A High Precision, Wireless Temperature Measurement System for Pervasive Computing Applications.

摘要: This paper describes the design and calibration of a highly accurate temperature measurement system for pervasive computing applications. A negative coefficient (NTC) thermistor with high resistance tolerance is interfaced through conditioning circuit to 12-bit digital converter wireless microcontroller. The calibrated minimize effect component uncertainties achieves an accuracy ±0.03 °C on average (±0.05 in worst cases) 5 45 range. process based continuous sweep, while data are simultaneously logged reduce delays cost conventional approaches. An uncertainty analysis performed support validity reported performance results. described approach interfacing hardware platform can be straightforwardly adjusted different thermistors, ranges/accuracy levels/resolutions, voltage ranges. low power communication combined energy consumption optimization adopted enable operation autonomic several months years depending application's frequency requirements. approximately $45 USD components, its compact size allow integration extended monitoring systems various environments. has been thoroughly tested validated field trial concerning precision agriculture application currently used health application.