28-01-2010, 11:32 PM
This project ËœRemote sensing and control of an irrigation system using a distribution wireless sensor networkâ„¢ .water management is a major concern in many cropping systems in semiarid and arid areas. Distributed in-field sensor-based irrigation systems offer a potential solution to support site-specific irrigation management that allows producers to maximize their productivity while saving water. This project describes details of the design and instrumentation of variable rate irrigation, a wireless sensor network, and software for real-time in-field sensing and control of a site-specific precision linear-move irrigation system. Field conditions were site-specifically monitored by two in-field sensor stations distributed across the field based on a soil property map, and periodically sampled and wirelessly transmitted to a base station. An irrigation machine was converted to be electronically controlled by a microcontroller and wirelessly communicates with a computer at the base station. Communication signals from the sensor network and irrigation controller to the base station were successfully interfaced using low-cost RF transmitter & receiver . In field microcontroller interface with ADC. Temperature sensor connected with ADC. Microcontroller power will get from solar panel & battery, RF transmitter & receiver connected with microcontroller, this project offered stable remote access to field conditions and real-time control and monitoring of the variable-rate irrigation controller.