Method and system of exciting a driving vibration in a vibrator
First Claim
1. A method of exciting a driving vibration in a vibrator for outputting a detection signal generated based on said driving vibration and a physical value and for measuring said physical value based on said detection signal, wherein said driving vibration is excited using a circuit for self-excited vibration comprising a CR oscillator:
- said method comprising the step of;
applying an activating signal of rectangular wave on said vibrator using said CR oscillator to start said driving vibration.
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Accused Products
Abstract
An object of the present invention is to reduce a rise time required for stabilizing the vibration state of a vibrator and the scale of a circuit needed for the activation of a driving vibration in exciting the driving vibration in the vibrator. A driving vibration is excited in a vibrator 1 for outputting a detection signal generated based on the driving vibration and a physical value, and the physical value is measured based on the detection signal. The driving vibration is excited using a circuit 9A for self-excited vibration having a CR oscillator 5A to generate an oscillation loop together with the vibrator 1. An activating signal of rectangular wave is applied on the vibrator 1 using the CR oscillator 5A to start the driving vibration in the vibrator 1.
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Citations
4 Claims
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1. A method of exciting a driving vibration in a vibrator for outputting a detection signal generated based on said driving vibration and a physical value and for measuring said physical value based on said detection signal, wherein said driving vibration is excited using a circuit for self-excited vibration comprising a CR oscillator:
- said method comprising the step of;
applying an activating signal of rectangular wave on said vibrator using said CR oscillator to start said driving vibration.
- said method comprising the step of;
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2. A system of exciting a driving vibration in a vibrator for outputting a detection signal generated based on said driving vibration and a physical value and for measuring said physical value based on said detection signal,
said system comprising a circuit for self-excited vibration for exciting said driving vibration, said circuit comprising a CR oscillator for applying an activating signal of rectangular wave on said vibrator to start said driving vibration.
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3. A method of exciting a driving vibration in a vibrator for outputting a detection signal generated based on said driving vibration and a physical value and for measuring said physical value based on said detection signal, wherein said driving vibration is excited using a circuit for self-excited vibration comprising a ring oscillator:
- said method comprising the step of;
applying an activating signal of rectangular wave on said vibrator using said ring-oscillator to start said driving vibration.
- said method comprising the step of;
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4. A system of exciting a driving vibration in a vibrator for outputting a detection signal generated based on said driving vibration and a physical value and for measuring said physical value based on said detection signal,
said system comprising a circuit for self-excited vibration for exciting said driving vibration, said circuit comprising a ring oscillator for applying an activating signal of rectangular wave on said vibrator to start said driving vibration.
Specification