Sonar sensor

Abstract

The embodiment of the invention relates to the technical field of fish finding, in particular to a sonar sensor. The sonar sensor comprises one or more sonar sensing units, wherein each sonar sensing unit is used for sending acoustic signals and receiving acoustic signals reflected by shoals, and measuring the positions of the shoals and / or the directions, relative to the sonar sensor, of the shoals according to the acoustic signals reflected by the shoals; the detecting depth of the sonar sensor is larger than or equal to 0.3 m. Through the adoption of the sonar sensor, the shoals can be located multi-dimensionally; the shoal detection efficiency is improved; the detection range is enlarged.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of fish detection, and in particular to a sonar sensor. Background technique [0002] With the increasing development of the fishing industry, it is a very common fishing method to use various fishing gear, fishing boats and equipment to catch fish in waters such as oceans, lakes or rivers. When fishing for schools of fish, sonar sensors are usually used to detect the position of schools of fish. [0003] Existing sonar sensors are mainly searchlight sonar sensors. figure 1 A schematic diagram of the work of an existing searchlight sonar sensor, such as figure 1 As shown, the searchlight type sonar sensor 01 is cylindrical in shape and floats on the water surface. The emission angle of the acoustic wave transmitter (not shown) in the searchlight type sonar sensor 01 is relatively narrow, that is, the coverage of the acoustic signal in the existing sonar sensor The range is small, and...

AI Technical Summary

Problems solved by technology

figure 1 A schematic diagram of the work of an existing searchlight sonar sensor, such as figure 1 As shown, the searchlight type sonar sensor 01 is cylindrical in shape and floats on the water surface. The emission angle of the acoustic wave transmitter (not shown) in the searchlight type sonar sensor 01 is relatively narrow, that is, the coverage of the acoustic signal in the existing sonar sensor The range is small, and it is basically impossible to detect fish in shallow waters with a depth of less than 1.4 meters, and the detection ability for waters with a depth greater than 1.4 meters is also low

In addition, the existing sonar sensors can only achieve one-dimensional positioning. For example, the distance between the detected fish school and the sensor can only be determined, and the spatial distribution of the fish school cannot be obtained, so the detection efficiency of the fish school is low.

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