Microdispersion is an important part of microchemical technology.The traditional method of analyzing and counting microdispersed droplets using the microscopic camera is costly and difficult to be promoted.This paper proposes a microdispersion droplet online detection technology based on fiber optic sensing.The method is based on diffuse reflective fiber,optical fiber sensor,data acquisition card,and LabVIEW program to detect droplet generation frequency and length in microchannels online.The method meets the detection of droplets with a diameter over 0.21 mm,and the upper limit of detection frequency is 500 Hz.When the droplet passes through the fiber for more than 15 ms,the method can also detect the droplet length.The results show that fiber diameter and fiber sensor response time are the main factors affecting the detection performance of the method.Compared with similar platforms,higher detection performance has been achieved at a lower cost.
维普
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