Abstract：The scheme of the wireless and high-precision temperature and humidity’s intelligent sensor system is determined by the analysis of the functional requirements for meteorological data acquisition system. The overall scheme and the realization of the hardware and software system are introduced in this paper. To realize the function of high-accuracy measurement, automatic collection and real-time processing, we choose the main control chip which is LPC1114 with the ultra low power architecture of ARM Cortex–M0, the 16-bit serial A/D conversion chip AD7792 with low power consumption, the 2.4 GHZ single chip of radio frequency NRF24L01 with ultra Low power automatic response and automatic retransmission function. It compared with existing meteorological data acquisition equipment, with smaller size, lower power consumption, network flexible and higher measuring precision characteristic .The test results show that the high-precision intelligent sensor is stable, reliable, and of high accuracy.
2011, Vol. 28 