NDLI: Robust sensor systems using evolvable hardware

Content Provider	IEEE Xplore Digital Library
Author	Hereford, J. Pruitt, C.
Copyright Year	2004
Description	Author affiliation: Murray State Univ., KY, USA (Hereford, J.; Pruitt, C.)
Abstract	This paper describes a system that is robust with respect to sensor failure. The system utilizes multiple sensor inputs (three in this case) connected to a programmable device (FPAA) that averages the outputs from the sensors. The programmable device is programmed using evolvable hardware (EHW) techniques. If one or more of the input sensors fails, then the controller detects the failure and initiates a reprogramming of the circuit. The system then continues to operate with a reduced number of sensors. The failure detection is accomplished by comparing the actual system output with a Kalman filter estimate of the output. If the actual output and the filter estimate differ by amount greater than the system uncertainty, then a failure is noted. The system is robust to several different failure modes: sensor fails as open circuit, sensor fails as short circuit, multiple sensors fail, FPAA input amplifier failure. The experimental setup is described as well as results using simulated inputs (individual voltage sources) and actual temperature sensors (PRTDs). The paper also discusses some interesting results as well as issues that must be overcome to expand the system.
Sponsorship	Nat. Aeronautics and Space Administration (NASA) Dept. of Defense (DoD)
Starting Page	161
Ending Page	168
File Size	299390
Page Count	8
File Format	PDF
ISBN	0769521452
DOI	10.1109/EH.2004.1310826
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-06-26
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Robustness Sensor systems Hardware Field programmable analog arrays Sensor phenomena and characterization Filters Uncertainty Circuit simulation Voltage Temperature sensors
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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