A sound wave generator for trapping grouper

Abstract

A sound wave generator for trapping grouper. The fish trapping generator has a transformer, a capacitor and a triode. The output end of the oscillating coil of the transformer is connected in series with a capacitor. The other two ends of the control coil are respectively connected to the base of the triode through the diode; the center tap of the power coil of the transformer is connected to the positive pole of the power supply through the shunt resistance of the ammeter and the switch, and one end of the power coil is connected to the collector of a triode , the other end is connected to the collector of another triode and grounded, a voltmeter is connected in parallel to the power input end, and an ammeter is connected in parallel to the shunt resistor. The fishing device is simple in structure, small in size and easy to use, and its shock wave resonates with the sleep frequency of the grouper, so that the grouper can be caught in sleep. It does not affect the living habits of grouper, and the labor intensity is low when fishing.

Description

technical field [0001] The invention relates to a sound wave fishing device, in particular to a sound wave generator for trapping grouper. The invention belongs to the technical field of acoustic vibration sensing electronics. Background technique [0002] Among the groupers, the more common species with higher economic value include red-spotted grouper, salmon-spotted grouper, moire grouper and reticulated grouper. Red-spotted grouper and clouded grouper. Blue grouper is also known as green grouper because of its blue-brown body color, and it is a kind with a large production in Fujian. The grouper has an oval body, flat side, big head, short and blunt snout, big mouth, well-developed upper bones, fine ctenoid scales on the body, strong dorsal fin, body color can change with the environment. Adult fish are usually 20-30 cm long. The grouper is a hermaphrodite with the characteristics of sex conversion. It is all females at the first sexual maturity, and then converted i...

AI Technical Summary

Problems solved by technology

It is not possible to catch grouper 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 fish, and it is very inconvenient to catch fish. When using a cast net or a pull net, the fish caught are easy Injured or missed catch, the 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 of the river, it is difficult to use a net, and the efficiency of catching grouper is low

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