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Position Detector Project

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Conference

2002 Annual Conference

Location

Montreal, Canada

Publication Date

June 16, 2002

Start Date

June 16, 2002

End Date

June 19, 2002

ISSN

2153-5965

Conference Session

Unique Lab Experiments

Page Count

17

Page Numbers

7.924.1 - 7.924.17

DOI

10.18260/1-2--11036

Permanent URL

https://peer.asee.org/11036

Download Count

88

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Paper Authors

author page

Terrance O'Connor

author page

Nghia Le

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

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Session 2526

Position Detector Project

Nghia T. Le, Terrence P. O’Connor Electrical Engineering Technology Purdue University

A. Introduction

This paper discusses the design of a project used in a second year course of Electrical Engineering Technology at Purdue University. The design reviews material that has been covered in the first few analog courses at the University to help students link their knowledge together.

The project uses a variable capacitor that has a rotating plate. The circuit detects the variation in the capacitor. The block diagram of the design is in Figure 1 below.

SINE WAVE WINDOW OSCILLATOR COMPARATOR

RC WHEATSTONE INSTRUMENTATION ACTIVE BANDPASS ACTIVE PEAK WINDOW BRIDGE AMPLIFIER FILTER RECTIFIER DETECTOR COMPARATOR

WINDOW COMPARATOR

Figure 1 – Block Diagram of the Project

B. The Position Detector Project

1. The Variable Capacitor

The key component of the design is a variable capacitor. It consists of two 8cm by 5cm conduction plates that are place 1mm (0.001m) apart as in Figure 2 on the next page.

The bottom plate is affixed and the top plate rotates about the shaft that results in different plate areas. The capacitance is:

C= ( Ae r 8.85 ´ 10 -12 F / m ) d

Proceedings of the 2002 American Society for Engineering Education Annual Conference & Exposition Copyright©2002, American Society for Engineering Education

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O'Connor, T., & Le, N. (2002, June), Position Detector Project Paper presented at 2002 Annual Conference, Montreal, Canada. 10.18260/1-2--11036

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