Long Term Stable Δ-Σ NDIR Technique Based on Temperature Compensation
Source abstract
Abstract
For a fast and long term stable Non Dispersive Infrared (NDIR) technology of gas concentration measurement, the temperature compensation is required. A novel proposed Δ-Σ NDIR system was investigated and built with a closed-loop feedback system to stabilize the signal readings without temperature drift. The modulation of the infrared heater gives a corresponding signal of gas concentration based on our proposed Δ-Σ conversion algorithm that was affected by the drift of temperatures for the infrared sensor. For our study, a new temperature compensation model was built and verified that formulates the relationship between gas concentration and temperature of sensor. The results show that our proposed Δ-Σ can measure efficiently with half of the startup time than our previous design and maintain long term stability.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Photonic and Optical Devices · Spectroscopy and Laser Applications · Advanced Chemical Sensor Technologies
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Affiliations
Department of Mechatronics Engineering, National Changhua University of Education, NO. 2, Shi-Da Road, Changhua 50074, Taiwan, R.O.C.
Funding
Ministry of Science and Technology, Taiwan
References (8)
Show source-provided references
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