EP3257027A1 - Method and system for performing secure remote diagnostics of networked electronic devices of vehicles - Google Patents

Method and system for performing secure remote diagnostics of networked electronic devices of vehicles

Info

Publication number
EP3257027A1
EP3257027A1 EP16707866.6A EP16707866A EP3257027A1 EP 3257027 A1 EP3257027 A1 EP 3257027A1 EP 16707866 A EP16707866 A EP 16707866A EP 3257027 A1 EP3257027 A1 EP 3257027A1
Authority
EP
European Patent Office
Prior art keywords
remote
request
eej
electronic equipment
diagnostic
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.)
Granted
Application number
EP16707866.6A
Other languages
German (de)
French (fr)
Other versions
EP3257027B1 (en
Inventor
Pacome MAYOUMA
Thierry Lopez
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.)
PSA Automobiles SA
Original Assignee
PSA Automobiles SA
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 PSA Automobiles SA filed Critical PSA Automobiles SA
Publication of EP3257027A1 publication Critical patent/EP3257027A1/en
Application granted granted Critical
Publication of EP3257027B1 publication Critical patent/EP3257027B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • G07C5/0808—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
    • G07C5/008—Registering or indicating the working of vehicles communicating information to a remotely located station
    • 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

Definitions

  • the invention relates to the remote realization of diagnostics vehicles, possibly automotive type.
  • Many vehicles include communicating electronic equipment (such as computers) that are coupled to a supervisory equipment (sometimes called an "intelligent service enclosure” (or BSI)), which is itself coupled to a communication module via a communication channel. wave.
  • BSI supervisory equipment
  • the latter is arranged to serve as a communication interface between a diagnostic tool, coupled to a communication network, and communicating electronic equipment of his vehicle, so that remote diagnosis of the latter can be performed by a technician controlling the diagnostic tool.
  • remote diagnostics may be intended to remotely determine the origin of a fault or malfunction within a vehicle, at the request of the driver, then to provide advice when a single driver intervention is possible, or good if a revision or a maintenance operation of the vehicle must be proposed to the driver, possibly accompanied by proposals for dates of intervention.
  • a secure remote diagnostic mechanism To prevent any diagnosis can be made remotely on a communicating electronic equipment, it has been proposed a secure remote diagnostic mechanism.
  • the latter consists in adding to the diagnostic request a value of teleservice parameter, then to check with the communicating electronic equipment to diagnose if it recognizes this value and therefore if it supports remote diagnostics. If so, it is verified in a list, associated with the communicating electronic equipment to be diagnosed, if the diagnostic request received is part of it, and if so, this diagnostic request is transmitted to this communicating electronic equipment so that he provides an answer intended for the diagnostic tool.
  • the communicating electronic equipment to be diagnosed does not support remote diagnosis, for example because it is old, or when the diagnostic request received is not part of the list of authorized diagnostics of the communicating electronic equipment to be diagnosed, a message indicating that a condition is not satisfied is transmitted to the diagnostic tool and therefore the diagnostic request is not transmitted to this communicating electronic equipment. Consequently, it is impossible to perform a remote diagnosis of communicating electronic equipment that does not support such remote diagnostics, even if it can be diagnosed by means of a diagnostic tool that is locally coupled to the supervision equipment (BSI) of his vehicle.
  • BBI supervision equipment
  • the invention is therefore particularly intended to improve the situation.
  • this value is compared to a predefined value, and if there is an identity between them, a request for a remote diagnostic session is transmitted to the electronic equipment; communicating recipient,
  • a third step in which the latter generates a response to the request, and if this response is an acceptance of the remote diagnosis session or a predefined refusal of the remote diagnosis session, the remote diagnosis request is transmitted to the communicating electronic equipment, and
  • a fourth step in which a message generated by the communicating electronic equipment in response to the remote diagnosis request is transmitted to the diagnostic tool.
  • the method according to the invention may comprise other characteristics that can be taken separately or in combination, and in particular:
  • the comparison can be made in a communication server which provides a communication interface between the diagnostic tool and the communication module of the diagnosed vehicle.
  • the server communication device can transmit the remote diagnosis request to the communicating electronic equipment, via the communication module;
  • the comparison can be made in the communication module of the vehicle which comprises the communicating electronic equipment to which the remote diagnosis request is addressed.
  • the response generated by the communicating electronic equipment can be analyzed in this communication module, and if this response is an acceptance of the remote diagnosis session or a predefined refusal of the remote diagnosis session, the module communication can transmit the remote diagnostic request to communicating electronic equipment;
  • the answer to the request for a remote diagnosis session is an acceptance of the remote diagnosis session, it is possible to first address to the communicating electronic equipment, the recipient of the remote diagnosis request, a logoff message; remote diagnosis, then in case of receipt of a closing confirmation message of this remote diagnostic session, it is possible to transmit to the diagnostic tool the message generated by the communicating electronic equipment in response to the remote diagnosis request, accompanied by a predefined value of the remote diagnosis parameter;
  • the message generated by the communicating electronic equipment can be transmitted to the diagnostic tool in response to the request of remote diagnosis, accompanied by a predefined value of the remote diagnosis parameter;
  • the second step in case of identity between the received value and the predefined value, it is possible to first check whether the remote diagnosis request is authorized for the communicating electronic equipment, and if so, the transmission can be transmitted. remote diagnostic session request to the communicating electronic equipment.
  • the invention also proposes a system for remotely performing vehicle diagnostics each comprising a communication module adapted to communicate by waves and coupled to on-board communicating electronic equipment.
  • a diagnostic tool capable of generating a remote diagnosis request associated with a value of a remote diagnostic parameter intended for a communicating electronic equipment of a vehicle
  • processing means arranged to compare this value with a predefined value, and in case of identity between them to trigger the transmission of a request for a remote diagnosis session intended for this communicating electronic equipment, then, in case of reception, a response to this request generated by the latter and representative a predefined acceptance or refusal of said remote diagnosis session, to trigger the transmission of the remote diagnosis request to the communicating electronic equipment, so that the latter generates a response message to the diagnostic remote diagnosis request to the diagnostic tool; .
  • the system according to the invention may comprise other characteristics that can be taken separately or in combination, and in particular:
  • its processing means can be installed in a communication server which provides a communication interface between the diagnostic tool and the communication module of the diagnosed vehicle;
  • its processing means can be installed in the communication module of the vehicle comprising the communicating electronic equipment to which the remote diagnosis request is addressed;
  • its processing means can be arranged, in the event of identity between the received value and the predefined value, to first check whether the remote diagnostic request is authorized for the communicating electronic equipment to which it is addressed, then, if so, for trigger the transmission of the request for a remote diagnostic session to this communicating electronic equipment.
  • FIG. 1 schematically and functionally illustrates a communication installation to which is coupled an exemplary embodiment of a system for carrying out remote diagnostics of vehicles according to the invention
  • FIG. 2 schematically illustrates an example of an algorithm implementing an exemplary embodiment of a method for performing remote diagnostics according to the invention.
  • the object of the invention is in particular to propose a method for performing remote diagnostics, and a system for carrying out remote diagnostics.
  • Associated SD intended to allow the realization of remote diagnostics of vehicles V comprising communicating electronic equipment EEj and a communication module MC able to communicate by waves with a communication network RC.
  • the vehicles V which can be the subject of remote diagnostics are of the automotive type. This is for example cars. But the invention is not limited to this type of vehicle. It concerns any type of land vehicle, maritime (or fluvial) or air, as it includes communicating electronic equipment that can be diagnosed (s) and coupled to a communication module that can communicate by way of waves with a communication network.
  • FIG. 1 shows schematically an example of a communication installation to which is coupled an exemplary embodiment of an SD system for remote diagnostics of vehicles V.
  • the communication installation comprises in particular an RC communication network comprising, on the one hand, a non-wired communication infrastructure to which communication modules MC located in vehicles V can be connected, and, on the other hand, an infrastructure wired communication device to which wired communication equipment can be connected, such as an SC server and an OD diagnostic tool.
  • an SC communication network comprising, on the one hand, a non-wired communication infrastructure to which communication modules MC located in vehicles V can be connected, and, on the other hand, an infrastructure wired communication device to which wired communication equipment can be connected, such as an SC server and an OD diagnostic tool.
  • the wireless communication modules MC and wired communication equipment SC and OD could be connected to different communication networks interconnected to each other, preferably via the Internet.
  • Each vehicle V that can be diagnosed comprises at least communicating electronic equipment EEj and a communication module MC coupled together.
  • the communicating electronic equipment EEj are connected to at least one onboard communication network RCE, possibly of the multiplexed type.
  • communicating electronic equipment means equipment capable of receiving and processing data frames.
  • digital network circulating on the bus of an RCE on-board communication network to which it is connected, and to provide the latter (RCE) data frames for at least one other communicating electronic equipment. It may, for example, be a calculator, a sensor or an actuator.
  • the vehicle V also comprises a supervision equipment ES connected to the on-board communication network RCE and to the communication module MC.
  • This ES supervision equipment is a communicating electronic equipment which is responsible in particular for interfacing between the communication module MC and the other communicating electronic equipment EEj and controlling diagnostic functions. This is for example what the skilled person sometimes calls an "intelligent servitude case" (or BSI).
  • each vehicle V is associated with a vehicle identifier.
  • the latter may, for example, be that which is called in English "Vehicle Identification Number" (or VIN).
  • a remote diagnosis system SD comprises at least MT processing means and a diagnostic tool OD.
  • the diagnostic tool OD is designed to perform remotely, possibly at the request of the communication module MC of a vehicle V or wireless communication equipment used by a passenger of the vehicle V, a remote diagnosis of the latter ( V), according to its vehicle identifier.
  • This OD diagnostic tool is, for example, a fixed or portable computer connected to the RC communication network and used by a teleoperator or a repair technician able to control a remote diagnosis and make proposals once the latter is finished. Moreover, this diagnostic tool OD can, for example, belong to an after-sales service of a vehicle manufacturer (here a car manufacturer).
  • the OD diagnostic tool includes software modules (or "software") together constituting a program similar to that which is implemented in a diagnostic tool used by the technicians of a garage (or a concession), as per example that is called DiagBox® and used to diagnose problems in Peugeot and Citro ⁇ n vehicles.
  • the diagnostic tool OD may comprise first storage means MS1 in which are stored all the diagnostics that can be performed remotely for at least some of the vehicle models of at least one brand, which are identified by their identifier of vehicle.
  • first storage means MS1 can be in any form known to those skilled in the art, and especially in the form of a memory or a database.
  • Each communication module MC is in particular able to communicate with an OD diagnostic tool to request the realization of a remote diagnosis of its vehicle V and to transmit to it the vehicle identifier of this vehicle V. It comprises electronic circuits (or " hardware ”) and software modules (or” software "). Furthermore, it also serves as a gateway between the diagnostic tool OD and the communicating electronic equipment EEj of its vehicle V, via (here) their ES supervision equipment, so that they exchange diagnostic queries and response messages to these diagnostic queries.
  • a request for remote diagnostics is a message comprising in particular a diagnostic identifier to be produced and a communicating electronic equipment identifier EEj to be diagnosed.
  • this exchange of requests and response messages is intended to enable the diagnostic tool OD which communicates temporarily with a vehicle V, via its communication module MC, to carry out a remote diagnosis (or remote diagnosis), then to transmit a diagnostic result to this vehicle V.
  • the communication module MC is responsible for managing all aspects of the encapsulation. In this case, it (MC) is responsible for de-encapsulating the encapsulated frames in TCP / IP to recover the only CAN frames in order to transmit them to their recipient (s). Similarly, it (MC) is responsible for encapsulating the CAN frames comprising the TCP / IP response messages so that they can be transmitted to the diagnostic tool OD.
  • the communication module MC may, for example, be of 3G or 4G type so as to be accessible directly by its IP address (private and contractually provided by an operator, or public and re-routed temporarily by an operator to an address as part of a communication session and therefore considered private only during the duration of this communication session).
  • the communication module MC When it is the vehicle V that requests a remote diagnosis, possibly at the request of the driver, his communication module MC initiates a data communication (and possibly voice) with the diagnostic tool OD, possibly via a communication server SC .
  • the possible voice (or telephone) communication is intended to allow the teleoperator or repairer who uses the OD diagnostic tool to communicate by telephone with a passenger of the vehicle V.
  • the data communication (or "data") is established, for example under IP ("Internet Protocol").
  • IP Internet Protocol
  • the eventual communication server SC may belong to the after-sales service of the manufacturer of vehicles (here a car manufacturer). It can also be part of the system for performing SD remote diagnostics. As indicated above, the invention proposes a method for performing remote diagnostics that can be implemented by means of an SD remote diagnosis system. Such a method comprises at least four steps.
  • a first step of the method according to the invention is initiated when a remote diagnosis has been required or decided for a vehicle V.
  • the diagnostic tool OD In this first step, the diagnostic tool OD generates a remote diagnosis request associated with a value Vpd (or "flag") of a remote diagnostic parameter for a communicating electronic equipment EEj of a vehicle V.
  • the value v pd is compared with a predefined value v1, and if there is an identity between them (v pd and v1) a request for a remote diagnostic session is transmitted to the communicating electronic equipment EEj which is the recipient of the remote diagnosis request.
  • This transmission is done via the possible SC communication server, the RC communication network, the MC communication module and any ES supervision equipment and RCE on-board communication network.
  • the predefined value v1 may, for example, be coded on at least one bit. For example, it can be equal to one (1). But it could be coded differently (for example on several bits).
  • the comparison of values (v pd and v1) is intended to secure the remote diagnosis phase. Indeed, if the values Vpd and v1 are not identical, (the processing means MT of the remote diagnosis system SD) address (s) to the diagnostic tool OD a message indicating that a condition is not satisfied, and thus the request for remote diagnosis is not transmitted to communicating electronic equipment EEj who is the recipient.
  • the communication module MC of the vehicle V which comprises the communicating electronic equipment EEj which is the recipient the remote diagnostic request.
  • the communication module MC must be equipped with the processing means MT of the remote diagnostic system SD, because they are in particular responsible for performing the comparisons of values (v pd and v1).
  • the processing means MT may be arranged in the form of electronic circuits and / or software modules.
  • the comparison of values ( ⁇ 1 and v 1) can be performed in the communication server SC which provides the communication interface between the diagnostic tool OD and the communication module MC of the vehicle V diagnostic.
  • the communication server SC must be equipped with the aforementioned processing means MT of the remote diagnostic system SD. This variant avoids increasing the number of tasks to be performed by each communication module MC, but it significantly increases the time of obtaining the information, or may induce the software shutdown of a remote diagnostic phase when the communication server SC is overloaded and / or the congested RC communication network.
  • the identity between the value v pd and the predefined value v1 is identical, it can first be checked whether the remote diagnosis request is authorized for the communicating electronic equipment EEj . This verification is carried out by the processing means MT with second storage means MS2 which store diagnostic identifiers in correspondence of identifiers of communicating electronic equipment EEj.
  • the second storage means MS2 may be located in the equipment (here the communication module MC) which comprises the processing means MT. But this is not obligatory. Indeed, they could be deported, for example in ES supervision equipment or in the communication server SC. In the latter case (totally remote), the second storage means MS2 must store diagnostic identifiers in correspondence of communicating electronic equipment identifiers EEj and vehicle identifiers. These second storage means MS2 may be in any form known to those skilled in the art, and in particular in the form of a memory or a database.
  • the remote diagnostic session request is transmitted to the communicating electronic equipment EEj if the remote diagnosis request is authorized for the latter (EEj).
  • the communicating electronic equipment EEj diagnosed generates a response to the request for a remote diagnosis session that it received at the end of the second step if the values v pd and v1 were identical. Then, if this answer is an acceptance of the remote diagnosis session or a predefined refusal of this remote diagnosis session, the remote diagnostic request is transmitted to the diagnosed electronic communicating equipment EEj.
  • the term "acceptance of the remote diagnosis session” means an acceptance to participate in the remote diagnosis session required by the OD diagnostic tool. Such acceptance is automatically decided by communicating electronic equipment EEj of recent manufacture, and therefore that has been arranged to recognize and accept a request for remote diagnostic session in order to be subject to remote diagnostics.
  • predefined refusal denotes the refusal to participate in the remote diagnosis session required by the diagnostic tool OD, and having a predefined "value” (for example "NACK 12" which is a normative value in response to a non-predefined request).
  • a refusal is automatically decided by a communicating electronic equipment EEj of old manufacture, and therefore that can not be the object of remote diagnostics because it has not been arranged to recognize a request for remote diagnostic session.
  • the analysis of the response to the request for a remote diagnosis session, generated by the communicating electronic equipment EEj diagnosed, is performed by the processing means MT. Therefore it can be carried out either in the communication module MC (as illustrated not only in FIG. 1), or in the communication server SC.
  • the processing means MT analyze the response generated by the communicating electronic equipment EEj. Then, if this answer is a predefined acceptance or refusal of the remote diagnosis session, they trigger the transmission by the communication module MC of the remote diagnosis request received in the first step to this communicating electronic equipment EEj.
  • the processing means MT analyze the response generated by the communicating electronic equipment EEj. Then, if this answer is a predefined acceptance or refusal of the remote diagnosis session, they trigger the transmission by the communication server SC of the remote diagnosis request received in the first step to this communicating electronic equipment EEj, via the communication network.
  • a message is transmitted to the diagnostic tool OD which has been generated by the communicating electronic equipment EEj diagnosed in response to the remote diagnosis request transmitted during the third step.
  • This transmission is provided by the communication module MC, and is done via the communication network RC and the eventual communication server SC.
  • the OD diagnostic tool is transmitted to the diagnostic tool.
  • message that has been generated by the communicating electronic equipment EEj in response to the remote diagnosis request accompanied by a predefined value of the remote diagnostic parameter. This value is for example the same as that referenced v pd which was transmitted during the first step.
  • the transmission of this response message to the remote diagnosis request is triggered by the processing means MT. Therefore it can be carried out either in the communication module MC (as illustrated not only in FIG. 1), or in the communication server SC.
  • the response to the remote diagnostic session request is a predefined refusal of this remote diagnostic session, there is no remote diagnostic session to close. Consequently, as soon as the message generated by the communicating electronic equipment EEj is received in response to the remote diagnostic request, it can be transmitted to the diagnostic tool OD accompanied by a predefined value of the remote diagnostic parameter. This value is for example the same as that referenced v pd which was transmitted during the first step.
  • the transmission of this response message to the remote diagnosis request is triggered by the processing means MT. Therefore it can be carried out either in the communication module MC (as illustrated not only in FIG. 1), or in the communication server SC.
  • FIG. 2 schematically illustrates an example of an algorithm implementing an exemplary embodiment of a method for performing remote diagnostics according to the invention. This example corresponds to the case where the processing means MT of the remote diagnosis system SD are located in the communication module MC of the vehicle V diagnosed.
  • the diagnostic tool OD In a sub-step 10, the diagnostic tool OD generates a remote diagnostic request associated with a value Vpd of a remote diagnosis parameter, and then transmits it to a communicating electronic equipment EEj chosen from the vehicle V.
  • the first step of the process according to the invention corresponds to this sub-step 10.
  • the processing means MT performs (s) a test to compare the value Vpd to a predefined value v1.
  • a sub-step 30 is carried out in which the processing means MT transmits to the diagnostic tool OD a response message indicating that a condition is not present. satisfied, and thus the request for remote diagnosis is not transmitted to communicating electronic equipment EEj who is the recipient.
  • the (the processing means MT) performs (s) a sub-step 40 of verification. More specifically, one (the processing means MT) verifies (s) from the second storage means MS2 if the remote diagnostic request is authorized for the communicating electronic equipment EEj which is the recipient.
  • the processing means (MT) perform the sub-step 30, in order to transmit to the diagnostic tool OD a response message indicating that a condition is not satisfied, and therefore the remote diagnostic request is not transmitted to communicating electronic equipment EEj who is the recipient.
  • a substep 50 is carried out in which the processing means MT trigger the transmission of a request for a remote diagnostic session to the communicating electronic equipment EEj which is the addressee of the remote diagnosis request.
  • the second step of the process according to the invention corresponds to substeps 20, 40 and 50.
  • the communicating electronic equipment EEj diagnosed generates and transmits a response to the remote diagnostic session request it has received.
  • a substep 70 the processing means MT analyzes (s) the response to the remote diagnostic session request transmitted by the communicating electronic equipment EEj.
  • the (the processing means MT) (do) substep 30 in order to transmit to the diagnostic tool OD a response message indicating that a condition is not satisfied, and therefore the remote diagnostic request is not transmitted to communicating electronic equipment EEj who is the recipient.
  • a substep 80 is carried out.
  • the processing means MT transmits (tent) the remote diagnostic request, received in the sub-step 10, the communicating electronic equipment EEj diagnosed. Then, the communicating electronic equipment EEj diagnosed generates and transmits a response to the remote diagnostic request that it has received.
  • the third step of the process according to the invention corresponds to substeps 60 to 80.
  • a sub-step 90 is performed.
  • the processing means MT transmits (to) the diagnostic tool OD the message, which has been generated by the communicating electronic equipment EEj diagnosed in response to the remote diagnosis request, accompanied by a predefined value of the remote diagnostic parameter.
  • a substep 100 is carried out.
  • the (MT processing means) transmits (tent) to the communicating electronic equipment EEj, who is the recipient of the remote diagnosis request, a remote diagnosis logout message, so that he knows that his remote diagnosis is complete.
  • the (MT processing means) transmits (tent) to the diagnostic tool OD the message, which has been generated by the equipment electronic communicating EEj diagnosed in response to the request for remote diagnosis, accompanied by a predefined value the remote diagnostic parameter.
  • the fourth step of the method according to the invention corresponds to substeps 90 and 100.
  • the invention makes it possible to significantly increase the number of old communicating electronic equipment that can be the subject of remote diagnosis without this requiring their modification.

Abstract

The invention relates to a system (SD) for performing remote diagnostics of vehicles (V) comprising networked electronic devices (EE1-EE4). Said system (SD) comprises a diagnostic tool (OD) capable of sending a remote-diagnostics request associated with a value of a remote-diagnostics parameter to a networked electronic device (EE1) of a vehicle (V), and processing means (MT) arranged to compare said value to a predefined value, and, in the event that these values are identical, to trigger the sending of a remote-diagnostics session request to said networked electronic device (EE1), then, in the event of receipt of a reply to this request sent by the latter (EE1) and representing predefined acceptance or refusal of the remote-diagnostics session, to trigger the sending of the remote-diagnostics request to the networked electronic device (EE1) such that said device may send to the diagnostic tool (OD) a message in response to the remote-diagnostics request.

Description

PROCÉDÉ ET SYSTÈME DE RÉALISATION DE TÉLÉDIAGNOSTICS SÉCURISÉS D'ÉQUIPEMENTS ÉLECTRONIQUES COMMUNICANTS DE VÉHICULES  METHOD AND SYSTEM FOR REALIZING SECURE TELEDIAGNOSTICS OF ELECTRONIC EQUIPMENT COMMUNICATING VEHICLES
L'invention concerne la réalisation à distance de diagnostics de véhicules, éventuellement de type automobile. The invention relates to the remote realization of diagnostics vehicles, possibly automotive type.
De nombreux véhicules comportent des équipements électroniques communicants (comme par exemple des calculateurs) qui sont couplés à un équipement de supervision (parfois appelé « boîtier de servitude intelligent » (ou BSI)), lui-même couplé à un module de communication par voie d'ondes. Ce dernier est agencé de manière à servir d'interface de communication entre un outil de diagnostic, couplé à un réseau de communication, et des équipements électroniques communicants de son véhicule, afin que des télédiagnostics de ces derniers puissent être réalisés par un technicien contrôlant l'outil de diagnostic.  Many vehicles include communicating electronic equipment (such as computers) that are coupled to a supervisory equipment (sometimes called an "intelligent service enclosure" (or BSI)), which is itself coupled to a communication module via a communication channel. wave. The latter is arranged to serve as a communication interface between a diagnostic tool, coupled to a communication network, and communicating electronic equipment of his vehicle, so that remote diagnosis of the latter can be performed by a technician controlling the diagnostic tool.
Ces télédiagnostics peuvent être destinés à déterminer à distance l'origine d'une panne ou d'un dysfonctionnement au sein d'un véhicule, à la demande du conducteur, puis à fournir des conseils lorsqu'une intervention du seul conducteur est possible, ou bien si une révision ou une opération de maintenance du véhicule doit être proposée au conducteur, éventuellement accompagnée de propositions de dates d'intervention.  These remote diagnostics may be intended to remotely determine the origin of a fault or malfunction within a vehicle, at the request of the driver, then to provide advice when a single driver intervention is possible, or good if a revision or a maintenance operation of the vehicle must be proposed to the driver, possibly accompanied by proposals for dates of intervention.
Pour éviter que n'importe quel diagnostic puisse être réalisé à distance sur un équipement électronique communicant, il a été proposé un mécanisme de télédiagnostic sécurisé. Ce dernier consiste à adjoindre à la requête de diagnostic une valeur de paramètre de téléservice, puis à vérifier auprès de l'équipement électronique communicant à diagnostiquer si il reconnaît cette valeur et donc si il supporte le télédiagnostic. Dans l'affirmative, on vérifie dans une liste, associée à l'équipement électronique communicant à diagnostiquer, si la requête de diagnostic reçue en fait partie, et dans l'affirmative, on transmet cette requête de diagnostic à cet équipement électronique communicant afin qu'il fournisse une réponse destinée à l'outil de diagnostic. To prevent any diagnosis can be made remotely on a communicating electronic equipment, it has been proposed a secure remote diagnostic mechanism. The latter consists in adding to the diagnostic request a value of teleservice parameter, then to check with the communicating electronic equipment to diagnose if it recognizes this value and therefore if it supports remote diagnostics. If so, it is verified in a list, associated with the communicating electronic equipment to be diagnosed, if the diagnostic request received is part of it, and if so, this diagnostic request is transmitted to this communicating electronic equipment so that he provides an answer intended for the diagnostic tool.
Lorsque l'équipement électronique communicant à diagnostiquer ne supporte pas le télédiagnostic, par exemple du fait qu'il est ancien, ou lorsque la requête de diagnostic reçue ne fait pas partie de la liste de diagnostics autorisés de l'équipement électronique communicant à diagnostiquer, un message signalant qu'une condition n'est pas satisfaite est transmis à l'outil de diagnostic et donc la requête de diagnostic n'est pas transmise à cet équipement électronique communicant. Par conséquent, il est impossible de réaliser un télédiagnostic d'un équipement électronique communicant qui ne supporte pas un tel télédiagnostic, même si ce dernier peut faire l'objet d'un diagnostic au moyen d'un outil de diagnostic qui est couplé localement à l'équipement de supervision (BSI) de son véhicule.  When the communicating electronic equipment to be diagnosed does not support remote diagnosis, for example because it is old, or when the diagnostic request received is not part of the list of authorized diagnostics of the communicating electronic equipment to be diagnosed, a message indicating that a condition is not satisfied is transmitted to the diagnostic tool and therefore the diagnostic request is not transmitted to this communicating electronic equipment. Consequently, it is impossible to perform a remote diagnosis of communicating electronic equipment that does not support such remote diagnostics, even if it can be diagnosed by means of a diagnostic tool that is locally coupled to the supervision equipment (BSI) of his vehicle.
Il en résulte que dès qu'un véhicule comprend au moins un équipement électronique communicant qui ne supporte pas un télédiagnostic, certains diagnostics ne peuvent pas être réalisés, ce qui peut s'avérer dangereux. Cela résulte en effet du fait que la réalisation de certains diagnostics nécessite la réalisation préalable d'autres diagnostics. A titre d'exemple illustratif, avant de réaliser un diagnostic de fonctionnement des injecteurs d'un moteur thermique, il faut préalablement savoir si il n'y a pas une fuite de carburant.  As a result, as soon as a vehicle comprises at least one communicating electronic equipment that does not support remote diagnostics, certain diagnoses can not be made, which can be dangerous. This in fact results from the fact that the realization of certain diagnoses requires the prior completion of other diagnoses. As an illustrative example, before performing a diagnosis of the operation of the injectors of a heat engine, it is necessary to know beforehand if there is no fuel leak.
L'invention a donc notamment pour but d'améliorer la situation.  The invention is therefore particularly intended to improve the situation.
Elle propose notamment à cet effet un procédé destiné à permettre la réalisation à distance de diagnostics de véhicules comprenant chacun un module de communication propre à communiquer (par voie d'ondes) avec un outil de diagnostic distant et couplé à des équipements électroniques communicants embarqués.  It proposes for this purpose a method for enabling the remote realization of vehicle diagnostics each comprising a communication module adapted to communicate (by wave) with a remote diagnostic tool and coupled to embedded electronic communicating equipment.
Ce système se caractérise par le fait qu'il comprend :  This system is characterized by the fact that it includes:
- une première étape dans laquelle l'outil de diagnostic génère une requête de télédiagnostic associée à une valeur d'un paramètre de télédiagnostic à destination d'un équipement électronique communicant d'un véhicule, a first step in which the diagnostic tool generates a remote diagnosis request associated with a value of a remote diagnosis parameter intended for a communicating electronic equipment of a vehicle,
- une deuxième étape dans laquelle on compare cette valeur à une valeur prédéfinie, et en cas d'identité entre ces dernières on transmet une demande de session de télédiagnostic à l'équipement électronique communicant destinataire, a second step in which this value is compared to a predefined value, and if there is an identity between them, a request for a remote diagnostic session is transmitted to the electronic equipment; communicating recipient,
- une troisième étape dans laquelle ce dernier génère une réponse à la demande, puis si cette réponse est une acceptation de la session de télédiagnostic ou un refus prédéfini de la session de télédiagnostic, on transmet la requête de télédiagnostic à l'équipement électronique communicant, et  a third step in which the latter generates a response to the request, and if this response is an acceptance of the remote diagnosis session or a predefined refusal of the remote diagnosis session, the remote diagnosis request is transmitted to the communicating electronic equipment, and
- une quatrième étape dans laquelle on transmet à l'outil de diagnostic un message généré par l'équipement électronique communicant en réponse à la requête de télédiagnostic.  a fourth step in which a message generated by the communicating electronic equipment in response to the remote diagnosis request is transmitted to the diagnostic tool.
Ainsi, de nombreux équipements électroniques communicants anciens, c'est-à-dire n'ayant pas été agencés pour reconnaître une demande de session de télédiagnostic, peuvent désormais faire l'objet d'un télédiagnostic sans que cela ne nécessite leur modification.  Thus, many old communicating electronic equipment, that is to say not having been arranged to recognize a request for a remote diagnostic session, can now be the subject of a remote diagnosis without this necessitates their modification.
Le procédé selon l'invention peut comporter d'autres caractéristiques qui peuvent être prises séparément ou en combinaison, et notamment :  The method according to the invention may comprise other characteristics that can be taken separately or in combination, and in particular:
- dans un premier mode de réalisation, dans la deuxième étape on peut réaliser la comparaison dans un serveur de communication qui assure une interface de communication entre l'outil de diagnostic et le module de communication du véhicule diagnostiqué. Dans ce cas, dans la troisième étape on peut analyser la réponse générée par l'équipement électronique communicant dans le serveur de communication, puis si cette réponse est une acceptation de la session de télédiagnostic ou un refus prédéfini de la session de télédiagnostic, le serveur de communication peut transmettre la requête de télédiagnostic à l'équipement électronique communicant, via le module de communication ;  in a first embodiment, in the second step, the comparison can be made in a communication server which provides a communication interface between the diagnostic tool and the communication module of the diagnosed vehicle. In this case, in the third step it is possible to analyze the response generated by the communicating electronic equipment in the communication server, and if this response is an acceptance of the remote diagnostic session or a predefined refusal of the remote diagnostic session, the server communication device can transmit the remote diagnosis request to the communicating electronic equipment, via the communication module;
- dans un second mode de réalisation, dans la deuxième étape on peut réaliser la comparaison dans le module de communication du véhicule qui comprend l'équipement électronique communicant destinataire de la requête de télédiagnostic. Dans ce cas, dans la troisième étape on peut analyser la réponse générée par l'équipement électronique communicant dans ce module de communication, puis si cette réponse est une acceptation de la session de télédiagnostic ou un refus prédéfini de la session de télédiagnostic, le module de communication peut transmettre la requête de télédiagnostic à l'équipement électronique communicant ; in a second embodiment, in the second step, the comparison can be made in the communication module of the vehicle which comprises the communicating electronic equipment to which the remote diagnosis request is addressed. In this case, in the third step, the response generated by the communicating electronic equipment can be analyzed in this communication module, and if this response is an acceptance of the remote diagnosis session or a predefined refusal of the remote diagnosis session, the module communication can transmit the remote diagnostic request to communicating electronic equipment;
- dans la quatrième étape, si la réponse à la demande de session de télédiagnostic est une acceptation de la session de télédiagnostic, on peut commencer par adresser à l'équipement électronique communicant, destinataire de la requête de télédiagnostic, un message de fermeture de session de télédiagnostic, puis en cas de réception d'un message de confirmation de fermeture de cette session de télédiagnostic, on peut transmettre à l'outil de diagnostic le message généré par l'équipement électronique communicant en réponse à la requête de télédiagnostic, accompagné d'une valeur prédéfinie du paramètre de télédiagnostic ;  in the fourth step, if the answer to the request for a remote diagnosis session is an acceptance of the remote diagnosis session, it is possible to first address to the communicating electronic equipment, the recipient of the remote diagnosis request, a logoff message; remote diagnosis, then in case of receipt of a closing confirmation message of this remote diagnostic session, it is possible to transmit to the diagnostic tool the message generated by the communicating electronic equipment in response to the remote diagnosis request, accompanied by a predefined value of the remote diagnosis parameter;
- dans la quatrième étape, si la réponse à la demande de session de télédiagnostic est un refus prédéfini de cette session de télédiagnostic, on peut transmettre à l'outil de diagnostic le message généré par l'équipement électronique communicant en réponse à la requête de télédiagnostic, accompagné d'une valeur prédéfinie du paramètre de télédiagnostic ;  in the fourth step, if the answer to the request for a remote diagnosis session is a predefined refusal of this remote diagnostic session, the message generated by the communicating electronic equipment can be transmitted to the diagnostic tool in response to the request of remote diagnosis, accompanied by a predefined value of the remote diagnosis parameter;
- dans la deuxième étape, en cas d'identité entre la valeur reçue et la valeur prédéfinie, on peut commencer par vérifier si la requête de télédiagnostic est autorisée pour l'équipement électronique communicant, puis, dans l'affirmative, on peut transmettre la demande de session de télédiagnostic à l'équipement électronique communicant.  in the second step, in case of identity between the received value and the predefined value, it is possible to first check whether the remote diagnosis request is authorized for the communicating electronic equipment, and if so, the transmission can be transmitted. remote diagnostic session request to the communicating electronic equipment.
L'invention propose également un système permettant de réaliser à distance des diagnostics de véhicules comprenant chacun un module de communication propre à communiquer par voie d'ondes et couplé à des équipements électroniques communicants embarqués.  The invention also proposes a system for remotely performing vehicle diagnostics each comprising a communication module adapted to communicate by waves and coupled to on-board communicating electronic equipment.
Ce système se caractérise par le fait qu'il comprend :  This system is characterized by the fact that it includes:
- un outil de diagnostic propre à générer une requête de télédiagnostic associée à une valeur d'un paramètre de télédiagnostic à destination d'un équipement électronique communicant d'un véhicule, et  a diagnostic tool capable of generating a remote diagnosis request associated with a value of a remote diagnostic parameter intended for a communicating electronic equipment of a vehicle, and
- des moyens de traitement agencés pour comparer cette valeur à une valeur prédéfinie, et en cas d'identité entre ces dernières pour déclencher la transmission d'une demande de session de télédiagnostic à destination de cet équipement électronique communicant, puis, en cas de réception d'une réponse à cette demande générée par ce dernier et représentant une acceptation ou un refus prédéfini de ladite session de télédiagnostic, pour déclencher la transmission de la requête de télédiagnostic à l'équipement électronique communicant, afin que ce dernier génère à destination de l'outil de diagnostic un message de réponse à la requête de télédiagnostic. processing means arranged to compare this value with a predefined value, and in case of identity between them to trigger the transmission of a request for a remote diagnosis session intended for this communicating electronic equipment, then, in case of reception, a response to this request generated by the latter and representative a predefined acceptance or refusal of said remote diagnosis session, to trigger the transmission of the remote diagnosis request to the communicating electronic equipment, so that the latter generates a response message to the diagnostic remote diagnosis request to the diagnostic tool; .
Le système selon l'invention peut comporter d'autres caractéristiques qui peuvent être prises séparément ou en combinaison, et notamment :  The system according to the invention may comprise other characteristics that can be taken separately or in combination, and in particular:
- dans un premier mode de réalisation, ses moyens de traitement peuvent être installés dans un serveur de communication qui assure une interface de communication entre l'outil de diagnostic et le module de communication du véhicule diagnostiqué ;  in a first embodiment, its processing means can be installed in a communication server which provides a communication interface between the diagnostic tool and the communication module of the diagnosed vehicle;
- dans un second mode de réalisation, ses moyens de traitement peuvent être installés dans le module de communication du véhicule comprenant l'équipement électronique communicant destinataire de la requête de télédiagnostic ;  in a second embodiment, its processing means can be installed in the communication module of the vehicle comprising the communicating electronic equipment to which the remote diagnosis request is addressed;
- ses moyens de traitement peuvent être agencés, en cas d'identité entre la valeur reçue et la valeur prédéfinie, pour commencer par vérifier si la requête de télédiagnostic est autorisée pour l'équipement électronique communicant destinataire, puis, dans l'affirmative, pour déclencher la transmission de la demande de session de télédiagnostic à cet équipement électronique communicant.  its processing means can be arranged, in the event of identity between the received value and the predefined value, to first check whether the remote diagnostic request is authorized for the communicating electronic equipment to which it is addressed, then, if so, for trigger the transmission of the request for a remote diagnostic session to this communicating electronic equipment.
D'autres caractéristiques et avantages de l'invention apparaîtront à l'examen de la description détaillée ci-après, et des dessins annexés, sur lesquels :  Other features and advantages of the invention will appear on examining the detailed description below, and the attached drawings, in which:
- la figure 1 illustre schématiquement et fonctionnellement, une installation de communication à laquelle est couplé un exemple de réalisation d'un système de réalisation de télédiagnostics de véhicules selon l'invention, et FIG. 1 schematically and functionally illustrates a communication installation to which is coupled an exemplary embodiment of a system for carrying out remote diagnostics of vehicles according to the invention, and
- la figure 2 illustre schématiquement un exemple d'algorithme mettant en œuvre un exemple de réalisation d'un procédé de réalisation de télédiagnostics selon l'invention. FIG. 2 schematically illustrates an example of an algorithm implementing an exemplary embodiment of a method for performing remote diagnostics according to the invention.
L'invention a notamment pour but de proposer un procédé de réalisation de télédiagnostics, et un système de réalisation de télédiagnostics SD associé, destinés à permettre la réalisation de télédiagnostics de véhicules V comprenant des équipements électroniques communicants EEj et un module de communication MC pouvant communiquer par voie d'ondes avec un réseau de communication RC. The object of the invention is in particular to propose a method for performing remote diagnostics, and a system for carrying out remote diagnostics. Associated SD, intended to allow the realization of remote diagnostics of vehicles V comprising communicating electronic equipment EEj and a communication module MC able to communicate by waves with a communication network RC.
Dans ce qui suit, on considère, à titre d'exemple non limitatif, que les véhicules V qui peuvent faire l'objet de télédiagnostics sont de type automobile. Il s'agit par exemple de voitures. Mais l'invention n'est pas limitée à ce type de véhicule. Elle concerne en effet tout type de véhicule terrestre, maritime (ou fluvial) ou aérien, dès lors qu'il comprend des équipements électroniques communicants pouvant faire l'objet de diagnostic(s) et couplés à un module de communication pouvant communiquer par voie d'ondes avec un réseau de communication.  In what follows, it is considered, by way of non-limiting example, that the vehicles V which can be the subject of remote diagnostics are of the automotive type. This is for example cars. But the invention is not limited to this type of vehicle. It concerns any type of land vehicle, maritime (or fluvial) or air, as it includes communicating electronic equipment that can be diagnosed (s) and coupled to a communication module that can communicate by way of waves with a communication network.
On a schématiquement représenté sur la figure 1 un exemple d'installation de communication à laquelle est couplé un exemple de réalisation d'un système SD de télédiagnostics de véhicules V.  FIG. 1 shows schematically an example of a communication installation to which is coupled an exemplary embodiment of an SD system for remote diagnostics of vehicles V.
L'installation de communication comprend notamment un réseau de communication RC comportant, d'une part, une infrastructure de communication non filaire à laquelle peuvent se connecter des modules de communication MC implantés dans des véhicules V, et, d'autre part, une infrastructure de communication filaire à laquelle peuvent se connecter des équipements de communication filaire, comme par exemple un serveur SC et un outil de diagnostic OD. On notera que les modules de communication non filaire MC et équipements de communication filaire SC et OD pourraient être connectés à différents réseaux de communication interconnectés les uns aux autres, de préférence via l'Internet.  The communication installation comprises in particular an RC communication network comprising, on the one hand, a non-wired communication infrastructure to which communication modules MC located in vehicles V can be connected, and, on the other hand, an infrastructure wired communication device to which wired communication equipment can be connected, such as an SC server and an OD diagnostic tool. Note that the wireless communication modules MC and wired communication equipment SC and OD could be connected to different communication networks interconnected to each other, preferably via the Internet.
Chaque véhicule V pouvant faire l'objet de diagnostics comprend au moins des équipements électroniques communicants EEj et un module de communication MC couplés entre eux.  Each vehicle V that can be diagnosed comprises at least communicating electronic equipment EEj and a communication module MC coupled together.
Par exemple, et comme illustré non limitativement, les équipements électroniques communicants EEj sont connectés à au moins un réseau de communication embarqué RCE, éventuellement de type multiplexé.  For example, and as illustrated without limitation, the communicating electronic equipment EEj are connected to at least one onboard communication network RCE, possibly of the multiplexed type.
On entend ici par « équipement électronique communicant » un équipement capable de recevoir et de traiter des trames de données numériques circulant dans le bus d'un réseau de communication embarqué RCE auquel il est connecté, ainsi que de fournir à ce dernier (RCE) des trames de données destinées à au moins un autre équipement électronique communicant. Il pourra, par exemple, s'agir d'un calculateur, d'un capteur ou d'un actionneur. Here, the term "communicating electronic equipment" means equipment capable of receiving and processing data frames. digital network circulating on the bus of an RCE on-board communication network to which it is connected, and to provide the latter (RCE) data frames for at least one other communicating electronic equipment. It may, for example, be a calculator, a sensor or an actuator.
On notera que dans l'exemple illustré non limitativement sur la figure 1 , le véhicule V comprend quatre équipements électroniques communicants EEj (j = 1 à 4). Mais le nombre d'équipements électroniques communicants EEj peut prendre n'importe quelle valeur supérieure ou égale à un (1 ).  It will be noted that in the example shown non-limitatively in FIG. 1, the vehicle V comprises four communicating electronic equipments EEj (j = 1 to 4). But the number of communicating electronic equipment EEj can take any value greater than or equal to one (1).
On notera également que dans l'exemple illustré non limitativement sur la figure 1 , le véhicule V comprend également un équipement de supervision ES connecté au réseau de communication embarqué RCE et au module de communication MC. Cet équipement de supervision ES est un équipement électronique communicant qui est notamment chargé d'assurer l'interfaçage entre le module de communication MC et les autres équipements électroniques communicants EEj et de contrôler des fonctionnalités de diagnostic. Il s'agit par exemple de ce que l'homme de l'art appelle parfois un « boîtier de servitude intelligent » (ou BSI)).  It will also be noted that in the example shown non-limitatively in FIG. 1, the vehicle V also comprises a supervision equipment ES connected to the on-board communication network RCE and to the communication module MC. This ES supervision equipment is a communicating electronic equipment which is responsible in particular for interfacing between the communication module MC and the other communicating electronic equipment EEj and controlling diagnostic functions. This is for example what the skilled person sometimes calls an "intelligent servitude case" (or BSI).
Par ailleurs, chaque véhicule V est associé à un identifiant de véhicule. Ce dernier peut, par exemple, être celui qui est appelé en anglais « Vehicle Identification Number » (ou VIN).  Moreover, each vehicle V is associated with a vehicle identifier. The latter may, for example, be that which is called in English "Vehicle Identification Number" (or VIN).
Comme illustré non limitativement sur l'unique figure, un système de réalisation de télédiagnostics SD, selon l'invention, comprend au moins des moyens de traitement MT et un outil de diagnostic OD.  As illustrated in a non-limiting manner in the single figure, a remote diagnosis system SD, according to the invention, comprises at least MT processing means and a diagnostic tool OD.
L'outil de diagnostic OD est agencé pour réaliser à distance, éventuellement à la demande du module de communication MC d'un véhicule V ou d'un équipement de communication sans fil utilisé par un passager du véhicule V, un télédiagnostic de ce dernier (V), fonction de son identifiant de véhicule.  The diagnostic tool OD is designed to perform remotely, possibly at the request of the communication module MC of a vehicle V or wireless communication equipment used by a passenger of the vehicle V, a remote diagnosis of the latter ( V), according to its vehicle identifier.
Cet outil de diagnostic OD est, par exemple, un ordinateur fixe ou portable connecté au réseau de communication RC et utilisé par un téléopérateur ou un réparateur sachant contrôler un télédiagnostic et faire des propositions une fois ce dernier terminé. Par ailleurs, cet outil de diagnostic OD peut, par exemple, appartenir à un service après-ventes d'un fabriquant de véhicules (ici un constructeur automobile). This OD diagnostic tool is, for example, a fixed or portable computer connected to the RC communication network and used by a teleoperator or a repair technician able to control a remote diagnosis and make proposals once the latter is finished. Moreover, this diagnostic tool OD can, for example, belong to an after-sales service of a vehicle manufacturer (here a car manufacturer).
L'outil de diagnostic OD comprend notamment des modules logiciels (ou « software ») constituant ensemble un programme similaire à celui qui est implanté dans un outil de diagnostic utilisé par les techniciens d'un garage (ou d'une concession), comme par exemple celui qui est appelé DiagBox® et qui sert à diagnostiquer les problèmes dans les véhicules des marques Peugeot et Citroën.  The OD diagnostic tool includes software modules (or "software") together constituting a program similar to that which is implemented in a diagnostic tool used by the technicians of a garage (or a concession), as per example that is called DiagBox® and used to diagnose problems in Peugeot and Citroën vehicles.
L'outil de diagnostic OD peut comporter des premiers moyens de stockage MS1 dans lesquels se trouvent stockés tous les diagnostics qui peuvent être réalisés à distance pour certains au moins des modèles de véhicule d'au moins une marque, lesquels sont identifiés par leur identifiant de véhicule. Ces premiers moyens de stockage MS1 peuvent se présenter sous n'importe quelle forme connue de l'homme de l'art, et notamment sous la forme d'une mémoire ou d'une banque de données.  The diagnostic tool OD may comprise first storage means MS1 in which are stored all the diagnostics that can be performed remotely for at least some of the vehicle models of at least one brand, which are identified by their identifier of vehicle. These first storage means MS1 can be in any form known to those skilled in the art, and especially in the form of a memory or a database.
Chaque module de communication MC est notamment propre à dialoguer avec un outil de diagnostic OD pour demander la réalisation d'un télédiagnostic de son véhicule V et pour lui transmettre l'identifiant de véhicule de ce véhicule V. Il comprend des circuits électroniques (ou « hardware ») et des modules logiciels (ou « software »). Par ailleurs, il sert également de passerelle de communication (ou « gateway ») entre l'outil de diagnostic OD et les équipements électroniques communicants EEj de son véhicule V, via (ici) leur équipement de supervision ES, pour qu'ils échangent des requêtes de diagnostic et des messages de réponse à ces requêtes de diagnostic. Une requête de télédiagnostic est un message comportant notamment un identifiant de diagnostic à réaliser et un identifiant d'équipement électronique communicant EEj à diagnostiquer.  Each communication module MC is in particular able to communicate with an OD diagnostic tool to request the realization of a remote diagnosis of its vehicle V and to transmit to it the vehicle identifier of this vehicle V. It comprises electronic circuits (or " hardware ") and software modules (or" software "). Furthermore, it also serves as a gateway between the diagnostic tool OD and the communicating electronic equipment EEj of its vehicle V, via (here) their ES supervision equipment, so that they exchange diagnostic queries and response messages to these diagnostic queries. A request for remote diagnostics is a message comprising in particular a diagnostic identifier to be produced and a communicating electronic equipment identifier EEj to be diagnosed.
On comprendra que cet échange de requête et de messages de réponse est destiné à permettre à l'outil de diagnostic OD qui communique temporairement avec un véhicule V, via son module de communication MC, de réaliser un diagnostic à distance (ou télédiagnostic), puis de transmettre un résultat de diagnostic à ce véhicule V.  It will be understood that this exchange of requests and response messages is intended to enable the diagnostic tool OD which communicates temporarily with a vehicle V, via its communication module MC, to carry out a remote diagnosis (or remote diagnosis), then to transmit a diagnostic result to this vehicle V.
Pour que les requêtes de diagnostic puissent être utilisées par au moins un réseau de communication embarqué RCE d'un véhicule V, il faut qu'elles se présentent sous la forme de trames conformes au protocole de communication qui est utilisé dans leurs bus (par exemple le protocole CAN), et pour que ces trames (CAN) puissent parvenir jusqu'au au niveau de l'équipement de supervision ES via le réseau IP, il faut qu'elles soient en outre encapsulées en TCP/IP (« Transport Control Protocol / Internet Protocol »). De préférence, le module de communication MC est chargé de gérer tous les aspects de l'encapsulation. Dans ce cas, il (MC) est chargé de désencapsuler les trames encapsulées en TCP/IP pour récupérer les seules trames CAN afin de les transmettre à leur(s) destinataire(s). De même, il (MC) est chargé d'encapsuler les trames CAN comprenant les messages de réponse en TCP/IP, pour qu'elles puissent être transmises à l'outil de diagnostic OD. For diagnostic queries to be used by least one on-board communication network RCE of a vehicle V, they must be in the form of frames compliant with the communication protocol that is used in their buses (for example the CAN protocol), and for these frames ( CAN) can reach up to the level of the ES monitoring equipment via the IP network, they must be further encapsulated in TCP / IP (Transport Control Protocol / Internet Protocol). Preferably, the communication module MC is responsible for managing all aspects of the encapsulation. In this case, it (MC) is responsible for de-encapsulating the encapsulated frames in TCP / IP to recover the only CAN frames in order to transmit them to their recipient (s). Similarly, it (MC) is responsible for encapsulating the CAN frames comprising the TCP / IP response messages so that they can be transmitted to the diagnostic tool OD.
Le module de communication MC peut, par exemple, être de type 3G ou 4G de manière à pouvoir être accessible directement par son adresse IP (privée et fournie par contrat par un opérateur, ou publique et re-routée temporairement par un opérateur sur une adresse dans le cadre d'une session de communication et donc considérée comme privée uniquement pendant la durée de cette session de communication).  The communication module MC may, for example, be of 3G or 4G type so as to be accessible directly by its IP address (private and contractually provided by an operator, or public and re-routed temporarily by an operator to an address as part of a communication session and therefore considered private only during the duration of this communication session).
Lorsque c'est le véhicule V qui sollicite un télédiagnostic, éventuellement à la demande du conducteur, son module de communication MC initie une communication de données (et éventuellement de voix) avec l'outil de diagnostic OD, éventuellement via un serveur de communication SC. L'éventuelle communication de voix (ou téléphonique) est destinée à permettre au téléopérateur ou réparateur qui utilise l'outil de diagnostic OD de dialoguer par téléphone avec un passager du véhicule V. La communication de données (ou « data ») est établie, par exemple sous IP (« Internet Protocol »). Le module de communication MC peut se connecter directement à l'éventuel serveur de communication SC via l'Internet du fait qu'il connaît son adresse IP.  When it is the vehicle V that requests a remote diagnosis, possibly at the request of the driver, his communication module MC initiates a data communication (and possibly voice) with the diagnostic tool OD, possibly via a communication server SC . The possible voice (or telephone) communication is intended to allow the teleoperator or repairer who uses the OD diagnostic tool to communicate by telephone with a passenger of the vehicle V. The data communication (or "data") is established, for example under IP ("Internet Protocol"). The communication module MC can connect directly to the eventual communication server SC via the Internet because it knows its IP address.
On notera que l'éventuel serveur de communication SC peut appartenir au service après-ventes du fabriquant de véhicules (ici un constructeur automobile). Il peut également faire partie du système de réalisation de télédiagnostics SD. Comme indiqué plus haut, l'invention propose un procédé de réalisation de télédiagnostics qui peut être mis en œuvre au moyen d'un système de réalisation de télédiagnostics SD. Un tel procédé comprend au moins quatre étapes. Note that the eventual communication server SC may belong to the after-sales service of the manufacturer of vehicles (here a car manufacturer). It can also be part of the system for performing SD remote diagnostics. As indicated above, the invention proposes a method for performing remote diagnostics that can be implemented by means of an SD remote diagnosis system. Such a method comprises at least four steps.
Une première étape, du procédé selon l'invention, est initiée lorsqu'un télédiagnostic a été requis ou décidé pour un véhicule V.  A first step of the method according to the invention is initiated when a remote diagnosis has been required or decided for a vehicle V.
Dans cette première étape, l'outil de diagnostic OD génère une requête de télédiagnostic associée à une valeur Vpd (ou « flag ») d'un paramètre de télédiagnostic à destination d'un équipement électronique communicant EEj d'un véhicule V.  In this first step, the diagnostic tool OD generates a remote diagnosis request associated with a value Vpd (or "flag") of a remote diagnostic parameter for a communicating electronic equipment EEj of a vehicle V.
Dans une deuxième étape, du procédé selon l'invention, on compare la valeur vpd à une valeur prédéfinie v1 , et en cas d'identité entre ces dernières (vpd et v1 ) on transmet une demande de session de télédiagnostic à l'équipement électronique communicant EEj qui est le destinataire de la requête de télédiagnostic. Cette transmission se fait via l'éventuel serveur de communication SC, le réseau de communication RC, le module de communication MC et les éventuels équipements de supervision ES et réseau de communication embarqué RCE. In a second step, of the method according to the invention, the value v pd is compared with a predefined value v1, and if there is an identity between them (v pd and v1) a request for a remote diagnostic session is transmitted to the communicating electronic equipment EEj which is the recipient of the remote diagnosis request. This transmission is done via the possible SC communication server, the RC communication network, the MC communication module and any ES supervision equipment and RCE on-board communication network.
La valeur prédéfinie v1 peut, par exemple, être codée sur au moins un bit. A titre d'exemple, elle peut être égale à un (1 ). Mais elle pourrait être codée différemment (par exemple sur plusieurs bits).  The predefined value v1 may, for example, be coded on at least one bit. For example, it can be equal to one (1). But it could be coded differently (for example on several bits).
La comparaison de valeurs (vpd et v1 ) est destinée à sécuriser la phase de télédiagnostics. En effet, si les valeurs Vpd et v1 ne sont pas identiques on (les moyens de traitement MT du système de réalisation de télédiagnostics SD) adresse(nt) à l'outil de diagnostic OD un message signalant qu'une condition n'est pas satisfaite, et donc la requête de télédiagnostic n'est pas transmise à l'équipement électronique communicant EEj qui en est le destinataire. The comparison of values (v pd and v1) is intended to secure the remote diagnosis phase. Indeed, if the values Vpd and v1 are not identical, (the processing means MT of the remote diagnosis system SD) address (s) to the diagnostic tool OD a message indicating that a condition is not satisfied, and thus the request for remote diagnosis is not transmitted to communicating electronic equipment EEj who is the recipient.
Cette comparaison de valeurs (vpd et v1 ) peut être réalisée en au moins deux endroits différents. This comparison of values (v pd and v1) can be performed in at least two different places.
Ainsi, et comme illustré non limitativement sur la figure 1 , elle peut être réalisée dans le module de communication MC du véhicule V qui comprend l'équipement électronique communicant EEj qui est le destinataire de la requête de télédiagnostic. Dans ce cas, le module de communication MC doit être équipé des moyens de traitement MT du système de réalisation de télédiagnostics SD, du fait qu'ils sont notamment chargés de réaliser les comparaisons de valeurs (vpd et v1 ). A cet effet, les moyens de traitement MT peuvent être agencés sous la forme de circuits électroniques et/ou de modules logiciels. Thus, and as illustrated without limitation in FIG. 1, it can be implemented in the communication module MC of the vehicle V which comprises the communicating electronic equipment EEj which is the recipient the remote diagnostic request. In this case, the communication module MC must be equipped with the processing means MT of the remote diagnostic system SD, because they are in particular responsible for performing the comparisons of values (v pd and v1). For this purpose, the processing means MT may be arranged in the form of electronic circuits and / or software modules.
Dans une variante de réalisation non illustrée, la comparaison de valeurs (ν^ et v1 ) peut être réalisée dans le serveur de communication SC qui assure l'interface de communication entre l'outil de diagnostic OD et le module de communication MC du véhicule V diagnostiqué. Dans ce cas, le serveur de communication SC doit être équipé des moyens de traitement MT précités du système de réalisation de télédiagnostics SD. Cette variante évite d'accroître le nombre de tâches que doit assurer chaque module de communication MC, mais elle augmente notablement les temps d'obtention des informations, voire peut induire l'arrêt logiciel d'une phase de télédiagnostics lorsque le serveur de communication SC est surchargé et/ou le réseau de communication RC encombré.  In a variant embodiment not illustrated, the comparison of values (ν 1 and v 1) can be performed in the communication server SC which provides the communication interface between the diagnostic tool OD and the communication module MC of the vehicle V diagnostic. In this case, the communication server SC must be equipped with the aforementioned processing means MT of the remote diagnostic system SD. This variant avoids increasing the number of tasks to be performed by each communication module MC, but it significantly increases the time of obtaining the information, or may induce the software shutdown of a remote diagnostic phase when the communication server SC is overloaded and / or the congested RC communication network.
Afin de sécuriser encore plus la phase de télédiagnostics, dans la deuxième étape, en cas d'identité entre la valeur vpd et la valeur prédéfinie v1 , on peut commencer par vérifier si la requête de télédiagnostic est autorisée pour l'équipement électronique communicant EEj. Cette vérification est réalisée par les moyens de traitement MT auprès de seconds moyens de stockage MS2 qui stockent des identifiants de diagnostics en correspondance d'identifiants d'équipements électroniques communicants EEj. In order to make the remote diagnosis phase even more secure, in the second step, if the identity between the value v pd and the predefined value v1 is identical, it can first be checked whether the remote diagnosis request is authorized for the communicating electronic equipment EEj . This verification is carried out by the processing means MT with second storage means MS2 which store diagnostic identifiers in correspondence of identifiers of communicating electronic equipment EEj.
Comme illustré non limitativement sur la figure 1 , les seconds moyens de stockage MS2 peuvent être implantés dans l'équipement (ici le module de communication MC) qui comprend les moyens de traitement MT. Mais cela n'est pas obligatoire. En effet, ils pourraient être déportés, par exemple dans l'équipement de supervision ES ou dans le serveur de communication SC. Dans ce dernier cas (totalement déporté), les seconds moyens de stockage MS2 doivent stocker des identifiants de diagnostics en correspondance d'identifiants d'équipements électroniques communicants EEj et d'identifiants de véhicules. Ces seconds moyens de stockage MS2 peuvent se présenter sous n'importe quelle forme connue de l'homme de l'art, et notamment sous la forme d'une mémoire ou d'une banque de données. As illustrated without limitation in FIG. 1, the second storage means MS2 may be located in the equipment (here the communication module MC) which comprises the processing means MT. But this is not obligatory. Indeed, they could be deported, for example in ES supervision equipment or in the communication server SC. In the latter case (totally remote), the second storage means MS2 must store diagnostic identifiers in correspondence of communicating electronic equipment identifiers EEj and vehicle identifiers. These second storage means MS2 may be in any form known to those skilled in the art, and in particular in the form of a memory or a database.
Une fois la vérification terminée, on transmet la demande de session de télédiagnostic à l'équipement électronique communicant EEj si la requête de télédiagnostic est autorisée pour ce dernier (EEj).  Once the verification is complete, the remote diagnostic session request is transmitted to the communicating electronic equipment EEj if the remote diagnosis request is authorized for the latter (EEj).
Dans une troisième étape, du procédé selon l'invention, l'équipement électronique communicant EEj diagnostiqué génère une réponse à la demande de session de télédiagnostic qu'il a reçue en fin de deuxième étape si les valeurs vpd et v1 étaient identiques. Puis, si cette réponse est une acceptation de la session de télédiagnostic ou un refus prédéfini de cette session de télédiagnostic, on transmet la requête de télédiagnostic à l'équipement électronique communicant EEj diagnostiqué. In a third step, of the method according to the invention, the communicating electronic equipment EEj diagnosed generates a response to the request for a remote diagnosis session that it received at the end of the second step if the values v pd and v1 were identical. Then, if this answer is an acceptance of the remote diagnosis session or a predefined refusal of this remote diagnosis session, the remote diagnostic request is transmitted to the diagnosed electronic communicating equipment EEj.
On entend ici par « acceptation de la session de télédiagnostic » une acceptation de participer à la session de télédiagnostic requise par l'outil de diagnostic OD. Une telle acceptation est automatiquement décidée par un équipement électronique communicant EEj de fabrication récente, et donc qui a été agencé de manière à reconnaître et accepter une demande de session de télédiagnostic afin de pouvoir faire l'objet de diagnostics à distance.  Here, the term "acceptance of the remote diagnosis session" means an acceptance to participate in the remote diagnosis session required by the OD diagnostic tool. Such acceptance is automatically decided by communicating electronic equipment EEj of recent manufacture, and therefore that has been arranged to recognize and accept a request for remote diagnostic session in order to be subject to remote diagnostics.
Par ailleurs, on entend ici par « refus prédéfini » un refus de participer à la session de télédiagnostic requise par l'outil de diagnostic OD, et présentant une « valeur » prédéfinie (comme par exemple « NACK 12 » qui est une valeur normative en réponse à une demande non prédéfinie). Un tel refus est automatiquement décidé par un équipement électronique communicant EEj de fabrication ancienne, et donc qui ne peut pas faire l'objet de diagnostics à distance du fait qu'il n'a pas été agencé pour reconnaître une demande de session de télédiagnostic.  Moreover, here "predefined refusal" denotes the refusal to participate in the remote diagnosis session required by the diagnostic tool OD, and having a predefined "value" (for example "NACK 12" which is a normative value in response to a non-predefined request). Such a refusal is automatically decided by a communicating electronic equipment EEj of old manufacture, and therefore that can not be the object of remote diagnostics because it has not been arranged to recognize a request for remote diagnostic session.
L'analyse de la réponse à la demande de session de télédiagnostic, générée par l'équipement électronique communicant EEj diagnostiqué, est réalisée par les moyens de traitement MT. Par conséquent elle peut être réalisée soit dans le module de communication MC (comme illustré non limitativement sur la figure 1 ), soit dans le serveur de communication SC.  The analysis of the response to the request for a remote diagnosis session, generated by the communicating electronic equipment EEj diagnosed, is performed by the processing means MT. Therefore it can be carried out either in the communication module MC (as illustrated not only in FIG. 1), or in the communication server SC.
Dans le cas d'une réalisation dans le module de communication MC, dans la troisième étape les moyens de traitement MT analysent la réponse générée par l'équipement électronique communicant EEj. Puis, si cette réponse est une acceptation ou un refus prédéfini de la session de télédiagnostic, ils déclenchent la transmission par le module de communication MC de la requête de télédiagnostic reçue dans la première étape à cet équipement électronique communicant EEj. In the case of an embodiment in the communication module MC, in the third step, the processing means MT analyze the response generated by the communicating electronic equipment EEj. Then, if this answer is a predefined acceptance or refusal of the remote diagnosis session, they trigger the transmission by the communication module MC of the remote diagnosis request received in the first step to this communicating electronic equipment EEj.
Dans le cas d'une réalisation dans le serveur de communication SC, dans la troisième étape les moyens de traitement MT analysent la réponse générée par l'équipement électronique communicant EEj. Puis, si cette réponse est une acceptation ou un refus prédéfini de la session de télédiagnostic, ils déclenchent la transmission par le serveur de communication SC de la requête de télédiagnostic reçue dans la première étape à cet équipement électronique communicant EEj, via le réseau de communication RC et le module de communication MC du véhicule V diagnostiqué.  In the case of an embodiment in the communication server SC, in the third step the processing means MT analyze the response generated by the communicating electronic equipment EEj. Then, if this answer is a predefined acceptance or refusal of the remote diagnosis session, they trigger the transmission by the communication server SC of the remote diagnosis request received in the first step to this communicating electronic equipment EEj, via the communication network. RC and the vehicle communication module MC diagnosed V.
Dans une quatrième étape, du procédé selon l'invention, on transmet à l'outil de diagnostic OD un message qui a été généré par l'équipement électronique communicant EEj diagnostiqué en réponse à la requête de télédiagnostic transmise lors de la troisième étape. Cette transmission est assurée par le module de communication MC, et se fait via le réseau de communication RC et l'éventuel serveur de communication SC.  In a fourth step, of the method according to the invention, a message is transmitted to the diagnostic tool OD which has been generated by the communicating electronic equipment EEj diagnosed in response to the remote diagnosis request transmitted during the third step. This transmission is provided by the communication module MC, and is done via the communication network RC and the eventual communication server SC.
On notera que dans la quatrième étape, lorsque la réponse à la demande de session de télédiagnostic est une acceptation de cette session de télédiagnostic, il est préférable de commencer par adresser à l'équipement électronique communicant EEj, qui est le destinataire de la requête de télédiagnostic, un message de fermeture de session de télédiagnostic, afin qu'il sache que son télédiagnostic est terminé. La transmission de ce message de fermeture de session de télédiagnostic est déclenchée par les moyens de traitement MT. Par conséquent elle peut être réalisée soit dans le module de communication MC (comme illustré non limitativement sur la figure 1 ), soit dans le serveur de communication SC.  Note that in the fourth step, when the response to the remote diagnostic session request is an acceptance of this remote diagnosis session, it is preferable to first address to the communicating electronic equipment EEj, which is the recipient of the request for telediagnosis, a remote diagnostic logout message, so that he knows that his telediagnosis is complete. The transmission of this telediagnostic logoff message is triggered by the processing means MT. Therefore it can be carried out either in the communication module MC (as illustrated not only in FIG. 1), or in the communication server SC.
Puis, en cas de réception d'un message de confirmation de fermeture de cette session de télédiagnostic, on transmet à l'outil de diagnostic OD le message qui a été généré par l'équipement électronique communicant EEj en réponse à la requête de télédiagnostic, accompagné d'une valeur prédéfinie du paramètre de télédiagnostic. Cette valeur est par exemple la même que celle référencée vpd qui a été transmise lors de la première étape. La transmission de ce message de réponse à la requête de télédiagnostic est déclenchée par les moyens de traitement MT. Par conséquent elle peut être réalisée soit dans le module de communication MC (comme illustré non limitativement sur la figure 1 ), soit dans le serveur de communication SC. Then, if a confirmation message of closure of this remote diagnostic session is received, the OD diagnostic tool is transmitted to the diagnostic tool. message that has been generated by the communicating electronic equipment EEj in response to the remote diagnosis request, accompanied by a predefined value of the remote diagnostic parameter. This value is for example the same as that referenced v pd which was transmitted during the first step. The transmission of this response message to the remote diagnosis request is triggered by the processing means MT. Therefore it can be carried out either in the communication module MC (as illustrated not only in FIG. 1), or in the communication server SC.
On notera également que dans la quatrième étape, lorsque la réponse à la demande de session de télédiagnostic est un refus prédéfini de cette session de télédiagnostic, il n'y a pas de session de télédiagnostic à fermer. Par conséquent, dès que l'on reçoit le message généré par l'équipement électronique communicant EEj en réponse à la requête de télédiagnostic, on peut le transmettre à l'outil de diagnostic OD accompagné d'une valeur prédéfinie du paramètre de télédiagnostic. Cette valeur est par exemple la même que celle référencée vpd qui a été transmise lors de la première étape. La transmission de ce message de réponse à la requête de télédiagnostic est déclenchée par les moyens de traitement MT. Par conséquent elle peut être réalisée soit dans le module de communication MC (comme illustré non limitativement sur la figure 1 ), soit dans le serveur de communication SC. It will also be noted that in the fourth step, when the response to the remote diagnostic session request is a predefined refusal of this remote diagnostic session, there is no remote diagnostic session to close. Consequently, as soon as the message generated by the communicating electronic equipment EEj is received in response to the remote diagnostic request, it can be transmitted to the diagnostic tool OD accompanied by a predefined value of the remote diagnostic parameter. This value is for example the same as that referenced v pd which was transmitted during the first step. The transmission of this response message to the remote diagnosis request is triggered by the processing means MT. Therefore it can be carried out either in the communication module MC (as illustrated not only in FIG. 1), or in the communication server SC.
On a schématiquement illustré sur la figure 2 un exemple d'algorithme mettant en œuvre un exemple de réalisation d'un procédé de réalisation de télédiagnostics selon l'invention. Cet exemple correspond au cas où les moyens de traitement MT du système de réalisation de télédiagnostics SD sont implantés dans le module de communication MC du véhicule V diagnostiqué.  FIG. 2 schematically illustrates an example of an algorithm implementing an exemplary embodiment of a method for performing remote diagnostics according to the invention. This example corresponds to the case where the processing means MT of the remote diagnosis system SD are located in the communication module MC of the vehicle V diagnosed.
Dans une sous-étape 10, l'outil de diagnostic OD génère une requête de télédiagnostic associée à une valeur Vpd d'un paramètre de télédiagnostic, puis il la transmet à destination d'un équipement électronique communicant EEj choisi du véhicule V.  In a sub-step 10, the diagnostic tool OD generates a remote diagnostic request associated with a value Vpd of a remote diagnosis parameter, and then transmits it to a communicating electronic equipment EEj chosen from the vehicle V.
La première étape du procédé selon l'invention correspond à cette sous-étape 10. Dans une sous-étape 20 on (les moyens de traitement MT) effectue(nt) un test pour comparer la valeur Vpd à une valeur prédéfinie v1 . The first step of the process according to the invention corresponds to this sub-step 10. In a sub-step 20 (the processing means MT) performs (s) a test to compare the value Vpd to a predefined value v1.
Si Vpd et v1 ne sont pas identiques, on effectue une sous-étape 30 dans laquelle on (les moyens de traitement MT) transmet(tent) à l'outil de diagnostic OD un message de réponse signalant qu'une condition n'est pas satisfaite, et donc la requête de télédiagnostic n'est pas transmise à l'équipement électronique communicant EEj qui en est le destinataire.  If Vpd and v1 are not identical, a sub-step 30 is carried out in which the processing means MT transmits to the diagnostic tool OD a response message indicating that a condition is not present. satisfied, and thus the request for remote diagnosis is not transmitted to communicating electronic equipment EEj who is the recipient.
En revanche, en cas d'identité entre vpd et v1 , on (les moyens de traitement MT) effectue(nt) une sous-étape 40 de vérification. Plus précisément, on (les moyens de traitement MT) vérifie(nt) auprès des seconds moyens de stockage MS2 si la requête de télédiagnostic est autorisée pour l'équipement électronique communicant EEj qui en est le destinataire. On the other hand, in case of identity between v pd and v1, the (the processing means MT) performs (s) a sub-step 40 of verification. More specifically, one (the processing means MT) verifies (s) from the second storage means MS2 if the remote diagnostic request is authorized for the communicating electronic equipment EEj which is the recipient.
Dans la négative, on (les moyens de traitement MT) effectue(nt) la sous-étape 30, afin de transmettre à l'outil de diagnostic OD un message de réponse signalant qu'une condition n'est pas satisfaite, et donc la requête de télédiagnostic n'est pas transmise à l'équipement électronique communicant EEj qui en est le destinataire.  If it is not, the processing means (MT) perform the sub-step 30, in order to transmit to the diagnostic tool OD a response message indicating that a condition is not satisfied, and therefore the remote diagnostic request is not transmitted to communicating electronic equipment EEj who is the recipient.
Dans l'affirmative, on effectue une sous-étape 50 dans laquelle les moyens de traitement MT déclenchent la transmission d'une demande de session de télédiagnostic à l'équipement électronique communicant EEj qui est le destinataire de la requête de télédiagnostic.  If so, a substep 50 is carried out in which the processing means MT trigger the transmission of a request for a remote diagnostic session to the communicating electronic equipment EEj which is the addressee of the remote diagnosis request.
La deuxième étape, du procédé selon l'invention, correspond aux sous-étapes 20, 40 et 50.  The second step of the process according to the invention corresponds to substeps 20, 40 and 50.
Puis, dans une sous-étape 60 l'équipement électronique communicant EEj diagnostiqué génère et transmet une réponse à la demande de session de télédiagnostic qu'il a reçue.  Then, in a substep 60, the communicating electronic equipment EEj diagnosed generates and transmits a response to the remote diagnostic session request it has received.
Ensuite, dans une sous-étape 70 on (les moyens de traitement MT) analyse(nt) la réponse à la demande de session de télédiagnostic transmise par l'équipement électronique communicant EEj.  Subsequently, in a substep 70 (the processing means MT) analyzes (s) the response to the remote diagnostic session request transmitted by the communicating electronic equipment EEj.
Si cette réponse est ni une acceptation de la session de télédiagnostic ni un refus prédéfini (comme par exemple « NACK 12 » qui est une valeur normative en réponse à une demande non prédéfinie) de cette session de télédiagnostic, on (les moyens de traitement MT) effectue(nt) la sous-étape 30, afin de transmettre à l'outil de diagnostic OD un message de réponse signalant qu'une condition n'est pas satisfaite, et donc la requête de télédiagnostic n'est pas transmise à l'équipement électronique communicant EEj qui en est le destinataire. If this response is neither an acceptance of the remote diagnostic session nor a predefined refusal (such as "NACK 12" which is a normative value in response to a non-predefined request) of this remote diagnosis session, the (the processing means MT) (do) substep 30, in order to transmit to the diagnostic tool OD a response message indicating that a condition is not satisfied, and therefore the remote diagnostic request is not transmitted to communicating electronic equipment EEj who is the recipient.
En revanche, si cette réponse est une acceptation de la session de télédiagnostic ou un refus prédéfini (comme par exemple « NACK 12 ») de cette session de télédiagnostic, on effectue une sous-étape 80. Dans cette dernière (80), on (les moyens de traitement MT) transmet(tent) la requête de télédiagnostic, reçue dans la sous-étape 10, à l'équipement électronique communicant EEj diagnostiqué. Puis, l'équipement électronique communicant EEj diagnostiqué génère et transmet une réponse à la requête de télédiagnostic qu'il a reçue.  On the other hand, if this answer is an acceptance of the remote diagnosis session or a predefined refusal (such as for example "NACK 12") of this remote diagnosis session, a substep 80 is carried out. In the latter (80), the processing means MT) transmits (tent) the remote diagnostic request, received in the sub-step 10, the communicating electronic equipment EEj diagnosed. Then, the communicating electronic equipment EEj diagnosed generates and transmits a response to the remote diagnostic request that it has received.
La troisième étape, du procédé selon l'invention, correspond aux sous-étapes 60 à 80.  The third step of the process according to the invention corresponds to substeps 60 to 80.
Si l'équipement électronique communicant EEj diagnostiqué est ancien, et donc qu'il n'a pas été agencé pour reconnaître une demande de session de télédiagnostic, on effectue ensuite une sous-étape 90. Dans cette dernière (90), on (les moyens de traitement MT) transmet(tent) à l'outil de diagnostic OD le message, qui a été généré par l'équipement électronique communicant EEj diagnostiqué en réponse à la requête de télédiagnostic, accompagné d'une valeur prédéfinie du paramètre de télédiagnostic.  If the communicating electronic equipment EEj diagnosed is old, and therefore it has not been arranged to recognize a request for a remote diagnosis session, then a sub-step 90 is performed. In the latter (90), the processing means MT) transmits (to) the diagnostic tool OD the message, which has been generated by the communicating electronic equipment EEj diagnosed in response to the remote diagnosis request, accompanied by a predefined value of the remote diagnostic parameter.
En revanche, si l'équipement électronique communicant EEj diagnostiqué a accepté la session de télédiagnostic lors de la sous-étape 60, on effectue ensuite une sous-étape 100. Dans cette dernière (100), on (les moyens de traitement MT) transmet(tent) à l'équipement électronique communicant EEj, qui est le destinataire de la requête de télédiagnostic, un message de fermeture de session de télédiagnostic, afin qu'il sache que son télédiagnostic est terminé. Puis, en cas de réception d'un message de confirmation de fermeture de cette session de télédiagnostic, on (les moyens de traitement MT) transmet(tent) à l'outil de diagnostic OD le message, qui a été généré par l'équipement électronique communicant EEj diagnostiqué en réponse à la requête de télédiagnostic, accompagné d'une valeur prédéfinie du paramètre de télédiagnostic. On the other hand, if the communicating electronic equipment EEj diagnosed has accepted the remote diagnosis session during the substep 60, then a substep 100 is carried out. In the latter (100), the (MT processing means) transmits (tent) to the communicating electronic equipment EEj, who is the recipient of the remote diagnosis request, a remote diagnosis logout message, so that he knows that his remote diagnosis is complete. Then, in the event of receipt of a confirmation message of closure of this remote diagnostic session, the (MT processing means) transmits (tent) to the diagnostic tool OD the message, which has been generated by the equipment electronic communicating EEj diagnosed in response to the request for remote diagnosis, accompanied by a predefined value the remote diagnostic parameter.
La quatrième étape, du procédé selon l'invention, correspond aux sous-étapes 90 et 100.  The fourth step of the method according to the invention corresponds to substeps 90 and 100.
L'invention permet d'augmenter notablement le nombre d'équipements électroniques communicants anciens pouvant faire l'objet d'un télédiagnostic sans que cela ne nécessite leur modification. The invention makes it possible to significantly increase the number of old communicating electronic equipment that can be the subject of remote diagnosis without this requiring their modification.

Claims

REVENDICATIONS
1 . Procédé pour réaliser à distance des diagnostics de véhicules (V) comprenant chacun un module de communication (MC) propre à communiquer avec un outil de diagnostic (OD) distant et couplé à des équipements électroniques communicants (EEj) embarqués, caractérisé en ce qu'il comprend une première étape dans laquelle ledit outil de diagnostic (OD) génère une requête de télédiagnostic associée à une valeur d'un paramètre de télédiagnostic à destination d'un équipement électronique communicant (EEj) d'un véhicule (V), une deuxième étape dans laquelle on compare ladite valeur à une valeur prédéfinie, et en cas d'identité entre ces dernières on transmet une demande de session de télédiagnostic audit équipement électronique communicant (EEj) destinataire, une troisième étape dans laquelle ce dernier (EEj) génère une réponse à ladite demande, puis si cette réponse est une acceptation de ladite session de télédiagnostic ou un refus prédéfini de ladite session de télédiagnostic on transmet ladite requête de télédiagnostic audit équipement électronique communicant (EEj), et une quatrième étape dans laquelle on transmet audit outil de diagnostic (OD) un message généré par ledit équipement électronique communicant (EEj) en réponse à ladite requête de télédiagnostic. 1. Method for remotely performing vehicle diagnostics (V) each comprising a communication module (MC) adapted to communicate with a remote diagnostic tool (OD) and coupled to on-board communicating electronic equipment (EEj), characterized in that it comprises a first step in which said diagnostic tool (OD) generates a remote diagnostic request associated with a value of a remote diagnostic parameter intended for a communicating electronic equipment (EEj) of a vehicle (V), a second a step in which said value is compared to a predefined value, and if there is an identity between them, a request for a remote diagnostic session is transmitted to said recipient electronic communicating equipment (EEj), a third step in which the latter (EEj) generates a response to said request, and if this response is an acceptance of said remote diagnosis session or a predefined refusal of said remote diagnostic session is transmitted said remote diagnostic request to said communicating electronic equipment (EEj), and a fourth step in which said diagnostic tool (OD) is transmitted a message generated by said communicating electronic equipment (EEj) in response to said request for remote diagnostics.
2. Procédé selon la revendication 1 , caractérisé en ce que dans ladite deuxième étape on réalise ladite comparaison dans un serveur de communication (SC) assurant une interface de communication entre ledit outil de diagnostic (OD) et le module de communication (MC) du véhicule (V) diagnostiqué, et dans ladite troisième étape on analyse ladite réponse générée par ledit équipement électronique communicant (EEj) dans ledit serveur de communication (SC), puis si ladite réponse est une acceptation de ladite session de télédiagnostic ou un refus prédéfini de ladite session de télédiagnostic, ledit serveur de communication (SC) transmet ladite requête de télédiagnostic audit équipement électronique communicant (EEj), via ledit module de communication (MC).  2. Method according to claim 1, characterized in that in said second step is performed said comparison in a communication server (SC) providing a communication interface between said diagnostic tool (OD) and the communication module (MC) of the vehicle (V) diagnosed, and in said third step said response generated by said communicating electronic equipment (EEj) is analyzed in said communication server (SC), and if said response is an acceptance of said remote diagnostic session or a predefined refusal of said remote diagnostic session, said communication server (SC) transmits said remote diagnostic request to said communicating electronic equipment (EEj), via said communication module (MC).
3. Procédé selon la revendication 1 , caractérisé en ce que dans ladite deuxième étape on réalise ladite comparaison dans ledit module de communication (MC) du véhicule (V) comprenant ledit équipement électronique communicant (EEj) destinataire de ladite requête de télédiagnostic, et dans ladite troisième étape on analyse ladite réponse générée par ledit équipement électronique communicant (EEj) dans ledit module de communication (MC), puis si ladite réponse est une acceptation de ladite session de télédiagnostic ou un refus prédéfini de ladite session de télédiagnostic, ledit module de communication (MC) transmet ladite requête de télédiagnostic audit équipement électronique communicant (EEj). 3. Method according to claim 1, characterized in that in said second step, said comparison is made in said communication module (MC) of the vehicle (V) comprising said communicating electronic equipment (EEj) receiving said remote diagnostic request, and in said third step said response generated by said communicating electronic equipment is analyzed ( EEj) in said communication module (MC), and if said response is an acceptance of said remote diagnosis session or a predefined refusal of said remote diagnosis session, said communication module (MC) transmits said remote diagnosis request to said communicating electronic equipment ( EEj).
4. Procédé selon l'une des revendications 1 à 3, caractérisé en ce que dans ladite quatrième étape, si ladite réponse à la demande de session de télédiagnostic est une acceptation de ladite session de télédiagnostic, on commence par adresser audit équipement électronique communicant (EEj) destinataire de ladite requête de télédiagnostic un message de fermeture de session de télédiagnostic, puis en cas de réception d'un message de confirmation de fermeture de cette session de télédiagnostic, on transmet audit outil de diagnostic (OD) ledit message généré par ledit équipement électronique communicant (EEj) en réponse à ladite requête de télédiagnostic, accompagné d'une valeur prédéfinie dudit paramètre de télédiagnostic.  4. Method according to one of claims 1 to 3, characterized in that in said fourth step, if said response to the request for a remote diagnostic session is an acceptance of said remote diagnostic session, it begins by addressing to said communicating electronic equipment ( EEj) recipient of said remote diagnostic request a remote diagnostic logout message, then upon receipt of a confirmation message of closure of this remote diagnostic session, said diagnostic tool (OD) is transmitted said message generated by said remote diagnosis session; communicating electronic equipment (EEj) in response to said remote diagnosis request, accompanied by a predefined value of said remote diagnostic parameter.
5. Procédé selon l'une des revendications 1 à 4, caractérisé en ce que dans ladite quatrième étape, si ladite réponse à la demande de session de télédiagnostic est un refus prédéfini de cette session de télédiagnostic, on transmet audit outil de diagnostic (OD) ledit message généré par ledit équipement électronique communicant (EEj) en réponse à ladite requête de télédiagnostic, accompagné d'une valeur prédéfinie dudit paramètre de télédiagnostic.  5. Method according to one of claims 1 to 4, characterized in that in said fourth step, if said response to the remote diagnostic session request is a predefined refusal of this remote diagnostic session, it transmits to said diagnostic tool (OD ) said message generated by said communicating electronic equipment (EEj) in response to said remote diagnosis request, accompanied by a predefined value of said remote diagnostic parameter.
6. Procédé selon l'une des revendications 1 à 5, caractérisé en ce que dans ladite deuxième étape, en cas d'identité entre ladite valeur et ladite valeur prédéfinie, on commence par vérifier si ladite requête de télédiagnostic est autorisée pour ledit équipement électronique communicant (EEj), puis, dans l'affirmative, on transmet ladite demande de session de télédiagnostic audit équipement électronique communicant (EEj). 6. Method according to one of claims 1 to 5, characterized in that in said second step, in the case of an identity between said value and said predefined value, it is first checked whether said remote diagnosis request is authorized for said electronic equipment. communicating (EEj), then, if so, transmitting said request for a remote diagnostic session to said communicating electronic equipment (EEj).
7. Système (SD) pour réaliser à distance des diagnostics de véhicules (V) comprenant chacun un module de communication (MC) propre à communiquer par voie d'ondes et couplé à des équipements électroniques communicants (EEj) embarqués, caractérisé en ce qu'il comprend i) un outil de diagnostic (OD) propre à générer une requête de télédiagnostic associée à une valeur d'un paramètre de télédiagnostic à destination d'un équipement électronique communicant (EEj) d'un véhicule (V), et ii) des moyens de traitement (MT) agencés pour comparer ladite valeur à une valeur prédéfinie, et en cas d'identité entre ces dernières pour déclencher la transmission d'une demande de session de télédiagnostic à destination dudit équipement électronique communicant (EEj), puis, en cas de réception d'une réponse à ladite demande générée par ce dernier (EEj) et représentant une acceptation ou un refus prédéfini de ladite session de télédiagnostic, pour déclencher la transmission de ladite requête de télédiagnostic audit équipement électronique communicant (EEj), afin que ce dernier (EEj) génère à destination dudit outil de diagnostic (OD) un message de réponse à ladite requête de télédiagnostic. 7. System (SD) for remotely performing vehicle diagnostics (V) each comprising a communication module (MC) capable of communicating by waves and coupled to communicating electronic equipment (EEj) on board, characterized in that it comprises i) a diagnostic tool (OD) capable of generating a remote diagnosis request associated with a value of a remote diagnosis parameter intended for a communicating electronic equipment (EEj) of a vehicle (V), and ii ) processing means (MT) arranged to compare said value with a predefined value, and in case of identity between them to trigger the transmission of a request for a remote diagnostic session to said communicating electronic equipment (EEj), then , in case of receiving a response to said request generated by the latter (EEj) and representing a predefined acceptance or refusal of said remote diagnostic session, to trigger transmitting said remote diagnostic request to said communicating electronic equipment (EEj), so that the latter (EEj) generates, to said diagnostic tool (OD), a response message to said remote diagnosis request.
8. Système selon la revendication 7, caractérisé en ce que lesdits moyens de traitement (MT) sont installés dans un serveur de communication (SC) assurant une interface de communication entre ledit outil de diagnostic (OD) et ledit module de communication (MC) du véhicule (V) diagnostiqué.  8. System according to claim 7, characterized in that said processing means (MT) are installed in a communication server (SC) providing a communication interface between said diagnostic tool (OD) and said communication module (MC). of the vehicle (V) diagnosed.
9. Système selon la revendication 7, caractérisé en ce que lesdits moyens de traitement (MT) sont installés dans ledit module de communication (MC) du véhicule (V) comprenant ledit équipement électronique communicant (EEj) destinataire de ladite requête de télédiagnostic.  9. System according to claim 7, characterized in that said processing means (MT) are installed in said communication module (MC) of the vehicle (V) comprising said communicating electronic equipment (EEj) recipient of said remote diagnostic request.
10. Système selon l'une des revendications 7 à 9, caractérisé en ce que lesdits moyens de traitement (MT) sont agencés, en cas d'identité entre ladite valeur et ladite valeur prédéfinie, pour commencer par vérifier si ladite requête de télédiagnostic est autorisée pour ledit équipement électronique communicant (EEj), puis, dans l'affirmative, pour déclencher la transmission de ladite demande de session de télédiagnostic audit équipement électronique communicant (EEj).  10. System according to one of claims 7 to 9, characterized in that said processing means (MT) are arranged, in case of identity between said value and said predefined value, to start by checking if said remote diagnosis request is authorized for said communicating electronic equipment (EEj), then, if so, to trigger the transmission of said remote diagnostic session request to said communicating electronic equipment (EEj).
EP16707866.6A 2015-02-11 2016-02-04 Method and system for carrying out a telediagnosis of communicating electronic equipements of vehicles Active EP3257027B1 (en)

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FR1551094A FR3032546B1 (en) 2015-02-11 2015-02-11 METHOD AND SYSTEM FOR REALIZING SECURE TELEDIAGNOSTICS OF COMMUNICATION ELECTRONIC EQUIPMENT OF VEHICLES
PCT/FR2016/050233 WO2016128648A1 (en) 2015-02-11 2016-02-04 Method and system for performing secure remote diagnostics of networked electronic devices of vehicles

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