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Electronic Distance Measuring Instruments01:30

Electronic Distance Measuring Instruments

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Electronic Distance Measuring Instruments (EDMs) are essential tools in modern surveying, offering precise distance measurements by emitting electromagnetic signals and calculating the time required for these signals to travel to a target and return. Two primary types of signals are used in EDMs — light waves and microwaves — each suited to specific environmental and distance requirements. Light-wave-based EDMs utilize either infrared or laser light, providing high accuracy over...
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Related Experiment Video

Updated: Apr 26, 2026

Measurement of Bioelectric Current with a Vibrating Probe
07:28

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Published on: January 4, 2011

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[A new parameter measurement system for electrosurgery output].

Yu Zhou, Dianli Li, Wendong Xu

    Sheng Wu Yi Xue Gong Cheng Xue Za Zhi = Journal of Biomedical Engineering = Shengwu Yixue Gongchengxue Zazhi
    |July 22, 2014
    PubMed
    Summary

    A new PC-based system accurately measures electrosurgery voltage and current. This reliable parameter measurement system provides essential data for developing intelligent electrosurgery with feedback functions.

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    Area of Science:

    • Biomedical Engineering
    • Medical Instrumentation

    Background:

    • Accurate measurement of electrosurgery voltage and current is crucial for developing feedback-controlled electrosurgery devices.
    • Existing systems may lack the precision required for advanced electrosurgical applications.

    Purpose of the Study:

    • To develop a precise parameter measurement system for electrosurgery.
    • To establish a foundation for intelligent electrosurgery systems utilizing real-time feedback.

    Main Methods:

    • A PC-based system was developed to measure high voltage and current from electrosurgery.
    • Signal conditioning involved transformers, amplification, filtering, and conversion to Root Mean Square (RMS) signals.
    • Data acquisition utilized a DAQ card for digitization, with processing, sampling, display, and storage managed by Labview software.

    Main Results:

    • The developed measurement system demonstrated steady and correct measurement of electrosurgery output parameters.
    • Experimental results confirmed the system's reliability and accuracy.

    Conclusions:

    • The successful development of this parameter measurement system provides a basis for future embedded systems.
    • Accurate feedback information from this system can significantly advance the development of intellectual electrosurgery.