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An acoustic anti-theft device for tuna tracking buoys

An anti-theft device and tuna technology, applied in the field of marine fishery, can solve the problems of no anti-theft device, economic loss and loss of buoy equipment, and achieve the effects of high recognition rate, wide pickup range and timely alarm.

Active Publication Date: 2017-01-25
FISHERY MACHINERY & INSTR RES INST CHINESE ACADEMY OF FISHERY SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that the buoy is the key equipment of the tuna purse seine fishing operation method. Since the buoys currently used at home and abroad do not have effective anti-theft devices, the situation of theft and loss occurs from time to time. Or the fishing control center cannot accurately understand the specific location information of buoys (drift logs), resulting in the inability to carry out effective fishing operations

Method used

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  • An acoustic anti-theft device for tuna tracking buoys
  • An acoustic anti-theft device for tuna tracking buoys
  • An acoustic anti-theft device for tuna tracking buoys

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Embodiment Construction

[0026] Such as figure 1 The shown tuna tracking buoy acoustic anti-theft device, the tracking buoy is fixed with the driftwood used for tuna purse seine fishing, the tracking buoy is a satellite tracking drifting buoy, which can be used as a Lagrangian buoy for ocean surface dynamics, so The tracking buoy is composed of a satellite transceiver, GPS, an echo sounder for detecting fish schools, a temperature sensor, a magnetic switch, a solar panel and / or a battery and a solid casing, and the acoustic anti-theft device is placed in the In the tracking buoy, the acoustic anti-theft device has a hydrophone for monitoring underwater noise. The output of the hydrophone is sequentially connected to a signal amplifier, a bandpass filter, an A / D converter and a DSP microprocessor, and the DSP microprocessor is based on stored conventional marine engine underwater noise sound feature library and pattern recognition The library performs feature extraction and target recognition on under...

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Abstract

The invention discloses a tuna tracking float acoustic anti-theft device. A tracking float is used for fixing driftwood used for tuna seine catching. The tracking float is a satellite tracking floating float, and is composed of a satellite transceiver, a GPS, a fathometer used for probing fish schools, a temperature sensor, a magnetic switch, a solar cell panel and or a storage battery and a solid shell. The acoustic anti-theft device is arranged in the tracking float and is provided with a hydrophone used for monitoring noise under water, the output end of the hydrophone is sequentially connected with a signal amplifier, a band-pass filter, an A / D converter and a DSP micro processor, and the DSP micro processor carries out feature extraction and goal recognition on the noise under water according to a stored underwater noise sound feature library and a mode recognition library of a conventional ship engine.

Description

technical field [0001] The invention belongs to the technical field of marine fishery, in particular to an acoustic anti-theft device for a tuna tracking buoy. Background technique [0002] With the improvement of material living standards in modern society, human beings pay more and more attention to health, and tuna is favored as a nutritious and healthy aquatic food. Different waters and different types of tuna have different fishing methods. Seine fishing using driftwood to lure fish is one of the tuna fishing operations. The principle is to fix the buoy with the driftwood, and the buoy sends the location of the driftwood to the operation boat or fishing control center through satellite at regular intervals. The location, fishing situation, UTC time, temperature, electricity and other relevant information, so that the operating boat or fishing control center can determine whether it is worthwhile to carry out fishing operations. It can be seen that the buoy is the key e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B63B22/00
Inventor 许明昌江涛倪汉华汤涛林
Owner FISHERY MACHINERY & INSTR RES INST CHINESE ACADEMY OF FISHERY SCI
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