Method for measuring concentration of chemical substances

Details Method for measuring concentration of chemical substances Method for measuring concentration of chemical substances

1989-02-23

1990-11-20

McGraw, Vincent P.

Optics: measuring and testing

By shade or color

With color transmitting filter

250226, G01J 351

Patent

active

049714473

ABSTRACT:
A method for optical identification of the concentration of at least one substance which can be observed in a medium (12) directly due to its own color or indirectly with the use of a color indicator. Chromatic light is measured using a number of independent photodiodes which are sensitive in different absorption regions and the measured values thus obtained are compiled in a pattern matrix and are evaluated using pattern recognition, and the concentration of the substance is identified using known comparison values. An electrical structure (14) formed with a number of different photodiodes integrated therein is used. The method is suitable for exact and reproducible measurements of concentrations which can be identified by their color and it can be implemented in a simple manner.

REFERENCES:
patent: 3717412 (1973-02-01), Takuma et al.
patent: 4054389 (1977-10-01), Owen
patent: 4200110 (1980-04-01), Peterson et al.
patent: 4267572 (1981-05-01), Witte
patent: 4278538 (1981-07-01), Lawrence et al.
patent: 4484817 (1984-11-01), Nobuto
patent: 4520381 (1985-05-01), Moriguchi et al.
patent: 4560275 (1985-12-01), Goetz
patent: 4677289 (1987-06-01), Nozaki et al.
patent: 4766551 (1988-08-01), Begley
Japanese Abstract, vol. 6, No. 217P1521095 of Oct. 30, 1982.
Japanese Patent Abstract, vol. 9, No. 37P3351760, Feb. 16, 1985, No. 59-180310.
Article by W. Albertshofer, A. Gerhard Lehrstuhl fur Technische Elektronic, TU Muenchen Lehrstuhl fur Nachrichtentechnik TU Muenchen.

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