Table of Contents
Team Vision for Detailed Design PhaseDuring this phase, we obtained the materials needed and began prototyping the Observer Calibrator. We tested the LEDs in the lab of the Program of Color Science. There, we measured the individual LED luminance and the LED spectral power.
Prototyping, Engineering Analysis
We have developed a prototype graphical user interface (GUI) in MATLAB's GUI creator, "GUIDE." This GUI uses slider bars to adjust workspace variables. The GUI prototype is displayed below.
A test to ensure the LEDs could be controlled via PWM was performed for each LED individually. The tests are hosted on YouTube and can be viewed here
Bill of Material (BOM)
An updated chart of all costs, both realized and anticipated, can be viewed below.
Our total budget can also be viewed below.
These can be found in our updated BOM. The live document can be found here
Our test plan for measuring the luminance of the LEDs was updated. The flowchart for this test is shown below.
We also printed a small sample of 3D printing material, to test its ability to adhere to reflective paint. The samples painted are shown below, right after applying paint.
A link to the Requirements and Testing document, which contains more details on the proposed test plans, is given here.
A test to ensure the LEDs could be controlled via PWM was performed for each LED individually. The tests are hosted on YouTube and can be viewed here.
We tested each LED, one at a time, to ensure they meet the required spectral output and luminance level from our requirements. A graph of the relative spectral power of each LED is given below.
The peak wavelengths were captured along with the luminance values for each LED, as well. These can be found in the chart below:
From these data, we determined that all LEDs match their target peak wavelengths. From the luminance test, we decided that we may have to add a second bulb for the 190HBB LED, due to its low luminance compared to the other LEDs. All test data is captured in our requirements and testing document, here.
Our latest risk assessment can be viewed below. The updated live document can be found [risks.xlsx here]. We are currently on track with all risk mitigation schedules, as of the end of MSDI.
Design Review Materials
Our presentation slides for the combined Detailed Design Review and Gate Review can be found here
Conclusion of MSDI
We met as a group to critique the group as a whole. We felt the team dynamic was fantastic, and that the team performed well in every phase of the design thus far. Between the different majors and disciplines, we felt we had either the skills necessary or the connections necessary to accomplish all our tasks and goals. The team self-critique can be seen below: