CN112526429A - Fuse electrostatic discharge module voltage calibration system and method - Google Patents
Fuse electrostatic discharge module voltage calibration system and method Download PDFInfo
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- CN112526429A CN112526429A CN202011389585.2A CN202011389585A CN112526429A CN 112526429 A CN112526429 A CN 112526429A CN 202011389585 A CN202011389585 A CN 202011389585A CN 112526429 A CN112526429 A CN 112526429A
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Abstract
The invention discloses a fuse electrostatic discharge module voltage calibration system and a fuse electrostatic discharge module voltage calibration method, wherein the system comprises a high-voltage power supply, one end of the high-voltage power supply is grounded, the other end of the high-voltage power supply is connected with one input end of a vacuum relay through a charging resistor, one output end of the vacuum relay is connected with one end of a charging and discharging capacitor, the other end of the charging and discharging capacitor is grounded, the other output end of the vacuum relay is connected with one end of a measuring resistor through a discharging resistor, the other end of the measuring resistor is grounded, a low-voltage direct-current power supply is connected with a control end of the vacuum relay, the switching of the vacuum relay is controlled through the low-voltage direct-current power supply, two input ends of a high-voltage probe are respectively connected with two ends of the measuring. The system has a simple structure, and can ensure accuracy and repeatability.
Description
Technical Field
The invention relates to the technical field of electrostatic discharge measurement methods, in particular to a fuse electrostatic discharge module voltage 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. Although the electrical principle diagram of the electrostatic discharge device is given in the standard, 25kV electrostatic discharge pulses on a typical human body are specified, and the electromagnetic wave-shape characteristic of the electrostatic discharge device is characterized by a rising time of 15ns (10% to 90% of a peak value) and a falling time of 150ns (90% to 10% of the peak value), and the waveform graphs of the electrostatic discharge with standard loads of 500 omega and 5000 omega are taken as the waveform characteristics of the electrostatic discharge. However, this method is a standard basis and gives only an approximate shape, and no specific index is given. Such as peak voltage, peak voltage error, width of 50% pulse peak, width error of 50% pulse peak, rise time error, etc. Without these major parameter indexes, an operator cannot accurately determine whether the electrostatic discharge waveform meets the requirements.
Disclosure of Invention
The invention aims to provide a fuse electrostatic discharge module voltage calibration system which is simple in structure and capable of ensuring 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 voltage calibration system is characterized in that: the high-voltage power supply is grounded at one end, the other end of the high-voltage power supply is connected with one input end of a vacuum relay through a charging resistor, one output end of the vacuum relay is connected with one end of a charging and discharging capacitor, the other end of the charging and discharging capacitor is grounded, the other output end of the vacuum relay is connected with one end of a measuring resistor through a discharging resistor, the other end of the measuring resistor is grounded, a low-voltage direct-current power supply is connected with a control end of the vacuum relay, switching of the vacuum relay is controlled through the low-voltage direct-current power supply, two input ends of a high-voltage probe are respectively connected with two ends of the measuring resistor, and a signal output end of the high-voltage probe is.
Preferably, the high-voltage power supply uses a GLOW28720 high-voltage electrostatic generator, and the voltage output range is 0-35 kV.
Preferably, the charging resistor is a 1M Ω charging resistor.
Preferably, the vacuum relay is a 30kV vacuum relay, and the low-voltage power supply is a 16V low-voltage power supply.
Preferably, the charging and discharging capacitor is a 500pF capacitor, and two capacitors of 250pF and 30kV are connected in series to form the capacitor.
Preferably, the high-voltage probe is a 20kV high-voltage probe, and the attenuator is a 30dB attenuator.
Preferably, the oscilloscope is a 7404B oscilloscope of Tak, the bandwidth is 4GHz, and the frequency is 20G/s.
The invention also discloses a fuse electrostatic discharge module voltage calibration method, which uses the calibration system and is characterized by comprising the following steps:
connecting a high-voltage power supply, a charging resistor, a charging and discharging capacitor, a vacuum relay, a low-voltage direct-current power supply and a discharging resistor to form a fuse electrostatic discharging module;
connecting a measuring resistor, a high-voltage probe, an attenuator and an oscilloscope to form a fuse electrostatic discharge voltage waveform acquisition module;
the vacuum relay is controlled to act through the low-voltage direct-current power supply, so that the high-voltage power supply charges the charge-discharge capacitor through the charging resistor;
after the charging is finished, the vacuum relay is controlled to act through the low-voltage direct-current power supply, so that the charging and discharging capacitor discharges, the voltage at two ends of the measuring resistor is acquired by using the high-voltage probe and is transmitted to the oscilloscope through the attenuator, and the acquisition of the electrostatic discharge voltage waveform is finished;
and correcting the discharge voltage of the measuring resistor according to the waveform acquired by the oscilloscope and the standard value of the measuring resistor.
The further technical scheme is as follows: during testing, the test voltage of +25kV voltage to 500 omega resistance, the test voltage of-25 kV voltage to 500 omega resistance, the test voltage of +25kV voltage to 5000 omega resistance and the test voltage of-25 kV voltage to 5000 omega resistance are respectively obtained.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:
the system and the method of the invention use a high-voltage power supply to charge a 500pF capacitor through the current limiting of a charging resistor, and use a low-voltage DC power supply to control the opening and closing of a vacuum relay to control the charging and discharging of the capacitor, thereby completing the electrostatic discharge of a 500 omega or 5000 omega resistor; and acquiring the voltages at the two ends of the measuring resistor by using the high-voltage probe, and transmitting the voltages to the oscilloscope through the attenuator to finish the acquisition of the voltage waveform of the electrostatic discharge. By utilizing the system and the method, a large number of experiments and data analysis are carried out to obtain a voltage waveform of discharging the resistance of +25kV to 500 omega, a voltage waveform of discharging the resistance of-25 kV to 500 omega, a voltage waveform of discharging the resistance of +25kV to 5000 omega, a voltage waveform of discharging the resistance of-25 kV to 5000 omega and corresponding waveform parameters. The method has the characteristic of universality, a fuse electrostatic discharge device can be built according to the method, and the voltage waveform parameters provided by the method are utilized to calibrate the discharge device.
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 voltage calibration system, which includes a high voltage power supply, one end of the high voltage power supply is grounded, the other end of the high voltage power supply is connected with one input end of a vacuum relay through a charging resistor, one output end of the vacuum relay is connected with one end of a charging and discharging capacitor, the other end of the charging and discharging capacitor is grounded, the other output end of the vacuum relay is connected with one end of a measuring resistor through a discharging resistor, the other end of the measuring resistor is grounded, a low voltage dc power supply is connected with a control end of the vacuum relay, switching of the vacuum relay is controlled through the low voltage dc power supply, two input ends of a high voltage probe are respectively connected with two ends of the measuring resistor, and a signal output end of the high voltage probe is connected.
The high-voltage power supply adopts a GLOW28720 high-voltage electrostatic generator which is a low-power high-voltage adjustable power supply, adopts a pulse reverse peak booster circuit, and is matched with a shaped high-voltage pack, a voltage doubling circuit, a control circuit, a power supply circuit and the like to realize the high-voltage generator which is adjusted from zero, wherein the voltage output range is 0-35 kV, and the requirement of 25kV discharge voltage in GJB573A-98 is met. The charging resistor is selected to be 1M omega to prevent excessive charging current.
A vacuum relay of 30kV is adopted for controlling high-voltage charging and discharging and isolating a low-voltage system. The low-voltage direct-current power supply is selected according to the working voltage of the vacuum relay, the system selects a 16V power supply, and the switching of the vacuum relay is controlled by utilizing the conduction of the low-voltage direct-current power supply, so that the charging of the capacitor by the high-voltage power supply and the discharging of the charged capacitor are controlled.
The charge-discharge capacitance is 500pF electric capacity, chooses for use two 250pF, 30 kV's electric capacity to establish ties, reduces the inductance of system. The discharge resistor and the measuring resistor are respectively two noninductive resistors of 500 omega and 5000 omega, and the discharge resistor and the measuring resistor are matched by resistors with the same resistance value.
And a 20kV high-voltage probe is used for testing the voltage at two ends of the measuring resistor, the high-voltage probe is connected to an oscilloscope through a 30dB attenuator to finish the test of the discharge voltage, and the oscilloscope adopts a Take 7404B oscilloscope, the bandwidth is 4GHz and the frequency is 20G/s.
Correspondingly, the embodiment of the invention also discloses a fuse electrostatic discharge module voltage calibration method, and the calibration system is characterized by comprising the following steps:
connecting a high-voltage power supply, a charging resistor, a charging and discharging capacitor, a vacuum relay, a low-voltage direct-current power supply and a discharging resistor to form a fuse electrostatic discharging module;
connecting a measuring resistor, a high-voltage probe, an attenuator and an oscilloscope to form a fuse electrostatic discharge voltage waveform acquisition module;
the vacuum relay is controlled to act through the low-voltage direct-current power supply, so that the high-voltage power supply charges the charge-discharge capacitor through the charging resistor;
after the charging is finished, the vacuum relay is controlled to act through the low-voltage direct-current power supply, so that the charging and discharging capacitor discharges, the voltage at two ends of the measuring resistor is acquired by using the high-voltage probe and is transmitted to the oscilloscope through the attenuator, and the acquisition of the electrostatic discharge voltage waveform is finished;
and correcting the discharge voltage of the measuring resistor according to the waveform acquired by the oscilloscope and the standard value of the measuring resistor.
The voltage waveform obtained when the voltage of +25kV is discharged to the resistance of 500 omega is shown in figure 2, wherein the peak value of the voltage waveform is 12.48kV +/-5 percent; the rise time of the voltage waveform is 19.69ns +/-5%; the voltage waveform has a fall time of 400.5ns +/-5%; the half pulse width of the voltage waveform is 186.5ns +/-5%; the duration of the voltage waveform is 583.5ns 5%.
The obtained voltage waveform of-25 kV voltage to 500 omega resistance discharge is shown in figure 3, and the peak value of the voltage waveform is-12.50 kV +/-5%; the rise time of the voltage waveform is 19.43ns +/-5%; the fall time of the voltage waveform is 399.1ns +/-5%; the half pulse width of the voltage waveform is 197.6ns +/-5%; the duration of the voltage waveform is 597ns ± 5%.
The obtained voltage waveform of the +25kV voltage to 5000 omega resistance discharge is shown in figure 4, and the peak value of the voltage waveform is 12.46kV +/-5%; the rise time of the voltage waveform is 23.67ns +/-5%; the fall time of the voltage waveform is 4354.5ns +/-5%; the half pulse width of the voltage waveform is 1366.5ns + -5%; the duration of the voltage waveform is 5555.0ns 5%.
The obtained voltage waveform of-25 kV voltage to 5000 omega resistance discharge is shown in figure 5, and the peak value of the voltage waveform is-12.45 kV +/-5%; the rise time of the voltage waveform is 24.01ns +/-5%; the fall time of the voltage waveform is 4357.0ns +/-5%; the half pulse width of the voltage waveform is 1415.5ns + -5%; the duration of the voltage waveform is 5568.5ns 5%.
The peak value of the voltage waveform refers to the maximum amplitude of the measured signal, the rising time refers to the time required by the voltage waveform from 10% to 90% of the peak value, the falling time refers to the time required by the voltage waveform from 90% to 10% of the peak value, the half-pulse width refers to the time required by the voltage waveform from 50% in the rising phase to 50% in the falling phase, and the waveform duration refers to the time required by the voltage waveform from the start point of the rising phase to the zero point of the waveform.
By utilizing the calibration device constructed by the invention, the non-inductive resistor equivalent to the discharge resistor is selected as the calibration resistor. In calibrating the fuze electrostatic discharge modules (500pF-500 Ω and 500pF-5000 Ω), corresponding voltage waveforms were measured to match those provided by the present invention, with the specifications in the range of attached table 1.
TABLE 1 fuze electrostatic discharge voltage waveform
In conclusion, the system and the method establish a charging and discharging network by establishing 500pF-500 omega and 500pF-5000 omega electrostatic discharge models, utilize a measuring resistor and a high-voltage probe to sample, transmit the samples to an oscilloscope through an attenuator, acquire an electrostatic discharge voltage waveform and acquire waveform parameters. The invention provides the parameter indexes for verifying the fuse electrostatic discharge voltage waveform and the technical conditions which the testing equipment should have, so that the fuse electrostatic discharge test has higher operability, and the accuracy and the repeatability of the fuse electrostatic discharge test result are ensured.
Claims (10)
1. A fuse electrostatic discharge module voltage calibration system is characterized in that: the high-voltage power supply is grounded at one end, the other end of the high-voltage power supply is connected with one input end of a vacuum relay through a charging resistor, one output end of the vacuum relay is connected with one end of a charging and discharging capacitor, the other end of the charging and discharging capacitor is grounded, the other output end of the vacuum relay is connected with one end of a measuring resistor through a discharging resistor, the other end of the measuring resistor is grounded, a low-voltage direct-current power supply is connected with a control end of the vacuum relay, switching of the vacuum relay is controlled through the low-voltage direct-current power supply, two input ends of a high-voltage probe are respectively connected with two ends of the measuring resistor, and a signal output end of the high-voltage probe is.
2. The fuze electrostatic discharge module voltage calibration system of claim 1, wherein: the high-voltage power supply uses a GLOW28720 high-voltage electrostatic generator, and the voltage output range is 0-35 kV.
3. The fuze electrostatic discharge module voltage calibration system of claim 1, wherein: the charging resistor is a 1M omega charging resistor.
4. The fuze electrostatic discharge module voltage calibration system of claim 1, wherein: the vacuum relay is a 30kV vacuum relay, and the low-voltage power supply is a 16V low-voltage power supply.
5. The fuze electrostatic discharge module voltage calibration system of claim 1, wherein: the charge-discharge capacitor is a 500pF capacitor, and two capacitors of 250pF and 30kV are connected in series to form the capacitor.
6. The fuze electrostatic discharge module voltage calibration system of claim 1, wherein: the high-voltage probe is a 20kV high-voltage probe, and the attenuator is a 30dB attenuator.
7. The fuze electrostatic discharge module voltage calibration system of claim 1, wherein: the oscilloscope adopts a 7404B oscilloscope of Tak, the bandwidth is 4GHz, and the frequency is 20G/s.
8. A fuze electrostatic discharge module voltage calibration method using the calibration system of any of claims 1-7, characterized by comprising the steps of:
connecting a high-voltage power supply, a charging resistor, a charging and discharging capacitor, a vacuum relay, a low-voltage direct-current power supply and a discharging resistor to form a fuse electrostatic discharging module;
connecting a measuring resistor, a high-voltage probe, an attenuator and an oscilloscope to form a fuse electrostatic discharge voltage waveform acquisition module;
the vacuum relay is controlled to act through the low-voltage direct-current power supply, so that the high-voltage power supply charges the charge-discharge capacitor through the charging resistor;
after the charging is finished, the vacuum relay is controlled to act through the low-voltage direct-current power supply, so that the charging and discharging capacitor discharges, the voltage at two ends of the measuring resistor is acquired by using the high-voltage probe and is transmitted to the oscilloscope through the attenuator, and the acquisition of the electrostatic discharge voltage waveform is finished;
and correcting the discharge voltage of the measuring resistor according to the waveform acquired by the oscilloscope and the standard value of the measuring resistor.
9. The fuze electrostatic discharge module voltage calibration method of claim 8, wherein: the discharge resistor and the measuring resistor are matched by adopting resistors with the same resistance value.
10. The fuze electrostatic discharge module voltage calibration method of claim 8, wherein: during testing, the test voltage of +25kV voltage to 500 omega resistance, the test voltage of-25 kV voltage to 500 omega resistance, the test voltage of +25kV voltage to 5000 omega resistance and the test voltage of-25 kV voltage to 5000 omega resistance are respectively obtained.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115586366A (en) * | 2022-11-17 | 2023-01-10 | 中国工程物理研究院电子工程研究所 | Method for calculating steady-state work average peak current in fuse high-voltage charging process |
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