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Measuring a spatiotemporal relationship between two of more positions of a vibratory element

  • US 10,571,322 B2
  • Filed: 04/10/2015
  • Issued: 02/25/2020
  • Est. Priority Date: 04/10/2015
  • Status: Active Grant
First Claim
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1. An emitter-sensor assembly (100) for measuring a spatiotemporal relationship between two or more positions of a vibratory element (12), comprising:

  • an emitter (110) substantially rigidly coupled to a first position (12a) of the vibratory element (12), the emitter (110) configured to emit electro-magnetic radiation (112) towards a second position (12b) of the vibratory element (12);

    a sensor (120) substantially rigidly coupled to the first position (12a) of the vibratory element (12), the sensor (120) configured to receive the electro-magnetic radiation (112) reflected from the second position (12b) of the vibratory element (12); and

    a meter electronics (20) configured to determine a phase difference between oscillations of the vibratory element (12) at the first position (12a) and oscillations of the vibratory element (12) at the second position (12b) based on the electro-magnetic radiation (112) received.

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