Note to Coin converter: A Survey

Abstract

Lately, coins have become requisite. The need for it is increasing in social places like bus stands, railway stations, markets, parking and entry lots and many others. People do not carry enough of these. To get away from this problem, smaller and lighter systems which dispense coins instead of notes were designed. One advantage is that they need not be supervised. The machine checks for its trueness by colour recognition techniques using digital image processing. It then dispenses the required change by following the coded MATLAB instructions. Devices like UV diodes, micro-controllers and Arduino were employed in this process. This survey paper shows a comparative study of various methodologies that were proposed to design a real-time note to coin converter machine.