Patent ID: 8751051
Filing Date: 2014-06-10
Classification: G05D

Abstract:
1. A switch control system for controlling an electrically conductive fluid supply to a tank, comprising: a detection circuit adapted to detect a fluid level in the tank and output a voltage level signal in accordance with the fluid level; a gate circuit adapted to receive the voltage level signal and output control signals in accordance with the voltage level signal; a control circuit adapted to receive the control signals and output a first voltage and a second voltage in accordance with the control signals; wherein the control circuit comprises a first MOSFET and a second MOSFET; and a switch circuit adapted to receive the first voltage and the second voltage and turn on and turn off the electrically conductive fluid supply to the tank in accordance with the first voltage and the second voltage; wherein the switch circuit comprises a first pole, a second pole and a control valve; a core member is installed in the control valve; when the fluid level in the tank is higher than a threshold fluid level, the detection circuit is adapted to output a low voltage level signal; the gate circuit output control signals to turn off the first MOSFET and turn on the second MOSFET; the second pole is adapted to receive the second voltage from the second MOSFET; the second pole is adapted to attract the core member moving in the control valve; and the control valve is adapted to turn off the electrically conductive fluid supply to the tank.