Circuit protection device, energy router system, and control method and device of circuit protection device

Abstract

The invention provides a circuit protection device, an energy router system, and a control method and device of the circuit protection device. The circuit protection device comprises a parameter acquisition unit used for acquiring to-be-tested parameters of a to-be-protected circuit to obtain an acquisition signal carrying the to-be-tested parameters; the first signal processing unit is used for extracting a first effective signal from the acquired signal, buffering the first effective signal and then sending the first effective signal to the signal conditioning unit; the signal conditioning unit is used for carrying out amplitude adjustment processing on the first effective signal to obtain a conditioning signal in a target amplitude range; the second signal processing unit is used for extracting a second effective signal from the conditioning signal after buffering the conditioning signal; the protection unit is used for generating a fault signal and sending the fault signal to the control unit when determining that the to-be-detected parameter carried by the second effective signal reaches a protection threshold value; and the control unit is used for performing circuit protection processing on the to-be-protected circuit after receiving the fault signal.

Description

Technical Field

[0001] The present application relates to circuit protection technology, and more particularly to a circuit protection device, an energy router system, and a control method and device for the circuit protection device. Background Art

[0002] During the operation of the circuit, circuit faults may occur due to the influence of the working environment, etc. These faults may cause damage to the circuit and even bring some safety hazards. Therefore, the circuit needs to be fault protected to avoid damage caused by circuit faults.

[0003] At present, the protection method for circuits usually only has simple fault collection and processing functions, and often requires the coordinated action of multiple different circuit units. The signal processing and transmission processes between multiple units will cause signal interference, and due to the inherent deviations of different components, large errors will be caused, thereby reducing the accuracy of circuit protection and poor protection effect. Summary of the invention

[0004] The embodiments of the present application provide a circuit protection device, an energy router system, a control method, a device, an electronic device, a storage medium and a computer program product for a circuit protection device, which can provide a more accurate circuit protection effect.

[0005] The technical solution of the embodiment of the present application is implemented as follows:

[0006] The embodiment of the present application provides a circuit protection device, comprising: a parameter acquisition unit, a conditioning unit and a protection unit connected to a control unit, wherein the parameter acquisition unit, the conditioning unit and the protection unit are connected in sequence, and the conditioning unit comprises a first signal processing unit, a signal conditioning unit and a second signal processing unit connected in sequence, wherein:

[0007] The parameter acquisition unit is used to acquire the parameters to be measured of the circuit to be protected and obtain an acquisition signal carrying the parameters to be measured;

[0008] The first signal processing unit is used to extract a first valid signal from the collected signal, and buffer the first valid signal and then send it to the signal conditioning unit;

[0009] The signal conditioning unit is used to perform amplitude adjustment processing on the first valid signal to obtain a conditioned signal within a target amplitude range;

[0010] The second signal processing unit is used to extract a second valid signal from the conditioned signal after buffering the conditioned signal;

[0011] a protection unit, configured to generate a fault signal and send the fault signal to the control unit when it is determined that the parameter to be measured carried by the second valid signal reaches a protection threshold;

[0012] The control unit is used to perform circuit protection processing on the circuit to be protected after receiving the fault signal.

[0013] In the above scheme, the first signal processing unit includes a pre-stage filtering unit and a pre-stage buffering unit connected in sequence;

[0014] The pre-stage filtering unit is connected to the parameter acquisition unit and is used to filter the acquired signal to obtain the first valid signal;

[0015] The front-stage buffer unit is used for performing signal buffering between the parameter acquisition unit and the signal conditioning unit.

[0016] In the above solution, the signal conditioning unit is also used to suppress common-mode interference of the first effective signal.

[0017] In the above scheme, the second signal processing unit includes a post-stage buffer unit and a post-stage filter unit connected in sequence;

[0018] The post-stage buffer unit is used for performing signal buffering between the signal conditioning unit and the protection unit;

[0019] The post-stage filtering unit is used to filter the conditioned signal to obtain the second valid signal.

[0020] In the above scheme, the protection unit includes a signal comparison unit and a logic latch unit;

[0021] The signal comparison unit is configured to receive the second valid signal and a reference signal, compare the second valid signal and the reference signal, and output a fault signal when it is determined that the measured parameter corresponding to the second valid signal reaches a protection threshold corresponding to the reference signal;

[0022] The logic latch unit is used to perform denoising on the fault signal and then transmit it to the control unit.

[0023] In the above solution, the protection unit also includes a DSP unit;

[0024] The logic latch unit is also used to transmit the fault signal after noise removal to the DSP unit;

[0025] The DSP unit is used to lock the power device of the circuit to be protected according to the fault signal.

[0026] In the above solution, the parameter acquisition unit includes at least one of the following: a voltage acquisition unit, a current acquisition unit and a temperature acquisition unit.

[0027] An embodiment of the present application provides an energy router system, including an energy router and a circuit protection device as provided in the embodiment of the present application, wherein the energy router includes a circuit to be protected.

[0028] The present application provides a control method for a circuit protection device, including:

[0029] In response to receiving a fault signal, a control signal is generated and sent to a drive circuit to control the drive circuit to perform hardware locking on the circuit to be protected.

[0030] An embodiment of the present application provides a control device for a circuit protection device, comprising: a control module for generating a control signal in response to receiving a fault signal and sending the control signal to a drive circuit to control the drive circuit to perform hardware locking on the circuit to be protected.

[0031] An embodiment of the present application provides an electronic device, including:

[0032] A memory for storing executable instructions;

[0033] The processor is used to implement the control method of the circuit protection device provided in the embodiment of the present application when executing the executable instructions stored in the memory.

[0034] An embodiment of the present application provides a computer-readable storage medium storing executable instructions for causing a processor to execute and implement a control method for a circuit protection device provided in an embodiment of the present application.

[0035] An embodiment of the present application provides a computer program product storing a computer program for implementing a control method for a circuit protection device provided in an embodiment of the present application when executed by a processor.

[0036] The parameter acquisition unit of the embodiment of the present application is used to acquire the measured parameters of the circuit to be protected and obtain the acquisition signal carrying the measured parameters. The first signal processing unit is used to extract the first valid signal from the acquired signal, and send the first valid signal to the signal conditioning unit after buffering. The signal conditioning unit is used to perform amplitude adjustment processing on the first valid signal to obtain a conditioned signal within a target amplitude range. The second signal processing unit is used to extract the second valid signal from the conditioned signal after buffering. The protection unit is used to generate a fault signal and send it to the control unit when it is determined that the measured parameter carried by the second valid signal reaches a protection threshold. Finally, the control unit performs circuit protection processing on the circuit to be protected after receiving the fault signal. Through the various sub-units in the conditioning unit, signal buffering, extraction of valid signals and amplitude adjustment are realized, so that the second valid signal input to the protection unit is more accurate, thereby providing a more accurate circuit protection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is an optional structural diagram of a circuit protection device provided in an embodiment of the present application;

[0038] Figure 2 This is an optional structural diagram of a circuit protection device provided in an embodiment of the present application;

[0039] Figure 3 This is an optional structural diagram of a circuit protection device provided in an embodiment of the present application;

[0040] Figure 4 This is an optional structural diagram of a circuit protection device provided in an embodiment of the present application;

[0041] Figure 5 This is an optional structural diagram of a circuit protection device provided in an embodiment of the present application;

[0042] Figure 6 It is an optional structural diagram of the energy router system provided in the embodiment of the present application;

[0043] Figure 7 It is an optional structural diagram of an electronic device 700 provided in an embodiment of the present application. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings. The described embodiments should not be regarded as limiting the present application. All other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0045] In the following description, reference is made to “some embodiments”, which describe a subset of all possible embodiments, but it will be understood that “some embodiments” may be the same subset or different subsets of all possible embodiments and may be combined with each other without conflict.

[0046] In the following description, the terms "first\second\third" involved are merely used to distinguish similar objects and do not represent a specific ordering of the objects. It can be understood that "first\second\third" can be interchanged in a specific order or sequence where permitted, so that the embodiments of the present application described here can be implemented in an order other than that illustrated or described here.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein are only for the purpose of describing the embodiments of this application and are not intended to limit this application.

[0048] The embodiments of the present application provide a circuit protection device and a control method thereof, a control device, an electronic device, a storage medium and a computer program product, which can provide a more accurate circuit protection effect.

[0049] The circuit protection device provided in the embodiment of the present application is described below. Figure 1 , Figure 1It is an optional structural diagram of the circuit protection device provided in the embodiment of the present application. The circuit protection device 100 includes: a parameter acquisition unit 101, a conditioning unit 102 and a protection unit 103 connected to a control unit (not shown), the parameter acquisition unit 101, the conditioning unit 102 and the protection unit 103 are connected in sequence, the conditioning unit 102 includes a first signal processing unit 1021, a signal conditioning unit 1022 and a second signal processing unit 1023 connected in sequence, wherein the parameter acquisition unit 101 is used to acquire the measured parameters of the circuit to be protected 104 and obtain a collection signal carrying the measured parameters; the first signal processing unit 1021 is used to extract a first valid signal from the collection signal signal, and buffers the first valid signal and sends it to the signal conditioning unit 1022; the signal conditioning unit 1022 is used to perform amplitude adjustment processing on the first valid signal to obtain a conditioned signal within the target amplitude range; the second signal processing unit 1023 is used to extract the second valid signal from the conditioned signal after buffering the conditioned signal; the protection unit 103 is used to generate a fault signal and send it to the control unit when it is determined that the measured parameter carried by the second valid signal reaches a protection threshold; the control unit is used to perform circuit protection processing on the circuit to be protected 104 after receiving the fault signal.

[0050] In actual implementation, the parameter acquisition unit 101 is used to detect the measured parameters of the circuit to be protected. Here, the measured parameters may be, for example, voltage, current and / or temperature. Specifically, the parameter acquisition unit 101 may detect the measured parameters of the power device in the circuit to be protected 104. Here, the power device may be, for example, a thyristor, a thyristor, a field effect transistor or an insulated gate bipolar transistor, etc., but is not limited thereto. In an actual scenario, the circuit to be protected may be a self-consistent energy intelligent router circuit. The power device is a power device in a self-consistent energy intelligent router. Among them, the parameter acquisition unit 101 may be at least one of the following: a voltage acquisition unit, a current acquisition unit and a temperature acquisition unit. It is specifically used to detect the voltage, current and / or temperature of the power device in the circuit to be protected 104. In one embodiment, the parameter acquisition unit 101 includes a voltage acquisition unit, a current acquisition unit and a temperature acquisition unit at the same time, which are used to collect the voltage, current and temperature of the circuit to be protected. Among them, the voltage acquisition unit may be a voltage sensor, the current acquisition unit may be a current sensor, and the temperature acquisition unit may be a thermistor, such as an NTC resistor. In actual scenarios, the parameter acquisition unit can use an isolation sensor to ensure the isolation of the strong current system and the weak current system. For example, it can be an output current sensor to improve the anti-interference ability of the weak current signal.

[0051] In actual implementation, after acquiring the parameters to be measured, the parameter acquisition unit 101 generates an acquisition signal carrying the parameters to be measured, and transmits the acquisition signal to the first signal processing unit 1021. Specifically, after acquiring the parameters to be measured, the parameter acquisition unit 101 converts the parameters to be measured into analog signals to obtain acquisition signals. After receiving the acquisition signal, the first signal processing unit 1021 extracts effective signals from the acquisition signal to remove some interference signals and obtain a first effective signal. Here, the first signal processing unit 1021 is specifically used to isolate the parameter acquisition unit 101 and the signal conditioning unit 1022 to perform signal buffering between the two, avoid mutual influence of resistance between input and output, and eliminate the load effect of signal conditioning and the non-ideal source effect of the sensor of the parameter acquisition unit 101.

[0052] Next, the first effective signal is amplitude-adjusted by the signal conditioning unit 1022, and the first effective signal is adjusted to a conditioned signal with an amplitude within the target amplitude range. By limiting the amplitude of the signal, the components in the protection device are prevented from burning out due to a fault with an excessive amplitude. In one embodiment, the signal conditioning unit 1022 is specifically used to adjust the amplitude and impedance match the first effective signal. Here, impedance matching is mainly used to solve the signal attenuation during the transmission of weak current signals, and at the same time eliminate the inaccurate signal sampling caused by the load effect of the conditioning unit 102. In some embodiments, the signal conditioning unit 1022 is also used to suppress common-mode interference of the first effective signal. Specifically, the signal conditioning unit 1022 is composed of a differential amplifier circuit with a high common-mode rejection ratio (CMRR) combined with an offset removal circuit to suppress the common-mode interference of the previous input and avoid output offset caused by component tolerance.

[0053] After limiting, the second signal processing unit 1023 buffers the conditioned signal after limiting, and extracts the second valid signal from the buffered conditioned signal. Here, the second signal processing unit 1023 is specifically used to isolate the signal conditioning unit 1022 and the protection unit 103 to perform signal buffering between the two, while eliminating the load effect of the protection unit 103 and the non-ideal source effect of the signal conditioning, and extract the second valid signal from the conditioned signal, eliminate the interference signal therein, and ensure that the input signal of the protection unit 103 is within a safe range. It should be understood that during the signal transmission process, the parameters to be measured are still carried.

[0054] In actual implementation, the protection unit 103 determines whether the parameter to be measured carried by the second valid signal reaches the protection threshold. Exemplarily, if the parameter to be measured includes voltage, the corresponding protection threshold is the voltage protection threshold. When the voltage of the parameter to be measured reaches the voltage protection threshold, it is determined whether the parameter to be measured carried by the second valid signal reaches the protection threshold. In some embodiments, the parameter to be measured may include multiple types, for example, at least two of voltage, current or temperature. When there are multiple types of parameters to be measured, the corresponding protection threshold includes the threshold corresponding to each type of parameter to be measured. Exemplarily, if the parameter to be measured includes voltage, current and temperature, the protection threshold includes a voltage protection threshold, a current protection threshold and a temperature protection threshold.

[0055] In the embodiment of the present application, when the protection unit 103 determines that the measured parameter carried by the second valid signal reaches the protection threshold, it generates a fault signal and sends it to the control unit. In actual implementation, if the measured parameters include multiple types, as long as one of the measured parameters reaches the corresponding protection threshold, a fault signal of the corresponding type is generated and sent to the control unit. If there are multiple measured parameters that reach the corresponding protection threshold, multiple fault signals are generated and sent to the control unit respectively. After receiving the fault signal, the control unit performs circuit protection processing on the protected circuit. Here, if the voltage reaches the voltage protection threshold, the control unit performs overvoltage protection on the protected circuit 104. If the current reaches the current protection threshold, the control unit performs overcurrent protection on the protected circuit 104. If the temperature reaches the temperature protection threshold, the control unit performs overtemperature protection on the protected circuit 104. Specifically, the control unit can generate a switch tube drive signal through a PWM module, and then control the opening and closing of the switch tube through the action of the drive circuit to protect the protected circuit 104. In the embodiment of the present application, the control unit 104 can also include a human-computer interaction function, which can record the measured parameters and faults for users to monitor and view.

[0056] In an embodiment of the present application, a parameter acquisition unit acquires a measured parameter of a circuit to be protected to obtain an acquisition signal carrying the measured parameter; a first signal processing unit extracts a first valid signal from the acquired signal, and sends the first valid signal to the signal conditioning unit after buffering; the signal conditioning unit performs amplitude adjustment processing on the first valid signal to obtain a conditioned signal within a target amplitude range; a second signal processing unit buffers the conditioned signal and extracts a second valid signal from the conditioned signal; when the protection unit determines that the measured parameter carried by the second valid signal reaches a protection threshold, the protection unit generates a fault signal and sends the signal to the control unit; finally, after receiving the fault signal, the control unit performs circuit protection processing on the circuit to be protected; and through the various subunits in the conditioning unit, signal buffering, extraction of valid signals and amplitude adjustment are achieved, thereby making the second valid signal input to the protection unit more accurate, thereby providing a more accurate circuit protection effect.

[0057] In some embodiments, see Figure 2 , Figure 2 It is an optional structural diagram of the protection device of the circuit provided in the embodiment of the present application. The first signal processing unit 1021 includes a pre-stage filter unit 201 and a pre-stage buffer unit 202 connected in sequence; the pre-stage filter unit 201 is connected to the parameter acquisition unit 101, and is used to filter the acquired signal to obtain the first valid signal; the pre-stage buffer unit 202 is used to perform signal buffering between the parameter acquisition unit 101 and the signal conditioning unit 1022.

[0058] In actual implementation, the pre-stage filter unit 201 can be a filter for filtering the collected signal for harmonics, noise and burrs to extract the first valid signal. The pre-stage buffer unit 202 is used to buffer the signal. In one embodiment, the first signal processing unit 1021 also includes a pre-stage protection unit. The pre-stage protection unit is connected between the pre-stage filter unit 201 and the pre-stage buffer unit 202 to ensure that the input of the conditioning unit 102 is within a safe range.

[0059] In some embodiments, see Figure 3 , Figure 3 It is an optional structural diagram of the protection device of the circuit provided in the embodiment of the present application. The second signal processing unit 1023 includes a post-stage buffer unit 301 and a post-stage filter unit 302 connected in sequence; the post-stage buffer unit 301 is used to perform signal buffering between the signal conditioning unit 1022 and the protection unit 103; the post-stage filter unit 302 is used to filter the conditioned signal to obtain the second valid signal.

[0060] In actual implementation, the post-stage buffer unit 301 is used to buffer the signal. The post-stage filter unit 301 can be a filter for filtering the conditioned signal for harmonics, noise and burrs to extract the second valid signal. In one embodiment, the second signal processing unit 1023 also includes a post-stage protection unit. The post-stage protection unit is connected between the post-stage filter unit 302 and the protection unit 103 to ensure that the input of the protection unit 103 is within a safe range.

[0061] In some embodiments, see Figure 4 , Figure 4 It is an optional structural diagram of the protection device of the circuit provided in the embodiment of the present application. The protection unit 103 includes a signal comparison unit 401 and a logic latch unit 402; the signal comparison unit 401 is used to receive the second valid signal and the reference signal REF, compare the second valid signal and the reference signal REF, and output a fault signal when it is determined that the measured parameter corresponding to the second valid signal reaches the protection threshold corresponding to the reference signal; the logic latch unit 402 is used to denoise the fault signal and transmit it to the control unit.

[0062] In an embodiment of the present application, the protection unit 103 may be a fault detection unit through a hardware circuit. Specifically, the signal comparison unit 401 may be a comparator, which compares the second valid signal with the reference signal to determine whether the parameter to be measured reaches the protection threshold. When the protection threshold is reached, the signal comparison unit 401 will output a valid logic level (fault signal), thereby determining overvoltage, overcurrent and / or overtemperature. The logic latch unit 402 uses a multi-stage shift latch method to eliminate jitter and noise on the input logic level, and transmits the fault signal to the control unit for software integrated protection. In some embodiments, hardware locking can be performed by a drive circuit, and the fault signal is transmitted to a fault recording module for recording so that the user can view it. In some embodiments, the control unit may also generate a trip signal, and send the trip signal to the circuit to be protected so that the circuit to be protected is tripped.

[0063] In some embodiments, see Figure 5 , Figure 5 It is an optional structural diagram of the protection device of the circuit provided in the embodiment of the present application. The protection unit 103 also includes a DSP unit 501; the logic latch unit 402 is also used to transmit the fault signal after denoising to the DSP unit 501; the DSP unit 501 is used to lock the power device of the circuit to be protected 104 according to the fault signal.

[0064] In actual implementation, the fault signal after noise removal is transmitted to the DSP unit 501, so that the operator can query the hardware fault in real time. The DSP unit 501 also locks the power device of the power conversion unit and opens the relay of the unit according to whether the signal output by the logic latch unit 402 is a valid level, so as to perform hardware protection. In some embodiments, the DSP unit 501 can generate a trip signal and send it to the circuit to be protected 104.

[0065] The embodiment of the present application provides an energy router system, including an energy router and a circuit protection device provided in the embodiment of the present application, wherein the energy router includes a circuit to be protected. Here, the energy router may be a self-consistent energy intelligent router, which may be set up outdoors.

[0066] The energy router system provided in the embodiment of the present application is described below. Figure 6 , Figure 6 1 is an optional structural diagram of an energy router system provided in an embodiment of the present application, wherein the energy router 600 is connected to the circuit protection device 100. Specifically, the energy router 600 is connected to the parameter acquisition unit 101 in the circuit protection device 100. The energy router 600 includes a circuit to be protected 104. The parameter acquisition unit 101 is used to acquire parameters to be measured of the circuit to be protected 104.

[0067] Next, an electronic device for implementing the control method of the protection device of the above circuit provided in the embodiment of the present application is described. Figure 7 , Figure 7 It is an optional structural diagram of an electronic device 700 provided in an embodiment of the present application. In practical applications, the electronic device 700 can be implemented as a control unit of a circuit protection device 100. The electronic device that implements the control method of the circuit protection device in an embodiment of the present application is described below.

[0068] Figure 7 The electronic device 700 shown includes: at least one processor 701 and a memory 702. The various components in the electronic device 700 are coupled together via a bus system 703. It is understood that the bus system 703 is used to achieve connection and communication between these components. In addition to the data bus, the bus system 703 also includes a power bus, a control bus, and a status signal bus. However, for the sake of clarity, the bus system 703 is not described in detail. Figure 7 Various buses are labeled as bus system 703.

[0069] Processor 701 can be an integrated circuit chip with signal processing capabilities, such as a general-purpose processor, a digital signal processor (DSP), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc., where the general-purpose processor can be a microprocessor or any conventional processor, etc.

[0070] The memory 702 may be removable, non-removable, or a combination thereof. Exemplary hardware devices include solid-state memory, hard disk drives, optical disk drives, etc. The memory 702 may optionally include one or more storage devices that are physically remote from the processor 701.

[0071] The memory 702 includes a volatile memory or a non-volatile memory, and may also include both volatile and non-volatile memories. The non-volatile memory may be a read-only memory (ROM), and the volatile memory may be a random access memory (RAM). The memory 702 described in the embodiment of the present application is intended to include any suitable type of memory.

[0072] In some embodiments, the memory 702 can store data to support various operations, examples of which include programs, modules, and data structures, or subsets or supersets thereof. In the embodiment of the present application, the memory 702 stores an operating system 7021 and a control device 7022 based on a circuit protection device; specifically,

[0073] Operating system 7021, including system programs for processing various basic system services and performing hardware-related tasks, such as a framework layer, a core library layer, a driver layer, etc., for implementing various basic services and processing hardware-based tasks;

[0074] In some embodiments, the control device of the circuit-based protection device provided in the embodiments of the present application can be implemented in a software manner. Figure 7 A control device 7022 of a circuit-based protection device stored in a memory 702 is shown, which may be software in the form of a program and a plug-in, etc., and includes the following software modules: a control module 70221, which is logical and can be arbitrarily combined or further split according to the functions implemented. The functions of each module will be described below.

[0075] In other embodiments, the control device of the circuit-based protection device provided in the embodiments of the present application can be implemented in hardware. As an example, the control device of the circuit-based protection device provided in the embodiments of the present application can be a processor in the form of a hardware decoding processor, which is programmed to execute the control method of the circuit-based protection device provided in the embodiments of the present application. For example, the processor in the form of a hardware decoding processor can adopt one or more application-specific integrated circuits (ASICs), DSPs, programmable logic devices (PLDs), complex programmable logic devices (CPLDs), field programmable gate arrays (FPGAs) or other electronic components.

[0076] The following will describe the control method of the circuit protection device provided by the embodiment of the present application in combination with the exemplary application and implementation of the control unit provided by the embodiment of the present application. The control method of the circuit protection device includes: in response to receiving a fault signal, generating a control signal and sending it to a drive circuit to control the drive circuit to perform hardware locking on the circuit to be protected.

[0077] In actual implementation, after receiving the fault signal, the control unit generates a control signal and sends it to the drive circuit to control the drive circuit to generate a drive signal to drive the switch tube to be turned on and off, thereby realizing hardware locking of the circuit to be protected, so as to protect the circuit to be protected from overvoltage, overcurrent and / or overtemperature. The drive signal can be, for example, a pulse width modulation (PWM) signal.

[0078] The following continues to describe an exemplary structure of the control device 7022 of the circuit protection device provided in the embodiment of the present application being implemented as a software module. In some embodiments, for example Figure 7 As shown, the software modules stored in the control device 7022 of the circuit protection device in the memory 702 may include:

[0079] The control module 70221 is used to generate a control signal in response to receiving a fault signal and send it to the drive circuit to control the drive circuit to perform hardware locking on the circuit to be protected.

[0080] It should be noted that the description of the device of the embodiment of the present application is similar to the description of the above-mentioned method embodiment, and has similar beneficial effects as the method embodiment, so it will not be repeated.

[0081] The embodiment of the present application provides a computer program product, which includes computer instructions, and the computer instructions are stored in a computer-readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes the control method of the protection device of the circuit described in the embodiment of the present application.

[0082] An embodiment of the present application provides a computer-readable storage medium storing executable instructions, wherein executable instructions are stored. When the executable instructions are executed by a processor, the processor will execute the control method of the protection device of the circuit provided by the embodiment of the present application.

[0083] In some embodiments, the computer-readable storage medium may be a memory such as FRAM, ROM, PROM, EPROM, EEPROM, flash memory, magnetic surface storage, optical disk, or CD-ROM; or it may be various devices including one or any combination of the above memories.

[0084] In some embodiments, executable instructions may be in the form of a program, software, software module, script or code, written in any form of programming language (including compiled or interpreted languages, or declarative or procedural languages), and may be deployed in any form, including as a stand-alone program or as a module, component, subroutine or other unit suitable for use in a computing environment.

[0085] As an example, executable instructions may, but need not, correspond to a file in a file system, may be stored as part of a file that stores other programs or data, such as in one or more scripts in a HyperText Markup Language (HTML) document, in a single file dedicated to the program in question, or in multiple coordinated files (e.g., files storing one or more modules, subroutines, or code portions).

[0086] By way of example, executable instructions may be deployed to be executed on one computing device, or on multiple computing devices located at one site, or on multiple computing devices distributed across multiple sites and interconnected by a communication network.

[0087] In summary, the embodiments of the present application can provide a more accurate circuit protection effect.

[0088] The above is only an embodiment of the present application and is not intended to limit the protection scope of the present application. Any modifications, equivalent substitutions and improvements made within the spirit and scope of the present application are included in the protection scope of the present application.

Claims

1. A circuit protection device, characterized in that: include: A parameter acquisition unit, a conditioning unit and a protection unit connected to the control unit, wherein the parameter acquisition unit, the conditioning unit and the protection unit are connected in sequence, and the conditioning unit includes a first signal processing unit, a signal conditioning unit and a second signal processing unit connected in sequence, wherein: The parameter acquisition unit is used to acquire the parameters to be measured of the circuit to be protected and obtain an acquisition signal carrying the parameters to be measured; The first signal processing unit is used to extract a first valid signal from the collected signal, and buffer the first valid signal and then send it to the signal conditioning unit; The signal conditioning unit is used to perform amplitude adjustment processing on the first valid signal to obtain a conditioned signal within a target amplitude range; The second signal processing unit is used to extract a second valid signal from the conditioned signal after buffering the conditioned signal; a protection unit, configured to generate a fault signal and send the fault signal to the control unit when it is determined that the parameter to be measured carried by the second valid signal reaches a protection threshold; The control unit is used to perform circuit protection processing on the circuit to be protected after receiving the fault signal.

2. The protection device according to claim 1, characterized in that: The first signal processing unit includes a pre-stage filtering unit and a pre-stage buffering unit connected in sequence; The pre-stage filtering unit is connected to the parameter acquisition unit and is used to filter the acquired signal to obtain the first valid signal; The front-stage buffer unit is used for performing signal buffering between the parameter acquisition unit and the signal conditioning unit.

3. The protection device according to claim 1, characterized in that: The signal conditioning unit is further used to suppress common-mode interference on the first effective signal.

4. The protection device according to claim 1, characterized in that: The second signal processing unit includes a post-stage buffer unit and a post-stage filter unit connected in sequence; The post-stage buffer unit is used for performing signal buffering between the signal conditioning unit and the protection unit; The post-stage filtering unit is used to filter the conditioned signal to obtain the second valid signal.

5. The protection device according to claim 1, characterized in that: The protection unit includes a signal comparison unit and a logic latch unit; The signal comparison unit is used to receive the second valid signal and the reference signal, compare the second valid signal and the reference signal, and output a fault signal when it is determined that the measured parameter corresponding to the second valid signal reaches the protection threshold corresponding to the reference signal; The logic latch unit is used to perform denoising on the fault signal and then transmit it to the control unit.

6. The protection device according to claim 5, characterized in that: The protection unit also includes a DSP unit; The logic latch unit is also used to transmit the fault signal after noise removal to the DSP unit; The DSP unit is used to lock the power device of the circuit to be protected according to the fault signal.

7. The protection device according to claim 1, characterized in that: The parameter acquisition unit includes at least one of the following: a voltage acquisition unit, a current acquisition unit and a temperature acquisition unit.

8. An energy router system, characterized in that: It comprises an energy router and a circuit protection device as described in any one of claims 1 to 7, wherein the energy router comprises a circuit to be protected.

9. A control method for a circuit protection device according to any one of claims 1 to 7, characterized in that: include: In response to receiving a fault signal, a control signal is generated and sent to a drive circuit to control the drive circuit to perform hardware locking on the circuit to be protected.

10. A control device for a circuit protection device according to any one of claims 1 to 7, characterized in that: include: The control module is used for generating a control signal in response to receiving a fault signal and sending the control signal to the drive circuit to control the drive circuit to perform hardware locking on the circuit to be protected.

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