Apparatus for monitoring the toxicant contamination of water by

Details Apparatus for monitoring the toxicant contamination of water by Apparatus for monitoring the toxicant contamination of water by

1987-09-04

1989-12-19

Arnold, Bruce Y.

Boots, shoes, and leggings

119 3, 364150, 364420, 364517, G01N 0000

Patent

active

048887030

ABSTRACT:
A fish is bred in a transparent basin, into which water to be tested is supplied. A light source and a television camera are arranged in such a manner that images of the fish are taken by the camera as a silhouette. From the thus obtained fish images, the frequency distribution of the gravity centers of the fish images in the direction of the depth of water are obtained. The abnormality of the behavior of the fish is detected by comparison of the obtained frequency distribution with a reference distribution provided in advance.

REFERENCES:
patent: 656769 (1900-08-01), Hunter
patent: 1053887 (1913-02-01), Sontag
patent: 1575478 (1926-03-01), Earle
patent: 3039357 (1962-06-01), Eagle
patent: 4626992 (1986-12-01), Greaves et al.
patent: 4723511 (1988-02-01), Solman et al.
patent: 4740805 (1988-04-01), Germond

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