A Novel Optical Instrument for Measuring Mass Concentration and Particle Size in Real Time
Particle mass and particulate size are two important parameters used to characterize the aerosol. Currently, there are a few methods for measuring particle mass concentration and particle size. However, the existing methods have their own shortcomings. In this article, we describe a novel laser scat...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-03-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/23/7/3616 |
| _version_ | 1797607002452525056 |
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| author | Jingxiu Zhang Zhiwei Zhang Longfei Hou Weihu Zhou |
| author_facet | Jingxiu Zhang Zhiwei Zhang Longfei Hou Weihu Zhou |
| author_sort | Jingxiu Zhang |
| collection | DOAJ |
| description | Particle mass and particulate size are two important parameters used to characterize the aerosol. Currently, there are a few methods for measuring particle mass concentration and particle size. However, the existing methods have their own shortcomings. In this article, we describe a novel laser scattering instrument that measures mass concentration and particle size in real time over a wide concentration range. This instrument combines laser scattering and time-of-flight aerodynamics in one optical device. There are two innovations in this paper: (1) Two APD detectors are used to receive scattered light. One receives forward-scattered light and the other receives side-scattered light. The advantage is that the sensitivity of the detector is increased greatly, and the ratio of forward and side scattering is used to further obtain the size and shape information of the particles. (2) In order to measure the high concentrations of aerosol, a high-speed ADC and FPGA is combined to achieve an anti-overlap algorithm objective. It has been verified by experiments that the anti-overlapping algorithm can effectively improve the applicability of the aerodynamic particle size spectrometer under high concentration conditions. |
| first_indexed | 2024-03-11T05:25:10Z |
| format | Article |
| id | doaj.art-c41ea14f1f3d475d948ef3d1b56adf4a |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-11T05:25:10Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-c41ea14f1f3d475d948ef3d1b56adf4a2023-11-17T17:35:12ZengMDPI AGSensors1424-82202023-03-01237361610.3390/s23073616A Novel Optical Instrument for Measuring Mass Concentration and Particle Size in Real TimeJingxiu Zhang0Zhiwei Zhang1Longfei Hou2Weihu Zhou3School of Aeronautic Science and Engineering, Beihang University, Beijing 100191, ChinaSchool of Precision Instrument and Opto-Electronics Engineering, Tianjin University, Tianjin 300072, ChinaCollege of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, ChinaUniversity of Chinese Academy of Sciences, Beijing 100049, ChinaParticle mass and particulate size are two important parameters used to characterize the aerosol. Currently, there are a few methods for measuring particle mass concentration and particle size. However, the existing methods have their own shortcomings. In this article, we describe a novel laser scattering instrument that measures mass concentration and particle size in real time over a wide concentration range. This instrument combines laser scattering and time-of-flight aerodynamics in one optical device. There are two innovations in this paper: (1) Two APD detectors are used to receive scattered light. One receives forward-scattered light and the other receives side-scattered light. The advantage is that the sensitivity of the detector is increased greatly, and the ratio of forward and side scattering is used to further obtain the size and shape information of the particles. (2) In order to measure the high concentrations of aerosol, a high-speed ADC and FPGA is combined to achieve an anti-overlap algorithm objective. It has been verified by experiments that the anti-overlapping algorithm can effectively improve the applicability of the aerodynamic particle size spectrometer under high concentration conditions.https://www.mdpi.com/1424-8220/23/7/3616particle sizeaerodynamic particle sizeanti-overlap algorithmparticulate matter |
| spellingShingle | Jingxiu Zhang Zhiwei Zhang Longfei Hou Weihu Zhou A Novel Optical Instrument for Measuring Mass Concentration and Particle Size in Real Time Sensors particle size aerodynamic particle size anti-overlap algorithm particulate matter |
| title | A Novel Optical Instrument for Measuring Mass Concentration and Particle Size in Real Time |
| title_full | A Novel Optical Instrument for Measuring Mass Concentration and Particle Size in Real Time |
| title_fullStr | A Novel Optical Instrument for Measuring Mass Concentration and Particle Size in Real Time |
| title_full_unstemmed | A Novel Optical Instrument for Measuring Mass Concentration and Particle Size in Real Time |
| title_short | A Novel Optical Instrument for Measuring Mass Concentration and Particle Size in Real Time |
| title_sort | novel optical instrument for measuring mass concentration and particle size in real time |
| topic | particle size aerodynamic particle size anti-overlap algorithm particulate matter |
| url | https://www.mdpi.com/1424-8220/23/7/3616 |
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