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IMTC 2005 Instrumentation and Measurement Technology Conference

Summary: IMTC 2005 Instrumentation and Measurement
Technology Conference
Ottawa, Canada, 17-19 May 2005
Detection of unreliable measurements in multi-sensor devices
Yednek Asfaw, Andy Adler
yasfaw@site.uottawa.ca, Adler@site.uottawa.ca
School Of Information Technology and Engineering (SITE)
University Of Ottawa, Ottawa, Canada
Multi-sensor monitoring devices that use skin surface or
implanted sensors are susceptible to changes in temperature,
sweat, and movement, such that the measured data cannot be used.
This paper presents an automatic approach to detect such
erroneous sensors. It is based on the assumption that valid
measurements are related by a reconstruction model, while
measurements from erroneous sensors are unrelated. The method
estimates the data at each sensor based on the measurements from
all other sensors, and compares it to the measurements. The
sensor-data match is tested using ANOVA to detect the presence of
an erroneous sensor. The method was tested on simulated and


Source: Adler, Andy - Department of Systems and Computer Engineering, Carleton University


Collections: Computer Technologies and Information Sciences