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:
Dec. 18, 2018
Filed:
Dec. 02, 2015
Applicant:
Air China Limited, Beijing, CN;
Inventor:
Qixiang Li, Beijing, CN;
Assignee:
Air China Limited, Airport Industrial Zone, Shunyi District, Beijing, CN;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 29/14 (2006.01); G01M 7/00 (2006.01); G01N 29/46 (2006.01);
U.S. Cl.
CPC ...
G01M 7/00 (2013.01); G01N 29/14 (2013.01); G01N 29/46 (2013.01);
Abstract
A testing equipment of an airplane air conditioning system is disclosed. The test equipment includes a sound receiver and a sound processor. The sound processor processes running noise of airplane air conditioning system sampled by the sound receiver to assess the operative condition of the system. The sound receiver samples environmental noise when the airplane air conditioning system is not running, and the sound processor de-noises the running noise by using the environmental noise.