公开(公告)号：US11215554B2

公开(公告)日：2022-01-04

申请号：US16880067

申请日：2020-05-21

Applicant: Tsinghua University

Inventor： Xiao-Ping Zheng ,  Shan Zhang ,  Hua Geng ,  Xiao-Jiao Deng ,  Jia Li ,  Zhi-Jie Li

IPC: G01N21/35 ,  G01N21/05 ,  G01J3/02 ,  G01N21/3504 ,  G01N21/3581

Abstract: A gas detecting apparatus and a gas detecting method based on terahertz spectroscopy are provided. The apparatus includes a sample chamber allowing a terahertz wave to pass therethrough; a gas feeding unit connected to the sample chamber to feed gas into the sample chamber; a gas outputting unit connected to the sample chamber to output gas from the sample chamber; and a vacuum pump connected to the sample chamber to evacuate the sample chamber. The apparatus further comprises one or more of a pressure gauge disposed on the sample chamber, an anemometer disposed on the sample chamber, a humidity regulation device connected to the sample chamber, and a temperature regulation device connected to the sample chamber.