Flow control for irrigation machines

A - Human Necessities – 01 – G

Patent

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Details

A01G 25/00 (2006.01) A01G 25/09 (2006.01) B05B 3/00 (2006.01)

Patent

CA 2524844

This invention relates to a fluid flow control method that enables a self- propelled irrigation machine to apply varying amounts of fluid as might be required to suitably treat the surface area affected by each of the individual fluid application devices thereon. The control method regulates the total volume of fluid emitted by each application device to a predetermined value as it responds to a suitable control signal to permit or prevent fluid flow. This fluid flow control method involves time-based rapid cycling of the flow control apparatus to provide continuously variable fluid flow as is required to meet the desired average output of each emitting device as the flow requirement varies from time to time as needed to produce a selected, pre- determined application rate throughout the treated surface area.

Cette invention se rapporte à un procédé de commande des jets qui permet à une machine d'arrosage autopropulsée d'appliquer des quantités variables de liquide d'arrosage selon les besoins afin de traiter de façon appropriée la surface arrosée par chacun des dispositifs d'application de liquide individuels. Ce procédé de commande consiste à réguler le volume total de liquide projeté par chaque dispositif d'application sur des valeurs prédéterminées en réponse à un signal de commande approprié autorisant ou empêchant la projection de liquide. Ce procédé de commande de jets de liquide implique un cycle temporel rapide du dispositif de commande de jets pour produire des jets de liquide variables en continu selon les besoins, afin de satisfaire la puissance moyenne souhaitée de chaque dispositif de projection de jets dès lors que les exigences de débits varient dans le temps, de façon à produire un débit d'application de liquide prédéterminé choisi sur la surface traitée.

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