Circuit protection method and device based on input voltage, equipment and storage medium

Abstract

The invention belongs to the field of intelligent household appliances, and particularly relates to a circuit protection method and device based on input voltage, equipment and a storage medium. When it is determined that the first input voltage of the target circuit is in the overvoltage state and it is determined that the first input voltage is larger than the upper limit value of the standard working voltage corresponding to the load device of the target circuit, a control panel of the target circuit is controlled to disconnect the load device of the target circuit; therefore, normal operation of equipment corresponding to the target circuit can be ensured. According to the method, the change state of the voltage is detected, and corresponding protection measures are taken according to the change state of the circuit, so that the overvoltage and undervoltage protection range of the circuit is expanded, the stability and the reliability of the circuit are improved, and the operation efficiency and the safety of a circuit system are further improved.

Description

Technical Field

[0001] The present application belongs to the field of smart home appliances, and specifically relates to a circuit protection method, device, equipment and storage medium based on input voltage. Background Art

[0002] The importance of circuits in real life cannot be ignored. It is the foundation of modern science and technology and industry, and provides convenience for our lives. From household appliances to factory equipment, to smart phones and computers, they all rely on the support of circuits. Circuits not only transmit electrical energy, but also process and transmit information. For example, communication technologies such as the Internet and mobile communications are all realized through circuits. Therefore, circuits also play an important role in medical equipment, environmental protection equipment and other fields, improving the quality of life and promoting social development.

[0003] However, in current circuit design, most circuits do not use over-voltage or under-voltage protection measures, or only use hardware over-voltage or under-voltage protection. This protection method mainly sets a threshold. When the power supply voltage exceeds or falls below this threshold, the hardware will automatically cut off the power supply, causing the entire system to stop working. Although this single method has a certain degree of protection, due to its small protection range, once the power supply voltage exceeds or falls below the threshold, not only will the power supply not work, but the software will also stop running, and all loads will also stop working, which will undoubtedly affect the normal operation of the system. Secondly, this protection method lacks flexibility and cannot be adjusted according to actual needs.

[0004] How to use multi-level voltage protection to cope with voltage changes in the circuit to expand the over-voltage and under-voltage protection range, and use a combination of software and hardware to handle different circuit application scenarios, thereby improving the stability and reliability of the circuit and improving the operating efficiency and safety of the circuit system, is a problem that needs to be solved urgently. Summary of the invention

[0005] The present application provides a circuit protection method, device, equipment and storage medium based on input voltage, so as to solve the defect that the voltage change in the circuit cannot be coped with according to the multi-level voltage protection.

[0006] In a first aspect, the present application provides a circuit protection method based on input voltage, comprising:

[0007] Acquire a first input voltage of a target circuit, and determine a voltage state of the first input voltage according to the first input voltage;

[0008] When the voltage state is an overvoltage state, determining whether the first input voltage is greater than a first preset voltage, where the first preset voltage is an upper limit value of a standard operating voltage corresponding to a load device of the target circuit;

[0009] When the first input voltage is greater than the first preset voltage, the control board controlling the target circuit disconnects the load device of the target circuit.

[0010] Optionally, after the control board controlling the target circuit disconnects the load device of the target circuit, the method further includes:

[0011] Acquiring a second input voltage of the target circuit;

[0012] Determining whether the second input voltage is greater than a second preset voltage, where the second preset voltage is an upper limit value of a standard operating voltage corresponding to a power supply device of the target circuit;

[0013] When the second input voltage is greater than the second preset voltage, the control board is controlled to disconnect the power supply device of the target circuit.

[0014] Optionally, the voltage state includes: a normal state, an overvoltage state, and an undervoltage state, and determining the voltage state of the first input voltage according to the first input voltage includes:

[0015] determining whether the first input voltage matches a standard voltage of the target circuit, the standard voltage being less than the first preset voltage;

[0016] When the first input voltage matches the standard voltage, determining that the voltage state of the first input voltage is a normal state;

[0017] When the first input voltage does not match the standard voltage, determining whether the first input voltage is greater than the standard voltage;

[0018] If yes, determining that the voltage state of the first input voltage is an overvoltage state;

[0019] If not, it is determined that the voltage state of the first input voltage is an undervoltage state.

[0020] Optionally, the control board controlling the target circuit performs a disconnection process on a load device of the target circuit, including:

[0021] Processing and analyzing the first input voltage to obtain a voltage signal of the first input voltage;

[0022] determining a change state of the first input voltage according to a voltage signal of the first input voltage;

[0023] Determining whether the change state is a continuous change state;

[0024] If so, the control board controlling the target circuit disconnects the load device of the target circuit.

[0025] Optionally, the method further includes:

[0026] When the voltage state is an undervoltage state, determining whether the first input voltage is less than a third preset voltage, wherein the third preset voltage is a lower limit value of a standard operating voltage corresponding to a load device of the target circuit;

[0027] When the first input voltage is less than the third preset voltage, the control board controlling the target circuit disconnects the load device of the target circuit.

[0028] Optionally, after the control board controlling the target circuit disconnects the load device of the target circuit, the method further includes:

[0029] Acquiring a third input voltage of the target circuit;

[0030] Determining whether the third input voltage is less than a fourth preset voltage, where the fourth preset voltage is a lower limit value of a standard operating voltage corresponding to a power supply device of the target circuit;

[0031] When the third input voltage is not less than the fourth preset voltage, the control board is controlled to disconnect the power supply device of the target circuit.

[0032] In a second aspect, the present application provides a circuit protection device based on input voltage, comprising:

[0033] An acquisition module, used for acquiring a first input voltage of a target circuit;

[0034] a determination module, configured to determine a voltage state of the first input voltage according to the first input voltage;

[0035] a judgment module, used for judging whether the first input voltage is greater than a first preset voltage when the voltage state is an overvoltage state, wherein the first preset voltage is an upper limit value of a standard operating voltage corresponding to a load device of the target circuit;

[0036] The control module is used to control the control board of the target circuit to disconnect the load device of the target circuit when the first input voltage is greater than the first preset voltage.

[0037] Optionally, the acquisition module is further used to acquire a second input voltage of the target circuit;

[0038] The judgment module is further used to judge whether the second input voltage is greater than a second preset voltage, where the second preset voltage is an upper limit value of a standard operating voltage corresponding to the power supply device of the target circuit;

[0039] The control module is further used to control the control board to disconnect the power supply device of the target circuit when the second input voltage is greater than the second preset voltage.

[0040] Optionally, the judging module is further used to judge whether the first input voltage matches a standard voltage of the target circuit, and the standard voltage is less than the first preset voltage;

[0041] The determining module is specifically configured to determine that the voltage state of the first input voltage is a normal state when the first input voltage matches the standard voltage;

[0042] The judging module is further configured to judge whether the first input voltage is greater than the standard voltage when the first input voltage does not match the standard voltage;

[0043] The determination module is specifically configured to determine that the voltage state of the first input voltage is an overvoltage state when it is determined that the first input voltage is greater than the standard voltage;

[0044] The determining module is specifically configured to determine that the voltage state of the first input voltage is an undervoltage state when it is determined that the first input voltage is not greater than the standard voltage.

[0045] Optionally, the device further comprises: a processing module;

[0046] The processing module is used to process and analyze the first input voltage to obtain a voltage signal of the first input voltage;

[0047] The determining module is further used to determine a change state of the first input voltage according to a voltage signal of the first input voltage;

[0048] The judging module is further used to judge whether the change state is a continuous change state;

[0049] The control module is further configured to control the control board of the target circuit to disconnect the load device of the target circuit when the change state is a continuous change state.

[0050] Optionally, the judgment module is further used to judge whether the first input voltage is less than a third preset voltage when the voltage state is an undervoltage state, and the third preset voltage is a lower limit value of a standard operating voltage corresponding to a load device of the target circuit;

[0051] The control module is further configured to control the control board of the target circuit to disconnect the load device of the target circuit when the first input voltage is less than the third preset voltage.

[0052] Optionally, the acquisition module is further used to acquire a third input voltage of the target circuit;

[0053] The judgment module is further used to judge whether the third input voltage is less than a fourth preset voltage, where the fourth preset voltage is a lower limit value of a standard operating voltage corresponding to the power supply device of the target circuit;

[0054] The control module is further configured to control the control board to disconnect the power supply device of the target circuit when the third input voltage is not less than the fourth preset voltage.

[0055] In a third aspect, the present application provides a circuit protection device based on input voltage, comprising:

[0056] Memory;

[0057] processor;

[0058] Wherein, the memory stores computer-executable instructions;

[0059] The processor executes the computer-executable instructions stored in the memory to implement the circuit protection method based on input voltage as described in the first aspect and various possible implementations of the first aspect.

[0060] In a fourth aspect, the present application provides a computer storage medium having computer execution instructions stored thereon, wherein the computer execution instructions are executed by a processor to implement the circuit protection method based on input voltage as described in the first aspect and various possible implementations of the first aspect.

[0061] The circuit protection method based on input voltage provided by the present application, when it is determined that the first input voltage of the target circuit is in an overvoltage state, and when it is determined that the first input voltage is greater than the upper limit value of the standard operating voltage corresponding to the load device of the target circuit, the control board of the control target circuit disconnects the load device of the target circuit to ensure that the device corresponding to the target circuit can operate normally. This method not only expands the over-voltage and under-voltage protection range of the circuit, but also improves the stability and reliability of the circuit, thereby improving the operating efficiency and safety of the circuit system by detecting the voltage change state and taking corresponding protection measures according to the circuit change state. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0063] Figure 1 The process of the circuit protection method based on input voltage provided by this application is Figure 1 ;

[0064] Figure 2 The process of the circuit protection method based on input voltage provided by this application is Figure 2 ;

[0065] Figure 3 The process of the circuit protection method based on input voltage provided by this application is Figure 3 ;

[0066] Figure 4 The process of the circuit protection method based on input voltage provided by this application is Figure 4 ;

[0067] Figure 5 is a schematic structural diagram of a circuit protection device based on input voltage provided by the present application;

[0068] Figure 6 It is a structural schematic diagram of a circuit protection device based on input voltage provided in this application.

[0069] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0070] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below in conjunction with the drawings in this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0071] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in sequences other than those illustrated or described herein, for example.

[0072] In the embodiments of the present application, the words "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0073] With the advancement of science and technology, circuit design has become more complex and sophisticated. From simple electronic components to complex integrated circuits, the scale and function of circuits have continued to expand. Various advanced technologies and methods are used in modern circuit design, such as analog circuit design, digital circuit design, and radio frequency circuit design.

[0074] In practical applications, circuits play an important role. They are widely used in home appliances, factory equipment, communication technology and other fields. For example, TVs, refrigerators, washing machines, etc. in the home cannot do without the support of circuits; automation equipment and robots in factories also need circuits to achieve control and operation; and modern electronic devices such as smartphones and computers are highly dependent on circuits to transmit and process information.

[0075] However, in current circuit design, most circuits do not use over-voltage or under-voltage protection measures, or only use hardware over-voltage or under-voltage protection. This protection method mainly sets a threshold. When the power supply voltage exceeds or falls below this threshold, the hardware will automatically cut off the power supply, causing the entire system to stop working. Although this single method has a certain degree of protection, due to its small protection range, once the power supply voltage exceeds or falls below the threshold, not only will the power supply not work, but the software will also stop running, and all loads will also stop working, which will undoubtedly affect the normal operation of the system. Secondly, this protection method lacks flexibility and cannot be adjusted according to actual needs.

[0076] Therefore, how to respond to voltage changes in the circuit through multi-level voltage protection to expand the over-voltage and under-voltage protection range, and use a combination of software and hardware to handle different circuit application scenarios, thereby improving the stability and reliability of the circuit and improving the operating efficiency and safety of the circuit system, is a problem that needs to be solved urgently.

[0077] In view of the above problems, the present application provides a circuit protection method based on input voltage.

[0078] First, the circuit protection method involved in the present application is described.

[0079] The software method is used to detect whether the input voltage of the target circuit can make the load device of the target circuit work normally. The hardware method is used to detect whether the input voltage of the target circuit can make the power supply device of the target circuit work normally.

[0080] The software method is used to determine whether the input voltage reaches the voltage corresponding to the load device of the target circuit. If the input voltage does not reach the voltage required by the load device, and the power supply device is already in working state, the load device may not work properly due to insufficient voltage, or may even be damaged due to overvoltage. Therefore, it is necessary to first determine whether the input voltage reaches the load device of the target circuit, and then determine whether the input voltage reaches the voltage corresponding to the power supply device of the target circuit. Therefore, the execution order of the software method is before the execution order of the hardware method.

[0081] It is understandable that if the execution order of the software method is specified to be before the execution order of the hardware method. This means that in the process of detecting and adjusting the voltage, the software method should be executed before the hardware method. Through the software method, the input voltage can be detected first to ensure the safe operation of the load device, and then ensure the safe operation of the target circuit. If the software method cannot meet the requirements of ensuring the safe operation of the target circuit, it is necessary to shut down the load device, and then perform further detection through the hardware method until the safe operation of the target circuit is ensured. In this way, not only can the energy utilization efficiency be improved, but also the safety of the protection equipment and system corresponding to the target circuit can be ensured.

[0082] The judgment factors of the software method provided in the present application include: a first preset voltage corresponding to the overvoltage state and a third preset voltage corresponding to the undervoltage state. The judgment factors of the hardware method include: a second preset voltage corresponding to the overvoltage state and a fourth preset voltage corresponding to the undervoltage state.

[0083] The software and hardware combination method provided in the present application can not only prevent the load device and power supply device of the target circuit from being damaged, but also ensure the safe operation of the target circuit, thereby improving the safety and stability of the equipment and system.

[0084] The present application provides a circuit protection method based on input voltage. When it is determined that the first input voltage of the target circuit is in an overvoltage state and when it is determined that the first input voltage is greater than the upper limit of the standard operating voltage corresponding to the load device of the target circuit, the control board of the target circuit is controlled to disconnect the load device of the target circuit to ensure that the device corresponding to the target circuit can operate normally. This method not only expands the over-voltage and under-voltage protection range of the circuit, but also improves the stability and reliability of the circuit, thereby improving the operating efficiency and safety of the circuit system by detecting the voltage change state and taking corresponding protection measures according to the circuit change state.

[0085] Figure 1 The process of the circuit protection method based on input voltage provided in the embodiment of the present application Figure 1 .like Figure 1 As shown, the circuit protection method based on input voltage provided in this embodiment includes:

[0086] S101: Acquire a first input voltage of a target circuit, and determine a voltage state of the first input voltage according to the first input voltage.

[0087] The first input voltage is the voltage entering the target circuit. The target circuit includes but is not limited to a device or system including a power supply and a load.

[0088] The voltage state includes: normal state, overvoltage state and undervoltage state. The normal state means that when the first input voltage is within the normal voltage range of the voltage, the circuit is in a normal working state. The overvoltage state means that when the first input voltage is greater than the upper limit of the normal voltage range, the circuit is in an overvoltage working state. The undervoltage state means that when the first input voltage is less than the lower limit of the normal voltage range, the voltage is in an undervoltage working state.

[0089] It can be understood that if the voltage state corresponding to the first input voltage is a normal state, it means that the current voltage is within the normal voltage range. Therefore, the target circuit can work normally, and the device or component corresponding to the target circuit can operate as expected.

[0090] If the voltage state corresponding to the first input voltage is an overvoltage state, it means that the current voltage is not within the normal voltage range and exceeds the upper limit of the normal voltage range. Therefore, the target circuit cannot work normally. At the same time, the device or component corresponding to the target circuit may be in an overload state, causing the device or component to short circuit or even be damaged.

[0091] If the voltage state corresponding to the first input voltage is an undervoltage state, it means that the current voltage is not within the normal voltage range and is less than the lower limit of the normal voltage range. Therefore, the target circuit may not have sufficient energy to perform its intended function. At the same time, the device or component corresponding to the target circuit may be in an undervoltage state, causing the performance of the device or component corresponding to the target circuit to decline or even fail.

[0092] By acquiring the input voltage value at a specific moment of the target circuit, the voltage change corresponding to the specific moment can be obtained.

[0093] It is understandable that, since the voltage signal of the target circuit will gradually change with time, by acquiring the input voltage value of the target circuit at a specific moment, the voltage change corresponding to this specific moment can be obtained.

[0094] The first input voltage of the target circuit may be obtained directly through a voltage sensor, or indirectly through a resistance sensor, for example, and the present application does not impose any special restrictions on this.

[0095] In this step, after obtaining the first input voltage of the target circuit, a voltage state corresponding to the first input voltage should be determined based on the first input voltage, so as to ensure the normal operation of the target circuit based on the voltage state of the first input voltage.

[0096] The purpose of determining the voltage state corresponding to the first input voltage according to the first input voltage is to better manage and maintain the working state of the circuit. If the first input voltage is not within the normal voltage range, it means that corresponding protection measures need to be taken to ensure the normal operation of the target circuit.

[0097] S102: When the voltage state is an overvoltage state, determine whether the first input voltage is greater than a first preset voltage, where the first preset voltage is an upper limit value of a standard operating voltage corresponding to a load device of the target circuit.

[0098] The purpose of judging whether the first input voltage is greater than the first preset voltage is to determine whether the input voltage at the current moment can enable the load device of the target circuit to work normally.

[0099] It can be understood that, since during the operation of the target circuit, its corresponding load device usually sets a standard operating voltage range for stable operation, by determining whether the input voltage of the target circuit at the current moment is greater than the upper limit value of the standard operating voltage corresponding to the load device of the target circuit, it can be determined whether the load device of the target circuit can operate normally.

[0100] If the first input voltage is greater than the first preset voltage, it indicates that the current input voltage cannot enable the load device of the target circuit to operate normally. At this time, the control board of the target circuit can be controlled to disconnect the load device of the target circuit.

[0101] If the first input voltage is not greater than the first preset voltage, it indicates that the input voltage at the current moment can enable the load device of the target circuit to work normally. At this time, it is necessary to re-acquire the first input voltage of the target circuit.

[0102] For example, when the clothing processing equipment is in working state, the circuit system of the clothing processing equipment detects that the input voltage at the current moment is not within the normal voltage range and is greater than the standard operating voltage that the load device of the clothing processing equipment can operate, in order to ensure the normal operation of the clothing processing equipment, it is necessary to disconnect the load device (for example, the motor device) corresponding to the target circuit of the clothing processing equipment.

[0103] S103: When the first input voltage is greater than the first preset voltage, the control board of the target circuit is controlled to disconnect the load device of the target circuit.

[0104] In order to ensure the safety of the load device in the circuit and ensure the safe operation of other devices corresponding to the load device (for example, a power supply device), it is necessary for the control board of the target circuit to disconnect the load device of the target circuit when the first input voltage is greater than the first preset voltage.

[0105] When the input voltage exceeds the first preset voltage, it means that the input voltage in the circuit has exceeded the standard operating voltage of the load device, which may cause damage to the load device in the circuit. Therefore, it is necessary to disconnect the load device of the target circuit through the control board of the target circuit.

[0106] It can be understood that the control board of the target circuit disconnects the load device of the target circuit, which can not only avoid short circuit in the circuit, but also reduce the life loss of the load device, thereby ensuring the normal operation of the circuit system corresponding to the target circuit.

[0107] The control board of the target circuit may disconnect the load device of the target circuit by, for example, adopting a dual-path control method, for example, one path is controlled by a relay and the other path is controlled by a thyristor.

[0108] The purpose of using the dual-channel control method is to ensure that the load can be stably and reliably controlled under various circumstances. If one of the control devices fails, the other control device can continue to work to ensure the normal operation of the load. In addition, dual-channel control can also improve the stability and reliability of the system and avoid paralysis of the entire system due to the failure of a control device.

[0109] For example, in the power system of a clothing processing equipment, if the input voltage at the current moment exceeds the preset voltage, it may cause a failure of the load device or even damage the load device. Therefore, it is necessary to control the control board of the target circuit to disconnect the load device of the target circuit to ensure the stable operation of the clothing processing equipment.

[0110] The circuit protection method based on input voltage provided by the present application, when obtaining the first input voltage of the target circuit, first determines the voltage state of the first input voltage according to the first input voltage, and then when it is determined that the voltage state of the first input voltage is an overvoltage state, and when it is determined that the first input voltage is greater than the first preset voltage, controls the control board of the target circuit to disconnect the load device of the target circuit. The method not only expands the over-voltage and under-voltage protection range of the circuit, but also enhances the stability and reliability of the circuit, thereby improving the operating efficiency and safety of the circuit system.

[0111] Figure 2The process of the circuit protection method based on input voltage provided in the embodiment of the present application Figure 2 .like Figure 2 As shown, this embodiment is Figure 1 Based on the embodiment, a circuit protection method based on input voltage is described in detail. The circuit protection method based on input voltage provided by this embodiment includes:

[0112] S201: Acquire a first input voltage of a target circuit.

[0113] The explanation of step S201 refers to the explanation of the above embodiment, which will not be repeated here.

[0114] S202: Determine a voltage state of the first input voltage according to the first input voltage.

[0115] The explanation of step S202 refers to the explanation of the above embodiment, which will not be repeated here.

[0116] S203: When the voltage state is an overvoltage state, determine whether the first input voltage is greater than a first preset voltage, if so, execute step S204; if not, execute step S201.

[0117] The explanation of step S203 refers to the explanation of the above embodiment, which will not be repeated here.

[0118] S204: Process and analyze the first input voltage to obtain a voltage signal of the first input voltage.

[0119] When it is determined that the voltage state of the input voltage at the current moment is an overvoltage state, it should also be detected whether the overvoltage state change is a continuous change. Because if the current overvoltage state changes to an instantaneous state, it may be due to the instability of the input voltage. Therefore, in order to improve the execution efficiency of the target circuit, the current overvoltage state can be changed to an instantaneous state without consideration.

[0120] Therefore, in order to obtain the overvoltage change of the input voltage at the current moment, it is necessary to process and analyze the input voltage at the current moment to obtain the voltage signal of the input voltage at the current moment.

[0121] S205: Determine a change state of the first input voltage according to the voltage signal of the first input voltage.

[0122] The change state of the first input voltage includes: a continuous change state and an instantaneous change state. The continuous change state means that the input voltage at the current moment is in an overvoltage state for a fixed period of time. The instantaneous change state means that the input voltage at the current moment is in an overvoltage state in a very short period of time.

[0123] It can be understood that when the input voltage changes continuously, it means that the input voltage at the current moment has been in an overvoltage state for a period of time, and at the current moment, the voltage value of the input voltage also exceeds the standard voltage range.

[0124] When the input voltage changes in an instantaneous state, it means that the input voltage at the current moment changes in a very short time. This change is usually sudden and instantaneous, and may only last for a few milliseconds or a few microseconds. The instantaneous change state may be caused by a sudden disturbance of the target circuit.

[0125] By processing and analyzing the input voltage signal at the current moment, the change state of the input voltage at the current moment can be obtained, so that when it is determined that the change state of the input voltage at the current moment is abnormal, corresponding measures can be taken in time.

[0126] S206: Determine whether the change state is a continuous change state; if so, execute step S207; if not, execute step S201.

[0127] The continuously changing state refers to that the voltage state of the current voltage is always in an overvoltage state within a fixed period of time.

[0128] The purpose of judging whether the change state is a continuous change state is to determine whether the input voltage of the target circuit is always in an overvoltage state.

[0129] It is understandable that since the input voltage changes with time, when the target voltage starts to work, its corresponding input voltage is small. After the target circuit works for a period of time, its corresponding input voltage gradually changes. For example, the input voltage of the target circuit continues to rise, and then when it is determined that the input voltage of the target circuit is in an overvoltage state, it is also necessary to determine whether the input voltage of the target circuit has been in a continuous overvoltage state.

[0130] If the changing state is a continuous changing state, it indicates that the input voltage of the target circuit has been in an overvoltage state. Therefore, it is necessary to control the control board of the target circuit to disconnect the load device of the target circuit.

[0131] If the change state is not a continuous change state, it indicates that the input voltage of the target circuit is not always in an overvoltage state, and therefore, the first input voltage of the target circuit needs to be acquired.

[0132] It is understandable that if the input voltage at the current moment is in a continuously changing state, it means that the input voltage of the target circuit is in an overvoltage state for a long time. This continuous high voltage may cause damage to the circuit load, so it is necessary to control the control board of the target circuit to disconnect the load device of the target circuit. This can protect the load device and avoid damage to other devices corresponding to the load device.

[0133] If the input voltage at the current moment is not in a continuous change state, it means that the input voltage of the target circuit has not been in an overvoltage state for a long time. At this time, the load device of the target circuit may not be in danger, so it is necessary to obtain the first input voltage of the target circuit. The purpose of this operation may be to monitor the subsequent changes in the input voltage so as to take appropriate measures in the next operation.

[0134] S207: Controlling the control board of the target circuit to disconnect the load device of the target circuit.

[0135] S208: Acquire a second input voltage of the target circuit.

[0136] The second input voltage is the voltage entering the target circuit.

[0137] Since the target circuit is still in operation after the control board controlling the target circuit disconnects the load device of the target circuit, in order to detect whether the input voltage of the target circuit will change, it is necessary to re-acquire the second input voltage of the target circuit.

[0138] By acquiring the input voltage value at a specific moment, the voltage change corresponding to the specific moment can be obtained.

[0139] It is understandable that, since the voltage signal of the target circuit will gradually change with time, by acquiring the input voltage value of the target circuit at a specific moment, the voltage change corresponding to this specific moment can be obtained.

[0140] The second input voltage of the target circuit may be obtained directly through a voltage sensor, or indirectly through a resistance sensor, for example, and the present application does not impose any special restrictions on this.

[0141] S209: Determine whether the second input voltage is greater than a second preset voltage; if so, execute step S210; if not, execute step S208.

[0142] The purpose of judging whether the second input voltage is greater than the second preset voltage is to determine whether the input voltage at the current moment can enable the power supply device of the target circuit to work normally.

[0143] It can be understood that since the target circuit is in operation, its corresponding power supply device usually sets a standard operating voltage range for stable operation. Therefore, by determining whether the input voltage of the target circuit at the current moment is greater than the upper limit value of the standard operating voltage corresponding to the power supply device of the target circuit, it is possible to determine whether the power supply device of the target circuit can operate normally.

[0144] If the second input voltage is greater than the second preset voltage, it indicates that the current input voltage cannot enable the power supply device of the target circuit to operate normally. At this time, the control board of the target circuit can be controlled to disconnect the power supply device of the target circuit.

[0145] If the second input voltage is not greater than the second preset voltage, it indicates that the input voltage at the current moment can enable the power supply device of the target circuit to work normally. At this time, the second input voltage of the target circuit needs to be re-acquired.

[0146] It is understandable that if the second input voltage is greater than the second preset voltage, it means that the input voltage at the current moment exceeds the normal working range of the power supply device. In this case, if this high voltage continues to be used to power the circuit, it may cause damage to the power supply device of the circuit. Therefore, it is necessary to control the control board of the target circuit to disconnect the power supply device of the target circuit. In this way, the power supply device of the circuit can be protected and the device can be prevented from being damaged due to overvoltage.

[0147] If the second input voltage is not greater than the second preset voltage, it means that the input voltage at the current moment does not exceed the normal working range and remains within the acceptable range of the power supply device. At this time, the power supply device of the target circuit can work normally. However, since the input voltage changes over time, it is necessary to re-acquire the second input voltage of the target circuit to detect the voltage change of the second input voltage in real time.

[0148] S210: Control the control board to disconnect the power supply device of the target circuit.

[0149] The second preset voltage is an upper limit value of a standard operating voltage corresponding to the power supply device of the target circuit, and the second preset voltage is different from the first preset voltage.

[0150] When it is determined that the second input voltage is greater than the second preset voltage, the control board of the target circuit disconnects the power supply device of the target circuit, which can not only prevent the excessively high input voltage from damaging the power supply device in the target circuit, such as burning the power supply, but also avoid additional consumption of electricity, thereby achieving the purpose of energy saving and emission reduction.

[0151] For example, when a smart home appliance is in working condition, the circuit system of the smart home appliance detects that the current input voltage is not within the normal voltage range and is greater than the standard operating voltage that the power supply device of the smart home appliance can operate, in order to avoid failure or even damage of the smart home appliance, it is necessary to disconnect the power supply device corresponding to the target circuit of the smart home appliance.

[0152] The circuit protection method based on input voltage provided by the present application, after determining that the first input voltage is greater than the preset voltage corresponding to the software method, first determines the voltage signal of the first input voltage according to the first input voltage, and then determines the change state corresponding to the voltage signal according to the voltage signal, and then when it is determined that the change state corresponding to the voltage signal is a continuous change state, controls the control board of the target circuit to disconnect the load device of the target circuit, and then continues to obtain the second input voltage of the target circuit, and when it is determined that the second input voltage is greater than the preset voltage corresponding to the hardware method, controls the control board to disconnect the power supply device of the target circuit. This method not only expands the over-voltage and under-voltage protection range of the circuit, but also improves the stability and reliability of the circuit, thereby improving the operating efficiency and safety of the circuit system by detecting the change state of the voltage and taking corresponding software and hardware protection measures according to the circuit change state.

[0153] Figure 3 The process of the circuit protection method based on input voltage provided in the embodiment of the present application Figure 2 .like Figure 3 As shown, this embodiment is Figure 2 Based on the embodiment, a circuit protection method based on input voltage is described in detail. The circuit protection method based on input voltage provided by this embodiment includes:

[0154] S301: When the voltage state of the first input voltage is an undervoltage state, determine whether the first input voltage is less than a third preset voltage; if so, execute step S302; if not, execute step S303.

[0155] The third preset voltage is a lower limit value of a standard operating voltage corresponding to a load device of the target circuit, and the third preset voltage is different from the second preset voltage.

[0156] The purpose of judging whether the first input voltage is less than the third preset voltage is to determine whether the input voltage at the current moment can enable the load device of the target circuit to work normally.

[0157] It is understandable that, since during the operation of the target circuit, its corresponding load device usually sets a standard operating voltage range for stable operation, by determining whether the input voltage of the target circuit at the current moment is less than the lower limit value of the standard operating voltage corresponding to the load device of the target circuit, it is possible to determine whether the load device of the target circuit can operate normally.

[0158] If the first input voltage is less than the third preset voltage, it indicates that the current input voltage cannot enable the load device of the target circuit to operate normally. At this time, the control board of the target circuit can be controlled to disconnect the load device of the target circuit.

[0159] If the first input voltage is not less than the third preset voltage, it indicates that the input voltage at the current moment can enable the load device of the target circuit to work normally. At this time, the first input voltage of the target circuit can be re-acquired.

[0160] It is understandable that if the first input voltage is less than the third preset voltage, it means that the input voltage at the current moment is lower than the minimum voltage required for the load device to work normally, which may cause the load device of the target circuit to malfunction. Therefore, in order to protect the load device of the target circuit from damage and ensure the safe operation of other devices corresponding to the load device, it is necessary to control the control board of the target circuit to disconnect the load device of the target circuit.

[0161] If the first input voltage is not less than the third preset voltage, it means that the input voltage at the current moment has not reached the voltage required for the load device to work normally, which means that the load device of the target circuit can work normally. Therefore, in order to detect whether the voltage state of the input voltage of the target circuit will still be undervoltage, it is necessary to re-acquire the first input voltage of the target circuit.

[0162] S302: Controlling the control board of the target circuit to disconnect the load device of the target circuit.

[0163] Optionally, the specific implementation process of controlling the control board of the target circuit to disconnect the load device of the target circuit may, for example, be: processing and analyzing the first input voltage to obtain voltage information of the first input voltage; determining a change state of the first input voltage based on the voltage signal of the first input voltage; judging whether the change state is a continuous change state, and if so, determining that the first input voltage is a continuous undervoltage state, and controlling the control board of the target circuit to disconnect the load device of the target circuit; if not, determining that the first input voltage is a momentary undervoltage state, and reacquiring the first input voltage.

[0164] When it is determined that the voltage state of the input voltage at the current moment is an undervoltage state, it should also be detected whether the undervoltage state change is a continuous change. Because if the current undervoltage state changes to an instantaneous state, it may be due to the instability of the input voltage. Therefore, in order to improve the execution efficiency of the target circuit, the current undervoltage state can be changed to an instantaneous state without consideration.

[0165] The change state of the first input voltage includes: a continuous change state and an instantaneous change state. The continuous change state means that the input voltage at the current moment is always in an undervoltage state within a fixed period of time. The instantaneous change state means that the input voltage at the current moment is in an undervoltage state in a very short period of time.

[0166] It can be understood that when the input voltage changes continuously, it means that the input voltage at the current moment has been in an undervoltage state for a period of time, and at the current moment, the voltage value of the input voltage is also lower than the standard voltage range for normal operation of the load state.

[0167] When the input voltage changes in an instantaneous state, it means that the input voltage at the current moment changes in a very short time. This change is usually sudden and instantaneous, and may only last for a few milliseconds or a few microseconds. The instantaneous change state may be caused by a sudden disturbance of the target circuit.

[0168] Since the input voltage will gradually change with time, by processing and analyzing the input voltage at the current moment, corresponding protection measures can be taken in time for the target circuit corresponding to the input voltage, such as shutting down the load device, thereby ensuring the safety of the target circuit.

[0169] The purpose of judging whether the change state is a continuous change state is to determine whether the input voltage of the target circuit is always in an undervoltage state.

[0170] If the changing state is a continuous changing state, it indicates that the input voltage of the target circuit has been in an undervoltage state. Therefore, it is necessary to control the control board of the target circuit to disconnect the load device of the target circuit.

[0171] If the change state is not a continuous change state, it indicates that the input voltage of the target circuit is not always in an undervoltage state, and therefore, the first input voltage of the target circuit needs to be acquired.

[0172] S303: Acquire a first input voltage of the target circuit.

[0173] The explanation of step S303 is similar to that of step S101 and will not be repeated here.

[0174] S304: Acquire a third input voltage of the target circuit.

[0175] The third input voltage is the voltage entering the target circuit.

[0176] Since the target circuit is still in operation after the control board controlling the target circuit disconnects the load device of the target circuit, in order to detect whether the input voltage of the target circuit will change, it is necessary to re-acquire the third input voltage of the target circuit.

[0177] By acquiring the input voltage value at a specific moment, the voltage change corresponding to the specific moment can be obtained.

[0178] It is understandable that, since the voltage signal of the target circuit will gradually change with time, by acquiring the input voltage value of the target circuit at a specific moment, the voltage change corresponding to this specific moment can be obtained.

[0179] The third input voltage of the target circuit may be obtained directly through a voltage sensor, or indirectly through a resistance sensor, for example, and the present application does not impose any special restrictions on this.

[0180] S305: Determine whether the third input voltage is less than the fourth preset voltage; if so, execute step S306; if not, execute step S304.

[0181] The fourth preset voltage is a lower limit value of a standard operating voltage corresponding to the power supply device of the target circuit.

[0182] The purpose of judging whether the third input voltage is less than the fourth preset voltage is to determine whether the input voltage at the current moment can enable the power supply device of the target circuit to work normally.

[0183] It can be understood that since the corresponding power supply device of the target circuit usually sets a standard operating voltage range for stable operation during operation, by determining whether the input voltage of the target circuit at the current moment is less than the lower limit value of the standard operating voltage corresponding to the power supply device of the target circuit, it is possible to determine whether the power supply device of the target circuit can operate normally.

[0184] If the third input voltage is less than the fourth preset voltage, it indicates that the current input voltage cannot enable the power supply device of the target circuit to work normally. At this time, the control board of the target circuit can be controlled to disconnect the power supply device of the target circuit.

[0185] If the third input voltage is not less than the fourth preset voltage, it indicates that the input voltage at the current moment can enable the power supply device of the target circuit to work normally. At this time, the third input voltage of the target circuit needs to be re-acquired.

[0186] It is understandable that if the third input voltage is less than the fourth preset voltage, it means that the current input voltage may not be sufficient to drive the power supply device of the target circuit to work normally. Therefore, in this case, in order to protect the power supply device of the target circuit from damage, the control board of the target circuit can be controlled to disconnect the power supply device of the target circuit.

[0187] If the third input voltage is not less than the fourth preset voltage, it means that the current input voltage can meet the requirements of the normal operation of the power supply device of the target circuit. At this time, although the power supply device can work normally, in order to ensure the normal operation of the target circuit, it is necessary to re-acquire the third input voltage of the target circuit in order to detect whether there is an abnormality in the load device or the power supply device of the target circuit.

[0188] S306: Control the control board to disconnect the power supply device of the target circuit.

[0189] The circuit protection method based on input voltage provided by the present application, when it is determined that the voltage state of the first input voltage is an undervoltage state, firstly judge whether the voltage state of the first input voltage is less than the preset voltage corresponding to the software method, and then when it is determined that the voltage state of the first input voltage is less than the preset voltage corresponding to the software method, control the control board of the target circuit to disconnect the load device of the target circuit, and then continue to obtain the third input voltage of the target circuit, and when it is determined that the third input voltage is greater than the preset voltage corresponding to the hardware method, control the control board to disconnect the power supply device of the target circuit. This method not only expands the over-voltage and under-voltage protection range of the circuit, but also improves the stability and reliability of the circuit, thereby improving the operating efficiency and safety of the circuit system by detecting the voltage change state and taking corresponding software and hardware protection measures according to the circuit change state.

[0190] Figure 4 The process of the circuit protection method based on input voltage provided in the embodiment of the present application Figure 2 .like Figure 4 As shown, this embodiment is Figure 2 Based on the embodiment, a circuit protection method based on input voltage is described in detail. The circuit protection method based on input voltage provided by this embodiment includes:

[0191] S401: Determine whether a first input voltage of a target circuit matches a standard voltage of the target circuit, and the standard voltage is less than a first preset voltage; if so, execute step S402; if not, execute step S403.

[0192] The standard voltage is the voltage value required when the target circuit is in normal working state.

[0193] The standard voltage can be understood as an input voltage that remains stable within a specified range. Before adjustment, for a power system connected to a circuit breaker, when the actual voltage is lower than the rated voltage of the equipment within the allowable fluctuation range, it is necessary to clarify the limit range of the rated voltage value. At the same time, it is also necessary to determine the allowable fluctuation range of voltage stability during normal operation, as well as the specific circumstances when this range is exceeded. Taking China as an example, the national standard voltage is 220V, and the deviation range of the single-phase power supply voltage is specified to be +7% to -10% of the nominal voltage. Such standards can ensure the stable operation of the power system and provide the required electrical energy for the equipment.

[0194] When the input voltage of the target circuit is obtained, in order to determine whether the voltage of the input voltage is abnormal, it is necessary to determine whether the first input of the target circuit matches the standard voltage of the target circuit.

[0195] If the first input voltage of the target circuit matches the standard voltage of the target circuit, it indicates that there is no abnormality in the voltage of the input voltage. At this time, it can be determined that the voltage state of the first input voltage is normal.

[0196] If the first input voltage of the target circuit does not match the standard voltage of the target circuit, it indicates that the voltage of the input voltage is abnormal. At this time, it can be determined that the voltage state of the first input voltage is not a normal state.

[0197] It can be understood that if the first input voltage is less than the standard voltage, then it can be considered that the input voltage is insufficient to drive the target circuit to work normally; if the first input voltage is equal to the standard voltage, then it can be considered that the input voltage is sufficient to drive the target circuit to work normally; if the first input voltage is greater than the standard voltage, then it can be considered that the input voltage exceeds the range of normal operation of the target circuit.

[0198] S402: Determine that the voltage state of the first input voltage is a normal state.

[0199] S403: Determine whether the first input voltage is greater than the standard voltage; if so, execute step S404; if not, execute step S405.

[0200] The purpose of judging whether the first input voltage is greater than the standard voltage is to determine whether the first input voltage exceeds the range within which the target circuit can operate normally.

[0201] If the first input voltage is greater than the standard voltage, it indicates that the first input voltage exceeds the range in which the target circuit can operate normally. At this time, it can be determined that the voltage state of the first input voltage is an overvoltage state.

[0202] If the first input voltage is not greater than the standard voltage, it indicates that the first input voltage does not exceed the range in which the target circuit can work normally. At the same time, it can also be considered that the input voltage is insufficient to drive the target circuit to work normally. At this time, it can be determined that the voltage state of the first input voltage is an undervoltage state.

[0203] S404: Determine that the voltage state of the first input voltage is an overvoltage state.

[0204] S405: Determine that the voltage state of the first input voltage is an undervoltage state.

[0205] The circuit protection method based on input voltage provided by the present application, when obtaining the first input voltage of the target circuit, first determines whether the first input voltage matches the standard voltage of the target circuit, and then determines the voltage state of the first input voltage according to the matching situation. This method can not only avoid the situation where the circuit is unstable due to the input voltage being too high or too low, but also improve the reliability and stability of the circuit, thereby improving the working efficiency and energy utilization of the circuit.

[0206] Figure 5 This is a schematic diagram of the structure of the circuit protection device based on input voltage provided by this application. Figure 5 As shown, the present application provides a circuit protection device based on input voltage, and the circuit protection device based on input voltage 500 includes:

[0207] An acquisition module 501 is used to acquire a first input voltage of a target circuit;

[0208] A determination module 502, configured to determine a voltage state of the first input voltage according to the first input voltage;

[0209] A judgment module 503, configured to judge whether the first input voltage is greater than a first preset voltage when the voltage state is an overvoltage state, wherein the first preset voltage is an upper limit value of a standard operating voltage corresponding to a load device of the target circuit;

[0210] The control module 504 is used to control the control board of the target circuit to disconnect the load device of the target circuit when the first input voltage is greater than the first preset voltage.

[0211] Optionally, the acquisition module 501 is further used to acquire a second input voltage of the target circuit;

[0212] The judging module 503 is further configured to judge whether the second input voltage is greater than a second preset voltage, where the second preset voltage is an upper limit value of a standard operating voltage corresponding to the power supply device of the target circuit;

[0213] The control module 504 is further configured to control the control board to disconnect the power supply device of the target circuit when the second input voltage is greater than the second preset voltage.

[0214] Optionally, the judging module 503 is further configured to judge whether the first input voltage matches a standard voltage of the target circuit, and the standard voltage is less than the first preset voltage;

[0215] The determining module 502 is specifically configured to determine that the voltage state of the first input voltage is a normal state when the first input voltage matches the standard voltage;

[0216] The judging module 503 is further configured to judge whether the first input voltage is greater than the standard voltage when the first input voltage does not match the standard voltage;

[0217] The determining module 502 is specifically configured to determine that the voltage state of the first input voltage is an overvoltage state when it is determined that the first input voltage is greater than the standard voltage;

[0218] The determining module 502 is specifically configured to determine that the voltage state of the first input voltage is an undervoltage state when it is determined that the first input voltage is not greater than the standard voltage.

[0219] Optionally, the device further includes: a processing module 505;

[0220] The processing module 505 is used to process and analyze the first input voltage to obtain a voltage signal of the first input voltage;

[0221] The determining module 502 is further configured to determine a change state of the first input voltage according to a voltage signal of the first input voltage;

[0222] The judging module 503 is further used to judge whether the change state is a continuous change state;

[0223] The control module 504 is further configured to control the control board of the target circuit to disconnect the load device of the target circuit when the change state is a continuous change state.

[0224] Optionally, the judgment module 503 is further used to judge whether the first input voltage is less than a third preset voltage when the voltage state is an undervoltage state, and the third preset voltage is a lower limit value of a standard operating voltage corresponding to a load device of the target circuit;

[0225] The control module 504 is further configured to control the control board of the target circuit to disconnect the load device of the target circuit when the first input voltage is less than the third preset voltage.

[0226] Optionally, the acquisition module 501 is further used to acquire a third input voltage of the target circuit;

[0227] The judging module 503 is further configured to judge whether the third input voltage is less than a fourth preset voltage, where the fourth preset voltage is a lower limit value of a standard operating voltage corresponding to the power supply device of the target circuit;

[0228] The control module 504 is further configured to control the control board to disconnect the power supply device of the target circuit when the third input voltage is not less than the fourth preset voltage.

[0229] Figure 6 This is a schematic diagram of the structure of the circuit protection device based on input voltage provided by this application. Figure 6 As shown, the present application provides a circuit protection device based on input voltage. The circuit protection device based on input voltage 600 includes: a receiver 601 , a transmitter 602 , a processor 603 and a memory 604 .

[0230] Receiver 601, used for receiving instructions and data;

[0231] A transmitter 602, used for sending instructions and data;

[0232] Memory 604, used to store computer-executable instructions;

[0233] The processor 603 is used to execute the computer-executable instructions stored in the memory 604 to implement the various steps performed by the circuit protection method based on input voltage in the above embodiment. For details, please refer to the relevant description in the above embodiment of the circuit protection method based on input voltage.

[0234] Optionally, the memory 604 may be independent or integrated with the processor 603 .

[0235] When the memory 604 is independently provided, the electronic device further includes a bus for connecting the memory 604 and the processor 603 .

[0236] The present application also provides a computer-readable storage medium, in which computer-executable instructions are stored. When a processor executes the computer-executable instructions, an input voltage-based circuit protection method as performed by the above-mentioned input voltage-based circuit protection device is implemented.

[0237] It will be appreciated by those skilled in the art that all or some of the steps, systems, and functional modules / units in the methods disclosed above may be implemented as software, firmware, hardware, and appropriate combinations thereof. In hardware implementations, the division between the functional modules / units mentioned in the above description does not necessarily correspond to the division of physical components; for example, a physical component may have multiple functions, or a function or step may be performed by several physical components in cooperation. Some or all physical components may be implemented as software executed by a processor, such as a central processing unit, a digital signal processor, or a microprocessor, or implemented as hardware, or implemented as an integrated circuit, such as an application-specific integrated circuit. Such software may be distributed on a computer-readable medium, which may include a computer storage medium (or non-transitory medium) and a communication medium (or temporary medium). As known to those skilled in the art, the term computer storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Computer storage media include, but are 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 tapes, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store the desired information and can be accessed by a computer. In addition, it is well known to those of ordinary skill in the art that communication media typically contain 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 may include any information delivery media.

[0238] So far, the technical solution of the present application has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present application is obviously not limited to these specific embodiments, and the above embodiments are only used to illustrate the technical solution of the present application rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A circuit protection method based on input voltage, characterized in that: include: Acquire a first input voltage of a target circuit, and determine a voltage state of the first input voltage according to the first input voltage; When the voltage state is an overvoltage state, determining whether the first input voltage is greater than a first preset voltage, where the first preset voltage is an upper limit value of a standard operating voltage corresponding to a load device of the target circuit; When the first input voltage is greater than the first preset voltage, the control board controlling the target circuit disconnects the load device of the target circuit.

2. The method according to claim 1, characterized in that After the control board controlling the target circuit performs a disconnection process on the load device of the target circuit, the method further includes: Acquiring a second input voltage of the target circuit; Determining whether the second input voltage is greater than a second preset voltage, where the second preset voltage is an upper limit value of a standard operating voltage corresponding to a power supply device of the target circuit; When the second input voltage is greater than the second preset voltage, the control board is controlled to disconnect the power supply device of the target circuit.

3. The method according to claim 1, characterized in that The voltage state includes: a normal state, an overvoltage state, and an undervoltage state. The determining the voltage state of the first input voltage according to the first input voltage includes: determining whether the first input voltage matches a standard voltage of the target circuit, the standard voltage being less than the first preset voltage; When the first input voltage matches the standard voltage, determining that the voltage state of the first input voltage is a normal state; When the first input voltage does not match the standard voltage, determining whether the first input voltage is greater than the standard voltage; If yes, determining that the voltage state of the first input voltage is an overvoltage state; If not, it is determined that the voltage state of the first input voltage is an undervoltage state.

4. The method according to claim 1, characterized in that: The control board controlling the target circuit performs a disconnection process on the load device of the target circuit, including: Processing and analyzing the first input voltage to obtain a voltage signal of the first input voltage; determining a change state of the first input voltage according to a voltage signal of the first input voltage; Determining whether the change state is a continuous change state; If so, the control board controlling the target circuit disconnects the load device of the target circuit.

5. The method according to claim 1, characterized in that The method further comprises: When the voltage state is an undervoltage state, determining whether the first input voltage is less than a third preset voltage, wherein the third preset voltage is a lower limit value of a standard operating voltage corresponding to a load device of the target circuit; When the first input voltage is less than the third preset voltage, the control board controlling the target circuit disconnects the load device of the target circuit.

6. The method according to claim 5, characterized in that After the control board controlling the target circuit performs a disconnection process on the load device of the target circuit, the method further includes: Acquiring a third input voltage of the target circuit; Determining whether the third input voltage is less than a fourth preset voltage, where the fourth preset voltage is a lower limit value of a standard operating voltage corresponding to a power supply device of the target circuit; When the third input voltage is not less than the fourth preset voltage, the control board is controlled to disconnect the power supply device of the target circuit.

7. A circuit protection device based on input voltage, characterized in that: include: An acquisition module, used for acquiring a first input voltage of a target circuit; a determination module, configured to determine a voltage state of the first input voltage according to the first input voltage; a judgment module, used for judging whether the first input voltage is greater than a first preset voltage when the voltage state is an overvoltage state, wherein the first preset voltage is an upper limit value of a standard operating voltage corresponding to a load device of the target circuit; The control module is used to control the control board of the target circuit to disconnect the load device of the target circuit when the first input voltage is greater than the first preset voltage.

8. The method according to claim 7, characterized in that The device also includes: The acquisition module is further used to acquire a second input voltage of the target circuit; The judgment module is further used to judge whether the second input voltage is greater than a second preset voltage, where the second preset voltage is an upper limit value of a standard operating voltage corresponding to the power supply device of the target circuit; The control module is further used to control the control board to disconnect the power supply device of the target circuit when the second input voltage is greater than the second preset voltage.

9. A circuit protection device based on input voltage, characterized in that: include: Memory; processor; Wherein, the memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory to implement the circuit protection method based on input voltage according to any one of claims 1 to 7.

10. A computer storage medium, characterized in that: The computer storage medium stores computer execution instructions, and when the computer execution instructions are executed by a processor, they are used to implement the circuit protection method based on input voltage as described in any one of claims 1 to 7.

Images