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Proceedings Paper

Magnetic lateral guidance sensors for automated highways
Author(s): Donald R. Stauffer; Mike Barrett; Nick Demma; Thomas J. Dahlin
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Paper Abstract

Automated highway systems will need sensors both for longitudinal guidance (intelligent speed control) and for lateral guidance relative to the center of the traffic lane. A magnetic sensor combined with a practical magnetic highway marking system provides an all-weather, cost effective lateral guidance technique. A practical system must have robust performance under all weather operation, and be producible at a reasonable cost. Previous schemes have suffered from weather related performance problems, cost of the sensor portion on the vehicle, or the cost of the highway infrastructure. The subject system uses a high sensitivity magneto-resistive sensor and a magnetic marking tape which is a variant of existing traffic marking tapes. In addition to providing lateral position information, the system can encode ancillary data that can be received by the vehicle sensor. An important data item is the road curvature for the next segment of road. If the system operates with closed loop autonomous lateral control, such feedforward data is important for good performance at highway speeds. A preliminary feasibility demonstration illustrated that the system provides a high signal to noise ratio, and good accuracy.

Paper Details

Date Published: 27 December 1995
PDF: 12 pages
Proc. SPIE 2592, Collision Avoidance and Automated Traffic Management Sensors, (27 December 1995); doi: 10.1117/12.228911
Show Author Affiliations
Donald R. Stauffer, Honeywell Technology Ctr. (United States)
Mike Barrett, Honeywell Technology Ctr. (United States)
Nick Demma, Honeywell Technology Ctr. (United States)
Thomas J. Dahlin, 3M Traffic Control Materials (United States)

Published in SPIE Proceedings Vol. 2592:
Collision Avoidance and Automated Traffic Management Sensors
Alan C. Chachich; Marten J. de Vries, Editor(s)

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