Vehicle guidance system and method for controlling an emergency stop assistance function of a motor vehicle
A vehicle guidance system for a motor vehicle is configured to determine a complexity indicator in relation to the complexity of a driving situation of the motor vehicle and to determine one or more trigger conditions as a function of the complexity indicator. The vehicle guidance system is further configured to cause an automated emergency stop of the motor vehicle if one or more trigger conditions occur.
1 . A system for a motor vehicle, the system comprising:
a vehicle guidance system operatively configured to:
ascertain a complexity indicator with respect to a complexity of a driving situation of the motor vehicle for a driver of the motor vehicle based on an item of information with respect to one or more activated driver-assistance functions of the motor vehicle;
determine one or more triggering conditions for an automated emergency stop of the motor vehicle as a function of the complexity indicator, the one or more triggering conditions being based on a physical condition and/or behavior of the driver; and
bring about the automated emergency stop of the motor vehicle when one or more triggering conditions occur.
2 . The system according to claim 1 , wherein
the one or more triggering conditions have at least one triggering period which depends on a maximally permissible period of time for an existence of a particular driver-related behavior and/or condition; and
the vehicle guidance system is further configured to:
adapt the at least one triggering period as a function of the complexity indicator, such that:
(i) the triggering period increases when the complexity of the driving situation indicated by the complexity indicator diminishes; and/or
(ii) the triggering period diminishes when the complexity of the driving situation indicated by the complexity indicator increases.
3 . The system according to claim 2 , wherein the one or more triggering conditions comprise:
a first triggering condition, to the effect that a driver of the vehicle has closed his/her eyes continuously for at least a first triggering period; and/or
a second triggering condition, to the effect that a head of the driver is oriented away from a straight-ahead position for at least a second triggering period.
4 . The system according to claim 1 , wherein
the vehicle guidance system is further configured to:
ascertain the complexity indicator with respect to the complexity of the driving situation based on ambient-field data from one or more ambient-field sensors of the motor vehicle.
5 . The system according to claim 4 , wherein
the vehicle guidance system is further configured to:
ascertain the complexity indicator based on or more of the following items of information:
an item of information with respect to a traffic density of traffic in an ambient field of the vehicle; and/or
an item of information with respect to an existence of a traffic-jam journey of the vehicle.
6 . The system according to claim 1 , wherein
the vehicle guidance system is further configured to:
ascertain the complexity indicator with respect to the complexity of the driving situation based on map data for a digital map with respect to a road network being driven along by the motor vehicle.
7 . The system according to claim 6 , wherein
the vehicle guidance system is further configured to:
ascertain the complexity indicator based on information with respect to a type of a roadway being driven along by the vehicle.
8 . The system according to claim 1 , wherein
the vehicle guidance system is further configured to:
ascertain the complexity indicator with respect to the complexity of the driving situation based on condition data with respect to a condition of the vehicle.
9 . The system according to claim 8 , wherein
the vehicle guidance system is further configured to:
ascertain the complexity indicator based on
an item of information with respect to a driving speed of the vehicle.
10 . The system according to claim 1 , wherein
the vehicle guidance system is further configured to:
ascertain, based on the complexity indicator, whether a driving situation pertaining to a first category or to a second category occurs, driving situations pertaining to the first category and to the second category each exhibiting a differing complexity;
use one or more first triggering conditions for the triggering of an automated emergency stop of the vehicle when a driving situation pertaining to the first category occurs; and
use one or more second triggering conditions for the triggering of an automated emergency stop of the vehicle when a driving situation pertaining to the second category occurs, the one or more second triggering conditions differing from the one or more first triggering conditions.
11 . The system according to claim 1 , wherein
the vehicle guidance system is further configured to:
ascertain driver data with respect to a driver;
determine, based on the driver data, whether or not the one or more triggering conditions for the triggering of an automated emergency stop of the vehicle have been satisfied; and
bring about an automated emergency stop of the vehicle when it has been determined that the one or more triggering conditions have been satisfied.
12 . The system according to claim 11 , wherein the driver data comprises image data of a camera directed toward the driver.
13 . The system according to claim 1 , wherein
the vehicle guidance system is further configured to:
detect one or more indications of activity with respect to an activity of a driver of the vehicle, the one or more indications of activity including an actuation of a control element of the vehicle by the driver; and
adapt the one or more triggering conditions also as a function of the one or more detected indications of activity.
14 . The system according to claim 13 , wherein the control element is a button, a gas pedal and/or a brake pedal.
15 . The system according to claim 1 , wherein
the vehicle guidance system is further configured to ascertain a complexity indicator which indicates:
how complex the driving situation is for a driver; and/or
what degree of attentiveness the driving situation requires from a driver.
16 . The system according to claim 1 , wherein
the vehicle guidance system is further configured to adapt the one or more triggering conditions as a function of the complexity indicator such that:
a probability that an automated emergency stop of the motor vehicle will be brought about diminishes when the complexity of the driving situation indicated by the complexity indicator diminishes; and/or
the probability that an automated emergency stop of the motor vehicle will be brought about increases when the complexity of the driving situation indicated by the complexity indicator increases.
17 . A method for controlling an emergency-stop assistance function of a motor vehicle, which has been configured to bring about an automated emergency stop of the motor vehicle when one or more triggering conditions occur, the method comprising:
ascertaining a complexity indicator with respect to a complexity of a driving situation of the motor vehicle for a driver of the motor vehicle based on an item of information with respect to one or more activated driver-assistance functions of the motor vehicle; and
determining the one or more triggering conditions as a function of the complexity indicator, the one or more triggering conditions being based on a physical condition and/or behavior of the driver.