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《Opto-electronic Engineering》 2004-09
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Research of optical fiber mass flowmeter

MO De-j Yong-cheng,WANG Bo (School of Information Science and Technology,Beijing University of Chemical Technology,Beijing 100029,China)  
A novel mass flowmeter with optic fiber sensor and electromagnetic vortex sensor is developed, its theoretical model and practical system structure are also given. The eddy generator in the flowmeter is specially designed, i.e., optic fiber is embedded into the eddy generator and thus an optic fiber lifting force detector is formed. The variation of the lifting force produced when fluid flows through eddy generator is detected with the micro-bending loss property of optical fiber. Combined with the vortex frequency detected by signal electrode, the mass flow of the fluid is calculated by a microcontroller. Compared with other mass flowmeter, the optical fiber mass flowmeter has the advantages of simple structure and insensitive to external interference. With water as an object to be measured, the experiments demonstrate that the relative error of measurement is within 1%.
【CateGory Index】: TH814
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