Single-source low-energy X-ray backscattering and transmission human body detection equipment

Abstract

Provided is a single-source low-energy X-ray back scattering and transmission human body detection device. An asymmetrical wide fan-shaped angle X ray source and a fan-shaped front collimator are installed outside a detection channel and under one side of a control platform. A geometrical structure for transmission measurement and imaging is formed by a transmission photon beam emitted by the shared X ray source and a transmission detector array. A geometrical structure for back scattering measurement and imaging is formed by a back scattering photon beam emitted by the fan-shaped transmission photon beam through an object to be measured and a back scattering detector array. A radiation shielding layer is arranged between the back scattering detector and the transmission X ray beam, a controllable multi-vane light bar is installed at a ray outlet, and all measurement and control can be finished by one industrial personal computer. The device utilizes the scanning technology combining back scattering and transmission, and is simple in structure, low in price, high in detection speed, high in sensitivity, small in human tolerant dose, free of individual privacy exposure, capable of detecting bombs, explosives, poisons and the like which are hidden in vests and underpants of a human body and suitable for large public safe sites.

Description

1. Technical field [0001] The invention relates to an X-ray safety detection system, in particular to single-source low-energy X-ray backscattering and transmission human body detection equipment. 2. Background technology [0002] X-rays are used to detect the safety of the human body in two ways: transmission and backscattering. [0003] 1. Simply adopting the method of transmission, this method makes the radiation dose to the subject subject to a large amount, and the effect is not good. The No. 3 Research Institute of the Ministry of Public Security and the Yunnan Public Security Bureau cooperated with the X-ray transmission method for human body detection, and its equipment has been put into use in the field in China. After processing, the amount of energy received by the detector is displayed in grayscale images. This method is difficult to detect contraband such as vest bombs, pants bombs, explosives and drugs hidden in the human body and shoes, and has great limitati...

AI Technical Summary

Problems solved by technology

The United States has recently developed and produced backscatter human body inspection equipment. In 2010 alone, 78 airports in the United States will install 450 sets. The structure is complex, the detection speed is slow, and the time to detect a person reaches 10 seconds, and the price is expensive, so it is not suitable. China's national conditions make it difficult to promote and apply in developing countries

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