Sound generator for entrapping eels

Abstract

The invention discloses a sound generator for entrapping eels, 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, the center shaft head of a control coil of the transformer is connected with a power supply cathode and the emitting electrodes of the triodes through a resistor, the other two ends of the control coil are respectively connected with the base electrodes of the triodes through a diode, the 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 ammeter, 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 another triode and then grounded, a voltmeter is connected to a power input end in parallel, and the ammeter is connected to the shunt resistor in parallel. The eel entrapping device has the advantages of simple structure, small size and low labor intensity in fish catching, and is convenient to use; in addition, since shockwaves generated by the sound generator resonate with the sleep frequency of eels, eels can be captured while sleeping and life habit of eels is not influenced.

Description

technical field [0001] The invention relates to a sonic fishing device, in particular to a sonic generator for trapping eels. The invention belongs to the technical field of acoustic vibration sensing electronics. Background technique [0002] Eel has a slender body in the shape of a snake, with a rounded front and flattened rear, and a tapered tail. The head is long and round. Mouth large, terminal, slightly protruding upper jaw, well-developed lips. There are fine teeth on the upper and lower jaws and mouth bones. The eyes are small and covered by a thin skin. The left and right gill openings merge into one on the ventral surface, forming an inverted "V" shape. Gill membrane connected to gill canyon. Body smooth without scales. No pectoral and pelvic fins; dorsal and anal fins degenerate with only skin folds, no soft spines, all associated with caudal fin. When living, the body is yellowish brown with irregular black spots. The body color of rice field eels often v...

AI Technical Summary

Problems solved by technology

It is not possible to specialize in eel fishing. 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 caught fish are easily 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, it is difficult to use the net, and the efficiency of eel fishing is low

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