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The Pressure Sensing Project

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2004 Annual Conference


Salt Lake City, Utah

Publication Date

June 20, 2004

Start Date

June 20, 2004

End Date

June 23, 2004



Conference Session

Unique Laboratory Experiments & Programs

Page Count


Page Numbers

9.1283.1 - 9.1283.17



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Paper Authors

author page

Terrence O'Connor

author page

Nghia Le

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NOTE: The first page of text has been automatically extracted and included below in lieu of an abstract

Session Number 2526

The Pressure Sensing Project Nghia T. Le, Terry O’Connor Purdue University School of Technology Electrical Engineering Technology

A. Introduction

The paper discusses the use of a multi-faceted electronic project as a capstone experience for an associate degree program in Electrical and Computer Engineering Technology (ECET) at Purdue University's School of Technology New Albany location. This project incorporates several different technologies from both the analog and digital realms of electronics. The project is designed by the course instructor of ECET 297 Electronic System Design and Fabrication. ECET 297 is in the fourth semester of the A.S. program. The students are given the design of the circuit in block diagram and schematic form. Each subpart of the circuit is intended to provide review to the student as each technology has been covered in previous courses. The students are then required to fabricate the circuit one portion at a time until the project is completed. Fabrication of the project is done on prototyping (UBS-100) boards. Each section must be functioning correctly before the next section is to be fabricated and thus the project provides an excellent troubleshooting experience. Careful and neat layout of the circuit is mandated by the course instructor and the course grade is partially dependent on that. A project such as this one has been used each of the past six years in ECET 297 in New Albany. Each year's project is unique as the course instructor designs a new one for each successive class. The faculty in ECET at New Albany considers the projects used over the past six years in the course to have been effective capstone experiences for the students. Student feedback on this course has been excellent and individual students have reported that they have had such pride in their completed project that they have kept it fully assembled on its protoboard years after graduating.

The remainder of the paper discusses the design of the project. This project is a Pressure Sensing circuit that utilizes a variable capacitor as a pressure switch. The variable capacitor is constructed by using two conducting plates with a foam layer in between as in Figure 1 on the next page.

Proceedings of the 2004 American Society for Engineering Education Annual Conference & Exposition Copyright©2004, American Society for Engineering Education

O'Connor, T., & Le, N. (2004, June), The Pressure Sensing Project Paper presented at 2004 Annual Conference, Salt Lake City, Utah. 10.18260/1-2--13827

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