Photonic device evaluation apparatus for non-contact gas sensor in greenhouse gas detection

The evaluation device addresses outdoor greenhouse gas measurement challenges by simulating controlled gas conditions and extending optical paths within a gas cell, improving detection precision for photoelectric elements.

KR103000131B1Active Publication Date: 2026-08-05KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY
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Patent Information

Application Number
KR1020240196450
Authority / Receiving Office
KR · KR
Patent Type
Patents
Current Assignee / Owner
Filing Date
2024-12-26
Publication Date
2026-08-05
Estimated Expiration
2044-12-26

AI Technical Summary

Technical Problem

Existing non-contact gas detection technologies, particularly absorption spectroscopy, face challenges in accurately measuring greenhouse gas concentrations in outdoor environments due to variations in environmental conditions, necessitating a method to evaluate photoelectric devices under controlled conditions.

Method used

An evaluation device comprising an infrared heat source, gas cell with reflection modules, and sensor mount, which includes a cell reflection module with varying reflector positions to simulate gas atmospheres and adjust optical paths, allowing for precise evaluation of photoelectric elements.

Benefits of technology

The device enables accurate evaluation of photoelectric elements by simulating desired gas conditions and extending optical path length, enhancing detection precision by increasing photon interactions with gas molecules.

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Abstract

An evaluation device for a photoelectric element for a non-contact gas sensor for detecting greenhouse gases such as carbon dioxide is provided. The evaluation device for the photoelectric element comprises: an infrared heat source; a gas cell comprising a housing having an inlet port and an outlet port and a cell reflection module disposed within the housing; a sensor mount on which the photoelectric element can be mounted; a first reflection module that reflects light emitted from the heat source one or more times to propagate toward the inlet port; and a second reflection module that reflects light emitted from the outlet port one or more times to propagate toward the sensor mount.
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