Biological feature recognition system and biological feature recognition method

Abstract

The invention relates to a biological feature recognition system and a biological feature recognition method. The biological feature recognition system comprises an X-ray detection device and a control device, wherein the X-ray detection device is arranged in a sealed protection box and comprises a base, and a guide rail is arranged on the base; a first displacement table, a second displacement table and a third displacement table are sequentially arranged in the length direction of the guide rail in a sliding mode, an X-ray tube is arranged on the first displacement table, a sample rotary table is arranged on the second displacement table, and a detector is arranged on the third displacement table; the control device comprises a master controller and an X-ray generation control assembly, and the master controller is connected with the X-ray generation control assembly, the sample rotary table and the three displacement tables through cables or in a communication mode. According to the biological feature recognition system, the X-ray tube with the micron focus is adopted as a light source, and the X-ray beam with good spatial coherence is obtained, so imaging detection of a weak absorption biological sample based on phase contrast is realized, and the spatial resolution is improved.

Description

technical field [0001] The invention relates to the field of non-destructive testing equipment, and more particularly relates to a biological feature identification system and a biological feature identification method. Background technique [0002] National biosecurity is crucial to the protection of endangered animal and plant species and the entire ecosystem, and customs is the frontier of biosecurity protection. In recent years, China's import and export of animals and plants has increased year by year, domestic rare animal and plant resources are precious and scarce, and the task of protecting domestic rare animal and plant special biological resources has become increasingly arduous. [0003] Because X-rays have strong penetrability and can obtain internal structure information of samples such as insects and plants, X-ray-based security inspection equipment is widely used in major stations, ports, and airports. Such as Figure 11 As shown, the existing X-ray security ...

AI Technical Summary

Problems solved by technology

When the existing X-ray security inspection equipment is inspected, the position of the sample on the conveyor belt is fixed and cannot be rotated 360°, so it can only take a two-dimensional projection image of the sample at a certain angle, and cannot take the CT of the sample to obtain its three-dimensional Structure, due to the problem of signal stacking in the two-dimensional projection map, it will affect the accuracy of security checks

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