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7358626 Two-wire power and communications for irrigation systems  
A large number of irrigation system devices connected to a common two-wire cable can be powered and individually controlled from a central location by transmitting over the cable DC pulses of...
7349764 Watering warning device  
A watering warning device ( 1 ) for determining watering intervals for at least one plant to be monitored, having at least one moisture content sensor ( 2 ), a timer ( 6 ) and an evaluation unit (...
7328089 Satellite irrigation controller  
In one embodiment, the present invention provides a satellite irrigation controller that allows a user to insert a input/output card into any position in any sequence and be recognized as an input...
7317972 Management of peak water use  
The present invention provides systems and methods in which an irrigation management system reduces high peak water use values by utilizing a microprocessor ( 220 ) disposed in an irrigation...
7306167 Light-activated mist sprayer system  
An automatic mist-sprayer system comprising a control unit having electronic circuitry adapted to activate the sprayer for a predetermined interval in response to a sensed ambient light condition...
7305280 Method and system for providing offset to computed evapotranspiration values  
A system for providing irrigation control is provided. The system includes a processor configured to calculate an offset to an evapotranspiration (ET) value and an irrigation system configured to...
7216020 Method and system for controlling an irrigation scheduling engine using computed evapotranspiration values  
A system for providing irrigation control is provided. The system includes a number of non-local data sources for providing data, a processor and an irrigation system. The processor is configured...
7206669 Two-wire controlling and monitoring system for the irrigation of localized areas of soil  
A two-wire controlling and monitoring system for irrigation of localized areas of soil includes a water pipeline, a plurality of controllable irrigation valves, a plurality of field sensors...
7146255 Two-wire controlling and monitoring system for irrigation of localized areas of soil  
A two-wire controlling and monitoring system for irrigation of localized areas of soil includes a water pipeline, a plurality of controllable irrigation valves, a plurality of field sensors...
7133749 Method and apparatus for optimizing soil moisture  
A self-adjusting irrigation controller takes a pre-irrigation soil moisture reading prior to irrigation, chooses an amount of water to be dispensed corresponding to that reading from a table, and...
7096094 Automatic irrigation frequency adjustment for deep watering  
The present invention provides systems and methods in which a microprocessor ( 220 ) is programmed to calculate an accumulated watering need for an irrigation zone of station ( 400 )and control...
7048204 Irrigation controller using estimated solar radiation  
An irrigation controller ( 200 ) receives temperature data, and at least partly derives an estimated solar radiation value from the temperature data. A regression model stored in a memory ( 220 )...
7033108 Turf playing surface aeration and drainage system  
A perforated pipe network beneath a playing surface. A blower connected to the pipe network drawing an air flow through the pipe network to create a vacuum. A drain pipe connecting to the pipe...
6976386 Tensiometer methods  
A method for collecting data regarding a matric potential of a media includes providing a tensiometer having a stainless steel tensiometer casing, the stainless steel tensiometer casing comprising...
6959882 Watering and aerating soil with a drip line  
When the dripline used for watering soil, low pressure air in the range 10–100 inch water column is flowed through a buried dripline, in alternation of with flow of water at 5 psig or more. The...
6950728 Interactive irrigation system  
An interactive irrigation system exchanges information between an irrigation controller and a distal computer, between the irrigation controller and a user, between the user and the distal...
6944523 Recording and processing utility commodity usage  
The present invention provides a recording node ( 100 ) at a consummer site that is used for the receiving, storing, determining and/or sending of utility commodity information. The recording node...
6892114 Modifying irrigation schedules of existing irrigation controllers  
An irrigation scheduler modifies output of a preprogrammed irrigation schedule of an installed irrigation controller to at least partially improve irrigation of the corresponding landscape....
6850819 Irrigation control system  
An irrigation control system for land comprising: (a) at least one meter to measure one or more wheather conditions in a first area; (b) at least one monitor to (i) examine rainfall data derived...
6772621 Tensiometer methods and apparatus  
A method for collecting data regarding a matric potential of a media includes providing a tensiometer having a stainless steel tensiometer casing, the stainless steel tensiometer casing comprising...
6585168 Differential relative humidity and temperature sensitive irrigation control  
An Electrically operated valve controls the flow of irrigation water. A clock or computer controls the time of day and a programmed watering schedule. The clock signal is serially connected through...
6453216 Method of controlling an irrigation system  
The present invention is a method of controlling an irrigation system that minimizes the use of irrigation water comprising defining a stop time for each watering event that is as late as possible...
6453215 Irrigation controller  
An irrigation controller in one embodiment comprising a microprocessor for controlling a plurality of watering zones of an irrigation system, a keyboard for enabling an inputting of commands...
6452499 Wireless environmental sensor system  
An environmental sensor system that communicates sensor data to a receiving unit using wireless means such as a radio frequency signal. The receiving unit interfaces with a controllable system,...
5944444 Control system for draining, irrigating and heating an athletic field  
A control system for an athletic field coordinates drainage by gravity or vacuum-enhanced and irrigation by monitoring water level with respect to a subsurface membrane, wherein a flow network...
5860247 Gas driven hydroponic system with a liquid pump outlet pipe connected to a variable buoyant float  
A multiple function hydroponics system consisting of three major components; a plant pot container, a reservoir container and a pumping chamber. The plant pot container has a drainage tube down...
5836339 Raindrop counter and control system for irrigation systems  
Disclosed is a raindrop counter and control system for irrigation systems which provides the quick detection of the presence, and subsequent absence of precipitation once it has first been...
5826792 Automatic control incorporated within lawn watering systems  
An electrically operated water control valve is interposed in a sprinkler water line extending from a building structure and which is controlled by an air temperature sensor so that the water...
5823433 Wind governed sprinkler control system  
A wind governed sprinkler control system including a sprinkler control unit adapted to provide power upon the actuation thereof. A plurality of sprinklers are connected to the sprinkler control...
5694963 Method and apparatus for freeze prevention of irrigation systems  
There is disclosed an apparatus for freeze prevention protecting an irrigation system. The response of the apparatus depends on environmental conditions. At a first temperature condition, the...
5626162 Water control gauge  
The water control gauge is a cylindrical reservoir for collecting water from rain, sprinklers and other airborne sources. The reservoir has a float measurer to measure the level of water collected...
5400815 Timer activated irrigation system control  
A control apparatus controls a timer activated irrigation system. A catch pan has a vertically extending wall and a floor. The wall defines a top thereof. The wall and floor define a basin. The...
5375617 Override control system for an automatic sprinkler system  
An override control system for an automatic sprinkler system of the type having a control box with a timer for turning on and off at least one sprinkler valve, each sprinkler valve having a valve...
5355122 Rainfall detection and disable control system  
Disclosed in a Rainfall Detection and Disable Control System which provides detection and a visual display of both a trace level and a variable accumulation level of natural rainfall. The dual...
5337777 Automatic sprinkler control override apparatus  
An apparatus (10) for controlling an automatic timer regulated sprinkler system; wherein, the apparatus (10) comprises a float member (60) disposed within a multi-stage screen member (30) secured...
5241978 Automatic sprinkler control override system  
An apparatus (10) for overriding an automatic timer controlled sprinkler system (100); wherein, the apparatus (10) comprises a float member (60) disposed within a two stage screen member (30)...
5193570 Electronic control unit for automatic sprinkling system  
An automatic irrigation and sprinkling system for applying irrigation water or airborne dispersed water to a particular area. A precipitation sensor is included for incrementing a counter based...
5048755 Irrigation system  
An irrigation system for controlling the operation of a number of control valves each of which controls the flow of water in a corresponding branch pipe leading from a common supply pipe. The...
4921001 Apparatus and method for adapting sensors to an irrigation controller  
There is provided a method and an apparatus for adapting a conventional freeze and rain sensors to be used with a water irrigation system in which a water valve is retracted by a latching solenoid.
4919165 Rainfall control for irrigation systems  
An irrigation system control apparatus which includes an adjustable float switch mounted within a rain collector receptacle which switch is actuated in response to a predetermined amount of...
4739789 Liquid flow control valve  
A flow control valve in which a moisture expansible body (18) is adapted to close a bleed valve (24) shutting off a bleed from an inlet chamber (2) through a by-pass (12) to the underside of a...
4653529 Plant watering device  
An intermittently operating watering device has a water reservoir for supplying successive flows of water to a pair of receptacles which are separated from one another by a weir. The water also...
4613764 Rain detector for irrigation control system  
A rain detector is provided for preventing operation of an irrigation system upon detection of an adjustably selected amount of rainfall. The rain detector is designed for use with an automatic...
4541446 In-ground control unit for watering systems  
An in-ground control system to override an automatic sprinkling system during periods of excess rain or moisture, having a housing with a peripheral water collection trough connected to a...
4488568 Rain detector for irrigation control  
A rain sensor system for controlling irrigation comprises: (a) a heat diffusion sensor having a tip exposed to the atmosphere and characterized in that relatively higher heat loss created by...
4393890 Method and device for automatic irrigation  
A main valve (1) is connected into a pressurized water pipe for an irrigation installation and has a valve body (4) formed as a differential piston and with a through bore (5), said body being...
4304528 Passive solar powered plant watering system  
A plant watering system that is controlled and operated in cycles by the heating effects of the sun, the system including a sealed water supply tank; a metering reservoir having a water supply...
4185652 Subaqueous sequence valve mechanism  
A subaqueous sequence valve mechanism includes one or more main valves each adapted to be disposed in the water below the surface thereof. A first expansible chamber hydraulic actuator on the main...
4180087 Automatic control for an adjustable member  
A switching arrangement for the control of an adjustable member such as a valve includes a light sensitive switch. Detection of a particular light value enables a frequency divider to transmit an...
4130382 Control system for irrigation pumps  
A rain activated control system which shuts off an irrigation pump when a predetermined amount of rainfall occurs. A receptacle for catching rain is mounted in a manner to provide adjustment of the...
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