Acceleration sensor and method for detecting an acceleration
First Claim
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1. An acceleration sensor, comprising:
- a mass, which is deflectable in a first direction and a second direction opposite to the first direction;
a driver, which is effective to vibrate the mass;
a detector for detecting times when the mass passes a predetermined position when an acceleration is applied;
an evaluator, which detects the acceleration based on the detected times during acceleration and times when the mass passes the predetermined position when no acceleration is applied.
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Abstract
An acceleration sensor comprises a mass, which can be deflected in a first direction and a second direction opposite to the first direction, a driving means effective to vibrate the mass, a detection means for detecting times when the mass passes a predetermined position when an acceleration is applied, and an evaluation means which detects the acceleration based on the detected times during acceleration and times when the mass passes the predetermined position when no acceleration is applied. Thereby, it is achieved that the acceleration is detected inexpensively and accurately.
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Citations
8 Claims
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1. An acceleration sensor, comprising:
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a mass, which is deflectable in a first direction and a second direction opposite to the first direction;
a driver, which is effective to vibrate the mass;
a detector for detecting times when the mass passes a predetermined position when an acceleration is applied;
an evaluator, which detects the acceleration based on the detected times during acceleration and times when the mass passes the predetermined position when no acceleration is applied. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for detecting an acceleration based on a vibrating mass, comprising the steps of:
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vibrating the mass;
detecting times when the mass passes a predetermined position when an acceleration is applied;
detecting the acceleration based on the detected times during acceleration and times when the mass passes the predetermined position when no acceleration is applied. - View Dependent Claims (8)
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Specification