Nuctech Company Limited

Tsinghua University

Zhuoyan Liu

Zhiqiang Chen

Yuanjing Li

Huaping Tang

Yonggang Wang

Zhanfeng Qin

Li Ni Zhang

Ziran Zhao

Xin Jin

Hua Peng

Yingxin Wang

Bing Feng

Yinpeng Liang

An X-ray product quality automatic inspection device of the present invention comprises: a distributed X-ray source having a plurality of targets and being able to generate X-rays for irradiating an inspected product from the plurality of targets in a predetermined sequence; a detector for receiving the X-rays generated by the distributed X-ray source and outputting a signal representing characteristics of the received X-rays; a transport device for carrying the inspected product to pass through an X-ray radiation region; and a power supply and control device, which is used to supply power to and control the X-ray product quality automatic inspection device, to form characteristic information of the inspected product according to the signal from the detector and to provides an inspection and analysis result of the inspected product according to the characteristic information.

X-ray product quality automatic inspection device

Embodiments of the present invention provide a trailed multiple-viewing-angle item inspection system and method of operating the same. The inspection system includes: a trailer vehicle, a radiation inspection device, a power supply device and a power grid connection device. The trailer vehicle is mounted with a power supply chamber within which a power supply device and a power grid connection device are mounted and an inspection chamber within which a radiation inspection device is mounted. The radiation inspection device includes: ray radiation source configured to emit X-rays from various positions, detectors, a body frame, a transfer device, a data and image process system and a display and operation device. The trailed multiple-viewing-angle item inspection system of the present invention can obtain a transmission image containing depth information of an item by its one pass through the device, and achieve a high-speed inspection, a good image quality and a high inspection efficiency of hazardous articles, and its flexibility and movability can meet requirements in various working conditions.

Trailed multiple-viewing-angle item inspection system and method of using the same

An X-ray product quality online inspection device of the present invention comprises: a distributed X-ray source having a plurality of targets and being able to generate X-rays for irradiating an inspected product from the plurality of targets in a predetermined sequence; a detector for receiving the X-rays generated by the distributed X-ray source and outputting a signal representing characteristics of the received X-rays; a transport device which is located between the distributed X-ray source and the detector for carrying the inspected product to pass through an X-ray radiation region, wherein the transport device is arranged as a continuous transport mechanism which matches a production line of the inspected product; and a power supply and control device, which is used to supply power to and control the X-ray product quality online inspection device.

X-ray product quality online inspection device

The present invention relates to a method for assessing the purity of vegetable oils by means of THz time-domain spectroscopy, comprising the steps of: measuring the THz time-domain spectra of standard vegetable oils to establish a spectral database; measuring the THz time-domain spectrum of vegetable oil to be detected; analyzing the purity of the detected vegetable oil based on the pre-built database. The present invention also relates to an apparatus for assessing purity of vegetable oil by means of THz time-domain spectroscopy, comprising: spectrum measuring device for measuring time-domain waveforms of THz pulses before and after transmitting the vegetable oil held in a container by transmission approach, or directly measuring time-domain waveforms of THz pulses before and after reflecting from the vegetable oil by reflection approach; and data processing device for extracting physical parameters of the vegetable oil in THz region according to the time-domain waveforms. Compared with the prior art, the method according to the present invention is easy, rapid and quantitative.

Method and apparatus for assessing purity of vegetable oils by means of terahertz time-domain spectroscopy

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Beijing, China

Zhuoyan Liu