Optical path reflection enhanced furfural detection system
By using an optical path reflection enhancement system, a dichroic mirror and an optical path extension unit are employed to enable visible light to pass through the thermal lens region multiple times, thus solving the problem of insufficient detection sensitivity of furfural in transformer oil and improving detection accuracy and stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHINA YANGTZE POWER
- Filing Date
- 2026-03-13
- Publication Date
- 2026-07-17
AI Technical Summary
Existing methods for detecting furfural in transformer oil lack sufficient sensitivity, making it difficult to meet the real-time monitoring requirements under online, in-situ, or energized conditions. Furthermore, there is room for improvement in the signal acquisition efficiency of traditional transmission-type optical path configurations.
An optical path reflection enhancement system is adopted, which uses a dichroic mirror to achieve optical path coupling between infrared light and visible light. This allows visible light to pass through the thermal lens region excited by infrared light twice by reflection, and then undergo multiple reflections through the optical path extension unit. Combined with the signal modulation unit, electrical signal conversion and processing are performed.
It improves the accuracy and stability of furfural detection, enhances signal strength, suppresses common-mode noise, and achieves high-precision detection of furfural concentration in transformer oil.
Smart Images
Figure CN122409541A_ABST