Title :
The ARM based hardware system of infrared multi-touch screen design and research
Author :
Li Qing ; Fang Hongliang ; Zhang Pengyun ; Chi Jiannan
Author_Institution :
Sch. of Autom. & Electr. Eng., Univ. of Sci. & Technol. Beijing, Beijing, China
Abstract :
In this paper, we designed for infrared multi-touch screen hardware system, aiming to the existing infrared multi-touch screen, which sensitive to highlight interference, low resolution and hard to solve multipoint issues and so on. We use the ARM kernel SCM 74HC595 to drive the infrared emission tube one by one, and process the infrared receiver tubes information through I2C Bus, in order to implement multipoint identification. In the design, the infrared light of filtered environment is used to implement the anti-glare interference; the quantized collected signals are used to achieve the high-resolution effect; and by determined the sequencing of touch-point to achieve multi-point identification. The Experiment results show the validity of our design for system.
Keywords :
human computer interaction; microcontrollers; touch sensitive screens; ARM kernel SCM 74HC595; ARM-based hardware system; I2C bus; antiglare interference; filtered environment; high-resolution effect; highlight interference; infrared emission tube; infrared light; infrared multitouch screen hardware system; infrared receiver tubes; low resolution; multipoint identification; multipoint issues; quantized collected signals; touch-point sequence; Electron tubes; Hardware; Human computer interaction; Interference; Optical filters; Receivers; Resistors; ARM; Hardware system; Human computer interaction; Infrared; Multi-touch;
Conference_Titel :
Control and Decision Conference (CCDC), 2012 24th Chinese
Conference_Location :
Taiyuan
Print_ISBN :
978-1-4577-2073-4
DOI :
10.1109/CCDC.2012.6244237
