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An interface to input analog signals to a remotely located computer.

H B Fackrell, A H Glasgow

    International Journal of Bio-Medical Computing
    |March 1, 1984
    PubMed
    Summary
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    This study introduces simple components enabling a single microprocessor to monitor multiple analog instruments. The system features remote communication and signal conditioning, protecting the analog-to-digital converter from over-voltage damage.

    Area of Science:

    • Instrumentation and Control Systems
    • Microprocessor Applications
    • Signal Processing

    Background:

    • Monitoring multiple analog instruments often requires complex interfaces.
    • Existing systems may lack robust protection for analog-to-digital converters.
    • Efficient signal conditioning is crucial for accurate data acquisition.

    Purpose of the Study:

    • To describe simple components for microprocessor-based analog instrument monitoring.
    • To enable remote communication between an operator and the microprocessor.
    • To enhance signal integrity and protect analog-to-digital converters.

    Main Methods:

    • Development of two key components for system integration.
    • Implementation of a remote control box with audio-visual feedback.

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  • Utilization of printed circuit board amplifiers for signal conditioning.
  • Incorporation of protective circuitry for analog-to-digital converters.

    • Main Results:

    • A single microprocessor can effectively monitor several analog instruments.
    • Remote operator communication is established via a dedicated control box.
    • Signal resolution is preserved through high-quality amplification.
    • The system provides offset adjustment, gain control, and over-range protection.

    Conclusions:

    • The described components offer a straightforward and effective solution for analog instrument monitoring.
    • The system enhances operational flexibility and data accuracy.
    • Protection of the analog-to-digital converter significantly improves system reliability and longevity.