LATERAL ROLL IRRIGATION MACHINE HAVING REMOTE END CONTROL

摘要

A lateral roll irrigation system is described having a central drive unit for propelling the system over a field in which the operation of the drive unit is controlled from an operators console at one end of the system. The power unit has an internal combustion engine that is started by a starter. The engine has a choke. The RPM of the engine is monitored by a tachometer. The power unit utilizes a hydraulic transmission system for moving the irrigation system in either direction. The irrigation system has a remote operational control subsystem which includes the remote control console for sequentially starting the engine and moving the irrigation system in either direction. The operational control subsystem includes a digital-to-analog converter at the remote console for transmitting an analog signal over a single conductor extending from the console to the drive unit. The transmitted analog signal is converted at the power unit to discrete digital signals which are processed by a logic switching network to sequentially perform the desired manipulative steps intended by the operator.