Touchscreen Multiuser Detection

Project number
16027
Organization
Elo Touch Solutions
Academic year
2016-2017
The team was charged with developing and building a system that identifies touch events on a touch screen by four individual users. The team’s solution is an amplitude-modulated bit-sequence injected through the user’s hand using a programmable signal generator.

The signal propagates into the screen as the user interacts with the touch device. Once detected, the propagated signal is decoded and associated with a unique ID that corresponds to one of the four users touching the screen. The final system comprises two function generators that send the designed signals, a touch screen provided by the sponsor, and a laptop to run the code written by the team.

This technology can be easily integrated, using software programs such as C++ and Matlab, into touch-screen applications such as those used in corporate collaboration and in the gaming industry.

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