Ampere S.a.s.

Nissan Motor Company Limited

Salim Zair

Guillermo Pita-gil

Bruno Durand

Romain Saussard

A method controls a motor vehicle equipped with autonomous driving structure, sensors, fusion circuitry, and a road navigation assistance device. The method includes: determining a first value when the estimated trajectory of the vehicle intersects or approaches the central line of a traffic lane, determining a second value when the closest target object on the vehicle's driving line is also detected by a telemetry sensor, determining a third value when a collision will occur by comparing the distance between the closest target object and the vehicle to a predetermined threshold, determining a fourth value when the space between the vehicle and the closest target object is empty based on data from the telemetry sensor, and determining a fifth value when there is congestion on the trajectory of the vehicle, and then determining whether the autonomous driving structure can be activated based on only the first to fifth values.

Method for controlling a motor vehicle equipped with autonomous driving means

Method for detecting traffic congestion using a motor vehicle radar system, comprising multi-beam radar sensors (-) in the rear and front corners of the vehicle, the method comprising the steps of: dividing the radar sensors (Df_l, Df_r, Dr_l, Dr_r) into four angular sectors (Zfront, Zrear, Zleft, Zright) extending to the front, to the rear, to the right and to the left of the vehicle respectively, —selecting for each angular sector, from the beams for which no target is detected, the (Dfront, Drear, Dleft, Dright) beam having the shortest reach distance, —detecting the amplitude of reflected beams corresponding respectively to the selected beams, and—analysing the period during which the amplitude of the reflected beams is maintained relative to a predefined time threshold for each angular sector respectively, the method detecting a traffic congestion situation when the analysing step determines simultaneously for the four angular sectors that the period during which the amplitude of the reflected beams is maintained is greater than or equal to the predefined time threshold.

Method for detecting a traffic congestion situation in a motor vehicle

A method for determining a movement vector of a motor vehicle includes: determining, via a radar system of the vehicle, at two successive instants, positions, relative to the vehicle, of elements of an environment of the vehicle that are static relative to the environment, associating the positions determined at these two successive instants with each other in such a way as to form different pairs of positions each grouping together the preceding position and the subsequent position of a given element of the environment, and determining the movement vector of the vehicle by linear regression, based on the pairs of positions thus formed.

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Massy, France

Salim Zair