Optics: measuring and testing – Blood analysis – Hemoglobin concentration
Patent
1981-03-03
1983-11-29
Punter, William H.
Optics: measuring and testing
Blood analysis
Hemoglobin concentration
356435, G01N 3328, G01N 2127
Patent
active
044178123
ABSTRACT:
A circuit arrangement for determining the characteristics of liquids and/or gases, in particular for determining the diverse parameters of blood. The equipment determines the ratio of the signals of the sensing element resp. of the signal converter at a double-light photometer and a reference, simultaneously performing constant or periodical testing, accordingly, the control of the whole measuring system can be ensured. Signal processing takes place by the expansion of series or cutoff point interpolating logarithm forming, by averaging; the system includes structural elements for performing adjustable error detection. The largest advantage of the circuit arrangement according to the invention lies in that the instabilities of the photometers of traditional construction may be eliminated, a higher measuring accuracy becomes possible, and by ensuring the testing possibilities, by performing a continuous self-control reliable measuring data are delivered.
REFERENCES:
patent: 3531209 (1970-09-01), Williamson et al.
patent: 4180327 (1979-12-01), Maeda et al.
Cserey Laszlo
Horvath Gabor
Istvan Zoltan
Simonkay Sandor
Szabados Tamas
Medicor Muvek
Punter William H.
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