EP2010979A1 - Diagnostic de véhicule automobile et acceptation de véhicule - Google Patents

Diagnostic de véhicule automobile et acceptation de véhicule

Info

Publication number
EP2010979A1
EP2010979A1 EP07723987A EP07723987A EP2010979A1 EP 2010979 A1 EP2010979 A1 EP 2010979A1 EP 07723987 A EP07723987 A EP 07723987A EP 07723987 A EP07723987 A EP 07723987A EP 2010979 A1 EP2010979 A1 EP 2010979A1
Authority
EP
European Patent Office
Prior art keywords
diagnostic
vehicle
data
driving authorization
components
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Withdrawn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
EP07723987A
Other languages
German (de)
English (en)
Inventor
Martin Blanz
Thomas BÜCKLE
Gerald Grau
Ralf Lueg
Manuel Rieger
Markus Scholz
Ralf Traub
Klaus Weiss
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.)
Mercedes Benz Group AG
Original Assignee
DaimlerChrysler AG
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 DaimlerChrysler AG filed Critical DaimlerChrysler AG
Publication of EP2010979A1 publication Critical patent/EP2010979A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • G07C5/08—Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle or waiting time
    • G07C5/0841—Registering performance data
    • G07C5/085—Registering performance data using electronic data carriers
    • G07C5/0858—Registering performance data using electronic data carriers wherein the data carrier is removable
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B23/00—Testing or monitoring of control systems or parts thereof
    • G05B23/02—Electric testing or monitoring
    • G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
    • G05B23/0259—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the response to fault detection
    • G05B23/0264—Control of logging system, e.g. decision on which data to store; time-stamping measurements
    • 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
    • G07C5/08—Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle or waiting time
    • G07C5/0808—Diagnosing performance data
    • 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
    • G07C2205/00—Indexing scheme relating to group G07C5/00
    • G07C2205/02—Indexing scheme relating to group G07C5/00 using a vehicle scan tool
    • 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

Definitions

  • the invention relates to a motor vehicle diagnostic system for determining, storing and transmitting diagnostic data from control units in exnem motor vehicle on a computer outside the motor vehicle.
  • the system consists of components that are inside the vehicle and those that are outside the vehicle.
  • the onboard components are able to autonomously query and buffer diagnostic data from control units. With the help of the offboard components, the diagnostic data of the onboard components can be further processed.
  • Particular attention of the invention disclosed here lies in the support of the service employee in the vehicle reception of a service workshop.
  • a computer-aided diagnostic system that uses a diagnostic program from vehicle data and customer information to create a weighted list of potentially defective motor vehicle components is disclosed, for example, in German patent application DE 102005015664.
  • the identification of the possible error candidates takes place via an evaluation of a rule table reflecting the diagnostic knowledge.
  • the additional analysis of vehicle functions possibly affected by the error candidates also extends the troubleshooting space.
  • the service technician can restrict troubleshooting to selected fault codes or functions by setting a focus within the determined troubleshooting space. Only the selected error codes or functions will be possible Contestants further considered.
  • the error candidates belonging to this focus set are weighted by offsetting several error probabilities for error codes, components and affected functions.
  • still known error images which are coupled error codes that always occur together, can be used for the billing.
  • a focus is set for the further, automated troubleshooting by the diagnostic program.
  • the focus can be set by restricting to an error code or by restricting to a function.
  • this diagnostic program it is also possible to include customer information on functioning and non-functioning subsystems in the diagnostic process.
  • the diagnostic program allows in particular the processing of only symptomatic known malfunctions, as is usually the case with customer complaint.
  • An exemplary keyless go system for a motor vehicle is e.g. in German Patent DE 198 39 355 Cl.
  • Authentication data are stored in a chip on a chip card-like authentication element.
  • a microcontroller and communication systems in the form of transmitting and receiving units and a battery for supporting power supply of the microelectronic units are housed on the data carrier on the authentication element.
  • On the vehicle side there are also transmitting and receiving units which emit an electromagnetic field in a number of spatial zones around the vehicle via suitable antennas. If the authentication element is located within one of these room zones, a communication connection is established between a control device in the vehicle and the authentication element.
  • Both transponder key and Keyless Go authentication element thus have as a portable driving authorization cards on a readable and writable microelectronic chip and means for establishing a communication link.
  • the solution succeeds with a diagnostic system in which first the error messages which have occurred are collected and buffered onboard with a diagnostic short test implemented in a control unit of the vehicle and subsequently transferred to a memory area of the portable electronic driving authorization card.
  • the driving authorization card thus always contains the result of an onboard diagnostic short test.
  • the result of this diagnostic short test is stored in the memory of a service workshop in the customer's memory
  • Driving authorization card with a computer system read and processed with a building on the result of the diagnostic short test advanced diagnostic algorithm.
  • the advanced diagnostic algorithm brings in a selectable, alternative program loop in the form of a selection menu with input mask the service employee the read short test result on a display of the computer system in the customer's acceptance the individual error messages for display.
  • the service employee can then ask the driver in the customer acceptance for individual error messages for further information and enter the queried customer complaints as additional error symptoms for the selected error message in the advanced diagnostic system.
  • the diagnostic system from DE 102005015664 already mentioned in the introduction to the description, can be used, provided that it complements the system components of the diagnostic short test disclosed here and the read and write capabilities of the result of the short diagnostic test from the authorization cards becomes. The customer complaints then flow into the further diagnostic process.
  • the driving authorization cards are formed by a transponder key.
  • a reader for this transponder key must be held in the customer acceptance, which communicates with the computer system in the customer acceptance and with which the data can be read out of the transponder key and transferred to the computer system in the customer acceptance.
  • the driving authorization cards are formed by an authentication element of a keyless go system.
  • the transmitting and receiving system belonging to the Keyless Go system is connected to the computer system in the customer acceptance and thus the result of the diagnostic short test from the
  • Authentication element read and transferred to the computer system.
  • FIG. 1 is a graphical system overview of the main onboard and offboard components of a transponder key based system
  • FIG. 2 is a graphical system overview of the main onboard and offboard components of a Keyless Go based system
  • FIG. 3 is a possible process flow for customer service representative.
  • a first embodiment of the diagnostic system according to the invention is shown in FIG.
  • a motor vehicle electrical system several control units or microcontroller CUl, CU2, CU3, ... CUn are installed and take on different tasks and functions in the vehicle.
  • Each of these ECUs has a self-diagnostic routine that enables it to perform a self-test of its functions and to identify predefined errors and classify them with an error code. These possibly detected error codes are stored in fault memories in the electrical system.
  • the various control units are in communication with each other via at least one data bus.
  • the networking of the control devices with each other can also run on several different bus systems.
  • gateways which translate the different bus protocols.
  • About a diagnostic interface OBD can be accessed from the outside with a diagnostic tester on the communication network in the vehicle and thus on the connected Steuergräte and their error memory can be read.
  • Also connected to the communication network is the reading station 1 for the driving authorization system, which should be formed in the embodiment of FIG. 1 from a transponder key. If the transponder key is inserted into the read station, the drive authorization code is read from a chip on the transponder key and checked by a test program.
  • the development according to the invention now consists in implementing a diagnostic short test in one of the control devices or microcontrollers connected to the communication system in the vehicle.
  • This diagnostic short test includes the collection of the fault memory data and other vehicle data from the connected ECUs and geg.
  • the diagnostic short test therefore has the function of a data collector for onboard diagnostics data.
  • the electronic driving authorization card can be a transponder key as in FIG. 1 or a chip card as an authentication element a keyless go system, as in the exemplary embodiment of FIG. 2.
  • a suitable time for this data transfer in any case shortly after the start of the motor vehicle.
  • an identifier for the time is buffered. After the start of the internal combustion engine, the collected and cached data is transferred to the driver's license card for the first time.
  • Further transmissions can be trigger-controlled. Whenever a new error message is sent on one of the bus systems during operation of the vehicle, the diagnosis data is collected temporarily by the diagnostic short test and then immediately transferred to the memory area of the authorization card. A last transmission of the diagnostic data may possibly occur when the vehicle is parked. However, a data transfer to the driver's license may fail if the driver's license is removed too quickly by the driver. Caching of the collected diagnostic data is always possible with certainty. The last cached set of diagnostic data is transmitted in the event of a failed transmission attempt at the next start of the vehicle. On the driving authorization card, a microcontroller must monitor the transmission of the data and the storage. The last saved diagnostic data may only be overwritten if a transmission attempt was successful.
  • a buffer memory must be provided on the chip of the driving authorization card, in which the diagnostic data are initially stored in a volatile manner until complete transmission, before they are stored in a nonvolatile memory area of the chip.
  • the diagnostic data during operation of the vehicle can also be stored cyclically.
  • a special trigger condition may be provided to start dubbing the short test diagnostic result on the chip of the electronic driving authorization card shortly before the vehicle is parked.
  • the dubbing of the diagnostic data is then started by the program module of the diagnostic short test when the motor vehicle falls below a speed of 10 km / h.
  • the flow control of the diagnostic short test on the communication system of the vehicle the current Velocity read.
  • Vehicle speed detection may include hysteresis detection, which detects when the vehicle is repeatedly accelerating and decelerating around the 10 km / h barrier in stop and go traffic. In this case, a transmission is then not carried out every time the 10 km / h limit is crossed, but, for example, only when the vehicle has been moved to a higher speed for a longer time.
  • the diagnostic data are read from the chip of the driving authorization card with an offboard diagnostic system 3 and further processed with the offboard diagnostic system.
  • both input options, ie for transponder keys and for keyless go systems, should be connected to the computer system in the customer reception.
  • the computer system 3 is in communication with the customer acceptance with further powerful computer systems and databases of the offboard diagnostic system.
  • Networking with a diagnostic server and a central customer database in a service center is already standard in off-board diagnostic systems and can also be used advantageously in connection with this invention.
  • the data volumes to be transmitted are reduced in a method which is advantageous in particular for keyless go systems with a checksum check.
  • the power supply of the electronic component in the authentication element takes place exclusively via an integrated battery.
  • This can be avoided according to the invention by forming a check sum over the transmitted user data or diagnostic data after a first successful storage of an onboard short test result and after its successful transmission to the chip of the electronic driving authorization card. Date and time are excluded from the checksum.
  • FIG. 2 is given an overview of the main components of a diagnostic system according to the invention for Keyless Go driving authorization systems.
  • Vehicle electrical system architecture, communication systems of the control units in the vehicle and control units in the vehicle remain the same as in the embodiment of Figure 1.
  • the offboard diagnostic system with its possible server networking and its database connections remains essentially the same.
  • a computer system is networked in the customer acceptance with the offboard diagnostic system. Differences arise through the Keyless Go system. Adaptations are necessary with regard to the transmitting and receiving devices for the operation of the Keyless Go system.
  • At least one transmitting and receiving unit S / E for reading in the chip data from the authentication element 20 must be present in the vehicle.
  • the unit is also networked with the bus systems in the vehicle.
  • An identical or similar transmitting and receiving unit is connected in the customer acceptance to the local computer system 3.
  • the computer system in parallel has a reader Ia for transponder key.
  • the diagnostic short test implemented in the vehicle in a control unit operates according to the same or similar method as already disclosed in the exemplary embodiment according to FIG. 1. However, the diagnostic data is stored in a memory area of the smart card of the
  • the connection of the onboard diagnostic short test with an offboard diagnostic system and with a computer system in the customer acceptance allows, for example, a workflow in the customer acceptance, as shown in FIG.
  • the result of the onboard diagnostic short test is read into the computer system 3 installed in the customer acceptance, where it is already preprocessed by a program module of the diagnostic program running in the background.
  • the extent to which the short test result is processed depends on the actual offboard diagnostic system used.
  • the result of the short test with its error messages is displayed to the service employee. This is done with a selection menu, from which the service employee can select individual menu items, and further to these selected menu items can enter machine-processable customer information, which he can request from the driver when the vehicle key or Keyless Go
  • the machine processability can hereby be secured by an input mask in that the off-board diagnostic program running in the background queries further environmental data in a menu for a selected reported error, for which the service employee fulfills the corresponding alternative in the customer survey or does not fulfill it in a selection menu on the system display can register.
  • Z, B a symptom selection that collects information such as sounds, functioning and non-functioning features, odors, etc. from the customer information.
  • the information, symptoms and diagnostic data thus obtained are transmitted by the diagnostic program, e.g. run on a server 31, processed by evaluating an associated database 32 and / or given for further workshop diagnosis and repair on a diagnostic tester 30, which is connected to the diagnostic interface of the motor vehicle 35.
  • Targeted cause tests 33 can then be carried out with the tester and the further workshop process 34 generated from the test results.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Lock And Its Accessories (AREA)

Abstract

L'invention concerne un système de diagnostic avec lequel les messages d'erreur survenant sont initialement collectés et mémorisés temporairement à bord avec un test de diagnostic réduit mis en oevre dans un module de commande du véhicule et sont ensuite transmis dans une zone de mémoire du badge d'autorisation de circulation électronique portable. Le badge d'autorisation de circulation contient aussi toujours le résultat d'un test de diagnostic réduit réalisé à bord. Le résultat de ce test de diagnostic réduit est chargé dans l'acceptation par le client au sein d'un atelier de S.A.V. depuis la mémoire du badge d'autorisation de circulation par un système informatique, puis traité par un algorithme de diagnostic supplémentaire en se basant sur le résultat du test de diagnostic réduit.
EP07723987A 2006-04-22 2007-04-04 Diagnostic de véhicule automobile et acceptation de véhicule Withdrawn EP2010979A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006018831A DE102006018831A1 (de) 2006-04-22 2006-04-22 Kraftfahrzeugdiagnose und Fahrzeugannahme
PCT/EP2007/003046 WO2007121839A1 (fr) 2006-04-22 2007-04-04 Diagnostic de véhicule automobile et acceptation de véhicule

Publications (1)

Publication Number Publication Date
EP2010979A1 true EP2010979A1 (fr) 2009-01-07

Family

ID=38141221

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07723987A Withdrawn EP2010979A1 (fr) 2006-04-22 2007-04-04 Diagnostic de véhicule automobile et acceptation de véhicule

Country Status (4)

Country Link
US (1) US20090306849A1 (fr)
EP (1) EP2010979A1 (fr)
DE (1) DE102006018831A1 (fr)
WO (1) WO2007121839A1 (fr)

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Also Published As

Publication number Publication date
DE102006018831A1 (de) 2007-10-25
US20090306849A1 (en) 2009-12-10
WO2007121839A1 (fr) 2007-11-01

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