A PULSE TYPE INDUCTIVE LOOP SENSOR

THE PULSE SENSOR IS USED FOR INDUCTIVE LOOP VEHICLE DETECTION. IT PRODUCES AN OUTPUT PULSE OF CONSTANT LENGTH (50-100 MS) AND IS ACTUATED BY THE RATE OF CHANGE OF THE LOOP INDUCTANCE. THE NEW SENSOR DIFFERS FROM THE CUSTOMARY PRESENCE SENSOR IN THAT IT LOSES FEWER COUNTS DUE TO COINCIDENT ACTUATIONS WHEN USED WITH MULTIPLE LOOPS. THIS PULSE SENSOR EXHIBITS MORE THAN ONE PULSE FOR EXTREMELY SLOW VEHICLES (SPEEDS BELOW 1I MPH IF A 6 X 6 FOOT LOOP IS USED). /BPR/

• Supplemental Notes:
  • Hpr, C-1-9
• Corporate Authors:

  California Division of Highways

  Bridge Department
  Sacramento, CA  United States  05914

  Bureau of Public Roads /US

  400 7th Street, SW
  Washington, DC  United States  20590
• Authors:
  • Barton, J E
  • Stoffers, K
  • Kubel, L G
• Publication Date: 1969-4

Subject/Index Terms

• TRT Terms: Coils (Electromagnetism); Inductance; Sensors; Vehicle detectors
• Subject Areas: Highways; Operations and Traffic Management;

Filing Info

• Accession Number: 00224915
• Record Type: Publication
• Source Agency: Bureau of Public Roads /US
• Files: TRIS
• Created Date: Jul 22 1994 12:00AM