esign and Realization of Digital W ireless Temperature Sensor Based on IA44 ZHANG Kefan，ZHANG Shuhua，TU Qiang，LI Ying (School of Information Science and Engineering，Yunnan University，Kunm ing，650091，China) ct：The digital wireless temperature sensor based on ATmega 324p of Atmel Company，digital temperature se chip RF transceiver IA4421 are introduced，433 M Hz ISM does not need application．temperature measure b g power 0．062 5℃ ，operating frequency 433 MHz，receiving sensitivity 一 109 dBm，the most transmit p distance 200 m，battery power supply．The hardware interface and low po wer software design are analyz sensor can be applied in each contactless occasions，realizing foresight to the temperature． rds：ATmega324p；digital temperature sensor；wireless transceiver；IA4421

RFWD-100芯片.doc

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