Velocity Measurement of Pneumatically Conveyed Particles through Digital Imaging

Song, Ding and Peng, Lihui and Lu, Geng and Yang, Shiyuan and Yan, Yong (2009) Velocity Measurement of Pneumatically Conveyed Particles through Digital Imaging. Sensors and Actuators A: Physical, 149 (2). pp. 180-188. ISSN 0924-4247. (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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A digital imaging based method for measuring the velocity of pneumatically conveyed particles is described in this paper. The measurement system consists of a laser sheet for illumination, a CCD camera for particle image acquisition and bespoke image processing software. By controlling the exposure time of the camera, blurred images of moving particles are captured, which contain velocity information of the particles. The relationship between the motion blur length and the particle velocity is established using a lens model of the camera. To improve the robustness of the system to noise in the acquired particle images, a traveling wave equation (TWE) method is used to estimate the motion blur length and then deduce the particle velocity. In addition to computer simulations, experimental work on a a free fall particle flow rig and pneumatically conveying test rig is carried out. The results indicate that the proposed method is feasible for the velocity measurement of pneumatically conveyed particles.

Item Type: Article
Uncontrolled keywords: Particle velocity measurement, motion blur, image sensor, traveling wave equation
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA166 Instrumentation
Divisions: Faculties > Science Technology and Medical Studies > School of Engineering and Digital Arts > Instrumentation, Control and Embedded Systems
Depositing User: J. Harries
Date Deposited: 03 Aug 2009 08:06
Last Modified: 23 Jun 2014 11:17
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