System and method for observing, collecting and sorting fish passing through a fishway

Abstract

The invention discloses a system for observing, collecting and sorting fish passing through a fishway, and relates to the field of fishway engineering. It includes an observation system, an acquisition system, and a sorting system; the observation system is set on the side of the fishway main body or in the fishway main body, and the collection system is set on the side of the observation system; the sorting system is set above the viewing system. It overcomes the need to use nets to intercept several pond chambers in the prior art, use fishing gear and nets to catch fish, close the gate of the fishway exit, drain part of the pond water and then take out the fish. The efficiency is low and the statistics are complete. It needs to be fished many times. During the fishing process, the net gear is easy to cause damage to the fish, and it is easy to cause the death of the fish. It is necessary to lift the fish out of the fishway during sorting, identification and measurement, which is time-consuming and laborious. It will affect the normality of the fishway during collection, maintenance and cleaning. Disadvantages of running over fish. The invention also discloses a method for observing, collecting and sorting fish passing through the fishway.

Description

technical field [0001] The invention relates to the field of fishway engineering, more specifically to a system for observing, collecting and sorting fish passing through the fishway. The invention also relates to a method for observing, collecting and sorting fish passing through the fishway. Background technique [0002] While water conservancy and hydropower projects exert their benefits in flood control, power generation, and shipping, they also have a non-negligible impact on the ecological environment, especially the barrier impact on fish migration channels; Fish protection measures have been adopted internationally for more than 300 years. The main types include fishways, fish elevators, lifting lock chambers, and fish collection and transportation systems. Among them, fishways have the best fish passing effect and the widest range of applications. Fishways account for about 90% of the built fish passing facilities in my country. [0003] The monitoring of fishways h...

AI Technical Summary

Problems solved by technology

[0004] At present, domestic and foreign monitoring programs basically set up observation rooms directly on the side walls of fishways to observe migratory fish in fishways. They can only observe and count fish, and cannot collect fish, nor can they monitor fish species. Identification and measurement, etc.; the currently used video and infrared monitoring cannot realize the identification and measurement of fish species, etc.

[0005] According to the prior art, there are generally two methods for identifying the species and specifications of the passing fish: one is to intercept a number of pond chambers with a net, and use fishing gear and nets to catch the fish therein; The gate is closed, and the water of part of the pool is emptied and the fish is taken out again; the above two methods have the following disadvantages: (1) only the fish in some instantaneous pools can be caught, the collection amount is small, the efficiency is low, and the complete Statistics require multiple fishing; (2) During the fishing process, the net gear is easy to cause damage to the fish, and there is a dehydration operation, which can easily lead to the death of the fish; (3) The sorting, identification and measurement of the fish after collection requires It is time-consuming and laborious to lift out of the fishway; (4) When collecting fish, it will affect the normal fish passing operation of the fishway; (5) When repairing or cleaning the observation window glass, it is generally necessary to close the upstream and downstream maintenance gates, which will affect the fish passing operation during maintenance and cleaning.

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