Design of temperature controlled micro-hotplate for CMOS CO sensor
2008
A novel design for the temperature control of a micro-hotplate gas sensor is presented. Finite difference algorithm is developed to solve the sensor temperature stability problem under ambient air interference. A simple circuit is proposed to accurately adjust the micro-hotplate temperature with a resolution of 0.04degC. The proposed sensor has ultra low power consumption (about 13.9 muW) and is a good candidate for wireless sensor network applications.
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