| 摘要 |
PURPOSE:To detect a poisonous substance from flowing in its early stage by fish condition monitoring by supplying sample water to water tanks equally, picking up and converting an image of an acquatic animal in the water tank into an electric signal, and performing image processing and monitoring the abnormal action of the acquatic animal. CONSTITUTION:The sample water is guided to feed water pipes 11 (11a-11c) and supplied to the water tanks 1 (1a-1c) while water flows are controlled by water flow control means 12 (12a-12c). The water flows are so controlled that the water lows when fishes 5 (5a-5c) become weak unless the water flows normally. Further, an image pickup device 20 and an image processor 30 are provided above the water tanks 1. Then the fishes 5 stay normally at the water feed sides and said and if a poisonous substance flows in, the fishes 5 act madly and temporarily and become weak, so that they are driven to water discharge sides. The image pickup device 20 picks up and converts the image of the fishes 5 into the electric signal and performs the image processing to detect the positions of the fishes 5, thereby deciding whether or not they are normal. When they are abnormal, a warning 50 is sent out. Thus, the flowing of the poisonous substance is monitored by the action of the fishes, so that is detected sensitively and securely to secure the safety of water quality.
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