| 摘要 |
<p>PURPOSE:To protect a user's clothes, a toilet floor or the like from being wetted by forming a pair of seating detection electrodes with the lead wire of a seat temperature detection sensor, and raising capacitance between the electrodes, when the user is seated on a seat. CONSTITUTION:When a user P is seated on a seat 1, capacitance between electrodes A and B in a resonance circuit 22 increases, due to the capacitance of a human body. When the resonance frequency determined by the aforesaid capacitance and the inductance of a resonance coil 32 agrees to, or comes near an oscillation frequency from an oscillation circuit 21, substantial resonance current flows in the resonance circuit 22. In this case, voltage across the resonance coil 32 is made high, and outputted to a detection smoothing circuit 23. Output voltage from the detection smoothing circuit 23 is compared with reference voltage inputted to the comparator CP of a comparison circuit 25 via a reference voltage setting circuit 24. Then, an 'H' level signal is sent from the output end of the comparison circuit 25. In this state, when a 'washing' switch is turned on, an electromagnetic valve 5 opens due to the operation of a switch operation circuit 27 to blow washing water heated up to suitable temperature from a nozzle 7, thereby washing the private parts.</p> |
