Title :
A digital tilt converter for three-axis accelerometers
Author :
Chun-Liang Hsu ; Wen-Cheng Chou ; Wen-Yen Lin
Author_Institution :
Dept. of Electr. Eng., Chang Gung Univ., Taoyuan, Taiwan
Abstract :
Three-axis accelerometers have been widely used not only in motion sensing but also in tilting sensing nowadays. The tilting angle conversions from 3D acceleration data involves with complicated mathematic calculations such as multiplication, division, square-root and trigonometric functions. Indeed, the conversion can be done by only using simple addition, subtraction, and shifting operations through our proposed 2DCORDIC based tilt sensing algorithm. In this work, a hardware framework of this algorithm is realized, validated by FPGA development board, and tested through I2C interface with a microcontroller and a 3-axis digital accelerometer.
Keywords :
accelerometers; convertors; digital arithmetic; field programmable gate arrays; mathematical analysis; microcontrollers; motion measurement; signal processing; 2D-CORDIC; 3D acceleration data; FPGA; I2C interface; digital tilt converter; division function; mathematic calculation; microcontroller; motion sensing; multiplication function; square-root function; three-axis digital accelerometer; tilt sensing algorithm; tilting angle conversion; trigonometric function; Accelerometers; Engines; Field programmable gate arrays; Hardware; Microcontrollers; Sensors; Vectors;
Conference_Titel :
Consumer Electronics (ISCE), 2013 IEEE 17th International Symposium on
Conference_Location :
Hsinchu
Print_ISBN :
978-1-4673-6198-9
DOI :
10.1109/ISCE.2013.6570178
