The design and implementation of multi-touch screen system based on FTIR theory

This paper describes a multi-touch screen system design based on FTIR theory. We describe FTIR phenomena and give the mathematical explanation. And we introduce our innovation hardware design including the structure of multi-touch screen. LabVIEW is used as a processing tool in software design of multi-touch screen system. At last, we show our practical experimental system, and the system is proved to be reasonable, operation smoothly and low cost.