Raindrop sensor for an irrigation system
First Claim
Patent Images
1. A precipitation sensor for an irrigation system comprising:
- a housing for receiving precipitation;
a sensing element disposed in said housing to contact said precipitation;
said sensing element comprising a substrate and at least two electrical contacts at least partially exposed from said substrate to sense precipitation;
a microprocessor in communication with said sensing element; and
an irrigation schedule interruption mechanism operatively coupled to said microprocessor for selectively interrupting an irrigation schedule of said irrigation system.
1 Assignment
0 Petitions
Accused Products
Abstract
The present invention describes a rain sensor that counts water drops with a microcontroller. After a predetermined threshold of water drops have been counted, the rain sensor interrupts an irrigation schedule of an irrigation controller.
78 Citations
18 Claims
-
1. A precipitation sensor for an irrigation system comprising:
-
a housing for receiving precipitation; a sensing element disposed in said housing to contact said precipitation;
said sensing element comprising a substrate and at least two electrical contacts at least partially exposed from said substrate to sense precipitation;a microprocessor in communication with said sensing element; and an irrigation schedule interruption mechanism operatively coupled to said microprocessor for selectively interrupting an irrigation schedule of said irrigation system. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A precipitation sensor for an irrigation controller comprising:
-
a first enclosure; a precipitation detection sensor coupled to said first enclosure; circuitry in communication with said precipitation detection sensor for processing precipitation signals from said precipitation detection sensor and interrupting an irrigation schedule executed on said irrigation controller wherein said first enclosure further comprises a collecting member that directs precipitation to drip on a single location above said precipitation detection sensor. - View Dependent Claims (9, 10, 11, 12, 13)
-
-
14. A method of interrupting an irrigation system comprising:
-
providing an irrigation controller coupled to at least one sprinkler; coupling a precipitation sensor to said irrigation controller; directing water drops from precipitation on to a drop sensor; completing an electrical circuit with said drop sensor during contact with said water drops; counting a number of circuit completions of said electrical circuit with a microprocessor; comparing said number of circuit completions of said electrical circuit with a predetermined threshold; interrupting an irrigation schedule on said irrigation controller when said number of circuit completions is greater than or equal to said threshold. - View Dependent Claims (15, 16, 17, 18)
-
Specification