METHOD OF COMMUNICATION BETWEEN AN ON-BOARD NAVIGATION SYSTEM OF A MOTOR VEHICLE AND A SOFTWARE INTERFACE FOR A PREDETERMINED ROUTE

Abstract

The invention relates to a method of communication between an on-board navigation system and a software interface for a route comprising the following steps: a verification step (E1) in order to determine whether said on-board navigation system has a second optimization algorithm; a transmission step (E2) of a starting point and an arrival point of said route to said on-board navigation system if said vehicle has the second optimization algorithm; a programming step (E3) of reloading by said second optimization algorithm if said vehicle has the second optimization algorithm; a planning step (E4) of reloading by said first optimization algorithm if said vehicle does not have the second optimization algorithm; a sending step (E5) of said route to said on-board navigation system if said vehicle does not have the second optimization algorithm;a step of displaying (E6) said route on said screen. Figure 1;

Description

Title of the invention: METHOD FOR COMMUNICATION BETWEEN AN ON-BOARD NAVIGATION SYSTEM OF A MOTOR VEHICLE AND A SOFTWARE INTERFACE FOR A PREDETERMINED ROUTE

[0001] The invention relates to the means for guiding a user in his electric or hybrid motor vehicle on a given route, and more particularly to the integration of a time for recharging said vehicle on said route.

[0002] Known from the prior art is a patent application WO202250944 which describes a system allowing the identification of several electric charging stations between a location point corresponding to the departure location and a location point corresponding to the destination. The system makes it possible to generate a route comprising an additional period of time compared to the period of time necessary to travel the route provided. The additional period of time is a period during which the electric motor vehicle will be able to go to an electric charging station in order to recharge the electric battery of said vehicle. The system is capable of detecting the additional amount of charge necessary to travel said route.Furthermore, the system comprises a means for determining a relationship between the additional time period and the amount of charge that the electric motor vehicle receives during this additional time period. However, disadvantages remain. Indeed, the driver of the vehicle must enter the location points allowing the generation of the route directly on an interface in said vehicle. He cannot plan his journey from another location, using his mobile terminal, for example from his cell phone. In addition, the invention makes it possible to add an additional duration to the journey allowing the vehicle to be recharged at a charging station, however it is not mentioned that the stations are filtered so that the charging station chosen by the driver is the most optimal to reduce the journey time as much as possible.

[0003] The objective of the present invention is to overcome these drawbacks by proposing a method of communication between an on-board navigation system of said vehicle and an off-board software interface for planning a route during which recharging of the vehicle is necessary.

[0004] To achieve this objective, the invention proposes a method of communication between an on-board navigation system of an electric or hybrid motor vehicle and a software interface implemented by a mobile terminal for a predetermined route to be traveled by said vehicle, said route comprising a starting point and an arrival point, said vehicle comprising a dashboard comprising a screen, said software interface comprising a first algorithm for optimizing said route, characterized in that said method comprises the following steps: - a step of verifying the presence of a second optimization algorithm in said on-board navigation system by said software interface; - a step of transmitting a starting point and an arrival point of said route from said software interface to said on-board navigation system and a step of programming the reloading of said vehicle on said route by said second optimization algorithm when said second optimization algorithm is present in said on-board navigation system; - a step of planning the reloading of said vehicle on said route by said first optimization algorithm of said software interface and a step of sending said route from said software interface to said on-board navigation system when said second optimization algorithm is not present in said on-board system; - a step of displaying said route on said screen.

[0005] Thanks to the invention, the route is planned from the mobile terminal and its transfer to the on-board navigation system does not result in the unwanted addition of one or more additional reloads.

[0006] Advantageously, when the second optimization algorithm is not present in said on-board navigation system, said method comprises a step of updating said route by said first optimization algorithm when the time elapsed between a first time and a second time is greater than a threshold value, the first time being the time at which said planning step is executed and the second time being the time at which said sending step is executed.

[0007] Advantageously, said threshold value is equal to 30 minutes.

[0008] Preferably, said threshold value is equal to 15 minutes.

[0009] Thus, the user plans the route in advance on said application without this leading to the prediction of a recharging which no longer optimizes the route, due to an increase in traffic around said recharging station for example.

[0010] Advantageously, said vehicle comprising a Bluetooth connection means, said verification step is carried out by Bluetooth connection.

[0011] Advantageously, said vehicle comprising a Bluetooth connection means, said transmission step is carried out by Bluetooth connection.

[0012] Advantageously, said vehicle comprising a Bluetooth connection means, said sending step is carried out by Bluetooth connection.

[0013] Bluetooth connection is an efficient and fast means of telecommunication implement.

[0014] The invention also relates to a computer program comprising instructions which, when the program is executed by a computer, cause the latter to implement the steps of said method of communication between an on-board navigation system of an electric or hybrid motor vehicle and a software interface implemented by a mobile terminal for a predetermined route previously described.

[0015] Furthermore, the invention relates to an electric or hybrid motor vehicle implementing said method of communication between an on-board navigation system of an electric or hybrid motor vehicle and a software interface implemented by a mobile terminal for a predetermined route previously described.

[0016] The invention will be further detailed by the description of a non-limiting embodiment, and on the basis of the appended figure illustrating the invention, in which [Fig.l] schematically illustrates, in the form of a flowchart, a method of communication between an on-board navigation system of an electric or hybrid motor vehicle and a software interface implemented by a mobile terminal for a predetermined route according to an embodiment of the invention.

[0017] [Fig.l] schematically illustrates, in the form of a flowchart, a method of communication between an on-board navigation system of an electric or hybrid motor vehicle and a software interface implemented by a mobile terminal for a predetermined route. The route comprises a starting point and an arrival point. The vehicle comprises a dashboard comprising a screen, touch-sensitive or not, allowing in particular the display of GPS navigation (acronym meaning in English "Global Positioning System"). In addition, the vehicle comprises an on-board navigation system. The vehicle communicates with the software interface implemented by a mobile terminal with which computer and internet navigation functions are associated. In one embodiment, the mobile terminal is a cell phone. The software interface presents a first route optimization algorithm.The objective of the first optimization algorithm is to select the electric charging station at which said vehicle is capable of being recharged in a minimum amount of time. The first optimization algorithm therefore processes data concerning the occupancy rate of the charging stations or concerning road traffic to reach the charging station, for example. During a verification step E1, said software interface and said on-board navigation system exchange information in order to determine whether said on-board navigation system has a second optimization algorithm. The second optimization algorithm works exactly like the first optimization algorithm and extracts the same information from it. Obtaining . this information concerning the presence or absence of said second optimization algorithm is necessary for the continuation of said method. Preferably, said vehicle comprises a Bluetooth connection means and said verification step E1 is carried out by Bluetooth connection. The Bluetooth connection is a wireless telecommunication means using UHF radio waves (acronym meaning Ultra High Frequency) on the 2.4 GHz frequency band. The Bluetooth connection corresponds to the exchange of digital information between two distinct digital entities without a wired connection between the two digital entities. The pairing of a mobile terminal to the vehicle by Bluetooth connection is now very widespread, and therefore easily implemented by a user of the vehicle.If said on-board navigation system has a second optimization algorithm, during a transmission step E2, the route established by said software interface is transmitted to said on-board navigation system. During a programming step E3, the recharging of said vehicle with electrical energy is programmed by said second optimization algorithm. Conversely, if the on-board navigation system does not include the second optimization algorithm, then during a planning step E4, the first optimization algorithm of said software interface plans the recharging of said vehicle with electrical energy on said route. During a sending step E5, said route is transmitted from said software interface to said on-board navigation system.During a display step E6, at the end of said programming step E3 or said sending step E5, the route is displayed on said screen so that the driver of said vehicle can be guided during the journey. In the prior art, the problem is the lack of communication between the first optimization algorithm and the second optimization algorithm. Indeed, if said route is transmitted to the vehicle after the planning of the recharging of the vehicle and said vehicle includes the second optimization algorithm, then the consequence is the interpretation of said recharging step as a location point which the user wants to reach in the same way as a location point corresponding to the destination. To avoid the electrical discharge of the vehicle, the second optimization algorithm then plans at least one recharging, which lengthens the estimated duration of the journey.Several reloads of said vehicle are then provided which are not necessary for traveling the route. The present invention overcomes this problem by detecting upstream whether or not said vehicle includes the second optimization algorithm and by adapting the transmitted route according to the result, by transmitting the starting point and the arrival point of said route if the vehicle includes the second optimization algorithm, or by transmitting said route in its entirety, i.e. the starting point, the arrival point and the intermediate reloading points if the vehicle does not include the second optimization algorithm. In one embodiment, the on-board navigation system automatically determines the starting point by geolocation. Advantageously, said vehicle comprises the Bluetooth connection means and said transmission step E2 and / or said sending step E5 is carried out by Bluetooth connection. In an alternative embodiment, said planning step E4 is carried out at a time TO and said sending step E5 of said route is carried out at a time T1. If the time elapsed between TO and T1 is greater than a threshold value, then a step of updating said route is executed by said first optimization algorithm. Advantageously, said threshold value is equal to 30 minutes, or even preferably 15 minutes. Thus, if road traffic is denser at the time of the sending step E5 than at the time of the planning step E4, then said route is modified so as to optimize the journey time.The invention also relates to a computer program implementing the method described above. Furthermore, the invention relates to an electric or hybrid motor vehicle implementing said method described above.

Claims

Claims

1. Method of communication between an on-board navigation system of an electric or hybrid motor vehicle and a software interface implemented by a mobile terminal for a predetermined route to be traveled by said vehicle, said route comprising a starting point and an arrival point, said vehicle comprising a dashboard comprising a screen, said software interface comprising a first algorithm for optimizing said route, characterized in that said method comprises the following steps: - a step of verifying (El) the presence of a second optimization algorithm in said on-board navigation system by said software interface;- a step of transmitting (E2) the starting point and the arrival point of said route from said software interface to said on-board navigation system and a step of programming (E3) the reloading of said vehicle on said route by said second optimization algorithm when said second optimization algorithm is present in said on-board navigation system; - a step of planning (E4) the reloading of said vehicle on said route by said first optimization algorithm of said software interface and a step of sending (E5) said route from said software interface to said on-board navigation system when said second optimization algorithm is not present in said on-board system; - a step of displaying (E6) said route on said screen.;

2. Method according to claim 1 characterized in that, when the second optimization algorithm is not present in said on-board navigation system, said method comprises a step of updating said route by said first optimization algorithm when the time elapsed between a first time (TO) and a second time (Tl) is greater than a threshold value, the first time (TO) being the time at which said planning step (E4) is executed and the second time (Tl) being the time at which said sending step (E5) is executed.

3. Method according to claim 2, characterized in that said threshold value is equal to 30 minutes.

4. Method according to claim 2 characterized in that said threshold value is equal to 15 minutes.

5. Method according to any one of claims 1 to 4, said vehicle comprising a Bluetooth connection means, characterized in that said verification step (El) is carried out by Bluetooth connection.

6. Method according to any one of claims 1 to 5, said vehicle comprising a Bluetooth connection means, characterized in that said transmission step (E2) is carried out by Bluetooth connection.

7. Method according to any one of claims 1 to 6, said vehicle comprising a Bluetooth connection means, characterized in that said sending step (E5) is carried out by Bluetooth connection.

8. Computer program comprising instructions which, when the program is executed by a computer, cause the latter to implement the steps of said method of communication between an on-board navigation system of an electric or hybrid motor vehicle and a software interface implemented by a mobile terminal for a predetermined route according to any one of claims 1 to 7.

9. Electric or hybrid motor vehicle implementing said method of communication between an on-board navigation system of an electric or hybrid motor vehicle and a software interface implemented by a mobile terminal for a predetermined route according to any one of claims 1 to 7.

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