Patent ID: 6948194
Filing Date: 2005-09-27
Classification: E03D,G01S

Abstract:
1. A toilet cleaning device for controlling the opening/closing of a valve provided in cleaning water pipe which enables cleaning water to be supplied to a toilet main body, characterized in comprising: transmission means for transmitting radio waves toward a space in the vicinity of a bowl portion interior space or an opening portion of the bowl portion of a toilet stool; reception means for receiving reflected waves of the radio waves transmitted by said transmission means; a Doppler sensor provided for generating a differential signal corresponding to the difference between the frequency of a signal received by said reception means and the frequency of a signal transmitted by said transmission means; frequency analysis means for analyzing the frequency of the output of said Doppler sensor; liquid flow condition calculation means for calculating the liquid flow condition in the bowl portion interior space based on the output of said frequency analysis means; and control means which perform control of said valve in accordance with the calculation result of said liquid flow condition calculation means;