A temperature monitoring system with a monobus temperature sensor DS18B20, and nRF401 wireless communication module for data transmitting is introduced in this paper. A number of temperature sensors is controlled by MCU, and data is transmitted through the wireless RF technology to the monitoring central in hospital, so that the real-time monitoring of body temperature is re-alized. A number of advantages is included in this system: long-term real-time monitoring、auto-locking temperature、reducing times of c...