A microcomputer-based instrument for drywood termite (Cryptotermes Cyanocephalus Light) detection in Mollucan sau (Albizia falcataria)

Alan D. Good

Date

4-2002

Degree

Bachelor of Science in Applied Physics

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Emmanuel A Florido

Abstract

A microcomputer-based instrument for drywood termite (Cryptotermes Cyanocephalus Light) detection in Mollucan sau (Albizia falcataria) was designed, implemented and tested for accuracy. The instrument uses an ultrasonic transducer pair to detect discontinuities caused by drywood termites in wood and Indirect Pitch and Catch Test was applied. The instrument was interfaced to a microprocessor through an Analog-to-Digital Converter for data acquisition and storage. A program coded in Turbo C was made. The program plots the data of the received signals. It also plots data of saved files and can also plot two or more signals for comparison. The device was tested for sixty wood samples. The dimension of the wood was 2inches x 2inches x 6inches. The samples were divided into four treatments each having fifteen replicates. Treatment 1 served as the control treatment. Drywood termites were exposed to the wood samples for two months. Treatment 1, 2, 3, and 4 had 0, 50, 100, 150 number of termites respectively. Results of the study showed that of the sixty wood samples 37 were correctly read and 23 were incorrectly read. The total accuracy of the instrument was 61.67%.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

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