J4 ›› 2011, Vol. 41 ›› Issue (3): 921-924.

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Investigation on Measuring Methodology of Rock and Ore Sample Porosity

LING Zhen-bao1, ZOU De-bao2, ZHANG Kun1,XU Min1, WANG Jun1   

  1. 1.College of Instrumentation and Electrical Engineering, Jilin University| Changchun 130026| China;
    2.College of Precision Instrument and Optoelectronics Engineering, Tianjin University| Tianjin 300072,China
  • Received:2010-06-18 Online:2011-05-26 Published:2011-05-26

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Abstract:

The authors introduced a method to measure sample porosity based on the Archimedes law of buoyancy.The authors designed a hardware circuit of porosity measuring instrument, presented the technical specificaiton of the instrument, and analyzed experimental results. The instrument consists of weighing sensor, A/D converter integrated amplifiers and filter, single-chip microcontroller, keyboard and a display part. This instrument can not only be used in measuring the porosity of rock and ore samples, but also be used in detecting the multifarious physical parameters, such as weight, volume and density. This invention has many significant advantages, for example, high degree of intelligence, measurement accuracy, simple operation, automatically displaying the value of porosity ,communication with computer and low cost and power consumption. The measuring accuracy of porosity less than 0.5% while MSE less than 1%，thus meet the need of  porosity measurement.

Key words: porosity, sensors, single-chip microcomputor

CLC Number: 

  • P631
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