Object detection device
AssigneeMurata Manufacturing Co., Ltd.
InventorsShinichi Sasaki, Takaaki Asada, Yuuma Watabe
Life of this patent
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Abstract
An object detection device includes a transmitter to generate an acoustic wave as a signal wave based on a predetermined transmission signal and transmit the signal wave toward an object, a receiver provided separately from the transmitter and to receive the acoustic wave to generate a reception signal, and a controller to generate the transmission signal to control the signal wave from the transmitter. The receiver has frequency characteristics such that the reception signal fluctuates when the receiver resonates. The transmission signal is set according to the frequency characteristics of the receiver to reduce or prevent a resonance of the receiver at a time of reception of the signal wave from the transmitter.
Claims14
An object detection device to detect an object by transmitting and receiving an acoustic wave, the object detection device comprising:
- a transmitter to generate the acoustic wave as a signal wave based on a predetermined transmission signal and transmit the signal wave toward the object;
- a receiver provided separately from the transmitter and to receive the acoustic wave to generate a reception signal;
- and
- a controller configured or programmed to generate the transmission signal to control the signal wave transmitted from the transmitter;
- wherein
- the receiver has frequency characteristics such that the reception signal fluctuates when the receiver resonates;
- and
- the transmission signal is set according to the frequency characteristics of the receiver to reduce or prevent resonance of the receiver at a time of reception of the signal wave from the transmitter.
Dependencies are inferred from the claim text.