Multi-points dynamic temperature measurement and control system based on wireless communication technology

Based on wireless communication technology,a multi-points temperature measurement and control system is designed and implemented.The principle and implementation of this system are illuminated in detail.The lower computer uses P89LPC938 single chip microcomputer as the core,the water temperature is measured in multi-points by using one-wire bus digital temperature sensor DS18B20.The datas are transmitted through the wireless receiving and sending module nRF905;the upper computer received the data by the module nRF905 and the data is transmitted to PC through RS—232 series.The experimental results show that the system can not only measure and control water temperature in multi-points dynamicly,but also realize data transmission by wireless communication technology.It reduces the installation and debugging time effectively and improves the stability of the control system.