EP0661673A1 - Verfahren zur Fahrzeugspflegeverwaltung, Bordcomputer und dazugehörende diagnostische Station zur Durchführung dieses Verfahrens - Google Patents

Verfahren zur Fahrzeugspflegeverwaltung, Bordcomputer und dazugehörende diagnostische Station zur Durchführung dieses Verfahrens Download PDF

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Publication number
EP0661673A1
EP0661673A1 EP94118975A EP94118975A EP0661673A1 EP 0661673 A1 EP0661673 A1 EP 0661673A1 EP 94118975 A EP94118975 A EP 94118975A EP 94118975 A EP94118975 A EP 94118975A EP 0661673 A1 EP0661673 A1 EP 0661673A1
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EP
European Patent Office
Prior art keywords
maintenance
wear
vehicle
distance
parameters
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Withdrawn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
EP94118975A
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English (en)
French (fr)
Inventor
Wilfrid Frencia
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.)
Valeo Electronique SA
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Valeo Electronique SA
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Filing date
Publication date
Application filed by Valeo Electronique SA filed Critical Valeo Electronique SA
Publication of EP0661673A1 publication Critical patent/EP0661673A1/de
Withdrawn legal-status Critical Current

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    • 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
    • G07C5/00—Registering or indicating the working of vehicles
    • G07C5/006—Indicating maintenance

Definitions

  • the present invention relates to a method for managing the maintenance of a vehicle, as well as an on-board computer and an associated diagnostic station implementing the method.
  • the manufacturer's warranty may only apply if these visits are made in time.
  • the user may not follow these prescriptions for personal reasons, or because he cannot physically.
  • the vehicle does not receive its maintenance visit, which reduces its forecast reliability, and the owner of the vehicle may lose the benefit of its warranty.
  • the logbook is produced in computer form.
  • the various maintenance phases are recorded on an electronic memory medium like a memory card. The owner can then more easily manage the dates of the maintenance visits, for example with a memory card reader station which signals the next due dates.
  • the present invention makes it possible in particular to take account of the history of the vehicle, when the latter is traveling or parked, so as to request the maintenance visit at times which correspond to probable failure states or significant probabilities.
  • an alarm signal resulting from the comparison is also produced when the current date is close to a calculated maintenance visit date.
  • the manufacturer determines the wear parameters of the vehicle components that he intends to submit to preventive management.
  • the initialization step is normally carried out only once when the vehicle is personalized. But as soon as there are significant changes on the vehicle (mounting of options, modification of a component, etc.), it must be executed again to update values and programs.
  • all of the values are loaded into a protected memory of the vehicle.
  • the operator has an access key, for example in the form of a procedure programmed in the software that implements the initialization step, which, when executed, requests the entry of a password , or with the help of a means of authorization such as a smart card. This procedure provides secure access to sensitive data for the manufacturer.
  • the operator sets the initial frequency of visits for each type of vehicle, and for each type of use.
  • the parameters and wear functions, and the methods of calculating the periodicities are maintained by the manufacturer or dealer of the vehicle model, and this, vehicle by vehicle.
  • the vehicle's on-board computer has a protected memory area which only the manufacturer or its authorized agents can access so as not to compromise the confidentiality of such data.
  • the necessary values are arranged in tables stored in memory addresses protected by a software access procedure and that a fuse in the addressing zones prevents addressing from the outside.
  • the access protection means are of the hardware or software type and are within the reach of those skilled in the art.
  • the vehicle includes an on-board computer, at least one section of which is reserved for implementing the method of the invention. It also includes wear sensors associated with each wear parameter for each component of the vehicle under preventive maintenance. Each sensor is connected by a suitable link (current loop, RS232, optical light, ...) to the on-board computer by a circuit, called interface, as is well known in the sensor technique.
  • the method consists in reading the current value of the wear parameters determined in particular as a function of the associated wear sensor , and transmits these values from the interfaces of the sensors to the operators of the central computer to execute the calculation of the consequent current value of the programmed wear functions.
  • the current values of the wear functions are then passed to a routine for comparison with wear thresholds which produce, if they are reached or exceeded, predetermined alarms.
  • FIG 3 there is shown the block diagram of an assembly implementing the method of the invention.
  • Such an assembly mainly comprises an on-board computer 1 on board a vehicle and a preventive maintenance diagnostic station 2 installed at the dealer or repairer, who performs the maintenance.
  • the on-board computer 1 and the preventive maintenance station 2 are connected by a connector 3 at two different times in the life of the vehicle.
  • the on-board computer 1 is loaded with predetermined values of wear function constants in the form of tables stored in permanent programmable memory and with wear functions in the form of a program.
  • the on-board computer 1 comprises a programmable memory 4 for recording the constants of the wear functions, a program memory 5 and a central unit 6 which manages the data exchanges and the specific processing of the invention. .
  • the solution of the invention consists in accumulating the events taken into account for the management of preventive maintenance.
  • a first wear sensor consists of a thickness sensor of the brake lining. Let p1 be the wear parameter associated with the thickness of the lining. One associates with the parameter p1 a threshold s1 such that if p1 becomes smaller than the threshold s1, one calculates from this moment, the distance D (p1, s1) traveled between the dates t-1 and t.
  • Hp a * D (p1, s1) (3) on date t.
  • the succession of instants for operating the method of the invention is determined according to a law recorded in the on-board computer.
  • this law is cyclic constant of given period I.
  • the successive instants of operation t and t-1 are therefore written nI and (n-1) I.
  • the sequencing of the operating step is caused by an internal clock 7 of the on-board computer. In this way, the gap time between t and t - 1 can be controlled depending on the vehicle or any other parameter.
  • the calculation takes place as soon as the operator is released by the previous calculation.
  • the on-board computer continues its task of managing preventive maintenance. It then includes a member for comparing the current value of the wear function F (t) with a threshold value Fseuil.
  • the comparison of the current value F (t) with the threshold value Fseuil is an economical means in terms of calculation and memory means for comparing the wear of each member in preventive maintenance with a reference wear.
  • the degree of wear of each member is associated with a period of operation before maintenance which is compared to a date of preventive maintenance. The wear function is then directly compared in terms of preventive maintenance dates.
  • the invention consists in that, during the initialization phase, functions have been loaded making it possible to produce equivalent wear distances for each member.
  • the possibly weighted accumulation of these equivalent distances makes it possible to compare overall wear with threshold wear for a preventive maintenance visit, thus making it possible to transform a check on the dates into a check on equivalent distances.
  • the distance equivalent traveled since the last intervention is defined as the sum over the types of use of the products of the distance equivalent meters by their respective weighting coefficient. To take account of the overall wear, we add to this value the distance of the trip actually made D0 affected by its own weighting coefficient K0.
  • Counter update processing is carried out when the vehicle is stopped. To protect the vehicle from repetitive starts, a blocking is carried out for a predetermined duration, for example, greater than 1 minute before allowing the counter update processing. In addition, the update is only performed if the information used by the model is tested as being valid.
  • the various thresholds are checked against the values of the aforementioned counters, to produce an alarm signaling all the necessary maintenance operations.
  • the maintenance computer asks the user, the manufacturer, or the maintenance mechanic, the validation of the operation to erase the wear counters, and the management of preventive maintenance. resumes its course.
  • a use matrix was first developed for each member making it possible to deduce the maintenance conditions as a function of the environment on the one hand, and of the style of use on the other hand .
  • the matrix is made up of five lines describing the environment and by four columns describing the style of use.
  • Each style and environment pair is associated with a distance counter, a duration counter, and a table of weighting coefficients.
  • the matrix shown at the top of FIG. 4 is associated with the member Oi under preventive maintenance. It is understood that there is a matrix associated with each of the organs Oi under preventive maintenance.
  • the access pointers to different counters represented in the tables described below are recorded: the pointers recorded in the Oi matrix are obtained from threshold values on the measurement values of the various parameters of speed, temperatures, flows (water, petrol, oil, etc.) and gearbox reports etc.
  • a distance counter D a duration counter T, and a weighting counter K are used for each member Oi.
  • the access pointers to these three counters are directly obtained by reading the matrix of the organ Oi, thanks to a reading-matrix circuit.
  • This read-matrix circuit determines the style-environment pair as a function of the conditions of use of the vehicle at the time when the operating step of the method of the invention is executed.
  • the read-matrix circuit accesses pointers i which allow access to the three aforementioned counters. Therefore, an accumulation circuit receives the values respectively Ai coming from the distance counter D, bi coming from the duration counter T and Ki coming from the weighting counter.
  • the accumulation circuit deduces the wear functions according to the above teachings.
  • the two counters distance D and duration T are replaced by a single counter equivalent to distance D.
  • the accumulation circuit receives only one parameter of equivalent distance di at the same time as the weighting coefficient Ki. Accumulation is performed as above.
  • the duration counter serves as a pointer to address the table of weighting coefficients during each change of state to allow the distance counter to be updated.
  • the wear function is then the sum of the different distance counters on all the style and environment pairs. Its instantaneous value is compared with a predetermined threshold to trigger the message requesting the maintenance action.
EP94118975A 1993-12-28 1994-12-02 Verfahren zur Fahrzeugspflegeverwaltung, Bordcomputer und dazugehörende diagnostische Station zur Durchführung dieses Verfahrens Withdrawn EP0661673A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9315758 1993-12-28
FR9315758A FR2714506B1 (fr) 1993-12-28 1993-12-28 Procédé de gestion de la maintenance d'un véhicule, ordinateur de bord et station de diagnostic associés mettant en Óoeuvre le procédé.

Publications (1)

Publication Number Publication Date
EP0661673A1 true EP0661673A1 (de) 1995-07-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP94118975A Withdrawn EP0661673A1 (de) 1993-12-28 1994-12-02 Verfahren zur Fahrzeugspflegeverwaltung, Bordcomputer und dazugehörende diagnostische Station zur Durchführung dieses Verfahrens

Country Status (2)

Country Link
EP (1) EP0661673A1 (de)
FR (1) FR2714506B1 (de)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0836975A2 (de) * 1996-10-17 1998-04-22 Denso Corporation Verfahren zur Feststellung eines Auswechselzeitpunktes und Fahrzeugregelvorrichtung, die in der Lage ist, einen Auswechselzeitpunkt eines Betätigungsorgans anzuzeigen
EP0863490A2 (de) * 1997-03-07 1998-09-09 Volkswagen Aktiengesellschaft Vorrichtung und Verfahren zur Berechnung und Anzeige von Service-Intervallen
FR2776256A1 (fr) * 1998-03-20 1999-09-24 Bosch Gmbh Robert Dispositif de retraitement de donnees pour vehicule a moteur
WO2001061653A1 (de) * 2000-02-17 2001-08-23 Robert Bosch Gmbh Verfahren und vorrichtung zur ermittlung der verbleibenden betriebsdauer eines produktes
WO2002102627A1 (de) * 2001-06-19 2002-12-27 Daimlerchrysler Ag Verfahren zur festlegung von zeitpunkt und umfang von wartungsvorgängen
WO2005029206A1 (de) 2003-09-17 2005-03-31 Framatome Anp Gmbh Verfahren zur automatischen ableitung von instandhaltungsempfehlungen
WO2009027255A2 (en) * 2007-08-24 2009-03-05 Siemens Aktiengesellschaft A method and system that are used to determine the service life endpoint and evaluate the current historical service life
WO2010037596A1 (de) * 2008-09-30 2010-04-08 Continental Automotive Gmbh Verfahren und vorrichtung zur verschleissdiagnose eines kraftfahrzeugs
FR2996192A1 (fr) * 2012-10-02 2014-04-04 Eurodrive Services And Distrib N V Procede de determination de l'etat d'usure d'une piece et d'information d'un client
FR3092057A1 (fr) * 2019-01-30 2020-07-31 Continental Automotive Gmbh Procédés et dispositifs de maintenance prédictive de composants d’un véhicule routier
WO2022012837A1 (fr) * 2020-07-15 2022-01-20 Vitesco Technologies GmbH Procede et systeme de maintenance predictive
CN116691282A (zh) * 2023-08-01 2023-09-05 江苏日盈电子股份有限公司 一种基于互联网的汽车车载空调运行控制系统

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0062868A1 (de) * 1981-04-10 1982-10-20 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Service-Intervall-Anzeigevorrichtung für Kraftmaschinen
WO1989006839A1 (en) * 1988-01-15 1989-07-27 Micro Processor Systems, Inc. Interchangeable diagnostic instrument system
EP0332769A1 (de) * 1986-04-15 1989-09-20 William Wrigge Vorrichtung zum Überwachen von Kraftfahrzeug-Wartungsintervallen
GB2217029A (en) * 1988-03-29 1989-10-18 Fuji Heavy Ind Ltd Diagnostic system for a motor vehicle
DE4038972C1 (de) * 1990-12-06 1991-11-07 Man Nutzfahrzeuge Ag, 8000 Muenchen, De

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0062868A1 (de) * 1981-04-10 1982-10-20 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Service-Intervall-Anzeigevorrichtung für Kraftmaschinen
EP0332769A1 (de) * 1986-04-15 1989-09-20 William Wrigge Vorrichtung zum Überwachen von Kraftfahrzeug-Wartungsintervallen
WO1989006839A1 (en) * 1988-01-15 1989-07-27 Micro Processor Systems, Inc. Interchangeable diagnostic instrument system
GB2217029A (en) * 1988-03-29 1989-10-18 Fuji Heavy Ind Ltd Diagnostic system for a motor vehicle
DE4038972C1 (de) * 1990-12-06 1991-11-07 Man Nutzfahrzeuge Ag, 8000 Muenchen, De

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0836975A2 (de) * 1996-10-17 1998-04-22 Denso Corporation Verfahren zur Feststellung eines Auswechselzeitpunktes und Fahrzeugregelvorrichtung, die in der Lage ist, einen Auswechselzeitpunkt eines Betätigungsorgans anzuzeigen
EP0836975A3 (de) * 1996-10-17 1999-12-01 Denso Corporation Verfahren zur Feststellung eines Auswechselzeitpunktes und Fahrzeugregelvorrichtung, die in der Lage ist, einen Auswechselzeitpunkt eines Betätigungsorgans anzuzeigen
EP0863490A2 (de) * 1997-03-07 1998-09-09 Volkswagen Aktiengesellschaft Vorrichtung und Verfahren zur Berechnung und Anzeige von Service-Intervallen
EP0863490A3 (de) * 1997-03-07 2000-03-08 Volkswagen Aktiengesellschaft Vorrichtung und Verfahren zur Berechnung und Anzeige von Service-Intervallen
FR2776256A1 (fr) * 1998-03-20 1999-09-24 Bosch Gmbh Robert Dispositif de retraitement de donnees pour vehicule a moteur
WO2001061653A1 (de) * 2000-02-17 2001-08-23 Robert Bosch Gmbh Verfahren und vorrichtung zur ermittlung der verbleibenden betriebsdauer eines produktes
US7076396B2 (en) 2000-02-17 2006-07-11 Robert Bosch Gmbh Method and device for determining the remaining serviceable life of a product
CN1313983C (zh) * 2000-02-17 2007-05-02 罗伯特-博希股份公司 用于确定产品剩余使用寿命的方法和装置
WO2002102627A1 (de) * 2001-06-19 2002-12-27 Daimlerchrysler Ag Verfahren zur festlegung von zeitpunkt und umfang von wartungsvorgängen
US7286916B2 (en) 2001-06-19 2007-10-23 Daimlerchrysler Ag Method for determining the time and extent of maintenance operations
WO2005029206A1 (de) 2003-09-17 2005-03-31 Framatome Anp Gmbh Verfahren zur automatischen ableitung von instandhaltungsempfehlungen
WO2009027255A3 (en) * 2007-08-24 2009-11-05 Siemens Aktiengesellschaft A method and system that are used to determine the service life endpoint and evaluate the current historical service life
CN101373495B (zh) * 2007-08-24 2010-09-29 西门子公司 使用寿命终点判定及当前历史使用寿命估计的方法和系统
WO2009027255A2 (en) * 2007-08-24 2009-03-05 Siemens Aktiengesellschaft A method and system that are used to determine the service life endpoint and evaluate the current historical service life
US8970359B2 (en) 2008-09-30 2015-03-03 Continental Automotive Gmbh Method and device for wear diagnosis of a motor vehicle
WO2010037596A1 (de) * 2008-09-30 2010-04-08 Continental Automotive Gmbh Verfahren und vorrichtung zur verschleissdiagnose eines kraftfahrzeugs
US9858730B2 (en) 2012-10-02 2018-01-02 Eurodrive Services And Distribution N.V. Method for determining the state of wear of a part and for informing a client
WO2014053457A1 (fr) * 2012-10-02 2014-04-10 Eurodrive Services And Distribution N.V. Procédé de détermination de l'état d'usure d'une pièce et d'information d'un client
FR2996192A1 (fr) * 2012-10-02 2014-04-04 Eurodrive Services And Distrib N V Procede de determination de l'etat d'usure d'une piece et d'information d'un client
FR3092057A1 (fr) * 2019-01-30 2020-07-31 Continental Automotive Gmbh Procédés et dispositifs de maintenance prédictive de composants d’un véhicule routier
WO2020157172A1 (fr) 2019-01-30 2020-08-06 Continental Automotive Gmbh Procédés et dispositifs de maintenance prédictive de composants d'un véhicule routier
CN113454554A (zh) * 2019-01-30 2021-09-28 纬湃科技有限责任公司 对道路车辆的部件进行预测性维护的方法和装置
WO2022012837A1 (fr) * 2020-07-15 2022-01-20 Vitesco Technologies GmbH Procede et systeme de maintenance predictive
FR3112622A1 (fr) * 2020-07-15 2022-01-21 Vitesco Technologies Procédé et système de maintenance prédictive
CN116691282A (zh) * 2023-08-01 2023-09-05 江苏日盈电子股份有限公司 一种基于互联网的汽车车载空调运行控制系统
CN116691282B (zh) * 2023-08-01 2023-12-08 江苏日盈电子股份有限公司 一种基于互联网的汽车车载空调运行控制系统

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Publication number Publication date
FR2714506B1 (fr) 1996-02-09
FR2714506A1 (fr) 1995-06-30

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