Calamary fishing device

Abstract

A calamary fishing device comprises a compressed air source arranged on a ship, the outlet end of the compressed air source is connected with a pressure reducing valve, the controlled inlet end of thepressure reducing valve is connected with a microcomputer through a first cable, and the microcomputer is connected with an echo sounder of an underwater antenna through a second cable; the calamaryfishing device further comprises a module installed under the sea surface, the module comprises a first pneumatic fish sound emitter and a second pneumatic fish sound emitter, the first pneumatic fishsound emitter is connected with an outlet of the pressure reducing valve through a flexible pipe and the controlled valve, and the second pneumatic fish sound emitter connects the controlled valve with the microcomputer through a third cable. According to the calamary fishing device, calamary fishing can be enhanced by attracting and retaining calamaries in a fishing area and enhancing the searching preying enthusiasm of the calamaries, so that activation of calamary fishing in the whole period of line-extending calamary fishing or fishing with other fishing gears can be guaranteed.

Description

technical field [0001] The invention relates to the field of industrial fishing, in particular to a squid fishing device. Background technique [0002] Various sound generating devices are currently used to attract and gather fish and marine invertebrates for intensive fishing purposes. Known hydroacoustic devices, including electric hydroacoustic transmitters or piezoceramic hydroacoustic transmitters, with recorders recording a series of acoustic signals, such as the sound of yellowtail feeding, the sound of a ship reversing, a series of pulses at a frequency of 600 Hz , rain sound and amplifier. During the fishing process, the transmitter is put into the water from the ship's side, and the recorder and signal amplifier are placed on the ship. [0003] The squid is acted on by the sound vibration propagating in the water body, and the use of the sound signal can enhance the attraction effect of the light field, thereby improving the fishing efficiency of the squid. [0...

AI Technical Summary

Problems solved by technology

[0014] The lack of evaluation of the squid density (influx level) at different distances from the boat and the adaptive relationship of the sound source level of the emission signal to the squid pooling distance, etc., which greatly reduces the efficiency of attracting and keeping squid in the fishing area

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