Traditional Culture Encyclopedia - Traditional culture - What are the electronic compasses and gyroscopes for mobile phones?
What are the electronic compasses and gyroscopes for mobile phones?
Compared with the traditional compass, the electronic compass of mobile phone has the advantages of low energy consumption, small volume, light weight, high precision and miniaturization, and its output signal can be digitally displayed by processing.
The electronic compass of mobile phone can effectively compensate the GPS signal, ensure that the navigation orientation information 100% is effective, and it can work normally even if the GPS signal is out of lock, so as to "lose the star and not get lost".
Mobile phone gyroscope, also called angular velocity sensor, is mainly used in automobile navigation, position control and attitude control of moving objects and other occasions where accurate angle measurement is needed.
Mobile phone gyroscope is a device for sensing and keeping direction, which is designed based on the theory of angular momentum immortality. Once the gyroscope starts to rotate, it tends to resist the change of direction because of the angular momentum of the wheel.
Extended data:
Application occasions of electronic compass
1, horizontal and vertical hole survey, underwater exploration;
2, aircraft navigation, navigation system, speed measurement, simulation system, GPS backup, car compass, virtual reality;
3, scientific research, education and training, building positioning, equipment maintenance.
Baidu encyclopedia _ electronic compass
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