STMi­cro­elec­tron­ics Brings Su­pe­rior In­door and Un­der­cover Nav­i­ga­tion to Mo­biles and Wear­ables

Dataquest - - IN­DUS­TRY -

Smart­phones, as well as smart­watches, fit­ness track­ers and other wear­ables are about to get bet­ter at guid­ing users and map­ping their sport­ing achieve­ments even where satel­lite nav­i­ga­tion can­not work, us­ing the lat­est elec­tronic com­pass (eCom­pass) from STMi­cro­elec­tron­ics, a global semi­con­duc­tor serv­ing cus­tomers across the spec­trum of elec­tron­ics ap­pli­ca­tions.

Fit­ness-track­ing smart­phone apps, smart­watches, and bands need con­tin­u­ous lo­ca­tion data for map­ping and record­ing, and ac­cu­racy is crit­i­cal for wear­ers who like to mon­i­tor their progress and share achieve­ments on­line. A built-in eCom­pass helps cal­cu­late lo­ca­tion when satel­lite sig­nals are un­avail­able, such as in­side build­ings or when run­ning or cycling un­der tree cover. How­ever, cur­rent so­lu­tions can give er­rors of about 10° in lat­i­tudes such as North­ern Italy or North­ern Cal­i­for­nia. This can put the user off course by 150 me­ters or more in ev­ery 1000 me­ters trav­eled.

ST’s LSM303AGRe Com­pass cuts the head­ing er­ror to less than 4°, lever­ag­ing the Com­pany’s pro­pri­etary tech­nol­ogy for man­u­fac­tur­ing high-ac­cu­racy magnetic sen­sors. This en­hanced ac­cu­racy, com­bined with ul­tralow-power op­er­a­tion con­sum­ing up to 50% less than com­pet­ing de­vices when in low-power mode, is par­tic­u­larly well suited to high-pre­ci­sion Pedes­trian Dead Reck­on­ing (PDR) on mo­bile de­vices.

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