Dust mass concentration detection technology based on multi-angle light scattering humidity correction

ZHAO Zheng; LIN Guiling; YAN Gelai

doi:10.19835/j.issn.1008-4495.20240342

Mining Safety & Environmental Protection > 2025 > 52(2): 59-65. > DOI: 10.19835/j.issn.1008-4495.20240342

ZHAO Zheng, LIN Guiling, YAN Gelai. Dust mass concentration detection technology based on multi-angle light scattering humidity correction[J]. Mining Safety & Environmental Protection, 2025, 52(2): 59-65. DOI: 10.19835/j.issn.1008-4495.20240342

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Dust mass concentration detection technology based on multi-angle light scattering humidity correction

ZHAO Zheng^{1, 2, 3, 4,},
LIN Guiling⁴,
YAN Gelai⁴

1.
Ningxia Tiandi Benniu Industrial Group Co., Ltd., Shizuishan 753001, China
2.
Chinese Institute of Coal Science, Beijing 100013, China
3.
State Key Laboratory of Coal Mine Disaster Prevention and Control, Chongqing 400037, China
4.
CCTEG Chongqing Research Institute, Chongqing 400037, China

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Received Date: April 15, 2024
Revised Date: June 02, 2024

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Abstract

Abstract

To reduce detection errors, a real-time humidity correction technology for dust mass concentration detection was proposed.By analyzing the Mie scattering theory and studying the multi-angle light scattering theory, a mathematical theoretical model for real-time humidity correction dust mass concentration detection was established, and a multi-angle light scattering dust mass concentration detection unit was developed.The characteristics of moisture absorption growth of coal dust particles were analyzed.The relationship between environmental humidity, dust particle size, and scattered luminous flux was experimentally studied.The detection technology of dust mass concentration with multi-angle light scattering humidity correction was proposed.The humidity correction factor algorithm was written into the multi-angle light scattering dust mass concentration detection unit.It is found that the detection error of the multi-angle light scattering dust mass concentration detection unit with humidity correction ξ is ≤10.6%, which is 3.3% smaller than that without humidity correction.
- dust mass concentration,
- Mie theory,
- multi-angle light scattering,
- humidity correction,
- scattered luminous flux

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