TOUCH FREE AUTOMATIC TYPE WATER SUPPLY DEVICE AND METHOD

A touch free automatic type water supply device includes: a shell; first to third sensors adapted to sense an external object and then generate first to third sensing signals, respectively, wherein the first sensor is adapted to sense the external object located in a front direction of the shell, only the second sensor is adapted to sense the external object located in a side direction of the shell, and only the third sensor is adapted to sense the external object located in another side direction of the shell; an electronic control unit adapted receiving the first to third sensing signals and then generating driving signals, respectively; and a flow control unit, wherein according to the driving signals the flow control unit controls whether water is supplied, whether the flow rate of the supplied water is changed, or whether the supplied water temperature is changed.