The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 18, 2023
Filed:
May. 11, 2021
Xi'an Jiaotong University, Shaanxi, CN;
Xiaohua Wang, Shaanxi, CN;
Dawei Wang, Shaanxi, CN;
Aijun Yang, Shaanxi, CN;
Mingzhe Rong, Shaanxi, CN;
Jianbin Pan, Shaanxi, CN;
Xianbo Huang, Shaanxi, CN;
Jifeng Chu, Shaanxi, CN;
Huan Yuan, Shaanxi, CN;
XI'AN JIAOTONG UNIVERSITY, Xi'an, CN;
Abstract
The present invention discloses a measuring method for a semiconductor gas sensor based on alternating-current impedance. The method includes the steps: connecting the semiconductor gas sensor to a capacitor in parallel, connecting an alternating-current impedance measuring device to the semiconductor gas sensor and the capacitor, combining measuring parameters under measuring frequencies within a first preset range and parallel capacitance values within a second preset range, and measuring a gas with a known concentration according to each of nine features under each combination; traversing all parameter combinations and all the nine features to obtain a plurality of feature values corresponding to the same gas concentration under each feature; and selecting measuring frequencies within a third range, parallel capacitance values within a fourth range and a certain or several of the corresponding features as measuring parameters finally selected for measuring an unknown gas concentration.