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《Chinese Journal of Scientific Instrument》 2001-S2
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A Sort of Research Based on the Method of Oilcan Liquid Level Measureme nt

Wen Shuhui (Yanshan University, Qinhuangdao 0 66004)  
The paper presents a method that employs double\|difference pressure to check the hydraulic position of the oilca n,and introduces its foundation principle. The method removes the measurement er ror which been brought by the change of density and increases the accuracy of th e position measurement. Moreover the system circuit resolves the synchronization problem lying in the optical fiber communication and between transmitting and r eceiving. Among the measuring circuits the PW/M (pulse\|width modulation) circui t adopting CMOS components is micro power\|wasting. It can been driven by the li ght power.
【CateGory Index】: TH816
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