Design of Wireless Temperature &Humidity Sensor Based on NRF24L01

According to the development of the Internet of things, a wireless cognitive transducer based on humidity-sensitive capacitor was designed. The ambient temperature and humidity are measured by temperature &humidity transducer which transfers the capacity into frequency signal with the help of RC oscillation, followed by the frequency with MSP430 SCM and the humidity accordingly. Thermal sensitive resister of the negative temperature system is used to measure the temperature. When measuring, the humidity can be compensated by temperature data, thus ensuring higher precision and stability of humidity measuring. The measured data are sent out by NRF24L01 through communication protocol to accomplish distant data collection of temperature and humidity, which foretells a bright prospect.