由于现有无线传感器节点采用的单片机运行速度慢和程序存储空间小， 影响了节点功能的扩

展， 本系统以 STC12C5A60S2 单片机为核心部件， 利用无线数字传输芯片 nRF24L01 和温度采集芯片

DS18B20 构成了无线数据传输系统． 重点讨论了系统的硬件和软件设计要点， 给出了硬件接口电路，

控制系统的主程序流程， 以及主要程序代码． 运行表明， 该系统控制方便 工作稳定， 能实现可靠的无

线数据传输．-Since the existing wireless sensor nodes using microcontroller running slow and program storage space is small, the impact of node extend the capabilities of the system STC12C5A60S2 MCU as the core components, the use of wireless digital transmission chip nRF24L01 chip DS18B20 temperature acquisition and constitutes wireless data transmission systems. Focused on the system' s hardware and software design elements, given the hardware interface circuit, the main program flow control system, and the main program code. Operation shows that the system is stable and easy to control, to achieve reliable wireless data transmission.