# US 2014/0207352 A1 · Driver Assistance System Having Autonomous Braking to a Standstill

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- Number: US 2014/0207352 A1
- Document ID: US20140207352A1
- Status: Published application
- Kind: A1
- Application number: 14/222,237
- Filed: 2014-03-21
- Published: 2014-07-24
- Earliest claimed: 2011-09-22
- Assignees: KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH
- Applicants: KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH
- Inventors: Mark ROSSI; Thomas HACKL; Jochen BANSPACH; Ulrich GUECKER; Markus KLEIN
- Web page: https://patentgrep.com/patent/US20140207352A1

## CPC

- B60K 31/0008: {including means for detecting potential obstacles in vehicle path}
- 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}
- B60T 2201/024: Collision mitigation systems
- B60W 2420/408: Radar; Laser, e.g. lidar
- B60W 2720/10: Longitudinal speed
- B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60T: VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL (electrodynamic brake systems for vehicle, in general B60L; brakes per se, i.e. devices where braking effect occurs, including ultimate brake actuators, F16D); ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60W: CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT

## Abstract

A driver assistance system for a vehicle is provided. The driver assistance system includes a detecting device, which is designed to detect driving data that characterize the driving state of the vehicle, and a controller, which is designed to process the driving data detected by the detecting device and, if predetermined driving data are present, trigger a braking device to perform autonomous braking of the vehicle. The controller is also designed such that if driving data that indicate an imminent collision with an obstacle are detected, the function of the detecting device is monitored. If the detecting device no longer provides any driving data or plausible driving data to the controller, a continuation of the autonomous braking is triggered, at least until the vehicle has been decelerated to a specified speed.

## Claims

### Claim 1

A driver assistance system for a vehicle, the driver assistance system comprising:
a detection device which detects driving data characterizing a driving state of the vehicle; and
a controller which processes the driving data detected by the detection device and, if predetermined driving data is present, causes a brake device to carry out autonomous braking of the vehicle,
wherein when driving data which indicates a directly imminent collision with an obstacle is detected, the controller monitors a function of the detection device, and if the detection device no longer supplies any driving data or any plausible driving data to the controller, the controller brings about continuation of the autonomous braking at least until the vehicle has been decelerated to a predefined speed.

### Claim 2 (depends on 1)

The driver assistance system as claimed in claim 1, wherein the predefined speed is equal to zero, at which speed the vehicle is in a stationary state.

### Claim 3 (depends on 2)

The driver assistance system as claimed in claim 2, wherein after the autonomous braking of the vehicle to the stationary state, the controller keeps the brake device applied and/or applies a further brake device in order to keep the vehicle in a braked state.

### Claim 4 (depends on 3)

The driver assistance system as claimed in claim 3, wherein the brake device is a service brake device and the further brake device is a parking brake device of the vehicle.

### Claim 5 (depends on 4)

The driver assistance system as claimed in claim 4, wherein the parking brake device is activated electrically.

### Claim 6 (depends on 1)

The driver assistance system as claimed in claim 1, wherein the controller changes the brake device from an applied state to a released state if an activation element has been activated.

### Claim 7 (depends on 1)

The driver assistance system as claimed in claim 1, wherein the detection device detects a distance from another vehicle driving in front of the vehicle.

### Claim 8 (depends on 7)

The driver assistance system as claimed in claim 7, wherein the detection device comprises at least one distance sensor or a deceleration sensor.

### Claim 9 (depends on 1)

The driver assistance system as claimed in claim 1, wherein if the predetermined driving data is present, a drive machine is made to reduce a driving power autonomously, and if the detection device no longer supplies any driving data or any plausible driving data to the controller, the controller brings about a continuation of the autonomous reduction of the driving power of the drive machine, at least until the vehicle has been decelerated to the predefined speed.

### Claim 10

A method for braking a vehicle, the method comprising:
detecting, by a detection device, driving data characterizing a driving state of the vehicle;
processing the detected driving data;
if predetermined driving data is present, carrying out autonomous braking of the vehicle by a brake device;
if driving data which indicates an immediately imminent collision with an obstacle is detected by the detection device, monitoring a function of the detection device; and
if the detection device no longer supplies any driving data or any plausible driving data, continuing the autonomous braking at least until the vehicle has been decelerated to a predefined speed.

### Claim 11 (depends on 10)

The method as claimed in claim 10, wherein a stationary state of the vehicle is used as the predefined speed.

### Claim 12 (depends on 11)

The method as claimed in claim 11, wherein after the autonomous braking of the vehicle to the stationary state, the brake device remains applied and/or a further brake device is applied in order to keep the vehicle in a braked state.

### Claim 13 (depends on 10)

The method as claimed in claim 10, wherein the brake device is changed from an applied state to a released state if an activation element has been activated.

### Claim 14 (depends on 10)

The method as claimed in claim 10, wherein the detection device detects a distance from another vehicle driving in front of the vehicle.

### Claim 15 (depends on 10)

The method as claimed in claim 10, wherein if the predetermined driving data is present, a drive machine is made to reduce the driving power autonomously, and if the detection device no longer supplies any driving data or any plausible driving data, continuation of the autonomous reduction in the driving power of the drive machine is brought about at least until the vehicle has been decelerated to the predefined speed.