Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
  • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
  • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
  • B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
• • G—PHYSICS
  • G07—CHECKING-DEVICES
  • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
  • G07C5/00—Registering or indicating the working of vehicles
  • G07C5/008—Registering or indicating the working of vehicles communicating information to a remotely located station
• • G—PHYSICS
  • G07—CHECKING-DEVICES
  • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
  • G07C5/00—Registering or indicating the working of vehicles
  • G07C5/02—Registering or indicating driving, working, idle, or waiting time only
• • G—PHYSICS
  • G07—CHECKING-DEVICES
  • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
  • G07C9/00—Individual registration on entry or exit
  • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
  • G07C9/00309—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with bidirectional data transmission between data carrier and locks
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
  • Y02T10/00—Road transport of goods or passengers
  • Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
  • Y02T10/92—Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles

Definitions

• the invention relates to a method and a device for determining a waiting time of at least one computer of a vehicle, in particular a motor vehicle.
• Contemporary vehicles carry several computers each providing one or more functions, such as, for example, management of driving assistance, traction control, electronic brake distribution or even actuator control to ensure optimal operation. of the vehicle's engine. These computers are also called UCE ("Electronic Control Unit” or in English ECU “Electronic Control Unit”). These computers embed software which is executed to perform the functions for which they are responsible.
• UCE Electronic Control Unit
• ECU Electronic Control Unit
• the vehicle's ignition system also called the ignition switch
• the vehicle's computers enter a standby phase which lasts approximately 15 seconds. Actuation of the contact system during this standby phase causes premature wear of certain electronic components of the computers.
• a waiting time prior to standby is provided between switching off the ignition system and the start of the standby phase of each computer. This waiting time has been set at a few tens of seconds, typically 45 seconds, and is provided so that the computers remain on until the end of the waiting time when they can then implement the standby phase. .
• the computers are activated electrically or electronically (for example when opening or closing a door, when locking or unlocking the vehicle), the waiting time is initialized and start again.
• the computers can remain energized for a few minutes and at least for 45 seconds after switching off the ignition system, which results in a significant consumption of electrical energy for the vehicle.
• An object of the present invention is to optimize the power consumption of a vehicle at rest and the lifespan of the vehicle's computers.
• the invention relates to a method for determining a waiting time of at least one vehicle computer, the waiting time corresponding to the time elapsed between a command to put the at least one computer on standby. and putting the at least one computer on standby, the method comprising the following steps, for each vehicle of a set of vehicles comprising at least one vehicle:
• each duration being determined from a first piece of information representative of the locking of the engine vehicle off and d a second item of information representative of the unlocking of the vehicle, the first item of information and the second item of information each being associated with a detection of triggering of the vehicle's turn signals;
• the first item of information corresponds to a time instant corresponding to the detection of the triggering of the turn signals of the vehicle following a cut-off of a vehicle ignition system and the second item of information corresponds to a time instant corresponding to the detection of the triggering of the turn signals. of the vehicle before the ignition of the vehicle's ignition system.
• the first item of information corresponds to a time instant corresponding to the detection of the first triggering of the vehicle's turn signals following a cut-off of a vehicle ignition system and the second item of information corresponds to a time instant corresponding to a second detection of the vehicle. triggering of the indicators following the first triggering.
• the second information corresponds to a time instant corresponding to a second detection of the triggering of the flashing lights following the first triggering if a time elapsed between the first triggering and the second triggering is greater than a threshold.
• the method further comprises a step of receiving the first information and the second information.
• the determination of the wait time comprises a statistical analysis of the duration set and an adjustment of a predetermined value of the wait time according to a result of the statistical analysis.
• the waiting time is set to a value less than the predetermined value when a percentage of durations of the set less than the value is greater than a threshold.
• the method further comprises a step of updating the waiting time of the vehicle.
• the invention relates to a device for determining a waiting time of at least one vehicle computer, the waiting time corresponding to the time elapsed between a command to put the at least one computer on standby. and an implementation of the at least one computer on standby, the device comprising a processor configured for the implementation of the steps of the method according to the first aspect of the invention.
• the invention relates to a computer program which comprises instructions adapted for the execution of the steps of the method according to the first aspect of the invention, this in particular when the computer program is executed by at least one. processor.
• a computer program can use any programming language, and be in the form of a source code, an object code, or an intermediate code between a source code and an object code, such as in a partially compiled form, or in any other desirable form.
• the invention relates to a recording medium readable by a computer on which is recorded a computer program comprising instructions for carrying out the steps of the method according to the first aspect of the invention.
• the recording medium can be any entity or device capable of storing the program.
• the medium may comprise a storage means, such as a ROM memory, a CD-ROM or a ROM memory of the microelectronic circuit type, or else a magnetic recording means or a hard disk.
• this recording medium can also be a transmissible medium such as an electrical or optical signal, such a signal being able to be conveyed via an electrical or optical cable, by conventional or hertzian radio or by self-directed laser beam or by other ways.
• the computer program according to the invention can in particular be downloaded over an Internet-type network.
• the recording medium can be an integrated circuit in which the computer program is incorporated, the integrated circuit being adapted to execute or to be used in the execution of the method in question.
• FIG. 1 schematically illustrates a system configured to determine the waiting time for computers for one or more vehicles, according to a particular embodiment of the present invention
• FIG. 2 schematically illustrates a chronogram of events detected for one or more vehicles of the system of FIG. 1, according to a particular embodiment of the present invention
• FIG. 3 schematically illustrates a device for determining a waiting time of at least one computer of a vehicle of FIG. 1, according to a particular embodiment of the present invention
• FIG. 4 illustrates a flowchart of the various steps of a method for determining a waiting time of at least one computer of a vehicle of FIG. 1, according to a particular embodiment of the present invention.
• a method for determining a waiting time for one or more computers comprises determining the time elapsed between the locking and unlocking of a vehicle, a once the contact is deactivated (i.e. engine off). This determination is implemented for a set of locks / unlocks for one or more vehicles. Locking and unlocking of the vehicle are advantageously detected from the triggering of the vehicle's turn signals, with the ignition deactivated (or "off" in English). A set of durations is thus obtained, each duration being obtained for a pair of locking / unlocking events of one or more vehicles. The durations of the assembly obtained are analyzed to determine the optimal waiting time to be applied to the vehicle (s).
• the waiting time of a computer advantageously corresponds to a parameter defined to keep a computer awake for a determined period (equal to the time waiting time), before switching off or putting the computer on standby.
• This waiting time is designed to protect the electronic components of a computer from premature wear following a restart of the computer when the latter has started the standby phase.
• Determining the waiting time to be applied to a computer from empirical data representing the time elapsed between several pairs of events each corresponding to the locking and unlocking of one or more vehicles, with the ignition off, makes it possible to best adjust the waiting time, which makes it possible to find a compromise between reducing electricity consumption and reducing the risk of premature wear of the computer.
• FIG. 1 schematically illustrates a system 1 configured to determine the waiting time of computers for one or more vehicles, according to a particular and non-limiting embodiment of the present invention.
• the system 1 comprises for example a set 100 of vehicles 10 to 12.
• the set 100 comprises three vehicles, namely a first vehicle 10, a second vehicle 11 and a third vehicle 12.
• the number of vehicles included in the set 100 is however not limited to this example.
• the assembly 100 includes only one vehicle, for example the first vehicle 10.
• the assembly 100 includes 10, 20, 50, 100, 1000 or more vehicles.
• the number of vehicles included in the set 100 is any, between 1 vehicle and several thousand vehicles.
• Data is advantageously collected from each vehicle 10 to 12 of the set 100. This data is for example collected via a wireless link or a wired link.
• the data is for example collected by one or more devices (for example a server) of the “cloud” 102 (or “cloud” in French), for example via an OTA type link (standing for “over-the-air”). ", Or in French” by air ").
• the data is collected by an external device 101, for example a diagnostic device or a computer, this device being for example connected to each vehicle 10 to 12 via a wired connection, for example of the Ethernet type.
• the data is received from the vehicles 10 to 12 by the device 101 via wireless links, for example links of the Bluetooth® and / or Wifi® type.
• the data collected by the device 101 are for example transmitted to one or more devices of the “cloud” 102, via a wireless link or a wired link or a combination of several links combining wired and wireless.
• the data collected advantageously correspond to data collected at the level of each vehicle 10 to 12 of the assembly 100.
• the data correspond for example to information representative of particular events detected or reported by one or more computers linked together by a bus.
• CAN type data standing for “Controller Area Network” or in French for “Controllers Network”
• CAN FD standing for “Controller Area Network Flexible Data-Rate” or in French “Network of flow controllers flexible data ”
• FlexRay standardized by ISO 17458
• Ethernet standardized by ISO / IEC 802-3
• the data collected advantageously correspond to data relating to the switching off and switching on of the ignition system as well as the activation of the turn signals (also called direction change indicators) of the vehicle once the ignition system has been switched off or off.
• These data advantageously correspond to the time-stamping of the events mentioned thanks to the feedback from the TCU (BTA and / or BSRF box).
• FIG. 2 schematically illustrates a timing diagram 2 of events detected for each vehicle of the assembly 100, according to a particular and non-limiting exemplary embodiment of the present invention.
• FIG. 2 illustrates a series of events detected as a function of time "t" by one or more computers of the on-board system of a vehicle, for example vehicle 10, some of these events being reported by the TCU unit.
• the first event 21 corresponds to the switching off (also called deactivation and / or deactivation) of the vehicle's ignition system 10, for example via an ignition key or by pressing a dedicated switch.
• Such an event generates the transmission of a setpoint on the data bus connecting the computers so that the computers enter a standby phase.
• each computer concerned launches a waiting time of a predetermined duration (for example 45 or 60 seconds), during which time each computer remains active before executing the instruction and activating the phase. standby mode which allows the computers to go to rest.
• a first waiting time begins when the contact system 21 is switched off.
• the second event 22 corresponds for example to the detection of the opening of a door of the vehicle 10 (for example when the driver or the driver of the vehicle 10 leaves the vehicle 10). The detection of such an event resets to 0 (initializes) the waiting time which is therefore started again for 45 or 60 seconds upon detection of event 22. Such an event is not transmitted by the unit. TCU.
• the third event 23 corresponds for example to the detection of the closing of a door of the vehicle 10 (for example when the driver or the driver of the vehicle 10 has left the vehicle 10 and closes the door). The detection of such an event resets to 0 (initializes) the waiting time which is therefore started again for 45 or 60 seconds upon detection of the event 23. Such an event is not transmitted by the unit. TCU.
• the fourth event 24 corresponds for example to the detection of the activation of the turn signals of the vehicle 10, advantageously to the detection of all the turn signals of the vehicle 10.
• This event marks the locking of the vehicle 10 by the driver. 10, for example by means of a key connected to the hands-free access and starting system (ADML) of the vehicle 10, such a locking automatically causing the activation of the turn signals of the vehicle 10.
• the detection of such an event resets to 0 (initializes) the waiting time which is therefore started again for 45 or 60 seconds upon detection of event 24.
• the fifth event 25 corresponds for example to the detection of the activation of the turn signals of the vehicle 10, advantageously to the detection of all the turn signals of the vehicle 10.
• This event marks the unlocking of the vehicle 10 by the driver. 10, for example by means of a key connected to the hands-free access and starting system (ADML) of the vehicle 10, such unlocking automatically causing the turn signals of the vehicle 10 to be activated. Unlocking the vehicle controls the alarm clock. computers so that the latter perform their function (s).
• the sixth event 26 corresponds to the ignition (power on) of the vehicle's ignition system 10, for example via an ignition key or by pressing a dedicated switch.
• the TCU advantageously transmits information or a set of information representative of each of the events 24 and 25 to the external device 101 and / or to the "cloud" 102.
• the information set includes, for example, the following information:
• the TCU unit also transmits information identifying the vehicle for which the events were detected.
• the external device 101 and / or one or more devices (for example servers) of the “cloud” 102 receive a set of data or information relating in particular to the detection of the activation of the turn signals of each of the vehicles 10 to 12 of the. 'assembly 10, as well as the deactivation of the contact system and the activation (also called ignition) of the contact system. These data or information are advantageously recorded or stored in the memory of these devices or in storage spaces associated with these devices.
• a set of first information each representative of the locking of a vehicle are thus received or collected and a set of second information each representative of the unlocking of a vehicle are also received or collected.
• each first item of information is associated with the detection of the triggering of the turn signals (event 24) and each second item of information is associated with the detection of the triggering of the turn signals (event 25).
• Each of the first and second items of information comprises time information corresponding to the instant at which the associated event (triggering of the flashing lights) was detected.
• the duration (the time) elapsed between locking and unlocking of the vehicle is determined on the basis of these first and second items of information. For example, returning to the example of FIG. 2, the duration between the detection of event 24 and the detection of event 25 corresponds to the time interval At 201.
• a set of durations 201 is thus determined and for example stored in memory.
• Locking of a vehicle is advantageously determined from the information of detection of the triggering of the turn signals (event 24) following (from a temporal point of view) the detection of the cut (also called deactivation) of the ignition system. vehicle (event 21).
• Unlocking of a vehicle is advantageously determined from the information for detecting the triggering of the turn signals (event 25) preceding (from a temporal point of view) the detection of the ignition of the vehicle's ignition system (event 26 ).
• the unlocking of the vehicle is determined from the information of detection of the triggering of the turn signals (event 25) following (from a temporal point of view) the detection of the triggering of the turn signals (event 24) which is - even follows the detection of the cut in the vehicle's ignition system (event 21).
• the time interval separating two successive flashing lights is compared to a threshold (for example 1, 2 or 3 seconds). If the time interval is less than this threshold then it is determined that the triggering of the turn signals corresponds to the triggering of the hazard lights and not to the locking / unlocking of the vehicle. If the time interval is greater than this threshold, then it is determined that the triggering of the turn signals corresponds to the locking / unlocking of the vehicle.
• the various determined durations 201 are analyzed to verify that the waiting time implemented by default (predetermined value of 45 or 60 seconds for example) is suitable for use.
• a statistical analysis of the set of determined durations 201 is for example implemented. To this end, each duration of the set is compared with a first duration threshold value.
• a first duration threshold value is advantageously equal to the sum of the waiting time and the time of the standby phase, for example equal to 45 seconds + 15 seconds, ie 60 seconds. According to another example, this first threshold value is equal to 2, 3, 5 or 10 times the sum of the waiting time and the time of the standby phase.
• a waiting time of 20 seconds (or 20 seconds plus a safety margin of a few seconds, for example 5 or 10 seconds) would be sufficient to prevent a computer from being reactivated by unlocking the vehicle when it has entered the standby phase.
• a new waiting time value is determined for which there is a percentage of determined durations 201 less than this new waiting time value, a percentage which would be greater than the first threshold value or a second threshold value (different from the first).
• a safety value is added to this new threshold value to obtain the waiting time implemented in vehicles 10 to 12 of the assembly 100.
• the value of the waiting time is thus adjusted, for example by means of an update of the computers of the on-board system of each vehicle 10 to 12 of the assembly 100, either via a wired link or via a connection of OTA type. According to a particular example, this new value of waiting time is set by default in vehicles leaving the factory and newly placed on the market.
• the value predetermined waiting time for example 45 seconds
• the durations is performed to determine which wait time would be more suitable and to determine if a longer wait time would not be better suited so that the percentage of durations greater than a value of longer waiting time becomes greater than the first threshold value again.
• the value of the waiting time is adjusted to 75 or 100 seconds.
• the adjustment is made for example by means of an update of the computers of the on-board system of each vehicle 10 to 12 of the assembly 100, either via a wired link or via an OTA type link.
• this new waiting time value is set by default in vehicles leaving the factory and newly placed on the market.
• an analysis of the durations is carried out for each vehicle (or for each category of vehicles) and not for the whole to adjust, if necessary, the waiting time of each vehicle (or category of vehicles) rather than for all vehicles.
• a sorting of the data is carried out using the identification information of the vehicles received.
• the analysis of the durations is carried out by a computer of each vehicle, without the information representative of the locking and unlocking being transmitted to the external device 101 and / or to the “cloud” 102.
• each vehicle determines which waiting time is the most suitable for it depending on the uses of this particular vehicle.
• FIG. 3 schematically illustrates a device 3 configured to determine a waiting time of at least one vehicle computer, according to a particular and non-limiting embodiment of the present invention.
• the device 3 is for example configured for carrying out the operations described with reference to FIGS. 1 and 2 and / or the steps of the method described with reference to FIG. 4.
• Examples of such a device 3 include, without being there limited, a computer, a server, a vehicle diagnostic device, a smart phone, a tablet, a laptop, on-board electronic equipment such as an on-board computer of a vehicle , an electronic computer such as a UCE, a telematic control unit TCU (standing for “Telematic Control Unit”).
• the elements of the device 3, individually or in combination, can be integrated in a single integrated circuit, in several integrated circuits, and / or in discrete components.
• the device 3 can be produced in the form of electronic circuits or software (or computer) modules or else a combination of electronic circuits and software modules. According to various particular embodiments, the device 3 is coupled in communication with other devices or similar systems, for example by means of a communication bus or through dedicated input / output ports.
• the device 3 comprises one (or more) processor (s) 30 configured to execute instructions for carrying out the steps of the method and / or for executing the instructions of the software (s) embedded in the device 3.
• the processor 30 can include integrated memory, an input / output interface, and various circuits known to those skilled in the art.
• the device 3 further comprises at least one memory
• a volatile and / or non-volatile memory and / or comprises a memory storage device which may comprise volatile and / or non-volatile memory, such as EEPROM, ROM, PROM, RAM, DRAM, SRAM, flash, magnetic or optical disc.
• volatile and / or non-volatile memory such as EEPROM, ROM, PROM, RAM, DRAM, SRAM, flash, magnetic or optical disc.
• the computer code of the on-board software (s) comprising the instructions to be loaded and executed by the processor is for example stored on the first memory 31.
• the device 3 comprises a block
• the interface elements of the block 32 include one or more of the elements. following interfaces:
• radiofrequency interface for example of the Bluetooth® or Wi-Fi® type, LTE (from English “Long-Term Evolution” or in French “Long-term Evolution”), LTE-Advanced (or in French LTE-advanced );
• USB interface from English “Universal Serial Bus” or “Bus Universel en Série” in French);
• Data is for example loaded to device 3 via the interface of block 32 using a Wi-Fi® network such as according to IEEE 802.11, or a mobile network such as a 4G network (or LTE Advanced according to 3GPP release 10 - version 10) or 5G.
• a Wi-Fi® network such as according to IEEE 802.11, or a mobile network such as a 4G network (or LTE Advanced according to 3GPP release 10 - version 10) or 5G.
• the device 3 comprises a communication interface 33 which makes it possible to establish communication with other devices, such as for example other servers or computers.
• the communication interface 33 corresponds for example to a transmitter configured to transmit and receive information and / or data via the communication channel 330.
• the communication interface 33 corresponds for example to a wired network of Ethernet type.
• the device 3 can supply output signals to one or more external devices, such as a display screen, one or more speakers and / or other peripherals respectively via interfaces output not shown.
• one or more external devices such as a display screen, one or more speakers and / or other peripherals respectively via interfaces output not shown.
• FIG. 4 illustrates a flowchart of the various steps of a method for determining a waiting time of at least one vehicle computer, according to a particular and non-limiting embodiment of the present invention.
• the method is advantageously implemented in the vehicle 10, the external device 101, a “cloud” server 102 and / or in the device 3.
• a set of durations each corresponding to a time elapsed between locking of the vehicle and unlocking of the engine vehicle switched off following the locking are determined.
• Each duration is advantageously determined from a first piece of information representative of the locking of the vehicle and a second piece of information representative of the unlocking of the vehicle, the first piece of information and the second piece of information each being associated with a detection of triggering of the vehicle's turn signals.
• a waiting time is determined as a function of the set of times obtained in step 41.
• the invention is not limited to the embodiments described above but extends to a method for controlling the standby of the computers of a vehicle, and to the device configured for the implementation of a such process.
• the invention also relates to a system comprising one or more vehicles 10 to 12 and an external device such as device 101 or a “cloud” device 102, each vehicle 10 to 12 being connected to the external device via one or more wired and / or wireless connections.
• an external device such as device 101 or a “cloud” device 102

Applications Claiming Priority (2)

Publications (1)

Family

ID=70008670

Family Applications (1)

Country Status (3)

Family Cites Families (5)

• 2019
  • 2019-11-27 FR FR1913289A patent/FR3103428B1/fr active Active
• 2020
  • 2020-10-21 EP EP20807079.7A patent/EP4065423A2/de active Pending
  • 2020-10-21 WO PCT/FR2020/051899 patent/WO2021105572A2/fr unknown

Also Published As

Similar Documents

Legal Events