Data processing: generic control systems or specific application – Specific application – apparatus or process – Mechanical control system
Reexamination Certificate
2007-09-04
2007-09-04
Von Buhr, M. N. (Department: 2125)
Data processing: generic control systems or specific application
Specific application, apparatus or process
Mechanical control system
C239S069000
Reexamination Certificate
active
11336690
ABSTRACT:
The present invention provides methods for water conservation with AC, DC, or ambient light powered irrigation controllers without the use of complex ET (evapotranspiration) data or ET related service fees. Programming may consist of the operator entering a preliminary irrigation schedule, and entering the local zip code. The controller then periodically calculates a water budget by comparing current (non ET) local geo-environmental data with stored local geo-environmental data, and then modifies the preliminary schedule using the water budget. A number of embodiments are possible: stand-alone controllers with a temperature sensor attached directly to the microprocessor within that controller, or as a centrally placed CBM (Central Broadcast Module) which calculates a water budget percentage which is transmitted to one or more field controllers by wired or wireless means. Alternately, a TBM (Temperature Budget Module) that is separate from the controller is connected between the controller outputs and the valves, or mounted at the valves themselves. The TBM periodically calculates the ,water budget, monitors the controller outputs and adjusts the irrigation schedule based upon the water budget ratio. Because of its flexible capabilities with AC, DC, solar, or ambient light powered controllers, as a centrally broadcast water budget ratio in a wired or wireless configuration, or as an add-on to existing controllers or valves, its programming simplicity and close approximation to ET without its complications and cost, the present invention has the potential to save more water and minimize runoff than currently available ET methods.
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Buhr M. N. Von
Miller Mark D.
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