Design of Granary Temperature and Humidity Monitoring System Based on STM32 and Multi-Sensor Data Fusion
To improve the monitoring and control capacity of granary temperature and humidity, sensors were evenly deployed around the ventilation opening of granary to detect the temperature and humidity with the cell of DHT11 per 10 m, and then the determination d
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Design of Granary Temperature and Humidity Monitoring System Based on STM32 and Multi-Sensor Data Fusion Tao Wang, Defang Zhao, Xin Zhang, Lili Wang and Li Ding
Abstract To improve the monitoring and control capacity of granary temperature and humidity, sensors were evenly deployed around the ventilation opening of granary to detect the temperature and humidity with the cell of DHT11 per 10 m, and then the determination data were fused by adopting the self-adaptive weighed fusion algorithm. The granary temperature and humidity monitoring system based on STM32 and multi-sensor data fusion reduced the complexity of system hardware design, improved the accuracy of measurement results, and controlled the temperature and humidity according to the detection results. The system could effectively monitor and control the temperature and humidity of granary, create a suitable environment of food stored, and to improve the quality of food preservation. Keywords STM32 DHT11
Data fusion Temperature and humidity measurement
16.1 Introduction The food storage is the effective measures taken by countries to prepare for war, famine or other unexpected events, so the food storage is important. The main parameters of the impact of food security, storage temperature and humidity of the grain, between the two are interconnected relationship. Normal stored procedure, the grain moisture content is generally 12 % of what is safe, does not occur to T. Wang (&) D. Zhao X. Zhang L. Wang L. Ding Airforce Logistics College, Xuzhou, China e-mail: [email protected]
Y. Yang and M. Ma (eds.), Proceedings of the 2nd International Conference on Green Communications and Networks 2012 (GCN 2012): Volume 4, Lecture Notes in Electrical Engineering 226, DOI: 10.1007/978-3-642-35440-3_16, Springer-Verlag Berlin Heidelberg 2013
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sudden changes in temperature, food water, condensation the moisture content above 20 %, grain moisture, embryo germination, speedup metabolism arising from the grain temperature and may result in incalculable losses. The author for the distribution of temperature and humidity within the warehouse, based on the STM32 design warehouse temperature and humidity monitoring system using multiple sensors to monitor temperature and humidity in the warehouse, according to test results on the temperature and humidity control, in order to improve the storage temperature and humidity monitoring and control capabilities.
16.2 System Design Evenly arranged in the region away from the vents in the warehouse six sensors to detect different regions of temperature and humidity, and the detection value of data fusion to improve the accuracy and comprehensiveness of the test results, the fusion temperature and humidity values by LCD, and compare the detected value and the default value, to make appropriate judgments based on the results of the comparison to control the working status of the relay, and then control the air conditioners, dehumidifiers, air turbulence and other equipment, the warehouse tempe
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