EP0071523A1 - Procédé et dispositif pour contrôler l'état d'un véhicule automobile - Google Patents

Procédé et dispositif pour contrôler l'état d'un véhicule automobile Download PDF

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Publication number
EP0071523A1
EP0071523A1 EP82401361A EP82401361A EP0071523A1 EP 0071523 A1 EP0071523 A1 EP 0071523A1 EP 82401361 A EP82401361 A EP 82401361A EP 82401361 A EP82401361 A EP 82401361A EP 0071523 A1 EP0071523 A1 EP 0071523A1
Authority
EP
European Patent Office
Prior art keywords
tests
vehicle
motor vehicle
recorder
time intervals
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP82401361A
Other languages
German (de)
English (en)
French (fr)
Inventor
Philippe Bottiau
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.)
FCI France SA
Original Assignee
Souriau et Cie
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 Souriau et Cie filed Critical Souriau et Cie
Publication of EP0071523A1 publication Critical patent/EP0071523A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/08—Safety, indicating, or supervising devices
    • F02B77/083—Safety, indicating, or supervising devices relating to maintenance, e.g. diagnostic device
    • 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

Definitions

  • the present invention relates to methods and devices for controlling the state of a motor vehicle by taking information at the level of the main vital elements of the vehicle.
  • the car is brought to one of these centers and numerous tests are carried out to deduce the quality of the car's condition, and possibly detect faults that could occur, in order to advise the owner of the vehicle to remedy the possible failures before an incident occurs.
  • the information collected at the time of the tests in these specialized centers is only the image at a given moment of the state of the car and it may be, that certain incidents which occurred very shortly before the carrying out of these tests, have a consequence which can even be important on the state of the car at an instant which will be just after that at which the car was checked.
  • the object of the present invention is to tend to overcome these drawbacks and to implement a method for monitoring the condition of a motor vehicle which gives much more safety than those of the prior art.
  • the present invention also aims to provide a device specially adapted for the implementation of the method mentioned above.
  • the present invention relates to a device for implementing the above defined methods comprising a plurality of sensors capable of delivering signals representative of the state of the vital elements of a motor vehicle, a recorder whose inputs are connected to said sensor said recorder being able to be controlled to record at a given instant the value of the signals, means for controlling the recorder and ' output means of said recorder able to deliver information representative of the signals recorded in said recorder.
  • a motor vehicle comprising a combustion engine
  • This motor vehicle is able to be driven and to move to travel for a certain number of kilometers.
  • the taking of information from sensors placed at determined locations is ordered periodically so that it is saved in permanent memory.
  • the information that has been recorded can be taken directly from the memory and transported electrically to analysis devices.
  • control centers include tools which are generally more sophisticated than those which can be loaded. that on board these vehicles, other more complete tests will be carried out and compared with all of the pre-recorded tests while the vehicle was driving or was ready to run and, in this case, the condition of the vehicle can be determined with much more precision.
  • the single figure represents a very simplified embodiment of a device making it possible to implement the method which has just been described above.
  • This figure very schematically represents a vehicle 1 comprising a chassis 2, mounted on wheels 3, as well as a combustion engine 4, on which appear the ignition control means 5, the coolant reservoir 6 as well as that of the lubrication fluid
  • the device more particularly comprises a plurality of sensors, in particular a sensor 8 of the temperature of the coolant, a sensor 9 of the electrical intensity of ignition control, a sensor 10 of the timing of the ignition advance. , and a sensor 11 of the pressure of the lubrication fluid.
  • All the outputs of these sensors 8 to 11 are connected to the input 12 of a permanent memory 13 comprising a control input 17 for storing in memory.
  • This input 17 is connected to the output 15 of a control means 16 which can be a clock delivering periodic signals, but, as said previously, advantageously, an odometer.
  • This permanent memory 13 optionally includes output means 14 which allow the information recorded periodically to be taken from this memory or even the medium to be taken out, on which this information has been recorded, in order to transport it to a place where the information that it contains could be more conveniently analyzed.
  • each sensor delivers a continuous signal representative of the state of the element to be tested and monitored.
  • the signals emitted by these sensors are constantly compared with reference values which are representative, at least possibly over a certain range, of the signals that the sensors should emit when the elements they test are in correct or functioning states.
  • this comparison detects a determined difference between the signal delivered by at least one sensor and its reference value, it then commands the recording of this fault signal, possibly even of all the other signals emitted by the sensors.
  • the time interval will therefore be determined by at least the failures detected by a sensor. It is quite obvious that these recordings will be carried out over a fairly long period, and each time that a sensor will be delivered a signal corresponding to a fault or a failure of one of the elements of the engine, the recording of the data will be ordered in order to be stored, at least temporarily, so that it can be analyzed and studied later.
  • an acceptable failure rate can be determined.
  • the number of failures is totaled and memorized, and, after a certain number of kilometers traveled by the vehicle, this number is compared with an acceptable rate of reference failures. In this case, two solutions may appear.
  • FIG. 2 represents an embodiment of a device making it possible to implement the method which has just been described above.
  • three sensors 8, 9, 10 deliver at their outputs signals which are sent respectively by links 21, 22, 23 respectively to the inputs 24, 25, 26 of three comparators 27, 28, 29 and to the three entries 30, 31, 32 of a memory 33.
  • the three comparators 27,28,29 each have at least one input 34,35,36 to which signals representative of a correct value of a state of the element with which the sensors which deliver signals respectively can be applied on the links 21,22,23.
  • the outputs 37, 38, 39 respectively of the comparators 27, 28, 29 are connected for example to three inputs 40, 41, 42 of a logic gate 43 of the OR type.
  • the output 44 of this logic gate 43 is connected
  • a memory storage recording command 33 which can be of any type, magnetic, optical, etc.
  • the outputs 37, 38, 39 of the comparators 27, 28, 29 are connected to the inputs 46, 47, 48 of a multi-totalizer 49 making it possible to total the number of pulses which will be emitted at the outputs of the three comparators previously mentioned.
  • This totalizer 49 is a totalizer of the type making it possible to add the number of signals which are received on these inputs 46,47,48 and to keep this in memory.
  • the totalization outputs 50,51,52 are respectively connected to the inputs 53,54,55 of a multi-comparator 56 receiving on its comparison inputs 57,58,59 reference signals representing predetermined totalization values.
  • the outputs 60, 61, 62 of this multi-comparator 56 are connected to the inputs 63 of a second logic gate 64 of the OR type, the output 65 of which is connected to a control input 66 of the memory 33.
  • This logic gate 64 can deliver at its output at least one signal which can take two states, these two states applied to the input 66 allows, either to carry out a definitive recording of the previously memorized signals, sent on the inputs 30, 31, 32 , or to erase and reset this memory.
  • the device finally comprises, in addition, in this embodiment, an odometer 70 whose output 71 is connected, on the one hand, to a comparison control input 72 of the comparator 56, and to an input 73 for control of transfer and reset of the multi-totalizer 49.
  • the sensors continuously deliver signals which are sent on the links 21,22,23 and therefore cons applied to the inputs of the three comparators 27,28,29, as well as to the inputs 30,31,32 of memory 33.
  • one of the comparators When one of the comparators detects an anomaly of at least one of the signals, one of these delivers at its output a signal which will, on the one hand, be counted unitarily in the multi-totalizer 49, and, d on the other hand, sent through the logic gate OR to the temporary memory command input 45, and, therefore, the signals from the sensors, when these faults have been detected, will be temporarily stored in memory 33.
  • This process is repeated as many times as failures are detected, each failure being totaled in the multi-totalizer 49.
  • the odometer 72 delivers at its output 71, when the car has traveled a certain number of kilometers, an order signal which will be applied both to the totalizer 49 to transfer all the numbers totaled therein to the comparator 56 and for that these signals are then compared
  • an order signal will be sent to at least one of the outputs 60,61,62 which, through logic gate 64, will command final storage.
  • the logic gate delivers a signal which, according to its state, applied to the input 66 of the memory 33, commands the erasure of this and its reset. In fact, this condition is interpreted as showing that the failures that have been detected are random and not significant in determining a potential poor condition of the motor vehicle engine.
  • the comparator 56 delivers on at least one of its inputs a signal which constitutes a confirmation of the prerecorded information. Because these are then considered to be significant of a potential poor state of the engine. These can then be analyzed, interpreted and studied in a static location, possibly even by comparison with other complementary tests that can be performed there.
  • sensors associated with the secondary winding of the ignition coil of the engine there may be mentioned sensors associated with the secondary winding of the ignition coil of the engine, an engine speed sensor, a point of advance sensor at the ignition in comparison for example with a sensor of the angular position of the crankshaft, a sensor of the depression of the engine on the level for example of the carburetor, etc.
  • the methods and devices described above make it possible to rationally exploit the result of static and dynamic tests by minimizing to improve the diagnostics of motor vehicles, and by minimizing their downtime while increasing the safety of these vehicles since faults will be detected as soon as they appear and, therefore, accidents which would be the consequences of these faults can thus be avoided.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Time Recorders, Dirve Recorders, Access Control (AREA)
EP82401361A 1981-07-30 1982-07-22 Procédé et dispositif pour contrôler l'état d'un véhicule automobile Withdrawn EP0071523A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8114848 1981-07-30
FR8114848A FR2510756A1 (fr) 1981-07-30 1981-07-30 Procede et dispositif pour controler l'etat d'un vehicule automobile

Publications (1)

Publication Number Publication Date
EP0071523A1 true EP0071523A1 (fr) 1983-02-09

Family

ID=9261014

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82401361A Withdrawn EP0071523A1 (fr) 1981-07-30 1982-07-22 Procédé et dispositif pour contrôler l'état d'un véhicule automobile

Country Status (2)

Country Link
EP (1) EP0071523A1 (xx)
FR (1) FR2510756A1 (xx)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0309346A1 (fr) * 1987-09-25 1989-03-29 Applications Electroniques Techniques Avancees "A.E.T.A." Système de surveillance de paramètres d'un véhicule motorisé, notamment du moteur de ce véhicule
FR2640559A1 (fr) * 1988-12-20 1990-06-22 Renault Systeme de support de donnees pour vehicule
FR2673244A1 (fr) * 1991-02-21 1992-08-28 Jeoffroy Jean Pierre Dispositif et procede de controle du circuit de refroidissement des moteurs a combustion interne.
EP0629773A1 (de) * 1993-06-18 1994-12-21 Bayerische Motoren Werke Aktiengesellschaft Diagnoseverfahren für Kraftfahrzeuge zum Überprüfen elektronisch gesteuerter Systeme
KR101125493B1 (ko) * 2007-10-03 2012-03-20 퀄컴 인코포레이티드 이중 경로 전류 증폭기
CN112983644A (zh) * 2021-04-16 2021-06-18 杭州科技职业技术学院 一种基于神经网络的发动机故障诊断装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1298627A (en) * 1970-03-20 1972-12-06 Vdo Schindling An operational monitoring system for aircraft
US4093939A (en) * 1976-02-18 1978-06-06 Transputer (Proprietary) Limited Accessory for a vehicle for monitoring its operation and that of its drive means
US4246566A (en) * 1978-05-09 1981-01-20 Nippondenso Co., Ltd. Malfunction diagnosing apparatus for electronic control system for vehicles

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1298627A (en) * 1970-03-20 1972-12-06 Vdo Schindling An operational monitoring system for aircraft
US4093939A (en) * 1976-02-18 1978-06-06 Transputer (Proprietary) Limited Accessory for a vehicle for monitoring its operation and that of its drive means
US4246566A (en) * 1978-05-09 1981-01-20 Nippondenso Co., Ltd. Malfunction diagnosing apparatus for electronic control system for vehicles

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SCHIP EN WERF, vol.42, janvier 1975, Rotterdam (NL) *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0309346A1 (fr) * 1987-09-25 1989-03-29 Applications Electroniques Techniques Avancees "A.E.T.A." Système de surveillance de paramètres d'un véhicule motorisé, notamment du moteur de ce véhicule
FR2621122A1 (fr) * 1987-09-25 1989-03-31 Applic Electro Tech Avance Systeme de surveillance de parametres d'un vehicule motorise, notamment du moteur de ce vehicule
FR2640559A1 (fr) * 1988-12-20 1990-06-22 Renault Systeme de support de donnees pour vehicule
EP0378945A1 (fr) * 1988-12-20 1990-07-25 Regie Nationale Des Usines Renault Système de support de données pour véhicule
FR2673244A1 (fr) * 1991-02-21 1992-08-28 Jeoffroy Jean Pierre Dispositif et procede de controle du circuit de refroidissement des moteurs a combustion interne.
EP0629773A1 (de) * 1993-06-18 1994-12-21 Bayerische Motoren Werke Aktiengesellschaft Diagnoseverfahren für Kraftfahrzeuge zum Überprüfen elektronisch gesteuerter Systeme
KR101125493B1 (ko) * 2007-10-03 2012-03-20 퀄컴 인코포레이티드 이중 경로 전류 증폭기
CN112983644A (zh) * 2021-04-16 2021-06-18 杭州科技职业技术学院 一种基于神经网络的发动机故障诊断装置
CN112983644B (zh) * 2021-04-16 2022-04-19 杭州科技职业技术学院 一种基于神经网络的发动机故障诊断装置

Also Published As

Publication number Publication date
FR2510756B1 (xx) 1983-12-30
FR2510756A1 (fr) 1983-02-04

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Inventor name: BOTTIAU, PHILIPPE