CN117686797A - Stable and reliable lightning electronic interference test equipment - Google Patents
Stable and reliable lightning electronic interference test equipment Download PDFInfo
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- CN117686797A CN117686797A CN202311475341.XA CN202311475341A CN117686797A CN 117686797 A CN117686797 A CN 117686797A CN 202311475341 A CN202311475341 A CN 202311475341A CN 117686797 A CN117686797 A CN 117686797A
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Abstract
The invention provides stable and reliable lightning electronic interference test equipment, which comprises: the lightning analog waveform generator comprises a control module, a power supply module, a lightning analog waveform generator, a discharge electrode, a voltage dividing device, a current dividing module and a waveform receiving module; the control module manages the power supply module and the simulated lightning waveform generator through a communication network, and respectively detects the numerical value of the lightning electronic interference signal through the voltage dividing device, the current dividing module and the waveform receiving module; the control module controls the simulated lightning waveform generator to generate a lightning pulse waveform, and discharges the equipment to be tested through the discharge electrode; the power module supplies power to each module according to the control signal of the control module, and the simulated lightning waveform generator comprises: the lightning electric wave generating units are used for generating pulse waveforms in different forms, and the waveform receiving module is used for collecting waveform parameters of lightning electronic interference signals.
Description
Technical Field
The invention belongs to the technical field of safety test of mobile ground wireless communication equipment, and particularly relates to stable and reliable lightning electronic interference test equipment.
Background
The lightning electronic interference is that huge lightning current causes physical damage of the electronic equipment when lightning occurs, so that the internal structure of the electronic equipment and the surface of the electronic equipment are subjected to insulation breakdown, explosion, bending, melting, combustion, vaporization and the like. The physical damage effect of lightning includes thermal effect, breakdown effect, strong magnetic field effect and impulse wave effect. They include ablation, perforation or crack roughening of the exterior surface of the electronic device.
The lightning protection problem of the electronic equipment is always a challenging research direction, the mobile electronic equipment is inevitably subjected to a lightning environment in the field, and if the lightning protection capability is insufficient, lightning damage can be generated. For mobile electronic equipment, the lightning protection technology at home and abroad is not mature, the lightning direct effect test of the mobile electronic equipment is carried out at home and abroad at present, and no corresponding engineering accumulation exists, so that the lightning effect test of the mobile electronic equipment is necessary.
Chinese patent publication CN102508210a discloses a lightning pulse signal detection and anti-interference device, which comprises a receiving antenna, a receiving front end, an ADC unit, a DDC unit, a signal short-time energy statistics unit, a receiver state switching control unit, a signal short-time energy mean statistics unit, a constant false alarm threshold coefficient register unit, a multiplier, a detection threshold register unit, a comparator and a detection result output unit. A detection threshold is formed by counting the short-time energy of the background noise output by the receiver and the average value of the short-time energy, and then the detection threshold is compared with the short-time energy value of the lightning signal output by the receiver, so that the self-adaptive detection of the lightning pulse signal is realized. In the process of forming the detection threshold, the influence of external non-Gaussian interference on the detection threshold is judged and eliminated by calculating the normalized kurtosis value. In the process of forming the detection threshold, a forgetting factor algorithm is also introduced to calculate the short-time energy value of the background noise of the receiver so as to eliminate the influence of external non-stationary interference signals on the detection threshold. The alarm detection method is applied to a system for passively positioning the lightning pulse radiation source, and the duration of the lightning pulse is short, namely a few microseconds, and the duration of the lightning pulse is long, namely a few milliseconds, and the pulse shape is irregular, so that the detection performance is rapidly reduced, and even the lightning pulse cannot be used.
The Chinese patent publication CN109655728A discloses a surge voltage generator and a simulated lightning test device comprising the same, wherein the charge-discharge integrated capacitor grading surge voltage generator comprises two layers of round corner rectangular cover plates, support posts, resistors, capacitors, ignition ball gaps and outgoing lines, and the resistors, the capacitors, the ignition ball gaps and the outgoing lines are all fixed on the support posts; the lightning simulating test device is based on the charge-discharge integrated capacitor grading type impulse voltage generator and comprises a control transformer, a rectifying circuit, a ZVS driving plate, a high-voltage package and the charge-discharge integrated capacitor grading type impulse voltage generator. The characteristics of parallel charging and serial discharging of the capacitor are effectively utilized, and the resistor, the capacitor and the ignition ball gap are orderly arranged between the two layers of round corner rectangular cover plates, so that the capacitor charging and discharging integrated device has the advantages of being integrated in charging and discharging and compact in structure.
In summary, the prior art has the following disadvantages: the field lightning stroke test is an important test item in a test procedure, various weak links in the communication equipment can be found in the test process, and the field lightning stroke test has decisive significance for judging whether the equipment can be put into operation or not, and is an important method for ensuring the insulation level of the equipment and avoiding failure caused by lightning stroke. The lightning impulse withstand voltage and partial discharge test has very important significance for timely finding defects and ensuring the safe operation of communication equipment. The digital signal processor is utilized to control lightning impulse withstand voltage and partial discharge test and detect test parameters in real time, and the lightning impulse withstand voltage and partial discharge test device has the advantages of being convenient to operate, high in measurement accuracy, good in reliability, high in integration level, strong in anti-interference capability and the like.
Disclosure of Invention
To solve the above technical problems, a first aspect of the present invention provides a stable and reliable lightning electronic interference test device, where the test device includes: the lightning analog waveform generator comprises a control module, a power supply module, a lightning analog waveform generator, a discharge electrode, a voltage dividing device, a current dividing module and a waveform receiving module;
the control module manages the power supply module and the simulated lightning waveform generator through a communication network, and respectively detects the numerical value of the lightning electronic interference signal through the voltage dividing device, the current dividing module and the waveform receiving module; the control module controls the simulated lightning waveform generator to generate a lightning pulse waveform, and discharges the equipment to be tested through the discharge electrode;
the power module supplies power to each module according to the control signal of the control module, and each module comprises: the lightning analog waveform generator, the voltage dividing device, the shunt module and the waveform receiving module;
the simulated lightning waveform generator comprises: a plurality of lightning wave generating units, each of which generates a pulse waveform having a different form;
and the waveform receiving module is used for collecting waveform parameters of the lightning electronic interference signals.
According to the experimental device of the first aspect of the invention, the plurality of lightning electric wave generating units respectively generate lightning electric wave pulse waveforms in different forms, the pulse waveforms comprising: high voltage unimodal narrow pulse current, high voltage multimodal low duty cycle narrow pulse current, high voltage unimodal long residual pulse current, high voltage multimodal short residual pulse current.
According to the experimental equipment of the first aspect of the invention, the control module controls the simulated lightning wave generator to output one form of lightning wave pulse waveform or output a pulse waveform in which more than two forms of lightning wave pulse waveforms are mixed.
According to the experimental equipment of the first aspect of the invention, the lightning electric wave pulse waveform output by the simulated lightning wave generator is connected to a discharge electrode through a high-voltage-resistant large-diameter discharge wire; the discharge electrode is a columnar nonmetallic electrode with the diameter of 10mm plus or minus 5mm, so that lightning current is radiated in the form of plasma arc.
According to the experimental equipment disclosed by the first aspect of the invention, the discharge end of the cylindrical nonmetallic electrode is transited from the cylindrical non-angular to the hemispherical surface.
The experimental apparatus according to the first aspect of the invention, the simulated lightning waveform generator further comprises a high voltage pulse generator that converts output energy of the power supply module into high voltage continuous pulses and supplies the high voltage continuous pulses to the plurality of lightning wave generation units.
The experimental setup of the first aspect of the invention, the control module comprises: a digital processor composed of a personal computer, a single-chip microprocessor and an FPGA; the control module is connected with the lightning waveform generator through an optical fiber.
According to the experimental equipment in the first aspect of the invention, the voltage dividing device, the current dividing module and the waveform receiving module are arranged on the periphery of the equipment to be tested, and the voltage dividing device, the current dividing module and the waveform receiving module comprise sensors which are used for non-contact detection of lightning voltage amplitude, induced current amplitude and lightning waveform on the equipment to be tested.
According to the experimental equipment disclosed by the first aspect of the invention, the attenuator is arranged in the voltage dividing device and the current dividing module, so that the detected lightning voltage amplitude and the induced current amplitude are attenuated to the level amplitude which can be received and converted by the internally arranged analog-digital converter.
The experimental device of the first aspect of the invention, the waveform receiving module employs a radio sensor.
The invention can output various pulse output modes by selecting the waveform generator module to simulate the lightning discharge mode, including the simulated waveform output of multiple lightning strokes and multiple pulse groups, and has the following advantages: the control module controls the generation of lightning waves by controlling the power supply of the power supply module to the lightning wave generation module, the measurement and control module is also connected with the lightning wave generation module to control the grounding of the lightning waves, and meanwhile, the control module also controls the waveform of the lightning waves by controlling the power supply of the power supply module. The control module obtains a voltage signal in the lightning wave test process through the voltage divider and the current divider, and analyzes the voltage signal to obtain a lightning impulse test result. The testing device is simple in structure and easy to operate, and can automatically measure the lightning-proof capability of the tested product.
Drawings
FIG. 1 is a block diagram of a lightning electronic interference device test system of the present invention.
Fig. 2 is a schematic diagram of a lightning electronic interference device signal generator of the invention.
Wherein: A. b, C A, D, lightning current signal generators with different waveforms, 3A discharge electrode, 10A control module, 11A simulated lightning waveform generator, 111A high-voltage pulse generator, 112A lightning signal generating unit with different waveforms, 12A waveform receiving module, 13A voltage dividing device, 14A current dividing module, 15A power module.
Detailed Description
The following detailed description of specific embodiments of the invention refers to the accompanying drawings.
As shown in FIG. 1, the lightning electronic interference equipment test system disclosed by the invention is in a structural block diagram.
The invention discloses a stable and reliable lightning electronic interference test device, which comprises: the lightning analog waveform generator comprises a control module 10, a power supply module 15, a lightning analog waveform generator 11, a discharge electrode 3, a voltage dividing device 13, a shunt module 14 and a waveform receiving module 12;
the control module 10 manages the power supply module 15 and the simulated lightning waveform generator 11 through a communication network, and the control module 10 respectively detects the numerical value of the lightning electronic interference signal through the voltage dividing device 13, the current dividing module 14 and the waveform receiving module 12; the control module 10 controls the simulated lightning waveform generator 11 to generate lightning pulse waveforms and discharges the equipment to be tested through the discharge electrode 3;
the power module 15 supplies power to each module according to the control signal of the control module 10, and each module includes: a simulated lightning waveform generator 11, a voltage dividing device 13, a shunt module 14 and a waveform receiving module 12;
the simulated lightning waveform generator 11 comprises: a plurality of lightning electric wave generating units A-D, each of which generates a pulse waveform having a different form;
the control device generates high-voltage electric waves by controlling the high-voltage pulse generator, and the A electric wave generating unit generates high-voltage single-peak narrow-pulse current; the B electric wave generating unit generates high-voltage multimodal low-duty ratio narrow pulse current, the C electric wave generating unit generates high-voltage multimodal long residual wave pulse current, and the D electric wave generating unit generates high-voltage multimodal short residual wave pulse current. The a-D wave generating units are all connected to the discharge electrode 3 through a high voltage cable.
In order to overcome the interference of high-voltage pulse to the control device, the control device is connected with the high-voltage pulse generator and the A-D electric wave generating unit through optical fibers.
The waveform receiving module 12 collects waveform parameters of the lightning electronic interference signals. The waveform receiving module 12 includes an electric wave signal sensor, and collects the waveform shape of the lightning strike electric wave. The radio wave signal sensor is typically a radio detector. Such as a diode detector or a synchronous detector. The collected signals are converted into digital data through amplification and an analog-digital converter and are transmitted to a control device.
According to the experimental device of the first aspect of the invention, the plurality of lightning electric wave generating units respectively generate lightning electric wave pulse waveforms in different forms, the pulse waveforms comprising: high voltage unimodal narrow pulse current, high voltage multimodal low duty cycle narrow pulse current, high voltage unimodal long residual pulse current, high voltage multimodal short residual pulse current.
Fig. 2 is a schematic diagram of a signal generator, a discharge electrode and a control device of the lightning electronic interference device according to the invention.
According to the experimental equipment of the first aspect of the invention, the control module controls the simulated lightning wave generator to output one form of lightning wave pulse waveform or output a pulse waveform in which more than two forms of lightning wave pulse waveforms are mixed.
According to the experimental equipment of the first aspect of the invention, the lightning electric wave pulse waveform output by the simulated lightning wave generator is connected to a discharge electrode through a high-voltage-resistant large-diameter discharge wire; the discharge electrode is a columnar nonmetallic electrode with the diameter of 10mm plus or minus 5mm, so that lightning current is radiated in the form of plasma arc.
According to the experimental equipment disclosed by the first aspect of the invention, the discharge end of the cylindrical nonmetallic electrode is transited from the cylindrical non-angular to the hemispherical surface.
The experimental apparatus according to the first aspect of the invention, the simulated lightning waveform generator further comprises a high voltage pulse generator that converts output energy of the power supply module into high voltage continuous pulses and supplies the high voltage continuous pulses to the plurality of lightning wave generation units.
The experimental setup of the first aspect of the invention, the control module comprises: a digital processor composed of a personal computer, a single-chip microprocessor and an FPGA; the control module is connected with the lightning waveform generator through an optical fiber.
According to the experimental equipment in the first aspect of the invention, the voltage dividing device, the current dividing module and the waveform receiving module are arranged on the periphery of the equipment to be tested, and the voltage dividing device, the current dividing module and the waveform receiving module comprise sensors which are used for non-contact detection of lightning voltage amplitude, induced current amplitude and lightning waveform on the equipment to be tested.
According to the experimental equipment disclosed by the first aspect of the invention, the attenuator is arranged in the voltage dividing device and the current dividing module, so that the detected lightning voltage amplitude and the induced current amplitude are attenuated to the level amplitude which can be received and converted by the internally arranged analog-digital converter.
The experimental device of the first aspect of the invention, the waveform receiving module employs a radio sensor.
The second aspect of the invention discloses an operation method of a lightning electronic interference equipment test system, and the test purpose is achieved by operating the test system. The test was performed comprising the following steps:
step 1: the control device 10 controls a plurality of lightning wave generating units inside the simulated lightning wave generator 11 to generate different forms of lightning wave pulse waveforms;
step 2, placing the device to be tested under a discharge electrode 3, radiating lightning current in a plasma arc mode by the discharge electrode, and injecting the lightning current into the device to be tested;
step 3: the control device collects and records lightning current parameters through the voltage dividing device, the shunt module and the waveform receiving module;
step 4: based on the damage condition of the device under test and the recorded lightning current parameters, the control terminal 10 evaluates the lightning-resistant electronic interference level of the device under test.
Finally, it should be noted that the above-mentioned embodiments are merely for illustrating the technical solution of the embodiment of the present invention, and not for limiting, and although the embodiment of the present invention has been described in detail with reference to the above-mentioned preferred embodiments, it should be understood by those skilled in the art that modifications and equivalent substitutions can be made to the technical solution of the embodiment of the present invention without departing from the spirit and scope of the technical solution of the embodiment of the present invention.
Claims (10)
1. A stable and reliable lightning electronic interference test device, characterized in that the test device comprises: the lightning analog waveform generator comprises a control module, a power supply module, a lightning analog waveform generator, a discharge electrode, a voltage dividing device, a current dividing module and a waveform receiving module;
the control module manages the power supply module and the simulated lightning waveform generator through a communication network, and respectively detects the numerical value of the lightning electronic interference signal through the voltage dividing device, the current dividing module and the waveform receiving module; the control module controls the simulated lightning waveform generator to generate a lightning pulse waveform, and discharges the equipment to be tested through the discharge electrode;
the power module supplies power to each module according to the control signal of the control module, and each module comprises: the lightning analog waveform generator, the voltage dividing device, the shunt module and the waveform receiving module;
the simulated lightning waveform generator comprises: a plurality of lightning wave generating units, each of which generates a pulse waveform having a different form;
and the waveform receiving module is used for collecting waveform parameters of the lightning electronic interference signals.
2. The experimental facility according to claim 1, wherein the plurality of lightning wave generating units respectively generate lightning wave pulse waveforms of different forms, the pulse waveforms comprising: high voltage unimodal narrow pulse current, high voltage multimodal low duty cycle narrow pulse current, high voltage unimodal long residual pulse current, high voltage multimodal short residual pulse current.
3. The experimental facility according to claim 2, wherein the control module controls the simulated lightning waveform generator to output one form of lightning wave pulse waveform or to output a pulse waveform in which two or more forms of lightning wave pulse waveforms are mixed.
4. The experimental facility according to claim 3, wherein the lightning wave pulse waveform outputted from the simulated lightning wave generator is connected to a discharge electrode through a high-voltage-resistant large-diameter discharge wire; the discharge electrode is a columnar nonmetallic electrode with the diameter of 10mm plus or minus 5mm, so that lightning current is radiated in the form of plasma arc.
5. The experimental apparatus according to claim 4, wherein the discharge end of the cylindrical nonmetallic electrode is transited from a cylindrical non-angular to a hemispherical surface.
6. The experimental apparatus according to claim 2, wherein the analog lightning waveform generator further comprises a high voltage pulse generator that converts output energy of the power supply module into high voltage continuous pulses and supplies the high voltage continuous pulses to the plurality of lightning wave generating units.
7. The experimental apparatus of claim 1, wherein said control module comprises: a digital processor composed of a personal computer, a single-chip microprocessor and an FPGA; the control module is connected with the lightning waveform generator through an optical fiber.
8. The experimental apparatus of claim 1, wherein the voltage divider, the current divider module, and the waveform receiving module are disposed around the device under test, and the voltage divider, the current divider module, and the waveform receiving module each comprise a sensor for non-contact detection of lightning voltage amplitude, induced current amplitude, and lightning waveform on the device under test.
9. The experimental facility according to claim 8, wherein the voltage dividing device and the current dividing module are internally provided with attenuators for attenuating the detected lightning voltage amplitude and the induced current amplitude to the level amplitude which can be received and converted by an internally provided analog-digital converter.
10. The experimental apparatus of claim 8, wherein the waveform receiving module employs a radio sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311475341.XA CN117686797A (en) | 2023-11-08 | 2023-11-08 | Stable and reliable lightning electronic interference test equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311475341.XA CN117686797A (en) | 2023-11-08 | 2023-11-08 | Stable and reliable lightning electronic interference test equipment |
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| CN117686797A true CN117686797A (en) | 2024-03-12 |
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| CN202311475341.XA Pending CN117686797A (en) | 2023-11-08 | 2023-11-08 | Stable and reliable lightning electronic interference test equipment |
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- 2023-11-08 CN CN202311475341.XA patent/CN117686797A/en active Pending
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