A new method for fault detection of gas sensor

Author

Djamal, M.

Author_Institution

Dept. of Phys., Bandung Inst. of Technol., Indonesia

fYear

1993

fDate

18-20 May 1993

Firstpage

64

Lastpage

69

Abstract

A method of determining the sensor state in a multisensor system is introduced. The method provides a quantitative judgment of the sensor reliability. It is an adaptive method that uses homogeneous and diverse redundancies. The criterion is the change of the correlation of two or more sensors. It is assumed that the sensor has a linear dependency so that a linear model of the sensor can be used. This model would make a cross comparison for every pair of sensors and find three parameters. These are specific for every sensor. By analyzing these parameters the sensor state and its fault condition can be determined. The application of the method is demonstrated

Keywords

digital simulation; fault diagnosis; gas sensors; reliability; sensor fusion; signal processing; adaptive method; correlation; cross sensitivity; fault condition; fault detection; gas sensor; linear dependency; linear model; multisensor system; quantitative judgment; sensor reliability; Aerospace electronics; Fault detection; Gas detectors; Humidity; Intelligent sensors; Phase measurement; Redundancy; Sensor systems; Signal processing; Temperature sensors;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference, 1993. IMTC/93. Conference Record., IEEE

Conference_Location

Irvine, CA

Print_ISBN

0-7803-1229-5

Type

conf

DOI

10.1109/IMTC.1993.382679

Filename

382679