Watering warning device
US-7349764-B2Abstract
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 (t G ) 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 (FG N ), measured at a watering time, the high moisture value (FG H ), measured after completion of the watering operation following the watering time, and the time (t N ) until the low moisture value (FG N ) is reached, determined with the timer ( 6 ) or extrapolated.
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