DE102004003019A1 - Warning and correction of parameters of a road vehicle braking system provides for safe operation - Google Patents
Warning and correction of parameters of a road vehicle braking system provides for safe operation Download PDFInfo
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- DE102004003019A1 DE102004003019A1 DE200410003019 DE102004003019A DE102004003019A1 DE 102004003019 A1 DE102004003019 A1 DE 102004003019A1 DE 200410003019 DE200410003019 DE 200410003019 DE 102004003019 A DE102004003019 A DE 102004003019A DE 102004003019 A1 DE102004003019 A1 DE 102004003019A1
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- 238000000034 method Methods 0.000 claims description 29
- 238000001514 detection method Methods 0.000 claims description 10
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- 238000004590 computer program Methods 0.000 claims description 4
- 230000001953 sensory effect Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 2
- 230000009471 action Effects 0.000 abstract description 3
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 230000006870 function Effects 0.000 description 7
- 230000008859 change Effects 0.000 description 3
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- 230000006399 behavior Effects 0.000 description 2
- 230000036632 reaction speed Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
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- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
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- 231100000566 intoxication Toxicity 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- 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
- B60K28/00—Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions
- B60K28/02—Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions responsive to conditions relating to the driver
- B60K28/06—Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions responsive to conditions relating to the driver responsive to incapacity of driver
- B60K28/066—Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions responsive to conditions relating to the driver responsive to incapacity of driver actuating a signalling device
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T7/00—Brake-action initiating means
- B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
- B60T7/14—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger operated upon collapse of driver
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- 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
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/14—Adaptive cruise control
- B60W30/143—Speed control
- B60W30/146—Speed limiting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T2220/00—Monitoring, detecting driver behaviour; Signalling thereof; Counteracting thereof
- B60T2220/02—Driver type; Driving style; Driver adaptive features
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- 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
- B60W2520/00—Input parameters relating to overall vehicle dynamics
- B60W2520/12—Lateral speed
- B60W2520/125—Lateral acceleration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- 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
- B60W2520/00—Input parameters relating to overall vehicle dynamics
- B60W2520/14—Yaw
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- 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
- B60W2540/00—Input parameters relating to occupants
- B60W2540/043—Identity of occupants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- 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
- B60W2540/00—Input parameters relating to occupants
- B60W2540/18—Steering angle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- 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
- B60W2540/00—Input parameters relating to occupants
- B60W2540/30—Driving style
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- 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
- B60W2720/00—Output or target parameters relating to overall vehicle dynamics
- B60W2720/10—Longitudinal speed
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Automation & Control Theory (AREA)
- Regulating Braking Force (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren gemäß Oberbegriff von Anspruch 1, ein elektronisches Bremsensteuergerät gemäß Anspruch 8 sowie ein Computerprogrammprodukt gemäß Anspruch 9.The invention relates to a method according to the generic term of claim 1, an electronic brake control device according to claim 8 and a computer program product according to claim 9.
Verfahren zur Warnung und Beeinflussung von Kraftfahrzeugführern sind an sich bekannt.Procedures for warning and influencing Motor vehicle drivers are known per se.
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Die Erfindung setzt sich daher zum Ziel, ein Verfahren zur Warnung bzw. Beeinflussung eines Kraftfahrzeugführers und/oder zur Beeinflussung eines Kraftfahrzeugs anzugeben, welches mit geringem Aufwand und somit kostengünstig in ein Kraftfahrzeug mit Fahrdynamiksensoren implementiert werden kann.The invention therefore sets out to Aim, a method for warning or influencing a motor vehicle driver and / or to influence the influence of a motor vehicle that has a low Effort and therefore inexpensive be implemented in a motor vehicle with driving dynamics sensors can.
Diese Aufgabe wird erfindungsgemäß durch das Verfahren gemäß Anspruch 1 gelöst.This object is achieved by the Method according to claim 1 solved.
Die Funktion soll Anzeichen von Fahreruntüchtigkeit erkennen und daraufhin geeignete Maßnahmen treffen. Wenn zum Beispiel der Kraftfahrzeugführer auf Grund von Müdigkeit, Alkoholgenuss, Medikamenteneinfluss oder Krankheit nicht mehr in der Lage ist, das Fahrzeug ausreichend sicher zu beherrschen, werden geeignete Maßnahmen getroffen.The function is said to show signs of inability to drive recognize and then take appropriate measures. If for example the driver due to fatigue, Alcohol consumption, medication influence or illness no longer in the Is able to control the vehicle sufficiently safely appropriate measures met.
Wenn gemäß dem Verfahren nach der Erfindung Bedingungen vorliegen, die Hinweise auf eine Fahruntüchtigkeit ausreichend wahrscheinlich machen, wird der Kraftfahrzeugführer mittels einer Warneinrichtung gewarnt/gemahnt. Diese Warneinrichtung kann vorzugsweise optisch, akustisch oder haptisch dem Fahrer signalisieren, dass Fahreruntüchtigkeit vorliegt. Alternativ kann vorgesehen sein, dass das Kraftfahrzeug zum Zwekke der Sicherheitserhöhung beeinflusst wird.If according to the method according to the invention Conditions exist that indicate signs of inability to drive make the driver sufficiently probable by means of warned / warned by a warning device. This warning device can signal to the driver preferably optically, acoustically or haptically, that inability to drive is present. Alternatively, it can be provided that the motor vehicle for the purpose of increasing security being affected.
Nach der Erfindung wird das Verfahren so gestaltet, dass es in einem herkömmlichen elektronischen Bremsensteuergerät oder in einem anderen Steuergerät, das Zugriff auf die Signale des Bremsensteuergeräts hat, als Programm oder Routine lauffähig ist, wobei das Bremsenssteuergerät insbesondere mit einer Fahrdynamikregelung ausgestattet ist. Entsprechende Bremsensteuergeräte umfassen neben einer ABS-Funktionalität in der Regel auch die Funktion ESP bzw. TCS und haben dadurch Zugriff auf sensorische fahrdynamische Informationen von beispielsweise Gierratensensor, Querbeschleunigungssensor und Lenkwinkelsensor.According to the invention, the method designed to be in a conventional electronic brake control unit or in another control unit, has access to the signals of the brake control unit, is executable as a program or routine, being the brake control unit is particularly equipped with a vehicle dynamics control. Appropriate Brake control equipment In addition to an ABS functionality, they usually also include the function ESP or TCS and therefore have access to sensory driving dynamics Information from, for example, yaw rate sensor, lateral acceleration sensor and steering angle sensor.
Zur Erfassung der Bedingungen, die auf eine Fahruntüchtigkeit schließen lassen, werden vorzugsweise ausschließlich die in dem elektronischen Bremsenssteuergerät über den Fahrzustand und über die Fahreraktivitäten verfügbaren Informationen verwendet, wobei insbesondere die Lenkwinkelinformation als Zentrale Größe ausgewertet wird.To capture the conditions that on an inability to drive conclude are preferably only those in the electronic brake control unit via the Driving condition and over the driver activities available Information used, in particular the steering angle information evaluated as a central variable becomes.
Das Verfahren führt außerdem eine Fahrtüchtigkeitserkennung durch. Zur Fahrtüchtigkeitserkennung wird vorzugsweise eine Wahrscheinlichkeitsbetrachtung durchgeführt. Dabei wird insbesondere eine Warngröße gebildet, welche bei Überschreitung eines bestimmten Warnwerts eine entsprechende Warnaktion auslöst.The method also performs roadworthiness detection by. For driving ability recognition a probability assessment is preferably carried out. there a warning variable is formed in particular, which when exceeded of a certain warning value triggers a corresponding warning action.
Zur Fahrtüchtigkeitserkennung wird bevorzugt eine Unterscheidung zwischen dem Fahrerzustand "Trunkenheit" und "Ermüdung" vorgenommen.Preference is given to the ability to drive a distinction was made between the driver's state of "drunkenness" and "fatigue".
Der Fahrerzustand "Trunkenheit" kann insbesondere dadurch festgestellt werden, in dem überprüft wird, ob Lenkeingriffe im Mittel seltener, jedoch gleichzeitig mit stärkerer Amplitude vorgenommen werden. Hierzu wird nach dem Verfahren der Erfindung vorzugsweise ein Vergleich von Lenkwinkel mit Gierrate durchgeführt. Ist bei festgestellter Geradeausfahrt die Gierratenänderung größer, als ein vorgegebener Schwellenwert, wird auf den Fahrzustand "Trunkenheit" geschlossen. Besonders bevorzugt wird zur Feststellung dieses Fahrzustands ein Vorzeichenwechsel der Gierrate und/oder der Querbeschleunigung überwacht. Dabei wird die Erkenntnis ausgenutzt, dass ein unbeeinträchtigter Fahrer im wesentlichen keine nennenswerten Gierratenänderung erzeugt, jedoch ein betrunkener Fahrer mit abnehmender Reaktionszeit seltenere, jedoch heftigere Lenkeingriffe vornimmt, die dann auch Auswirkungen auf die gemessene Gierrate haben.The driver state "drunkenness" can in particular can be determined by checking whether steering intervention in the Medium rare, but at the same time with a greater amplitude. For this purpose, a comparison is preferably made according to the method of the invention of steering angle performed with yaw rate. Is when determined Straight ahead the yaw rate change bigger than a predefined threshold value, the driving state "intoxication" is concluded. Especially A change of sign is preferred to determine this driving state the yaw rate and / or the lateral acceleration are monitored. Thereby the knowledge is used, that an undisturbed Driver essentially no significant yaw rate change generated, but a drunk driver with decreasing response time rarely, but more violent steering interventions, which then Affect the measured yaw rate.
Der Fahrerzustand "Ermüdung" lässt sich insbesondere dadurch erkennen, dass überprüft wird, ob im Mittel Lenkeingriffe fehlen und/oder schwächer werden, wobei diese mit darauffolgenden plötzlichen, heftigen Ausgleichslenkbewegungen verknüpft sind. Zur Erkennung dieses Fahrzustands wird geprüft, ob die Häufigkeit von Lenkeingriffen unterhalb eines vorgegebenen Schwellenwertes absinkt. Dabei wird insbesondere zusätzlich geprüft, ob nach längeren Lenkpausen Lenkeingriffe mit hoher Amplitude zum schreckhaften Ausgleich der versäumten Lenkeingriffe durchgeführt werden. Ganz besonders bevorzugt wird dabei geprüft, ob im Anschluss an die voranstehend beschriebenen Ereignisse eine gewisse Zeit des Normalfahrens stattfindet.The driver's "fatigue" state can be recognized in particular by checking whether steering interventions are missing and / or weakening on average, these being linked to subsequent sudden, violent compensatory steering movements. To detect this driving condition, it is checked whether the frequency of steering interventions falls below a predetermined threshold. In particular, an additional check is carried out to determine whether steering interventions with a high amplitude are carried out after a long pause in steering in order to compensate the missed steering interventions in a terrible manner. All It is particularly preferably checked whether a certain time of normal driving takes place following the events described above.
Gemäß einem bevorzugten Verfahren der Erfindung wird eine Wiederholrate der richtungsstabilisierenden Lenkeingriffe gebildet. Insbesondere wird dabei die Amplitude der Lenkeingriffe (Amplitude der Schlangenlinien) berücksichtigt, welche von einem Lenkwinkelsensor erfasst werden. Als Vergleichsgrößen werden bevorzugt die entsprechenden Kenngrößen verwendet, wie sie nach dem Losfahren gemessen werden. Zusatzlich können vorab fest definierte Grenzwerte herangezogen werden. Dabei wird angenommen, dass der Fahrer nach dem Losfahren konzentriert ist und das Fahrzeug beherrscht.According to a preferred method The invention uses a repetition rate of directional stabilizing Steering interventions formed. In particular, the amplitude of the Steering interventions (amplitude of the serpentine lines) are taken into account, which are detected by a steering angle sensor. As a benchmark prefers to use the corresponding parameters as they are after be measured when driving off. In addition, previously defined limit values can be defined be used. It is assumed that the driver is after is focused on driving and controls the vehicle.
Zur Fahrtüchtigkeitserkennung wird also beispielsweise aus den Sensordaten das Fahren von Schlangenlinien betrachtet. Dabei kann u.a. die Reaktionsgeschwindigkeit, das Lenkverhalten und die Gleichmäßigkeit der Fahrgeschwindigkeit betrachtet werden. Dabei ist klar, dass im allgemeinen die Gleichmäßigkeit der Fahrgeschwindigkeit allein nicht zur Erkennung der oben definierten Fahrerzustände ausreicht, jedoch ist es insbesondere vorgesehen, dass die Gleichmäßigkeit der Fahrgeschwindigkeit zur Plausibilisierung mit herangezogen wird. Zur Plausibilisierung können ganz besonders bevorzugt zusätzlich oder alternativ auch weitere Kenngrößen, wie über den Bremsdruck oder das Bremsverhalten herangezogen werden.So the ability to drive is used for example driving serpentine lines from the sensor data considered. Among other things, the reaction speed, the steering behavior and the uniformity the driving speed. It is clear that generally uniformity the driving speed alone not for the recognition of those defined above Driver states is sufficient however, it is particularly envisaged that the uniformity the driving speed is used for the plausibility check. To check the plausibility very particularly preferably in addition or alternatively also other parameters, such as the brake pressure or the Braking behavior can be used.
Die Erkennungseinrichtung stellt die Fahrtüchtigkeit bevorzugt durch Auswertung des Signals eines Lenkwinkelsensors fest, wobei insbesondere zusätzlich auch mindestens ein an das Steuergerät angeschlossener Fahrdynamiksensor (sogenannter ESP-Sensor) zur Plausibilisierung ausgewertet wird. Bei den ausgewerteten Fahrdynamiksensoren handelt es sich insbesondere um Sensoren aus der Gruppe:
- – Lenkwinkelsensor,
- – Gierratensensor und
- – Querbeschleunigungssensor.
- - steering angle sensor,
- - yaw rate sensor and
- - lateral acceleration sensor.
Vorzugsweise wird durch Betrachtung der Verläufe der durch diese Sensoren erzeugten Daten die eingeschränkte Reaktionszeit des Fahrers durch Bestimmung der Reaktionsgeschwindigkeit festgestellt bzw. die oben erwähnte Warnfunktion berechnet.Is preferred by consideration of the courses of the data generated by these sensors the limited response time of the driver by determining the reaction speed or the one mentioned above Warning function calculated.
Die Warnfunktion kann vorzugsweise durch Mitteln oder Filtern von über eine längere Zeit aufgenommenen Daten gebildet werden. Besonders bevorzugt kommen hierfür rekursive Filterfunktionen zum Einsatz.The warning function can preferably by averaging or filtering over a longer one Time recorded data are formed. Come especially preferred therefor recursive filter functions are used.
Neben den Fahrdynamiksensoren können bevorzugt zusätzlich weitere an das Steuergerät angeschlossene Sensoren ausgewertet werden, wie insbesondere Bremspedalweggeber oder Bremsdrucksensoren.In addition to the vehicle dynamics sensors can be preferred additionally more to the control unit Connected sensors are evaluated, such as brake pedal displacement sensors in particular or brake pressure sensors.
Außerdem können bevorzugt zusätzlich Motordaten erfasst und berücksichtig werden.In addition, motor data can preferably be added recorded and taken into account become.
Gemäß dem Verfahren der Erfindung wird zweckmäßigerweise zusätzlich ein Fahrererkennungsalgorithmus ausgeführt, welcher die Identität des Fahrers (konkrete Person) feststellt oder eine Fahrertyperkennung (z.B. Geschlecht, Alter etc.) durchführt. Dabei wird ausgenutzt, dass sich verschiedene Fahrer an Hand der sensorische gemessenen Fahrweise voneinander unterscheiden lassen. Durch die Erkennung des Fahrers oder die Fahrertyperkennung wird erreicht, dass die Grenz werte für die Fahruntüchtigkeitserkennung fahrerabhängig eingestellt werden können. Bevorzugt wird daher nach der Erfindung in Abhängigkeit von dem Fahrererkennungsalgorithmus eine Schwellenanpassung vorgenommen.According to the method of the invention will be convenient additionally a driver detection algorithm is executed which identifies the driver (specific person) or a driver type recognition (e.g. Gender, age, etc.). It takes advantage of the fact that different drivers use the differentiate between sensory measured driving style. By the recognition of the driver or the driver type recognition is achieved, that the limit values for the Unfit to drive recognition driver dependent can be adjusted. According to the invention, preference is therefore given to the driver detection algorithm a threshold adjustment was made.
Der Fahrererkennungsalgorithmus umfasst vorzugsweise die Erfassung von Fahrerprofilen sowie den Vergleich von aktuellen Fahrerprofilen mit hinterlegten Profilmustern.The driver detection algorithm preferably comprises recording driver profiles and comparing current ones Driver profiles with stored profile patterns.
Zur im vorstehend beschriebenen Absatz erwähnten Fahrererkennung lässt sich vorzugsweise mindestens eine sensorische Information auswerten, welche aus der Gruppe
- – Lenkwinkelsensor,
- – Beschleunigungssensor,
- – Raddrehzahlsensor oder
- – Gierratensensor
- - steering angle sensor,
- - acceleration sensor,
- - wheel speed sensor or
- - Yaw rate sensor
Zusätzlich können nach einer bevorzugten Ausführungsform des Fahrerkennungsverfahrens Informationen über die Kodierung eines Fahrzeugschlüssels oder über das Gewicht des Fahrzeugführers herangezogen werden, wobei diese an sich nicht bremsensteuergerätetypischen Informationen über einen an sich bekannten Fahrzeugdatenbus (z.B. CAN) zugänglich gemacht sein können.In addition, according to a preferred embodiment the driver identification procedure Information about the coding of a vehicle key or about the Weight of the driver can be used, whereby these are not typical for brake control units Information about a known vehicle data bus (e.g. CAN) made accessible could be.
Gemäß dem verfahren der Erfindung wird entweder der Fahrer gewarnt bzw. beeinflusst und/oder das Fahrzeug. Die Beeinflussung des Fahrzeugs besteht bevorzugt darin, dass die zurücklegbare Wegstrecke und/oder die Geschwindigkeit des Fahrzeugs durch Eingriff in die Fahrzeugelektronik limitiert wird. Die Limitierung kann insbesondere dadurch vorgenommen werden, dass zum Beispiel über den Fahrzeugdatenbus in die Motorsteuerung des Fahrzeugs eingegriffen wird.According to the method of the invention either the driver is warned or influenced and / or the vehicle. The influencing of the vehicle is preferably that the travelable Distance and / or the speed of the vehicle by intervention is limited in vehicle electronics. The limitation can in particular in that, for example, via the vehicle data bus in the engine control of the vehicle is intervened.
Vorzugsweise ermittelt das Verfahren zunächst während einer Einlernphase den Normalzustand für einen bestimmten Fahrer. In der Einlernphase wird eine für die Fahrtüchtigkeit maßgebende Größe mitgeschrieben, wobei diese Größe, die Informationen über den aktuellen Fahrzustand und die Fahreraktionen, die auf den aktuellen Fahrzustand einwirken, berücksichtigt. Weicht zu einem späteren Zeitpunkt die aktuelle Tüchtigkeitsgröße von der eingelernten Tüchtigkeitsgröße um ein vorgegebenes Maß vom Normalzustand ab, so wird eine Fahreruntüchtigkeit angenommen.The method preferably first determines the normal state for a specific driver during a learning phase. In the learning phase, a parameter that is decisive for the ability to drive is recorded, this parameter taking into account the information about the current driving state and the driver actions that influence the current driving state. If the current proficiency level deviates from the learned proficiency level by a predetermined amount from the normal state at a later point in time, a driver is efficiency accepted.
Besonders bevorzugt umfasst das Bremsensteuergerät eine Erfassungsfunktion (zum Beispiel ein Taster), mit der das vorstehend beschriebene Lernverfahren zurückgesetzt werden kann. Auch eine automatische Rücksetzung unter bestimmten Bedingungen kann vorgesehen sein.The brake control unit particularly preferably comprises a detection function (for example a button) with which the learning method described above reset can be. Also an automatic reset under certain conditions can be provided.
Die Erfindung betrifft außerdem ein elektronisches Bremsensteuergerät mit ESP bzw. TCS-Funktionalität, welches das vorstehend beschriebene Verfahren in einem Mikrorechner des Steuergeräts ausführt.The invention also relates to a electronic brake control unit with ESP or TCS functionality, which the method described above in a microcomputer of the control unit performs.
Weiterhin betrifft die Erfindung ein Computerprogrammprodukt, welches einen Algorithmus umfasst, der das weiter oben beschriebene Verfahren ausführen kann.The invention further relates to a computer program product which comprises an algorithm, who can carry out the method described above.
Das Verfahren gemäß der Erfindung als "Software-Zusatzfunktion" ohne eigene Hardware angesehen werden kann, ist in Form des Computerprogrammprodukts selbstverständlich auch eine Ausführung in einem getrennten Steuergerät im Sinne der Erfindung, wobei allerdings in diesem getrennten Fahrzeugsteuergerät die benötigten sensorischen Informationen ebenfalls zur Verfügung stehen müssen.The method according to the invention is regarded as a "software additional function" without its own hardware in the form of the computer program product is of course also an execution in a separate control unit in the sense of the invention, but in this separate vehicle control unit the required sensory Information also available have to stand.
Weitere bevorzugte Ausführungsformen ergeben sich aus den Unteransprüchen.Further preferred embodiments result from the subclaims.
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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DE200410003019 DE102004003019A1 (en) | 2003-01-21 | 2004-01-20 | Warning and correction of parameters of a road vehicle braking system provides for safe operation |
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