Automatic irrigation system based on wireless network

Considering the characteristic of irrigation in the rural area of China, this paper brings forward new devices based on wireless network, that are GSM (Global System Mobile) network and radio communication. Three levels are included in the system: the PC control platform or common cell phone for surveillance, the controller and the action unit. Simple GSM modules are available in the PC control platform and the controller. Orders can be sent from the PC control platform or cell phone to the controller and the information such as temperature, soil moisture and air humidity sampled by the controller can also be sent to the PC platform or cell phone by GSM message. Emitter and receiver of short-wave radio are embedded in the controller and the action unit respectively. Radio communication works between the controller and the action units. Database of spot information sampled can be analyzed and browsed by friendly interface in PC. The devices have been installed in some farms of Mentougou district in Beijing, capital of China, and Xinjiang, northwest of China.