DE102015215427B4 - Control of a vehicle parking brake - Google Patents

Abstract

An automatic parking brake system for actuating a parking brake (10) of a vehicle (1), comprising:
an analysis unit (20), and
a computing unit (30),
wherein the analysis unit (20) is designed to analyze a current situation in the surroundings of the vehicle (1),
wherein the arithmetic unit (30) is designed to control the parking brake (10) of the vehicle (1) in accordance with the situation analyzed by the analysis unit (20),
wherein the analysis unit (20) is adapted to detect a switching of a traffic signal system (310) from red to green, and
wherein the arithmetic unit (30) is adapted to release the parking brake (10) of the vehicle (1) when the analysis unit (20) detects the switching of the traffic signal system (310) from red to green and a service brake of the vehicle (1) is released ,

Description

The invention relates to an automatic parking brake system for controlling a parking brake of a vehicle, a vehicle having such an automatic parking brake system, a method for automatically actuating a parking brake, a program element and a computer-readable medium.

During a journey with a vehicle, it may be due to traffic to temporary stoppages of the vehicle. Possible reasons for this are red traffic lights or a traffic jam. Especially on hanglagigen roads, it may happen that the driver of the vehicle does not spend sufficient braking force to maintain the stoppage of the vehicle. Or else, the driver can already grind the clutch with a slight slip, although driving on is still impossible or unauthorized. Thus, it may therefore come to an unwanted rolling of the vehicle.

The DE 60 2004 005 053 T2 describes an assistance method and system that enables easier parking of a vehicle without encountering an obstacle. In this case, the vehicle can be stopped automatically, the parking brake automatically triggered without driver intervention and the applied braking force is quickly adapted to a new situation.

The DE 10 2008 006 028 A1 describes the automatic start or shutdown of an internal combustion engine. There is an evaluation of environmental data for identifying a specific traffic situation. A change of an operating state of the internal combustion engine takes place by starting or stopping when the specific traffic situation is identified. It is also described that a traffic light located near the vehicle and its display status can be identified.

The DE 10 2010 021 718 A1 describes a motor vehicle with an automatically operated starting clutch and a detection device, wherein to improve the approach to an obstacle, a control of the starting clutch takes place, which is dependent on the decreasing distance to the obstacle.

The DE 103 47 713 A1 describes a method for controlling a switching element in a motor vehicle transmission. In this case, a function for the state decoupling of a drive train of the motor vehicle and / or a function of a hillholder of the transmission for fixing the drive train is specified. The function for Standabkoppelung of the drive train can be activated at standstill of the vehicle and the vehicle brake.

The DE 103 46 846 A1 describes an improved data processing unit for assistance facilities in motor vehicles and a method for providing current fused situation data to at least one assistance unit in motor vehicles.

It can be regarded as an object of the invention to facilitate the operation of a vehicle.

This object is solved by the subject matter of the independent claims. Further developments of the invention will become apparent from the dependent claims and from the following description.

According to one aspect of the invention, an automatic parking brake system for actuating a parking brake of a vehicle is provided. The automatic parking brake system in this case has an analysis unit and a computing unit, wherein the analysis unit is designed to analyze an instantaneous situation in which the vehicle is located and which is due to the immediate surroundings of the vehicle and its current state. In addition, the arithmetic unit is designed to control the parking brake of the vehicle according to the analyzed by the analysis unit situation.

The vehicle is, for example, a motor vehicle, such as a car, bus or truck, or even a rail vehicle or, for example, a bicycle or motorcycle.

A parking brake of the vehicle is a brake for locking the wheels of the vehicle by friction. Often the parking brake is applied when parking the vehicle to prevent unwanted rolling of the vehicle. The parking brake can be designed as a cable brake with hand or foot lever or as operated by electric actuators brake. Servohydraulic systems can also be used. In contrast, the service brake of the vehicle is a brake used to decelerate the vehicle while driving; This is the foot brake, which is usually supported by a brake booster in their effect. The parking brake is preferably mechanically independent of the service brake.

The arithmetic unit is designed to control the parking brake of the vehicle and thus to actuate via a corresponding actuator. "Acting" means in this context to Example "Activating the parking brake to apply braking force" or "releasing the parking brake".

The automatic parking brake system is capable of operating the parking brake of the vehicle without the intervention of the driver or other occupants of the vehicle. This means that the parking brake is not operated manually, but by electronically controlled actuators. However, it can also be operated manually. It can be provided that a fully automatic operating mode of the automatic parking brake system can be manually activated or deactivated. This parking brake system, in particular the arithmetic unit, temporarily actuates the parking brake during a temporary stop of the vehicle during a journey in order to prevent the vehicle from rolling away. This can be done when the driver operates the foot brake during or until the vehicle stops and the driver does not turn off the engine, e.g. by leaving the ignition key in the ignition lock. If, for example, the driver in a vehicle with manual control actuates the clutch pedal or the accelerator pedal in a vehicle with an automatic transmission, the parking brake can be released again by the computing unit of the vehicle.

It may be an advantageous effect of the invention that unwanted rolling of the vehicle from standstill is prevented, especially if the vehicle is only temporarily brought to a standstill, e.g. at a red traffic light.

According to one embodiment of the invention, the analysis unit is designed to detect the status of a traffic light signal system, a distance to another vehicle, a relative speed to another vehicle, and / or an inclination angle of the ground of the vehicle, and the arithmetic unit is executed, the braking force adjust the parking brake according to this data.

Accordingly, the analysis unit has a sensor arrangement, which is designed, inter alia, to detect the light signals of a traffic light. The sensor arrangement is designed to record information about the traffic light phase of a traffic light. Information about the traffic light phase is initially the traffic light phase itself, i. the lighting condition. The traffic light phase can be, for example, "red", "orange", "green" or "red and orange".

Information about the traffic light phase may also include the time until a change in the traffic light phases will occur. The traffic light may be a road traffic light commonly used in Europe, especially in Germany, i. Traffic light system in the sense of StVO, with the light signals red, orange, green act. The traffic light can also have only a red and an orange light, or a red light alone. If "green" or "orange / green" is mentioned below, then the traffic light system switched off is to be rated as "green" for traffic lights without their own green light. The term "orange / green" used hereinafter refers to the state before which the traffic light was in a red phase. The respective color or color combination of the traffic light, for example red and orange, is also called the traffic light phase.

The analysis unit may be designed to detect additional situation features which relate to the situation in the surroundings of the vehicle, namely a distance to another vehicle and / or a relative speed to another vehicle. In addition, the analysis unit, in particular the sensor arrangement of the analysis unit, can be designed to detect an angle of inclination of the background of the vehicle. In one example, the parking brake is automatically activated only when the vehicle is on a rising or falling road, with the slope of the road in the longitudinal (i.e., possible roll) direction of the vehicle exceeding a certain threshold.

According to the invention, it is a sufficient condition for releasing the parking brake that the sensor arrangement detects the switching of the traffic light from red to green if the driver releases the service brake.

In other words, the analysis unit may be configured to detect the lights of a traffic light, to detect a distance and a relative speed to another vehicle and the slope of the road. Based on this data, the arithmetic unit actuates the parking brake of the vehicle if the environmental parameters analyzed meet certain conditions.

According to a further embodiment of the invention, the arithmetic unit is designed to actuate the parking brake of the vehicle only when a standstill of the vehicle is detected by the analysis unit.

In this case, it is intended to prevent the parking brake from unduly contributing to the deceleration of the vehicle, since such use of the parking brake can significantly shorten its life.

According to a further embodiment of the invention, the arithmetic unit is designed to adjust the braking force of the parking brake so that the vehicle remains at a standstill.

Accordingly, a scheme is implemented which detects slip or imminent slip and induces the desired "slip zero" condition as far as the available braking force and other saturations allow. This can benefit the life of the parking brake by applying a braking force that is only as great as necessary to keep the vehicle at a standstill. Threatening slip can be determined, for example, by means of the strain gauges determined on the brake pads and the applied braking force.

According to a further embodiment of the invention, the analysis unit is designed to detect a red phase of the traffic signal system on which the vehicle is located, and the arithmetic unit is designed to control the parking brake of the vehicle in accordance with the red phase of the traffic signal system detected by the analysis unit and thus to actuate it.

If the sensor arrangement of the analysis unit detects a red phase of the traffic light, then the parking brake can be activated when the vehicle is at a standstill. For this purpose, the traffic light can also be equipped with an infrastructure-to-vehicle communication, via which the traffic light can transmit the information about the traffic light phases to the vehicle. This infrastructure-to-vehicle communication or X2C communication is a term defined by the car-to-car communication consortium (C2C-CC), an association of several car manufacturers. C2C-CC develops an open industry standard for vehicle-to-vehicle communication and for the communication of vehicles with infrastructure facilities (traffic lights, etc.). The X2C communication includes communication between a vehicle and another device that is not a vehicle, such as an infrastructure (traffic light, etc.). The basis for such radio systems can be wireless communication systems in the form of WLANs (Wireless Local Area Networks) according to, for example, the standard defined by the IEEE under the standard designation 802.11. The wireless transmission or the wireless reception of the update data takes place via Bluetooth, WLAN (eg WLAN 802.11a / b / g / n or WLAN 802.11p), ZigBee or WiMax or even cellular radio systems such as GPRS, UMTS or LTE , It is also possible to use other transmission protocols. The mentioned protocols offer the advantage of already existing standardization.

According to a further embodiment of the invention, the analysis unit is designed to detect another vehicle, and the arithmetic unit is designed to control the parking brake of the vehicle according to the other vehicle detected by the analysis unit.

The detection of another vehicle, for example, by a sensor array with infrared, ultrasound, radar and / or Lidarsensoren and / or one or more stereo cameras.

The parking brake activation logic may include different elements. For example, the parking brake may be activated when another vehicle is detected, which falls below a limit with respect to the distance to the own vehicle. Because with close distances between the vehicles, the danger increases that it comes with a unintentional rolling of a vehicle to a slight rear-end collision. It is also conceivable that the sensor arrangement of the analysis unit detects the brake lights of a vehicle ahead and the parking brake activated when the brake lights of the front vehicle - but possibly only on the condition that the own vehicle is also and / or the driver of the own vehicle, the service brake activated.

According to a further embodiment of the invention, the analysis unit is designed to detect an angle of inclination of the ground of the vehicle, and the arithmetic unit is adapted to adjust the parking brake of the vehicle according to the inclination angle of the ground of the vehicle detected by the analysis unit.

The inclination angle of the roadway refers to the gradient in and against the current direction of travel of the vehicle. The direction of travel is approximately determined by the position of the vehicle frame. A lateral inclination of the road is in this context of less interest. However, this inclination angle in the longitudinal direction of the ground has a decisive influence on the curl of the vehicle. Then, when the tangential component of gravity relative to the ground is greater than the static friction of the wheels relative to the vehicle in their bearings, the vehicle rolls. If the slope is almost zero, rolling the vehicle is unlikely. However, if, for example, a slope greater than a predefined limit is detected, the parking brake may be activated. The slope can be determined, for example, via an angle measurement of the gravity vector relative to the vehicle frame. This measurement can also be supported by gyro sensors. In addition, it is possible for the inclination angle to be closed by means of a translational acceleration sensor, aligned in the longitudinal direction of the vehicle, with the clutch open and brakes released, when the vehicle is rolling starts. This can also be used in connection with the above-mentioned regulation of the braking force required for stopping the vehicle.

According to a further embodiment of the invention, the analysis unit is designed to detect the driving behavior of the vehicle driver, and the arithmetic unit is designed to adapt the parking brake of the vehicle according to the driving behavior of the vehicle driver detected by the analysis unit.

The driving behavior of the driver relates in particular to the distance that the driver usually chooses between his vehicle and a vehicle in front.
According to a further embodiment of the invention, the analysis unit is designed to detect topology data stored in a digital map, and the computing unit is designed to adapt the parking brake of the vehicle according to the topology data stored in a digital map.

The term "digital maps" or "digital map data" is also understood to mean maps for advanced driver assistance systems (ADAS) without navigation.
The position determination of the vehicle can be carried out via a cell positioning. This is particularly useful when using GSM or UMTS networks.
Also, the position can be determined via GPS. It should be noted that in the context of the present invention, GPS is representative of all global navigation satellite systems, such as NAVSTAR, Galileo, GLONASS (Russia), Compass (China), IRNSS (India), etc. The digital map data may include the each inclination angle of the roadway included. This map data may also contain other environmental information.

According to a further embodiment of the invention, the arithmetic unit is designed to fuse several data of the situation analyzed by the analysis unit by means of sensor data fusion.

Sensor data fusion describes how to connect and merge data from various information sources, such as sensors, sensor arrays, data memories, or radio transmissions. The arithmetic unit can accordingly use different sources of information to acquire data. For example, these data may be complementary, i.e. complementary, or they may be redundant. In the latter case, the data is examined with a plausibility analysis in order to increase the quality of the information. It may also be provided a complementary filtering to connect depending on the data frequencies short-term, but possibly more accurate information with longer-term, but possibly less accurate information. State estimates can also support data fusion.

In accordance with a further embodiment of the invention, the arithmetic unit is designed to fuse the situation detected by the analysis unit with topology data stored in a digital map, and the arithmetic unit is designed to adapt the parking brake of the vehicle in accordance with this data.

Here, the environment currently detected situations are merged with the information from a digital map. Based on these data, the parking brake is then automatically adjusted to prevent the vehicle from rolling away.

According to another aspect of the invention, a vehicle is provided with an automatic parking brake system as described above and below.

According to another aspect of the invention, a method for automatically actuating a parking brake of a vehicle is provided. In a first step, an analyzing unit analyzes an instantaneous situation in which the vehicle is located. In a second step, the parking brake (more precisely, an actuator of the parking brake) of the vehicle is controlled by a computing unit in accordance with the situation analyzed by the analysis unit.

In accordance with another aspect of the invention, there is provided a program element that, when executed on a processor of a vehicle, directs the processor to perform the steps as described above.

In accordance with another aspect of the invention, there is provided a computer-readable medium having stored thereon a program element that, when executed on a processor of a vehicle, instructs the processor to perform the steps as described above.

• 1 zeigt ein Fahrzeug an einem Hang gemäß einem Ausführungsbeispiel der Erfindung.
• 2 zeigt eine Kreuzung mit zwei Fahrzeugen gemäß einem weiteren Ausführungsbeispiel der Erfindung.
• 3 zeigt ein Verfahren gemäß einem weiteren Ausführungsbeispiel der Erfindung.
• 4 zeigt ein Fahrzeug mit einem Feststellbremsensystem gemäß einem weiteren Ausführungsbeispiel der Erfindung.

In the following, embodiments of the invention will be described with reference to the figures.

• 1 shows a vehicle on a slope according to an embodiment of the invention.
• 2 shows a junction with two vehicles according to another embodiment of the invention.
• 3 shows a method according to another embodiment of the invention.
• 4 shows a vehicle with a parking brake system according to another embodiment of the invention.

The representation in the figures is schematic and not to scale. If the same reference numerals are used in the various figures, these designate the same or similar elements.

1 shows a vehicle 1 on a slope with a tilt angle 330 , A driver assistance system of the vehicle 1 has a position determination unit and a digital map. The digital map is connected via a transmitter module to a server on topology data 350 are stored. These are stored in the cache of the vehicle 1 transmitted, so that within a radius of a few kilometers to the current position of the vehicle 1 the vehicle 1 the respective topology data 350 be available. By determining the current position of the vehicle 1 For example, a coordinate set of geodetic coordinates can be assigned to a location of the digital map. The vehicle 1 stands at a crossroads with stop sign, the road is downhill in front of the stop sign with an angle of 10 ° down. This is for the arithmetic unit 30 the first necessary condition "slope greater than 7 °" and the second condition "driver actuates the service brake" is met. Thus, the parking brake system activates the parking brake 10 , Upon release of the service brake of the driver eliminates a necessary condition of this link after a logical "AND", whereby the parking brake system, the parking brake 10 solves. The driver was by an optical signal on the activation of the parking brake 10 Although pointed out, but has noticed by the action of the parking brake system no difference to the vehicle. The driver was merely in preventing rolling back by the parking brake 10 automatically supported.

2 shows an intersection with a traffic signal system 310 and a second other vehicle 320 that the vehicle 1 drives ahead. The traffic signal system 310 shows red light. Both vehicles 1 and 320 stand in line in front of the red traffic light signal system 310 , The sensor arrangement of the analysis unit 20 recognizes the vehicle in front 320 and also knows the driving behavior 340 the driver. Furthermore, the analysis unit of the vehicle recognizes 1 the red traffic light phase of the traffic light signal system 310 , Since the conditions "red light", AND "vehicle ahead at less than 3m", AND "vehicle ahead has stop lights on", AND "inattentive driver's driving" are met, the arithmetic unit activates 30 the parking brake 10 until at least one of the conditions is no longer fulfilled. In this case, this is the brake light of the vehicle ahead 320 , As the driver of the other vehicle ahead 320 shortly before switching the traffic light system releases the service brake, its brake lights go out. This is done by the analysis unit 20 of the vehicle 1 detected, causing the arithmetic unit 30 of the vehicle 1 a corresponding signal to release the parking brake 10 gives.

3 shows a method for automatically actuating a parking brake 10 of a vehicle 1 , In a first step, an analysis takes place S1 a momentary situation in which the vehicle is 1 located. This step may be the analysis unit 20 To run. In the next step, a match S2 the requirements for activating the parking brake 10 respectively. If all conditions are fulfilled, the operation is carried out S3 the parking brake 10 of the vehicle 1 through the arithmetic unit 30 according to the analysis unit 20 analyzed situation. In a further step, the release takes place S4 the parking brake 10 if one of the necessary conditions disappears.

4 shows a vehicle 1 with an analysis unit 20 , a computing unit 30 , a driver 200 and a parking brake 10 ,

In other words, an automated parking brake 10 described, or a determination of a brake in the vehicle 1 which is activated or deactivated due to various environmental signals, so that the vehicle 1 does not unintentionally roll away at a temporary stop. Thus, respectively used environmental signals from other vehicles 320 , Infrastructures or in the vehicle 1 located sensors are available to operate this function. Respective signal sources are then fused together so that the most accurate possible image of the environment can be created, which contains the most important information for this function.

Basically, the vFahrzeug 1 or the rolling away during a temporary stop phase (for example, at a traffic light, intersection, in traffic) to be protected until the driver wants to get a further propulsion. This feature is meant to be the vehicle 1 at a certain stop, even if the driver is not actively applying the brake to prevent a dangerous traffic situation. This may include: Inadvertently rolling into an intersection (vehicle rolls forward), or: Unintentional rolling until it collides with another road user (Vehicle 1 rolls forwards or backwards).

• - Erfassung der Signale einer Ampelsignalanlage 310, Dabei wird gemäß der Erfindung die Umschaltung von Rot auf Gelb bzw. Grün beurteilt und ausgewertet. Diese Erfassung kann über ein Kamerasystem im Fahrzeug geschehen - oder auch aktiv von der Ampelsignalanlage 310 an das Fahrzeug 1 über eine Car2Infrastructure Anbindung übertragen werden. Grundsätzlich ist die zeitnahe, man spricht von echtzeitfähiger, Informationsübertragung nötig.
• - Topologiedaten 350, welche beispielsweise über eine Navigationseinheit oder Sensoreinheit übermittelt und zur Verfügung gestellt werden. Hierfür kann das Continental Produkt „eHorizon“ als Basis dienen.
• - Radarsystem/Kamerasystem, welches erkennt, welchen Abstand das Fahrzeug 1 vom vorderen Fahrzeug aktuell hat. Diese Dateninformation kann auch den jeweiligen Steigungsgrad/Gefällegrad der aktuellen Standposition einordnen bzw. beurteilen.
• - Radarsensoren, welche den umliegenden Verkehr analysieren
• - Abstand und Abstandsänderung kann dargestellt werden.
• - Neigungssensor im Fahrzeug 1 - kann den aktuellen Neigungsgrad darstellen.
• - Verhaltensauffassung des Systems - wie weit steht der Fahrer üblicherweise vom Vorderfahrzeug entfernt weg.

The following input signals can be used:

• - Acquisition of the signals of a traffic light signal system 310 In this case, the switch from red to yellow or green is evaluated and evaluated according to the invention. This detection can be done via a camera system in the vehicle - or actively from the traffic signal system 310 to the vehicle 1 via a Car2Infrastructure connection. Basically, the timely, one speaks of real-time capable, information transfer necessary.
• - topology data 350 which are transmitted and made available, for example, via a navigation unit or sensor unit. The Continental product "eHorizon" can serve as the basis for this.
• - Radar system / camera system, which detects which distance the vehicle 1 from the front vehicle currently has. This data information can also classify and / or judge the respective grade of inclination / gradient of the current standing position.
• - Radar sensors that analyze the surrounding traffic
• - Distance and distance change can be displayed.
• - Inclination sensor in the vehicle 1 - can represent the current grade.
• - Behavior of the system - how far is the driver usually away from the vehicle in front.

• - Maß und Abstand bis zur Kreuzung/Ampelsignalanlage 310.
• - Aufnahme der aktuellen Fahrbahnspur, um damit die entsprechende Ampelsignalanlage 310 zu detektieren.
• - Maß, Abstand und relative Geschwindigkeit zu Vorder- / Hinterfahrzeug.
• - Bedeutung der jeweiligen Straßenbeschilderung (wie z.B. Stoppschilder) .
• - Signal der Ampelsignalanlage 310.
• - Abschüssigkeit der Straße (durch interne Sensoren oder Topologiedaten 350 aus Navigation oder Cloud).

All of this information is fused prior to actual processing so that a picture of the environment can be provided with all the relevant information of the function. These can be:

• - Measure and distance to the intersection / traffic signal system 310 ,
• - Recording of the current lane track, so that the corresponding traffic signal system 310 to detect.
• - Measure, distance and relative speed to front / rear vehicle.
• - Meaning of the respective road signage (like stop signs).
• - Signal of the traffic signal system 310 ,
• - Decay of the road (through internal sensors or topology data 350 from navigation or cloud).

With all this information is detected when the vehicle 1 at a point in traffic, where it should not move unauthorized after standstill. The speed v = 0 should be kept. All information is an input to prevent it from rolling away at any given time. This means that the respective information affects the braking system and in due course triggering it so that the vehicle 1 is prevented from rolling away. Thus, the function activates an actuator, which brings the brake to close, and then the actuator again controls so that the brake opens when the driver expresses the desire to continue to drive. This function can be controlled independently of the position of the clutch pedal. If the function is activated, the functionality is validated via the wheel speed sensors (eg via ABS system). If a speed greater than zero is detected, the brake pressure must be readjusted.

Optionally, the function analyzes which force needs to be applied for each stop due to its inclination. This can be passed on to a storage system (backend or cloud system). The storage of the data can be done in an exact location.

A "human-machine-interface" can inform the driver about the activation of the brake due to the environmental conditions presented. Thus, a transparent feedback for the driver can be displayed.

• - Safety: Es wird verhindert, dass das Fahrzeug 1 ungewollt wegrollt, ohne dass eine Handbremse oder eine Fußbremse verwendet werden muss.
• - Die Aktivierung geschieht „Just in Time“, sodass der Fahrer den höchsten Komfort spüren kann.
• - Das Wegrollen wird verhindert, ohne dass der Fahrer das Bremspedal betätigen muss, was einen Mehrwert für den Kunden darstellt.
• - Die Funktion kann über das „Human-Machine-Interface“ dargestellt werden. Dies stellt für den Fahrer eine sichtbare Funktionalität dar, die er nachvollziehen kann.
• - Die Erfindung kann im Zusammenhang im Automated Driving (Pilotiertes Fahren) verwendet werden.

Advantages of the invention may be:

• - Safety: It prevents the vehicle 1 unintentionally rolling away without the need for a handbrake or footbrake.
• - The activation happens "Just in time", so that the driver can feel the highest comfort.
• - Rolling is prevented without the driver having to press the brake pedal, which adds value to the customer.
• - The function can be displayed via the "Human-Machine-Interface". This represents a visible functionality for the driver, which he can understand.
• The invention can be used in the context of Automated Driving.

In one embodiment, the vehicle remains 1 at a traffic light signal system 310 at any point (behind a vehicle or directly in front of the traffic signal system 310 ), because the traffic signal system 310 red shows. The vehicle sensor system recognizes this situation (distance to the vehicle in front, red phase of the traffic light signal system 310 , Decay of the road). The vehicle 1 remains at the normal distance behind the front vehicle and the parking brake 10 is automatically activated as the vehicle 1 stands, the traffic signal system 310 indicates red and the road is sloping, so that the vehicle stops safely.

The driver does not have to intervene or the vehicle 1 by holding a brake pressure by the brake pedal in the state. Turns off the traffic light signal system 310 um and accelerates the front vehicle and / or the driver wants to start, so opens the parking brake 10 so that the braking effect ends. Thus, an automated holding of the vehicle takes place 1 in the state due to an analysis of the situation in which the vehicle 1 located, and in particular environment data of the vehicle 1

LIST OF REFERENCE NUMBERS

1

vehicle

10

Parking brake

20

analysis unit

30

computer unit

200

driver

310

Traffic signal system

320

Other vehicle

330

tilt angle

340

Driving behavior of the driver

350

topology data

S1

Analyze

S2

Syndicate

S3

Actuate

S4

To solve

Claims (15)

An automatic parking brake system for actuating a parking brake (10) of a vehicle (1), comprising: an analysis unit (20), and a computing unit (30), wherein the analysis unit (20) is designed to analyze a current situation in the surroundings of the vehicle (1), wherein the arithmetic unit (30) is designed to control the parking brake (10) of the vehicle (1) in accordance with the situation analyzed by the analysis unit (20), wherein the analysis unit (20) is adapted to detect a switching of a traffic signal system (310) from red to green, and wherein the arithmetic unit (30) is adapted to release the parking brake (10) of the vehicle (1) when the analysis unit (20) detects the switching of the traffic signal system (310) from red to green and a service brake of the vehicle (1) is released , Automatic parking brake system after Claim 1 wherein the analysis unit (20) is executed, the state of a traffic light signal system (310), a distance to another vehicle (320), a relative speed to another vehicle (320), and an inclination angle (330) of the background of the vehicle ( 1), and wherein the arithmetic unit (30) is adapted to adjust the braking force of the parking brake (10) of the vehicle (1) in accordance with this data. Automatic parking brake system according to one of the preceding claims, wherein the arithmetic unit (30) is designed to control the parking brake (10) of the vehicle (1) only when a standstill of the vehicle (1) is detected by the analysis unit (20). Automatic parking brake system after Claim 3 wherein the arithmetic unit (30) is adapted to adjust the braking force of the parking brake (10) so that the vehicle (1) remains at a standstill. An automatic parking brake system according to any one of the preceding claims, wherein the analysis unit (20) is adapted to detect a red phase of a traffic signal installation (310) where the vehicle (1) is located, and wherein the arithmetic unit (30) is the parking brake (10) of the vehicle (1) in accordance with the detected by the analysis unit (20) red phase of the traffic signal system (310) to control. An automatic parking brake system according to any one of the preceding claims, wherein the analysis unit (20) is adapted to detect another vehicle (320), and wherein the arithmetic unit (30) is arranged to apply the parking brake (10) of the vehicle (1) in accordance with that of Analysis unit (20) detected distance to the other vehicle (320) and / or the relative speed of the other vehicle (320) to control. An automatic parking brake system according to any one of the preceding claims, wherein the analysis unit (20) is adapted to detect an inclination angle (330) of the ground of the vehicle (1), and wherein the arithmetic unit (30) is adapted to adjust the braking force of the parking brake (10) of the vehicle (1) in accordance with the inclination angle (330) of the ground of the vehicle (1) detected by the analysis unit (20). An automatic parking brake system according to any one of the preceding claims, wherein the analysis unit (20) is adapted to detect the driving behavior (340) of the vehicle driver (200), and wherein the computing unit (30) is adapted to apply the braking force of the parking brake (10) of the vehicle (10). 1) according to a detected by the analysis unit (20) driving behavior (340) of the driver (200). An automatic parking brake system according to any one of the preceding claims, wherein the analysis unit (20) is adapted to detect topology data (350) stored in a digital map, and wherein the computing unit (30) is adapted to apply the braking force of the parking brake (10) of the vehicle (1 ) according to the topology data (350) stored in a digital map. Automatic parking brake system according to one of the preceding claims, wherein the arithmetic unit (30) is designed to fuse a plurality of data of the analyzed by the analysis unit (20) situation by sensor data fusion. Automatic parking brake system after Claim 10 in that the arithmetic unit (30) is designed to fuse the situation detected by the analysis unit (20) with topology data (350) stored in a digital map, and wherein the arithmetic unit (30) is designed to lock the parking brake (10) of the vehicle ( 1) to adapt according to this data. Vehicle (1) with an automatic parking brake system according to one of the preceding claims. Method for automatically actuating a parking brake (10) of a vehicle (1), comprising the steps: Analyzing (S1) an instantaneous situation in the environment of the vehicle (1) by an analysis unit (20), and Actuating (S3) the parking brake (10) of the vehicle (1) by a computing unit (30) in accordance with the situation analyzed by the analysis unit (20), Detecting a switching of a traffic light signal system (310) from red to green by the analysis unit (20), and Release of the parking brake (10) of the vehicle (1) by the computing unit (30) when the analysis unit (20) detecting the switching of the traffic signal system (310) from red to green and a service brake of the vehicle (1) is released. Program element that, when executed on a processor of a vehicle (1), instructs the processor, the method according to Claim 13 perform. A computer-readable medium having stored thereon a program element that, when executed on a processor of a vehicle (1), directs the processor according to the method Claim 13 perform.

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