Acoustic undersea tide gauge

Abstract

The invention discloses an acoustic undersea tide gauge. The acoustic undersea tide gauge comprises an acoustic measuring unit (1) composed of a hollow column, a transducer, an emission/receiving module, a controller and a battery, an annular substrate (2), and three holding dogs (3). A transverse inner side of the annular substrate (2) is movably connected to an inner ring (5) by a first shaft (4) and is movably connected to the acoustic measuring unit (1) which is arranged vertically and is provided with the transducer on the top of the acoustic measuring unit (1) by a second shaft (6) in the inner ring (5). In the horizontal direction, the first shaft (4) and the second shaft (6) form an angle of 90 degrees. The annular substrate (2) is connected to a marker buoy (8) by a steel rope (7). The acoustic undersea tide gauge does not need a surveying vessel as an auxiliary tool in the whole measurement process and has the advantages of simple structure, lightness, flexibility, easy operation, low observation cost and high precision.

Description

technical field [0001] The invention relates to a device for observing ocean tide levels at fixed points on the sea, in particular to an acoustic seabed tide gauge with simple structure, lightness and flexibility, easy operation, low observation cost and high precision. Background technique [0002] Tide gauge is the observation of tidal fluctuations at a fixed point (on the shore or at sea) at a certain time interval, and is an important part of marine engineering surveying, channel surveying, marine surveys, and port monitoring. Since tide gauges need to be set up to observe tide fluctuations, it is much more difficult to implement fixed-point tide gauges in sea areas far away from the shore than shore tide gauges. Although the known tide gauges include tide gauges, float type tide gauges, acoustic tide gauges, pressure type tide gauges and microwave tide gauges, etc., the current method for fixed-point tide gauges at sea is only pressure type tide gauges. Tide and fixed-...

AI Technical Summary

Problems solved by technology

When sounding, the survey ship is anchored at a certain point on the sea, the transducer tube is vertically fixed on the side of the survey ship, the transducer at the head end is placed underwater, and the main engine is placed on the deck. Advantages, but the survey ship is always used as an auxiliary tool during the entire measurement process, the measurement cost is high, and the survey ship is susceptible to position drift with the ocean current, so the observation accuracy is low

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