Method and device for driver information when an active distance and / or speed control system

Description

State of the art

[0001] DE 10 2017 211 886 A1 discloses a method for influencing a speed control system of a single-track motor vehicle, in which after the driver has activated the method, the speed of a second motor vehicle driving directly ahead is determined, the motor vehicle adopts the speed of the motor vehicle driving ahead and, if a predetermined minimum speed is undercut, a haptic signal warns the driver that the cruise control system has been or is about to be deactivated and the cruise control system is deactivated.

[0002] From DE 10 2010 027768 A1 a method for displaying a curve on a display device of a driver information system is known. Disclosure of the invention

[0003] The invention relates to a method for driver information in an activated distance and / or speed control system of a single-track motor vehicle, in which the temporal course of the yaw rate is determined, based on the temporal course of the yaw rate it is determined whether a road section with a plurality of tight bends is present and if a road section with a predetermined plurality of tight bends is present a driver warning is issued.

[0004] An advantageous embodiment of the invention is characterized in that the driver warning is issued when a road section having a plurality of tight curves is present within a time interval of a predetermined length or within a road section of a predetermined length.

[0005] An advantageous embodiment of the invention is characterized in that a passage or section of the road section traveled through is recognized as a tight curve if the value of the yaw rate integrated over time while driving through the passage lies within a predetermined value range.

[0006] An advantageous embodiment of the invention is characterized in that the predetermined value range comprises the values between 150 degrees and 210 degrees.

[0007] An advantageous embodiment of the invention is characterized in that the roll angle of the single-track motor vehicle is determined and that the passage through the road section is only recognized as a tight curve if, in addition, the roll angle reaches or exceeds a predetermined value while driving through the passage.

[0008] An advantageous embodiment of the invention is characterized in that the driver warning is a visual and / or acoustic request to deactivate the distance and / or speed control system.

[0009] An advantageous embodiment of the invention is characterized in that when the road section having a predetermined number of tight curves is present, the distance and / or speed control system is deactivated independently of the driver.

[0010] An advantageous embodiment of the invention is characterized in that the number two or the number three is selected as the predetermined plurality of narrow curves.

[0011] An advantageous embodiment of the invention is characterized in that the single-track motor vehicle is a motorcycle.

[0012] An advantageous embodiment of the invention is characterized in that the driver warning is provided at least by means of an optical display.

[0013] The invention further encompasses a device containing means designed to carry out the methods according to the invention. This is, in particular, a control unit in which the program code for carrying out the methods according to the invention is stored.

[0014] The drawing includes the Figures 1 to 3 .

[0015] In Fig. 1 A top view of the following movement of a motorcycle equipped with a distance and / or speed control system and a car in front as a target object while driving on a straight road is shown.

[0016] In Fig. 2A top view of a motorcycle equipped with a distance and / or speed control system and a car driving ahead are shown negotiating a tight curve.

[0017] In Fig. 3 A top view of several motorcycles following one another on a mountain pass road with several hairpin bends or tight curves is shown.

[0018] When motorcycles follow other road users on winding road sections, such as mountain passes, the radar system may lose track of the target object, making distance and / or speed control impossible. The target object may suddenly disappear from the detection range of the surrounding sensors of the distance and / or speed control function. This could be caused, for example, by a tight bend or a sharp curvature in the road.

[0019] In such situations, a motorcycle could potentially even accelerate unintentionally due to the distance and / or cruise control functions. To prevent such situations, dynamic cornering, such as that found on a mountain pass, can be detected using data from the inertial sensors and time.

[0020] Based on the number of oscillations or complete bends within a certain time, the probability that further bends will soon be encountered on the route can be calculated. If this probability reaches a predefined threshold, a warning can be issued, e.g., a visual indicator recommending that the driver deactivate the adaptive cruise control and / or cruise control systems and regain full control of the vehicle.

[0021] The quantities used to determine the probability can be, for example, the yaw rate of the motorcycle, the roll rate of the motorcycle, the roll angle of the motorcycle, the time interval between the bends include.

[0022] To determine the turning radius during travel, the yaw rate can be integrated over time. If this integrated value fluctuates around the zero position, it can be assumed that the vehicle is traveling straight ahead. However, if the yaw rate deviates from the zero position in a certain direction for a longer period of time, it can be assumed that the vehicle is traveling in a curve.

[0023] At the moment of deviation, the calculation of the cornering angle begins using the yaw rate. If the corner is negotiated within a certain time and a certain roll angle is simultaneously reached, then it can be assumed that the corner is a tight curve or hairpin bend. If a tight curve is detected again within a short period of time in exactly the opposite direction, then it can be assumed with a high probability that it is a mountain pass. If this probability increases and reaches a certain threshold, the driver is prompted to deactivate the distance and / or cruise control system. The threshold can be parameterized.

[0024] In Fig. 1A top view of a motorcycle 12 equipped with a distance and / or speed control system traveling along a road 11, with a car 13 driving ahead as the target object, is shown. The approximately club-shaped area 14 indicates the detection range of the radar sensors of the distance and / or speed control system with which the motorcycle is equipped and which monitors the area in front of the motorcycle. Because the road 11 is straight, the car 13 is located in the center of the detection range 14 of the radar sensors, thus enabling the safe operation of the motorcycle's distance and / or speed control system.

[0025] In Fig. 2The road 21 has a sharp left curve. The vehicle 23 traveling ahead is therefore no longer within the club-shaped detection zone 24 of the radar sensors of the motorcycle 22. The motorcycle's distance and / or speed control system therefore no longer detects a target object.

[0026] In Fig. 3A top view of several motorcycles 32, 33, 34, 35, 36 and 37 following one another on a mountain pass 31 with several hairpin bends or tight curves is shown. On such a mountain pass or serpentine road, the vehicle in front often disappears from the detection range of the radar sensors of the distance and / or cruise control systems, only to reappear shortly afterwards. It may be safer for the driver to deliberately deactivate the distance and / or cruise control system on such serpentine roads in order to consciously assume full control of their vehicle. A driver warning and a request to switch off the system after the distance and / or cruise control system has detected with a high degree of probability that a serpentine road is present is suitable for this purpose.The driver recognizes when the serpentine road has been completed and can then manually reactivate the distance and / or cruise control system.

Claims

1. Method for informing a driver when a distance and / or speed regulating system of a single-track motor vehicle (12) is active, in which - the time curve of the yaw rate is determined, - the time curve of the yaw rate is used to determine the presence of a road section (31) which has a plurality of tight corners, and - a driver warning is output in the presence of a road section which has a specified plurality of tight corners.

2. Method according to Claim 1, characterized in that the driver warning is output in the presence of a road section which has a specified plurality of tight corners within a time interval of specified length or within a road section of specified length.

3. Method according to Claim 1, characterized in that a passage of the road section that is driven along is identified as a tight corner when the value of the yaw rate integrated with respect to time when the passage is driven through lies within a specified value range.

4. Method according to Claim 3, characterized in that the specified value range includes the values between 150 degrees and 210 degrees.

5. Method according to Claim 3, characterized in that the roll angle of the single-track motor vehicle is determined, and in that the passage of the road section that is driven along is identified as a tight corner only when, in addition, the roll angle reaches or exceeds a specified value when driving along the passage.

6. Method according to Claim 1, characterized in that the driver warning is an optical and / or acoustic request to deactivate the distance and / or speed regulating system.

7. Method according to Claim 1, characterized in that the distance and / or speed regulating system is deactivated independently of the driver in the presence of the road section having a specified plurality of tight corners.

8. Method according to Claim 1, characterized in that the number two or the number three is selected as the specified plurality of tight corners.

9. Method according to Claim 1, characterized in that the single-track motor vehicle is a motorcycle.

10. Method according to Claim 1, characterized in that the driver warning is issued at least by means of an optical display.

11. Device, containing means that are configured to carry out a method according to any of Claims 1-10.