EP 1952164 A1 20080806 - SPEED SENSOR FOR MEASURING THE SPEED OF A VEHICLE RELATIVE TO THE GROUND
Title (en)
SPEED SENSOR FOR MEASURING THE SPEED OF A VEHICLE RELATIVE TO THE GROUND
Title (de)
GESCHWINDIGKEITSSENSOR ZUR MESSUNG DER GESCHWINDIGKEIT EINES FAHRZEUGS RELATIV ZUM BODEN
Title (fr)
CAPTEUR DE VITESSE AU SOL D'UN VEHICULE
Publication
Application
Priority
- EP 2006067433 W 20061016
- FR 0511255 A 20051104
Abstract (en)
[origin: WO2007051699A1] The invention concerns devices for measuring the speed of a vehicle relative to the ground, particularly the speed of a motor vehicle. A lighting source lights the ground; a matrix electronic image sensor organized in a matrix consisting of multiple lines (Li to LN) and columns (Ci to CM) of pixels, monitors a ground area. The sensor comprises, on the one hand, a matrix of N lines of M pixels oriented perpendicular to the forward direction of the vehicle and, on the other, a reference line of P pixels (P being less than M) parallel to the lines of the matrix; firstly, an instantaneous image projected on the reference line is recorded; afterward, an image projected on the matrix is recorded. The device comprises means for correlating the image projected on the P pixels of the reference line with the images projection on all the possible groups of P pixels in each of the N lines. The position of the groups that gives the best correlation of instantaneous images represents a measure of a longitudinal component and a transversal component of speeds.
IPC 8 full level
G01P 3/80 (2006.01)
CPC (source: EP)
G01P 3/68 (2013.01); G01P 3/806 (2013.01); B60W 40/105 (2013.01)
Citation (search report)
See references of WO 2007051699A1
Designated contracting state (EPC)
DE FR
DOCDB simple family (publication)
WO 2007051699 A1 20070510; EP 1952164 A1 20080806; FR 2893140 A1 20070511; FR 2893140 B1 20071228
DOCDB simple family (application)
EP 2006067433 W 20061016; EP 06807291 A 20061016; FR 0511255 A 20051104