Sound wave generator for entrapping herring

Abstract

The invention relates to a sound wave generator for entrapping herring, which comprises a transformer, a capacitor and triodes, wherein the output end of an oscillating coil of the transformer is connected with the capacitor in series; a central shaft head of a control coil of the transformer is connected with the cathode of a power supply and emitting electrodes of the triodes by a resistor; the other two ends of the control coil are respectively connected with base electrodes of the triodes by a diode; a central tap of a power coil of the transformer is connected with the anode of the power supply by a shunt resistor and a switch; one end of the power coil is connected with a collecting electrode of one triode; the other end the power coil is connected with a collecting electrode of the other triode and then grounded; a voltmeter is connected to the input end of the power supply in parallel; and an ammeter is connected to the shunt resistor in parallel. The entrapping device has the advantages of simple structure, small volume and convenient use. An oscillating wave of the entrapping device resonates with the sleep frequency of the herring so that the herring is entrapped in sleep. The life habit of the herring is not affected and the labor intensity in herring entrapping is low.

Description

technical field [0001] The invention relates to a sound wave fishing device, in particular to a sound wave generator for trapping herring. The invention belongs to the technical field of acoustic vibration sensing electronics. Background technique [0002] Herring is also called black carp, blue carp, screw green, and black carp. The herring is relatively large, long cylindrical, with a slightly flattened tail. The top of the head is wide and flat, the mouth end is curved. Upper jaw slightly longer than lower jaw. no need. The eyes are located in the center of the head. Gill rakers thin and short. Hypopharyngeal teeth are molar-shaped with smooth surfaces. The abdomen is round, and the body is covered with hexagonal large round scales. The lateral line is slightly curved above the pelvic fin, and then extends to the middle of the caudal peduncle. The dorsal fin is short, without hard spines, the pectoral fin does not reach the pelvic fin, and the pelvic fin does not...

AI Technical Summary

Problems solved by technology

It is not possible to specialize in herring fishing. It is inefficient to use a cast net to catch fish in a wider water surface. It is labor-intensive to use a pull net to fish, and it is very inconvenient to catch fish. When using a cast net or a pull net, the caught fish are easily injured or Missed catch, 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, it is difficult to use the net, and the efficiency of catching herring is low

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