New Orleans, Louisiana
June 26, 2016
June 26, 2016
June 29, 2016
978-0-692-68565-5
2153-5965
Instrumentation
14
10.18260/p.26441
https://peer.asee.org/26441
566
Dale H. Litwhiler is an Associate Professor at Penn State, Berks Campus in Reading, PA. He received his B.S. from Penn State University, M.S. from Syracuse University, and Ph.D. from Lehigh University all in electrical engineering. Prior to beginning his academic career, he worked with IBM Federal Systems and Lockheed Martin Commercial Space Systems as a hardware and software design engineer.
A Smart Fluid Level Instrument in a Sports Drink Bottle
Abstract
Students in a mechanical engineering program are given the task of converting parts from a sports drink bottle into a capacitive fluid level probe. The project begins in a third-year instrumentation course when student teams develop a prototype instrument design. During a subsequent computer data acquisition and control course, the students use their prototype with the addition of an embedded processor (microcontroller) to create a “smart” instrument. The students are given loose specifications for the design of their fluid level probe. The specifications have enough freedom to allow for creative variation in designs but key factors are tightly defined such that the performance of all of the designs can be compared. The students must then develop a detailed written specification for the prototype that they actually produce. A popular sports drink bottle is used as the envelope into which the design must fit. The lid of the bottle serves as the bulkhead for the probe and all required electronics. The bottle itself serves as a protective case for transport of the probe and a containment vessel for any residual fluid present after testing the probe in the test chamber. Lightweight mineral oil is used as the measurement fluid due to its desirable electrical properties and its odorless and non-flammable characteristics. This paper presents and discusses the details of the prototype development from specification writing to prototype testing. Student-developed software is also presented and discussed.
Litwhiler, D. H. (2016, June), A Smart Fluid Level Instrument in a Sports Drink Bottle Paper presented at 2016 ASEE Annual Conference & Exposition, New Orleans, Louisiana. 10.18260/p.26441
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