Wearable and Implantable Body Sensor Networks, International Workshop on (2009)
June 3, 2009 to June 5, 2009
DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/BSN.2009.28
One of the main challenges in developing wireless biometric sensors is the requirement for integration of various systems into a very compact device. Such systems include sensing units, conditioning electronics, transmitters and power supplies. In this work, a novel system integration architecture is presented. A unique feature of this new architecture is that the sub-systems are selected and designed for direct output-to-input connection. An array of active pH sensors is used to transform a pH level to an electrical potential in the range of 0 - 2 Volts. This signal is amplified by an electrostatic energy harvester suitable for human motion operation. The amplified signal drives a custom LC transmitter specially designed to suit the harvester output. A system of notable simplicity is achieved and may serve as a demonstrator for other wireless sensors.
Electrostatic, energy harvesting, microelectromechanical system (MEMS), power scavenging, pH sensor
D. Yates, E. Yeatman, D. O'Hare, C. He, M. Kiziroglou and A. Arora, "MEMS Energy Harvesting Powered Wireless Biometric Sensor," 2009 Sixth International Workshop on Wearable & Implantable Body Sensor Networks Conference (BSN 2009)(BSN), Berkeley, CA, 2009, pp. 207-212.