Watering warning device

Details Watering warning device Watering warning device

2005-10-20

2008-03-25

Picard, Leo (Department: 2125)

Data processing: generic control systems or specific application

Specific application, apparatus or process

Mechanical control system

C137S078200, C047S079000

Reexamination Certificate

active

07349764

ABSTRACT:
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 (3) is described. The evaluation unit (3) is designed for determining the time (tG) of the next necessary watering operation for the at least one monitored plant in dependence on a characteristic watering curve (S) over time (t), the watering curve (S) being determinable in a self-learning manner in at least one learning phase from a low moisture value (FGN), measured at a watering time, the high moisture value (FGH), measured after completion of the watering operation following the watering time, and the time (tN) until the low moisture value (FGN) is reached, determined with the timer (6) or extrapolated.

REFERENCES:
patent: 3740575 (1973-06-01), Bizzoco
patent: 5337957 (1994-08-01), Olson
patent: 6374079 (2002-04-01), Hsu
patent: 6453216 (2002-09-01), McCabe et al.
patent: 2003/0208306 (2003-11-01), Addink et al.

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