BAROMETRIC PRESSURE SENSOR BASED ORIENTATION MEASUREMENT

摘要

Disclosed here are methods and systems that relate to determining an orientation of an object. The orientation of the object may be represented by an Euler angle which identifies a rotation of the object from a reference frame. The methods and systems may rely on readings collected from two or more barometric pressure sensors to estimate an altitude difference between the pressure sensors. The methods and systems may calculate the Euler angle based on the altitude difference.

主权项

1. A method of determining an orientation of a mobile device, the method comprising:
receiving readings from two pressure sensors mounted in the mobile device; determining, by a processor, an altitude difference between the two pressure sensors based on the received readings; comparing the altitude difference to a threshold value; determining that the mobile device is in a first orientation when the altitude difference is above the threshold value, and determining that the mobile device is in a second orientation when the altitude difference is below the threshold value.