Assisting reverse driving of a combination
AssigneeValeo Schalter und Sensoren GmbH
InventorsMohamed Radwan, Ahmed Elagroudy
Life of this patent
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Abstract
According to a method for assisting reverse driving of a combination (1), an actual value for a hitch angle of the combination (1) is determined by a computing unit (6) depending on sensor data generated by a hitch angle sensor. A hitch length of a trailer (3), given by a distance between a trailer body (11) and a hitch (7) of a vehicle (2), is determined depending on environmental sensor data of the combination (1). A collision value for the hitch angle is determined by the computing unit (6) depending on the hitch length, and the safety measure is triggered by the computing unit (6) depending on the actual value and the collision value for the hitch angle.
Claims14
A method for assisting reverse driving of a combination, the combination comprising a motor vehicle with a hitch and a trailer with a drawbar rotatably attached to the hitch, the method comprising:
- determining an actual value for a hitch angle of the combination by a computing unit of the combination depending on sensor data generated by a hitch angle sensor system of the combination;
- determining a hitch length of the trailer, which is given by a distance between a trailer body of the trailer and the hitch, by the computing unit depending on environmental sensor data generated by an environmental sensor system of the combination;
- determining a collision value for the hitch angle by the computing unit depending on the hitch length and a predefined distance between a collision point of the hitch and a collision point of the motor vehicle;
- determining a jackknife value for the hitch angle by the computing unit;
- and
- determining a first critical value and a second critical value by the computing unit depending on a minimum of the collision value and the jackknife value, wherein an absolute value of the second critical value is greater than an absolute value of the first critical value,
- wherein the collision point of the motor vehicle corresponds to an outermost point on a body of the motor vehicle in a lateral direction of the motor vehicle;
- and
- triggering safety measures by the computing unit depending on the actual value, the collision value and the jackknife value, wherein:
- a first safety measure is triggered depending on a result of a comparison of the actual value to the first critical value by the computing unit;
- and
- a second safety measure is triggered depending on a result of a comparison of the actual value to the second critical value by the computing,
- wherein the safety measures include carrying out an automatic braking maneuver of the motor vehicle.
A driver assistance system for assisting reverse driving of a combination, wherein the combination comprises a motor vehicle with a hitch and a trailer with a drawbar rotatably attached to the hitch, the driver assistance system comprising:
- a hitch angle sensor system, which is configured to generate sensor data;
- a computing unit, which is configured to determine an actual value for a hitch angle of the combination depending on the sensor data;
- and
- an environmental sensor system configured to generate environmental sensor data wherein the computing unit is configured to:
- determine a hitch length of the trailer given by a distance between a trailer body of the trailer and the hitch depending on the environmental sensor data,
- determine a collision value for the hitch angle depending on the hitch length and a predefined distance between a collision point of the hitch and a collision point of the motor vehicle,
- determine a jackknife value for the hitch angle by the computing unit;
- and
- determine a first critical value and a second critical value by the computing unit depending on a minimum of the collision value and the jackknife value,
- wherein an absolute value of the second critical value is greater than an absolute value of the first critical value,
- wherein the collision point of the motor vehicle corresponds to an outermost point on a body of the motor vehicle in a lateral direction of the motor vehicle, and
- trigger safety measures depending on the actual value, the collision value and the jackknife value, wherein:
- a first safety measure is triggered depending on a result of a comparison of the actual value to the first critical value by the computing unit;
- and
- a second safety measure is triggered depending on a result of a comparison of the actual value to the second critical value by the computing unit,
- wherein the safety measures include carrying out an automatic braking maneuver of the motor vehicle.
Dependencies are inferred from the claim text.