Motor vehicle trajectory measurement
First Claim
1. A measurement system for a motor vehicle comprising:
- a sensing system for sensing the positions of roadway edges, a memory that stores road width data relating to different types of road on which a vehicle may travel; and
a data processor means linked to the sensing system and memory, in which the processor means is adapted to compare the sensed positions of roadway edges with the road width data in order to deduce the type of road on which a vehicle may travel.
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Accused Products
Abstract
The present invention relates to measurement of the trajectory of a motor vehicle with respect to a roadway. A trajectory measurement system for a motor vehicle (1), comprises a sensing system (20, 21) for sensing the positions of roadway edges (5), a memory (24) that stores data relating to the width, and optionally lane width, of different types of road (4) on which the vehicle (1) may travel, and a data processor means (2) linked (26, 29) to the sensing system (20, 21) and memory (24). The processor means (2) compares the sensed positions of roadway edges (5) with the road width data in order to deduce the type of road (4) on which the vehicle (1) travels, and optionally also the lane in which the vehicle travels. The system may also include a vehicle speed sensor (13, 15) linked (33, 35) to the data processor means (2). The memory (24) then stores road speed data relating to different type of road (4) on which the vehicle (1) may travel, so that the processor means (2) can compare also the sensed vehicle speed with the road speed data in order to help deduce the type of road (4) on which the vehicle (1) travels.
8 Citations
9 Claims
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1. A measurement system for a motor vehicle comprising:
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a sensing system for sensing the positions of roadway edges, a memory that stores road width data relating to different types of road on which a vehicle may travel; and
a data processor means linked to the sensing system and memory, in which the processor means is adapted to compare the sensed positions of roadway edges with the road width data in order to deduce the type of road on which a vehicle may travel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A measurement method for a motor vehicle, the motor vehicle comprising a sensing system for sensing the positions of roadway edges, a memory that stores road width data relating to different types of road on which a vehicle may travel, and a data processor means linked to the sensing system and memory, in which the method comprises the steps of:
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a) using the sensing system to sense the positions of roadway edges as the vehicle travels on a road;
b) using the processor means to compare the sensed positions of roadway edges with the road width data, and from this to deduce the type of road on which the vehicle is traveling.
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Specification