Soil moisture sensor and controller

Details Soil moisture sensor and controller Soil moisture sensor and controller

2005-03-31

2010-11-23

Fitzgerald, John (Department: 2856)

Fluid handling

Ambient condition change responsive

For controlling soil irrigation

C073S073000

Reexamination Certificate

active

07836910

ABSTRACT:
Moisture sensor devices and methods associated with operation of the moisture sensor devices are disclosed herein. One embodiment includes a moisture sensor and controller device adapted to be placed in soil comprising a switch adapted to be coupled to a power control line of an irrigation controller, the power control line for sending an activating power signal to an irrigation valve; a control circuit coupled to the switch; and a sensor circuit coupled to the control circuit and adapted to provide a signal to the control circuit, the signal corresponding to a moisture level of the soil; wherein the control circuit is adapted to control the switch to interrupt the activating power signal based on the signal from the sensor circuit; wherein the switch and the control circuit are both external to the irrigation controller.

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