US 10,209,110 B2 · Ultrasonic sensor for displacement, vibration, linear and rotational speed and position, and fluid flow measurement

Abstract

This application discloses a new ultrasonic measurement technique to measure the velocity and displacement of the objects. Minimizing the effect of amplitude modulation from ultrasonic phase and amplitude extraction system, is a novel approach to significantly improve the accuracy and precision of the measurements. The possibility of the measurements using a single ultrasonic transducer functioning as a transmitter and receiver in continuous measurement, may be a significant advantage of this measurement technique over conventional methods. The ability of doing measurement on the objects much smaller than the wave wavelength may be an advantage of this innovative measurement technique comparing with contemporary ultrasonic measurement systems that are limited by the wavelength of the sound. Applications for this novel measurement system are also disclosed in this application.

Claims21

Dependent claims

A displacement and/or velocity measurement sensor, wherein said sensor comprises:

an acoustic transducer functioning as a transmitter and also a receiver simultaneously, wherein said acoustic transducer sends a wave that is being reflected back from an under test target, wherein a portion of said wave returns back to said acoustic transducer and being received by said acoustic transducer as a received signal,
an oscillator for generating an oscillator signal for said acoustic transducer,
a first system to extract said received signal from a signal on acoustic transducer (transducer signal),
a second system to eliminate the modulated amplitude from the received signal, resulting in a normalized amplitude signal,
a third system to extract a phase and/or frequency data of said normalized amplitude signal, resulting in a phase/frequency signal,
a fourth system to translate said extracted phase/frequency signal to distance or velocity, or both (distance/velocity signal).

3 more elements

A displacement and/or velocity measurement sensor, wherein said sensor comprises:

two acoustic transducers, wherein a first acoustic transducer functions as a transmitter and a second acoustic transducer functions as a receiver, wherein said transmitter sends a wave that is being reflected back from an under test target, wherein a portion of said wave returns back to said receiver and being received by said receiver as a received signal,
an oscillator for generating an oscillator signal for said first acoustic transducer,
a sixth system to eliminate the modulated amplitude from said received signal, resulting a normalized amplitude signal,
a seventh system to extract a phase and/or frequency data of said normalized amplitude signal, resulting in a phase/frequency signal,
an eighth system to translate said extracted phase/frequency signal to distance or velocity, or both (distance/velocity signal).

2 more elements

Dependencies are inferred from the claim text.

Ultrasonic sensor for displacement, vibration, linear and rotational speed and position, and fluid flow measurement

Life of this patent

Ultrasonic sensor for displacement, vibration, linear and rotational speed and position, and fluid flow measurement

Life of this patent

Abstract

Claims21