Recognizing frequency characteristics of gas sensor array
- Author:
Jipeng LIN
;
Junhua LIU
- Publication Type:Journal Article
- Keywords:
gas sensor array;
independent component analyzing;
impulse response;
cross-sensitivity
- From:
Journal of Pharmaceutical Analysis
2007;19(2):126-130
- CountryChina
- Language:Chinese
-
Abstract:
A novel method based on independent component analyzing (ICA) in frequency domain to distinguish the frequency characteristics of multi-sensor system is presented. The conditions of this type of ICA are considered and each step of resolving the problem is discussed. For a two gas sensor array, the frequency characteristics including amplitude-frequency and phase-frequency are recognized by this method, and cross-sensitivity between them is also eliminated. From the principle of similarity, the recognition mean square error is no more than 0.085.
