Patent ID: 6486786
Filing Date: 2002-11-26
Classification: B63B

Abstract:
A water-monitoring apparatus comprising:an anchor (29) for holding on to a bottom under the water; a buoy (10) for floating on the water surface; a reel (20) being mounted on the buoy (10); a tension cable (24) including a lower end tied to the anchor (29) and an upper end tied to the reel (20), the tension cable (24) being wound on the reel (20); a control device being connected with the reel (20) wherein when the water level changes, the control device rotates the reel (20), thus adjusting a length of the tension cable (24) extending from the reel (20) so that the buoy (10) always floats on the water surface; at least one sensor (30) being carried via the buoy (10) for detecting at least one environmental characteristic and for producing at least one signal representative of the at least one environmental characteristic; and a transmitter for transmitting the at least one signal to a monitoring station.