The Development Of The Multi-functional Temperature Detection System Based On Wireless Transmission

\With the development of electronic technology,digital communication technology and digital modulation techniques, the manufacturing process of the RF circuit and low power circuit were promoted correspondly. Wireless temperature detection system of which is with temperature and humidity detection and wireless communications is developed in this paper to solve the problems of wiring and detecting. And it would have a good prospect in the field of wireless communication.Hardware circuit ,software program and upper machine interface of wireless temperature detection system was introduced in this paper. Data acquisition module and data receiving module were designed as part of the hardware circuit. STC89C52 micro-controller and NRF905 was applied to acquisit, receive and send the temperature and humidity data wirelessly.RS232 interface circuit was used to communicate with the upper machine. The control of the wireless data acquisition, receive and sending were achieved by programming. Finally, debugging and experiment were done after the design of upper machine interface.Because its reliability and easy to extend while its high speed transmission of data, the system could be applied to diffierent kind of fields. And the measuring precision and the stability of the overall wireless temperature detection system were proved by field experiment.