US 2022/0187449 A1 · VEHICLE RADAR SYSTEM FOR DETECTING PRECEDING OBJECTS

Abstract

A vehicle environment detection system (3) including a control unit arrangement (8) and at least one sensor arrangement (4) that is arranged to be mounted in an ego vehicle (1) and to provide sensor detections (9, 12) for at least two preceding target vehicles (10, 11). The control unit arrangement (8) is arranged to determine a resulting TTC, time to collision, between the ego vehicle (1) and a closest preceding target vehicle (10), based on an ego velocity (v0) and an ego acceleration (a0) for the ego vehicle (1), a first distance (r1) between the ego vehicle (1) and the closest preceding target vehicle (10), and that target velocity (v1, v2) and corresponding target acceleration (a1, a2) for a preceding target vehicle (10, 11) among the target vehicles (10, 11) that provide a lowest TTC value.

Claims15

Dependent claims

A vehicle environment detection system that is arranged to be mounted in an ego vehicle comprising,

a control unit arrangement and at least one sensor arrangement and to provide sensor detections for at least two preceding target vehicles,
the control unit arrangement is arranged to determine a resulting time to collision, between the ego vehicle and a closest preceding target vehicle, based on an ego vehicle velocity and an ego vehicle acceleration for the ego vehicle,
a first distance between the ego vehicle and the closest preceding target vehicle, and
a target velocity and a corresponding target acceleration for a preceding target vehicle among the target vehicles that provide a lowest time to collision value.

1 more element

A method for determining a time to collision, between an ego vehicle and a closest preceding target vehicle, where there are at least two preceding target vehicles, the method comprising the steps of:

determining an ego vehicle velocity and a vehicle ego acceleration for the ego vehicle;
determining a first distance between the ego vehicle and the closest preceding target vehicle;
and
determining for which of the preceding target vehicles a resulting time to collision shall be calculated;
for each one of the preceding target vehicles for which the resulting time to collision shall be calculated, the method further comprises the steps of:
determining target velocity and corresponding target acceleration;
and
using the target velocity and corresponding target acceleration for the preceding target vehicle, among the target vehicles that provide the lowest time to collision value.

5 more elements

Dependencies are inferred from the claim text.

Vehicle radar system for detecting preceding objects

Life of this patent

Vehicle radar system for detecting preceding objects

Life of this patent

Abstract

Claims15