Sound generator for trapping mandarin fishes

Abstract

The invention relates to a sound generator for trapping mandarin fishes. The fish-trapping sound generator comprises a transformer, a capacitor and triodes, wherein output ends of an oscillating coil of the transformer are connected with the capacitor in series, a center shaft head of a control coil of the transformer is connected with a power supply cathode and emitting electrodes of the triodes through a resistor, and the other two ends of the control coil are respectively connected with the bas electrodes of the triodes through a diode; and a center shaft head of a power coil of the transformer is connected with a power supply anode through a shunt resistor and a switch of an ampere meter, one end of the power coil is connected with the collector electrode of one triode, the other end of the power coil is connected with the collector electrode of the other triode and then is grounded, the input end of the power supply is connected with a voltmeter in parallel, and the shunt resistor is connected with the ampere meter in parallel. The fish-trapping sound generator has simple structure, small size and convenience in use, the shock waves of the sound generator are in resonance with the sleep frequency of the mandarin fishes so that the mandarin fishes can be trapped during sleeping. The sound generator has no influence on the life habit of the mandarin fishes, and labor intensity for trapping the fishes is low.

Description

technical field [0001] The invention relates to a sound wave fishing device, in particular to a sound wave generator for trapping mandarin fish. The invention belongs to the technical field of acoustic vibration sensing electronics. Background technique [0002] At present, when people fish in large rivers, large lakes or large areas of water, they generally use dragnets and cast nets. It is not possible to catch mandarin fish exclusively. It is inefficient to use a cast net to fish in a wider water surface. It is labor-intensive to use a pull net to catch fish, and it is very inconvenient to catch fish. When using a cast net or a pull net, the caught fish are easily injured Fish that escape due to injury or missed catch will be frightened, thus affecting the normal growth of fish and the occurrence of various fish diseases; There are many aquatic plants and rocks at the bottom, so it is difficult to use a net, and the efficiency of catching mandarin fish is low. Content...

AI Technical Summary

Problems solved by technology

It cannot specialize in catching mandarin fish. It is inefficient to use a cast net to fish in a wider water surface. It is labor-intensive to use a pull net to catch fish, and it is very inconvenient to catch fish. When using a cast net or a pull net, the caught fish are easily injured Fish that escape due to injury or missed catch will be frightened, thus affecting the normal growth of fish and the occurrence of various fish diseases; There are many aquatic plants and rocks at the bottom, it is difficult to cast nets, and the efficiency of catching mandarin fish is low

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