车内线缆的高空核电磁脉冲响应分析

doi:10.16180/j.cnki.issn1007-7820.2020.01.006

Abstract

Abstract:

The in-vehicle electronic equipment in complex electromagnetic environment is subject to the threat of high altitude nuclear electromagnetic pulse, in which electromagnetic effect and protection of built-in cable determine the viability and performance of special vehicles. In this paper, we used the electromagnetic simulation software CST based on FTDT algorithm to establish the electromagnetic model of the vehicle shell and the cable layout model of the vehicle, and to simulate the current and voltage response of the high altitude nuclear electromagnetic pulse in the vehicle cable. The simulation results showed that the response voltage of the twisted pair was larger while the response current was smaller. The response voltage of the coaxial line was smaller while the response current was larger. The response voltage and current of shielded cable were smaller than that without shielding under HEMP. However, there existed a slot in the actual vehicle shell, causing resonance at some frequency points in response to voltage and current, resulting in a larger value of voltage and current. The results of analysis in this paper has certain practical engineering significance for electromagnetic pulse protection of vehicle electronic equipment.

Key words: HEMP, time domain response, vehicle, electromagnetic pulse protection, twisted-pair, coaxial line

CLC Number:

TN973

HU Kuan,XIE Xutong,WANG Wei,ZHAO Nengwu,LU Hongmin. Analysis of High-altitude Nuclear Electromagnetic Pulse Impact on Vehicle Cables[J].Electronic Science and Technology, 2020, 33(1): 29-33.

Figures/Tables 13

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References 17

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标准	α/s^-1	β/s^-1	k	t_r/ns	^$\tau$_FWHM /ns	j /J·m^-2
1976 Publication	1.5E6	2.6E8	1.04	7.8	483	2.350
Bell Lab	4.0E6	4.76E8	1.05	4.1	184	0.891
DOD-STD- 2169	3.0E7	4.76E8	1.285	3.1	31	0.151
抗辐射加固新标准	1.0E7	3.4E8	1.15	5	80	0.401
IEC6100-2-9	4.0E7	6.0E8	1.30	2.5	23	0.114

Analysis of High-altitude Nuclear Electromagnetic Pulse Impact on Vehicle Cables

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