Ultrasonic detection and alarm device for aquaculture net cage

Abstract

The invention relates to an aquaculture net cage supersonic wave detection alarm device; a center processor and a battery are arranged in the net cage; a plurality of supersonic wave detectors are arranged outside the net cage, and a detection area covers each surfaces of the net cage; each supersonic wave detector is connected with the center processor; the center processor is also connected with an acousto-optic alarmer; when a size of a large biont exceeds a threshold and the large biont enters a set intrusion distance, the center processor starts the acousto-optic alarmer so as to drive away the creature approaching the net cage, thus ensuring the net cage safety; the net cage is also wrapped by a high pressure air pipe net, and the pressure in the high pressure air pipe net is bigger than the water pressure in the net cage location; a pressure sensor is connected with the center processor; an air pressure signal suddenly drops when creatures intrude, and the alarmer can be triggered. The aquaculture net cage supersonic wave detection alarm device can effectively percept foreign creatures intrusion without being affected by water depth and foreign materials, so detection is accurate, and alarms are reliable; the alarm device can work underwater in a long time, is low in cost, easy to mount, simple in maintenance, and easy in promotion and application.

Description

technical field [0001] The invention relates to the technical field of aquaculture net cages, in particular to an ultrasonic detection and alarm device for aquaculture net cages. Background technique [0002] At present, the marine economy is developing rapidly. People deploy aquaculture cages in the sea, make full use of the vast ocean, and realize the cultivation of various aquatic products, especially the relatively high economic value of sea cucumber, abalone and other aquatic products, with remarkable economic benefits. Because the cages are placed in the natural marine environment, the production environment of the farmed aquatic products is similar to the growth environment of wild products, so the quality of the aquatic products obtained from cage culture is equivalent to the quality of wild aquatic products. Therefore, cage culture has become the main means to obtain a variety of rare marine aquatic products at present. [0003] However, due to the high economic va...

AI Technical Summary

Problems solved by technology

[0003] However, due to the high economic value of aquatic products cultured in net cages, they have also become the target of criminals stealing

Cages are mainly composed of frames and plastic nets. Some criminals dive into the bottom of the water and use knives to cut through the nets to steal aquatic products in the cages. Fishermen engaged in aquaculture have suffered huge losses.

[0004] However, due to the large coverage of cage culture in shallow seas, the existing land-based monitoring methods are difficult to play an effective role

Traditional detection and alarm devices, such as infrared detectors, inductive sensors, etc., cannot be used effectively on water

Moreover, the sea is vast, and the possible sneaking routes of thieves are unpredictable

In particular, aquaculture cages are mostly arranged underwater, and underwater detection and monitoring facilities are currently even more scarce

As a result, the theft of aquaculture is becoming more and more rampant at present, and the water police are powerless, which affects the normal fishery production order and damages the legitimate rights and interests of fishermen.

Images