Demonstration of a Ferrimagnetic Ceramic Application for Position Sensor Using a Visual Basic-based Measurement System

Abstract

In the present paper, we present an induction coil with an antenna coil’s core for proximity sensing. The sample was an inductor with an antenna coil’s core. The antenna coil’s core was placed inside the induction coil, then voltage from a signal generator flowed through this coil and the voltage frequency was set at a fixed value. Voltage drop across the inductor was sent to a computer. The computer controls the stepping motor movement for displacement of this ferrite core. This induction coil with antenna coil’s core operates as a position sensor. The details of this paper are to introduce a system developed for measuring voltage drop across the induction coil using a procedure based on virtual instrumentation. The measurements and processing of the data were made using an analog to digital converter (ADC0809), buffer (74LS244), a ET-PCI8255V3 data acquisition card and Visual Basic program. The system was able to store and display the data. In addition, this prepared system can be used for controlling the movement of a stepping motor. The antenna coil’s core was used as position sensor. So, a demonstration of the ferrimagnetic ceramic application for position sensor using the Visual Basic-based measurement system was successfully tested. This system can be used in position sensing at a distance of 0 to 4 cm. The system has been in operation this year and all its units have functioned well.