P16080: Heart Pump
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Integrated System Build & Test

Table of Contents

To see all documents associated with this cycle, see our MSD2 Build & Test repository

Team Vision for Integrated System Build & Test Phase

During this cycle, the team hoped to accomplish the following:

Test Results Summary

Flow Meter Testing

After consulting Dr. Slack of the RIT EE department, the flow meter was correctly setup to run with Labview. Initial testing proved that the meter was capable of sending a signal through the DAQ device to be displayed in Labview. Additional programming will be completed in the next phase to properly record the signal and translate it into meaningful data.
LabView Screenshot Flow Meter Setup Flow Meter Breadboard
public/Photo Gallery/LabView & Controls Phase 3/FlowMeterAnalogInput.PNG public/Photo Gallery/LabView & Controls Phase 3/FlowMeterWiring.JPG public/Photo Gallery/LabView & Controls Phase 3/FlowMeterWiringCloseUp.JPG

IR Sensor Selection & Test Plans

To better measure & view the flow profile of the system (than with just the hall affect flow meter alone), an IR sensor was integrated into the system design. This will allow for real time, individual pulse readings, as opposed to system averages. The new sensor is to be mounted on the inside of the pneumatic end cap, where it will measure the distance of the piston from the sensor as it cycles to pump fluid. That distance, multiplied by the piston area will yield a stroke volume which can be recorded and displayed in LabView.
Sparkfun IR Sensor

Sparkfun IR Sensor

Further test plans include writing a LabView program to record input voltage as a function of measured distance to calibrate the sensor. The sensor spec's indicate a measuring range of 4 - 30 cm. The IR sensor was tested and confirmed to be compatible with LabView and met the requirements for integration into our system.

3 Way Valve Testing Success

Previous tests proved unsuccessful as the 3 Way Pneumatic Valve would get stuck in one position, without being able to cycle on / off. Once a diode was included in the circuit, the 3 way valve was able to function as desired.

Pneumatic Parts Acquired

167 PSI 1/4" Pneumatic Tubing Exhaust Muffler & 1/4" Push to Connect
public/Photo Gallery/Parts/PneumaticTubing.JPG public/Photo Gallery/Parts/PneumaticConnectors.JPG

After extensive searching for an affordable supplier of pneumatic parts, the following items were finally purchased:

Pneumatic parts were purchased from Power Drives Inc located on Brighton Henrietta Town Line road in Henrietta

Chamber Assembly (End Caps)

One of the more important risks was properly manufacturing the end caps & piston plates for the heart chamber. After exploring various 3D printing options, the end caps were finally printed in the Sustainability Building, and the piston plate was printed in The Construct located in Institute Hall.

Pneumatic End Cap 3D Print

Pneumatic End Cap 3D Print

Initial chamber assembly. One uniseal fitting is not included (Left hole) and diaphragm has yet to be cut down to size

Initial chamber assembly. One uniseal fitting is not included (Left hole) and diaphragm has yet to be cut down to size

Risk and Problem Tracking

Functional Demo Materials

List of standards used for P16080

List of standards used for P16080

**Note** The team is currently unable to download the PDF's of each standard due to technical difficulties. The link above will remain red until the issue is resolved

Plans for next phase

Next Phase Gantt Chart

Next Phase Gantt Chart


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