In fact, gyroscopes in our mobile phones and other electronic products do not look like this. Like the acceleration sensor, it is also a microelectronic element. Using Coriolis force, through the motion offset of the continuously vibrating vibrator in the rotating system, it changes the circuit state and causes the change of relevant electrical parameters, so as to reflect the movement of left-right tilt, back and forth tilt and left-right swing.
What is Coriolis force? Suppose there is a player at point O in the center of a counterclockwise rotating disc (point O does not move), who wants to pass the basketball to another player standing at point a on the edge. When he pitches along the straight line of OA, the player at point a will find that the basketball deflects to the right and finally falls at point a '. With the rotating disc as the reference frame, the basketball seems to be subjected to a force to the right, which offsets. This force is called Coriolis force.
As an integrated sensor module, the nine axis sensor reduces the circuit board and overall space, and is more suitable for lightweight and portable electronic devices and wearable products. In addition to the accuracy of the device itself, the data accuracy of the integrated sensor also involves the correction after welding and assembly, as well as the supporting algorithms for different applications. The appropriate algorithm can fuse the data from multiple sensors, which makes up for the lack of a single sensor in calculating the accurate position and direction, so as to achieve high-precision motion detection.