Chuncai Hou, Ribo Jia, Yajiao Xu, Shenhao Yang, Weijing Zhao, Ling Yang, Xin Li. High Stable Light Scattering Based Particulate Matter Concentration Sensors[J]. Laser & Optoelectronics Progress, 2021, 58(21): 2128002
- Laser & Optoelectronics Progress
- Vol. 58, Issue 21, 2128002 (2021)
Fig. 1. Measuring system of particle counter
Fig. 2. Structure diagram of light cavity. (a) Structural design diagram; (b) structural simulation diagram
Fig. 3. Illuminance distribution maps of photosurface of detector at different distances from concave reflector. (a) 12.5 mm;(b) 13.0 mm; (c) 14.5 mm; (d) 15.0 mm
Fig. 4. Structure diagram of sensor's pneumatic loop
Fig. 5. Structure diagrams of gas jet. (a) General jet; (b) sheath flow jet
Fig. 6. TSP concentrations of prototype and TSI 8533
Fig. 7. TSP concentrations of prototype and TSI 8533 after inversion parameters optimized
Fig. 8. Performance test results of the two kinds of jets
Fig. 9. Influence of gas flow rate on the measurement of PM2.5, PM10 and TSP concentration. (a) PM2.5; (b) PM10; (c) TSP
Fig. 10. PM2.5, PM10 and TSP concentration measurement of prototype and TSI 8533 at different concentrations. (a) PM2.5; (b) PM10; (c) TSP
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Table 1. Critical Reynolds number of commom pipelines
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