Chunshan Shen, Yinzhao Xia, Zongtao Xiao, Hao Zhang, Zilong Yang, Shaowen Li. Development of Plant Photosynthesis Automatic Monitor Based on Infrared Gas Analysis[J]. Laser & Optoelectronics Progress, 2022, 59(23): 2312001
- Laser & Optoelectronics Progress
- Vol. 59, Issue 23, 2312001 (2022)
Fig. 1. Working principle diagram inside the instrument
Fig. 2. Composition of the experimental equipment
Fig. 3. Physical diagram of the experimental equipment
Fig. 4. Schematic diagram of the front and rear panels of the chassis. (a) Front panel; (b) rear panel
Fig. 5. Structure of the automatic opening and closing leaf chamber. (a) Overall structure; (b) structure of the drive assembly
Fig. 6. Structure of the hand-held leaf chamber. (a) Overall structure; (b) enlarged view of guide assembly; (c) enlarged view of drive assembly
Fig. 7. Circuit block diagram of the access node
Fig. 8. Workflow of the access node
Fig. 9. Activity diagram of compute nodes
Fig. 10. Human-computer interaction interface
Fig. 11. Remote monitoring interface
Fig. 12. Monitoring experiments. (a) Strawberry plants; (b) geranium plants
Fig. 13. Linear regression graph of photosynthetic rate of different plants. (a) Strawberry plant; (b) geranium plants
Fig. 14. Multi-line graph of photosynthetic rate of different plants. (a) Strawberry plant; (b) geranium plant
Fig. 15. Response time and stability test curve of the system
Fig. 16. Stability test curve of the system under different CO2 concentrations. (a) 300 mol/L; (b) 500 mol/L; (c) 700 mol/L
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Table 1. Parameters of the sensor
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Table 2. Errors of detectors under different gas concentrations
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