Team Vision for Subsystem-Level Design Phase
- What did your team plan to do during this phase?
- What did your team actually accomplish during this phase?
Our team continued feasibility analysis, focusing more in depth on the subsystems level. This focused on the definition of our subsystems, the interactions of components in those subsystems, and mathematical modeling based on currently chosen components. This phase has put our team in position to begin to experimentally test our basic components while simultaneously preparing a preliminary detailed design over the next 3 weeks.
Feasibility: Prototyping, Analysis, Simulation
Sensitivity Analysis on Device Run Time
Sensitivity analysis was completed comparing critical variables and the impact each have on the run time.
This analysis was completed using the steps shown here. The final equations found in the previous document were written into a Matlab file, see here, in order to adjust the variables more freely. Using the data from our customer requirements and the properties of the material to be used, we found that the device operation will last approximately 2.7 hours. Using the sensitivity analysis, shown above, reducing the volume of fluid to be run through the device, increasing the channel height, and increasing the channel base will decrease the run time of the device. Increasing the channel height will decrease the run time, however it will have minimal impact on the run time, as seen in the sensitivity analysis. In order to drop this run time to below one hour, we plan to decrease the volume of fluid to be sorted and run multiple channels in parallel.
These equations were input into MATLAB, and CM values were calculated over varying frequencies. The codes can be found below.
Drawings, Schematics, Flow Charts, etc.Below are technical images from each design group.
Mechanical Sub-AssembliesClick on the links below to open a PDF of the device and main sub-assemblies.
The link below will direct you to 3D PDFs for each of the assemblies above.
(Note: Files can not be viewed using Google Chrome browser unless saved locally and opened using Adobe Reader.)
- Device Interactive 3D Assembly
- Microchannel Interactive 3D Assembly
- Syringe Pump Interacticve 3D Assembly
All units are in microns.
Electrode Geometry Designs
In both images, red indicates electrodes, white is PDMS, and green is the microchannel. All units are in microns.
- May not be able to see E.coli under a microscope due to small size
Bill of Materials (BOM)The system level bill of materials can be found here.
Note: This bill of materials has not officially been released.
Risk AssessmentClick here for the risk assessment.
Design Review MaterialsCreate link to design review presentation here.
Plans for next phase
- As a team, where do you want to be in three weeks at your next review?
- As an individual on the team, what are you doing to help your team achieve these goals? (Use the individual 3-week plan template for this)
|MSD I & II||MSD I||MSD II|