This paper is presented in two parts. The first part descibes some of the findings of the programme of laboratory investigations into the fundamental properties of Vibracoax piezo-electric axle load sensors. After a brief outline of the composition and theory of operation of the sensors, some causes of variations in sensor sensitivity are examined. Sensor mountings are idenetified as a major cause of inconsistencies in signals produced by specific wheel loads, though significant problems have also been associated with non-uniformities along the lengths of unmounted cables. The development of new mounting techniques for piezo-electric axle load sensors is discussed. The second part of the paper describes a practical application of these sensors in providing the vehicle overweight bridge protection system at Coalport Bridge. For the covering abstract of the conference see TRIS 394811. (TRRL)

  • Availability:
  • Supplemental Notes:
    • Papers from the International Conference on Road Traffic Data Collection, Institution of Electrical Engineers, London, December 5-7, 1984.
  • Corporate Authors:

    Institution of Electrical Engineers

    Savoy Place
    London WC2R 0BL, NY  England  10016-5997
  • Authors:
    • Moore, R C
    • Bettison, M
    • Davies, P
    • Stevenson, J T
    • FISHER, J
  • Publication Date: 1984

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00394815
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • ISBN: 0 85296304 1
  • Report/Paper Numbers: Monograph
  • Files: ITRD, TRIS
  • Created Date: Aug 31 1985 12:00AM