Journal
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
Volume 60, Issue 2, Pages 372-384Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TIM.2010.2084230
Keywords
H-2 acquisitions; Intelligent Sensor InterFace (ISIF); mixed-signal integrated circuit (IC); NOx acquisitions; sensor fusion; sensor signal conditioning; zero-emission vehicles
Funding
- Tuscany Region project H2 Filiera Idrogeno
- Ministero Istruzione Universita Ricerca Fondi Investimenti Ricerca di Base
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This paper addresses the detection of hydrogen leaks for safety warning systems in automotive applications and the measurement of nitrogen oxide concentration in exhaust gases of zero-emission vehicles. The presented approach is based on the development of accurate models (including nonlinearity and error sources of real building components) for all the system elements: sensors and acquisition chain. This methodology enables efficient design space exploration and sensitivity analysis, allowing an optimal analog-digital and hardware-software partitioning. Such analysis drives also the development of effective data fusion techniques to reduce the measure uncertainty (due to cross-sensitivity to other gases or to temperature/humidity variations). Such techniques have been implemented on a microcontroller-based mixed-signal embedded platform for intelligent sensor interfacing with limited complexity, suitable for automotive applications.
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