BST Sensor Application: Digital Thermometer

Abstract

This thesis deals with the research of Barium Strontium Titanate (BST) sensor and its application as digital thermometer. In general BST sensor was still in research stage, because this sensor is the first BST sensors that have been fabricated by a group of researchers at Universiti Malaysia Perlis. Barium Strontium Titanate can be operated on three modes namely ferroelectric, piezoelectric and also pyroelectric. They can be sensitive to light, gas, ultrasonic and heat. The digital thermometer measures temperature and displays as the seven-segment display. This design consists of two parts, namely, are hardware and software. The hardware part is a combination of many electronic circuits to detect temperature and the software part involve programming the microcontroller, i.e. PIC16F876A microcontroller and using software MPLAB IDE V7.31 to assemble the code. There are many problems with this project due to the changes of BST parameters and dealing with the programming PICs in a short time period.