期刊名称：Signal & Image Processing : An International Journal (SIPIJ)
印刷版ISSN：2229-3922
电子版ISSN：0976-710X
出版年度：2016
卷号：7
期号：6
页码：1
出版社：Academy & Industry Research Collaboration Center (AIRCC)
摘要：Today, coins are used to operate many electric devices that are open to the public service. Washingmachines, play stations, computers, auto brooms, foam machines, beverage machines, telephone chargers,hair dryers and water heaters are some examples of these devices These devices include coin recognitionsystems. In these systems, there are coils at two different radius, which become electromagnets when thecurrent is passed through them. The AC current supplied to the coils creates a variable magnetic field,which induces the eddy current on the coil during the passing of money. The magnetic field generated bythe Eddy current reduces the current passing through the coil. The amount of change of current in the coilgives information about the coin; the type of metal (element) and the amount of metal (element). In thisstudy, a new coin identification system (magnetic measurement system) is designed. In this system, themagnetic anomaly generated by the coin as a result of applying direct current to the coils is tried to bedetected by fluxgate sensor. In this study, sensor voltages are acquired in computer environment by usingdeveloped electronic unit and LabVIEW based software. In the paper, experimental results have beendiscussed in detail.
关键词：Metal money; Coil Detection; Eddy current; Fluxgate sensor; Magnetic anomaly
