Juncheng LU, Lu GAO, Qiong WU, Wen LIU, Yinjie LIANG, Daru CHEN, Jie SHAO. Carbon Dioxide Measurement Based on Off-axis Integrated Cavity Output Spectroscopy Technology[J]. Acta Photonica Sinica, 2024, 53(8): 0830002
- Acta Photonica Sinica
- Vol. 53, Issue 8, 0830002 (2024)
Fig. 1. Off-axis integral cavity output spectrum device diagram and physical diagram
Fig. 2. Single acquisition signal
Fig. 3. Relative error of integral area with different average times and direct absorption signal after 1 000 times average
Fig. 4. Linearity analysis of the system
Fig. 5. Stability analysis
Fig. 6. Sensor system response
Fig. 7. Measurement of indoor CO2 for four consecutive days
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