基于NRFL模块的多点温度监测系统设计.doc

基于NRF24L01模块的多点温度监测系统设计 作者姓名： 专业班级： 指导老师： 摘要 温度在人们的日常生活中起着非常重要的作用,人们不但关注日常环境温度的变化，在许多领域的产业化，如工业、医疗、军事和生活等许多地方，都需要用到测设备来检测温度。传统直接布线测量电路很复杂，容易受干扰，准确性也不高，不满足某些环境非常恶劣的工业环境和某些户外环境。因此，选择一个性能不错的数字温度传感器和无线传输模块，简单的使用显得尤为重要。在现代的工业控制，考虑到功耗问题也是一个重要的参数，该系统采用低耗高性微型控制器STC89C52RC和DS18B20温度传感，采用nRF24L01无线模块对温度进行短距离监控。 本次设计采用的STC89C52RC简单实用，与MCS-51操作相同。无线数据通信收发芯片NRF24L01是一款工作在2.4?2.5GHz功率消耗非常低的低成本无线收发器。另外温度传感器DS18B20具有体积小，成本低，精度高等优点。 该系统功耗低，成本低，硬件电路简单，是一种可行的无线测温的设计方案。 关键词：NRF24L01；温度传感器DS18B20；STC89C52RC Abstract Temperature plays a very important role in peoples daily life, people pay much attention to the daily change of environmental temperature. In many areas of industry, such as some local factories, hospitals, military and daily life, need to use test equipment to detect temperature. The traditional way of the measurement circuit is very complex, vulnerable to be distracted, and accuracy is not high, does not meet certain harsh industrial environment and some outdoor environment. Therefore, choosing a good digital temperature ,a wireless transmission module and simple to use is particularly important. In the modern industrial control, considering the power consumption is also an important parameter, the system adopts low energy consumption and high performance micro controller STC89C52RC and DS18B20 temperature sensor, and uses nRF24L01 wireless module to transmit the temperature. It is convenient to realize the remote transmission. We have adopted STC89C52RC to design this system. It’s pins and kernel are same to the MCS - 51 series. NRF24L01 wireless data communication transceiver chip is a very low power consumption and low-cost wireless transceiver, which works in 2.4 ~ 2.5 GHz. Additional temperature sensor DS18B20 is very small ,and has a low cost, high accuracy. Unique line interface effectively improves the anti-interference of the system. The system is simple, reliable and has low power consumption, low cost. It is an effective and trustworthy solution to a wireless