阅读说明：本技术 引信静电放电模块电流校准系统及方法 (Fuse electrostatic discharge module current calibration system and method ) 是由 胡小锋 王雷 魏明 周帅 于 2020-12-01 设计创作，主要内容包括：本发明公开了一种引信静电放电模块电流校准系统及方法,所述系统包括静电放电模拟器,所述静电放电模拟器的静电信号输出端与引信静电放电模块的一端连接,所述引信静电放电模块的另一端为静电电流输出端,所述静电电流输出端与电流传感器的信号输入端,所述电流传感器的信号输出端与衰减器的信号输入端连接,所述衰减器的信号输出端经连接电缆与示波器的信号输入端连接。本发明所述系统和方法具有普遍性的特点,可按照本方法组建引信静电放电装置,并利用本方法提供的电流波形参数校准引信静电放电模块。(The invention discloses a fuse electrostatic discharge module current calibration system and a fuse electrostatic discharge module current calibration method, wherein the system comprises an electrostatic discharge simulator, an electrostatic signal output end of the electrostatic discharge simulator is connected with one end of the fuse electrostatic discharge module, the other end of the fuse electrostatic discharge module is an electrostatic current output end, the electrostatic current output end is connected with a signal input end of a current sensor, a signal output end of the current sensor is connected with a signal input end of an attenuator, and a signal output end of the attenuator is connected with a signal input end of an oscilloscope through a connecting cable. The system and the method have the characteristic of universality, a fuse electrostatic discharge device can be built according to the method, and the current waveform parameters provided by the method are utilized to calibrate the fuse electrostatic discharge module.)

1. A fuse electrostatic discharge module current calibration system is characterized in that: the electrostatic discharge simulator comprises an electrostatic discharge simulator, wherein an electrostatic signal output end of the electrostatic discharge simulator is connected with one end of a fuse electrostatic discharge module, the other end of the fuse electrostatic discharge module is an electrostatic current output end, the electrostatic current output end is connected with a signal input end of a current sensor, a signal output end of the current sensor is connected with a signal input end of an attenuator, and a signal output end of the attenuator is connected with a signal input end of an oscilloscope through a connecting cable.

2. The fuze electrostatic discharge module current calibration system of claim 1, wherein: the electrostatic discharge simulator uses a Noiseken ESS-S3011A type electrostatic discharge simulator.

3. The fuze electrostatic discharge module current calibration system of claim 1, wherein: the fuse electrostatic discharge module comprises two groups of resistance-capacitance modules of 500pF-500 omega and 500pF-5000 omega.

4. The fuze electrostatic discharge module current calibration system of claim 1, wherein: the current sensor, the attenuator, the connecting cable and the oscilloscope are positioned in the Faraday cage.

5. The fuze electrostatic discharge module current calibration system of claim 1, wherein: the bandwidth of the current sensor is 1GHz, the sampling resistor R is 2 omega, the current sensor is formed by connecting 25 51 omega resistors in parallel, the resistors are 1/4W metal film non-inductive resistors, the upper limit of the working frequency of the current sensor is ensured to reach 1GHz, and the current sensor is welded on a cylindrical output side disc with the radius R of 14.5mm according to requirements and is annularly and symmetrically arranged; the matching resistor is 48 omega, comprises 5 resistors of 240 omega and 1/4W, and is welded on an output connector of the N-type coaxial structure in a pentagonal arrangement mode to serve as an output end of the current probe.

6. The fuze electrostatic discharge module current calibration system of claim 1, wherein: the attenuator uses a 20dB coaxial attenuator and has the bandwidth of 1 GHz.

7. The fuze electrostatic discharge module current calibration system of claim 1, wherein: the oscilloscope is a 7404B type oscilloscope of Tak, the using bandwidth is 4GHz, and the using frequency is 20G/s.

8. A fuze electrostatic discharge module current calibration method using the calibration system of any of claims 1-7, characterized by comprising the steps of:

connecting the electrostatic discharge simulator with the fuse electrostatic discharge module to construct a fuse electrostatic discharge system;

connecting a current sensor, an attenuator, a connecting cable and an oscilloscope together to construct a fuze electrostatic discharge current waveform acquisition system, and connecting the fuze electrostatic discharge system and the waveform acquisition system together;

enabling the fuse electrostatic discharge system and the fuse electrostatic discharge current waveform acquisition system to work, performing electrostatic discharge by using the fuse electrostatic discharge system, acquiring electrostatic discharge current by using a current sensor, and transmitting the electrostatic discharge current to an oscilloscope by using an attenuator to finish the acquisition of electrostatic discharge current waveforms;

and correcting the discharge current of the electrostatic discharge module of the fuse to be tested according to the waveform acquired by the oscilloscope and the standard value of the electrostatic discharge module of the fuse to be tested.

9. The fuze electrostatic discharge module current calibration method of claim 8, wherein: the current sensor, the attenuator, the connecting cable and the oscilloscope are positioned in the Faraday cage.

10. The fuze electrostatic discharge module current calibration method of claim 8, wherein: during testing, test current of discharging the resistor with +25kV to 500 omega, test current of discharging the resistor with-25 kV to 500 omega, test current of discharging the resistor with +25kV to 5000 omega and test current of discharging the resistor with-25 kV to 5000 omega are respectively obtained.

Technical Field

The invention relates to the technical field of electrostatic discharge measurement methods, in particular to a fuse electrostatic discharge module current calibration system and method.

Background

The fuze is a control device for ensuring the safety of ammunition at ordinary times and in launching and effectively exerting the destruction efficiency of a weapon system in wartime, is a core component of the ammunition system, is widely arranged on various military weapons of land, sea, air and two cannons, and the equipment quantity is increased year by year. As the radio fuse with the largest number of equipment (the radio fuse accounts for 52 percent in the proximity fuse), the fuse failure rate is greatly improved due to the complexity of the electromagnetic environment of the modern battlefield and the gradual deterioration of the electromagnetic environment at ordinary times, and the exertion of the destruction efficiency of a weapon system is limited. In order to ensure the safety and reliability of the fuse in the whole life process, the general equipment department of national people's liberation force in 1 month and 1 day 1999 approves and implements GJB573A-98 ' fuse environment and performance test method ', which is used as the basis of all fuse environment and performance tests.

In this standard, the method 601 electrostatic discharge test is a test conducted in a laboratory to simulate the fuse to be subjected to a high voltage discharge condition, and the purpose is to examine the safety and operational reliability of the fuse when the fuse is subjected to the high voltage electrostatic discharge (except for a lightning environment) during handling and transportation by performing the high voltage electrostatic discharge of a pre-selected discharge point on the fuse in a safe state. In the standard, the electrostatic discharge waveform curve can be measured by a high-voltage or current probe, but the standard does not give a current waveform, and does not give specific parameter indexes.

Disclosure of Invention

The technical problem to be solved by the invention is how to provide a fuse electrostatic discharge module current calibration system which is simple in structure and can ensure accuracy and repeatability.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a fuse electrostatic discharge module current calibration system is characterized in that: the electrostatic discharge simulator comprises an electrostatic discharge simulator, wherein an electrostatic signal output end of the electrostatic discharge simulator is connected with one end of a fuse electrostatic discharge module, the other end of the fuse electrostatic discharge module is an electrostatic current output end, the electrostatic current output end is connected with a signal input end of a current sensor, a signal output end of the current sensor is connected with a signal input end of an attenuator, and a signal output end of the attenuator is connected with a signal input end of an oscilloscope through a connecting cable.

Preferably, the electrostatic discharge simulator uses a Noiseken ESS-S3011A type electrostatic discharge simulator.

Preferably, the fuse electrostatic discharge module comprises two sets of resistance-capacitance modules of 500pF-500 omega and 500pF-5000 omega.

The further technical scheme is as follows: the current sensor, the attenuator, the connecting cable and the oscilloscope are positioned in the Faraday cage.

The further technical scheme is as follows: the bandwidth of the current sensor is 1GHz, the sampling resistor R is 2 omega, the current sensor is formed by connecting 25 51 omega resistors in parallel, the resistors are 1/4W metal film non-inductive resistors, the upper limit of the working frequency of the current sensor is ensured to reach 1GHz, and the current sensor is welded on a cylindrical output side disc with the radius R of 14.5mm according to requirements and is annularly and symmetrically arranged; the matching resistor is about 48 omega, comprises 5 resistors of 240 omega and 1/4W, and is welded on an output connector of the N-type coaxial structure in a pentagonal arrangement mode to serve as an output end of the current probe.

Preferably: the attenuator uses a 20dB coaxial attenuator and has the bandwidth of 1 GHz.

Preferably: the oscilloscope is a 7404B type oscilloscope of Tak, the bandwidth is 4GHz, and the frequency is 20G/s.

The invention also discloses a fuse electrostatic discharge module current calibration method, which uses the calibration system and is characterized by comprising the following steps:

connecting the electrostatic discharge simulator with the fuse electrostatic discharge module to construct a fuse electrostatic discharge system;

connecting a current sensor, an attenuator, a connecting cable and an oscilloscope together to construct a fuze electrostatic discharge current waveform acquisition system, and connecting the fuze electrostatic discharge system and the waveform acquisition system together;

enabling the fuse electrostatic discharge system and the fuse electrostatic discharge current waveform acquisition system to work, performing electrostatic discharge by using the fuse electrostatic discharge system, acquiring electrostatic discharge current by using a current sensor, and transmitting the electrostatic discharge current to an oscilloscope by using an attenuator to finish the acquisition of electrostatic discharge current waveforms;

and correcting the discharge current of the electrostatic discharge module of the fuse to be tested according to the waveform acquired by the oscilloscope and the standard value of the electrostatic discharge module of the fuse to be tested.

The further technical scheme is as follows: during testing, test current of discharging the resistor with +25kV to 500 omega, test current of discharging the resistor with-25 kV to 500 omega, test current of discharging the resistor with +25kV to 5000 omega and test current of discharging the resistor with-25 kV to 5000 omega are respectively obtained.

Adopt the produced beneficial effect of above-mentioned technical scheme to lie in: the system and the method utilize an electrostatic discharge simulator, and are matched with two groups of resistance-capacitance modules of 500pF-500 omega and 500pF-5000 omega to construct a fuse electrostatic discharge system; sampling by using a current sensor, transmitting the sampled samples to an oscilloscope through an attenuator and a connecting cable, and acquiring the waveform of the electrostatic discharge current; in order to prevent the electromagnetic pulse generated by electrostatic discharge from influencing the test result, the current waveform acquisition system is completely arranged in the Faraday cage; by utilizing the system and the method, a large number of experiments and data analysis are carried out to obtain a current waveform of discharging the resistance of 500 omega under +25kV voltage, a current waveform of discharging the resistance of 500 omega under-25 kV voltage, a current waveform of discharging the resistance of 5000 omega under +25kV voltage, a current waveform of discharging the resistance of 5000 omega under-25 kV voltage and corresponding waveform parameters. The system and the method have the characteristic of universality, a fuse electrostatic discharge device can be built according to the method, and the current waveform parameters provided by the method are utilized to calibrate the fuse electrostatic discharge module.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

FIG. 1 is a functional block diagram of a system according to an embodiment of the present invention;

FIG. 2 is a graph of current waveforms for a +25kV voltage versus a 500 Ω resistor discharge in an embodiment of the present invention;

FIG. 3 is a graph of current waveforms for a discharge of a 500 Ω resistor at a voltage of-25 kV in an embodiment of the present invention;

FIG. 4 is a graph of current waveforms for a +25kV voltage versus 5000 Ω resistance discharge in an embodiment of the present invention;

FIG. 5 is a graph of the current waveform for a 25kV voltage versus 5000 Ω resistance discharge in an example of the invention;

Detailed Description

The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.

As shown in fig. 1, an embodiment of the present invention discloses a fuse electrostatic discharge module current calibration system, which includes an electrostatic discharge simulator, an electrostatic signal output end of the electrostatic discharge simulator is connected to one end of the fuse electrostatic discharge module, the other end of the fuse electrostatic discharge module is an electrostatic current output end, the electrostatic current output end is connected to a signal input end of a current sensor, a signal output end of the current sensor is connected to a signal input end of an attenuator, and a signal output end of the attenuator is connected to a signal input end of an oscilloscope through a connection cable.

The electrostatic discharge simulator can use a Noiseken ESS-S3011A type electrostatic discharge simulator, the output voltage is 0.2 kV-30 kV +/-5%, the setting is divided into two steps, the adjustment step length of 10kV is 0.01kV step length, and the adjustment step length of 30kV is 0.1 kV; the polarity of the output voltage is positive and negative adjustable. The output voltage range of the electrostatic discharge simulator meets the electrostatic discharge voltage of 25kV in a fuse electrostatic discharge test. 500pF-500 omega and 500pF-5000 omega resistance-capacitance modules (fuse electrostatic discharge modules) are selected to complete the fuse electrostatic discharge test.

The fuze electrostatic discharge current waveform acquisition system comprises a current sensor, an attenuator, a connecting cable and an oscilloscope, and is arranged in a Faraday cage. The current sensor, namely the current calibration target, the bandwidth is 1GHz, the sampling resistance R is 2 Ω, and is formed by connecting 25 51 Ω resistors in parallel, 1/4W metal film noninductive resistor is adopted to the resistance, guarantees that the operating frequency upper limit of current sensor reaches 1GHz, and welds on a cylindrical output side disc of radius R14.5 mm as required, is the annular symmetry and arranges. The matching resistor is about 48 omega, consists of 5 resistors of 240 omega and 1/4W which are connected in parallel, and is welded on an output connector of the N-type coaxial structure in a pentagonal arrangement mode to be used as an output end of the current probe. The main body of the current sensor is made of copper by fine machining, and the surface of the current sensor is plated with silver. Assembled and tightly mounted on the faraday cage. The attenuator is a coaxial attenuator with 20dB and the bandwidth is 1 GHz. The oscilloscope uses a Tak's 7404B oscilloscope, with a bandwidth of 4GHz, and with a frequency of 20G/s. The connecting cable is 1m coaxial cable. The volume of the Faraday cage is 1.5m multiplied by 0.6m and is used for preventing electromagnetic pulses generated by electrostatic discharge from influencing the test.

Correspondingly, the application also discloses a fuse electrostatic discharge module current calibration method, the method uses the calibration system, and the method comprises the following steps:

connecting the electrostatic discharge simulator with the fuse electrostatic discharge module to construct a fuse electrostatic discharge system;

connecting a current sensor, an attenuator, a connecting cable and an oscilloscope together to construct a fuze electrostatic discharge current waveform acquisition system, and connecting the fuze electrostatic discharge system and the waveform acquisition system together;

enabling the fuse electrostatic discharge system and the fuse electrostatic discharge current waveform acquisition system to work, performing electrostatic discharge by using the fuse electrostatic discharge system, acquiring electrostatic discharge current by using a current sensor, and transmitting the electrostatic discharge current to an oscilloscope by using an attenuator to finish the acquisition of electrostatic discharge current waveforms;

and correcting the discharge current of the electrostatic discharge module of the fuse to be tested according to the waveform acquired by the oscilloscope and the standard value of the electrostatic discharge module of the fuse to be tested.

The obtained current waveform of the discharge of the resistance of 500 omega under the voltage of +25kV is shown in figure 2, wherein the peak value of the current waveform is 4.95A +/-5 percent; the rise time of the current waveform is 20.17ns +/-5%; the falling time of the current waveform is 403ns +/-5%; the half pulse width of the current waveform is 198.7ns +/-5%; the duration of the current waveform is 599.45ns 5%.

The obtained current waveform of the discharge of the resistance of 500 omega under the voltage of-25 kV is shown in figure 3, and the peak value of the current waveform is-4.94A +/-5 percent; the rise time of the current waveform is 20.08ns +/-5%; the falling time of the current waveform is 399.3ns +/-5%; the half pulse width of the current waveform is 198.9ns +/-5%; the duration of the current waveform is 600.1ns 5%.

The obtained current waveform of the +25kV voltage to 5000 omega resistance discharge is shown in figure 4, and the peak value of the current waveform is 0.484A +/-5%; the rise time of the current waveform is 21.80ns +/-5%; the falling time of the current waveform is 4416.4ns +/-5%; the half pulse width of the current waveform is 1429ns ± 5%; the duration of the current waveform is 5517.5ns 5%.

The obtained current waveform of-25 kV voltage to 5000 omega resistance discharge is shown in figure 5, and the peak value of the current waveform is-0.476A +/-5%; the rise time of the current waveform is 22.03ns +/-5%; the falling time of the current waveform is 4419.5ns +/-5%; the half pulse width of the current waveform is 1397.5ns +/-5%; the duration of the current waveform was 5507ns ± 5%.

The peak value of the current waveform refers to the maximum amplitude of the measured signal, the rising time refers to the time required by the current waveform from 10% to 90% of the peak value, the falling time refers to the time required by the current waveform from 90% to 10% of the peak value, the half pulse width refers to the time required by the current waveform from 50% in the rising phase to 50% in the falling phase, and the waveform duration refers to the time required by the current waveform from the start of the rising phase to the zero point of the waveform.

By utilizing the calibration system constructed by the invention, when fuse electrostatic discharge modules (500pF-500 omega and 500pF-5000 omega) are calibrated, corresponding current waveforms are measured to be matched with the waveforms provided by the invention, and the technical parameters are in the range of table 1.

TABLE 1 fuze electrostatic discharge voltage waveform

In summary, the system and the method utilize the electrostatic discharge simulator to select electrostatic discharge models of 500pF-500 omega and 500pF-5000 omega to complete fuze electrostatic discharge, and utilize the current sensor to sample and transmit the sampled electrostatic discharge current to the oscilloscope through the attenuator, so as to acquire the waveform of the electrostatic discharge current and obtain corresponding characteristic parameters. The fuse electrostatic discharge current waveform calibration parameter index and the technical conditions which the testing equipment should have are provided, so that the fuse electrostatic discharge test has higher operability, and the accuracy and repeatability of the fuse electrostatic discharge test result are ensured.