Impulse excitation electromagnetic resonance safety inspection method and device

Abstract

This invention is based on electromagnetism lossless measurement theory and provides an impulse exciting electromagnetism resonance safety measurement method and its apparatus and belongs to electromagnetism lossless measurement technique field. This invention adopts transient high-energy impact excitation loop and establishes an attenuation resonance magnetism field. The detection loop is used to feel space magnetism field excitation and is connected with the alarming circuit through signal process circuit.

Description

technical field [0001] The invention belongs to the technical field of electromagnetic nondestructive testing. Background technique [0002] There have been many patents for safety inspection applied at home and abroad, but most of them use the high transmission characteristics of X-rays or γ-rays, such as a γ-radioactive safety detection device disclosed in the Chinese patent application No. The highly integrated low-energy X-ray array sensing device disclosed in Chinese Patent No. 99100298.9, the multifunctional industrial X-ray imaging system disclosed in Chinese Patent Application No. 99113199.1, and the portable X-ray fluoroscopy recorder disclosed in Chinese Patent No. 90103530.0 Wait. Some of these patents have been transformed into mature products, such as security inspection devices widely used at the entrances of stations, docks, airports and other places. These devices all use X-ray fluoroscopic imaging technology. In addition to the complex structure and high co...

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Problems solved by technology

Some of these patents have been transformed into mature products, such as security inspection devices widely used at the entrances of stations, docks, airports and other places. These devices all use X-ray perspective imaging technology. It will also cause certain harm and damage to organisms and photosensitive materials such as film during normal work.

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