1 results about "Capacitive accelerometer" patented technology

This application discloses a real-time self-testing method and system for a capacitive accelerometer, relating to the field of accelerometers. The method includes: applying a fixed-phase excitation signal to an upper fixed electrode; applying an excitation signal that switches back and forth between a first phase state and a second phase state to a lower fixed electrode; wherein, in the first phase state, the excitation signal of the lower fixed electrode is in phase with the excitation signal of the upper fixed electrode, and in the second phase state, the excitation signal of the lower fixed electrode is out of phase with the excitation signal of the upper fixed electrode; in the first phase state, acquiring a first current signal output by a movable sensitive mass; in the second phase state, acquiring a second current signal output by the movable sensitive mass; and performing a self-test on the accelerometer based on the first and second current signals. Real-time self-testing of the accelerometer is achieved through phase transformation.