Mutual induction proximity sensor design, constructional, and evaluation

Date

3-1992

Degree

Bachelor of Science in Applied Physics

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Edvino G. Eusebio

Abstract

The study was aimed at determining and evaluating the calibration curve of the proximity sensor from a minimum displacement of 0.1 mm. to a maximum of 3.8 mm. The sensor was constructed using the ordinary 12.7 mm. x 12.7 mm. high grade Silicon steel E core, heavy formex number 29 AWG copper wire, plastic bobbin, an insulating form and a red insulating varnish. The primary coil was wound on the center leg and carried the AC excitation while the end limbs' coil were connected in series opposition as in any three coil mutual induction devices. The carrier frequency is generated using a basic Wein Bridge Oscillator oscillating at frequency range of 110 KHz to 220 KHz. The frequency generator was constructed and implemented on a 7.5 by 7.5 printed Circuit Board. Data were collected and analyzed using Quattro Pro (Release 7), Lotus, and Linear Least Squares Approximation algorithm. Within the dynamic range of the sensor, voltage displacement plots showed a very high average voltage displacement dependence that was sloping downward. The result was in congruence to the ideal operating curve of the sensor. Minh linearity was exhibited only at four subranges specified

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

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