Development Of The Remote Control, Automatic Laser Particle Size Analyzer

Laser particle size measuring technique is an important research topic in laser research areas, and it has been widely used in industry, chemical industry, medicine and other fields. This technique developed greatly in recent two decades. The particle size measuring devices based on this technique also came into being. Traditional laser particle sizing device based on Fraunhofer diffraction theory which is widely used for simple calculations, but its application is limited for the smaller measurement scope.Mie theory is another classic light scattering theory, its most attractable feature is that it can be used for any size of the particle measurements, but its complex calculations limited its application. With the development of computer technology and calculation algorithm theory in recent years, this theory is used in particle sizing.Firstly this paper introduced the theory of Mie scattering and the method how to solve this problem; Aimed at low level automation shortcomings, we developed a new type of fully automatic laser granularity device , through reasonable design the spaces machine hardware circuits, so the user may realize completely automatic control through the computer, facilitated the user use; For product real-time control, we have increased network supervisory control function newly on the product.Through algorithms and systems software and hardware design, our production extended the measuring range and to achieve the system's automation control on the basis of the realization of the basic system functions. Its measuring results completely accord with the criterion of our country. For network supervisory control function, the engineer can not need to arrive at a scene , they can analyses the reason by observing measure data , operation etc. it not only have improved the convenience for maintenance, but also have saved much cost greatly. Now it has been an production and widely spreaded in the markets.