Agricultural Irrigation System Control and Data Communications for Real-time Variable Water Application
نویسنده
چکیده
A multi-microprocessor based distributed control system manages spatially variable water and chemical application. The microprocessors are networked together using 3120 processors and PLT-20 transceivers in a master slave configuration. The control units consist of an 8051 I/O processor and a 3120 communications processor that communicate over a half mile 480VAC three phase power cable. The power line communications used single phase to ground coupling. The control system was tested from May through July 1996 on a 1⁄4 mile center pivot irrigation system in Southern Idaho. A power system transient simulation helps to explain field observations.
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