Metal-oxide gas sensor array concentration detecting method based on drift compensation

• Main Authors: YE QI, LI GUORUI, HU BO, ZHANG LEI, CHEN JIANJUN, FENG JINGWEI, DANG LIJUN, GUO JIELIAN, XIAO BO, TIAN FENGCHUN, LIU TAO
• Format: Patent
• Language: Chinese; English
• Published: 27.02.2013
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention provides a metal-oxide gas sensor array concentration detecting method based on drift compensation. According to the method, the independent component analysis is utilized, the influence of abnormal values caused by the environment temperature, the environment humidity and environment factors to the drifting regulation and the drifting quantity estimation is shielded, the law that a independent concentration component changes along with the time drifting under the condition of base line responses is found out, subsequently, and when the concentration detection treatment on a gas sample is subjected to the concentration detection treatment by a metal-oxide gas sensor array, the drifting quantity of the concentration independent component is estimated by using the law that the independent concentration component changes along with the time drifting under the condition of the base line responses, so as to carry out drifting compensation on the independent concentration component in concentration de