An approach to calculating metal particle detection in lubrication oil based on a micro inductive sensor. (15th November 2017)

• Record Type: Journal Article
• Authors: Wu, Yu; Zhang, Hongpeng
• Is Part Of: Measurement science & technology. Volume 28:Number 12(2017:Dec.)
• Publication Date: 2017-11-15
• Subjects: sensor -- metal particle -- oil detection -- inductance; Physical measurements -- Periodicals; Scientific apparatus and instruments -- Periodicals; Equipment and Supplies -- Periodicals; Science -- instrumentation -- Periodicals; Technology -- instrumentation -- Periodicals; Mesures physiques -- Périodiques; Physical measurements; Scientific apparatus and instruments; Periodicals; 502.87
• DOI: 10.1088/1361-6501/aa8a59
• Languages: English
• ISSNs: 0957-0233

Abstract

Abstract: A new microfluidic chip is presented to enhance the sensitivity of a micro inductive sensor, and an approach to coil inductance change calculation is introduced for metal particle detection in lubrication oil. Electromagnetic knowledge is used to establish a mathematical model of an inductive sensor for metal particle detection, and the analytic expression of coil inductance change is obtained by a magnetic vector potential. Experimental verification is carried out. The results show that copper particles 50–52 µm in diameter have been detected; the relative errors between the theoretical and experimental values are 7.68% and 10.02% at particle diameters of 108–110 µm and 50–52 µm, respectively. The approach presented here can provide a theoretical basis for an inductive sensor in metal particle detection in oil and other areas of application.