：介绍一种以Atmel公司的单片机 ATmega324p为控制核心，结合数字温度传感器DS18B20和 INTEGRAT10N

公 司的无线收发芯 片 IA4421的数 字化 无线温度传感器的设计 。该设计频段(433 MHz ISM)无 需 申请 即可使 用测 温范 围为

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4o～95℃ ，分辨率为 0．062 5℃ ，工作频率 433 MHz，接收灵敏度为 109 dBm，最 大发射功 率 8 dBm，传输距 离 200 m，采和

电池供 电。重点介绍该 系统 的硬件接 口、软 件设 计 以及 低 功耗设 计。该数 -: An introduction to Atmel' s single-chip ATmega324P for the control of the core, combined with digital temperature sensor DS18B20 and INTEGRAT10N' s wireless transceiver chip IA4421 digital wireless temperature sensor design. The design frequency band (433 MHz ISM) not required to apply to the use of temperature measurement range of 1 4o ~ 95 ℃, a resolution of 0.062 5 ℃, operating frequency 433 MHz, receiver sensitivity of 109 dBm, the maximum transmitting power 8 dBm, transmission distance of 200 m, mining and battery-powered. Focuses on the system hardware interface, software design, and low-power design. The number of