In the industrial sector, dust concentration measurement technologies primarily include gravimetric methods, capacitive methods, and optical scattering methods, with the optical scattering method being the most used due to its advantages in real-time monitoring. In this paper, an in-situ dust measuring instrument is designed and manufactured that offers a low-cost, easy-to-install, and highly precise solution for real-time dust monitoring across diverse environments. The proposed dust measuring instrument utilizes a laser source to emit a single-wavelength laser beam. When the laser beam passes through dust particles, forward scattering occurs. The scattered light is collected by a lens and directed through an optical fiber to a photodiode receiver. By detecting changes in the light signal and applying specific algorithms, the instrument accurately measures dust concentration. Experimental results show that the instrument performs in line with the anticipated design specifications, demonstrating its potential for widespread industrial applications in real-time dust monitoring.
Jiang et al. (Thu,) studied this question.