Driver assistance system

• US 9,452,780 B2
• Filed: 07/09/2013
• Issued: 09/27/2016
• Est. Priority Date: 08/24/2012
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Schumacher, Jan, Beruscha, Frank, Kocher, Pascal
• Primary Examiner(s): Sample, Jonathan L
• Application Number:
  US14/420,868
• Publication Number:
  US 20150217807A1
• Time in Patent Office: 1,176 Days
• US Class Current: 1/1
• CPC Class Codes: B60W 10/04 including control of propulsion units
• CPC Class Codes: B60W 10/20 including control of steering systems
• CPC Class Codes: B60W 2050/0072 Controller asks driver to take over
• CPC Class Codes: B60W 2050/0095 Automatic control mode change
• CPC Class Codes: B60W 2520/10 Longitudinal speed
• CPC Class Codes: B60W 2540/10 Accelerator pedal position
• CPC Class Codes: B60W 2540/12 Brake pedal position
• CPC Class Codes: B60W 2540/18 Steering angle
• CPC Class Codes: B60W 30/12 Lane keeping
• CPC Class Codes: B60W 30/14 Adaptive cruise control
• CPC Class Codes: B60W 30/16 Control of distance between vehicles, e.g. keeping a distance to preceding vehicle
• CPC Class Codes: B60W 30/17 with provision for special action when the preceding vehicle comes to a halt, e.g. stop and go
• CPC Class Codes: B60W 50/10 Interpretation of driver requests or demands
• CPC Class Codes: B60W 50/14 Means for informing the driver, warning the driver or prompting a driver intervention
• CPC Class Codes: B60W 60/0055 only part of driving tasks shifted to occupants
• CPC Class Codes: B62D 15/025 Active steering aids, e.g. helping the driver by actively influencing the steering system after environment evaluation B62D1/28 takes precedence
• CPC Class Codes: B62D 15/026 combined with automatic distance control, i.e. electronic tow bar

Abstract

A driver assistance system for a motor vehicle includes: a longitudinal guide controller; a transverse guide controller; at least one operating element via which the transverse guide controller is able to be activated only in common with, or in addition to, the longitudinal guide controller; a steering sensor which detects an operation of the steering wheel by the driver, the transverse guide controller being able to be deactivated by a signal of the steering sensor without the longitudinal guide controller being deactivated; and a brake pedal sensor which detects an operation of the brake pedal of the vehicle, the transverse guide controller and the longitudinal guide controller being able to be deactivated by a signal of the brake pedal sensor.

Claims

1. A driver assistance system for a host motor vehicle, comprising:

a longitudinal guide controller configured to act upon a drive system of the host vehicle;

a sensor device for detecting a travel lane;

a transverse guide controller evaluating signals of the sensor device and outputting steering commands to a steering actuator of the host vehicle;

at least one operating element by which the transverse guide controller and the longitudinal guide controller are selectively activated;

a steering sensor which detects an operation of the steering wheel of the vehicle by the driver, wherein the transverse guide controller is deactivated by a signal of the steering sensor, without the longitudinal guide controller being deactivated; and

a brake pedal sensor which detects an operation of the brake pedal of the vehicle, wherein the transverse guide controller and the longitudinal guide controller are deactivated by a signal of the brake pedal sensor;

wherein there is an activation hierarchy for the longitudinal guide controller and the transverse guide controller, according to which the transverse guide controller is activatable only in common with or in addition to the longitudinal guide controller, and according to which the longitudinal guide controller, when the transverse guide controller is activated, is deactivatable in going along with a deactivation of the transverse guide controller, by an operation of the brake pedal or by a movement of the steering wheel.

2. The driver assistance system as recited in claim 1, further comprising:

an accelerator sensor which detects an operation of the accelerator of the vehicle, wherein the transverse guide controller is deactivated by a signal of the accelerator sensor, without the longitudinal guide controller being deactivated.

3. The driver assistance system as recited in claim 2, further comprising:

a signaling element for outputting a takeover request signal to the driver of the vehicle, wherein, in response to a deactivation by the signal of the accelerator sensor, the transverse guide controller is configured to actuate the signaling element to output a takeover request signal to the driver and temporarily to continue the regulating function of the transverse guide controller for a takeover period, at least to the extent that no signal is generated by a steering wheel sensor within the takeover time, which indicates a guidance of the steering wheel by the driver.

4. The driver assistance system as recited in claim 2, wherein the longitudinal guide controller is configured such that a signal of the accelerator sensor brings about a temporary suspension of the regulating function of the longitudinal guide controller for the duration of the operation of the accelerator.

5. The driver assistance system as recited in claim 2, wherein the steering sensor is configured to detect a steering torque applied by the driver to the steering wheel of the vehicle.

6. The driver assistance system as recited in claim 2, wherein the transverse guide controller is able to be activated by the at least one operating element only when the speed of the vehicle does not exceed a boundary value.

7. The driver assistance system as recited in claim 2, wherein the transverse guide controller is a traffic jam assistant.

8. The driver assistance system as recited in claim 2, further comprising:

a locating system for locating objects ahead of the host vehicle, wherein the longitudinal guide controller is an adaptive cruise controller which is configured to match, based on locating data of the locating system, the speed of the host vehicle to the speed of a preceding, located vehicle and to regulate a distance from the preceding vehicle.

9. The driver assistance system as recited in claim 8, wherein the longitudinal guide controller is a stop-and-go controller which is configured to (i) brake the host vehicle to a standstill when the preceding vehicle stops, and (ii) when travel by the preceding vehicle is resumed, start the host vehicle again automatically.