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Vol. 151, No. 4, April 2013, pp. 63-69




Development of System for Alumina Clinker Quality Real-time Monitoring based on Sound Sensor
Qing Tian, En-Cheng Wang, Chang-Nian Zhang and Jin-Hong Li

College of Information Engineering, North China University of Technology,

Beijing, 100041, China

E-mail: tianqing@ncut.edu.cn



Received: 20 March 2013   /Accepted: 18 April 2013   /Published: 30 April 2013

Digital Sensors and Sensor Sysstems


Abstract: This article developed a set of real-time monitoring system for alumina clinker quality. By analyzing and processing blanking sound signals that are collected at the export of alumina cooler machine, the system realizes the real-time monitoring for the sintering quality of alumina clinker. It consists of quality monitoring terminal, data server, remote terminal and equipment of network transmission and switch. Quality monitoring terminal transmits sampled and encoded sound signals which are collected by sound sensor to data server through switches and optical fiber. The software that runs on the data server contain: network transmission modules, sound signal processing module, sintering quality analysis module and storage database. The data server can not only store, analyze, display sound files, but also provide real-time and historical data about clinker quality and corresponding original sound files to remote terminal after receiving requests from the terminal. According to spot tests and comparisons with the proportion method, the accuracy of alumina absorbed baking fume (insufficient firing) state detection based on this system achieves 98.41 %, and the recognition veracity rates for normal and over-firing states can also be up to 85.18 % and 87.75 % respectively. This system can realize real-time monitoring for alumina clinker quality with high accuracy, and it possesses evident potentiality in the field of alumina industry.


Keywords: Alumina clinker quality, Sound signal, Real-time monitoring, Sound sensor, Monitoring system


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