Flow Control Based on Constant Pressure Microfluidic Pump System
- DOI
- 10.2991/cmfe-15.2015.209How to use a DOI?
- Keywords
- injection system;constant pressure;flow rate; wireless communication; flow resistors
- Abstract
Microfluidic driving and controlling techniques are fundamental and important in microfluidic applications. Traditional reagent driving systems of microfluidic chips such as syringe pump and piezoelectric actuator have their inherent shortcomings. Syringe pumpis easy to deformation and screw motion is unstable mayaffect flow rate. Whilethe flow range of piezoelectric actuator is too narrow.To solve these problems we establisheda constant pressure pump by maintaining stable pressure in a cylinder through the switch of electromagnetic valves, and then liquidin the pressurized reservoiris driven out. A simple PID algorithm is utilized to balance cylinder pressure,while flow rate is measured by a flow sensor. This setupcontains a wireless module that can communicate with a PC through Wi-Fi. We use 50?minner diameter flow resistors with different lengths to verify the relationship among flow rate, flow resistor length and pressure drop.The pump could generate a constant pressure in cylinder and the fluctuation of liquid flow is small.This system can be used as injection system of microfluidic chips and it can also be applied to other biochemical reaction. Operation is easy and users can control the system at a distance.
- Copyright
- © 2015, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - Limin Lu AU - Ruichang Ke AU - Shenglan Zeng AU - Quanjun Liu PY - 2015/07 DA - 2015/07 TI - Flow Control Based on Constant Pressure Microfluidic Pump System BT - Proceedings of the International Conference on Chemical, Material and Food Engineering PB - Atlantis Press SP - 883 EP - 886 SN - 2352-5401 UR - https://doi.org/10.2991/cmfe-15.2015.209 DO - 10.2991/cmfe-15.2015.209 ID - Lu2015/07 ER -