Touch actuated system responsive to a combination of resistance and capacitance
AssigneeHoneywell Inc.
InventorSheldon L. Schultz
Life of this patent
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Abstract
A system that is responsive to the touch of an animal, and is activated by a combination of the inherent body capacity of the animal and the application of a skin resistance to a detector means. A digital oscillator provides two pulse outputs that are compared in a pulse processing means. One of the pulse outputs is fed to a touch responsive area, that in turn is connected to the pulse processing means, a buffer amplifier and a load. The touch responsive area activates the pulse processing means whenever the touch responsive area is bridged by a resistance and at the same time a body capacitance exists to ground.
Claims10
A touch actuated system that responds to the touch of an animal, including:
- continuous pulse generating means for generating a pair of pulse outputs;
- at least one touch actuated detector means connected to receive said pair of pulse outputs;
- said detector means including a touch responsive area having two spaced conductor means which are adapted to be connected together resistively by an animal that has an inherent capacitance to ground;
- said touch responsive area having a first of said spaced conductor means connected to a first of said pulse outputs through an asymmetrically conducting impedance means;
- said touch responsive area having a second of said spaced conductor means connected to pulse processing means;
- and said pulse processing means connected to a second of said pulse outputs with said pulse processing means changing state to operate a load when an animal contacts said touch responsive area to alter the resistance between said spaced conductor means concurrently with said inherent capacitance being charged.
Dependencies are inferred from the claim text.