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628 IEEE SENSORS JOURNAL, VOL. 2, NO. 6, DECEMBER 2002 Toward a Miniature Wireless Integrated Multisensor Microsystem for Industrial and Biomedical Applications Tong Boon Tang, Erik A. Johannessen, Lei Wang, Alexander Astaras, Mansour Ahmadian, Alan F. Murray , Senior Member, IEEE , Jonathan M. Cooper, Steve P. Beaumont, Brian W. Flynn, and David R. S. Cumming , Member, IEEE Abstract— This paper presents our work toward the integra- tion of a multisensor microsystem with wireless communication, using system-on-chip (SoC) methodology. Four different forms of microelectronic sensors have been fabricated on two separate 5 5mm P silicon chips measuring pH, conductivity, dissolved oxygen concentration, and temperature. The sensors are inte- grated with a sensor fusion chip comprising analog circuitry for sensor operation and signal amplification prior to digital decoding and transmission. The microsystem prototype will be packaged in a miniature capsule, which measures 16 mm 55 mm including batteries and dissipates 6.3 mW for a minimal life cycle of 12 h. Index Terms— Laboratory-on-a-chip (LoC), microsystem, mul- tisensor array, system-on-chip (SoC), wireless communication. I. INTRODUCTION T HERE is a considerable interest in the development of ultraminiature and low-power multisensor microsystems for use in applications such as medical diagnosis [1] and environmental monitoring [2]. Industrial applications in water purification, wastewater analysis [3], and radiation control [4], [5] also have technologically attractive prospects. Such systems must exhibit low-cost production, robustness of use, and real-time data processing. While laboratory-on-a-chip (LoC) and system-on-chip (SoC) methodologies are not new, the integration of the two technologies poses many new research challenges. LoC technology offers low-cost, efficient chemical synthesis and the potential for a full-scale biological and clinical analysis on a single, miniaturized device [6]. Mean- while SoC technology offers an implementation methodology in which a low-power system comprises a set of optimized Manuscript received February 6, 2002; revised October 1, 2002. This work was supported by the Scottish Higher Education Funding Council (RDG 130). The associate editor coordinating the review of this paper and approving it for publication was Prof. Gert Cauwenberghs. T. B. Tang, M. Ahmadian, A. F. Murray, and B. W. Flynn are with the School of Engineering and Electronics, University of Edinburgh, Edinburgh EH9 3JL, U.K. (e-mail: [email protected]; [email protected]; [email protected]; E. A. Johannessen, L. Wang, J. M. Cooper, and D. R. S. Cumming are with the Department of Electronics and Electrical Engineering, University of Glasgow, Glasgow G12 8LT, U.K. (e-mail: e.johan- [email protected]; [email protected]; [email protected]; [email protected]). A. Astaras and S. P. Beaumont are with the Institute for System Level Integra-
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This note was uploaded on 02/08/2010 for the course MECHANICAL 6537 taught by Professor Stiharu during the Winter '10 term at Concordia Canada.

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