Optical oxygen sensor

Abstract

The invention relates to an optical oxygen sensor, which comprises an optical oxygen sensor probe. The optical oxygen sensor probe consists of an excitation light source, a photoelectric conversion device and an oxygen fluorescent sensitive membrane, wherein the excitation light source and the photoelectric conversion device are arranged in a sleeve; the sleeve has a structure that the upper end is provided with an opening; the opening end of the sleeve is embedded with a carrier which is made of a semi-permeable membrane or a porous material; and the oxygen fluorescent sensitive membrane is coated on the lower surface of the carrier. The optical oxygen sensor can effectively reduce the energy loss of optical transmission; has the characteristics of high fluorescence excitation efficiency, high efficiency of light energy utilization, high fluorescence receiving efficiency and high detection efficiency, and can carry out real-time on-line continuous detection on the oxygen content of the gas.

Description

Technical field [0001] The invention relates to an optical oxygen sensor, in particular to an optical oxygen sensor based on fluorescence quenching and capable of real-time in vivo measurement of oxygen content in a gas. Background technique [0002] There are two traditional oxygen measurement methods, namely: Clark oxygen electrode method and Winkler titration method. Clark oxygen electrode method can realize continuous measurement on site, but it needs to consume oxygen, and it can only measure oxygen in water. The H in the sample 2 S, protein and other substances are easy to poison the electrode used. The Winkler titration method is effective and the results are accurate, but there are problems such as large reagent consumption, complex operation process, and difficulty in online detection. The optical oxygen sensor was gradually developed in the mid-1980s. It mainly uses the principle of fluorescence quenching by oxygen to determine oxygen, does not involve oxygen mass cons...

AI Technical Summary

Problems solved by technology

The Clark oxygen electrode method can realize on-site continuous measurement, but it needs to consume oxygen, and it can only measure oxygen in water. The H present in the sample 2 S, protein and other substances are easy to poison the electrodes used

The Winkler titration method is effective and the result is accurate, but there are problems such as large consumption of reagents, complicated operation process, and difficulty in online detection.

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