Low cost PC-based instrument for monitoring long period one- dimensional horizontal ground motion using Lehman Seismometer

Date

10-2002

Degree

Bachelor of Science in Applied Physics

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Nelio C. Altoveros

Abstract

A PC-based instrument for measuring long period horizontal ground motion was designed and implemented. The instrument made use of a Lehman seismometer sensitive to the horizontal direction of long period ground motion. An amplifier circuit was developed to increase the induced voltage generated by the sensor which arises from the relative velocity between of the seismometer coil and magnets. The instrument was interfaced to a microcomputer through its parallel printer port using a 12-bit analog-to-digital converter circuit. A software program using Turbo C was developed to automate monitoring and continuous recording of data. Collection, recording and analysis of data were done at the Physics Laboratory, IMSP, University of the Philippines Los Banos.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

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