156B Week 7
Overview of Status of Analysis, Design, Fabrication, Tests, etc.
Minimium Viable Product finished.
Ambient heating controller and heating resistor gets glass temperature to 30 deg C in the pre-test in about 5-10min.
Focal heating rate gets below glass temperature to within target temperature range (<50C).
Ultrasonic sensor registers movement at a satisfactory level.
At end of test, shows the glass temperature and reaction time.
Accomplishments from Previous Week
Added ambient heating controller, test displays glass temperature and reaction time.
Goals for Next Week (list names after each item). Use specific and measurable objectives.
Send important data to LCD display, clean up circuit and electrical internals (Jason)
Design new, smaller housing with mounts for the large electrical components + black box cover for patients (Inri)
Finish lifting mechanism for non-contact tests and mount for the halogen bulbs (Naif)
Heat transfer tests with Halogen bulbs explore any variation in performance between bulbs (Thomas)
Sponsor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
Comments from in-person meeting May 11 (5/11)
We put ink on the fingers to make data uniform for people with different skin pigmentation
Noted
We would like a shielding/partition to block the patient's view
This has been added as a secondary priority to the design
The box is very big, ideally I would like it if it fit into a laptop bag (90s laptop size) - Katie
Box must be able to fully support the hand/palm
Height will be reduced, width and length can possibly be reduced but it is expected to stay a similar size to support the palm
For lifting mechanism, best to have support all the way up to the first finger joint from the tip
Noted
Go ahead and do a heating test with 2 parallel bulbs
Noted, testing will begin once new bulbs come in later in week 7
The temperature difference between touch and non-touch experiments is our unit of measure. Therefore, exact temperatures are not necessary.
Biological and experimental data was requested and received from Nigel.
Thermal simulations conducted in SolidWorks.
Data to be discussed in instructor meeting 5/16.
Parallel heating with 2 bulbs will be conducted late in Week 7 to confirm
Instructor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
Important to have good contact and non-contact temperature measurements
Need to do simulated finger tests to see what the temperatures are
Thermal simulations conducted in SolidWorks
Parallel heating with 2 bulbs will be conducted late in Week 7 or early Week 8 to confirm
Simulated finger to be conducted in conjunction with parallel heating tests if time permits
Nigel indicated that temperature difference is the unit of measure for gate control theory - not exact temperatures.
Data to be discussed in instructor meeting 5/16
Comments from Other Students in the Class (indicate date of comments and if via email or in person)
N/a
Risks and Areas of Concern
Halogen bulbs broken, new batch on order
Experimental testing on hold until bulbs arrive
Resources or Information Required but not Available
N/A
Schedule
More heating testing completed by Week 8
Update Gantt chart.
Budget (list amount spent and amount remaining)
Spent: $560.12
Remaining: $3,939.88
Progress on Report and Webpage
Working on second draft.
Webpage is up-to-date.