Development of a wifi data logger system for wireless environmental monitoring

A multiple sensors system that used wireless sensing was designed and implemented for monitoring many parameters of the environment on the greenhouse. In the agricultural sector, sensors are used to collect air temperature and air humidity, soil moisture, and the intensity of sunlight inside the greenhouse. The measurement results were sent to a Raspberry Pi which works as a coordinator in a wireless sensor network. The data collected from the sensor node was stored in a local database and analyzes. The Raspberry Pi used WiFi (belongs to of IEEE 802.11g family, operating at 2.4GHz) standard protocol for communication with a router and used wired connection for sensors. A website interface application was designed for experiments and shown the measurement results on the greenhouse. The proposed system could be used to monitor multiple agricultural data on the greenhouse with highly exacting results.