Pump control system in microfluidic systems

The project envisages the realization of a microsystem that can guarantee the control of the pumping mechanism within a microfluidic system. The microfluid system consists of a cavity into which the fluid enters through the inlet microvalve and is pumped through the outlet microvalve. The electromagnetic (EM) micropump system consists of three main components: a microfluidic component, a magneto mechanic actuator, and an electromagnetic component. The control of the pumping mechanism is ensured by an embedded microelectronic system. This ensures proper control of both the inlet and outlet microvalves and the pump diaphragm. The composite membrane structure is made of magnetite composite and patterned in matrix blocks. The injection flow rate of the EM micropump can be controlled by adjusting the input power supplied to the electromagnetic coil, and this is used to improve the injection accuracy of the fluid dosage and have potential in improving the proficiency of the existing fluid delivery system. A control circuit was designed using microcontroller ATMEGA2560 to produce square waves to control coil actuator. The system is designed to be used in many applications especially in medical drug delivery system.