Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Multibeam ultrasonic fish detector

An ultrasonic and fish finder technology, applied in the field of multi-beam ultrasonic fish finder, can solve the problems of difficulty in fishing with nets, increased fishery development cost, low fish finder efficiency, etc., and achieves the effect of improving spatial resolution capability

Inactive Publication Date: 2007-05-09
HARBIN ENG UNIV
View PDF0 Cites 20 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to increase the detection range of the vertical single-beam fish finder and reduce the detection blind zone, a very wide detection beam (usually up to ±40°) is required, and in order to achieve a longer detection distance, a high transmission power is required , the two are a contradiction; the single-beam fish finder also has a defect: it cannot distinguish the thickness and width of the fish school, which brings difficulties to the net fishing; and, using the single-beam fish finder equipment, in order to improve the detection The probability of fish schools must also be reduced, and the search interval of fishing boats must be reduced. This low fish detection efficiency directly leads to an increase in the cost of fishery development
According to articles published in domestic authoritative journals such as "Chinese Fishery Science" and "Journal of Fisheries Science", in recent years, fishing boats equipped with the above-mentioned advanced fishing aid equipment in neighboring countries of our country have frequently gone deep into traditional fishing grounds in our country, adopting fast detection, fast catching, and fast fishing. The strategy of finishing and running has seriously affected my country's fishery production

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Multibeam ultrasonic fish detector
  • Multibeam ultrasonic fish detector
  • Multibeam ultrasonic fish detector

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] The transducer array (2) of the invention is installed below the keel of the ship or on the side of the ship. In order to ensure the detection effect, when installing, the central axis of the transducer array (2) should be parallel to the water surface as much as possible. In consideration of reducing navigation noise (mechanical conduction noise and propeller noise), reducing or avoiding the air bubble layer, etc., the transducer array (2) should try to choose the place where the water splash is the least and the turbulence and swaying range of the ship are the smallest when the ship is sailing. , generally one-third to two-fifths away from the bow, and the draft should not exceed the depth of the keel. In order to cover a larger detection area with a beam width of 8° in the sailing direction, and to allow more preparation time for net fishing, the base array is placed at an acute angle to the horizontal plane, pointing to the direction of the ship. What DSP (10) adopt...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A fish detector of multi-wave beam ultrasonic ray type consists of above-water subunit, transverter array and receiving-transmitting switch. It is featured as forming above-water sub-unit by industrial control computer, signal generating unit, signal emitting unit, signal nursing unit, signal collecting / processing unit, display and storage, enabling to obtain more accurate information of fish school since multi-channel transverter is used in detector for having intensity of receiving echo raised.

Description

technical field [0001] The invention relates to a multi-beam ultrasonic fish finder for efficient acquisition of wide-fan fish school information. Background technique [0002] In fishery development, in order to reduce the blindness of fishing and improve economic benefits, basically all large, medium and small fishing boats are generally equipped with fish finder equipment. At present, the information, patents and products about fish finders that can be found at home and abroad basically involve the design and application of vertical single-beam fish finders. The appearance of this prototype fish finder, which was born in the 1950s, once brought a revolution to the world's marine fisheries, but in the 21st century, which is more dependent on marine fisheries, their defects and shortcomings have become increasingly apparent. [0003] The working principle of the vertical single-beam fish finder is as follows: it uses a single beam to transmit ultrasonic waves directly belo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01S15/96
Inventor 李海森周天毕晓君么彬魏玉阔陈宝伟刘晓刘文政
Owner HARBIN ENG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products