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:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00410683
• Corporate Authors:

  Printerhall Limited

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

Language

• English

Media Info

• Features: Figures; References;
• Pagination: p. 296-297
• Serial:
  • Traffic Engineering & Control
  • Volume: 17
  • Issue Number: 7
  • Publisher: Hemming Group, Limited
  • ISSN: 0041-0683
  • Serial URL: http://www.tecmagazine.com/

Subject/Index Terms

• TRT Terms: Computers; Costs; Data collection; Portable equipment; Recording instruments; Traffic
• Old TRIS Terms: Recorders
• ITRD Terms: 224: Cost; 8623: Data acquisition; 8673: Digital computer; 9060: Portable; 755: Traffic
• Subject Areas: Finance; Highways; Operations and Traffic Management; Planning and Forecasting; I72: Traffic and Transport Planning;

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