| 摘要 |
PURPOSE: A water supply system is provided to reduce the installation cost and to install conveniently by wirelessly transmitting and receiving the water level sensing signal of a water reservoir tank. CONSTITUTION: A water supply system comprises a motor pump(2) pumping the water of a water source(1), a water reservoir tank(4) connected with the motor pump via a pipe(3) to store the water pumped by the motor pump, a plurality of second pipes(5) connecting the water reservoir tank to homes, and an automatic water level control device(10) for keeping the uniform water level of the water reservoir tank. The automatic water level control device has a water level sensor(11) sensing the water level in the water reservoir tank, a transmitting unit(12) wirelessly transmitting the water level sensing signal, a receiving unit(13) outputting a specific electrical signal by receiving the signal transmitted from the transmitting unit, and a controller(14) controlling the driving of the motor pump by the signal from the receiving unit. According to wireless transmission and reception of water level signals, such component as a pressure sensor is not needed. Therefore, cost is saved.
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