DRIVER ALARM DEVICE CARRYING ADAPTIVE CRUISE CONTROL SYSTEM FOR VEHICLE

摘要

PROBLEM TO BE SOLVED: To provide a driver alarm system for precisely deciding a timing for requiring alert to a vehicle operator in a vehicle mounting an adaptive cruise control system. SOLUTION: There is provided with a driver alert system (22) for a host vehicle (10) having an adaptive cruise control system (24). The driver alert system determines if the adaptive cruise control system is on or off and adjusts the factors for determining braking capability and delay, when determining driver alert situations. The system and method also evaluate a vehicle situation relative to a phase plane, having axes of relative speed and relative acceleration of the host vehicle relative to a preceding vehicle (14), and compares the vehicle situation to a threshold for a particular region of the phase plane. COPYRIGHT: (C)2004,JPO