Microcomputer-based large- scale position measurement in two dimension using FM radio waves

Date

6-2001

Degree

Bachelor of Science in Applied Physics

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Emmanuel A Florido

Abstract

A large-scale position measurement instrument in two-dimensional system using radio wave was designed, implemented, tested, and evaluated. An FM transmitter and receiver was used for the instrument. An Input/Output Digital Card was designed to be able to interface the instrument to a 80486SX microcomputer system via the Industry Standard Architecture (ISA). A versatile program routine was developed to control the instrument for determining the position, collection, presentation, and storage of data. Based on a clock frequency of 27.095 MHz and FM wave speed of 3.0 x 108 m/s, a distance resolution of 5.5 m for one clock count determined the precision of the instrument. A test object that falls within any of the 5.5-m wide intervals is located by the instrument at the lower end of the interval using two receivers RI and R2 placed 5.54 m apart. The test object was placed at ten different positions at 3 m intervals starting from 6 m relative to RI. Two schemes for analyzing data were used. The first scheme compares the instrument's actual measurement with the expected measurement based on the resolution. The second scheme uses intervals for locating the object which gives the uncertainty within the 5.5 m interval.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

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