High-frequency pulse current sensor integrated verification device and verification method

Abstract

The invention relates to a high-frequency pulse current sensor integrated verification device and method, and the device comprises a signal transmission loop module, a pulse signal generation module, a high-frequency pulse current sensor output signal detection module, and a computer and control program module, which form a verification circuit. The method is simple in operation, and can automatically complete the verification of the high-frequency pulse current sensor. In the high-frequency pulse current sensor verification work, the high-frequency pulse current sensor is placed in the high-frequency pulse current sensor integrated verification device, the transmission impedance of the sensor can be automatically tested, the test result can be output, and the problem that errors are generated by manual operation is effectively avoided. Meanwhile, compared with a traditional verification method, a verification platform does not need to be built repeatedly, parameters do not need to be adjusted frequently, and the efficiency of verification work can be effectively improved.

Description

Technical Field

[0001] This invention relates to the field of high-frequency pulse current sensor calibration technology, specifically to an integrated calibration device and calibration method for high-frequency pulse current sensors. Background Technology

[0002] Sensors are the most fundamental components in testing and measurement systems, and their performance directly affects the accurate acquisition of the measured signal. In cable partial discharge detection, the performance of the sensor directly impacts the accuracy of the partial discharge detection results. According to section 6.4.1 of the "Technical Specification for Live-Line Testing Instruments for Power Equipment Part 5: High-Frequency Partial Discharge Detectors," the minimum transmission impedance of a high-frequency current sensor in the 3MHz-30MHz frequency band should not be less than 8mV / mA. The transmission impedance of the sensor is tested to verify its performance characteristics. For the high-frequency pulse current sensor (HFCT), which is most commonly used in cable high-frequency partial discharge detection, traditional verification methods require building an experimental circuit using a signal generator, oscilloscope, and other materials. The sensor is installed in the experimental circuit, and the signal generator is manually operated to output a pulse signal of a specific frequency. The oscilloscope receives the signal acquired by the sensor, thereby detecting the transmission impedance of the high-frequency pulse current sensor (HFCT) in each frequency band. This method has certain limitations: firstly, both the output of the pulse signal and the reading of the oscilloscope require manual operation, which can easily introduce errors in data reading. Secondly, traditional calibration methods require adjusting the input pulse signal within different frequency bands and reading the oscilloscope output value before calculating the transmission impedance. This is inefficient and cannot meet the need to calibrate a large number of sensors in a short time. Thirdly, each sensor calibration requires preparing the necessary instruments and materials and setting up an experimental circuit, which is time-consuming, labor-intensive, and prone to errors due to improper wiring.

[0003] To address the above technical problems, this invention proposes an integrated calibration device and calibration method for a high-frequency pulse current sensor. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies and provide an integrated calibration device and method for high-frequency pulse current sensors. This method is simple to operate and can automatically complete the calibration of high-frequency pulse current sensors. In the calibration process, the high-frequency pulse current sensor is placed in the integrated calibration device, which automatically tests the sensor's transmission impedance and outputs the test results, effectively avoiding errors caused by manual operation. Furthermore, compared to traditional calibration methods, it eliminates the need for repeatedly building a calibration platform and frequently adjusting parameters, thus significantly improving the efficiency of the calibration process.

[0005] The technical problem solved by this invention is achieved through the following technical solution: A high-frequency pulse current sensor integrated calibration device includes a signal transmission circuit module, a pulse signal generation module, a high-frequency pulse current sensor output signal detection module, and a computer and control program module, forming a calibration circuit; The signal transmission circuit includes radio frequency cable 1, radio frequency cable 2, radio frequency cable 3, radio frequency cable 4 and a resistor, which are used to connect the pulse signal generation module, the high-frequency pulse current sensor output signal detection module and the sensor under test to realize signal transmission. The pulse signal generation module includes a programmable signal generator for generating pulse current signals and outputting a sinusoidal current signal with a peak-to-peak value of 20mA in the range of 1MHz to 50MHz. The high-frequency pulse current sensor output signal detection module includes a programmable high-speed acquisition card, used to detect the voltage signal across the sensor under test and the resistor. The computer and control program module includes an integrated computer, which contains a touch-sensitive operating screen and running status indicator lights. The screen displays the operating status of the pulse signal generation module, the high-frequency pulse current sensor output signal detection module, the computer and control program module, and the signal transmission circuit module. Based on the settings on the operating screen, the control program controls the pulse signal generation module to automatically output pulse signals and controls the high-frequency pulse current sensor output signal detection module to automatically detect signals. The integrated calibration device for the high-frequency pulse current sensor has a cuboid structure. The computer and control program, the sensor under test and the RF cable 1 are located in the operation panel area, while the RF cable 2, RF cable 3, RF cable 4, resistor, pulse signal generation module and high-frequency pulse current sensor output signal detection module of the signal transmission circuit are located in the internal packaging area.

[0006] Furthermore, the technical parameters of the programmable signal generator of the pulse signal generation module are: sine wave range of 1MHz to 80MHz, frequency error of 2ppm; the technical parameters of the programmable high-speed acquisition card of the high-frequency pulse current sensor output signal detection module are: sampling rate of not less than 1GS / s, 100MHz bandwidth; resistance R0 is 50Ω. The signal output method of the pulse signal generation module and the signal acquisition method of the high-frequency pulse current sensor output signal detection module are designed. The pulse signal generation module is set to output a frequency-adjustable voltage. A sinusoidal current signal with a peak-to-peak value of 20mA is output in the test circuit. The frequency is adjusted in 1MHz steps within the range of 1MHz to 50MHz, and each frequency band is held for 10s. The two channels CH1 and CH2 of the high-frequency pulse current sensor output signal detection module automatically measure the peak output voltage V2(f) of the tested high-frequency pulse current sensor and the peak voltage V1(f) across resistor R0 at different frequencies f. The transmission impedance value at each frequency is calculated according to the formula. ; When the output frequency f in the test circuit is 5MHz and the peak-to-peak value is 20mA, the peak voltage V1(5) across resistor R0 is 1V. If V2(5)≥0.16V, then Z(5)≥8mV / mA.

[0007] Furthermore, the pulse signal generation module is in automatic mode. By programming, the signal output and signal acquisition modes are defined. The automatic pulse signal output program implementation steps are as follows: Step 1: Check the hardware connection status of the programmable signal generator and verify the availability of the communication interface; Step 2: Obtain the front-end signal setting information, load the initial information, the pulse type is sine wave, the peak-to-peak value is 20mA, the frequency range is 1MHz to 50MHz, the adjustment step size is 1MHz, and the duration of each frequency point is 10s, to complete the configuration and generation of the initial pulse signal; Step 3: Start outputting a signal and detect the frequency value of the current output signal. Continue to perform the following cyclic judgment and operation: If the current frequency is less than the termination frequency, the control signal will continue to output at that frequency point and display the current frequency on the front operation screen. After the continuous output duration reaches the preset duration, the output frequency will be increased to the next frequency point by step. If the current frequency is equal to the termination frequency, the control signal will continue to output at that frequency point for the preset duration and then trigger a stop operation command. Step 4: Respond to the stop command, stop signal output, and keep the front-end displayed data unchanged.

[0008] Furthermore, the high-frequency pulse current sensor output signal detection module is in automatic mode. By programming, the signal output and signal acquisition modes are defined. The automatic detection program implementation steps are as follows: Step 1: Initialize the system, configure the acquisition parameters, the sampling rate is 0.8GS / s, the sampling duration is 8 seconds, and the two channels CH1 and CH2 are set. The voltage across the resistor is connected to the CH1 channel, and the sensor under test is connected to the CH2 channel. Step 2: Start the programmable high-speed acquisition card, acquire voltage signals from two channels CH1 and CH2, detect the two channels CH1 and CH2, and perform the following loop judgment and operation: If the current voltage value acquired in both channels CH1 and CH2 is different from the previous acquired value, the acquired data is considered valid and enters the data processing program; if the current voltage value acquired in both channels is empty, the acquisition stops. Step 3: When valid data is acquired, the data of the two channels CH1 and CH2 signal channels are preprocessed, including filtering and noise reduction, peak detection, to obtain the maximum voltage values ​​of the two channels CH1 and CH2 signal channels. The current transmission impedance value is calculated according to the formula and output to the front-end operation screen.

[0009] Step 4: Keep the data displayed on the front-end operation screen unchanged, turn off the programmable high-speed acquisition card, and complete the acquisition.

[0010] A verification method for an integrated verification device for a high-frequency pulse current sensor, comprising the following verification steps: Step 1: Connect the power supply and turn on the high-frequency pulse current sensor integrated calibration device. According to the operation status indicator lights, confirm that the pulse signal generation module, high-frequency pulse current sensor output signal detection module, computer and control program module and signal transmission circuit module are started normally. A green operation status indicator light indicates that each module is started normally, and a red operation status indicator light indicates that each module is not started normally. Step 2: Insert the sensor to be tested into the calibration circuit, and connect the output port of the sensor to the port of the programmable high-speed acquisition card using a 1m long coaxial cable with an impedance of 50Ω. Step 3: Open the control program, set the signal output, set the output to a sinusoidal current signal with a peak-to-peak value of 20mA, and the peak-to-peak value range of 10mA-30mA. Adjust the frequency in 1MHz steps within the range of 1MHz to 50MHz, and hold each frequency band for 10s. The high-speed acquisition card will automatically detect the output voltage value of the sensor under test. Step 4: The high-frequency pulse current sensor output signal detection module outputs the transmission impedance values ​​in each frequency band and automatically determines whether the sensor is qualified based on the set judgment standard of 8mV / mA.

[0011] The advantages and positive effects of this invention are: 1. The integrated calibration device and method for high-frequency pulse current sensors of this invention solves the problems of low efficiency and insufficient accuracy of manual parameter adjustment and value reading in traditional high-frequency pulse current sensor calibration. It realizes efficient and accurate calibration of high-frequency pulse current sensors, allows for customization of sensor calibration parameters and setting of calibration pass values, and enables automatic judgment of sensor calibration results.

[0012] 2. The integrated calibration device and method for high-frequency pulse current sensors of this invention are simple to operate and can automatically complete the calibration of high-frequency pulse current sensors. In the calibration process, the high-frequency pulse current sensor is placed in the integrated calibration device, which automatically tests the sensor's transmission impedance and outputs the test results, effectively avoiding errors caused by manual operation. Furthermore, compared to traditional calibration methods, it eliminates the need for repeatedly building a calibration platform and frequently adjusting parameters, thus significantly improving the efficiency of the calibration process. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the operation panel area of ​​the integrated calibration device for high-frequency pulse current sensors of the present invention. Figure 2 This is a layout diagram of the signal transmission circuit module, pulse signal generation module, high-frequency pulse current sensor output signal detection module, and computer and control program module of the integrated calibration device for high-frequency pulse current sensor of the present invention. Figure 3 The circuit diagram of the sensor under test formed by the signal transmission circuit module, pulse signal generation module, high-frequency pulse current sensor output signal detection module, and computer and control program module of the integrated high-frequency pulse current sensor calibration device of the present invention is shown. Detailed Implementation

[0014] The present invention will be further described in detail below through specific embodiments. The following embodiments are merely descriptive and not limiting, and should not be used to limit the scope of protection of the present invention.

[0015] like Figures 1 to 2 As shown, an integrated calibration device for a high-frequency pulse current sensor includes a signal transmission circuit module, a pulse signal generation module, a high-frequency pulse current sensor output signal detection module, and a computer and control program module, forming a calibration circuit.

[0016] The signal transmission circuit includes RF cable 1, RF cable 2, RF cable 3, RF cable 4 and a resistor, which are used to connect the pulse signal generation module, the high-frequency pulse current sensor output signal detection module and the sensor under test to realize signal transmission.

[0017] The pulse signal generation module includes a programmable signal generator for generating pulse current signals, outputting a sinusoidal current signal with a peak-to-peak value of 20mA in the range of 1MHz to 50MHz. The technical parameters of the programmable signal generator in the pulse signal generation module are: sinusoidal wave range of 1MHz to 80MHz, frequency error of 2ppm. The technical parameters of the programmable high-speed acquisition card of the high-frequency pulse current sensor output signal detection module are: sampling rate of not less than 1GS / s, 100MHz bandwidth, and resistance R0 of 50Ω.

[0018] According to the programming manual, the signal output mode of the pulse signal generation module and the signal acquisition mode of the high-frequency pulse current sensor output signal detection module are programmed. The pulse signal generation module is set to output a frequency-adjustable voltage, generating a sinusoidal current signal with a peak-to-peak value of 20mA in the test circuit. The frequency is adjusted in 1MHz steps within the range of 1MHz to 50MHz, with each frequency band held for 10s. The two channels CH1 and CH2 of the high-frequency pulse current sensor output signal detection module automatically measure the peak output voltage V2(f) of the tested high-frequency pulse current sensor (HFCT) and the peak voltage V1(f) across resistor R0 at different frequencies f. The transmission impedance value at each frequency is calculated using the formula. ; When the output frequency f in the test circuit is 5MHz and the peak-to-peak value is 20mA, the peak voltage V1(5) across resistor R0 is 1V. If V2(5)≥0.16V, then Z(5)≥8mV / mA.

[0019] The high-frequency pulse current sensor output signal detection module includes a programmable high-speed acquisition card, used to detect the voltage signal across the sensor under test and the resistor.

[0020] The computer and control program module includes an all-in-one computer, which contains a touch screen and running status indicator lights to display the running status of the pulse signal generation module, the high-frequency pulse current sensor output signal detection module, the computer and control program module, and the signal transmission circuit module. According to the front-end settings on the operating screen, the control program controls the pulse signal generation module to automatically output pulse signals and controls the high-frequency pulse current sensor output signal detection module to automatically detect signals. The integrated calibration device for high-frequency pulse current sensors has a cuboid structure. The computer and control program, the sensor under test and RF cable 1 are located in the operation panel area, while the RF cables 2, 3, and 4 of the signal transmission circuit, the resistor, the pulse signal generation module and the high-frequency pulse current sensor output signal detection module are located in the internal packaging area.

[0021] like Figure 3 As shown, US This is the pulse signal generation module; R0 is a resistor; M1 is the high-frequency pulse current sensor output signal detection module; HFCT is the sensor under test. Pulse signal generation module U S The signal transmission loop module is connected to RF cable 1, RF cable 2, and resistor R0 to form a detection loop. The sensor under test (HFCT) is mounted on RF cable 1, and the pulse signal generation module U... S The output pulse current signal is converted into a voltage signal and simultaneously transmitted, along with the voltage signal across resistor R0, via RF cables 3 and 4 to the two channels CH1 and CH2 of the high-frequency pulse current sensor output signal detection module M1. The high-frequency pulse current sensor output signal detection module M1 takes the peak value of the voltage signal output by the sensor under test (HFCT) as V2(f) and the peak value of the voltage signal across resistor R0 as V1(f). The computer and control module are connected to the pulse signal generation module U via signal transmission lines. S It is connected to the high-frequency pulse current sensor output signal detection module M1 to realize automatic output and automatic signal detection functions.

[0022] The pulse signal generation module is in automatic mode. By programming, the signal output and signal acquisition modes are defined. The steps for implementing the automatic pulse signal output program are as follows: Step 1: Check the hardware connection status of the programmable signal generator and verify the availability of the communication interface; Step 2: Obtain the front-end signal setting information, load the initial information, the pulse type is sine wave, the peak-to-peak value is 20mA, the frequency range (starting frequency 1MHz, ending frequency 50MHz), the adjustment step size is 1MHz, and the duration of each frequency point is 10s, to complete the configuration and generation of the initial pulse signal; Step 3: Start outputting a signal and monitor the frequency value of the current output signal in real time. Continuously perform the following cyclic judgment and operation: If the current frequency is less than the termination frequency, the control signal continues to output at that frequency point and displays the current frequency on the front operation screen. After the continuous output duration reaches the preset duration, the output frequency is incremented to the next frequency point by step. If the current frequency is equal to the termination frequency, the control signal continues to output at that frequency point for the preset duration and then triggers a stop operation command. Step 4: Respond to the stop command, stop signal output, and keep the front-end displayed data unchanged.

[0023] The high-frequency pulse current sensor output signal detection module is in automatic mode. The automatic detection program, which defines the signal output and acquisition modes through programming, implements the following steps: Step 1: Initialize the system, configure the acquisition parameters, determine the necessary parameters, the sampling rate is 0.8GS / s, the sampling duration is 8 seconds, and the two channels CH1 and CH2 are set (the voltage across the resistor is connected to the CH1 channel, and the sensor under test is connected to the CH2 channel). Step 2: Start the programmable high-speed acquisition card and simultaneously acquire voltage signals from two channels, CH1 and CH2. Monitor the two channels CH1 and CH2 in real time and perform the following cyclic judgment and operation: If the current voltage value acquired in both channels CH1 and CH2 is different from the previous acquired value, the acquired data is considered valid and enters the data processing program; if the current voltage value acquired in both channels is empty, the acquisition stops.

[0024] Step 3: When valid data is acquired, the data of the two channels CH1 and CH2 signal channels are preprocessed, including filtering and noise reduction, peak detection, to obtain the maximum voltage values ​​of the two channels CH1 and CH2 signal channels. The current transmission impedance value is calculated according to the formula and output to the front-end operation screen.

[0025] Step 4: Keep the data displayed on the front-end operation screen unchanged, turn off the programmable high-speed acquisition card, and complete the acquisition.

[0026] A verification method for an integrated verification device for a high-frequency pulse current sensor, comprising the following verification steps: Step 1: Connect the power supply and turn on the high-frequency pulse current sensor integrated calibration device. According to the operation status indicator lights, confirm that the pulse signal generation module, high-frequency pulse current sensor output signal detection module, computer and control program module and signal transmission circuit module are started normally. A green operation status indicator light indicates that each module is started normally, and a red operation status indicator light indicates that each module is not started normally. Step 2: Insert the sensor to be tested into the calibration circuit, and connect the output port of the sensor to the port of the programmable high-speed acquisition card using a 1m long coaxial cable with an impedance of 50Ω. Step 3: Open the control program, set the signal output, set the output to a sinusoidal current signal with a peak-to-peak value of 20mA, and the peak-to-peak value range of 10mA-30mA. Adjust the frequency in 1MHz steps within the range of 1MHz to 50MHz, and hold each frequency band for 10s. The high-speed acquisition card will automatically detect the output voltage value of the sensor under test. Step 4: The high-frequency pulse current sensor output signal detection module outputs the transmission impedance values ​​in each frequency band and automatically determines whether the sensor is qualified based on the set judgment standard of 8mV / mA.

[0027] This invention, a high-frequency pulse current sensor integrated calibration device and method, solves the problems of low efficiency and insufficient accuracy associated with traditional high-frequency pulse current sensor calibration involving manual parameter adjustment and numerical reading. It achieves efficient and accurate calibration of high-frequency pulse current sensors, allowing for customized sensor calibration parameters and the setting of calibration pass values, and enabling automatic judgment of sensor calibration results. The calibration method is simple to operate and can automatically complete the calibration of high-frequency pulse current sensors. During the calibration process, the high-frequency pulse current sensor is placed in the integrated calibration device, which automatically tests the sensor's transmission impedance and outputs the test results, effectively avoiding errors caused by manual operation. Furthermore, compared to traditional calibration methods, it eliminates the need for repeatedly building a calibration platform and frequent parameter adjustments, significantly improving the efficiency of the calibration work.

[0028] Although embodiments and drawings of the present invention have been disclosed for illustrative purposes, those skilled in the art will understand that various substitutions, variations and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. A high frequency pulsed current sensor integrated calibration device, characterized by: The verification circuit comprises a signal transmission loop module, a pulse signal generation module, a high-frequency pulse current sensor output signal detection module and a computer and control program module; The signal transmission loop comprises a radio frequency cable 1, a radio frequency cable 2, a radio frequency cable 3, a radio frequency cable 4 and a resistor, which are used to connect the pulse signal generation module, the high-frequency pulse current sensor output signal detection module and the sensor to be tested, and realize signal transmission; The pulse signal generation module comprises a programmable signal generator, which is used to generate a pulse current signal and output a sine current signal with a peak-to-peak value of 20 mA in a range of 1 MHz to 50 MHz; The high-frequency pulse current sensor output signal detection module comprises a programmable high-speed acquisition card, which is used to detect the voltage signal between the sensor to be tested and the resistor; The computer and control program module comprises an integrated computer, which comprises a touchable operation screen and a running state indicator, and is used to display the running states of the pulse signal generation module, the high-frequency pulse current sensor output signal detection module, the computer and control program module and the signal transmission loop module, and automatically output pulse signals by the pulse signal generation module and automatically detect signals by the high-frequency pulse current sensor output signal detection module according to the front-end settings on the operation screen; The high-frequency pulse current sensor integrated verification device has a cuboid structure, the computer and control program, the sensor to be tested and the radio frequency cable 1 are located in the operation panel area, and the radio frequency cable 2, the radio frequency cable 3, the radio frequency cable 4, the resistor, the pulse signal generation module and the high-frequency pulse current sensor output signal detection module of the signal transmission loop are located in the internal packaging area.

2. The high frequency pulsed current sensor integrated calibrator of claim 1, wherein: The technical parameters of the programmable signal generator of the pulse signal generation module are as follows: the sine wave range is 1 MHz to 80 MHz, and the frequency error is 2 ppm; the technical parameters of the programmable high-speed acquisition card of the high-frequency pulse current sensor output signal detection module are as follows: the sampling rate is not less than 1 GS / s, and the 100 MHz bandwidth; the resistance R0 is 50 Ω; The pulse signal generation module signal output mode and the high-frequency pulse current sensor output signal detection module signal acquisition mode are programmed; the pulse signal generation module output frequency adjustable voltage is set, the sine current signal with a peak-to-peak value of 20 mA is output in the test loop, the frequency is adjusted in a range of 1 MHz to 50 MHz with a step of 1 MHz, each frequency band is kept for 10 s, the high-frequency pulse current sensor output signal detection module two channels CH1 channel and CH2 channel automatically measure the output voltage peak value V2(f) of the detected high-frequency pulse current sensor and the voltage peak value V1(f) between the resistance R0 at different frequencies f, and the transmission impedance value at each frequency is calculated according to the formula: ； When the output frequency f in the test loop is 5 MHz, the sine current signal with a peak-to-peak value of 20 mA, the voltage peak value V1(5) between the resistance R0 is 1 V, if V2(5)≥0.16 V, then Z(5)≥8 mV / mA.

3. The high frequency pulsed current sensor integrated calibrator of claim 2, wherein: The pulse signal generation module is in an automatic mode, a signal output and signal collection mode is formulated through programming, and the automatic output program of the pulse signal is implemented in the following steps: Step 1, check the hardware connection state of the programmable signal generator, and verify the availability of the communication interface; Step 2, obtain the front-end signal setting information, load the initial information, the pulse type is a sine wave, the peak-to-peak value is 20 mA, the frequency range is 1 MHz to 50 MHz, the adjustment step is 1 MHz, and the duration of each frequency point is 10 s, and the initial pulse signal is configured and generated; Step 3, start outputting the signal, detect the frequency value of the current output signal, and continuously perform the following loop judgment and operation: if the current frequency is less than the termination frequency, the control signal is continuously output at the frequency point, and the current frequency is displayed on the front-end operation screen; the output frequency is increased to the next frequency point by the step after the duration reaches the preset duration; if the current frequency is equal to the termination frequency, the control signal is continuously output at the frequency point until the preset duration, and a stop running command is triggered; Step 4, in response to the stop running command, stop the signal output, and keep the front-end display data unchanged.

4. The high frequency pulsed current sensor integrated calibrator of claim 2, wherein: The high-frequency pulse current sensor output signal detection module is in an automatic mode, a signal output and signal collection mode is formulated through programming, and the automatic detection program is implemented in the following steps: Step 1, initialize the system, configure the collection parameters, the sampling rate is 0.8 GS / s, the sampling duration is 8 seconds, two channels CH1 channel and CH2 channel are set, the resistance voltage is connected to the CH1 channel, and the sensor to be measured is connected to the CH2 channel; Step 2, start the programmable high-speed acquisition card, collect voltage signals from the two channels CH1 channel and CH2 channel, detect the two channels CH1 channel and CH2 signal channel, and perform the following loop judgment and operation; if the current values of the collected voltages in the two channels CH1 channel and CH2 signal channel are different from the values collected last time, it is considered that the collected data is valid and enters the data processing program; if the current values of the collected voltages in the two channels are both null, stop collecting; Step 3, when valid data is collected, first preprocess the data of the two channels CH1 channel and CH2 signal channel, including filtering and denoising processing, peak detection, obtaining the maximum voltage values of the two channels CH1 channel and CH2 signal channel, calculating the current transmission impedance value according to the formula, and outputting to the front-end operation screen; Step 4, keep the front-end operation screen display data unchanged, close the programmable high-speed acquisition card, and complete the collection.

5. A calibration method of the high-frequency pulsed current sensor integrated calibration device according to claim 1, characterized by: The verification steps are as follows: Step 1, connect the power supply, turn on the high-frequency pulse current sensor integrated verification device, and confirm that the pulse signal generation module, the high-frequency pulse current sensor output signal detection module, the computer and the control program module, and the signal transmission loop module are normally started according to the running state indicator light, the running state indicator light is green indicating that each module is normally started, and the running state indicator light is red indicating that each module is not normally started; Step 2, the sensor to be tested is clamped in the verification circuit, and the output port of the sensor to be tested is connected with the port of the programmable high-speed acquisition card by using a 1m long coaxial cable with an impedance of 50Ω; Step 3, the control program is opened, the signal output is set, the sine current signal with a peak-peak value of 20mA is set, the peak-peak value range is 10mA-30mA, the frequency is adjusted in 1MHz steps in the range of 1MHz to 50MHz, each frequency band is kept for 10s, and the high-speed acquisition card automatically detects the output voltage value of the measured sensor; Step 4, the output signal detection module of the high-frequency pulse current sensor outputs the transmission impedance value under each frequency band, and automatically judges whether the sensor is qualified according to the set judgment standard of 8mV / mA.

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