This week we worked on the proof of concept for our device to ensure that the potentiometer will work to measure angles and would work on a one degree of freedom door hinge joint. Galen helped to create a joint scaffold that could support a sensor without restricting movement. This or another design will be crucial in fixing the potentiometer to the hand in a way that can measure the angular displacement of the fingers and wrist.
Chris met with Dr. Klaesner on Monday morning to gain more guidance. He suggested creating a calibration curve to show that the potentiometer can accurately measure angles. Chris and Olivia were able to successfully develop an accurate and nearly perfectly linear calibration curve to convert the potentiometer reading to an angle. Using that equation, Chris was able to scale the brightness of an LED based on the angle and create an LED intensity vs. angular displacement plot using a photoresistor. Chris and Galen met with Dr. Klaesner again on Wednesday to ask more about the mechanical design of the potentiometer holder. He suggested contacting Jake Salter of Objex Designs for guidance in the mechanical design. We will try to arrange a meeting with him for after spring break. We will also work to collect more data and write the Validation and Verification report as the deadline approaches draws near. We will likely meet with Dr. Carter to show him and double check our progress next week.
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AuthorJust your average engineering students -- solving problems yet to be solved Archives
April 2018
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