Fluid handling – Ambient condition change responsive – For controlling soil irrigation
Patent
1996-12-31
1998-11-17
Chambers, A. Michael
Fluid handling
Ambient condition change responsive
For controlling soil irrigation
13762412, 239 69, 239 70, F16K 3102
Patent
active
058363394
ABSTRACT:
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 detected. When applied to automatic irrigation systems and the like, the invention disables normal operation of the system by interrupting power to the irrigation valves during and after detection of precipitation. The control system includes sensitivity selections to electronically adjust the triggering threshold to precipitation, as well as a decoupled comparator network which compensates for background ambient light levels. Furthermore, the duration of sensed precipitation will determine the disable time period by reprogramming the output delay from a short to a long delay time period, if so desired. The time of the long delay is then user selectable to a plurality of time periods. The invention comprises a small outdoor probe, and a separate control and display unit that is capable of interfacing with a plurality of automated systems.
REFERENCES:
patent: 3808385 (1974-04-01), Klinefelter
patent: 4613764 (1986-09-01), Lobato
patent: 4684920 (1987-08-01), Reiter
patent: 4701613 (1987-10-01), Watanabe
patent: 4919165 (1990-04-01), Lloyd
patent: 4921001 (1990-05-01), Pittsinger
patent: 4987296 (1991-01-01), Kajioka
patent: 5004014 (1991-04-01), Bender
patent: 5060859 (1991-10-01), Bancroft
patent: 5193570 (1993-03-01), Mott
patent: 5207380 (1993-05-01), Harryman
patent: 5321578 (1994-06-01), Morrison
patent: 5355122 (1994-10-01), Erickson
patent: 5375617 (1994-12-01), Young
patent: 5445176 (1995-08-01), Goff
patent: 5464044 (1995-11-01), Brinkerhoff
patent: 5546974 (1996-08-01), Bireley
Jul./Aug. 1994 Irrigazette "Equipment on the Market" (J.F. Leblond).
May/Jun. 1995 Electronic House "Intelligent Sprinklers" (L. Montgomery).
Craigo M. Thomas
Klever David L.
LandOfFree
Raindrop counter and control system for irrigation systems does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Raindrop counter and control system for irrigation systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Raindrop counter and control system for irrigation systems will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-875600