|
Title |
Evaluation of Ultrasonic Multiple Scattering Method to Improve the Accuracy of Fine Dust Measurement
|
|
Authors |
우욱용(Ukyong Woo) ; 최하진(Hajin Choi) |
|
DOI |
https://doi.org/10.11112/jksmi.2020.24.6.119 |
|
Keywords |
비산먼지; 미세먼지; 유지관리; 초음파; 다중 산란; 수치해석 fine dust; particulate matter; structural maintenance; ultrasonic; scattering; multiple scattering; sensing; numerical simulation; cross-section |
|
Abstract |
An ultrasonic multiple scattering simulation using cross-section of fine dust particles were proposed. These days, along with awareness of air pollution, social interest in fine dust is increasing. In the construction field, awareness of fine dust is increasing, and research on preparing various countermeasures is underway. The light scattering method fine dust meter currently in use is affected by environmental factors such as relative humidity, and reliability problems in terms of accuracy are continuously reported. However, the transmission of ultrasonic waves can directly reflect the physical change of the medium based on the mechanical wave. Using these advantages of ultrasonic waves, fine dust measurement simulation was performed using the scattering cross section and ultrasonic multiple scattering theory. The shape data of the fine dust particles were collected using a SEM (Scanning Electron Microscope), and a cross-section according to the fine dust particles was derived through numerical analysis. As a result of signal processing, the error for the number density corresponding to each cross-section is minimum 19, maximum 3455.
|