Vibration device and vibration method
AssigneeMurata Manufacturing Co., Ltd.
InventorsYuka TANAKA, Noritaka KISHI, Takahide NAKADOI, Katsuhiro TABUCHI
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Abstract
A vibration device includes a light transmitter, a vibrator to vibrate the light transmitter, a driver to drive the vibrator, and a controller configured or programmed to control the driver and determine a high-frequency-band resonant frequency of the vibrator according to a state of the driver obtained by changing a drive frequency of the driver within a high frequency band higher than or equal to about 100 kHz, and estimate a temperature of the light transmitter from the determined high-frequency-band resonant frequency.
Claims18
A vibration device comprising:
- a light transmitter;
- a vibrator to vibrate the light transmitter;
- a driver to drive the vibrator;
- and
- a controller configured or programmed to control the driver and determine a high-frequency-band resonant frequency of the vibrator according to a state of the driver obtained by changing a drive frequency of the driver within a high frequency band higher than or equal to about 100 kHz, and estimate a temperature of the light transmitter from the determined high-frequency-band resonant frequency.
A vibration method performed by a vibration device including a light transmitter, a vibrator to vibrate the light transmitter, a driver to drive the vibrator, and a controller configured or programmed to control the driver, the vibration method comprising:
- determining, in the controller, a high-frequency-band resonant frequency of the vibrator, according to a state of the driver obtained by changing a drive frequency of the driver within a high frequency band higher than or equal to about 100 KHz;
- and
- estimating, in the controller, a temperature of the light transmitter from the determined high-frequency-band resonant frequency.
Dependencies are inferred from the claim text.