Inertial Combo Sensors in Consumer and Automotive - I-Micronews
Inertial Combo Sensors in Consumer and Automotive - I-Micronews
Inertial Combo Sensors in Consumer and Automotive - I-Micronews
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Executive Summary<br />
Typology of <strong>Combo</strong> <strong>Sensors</strong><br />
•Gyros comb<strong>in</strong>ed with accelerometers<br />
make sense for some functions such as<br />
gam<strong>in</strong>g <strong>and</strong> navigation<br />
•Similar manufactur<strong>in</strong>g platforms <strong>and</strong><br />
constra<strong>in</strong>ts for <strong>in</strong>tegration potentially real<br />
cost <strong>and</strong> size benefit<br />
•=> expected to surge quickly<br />
•2010: about 5% of magnetometers are embedded <strong>in</strong> such Accel /<br />
Magneto modules<br />
•Challenges: compass location (<strong>in</strong>terferences…), cost, footpr<strong>in</strong>t<br />
•Should ga<strong>in</strong> success for tablets <strong>and</strong> mobile phones <strong>in</strong> the next few years<br />
3-axis<br />
accelerometer<br />
IMU: 3A + 3M<br />
3A + 3G<br />
3A + 3G<br />
+ 3M<br />
3-axis<br />
gyroscope<br />
3-axis digital<br />
compass<br />
© 2011• 6<br />
•Overcome the problems of 3A+3G (loose absolute orientation over time) <strong>and</strong> 3A+3M (corruption of data if<br />
external magnetic field <strong>and</strong> slow detection of change <strong>in</strong> head<strong>in</strong>g)<br />
•Long term view: limited number of functions us<strong>in</strong>g those 3 sensors at the same time<br />
•Monolithic <strong>in</strong>tegration should be developed to reach the cost <strong>and</strong> size targets<br />
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