Integrated System Build & Test with Customer Demo
Table of Contents
Team Vision for System Level Demo with Customer
During this phase team P17483's plan was to complete all construction, as the Gantt Chart indicated we were behind schedule. During this phase we also wanted to accomplish outdoor testing of the entire system. What we actually accomplished was 2 full integrated system tests on Monday April 10th and Friday April 14th. The decisions made during this phase was to introduce thinner banana slices to the system as results from the first test indicated that the fruit may not meet desired moisture content in one day test.
Friday April 14th TestOn 4/14/2017, a full system integrated test was conducted. The preparation included the weighing and labeling of trays, as well as the chopping/spreading of banana slices. After the bananas were sliced, spread out and weighed they were ready to be put in the prototype. We also had to move the sections of the prototype into the Pi quad and set up our measurement devices to record our data. It took about three and a half hours from start to having the prototype ready to dry some fruit. Maintenance of the test included periodic supervision of the prototype and the data being recorded. This ended up being beneficial because we had neglected a few holes and loose ends at the start that needed to be sealed up in order to get accurate results. Once we had that in order we were able to gather accurate data from the test (we had an issue with the hook up of our second humidity sensor so that data was left out of the results). End clean up went rather smoothly. We needed to take final weights of the trays with bananas and then proceed to disassemble and transport prototype sections back to the 4th floor. It took about an hour and fifteen minutes.
The data that we collected includes different temperature measurements at various locations and two humidity measurements:
|T2||Collector A exit shallow|
|T3||Collector A exit center|
|T4||Collector B exit shallow|
|T5||6 inch above last tray before Chimney|
|RH1||Ambient relative humidity|
|RH2||Relative humidity in chimney|
Test Results Summary
The assumption is that the bananas have a 75% moisture. From this test we were able to remove about 82% of the moisture content (our goal is to have 10-15% moisture content left). Having only done a six and a half hour test logically this leads us to believe it would definitely be possible to reach our goal if we get a full 8 hour test in during the prime hours of the day. From the solar flux test we see that when we are outside our ideal drying times the flux drops very rapidly which slows the rate in which we can dry. We will try to avoid this in future tests to improve our results.
Summarize test results and assess effectiveness of test plans to unambiguously demonstrate satisfaction of the engineering requirements
Pictures of Test
Test Plans Progress
Risk and Problem TrackingMany of our risks from this phase have been reduced or brought to zero. The following are some explanations for a few of the risks:
- We have reduced the risk for being able to dry enough fruit in the amount of time. On April 14th we proved that it was possible. However, we did not reduce this risk completely, as there is the potential the fruit will not dry if the cloud coverage is increased.
- We have found some temporary fix ways to address the air leakage in the system. In our final design, it is a little more difficult to contain all air leakage points due to the scaling up of the system.
- We eliminated the risk of tooling injuries as the project has been successfully constructed and built to designed specification without any injuries.
- We have eliminated the risk of having too many options to test in the finite period of time. This is because we have settled and constructed on our final design.
- The risk about our designed replicator not producing comparable results has been eliminated, because the results produced were actually better than the expected test results.
- We have eliminated the risk about quality of indoor testing results as we are now at the stage of outdoor testing when weather conditions are appropriate.
Functional Demo MaterialsFrom meeting with our customer we gained more insight on what we should be getting out of and expecting from our full tests. Also provided some suggestions on how to improve our test for next time. Here some links to our notes from the review
- Notes from review
- Action Items