THREE-DIMENSIONAL VEHICLE PROFILE MEASUREMENT WITH A PULSED LASER SCANNING SENSOR

OMRON has developed a pulsed laser scanning sensor as a new sensor for measuring the profile of vehicles. The pulsed laser scanning sensor is installed overhead on each lane. The sensor measures the height of a passing vehicle in units of 10 centimeters from the reflection time of pulsed laser beams emitted from the sensor, and the width of the vehicle with a resolution of several millimeters by scanning the pulsed laser beams in the direction perpendicular to the lanes. By repeating this scanning process for each traveling vehicle, the profile of the vehicle can be measured three-dimensionally. The 3-D vehicle profile measurement enables the improvement of existing vehicle classification units in Japan, which consist of the vehicle number recognition unit, the mechanical type axle counting equipment and the array of photoelectric sensors, as well as detection of motorcycles traveling side by side. The test of the Electronic Toll Collection System (ETCS) has disclosed that the pulsed laser scanning sensors OMRON had proposed are fully capable of measuring the profiles of vehicles as well as precisely detecting vehicles, and recognizing motorcycles running side by side. Moreover, as a result of these field tests, the authors confirmed the pulsed laser scanning sensor is useful for the improvement of the Automatic Vehicle Classification unit (AVC).

• Supplemental Notes:
  • Full conference proceedings available only on CD.
• Corporate Authors:

  ITS America

  1100 17th Street, NW, 12th Floor
  Washington, DC  United States  20036
• Authors:
  • Naito, T
  • Nishida, H
  • Ogata, S
• Conference:
  • Intelligent Transportation: Realizing the Future. Abstracts of the Third World Congress on Intelligent Transport Systems
  • Location: Orlando, Florida
  • Date: 1996-10-14 to 1996-10-18
• Publication Date: 1996

Language

• English

Media Info

• Pagination: n.p.

Subject/Index Terms

• TRT Terms: Laser beams; Mathematical models; Measurement; Motor vehicles; Motorcycles; Pulses; Scanners; Sensors; Vehicle classification
• Uncontrolled Terms: Profiles
• Old TRIS Terms: Scanning
• Subject Areas: Highways; Operations and Traffic Management; Vehicles and Equipment; I73: Traffic Control;

Filing Info

• Accession Number: 00738769
• Record Type: Publication
• Files: TRIS
• Created Date: Jul 28 1997 12:00AM