US 11,733,422 B2
Portable terahertz security inspection apparatus
Ziran Zhao, Beijing (CN); Yingxin Wang, Beijing (CN); Meng Chen, Beijing (CN); and Xuming Ma, Beijing (CN)
Assigned to Nuctech Company Limited, Beijing (CN); and Tsinghua University, Beijing (CN)
Appl. No. 17/309,908
Filed by Nuctech Company Limited, Beijing (CN); and Tsinghua University, Beijing (CN)
PCT Filed Oct. 9, 2019, PCT No. PCT/CN2019/110140
§ 371(c)(1), (2) Date Jun. 28, 2021,
PCT Pub. No. WO2020/134320, PCT Pub. Date Jul. 2, 2020.
Claims priority of application No. 201811631709.6 (CN), filed on Dec. 28, 2018.
Prior Publication US 2022/0066065 A1, Mar. 3, 2022
Int. Cl. G01V 8/20 (2006.01); G01V 5/00 (2006.01); G01V 8/00 (2006.01)
CPC G01V 8/20 (2013.01) [G01V 5/0008 (2013.01); G01V 8/005 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A portable terahertz security inspection apparatus, comprising:
a carrying body;
a terahertz emitting device arranged on a top wall of the carrying body, wherein the terahertz emitting device comprises a terahertz signal source and an emitting unit connected to the terahertz signal source and configured to emit a terahertz wave;
a terahertz detector arranged on the carrying body and configured to receive the terahertz wave reflected from an inspected object, wherein the terahertz detector comprises a terahertz lens, a terahertz detection chip and an adjustment flange;
a data acquisition and processing system located within the carrying body and connected to the terahertz detector, wherein the data acquisition and processing system is configured to receive a scan data for the inspected object from the terahertz detector and generate a terahertz image;
a display device connected to the data acquisition and processing system and configured to receive and display the terahertz image from the data acquisition and processing system, wherein the display device comprises a display screen; and
a distance sensor arranged on the carrying body and connected to the data acquisition and processing system, wherein the distance sensor is configured to sense a distance between the inspected object and the portable terahertz security inspection apparatus;
wherein a pre-processed signal acquired by the terahertz detection chip is compensated and optimized by the data acquisition and processing system based on the distance, and the terahertz lens is automatically calibrated by the adjustment flange based on a distance measured by the distance sensor; and
wherein the display device comprises a display base arranged on a second sidewall of the carrying body adjacent to a first sidewall installed with the terahertz lens, the display base is pivotally connected to the carrying body, and the display screen is arranged on a side of the display base close to the carrying body.