基于智能手机压电基片上目标微液滴实时跟踪研究

Real-Time Tracking a Droplet on a Piezoelectric Substrate Using a Smartphone

为了实时掌握压电基片上目标微液滴位置,确保微流分析可靠完成,提出了基于智能手机的压电基片上目标微液滴实时跟踪方法。智能手机首先分析微液滴特征区内目标微液滴图像特征信息,并每隔Δt时间自动捕获压电基片图像,并分析有效基片区的图像颜色信息,识别目标微液滴,确定其坐标,画出其轨迹,实现实时跟踪。应用自行开发的基于智能手机目标微液滴跟踪系统对载玻片和压电基片上黑墨水溶液微液滴进行实时跟踪实验,结果表明,所开发的APP可以实时跟踪压电基片上目标微液滴。

In order to grasp the location of a target droplet on a piezoelectric substrate for successfully implementing microfluidic analysis, a smartphone-based method for real time tracking the target droplet is presented. The feature information of the target droplet in the extraction area was first extracted using the smartphone. Then, an image was automatically captured every Δt time, and its color information in the valid substrate area was analyzed to distinguish the target droplet. The location of the target droplet was then obtained and its orbit was drawn for real time track. Black ink solution droplets on a glass substrate and a piezoelectric substrate were real time tracked using the self-developed app. Results show that the developed APP can successfully track the target droplet on the piezoelectric substrate.