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
- Patent Title: Capacitance detector for accelerometer and gyroscope and accelerometer and gyroscope with capacitance detector
- Patent Title (中): 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
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Application No.: US13162883Application Date: 2011-06-17
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Publication No.: US09069005B2Publication Date: 2015-06-30
- Inventor: Richard C. Ruby
- Applicant: Richard C. Ruby
- Applicant Address: SG Singapore
- Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
- Current Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
- Current Assignee Address: SG Singapore
- Main IPC: G01P15/125
- IPC: G01P15/125 ; G01P15/08 ; G01C19/5776

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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