Method and device for detecting elasticity of viscous elastic medium

  • US 9,554,771 B2
  • Filed: 10/14/2010
  • Issued: 01/31/2017
  • Est. Priority Date: 10/15/2009
  • Status: Active Grant
First Claim
Patent Images

1. A method for detecting an elasticity of a viscoelastic medium, comprising steps of:

  • a) detecting with a pressure sensor array a pressure applied to the viscoelastic medium by an ultrasonic transducer probe;

    b) detecting with the pressure sensor array a verticality of the ultrasonic transducer probe relative to the viscoelastic medium;

    c) in response to the detected pressure and the detected verticality satisfying preset conditions, driving the ultrasonic transducer probe with a vibration by a vibrator so as to produce an elastic wave to be propagated in the viscoelastic medium, transmitting an ultrasonic wave to the viscoelastic medium by the ultrasonic transducer probe at a pulse repetition frequency of 100 Hz-100000 Hz, and collecting through the ultrasonic transducer probe an ultrasonic echo returned from the viscoelastic medium and corresponding to the transmitted ultrasonic wave;

    d) selecting an effective ultrasonic echo from the ultrasonic echo according to a duration of the vibration and physical parameters of the viscoelastic medium, wherein the ultrasonic transducer probe stops vibrating and the elastic wave is propagated in the viscoelastic medium at a moment corresponding to the effective ultrasonic echo;

    e) calculating a propagation velocity of the elastic wave in the viscoelastic medium according to the effective ultrasonic echo; and

    f) calculating the elasticity of the viscoelastic medium according to the propagation velocity of the elastic wave.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×