EP4453667A1 - Dispositif et procédé d'évaluation d'un système d'aide à la conduite pour véhicule automobile, le système d'aide à la conduite mettant en oeuvre un réseau neuronal artificiel - Google Patents
Dispositif et procédé d'évaluation d'un système d'aide à la conduite pour véhicule automobile, le système d'aide à la conduite mettant en oeuvre un réseau neuronal artificielInfo
- Publication number
- EP4453667A1 EP4453667A1 EP22835834.7A EP22835834A EP4453667A1 EP 4453667 A1 EP4453667 A1 EP 4453667A1 EP 22835834 A EP22835834 A EP 22835834A EP 4453667 A1 EP4453667 A1 EP 4453667A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- driving
- assistance system
- neural network
- characteristic vector
- information
- 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
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B13/00—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion
- G05B13/02—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric
- G05B13/0265—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric the criterion being a learning criterion
- G05B13/027—Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric the criterion being a learning criterion using neural networks only
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06N—COMPUTING ARRANGEMENTS BASED ON SPECIFIC COMPUTATIONAL MODELS
- G06N3/00—Computing arrangements based on biological models
- G06N3/02—Neural networks
- G06N3/04—Architecture, e.g. interconnection topology
- G06N3/0475—Generative networks
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06N—COMPUTING ARRANGEMENTS BASED ON SPECIFIC COMPUTATIONAL MODELS
- G06N3/00—Computing arrangements based on biological models
- G06N3/02—Neural networks
- G06N3/08—Learning methods
- G06N3/0895—Weakly supervised learning, e.g. semi-supervised or self-supervised learning
Definitions
- the invention relates to the field of driving assistance systems for motor vehicles, and it relates more particularly to such driving assistance systems implementing at least one artificial neural network. It finds a non-exclusive but particularly advantageous application for autonomous or semi-autonomous motor vehicles.
- Driving assistance systems occupy an increasingly important part in motor vehicles, whether the latter are completely autonomous or with varying degrees of autonomy. Depending on the types of vehicles and their configurations, these driving assistance systems have the task of facilitating or enabling safe driving of the vehicle. Such driving assistance systems can, for example, transmit a simple warning to the driver in the event of a potentially dangerous situation such as, for example, an untimely crossing of a line on a road, or they can act directly on one or several vehicle control devices, for example, to give an autonomous or semi-autonomous vehicle a change of direction.
- the artificial neural network is implemented in particular to define a characteristic vector representative of a set of driving information assimilated simultaneously by the artificial neural network for a given road scene.
- This characteristic vector represents a prioritization of the data present in the assimilated driving information and serves as a basis for the development, by appropriate calculation means of the driving assistance system, of a driving action on a control member of the vehicle capable of responding to the driving situation analyzed by the artificial neural network.
- the use of these neural networks makes it possible to respond very effectively to instantaneous driving situations which may not have yet been encountered by the driver assistance system.
- These systems are particularly reliable, but a disadvantage of their use is that it is complicated to detect possible cases of malfunctioning due to the difficulty of quickly apprehending and criticizing the information processing logic of the artificial neural network.
- the technical problem to which the present invention proposes to provide a solution is that of identifying, in a driving assistance system implementing a neural network, cases of malfunction or driving situations in which the system driving assistance is likely to malfunction.
- the subject of the invention is, according to a first aspect, a device for evaluating a driving assistance system for a motor vehicle, the driving assistance system implementing a neural network artificial to generate a driving action on a control member of the vehicle as a function of a set of instantaneous driving information, the driving assistance system acting in particular by the definition, by the artificial neural network, of a feature vector representative of the set of instantaneous driving information, the evaluation device being configured to identify at least one critical feature vector for which it is impossible to define a driving action or for which the driving action is erroneous .
- the driving action generated by the driving assistance system is here performed on a control member of the vehicle. It may be, by way of non-exhaustive examples, the braking system of the vehicle, or the steering wheel thereof.
- the driving assistance system considered thus controls the performance, by the control member considered, of the driving action that it has generated, with or without the intervention of a driver of the vehicle.
- the driving information used by the driving assistance system to generate the driving action consists of a plurality of information measured and/or calculated by a set of sensors and/or calculation components of the vehicle. It should be considered that this driving information is said to be instantaneous since it is detected at a given instant, if necessary continuously in real time.
- this driving information may include remote sensing data obtained by a device of the LIDAR or RADAR type, images taken by one or more cameras of the vehicle, values of vehicle operating parameters such as, for example, the speed or the direction of the vehicle, measured by various sensors such as, for example, a speed sensor or a steering wheel angle sensor, or values of parameters relating to the instantaneous environment of the vehicle such as, for example, a wet or dry state of the road surface, measured for example by a rain sensor of the windscreen wiper system of the vehicle, or an ambient brightness value measured for example by a brightness sensor of the assembly of vehicle lighting and signaling.
- vehicle operating parameters such as, for example, the speed or the direction of the vehicle, measured by various sensors such as, for example, a speed sensor or a steering wheel angle sensor, or values of parameters relating to the instantaneous environment of the vehicle such as, for example, a wet or dry state of the road surface, measured for example by a rain sensor of the windscreen wiper system of the vehicle, or an ambient brightness value
- the artificial neural network of the driving assistance system compiles this instantaneous driving information, obtained at a given instant of vehicle travel, into a characteristic vector that can be used by calculation means of the driving assistance system and, on the basis of the characteristic vector, the driving assistance system defines a driving action as mentioned above.
- the evaluation device proposed by the invention is configured to identify, among the characteristic vectors defined by the artificial neural network of the driving assistance system, the one or those for which no driving action can be generated, for example due to a conflict between different driving information, as well as that or those leading to an erroneous driving action.
- the term “erroneous” is here to be understood, such as, for example, an inconsistent driving action with regard to the driving parameters of the vehicle at the moment in question.
- the evaluation device comprises, according to one of its characteristics: an approximator module configured to define a transfer function linking the characteristic vector defined by the artificial neural network of the driving assistance and the driving action generated by the driving assistance system as a function of this characteristic vector, the function of transfer being expressed in the form of a ratio of a numerator polynomial function and a denominator polynomial function, a resolution module configured to search for at least one critical characteristic vector, solution of divergence of the transfer function defined by the approximator module, more particularly a characteristic vector value solution of the cancellation equation of the denominator polynomial function.
- variable of the transfer function defined by the approximator module is the characteristic vector defined by the artificial neural network of the driving assistance system.
- the approximator module of the evaluation system is configured to express in the form of a ratio of polynomial functions the relationship existing within the driver assistance system between a characteristic vector defined by the neural network artificial and the resulting driving action
- the resolution module is configured to search for the cases of divergence of a transfer function formed from the ratio of polynomial functions, that is to say, in particular, the cases of cancellation of the denominator of said report. It is considered here that the cases of divergence of the aforementioned transfer function lead to impossibilities of defining driving actions or to erroneous driving actions in the sense described previously.
- the resolution module is configured to find one or more critical characteristic vectors that can lead to a malfunction of the driving assistance system, that is to say to cases in which the latter will not be able to generate driving action or cases in which the generated driving action will be inconsistent with the instantaneous driving information.
- the evaluation device comprises a calculation module implementing an inverted artificial neural network, the calculation module being configured to determine critical driving information on the basis of the at least one critical characteristic vector defined by the resolution module. More particularly, the calculation module of the evaluation device according to the invention is configured to implement, via the inverse artificial neural network evoked, the inverse function of the function implemented by the artificial neural network of the aid system to driving to define a characteristic vector from the instantaneous driving information previously mentioned. The calculation module therefore determines a set of critical driving information which would lead to the critical characteristic vector defined by the approximator module and the resolution module.
- the calculation module of the evaluation device implements an inverse artificial neural network, for example of the type known by the Anglo-Saxon acronym GAN for Generative Adversarial Network.
- the evaluation device comprises a comparator member configured to compare the critical driving information determined by the inverse artificial neural network of the calculation module with the instantaneous driving information originally transmitted to the artificial neural network of the system driving assistance.
- the comparator unit and the calculation module operate by successive iterations, that is to say that the critical driving information determined by the calculation module of the evaluation device on the basis of the critical characteristic vector defined by the resolution module are adjusted by successive iterations, until they correspond to the characteristic vector defined by the artificial neural network of the driving assistance system.
- a form of self-learning of the calculation module of the evaluation device according to the invention is thus achieved.
- the evaluation device comprises an analysis unit configured to compare the driving action generated by the driving assistance system for the at least one critical characteristic vector defined by the resolution module with a theoretical driving action to be performed defined by a driver of the vehicle for identical driving information.
- the analysis unit is configured to validate or not the relevance of the action generated by the driver assistance system in the case of a critical characteristic vector leading to a divergence of the function transfer defined by the approximator module, and this validation is fed back to the driving assistance system in particular for the purposes of continuous learning of the artificial neural network of the driving assistance system.
- the invention relates to a test bench for a driving assistance system comprising an artificial neural network and an evaluation device as mentioned above.
- a test bench is in particular implemented in the workshop, during the development of the driving assistance system and the learning of the artificial neural network, and the evaluation device can be installed on the bench to improve the learning of the artificial neural network, in particular by sending back data to it on situations deemed critical following the analysis made initially by the driver assistance system.
- the invention relates to a vehicle equipped with a driving assistance system comprising an artificial neural network and an evaluation device as mentioned above.
- the function of the evaluation device on board the vehicle is in particular to detect critical analysis cases in real time and to send control information to the vehicle which replaces the control information previously generated by the assistance system. driving and its artificial neural network.
- the subject of the invention is a method for evaluating a driving assistance system of a motor vehicle, the driving assistance system implementing an artificial neural network, the method evaluation comprising: a first phase of recovery, by the resolution module of an evaluation device as previously described, of at least one characteristic vector forming part of a pair of data established by the aid system to driving and consisting respectively of a characteristic vector defined on the basis of instantaneous driving information and of a driving action generated by the driving assistance system on the basis of the vector characteristic, a second phase, or a third phase, of determining at least one critical characteristic vector for which the transfer function defined by the approximator module of the evaluation device diverges, a transmission step, to the driving, discrepancy information on the basis of which the driving assistance system can generate a corrective action.
- the corrective action may consist of a simple transmission of information on the divergence of the operation of the driver assistance system.
- This discrepancy information can be sent to a driver of the vehicle, to a central control unit of the vehicle or to the driver assistance system.
- the method according to the invention then makes it possible to carry out a form of self-learning of the driving assistance system.
- the aforementioned corrective action may comprise one or more actions on the vehicle itself.
- the corrective action may consist, depending on the degree of autonomy of the vehicle, of a request for control of the vehicle by a driver, or of an action on a control device of the vehicle. to make it safe.
- the method according to the invention comprises: a step of determining at least one set of critical driving information corresponding to a critical characteristic vector for which the transfer function defined by the approximator module of a device of The evaluation as previously described diverges, a step of comparing the critical driving information with the instantaneous driving information having led to the determination of the characteristic vector by the artificial neural network of the driving assistance system.
- the method according to the invention comprises: a step of comparing the driving action, controlled by the artificial neural network of the driving assistance system for information instantaneous driving actions having led to the critical characteristic vector for which the transfer function defined by the approximator module of an evaluation device as previously described diverges, with a theoretical driving action, previously defined by a driver of the vehicle, for the same driving information, a transmission step, to the driving assistance system, of the theoretical driving action.
- the method according to the invention thus achieves a form of self-learning of the driving assistance system.
- the invention therefore allows, on the one hand, an evaluation of a driving assistance system implementing an artificial neural network, and, on the other hand, a self-learning thereof.
- FIG i is a schematic representation of a first embodiment of the evaluation device according to the invention.
- FIG 2 is a schematic representation of a second embodiment of the evaluation device according to the invention.
- FIG 3 schematically illustrates an example of the progress of a first mode of implementation of the method according to the invention
- FIG 4 schematically illustrates an example of the course of a second embodiment of the method according to the invention.
- FIG. 1 schematically shows an evaluation device 100 according to the invention, configured to evaluate a driving assistance system 200 of a motor vehicle, the driving assistance system 200 implementing a artificial neural network 201.
- the artificial neural network 201 of the driving assistance system 200 is configured to define a characteristic vector Z from a plurality of instantaneous driving information X measured and/or calculated within of a motor vehicle not represented in FIG. 1.
- the instantaneous driving information X can comprise remote sensing data obtained by a device of the LIDAR or RADAR type, and/or images recorded by a or several cameras on board the vehicle, and/or information relating to the speed of the vehicle or information relating to an angular position of the steering wheel of the vehicle.
- the driving assistance system 200 is configured to generate a driving action Y on a control member 300 of the vehicle.
- the control member 300 of the vehicle can be, for example, the steering wheel thereof.
- the driving action Y is notably defined by calculation means 202, of the regressor and controller type.
- the evaluation device 100 also comprises a resolution module 103, configured to search for the solutions of divergence of the transfer function Tf previously defined, that is to say the values of the characteristic vector Z for which the transfer function Tf diverges.
- a value of the characteristic vector Z for which the transfer function diverges can in particular be considered as a critical characteristic value.
- the driving assistance system 200 transmits to the evaluation device 100 pairs (Z, Y) each of which consists of a characteristic vector Z and of a driving action Y generated by the driving assistance system 200 on the basis of said characteristic vector Z.
- this evaluation device 100 is in operation, whether in a test phase of the driving assistance system 200 or during a driving phase of a vehicle equipped with the driving assistance system 200 and from the evaluation device 100, a characteristic vector Zi is transmitted by the driving assistance system 200 to the evaluation device 100, this information being the only data likely to be recovered in the black box represented by the driving assistance system equipped with an artificial neural network.
- the resolution module 103 associated with the approximator 102 searches whether the characteristic vector Zi is a solution of the equation for canceling the denominator function f2 as previously indicated. If so, the invention provides, according to the first exemplary embodiment illustrated by FIG. 1, that the evaluation device 100 transmits to the driving assistance system 200 information 110 of divergence so that the latter generates a corrective action 210.
- the corrective action 210 can take the form of information to stop the driving assistance driving, or it can take the form of a request to take control of the vehicle by the driver of the latter, or it can take the form of a command from the previously mentioned component 300 for securing the vehicle.
- FIG. 2 illustrates a second embodiment of an evaluation device 100 according to the invention. We find in FIG. 2 the approximator module 102 and the resolution module 103 previously defined, as well as the driving assistance system 200.
- the calculation module 104 is configured to define the inverse relationship of the relationship established by the artificial neural network 201 of the driving assistance system 200 between the characteristic vector Z and instantaneous driving information X.
- the calculation module 104 can implement an artificial neural network inverse to the artificial neural network implemented by the driver assistance system 200, for example of the type known by the acronym GAN for Generative Adversarial Network.
- the evaluation device further comprises a comparator unit 105 configured to compare the critical driving information Xi′, determined by the calculation module 104, with instantaneous driving information Xi transmitted by the vehicle to the driving assistance system 200 and having led the artificial neural network 201 to define the characteristic vector Zi, which was then used to calculate the critical characteristic vector.
- a comparator unit 105 configured to compare the critical driving information Xi′, determined by the calculation module 104, with instantaneous driving information Xi transmitted by the vehicle to the driving assistance system 200 and having led the artificial neural network 201 to define the characteristic vector Zi, which was then used to calculate the critical characteristic vector.
- a succession of comparison iterations can be implemented in order to carry out a form of self-learning of the comparator unit 105 and of the calculation module 104, until critical driving information X′ defined by the calculation module 104 corresponds to instantaneous driving information X transmitted by the vehicle to the driving assistance system 200.
- the evaluation device 100 allows, on the one hand, to identify critical characteristic vectors, for which the transfer function Tf, linking characteristic vector and driving action, diverges.
- a divergence may result, for example, in the impossibility for the driver assistance system 200 to define and generate a driving action, or it may result in the definition, for the driving assistance system 200, of an inconsistent driving action with regard to the instantaneous driving information: by way of example, the driving action generated by the driving assistance system 200 for a vector critical characteristic inducing a divergence of the transfer function Tf may require a vehicle speed variation that is incompatible, for example, with its weight and speed, or even generate sharp turns, not necessarily adapted to the driving context .
- the evaluation device 100 makes it possible to reconstitute the driving information leading to a critical characteristic vector.
- the evaluation device 100 therefore thus makes it possible to identify driving situations which may lead to a divergence of the transfer function Tf of the evaluation system, that is to say, in other words, which may lead to an inconsistent or erroneous action generated by the driver assistance system 200.
- the evaluation device can comprise an analysis unit configured to compare a driving action generated by the driving assistance system 200 from the characteristic vector identified as critical by the evaluation device with a theoretical driving action such as it would be carried out by a driver of the vehicle for instantaneous driving information equivalent to that having led to the establishment of the critical characteristic vector.
- a theoretical driving action such as it would be carried out by a driver of the vehicle for instantaneous driving information equivalent to that having led to the establishment of the critical characteristic vector.
- FIG. 3 schematically illustrates the different aspects of a first embodiment of a method according to the invention.
- a plurality of pairs (Z, Y), respectively composed of a characteristic vector Z established from instantaneous driving information X by the artificial neural network 201 of the driving assistance system 200 and a driving action Y generated by the driving assistance system 200 on the basis of the characteristic vector Z is transmitted to the evaluation device 100, more precisely to the approximator module 102 of the latter.
- the first phase 10 then consists in constructing the approximator 102 and this first phase 10 can be carried out on a test bench of the driving assistance system 200 and of the evaluation device 100.
- a second phase 20 can therefore be implemented once the approximator 102 has been constructed, and this second phase comprises a first step 21 and a second step 22.
- the evaluation device 100 transmits to the driving assistance system 200 divergence information 110 representative of the potential divergence of the model implemented by the artificial neural network 201 when the characteristic vector takes the critical values identified during the second step 22 of the second phase 20.
- the evaluation device 100 can be associated with a test bench of the driving assistance system 200, and the information of divergence 110 fed back to the driver assistance system 200 serves to improve the performance of the latter, the artificial neural network taking into account the critical characteristic value that had been found for its self-learning.
- a third phase 30 can be implemented once the approximator 102 has been constructed, and this third phase 30 comprises a first sequence 31 and a second sequence 32.
- this first sequence 31 can be defined so that the equation considered is f2(Z) - 0.
- the evaluation device 100 transmits to the driving assistance system 200 information 110 representative of a risk of potential divergence from the model implemented by the artificial neural network 201 since the characteristic vector takes values equal to or close to a critical characteristic vector.
- the second phase 30 of the first mode of implementation of the method is carried out in real time when the evaluation device 100 is on board the vehicle.
- the information 110 fed back to the driver assistance system 200 can in particular be used to correct the control of the vehicle as it was initially provided by the driver assistance system 200.
- FIG. 4 schematically illustrates a second embodiment of the method according to the invention. We find here only the second phase 20 following the first phase, but it should be noted that the third phase could also be provided in this second mode of implementation without departing from the context of the invention.
- the method according to the invention comprises a first additional step 40 during which, at from the critical characteristic vector defined during one of the preceding phases, here in particular the second phase 20, the calculation module 104 of the evaluation device 100 reconstitutes critical driving information Xi', for example from a neural network reverse artificial as previously mentioned.
- a second additional step 50 du the critical driving information Xi' reconstituted from the critical characteristic vector is compared, within the comparison unit 5 of the evaluation device 100, with the instantaneous driving information Xi from which the artificial neural network 201 of the driving assistance system 200 has established the characteristic vector Zi.
- the invention therefore makes it possible, by simple means, on the one hand, to identify, among all the applications on board a plurality of vehicles, the applications which have a number malfunctions or a frequency of repetitions of these malfunctions deemed too significant and, on the other hand, to selectively and preventively deactivate such applications.
- the evaluation device according to the invention can be applied to any driving assistance system.
- driving a large or small industrial machine such as, by way of non-exhaustive example, a set of pilot valves of an industrial installation, insofar as this driving assistance system implements an artificial neural network and to the extent that the device evaluation has one or more of the characteristics described or illustrated in this document.
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- Health & Medical Sciences (AREA)
- Computer Vision & Pattern Recognition (AREA)
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Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2114472A FR3131260B1 (fr) | 2021-12-24 | 2021-12-24 | Dispositif et procédé d’évaluation d’un système d’aide à la conduite pour véhicule automobile, le système d’aide à la conduite mettant en œuvre un réseau neuronal artificiel |
| PCT/EP2022/086581 WO2023117857A1 (fr) | 2021-12-24 | 2022-12-19 | Dispositif et procédé d'évaluation d'un système d'aide à la conduite pour véhicule automobile, le système d'aide à la conduite mettant en œuvre un réseau neuronal artificiel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4453667A1 true EP4453667A1 (fr) | 2024-10-30 |
Family
ID=80933200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22835834.7A Pending EP4453667A1 (fr) | 2021-12-24 | 2022-12-19 | Dispositif et procédé d'évaluation d'un système d'aide à la conduite pour véhicule automobile, le système d'aide à la conduite mettant en oeuvre un réseau neuronal artificiel |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4453667A1 (fr) |
| CN (1) | CN118647942A (fr) |
| FR (1) | FR3131260B1 (fr) |
| WO (1) | WO2023117857A1 (fr) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6528583B2 (ja) * | 2015-07-31 | 2019-06-12 | 株式会社デンソー | 運転支援制御装置 |
| US20220161810A1 (en) * | 2019-03-11 | 2022-05-26 | Mitsubishi Electric Corportion | Driving assistance device and driving assistance method |
| TWI705016B (zh) * | 2019-07-22 | 2020-09-21 | 緯創資通股份有限公司 | 行車預警系統、行車預警方法及使用所述方法的電子裝置 |
| US12325453B2 (en) * | 2021-08-23 | 2025-06-10 | Intel Corporation | Handover assistant for machine to driver transitions |
-
2021
- 2021-12-24 FR FR2114472A patent/FR3131260B1/fr active Active
-
2022
- 2022-12-19 EP EP22835834.7A patent/EP4453667A1/fr active Pending
- 2022-12-19 CN CN202280085094.XA patent/CN118647942A/zh active Pending
- 2022-12-19 WO PCT/EP2022/086581 patent/WO2023117857A1/fr not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| CN118647942A (zh) | 2024-09-13 |
| FR3131260A1 (fr) | 2023-06-30 |
| WO2023117857A1 (fr) | 2023-06-29 |
| FR3131260B1 (fr) | 2024-10-18 |
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