Control unit and method for driver assistance

• US 8,798,888 B2
• Filed: 05/09/2007
• Issued: 08/05/2014
• Est. Priority Date: 06/12/2006
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Braegas, Peter
• Primary Examiner(s): Edwards, Jerrah
• Application Number:
  US12/227,460
• Publication Number:
  US 20090312912A1
• Time in Patent Office: 2,645 Days
• Field of Search: 701/42, 701/78, 701/41, 701/70, 701/83, 318/63, 477/903, 477/904, 180/199, 180/201
• US Class Current: 701/78
• CPC Class Codes: B60T 2201/03 Brake assistants
• CPC Class Codes: B60T 2201/10 Automatic or semi-automatic parking aid systems
• CPC Class Codes: B60T 2240/03 Tire sensors
• CPC Class Codes: B60T 2270/89 Criteria for brake release
• CPC Class Codes: B60T 7/22 initiated by contact of vehicle, e.g. bumper, with an external object, e.g. another vehicle , or by means of contactless obstacle detectors mounted on the vehicle
• CPC Class Codes: B60T 8/32 responsive to a speed condition, e.g. acceleration or deceleration using electrical circuitry or regulation means B60T8/17 ; B60T8/28 takes precedence; electric devices on electrically propelled vehicles indicating the wheel slip B60L3/10; measuring linear or angular speed per se G01P3/00
• CPC Class Codes: B60T 8/58 responsive to speed and another condition or to plural speed conditions
• CPC Class Codes: B60T 8/86 wherein the brakes are automatically applied in accordance with a speed condition and having means for overriding the automatic braking device when a skid condition occurs
• CPC Class Codes: B60W 30/06 Automatic manoeuvring for parking
• CPC Class Codes: B60W 30/09 Taking automatic action to avoid collision, e.g. braking and steering
• CPC Class Codes: B60W 50/14 Means for informing the driver, warning the driver or prompting a driver intervention
• CPC Class Codes: B62D 15/027 Parking aids, e.g. instruction means
• CPC Class Codes: B62D 15/028 Guided parking by providing commands to the driver, e.g. acoustically or optically
• CPC Class Codes: B62D 15/029 Steering assistants using warnings or proposing actions to the driver without influencing the steering system

Abstract

A control unit for a driving assistance of a vehicle includes a data interface for querying sensors for detecting surroundings data of the vehicle, a data interface for querying a steering angle of the vehicle, an arithmetic unit for ascertaining driving instructions based on the surroundings data of the vehicle transmitted by the sensors, a data interface for outputting the driving instructions, the driving instructions including at least one instruction to perform a steering of the vehicle at a standstill, and an interface for activating a braking system of the vehicle in such a way that the vehicle is braked during the steering performed at a standstill until a predefined steering angle is reached.

Claims

1. A control unit configured to provide automated driving assistance for a vehicle, comprising:

a first data interface configured to query sensors for detecting surroundings data of the vehicle;

a second data interface configured to query a steering angle of the vehicle;

an arithmetic unit configured to ascertain driving instructions from the surroundings data of the vehicle transmitted by the sensors;

a third data interface configured to output the driving instructions, the driving instructions including at least one instruction to perform a steering of the vehicle at a standstill;

a fourth data interface configured to selectively activate a braking system of the vehicle such that the vehicle remains braked during the steering performed at a standstill until a predefined steering angle determined by the control unit is reached; and

a fifth interface configured to query motion sensors of the vehicle, wherein the braking system is not activated during the steering performed at a standstill until the query of the motion sensors ascertains a standstill of the wheels of the vehicle.

2. The control unit as recited in claim 1, further comprising:

a sixth data interface configured to query an input device for releasing the braking system braked during the steering performed at a standstill.

3. The control unit as recited in claim 2, wherein the third data interface is configured to output a warning when the braking system is released.

4. A parking-assist device for a vehicle, comprising:

surroundings sensors for detecting surroundings data of the vehicle;

an output unit for conveying information to a driver of the vehicle;

a steering angle sensor;

a triggering unit configured to electronically activate a braking system of the vehicle; and

a control unit including;

a first data interface configured to query the surroundings sensors for detecting surroundings data of the vehicle;

a second data interface configured to query the steering angle sensor for a steering angle of the vehicle;

an arithmetic unit configured to ascertain driving instructions from the surroundings data of the vehicle transmitted by the sensors;

a third data interface configured to output the driving instructions, the driving instructions including at least one instruction to perform a steering of the vehicle at a standstill;

a fourth data interface configured to selectively activate the braking system of the vehicle such that the vehicle remains braked during the steering performed at a standstill until a predefined steering angle determined by the control unit is reached; and

a fifth interface configured to query motion sensors of the vehicle, wherein the braking system is not activated during the steering performed at a standstill until the query of the motion sensors ascertains a standstill of the wheels of the vehicle.

5. A method for automated driving assistance for a vehicle, comprising:

detecting a current steering angle;

outputting driving instructions to a driver of the vehicle, the driving instructions including at least one steering instruction for steering at a standstill of the vehicle;

activating a braking system such that the braking system is braked during the steering performed at a standstill; and

not releasing the braking system until a predefined steering angle has been reached during the steering performed at a standstill;

wherein motion sensors of the vehicle are queried prior to activating the braking system during the steering performed at a standstill, and wherein the activating of the braking system takes place only if the vehicle is determined to be at a standstill.

6. The method as recited in claim 5, wherein a parking brake of the vehicle is activated during the steering performed at a standstill.

7. The method as recited in claim 6, wherein a warning is output when the braking system is released.