System for controlling speed and distance in a motor vehicle changing traffic lanes

• US 6,304,811 B1
• Filed: 08/29/2000
• Issued: 10/16/2001
• Est. Priority Date: 12/20/1997
• Status: Expired due to Term

• Current Assignee: Bayerische Motoren Werke AG
• Original Assignee: Bayerische Motoren Werke AG
• Inventors: Prestl, Willibald
• Primary Examiner(s): Cuchlinkski, Jr., William A.
• Assistant Examiner(s): ARTHUR JEANGLAUDE, GERTRUDE
• Application Number:
  US09/581,945
• Time in Patent Office: 413 Days
• Field of Search: 701/1, 701/93, 701/96, 701/117, 701/119, 701/301, 180/169, 180/167, 180/170, 180/271, 340/435, 340/436, 340/438, 340/901, 340/902, 340/903, 340/904, 340/905, 340/917, 340/933
• US Class Current: 701/96
• CPC Class Codes: B60K 31/0008 including means for detecting potential obstacles in vehicle path
• CPC Class Codes: B60W 2554/00 Input parameters relating to objects
• CPC Class Codes: B60W 2554/802 Longitudinal distance
• CPC Class Codes: B60W 2555/80 Country specific, e.g. driver age limits or right hand drive
• CPC Class Codes: B60W 2556/50 of positioning data, e.g. GPS [Global Positioning System] data
• CPC Class Codes: B60W 30/16 Control of distance between vehicles, e.g. keeping a distance to preceding vehicle
• CPC Class Codes: G08G 1/166 for active traffic, e.g. moving vehicles, pedestrians, bikes

Abstract

A system for distance-dependent control of the driving speed of a motor vehicle including the detection of a traffic lane change or intention to change traffic lane and a signal for estimating the mean speed of vehicles in a target lane. When a turn signal or intention to turn is detected, the control system defines the vehicle speed and/or distance to a vehicle driving ahead in the same lane and sets this defined vehicle speed to be equal to the estimated mean speed of vehicles in an adjacent lane.

Claims

1. A method for distance-dependent driving speed control of an automobile having an electronic control unit, said method comprising the steps of:

detecting at least one signal indicating a traffic lane change or the intention to change the traffic lane from a first lane to a second lane;

generating at least one signal for estimating the mean speed of vehicles in the second traffic lane;

defining the automobile speed and/or distance to a vehicle driving ahead in said first lane, wherein said defined vehicle speed is substantially identical to said mean speed of said vehicles in said second lane.

2. The method according to claim 1, further including the step of determining the direction of said vehicles in said second lane.

3. The method according to claim 1, wherein said at least one signal for recognizing a traffic lane change or the intention to change the traffic lane change is one of a change to a left traffic lane and a change to a right traffic lane.

4. The method according to claim 3, wherein a determination is made between country-related information concerning one of left hand drive and right hand drive countries.

5. A distance-dependent driving speed control system for a motor vehicle having an electronic control unit, comprising:

means for recognizing a traffic lane change or the intention to change the traffic lane from a first traffic lane to a target traffic lane of said motor vehicle;

means for generating a signal to estimate the mean speed of vehicles in said second traffic lane;

means for defining the speed and/or distance from said motor vehicle to a second vehicle driving ahead in said first traffic lane when a traffic lane change or intention to change the traffic lane has been generated wherein said defined speed is substantially equal to said mean speed of vehicles in said second lane.

6. The distance-dependent driving speed control system according to claim 5, further including means for detecting the direction of vehicles in said second traffic lane.

7. The distance-dependent driving speed control system according to claim 5, further including means to differentiate between a change to a left hand traffic lane and a change to a right hand traffic lane.

8. The distance-dependent driving speed control system according to claim 7, further including means for differentiating between country-related variations of left and right hand driving systems.