Valves and valve actuation – Electrically actuated valve – Remote or follow-up control system for electrical actuator
Patent
1992-10-27
1993-07-06
Rosenthal, Arnold
Valves and valve actuation
Electrically actuated valve
Remote or follow-up control system for electrical actuator
4623, 4DIG3, 4304, F16K 3102, E03C 105
Patent
active
052246850
ABSTRACT:
A power-saving controller for toilet flushing includes a passive pyroelectricity detecting device connected to a microcomputer, which is further connected to an active infrared detecting device, and a switch device such that when a user is nearby the toilet in a relatively long distance, the passive detecting pyroelectricity detecting device will respond to generate a first triggering signal to the microcomputer, which in turn generates a second triggering signal to actuate the active infrared detecting device to detect whether a user is using the toilet, if so, then the active infrared detecting device will respond to generate a third triggering signal to feed back to the microcomputer, which in turn enables a timer to count therein, until the user leaves the toilet position, causing the third triggering signal to terminate, which in turn triggers the microcomputer to programmably generate a fourth triggering signal to turn on the switch device, which in turns activates a pumping motor connected thereto to pump water to flush the toilet.
REFERENCES:
patent: 4941219 (1990-07-01), Van Marcke
patent: 5031258 (1991-07-01), Shaw
Chiang Sing
Hsieh Chin H.
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