COMPARATIVE MEASUREMENTS USING THE TRRL HIGH SPEED PROFILOMETER AND THE BRUNSWICK PROFILOGRAPH

VERGLEICHSMESSUNGEN ZWISCHEN DEM TRRL HIGH SPEED PROFILOMETER UND DEM BRAUNSCHWEIGER PROFILOGRAFEN

A study was carried out to evaluate the TRRL high-speed profilometer and to compare its performance with the Braunschweig profilograf of the Institute of Motor Vehicle Engineering. Tests described were carried out on ten sections of highway of different construction, type and condition. Principles of operation of the two systems are described. The TRRL high-speed profilometer (hsp) uses inertia-less laser sensors mounted on a single axle trailer. The sensors measure the distance above the road surface with on-line processing of unevenness data using a digital computer in the towing vehicle. The Braunschweig profilograf (bp) consists of a 5 M rigid straight rail over which an electrically driven test carriage runs. A fixed sensor wheel traces the road surface. Its vertical movement is converted into analogue signals and recorded on magnetic tape as uneven height measurement. Comparison of results between the two systems show good agreement. The hsp is of interest because of its essentially high accuracy, high rate of measurement and simple operation. The paper was originally published in German as Report No. 543 by Technische Universitaet Braunschweig, Institut fuer Fahrzeugtechnik. (TRRL)

• Corporate Authors:

  Transport and Road Research Laboratory (TRRL)

  Wokingham, Berkshire  United Kingdom 
• Authors:
  • Mitschke, M
• Publication Date: 1980-4

Media Info

• Features: Figures; Photos; References; Tables;
• Pagination: 40 p.

Subject/Index Terms

• TRT Terms: Alternatives analysis; Analog computers; Data collection; Digital computers; Errors; Evaluation and assessment; Highways; Lasers; Measurement; Measuring instruments; Pavements; Profilographs; Profilometers; Sensors; Smoothness; Speed; Surface course (Pavements); Texture
• Old TRIS Terms: Analog systems; Laser applications
• ITRD Terms: 6155: Apparatus (measuring); 8623: Data acquisition; 8673: Digital computer; 6440: Error; 9020: Evaluation (assessment); 3071: Evenness; 2755: Highway; 6772: Laser; 6136: Measurement; 6103: Profilometer; 6120: Sensor; 5408: Speed
• Subject Areas: Highways; Pavements; I23: Properties of Road Surfaces;

Filing Info

• Accession Number: 00325668
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Report/Paper Numbers: Translation 2851 Monograph
• Files: ITRD, TRIS
• Created Date: Jun 12 1981 12:00AM