基于Cortex—M3智能无线温度测量系统设计

摘要

设计了一种基于Cortex—M3内核的STM32F103RBT6为核心处理器的智能无线温度测量系统。系统采用DS18B20数字温度传感器，并利用TC35I模块接入GSM网络，实现利用手机短信发送温度测量指令。手机短信接收测量数据，该系统同时具有定时自检和温度报警功能，当处理器定时自检发现DS18B20出现故障时，系统会自动启用处理器内部温度传感器并短信报警。经实验证明，该系统测量精度最高可达0．0625度，适合在距离较远，不易布线的环境下使用。%A system uses STM32F103RBT6 processor which based on Cortex-M3 core. By using DS18B20 to measurement the temperature and using TC35I module to connect to the GSM network, It achieves a function that using short message to send commands and receiving the measurement data by short message. The system also has a self-test function, when the processor found the DS18B20 fails, it will automatically enable internal temperature sensor and send alarm message. It is suitable for long distance condition with a high precision.