines, and executes various functions and processing data of the electric equipment by running or executing software programs and/or modules stored in the memory 11 and calling data stored in the memory 11, so as to perform overall monitoring on the electric equipment. Optionally, the main control board 10 may include one or more processing cores; the main control board 10 may be a central processing unit (Central Processing Unit, CPU), but may also be other general purpose main control boards, digital signal main control boards (DIGITAL SIGNAL Processor, DSP), application SPECIFIC INTEGRATED Circuit (ASIC), off-the-shelf Programmable gate array (Field-Programmable GATE ARRAY, FPGA) or other Programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general master control board may be a micro master control board or any conventional master control board, etc., preferably, the master control board 10 may integrate an application master control board and a modem master control board, where the application master control board mainly processes an operating system, the user interface is an interface and an application program, etc., and the modem master control board mainly processes wireless communication. It will be appreciated that the modem host board may not be integrated into the host board 10.

The memory 11 may be used to store software programs and modules, and the main control board 10 performs various functional applications and data processing by running the software programs and modules stored in the memory 11. The memory 11 may mainly include a storage program area which may store an operating system, application programs required for at least one function, and the like, and a storage data area; the storage data area may store data created according to the use of the powered device, etc. In addition, memory 11 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage device. Accordingly, the memory 11 may also include a memory controller to provide access to the memory 11 by the main control board 10.

The electric equipment further comprises a power supply 12 for supplying power to each component, and preferably, the power supply 12 can be logically connected with the main control board 10 through a power management system, so that functions of managing charging, discharging, power consumption management and the like are realized through the power management system. The power supply 12 may also include one or more of any of a direct current or alternating current power supply, a recharging system, a power failure detection circuit, a power converter or inverter, a power status indicator, and the like.

The powered device may further comprise an input unit 13, which input unit 13 may be used for receiving entered numerical or character information and for generating keyboard, mouse, joystick, optical or trackball signal inputs in connection with user settings and function control.

Although not shown, the powered device may further include a display unit, etc., and will not be described in detail herein. In this embodiment, the main control board 10 in the electric device loads executable files corresponding to the processes of one or more application programs into the memory 11 according to the following instructions, and the main control board 10 runs the application programs stored in the memory 11, so as to implement various functions.

It will be appreciated by those of ordinary skill in the art that all or part of the steps of the above embodiments may be performed by instructions or by controlling associated hardware by instructions, which may be stored in a computer readable storage medium and loaded and executed by a main control board.

In the foregoing embodiments, the descriptions of the embodiments are focused on, and the portions of one embodiment that are not described in detail in the foregoing embodiments may be referred to in the foregoing detailed description of other embodiments, which are not described herein again.

In the implementation, each unit or structure may be implemented as an independent entity, or may be implemented as the same entity or several entities in any combination, and the implementation of each unit or structure may be referred to the foregoing embodiments and will not be repeated herein.

The specific implementation of each operation above may be referred to the previous embodiments, and will not be described herein.

The foregoing describes in detail a powered device provided by an embodiment of the present application, and specific examples are applied to illustrate principles and embodiments of the present application, where the foregoing description of the embodiment is only for helping to understand the scheme and core idea of the present application; meanwhile, as those skilled in the art will vary in the specific embodiments and application scope according to the ideas of the present application, the present description should not be construed as limiting the present application in summary.

Claims (10)

1. A reset circuit, the circuit comprising:

The device comprises a power supply module, a watchdog module, a switch module, a touch control module, a first energy storage capacitor, a second energy storage capacitor and a main control module;

The power module is electrically connected with the switch module and the touch module respectively; the first energy storage capacitor is respectively and electrically connected with the switch module, the touch control module and the main control module, and the switch module is respectively and electrically connected with the watchdog module and the main control module; the main control module is respectively and electrically connected with the second energy storage capacitor and the watchdog module, and the second energy storage capacitor is electrically connected with the watchdog module.

2. The reset circuit of claim 1 wherein the touch module comprises:

a touch chip and a touch key;

The touch key is electrically connected with the touch chip; the power module is electrically connected with the touch chip; the touch chip is electrically connected with the switch module.

3. The reset circuit of claim 1 wherein the touch module further comprises:

The first filter module comprises a first filter resistor, a first filter capacitor and a second filter capacitor, and the second filter module comprises a second filter resistor and a third filter capacitor;

The touch control key is electrically connected with the first end of the second filter resistor, the second end of the second filter resistor is electrically connected with the first end of the third filter capacitor, and the second end of the second filter resistor and the first end of the third filter capacitor are respectively electrically connected with the touch control chip;

The power module is electrically connected with the first end of the first filter resistor, and the first end of the first filter resistor and the first end of the second filter resistor are respectively electrically connected with the second end of the first filter resistor; the first end of the first filter resistor, the first end of the second filter resistor and the second end of the first filter resistor are respectively and electrically connected with the touch chip.

4. The reset circuit of claim 1 wherein the switch module comprises:

the device comprises a first mos tube, a second mos tube, a protection resistor and a first discharge resistor;

The touch module is electrically connected with the first end of the protection resistor, and the second end of the protection resistor is electrically connected with the first interface of the first mos tube;

The first end of the first discharging resistor and the first end of the first energy storage capacitor are respectively and electrically connected with the first end of the protection resistor, and the second end of the first discharging resistor and the second end of the first energy storage capacitor are respectively and electrically connected with the second interface of the first mos tube;

the first interface of the second mos tube is electrically connected with the third interface of the first mos tube respectively;

the second interface of the second mos tube is electrically connected with the power module, and the third interface of the second mos tube is electrically connected with the watchdog module.

5. The reset circuit of claim 4 wherein the circuit further comprises:

A charging module; the charging module is electrically connected with the first end of the protection resistor.

6. The reset circuit of claim 4 wherein the master control module is electrically connected to the first end of the protection resistor.

7. The reset circuit of claim 4 wherein the circuit further comprises:

The charging module and the main control module;

The charging module is electrically connected with the first end of the protection resistor; the main control module is electrically connected with the first end of the protection resistor.

8. The reset circuit of claim 1 wherein the watchdog module comprises:

A watchdog chip, a third mos transistor and a fourth filter capacitor;

The first end of the fourth filter capacitor and the watchdog chip are respectively and electrically connected with the switch module;

the second end of the fourth filter capacitor is electrically connected with the watchdog chip;

The first interface of the third mos transistor is electrically connected with the second end of the fourth filter capacitor, and the second interface of the third mos transistor is electrically connected with the watchdog chip.

9. The reset circuit of claim 8 wherein the circuit further comprises:

A second discharge resistor;

The watchdog chip and the switch module are respectively and electrically connected with the main control module;

The main control module, the first end of the second energy storage capacitor and the first end of the second discharge resistor are respectively and electrically connected with a third interface of the third mos tube;

And the second end of the second energy storage capacitor and the second end of the second discharge resistor are respectively and electrically connected with the first interface of the third mos tube.

10. A powered device, characterized in that the powered device is provided with a reset circuit as claimed in any one of the claims 1 to 9.