A microcomputer-based distance measuring instrument using ultrasonic sound

Date

11-1997

Degree

Bachelor of Science in Applied Physics

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Zaldy A. Andales

Abstract

A distance measuring instrument using ultrasonic sound was designed, implemented, tested, and evaluated, Special transducers for ultrasonic sound were used for the transmitter and receiver circuits. The instrument was interfaced to a 80486SX microcomputer system through a digital input/output card which uses the 8255 programmable peripheral interface (PPI) chip. A versatile program routine was developed to program the PPI for mode 1 strobed input operation and to control the instrument for distance measurements collection, presentation, and storage into a file. The linear regression statistical analysis was used to determine the maximum measurable distance of the instrument which is about 0.7 m. The estimate distances from the 0 point mark up to the 0.7 m mark gave a slope of 1.088432 versus the actual distances. The standard deviation of the predicted actual distance was computed and gave the distance measurements a ±0.02 meter uncertainty.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

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