A WEIGHT CHECKER BASED ON DIGITAL TECHNIQUE

Abstract

Recent advances in digital computer and digital communications systems have led to a corresponding growing interest in digital weight techniques because of engineering advances offered by digital systems over its analogue counterpart. In this work, a digital weight checker liquid crystal display has been designed. The weight checker uses linear voltage differential transformer (LVDT) transducer in which position of displacement of spiral is proportional to the output voltage of transducer. Its accuracy and provision of constant impedance with infinite resolution makes it suitable for most applications. The system has its range from 0 to 20v corresponding to 0 to 20kg.