| 摘要 |
A method of actuating a self-flushing toilet is provided wherein an electronic circuit having a dual threshold sensor system controls the flushing mechanism of the toilet. The circuit includes a pair of pulsating infrared LED's and detection circuitry for establishing a close proximity and extended range threshold. Signal processing within the circuit creates a logical trigger pulse from a reflected signal received in response to the circuit determining that a user of the toilet has entered on of both thresholds. Detection circuitry is provided for determining that the user of the toilet has release at least one of the thresholds and for directing a control signal to a plurality of output drives. The solenoid activated flushing mechanism, a solenoid activated chemical mixing valve and a rotation seat motor can be coupled to the circuit output drives.
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