A LOW-COST, PORTABLE TRAFFIC DATA ACQUISITION FACILITY

The design and operation of a mobile data acquisition system suitable for general use, but with special attachments for traffic data recording, are described. The system is capable of forming a 16-bit word containing 5 bits of information on distance travelled, 6 bits for event recording and 5 unallocated bits, once a second. These words are stored each second in a buffer store which is a 'first-in, first-out' memory. From this memory the information is fed in blocks of 128 x 8-bit bytes to an incremental stereo cassette recorder where it is recorded in serial form using phase shift keying. The information is subsequently transferred from the cassette to a minicomputer for processing.(a) /TRRL/

  • Availability:
  • Corporate Authors:

    Printerhall Limited

    29 Newmart Street
    London W1P 3PE,   England 
  • Authors:
    • Shannon, G F
    • Andrews, C J
  • Publication Date: 1976-7

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00147463
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Report/Paper Numbers: Analytic
  • Files: ITRD, TRIS
  • Created Date: Sep 20 1977 12:00AM