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

fYear

2013

fDate

3-6 June 2013

Firstpage

19

Lastpage

20

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Consumer Electronics (ISCE), 2013 IEEE 17th International Symposium on

Conference_Location

Hsinchu

ISSN

0747-668X

Print_ISBN

978-1-4673-6198-9

Type

conf

DOI

10.1109/ISCE.2013.6570178

Filename

6570178