Protection circuit and electronic equipment

Abstract

The embodiment of the utility model provides a protection circuit and electronic equipment. The protection circuit comprises a sampling circuit which is configured to collect operation parameters of the electronic equipment; the comparison circuit receives the operation parameters collected by the sampling circuit, and the comparison circuit is configured to compare the operation parameters with preset operation parameters; the execution circuit is configured to be connected in series in an operation circuit of the electronic equipment, and the execution circuit executes an operation corresponding to a comparison result according to the comparison result of the comparison circuit; and the reporting circuit is used for reporting the comparison result of the comparison circuit to a main control board of the electronic equipment, so that the main control board can control an operation circuit of the electronic equipment based on the comparison result. According to the protection circuit and the beauty instrument provided by the invention, a dual-protection turn-off mechanism can be formed, and the operation safety of the beauty instrument is improved.

Description

Technical Field

[0001] The present application relates to the technical field of electronic products, and in particular to a protection circuit and an electronic device. Background Art

[0002] In the field of electronic equipment technology, in order to protect electronic equipment, a protection circuit is usually set in the electronic equipment; for example, a separate protection circuit board is set in the electronic equipment, and the protection circuit board samples the operating parameters of the electronic equipment host (such as current, voltage, pulse width, etc.), and compares them with the operating parameters sent by the host, so as to determine whether the host operation is abnormal. In the case of abnormal operation of the host, the protection circuit board will feedback the abnormal situation to the host, and the host will shut down the corresponding circuit.

[0003] However, in the related art, the host may have an abnormal situation where it is unable to shut down the corresponding circuit, which may lead to a dangerous situation. Utility Model Content

[0004] The embodiments of the present application provide a protection circuit and an electronic device, which can shut down the operating circuit of the host through the protection circuit, and can also shut down the operating circuit through the main control board of the beauty instrument; in this way, a dual protection shutdown mechanism is formed, thereby improving the safety of the operation of the electronic device.

[0005] According to a first aspect of an embodiment of the present application, a protection circuit is provided, including:

[0006] A sampling circuit configured to collect operating parameters of the electronic device;

[0007] A comparison circuit receives the operating parameters collected by the sampling circuit, and the comparison circuit is configured to compare the operating parameters with preset operating parameters;

[0008] An execution circuit is configured to be connected in series to the operation circuit of the electronic device, and the execution circuit executes an operation corresponding to the comparison result according to the comparison result of the comparison circuit;

[0009] The reporting circuit reports the comparison result of the comparison circuit to the main control board of the electronic device, so that the main control board can control the operation circuit of the electronic device based on the comparison result.

[0010] In one implementation, the protection circuit further includes a storage circuit, and the preset operating parameters are stored in the storage circuit;

[0011] The comparison circuit is configured to compare the operating parameter with the preset operating parameter stored in the storage circuit.

[0012] In one implementation, the protection circuit further includes a receiving circuit configured to receive a preset operating parameter;

[0013] The comparison circuit is configured to compare the operating parameter with the preset operating parameter received by the receiving circuit.

[0014] In one implementation, the reporting circuit includes a receiving circuit.

[0015] In one implementation, the receiving circuit includes a power supply circuit.

[0016] In one implementation, the protection circuit further includes a first power supply circuit, which is configured to be connected to the power supply circuit, and the first power supply circuit is independent of a second power supply circuit of the electronic device.

[0017] In one implementation, the operating parameters include an operating current and a first pulse width; and the sampling circuit includes:

[0018] A first sampling circuit is configured to collect an operating current and a first pulse width;

[0019] and / or,

[0020] The operating parameters include the photoelectric voltage and the second pulse width; the sampling circuit includes:

[0021] The second sampling circuit is configured to collect the photoelectric voltage and the second pulse width.

[0022] In one implementation, the operating parameter further includes an operating voltage; the sampling circuit further includes a first AD sampling circuit and a second AD sampling circuit;

[0023] The first AD sampling circuit and / or the second AD sampling circuit is configured to collect an operating voltage.

[0024] In one implementation, the preset operating parameter includes a reference voltage, the sampling circuit further includes a reference voltage sampling circuit, and the reference voltage sampling circuit is configured to collect a digital signal of the reference voltage;

[0025] The comparison circuit is configured to compare the operating voltage with a reference voltage.

[0026] According to a second aspect of an embodiment of the present application, there is provided an electronic device, including:

[0027] Main control board,

[0028] The protection circuit provided by any implementation method of the first aspect of the present application, the execution circuit of the protection circuit is connected in series in the operating circuit of the electronic device; the reporting circuit of the protection circuit is electrically connected to the main control board.

[0029] According to the protection circuit and beauty instrument provided in the embodiments of the present application, the operating parameters of the electronic device are collected through the sampling circuit, and the operating parameters collected by the collection circuit are compared with the preset operating parameters through the comparison circuit; the execution circuit is connected in series in the operating circuit of the electronic device, so that the execution circuit can perform a shutdown action in time according to the comparison result of the comparison circuit, thereby shutting down the operating circuit of the electronic device to avoid dangerous situations; the comparison result is reported to the main control board of the electronic device through the reporting circuit; in this way, the main control board can shut down the operating circuit in time according to the comparison result; in this way, the execution circuit in the protection circuit and the control of the operating circuit by the main control board form a dual protection mechanism, and when any one of the circuits fails, the operating circuit can be shut down by at least another circuit, thereby improving the safety of the operation of the electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0031] Figure 1 is a structural schematic diagram of a protection circuit provided in an embodiment of the present application;

[0032] Figure 2 This is a flowchart of an implementation of the protection circuit provided by the embodiment of the present application to provide protection for the beauty instrument;

[0033] Figure 3 This is another implementation flow chart of the protection circuit provided in the embodiment of the present application providing protection to the beauty instrument;

[0034] Figure 4 is another structural schematic diagram of a protection circuit provided in an embodiment of the present application;

[0035] Figure 5 This is another structural schematic diagram of the protection circuit provided in the embodiment of the present application.

[0036] Description of reference numerals:

[0037] 10-sampling circuit; 20-comparison circuit; 30-execution circuit; 40-reporting circuit; 50-first power supply circuit; 60-first AD sampling circuit; 70-second AD sampling circuit; 80-reference voltage sampling circuit;

[0038] 101 - first sampling circuit; 102 - second sampling circuit; 401 - receiving circuit. DETAILED DESCRIPTION

[0039] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present application.

[0040] It should be noted that many specific details are set forth in the following description to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited to the specific implementation methods disclosed below.

[0041] In the description of the present application, it should be understood that the terms "upper", "lower", "horizontal", "bottom", "inner", "outer" (if any) and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In the present application, unless otherwise clearly specified and limited, a first feature being "upper" or "lower" than a second feature may be that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium.

[0042] In this application, unless otherwise clearly specified and limited, the terms "connected", "connected", "fixed" (if any) and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral body; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. However, if it is indicated as a direct connection, it means that the two connected entities are not connected through an intermediate structure, but are only connected to form a whole through a connecting structure. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0043] In this application, the descriptions of "first", "second" (if any), etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0044] As the use of electronic devices penetrates into people's daily lives, beauty devices (such as hair removal devices) have gradually become common electronic products in people's daily lives. Among them, laser hair removal devices use the principle of selective photothermal action, adjust different wavelengths, energies and pulse widths, penetrate through the surface of the skin to the deep tissue of the skin, and use light energy to convert into heat energy that destroys hair follicle tissue, which is conducive to achieving the purpose of no longer growing hair and can achieve the effect of permanent hair removal.

[0045] Since laser hair removal devices use light energy to convert into heat energy that destroys hair follicle tissue, the safety of using laser hair removal devices is particularly important.

[0046] At present, by detecting the operating parameters of the laser hair removal device, when the operating parameters are abnormal, the main control board of the laser hair removal device shuts down the corresponding operating circuit, thereby avoiding dangerous situations caused by long-term abnormal operation.

[0047] However, in the case that an abnormality occurs in the control circuit of the main control board to the running circuit, the main control board may not be able to shut down the corresponding abnormal running circuit in time, which may cause a dangerous situation.

[0048] To this end, some embodiments of the present application provide an electronic device. The electronic device may include a main control board.

[0049] In some examples, the electronic device may be described using a beauty instrument as a specific example.

[0050] In some examples, the main control board may be a main control circuit board of a beauty instrument. A controller may be provided on the main control board.

[0051] In some examples, the controller may be a central processing unit (CPU), a microcontroller unit (MCU), a single chip microcomputer, or a programmable logic controller (PLC).

[0052] In some examples, the controller may also be other types of controllers. In some embodiments of the present application, only some examples of the controller are shown as examples, and the specific type of the controller is not limited.

[0053] In some examples, the controller can control the on and off of the operating circuit.

[0054] In some examples, when an operating parameter of an operating circuit is abnormal, the controller can shut down the operating circuit to avoid a dangerous situation.

[0055] In some examples, the beauty instrument may include a protection circuit, which may be arranged on a circuit board.

[0056] In some examples, the circuit board on which the protection circuit is arranged may be an integrated circuit board.

[0057] In some examples, the circuit board on which the protection circuit is arranged may be a printed circuit board (PCB for short).

[0058] In some examples, the protection circuit can be connected in series to the operating circuit of the beauty instrument.

[0059] In some examples, the protection circuit can control the on and off of the operating circuit.

[0060] In some examples, when an operating parameter of an operating circuit is abnormal, the protection circuit can shut down the operating circuit, thereby avoiding the occurrence of a dangerous situation.

[0061] Figure 1 It is a structural schematic diagram of a protection circuit provided in an embodiment of the present application.

[0062] Reference Figure 1 As shown, in some examples of the embodiments of the present application, the protection circuit may include a sampling circuit.

[0063] In some examples, the sampling circuit 10 can be connected to the operating circuit of the beauty instrument.

[0064] In some examples, when the beauty instrument is working, the sampling circuit 10 can collect operating parameters of the beauty instrument.

[0065] In some examples, the pins of the sampling circuit 10 may be connected to the operating circuit of the beauty instrument through a line.

[0066] In some examples, the protection circuit may include a comparison circuit 20 .

[0067] In some examples, a controller or a processor may be disposed on the circuit board where the protection circuit is arranged.

[0068] In some examples, the controller or processor on the circuit board where the protection circuit is arranged may include a CPU, an MCU, or a PLC.

[0069] In some examples, the comparison circuit 20 may be disposed in a controller or a processor.

[0070] In some examples, the comparison circuit 20 can be electrically connected to the sampling circuit 10 .

[0071] In some examples, the comparison circuit 20 may receive the operating parameters collected by the sampling circuit 10 .

[0072] In some examples, the comparison circuit 20 may compare the received operating parameters with the preset operating parameters to determine whether an abnormality occurs in the operation of the beauty instrument.

[0073] In some examples, when the operating parameters are consistent with the preset operating parameters, it can be determined that the beauty instrument is operating normally.

[0074] In some examples, when the operating parameters are inconsistent with the preset operating parameters, it can be determined that the beauty instrument is operating abnormally. In some examples, the protection circuit may include an execution circuit 30. The execution circuit 30 may be connected to the comparison circuit 20. The execution circuit 30 may be connected in series to the operation circuit of the beauty instrument.

[0075] In some examples, the execution circuit 30 may be a relay.

[0076] In some examples, execution circuit 30 may be a transistor.

[0077] In some examples, the execution circuit 30 may be a field effect transistor.

[0078] In some examples, the execution circuit 30 may be a photocoupler.

[0079] In some examples, the execution circuit 30 may be a switch connected in series to the operation circuit of the beauty instrument. When it is determined that the beauty instrument is operating abnormally, the execution circuit 30 may receive control from the controller of the protection circuit to disconnect the operation circuit of the beauty instrument.

[0080] It can be understood that in some examples of the embodiments of the present application, the specific types of the execution circuit 30 are only shown as some specific examples, and are not limited to the specific types of multiple execution circuits 30. In some examples, the execution circuit 30 may also be other types of circuits.

[0081] In some examples, the beauty instrument has multiple operating circuits. The execution circuit 30 may have multiple execution circuits, and each of the operating circuits may be connected in series with one execution circuit 30 .

[0082] In some examples, execution circuit 30 may have input pins.

[0083] In some examples, execution circuit 30 may have an output pin.

[0084] In some examples, the execution circuit 30 may be connected in series to the operation circuit via an input pin and an output pin.

[0085] In some examples, one of the multiple execution circuits 30 may be disconnected.

[0086] In some examples, some or all of the multiple execution circuits 30 may be disconnected.

[0087] In some examples, the protection circuit may include a reporting circuit 40 . The reporting circuit 40 may be electrically connected to the comparison circuit 20 .

[0088] In some examples, the reporting circuit 40 may be connected to the main control board of the beauty instrument for communication. The reporting circuit 40 may report the comparison result of the comparison circuit 20 to the main control board.

[0089] In some examples, the reporting circuit 40 may have a data serial port.

[0090] In some examples, the reporting circuit 40 can be connected to the main control board through 232 communication and I / O port.

[0091] In some examples, the reporting circuit 40 can report all comparison results of the comparison circuit 20 to the main control board.

[0092] In some examples, the reporting circuit 40 may report the abnormal comparison result to the main control board only when the comparison result of the comparison circuit 20 is abnormal.

[0093] In some examples, the main control board may control the running circuit according to the comparison result reported by the reporting circuit 40. For example, when the comparison result is abnormal, the main control board may control the running circuit to disconnect the running circuit.

[0094] That is to say, the beauty instrument provided in the embodiment of the present application can disconnect the running circuit through the main control board, which plays a role of one level of protection; in addition, the running circuit can also be disconnected through the execution circuit 30 of the protection circuit, which plays a double role of protection. In this way, when there is an abnormality in either the execution circuit 30 or the main control board, at least the other of the execution circuit 30 or the main control board can be guaranteed to disconnect the running circuit, thereby improving the safety of the beauty instrument operation.

[0095] According to the protection circuit provided in the embodiment of the present application, the operating parameters of the electronic device are collected by the sampling circuit 10, and the operating parameters collected by the collection circuit are compared with the preset operating parameters by the comparison circuit 20; the execution circuit 30 is connected in series in the operating circuit of the electronic device, so that the execution circuit 30 can perform a shutdown action in time according to the comparison result of the comparison circuit 20, thereby shutting down the operating circuit of the electronic device to avoid dangerous situations; the comparison result is reported to the main control board of the electronic device through the reporting circuit 40; in this way, the main control board can shut down the operating circuit in time according to the comparison result; in this way, the execution circuit 30 in the protection circuit and the control of the operating circuit by the main control board form a dual protection mechanism. When any one of the circuits fails, the operating circuit can be shut down by at least another circuit, thereby improving the safety of the operation of the beauty instrument.

[0096] Figure 2 This is a flowchart of an implementation of the protection circuit provided in the embodiment of the present application to provide protection for the beauty instrument.

[0097] In some examples, the protection circuit may include a storage circuit. The storage circuit may be a circuit in the controller described in detail in the foregoing embodiments of the present application.

[0098] In some examples, the preset operating parameters may be fixed parameters. For example, the beauty instrument may be a beauty instrument that operates at a fixed frequency.

[0099] In some examples, the preset operating parameters may be stored in a storage circuit.

[0100] In some examples, the preset operating parameters may include a preset operating current, a preset operating voltage, a preset operating pulse width, a preset operating photoelectric energy, and the like.

[0101] In some examples, the protection circuit may include a signal conversion circuit, and the signal conversion circuit may be connected to the acquisition circuit.

[0102] For some examples, refer to Figure 2 As shown, the sampling circuit 10 collects the operating parameters of the beauty instrument. It can be understood that the signal collected by the sampling circuit 10 is usually an analog signal. The sampling circuit 10 can send the analog signal to the signal conversion circuit. The signal conversion circuit can convert the analog signal into a digital signal.

[0103] In some examples, the signal conversion circuit can be arranged on the circuit board described in detail in the previous embodiments of the present application.

[0104] In some examples, the signal conversion circuit can be set in the controller described in detail in the previous embodiments of the present application.

[0105] For some examples, refer to Figure 2 As shown, the comparison circuit 20 can compare the operating parameter with the preset operating parameter. The preset operating parameter can be a fixed preset operating parameter stored in the storage circuit.

[0106] For some examples, refer to Figure 2 As shown, when the comparison result is abnormal, the execution circuit 30 can execute the action of disconnecting the running circuit.

[0107] For some examples, refer to Figure 2 As shown, when the comparison result is normal, the execution circuit 30 can maintain the pass state of the running circuit.

[0108] Figure 3 This is another implementation flowchart of the protection circuit provided in the embodiment of the present application providing protection to the beauty instrument.

[0109] In some examples, the protection circuit may include a receiving circuit 401. The receiving circuit 401 may be communicatively connected to the main control board.

[0110] In some examples, the reporting circuit 40 may include a receiving circuit 401. For example, the receiving circuit 401 may be a circuit for two-way communication.

[0111] In some examples, the reporting circuit 40 and the receiving circuit 401 may be independent circuits.

[0112] In some examples, the preset operating parameters sent by the main control board can be received by the receiving circuit 401 and stored in the storage circuit.

[0113] In some examples, the comparison circuit 20 of the protection circuit board may report the comparison result to the main control board through the reporting circuit 40 .

[0114] In some examples, when the beauty instrument is powered on, the main control board can send the operating parameters of this operation as preset operating parameters to the storage circuit, and the storage circuit stores them. In some examples, the operating parameters of the beauty instrument can be parameters set by the user.

[0115] For some examples, refer to Figure 3 As shown, the comparison circuit 20 can compare the operating parameters collected by the collection circuit with the preset operating parameters.

[0116] In some examples, during the operation of the beauty instrument, the user can reset the operation parameters of the beauty instrument. At this time, the main control board can send the new operation parameters as preset operation parameters to the storage circuit of the protection circuit.

[0117] In some examples, after the storage circuit receives the new preset operating parameters through the receiving circuit 401 , the original preset operating parameters can be updated to the new preset operating parameters.

[0118] In some examples, the comparison circuit 20 may compare the operating parameters collected by the collection circuit with new preset operating parameters.

[0119] In some examples, if the reporting circuit 40 reports the comparison result to the main control board when it also serves as the receiving circuit 401, it may cause reception interruption. Therefore, in some examples, the reporting circuit 40 may report to the main control board when the comparison result is abnormal.

[0120] In some examples, the reporting circuit 40 may only feed back a signal to the main control board; the main control board accesses the comparison result of the comparison circuit 20 according to the feedback signal. The comparison result of the comparison circuit 20 may be stored in the storage circuit.

[0121] For some examples, refer to Figure 1As shown, the reporting circuit 40 may have a GND pin.

[0122] In some examples, the reporting circuit 40 may have a 232T pin, which may transmit a reporting signal to the main control board.

[0123] In some examples, the reporting circuit 40 may have a 232R pin, which may receive a signal sent by the main control board.

[0124] In some examples, the reporting circuit 40 may have an OUT1 pin, which may feed back a signal to the main control board.

[0125] In some examples, the reporting circuit 40 may have an OUT2 pin, which may feed back a signal to the main control board.

[0126] In some examples, the signals fed back by the OUT1 pin and the OUT2 pin to the main control board may be the same.

[0127] In some examples, the signals fed back by the OUT1 pin and the OUT2 pin to the main control board may be different.

[0128] In some examples, any one of the OUT1 pin and the OUT2 pin may feed back a signal to the main control board.

[0129] In some examples, the OUT1 pin and the OUT2 pin may both feed back signals to the main control board at the same time, and the main control board may compare and determine whether the feedback signals of the OUT1 pin and the OUT2 pin are consistent.

[0130] In some examples, the receiving circuit 401 may include a power supply circuit. The power supply circuit may supply power to a controller in the protection circuit.

[0131] In some examples, the power supply circuit may include a +5V power supply circuit.

[0132] It is understood that in some examples of the embodiments of the present application, the type of the reporting circuit 40 is shown only as a specific example. In some examples, the reporting circuit 40 may also be other types of communication serial ports; the embodiments of the present application do not limit this.

[0133] Figure 4 This is another structural schematic diagram of the protection circuit provided in an embodiment of the present application.

[0134] For some examples, refer to Figure 4 As shown, the protection circuit may include a first power circuit 50. The first power circuit 50 may be connected to the power supply circuit.

[0135] In some examples, the power supply circuit may be a +12V power supply circuit. In this way, each circuit in the protection circuit may be powered by the first power supply circuit 50, so as to facilitate the normal operation of the protection circuit.

[0136] In some examples, the first power circuit 50 and the second power circuit of the beauty instrument may be independent of each other.

[0137] That is to say, in some examples, the first power circuit 50 in the protection circuit and the second power circuit of the main control board in the beauty instrument are independent of each other.

[0138] In some examples, the first power circuit 50 of the protection circuit and the second power circuit of the main control board in the beauty instrument can be connected in parallel.

[0139] In this way, when an abnormality occurs in the second power supply circuit of the main control board, the protection circuit will not be affected; the accuracy of the sampling and comparison results of the protection circuit can be ensured; thus, the operation of the beauty instrument is effectively protected, and the safety of the operation of the beauty instrument is improved.

[0140] In some examples, the sampling circuit 10 may include a first sampling circuit 101. The first sampling circuit 101 may sample an operating current and a first pulse width.

[0141] In some examples, the first sampling circuit 101 may be a Hall current sensor. It is understood that beauty devices (such as laser hair removal devices) usually work in a pulsed mode. Therefore, the Hall current sensor can collect the operating current and the first pulse width of the beauty device, so as to determine the energy of the laser emitted by the laser hair removal device, thereby ensuring the safety of the operation of the laser hair removal device.

[0142] In some examples, the sampling circuit 10 may include a second sampling circuit 102. The second sampling circuit 102 may collect the photoelectric voltage and the second pulse width.

[0143] In some examples, the second sampling circuit 102 may be a photoelectric sensor. The photoelectric sensor may collect the photoelectric voltage converted by the laser emitted by the laser hair removal device and the pulse width of the laser, thereby determining the energy of the laser emitted by the laser hair removal device and ensuring the safety of the operation of the laser hair removal device.

[0144] In some examples, the first pulse width and the second pulse width may be the same.

[0145] In some examples, the protection circuit may include one of the first sampling circuit 101 and the second sampling circuit 102 .

[0146] For example, the protection circuit can collect the operating current and the first pulse width through the first sampling circuit 101; and determine whether the beauty instrument is operating normally by comparing the operating current and the first pulse width with preset operating parameters.

[0147] In some examples, the protection circuit can collect the photoelectric voltage and the second pulse width through the second sampling circuit 102; and determine whether the beauty instrument operates normally by comparing the photoelectric voltage and the second pulse width with preset operating parameters.

[0148] In this way, the first sampling circuit 101 and the second sampling circuit 102 can serve as backup circuits for each other. In the event that one of the first sampling circuit 101 and the second sampling circuit 102 fails, the protection circuit can perform sampling through the other of the first sampling circuit 101 and the second sampling circuit 102, thereby ensuring the effectiveness of protecting the beauty instrument.

[0149] In some examples, the protection circuit can collect the operating current and the first pulse width through the first sampling circuit 101; at the same time, the photoelectric voltage and the second pulse width can be collected through the second sampling circuit 102. In this way, the operating parameters collected by the first sampling circuit 101 and the operating parameters collected by the second sampling circuit 102 can be mutually verified, thereby improving the accuracy of the protection of the beauty instrument.

[0150] Figure 5 This is another structural schematic diagram of the protection circuit provided in the embodiment of the present application.

[0151] In some examples, the operating parameter may include an operating voltage.

[0152] For some examples, refer to Figure 5 As shown, the sampling circuit 10 may include a first AD sampling circuit 60. The first AD sampling circuit 60 may sample the operating voltage.

[0153] It can be understood that the first AD sampling circuit 60 can convert the analog signal of the operating voltage into a digital signal.

[0154] In some examples, the sampling circuit 10 may include a second AD sampling circuit 70. The second AD sampling circuit 70 may sample the operating voltage.

[0155] It can be understood that the second AD sampling circuit 70 can convert the analog signal of the operating voltage into a digital signal.

[0156] In some examples, the protection circuit can sample the operating voltage through any one of the first AD sampling circuit 60 and the second AD sampling circuit 70 .

[0157] In some examples, the protection circuit can collect the operating voltage through the first AD sampling circuit 60 ; and at the same time, collect the operating voltage through the second AD sampling circuit 70 .

[0158] In some examples, the sampling circuit 10 may include a reference voltage sampling circuit 80. The reference voltage sampling circuit 80 may acquire a digital signal of a reference voltage.

[0159] In some examples, the comparison circuit 20 can compare the operating voltage with a reference voltage.

[0160] It is easy to understand that those skilled in the art can combine, split, reorganize, etc. the embodiments of the present application to obtain other embodiments based on the several embodiments provided in the present application, and these embodiments do not exceed the protection scope of the present application.

[0161] The above specific implementation methods further explain in detail the purpose, technical solutions and beneficial effects of the embodiments of the present application. It should be understood that the above are only specific implementation methods of the embodiments of the present application and are not used to limit the protection scope of the embodiments of the present application. Any modifications, equivalent substitutions, improvements, etc. made on the basis of the technical solutions of the embodiments of the present application should be included in the protection scope of the embodiments of the present application.

Claims

1. A protection circuit, characterized in that: include: A sampling circuit (10) is configured to collect operating parameters of the electronic device; A comparison circuit (20) receives the operating parameter collected by the sampling circuit (10), and the comparison circuit (20) is configured to compare the operating parameter with a preset operating parameter; an execution circuit (30) configured to be connected in series to an operating circuit of the electronic device, wherein the execution circuit (30) executes an operation corresponding to a comparison result of the comparison circuit (20); A reporting circuit (40) reports the comparison result of the comparison circuit (20) to the main control board of the electronic device, so that the main control board can control the operating circuit of the electronic device based on the comparison result.

2. The protection circuit according to claim 1, characterized in that: The protection circuit further comprises a storage circuit, and the preset operating parameters are stored in the storage circuit; The comparison circuit (20) is configured to compare the operating parameter with the preset operating parameter stored in the storage circuit.

3. The protection circuit according to claim 1, characterized in that: The protection circuit further comprises a receiving circuit (401), wherein the receiving circuit (401) is configured to receive the preset operating parameter; The comparison circuit (20) is configured to compare the operating parameter with the preset operating parameter received by the receiving circuit (401).

4. The protection circuit according to claim 3, characterized in that: The reporting circuit (40) comprises the receiving circuit (401).

5. The protection circuit according to claim 3, characterized in that: The receiving circuit (401) comprises a power supply circuit.

6. The protection circuit according to any one of claims 1 to 5, characterized in that: The protection circuit further comprises a first power supply circuit (50), wherein the first power supply circuit (50) is configured to be connected to the power supply circuit, and the first power supply circuit (50) is independent of a second power supply circuit of the electronic device.

7. The protection circuit according to any one of claims 1 to 5, characterized in that: The operating parameters include an operating current and a first pulse width; the sampling circuit (10) includes: A first sampling circuit (101) is configured to collect the operating current and the first pulse width; and / or, The operating parameters include photoelectric voltage and a second pulse width; the sampling circuit (10) includes: The second sampling circuit (102) is configured to collect the photoelectric voltage and the second pulse width.

8. The protection circuit according to any one of claims 1 to 5, characterized in that: The operating parameters also include an operating voltage; the sampling circuit (10) also includes a first AD sampling circuit (60) and a second AD sampling circuit (70); The first AD sampling circuit (60) and / or the second AD sampling circuit (70) are configured to collect the operating voltage.

9. The protection circuit according to claim 8, characterized in that: The preset operating parameter includes a reference voltage, and the sampling circuit (10) further includes a reference voltage sampling circuit (80), wherein the reference voltage sampling circuit (80) is configured to collect a digital signal of the reference voltage; The comparison circuit (20) is configured to compare the operating voltage with the reference voltage.

10. An electronic device, characterized in that: include: Main control board, The protection circuit according to any one of claims 1 to 9, wherein the execution circuit (30) of the protection circuit is connected in series to the operation circuit of the electronic device; and the reporting circuit (40) of the protection circuit is electrically connected to the main control board.

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