A channel type hazardous liquid detection device and method
A detection device and channel-type technology, which is applied in measurement devices, geophysical measurements, instruments, etc., can solve the problems of complex operation, low efficiency, and inability to continuously detect, and achieve the effect of improving recognition accuracy and reducing costs.
Active Publication Date: 2019-12-10
THE FIRST RES INST OF MIN OF PUBLIC SECURITY +1
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However, this kind of equipment is based on the third-generation CT scanning mode of industrial CT. The system operation needs to manually put the liquid into the detection chamber. After the detection is completed, the liquid needs to be manually taken out from the detection chamber. The operation is complicated, continuous detection is not possible, and the efficiency is low.
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[0037] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0038] A channel-type dangerous liquid detection device, such as figure 1 , 2 As shown, it includes a perspective scanning detection device 1 , a linear tomographic scanning detection device 2 and a processing and control unit 3 . The perspective scanning detection device 1 includes a perspective scanning X-ray source 11 and a perspective scanning detector 12 for obtaining a perspective view of the liquid in the container 5 on the conveyor belt 6; the linear tomography detection device 2 includes a linear tomography X-ray source 21 and a linear tomographic detector 22 for acquiring linear tomographic data of the liquid in the container 5 . The processing and control unit 3 performs data rearrangement and data compensation on the linear tomographic data to obtain projection data of the liquid in the container, and reconstructs a tomographic image of a ...
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The invention relates to a channel-type dangerous liquid detection device and method. The device includes a perspective scanning detection device, a linear tomography detection device and a processing and control unit. The perspective view of the liquid in the container on the conveyor belt is obtained by the perspective scanning detection device, the tomography data of the liquid in the container is obtained by the linear tomography detection device, and the processing and control unit performs data rearrangement and data compensation on the linear tomography data. Obtain the projection data of the liquid in the container, use the dual-energy reconstruction algorithm to reconstruct the tomographic image of a certain position of the liquid, and calculate the high and low energy attenuation coefficients, effective atomic number and electron density, and judge the contents of the container by comparing these four indicators with the threshold. Whether the liquid is a hazardous liquid. The detection device of the present invention can perform continuous detection, has low detector cost, and improves the identification accuracy of dangerous liquids by compensating for missing projection data and judging whether the liquid is a dangerous liquid based on four indicators.
Description
technical field [0001] The invention belongs to the technical field of safety inspection of dangerous goods, and relates to a channel-type dangerous liquid detection device and method. Background technique [0002] Dangerous liquid detection technology includes X-ray detection technology, neutron detection technology, electromagnetic detection technology and vapor trace detection technology. However, due to the unique characteristics of liquids, the detection is more difficult and complex. For example, the physical properties of many dangerous liquids are very close to those of daily safe liquids, which will inevitably increase the difficulty of liquid detection. [0003] Common liquids are usually packaged in a sealed container, and the liquid molecules are difficult to volatilize out of the package. When using vapor trace detection technology to detect liquids, it is usually necessary to open the bottle for detection, which increases the difficulty of detection operations....
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IPC IPC(8): G01V5/00
CPCG01V5/226G01V5/22
Inventor 李斌李保磊陈学亮李蒙张耀军郭双茂莫阳陈力李永清张萍宇王海鹏刘斌孟博张福曹琴琴
Owner THE FIRST RES INST OF MIN OF PUBLIC SECURITY