Fish passing counting system for fish passing facility of hydraulic and hydropower engineering
A technology for fish passing facilities, water conservancy and hydropower, which is applied in water conservancy projects, marine engineering, counting objects, etc. It can solve the problems of frequent counting errors, large manual counting errors, affecting the accuracy and objectivity of fish passing effects, and achieve accurate counting. Reliable, easy to implement, and beneficial to the construction of ecological and environmental protection facilities
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Embodiment 1
[0029] When a single fish passes through the entrance section of the fishway 5, the counting probe 1 detects the passage of the fish 4, triggers the counter 2 to count, and when a fish 4 enters the entrance section of the fish passage facility, the counting probe 1 detects the passage of the fish 4 again , trigger the counter 2 to count again to realize continuous cumulative counting.
Embodiment 2
[0031] When two or more fish 4 of similar size pass through the entrance section of the fishway 5 side by side at the same time, the counting probe 1 at the entrance is triggered, but because they pass side by side at the same time, some fish 4 are counted by the probe 1 The fish 4 on one side is blocked, and the counting probe 1 can only detect the nearest fish 4 from the counting probe, and the counter 2 counts as one. However, when the fish 4 continue to go up to other groups of counting probes 1, due to the different upstream speeds of the fish, they will be successively detected by the subsequent counting probes 1, and thus the correct number of fish 4 will be recorded.
Embodiment 3
[0033] The fish 4 will turn back multiple times in the fishway 5. At this time, the counting probe 1 arranged between the outlet and the entrance in the fishway 5 will repeatedly detect the passing fish 4 and generate counts. The quantity can reflect the degree of retention and aggregation of fish in the fish pass 5.
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