A towed fish finder and a method of using the fish finder

A fish finder and tow-type technology, applied in the direction of instruments, utilizing re-radiation, and re-radiation of sound waves, can solve problems such as the specific depth range where the fishing net is not located in the water, etc.

Active Publication Date: 2019-05-24
SOUTH CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

But usually sonar is oriented to detect fish in the vertical direction, especially in the sea. The range of sonar fish detection is the full depth, not the specific depth range where the fishing net is located in the water. Fishing is basically invalid information

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  • A towed fish finder and a method of using the fish finder
  • A towed fish finder and a method of using the fish finder
  • A towed fish finder and a method of using the fish finder

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Embodiment Construction

[0038] The present invention will now be further described in detail in conjunction with the accompanying drawings and embodiments. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present invention in a schematic manner, so it only shows the composition related to the present invention.

[0039] Such as figure 1 , figure 2 and image 3 As shown, the first technical solution adopted by the present invention is: a towed fish finder and the fish finder, including: a buoy group composed of several buoys and a probe rod arranged at the lower part of the buoy group; The bottom end of the probe rod is provided with a vortex spring box, and the vortex spring box is hung with a sonar facing the horizontal direction through a suspension wire. The back of the sonar opening is provided with a rudder leaf; During the guidance process, it can ensure that the direction of the sound wave emitted by the sonar is always consistent with the d...

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Abstract

The invention discloses a towed fish finder and a method for using the same. The fish finder comprises a pontoon group and a probe rod arranged at the lower part of the pontoon group. The bottom of the probe rod is provided with a volute spring box. A sonar is suspended from the volute spring box by a suspension wire and is oriented to the horizontal direction. The back of a sonar opening is provided with a rudder blade. A plurality of anchoring counterweights are suspended from the lower part of the sonar by a suspension wire. The number of pontoons in the pontoon group is in positive linear correlation with the number of anchoring counterweights. A side of the probe rod is connected with a towing rod inclined upwards. The free end of the towing rod is connected with a towing rope. The sonar is configured in such a way that the sound waves emitted from the opening are oriented to the horizontal direction so that the sonar can detect fishes near the depth of the sonar in a targeted way. Further, the sonar is adjusted to be at an underwater depth substantially the same as a fishing gear. Thus, the sonar detects the fishes at the most targeted depth position. By means of the towing of a towing device, the detection direction of the sonar is the same as that of the towing device.

Description

technical field [0001] The invention relates to a fish finding device, in particular to a towed fish finder, the fish finder and a method for using the fish finder. Background technique [0002] At present, there are many fish finder products on the market, and their working principle is realized through the principle of sound wave transmission by using sonar positioning technology. After the fish finder emits sound waves, it measures the distance by the time it takes for the sound waves to touch the object and return. Through the reflected sound wave signal, the fish finder can identify the information of the fish. [0003] A common fish finder consists of a probe with a sonar generator placed in the water when in use. The probe is placed on the water, the sonar signal is collected, and then the fish information is obtained through microprocessor calculation and displayed to the user. But usually sonar is oriented to detect fish in the vertical direction, especially in th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S15/96G08C17/02
CPCG01S15/96G08C17/02
Inventor 陈作志孙铭帅张魁张俊
Owner SOUTH CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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