Invention Grant
US09069005B2 Capacitance detector for accelerometer and gyroscope and accelerometer and gyroscope with capacitance detector 有权
用于加速度计和陀螺仪的电容检测器,带电容检测器的加速度计和陀螺仪

Capacitance detector for accelerometer and gyroscope and accelerometer and gyroscope with capacitance detector
Abstract:
A capacitance-to-frequency converter is configured to convert a difference between first and second capacitances produced of a teeter-totter capacitive transducer as a result of a rotational force being applied to the teeter-totter capacitive transducer to a first signal having a first frequency that is a function of the rotational force, and to convert a sum of the first and second capacitances produced as a result of an acceleration force to a second signal having a second frequency that is a function of the acceleration force. The capacitance-to-frequency converter includes a first oscillator having a first oscillator frequency that changes in response to a change in the first capacitance; a second oscillator having a second oscillator frequency that changes in response to a change in the second capacitance; and a mixer having first and second mixer inputs connected outputs of the first and second oscillators.
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