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Signal undisturbed test system for resisting strong electromagnetic interference

A technology of strong electromagnetic interference and test system, applied in the direction of measurement device, measurement of electrical variables, pulse characteristic measurement, etc., can solve the problems affecting the accuracy of test results, excessive voltage or current signal, etc., to achieve accurate and reliable test results, avoid Interference and solve the effect of excessive cable coupling signal

Active Publication Date: 2019-01-11
INST OF APPLIED ELECTRONICS CHINA ACAD OF ENG PHYSICS
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Problems solved by technology

[0005] The invention mainly aims at the problem that in the strong electromagnetic pulse test, the voltage or current signal generated by the coupling of the test cable is too large, which seriously affects the accuracy of the test result, and proposes a signal non-disturbance test system that resists strong electromagnetic interference and realizes strong electromagnetic pulse Accurate and non-disturbance testing of signals

Method used

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  • Signal undisturbed test system for resisting strong electromagnetic interference
  • Signal undisturbed test system for resisting strong electromagnetic interference
  • Signal undisturbed test system for resisting strong electromagnetic interference

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Embodiment 1

[0035]The test sensor selects the antenna, and the antenna transmits the received signal to the electro-optical conversion module. The electro-optical conversion module is integrally integrated in the portable shielding cavity, and the overall shielding efficiency of the cavity is not less than 100dB. The photoelectric conversion module is powered by a built-in lithium-ion battery with a power supply voltage of 12V and a battery capacity of 50000mAh, which can reach 3 hours of uninterrupted power supply. The attenuator in the electro-optical conversion module is an adjustable attenuator, the attenuation value adjustment range is 0~100dB, the withstand power is 100W, the applicable frequency range is 1~18GHz, the detector applicable frequency range is 1~18GHz, and the sensitivity is not less than 0.18 V / μW, the detection power range is -5dBm~30dBm, the data acquisition card adopts single-channel sampling, the sampling rate is 2GS / s, the acquisition accuracy is 12Bit, the minimum...

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Abstract

The invention discloses a signal undisturbed test system for resisting strong electromagnetic interference, which comprises a test sensor, an electro-optical conversion module and a photoelectric conversion module. The test sensor is connected with the electro-optical conversion module; the electro-optical conversion module is integrated in a portable shielded cavity; a fiber-optic waveguide through-wall component is respectively arranged on the side wall of the portable shielded cavity and the cavity wall of the test shielded cavity; the electro-optical conversion module and the photoelectricconversion module are connected through an optical fiber; and the optical fiber penetrates through the fiber-optic waveguide through-wall components on the portable shielded cavity and the test shielded cavity, sequentially. The signal undisturbed test system for resisting strong electromagnetic interference in the invention adopts the test system and solves the problem that a cable coupling signal in a current strong electromagnetic test is too large to affect the accuracy of the test result.

Description

technical field [0001] The invention belongs to the technical field of electromagnetic testing, and in particular relates to a signal non-disturbance testing system against strong electromagnetic interference. Background technique [0002] In recent years, with the frequent use of high-power radars and transmitters, the electromagnetic environment has become increasingly complex, especially the emergence of a strong electromagnetic environment represented by high-power microwaves, nuclear electromagnetic pulses, and high-intensity radiation fields, which poses an increasing threat to electronic systems. Increase; Accurate and non-disturbance testing of strong electromagnetic environment is the basis for carrying out experiments on electromagnetic environment effects of electronic systems and research on protection technologies. [0003] In a strong electromagnetic pulse environment, the electromagnetic signal is easily coupled with the test cable, resulting in a huge voltage...

Claims

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Application Information

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IPC IPC(8): G01R29/02G01R29/027G01R1/18
CPCG01R1/18G01R29/02G01R29/027
Inventor 严志洋秦风林江川蔡金良马弘舸
Owner INST OF APPLIED ELECTRONICS CHINA ACAD OF ENG PHYSICS
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