EP3837434A1 - Procede de surveillance d'un systeme de motorisation de vehicule - Google Patents
Procede de surveillance d'un systeme de motorisation de vehiculeInfo
- Publication number
- EP3837434A1 EP3837434A1 EP19748585.7A EP19748585A EP3837434A1 EP 3837434 A1 EP3837434 A1 EP 3837434A1 EP 19748585 A EP19748585 A EP 19748585A EP 3837434 A1 EP3837434 A1 EP 3837434A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- period
- sub
- anomaly
- parameters
- electronic control
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/22—Safety or indicating devices for abnormal conditions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/26—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C5/00—Registering or indicating the working of vehicles
- G07C5/08—Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle or waiting time
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/26—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
- F02D41/28—Interface circuits
- F02D2041/286—Interface circuits comprising means for signal processing
Definitions
- the invention relates, in general, electronic control units, designated ECU, also designated electronic control units, in particular mounted in motor vehicles.
- the invention relates more particularly to a method for monitoring the occurrence of an anomaly in a motor vehicle, with a view to improving the quality of the electronic control units by a better understanding of faults.
- context information more generally the value of a set of predefined parameters, is continuously recorded in the electronic control unit of the vehicle.
- this information can be analyzed in order to characterize and resolve the anomaly that occurred.
- the information collected may not be sufficient, in the state of the art, to allow the analysis of certain anomalies. Indeed, the information collected, currently, gives a "photo" of the numerical values of important parameters at the time when a fault is signaled, but they do not provide information on the temporal evolution of these values in the moments preceding the signaling of the fault. In addition, the number of accessible parameters is too limited.
- the invention therefore aims to resolve these drawbacks by proposing a method for storing parameter values which can be used in the event of an anomaly, in particular for any anomaly indicated by an error code.
- the parameter values are stored when the anomaly occurs, the method making it possible to collect said parameter values in a semi-continuous mode and to store them according to a particular scheme, comprising three time periods preceding the occurrence of the anomaly, with three different sampling steps.
- the present invention relates to a method of monitoring a motorization system of a vehicle, in particular of a vehicle automotive, the motorization system comprising an electronic control unit having a volatile memory and a non-volatile memory, the monitoring method comprising:
- the value of the set of parameters is recorded in said recording sequence with a first sampling step
- the value of the set of parameters is recorded in said recording sequence with a second sampling step, greater than the first sampling step
- the value of the set of parameters is recorded in said recording sequence with a third sampling step, greater than the second sampling step
- the first sampling step is equal to 100 ms
- the second sampling step is equal to 500 ms
- the third sampling step is equal to 10 seconds.
- the first sub-period has a duration equal to 5 seconds
- the second sub-period has a duration equal to 10 seconds
- the third sub-period has a duration equal to 285 seconds, the time period having a total duration equal to 300 seconds.
- the sequence for recording the value of the set of predefined parameters also comprises the value of said set of predefined parameters for a period of time following the occurrence of the anomaly, with an equal sampling step. at the first sampling step.
- said period of time following the occurrence of the anomaly has a duration less than or equal to the first subperiod.
- the first sub-period has a duration equal to 2 seconds
- the second sub-period has a duration equal to 10 seconds
- the third sub-period has a duration equal to 347 seconds
- the period following the instant of occurrence of the anomaly has a duration equal to 1 second
- the period of time having a total duration equal to 360 seconds.
- the occurrence of the anomaly is determined by the generation of a P code by the electronic control unit.
- the step of recording the value of the set of parameters comprises erasing, in the volatile memory, the values having a seniority greater than six minutes compared to the current instant.
- the storage in the non-volatile memory of said recording sequence is carried out when the electronic control unit is stopped.
- the durations of the sub-periods and / or of the sampling steps can be calibrated.
- the present invention also relates to an electronic control unit for a motorization system of a vehicle, comprising a volatile memory and a non-volatile memory, said electronic control unit being configured to implement the method as briefly described above.
- the present invention also relates to a motor vehicle comprising such an electronic control unit.
- Figure 1 a diagram representing the chronological generation of a recording sequence, according to the invention.
- the embodiments described relate more particularly to an implementation of the sampling of data according to the invention in a motor vehicle.
- any implementation in a context different, in particular in any type of vehicle, is also covered by the present invention.
- the method according to the invention makes it possible to monitor the context information received by the electronic control unit during a period of time preceding the occurrence of an anomaly, in particular signaled by the generation of a P code.
- the electronic control unit saves in its memory data, in particular the values of a set of predefined parameters, such as context information allowing the analysis of anomalies, in other words events unwanted or feared.
- the anomalies, or undesirable or feared events are for example: the lighting of the engine warning lamp designated MIL (Malfunction Indicator Light) or the stalling of the motorization system.
- FIG. 1 represents a time line diagramming the sampling of the context data during three time periods and with different frequencies.
- the timeline begins when the motorization system 8 starts, the anomaly to be analyzed is located at instant 4.
- the values of a set of predefined parameters are continuously recorded in a volatile memory of the electronic control unit .
- a sequence of recording the value of the predefined set of parameters is performed.
- Said recording sequence comprises a sampling of the values recorded in the volatile memory of the electronic control unit. Otherwise designated, said recording sequence corresponds to a "film” making it possible to retrace the evolution of the values of said set of predefined parameters near the instant of occurrence of an anomaly.
- Said sampling extends over a period included, in Figure 1, between time 7 and time 4 at which the anomaly occurs. Said period thus precedes the instant of occurrence of the anomaly and has three successive distinct sub-periods.
- the first subperiod 1 precedes instant 4 from instant 5.
- the duration of period 1 is for example five seconds and the sampling step over said first subperiod 1 corresponds in particular to a saving of the values of the predefined set of parameters every 100 ms.
- the second sub-period 2 precedes time 5 from time 6 and in particular has a duration of ten seconds. The instant 6 is therefore in this case located thirteen seconds before the instant 4.
- the sampling step on said second subperiod 2 corresponds in particular to a saving of the values of the set of predefined parameters every 500 ms.
- the third sub-period 3 precedes instant 6 since instant 7 and lasts in particular 285 seconds.
- the instant 7 is in this case located 300 seconds before the instant 4.
- the sampling step on said third subperiod 3 corresponds in particular to a saving of the values of the set of predefined parameters every 10 seconds.
- the recording sequence - in other words the "film" - thus generated includes the evolution of the value of the set of predefined parameters over a period preceding the occurrence of the anomaly 4, with sampling steps differentiated: more data is kept in the immediate vicinity of the time of occurrence of anomaly 4.
- the recording sequence thus comprises, according to one embodiment, a 6-minute sequence during which the value of the predefined set of parameters is recorded, with sampling steps increasing with the age of the data.
- the parameter values having an age greater than 6 minutes are automatically erased from the volatile memory and replaced by more recent values.
- This recording sequence is saved in a non-volatile memory of the electronic control unit, for example during the electronic control unit, in particular when the motorization system is stopped.
- the data collected by means of said recording sequence constitutes a backup allowing the analysis of which is intended to make it possible to understand the origin of the anomaly and the manner of resolving it, if necessary.
- the recording sequence also includes the value of the set of predefined parameters recorded after the occurrence of the anomaly, over a period of time preferably less than or equal to the first sub -period, that is to say notably less than or equal to 3 seconds.
- the sampling step of the values recorded, in the recording sequence, on this period after the occurrence of the anomaly, is notably equal to the first sampling step, namely 100 ms. This allows an analysis of the anomaly over a total period of time extending on either side of the instant of occurrence of the anomaly.
- the value of the predefined set of parameters can be suspended at the last known value.
- the durations of the sub-periods and of the sampling steps can be calibrated.
- the electronic control unit begins collecting new data.
- the method according to the invention therefore has the advantage of allowing the collection of a large number of data, in order to analyze them a posteriori. Collecting the values of a set of predefined parameters over time makes it possible to more quickly understand the causes of an anomaly in order to develop appropriate solutions.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Control Of Electric Motors In General (AREA)
- Testing And Monitoring For Control Systems (AREA)
- Debugging And Monitoring (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1857521A FR3085057B1 (fr) | 2018-08-17 | 2018-08-17 | Procede de surveillance d’un systeme de motorisation de vehicule |
| PCT/FR2019/051683 WO2020035639A1 (fr) | 2018-08-17 | 2019-07-08 | Procede de surveillance d'un systeme de motorisation de vehicule |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3837434A1 true EP3837434A1 (fr) | 2021-06-23 |
Family
ID=65201101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19748585.7A Pending EP3837434A1 (fr) | 2018-08-17 | 2019-07-08 | Procede de surveillance d'un systeme de motorisation de vehicule |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3837434A1 (fr) |
| CN (1) | CN112567123B (fr) |
| FR (1) | FR3085057B1 (fr) |
| WO (1) | WO2020035639A1 (fr) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4136968C1 (fr) * | 1991-11-11 | 1992-11-12 | Mannesmann Kienzle Gmbh, 7730 Villingen-Schwenningen, De | |
| US5638273A (en) * | 1995-03-29 | 1997-06-10 | Remote Control Systems, Inc. | Vehicle data storage and analysis system and methods |
| DE19650236A1 (de) * | 1996-12-04 | 1998-06-10 | Mannesmann Vdo Ag | Verfahren zur Speicherung unfallbezogener Daten mit einem Unfalldatenspeicher |
| JP3549505B2 (ja) * | 2001-08-10 | 2004-08-04 | 本田技研工業株式会社 | データ記録装置 |
| JP4914206B2 (ja) * | 2006-12-27 | 2012-04-11 | 富士通テン株式会社 | 情報記録装置 |
| DE102013014879B4 (de) * | 2013-09-06 | 2019-11-28 | Audi Ag | Kraftfahrzeug mit einem Unfalldatenspeicher |
| JP6432490B2 (ja) * | 2015-11-20 | 2018-12-05 | トヨタ自動車株式会社 | 車載制御装置、及び、車載記録システム |
| EP3208775B1 (fr) * | 2016-02-18 | 2024-03-06 | Deutsche Telekom AG | Enregistrement de données de fonctionnement dans un véhicule automobile |
-
2018
- 2018-08-17 FR FR1857521A patent/FR3085057B1/fr active Active
-
2019
- 2019-07-08 CN CN201980054086.7A patent/CN112567123B/zh active Active
- 2019-07-08 EP EP19748585.7A patent/EP3837434A1/fr active Pending
- 2019-07-08 WO PCT/FR2019/051683 patent/WO2020035639A1/fr not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| FR3085057B1 (fr) | 2021-08-06 |
| CN112567123A (zh) | 2021-03-26 |
| WO2020035639A1 (fr) | 2020-02-20 |
| FR3085057A1 (fr) | 2020-02-21 |
| CN112567123B (zh) | 2022-12-23 |
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