FR2977686A1 - Self-diagnosis method for car, involves analyzing result to establish diagnosis on functional state of actuator and/or tested sensor, and transmitting diagnosis established by information equipment in direction of driver of vehicle - Google Patents

Self-diagnosis method for car, involves analyzing result to establish diagnosis on functional state of actuator and/or tested sensor, and transmitting diagnosis established by information equipment in direction of driver of vehicle Download PDF

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Publication number
FR2977686A1
FR2977686A1 FR1156144A FR1156144A FR2977686A1 FR 2977686 A1 FR2977686 A1 FR 2977686A1 FR 1156144 A FR1156144 A FR 1156144A FR 1156144 A FR1156144 A FR 1156144A FR 2977686 A1 FR2977686 A1 FR 2977686A1
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France
Prior art keywords
vehicle
diagnosis
driver
actuator
sensor
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FR1156144A
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French (fr)
Inventor
Smet Bernard De
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PSA Automobiles SA
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Peugeot Citroen Automobiles SA
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Priority to FR1156144A priority Critical patent/FR2977686A1/en
Publication of FR2977686A1 publication Critical patent/FR2977686A1/en
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    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B9/00Safety arrangements
    • G05B9/02Safety arrangements electric
    • GPHYSICS
    • G07CHECKING-DEVICES
    • G07CTIME 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
    • G07C5/00Registering or indicating the working of vehicles
    • G07C5/008Registering or indicating the working of vehicles communicating information to a remotely located station

Abstract

The method involves executing testing of checking of a functional state of an actuator and/or a sensor embedded in a vehicle to obtain a result by controlling activation of control of the actuator when requested, and controlling operation of the actuator by an individual request or checking relevance of information indicated by the sensor. The result is analyzed to establish diagnosis on the functional state of the actuator and/or the tested sensor. The diagnosis established by an information equipment is transmitted in direction of a driver of the vehicle. An independent claim is also included for a self-diagnosis system embedded on a terrestrial vehicle i.e. car.

Description

SYSTEM AND METHOD FOR INTERACTIVE SELF-DIAGNOSTIC ONBOARD, INDEPENDENT OF A LAND VEHICLE
The invention is in the field of self-diagnosis of on-board components of a vehicle, for example a motor vehicle. The invention relates to a system and method for electrical self-diagnosis of on-board components of a vehicle. Today, vehicles have a large number of on-board components such as sensors and actuators. There is currently no simple way for the driver of a vehicle to know the functional status of the vehicle or to understand an anomaly he has detected. There are portable diagnostic systems that some garages are equipped with. The control of the vehicle in these garages will generate a certain cost for the user for a result that is not always complete. The only complete diagnosis of the vehicle is made in the final factory, and requires the use of external devices to the vehicle. On-board self-diagnosis methods and systems already exist, but these usually focus on the detection of problems related to dynamic vehicle functions and driving problems such as, for example, water temperature, combustion, couple etc ....
Thus the document US2001 / 0016790 proposes an on-board self-diagnostic system of the dynamic functions of the vehicle, informing the driver of any anomalies in the parameters related to the driving of the vehicle and the smooth running of the test. The document US2007 / 0093947 relates to an onboard self-diagnostic system, initialized at the request of the driver. The proposed system will provide pre-recorded audio explanations of the detected fault, its severity and the procedure to follow. He may also contact a satellite service center or radiocommunication. There is therefore currently no system or method for controlling the functional state of the organs (actuators and sensors) of a vehicle autonomously, that is to say without calling upon a mechanic or specific external equipment. The invention seeks to find a solution to the problems encountered in the prior art by proposing a method and a self-diagnosis system of a vehicle to assist a driver in the maintenance of his vehicle by improving its autonomy in the analysis of the functional state of his vehicle. To this end, the subject of the invention is a method for self-diagnosis of a land vehicle, preferably of a motor vehicle, by a self-diagnosis system embedded on said vehicle, said method being remarkable in that it comprises the following steps: - performing at least one test for checking the functional state of at least one actuator and / or at least one sensor embedded in said vehicle so as to obtain a result, the one or more tests using at least one of the following operations: a) control of the activation of the command of said actuator when it is requested, b) control of the operation of said actuator by individual request, c) control of the relevance of the information indicated by said sensor, - analyzing the result of the test or tests so as to establish a diagnosis of the functional state of the actuators and / or the sensors tested, and - transmission of the diagnosis established by an information device in the direction of a driver of the vehicle. Preferably the self-diagnosis system is autonomous. More preferably, the test for checking the functional state of at least one actuator and / or at least one sensor embedded in said vehicle is an electrical test. According to a preferred embodiment of the invention, at least one test for checking the functional state of at least one actuator and / or at least one sensor embedded in said vehicle takes place while the vehicle engine is not running. provides no work.
Preferably, the relevance of the information indicated by at least one sensor is checked in response to an action by the driver of the vehicle on said sensor. Preferably, the method further comprises the following steps: - transmission of a request for action on a sensor towards the driver, - verification that the action was performed by reading the sensor and analyzing the result for the purpose of establishment of a diagnosis, - possibly in the event of excessive deviation of the information read from a pre-recorded reference value, request a confirmation that the requested action has been carried out, a new reading of the sensor and analysis the result upon receipt of confirmation by the driver or after a specified period of time for the purpose of establishing a diagnosis. Optionally, at least one operation control operation of at least one actuator comprises a verification of its consumption of electrical energy, preferably this verification is performed by comparison with a prerecorded reference value. Advantageously, the method further comprises the following steps: - execution of at least one control test of the dynamic functions of the vehicle; - analysis of the result in order to establish a diagnosis; - transmission of the diagnosis established in the direction of the driver; and / or the following steps: - performing at least one control test of the data relating to the rolling of the vehicle; - analysis of the result in order to establish a diagnosis; - transmission of the diagnosis established in the direction of the driver.
Optionally, it includes an initial step of establishing one or more lists of actuators and / or sensors to be tested, the list or lists containing all or part of the actuators and / or sensors embedded in the vehicle, and in that that the control tests are performed on the sensors and / or actuators listed. Preferably, the list associated with the test for checking the functional status of at least one actuator and / or at least one on-board sensor is different from the list associated with the test for checking the dynamic functions of the vehicle and / or the list associated with it. to the control test of the data relating to the rolling of the vehicle. The invention also relates to a self-diagnostic system on board a land vehicle, preferably an automobile, having at least one electric battery, said system comprising: an electronic control unit having a memory, a set of networked computers with said electronic control unit, - a set of sensors that can be read by the computers and / or the electronic control unit, - a set of actuators that can be activated by the computers and / or the electronic control unit, an information device connected to the electronic control unit for the transmission of information and / or messages towards a driver of the vehicle, said system being remarkable in that it is configured to implement the self-diagnostic method as defined further in order to perform at least one functional check of at least one sensor and / or at least one less an actuator embedded in said vehicle, preferably the electronic control unit is configured to control the execution of the test or tests to at least one computer, to receive the diagnosis established by said computer and to transmit said diagnosis to the driver by means of information equipment.
Preferably, the self-diagnosis system is autonomous. More preferably, the test for checking the functional state of at least one actuator and / or at least one sensor embedded in said vehicle is an electrical test. According to a preferred embodiment of the invention, the system furthermore has a current sensor and is configured to measure the intensity of the current delivered by the vehicle battery when an actuator is requested and to compare this measurement with a value reference stored in memory for the purpose of establishing a diagnosis relating to the consumption of electrical energy of said actuator.
Advantageously, the electronic control unit is further configured to keep in memory the mileage presented by the vehicle during the implementation of the self-diagnosis method of the vehicle, and it is further configured to transmit, by means of the information equipment, in the direction of the driver an incentive message to renew the implementation of said control of the functional state of the vehicle when the mileage of the vehicle has been incremented by a predefined number of kilometers. Preferably, the electronic control unit is further configured to maintain a diagnostic performed in memory when the diagnosis finds a failure of an actuator (9) and / or a sensor (7) and to transmit said diagnosis in the direction of the driver by means of the information equipment whenever the ignition of the vehicle is
Finally, the invention relates to a vehicle having such a system of autodignostic.
It will be understood that the implementation of the invention consists in offering a driver the possibility of checking whenever he wishes the functional state of his vehicle, and / or to understand the anomaly he has detected during the previous use he made. According to a first aspect, the invention is remarkable for its autonomy. Indeed, the invention consists in offering the driver the possibility of carrying out a complete control of his vehicle independently, that is to say without using a device external to the vehicle or a specialized mechanic. The vehicles concerned by the invention are land motor vehicles preferably motor vehicles.
According to a second aspect, the invention consists in determining the functional state of a vehicle of all or some of the sensors and / or actuators on board by an electrical test. Advantageously, controls on the dynamic operation and running of the vehicle can also be performed. The invention is also remarkable in that it will transmit the diagnosis established to the driver in order to alert him of the potential risk associated with the anomalies possibly detected and to encourage him to take the necessary steps concerning the maintenance of his vehicle. . The invention is remarkable in that it gives the driver the ability to anticipate a failure situation and thus avoid it. The invention is particularly advantageous in that it can be implemented by using means already present in the vehicles, namely the organs used for the operation of embedded systems and configured for the implementation of the invention. According to a third aspect, the invention is remarkable for its interactivity. Indeed, the driver participates in the test operations by acting on the sensors that he is responsible for when using his vehicle, for example the driver can be brought as part of the controls to fully press on the pedal. accelerator to test the sensor associated with said pedal. The interactivity of the system and method according to the invention makes it possible to perform tests that were not performed in the known autonomous self-diagnostic systems.
The invention will be well understood and other aspects and advantages will become apparent from the following description given by way of example with reference to the accompanying drawings in which: FIG. 1 shows an example of a system according to FIG. FIG. 2 presents a logic diagram showing an exemplary implementation of the method according to the invention.
Referring first to Figure 1 showing a system (1) for self-diagnosis of the functional state of a vehicle according to the invention. The system (1) according to the invention is remarkable in that it is embedded in the vehicle and is autonomous, that is to say that it does not require the use of an external device to perform the diagnosis the functional state of said vehicle. It advantageously comprises a BSI (Intelligent Servitude Box) or Electronic Control Unit (ECU) (3) which is at the heart of the electronic and electrical architecture of the vehicle and at least one and preferably a plurality of computers (5). . LUCE (3) communicates with the computers (5) by means of a multiplex network embedded on the vehicle. The system (1) will make it possible to carry out a check of the functional state of all or part of the sensors (7) and / or the onboard actuators (9) as well as their controls. The term "sensor" means any device that converts a physical quantity into an electrical signal. In known manner, the sensors (7) are read by the computers (5) and / or the ECU (3) and therefore constitute an information input. The sensors can generate information corresponding to a variable value such as a temperature sensor, a pressure sensor or a sensor associated with an accelerator or brake pedal. They can also generate binary information of the "all or nothing" (TOR) style as is the case for the sensor associated with a clutch pedal. The signal emitted by a sensor may have a multiplicity of shapes. For example, it can be analog, be in the form of electrical pulses of variable width or be characterized by a certain frequency. A control of the functional state of a sensor (7) is a test of relevance of the information that can be read on said sensor. For example, a measurement of the temperature of the oil can not give a negative temperature if, on the other hand, the temperatures measured by the other temperature sensors are above 20 ° C. The term "actuator" means any organ that converts the electrical energy supplied to it into a work that is useful for performing tasks. The actuators (9) are electrically controlled by the computers (5) and / or by the ECU (3). Control of the control of an actuator (9) will therefore be a test for determining whether the electrical energy reaches said actuator (9). Such a test makes it possible, for example, to determine whether there is indeed an output at the computer (5) or the ECU (3) or if there is a fault in the electrical harness. A check of the functional state of an actuator makes it possible to check if it carries out well the work which was commanded to him. Examples of actuators in a vehicle are a solenoid valve, a motorized throttle, any motor, for example a wiper mechanism or a headlight bulb. The control of the functional state of the actuators makes it possible in particular to verify that each of the actuators is capable of reaching the maximum values expected of it. For this purpose, an actuator is electrically activated by a computer which will then verify that the actuator has performed the ordered work by reading the position sensor associated with said actuator. "Diagnosis" means the conclusion following the analysis of the measurements carried out as part of the control tests. When no failure is found, the information sent to the driver is general information concerning all diagnoses made. When a failure is noted, the diagnosis concerning the failing organ is transmitted to the driver. This diagnosis preferably includes the identification of the test organ, the failure found and possibly the steps to be taken to remedy or complete the diagnosis. The self-diagnosis system (1) according to the invention also comprises an information equipment (11) intended for the driver of the vehicle and which can be driven by the ECU (3). This equipment (11) makes it possible to inform the driver: - of the actions that he must carry out during the course of the control test with a view to establishing a diagnosis, - of the state of progress of the test process, 25 - the established diagnosis. Preferably said information equipment (11) is disposed on the dashboard of the vehicle. It includes a display (for example a screen) and possibly a loudspeaker for broadcasting pre-recorded audio messages, such as the instruction to fully depress the brake pedal.
The autonomous self-diagnosis method implemented by the system (1) according to the invention comprises at least one test for checking the functional state of the vehicle, and in establishing a diagnosis based on the results of these tests. for transmission to the driver. Preferably, it also comprises at least one test of the dynamic functions of the vehicle and a control test of the driving conditions of said vehicle. In a first step the ECU (1) will establish the list of sensors (7) and / or actuators (9) to be tested in response to the request to establish a self-diagnosis of the vehicle performed by the driver. This list can be predefined and stored in the ECU (3). This list includes all or part of the sensors (7) and / or actuators (9) embedded in the vehicle. Different lists can be established according to the tests carried out. Thus, a first list will correspond to the electrical tests performed as part of a static diagnosis of the vehicle, another list will be related to the sensors and / or actuators tested in the context of a dynamic diagnosis of the vehicle and a third list of sensors and / or actuators will be tested as part of a rolling diagnosis. It will be understood that it is possible for a sensor or an actuator to participate in the establishment of several diagnoses and thus be part of several lists. According to the invention, the driver can choose to perform one or more of the proposed diagnoses (static, dynamic, rolling) for example by selecting in a menu or by validating the execution of the following diagnosis when the previous one is completed as illustrated on the logic diagram shown in Figure 2. The list of sensors (7) and / or actuators (9) to be tested is set accordingly. Similarly it is possible to provide more or less complete diagnostics of the vehicle. For example, it is possible to allow the driver to establish either a complete diagnosis of his vehicle or to test only certain functions of the vehicle such as wiping if the driver has found a fault and only wants to diagnose this function. The term "static diagnosis" means the establishment of a diagnosis in response to at least one electrical test on at least one sensor and / or an actuator. In the majority of cases, the tests are carried out when the vehicle is stopped, when the ignition is switched on but the engine has not been started. When establishing the static diagnosis the vehicle engine does not perform any work, so it is immobile. The static diagnosis will test the sensors and / or the actuators, one by one, piece by piece. This is not the result of the functioning of the organ that is tested but the organ itself. Note however that some sensors and / or actuators such as the engine speed sensor, or the wheel speed sensor, require that the vehicle engine is activated or the vehicle is running. The execution of the tests concerning the functional state of such sensors and / or actuators are therefore postponed when the engine is activated or when the vehicle is driving. They are therefore carried out when the tests concerning the dynamic and rolling functions of the vehicle are carried out. The tests performed in the context of the establishment of a static diagnosis include at least one of the following operations: - control of the activation of the commands of the actuators (9) listed when they are requested, - control of the operation of the actuators ( 9) listed by individual solicitation of each of them, - checking the relevance of the information indicated by the sensors (7) listed. The term "dynamic diagnostics" (or diagnosis of the dynamic functions of the engine) means the establishment of a diagnosis in response to at least one test to verify the proper functioning of the engine of the vehicle, namely whether it is capable of perform the job correctly. The tests carried out the engine running but at the stop of the vehicle. The tests carried out make it possible to determine, for example, the nature of its emissions, the temperature of the water, the oil, etc.
The term "rolling diagnosis" means establishing a diagnosis in response to at least one test making it possible to check the running conditions of a vehicle. These tests are performed while the vehicle is running. These tests allow for example to know the measurement of the speed of the wheels, the primary shaft, etc. Note that there are already vehicles offering dynamic diagnostics and rolling. The establishment of such diagnostics and related tests are known to those skilled in the art and will therefore not be detailed herein. The invention consists in testing the advantages of sensors (7) and / or actuators (9) by a series of additional tests making it possible to establish a static diagnosis. The invention also consists in carrying out additional tests on the sensors (7) and / or actuators (9) already tested previously in the context of the establishment of dynamic diagnostics and rolling. In addition, the driver's participation in the tests makes it possible to test sensors (7) and / or actuators (9) that could not be tested otherwise. Once the list of sensors (7) and / or actuators (9) has been established or selected, the ECU (3) will command the execution of the functional status check tests of the elements listed. The control of the execution of the tests can be carried out in different ways. According to a preferred embodiment of the invention, all the requests for activating the actuators (9) or reading the sensors (7) are managed by the ECU (3). LUCE (3) will request the execution of these requests to the different computers (5). It is therefore the computers (5) that will perform the control tests by reading the state of the sensors (7) and / or by activating said actuators (9) and / or by verifying that the control of said actuators is activated. The computers (5) will then analyze the result of the tests in order to establish a diagnosis concerning the functional state of the sensors (7) and / or the actuators (9) that they have tested. Preferably, the control of the functional state of an actuator also comprises the control of the activation of its control. They transmit this diagnosis to the UCE (3), which translates it into information intended for the driver and transmits it to him via the information equipment (11). Preferably the transmitted information contains the list of all the failures found.
Different procedures concerning the requests can be envisaged within the framework of the invention. Thus, it is possible for the ECU (3) to send the requests to the different computers (5), sensor by sensor and / or actuator by actuator. The calculators (5) will then send the UCE (3) a response for each of the tests performed. It is also possible for the ECU (3) to send a simple test request to each of the computers (5) which will each test the set of sensors (7) and / or computers (9) which they manage and send back each. an overall result at the UCE (3). This way of doing things is advantageous in that all the tests can be performed at the same time by each of the computers (5).
According to a preferred embodiment of the invention, the electrical tests carried out as part of the establishment of a static diagnosis also include at least one test for measuring the intensity of current delivered by the battery. These tests are performed using a current sensor. An example of a current sensor that can be used in the context of the invention is a housing located at the battery to calculate its state of charge. These current sensors are known to those skilled in the art and will not be detailed further. These current intensity measurement tests make it possible to control the functional state Zo of actuators that would not be tested otherwise and / or to refine the diagnosis concerning certain actuators. Thus a test to implement a current intensity measurement allows for example to check whether a bulb is burned or not or if the engine of a window lifter system works. Indeed, in the case of a burned-out bulb or in the event of a short-circuit in one of the on-board electric motors, the intensity measurement will be zero. It also makes it possible to check whether the current consumption is the expected consumption by comparing it with a reference value kept in memory. For example, with regard to the de-icing of a rear window, the invention makes it possible on the one hand to verify that the activation command is indeed carried out and on the other hand that the electrical energy consumption is that which is expected. It can therefore be seen how the invention makes it possible to go further than the systems and devices already known for the self-diagnosis of the functions and components of a vehicle. We also see the advantage presented by the invention which makes it possible to perform a static test that is to say a room-by-piece inspection of the vehicle's on-board systems. Thus, when a dynamic function fails, it becomes possible thanks to the invention for a driver to determine at which organ the failure is located since all the points involved in the execution of this function are individually tested. . Advantageously, the system (1) can use the diagnostic functions already present in a vehicle to put them into action within the framework of a predefined self-diagnostic cycle. Some of these functions currently respond to a diagnostic request issued by a tool external to the vehicle and when a diagnostic request is issued will cause the activation of an actuator (for example, power-on request the heated bezel, or the dipped beam headlamps, or the rotation of the Moto-fan (GMV) unit). The use of the diagnostic functions already present in said vehicle facilitates the implementation of the system (1) according to the invention and its implementation. Another advantage of the invention is presented by the information given to the driver. As already indicated, dynamic and driving functions are often already tested on current vehicles. Nevertheless, the result of the analyzes carried out, the diagnosis, is generally not transmitted to the driver or little exploited. For example it is transmitted in the form of an indicator light on the dashboard without further details. The invention is remarkable in that it offers the driver a perfect transparency on the state of the vehicle and will clarify what is the nature of a problem reported or not by a light. For example, it is known to test tire pressure as part of the analysis of the dynamic or rolling functions normally performed by the ECU (3). The invention makes it possible to transmit this information to the driver. Thus, when the driver performs a self-diagnosis of his vehicle according to the system (1) and the method of the invention, he will be able to receive the information that one of his tires is over or under inflated without having to go to a garage to perform this check. The information displayed to the driver regarding the diagnosis is preferably stored in memory at the request of the driver. This allows him to refer to it later. It is also possible to consider, in the event of a failure, the systematic display of a reminder of this failure to the attention of the driver to encourage him to solve the problem encountered for example by going to a car mechanic . Indeed, the invention for determining the functional state of the bodies piece by piece, it can inform the driver of the failure of a part before it causes damage to other parts cooperating with that- this and the alteration of the dynamic functions of the vehicle. This display of recall of the detected failures can be done for example every time the contact is put. When this fault has been remedied, the driver will carry out a new self-diagnosis of his vehicle. The failure is no longer found, the reminder message will no longer be displayed. This is particularly advantageous for the driver who can thus verify that the measures taken to solve a problem encountered on his vehicle have given the expected result. As we saw above the driver is asked for the establishment of the static diagnosis. The system according to the invention is therefore configured to transmit to the driver a series of instructions concerning operations that he must perform to enable the establishment of diagnostics on certain organs. Thus, for example, to test the sensor associated with the accelerator pedal, the system will ask the driver to fully press the accelerator pedal. This test is performed advantageously while the vehicle engine is not running but the ignition is on. The system will then be able to check the relevance of the information measured on said sensor, and proceed to the next test. When the value read on the sensor has an excessive deviation from the expected value, the system is configured to ask the driver for confirmation that the requested action has been performed before concluding a sensor failure. For example, the driver may be asked to confirm that he is pressing the accelerator pedal fully or repeating the action. When the driver confirms that he is performing the requested action or when he is performing the requested action, the diagnosis is then made and the system proceeds to the next test. If, after a given lapse of time, there is no confirmation from the driver and / or excessive deviation is still detected, a diagnosis may be made and the system will proceed to the next test. Since the system (1) and the method according to the invention require the participation of the driver, the start of the self-diagnosis is voluntary and must be activated by the driver when he wants to perform the tests and establish the diagnosis of his vehicle . For this purpose, the system (1) comprises an activation means for initiating the implementation of the self-diagnostic method. This activation means is preferably located at the dashboard of the vehicle. Preferably a command is also provided to allow it to interrupt the course of the test, if for example, it was triggered by mistake or if the driver changes his mind. It will then be transmitted to the driver a partial diagnosis of his vehicle corresponding to the analyzes already carried out.
It is also possible to configure the system (1) according to the invention so that it regularly suggests the driver to perform a self-diagnosis of his vehicle. For example, such a suggestion may be issued based on the number of kilometers traveled since the last self-diagnosis. To do this, the system is configured to keep in memory, for example in the memory of CHIP (3), the mileage presented by the vehicle during the implementation of the self-diagnosis method of the vehicle. The system is then configured to transmit to the driver via the information equipment (11) an incentive message to renew the implementation of said self-diagnosis method of the vehicle when the vehicle mileage has been incremented by a predefined number. kilometers. Preferably, the incentive message is transmitted when the driver puts the ignition. The invention is not limited to the embodiments described above, given only by way of example, but also encompasses all the variants that may be considered by those skilled in the art within the scope of the definition that has been given.

Claims (10)

  1. CLAIMS 1- A method for self-diagnosis of a land vehicle, preferably a motor vehicle, by a system (1) for self-diagnosis embedded on said vehicle characterized in that it comprises the following steps: - execution of at least one test for checking the functional state of at least one actuator (9) and / or at least one sensor (7) embedded in said vehicle so as to obtain a result, the at least one test implementing at least one of the following operations a) controlling the activation of the control of said actuator (9) when it is requested, b) checking the operation of said actuator (9) by individual request, c) checking the relevance of the information indicated by said sensor (7). ), - analyzing the result (s) of the test (s) so as to establish a diagnosis on the functional state of the actuators (9) and / or the sensors (7) tested, and - transmission of the diagnosis established by an information equipment in accordance with one of a driver of the vehicle.
  2. 2- Method according to claim 1 characterized in that at least one test for monitoring the functional state of at least one actuator (9) and / or at least one sensor (7) embedded in said vehicle takes place while the vehicle engine does not provide any work.
  3. 3- Method according to one of claims 1 to 2 characterized in that the control of the relevance of the information indicated by at least one sensor (7) 16s'effects in response to an action of the driver of the vehicle on said sensor (7) .
  4. 4- Method according to one of claims 1 to 3 characterized in that at least one control operation operation of at least one actuator (9) comprises a verification of its consumption of electrical energy, preferably this verification is carried out by comparison with a pre-recorded reference value.
  5. 5. Method according to one of claims 1 to 4 characterized in that it further comprises the following steps: - execution of at least one control test of the dynamic functions of the vehicle; - analysis of the result in order to establish a diagnosis; - transmission of the diagnosis established in the direction of the driver; and / or the following steps: - performing at least one control test of the data relating to the rolling of the vehicle; - analysis of the result in order to establish a diagnosis; - transmission of the diagnosis established in the direction of the driver.
  6. 6. Method according to one of claims 1 to 5 characterized in that it comprises an initial step of establishing one or more lists of actuators (9) and / or sensors (7) to be tested, the or lists containing all or part of the actuators (9) and / or sensors (7) embedded in the vehicle, and in that the control tests are performed on the sensors (7) and / or the actuators (9) listed. s
  7. 7- system (1) self-diagnosis on board a land vehicle, preferably automobile, having at least one electric battery, said system (1) comprising: - an electronic control unit (3) having a memory, - a set of computers (5) networked with said electronic control unit (3), - a set of sensors (7) readable by the computers (5) and / or the electronic control unit (3), - a set of actuators (9) which can be activated by the computers (5) and / or the electronic control unit (3), - information equipment (11) connected to the electronic control unit (3) for transmission of information and / or messages towards a driver of the vehicle, the system being characterized in that it is configured to implement the self-diagnosis method according to one of claims 1 to 6 in order to perform at least one electrical test for monitoring the operating state onnel of at least one sensor (7) and / or at least one actuator (9) embedded in said vehicle, preferably the electronic control unit (3) is configured to control the execution of the test or tests to at least one computer (5), for receiving the diagnosis established by said computer (5) and for transmitting said diagnosis to the driver by means of the information equipment (11).
  8. 8- System according to claim 7 characterized in that it further has a current sensor and in that it is configured to measure the intensity of the current delivered by the vehicle battery when an actuator (9) is requested and to compare this measurement with a reference value kept in memory in order to establish a diagnosis relating to the electrical energy consumption of said actuator (9).
  9. 9- System according to one of claims 7 or 8 characterized in that the electronic control unit is further configured to keep in memory the mileage presented by the vehicle during the implementation of the self-diagnosis method of the vehicle, and in that it is further configured to transmit to the driver an incentive message to renew the implementation of said control of the functional state of the vehicle when the vehicle mileage has been incremented by a predefined number kilometers.
  10. 10-System according to one of claims 7 to 9 characterized in that the electronic control unit is further configured to maintain a diagnosis performed in memory when the diagnosis finds a failure of an actuator (9) and / or d a sensor (7) and for transmitting said diagnosis to the driver whenever the vehicle contact is made.
FR1156144A 2011-07-07 2011-07-07 Self-diagnosis method for car, involves analyzing result to establish diagnosis on functional state of actuator and/or tested sensor, and transmitting diagnosis established by information equipment in direction of driver of vehicle Withdrawn FR2977686A1 (en)

Priority Applications (1)

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FR1156144A FR2977686A1 (en) 2011-07-07 2011-07-07 Self-diagnosis method for car, involves analyzing result to establish diagnosis on functional state of actuator and/or tested sensor, and transmitting diagnosis established by information equipment in direction of driver of vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1156144A FR2977686A1 (en) 2011-07-07 2011-07-07 Self-diagnosis method for car, involves analyzing result to establish diagnosis on functional state of actuator and/or tested sensor, and transmitting diagnosis established by information equipment in direction of driver of vehicle

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FR2977686A1 true FR2977686A1 (en) 2013-01-11

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FR1156144A Withdrawn FR2977686A1 (en) 2011-07-07 2011-07-07 Self-diagnosis method for car, involves analyzing result to establish diagnosis on functional state of actuator and/or tested sensor, and transmitting diagnosis established by information equipment in direction of driver of vehicle

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FR (1) FR2977686A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20010029424A1 (en) * 2000-03-24 2001-10-11 Honda Giken Kogyo Kabushiki Kaisha Control system and method of internal combustion engine, for supressing load variation and improving self-diagnosis
EP1253415A2 (en) * 2001-04-25 2002-10-30 Fuji Jukogyo Kabushiki Kaisha Vehicle control system
US20070093947A1 (en) * 2005-10-21 2007-04-26 General Motors Corporation Vehicle diagnostic test and reporting method
US20100145571A1 (en) * 2008-12-08 2010-06-10 Electronics And Telecommunications Research Institute In-vehicle terminal for diagnosing vehicle using obd connector

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20010029424A1 (en) * 2000-03-24 2001-10-11 Honda Giken Kogyo Kabushiki Kaisha Control system and method of internal combustion engine, for supressing load variation and improving self-diagnosis
EP1253415A2 (en) * 2001-04-25 2002-10-30 Fuji Jukogyo Kabushiki Kaisha Vehicle control system
US20070093947A1 (en) * 2005-10-21 2007-04-26 General Motors Corporation Vehicle diagnostic test and reporting method
US20100145571A1 (en) * 2008-12-08 2010-06-10 Electronics And Telecommunications Research Institute In-vehicle terminal for diagnosing vehicle using obd connector

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