Strong electromagnetic pulse multi-level protection device

Abstract

The invention discloses a strong electromagnetic pulse multi-level protection device and belongs to the field of electromagnetic pulse protection. The device disclosed in the invention comprises a phase line L, a neutral line N, a ground line PE, a pre-stage transient processing module, a post-stage transient processing module and a steady-state filtering module. The phase line L is sequentially connected to the pre-stage transient processing module, the steady-state filtering module and the post-stage transient processing module. The neutral line N is sequentially connected to the pre-stage transient processing module, the steady-state filtering module and the post-stage transient processing module. The ground line PE is connected with the pre-stage transient processing module and the post-stage transient processing module. The multi-level protection device disclosed in the invention can be used for delaying fast pulses, reducing rising edge time of the fast pulses, and ensuring thatsufficient time is left for a back stage system to process the pulses; functions of electromagnetic pulse protection equipment are integrated, and therefore the protection device can be adapted to a variety of application scenarios; excellent protection effects can be exerted on systems low in endurance capacity.

Description

technical field [0001] The invention belongs to the field of electromagnetic pulse protection, and relates to a multi-stage protection device for strong electromagnetic pulses. Background technique [0002] In modern society, various electromagnetic pulses generated by nature and man-made, such as lightning electromagnetic pulse, nuclear pulse (high-altitude nuclear electromagnetic pulse), high-power microwave, ultra-wideband, internal surge, clutter harmonics and Strong electromagnetic pulse interference, etc., the interference is more and more frequent, and damages sensitive electronic systems and equipment through the ultra-strong transient pulse generated; with the development of science and technology, advanced electronic equipment uses large-scale integrated circuits in large quantities The larger the size, the more sensitive the electronic device and the more likely it is to be disturbed by electromagnetic pulses. Therefore, it is imperative to carry out comprehensiv...

AI Technical Summary

Problems solved by technology

[0003] Existing protective equipment can be divided into power supply, data and antenna feeder according to their functions, and the power supply can be further divided into DC and AC. However, these protective equipment often have certain limitations and can only protect specific energy or spectrum. (Waveform) electromagnetic pulse protection, especially for fast pulses with a short rising edge time, cannot achieve a comprehensive protection effect, and the protection efficiency needs to be further improved; if the requirements for comprehensive protection of the system and equipment are to be met, it must be in each system 1. A single-function electromagnetic pulse protection module, lightning protection module and EMI filter module are installed in the equipment. If these equipment are installed at the same time, the weight and size will be greatly affected, which is not conducive to the performance of the system and equipment.

However, in modern electronic technology, various systems and equipment require miniaturization, integration, and light weight, so the above protection scheme is not very practical

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