A high-precision scanning mine detection device and scanning detection method

Abstract

The invention discloses a high-precision scanning mine detection device and a scanning detection method, and particularly relates to a device for judging existence of landmines and precisely locatingthe landmines through a PGNAA (Prompt Gamma-Ray Neutron Activation Analysis) technology. The high-precision scanning mine detection device is composed of a neutron source item system, a detection system, a shielding protection system and an energy spectrum analysis system, wherein the neutron source item system is used for exciting nitrogen feature gamma rays in a landmine sample, detectors collect the gamma rays and measure the energy spectrum, the shielding protection system of the detectors is made of a boron-containing polyethylene material, the activation interference of the detectors isreduced, and meanwhile, neutron damage of the detectors is lowered. According to the high-precision scanning mine detection device, the signal-to-noise ratio is regarded as a device design evaluationcriterion, the overall scanning mine detection device is designed based on a novel device evaluation optimization method, the signal-to-noise ratio is high, and the measurement level is improved; meanwhile, a novel scanning method is utilized for mine detection, the measurement time is shortened, and the precision of position detection of the landmines is improved at the same time.

Description

technical field [0001] The invention belongs to the technical field of element detection, and in particular relates to a high-precision scanning mine detection device and a scanning detection method. Background technique [0002] The buried landmines left over from the war have a huge impact on public life and safety. Their detection and cleaning has long been one of the social concerns. How to quickly and effectively detect dangerous explosives buried in the environment and clean them up in a timely manner is an urgent problem to be solved. . At present, the core equipment used in the most commonly used mine detection devices is a metal detector, which uses metal detection technology to determine the existence of explosives by detecting the metal shell of buried mines in the environment. [0003] At present, in the field of analysis and detection, PGNAA technology is a new type of detection technology. Its principle is mainly to use neutrons to bombard the target nucleus o...

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Problems solved by technology

[0004] At present, mine detection devices based on metal detection technology can only judge landmine explosives based on the existence of metal shells, and the false alarm rate is high, so it cannot detect non-metal shell mines; and due to the limitation of its penetration distance, It cannot detect the explosives of deep buried mines well; and its scanning time is long, and the detection is more cumbersome

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