Automatic frequency tracking system for needle actuating device

Lin Gui, Rui Xiao, Xiaochun Liao, Yang Kuang, Muhammad Sadiq, Zeng Chunnian, Sandy Cochran, Zhihong Huang

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    2 Citations (Scopus)

    Abstract

    Resonant frequency shift can occur during operation in the application of ultrasonic actuating device. It affects the resonance amplitude and therefore the performance of the device. To solve this problem, an automatic frequency tracking system based on embedded technology was developed. It has the ability to automatically track the resonant frequency shift in response to the load and adjust the excitation frequency accordingly to optimize the performance of the ultrasonic actuating device. The tracking algorithm realized by stm32 ARM processor ensures flexibility to suit different transducers and load conditions. The data acquisition module and serial port can achieve real time operation parameters monitoring and storage on PC. The effectiveness of this frequency tracking system is tested in a trial study of needle visualization during anesthesia procedure using needle actuating device. Results show that the visibility of the needle is greatly improved throughout needle insertion.

    Original languageEnglish
    Title of host publication2014 IEEE International Ultrasonics Symposium, IUS
    PublisherIEEE Computer Society
    Pages815-818
    Number of pages4
    ISBN (Print)9781479970490
    DOIs
    Publication statusPublished - 20 Oct 2014
    Event2014 IEEE International Ultrasonics Symposium, IUS 2014 - Chicago, United States
    Duration: 3 Sep 20146 Sep 2014

    Conference

    Conference2014 IEEE International Ultrasonics Symposium, IUS 2014
    CountryUnited States
    CityChicago
    Period3/09/146/09/14

    Keywords

    • Embedded system
    • Needle actuating device
    • Resonant frequency tracking

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