Senior Design Project Update 1/29/14 Jake Bumpus, Casey Fitzgerald, and Michael Schultis

What we have achieved Establish Graphical User Interface (GUI) Established Serial Communication Peristaltic Pump (Old and New) Mass Balance Pressure Transducer Reading Analog Circuitry Air Regulator Feedback Loop PID Feedback Control Preliminary Pulsatility Capabilities

Graphical User Interface Basic Control Panel Pump Control Mass Balance Top Level Menu

Basic Control Panel Pressure transducer reading Pressure transducer calibration curve (recall, plot value, clear plot) Feedback Control

Pump Control Investigating rate of pump update Physiologic flow rates seem feasible Add Excel input – any additions?

Mass Balance Acquires data at specified time interval Saves data to excel file (.csv) Option to zero and read Needed: include pressure readings in data log

Top Level Menu Concept Ability to run up to four experiments at once Predefined experimental setups

Looking Ahead Immediate Future: Determine feasibility of peristaltic pumps for pulsatility Syringe pump communication Will require RJ11-to-USB converter Add Mass Balance and data logging to combined pressure system Resolve power supply issues Long term Combine/modify all components for three different experiments Finalize hardware design Power supply Integrated circuit USB hubs/converters Unified box

Unified Hub Allow for Four Setups 8 Pressure transducers 8 Pressure regulators 6 Peristaltic Pumps 2 Mass balances 2 Syringe pumps Circuitry contained within the box One power cord and 1 usb to laptop

Gantt Chart