ROAD SURFACE CONDITION SENSING ALGORITHM BY USING FUZZY INFERENCE FOR LASER RADAR SYSTEM

A road surface condition sensing system for Advanced Cruise-Assist Highway System (AHS) has been researched since 1996. Although road surface conditions are indicated with qualitative expressions such as dry, wet, snow-covered or frozen, for vehicle control application, it is necessary to provide information by converting to quantitative values such as road surface friction coefficient. Thus, it is necessary to detect or recognize the degree of dryness or wetness of the road surface. Fuzzy inference is an effective method for quantifying the state that is indicated by the degree of the road surface condition. Therefore, a road surface condition sensing system that employs fuzzy inference in the basic algorithm was developed. Laser radar was used as the sensor head that is able to measure the distance from round trip traveling time of pulsed laser beam and the intensity of the reflected light simultaneously. The system and the inference algorithm are outlined. In addition, the effectiveness of this sensing system for collecting road maintenance information was investigated. For the covering abstract see ITRD E114174.

• Corporate Authors:

  ERTICO

  326 Avenue Louis
  Brussels,   Belgium  B-1050

  ITS America

  1100 17th Street, NW, 12th Floor
  Washington, DC  United States  20036

  VERTIS

  TORANOMOM 34 MORI BUILDING 1-25-5
  TORANOMON, MINATOKU, TOKYO 105  Japan 
• Authors:
  • SASADA, Y
  • Takagi, K
• Conference:
  • PROCEEDINGS OF THE 7TH WORLD CONGRESS ON INTELLIGENT SYSTEMS
  • Location: Turin , Italy
  • Date: 2000-11-6 to 2000-11-9
• Publication Date: 2000

Language

• English

Media Info

• Features: References;
• Pagination: 8 p.

Subject/Index Terms

• TRT Terms: Adaptive control; Autonomous intelligent cruise control; Calculation; Conferences; Friction; Highways; Intelligent transportation systems; Lasers; Longitudinal control; Maintenance; Methodology; Radar; Surfaces
• ITRD Terms: 1451: Adaptive cruise control; 6464: Calculation; 8525: Conference; 5452: Friction; 2755: Highway; 8735: Intelligent transport system; 6772: Laser; 3847: Maintenance; 9102: Method; 6738: Radar; 6438: Surface
• Subject Areas: Highways; Maintenance and Preservation; Operations and Traffic Management;

Filing Info

• Accession Number: 00933533
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD
• Created Date: Nov 7 2002 12:00AM