Device and Method for Determining a Tachometer Characteristic Curve of a Vehicle, System for Controlling the Speed of a Vehicle and Vehicle

A device for determining a tachometer characteristic curve of a motor vehicle, comprising:

• a detection apparatus which is configured to detect locomotion of the motor vehicle and convert it into corresponding locomotion signals;
• and
• a determining apparatus which is configured
• to derive speed values from the locomotion signals, which speed values characterize the speed of the vehicle,
• to determine a locomotion signal mean value from the locomotion signals which are obtained in at least one time window in which a fluctuation of the locomotion signals and/or of the speed values lies within a predefined fluctuation range,
• to determine a speed mean value from the speed values which have been derived from the locomotion signals obtained in the at least one time window, and
• to form a tachometer characteristic curve on the basis of one or more mean value pairs, which are formed by means of one locomotion signal mean value and one speed mean value, by means of which tachometer characteristic curve locomotion signals and speed values are converted into one another, and/or to change a tachometer characteristic curve which is already present.