System and method of controlling a flush toilet

Abstract

A system of controlling a flush toilet, which includes a first flushing channel and a second flushing channel, and the system contains: a depressurizing valve including an inlet connecting with an inlet pipe fitting, a first outlet, and a second outlet; a first water-supply pipe fitting employed to supply water from the first outlet toward the first flushing channel; a second water-supply pipe fitting applied to supply the water from the second outlet toward the second flushing channel; a first solenoid valve controlled to start and stop the first water-supply pipe fitting. The system also contains a second solenoid valve controlled to start and stop the second water-supply pipe fitting; a water pressure sensor for sensing a water pressure in the depressurizing valve and transmitting a pressure signal; and a control unit for receiving a flushing signal started by a user and the pressure signal from the water pressure sensor.

What is claimed is: 
     
         1 . A system of controlling a flush toilet, which includes a first flushing channel and a second flushing channel, and the system comprising:
 a depressurizing valve including an inlet, a first outlet, and a second outlet; the inlet being in connection with an inlet pipe fitting;   a first water-supply pipe fitting employed to supply water from the first outlet of the depressurizing valve toward the first flushing channel of the flush toilet;   a second water-supply pipe fitting applied to supply the water from the second outlet of the depressurizing valve toward the second flushing channel of the flush toilet;   a first solenoid valve controlled to start and stop the first water-supply pipe fitting;   a second solenoid valve controlled to start and stop the second water-supply pipe fitting;   a water pressure sensor used to sense a water pressure in the depressurizing valve and to transmit a pressure signal;   a control unit served to receive a flushing signal started by a user and the pressure signal from the water pressure sensor, such that after receiving the flushing signal, a starting and closing sequence and starting times of the first solenoid valve and the second solenoid valve are controlled based on the pressure signal.   
     
     
         2 . The system of controlling the flush toilet as claimed in  claim 1 , characterized in that the first flushing channel communicates with a plurality of spouts to flush the water toward a peripheral ring on the flush toilet. 
     
     
         3 . The system of controlling the flush toilet as claimed in  claim 1 , characterized in that the second flushing channel is joined with a nozzle to flush the water toward a sewage draining conduit. 
     
     
         4 . The system of controlling the flush toilet as claimed in  claim 1 , characterized in that the flushing signal is produced after the user starts a mechanical operation. 
     
     
         5 . The system of controlling the flush toilet as claimed in  claim 1 , characterized in that the flushing signal is produced after the user touches a switch. 
     
     
         6 . The system of controlling the flush toilet as claimed in  claim 1 , characterized in that the flushing signal is produced after a untouch operation. 
     
     
         7 . The system of controlling the flush toilet as claimed in  claim 1 , characterized in that the flushing signal is produced after the user triggers a sensing device. 
     
     
         8 . The system of controlling the flush toilet as claimed in  claim 1 , characterized in that the control unit is any one of a CPU (Central Processing Unit), a MPU (Micro Processing Unit), and a MCU (Micro Control Unit). 
     
     
         9 . The system of controlling the flush toilet as claimed in  claim 1 , characterized in that the water pressure sensor is a mechanical sensor or an electronic sensor. 
     
     
         10 . The system of controlling the flush toilet as claimed in  claim 1 , characterized in that the control unit determines a first start time, a second start time and a third start time according to the pressure signal received from the water pressure sensor and starts the first solenoid valve for T1 seconds and then closes the first solenoid valve, and the control unit starts the second solenoid valve for T2 seconds and then closes the second solenoid valve; the first solenoid valve is started by the control unit for T3 seconds and then is closed, wherein first start time, the second start time, and the third start time of the first solenoid valve and the second solenoid valve are not overlapped. 
     
     
         11 . The system of controlling the flush toilet as claimed in  claim 1  further comprising a DC power supply supplying power to the control unit. 
     
     
         12 . A method of controlling a flush toilet comprising steps of:
 a. receiving a flushing signal started by a user by ways of a control unit;   b. determining a first start time, a second start time, and a third start time by using the control unit based on a water pressure in a depressurizing valve;   c. starting a first solenoid valve so that a peripheral ring on a flush toilet is flushed by a water for T1 seconds, and then closing the first solenoid valve after the peripheral ring is flushed;   d. starting a second solenoid valve so that a sewage draining conduit is flushed by the water for T2 seconds and then closing the second solenoid valve after the sewage draining conduit is flushed;   e. starting the first solenoid valve again so that the peripheral ring on the flush toilet is flushed by the water for T3 seconds and then the first solenoid valve is closed after the peripheral ring is flushed;   f. flashing the steps a, b, c, d and e.   
     
     
         13 . The method of controlling the flush toilet as claimed in  claim 12 , characterized in that the flushing signal is produced after the user starts a mechanical operation 
     
     
         14 . The method of controlling the flush toilet as claimed in  claim 12 , characterized in that the flushing signal is produced after the user touches a switch. 
     
     
         15 . The method of controlling a flush toilet as claimed in  claim 12 , characterized in that the flushing signal is produced after a untouch operation. 
     
     
         16 . The method of controlling the flush toilet as claimed in  claim 12 , characterized in that the flushing signal is produced after the user triggers a sensing device. 
     
     
         17 . The method of controlling the flush toilet as claimed in  claim 12 , characterized in that the control unit is any one of a CPU (Central Processing Unit), a MPU (Micro Processing Unit), and a MCU (Micro Control Unit). 
     
     
         18 . The method of controlling the flush toilet as claimed in  claim 12 , characterized in that the water pressure in the depressurizing valve is sensed by a water pressure sensor. 
     
     
         19 . The method of controlling the flush toilet as claimed in  claim 12 , characterized in that the water pressure sensor is a mechanical sensor or an electronic sensor. 
     
     
         20 . The method of controlling the flush toilet as claimed in  claim 12 , characterized in that the first solenoid valve is mounted at a predetermined position of a first water-supply pipe fitting which connects with the depressurizing valve, and the first solenoid valve is coupled with a first flushing channel of the flush toilet. 
     
     
         21 . The method of controlling the flush toilet as claimed in  claim 12 , characterized in that the second solenoid valve is fixed at a predetermined position of a second water-supply pipe fitting which joins with the depressurizing valve, and the second solenoid valve is in connection with a second flushing channel of the flush toilet. 
     
     
         22 . The method of controlling the flush toilet as claimed in  claim 12 , characterized in that a DC power supply supplies power to the control unit.