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EP1644231A1 - Device for communicating with control devices in a vehicle - Google Patents

Device for communicating with control devices in a vehicle

Info

Publication number
EP1644231A1
EP1644231A1 EP04741927A EP04741927A EP1644231A1 EP 1644231 A1 EP1644231 A1 EP 1644231A1 EP 04741927 A EP04741927 A EP 04741927A EP 04741927 A EP04741927 A EP 04741927A EP 1644231 A1 EP1644231 A1 EP 1644231A1
Authority
EP
European Patent Office
Prior art keywords
vehicle
control device
external device
interface
transmitting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP04741927A
Other languages
German (de)
French (fr)
Inventor
Martin Griesser
Stephan STÖLZL
Stephan Groitzsch
Arno Gahler
Sebastian Joussen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Continental Teves AG and Co OHG
Original Assignee
Continental Teves AG and Co OHG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Continental Teves AG and Co OHG filed Critical Continental Teves AG and Co OHG
Publication of EP1644231A1 publication Critical patent/EP1644231A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • 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
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/88—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means
    • B60T8/885—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means using electrical circuitry
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F8/00—Arrangements for software engineering
    • G06F8/60—Software deployment
    • G06F8/65—Updates
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C5/00—Registering or indicating the working of vehicles
    • G07C5/008—Registering or indicating the working of vehicles communicating information to a remotely located station
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/34—Network arrangements or protocols for supporting network services or applications involving the movement of software or configuration parameters 
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/40—Network security protocols
    • 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
    • B60T2270/00—Further aspects of brake control systems not otherwise provided for
    • B60T2270/40—Failsafe aspects of brake control systems
    • B60T2270/406—Test-mode; Self-diagnosis
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
    • H04L67/125—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks involving control of end-device applications over a network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/30—Definitions, standards or architectural aspects of layered protocol stacks
    • H04L69/32—Architecture of open systems interconnection [OSI] 7-layer type protocol stacks, e.g. the interfaces between the data link level and the physical level
    • H04L69/322—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions
    • H04L69/329—Intralayer communication protocols among peer entities or protocol data unit [PDU] definitions in the application layer [OSI layer 7]

Definitions

  • the invention relates to a control device according to the preamble of claim 1, an external device according to the preamble of claim 4 and a method for activating and / or expanding and / or modifying software modules or parts of a software module.
  • the vehicle network is connected to an external unit via a so-called diagnostic connector and a cable (production or service tool ,,) - which transmits data to the individual control units and which data receives from the control unit.
  • a so-called diagnostic connector and a cable production or service tool ,,
  • the invention has for its object to improve the communication between the control devices of a vehicle and an external device.
  • activation and / or expansion and / or modification of software modules or parts of a software module can be carried out.
  • a functional improvement, functional expansion, functional activation of software can be brought about.
  • new software functions can be transferred to the control unit.
  • status information can also be transmitted via the existing control unit (eg OES status; original equipment supplier). So it is possible, among other things, that the end customer of a software can obtain the corresponding "software product" directly from the manufacturer without going through the workshop.
  • wireless communication is used to transmit the information.
  • the vehicle network bus system
  • an external device e.g. production or service tool
  • the wireless control unit access gives the opportunity to transmit information during vehicle production. This eliminates the usual connection between the vehicle and a "production or service tool" with a data cable. In addition, for the first time, data transmission can also be carried out particularly easily over several production steps. This brings in particular Programming advantages (, flashing); Coding (eg adaptation to vehicle variant); Compatibility management (hardware and software); Tracking, recording and analysis of processes (tracking) and for testing the control units, as well as for the calibration of connected sensors and actuators.
  • the wireless control unit access enables error diagnosis (e.g. "On Board” diagnosis), coding (e.g. activation of additional functions) when you are in the workshop.
  • error diagnosis e.g. "On Board” diagnosis
  • coding e.g. activation of additional functions
  • updates updates
  • additional functions upgrades
  • the method for wireless communication is set up in such a way that it is suitable for communication over distances of more than approximately 5 km. This results in largely location-independent wireless control device access over long distances. In this way it is possible to carry out the above updates even without a visit to the workshop, either with or without customer request.
  • transmitter / receiver units (cell phone networks, cell phones, etc.) that are already in the vehicle to carry out the method according to the invention.
  • transmitter / receiver units cell phone networks, cell phones, etc.
  • a combination with the following devices in the vehicle is possible: Keyless entry device (Keyless Entry) Direct tire pressure monitoring (radio link between sensor and receiver, TPMS) Mobile or car phone (cell-phone)
  • a connection between the control device and an additional hardware resource can preferably be established via a bus or a network. This connection is controlled by telemetry. Data transmitted to the vehicle (e.g. downloads) is particularly preferably transferred to the new resource at a later point in time.
  • the vehicle mentioned above is preferably a motor vehicle which is equipped with at least one electronic control device, such as an electronic brake control device.
  • the motor vehicle can be a passenger vehicle or a truck.
  • the software module which is modified or installed according to the invention, is preferably a method for detecting a tire pressure loss on the basis of the wheel speed information (so-called indirectly measuring tire pressure loss detection system; DDS).
  • the software module can also be any other software functions that are carried out in control units, such as ABS (anti-lock braking system), ASR (traction control system), ESP (electronic stability program) and TPMS (tire pressure control based on pressure sensors located in the tire).
  • the desired software module (upgrade, patch, new version, etc.) is kept in an application management database for the operators of the control devices (in particular motor vehicle customers), so that the customer can do this as desired can be downloaded directly (download).
  • the suppliers preferably have an interface via which they can communicate if necessary to change the content of the application management database.
  • every data transmission process is protected against access by third parties (eavesdropping, eavesdropping) by suitable measures such as encryption.
  • the control device or other suitable devices within the motor vehicle communicate with the application management database.
  • data about the vehicle type and / or about the configuration in the vehicle are transmitted from the vehicle to the application management database, so that the suitable version of the software module can be determined independently by the application management database.
  • the vehicle customer only needs to state which type of application is to be changed. Version-dependent or vehicle-dependent entries are then not required.
  • FIG. 1 shows a motor vehicle which can communicate with an application management database via a wireless telemetry device.
  • Motor vehicle 2 includes an electronic brake control device 1, which contains a microcontroller and a changeable ROM memory (e.g. flash ROM) for performing a wide variety of control and regulation tasks (ABS, ESP etc.).
  • the control unit is connected to other electronic hardware devices 4, 10 via CAN bus 9.
  • 4 denotes a mobile radio device with antenna 6 for communication with the outside world.
  • Memory 10 is also connected to CAN bus 9 by means of interface electronics.
  • Database 3 also includes other software functions, such as ABS, ASR, ESP, DDS, etc.
  • ASR ASR
  • ESP ESP
  • DDS DDS
  • the application database can also be shared across manufacturers by a group of companies and arranged centrally. It is also possible to provide an application database with country-specific software in every country.

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Software Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Stored Programmes (AREA)
  • Regulating Braking Force (AREA)

Abstract

The invention relates to a control device (1), especially for use in a motor vehicle (2) for the wireless communication using a telemetric device (4 7). Said control device comprises an interface (8) for activating and/or expanding and/or modifying software modules or components of a software module by means of an external device (3), said modules/components being stored in a memory of the control device. As a result, software expansions and adaptations can be carried out in an especially simple manner.

Description

Einrichtung zur Kommunikation mit Steuergeräten in einem FahrzeugDevice for communicating with control units in a vehicle
Die Erfindung betrifft ein Steuergerät gemäß Oberbegriff von Anspruc 1- ein externes Gerät gemäß Oberbegriff von Anspruch 4 sowie ein Verfahren zur Aktivierung und/oder Erweiterung und/oder Modifikation von Softwaremodulen oder Teilen eines Softwaremoduls .The invention relates to a control device according to the preamble of claim 1, an external device according to the preamble of claim 4 and a method for activating and / or expanding and / or modifying software modules or parts of a software module.
Zur Programmierung- Codierung- zum Testen, zur Sensorkalibrierung- Fehlerdiagnose usw. von elektronischen Steuergeräten in einem Fahrzeug ist eine Ko munikationsschnittsteile zwischen den Steuergeräten und der Außenwelt erforderlich.For programming, coding, testing, sensor calibration, fault diagnosis, etc. of electronic control units in a vehicle, a communication interface between the control units and the outside world is required.
Es sind Kommunikationsschnittstellen bekannt, die hierzu eine drahtgebundene Kommunikation einsetzen.Communication interfaces are known which use wired communication for this purpose.
Dabei wird während der Produktion bzw. in der Werkstatt das Fahrzeugnetzwerk über einen sogenannten Diagnosestecker und ein Kabel mit einer externen Einheit verbunden (Produktionsbzw. Service-Tool,,) - welche den einzelnen Steuergeräten Daten übermittelt und welche Daten vom Steuergerät empfängt.During production or in the workshop, the vehicle network is connected to an external unit via a so-called diagnostic connector and a cable (production or service tool ,,) - which transmits data to the individual control units and which data receives from the control unit.
Der Erfindung liegt die Aufgabe zugrunde, die Kommunikation zwischen den Steuergeräten eines Fahrzeugs und einem externen Gerät zu verbessern.The invention has for its object to improve the communication between the control devices of a vehicle and an external device.
Diese Aufgabe wird erfindungsgemäß durch die Merkmale des Anspruchs 1 gelöst.This object is achieved according to the invention by the features of claim 1.
Gemäß dem Verfahren nach der Erfindung, welches mit der anspruchsgemäßen Einrichtung, dem externen Gerät und dem Steuergerät durchführbar ist, kann eine Aktivierung und/oder Erweiterung und/oder Modifikation von Softwaremodulen oder Teilen eines Softwaremoduls vorgenommen werden. Hierdurch lässt sich z.B. eine Funktionsverbesserung, Funktionserweiterung, Funktionsfreischaltung von Software herbeiführen. Außerdem können neue Software-Funktionen in das Steuergerät übertragen werden. Es können aber auch Status-Informationen über das vorhandene Steuergerät übermittelt werden (z.B. OES-Status; Original Equipment Supplier) . So ist es unter anderem möglich, dass der Endkunde einer Software das entsprechende "Software-Produkt" direkt vom Hersteller ohne Umweg über die Werkstatt beziehen kann.According to the method according to the invention, which can be carried out with the claimed device, the external device and the control device, activation and / or expansion and / or modification of software modules or parts of a software module can be carried out. hereby For example, a functional improvement, functional expansion, functional activation of software can be brought about. In addition, new software functions can be transferred to the control unit. However, status information can also be transmitted via the existing control unit (eg OES status; original equipment supplier). So it is possible, among other things, that the end customer of a software can obtain the corresponding "software product" directly from the manufacturer without going through the workshop.
Anstelle einer drahtgebundenen Kommunikation wird zur Übertragung der Information eine drahtlose Kommunikation eingesetzt. Diese erfordert eine Sende-/Empfangseinheit im Fahrzeug, welche direkt oder indirekt mit dem Steuergerät, z.B. über ein Interface mit dem Fahrzeugnetzwerk (Bussystem) verbunden ist und eine weitere, die mit einem externen Gerät (z.B. Produktions- bzw. Service-Tool) in Verbindung steht.Instead of wired communication, wireless communication is used to transmit the information. This requires a transmitter / receiver unit in the vehicle, which is connected directly or indirectly to the control unit, e.g. is connected via an interface to the vehicle network (bus system) and another that is connected to an external device (e.g. production or service tool).
Durch den drahtlosen Zugang zum Fahrzeugnetzwerk ist es möglich, mit allen vernetzten Steuergeräten zu kommunizieren, ohne dass zwischen Fahrzeug und Außenwelt eine Verdrahtung nötig ist.With wireless access to the vehicle network, it is possible to communicate with all networked control units without the need for wiring between the vehicle and the outside world.
Dieser Ansatz ermöglicht einen zeitsparenden, verschleißfreien (Diagnosestecker) Zugang zu den Steuergeräten welcher in folgenden Situationen zum Einsatz kommen kann:This approach enables time-saving, wear-free (diagnostic connector) access to the control units, which can be used in the following situations:
Zunächst ergibt sich durch den drahtlosen Steuergerätezugang die Möglichkeit, Information während der Fahrzeugproduktion zu übertragen. Hierdurch entfällt die sonst übliche Verbindung von Fahrzeug und einem "Produktions- bzw. Service-Tool" mit einem Datenkabel. Außerdem kann die Datenübertragung erstmals auch über mehrere Produktionsschritte hinweg besonders einfach durchgeführt werden. Dies bringt insbesondere Vorteile bei der Programmierung (,Flashen ); Codierung (z.B. Anpassung an Fahrzeugvariante) ; Kompatibilitätsmangagement (Hardware und Software) ; Verfolgung, Aufzeichnung und Analyse von Vorgängen (Tracking) und zum Testen der Steuergeräte, sowie bei der Kalibrierung von- angeschlossenen Sensoren und Aktuatoren.First of all, the wireless control unit access gives the opportunity to transmit information during vehicle production. This eliminates the usual connection between the vehicle and a "production or service tool" with a data cable. In addition, for the first time, data transmission can also be carried out particularly easily over several production steps. This brings in particular Programming advantages (, flashing); Coding (eg adaptation to vehicle variant); Compatibility management (hardware and software); Tracking, recording and analysis of processes (tracking) and for testing the control units, as well as for the calibration of connected sensors and actuators.
Weiterhin ermöglicht der drahtlose Steuergerätezugang eine Fehlerdiagnose (z.B. "On Board"-Diagnose) , Codierung (z.B. Aktivierung von Zusatzfunktionen) bei einem Aufenthalt in der Werkstatt. Hier können auch Aktualisierungen (Updates) oder Zusatzfunktionen (Upgrades) von Software in die entsprechenden Steuergeräte eingespielt werden.Furthermore, the wireless control unit access enables error diagnosis (e.g. "On Board" diagnosis), coding (e.g. activation of additional functions) when you are in the workshop. Here, updates (updates) or additional functions (upgrades) of software can also be imported into the corresponding control units.
Es ist dabei zweckmäßig, wenn das Verfahren zur drahtlosen Kommunikation so eingerichtet wird, dass dieses zur Kommunikation über Entfernungen von mehr als etwa 5 km geeignet ist. Hierdurch ergibt sich ein weitestgehend ortsunabhängiger drahtloser Steuergerätezugang über große Entfernungen. Auf diese Weise ist es möglich, die obigen Aktualisierungen auch ohne einen Werkstattbesuch, entweder mit oder ohne Kundenanforderung durchzuführen .It is expedient if the method for wireless communication is set up in such a way that it is suitable for communication over distances of more than approximately 5 km. This results in largely location-independent wireless control device access over long distances. In this way it is possible to carry out the above updates even without a visit to the workshop, either with or without customer request.
Außerdem besteht die Möglichkeit, zur Durchführung des erfindungsgemäßen Verfahren bereits im Fahrzeug vorhandene Sende-/Empfangseinheiten (Mobiltelefonnetze, Cellphone etc.) mitzunutzen. Prinzipiell ist es also möglich die zum oben beschriebenen Zweck notwendige Sende-/Empfangseinheit im Fahrzeug mit bereits bestehenden Einrichtungen zu koppeln. So ist beispielsweise eine Kombination mit folgenden Einrichtungen im Fahrzeug möglich: Schlüssellose Schließeinrichtung ("Keyless Entry") Direkte Reifendrucküberwachung (Funkstrecke zwischen Sensor und Empfänger, TPMS) Mobil- bzw. Autotelefon (cell-phone)In addition, there is the possibility of using transmitter / receiver units (cell phone networks, cell phones, etc.) that are already in the vehicle to carry out the method according to the invention. In principle, it is therefore possible to couple the transmitting / receiving unit necessary for the purpose described above in the vehicle with already existing devices. For example, a combination with the following devices in the vehicle is possible: Keyless entry device (Keyless Entry) Direct tire pressure monitoring (radio link between sensor and receiver, TPMS) Mobile or car phone (cell-phone)
Vorzugsweise kann über einen Bus oder ein Netzwerk eine Verbindung zwischen dem Steuergerät und einer zusätzliche Hardwareressource (z.B. ein Zusatzspeicher) hergestellt werden. Diese Verbindung erfolgt telemetrisch gesteuert. Besonders bevorzugt werden zu einem späteren Zeitpunkt an das Fahrzeug übertragene Daten (z.B. Downloads) in die neue Ressource übertragen .A connection between the control device and an additional hardware resource (e.g. an additional memory) can preferably be established via a bus or a network. This connection is controlled by telemetry. Data transmitted to the vehicle (e.g. downloads) is particularly preferably transferred to the new resource at a later point in time.
Das weiter oben erwähnte Fahrzeug ist bevorzugt ein Kraftfahrzeug, welches mit zumindest einem elektronischen Steuergerät, wie zum Beispiel einem elektronischen Bremsensteuergerät ausgestattet ist. Bei dem Kraftfahrzeug kann es sich um ein Personenkraftfahrzeug oder ein Lastkraftfahrzeug handeln.The vehicle mentioned above is preferably a motor vehicle which is equipped with at least one electronic control device, such as an electronic brake control device. The motor vehicle can be a passenger vehicle or a truck.
Bei dem Software-Modul, welches nach der Erfindung geändert oder installiert wird, handelt es sich bevorzugt um ein Verfahren zur Erkennung eines Reifendruckverlusts auf Basis der Raddrehzahlinformation (sogenanntes indirekt messendes Rei- fendruckverlusterkennungsSystem; DDS) . Es kann sich bei dem Software-Modul aber auch um beliebige andere Software- Funktionen handeln, die in Steuergeräten ausgeführt werden, wie z.B. ABS (Antiblockiersystem) , ASR (Antriebsschlupfrege- lung) , ESP (Elektronisches Stabilitätsprogramm) und TPMS (Reifendruckkontrolle auf Basis von Druckssensoren, die im Reifen angeordnet sind) .The software module, which is modified or installed according to the invention, is preferably a method for detecting a tire pressure loss on the basis of the wheel speed information (so-called indirectly measuring tire pressure loss detection system; DDS). However, the software module can also be any other software functions that are carried out in control units, such as ABS (anti-lock braking system), ASR (traction control system), ESP (electronic stability program) and TPMS (tire pressure control based on pressure sensors located in the tire).
Nach einer bevorzugten Ausführungsform der Erfindung wird jeweils das gewünschte Software-Modul (Upgrade, Patch, neue Version etc.) auf einer Applikationsmanagement-Datenbank für die Betreiber der Steuergeräte (Insbesondere die Kraftfahrzeugkunden) vorgehalten, so dass diese beliebig vom Kunden direkt heruntergeladen werden können (Download) . Die Lieferanten besitzen bevorzugt eine Schnittstelle, über die sie bei Bedarf zur Änderung des Inhalts der Applikationsmanagement-Datenbank kommunizieren können. Dabei ist insbesondere jeder Datenübertragungsvorgang vor dem Zugriff Dritter (Mithören, Lauschen) durch geeignete Maßnahmen, wie Verschlüsselung geschützt.According to a preferred embodiment of the invention, the desired software module (upgrade, patch, new version, etc.) is kept in an application management database for the operators of the control devices (in particular motor vehicle customers), so that the customer can do this as desired can be downloaded directly (download). The suppliers preferably have an interface via which they can communicate if necessary to change the content of the application management database. In particular, every data transmission process is protected against access by third parties (eavesdropping, eavesdropping) by suitable measures such as encryption.
In der Kommunikationseinrichtung ist zweckmäßigerweise vorgesehen, dass das Steuergerät oder andere geeignete Einrichtungen innerhalb des Kraftfahrzeugs mit der Applikationsmanagement-Datenbank kommuniziert. Dabei werden u.a. vom Fahrzeug Daten über den Fahrzeugtyp und/oder über die im Fahrzeug vorhandene Konfiguration an die Applikationsmanagement- Datenbank übermittelt, so dass die geeignete Version des Software-Moduls von der Applikationsmanagement-Datenbank selbstständig festgestellt werden kann. Vorteilhafterweise braucht der Fahrzeugkunde nur mitzuteilen, welche Art der Anwendung geändert werden soll. Versionsabhängige oder fahrzeugabhängige Eingaben sind dann nicht erforderlich.It is expediently provided in the communication device that the control device or other suitable devices within the motor vehicle communicate with the application management database. Among other things, data about the vehicle type and / or about the configuration in the vehicle are transmitted from the vehicle to the application management database, so that the suitable version of the software module can be determined independently by the application management database. Advantageously, the vehicle customer only needs to state which type of application is to be changed. Version-dependent or vehicle-dependent entries are then not required.
Es ist auch möglich, dass an Stelle der Übermittlung des Software-Moduls dieses bereits im Steuergerät gespeichert, jedoch zunächst noch nicht aktiviert ist. Der Fahrzeugkunde kann dann durch Kommunikation mit der Applikationsmanagement-Datenbank oder einer Service-Stelle das nicht aktivierte Software-Modul tele etrisch freischalten lassen.It is also possible that instead of transmitting the software module, it is already stored in the control unit, but is not yet activated at first. The vehicle customer can then have the non-activated software module tele etrically activated by communication with the application management database or a service point.
Weitere bevorzugte Ausführungsformen ergeben sich aus den Unteransprüchen und der nachfolgenden Beschreibung der Figuren.Further preferred embodiments result from the subclaims and the following description of the figures.
Nachfolgend wird die Erfindung an Hand eines Beispiels näher erläutert . Es zeigtThe invention is explained in more detail below using an example. It shows
Fig. 1 ein Kraftfahrzeug, welches über eine drahtlose Telemetrieeinrichtung mit einer Applikationsmanagement-Datenbank kommunizieren kann.1 shows a motor vehicle which can communicate with an application management database via a wireless telemetry device.
Kraftfahrzeug 2 umfasst ein elektronisches Bremsensteuergerät 1, welches einen Mikrocontroller und einen veränderbaren ROM-Speicher (z.B. Flash-ROM) zur Ausführung unterschiedlichster Steuer- und Regelaufgaben (ABS, ESP etc.) enthält. Über CAN-Bus 9 ist das Steuergerät mit anderen elektronischen Hardwareeinrichtungen 4, 10 verbunden. 4 bezeichnet eine Mobilfunkeinrichtung mit Antenne 6 zur Kommunikation mit der Außenwelt. Speicher 10 ist ebenfalls mittels einer Schnittstellenelektronik mit CAN-Bus 9 verbunden.Motor vehicle 2 includes an electronic brake control device 1, which contains a microcontroller and a changeable ROM memory (e.g. flash ROM) for performing a wide variety of control and regulation tasks (ABS, ESP etc.). The control unit is connected to other electronic hardware devices 4, 10 via CAN bus 9. 4 denotes a mobile radio device with antenna 6 for communication with the outside world. Memory 10 is also connected to CAN bus 9 by means of interface electronics.
In Applikations-Mangagement-Datenbank 3 sind unterschiedliche Versionen und Updates einer Reifendruckerkennungssoftware gespeichert. Ggf. umfasst Datenbank 3 auch andere Software Funktionen, wie ABS, ASR, ESP, DDS usw. Auf Anfrage des Fahrzeughalters oder auf Veranlassung der Fahrzeugherstellers hin können aktuelle Versionen der Software drahtlos über große Entfernungen an das Steuergerät 1 übermittelt werden. Die Applikationsdatenbank kann auch Herstellerübergreifend von einer Gruppe von Firmen gemeinsam genutzt werden und Zentral angeordnet werden. Es ist weiterhin möglich, in jedem Land eine Applikationsdatenbank mit länderspezifischer Software vorzusehen. Different versions and updates of tire pressure detection software are stored in application management database 3. Possibly. Database 3 also includes other software functions, such as ABS, ASR, ESP, DDS, etc. At the request of the vehicle owner or at the instigation of the vehicle manufacturer, current versions of the software can be transmitted wirelessly to control unit 1 over long distances. The application database can also be shared across manufacturers by a group of companies and arranged centrally. It is also possible to provide an application database with country-specific software in every country.

Claims

Patentansprüche claims
1. Steuergerät (1), insbesondere in einem Kraftfahrzeug (2) , umfassend eine Schnittstelle (8) zur Aktivierung und/oder Erweiterung und/oder Modifikation von Softwaremodulen oder Teilen eines Softwaremoduls durch ein externes Gerät (3) , die innerhalb eines Speichers des Steuergeräts gespeichert sind, dadurch gekennzeichnet, dass die über die Schnittstelle durchgeführte Kommunikation drahtlos mittels einer telemetrischen Einrichtung (4...7) erfolgt.1. Control device (1), in particular in a motor vehicle (2), comprising an interface (8) for activating and / or expanding and / or modifying software modules or parts of a software module by means of an external device (3), which is located within a memory of the Control units are stored, characterized in that the communication carried out via the interface takes place wirelessly by means of a telemetric device (4 ... 7).
2. Steuergerät nach Anspruch 1, dadurch gekennzeichnet, dass der Datentransport während der telemetrischen Übermittlung durch eine Sicherheitseinrichtung abgesichert ist.2. Control device according to claim 1, characterized in that the data transport is secured during the telemetric transmission by a security device.
3. Steuergerät nach Anspruch 1 oder 2 , dadurch gekennzeichnet, dass über einen Bus oder ein Netzwerk (9) zusätzliche Hardwareressourcen (10) telemetrisch gesteuert mit dem Steuergerät verbunden werden können.3. Control device according to claim 1 or 2, characterized in that additional hardware resources (10) can be connected telemetrically controlled to the control device via a bus or a network (9).
4. Externes Gerät (3) zur Kommunikation mit einem Steuergerät zur Aktivierung und/oder Erweiterung und/oder Modifikation von Softwaremodulen oder Teilen eines Softwaremoduls, dadurch gekennzeichnet, dass das externe Gerät ein Produktions- und/oder Service Gerät und/oder eine Applikations-Datenbank ist, das/die über ein Interface (11) mit einer Sende- und Empfangseinheit (5) verbunden ist oder eine Sende- und Empfangseinheit umfasst.4. External device (3) for communication with a control device for activating and / or expanding and / or modifying software modules or parts of a software module, characterized in that the external device is a production and / or service device and / or an application device. Database which is connected via an interface (11) to a transmitting and receiving unit (5) or comprises a transmitting and receiving unit.
5. Einrichtung umfassend ein Kraftfahrzeug mit einem Steuergerät nach Anspruch 1 und einem externen Gerät, insbesondere einem externen Gerät gemäß Anspruch 3, dadurch gekennzeichnet, dass das Fahrzeug eine Sende- und Empfangseinheit (4) aufweist, welche über einen Bus oder ein Netzwerk (9) im Fahrzeug (2) verbunden ist, wobei insbesondere die Sende- und Empfangseinheit (4) über ein Interface mit dem Bus oder ein Netzwerk (9) verbunden ist.5. Device comprising a motor vehicle with a control device according to claim 1 and an external device, in particular an external device according to claim 3, thereby characterized in that the vehicle has a transmitting and receiving unit (4) which is connected via a bus or a network (9) in the vehicle (2), in particular the transmitting and receiving unit (4) via an interface with the bus or a network (9) is connected.
6. Verfahren zur Aktivierung und/oder Erweiterung und/oder Modifikation von Softwaremodulen oder Teilen eines Softwaremoduls mit Hilfe einer telemetrischen Einrichtung gemäß Anspruch 5.6. A method for activating and / or expanding and / or modifying software modules or parts of a software module with the aid of a telemetric device according to claim 5.
7. Verfahren nach Anspruch 6, dadurch gekennzeichnet, dass die Aktivierung und/oder Erweiterung und/oder Modifikation ausschließlich durch Anschluss eines Zusatzgerätes (z.B. CD-ROM-Laufwerk, Diagnosetestgerät) im Bereich des Fahrzeugs und/oder im Bereich des externen Geräts (2) durchgeführt werden kann. 7. The method according to claim 6, characterized in that the activation and / or expansion and / or modification exclusively by connecting an additional device (eg CD-ROM drive, diagnostic test device) in the area of the vehicle and / or in the area of the external device (2 ) can be carried out.
EP04741927A 2003-07-04 2004-06-30 Device for communicating with control devices in a vehicle Withdrawn EP1644231A1 (en)

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