FR3077551A1 - METHOD FOR MONITORING THE DRIVING ACTIVITY OF A MOTOR VEHICLE DRIVER - Google Patents

Abstract

The method comprises a step of recording (E1) location data (DATA1 (V0, TAB)) and operating data (DATA2 (V0, TAB)) of the vehicle on a path (TAB); a step of transmitting (E2) said data to a remote tracking server; an identification step (E3) by said server, on said path (TAB), of a road segment (SRx) belonging to a set of road segments (SRn) stored in said server; a calculation step (E4) by the server of a driving score quantifying a component of the driving behavior of said driver on said identified road segment (SRx), from the operating data (DATA2 (V0, TAB)) of the vehicle; and a comparison step (E5) of the calculated driving score for said driver on the identified road segment (SRx) with other driving scores stored in memory and previously obtained on the same road segment.

Description

DRIVING ACTIVITY MONITORING PROCESS

OF A MOTOR VEHICLE DRIVER The present invention relates generally to a method for monitoring a driving activity of a driver of a motor vehicle and a server for monitoring the driving activity of a plurality of motor vehicle drivers.

It is known that the behavior of a motor vehicle driver influences the energy consumption of the vehicle in fuel and / or in electrical energy. Good driving practices can significantly reduce the vehicle’s energy consumption and reduce the impact on the environment.

Document EP3106342 describes, for example, an application for displaying information relating to the accomplishment of an objective or challenge, while driving the vehicle, on a screen observable by the driver. The user continuously uses the application while driving in order to achieve a certain stability or consistency and / or an improvement in his driving.

An object of the present invention is to allow the driver to further improve his driving, that is to say his driving behavior, for example so as to reduce his consumption of fuel and / or electrical energy.

To this end, a first aspect of the invention relates to a method for monitoring the driving activity of a driver of a motor vehicle, comprising

- a recording step consisting in recording location data and vehicle operating data on a journey of said vehicle;

a transmission step during which said location data and said vehicle operating data on said journey are transmitted to a remote monitoring server, through a communication network,

- an identification step during which the tracking server identifies on said journey a road segment belonging to a set of road segments stored in said server, from said transmitted location data,

a calculation step during which the tracking server calculates a driving score quantifying a component of the driving behavior of said driver on said identified road segment, from vehicle operating data;

a comparison step during which the tracking server compares the driving score calculated for said driver on the identified road segment with other driving scores (that is to say old scores of the driver or scores of other drivers on this same segment) stored in memory and previously obtained for said component of driving behavior on the same road segment.

[0006] A "road segment" corresponds to a road segment between two reference points. It can be defined by the driver or by another user of the tracking server or by the tracking server itself. Such a segment allows different users who have traveled this segment to compare themselves.

Thanks to the invention, a CDo driver of a motor vehicle can assess his driving, in particular his eco-driving performance, on the basis of a comparison of one or more scores made by this CDo driver with other driving scores (i.e. old driver scores or scores of other drivers on the same segment) previously obtained in practice on the same road segment. The other driving scores may have been obtained by other CDk drivers (1 <k <N) and / or by this same CDo driver. The road segment, serving as a reference for the comparison, belongs to a set of predefined road segments stored in memory in the server. If a road segment listed in memory is recognized in a journey (or trip) made by the driver CDo on board his vehicle Vo, the server uses this road segment as a reference segment to compare the conduct of the driver CDo with those of 'other CDk conductors and / or to that of this same CDk conductor previously recorded.

[0008] During the calculation step, the tracking server can calculate the driving score quantifying at least one of the driving behavior components of the group comprising

- energy consumption;

- regularity of conduct

- freewheeling;

- a line with engine brake, in the case of a mechanical gearbox;

- driving with activation of a braking system;

- a reaction time to shift a gearbox according to a gear change indicator;

advantageously, during the recording step, vehicle operating data relating to at least one of the parameters of the group comprising speed, instantaneous energy consumption, energy consumption are recorded average, engine speed, gearbox reports.

Advantageously also, during the calculation step, the tracking server calculates a plurality of driving scores quantifying respectively a plurality of components of the driving behavior of the driver on said identified road segment.

In a first embodiment, the location data and the vehicle operating data are recorded in a local memory of the vehicle and, upon detection near the vehicle of a radio terminal belonging to a network of dedicated radio terminals when collecting vehicle data, said location and operating data recorded in the local memory are transmitted by radio to the detected radio terminal.

In a second embodiment, the location data and the vehicle operating data are transmitted from the vehicle to a mobile communication terminal present in the vehicle then from the mobile communication terminal to the remote server through said communication network .

In a third embodiment, the location data and the vehicle operating data are recorded in a removable storage medium connected to the vehicle, said storage medium is then disconnected from the vehicle and then connected to a communication device itself. even connected to the communication network in order to transmit said location and operating data to the remote server.

In a fourth embodiment, the vehicle being connected to said communication network, the location data and the vehicle operating data are transmitted directly from the vehicle to the tracking server.

A second aspect of the invention is a server for monitoring the driving behavior of a plurality of drivers, comprising

- a storage module for a set of predefined road segments;

- a module for receiving location data and operating data from a vehicle on a journey, through a communication network;

- an identification module arranged to identify on said journey a road segment belonging to the set of stored road segments, from said transmitted location data;

- a calculation module arranged to calculate a driving score quantifying a component of the driving behavior of a driver of said vehicle on said identified road segment, from vehicle operating data;

- a comparison module arranged to compare the driving score calculated for said driver on the road segment identified with other driving scores stored in memory and previously obtained for said driving behavior component on the same road segment.

Other characteristics and advantages of the present invention will appear more clearly on reading the following detailed description of an embodiment of the invention given by way of non-limiting example and illustrated by the accompanying drawings, wherein :

FIG. 1 represents a flow diagram of steps of the analysis method, according to a particular embodiment of the invention;

FIG. 2 represents a functional block diagram of a server suitable for implementing part of the steps of the method of FIG. 1.

It will be understood that various modifications and / or improvements obvious to those skilled in the art can be made to the various embodiments of the invention described in the present description without departing from the scope of the invention defined by the appended claims.

The method of the invention makes it possible to follow the driving activity of a driver of a motor vehicle so that this driver improves his driving, for example by reducing the energy consumption of the vehicle (in fuel and / or in electrical energy ), by optimizing the use of certain driving conditions considered ecological and / or economical and by reducing emissions of polluting substances by the vehicle.

Take the example of a CDo driver driving a Vo vehicle. The method of the invention makes it possible to follow the driving activity of the vehicle Vo by the driver CDo and to compare one or more driving scores obtained by the driver CDo on a given road segment, traveled by the vehicle Vo, with driving scores previously obtained by other CDk drivers (1 <k <N) and / or by this same CDo driver on this same road segment serving as a reference. By definition, a driving score assesses a component of driving behavior, as will be described in more detail below.

The driving behavior of a CDo driver has different components denoted here Coj with i> 1. In the particular example, purely illustrative, described here, these driving behavior components include:

- an energy consumption Co, i;

- a regularity of conduct Co, 2;

- Co, 3 freewheeling (consisting of turning the vehicle in idle mode by disengaging the motor from the wheels);

- a line with Co, 4 engine brake (in the case of a mechanical gearbox);

- driving with activation of a Co, s braking system (using the vehicle's brake pedal);

- a reaction time to pass a gearbox report as a function of a gearshift indicator Co, 6 (in the case of a mechanical gearbox);

- driving in overspeed Co, 7.

In order to monitor the driving activity of the driver CDo, and more precisely to assess his driving behavior, the component or components C _O j of driving behavior are evaluated using driving scores ( or "driving evaluation values >>or" driving evaluation results >>), when the driver CD ₀ drives his vehicle Vo on a given road segment, then the driving score or scores are compared with other scores previously obtained by other drivers and / or by the same driver CD ₀ on this same trip segment. The driving scores are calculated from vehicle data transmitted to a tracking server S, through a communication network 100.

By "vehicle data" is meant here to designate all useful data relating to the operation and location of the vehicle. They can be obtained using sensors, receivers and / or computers. The vehicle data comes from the vehicle computers such as the engine computer, the gearbox computer, the ESP (from the Electronic Stability Program) computer for electronic trajectory correction. As illustrative examples, the vehicle data relating to its operation include:

- a speed of movement of the vehicle;

- instantaneous energy consumption of the vehicle (in fuel and / or in electrical energy);

- average energy consumption of the vehicle (in fuel and / or in electrical energy);

- engine speed;

- gearbox reports engaged;

- measurements of a clutch pedal sensor (in the case of a vehicle with a manual gearbox);

- measurements of a brake pedal position sensor;

- measurements of a GSI indicator tracking sensor intended to measure the reaction time of the driver to pass a higher gearbox ratio according to a GSI indicator (from the English “GearShift Indicator”) by example displayed on the dashboard.

Of course, other vehicle operating data could be used for the calculation of driving scores evaluating the driving behavior of the driver.

The vehicle location data is for example obtained using a GPS receiver integrated into the Vo vehicle.

Vehicle data is made available for driving monitoring but only in consumption, that is to say without the possibility of entering systems for the purpose of security and protection of these systems.

The tracking server S is dedicated to monitoring the driving activity of a plurality of drivers CD _k (0 <k <N), including the driver CDo. Its role is to collect the vehicle data of the vehicles Vk driven by these drivers CDk (0 <k <N), through the communication network 100, here the Internet, to identify predefined road segments in the routes or journeys of the Vk vehicles followed, to calculate driving scores on these predefined identified or recognized road segments and to compare the drivers with each other on the basis of these driving scores.

During an initial configuration step E00, each of the drivers CDk (0 <k <N) registers with the tracking server S and creates a user account by entering personal information (identity, nickname, contact information, etc.) and information relating to their vehicle Vk (manufacturer, model, year, and technical characteristics such as manual or automatic gearbox, etc.). All of this information constitutes a profile of the driver CDk. It is assumed here that a given driver CDk registers a single vehicle Vk. However, it could be considered that a driver registers several vehicles on the same account.

We will now describe in more detail the method for monitoring the driving activity of the driver CD ₀ driving the motor vehicle Vo, with reference to FIG. 1. It is assumed here that the vehicle Vo is driven by the driver CDo performs a Tab path between a start point A and an end point B.

The method comprises a first recording step E1 consisting in recording location data DATAI (Vo, Tab) and operating data DATA2 (Vo, Tab) of the vehicle Vo on the path Tab. More specifically, a central computer of the vehicle Vo stores in memory vehicle data comprising the location data DATAI (Vo, Tab) and the operating data DATA2 (V ₀ , Tab) of the vehicle V _o , supplied by sensors, receivers and / or vehicle computers. This DATA2 operating data (V ₀ , Tab) includes, for example, the previously listed data (travel speed, instantaneous / average energy consumption, engine speed, gearbox ratios, measurements of a clutch pedal sensor, measurements a brake pedal position sensor, measurements from a GSI indicator tracking sensor).

During a second transmission step E2, the location data DATAI (Vo, Tab) and the operating data DATA2 (V ₀ , Tab) recorded on the path Tab are transmitted to the remote monitoring server S, at through the communication network 100.

Various modes of transmission of vehicle data from vehicle Vo to server S can be implemented.

In a first embodiment, the location data DATAI (Vo, Tab) and the operating data DATA2 (V ₀ , Tab) of the vehicle Vo on the path Tab, recorded in a local memory of the vehicle Vo, are transmitted from the vehicle V _o to a radio terminal belonging to a network of radio terminals dedicated to the collection of vehicle data, when the vehicle Vo passes close to this radio terminal. To this end, the vehicle Vo is equipped with a radio detection module arranged to detect the presence of such a radio terminal in the vicinity when it moves and passes in the vicinity of one of them. For example, the terminal continuously transmits presence frames which are picked up by the vehicle when it passes by it.

In a second embodiment, the location data DATAI (V _o , T _A b) and the operating data DATA2 (V ₀ , T _A b) of the vehicle Vo are transmitted from the vehicle Vo to a communication terminal mobile present in the vehicle V _o , for example a mobile telephone of the driver CDo, then of the mobile communication terminal to the remote server S through the communication network 100.

In a third embodiment, the location data DATAI (V _o , T _A b) and the operating data DATA2 (V ₀ , T _A b) of the vehicle Vo are recorded in a removable storage medium connected to the vehicle Vo, for example a USB key, said storage medium is then disconnected from vehicle V _o and then connected to a communication device, such as a computer, itself connected to the communication network 100, in order to transmit said data from location and operation at the remote server S.

In a fourth embodiment, the vehicle Vo is connected to the communication network 100, and the location data DATAI (Vo, Tab) and the operating data DATA2 (V ₀ , T _A b) of the vehicle V _o are transmitted directly from the vehicle V _o to the remote server S.

In a third identification step E3, the tracking server S identifies on said path Tab a road segment belonging to a set of predefined road segments, stored in memory in the server S, from the data LOCATION DATAI (V _o , Tab) transmitted.

The tracking server S stores in memory predefined road segments SR _n , n being a natural integer greater than or equal to 1. By "road segment" is meant a road route to go from a first point to a second point. Each of these "first" and "second" points can be an intermediate point located along a path of the vehicle between a starting point and an arrival point, or a start or end point. For example, a predefined road segment can be a section of motorway between two tolls. These road segments can be defined by the server S itself (or by a server operator) and / or declared by a user or driver registered with the server S, during a configuration step E01.

During the identification step E3, the tracking server S uses the location data of the vehicle Vo to determine the route of the vehicle V _o and then determine if this route contains at least one of the predefined road segments stored in memory. Suppose here that the path Tab contains one of the predefined road segments SR _n . We note “SRx” this identified road segment.

During a fourth calculation step E4, the server S calculates one or more driving scores, or driving behavior scores, quantifying one or more components of the driving behavior of the driver CDo of the vehicle Vo on said road segment identified SRx, from the operating data DATA2 (V ₀ , Tab) and possibly the location data DATAI (V _o , Tab) of the vehicle V _o . In the embodiment described here, scores are calculated for the driving behavior components Co, i to Co, 7 previously described. The scores relating to the components Co, i to Co, 7, as described below, are given for illustrative purposes only and are not exhaustive. There can be a multitude of scores that can be calculated from a given data or by combining several data.

The energy consumption score C ₀ , i is calculated from energy consumption data extracted from the DATA2 data (V ₀ , Tab) transmitted. The score can be a gross value of fuel consumption and / or electrical energy on the SRx road segment. As a variant, the score calculated is a percentage of reaching a theoretical minimum value of consumption calculated by the server or the real minimum value previously recorded on this road segment SRx.

The driving regularity score C ₀ , 2 corresponds to a consumption gradient as a function of the driving linearity. It is calculated from acceleration data and energy consumption data of the vehicle Vo.

The freewheeling score Co, 3 evaluates the distance traveled in freewheeling, also called "free-wheeling" or "coasting", the vehicle traveling in idle mode by disengaging the motor from the wheels. The freewheeling score Co, 3 is calculated from the speed ratio data, in particular from the information according to which the gearbox is in neutral (wheels disengaged from the engine), and speed data and / or locating the Vo vehicle. For example, this score corresponds to a percentage representative of the proportion of the identified road segment SRx which has been coasted by the vehicle Vo.

The driving score with engine brake Co, 4, in the case where the vehicle Vo is equipped with a mechanical or manual gearbox, assesses the use of the engine brake (apart from braking for safety reasons) , which limits brake wear and recovers energy during deceleration. During a movement of the vehicle Vo on the identified road segment SRx, this driving score with engine brake Co, 4 is for example calculated by the following expression, from data extracted from DATA2 (V ₀ , Tab):

score _c 0.4 distance nipri / p “p —----------- piea teve --- * _1QQ distance brake and foot, lifted

OR

- the " _{tevé foot} distance" corresponds to the distance traveled by the vehicle when the driver's foot does not use the accelerator and brake pedals on the identified SRx road segment (the driver being authorized to make changes to gearbox ratio for braking the engine, the change must be made only with the clutch pedal without the brake or the accelerator);

the distance f _reinetpied i _evé "corresponds to the total distance traveled by the vehicle Vo during the deceleration phase:

i. when the driver CDo lets the vehicle Vo run with the traction chain closed and the foot raised or with the traction chain open and the foot on the clutch alone;

ii. when the driver CD ₀ brakes but outside the safety brakes.

The driving score with activation of a Co braking system is evaluated driving without using braking and outside braking for safety reasons. This score is calculated from data extracted from DATA2 data (Vo, Tab), for example using the following expressions:

score _c o, ₅ = (100 -% _{/ rein} ) brake ~ distance braking distancef _re i _{n piec} ii _ev ^ * 100 where the "distance ^ einage ^{> 5} distance brake and foot raised ^{> s} are the parameters previously defined.

The reaction time score for shifting a gearbox as a function of a gearshift indicator Co, 6 evaluates the reactivity of the driver CDo to shift to a higher gearbox as a function of l 'GSI indicator (from the English “Gear Shift Indicator”) signaled to the driver for example by display on the dashboard, when the vehicle Vo is traveling on the identified road segment SR _X. The GSI indicator informs the driver when it is necessary to shift up or downshift. When the vehicle Vo travels the road segment SR _X , an evaluation value or score “score _3Jn ” of reactivity to the GSI indicator, is calculated using the following expression, from data extracted from the data DATA2 (Vo, Tab):

score _c o, 6

Cumulative bitter LUmul reaction time. __

-------------------------------- * 100

C1ΖΤΠ1Ζ l f ίγγι ^ γ

OR

- the "cumulative _timer " parameter represents a reference reaction time limit which is fixed for example at 4 seconds;

- the cumulative _reaction time variable corresponds to the effective reaction time of the driver CD ₀ measured between the instant of display of the GSI indicator informing the driver CD ₀ that it is necessary to shift to a higher gear and the instant at which the driver CD ₀ effectively shifts up.

The overspeed driving score Co, 7 evaluates overspeed driving, that is to say at an engine speed greater than an optimal theoretical speed which is a function of the current speed of the vehicle Vo and of the gearbox ratio gear engaged. When the vehicle Vo travels the identified road segment SRx, an evaluation value or driving score without overspeed is calculated using the following expression, from data extracted from the DATA2 data (Vo, Tab):

_ Distance without overspeed _4nn score Ç Q7 * --------------------- J. uu distance _tota i _e where the variable "distance _{without overspeed"} corresponds to the total distance measured, traveled by the vehicle Vo when it is not in overspeed along the road segment SRx;

- The parameter "remote _totcae" is the total distance traveled by the vehicle on the RX road segment.

After the step E4 of calculating the scores of the vehicle Vo on the identified road segment SRx, the method comprises a comparison step E5 during which the server S compares each of the scores calculated for the driver CDo driving the vehicle Vo on the road segment identified SRx to other scores stored in memory and previously obtained for the same driving behavior component and on the same road segment. These other scores may have been obtained by other CDk drivers and / or Vk vehicles or by the same CDo driver or Vo vehicle.

The comparison results can be displayed on an Internet page accessible to the driver CDo. Preferably, the information that can be shared between users of the tracking service does not include sensitive and / or confidential information such as the vehicle registration number, recording hours, etc., for the purpose of protecting privacy. conductors.

Preferably, the present invention can not be used for the comparison of record data relating to a parameter such as the maximum speed for example.

With reference to FIG. 2, the tracking server S comprises the following elements:

an interface 1 for connection to the network 100;

- a module 2 for recording conductor profiles, comprising a memory 3 for storing these profiles;

a module 4 for receiving and recording in a storage memory 5 o of driver profile data, o of location data and of operating data of a vehicle on a journey, through a communication network,

a module 6 for storing predefined road segments;

an identification module 7 arranged to identify, on a route traveled by a vehicle, a road segment belonging to the set of predefined road segments stored in memory, from received location data,

- a calculation module 8 arranged to calculate one or more scores quantifying or evaluating a component of the driving behavior of a vehicle driver on an identified road segment, from received vehicle operating data;

a comparison module 9 arranged to compare each calculated score of the driver or vehicle on the identified road segment with scores previously obtained by other drivers or vehicles for the same driving behavior component and on the same road segment, these previously obtained scores 10 being stored in memory (for example by the storage module 5).

The server S is arranged to implement the steps E3, E4 and E5 previously described. The identification module 6, the calculation module 7 and the comparison module 8 are more specifically designed to implement steps E3, E4 and E5 respectively.

Claims (10)

1. Method for monitoring the driving activity of a driver (CDo) of a motor vehicle (Vo), comprising - a recording step (E1) consisting in recording location data (DATAI (Vo, Tab)) and operating data (DATA2 (Vo, Tab)) of the vehicle on a path (Tab) of said vehicle; a transmission step (E2) during which said location data (DATAI (Vo, Tab)) and said operating data (DATA2 (Vo, Tab)) of the vehicle (Vo) on said journey are transmitted to a server remote monitoring (S), through a communication network (100), an identification step (E3) during which the tracking server identifies on said path (Tab) a road segment (SRx) belonging to a set of road segments (SRn) stored in said server (S), from said location data (DATAI (Vo, Tab)) transmitted, a calculation step (E4) during which the tracking server (S) calculates a driving score quantifying a component of the driving behavior of said driver (CDo) on said identified road segment (SRx), from data from operation (DATA2 (Vo, Tab)) of the vehicle; a comparison step (E5) during which the tracking server (S) compares the driving score calculated for said driver (CDo) on the identified road segment (SRx) with other driving scores stored in memory and previously obtained for said driving behavior component on the same road segment (SRx). 2. Method according to claim 1, characterized in that said other driving scores were previously obtained by said driver (CDo) and / or by other drivers (CDk). 3. Method according to claim 1, characterized in that, during the calculation step (E4), the tracking server (S) calculates the driving score quantifying at least one of the components of driving behavior of the group comprising - energy consumption; - regularity of conduct - freewheeling; - a line with engine brake, in the case of a mechanical gearbox; - driving with activation of a braking system; - a reaction time to shift a gearbox according to a gear change indicator; - overspeed driving. 4. Method according to one of the preceding claims, characterized in that, during the recording step (E1), operating data (DATAI (Vo, Tab)) of the vehicle relating to one are recorded. less group parameters including speed, instantaneous energy consumption, average energy consumption, engine speed, gearbox reports. 5. Method according to one of the preceding claims, characterized in that, during the calculation step (E4), the tracking server (S) calculates a plurality of driving scores quantifying respectively a plurality of components of the behavior of conduct of the driver on said identified road segment (SRx). 6. Method according to one of the preceding claims, characterized in that the location data (DATAI (Vo, Tab)) and the operating data (DATA2 (Vo, Tab)) of the vehicle (Vo) are recorded in a memory local vehicle (Vo) and, upon detection near the vehicle of a radio terminal belonging to a network of radio terminals dedicated to the collection of vehicle data, said location and operating data recorded in the local memory are transmitted by channel radio terminal detected. 7. Method according to one of claims 1 to 4, characterized in that the location data (DATAI (Vo, Tab)) and the operating data (DATA2 (Vo, Tab)) of the vehicle are transmitted from the vehicle (Vo ) to a mobile communication terminal present in the vehicle then from the mobile communication terminal to the remote server (S) through said communication network (100). 8. Method according to one of claims 1 to 4, characterized in that the location data (DATAI (Vo, Tab)) and the operating data (DATA2 (Vo, Tab)) of the vehicle (Vo) are recorded in a removable storage medium connected to the vehicle, said storage medium is then disconnected from the vehicle and then connected to a communication device itself connected to the communication network (100) in order to transmit said location data (DATAI (Vo, Tab) ) and operating (DATA2 (Vo, Tab)) to the remote server (100). 9. Method according to one of claims 1 to 4, characterized in that, the vehicle (Vo) being connected to said communication network (100), the location data (DATAI (Vo, Tab)) and the operating data (DATA2 (Vo, Tab)) of the vehicle (Vo) are transmitted directly from the vehicle (Vo) to the tracking server (S). 10. Server (S) for monitoring the driving behavior of a plurality of drivers, comprising - a module (6) for storing a set of predefined road segments; - a module (4) for receiving location data and operating data from a vehicle on a journey, through a communication network (100); - an identification module (7) arranged to identify on said journey a road segment belonging to the set of stored road segments, from said transmitted location data; - a calculation module (8) arranged to calculate a driving score quantifying a component of the driving behavior of a driver of said vehicle on said identified road segment, from vehicle operating data; a comparison module (9) arranged to compare the driving score calculated for said driver (CDo) on the identified road segment (SRx) with other driving scores stored in memory and previously obtained for said behavior component of driving on the same road segment (SRx).