2014/10/16 上午 08:09:24

android Programming Glossary: accelerometers

How to get the rotation between accelerometer's axis and motion vector?

http://stackoverflow.com/questions/10207044/how-to-get-the-rotation-between-accelerometers-axis-and-motion-vector

acceleration even once as the error is abyssal on cheap accelerometers otherwise it would be pretty easy to perform I think . EDIT..

Different values between sensors TYPE_ACCELEROMETER/TYPE_MAGNETIC_FIELD and TYPE_ORIENTATION

http://stackoverflow.com/questions/4174389/different-values-between-sensors-type-accelerometer-type-magnetic-field-and-type

directly. We call those Euler angles BTW . Instead it uses accelerometers and magnetometers both of which produce 3 space XYZ vectors...

How to calculate distance based on phone acceleration

http://stackoverflow.com/questions/4329164/how-to-calculate-distance-based-on-phone-acceleration

vector is gravity is the hard part. BTW gravity is how accelerometers can detect tilt. So however you do it unless you can calculate.. it unless you can calculate the tilt independently of the accelerometers for example with the help of gyros your code will mostly be.. Even nuclear submarines equipped with high precision accelerometers and gyros because GPS doesn't work under water need to periodically..

What is the real world accuracy of phone accelerometers when used for positioning?

http://stackoverflow.com/questions/6027724/what-is-the-real-world-accuracy-of-phone-accelerometers-when-used-for-positionin

is the real world accuracy of phone accelerometers when used for positioning I am working on an application where..

how to calculate phone's movement in the vertical direction from rest?

http://stackoverflow.com/questions/6291110/how-to-calculate-phones-movement-in-the-vertical-direction-from-rest

I have already gone through the articles about sensors and accelerometers but I couldn't really find anything to help me with that. Anyone..

How to use Accelerometer to measure distance for Android Application Development

http://stackoverflow.com/questions/6352681/how-to-use-accelerometer-to-measure-distance-for-android-application-development

with no GPS What is the real world accuracy of phone accelerometers when used for positioning how to calculate phone's movement..

Indoor Positioning System based on Gyroscope and Accelerometer

http://stackoverflow.com/questions/7499959/indoor-positioning-system-based-on-gyroscope-and-accelerometer

gyroscope share improve this question Gyros and accelerometers are not enough. You get position by integrating the linear acceleration..

Android accelerometer not working when screen is turned off

http://stackoverflow.com/questions/9982433/android-accelerometer-not-working-when-screen-is-turned-off

accelerometer hardware. As of now I found out that the accelerometers do not send events when the screen is off so even when I grab.. and some of them reported they receive events from the accelerometers when the screen is turned off. I read on some forums that this..

How to get the rotation between accelerometer's axis and motion vector?

http://stackoverflow.com/questions/10207044/how-to-get-the-rotation-between-accelerometers-axis-and-motion-vector

or a matrix . Such a method has to avoid integrating the acceleration even once as the error is abyssal on cheap accelerometers otherwise it would be pretty easy to perform I think . EDIT Magnetometer and Gyroscope help you to find the device's orientation..

Different values between sensors TYPE_ACCELEROMETER/TYPE_MAGNETIC_FIELD and TYPE_ORIENTATION

http://stackoverflow.com/questions/4174389/different-values-between-sensors-type-accelerometer-type-magnetic-field-and-type

inclinometers so it doesn't measure azimuth pitch or roll directly. We call those Euler angles BTW . Instead it uses accelerometers and magnetometers both of which produce 3 space XYZ vectors. These are used to compute the azimuth etc. values. Vectors..

How to calculate distance based on phone acceleration

http://stackoverflow.com/questions/4329164/how-to-calculate-distance-based-on-phone-acceleration

10m s s due to gravity. Figuring out which part of your vector is gravity is the hard part. BTW gravity is how accelerometers can detect tilt. So however you do it unless you can calculate the tilt independently of the accelerometers for example.. is how accelerometers can detect tilt. So however you do it unless you can calculate the tilt independently of the accelerometers for example with the help of gyros your code will mostly be measuring tilt instead of distance. HA I just realized from.. the other unless the angle of tilt itself is constantly tracked. Even nuclear submarines equipped with high precision accelerometers and gyros because GPS doesn't work under water need to periodically surface and sync with GPS to correct this drift. Second..

What is the real world accuracy of phone accelerometers when used for positioning?

http://stackoverflow.com/questions/6027724/what-is-the-real-world-accuracy-of-phone-accelerometers-when-used-for-positionin

is the real world accuracy of phone accelerometers when used for positioning I am working on an application where I would like to track the position of a mobile user inside..

how to calculate phone's movement in the vertical direction from rest?

http://stackoverflow.com/questions/6291110/how-to-calculate-phones-movement-in-the-vertical-direction-from-rest

between point A and point B how would i calculate that I have already gone through the articles about sensors and accelerometers but I couldn't really find anything to help me with that. Anyone have any ideas android accelerometer compass geolocation..

How to use Accelerometer to measure distance for Android Application Development

http://stackoverflow.com/questions/6352681/how-to-use-accelerometer-to-measure-distance-for-android-application-development

this video. Similar questions track small movements of iphone with no GPS What is the real world accuracy of phone accelerometers when used for positioning how to calculate phone's movement in the vertical direction from rest iOS Movement Precision in..

Indoor Positioning System based on Gyroscope and Accelerometer

http://stackoverflow.com/questions/7499959/indoor-positioning-system-based-on-gyroscope-and-accelerometer

Thank you for your help android location position accelerometer gyroscope share improve this question Gyros and accelerometers are not enough. You get position by integrating the linear acceleration twice but the error is horrible. It is useless in..

Android accelerometer not working when screen is turned off

http://stackoverflow.com/questions/9982433/android-accelerometer-not-working-when-screen-is-turned-off

in computer science and currently I am fetching data from accelerometer hardware. As of now I found out that the accelerometers do not send events when the screen is off so even when I grab a wakelock from within one of my programs I can verify that.. the same gingerbread version but from other cellphone brands and some of them reported they receive events from the accelerometers when the screen is turned off. I read on some forums that this bug I consider it a bug since when I acquire a Wakelock I..