Electric quantity fault checking circuit of electric energy meter and related device

Abstract

The invention relates to the technical field of data processing, and discloses an electric energy meter electric quantity fault checking circuit and a related device, the electric energy meter electric quantity fault checking circuit comprises a main control chip circuit module, an interface circuit module, a micro control unit MCU filter capacitor circuit module and a light emitting diode LED indicating lamp circuit module, the fifth end of the main control chip circuit module is connected to the MCU filter capacitor circuit module; the eleventh end of the main control chip circuit module is connected to the interface circuit module; the thirteenth end of the main control chip circuit module is connected to the interface circuit module through a sixty-second resistor; the twenty-fifth end of the main control chip circuit module is connected to the LED indicating lamp circuit module; the thirty-second end of the main control chip circuit module is connected to the interface circuit module through an eighty-eighth resistor; and the twenty-ninth end of the main control chip circuit module is connected to the interface circuit module through an eighty-ninth resistor, so that the accuracy of checking and analyzing the electric quantity fault of the electric energy meter can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of data processing, and in particular to an electric energy meter electric quantity fault detection circuit and a related device. Background Art

[0002] At present, the field calibrator of the energy meter can only collect data from the first circuit, but cannot collect data from the second circuit at the same time, which further leads to a lack of comprehensive data when detecting the power balance of the energy meter. The existing equipment cannot automatically determine whether the wiring is correct in combination with the reactive power flow direction of other circuits. However, wiring errors are an important cause of the power imbalance of the energy meter. Since it is impossible to automatically analyze the power flow direction and wiring conditions of multiple circuits, it is difficult to find the power imbalance problem caused by wiring errors. Furthermore, the field calibrator of the energy meter can only obtain the data of the first circuit to the host computer, and cannot obtain the data of the second circuit for comparative analysis. The power imbalance of the energy meter is often discovered by comparing the data of different circuits, which makes it impossible to discover and analyze this imbalance in time. Therefore, how to improve the accuracy of the power meter power imbalance fault inspection and analysis process has become a problem that needs to be solved urgently. Summary of the invention

[0003] The present invention provides an electric energy meter electric quantity fault detection circuit and related devices to solve the technical problem of how to improve the accuracy of the electric energy meter electric quantity imbalance fault detection and analysis process.

[0004] In a first aspect, an electric energy meter power fault detection circuit is provided, which is applied to an electric energy meter power fault detection device. The electric energy meter power fault detection circuit comprises: a main control chip circuit module, an interface circuit module, a micro control unit MCU filter capacitor circuit module and a light emitting diode LED indicator circuit module, wherein:

[0005] The fifth and sixth ends of the main control chip circuit module are connected to the MCU filter capacitor circuit module; the eleventh, twelfth, fifteenth and seventeenth ends of the main control chip circuit module are connected to the interface circuit module (interface circuit module with the preamplifier module); the thirteenth end of the main control chip circuit module is connected to the interface circuit module (interface circuit module with the preamplifier module) through resistor sixty-two; the twenty-fifth and twenty-sixth ends of the main control chip circuit module are connected to the LED indicator circuit module; the thirty-second end of the main control chip circuit module is connected to the interface circuit module (the first universal serial bus (USB) to serial port circuit module) through the eighty-eighth resistor; the twenty-ninth end of the main control chip circuit module is connected to the interface circuit module (the first USB to serial port circuit module) through the eighty-ninth resistor

[0006] In a possible implementation, the main control chip circuit module further includes a first peripheral circuit; the first peripheral circuit includes: a sixth crystal oscillator, a 127th capacitor and a 128th capacitor, wherein:

[0007] The second end of the main control chip circuit module is connected to the first end of the sixth crystal oscillator X6 and the first end of the one-hundred-and-twenty-seventh capacitor C127; the second end of the sixth crystal oscillator X6 is connected to the first end of the one-hundred-and-twenty-eighth capacitor C128 and the third end of the main control chip circuit module; the second end of the one-hundred-and-twenty-seventh capacitor C127 is connected to ground; the second end of the one-hundred-and-twenty-eighth capacitor C128 is connected to ground.

[0008] In a possible implementation, the main control chip circuit module further includes a second peripheral circuit; the second peripheral circuit includes: a seventy-ninth resistor, a first switch and a one hundred and twenty-fourth capacitor, wherein:

[0009] The fifth and sixth ends of the main control chip circuit module are connected to the first power supply (+3.3V) and the first end of the seventy-ninth resistor; the second end of the seventy-ninth resistor is connected to the tenth end NRST of the main control chip circuit module, the second end of the first switch TS and the first end of the one-hundred-and-twenty-fourth capacitor; the first end of the first switch TS is connected to the ground and the second end of the one-hundred-and-twenty-fourth capacitor.

[0010] In a possible implementation, the main control chip circuit module includes a third peripheral circuit; the third peripheral circuit includes: a fifth crystal oscillator, a 125th capacitor and a 126th capacitor, wherein:

[0011] The eighth end of the main control chip circuit module is connected to the first end of the fifth crystal oscillator and the first end of the one-hundred-and-twenty-sixth capacitor C126; the second end of the fifth crystal oscillator is connected to the ninth end of the main control chip circuit module and the first end of the one-hundred-and-twenty-fifth capacitor C125; the first test end and the second test end of the fifth crystal oscillator are grounded; the second end of the one-hundred-and-twenty-sixth capacitor C126 is connected to the ground; the second end of the one-hundred-and-twenty-fifth capacitor C125 is connected to the ground.

[0012] In a possible implementation, the MCU filter capacitor circuit module includes a one hundred and forty-sixth capacitor C146 and a one hundred and forty-fifth capacitor C145, wherein:

[0013] The first end of the first-one-hundred-forty-sixth capacitor C146 is connected to the first power supply; the second end of the first-one-hundred-forty-sixth capacitor C146 is connected to the ground; the first end of the first-one-hundred-forty-fifth capacitor C145 is connected to the first power supply; the second end of the first-one-hundred-forty-fifth capacitor C145 is connected to the ground.

[0014] In a possible implementation, the LED indicator light circuit module includes a seventy-eighth resistor, a sixth resistor and a third LED, wherein:

[0015] The first end of the seventy-eighth resistor is connected to the first power supply; the second end of the seventy-eighth resistor is connected to the first end of the third LED; the first end of the sixth resistor is connected to the first power supply; the second end of the sixth resistor is connected to the second end of the third LED; the third end of the third LED is connected to the first LED pin; and the fourth end of the third LED is connected to the second LED pin.

[0016] In a possible implementation, the interface circuit module includes an interface circuit with a preamplifier module, wherein:

[0017] The first end of the interface circuit with the preamplifier module is connected to the second power supply; the second end of the interface circuit with the preamplifier module is connected to the twelfth end ADCLK of the main control chip circuit module; the third end and the fifth end of the interface circuit with the preamplifier module are connected to the ground; the fourth end of the interface circuit with the preamplifier module is connected to the thirteenth end ADDIN of the main control chip circuit module through the resistor sixty-two; the sixth end of the interface circuit with the preamplifier module is connected to the seventeenth end ADDOUT of the main control chip circuit module; the seventh end of the interface circuit with the preamplifier module is connected to the eleventh end ADDRDY of the main control chip circuit module; the eighth end of the interface circuit with the preamplifier module is connected to the fifteenth end ADCS of the main control chip circuit module.

[0018] In a possible implementation, the interface circuit module includes a coprocessor interface circuit, wherein:

[0019] The first and second ends of the coprocessor interface circuit are connected to a first power supply; the third and fifth ends of the coprocessor interface circuit are connected to ground; the sixth end of the coprocessor interface circuit is connected to the thirty-second end RXD of the main control chip circuit module through resistor eighty-eight; the seventh end of the coprocessor interface circuit is connected to the twenty-ninth end TXD of the main control chip circuit module through resistor eighty-ninth; the tenth end of the coprocessor interface circuit is connected to LED3; the eleventh end of the coprocessor interface circuit is connected to LED4; and the twelfth end of the coprocessor interface circuit is connected to ground.

[0020] In a possible implementation, the interface circuit module includes a Type-C interface circuit module; the Type-C interface circuit module includes: an A1 terminal, an A4 terminal, an A5 terminal, an A6 terminal, an A7 terminal, an A9 terminal, an A12 terminal, a B1 terminal, a B4 terminal, a B5 terminal, a B6 terminal, a B7 terminal, a B9 terminal, a B12 terminal and an EP terminal, wherein:

[0021] The A1, A12, B1 and B12 terminals of the Type-C interface circuit module are all connected to ground; the A4, A9, B4 and B9 terminals of the Type-C interface circuit module are all connected to VBUS; the A6 and B6 terminals of the Type-C interface circuit module are connected to UD+; the A7 and B7 terminals of the Type-C interface circuit module are connected to UD-; the A5 terminal of the Type-C interface circuit module is connected to the first end of the sixty-ninth resistor; the second end of the sixty-ninth resistor is connected to ground; the B5 terminal of the Type-C interface circuit module is connected to the first end of the sixty-eighth resistor; the second end of the sixty-eighth resistor is connected to ground; the EP terminal of the Type-C interface circuit module is connected to ground.

[0022] In a second aspect, an electric energy meter power fault detection device is provided, the electric energy meter power fault detection device comprising a circuit board and an electric energy meter power fault detection circuit as described in any one of the first aspects, the electric energy meter power fault detection circuit being arranged on the circuit board.

[0023] In a third aspect, an electric energy meter power fault inspection device is provided, the electric energy meter power fault inspection device comprising a shell and an electric energy meter power fault inspection device as in the second aspect, the electric energy meter power fault inspection device being arranged inside the shell.

[0024] In the scheme implemented by the electric energy meter power fault detection circuit and related devices provided in the embodiment of the present application, the electric energy meter power fault detection circuit includes: a main control chip circuit module, an interface circuit module, a micro control unit MCU filter capacitor circuit module and a light emitting diode LED indicator light circuit module, wherein:

[0025] The fifth and sixth ends of the main control chip circuit module are connected to the MCU filter capacitor circuit module; the eleventh, twelfth, fifteenth and seventeenth ends of the main control chip circuit module are connected to the interface circuit module; the thirteenth end of the main control chip circuit module is connected to the interface circuit module through resistor sixty-two; the twenty-fifth and twenty-sixth ends of the main control chip circuit module are connected to the LED indicator light circuit module; the thirty-second end of the main control chip circuit module is connected to the interface circuit module through the eighty-eighth resistor; the twenty-ninth end of the main control chip circuit module is connected to the interface circuit module through the eighty-ninth resistor, which can effectively improve the accuracy of the electric energy meter power imbalance fault inspection and analysis process, and is conducive to achieving the purpose of more accurate and efficient electric energy meter power imbalance fault inspection and analysis. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0027] Figure 1 It is a schematic diagram of a comparative analysis process of collecting main console data and first loop detection data in one embodiment of the present invention;

[0028] Figure 2 It is a structural schematic diagram of an electric energy meter electric quantity fault detection circuit in one embodiment of the present invention;

[0029] Figure 3 is a schematic diagram of the structure of the main control chip circuit in one embodiment of the present invention;

[0030] Figure 4 It is a structural schematic diagram of an MCU filter capacitor circuit module in one embodiment of the present invention;

[0031] Figure 5 is a schematic diagram of the structure of an LED indicator light circuit module in one embodiment of the present invention;

[0032] Figure 6 It is a schematic diagram of the structure of the interface circuit with the preamplifier module in one embodiment of the present invention;

[0033] Figure 7 is a schematic diagram of the structure of a coprocessor interface circuit in one embodiment of the present invention;

[0034] Figure 8 is a schematic diagram of the structure of a Type-C interface circuit module in one embodiment of the present invention;

[0035] Fig. 9 is a schematic structural diagram of a first USB-to-serial port circuit module in one embodiment of the present invention;

[0036] Fig.10 is a schematic structural diagram of a second USB-to-serial port circuit module in one embodiment of the present invention;

[0037] Fig.11 is a schematic diagram of the structure of a serial port transceiver interface circuit module in one embodiment of the present invention;

[0038] Fig.12 It is a structural diagram of a serial port three-transmitting and receiving interface circuit module in one embodiment of the present invention;

[0039] Fig.13 is a schematic diagram of the structure of a SWD download interface circuit module in one embodiment of the present invention;

[0040] Fig.14 It is a schematic diagram of the structure of a PCB of an electric energy meter electric quantity fault detection circuit in one embodiment of the present invention;

[0041] Fig.15 It is a schematic diagram of the appearance structure of an electric energy meter electric quantity fault detection device in one embodiment of the present invention;

[0042] Fig.16 It is a schematic diagram of a screen display interface of an electric energy meter electric quantity fault detection device in one embodiment of the present invention. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] It should be noted that, if there is no conflict, the various features in the embodiments of the present application can be combined with each other, all within the scope of protection of the present application. In addition, although the functional module division is performed in the device schematic diagram and the logical order is shown in the flow chart, in some cases, the steps shown or described can be performed in a sequence different from the module division in the device or the flow chart. Furthermore, the words "first", "second", "third", etc. used in this application do not limit the data and execution order, but only distinguish the same items or similar items with basically the same functions and effects.

[0045] In order to better understand the electric energy meter power fault inspection circuit provided by the embodiment of the present application, the existing scheme is first briefly introduced below. In the existing scheme, the electric energy meter field calibrator can only collect metering loop data samples and can only analyze the single loop data. It is impossible to obtain the second loop data of the console, and it is impossible to analyze and compare the two loops of data to draw a vector diagram of the two loops of data to intuitively compare the two loops of data. Now the new device is connected to the first loop to obtain the first loop data, and then the second loop data can be obtained and displayed on the same device. The vector diagram of the two loops of data is drawn through the two loops of data to intuitively analyze the voltage and circuit data of the two sets of data, improve the judgment reliability, and efficiently analyze and judge the data to solve related problems in the work. It is necessary to improve the hardware of the equipment, improve and upgrade the software, and change the operation method. The multi-circuit data sampling is realized in the metering device in the substation to achieve the comparison and analysis of two sets of data, which plays a role in automatic analysis to reduce the error rate of manual analysis and improve the reliability of wiring judgment. The equipment data is obtained by connecting the power meter field calibrator through the RS232 (serial communication interface standard) communication line. The STM32 (32-bit microcontroller developed based on the ARM Cortex-M core) main control chip sends instructions to obtain the test data of the calibrator and the second loop data input. After obtaining the data, the stdarg.h header file in the C programming language is used to realize the acquisition of variable-length data in serial communication. The strstr() function in the string.h header file and the self-encapsulated MyStrcpy() function are used to parse the acquired data. The code is written in the serial port screen through the two sets of data obtained to obtain the difference between the two sets of data and draw a vector diagram.

[0046] In other words, the current electric energy meter field calibrator can only collect data samples of the metering circuit and conduct analysis on the wiring of the metering circuit alone. It cannot automatically determine whether the wiring is correct in combination with the active and reactive power flow directions of other circuits. The electric energy meter field calibrator can only obtain the first circuit data to the host computer through the RS232 interface, but cannot obtain the second circuit data, let alone realize comparative analysis of the two sets of data.

[0047] like Figure 1 As shown, Figure 1 The schematic diagram of the comparative analysis process of collecting the main console data and the first circuit detection data is shown as an example. In view of the above technical defects, a power station electric energy meter power imbalance fault analysis device is developed to obtain the data of the first circuit and the second circuit, analyze and compare the two sets of data, and draw a vector diagram of the two sets of data.

[0048] This application proposes an electric energy meter power fault detection circuit, such as Figure 2 As shown, Figure 2 The schematic diagram of the structure of the electric energy meter electric quantity fault detection circuit provided by the embodiment of the present invention. Figure 2As shown, the electric energy meter electric quantity fault detection circuit includes: a main control chip circuit module, an interface circuit module, a microcontroller unit (MCU) filter capacitor circuit module and a light emitting diode (LED) indicator light circuit module, wherein:

[0049] The fifth and sixth ends of the main control chip circuit module are connected to the MCU filter capacitor circuit module; the eleventh, twelfth, fifteenth and seventeenth ends of the main control chip circuit module are connected to the interface circuit module (interface circuit module with the preamplifier module); the thirteenth end of the main control chip circuit module is connected to the interface circuit module (interface circuit module with the preamplifier module) through resistor sixty-two; the twenty-fifth and twenty-sixth ends of the main control chip circuit module are connected to the LED indicator light circuit module; the thirty-second end of the main control chip circuit module is connected to the interface circuit module (the first USB to serial port circuit module) through the eighty-eighth resistor; the twenty-ninth end of the main control chip circuit module is connected to the interface circuit module (the first USB to serial port circuit module) through the eighty-ninth resistor.

[0050] For example, Figure 3 As shown, Figure 3The main control chip circuit is a schematic diagram. The main control chip U32 of the main control chip circuit module can be ST32F103; the fifth end of the main control chip circuit module can be a positive voltage reference (Voltage Reference Positive, VREF+) pin, and the sixth end can be an analog power supply / digital to analog conversion (Analog Power Supply / Digital to Analog, VDDA / DDA) pin; the eleventh end of the main control chip circuit module can be a PA0 pin (ADDRDY pin), the twelfth end can be a PA1 pin (Analog-Digital Clock (ADCLK) pin), the fifteenth end can be a PA4 pin (Analog-Digital Chip Select (ADCS) pin), and the seventeenth end can be a PA6 pin (Analog-Digital Data Output (Analog-Digital The thirteenth terminal of the main control chip circuit module may be the PA2 pin, connected to the interface circuit module with the preamplifier module through a resistor of sixty-two (the analog-to-digital data input (Analog-Digital Data Input, ADDIN) pin); the twenty-fifth terminal of the main control chip circuit module may be the PB13 pin connected to the LED indicator light circuit module (LED2 pin), and the twenty-sixth terminal may be the PB14 pin connected to the LED indicator light circuit module (LED1 pin); the thirty-second terminal of the main control chip circuit module may be the PA10 pin, connected to the first USB to serial port circuit module (Receive Data (RXD) pin) of the interface circuit module through an eighty-eighth resistor; the twenty-ninth terminal of the main control chip circuit module may be the PA9 pin, connected to the first USB to serial port circuit module (Transmit Data (TXD) pin) of the interface circuit module through an eighty-ninth resistor.

[0051] Among them, the resistance value of the 62nd resistor can be 100; the resistance values ​​of the 88th resistor and the 89th resistor can be 0, and the present application does not impose any limitation on this.

[0052] In a possible implementation, the second end of the main control chip circuit module is connected to the first peripheral circuit. The main control chip circuit module also includes a first peripheral circuit; the first peripheral circuit includes: a sixth crystal oscillator, a 127th capacitor and a 128th capacitor, wherein:

[0053] The second end of the main control chip circuit module is connected to the first end of the sixth crystal oscillator X6 and the first end of the one-hundred-and-twenty-seventh capacitor C127; the second end of the sixth crystal oscillator X6 is connected to the first end of the one-hundred-and-twenty-eighth capacitor C128 and the third end of the main control chip circuit module; the second end of the one-hundred-and-twenty-seventh capacitor C127 is connected to ground; the second end of the one-hundred-and-twenty-eighth capacitor C128 is connected to ground.

[0054] like Figure 3 As shown, the second end of the main control chip circuit module can be PC14-OSC32_IN, connected to the first end of the sixth crystal oscillator X6 and the first end of the 127th capacitor C127; the third end of the main control chip circuit module can be PC15-OSC32_OUT. The frequency of the sixth crystal oscillator X6 can be 32.768kHz, and the capacitance values ​​of the 127th capacitor C127 and the 128th capacitor C128 can both be 25pF.

[0055] In a possible implementation, the fifth terminal of the main control chip circuit module is connected to the second peripheral circuit. The main control chip circuit module also includes a second peripheral circuit; the second peripheral circuit includes: a seventy-ninth resistor, a first switch and a one hundred and twenty-fourth capacitor, wherein:

[0056] The fifth and sixth ends of the main control chip circuit module are connected to the first power supply (+3.3V) and the first end of the seventy-ninth resistor; the second end of the seventy-ninth resistor is connected to the tenth end NRST of the main control chip circuit module, the second end of the first switch TS and the first end of the one-hundred-and-twenty-fourth capacitor; the first end of the first switch TS is connected to the ground and the second end of the one-hundred-and-twenty-fourth capacitor.

[0057] like Figure 3 As shown, the fifth terminal of the main control chip circuit module can be a VREF+ pin, the sixth terminal can be a VDDA / DDA pin; the tenth terminal of the main control chip circuit module can be a negative reset (Negative Reset, NRST) pin. The first power supply can be VCC_3.3V (+3.3V); the resistance value of the seventy-ninth resistor can be 10K; the first switch SW1 can be TS-1088-AR02016; the capacitance value of the one hundred and twenty-fourth capacitor can be 10uF.

[0058] In a possible implementation, the eighth terminal of the main control chip circuit module is connected to the third peripheral circuit. The main control chip circuit module includes a third peripheral circuit; the third peripheral circuit includes: the third peripheral circuit includes: a fifth crystal oscillator, a 125th capacitor and a 126th capacitor, wherein:

[0059] The eighth end of the main control chip circuit module is connected to the first end of the fifth crystal oscillator and the first end of the one-hundred-and-twenty-sixth capacitor C126; the second end of the fifth crystal oscillator is connected to the ninth end of the main control chip circuit module and the first end of the one-hundred-and-twenty-fifth capacitor C125; the first test end and the second test end of the fifth crystal oscillator are grounded; the second end of the one-hundred-and-twenty-sixth capacitor C126 is connected to the ground; the second end of the one-hundred-and-twenty-fifth capacitor C125 is connected to the ground.

[0060] like Figure 3 As shown, the eighth terminal of the main control chip circuit module may be the PF0-OSC_IN pin; the ninth terminal of the main control chip circuit module may be the PF1-OSC_OUT pin. The frequency of the fifth crystal oscillator may be 8 MHz; the capacitance values ​​of the 126th capacitor C126 and the 125th capacitor C125 may both be 20 pF.

[0061] In a possible implementation, the seventh terminal of the main control chip circuit module may be a VSSA / SSA pin, connected to ground; the eleventh terminal of the main control chip circuit module is an ADDRDY pin; the twelfth terminal of the main control chip circuit module is an ADCLK pin; the thirteenth terminal of the main control chip circuit module is connected to the first end of the sixty-second resistor; the second end of the sixty-second resistor is connected to ADDIN; the fifteenth terminal of the main control chip circuit module is an ADCS pin; the seventeenth terminal of the main control chip circuit module is an ADDOUT pin; the twenty-fifth terminal of the main control chip circuit module is an LED2 pin; the twenty-sixth terminal of the main control chip circuit module is an LED1 pin; the twenty-ninth terminal of the main control chip circuit module is connected to the first end of the eighty-ninth resistor; the second end of the eighty-ninth resistor is connected to TXD; the thirty-second terminal of the main control chip circuit module is connected to the first end of the eighty-eighth resistor; the second end of the eighty-eighth resistor is connected to RXD; the thirty-fifth terminal of the main control chip circuit module is a serial wire debug input / output (Serial Wire Debug Input / Output, SWDIO) pin; the thirty-sixth terminal of the main control chip circuit module is a serial wire clock (Serial Wire The forty-fourth end of the main control chip circuit module is the direction (Direction, DIR) pin; the forty-fifth end of the main control chip circuit module is the reset (RESET) pin; the forty-sixth end of the main control chip circuit module is the configuration 0 (Configuration 0, CFG0) pin; the forty-seventh end of the main control chip circuit module is the TCPCS pin; the forty-eighth end of the main control chip circuit module is the reset input (Reset Input, RSTI) pin.

[0062] In a possible implementation, the MCU filter capacitor circuit module includes a one hundred and forty-sixth capacitor C146 and a one hundred and forty-fifth capacitor C145, wherein:

[0063] The first end of the first-one-hundred-forty-sixth capacitor C146 is connected to the first power supply; the second end of the first-one-hundred-forty-sixth capacitor C146 is connected to the ground; the first end of the first-one-hundred-forty-fifth capacitor C145 is connected to the first power supply; the second end of the first-one-hundred-forty-fifth capacitor C145 is connected to the ground.

[0064] For example, Figure 4 As shown, Figure 4Schematic diagram of the structure of the MCU filter capacitor circuit module. The capacitance value of the first one hundred and forty-sixth capacitor C146 may be 10uF; the capacitance value of the first one hundred and forty-fifth capacitor C145 may be 100nF; and the first power supply may be VCC_3.3V (+3.3V).

[0065] In a possible implementation, the LED indicator light circuit module includes a seventy-eighth resistor, a sixth resistor and a third LED, wherein:

[0066] The first end of the seventy-eighth resistor is connected to the first power supply; the second end of the seventy-eighth resistor is connected to the first end of the third LED; the first end of the sixth resistor is connected to the first power supply; the second end of the sixth resistor is connected to the second end of the third LED; the third end of the third LED is connected to the first LED pin; and the fourth end of the third LED is connected to the second LED pin.

[0067] For example, Figure 5 As shown, Figure 5 The structure diagram of the LED indicator light circuit module is shown in FIG. wherein the resistance values ​​of the seventy-eighth resistor and the sixth resistor can both be 150R; the third LED can be MHK2396EGBTD; the first end is connected to the first power supply; the second end of the seventy-eighth resistor is connected to the first end of the third LED; the first power supply can be VCC_3.3V (+3.3V).

[0068] In a possible implementation, the interface circuit module includes an interface circuit with a preamplifier module, wherein:

[0069] The first end of the interface circuit with the preamplifier module is connected to the second power supply; the second end of the interface circuit with the preamplifier module is connected to the twelfth end ADCLK of the main control chip circuit module; the third end and the fifth end of the interface circuit with the preamplifier module are connected to the ground; the fourth end of the interface circuit with the preamplifier module is connected to the thirteenth end ADDIN of the main control chip circuit module through the resistor sixty-two; the sixth end of the interface circuit with the preamplifier module is connected to the seventeenth end ADDOUT of the main control chip circuit module; the seventh end of the interface circuit with the preamplifier module is connected to the eleventh end ADDRDY of the main control chip circuit module; the eighth end of the interface circuit with the preamplifier module is connected to the fifteenth end ADCS of the main control chip circuit module.

[0070] For example, Figure 6 As shown, Figure 6Schematic diagram of the structure of the interface circuit with the preamplifier module. The interface connector CN1 of the interface circuit with the preamplifier module may be S8B-PHDSS (LF) (SN); the second power supply may be AVCC_5V (+5V).

[0071] In a possible implementation, the interface circuit module includes a coprocessor interface circuit, wherein:

[0072] The first and second ends of the coprocessor interface circuit are connected to a first power supply; the third and fifth ends of the coprocessor interface circuit are connected to ground; the sixth end of the coprocessor interface circuit is connected to the thirty-second end RXD of the main control chip circuit module through resistor eighty-eight; the seventh end of the coprocessor interface circuit is connected to the twenty-ninth end TXD of the main control chip circuit module through resistor eighty-ninth; the tenth end of the coprocessor interface circuit is connected to LED3; the eleventh end of the coprocessor interface circuit is connected to LED4; and the twelfth end of the coprocessor interface circuit is connected to ground.

[0073] For example, Figure 7 As shown, Figure 7 : is a schematic diagram of the structure of the coprocessor interface circuit. Among them, the interface connector of the coprocessor interface circuit can be AFA07-S12FCC-00; the first power supply can be VCC_3.3V (+3.3V); the fourth end of the coprocessor interface circuit can be a BAT_TEST pin; the eighth end of the coprocessor interface circuit can be a TEMP pin; and the ninth end of the coprocessor interface circuit can be an EN pin.

[0074] In a possible implementation, the interface circuit module includes a Type-C interface circuit module; the Type-C interface circuit module includes: an A1 terminal, an A4 terminal, an A5 terminal, an A6 terminal, an A7 terminal, an A9 terminal, an A12 terminal, a B1 terminal, a B4 terminal, a B5 terminal, a B6 terminal, a B7 terminal, a B9 terminal, a B12 terminal and an EP terminal, wherein:

[0075] The A1, A12, B1 and B12 terminals of the Type-C interface circuit module are all connected to ground; the A4, A9, B4 and B9 terminals of the Type-C interface circuit module are all connected to VBUS; the A6 and B6 terminals of the Type-C interface circuit module are connected to UD+; the A7 and B7 terminals of the Type-C interface circuit module are connected to UD-; the A5 terminal of the Type-C interface circuit module is connected to the first end of the sixty-ninth resistor; the second end of the sixty-ninth resistor is connected to ground; the B5 terminal of the Type-C interface circuit module is connected to the first end of the sixty-eighth resistor; the second end of the sixty-eighth resistor is connected to ground; the EP terminal of the Type-C interface circuit module is connected to ground.

[0076] For example, Figure 8 As shown, Figure 8 The structure diagram of the Type-C interface circuit module is shown in FIG. Among them, the A1 end, A12 end, B1 end and B12 end of the USB2 of the Type-C interface circuit module can all be ground pins (GND pins); the A4 end, A9 end, B4 end and B9 end of the Type-C interface circuit module can all be VBUS pins; the A6 end of the Type-C interface circuit module can be a DP1 pin, and the B6 end can be a DP2 pin; the A7 end of the Type-C interface circuit module can be a DN1 pin, and the B7 end can be a DN2 pin; the A5 end of the Type-C interface circuit module can be a CC1 pin, and the B5 end can be a CC2 pin; the resistance values ​​of the sixty-ninth resistor and the sixty-eighth resistor can be 5.1k.

[0077] In a possible implementation, the interface circuit module includes a first universal serial bus (USB) to serial port circuit module; the first USB to serial port circuit module includes:

[0078] The first end of the first USB to serial port circuit module is connected to the A6 end and the B6 end UD+ of the Type-C interface circuit module; the second end of the first USB to serial port circuit module is connected to the A7 end and the B7 end UD- of the Type-C interface circuit module; the third end of the first USB to serial port circuit module is connected to the ground; the fifth end of the first USB to serial port circuit module is connected to the first end of the 103rd capacitor C103 and the first power supply (+3.3V); the second end of the 103rd capacitor C103 is connected to the ground; the sixth end of the first USB to serial port circuit module is connected to RXD; the seventh end of the first USB to serial port circuit module is connected to TXD; the eighth end of the first USB to serial port circuit module is connected to the first end of the 104th capacitor C104; the second end of the 104th capacitor C104 is connected to the ground.

[0079] For example, Fig. 9 As shown, Fig. 9 The structure diagram of the first USB to serial port circuit module is shown in FIG. 1 , wherein the interface connector U27 of the first USB to serial port circuit module may be CH340N; the first end of the first USB to serial port circuit module may be a UD+ pin; the second end of the first USB to serial port circuit module may be a UD- pin; the third end of the first USB to serial port circuit module may be a ground pin (GND pin); the fifth end of the first USB to serial port circuit module may be a VCC pin; the capacitance value of the 103rd capacitor C103 may be 100nF; the first power supply may be VCC_3.3V (+3.3V); the sixth end of the first USB to serial port circuit module may be a RXD pin; the seventh end of the first USB to serial port circuit module may be a TXD pin; the eighth end of the first USB to serial port circuit module may be a V3 pin; the capacitance value of the 104th capacitor C104 may be 100nF.

[0080] In a possible implementation, the interface circuit module includes a second USB-to-serial port circuit module; the second USB-to-serial port circuit module includes:

[0081] The first end of the second USB to serial port circuit module is connected to the A6 end and the B6 end UD+ of the Type-C interface circuit module; the second end of the second USB to serial port circuit module is connected to the A7 end and the B7 end UD- of the Type-C interface circuit module; the third end of the second USB to serial port circuit module is connected to the ground; the fifth end of the second USB to serial port circuit module is connected to the first end of the 147th capacitor C147 and the first power supply (+3.3V); the second end of the 147th capacitor C147 is connected to the ground; the sixth end of the second USB to serial port circuit module is connected to CH340_TX; the seventh end of the second USB to serial port circuit module is connected to CH340_RX; the eighth end of the second USB to serial port circuit module is connected to the first end of the 148th capacitor C148; the second end of the 148th capacitor C148 is connected to the ground.

[0082] For example, Fig.10 As shown, Fig.10: is a structural schematic diagram of the second USB to serial port circuit module. Among them, the interface connector of the second USB to serial port circuit module can be CH340 or CH340N; the first end of the second USB to serial port circuit module can be a UD+ pin; the second end of the second USB to serial port circuit module can be a UD- pin; the third end of the second USB to serial port circuit module can be a ground pin (GND pin); the fifth end of the second USB to serial port circuit module can be a VCC pin; the capacitance value of the 147th capacitor C147 can be 100nF; the first power supply can be VCC_3.3V (+3.3V); the sixth end of the second USB to serial port circuit module can be a CH340_TX pin; the seventh end of the second USB to serial port circuit module can be a CH340_RX pin; the eighth end of the second USB to serial port circuit module can be a V3 pin; the capacitance value of the 148th capacitor C148 can be 100nF.

[0083] In a possible implementation, the interface circuit module includes a serial port transceiver interface circuit module, wherein:

[0084] The first end of the serial port transceiver interface circuit module is connected to the first power supply; the second end of the serial port transceiver interface circuit module is connected to the ground; the third end of the serial port transceiver interface circuit module is connected to RXD; and the fourth end of the serial port transceiver interface circuit module is connected to TXD.

[0085] For example, Fig.11 As shown, Fig.11 : is a structural diagram of a serial port transceiver interface circuit module, wherein the interface processor CN4 of the serial port transceiver interface circuit module may be S4B-XH-A(LF)(SN); and the first power supply may be VCC_3.3V(+3.3V).

[0086] In a possible implementation, the interface circuit module includes a serial port three-transmitting and receiving interface circuit module, wherein:

[0087] The first end of the serial port three transceiver interface circuit module is connected to the first power supply; the second end of the serial port three transceiver interface circuit module is connected to the ground; the third end of the serial port three transceiver interface circuit module is connected to RXD3; the fourth end of the serial port three transceiver interface circuit module is connected to TXD3.

[0088] For example, Fig.12 As shown, Fig.12Schematic diagram of the structure of the serial port three-transceiver interface circuit module, wherein the interface processor CN5 of the serial port three-transceiver interface circuit module may be S4B-XH-A(LF)(SN); and the first power supply may be VCC_3.3V(+3.3V).

[0089] In a possible implementation, the interface circuit module includes a serial wire debug (SWD) download interface circuit module, wherein:

[0090] The first end of the SWD download interface circuit module is connected to the first power supply; the first test end U40 of the first end of the SWD download interface circuit module is connected to SWDIO; the second test end U41 of the first end of the SWD download interface circuit module is connected to SWCLK; the first test end U42 of the first end of the SWD download interface circuit module is connected to ground; the second end of the SWD download interface circuit module is connected to SWDIO; the third end of the SWD download interface circuit module is connected to SWCLK; and the fourth end of the SWD download interface circuit module is connected to ground.

[0091] For example, Fig.13 As shown, Fig.13 The schematic diagram of the structure of the SWD download interface circuit module is shown in FIG. 1 , wherein the interface connector CN2 of the Serial Wire Debugging (SWD) download interface circuit module may be XH-4AW; and the first power supply may be VCC_3.3V (+3.3V).

[0092] It can be understood that the main control chip circuit mentioned above, the core of which is the STM32F103 main control chip, is connected to multiple peripheral circuits, coordinates the work of each module, and is responsible for the control and data processing of the entire system. The Type-C interface circuit can be responsible for processing the connection and data transmission of the Type-C interface, and has high-speed data transmission and power supply functions. The MCU filter capacitor circuit can provide a stable power supply for the microcontroller, reduce power supply noise through the filter capacitor, and ensure the stable operation of the MCU. The LED indicator light can display the working status of the system through the LED light, such as whether the power is on, whether the data transmission is normal, etc. The serial port one transceiver interface and the serial port three transceiver interface can be used for serial communication to realize data transmission and reception; the interface can be used to communicate with other devices, such as sensors, external controllers, etc. The interface with the coprocessor can provide a connection interface with the coprocessor (such as a field programmable gate array (FPGA, Field-Programmable Gate Array), a digital signal processor (Digital Signal Processor, DSP), etc.), to realize the expansion of data processing and control functions. The USB to serial port circuit can convert the data of the USB interface into serial port data to realize communication between USB devices and serial port devices. The interface with the preamplifier module can provide a connection interface with the preamplifier module, which can be used for signal amplification and processing. The SWD download interface can be used for program download and debugging, which is implemented through the SWD protocol.

[0093] For example, Fig.14 As shown, Fig.14 The structure diagram of the printed circuit board (PCB) of the electric energy meter power fault detection circuit is shown in FIG. The main control can be STM32F103, the RS232 to TTL chip is MAX3232, and the display screen can be a Taojinchi serial port screen.

[0094] An embodiment of the present application also provides an electric energy meter power fault detection device, which includes a circuit board and an electric energy meter power fault detection circuit as in any of the aforementioned embodiments, and the electric energy meter power fault detection circuit is arranged on the circuit board.

[0095] An embodiment of the present application also provides an electric energy meter power fault inspection device, which includes a shell and an electric energy meter power fault inspection device as in the aforementioned embodiment, and the electric energy meter power fault inspection device is arranged inside the shell.

[0096] In a possible implementation, the main structure of the electric energy meter power fault detection device can be composed of a high-precision measurement module, a data processing and analysis module, a display and interaction module, a storage module and a communication module. Fig.15As shown, Fig.15 This is a schematic diagram of the appearance and structure of the electric energy meter power fault inspection equipment.

[0097] The high-precision measurement module includes voltage sensors, current sensors and power sensors, which can accurately collect various electrical parameters of the energy meter. The data processing and analysis module uses advanced digital signal processing technology and intelligent algorithms to process and analyze the collected data in real time to determine whether the power is balanced.

[0098] For example, Fig.16 As shown, Fig.16 This is a schematic diagram of the screen display interface of the electric energy meter power fault inspection device. The display and interaction module uses a high-definition display screen and a user-friendly operation interface, which allows users to view the device operation status and analysis results, and perform parameter settings and operation control. The storage module is used to store the collected data and analysis results for subsequent query and analysis.

[0099] The device collects the voltage, current, power and other parameters of the electric energy meter in real time through a high-precision measurement module. The collected data is transmitted to the STM32 main control chip. After the data is obtained, the stdarg.h header file in the C programming language is used to obtain the variable-length data in the serial communication. The obtained data is parsed through the strstr() function in the string.h header file and the self-encapsulated MyStrcpy() function. The code is written in the serial port screen to obtain the difference between the two sets of data and draw a vector diagram. The analysis results are displayed through the display and interaction module, and the storage module stores the data and results.

[0100] The above-mentioned electric energy meter power fault inspection equipment adopts high-precision sensors and advanced data analysis algorithms, which can quickly and accurately detect the power imbalance fault of the electric energy meter, and improve the efficiency and accuracy of fault detection. The data monitored by the high-precision detection module inside the electric energy meter calibrator is obtained through RS232 communication. The data is transmitted to the main control module, and the acquired data is parsed by writing algorithm code in the main control module. The electric energy meter power fault inspection equipment has a user-friendly operation interface and a simple and easy-to-understand operation process. Users can easily operate it without professional technical knowledge. It is convenient for users to manage and maintain the equipment anytime and anywhere, and improve the convenience of using the equipment.

[0101] It can be seen that in the above scheme, the following can be achieved: 1. High-precision sensor technology, by adopting advanced voltage and current sensors, ensure the accurate collection of electrical parameters of the energy meter; this is the basis for accurately judging the power imbalance fault, and the accuracy, stability and anti-interference ability of the sensor are crucial. 2. Intelligent data analysis and comparison, by developing efficient data analysis algorithms, it can quickly process a large amount of collected data and accurately identify the power imbalance situation; the algorithm should have adaptive capabilities and can be adjusted according to different types of energy meters and usage environments. 3. Real-time monitoring and rapid response, the equipment needs to have real-time monitoring functions and be able to monitor the energy meter uninterruptedly; once a power imbalance fault is found, it should be able to quickly issue an alarm so that timely measures can be taken to deal with it.

[0102] It should be understood that the order of execution of the steps in the above embodiment does not necessarily mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present invention.

[0103] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0104] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example. In actual applications, the above-mentioned functions can be distributed and completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above.

[0105] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. An electric energy meter electric quantity fault detection circuit, characterized in that: Applied to the electric energy meter power fault detection device, the electric energy meter power fault detection circuit includes: a main control chip circuit module, an interface circuit module, a micro control unit MCU filter capacitor circuit module and a light emitting diode LED indicator circuit module, wherein: The fifth end of the main control chip circuit module is connected to the MCU filter capacitor circuit module; the eleventh end of the main control chip circuit module is connected to the interface circuit module; the thirteenth end of the main control chip circuit module is connected to the interface circuit module through resistor sixty-two; the twenty-fifth end of the main control chip circuit module is connected to the LED indicator light circuit module; the thirty-second end of the main control chip circuit module is connected to the interface circuit module through the eighty-eighth resistor; the twenty-ninth end of the main control chip circuit module is connected to the interface circuit module through the eighty-ninth resistor.

2. The electric energy meter electric quantity fault detection circuit according to claim 1 is characterized in that: The main control chip circuit module also includes a first peripheral circuit; the first peripheral circuit includes: a sixth crystal oscillator, a 127th capacitor and a 128th capacitor, wherein: The second end of the main control chip circuit module is connected to the first end of the sixth crystal oscillator and the first end of the one-hundred-and-twenty-seventh capacitor; the second end of the sixth crystal oscillator is connected to the first end of the one-hundred-and-twenty-eighth capacitor and the third end of the main control chip circuit module; the second end of the one-hundred-and-twenty-seventh capacitor is connected to ground; the second end of the one-hundred-and-twenty-eighth capacitor is connected to ground.

3. The electric energy meter electric quantity fault detection circuit according to claim 2 is characterized in that: The main control chip circuit module also includes a second peripheral circuit; the second peripheral circuit includes: a seventy-ninth resistor, a first switch and a one hundred and twenty-fourth capacitor, wherein, The fifth and sixth ends of the main control chip circuit module are connected to the first power supply and the first end of the seventy-ninth resistor; the second end of the seventy-ninth resistor is connected to the tenth end of the main control chip circuit module, the second end of the first switch and the first end of the one-hundred-and-twenty-fourth capacitor; the first end of the first switch is connected to the ground and the second end of the one-hundred-and-twenty-fourth capacitor.

4. The electric energy meter electric quantity fault detection circuit according to claim 3 is characterized in that: The main control chip circuit module includes a third peripheral circuit; the third peripheral circuit includes: a fifth crystal oscillator, a 125th capacitor and a 126th capacitor, wherein: The eighth end of the main control chip circuit module is connected to the first end of the fifth crystal oscillator and the first end of the one-hundred-and-twenty-sixth capacitor; the second end of the fifth crystal oscillator is connected to the ninth end of the main control chip circuit module and the first end of the one-hundred-and-twenty-fifth capacitor; the first test end and the second test end of the fifth crystal oscillator are grounded; the second end of the one-hundred-and-twenty-sixth capacitor is connected to the ground; the second end of the one-hundred-and-twenty-fifth capacitor is connected to the ground.

5. The electric energy meter electric quantity fault detection circuit according to claim 4 is characterized in that: The MCU filter capacitor circuit module includes a 146th capacitor and a 145th capacitor, wherein: The first end of the 146th capacitor is connected to the first power supply; the second end of the 146th capacitor is connected to the ground; the first end of the 145th capacitor is connected to the first power supply; the second end of the 145th capacitor is connected to the ground.

6. The electric energy meter electric quantity fault detection circuit according to claim 5, characterized in that: The LED indicator light circuit module includes a seventy-eighth resistor, a sixth resistor and a third LED, wherein: The first end of the seventy-eighth resistor is connected to the first power supply; the second end of the seventy-eighth resistor is connected to the first end of the third LED; the first end of the sixth resistor is connected to the first power supply; the second end of the sixth resistor is connected to the second end of the third LED; the third end of the third LED is connected to the first LED pin; and the fourth end of the third LED is connected to the second LED pin.

7. The electric energy meter electric quantity fault detection circuit according to claim 6, characterized in that: The interface circuit module includes an interface circuit with a preamplifier module, wherein: The first end of the interface circuit with the preamplifier module is connected to the second power supply; the second end of the interface circuit with the preamplifier module is connected to the twelfth end ADCLK of the main control chip circuit module; the third end and the fifth end of the interface circuit with the preamplifier module are connected to the ground; the fourth end of the interface circuit with the preamplifier module is connected to the thirteenth end ADDIN of the main control chip circuit module through the resistor sixty-two; the sixth end of the interface circuit with the preamplifier module is connected to the seventeenth end ADDOUT of the main control chip circuit module; the seventh end of the interface circuit with the preamplifier module is connected to the eleventh end ADDRDY of the main control chip circuit module; the eighth end of the interface circuit with the preamplifier module is connected to the fifteenth end ADCS of the main control chip circuit module.

8. The electric energy meter electric quantity fault detection circuit according to claim 7, characterized in that: The interface circuit module includes an interface circuit with a coprocessor, wherein: The first and second ends of the coprocessor interface circuit are connected to a first power supply; the third and fifth ends of the coprocessor interface circuit are connected to ground; the sixth end of the coprocessor interface circuit is connected to the thirty-second end RXD of the main control chip circuit module through resistor eighty-eight; the seventh end of the coprocessor interface circuit is connected to the twenty-ninth end TXD of the main control chip circuit module through resistor eighty-ninth; the tenth end of the coprocessor interface circuit is connected to LED3; the eleventh end of the coprocessor interface circuit is connected to LED4; and the twelfth end of the coprocessor interface circuit is connected to ground.

9. The electric energy meter electric quantity fault detection circuit according to claim 8, characterized in that: The interface circuit module includes a Type-C interface circuit module; The Type-C interface circuit module includes: an A1 terminal, an A4 terminal, an A5 terminal, an A6 terminal, an A7 terminal, an A9 terminal, an A12 terminal, a B1 terminal, a B4 terminal, a B5 terminal, a B6 terminal, a B7 terminal, a B9 terminal, a B12 terminal and an EP terminal, wherein: The A1, A12, B1 and B12 terminals of the Type-C interface circuit module are all connected to ground; the A4, A9, B4 and B9 terminals of the Type-C interface circuit module are all connected to VBUS; the A6 and B6 terminals of the Type-C interface circuit module are connected to UD+; the A7 and B7 terminals of the Type-C interface circuit module are connected to UD-; the A5 terminal of the Type-C interface circuit module is connected to the first end of the sixty-ninth resistor; the second end of the sixty-ninth resistor is connected to ground; the B5 terminal of the Type-C interface circuit module is connected to the first end of the sixty-eighth resistor; the second end of the sixty-eighth resistor is connected to ground; the EP terminal of the Type-C interface circuit module is connected to ground.

10. An electric energy meter electric quantity fault detection device, characterized in that: The electric energy meter electrical quantity fault detection device comprises a circuit board and an electric energy meter electrical quantity fault detection circuit as described in any one of claims 1 to 9, and the electric energy meter electrical quantity fault detection circuit is arranged on the circuit board.

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