초록 ▼

A low voltage battery energized passive detection system generates a control signal in response to radiated heat from a human body part to energize, for settable periods of time water flow valves and ancillary equipment that may be associated with the act of washing. To minimize power demand, a prog

A low voltage battery energized passive detection system generates a control signal in response to radiated heat from a human body part to energize, for settable periods of time water flow valves and ancillary equipment that may be associated with the act of washing. To minimize power demand, a programmable microchip may be employed as a control unit and have external settable parameters.

대표청구항 ▼

A passive apparatus for controlling the operation of a fluid flow control valve in response to the presence of a human body part, said apparatus comprising in combination: a) a sensor for detecting heat radiating from a human body part within a predetermined detection field and for producing an outp

A passive apparatus for controlling the operation of a fluid flow control valve in response to the presence of a human body part, said apparatus comprising in combination: a) a sensor for detecting heat radiating from a human body part within a predetermined detection field and for producing an output signal in response to such detection; b) means for opening the valve to permit fluid flow therethrough; c) means for closing the valve; d) a low voltage power source for energizing said apparatus; e) means for determining the voltage of said power source; f) means responsive to the output signal for comparing the determined voltage with at least one predetermined voltage and for generating a control signal responsive to the difference between the determined voltage and the predetermined voltage; g) means for enabling said opening means in response to a control signal generated and reflective of a determined voltage greater than the predetermined voltage; and h) means for providing a signal to enable said closing means.