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Analyzer Of Density Based On SoC

Posted on:2012-05-25Degree:MasterType:Thesis
Country:ChinaCandidate:J J LinFull Text:PDF
GTID:2212330338967754Subject:Measuring and Testing Technology and Instruments
Abstract/Summary:PDF Full Text Request
Powder industry, is closed to people's life, is closed to people's job . People have a long histroy of producing and processing in the powder industry, people also gained so much in this industry of powder ,and it also brought so much convenience to the people.The word of powder first appeared in the early 20th century, and for the application of powder began in the Stone Age, in ancient times Upper Cave Man in Beijing Zhoukoudian use the ground hematite to decorate stone beads, as time goes by, people added quartz powder to the clay,which is material of pottery, when firing pottery,to improve the performance of ceramic heat-resistant CML, Yangshao period, people use red iron ore, manganese and other black pigment powder for making colourful pottery, in the ming dynasty. A book named "exploitation of the works of nature" which is written by Song Yingxin, described some of the original powder processing on a detailed, and in the contemporary, more powder engineering industries supporting the national economy.With the continuous development of powder technology, people deepen powder research, measured and characterization on the powder particles become more and more important, become the focus of the research .And target of measurement of particles is the size of particle, surface area of particle, particle surface morphology and the true density of powder.In the powder industry, true density is one of the basic properties of various powders, different powders have different densities, the powder size and density of the molecular structure of closely related, affecting the surface of powder characteristics. In industrial production , but also by determination of true density of the product to do its purity analysis. True density is the main mineral properties, it is not only important to identify one of the characteristics of minerals, or quantitative structural defects in the crystal structure determined the number and degree of crystallinity is one important criterion, not only that, the performance of the material and its micro-macro Characteristics of the particles is closely related, so true density of the indicators are widely used in materials science and other related fields of science.With the powder industry, from the start can barely produce between 0.1-10μm in diameter ultra-fine powder to easily produce a 0.001-0.1μm in diameter between the nano-powder materials, Have been attributed to powder technology in the development, progress, accompanied by how efficiently the powder Detection and Characterization of becoming an increasingly important research topic, the measurement of the powder particles, powder characterization is Body to control the production process means and methods, the accuracy of traditional means of detection low, not high degree of automation, information processing speed is low, the test results can not be timely and effective feedback delay causes the control to adjust the production process and other shortcomings, to some extent Limits the powder industry to a higher precision and advanced development. With e-science, computer technology, the rapid development of automated measurement and control instruments, becoming more intelligent, will make the development of all walks of life break through the bottleneck.Traditional testing methods based on true density of some shortcomings, in order to meet modern industry for the powder measure powder and characterization of the demand for real-time efficiency, this use of electronic science and technology, computer technology, combined with sensor principle, automatic control theory, C8051F020 MCU as a microprocessor, microcontroller-based control system proposed automatic design of real density tester, in order to achieve fast automatic testing, analysis, true density of solid material, the proportion of test results than the traditional bottle method repeatability better, more accurate high.
Keywords/Search Tags:true density, replacement of air, system on chip
PDF Full Text Request
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