Apparatus and method for distance measurement using ultrasonic waves
AssigneeSamsung Electronics Co., Ltd.
InventorsByung Hoon Ko, Jin Woo Choi, Seung Woo Noh, Sang Yun Park
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Abstract
An apparatus for distance measurement using ultrasonic waves may include: a memory configured to store an applied voltage profile that indicate voltages to be applied to a transducer at a plurality of different operational frequencies of transducer, a transducer including a transmitter configured to generate ultrasonic waves with a frequency modulated waveform, and a receiver configured to receive an echo signal reflected back from a measurement object; and a processor configured to control the transducer based on the applied voltage profile, and measure a distance to the measurement object based on the echo signal.
Claims20
An apparatus for distance measurement using ultrasonic waves, the apparatus comprising:
- a memory configured to store an applied voltage profile that indicate voltages to be applied to a transducer at a plurality of different operational frequencies of the transducer;
- the transducer comprising a transmitter configured to generate ultrasonic waves with a frequency modulated waveform, and a receiver configured to receive an echo signal reflected back from a measurement object;
- and
- a processor configured to control the transducer based on the applied voltage profile, and measure a distance to the measurement object based on the echo signal.
A method of distance measurement using ultrasonic waves, the method comprising:
- by a processor, controlling a transducer based on an applied voltage profile that indicate voltages to be applied to the transducer at a plurality of different operational frequencies of transducer;
- by the transducer, generating ultrasonic waves with a frequency modulated waveform while the transducer is controlled based on the applied voltage profile;
- by the transducer, receiving an echo signal reflected back from a measurement object;
- and
- by the processor, measuring a distance to the measurement object based on the echo signal.
A device comprising:
- a distance measurement apparatus configured to measure a distance to an object by using ultrasonic waves;
- and
- a processor configured to control the distance measurement apparatus based on distance information received from the distance measurement apparatus,
- wherein the distance measurement apparatus is configured to:
- store an applied voltage profile that indicate voltages to be applied to a transducer at a plurality of different operational frequencies of the transducer;
- control the transducer to generate ultrasonic waves with a frequency modulated waveform, and receive an echo signal reflected back from the object;
- and
- measure the distance to the object by using the echo signal.
Dependencies are inferred from the claim text.