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Ultrasonic ranging sensor using simultaneous emissions from different transducers.

Alvaro Hernández1, Jesús Ureña, Juan J García

  • 1Electronics Department, University of Alcalá, Alcalá de Henares, 28806 Madrid, Spain. alvaro@depeca.uah.es

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
|February 5, 2005
PubMed
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This study introduces multimode ultrasonic signal processing using Golay complementary sequences, enhancing scan rates and precision. The novel approach enables simultaneous measurements and reliable obstacle detection without cross-talk, implemented on a field-programmable gate array.

Area of Science:

  • Ultrasound technology
  • Signal processing
  • Sensor systems

Background:

  • Multiple ultrasonic transducers are combined to form global sensors in recent applications.
  • Various signal processing methods exist for ultrasonic data.
  • Challenges include scan rate, precision, reliability, and cross-talk between transducers.

Purpose of the Study:

  • To propose and implement multimode techniques using Golay complementary sequences for ultrasonic signal processing.
  • To enhance the performance of ultrasonic sensor systems in terms of speed, accuracy, and dependability.
  • To enable simultaneous measurements and robust obstacle detection without interference.

Main Methods:

  • Utilizing Golay complementary sequences for signal processing.

Related Experiment Videos

  • Developing multimode techniques for enhanced ultrasonic data analysis.
  • Real-time implementation of the algorithm on a field-programmable gate array (FPGA) device.

    • Main Results:

    • Achieved increased scan rate, precision, and reliability in ultrasonic measurements.
    • Demonstrated capability for echo discrimination, allowing simultaneous measurements.
    • Successfully detected the same obstacle using different transducers without cross-talk issues.

    Conclusions:

    • The proposed multimode technique using Golay complementary sequences offers significant improvements for ultrasonic signal processing.
    • Real-time implementation on FPGA facilitates practical application of the advanced algorithm.
    • The method enhances the overall performance and reliability of ultrasonic sensor systems.