An experimental instrumentation system for monitoring long lengths of traffic railings to detect encroaching vehicles and measuring impact condition has been developed and subjected to preliminary evaluation. The system makes use of the traffic railing as part of a transmission line carrying two radiofrequency waves. The radiofrequency energy reflected from vehicles entering the electromagnetic field about the line is detected and used to determine vehicular speed, direction, angle, location, path and size. A solid-state, digital data acquisition system is triggered by a detected encroachment to record pertinent data. Capability to record data on up to 50 encroachments is available. Computer data processing generates plots of vehicle path and tabulates data on time, speed, angle, location of encroachment, vehicle size and nature of encroachment.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Guardrail Encroachment Monitor--GEM. Summary Report


    Contributors:
    J. D. King (author) / S. A. Cerwin (author)

    Publication date :

    1981


    Size :

    48 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




    Guardrail Encroachment Monitor--GEM

    J. D. King / S. A. Cerwin | NTIS | 1981


    DRONE ENCROACHMENT AVOIDANCE MONITOR

    JUST TIMOTHY | European Patent Office | 2020

    Free access

    Drone encroachment avoidance monitor

    JUST TIMOTHY | European Patent Office | 2018

    Free access

    Drone encroachment avoidance monitor

    JUST TIMOTHY | European Patent Office | 2020

    Free access

    DRONE ENCROACHMENT AVOIDANCE MONITOR

    JUST TIMOTHY | European Patent Office | 2023

    Free access