The Design and Implementation of High Precision and Low Power Wireless Temperature Sensor

This paper presents a design method of high precision wireless temperature sensor, the sensor consists of 16 high-performance low-power processor MSP430F149, Sub-1G RF transceiver chip SI4432, four-wire positive temperature coefficient temperature sensitive resistor PT100, the high resolution of AD conversion chip ADS1246 and other core components, temperature range -40 °C ~ 80 °C , resolution 0.01 °C . The sensor can be collected if the temperature information stored locally or transmitted in real time to the control terminal, effectively overcome the wired sensor in the measurement limitations. In view of the technical characteristics of Sub-1G, the design method of high precision wireless temperature sensor in performance and power consumption is discussed. Keywords-low power high precision