Abstract: A data acquisition system for agricultural meteorological IOT based on STM32 processor is proposed, including microprocessor, power-supply module, sensors, GPS&GPRS, Flash memory and LCD touch screen. Experiments and demonstrations are conducted in 56 cities and counties of Anhui province. The results show that the monitoring system is operating stably; the collected data are complete and there is no obvious packet loss; the trend of data changing is consistent with the local agro-meteorological information, and it has a small deviation to the test results that using laboratory-standard instruments. The system can accurately monitor the agricultural meteorological conditions at the agricultural production site.

Key words: IOT, agricultural meteorology, embedded system