Multi-layer Level Measurement Using Adaptive Filtering

  title={Multi-layer Level Measurement Using Adaptive Filtering},
  author={J.I.S. de Oliveira and S. Y. C. Catunda and A. K. Barros and J.-F. Naviner},
  journal={2005 IEEE Instrumentationand Measurement Technology Conference Proceedings},
In several applications the measurement of the levels of multi-layer liquids cannot be carried out using sensors in direct contact with the substances. In these cases, one alternative is to use contactless ultrasonic transducers and measure the time-of-flight of the echoes produced by the reflection of a known signal by the different layers. We propose a measurement system for using with ultrasonic transducers that is composed by an adaptive filter for noise cancellation and cross-correlation… CONTINUE READING


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