Apparatus for monitoring the toxicant contamination of water by using aquatic animals
US4888703A · kind A · utility
21Cited by
7References
13Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Sep 4, 1987 |
| Grant date | Dec 19, 1989 |
| Priority date | — |
| Expiry date | Sep 4, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30108
- WIPO fieldMeasurement
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.