WO2020135592A1 - 车辆驾驶模式控制方法和系统 - Google Patents

车辆驾驶模式控制方法和系统 Download PDF

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Publication number
WO2020135592A1
WO2020135592A1 PCT/CN2019/128716 CN2019128716W WO2020135592A1 WO 2020135592 A1 WO2020135592 A1 WO 2020135592A1 CN 2019128716 W CN2019128716 W CN 2019128716W WO 2020135592 A1 WO2020135592 A1 WO 2020135592A1
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WIPO (PCT)
Prior art keywords
vehicle
scene
driving
preset
driving mode
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Ceased
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PCT/CN2019/128716
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English (en)
French (fr)
Inventor
周申光
牛小锋
孙玉
何介夫
刘天培
巩欢笑
贾具宾
孙海涛
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Great Wall Motor Co Ltd
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Great Wall Motor Co Ltd
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Priority to RU2021122049A priority Critical patent/RU2763920C1/ru
Publication of WO2020135592A1 publication Critical patent/WO2020135592A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/06Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00Conjoint control of vehicle sub-units of different type or different function
    • B60W10/10Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
    • B60W10/11Stepped gearings
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W30/00Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
    • B60W30/18Propelling the vehicle
    • B60W30/182Selecting between different operative modes, e.g. comfort and performance modes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W40/00Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60WCONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W50/00Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W50/08Interaction between the driver and the control system
    • GPHYSICS
    • G08SIGNALLING
    • G08GTRAFFIC CONTROL SYSTEMS
    • G08G1/00Traffic control systems for road vehicles
    • G08G1/16Anti-collision systems

Definitions

  • the invention relates to the technical field of vehicles, in particular to a method and system for controlling the driving mode of a vehicle.
  • the driving mode control system includes an economy mode, a standard mode, and a sports mode.
  • the driver selects different driving modes to experience the different driving feelings brought by the vehicle, but in some cases Since the end customer does not understand the various modes, it is easy to appear that the driving mode selected by the customer does not match the actual driving behavior. In this case, the vehicle often cannot meet the driver’s expectations, and the set driving mode cannot Give full play to its advantages.
  • the driver has selected the economy mode but frequently presses deep, fast on the accelerator pedal and brake pedal during driving. In this case, the driver deeply depresses the accelerator pedal to get better acceleration performance, but in the economic mode, the power output of the engine is gentle and the transmission shift point is advanced.
  • the power output of the vehicle may not meet the driving
  • the existing intelligent driving mode recognition system is that the driver manually selects a certain driving mode. No matter whether the driving behavior of the driver matches the selected mode during the driving process, as long as the driver does not actively carry out the mode switching, the driving mode of the vehicle will not Change again, if the driver lacks understanding of various driving modes, it is easy to appear that the driving behavior does not match the selected mode and thus reduce the user experience.
  • the prior art mainly judges the driving mode based on two indicators, an objective indicator and a subjective indicator.
  • the objective indicators are mainly based on the dynamic driving index of the vehicle (using the vehicle speed, longitudinal acceleration, lateral acceleration, etc. to evaluate the degree of intense driving of the vehicle) to determine the most suitable driving mode;
  • the subjective indicators are based on the driver’s Behavior (operating the accelerator pedal, brake pedal, turn signal, etc.) to determine the driver's driving intention (if you want the vehicle to quickly output power to improve acceleration performance), and then automatically select the most suitable driving mode for the driver according to the driver's driving intention Among them, when judging the driving intention of the driver, the road environmental factors (urban roads, suburban roads, highways) are also taken into consideration in order to make the judgment result more accurate.
  • the dynamic driving index of the vehicle will gradually approach zero (representing the lowest degree of intense driving of the vehicle).
  • the driver can’t monitor the driver’s driving intention without operation, so the final result is that the vehicle will switch from the standard mode or the sports mode to the economic mode, but in fact the driver is forced to stop due to the traffic lights
  • the vehicle may not be expected to switch to the standard mode.
  • traffic congested roads due to environmental constraints, the vehicle travels slowly. At this time, the vehicle does not need a large power output, and the most ideal mode is the economic mode.
  • the driver wants to quickly improve the vehicle's power.
  • the most reasonable mode is the sports mode.
  • the vehicle is basically stationary, the dynamic driving index approaches zero, and according to the logic of the current intelligent driving mode recognition system, there is not enough driver input information (such as brake pedal input, steering wheel input) when the vehicle is stationary. , Accelerator pedal input, etc.) to determine the current mode.
  • driver input information such as brake pedal input, steering wheel input
  • the most common situation is that the dynamic driving index of the vehicle increases due to high acceleration and speed during overtaking or during the ejection start, and then the mode is switched to the sports mode, but the ejection starts Or the driver expects that the vehicle's mode can be switched to the sports mode at the first time when overtaking.
  • the present invention aims to propose a vehicle driving mode control method to at least partially solve the above technical problems.
  • a vehicle driving mode control method includes: identifying a driving scene of a vehicle; and controlling the vehicle to enter a corresponding driving mode according to the driving scene of the vehicle.
  • the driving scene includes a long-time parking lot scene, a traffic light scene, a traffic jam scene, a catapult start scene, and an overtaking scene
  • the driving scene of identifying a vehicle includes: recognizing a vehicle according to the number of parking times and speed of the vehicle Whether the vehicle is in one of the long-term parking lot scene, the traffic light scene and the traffic congestion scene; identifying whether the vehicle is in the vehicle according to the vehicle speed, gear position and accelerator pedal opening Ejection starting scene; and judging whether the vehicle is in overtaking scene according to the vehicle speed, turn signal signal, accelerator pedal opening, steering wheel angle and brake cylinder pressure.
  • the recognizing whether the vehicle is in the long-term parking lot scene, the iso-traffic light scene, and the traffic congestion scene according to the number of parking times and speed of the vehicle includes: When the number of stops is 1 and the vehicle speed is lower than the first condition of the preset speed threshold for entering the parking state, it is determined whether the first time that the first condition continues to be established is less than the preset time threshold for entering the parking state , If yes, identifying the driving scene as the equal traffic light scene, otherwise identifying the driving scene as the long-term parking lot scene; and/or corresponding to the case where the driving scene is the equal traffic light scene, When the vehicle is in the second condition where the vehicle speed is higher than the preset speed threshold value of the exit and other traffic lights, it is determined whether the second time when the second condition continues to be established exceeds the preset time of the exit and other traffic lights Threshold value, if yes, set the number of stops to 0, otherwise continue to count the number of stops of the vehicle, if the counted number of stops is 1, then identify the driving
  • the identifying whether the vehicle is in the ejection start scenario according to the vehicle speed, gear position and accelerator pedal opening includes: when the vehicle is at the vehicle speed less than a preset start speed threshold, When the gear position is the forward gear and the accelerator pedal opening degree is greater than or equal to the third threshold condition of the preset starting opening threshold value, it is determined whether the third time when the third condition continues to be established is less than or equal to the preset condition
  • the threshold value of the starting delay of, if it is, then the driving scenario is identified as the catapult starting scenario.
  • the judging whether the vehicle is in the overtaking scenario based on the vehicle's speed, turn signal, accelerator pedal opening, steering wheel angle, and brake cylinder pressure includes: when the vehicle is at a speed greater than a preset overtaking limit When the speed, the turn signal is in an activated state, and the accelerator pedal opening is greater than the preset overtaking opening threshold, determine whether the fourth time when the fourth condition continues to be established is greater than the preset overtaking threshold , If yes, continue with the following judgment:
  • the Whether the fifth time when the five conditions continue to be established is greater than a preset overtaking delay threshold, and if so, it is identified that the vehicle is in an overtaking scenario.
  • the driving mode includes an economic mode, a standard mode, and a sports mode with a power level from low to high
  • the controlling the vehicle to enter a corresponding driving mode according to the driving scenario of the vehicle includes: In the light scene, if the vehicle is in the standard mode or the sports mode, the vehicle is controlled to maintain the current driving mode; in the traffic congestion scenario, the driving mode of the vehicle with a higher power level than the current driving mode is prohibited Switching or controlling the vehicle to be in the economic mode; under the ejection start scenario and the overtaking scenario, controlling the vehicle to switch to the sports mode within a preset time.
  • the vehicle driving mode control method of the present invention combines driving scenarios to switch driving modes, which makes the switching of driving modes more reasonable, helps enrich the functions of the existing intelligent driving mode recognition system, and increases the system's Stability, enhance the driver's driving experience.
  • Another object of the present invention is to propose a vehicle driving mode control system to at least partially solve the above technical problems.
  • a vehicle driving mode control system includes: an identification module for identifying a driving scene of a vehicle; and a control module that controls the vehicle to enter a corresponding driving mode according to the driving scene of the vehicle identified by the identification module.
  • the driving scene includes a long-time parking lot scene, a traffic light scene, a traffic jam scene, a catapult start scene, and an overtaking scene.
  • the recognition module includes: a first recognition sub-module, which is used for according to the number of parking times of the vehicle And the vehicle speed to identify whether the vehicle is in one of the long-term parking lot scene, the traffic light scene and the traffic congestion scene; the second recognition submodule is used to determine whether the vehicle is based on the vehicle speed, gear position and The accelerator pedal opening degree identifies whether the vehicle is in the ejection starting scene; and the third identification submodule is used to identify the vehicle based on the vehicle speed, turn signal, accelerator pedal opening angle, steering wheel angle, and brake cylinder pressure Whether the vehicle is in the overtaking scene.
  • the first identification sub-module is used to identify whether the vehicle is in one of the long-term parking lot scene, the equal traffic light scene, and the traffic congestion scene according to the number of parking times and speed of the vehicle Including: when the vehicle is in the first condition with the number of stops being 1 and the vehicle speed is lower than the preset speed threshold for entering the parking state, determining whether the first time when the first condition continues to be established is less than the preset entry The time threshold of the parking state, if it is, then the driving scene is identified as the traffic light scene; otherwise, the driving scene is identified as the long-term parking lot scene; and the driving scene corresponds to the traffic In the case of a light scene, when the vehicle is in the second condition where the vehicle speed is higher than the preset speed threshold value of a traffic light state such as exit, it is determined whether the second time when the second condition continues to be established exceeds the preset exit The time threshold of waiting for traffic lights, if yes, set the number of stops to 0, otherwise continue to count the number of stops of the vehicle, and if the
  • the second identification sub-module is used to identify whether the vehicle is in the ejection starting scene according to the vehicle speed, gear position and accelerator pedal opening degree include: when the vehicle is at the vehicle speed less than a preset When the third threshold condition of the starting speed threshold, the gear position is the forward gear, and the accelerator pedal opening degree is greater than or equal to the preset starting opening threshold value, it is determined that the third condition continues to hold Whether the time is less than or equal to the preset threshold value for the start delay, and if so, the driving scenario is identified as the ejection start scenario.
  • the third identification sub-module is used to identify whether the vehicle is in an overtaking scene based on the vehicle speed, turn signal signal, accelerator pedal opening, steering wheel angle, and brake cylinder pressure, including: When the vehicle speed is greater than the preset overtaking speed limit, the turn signal is activated, and the accelerator pedal opening is greater than the preset overtaking opening threshold value, it is determined whether the fourth time when the fourth condition continues to be established is greater than the Set the overtaking time threshold value, if yes, continue with the following judgment: when the vehicle is at the steering wheel angle is greater than the preset overtaking angle threshold value, the brake master cylinder pressure before the preset time is greater than the preset turning system When the fifth condition of the dynamic pressure threshold value is determined, whether the fifth time when the fifth condition continues to be established is greater than a preset overtaking delay threshold value, and if so, it is identified that the vehicle is in an overtaking scenario.
  • the driving mode includes an economic mode, a standard mode and a sports mode with a power level from low to high
  • the control module for controlling the vehicle to enter a corresponding driving mode includes: in the scene of the traffic light, etc., If the vehicle is in the standard mode or the sports mode, the vehicle is controlled to maintain the current driving mode; in the traffic congestion scenario, the vehicle is prohibited from switching or controlling the vehicle to a driving mode whose power level is higher than the current driving mode The vehicle is in the economic mode; under the catapult start scene and the overtaking scene, the vehicle is controlled to switch to the sports mode within a preset time.
  • Another object of the present invention is to propose a machine-readable storage medium to at least partially solve the above technical problems.
  • a machine-readable storage medium having instructions stored on the machine-readable storage medium is used to make the machine execute the above-mentioned vehicle driving mode control method.
  • the vehicle driving mode control system and the machine-readable storage medium have the same advantages as the above-mentioned vehicle driving mode control method over the prior art, and will not be repeated here.
  • FIG. 1 is a schematic flowchart of a method for controlling a driving mode of a vehicle according to an embodiment of the present invention
  • FIG. 2 is a schematic flowchart of an example of determining a traffic light scene in the first case
  • FIG. 3 is a schematic flowchart of an example of a traffic light scene for judgment in the second case
  • FIG. 4 is a schematic flowchart of an example of judging a launching scenario in an embodiment of the present invention
  • FIG. 5 is a schematic flowchart of an example of judging an overtaking scenario in an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a vehicle driving mode control system according to an embodiment of the present invention.
  • First identification sub-module 120 second identification sub-module
  • FIG. 1 is a schematic flowchart of a vehicle driving mode control method according to an embodiment of the present invention. As shown in FIG. 1, the vehicle driving mode control method includes:
  • Step S100 identify the driving scene of the vehicle.
  • Step S200 Control the vehicle to enter a corresponding driving mode according to the driving scenario of the vehicle.
  • the driving scene mainly includes a long-term parking lot scene, a traffic light scene, a traffic jam scene, a catapult start scene, and an overtaking scene.
  • the driving mode includes an economic mode, a standard mode, and a power level from low to high. Sports mode.
  • the recognition of the driving scene of the vehicle in the embodiment of the present invention mainly includes the following three parts:
  • whether the vehicle is in one of the long-time parking lot scene, the equal traffic light scene, and the traffic congestion scene is identified according to the number of times and speed of the vehicle.
  • the vehicle speed is reduced from being higher than the speed threshold for entering the parking state (the speed threshold is close to 0) to being lower than the speed threshold, which is recorded as one stop, that is, the corresponding number of stops is 1.
  • the main operation processes involved in waiting for traffic lights, long-term parking and traffic congestion are: the number of stops is 1, and the corresponding time in the parking state is short (such as the time for regular traffic lights) , Such as 60s, 30s, etc.), the vehicle may be in the state of waiting for traffic lights, if the corresponding time in the parking state is longer (for example, more than 120s), the vehicle may have been in a long-term parking state;
  • the parking state if the vehicle speed is higher than the set threshold within the preset time, the vehicle is likely to have started normal driving, otherwise it is re-judged whether there are parking times, if the parking frequency is still 1, the vehicle is likely to At traffic lights, if the number of stops is greater than or equal to 2, the vehicle is in a stop-and-go state, which is likely to be in a traffic jam scene.
  • the embodiments of the present invention can determine the following two situations as equal traffic light scenes, namely:
  • the vehicle when the vehicle is in the first condition where the number of stops is 1 and the vehicle speed is lower than the preset speed threshold for entering the parking state, it is determined whether the first time that the first condition continues to be established is less than the If the time threshold for entering the parking state is set, if it is, then the driving scene is recognized as the traffic light scene; otherwise, the driving scene is recognized as the long-term parking lot scene.
  • FIG. 2 is a schematic flowchart of an example of a traffic light scene for judgment in the first case, where Vx represents the vehicle speed, the speed threshold for entering the parking state is recorded as Ke_ExitWaittingTraffSpdThre, and the time threshold for entering the parking state is recorded as Ke_EnterParkingMaxTime.
  • the second case corresponding to the case where the driving scene is already the equal traffic light scene, is determined when the vehicle is in the second condition where the vehicle speed is higher than a preset speed threshold for exiting the equal traffic light state Whether the second time when the second condition continues to be established exceeds the preset time threshold for exiting traffic lights, etc. If yes, set the number of stops to 0, otherwise continue to count the number of stops of the vehicle, if the statistics indicate If the number of times is 1, the driving scene is identified as the equal traffic light scene, and if the counted number of parking times is greater than or equal to 2, the driving scene is identified as the traffic congestion scene.
  • FIG. 3 is a schematic flowchart of an example of determining a traffic light scene in the second case, where the preset speed threshold for exiting the traffic light state is Ke_ExitWaittingTraffSpdThre, and the preset time gate for exiting the traffic light is Limit Ke_ExitWaittingTraffMaxTime.
  • the preset speed threshold for exiting the traffic light state is Ke_ExitWaittingTraffSpdThre
  • the preset time gate for exiting the traffic light is Limit Ke_ExitWaittingTraffMaxTime.
  • the vehicle driving mode can be continuously monitored and switched through the scheme based on the dynamic driving index of the vehicle or the driver's behavior in the background art.
  • whether the vehicle is in the ejection starting scene is recognized according to the vehicle speed, gear position, and accelerator pedal opening degree.
  • Ejection start means that the driver wants to get enough power in the initial start-up phase, so that the vehicle can reach the expected speed in the shortest time.
  • the general operation process of the catapult start is: generally when the vehicle is stationary, then press the brake, and then press the accelerator pedal to a deep position, and then release the brake pedal at the right time to make the vehicle quickly get sufficient in the low gear Motivation.
  • the embodiment of the present invention identifying whether the vehicle is in a catapult start scenario includes: when the vehicle is at the vehicle speed less than a preset start speed threshold value, the gear position is forward gear, and the accelerator pedal opening degree is greater than or When it is equal to the third condition of the preset threshold value of starting opening, it is determined whether the third time that the third condition continues to be established is less than or equal to the preset threshold value of starting delay, and if so, the driving scenario is identified It is the starting scene of the ejection.
  • FIG. 4 is a schematic flowchart of an example of judging a catapult start scenario in an embodiment of the present invention, wherein the preset starting speed threshold is recorded as Ke_MaxRaceStarVehSpdTre, the gear signal is recorded as AccGear, and the preset starting opening threshold The value is recorded as Ke_MinRaceStarThroPos, and the preset start delay threshold value is recorded as Ke_RaceStartDelay.
  • the preset starting speed threshold is recorded as Ke_MaxRaceStarVehSpdTre
  • the gear signal is recorded as AccGear
  • the preset starting opening threshold The value is recorded as Ke_MinRaceStarThroPos
  • the preset start delay threshold value is recorded as Ke_RaceStartDelay.
  • Ke_MaxRaceStarVehSpdTre the value is smaller, corresponding to the starting state of the vehicle
  • the transmission gear meets the conditions of 1st gear or 2nd gear (1 ⁇ AccGear ⁇ 2 , That is, in the forward gear)
  • Ke_MinRaceStarThroPos the threshold value
  • Ke_RaceStartDelay the significance of the third time being less than or equal to Ke_RaceStartDelay is to give a certain delay time to the driving mode corresponding to the selected catapult start scenario. If the start delay threshold Ke_RaceStartDelay is exceeded (such as 40s), the vehicle may already be in Under normal driving conditions, consideration should be given to continuing to monitor and switch vehicle driving modes based on vehicle dynamic driving index or driver behavior.
  • the identification of the overtaking scenario in the embodiment of the present invention specifically includes: when the vehicle is at a speed greater than a preset overtaking speed limit, the turn signal is activated, and the accelerator pedal opening is greater than the
  • the fourth condition of the overtaking opening threshold value is set, it is determined whether the fourth time when the fourth condition continues to be established is greater than a preset overtaking time threshold value.
  • the preset overtaking speed limit is Ke_OvertakingCitySpd
  • the overtaking scene indicator is CityOvertakingFlg
  • the turn signal state is recorded as TurningLightState
  • the preset overtaking opening degree The threshold value is recorded as Ke_OvertakingThrottleThre
  • the preset overtaking time threshold value is recorded as Ke_CityOvertakingExceedThreTime
  • the preset overtaking corner threshold value is recorded as Ke_CityOvertakingSteeringAngleThre
  • the preset turning brake pressure threshold value is recorded as Ke_CityBrakingPreThresh
  • the preset overtaking delay threshold is recorded as Ke_CityRodOvertakingDelay.
  • the preset overtaking delay threshold Ke_CityRodOvertakingDelay is similar to the start delay threshold Ke_RaceStartDelay in Part 2).
  • a certain delay time is provided for selecting the driving mode corresponding to the overtaking scenario. If the delay time is exceeded, you may have overtaken, and you should consider continuing to monitor and switch the vehicle driving mode based on the vehicle's dynamic driving index or driver behavior.
  • the scheme for identifying driving scenarios in the embodiments of the present invention can also be applied to other control systems of vehicles to play a role in assisting decision-making.
  • some vehicle control functions are not suitable for activation in traffic congested sections, then the corresponding driving scene can be identified first through the solution of the embodiment of the present invention, and then the corresponding control function is controlled not to be activated.
  • the above first to fifth conditions, if any of the sub-conditions they contain are not true, they should exit the corresponding process.
  • the vehicle is controlled according to the driving scene of the vehicle Entering the corresponding driving mode may specifically include: under the traffic light scene, if the vehicle is in the standard mode or the sports mode, controlling the vehicle to maintain the current driving mode; in the traffic congestion scene, prohibiting The vehicle switches to a driving mode with a power level higher than the current driving mode or controls the vehicle to be in the economic mode; in the catapult start scenario and the overtaking scenario, the vehicle is controlled to switch to the vehicle within a preset time Sports mode.
  • the vehicle stops so that its dynamic driving index approaches zero, and the driver does not perform a driving operation, making it impossible to monitor the driving intention of the driver.
  • the driving in the prior art The mode switching scheme will switch the vehicle from the standard mode or the sports mode to the economy mode, but in fact the driver is only forced to stop due to traffic lights, and does not expect the vehicle to switch to the standard mode.
  • the method of the embodiment of the present invention is used to identify the traffic light scene. If the vehicle is originally in the standard mode or the sports mode, the vehicle can be kept in the original mode without switching to the economy mode.
  • the most ideal mode is the economic mode, but in order to prevent other vehicles from being jammed, it is not ruled out that the driver will accelerate sharply, and then follow the car during a rapid deceleration. In the driving mode switching scheme, this change will cause the vehicle to frequently switch the driving mode.
  • the method of the embodiment of the present invention is used to identify traffic congestion scenes, prohibiting the vehicle to switch to a higher-level mode (if the original vehicle is in the standard mode, the vehicle is allowed to switch to the economic mode on the congested road section, but if the vehicle is originally in the economic Mode, even if the driver accelerates for a period of time, the vehicle is not allowed to switch to the standard mode or the sports mode).
  • the driving mode switching scheme in the prior art cannot switch to the sport mode with faster power output in the first time, which affects the driving experience of the driver, and the method of the embodiment of the present invention Identify the catapult start scene and the overtaking scene. If the driver has the intention of catapult start or overtaking, switch to the sports mode for the driver at the first time, so that the vehicle can increase the speed of the vehicle in the shortest time to meet the driver's acceleration Or overtaking needs.
  • the vehicle driving mode control method of the embodiment of the present invention proposes a scheme for switching the driving mode in combination with the driving scene, so that the switching of the driving mode is more reasonable.
  • the vehicle driving mode control method according to the embodiment of the present invention can be applied to the existing intelligent driving mode recognition system of the vehicle.
  • the intelligent driving mode recognition system can enable the intelligent driving mode recognition system to be in a traffic light scene or a traffic jam scene The next mode switch is more reasonable, which increases the robustness of the system.
  • the intelligent driving mode recognition system can switch to the sport mode with faster power output at the first time to improve the driver's driving experience.
  • the vehicle driving mode control method of the embodiment of the present invention achieves the improvement of the performance of the intelligent driving mode recognition system at the software level, does not involve modifying system components, and the development process is simple and flexible.
  • the vehicle driving mode control system may include: an identification module 100 for identifying the driving scene of the vehicle; and a control module 200 for controlling according to the driving scene of the vehicle identified by the identification module 100 The vehicle enters the corresponding driving mode.
  • the driving scene includes a long-time parking lot scene, a traffic light scene, a traffic jam scene, a catapult start scene and an overtaking scene.
  • the recognition module 100 includes a first recognition sub-module 110 for recognizing whether the vehicle is in the long-term parking lot scene, the equal traffic light scene and the scene according to the number of parking times and speed of the vehicle One of the traffic congestion scenes; the second recognition sub-module 120, used to recognize whether the vehicle is in the ejection starting scene according to the vehicle speed, gear and accelerator pedal opening; and the third recognition sub-module 130 , Used to identify whether the vehicle is in the overtaking scene based on the vehicle speed, turn signal, accelerator pedal opening, steering wheel angle, and brake cylinder pressure.
  • the first recognition sub-module 110 recognizes whether the vehicle is in one of the long-term parking lot scene, the iso-traffic light scene and the traffic congestion scene includes: when the vehicle is in parking When the number of times is 1 and the vehicle speed is lower than the first condition of the preset speed threshold for entering the parking state, determine whether the first time that the first condition continues to be established is less than the preset time threshold for entering the parking state, If yes, then identify the driving scene as the equal traffic light scene, otherwise identify the driving scene as the long-term parking lot scene; and corresponding to the case where the driving scene is the equal traffic light scene, in the When the vehicle is in the second condition where the vehicle speed is higher than the preset speed threshold value of the exit and other traffic lights, it is determined whether the second time when the second condition continues to be established exceeds the preset time threshold value of the exit and other traffic lights , If yes, set the number of parkings to 0, otherwise continue to count the number of parkings of the vehicle, if the number of parkings counted is 1, the driving scene is
  • the second identification sub-module 120 identifying whether the vehicle is in the catapult start scenario includes: when the vehicle is at the vehicle speed less than a preset start speed threshold, the gear is forward When the accelerator pedal opening degree is greater than or equal to the third threshold condition of the preset starting threshold, determine whether the third time when the third condition continues to be established is less than or equal to the preset threshold of starting delay Value, if yes, identifying the driving scenario as the launching scenario;
  • the third recognition sub-module 130 identifying whether the vehicle is in the overtaking scene includes: when the vehicle is at a speed greater than a preset overtaking speed limit, the turn signal is in an activated state, and the accelerator pedal opening is greater than a preset
  • the fourth condition of the overtaking opening threshold value is determined, whether the fourth time when the fourth condition continues to be established is greater than the preset overtaking time threshold value, and if so, continue the following judgment: when the vehicle is in the When the fifth condition of the steering wheel angle is greater than the preset overtaking angle threshold and the master cylinder pressure before the preset time is greater than the preset cornering brake pressure threshold, it is determined that the fifth condition continues to hold Whether the time is greater than a preset overtaking delay threshold, and if so, it is identified that the vehicle is in an overtaking scenario.
  • the driving mode includes an economic mode, a standard mode and a sports mode with a power level from low to high
  • the control module 200 for controlling the vehicle to enter a corresponding driving mode includes: under the traffic light scene , If the vehicle is in the standard mode or the sports mode, the vehicle is controlled to maintain the current driving mode; in the traffic congestion scenario, the vehicle is prohibited from switching or controlling to a driving mode whose power level is higher than the current driving mode The vehicle is in the economic mode; in the catapult start scenario and the overtaking scenario, the vehicle is controlled to switch to the sports mode within a preset time.
  • Embodiments of the present invention also provide a machine-readable storage medium, and the machine-readable storage medium stores instructions, which are used to cause the machine to perform the above-mentioned vehicle driving mode control.
  • the machine-readable storage medium includes but is not limited to phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), only Read memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory (Flash) or other memory technologies, read-only disc read-only memory (CD-ROM), digital versatile disc (DVD) ) Or other optical storage, magnetic cassette tape, magnetic tape magnetic disk storage or other magnetic storage devices and other media that can store program codes.
  • PRAM phase change memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • RAM random access memory
  • ROM only Read memory
  • EEPROM electrically erasable programmable read-only memory
  • flash flash memory
  • CD-ROM compact disc read-only memory
  • DVD digital versatile
  • the device that executes the above-mentioned vehicle driving mode control is, for example, a computer, a microcontroller, a microprocessor, etc., and may also be an ECU (Electronic Control Unit) of the vehicle. It is understandable that when the machine that executes the above-described vehicle driving mode control method is the ECU of the vehicle, the embodiment of the present invention is equivalent to providing a vehicle driving mode selection algorithm that can be embedded in the ECU control program to achieve The optimization of vehicle chassis performance is simple and can save development costs.
  • ECU Electronic Control Unit

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Abstract

一种车辆驾驶模式控制方法,包括:识别车辆的驾驶场景;以及根据车辆的驾驶场景,控制车辆进入对应的驾驶模式。其中,驾驶场景包括长时间停车场景、等交通灯场景、交通拥堵场景、弹射起步场景和超车场景。该车辆驾驶模式控制方法结合驾驶场景来切换驾驶模式,使得驾驶模式的切换更加合理,有助于丰富现有智能驾驶模式识别系统的功能,增加系统的鲁棒性,提升驾驶员的驾驶体验。还提供了一种车辆驾驶模式控制系统。

Description

车辆驾驶模式控制方法和系统 技术领域
本发明涉及车辆技术领域,特别涉及一种车辆驾驶模式控制方法和系统。
背景技术
当前的大部分车辆都配备驾驶模式控制系统,驾驶模式控制系统包括经济模式、标准模式以及运动模式,驾驶员选择不同的驾驶模式可以体验到车辆所带来的不同的驾驶感受,但在一些情况下由于终端客户对各模式并不了解,很容易出现客户选择的驾驶模式和实际的驾驶行为并不匹配的现象,在这种情况下车辆往往不能满足驾驶员的预期,设置的驾驶模式也不能充分发挥它的优点。例如:驾驶员选择了经济模式但在驾驶过程中频繁的深踩、快踩油门踏板和制动踏板。这种情形下,驾驶员深踩油门踏板是想获得更好的加速性能,但在经济模式下发动机的动力输出平缓,变速器换挡点提前,此情况下整车的动力输出可能并不能满足驾驶员快速加速的预期,同时由于频繁的制动造成能量损失增多,所以即便驾驶员选择了经济模式,车辆的经济性也未必会提高。所以驾驶员选择的驾驶模式和驾驶员的驾驶行为是否匹配会直接影响驾驶员的驾驶体验。现有的智能驾驶模式识别系统都是驾驶员手动选择某种驾驶模式,驾驶过程中无论驾驶员的驾驶行为与所选择的模式是否匹配,只要驾驶员不主动进行模式切换车辆的驾驶模式就不再变化,如果驾驶员对各种驾驶模式缺乏了解很容易出现驾驶行为和所选模式不匹配的情况进而降低了用户体验。
为了解决上述问题,现有技术主要根据两个指标进行驾驶模式判断,一个客观指标,一个主观指标。客观指标主要是根据整车的动态驾驶指数(利用整车的车速、纵向加速度、侧向加速度等评估出来整车激烈驾驶的程度)来判断当前最合适的驾驶模式;主观指标是通过驾驶员的行为(操纵加速踏板、制动踏板、转向灯等)来判断驾驶员的驾驶意图(如希望车辆快速输出动力提升加速性能),然后根据驾驶员的驾驶意图给驾驶员自动选择最合适的驾驶模式,其中在判断驾驶员的驾驶意图时,还考虑了道路环境因素(城市道路、郊区道路、高速公路),旨在使判断结果更加准确。
但是,上述现有技术的方案在实际应用中进行驾驶模式的切换时存在不合理的情况,具体表现有如下两个方面:
1)在等红绿灯或者在交通拥堵的情况下容易出现驾驶模式不合理的切换。
具体地,车辆在标准模式或者运动模式下行驶时,如果遇到红绿 灯时车辆会停止,此时车辆的动态驾驶指数会逐渐趋近于零(代表车辆激烈驾驶的程度最低),在停车状态下驾驶员没有了操作此时也无法去监控驾驶员的驾驶意图,所以最终出现的结果是车辆会从标准模式或者运动模式切换到经济模式,但事实上是驾驶员由于等红绿灯的原因被迫停车但是可能并不期望车辆切换到标准模式。进一步地,在交通拥堵路段由于受环境限制车辆行驶缓慢,此时车辆不需要大的动力输出,最理想的模式是经济模式。而事实上由于车辆的行驶缓慢动态指数很低,采用现有技术方案会自动选择经济模式。但是在有些情况下,比如为了防止其它车辆加塞,即便是在车辆拥堵的情况下也不排除驾驶员会急加速,然后在急减速跟车缓行,这种情况下就会造成动态驾驶指数先升高然后在降低,也有可能出现在急加速时驾驶模式升高,然后跟车缓行时驾驶模式降低,但很明显,这样的模式切换并不合理。
2)在弹射起步或者超车的时候,现有技术方案不能在第一时间切换到动力输出较快的运动模式,影响驾驶员的驾驶体验。
在弹射起步或者超车的时候驾驶员希望能快速的提升车辆的动力性,此时最合理的模式是运动模式。但是在弹射起步时车辆基本是静止的,动态驾驶指数趋近于零,而且按照当前智能驾驶模式识别系统的逻辑车辆静止时也没有足够的驾驶员输入信息(如制动踏板输入、转向盘输入、加速踏板输入等)来判断当前的模式。同理在驾驶员刚有超车意图时可能当前的模式也不处于运动模式。当前在超车或者弹射起步时,最常出现的情况是在超车过程中或者在弹射起步过程中由于加速度大且速度变大车辆的动态驾驶指数升高,然后模式切换为运动模式,但在弹射起步或者超车时驾驶员期望在第一时间车辆的模式就能切换为运动模式。
综上所述,为了给驾驶员提供更好的驾驶体验,需对上述现有智能驾驶模式识别系统的驾驶模式识别方案进行改进。
发明内容
有鉴于此,本发明旨在提出一种车辆驾驶模式控制方法,以至少部分地解决上述技术问题。
为达到上述目的,本发明的技术方案是这样实现的:
一种车辆驾驶模式控制方法,包括:识别车辆的驾驶场景;以及根据所述车辆的驾驶场景,控制所述车辆进入对应的驾驶模式。
进一步的,所述驾驶场景包括长时间停车场景、等交通灯场景、交通拥堵场景、弹射起步场景和超车场景,且所述识别车辆的驾驶场景包括:根据所述车辆的停车次数和车速识别所述车辆是否处于所述长时间停车场景、所述等交通灯场景及所述交通拥堵场景中的一者; 根据所述车辆的车速、档位及油门踏板开度识别所述车辆是否处于所述弹射起步场景;以及根据所述车辆的车速、转向灯信号、油门踏板开度、方向盘转角及制动油缸压力判断所述车辆是否处于超车场景。
进一步的,所述根据所述车辆的停车次数和车速识别所述车辆是否处于所述长时间停车场景、所述等交通灯场景及所述交通拥堵场景中的一者包括:在所述车辆处于停车次数为1且车速低于预设的进入停车状态的速度门限值的第一条件时,判断所述第一条件持续成立的第一时间是否小于预设的进入停车状态的时间门限值,若是,则识别所述驾驶场景为所述等交通灯场景,否则识别所述驾驶场景为所述长时间停车场景;和/或对应于所述驾驶场景为所述等交通灯场景的情况,在所述车辆处于车速高于预设的退出等交通灯状态的速度门限值的第二条件时,判断所述第二条件持续成立的第二时间是否超过预设的退出等交通灯的时间门限值,若是,则将停车次数置0,否则继续统计所述车辆的停车次数,若所统计的停车次数为1,则识别所述驾驶场景为所述等交通灯场景,若所统计的停车次数大于或等于2,则识别所述驾驶场景为所述交通拥堵场景。
进一步的,所述根据所述车辆的车速、档位及油门踏板开度识别所述车辆是否处于所述弹射起步场景包括:在所述车辆处于所述车速小于预设的起步速度门限值、所述档位为前进档且所述油门踏板开度大于或等于预设的起步开度门限值的第三条件时,判断所述第三条件持续成立的第三时间是否小于或等于预设的起步延时门限值,若是,则识别所述驾驶场景为所述弹射起步场景。
进一步的,所述根据所述车辆的车速、转向灯信号、油门踏板开度、方向盘转角及制动油缸压力判断所述车辆是否处于超车场景包括:在所述车辆处于车速大于预设的超车限速、转向灯处于激活状态、油门踏板开度大于预设的超车开度门限值的第四条件时,判断所述第四条件持续成立的第四时间是否大于预设的超车时间门限值,若是,则继续以下判断:
在所述车辆处于所述方向盘转角大于预设的超车转角门限值、预设时间之前的制动主缸压力大于预设的转弯制动压力门限值的第五条件时,判断所述第五条件持续成立的第五时间是否大于预设的超车延时门限值,若是,则识别所述车辆处于超车场景。
进一步的,所述驾驶模式包括动力级别从低至高的经济模式、标准模式和运动模式,且所述根据所述车辆的驾驶场景,控制所述车辆进入对应的驾驶模式包括:在所述等交通灯场景下,若车辆处于所述标准模式或所述运动模式,则控制所述车辆保持当前驾驶模式;在所述交通拥堵场景下,禁止所述车辆向动力级别高于当前驾驶模式的驾驶模式切换或控制所述车辆处于所述经济模式;在所述弹射起步场景 和所述超车场景下,控制车辆在预设时间内切换至所述运动模式。
相对于现有技术,本发明所述的车辆驾驶模式控制方法结合驾驶场景来切换驾驶模式,使得驾驶模式的切换更加合理,有助于丰富现有智能驾驶模式识别系统的功能,增加系统的鲁棒性,提升驾驶员的驾驶体验。
本发明的另一目的在于提出一种车辆驾驶模式控制系统,以至少部分地解决上述技术问题。
为达到上述目的,本发明的技术方案是这样实现的:
一种车辆驾驶模式控制系统,包括:识别模块,用于识别车辆的驾驶场景;以及控制模块,根据所述识别模块所识别的所述车辆的驾驶场景,控制所述车辆进入对应的驾驶模式。
进一步的,所述驾驶场景包括长时间停车场景、等交通灯场景、交通拥堵场景、弹射起步场景和超车场景,所述识别模块包括:第一识别子模块,用于根据所述车辆的停车次数和车速识别所述车辆是否处于所述长时间停车场景、所述等交通灯场景及所述交通拥堵场景中的一者;第二识别子模块,用于根据所述车辆的车速、档位及油门踏板开度识别所述车辆是否处于所述弹射起步场景;以及第三识别子模块,用于根据所述车辆的车速、转向灯信号、油门踏板开度、方向盘转角及制动油缸压力识别所述车辆是否处于超车场景。
进一步的,所述第一识别子模块用于根据所述车辆的停车次数和车速识别所述车辆是否处于所述长时间停车场景、所述等交通灯场景及所述交通拥堵场景中的一者包括:在所述车辆处于停车次数为1且车速低于预设的进入停车状态的速度门限值的第一条件时,判断所述第一条件持续成立的第一时间是否小于预设的进入停车状态的时间门限值,若是,则识别所述驾驶场景为所述等交通灯场景,否则识别所述驾驶场景为所述长时间停车场景;以及对应于所述驾驶场景为所述等交通灯场景的情况,在所述车辆处于车速高于预设的退出等交通灯状态的速度门限值的第二条件时,判断所述第二条件持续成立的第二时间是否超过预设的退出等交通灯的时间门限值,若是,则将停车次数置0,否则继续统计所述车辆的停车次数,若所统计的停车次数为1,则识别所述驾驶场景为所述等交通灯场景,若所统计的停车次数大于或等于2,则识别所述驾驶场景为所述交通拥堵场景。
进一步的,所述第二识别子模块用于根据所述车辆的车速、档位及油门踏板开度识别所述车辆是否处于所述弹射起步场景包括:在所述车辆处于所述车速小于预设的起步速度门限值、所述档位为前进档且所述油门踏板开度大于或等于预设的起步开度门限值的第三条件时,判断所述第三条件持续成立的第三时间是否小于或等于预设的起步延时门限值,若是,则识别所述驾驶场景为所述弹射起步场景。
进一步的,所述第三识别子模块用于根据所述车辆的车速、转向灯信号、油门踏板开度、方向盘转角及制动油缸压力识别所述车辆是否处于超车场景包括:在所述车辆处于车速大于预设的超车限速、转向灯处于激活状态、油门踏板开度大于预设的超车开度门限值的第四条件时,判断所述第四条件持续成立的第四时间是否大于预设的超车时间门限值,若是,则继续以下判断:在所述车辆处于所述方向盘转角大于预设的超车转角门限值、预设时间之前的制动主缸压力大于预设的转弯制动压力门限值的第五条件时,判断所述第五条件持续成立的第五时间是否大于预设的超车延时门限值,若是,则识别所述车辆处于超车场景。
进一步的,所述驾驶模式包括动力级别从低至高的经济模式、标准模式和运动模式,且所述控制模块用于控制所述车辆进入对应的驾驶模式包括:在所述等交通灯场景下,若车辆处于所述标准模式或所述运动模式,则控制所述车辆保持当前驾驶模式;在所述交通拥堵场景下,禁止所述车辆向动力级别高于当前驾驶模式的驾驶模式切换或控制所述车辆处于所述经济模式;在所述弹射起步场景和所述超车场景下,控制车辆在预设时间内切换至所述运动模式。
本发明的另一目的在于提出一种机器可读存储介质,以至少部分地解决上述技术问题。
为达到上述目的,本发明的技术方案是这样实现的:
一种机器可读存储介质,该机器可读存储介质上存储有指令,该指令用于使得机器执行上述的车辆驾驶模式控制方法。
所述车辆驾驶模式控制系统及所述机器可读存储介质与上述车辆驾驶模式控制方法相对于现有技术所具有的优势相同,在此不再赘述。
本发明的其它特征和优点将在随后的具体实施方式部分予以详细说明。
附图说明
构成本发明的一部分的附图用来提供对本发明的进一步理解,本发明的示意性实施方式及其说明用于解释本发明,并不构成对本发明的不当限定。在附图中:
图1是本发明实施例的一种车辆驾驶模式控制方法的流程示意图;
图2是第一种情况中判断等交通灯场景的示例流程示意图;
图3是第二种情况中判断等交通灯场景的示例流程示意图;
图4是本发明实施例中判断弹射起步场景的示例流程示意图;
图5是本发明实施例中判断超车场景的示例流程示意图;以及
图6是本发明实施例的车辆驾驶模式控制系统的结构示意图。
附图标记说明:
100、识别模块                     200、控制模块
110、第一识别子模块               120、第二识别子模块
130、第三识别子模块
具体实施方式
需要说明的是,在不冲突的情况下,本发明中的实施方式及实施方式中的特征可以相互组合。
下面将参考附图并结合实施方式来详细说明本发明。
图1是本发明实施例的一种车辆驾驶模式控制方法的流程示意图。如图1所示,所述车辆驾驶模式控制方法包括:
步骤S100,识别车辆的驾驶场景。
步骤S200,根据所述车辆的驾驶场景,控制所述车辆进入对应的驾驶模式。
本发明实施例中,所述驾驶场景主要包括长时间停车场景、等交通灯场景、交通拥堵场景、弹射起步场景和超车场景,所述驾驶模式包括动力级别从低至高的经济模式、标准模式和运动模式。
对应于步骤S100,本发明实施例中识别车辆驾驶场景主要包括以下三个部分:
一、针对所述长时间停车场景、所述等交通灯场景及所述交通拥堵场景。
本发明实施例中,根据所述车辆的停车次数和车速识别所述车辆是否处于所述长时间停车场景、所述等交通灯场景及所述交通拥堵场景中的一者。其中,本发明实施例将车速从高于进入停车状态的速度门限值(该速度门限接近于0)降到低于该速度门限值记为一次停车,即对应的停车次数为1。
以在实际道路中等红绿灯为例,等交通灯、长时停车及交通拥堵时主要涉及的操作流程为:停车次数为1,且对应的处于停车状态的时间较短(例如常规的等红绿灯的时间,如60s、30s等)时,车辆可能处于等交通灯状态,若对应的处于停车状态的时间较长(例如大于120s),则车辆可能已处于长时停车状态;在车辆已处于等交通灯的停车状态时,若车速在预设时间内都高于设定门限值,则车辆很可能已经开始正常行驶,否则重新判断是否有停车次数,若停车次数仍为1,则车辆很可能在等交通灯,若停车次数大于等于2次,则车辆处于走走停停状态,很可能是处于交通拥堵场景。
据此,本发明实施例可将以下两种情况判断为等交通灯场景,即:
第一种情况,在所述车辆处于停车次数为1且车速低于预设的进入停车状态的速度门限值的第一条件时,判断所述第一条件持续成立的第一时间是否小于预设的进入停车状态的时间门限值,若是,则识别所述驾驶场景为所述等交通灯场景,否则识别所述驾驶场景为所述长时间停车场景。
下面结合图2来具体说明该第一种情况。图2为第一种情况中判断等交通灯场景的示例流程示意图,其中Vx表示车速,进入停车状态的速度门限值记为Ke_ExitWaittingTraffSpdThre,进入停车状态的时间门限值记为Ke_EnterParkingMaxTime。如图2所示,首先判断停车次数是否为1次,如果成立,则继续判断车速是否低于门限值(Ke_EnterParkingSpdThre),如果成立,则继续判断上述第一条件持续成立的第一时间是否小于设置的门限值(Ke_EnterParkingMaxTime),如果成立则表明当前为等红绿灯场景(记为TrafficLightFlg=1),如果不成立表示当前为长时停车场景(记为StandStillFlg=1)。
第二种情况,对应于所述驾驶场景已为所述等交通灯场景的情况,在所述车辆处于车速高于预设的退出等交通灯状态的速度门限值的第二条件时,判断所述第二条件持续成立的第二时间是否超过预设的退出等交通灯的时间门限值,若是,则将停车次数置0,否则继续统计所述车辆的停车次数,若所统计的停车次数为1,则识别所述驾驶场景为所述等交通灯场景,若所统计的停车次数大于或等于2,则识别所述驾驶场景为所述交通拥堵场景。
下面结合图3来具体说明该第一种情况。图3为第二种情况中判断等交通灯场景的示例流程示意图,其中所述预设的退出等交通灯状态的速度门限值记为Ke_ExitWaittingTraffSpdThre,所述预设的退出等交通灯的时间门限值Ke_ExitWaittingTraffMaxTime。如图3所示,首先判断车速是否高于门限值Ke_ExitWaittingTraffSpdThre(即第二条件),如果该第二条件成立,则继续判断持续的时间(即第二时间)是不是超过预设的退出等交通灯的时间门限值(Ke_ExitWaittingTraffMaxTime),若超过则把停车次数置零(因为此时车辆可能已经正常行驶),若持续的时间不超过门限值则继续判断停车次数是否为1,如果停车次数为1,则表明当前为等红绿灯的环境(TrafficLightFlg=1),如果停车次数大于等于2次,则表明当前为城市拥堵路段(记为SlowFlowFlg=1)。
需说明的是,在车辆开始正常行驶后,可通过背景技术中基于整车动态驾驶指数或驾驶员行为的方案来继续监控和切换车辆驾驶模式。
二、针对弹射起步场景。
本发明实施例中,根据所述车辆的车速、档位及油门踏板开度识别所述车辆是否处于所述弹射起步场景。
弹射起步是指驾驶员想在最初的起步阶段就获得充足的动力,使车辆能在最短的时间内达到预期的车速。弹射起步大致的操作流程为:一般是在车辆静止状态下,然后踩住刹车,然后把油门踏板踩到很深的位置,然后在合适的时机释放制动踏板,使车辆在低档位迅速获得充足的动力。
据此,本发明实施例识别车辆是否处于弹射起步场景包括:在所述车辆处于所述车速小于预设的起步速度门限值、所述档位为前进档且所述油门踏板开度大于或等于预设的起步开度门限值的第三条件时,判断所述第三条件持续成立的第三时间是否小于或等于预设的起步延时门限值,若是,则识别所述驾驶场景为所述弹射起步场景。
图4是本发明实施例中判断弹射起步场景的示例流程示意图,其中,所述预设的起步速度门限值记为Ke_MaxRaceStarVehSpdTre,档位信号记为AccGear,所述预设的起步开度门限值记为Ke_MinRaceStarThroPos,所述预设的起步延时门限值记为Ke_RaceStartDelay。参考图4,首先判断车速是否满小于Ke_MaxRaceStarVehSpdTre(该值较小,对应于车辆的起步状态),若是,再继续判断变速器的档位是否满足在1档或者2档的条件(1≤AccGear≤2,即处于前进档),如果满足,再继续判断油门踏板开度是否大于或等于门限值Ke_MinRaceStarThroPos),如果都满足(即第三条件成立),则将定时器置零同时开始计时以获得第三时间,如果第三时间小于或等于Ke_RaceStartDelay,则识别所述驾驶场景为所述弹射起步场景(记为RaceStartFlg=1),否则RaceStartFlg=0。
需说明的是,第三时间小于或等于Ke_RaceStartDelay的意义在于给选择弹射起步场景对应的驾驶模式一定的延迟时间,若超过了该起步延时门限值Ke_RaceStartDelay(如40s),则车辆可能已处于正常行驶状态,应考虑基于整车动态驾驶指数或驾驶员行为来继续监控和切换车辆驾驶模式。
3)根据所述车辆的车速、转向灯信号、油门踏板开度、方向盘转角及制动油缸压力判断所述车辆是否处于超车场景。
驾驶员在超车时一个重要的判断信息就是转向灯信号是否开启,但在车辆转向时也需要打转向灯,因此在制定超车场景识别的逻辑时要重点区分驾驶员打转向灯时是希望转向还是希望超车。对于一般驾驶员来说,超车和转向在大的原则上有如下相同和不同点:
相同点:a)超车和转向时都会激活左转向灯信号或者右转向灯信号;b)超车和转向时方向盘都会被旋转一定的角度。
不同点:a)超车时速度往往要比转向时速度高,通常来说在城 市道路上转弯时的车速要低于50KPH;b)超车时为了尽快提升车速,油门踏板开度在短暂的时间内处于很深的位置,而对于转向来说油门踏板开度则不会有这样的现象;c)在转向前速度往往较高,在转向时为了顺利转向通常会踩制动踏板降低车速,使车辆能顺利完成转向动作。
据此,基于上述原则和实际行车测试超车情形,本发明实施例中识别超车场景具体包括:在所述车辆处于车速大于预设的超车限速、转向灯处于激活状态、油门踏板开度大于预设的超车开度门限值的第四条件时,判断所述第四条件持续成立的第四时间是否大于预设的超车时间门限值。若成立,则继续以下判断:在所述车辆处于所述方向盘转角大于预设的超车转角门限值、预设时间之前的制动主缸压力大于预设的转弯制动压力门限值的第五条件时,判断所述第五条件持续成立的第五时间是否大于预设的超车延时门限值,若是,则识别所述车辆处于超车场景。
图5是本发明实施例中判断超车场景的示例流程示意图,其中预设的超车限速记为Ke_OvertakingCitySpd,超车场景标志符记为CityOvertakingFlg,转向灯状态记为TurningLightState,所述预设的超车开度门限值记为Ke_OvertakingThrottleThre,所述预设的超车时间门限值记为Ke_CityOvertakingExceedThreTime,所述预设的超车转角门限值记为Ke_CityOvertakingSteeringAngleThre,所述预设的转弯制动压力门限值记为Ke_CityBrakingPreThresh,所述预设的超车延时门限值记为Ke_CityRodOvertakingDelay。
如图5所示,首先判断车速是否大于门限值Ke_OvertakingCitySpd,如果不是则CityOvertakingFlg=0,否则继续判断转向灯信号是否激活(TurningLightState=1?)。如果转向灯信号未被激活,则CityOvertakingFlg=0,如果转向灯信号被激活,则继续判断油门踏板开度是否大于特定门限值(Ke_OvertakingThrottleThre),第四条件完毕。如果第四条件不成立则CityOvertakingFlg=0,同时定时器置于初始值(例如Timer=1000)。如果第四条件成立则定时器置零同时开始重新计时以确定第四时间,然后继续判断第四时间是否大于特定的门限值Ke_CityOvertakingExceedThreTime,如果不是,则CityOvertakingFlg=0,否则继续判断方向盘转角是否大于特定的门限值Ke_CityOvertakingSteeringAngleThre,若是,则CityOvertakingFlg=0,否则继续判断对制动时间进行计时的定时器(定时器例如为Timer1,其判断逻辑为:Timer1(0)=1000,如果主缸压力大于门限值(主缸压力>Ke_CityBrakingPreThresh),则Timer1置零同时开始重新计时,如果主缸压力小于门限值则定时器Timer1置于初始值(即 Timer1=1000))是否大于门限值Ke_CityBrakingTimeThresh,第五条件完毕。如果该第五条件不成立,则CityOvertakingFlg=0,否则则定时器Timer2(Timer2(0)=1000)置零同时开始计时,如果Timer2≤Ke_CityRodOvertakingDelay,则CityOvertakingFlg=1,否则CityOvertakingFlg=0。
需说明的是,预设的超车延时门限值Ke_CityRodOvertakingDelay与第2)部分中的起步延时门限值Ke_RaceStartDelay的意义相近,在此为选择超车场景对应的驾驶模式提供一定的延迟时间,若超过该延迟时间,则可能已经完成超车,应考虑基于整车动态驾驶指数或驾驶员行为来继续监控和切换车辆驾驶模式。
此外,还需说明的是,本发明实施例中识别驾驶场景的方案还可以应用于车辆的其他控制系统,起到辅助进行决策的作用,例如有些车辆控制功能在交通拥堵的路段不宜激活,则可通过本发明实施例的方案先识别出相应驾驶场景,再控制相应控制功能不被激活。另外,上述的第一条件至第五条件,若它们所包括的任一子条件不成立,都应退出相应流程。
进一步地,对应于步骤S200,针对上述涉及的长时间停车场景、等交通灯场景、交通拥堵场景、弹射起步场景和超车场景,本发明实施例中根据所述车辆的驾驶场景来控制所述车辆进入对应的驾驶模式可具体包括:在所述等交通灯场景下,若车辆处于所述标准模式或所述运动模式,则控制所述车辆保持当前驾驶模式;在所述交通拥堵场景下,禁止所述车辆向动力级别高于当前驾驶模式的驾驶模式切换或控制所述车辆处于所述经济模式;在所述弹射起步场景和所述超车场景下,控制车辆在预设时间内切换至所述运动模式。
举例而言,在等红绿灯时,车辆停车而使得其动态驾驶指数趋近于零,且驾驶员未进行驾驶操作而使得无法监控驾驶员的驾驶意图,在此情况下,现有技术中的驾驶模式切换方案会将车辆从所述标准模式或所述运动模式切换到经济模式,但事实上驾驶员只是由于等红绿灯的原因被迫停车,并不期望车辆切换到标准模式。对此,采用本发明实施例的方法来识别出等交通灯场景,如果车辆本来在标准模式或者运动模式可以使车辆保持在原来的模式而不切换到经济模式。类似地,在所述交通拥堵场景下,最理想的模式是经济模式,但为了防止其他车辆加塞,也不排除驾驶员会急加速,然后在急减速跟车缓行,在采用现有技术中的驾驶模式切换方案时,这一变化会使得车辆频繁切换驾驶模式。对此,采用本发明实施例的方法来识别出交通拥堵场景,禁止车辆向高一级的模式切换(如果本来车辆在标准模式,在拥堵路段允许车辆切换到经济模式,但是如果车辆本来在经济模式,即便驾驶员有段时间加速的行为也不允许车辆切换到标准模式或者运 动模式)。再类似地,在弹射起步或者超车的时候,现有技术中的驾驶模式切换方案不能在第一时间切换到动力输出较快的运动模式,影响驾驶员的驾驶体验,而本发明实施例的方法识别出弹射起步场景和超车场景下,如驾驶员有弹射起步或者超车的意图,则在第一时间为驾驶员切换到运动模式,使车辆能在最短的时间内提升车速,满足驾驶员的加速或者超车需求。
综上所述,本发明实施例的车辆驾驶模式控制方法提出了结合驾驶场景切换驾驶模式的方案,使得驾驶模式的切换更加合理。并且,本发明实施例的车辆驾驶模式控制方法可应用于车辆的现有智能驾驶模式识别系统中,通过检测几种典型驾驶模式,能够使智能驾驶模式识别系统在等红绿灯场景下或者交通拥堵场景下模式切换更加合理,增加系统的鲁棒性,同时在弹射起步或者超车的时候,智能驾驶模式识别系统能在第一时间切换到动力输出较快的运动模式,提升驾驶员的驾驶体验。另外,本发明实施例的车辆驾驶模式控制方法是在软件层面实现对智能驾驶模式识别系统的性能的提升,不涉及修改系统零部件,开发过程简单灵活。
图6是本发明实施例的车辆驾驶模式控制系统的结构示意图,该车辆驾驶模式控制系统与上述的车辆驾驶模式控制方法是基于同一发明思路的。如图6所示,所述车辆驾驶模式控制系统可以包括:识别模块100,用于识别车辆的驾驶场景;以及控制模块200,根据所述识别模块100所识别的所述车辆的驾驶场景,控制所述车辆进入对应的驾驶模式。
其中,所述驾驶场景包括长时间停车场景、等交通灯场景、交通拥堵场景、弹射起步场景和超车场景。
优选地,所述识别模块100包括:第一识别子模块110,用于根据所述车辆的停车次数和车速识别所述车辆是否处于所述长时间停车场景、所述等交通灯场景及所述交通拥堵场景中的一者;第二识别子模块120,用于根据所述车辆的车速、档位及油门踏板开度识别所述车辆是否处于所述弹射起步场景;以及第三识别子模块130,用于根据所述车辆的车速、转向灯信号、油门踏板开度、方向盘转角及制动油缸压力识别所述车辆是否处于超车场景。
更为优选地,所述第一识别子模块110识别所述车辆是否处于所述长时间停车场景、所述等交通灯场景及所述交通拥堵场景中的一者包括:在所述车辆处于停车次数为1且车速低于预设的进入停车状态的速度门限值的第一条件时,判断所述第一条件持续成立的第一时间是否小于预设的进入停车状态的时间门限值,若是,则识别所述驾驶场景为所述等交通灯场景,否则识别所述驾驶场景为所述长时间停车场景;以及对应于所述驾驶场景为所述等交通灯场景的情况,在所述 车辆处于车速高于预设的退出等交通灯状态的速度门限值的第二条件时,判断所述第二条件持续成立的第二时间是否超过预设的退出等交通灯的时间门限值,若是,则将停车次数置0,否则继续统计所述车辆的停车次数,若所统计的停车次数为1,则识别所述驾驶场景为所述等交通灯场景,若所统计的停车次数大于或等于2,则识别所述驾驶场景为所述交通拥堵场景。
更为优选地,所述第二识别子模块120识别所述车辆是否处于所述弹射起步场景包括:在所述车辆处于所述车速小于预设的起步速度门限值、所述档位为前进档且所述油门踏板开度大于或等于预设的起步开度门限值的第三条件时,判断所述第三条件持续成立的第三时间是否小于或等于预设的起步延时门限值,若是,则识别所述驾驶场景为所述弹射起步场景;
更为优选地,所述第三识别子模块130识别所述车辆是否处于超车场景包括:在所述车辆处于车速大于预设的超车限速、转向灯处于激活状态、油门踏板开度大于预设的超车开度门限值的第四条件时,判断所述第四条件持续成立的第四时间是否大于预设的超车时间门限值,若是,则继续以下判断:在所述车辆处于所述方向盘转角大于预设的超车转角门限值、预设时间之前的制动主缸压力大于预设的转弯制动压力门限值的第五条件时,判断所述第五条件持续成立的第五时间是否大于预设的超车延时门限值,若是,则识别所述车辆处于超车场景。
进一步地,所述驾驶模式包括动力级别从低至高的经济模式、标准模式和运动模式,且所述控制模块200用于控制所述车辆进入对应的驾驶模式包括:在所述等交通灯场景下,若车辆处于所述标准模式或所述运动模式,则控制所述车辆保持当前驾驶模式;在所述交通拥堵场景下,禁止所述车辆向动力级别高于当前驾驶模式的驾驶模式切换或控制所述车辆处于所述经济模式;在所述弹射起步场景和所述超车场景下,控制车辆在预设时间内切换至所述运动模式。
本发明实施例的车辆驾驶模式控制系统的具体实施细节及效果可参考上述的车辆驾驶模式控制方法,在此不再进行赘述。
本发明实施例还提供了一种机器可读存储介质,该机器可读存储介质上存储有指令,该指令用于使得机器执行上述的车辆驾驶模式控制。其中,所述机器可读存储介质包括但不限于相变内存(PRAM)、静态随机存取存储器(SRAM)、动态随机存取存储器(DRAM)、其他类型的随机存取存储器(RAM)、只读存储器(ROM)、电可擦除可编程只读存储器(EEPROM)、快闪记忆体(Flash Memory)或其他内存技术、只读光盘只读存储器(CD-ROM)、数字多功能光盘(DVD)或其他光学存储、磁盒式磁带,磁带磁磁盘存储或其他磁性存储设备 等各种可以存储程序代码的介质。执行上述的车辆驾驶模式控制的机器则例如是计算机、微控制器、微处理器等,也可以是车辆的ECU(Electronic Control Unit,电子控制单元)。可理解的是,当执行上述的车辆驾驶模式控制方法的机器是车辆的ECU时,本发明实施例相当于提供了一种可内嵌于ECU控制程序中的车辆驾驶模式选择算法,以实现对车辆底盘性能的优化,简单又能节省开发成本。
以上所述仅为本发明的较佳实施方式而已,并不用以限制本发明,凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。

Claims (13)

  1. 一种车辆驾驶模式控制方法,其特征在于,所述车辆驾驶模式控制方法包括:
    识别车辆的驾驶场景;以及
    根据所述车辆的驾驶场景,控制所述车辆进入对应的驾驶模式。
  2. 根据权利要求1所述的车辆驾驶模式控制方法,其特征在于,所述驾驶场景包括长时间停车场景、等交通灯场景、交通拥堵场景、弹射起步场景和超车场景,且所述识别车辆的驾驶场景包括:
    根据所述车辆的停车次数和车速识别所述车辆是否处于所述长时间停车场景、所述等交通灯场景及所述交通拥堵场景中的一者;
    根据所述车辆的车速、档位及油门踏板开度识别所述车辆是否处于所述弹射起步场景;以及
    根据所述车辆的车速、转向灯信号、油门踏板开度、方向盘转角及制动油缸压力判断所述车辆是否处于超车场景。
  3. 根据权利要求2所述的车辆驾驶模式控制方法,其特征在于,所述根据所述车辆的停车次数和车速识别所述车辆是否处于所述长时间停车场景、所述等交通灯场景及所述交通拥堵场景中的一者包括:
    在所述车辆处于停车次数为1且车速低于预设的进入停车状态的速度门限值的第一条件时,判断所述第一条件持续成立的第一时间是否小于预设的进入停车状态的时间门限值,若是,则识别所述驾驶场景为所述等交通灯场景,否则识别所述驾驶场景为所述长时间停车场景;和/或
    对应于所述驾驶场景为所述等交通灯场景的情况,在所述车辆处 于车速高于预设的退出等交通灯状态的速度门限值的第二条件时,判断所述第二条件持续成立的第二时间是否超过预设的退出等交通灯的时间门限值,若是,则将停车次数置0,否则继续统计所述车辆的停车次数,若所统计的停车次数为1,则识别所述驾驶场景为所述等交通灯场景,若所统计的停车次数大于或等于2,则识别所述驾驶场景为所述交通拥堵场景。
  4. 根据权利要求2所述的车辆驾驶模式控制方法,其特征在于,所述根据所述车辆的车速、档位及油门踏板开度识别所述车辆是否处于所述弹射起步场景包括:
    在所述车辆处于所述车速小于预设的起步速度门限值、所述档位为前进档且所述油门踏板开度大于或等于预设的起步开度门限值的第三条件时,判断所述第三条件持续成立的第三时间是否小于或等于预设的起步延时门限值,若是,则识别所述驾驶场景为所述弹射起步场景。
  5. 根据权利要求2所述的车辆驾驶模式控制方法,其特征在于,所述根据所述车辆的车速、转向灯信号、油门踏板开度、方向盘转角及制动油缸压力判断所述车辆是否处于超车场景包括:
    在所述车辆处于车速大于预设的超车限速、转向灯处于激活状态、油门踏板开度大于预设的超车开度门限值的第四条件时,判断所述第四条件持续成立的第四时间是否大于预设的超车时间门限值,若是,则继续以下判断:
    在所述车辆处于所述方向盘转角大于预设的超车转角门限值、预设时间之前的制动主缸压力大于预设的转弯制动压力门限值的第五条件时,判断所述第五条件持续成立的第五时间是否大于预设的 超车延时门限值,若是,则识别所述车辆处于超车场景。
  6. 权利要求2所述的车辆驾驶模式控制方法,其特征在于,所述驾驶模式包括动力级别从低至高的经济模式、标准模式和运动模式,且所述根据所述车辆的驾驶场景,控制所述车辆进入对应的驾驶模式包括:
    在所述等交通灯场景下,若车辆处于所述标准模式或所述运动模式,则控制所述车辆保持当前驾驶模式;
    在所述交通拥堵场景下,禁止所述车辆向动力级别高于当前驾驶模式的驾驶模式切换或控制所述车辆处于所述经济模式;
    在所述弹射起步场景和所述超车场景下,控制车辆在预设时间内切换至所述运动模式。
  7. 一种车辆驾驶模式控制系统,其特征在于,所述车辆驾驶模式控制系统包括:
    识别模块,用于识别车辆的驾驶场景;以及
    控制模块,根据所述识别模块所识别的所述车辆的驾驶场景,控制所述车辆进入对应的驾驶模式。
  8. 根据权利要求7所述的车辆驾驶模式控制系统,其特征在于,所述驾驶场景包括长时间停车场景、等交通灯场景、交通拥堵场景、弹射起步场景和超车场景,所述识别模块包括:
    第一识别子模块,用于根据所述车辆的停车次数和车速识别所述车辆是否处于所述长时间停车场景、所述等交通灯场景及所述交通拥堵场景中的一者;
    第二识别子模块,用于根据所述车辆的车速、档位及油门踏板开 度识别所述车辆是否处于所述弹射起步场景;以及
    第三识别子模块,用于根据所述车辆的车速、转向灯信号、油门踏板开度、方向盘转角及制动油缸压力识别所述车辆是否处于超车场景。
  9. 根据权利要求8所述的车辆驾驶模式控制系统,其特征在于,所述第一识别子模块用于根据所述车辆的停车次数和车速识别所述车辆是否处于所述长时间停车场景、所述等交通灯场景及所述交通拥堵场景中的一者包括:
    在所述车辆处于停车次数为1且车速低于预设的进入停车状态的速度门限值的第一条件时,判断所述第一条件持续成立的第一时间是否小于预设的进入停车状态的时间门限值,若是,则识别所述驾驶场景为所述等交通灯场景,否则识别所述驾驶场景为所述长时间停车场景;以及
    对应于所述驾驶场景为所述等交通灯场景的情况,在所述车辆处于车速高于预设的退出等交通灯状态的速度门限值的第二条件时,判断所述第二条件持续成立的第二时间是否超过预设的退出等交通灯的时间门限值,若是,则将停车次数置0,否则继续统计所述车辆的停车次数,若所统计的停车次数为1,则识别所述驾驶场景为所述等交通灯场景,若所统计的停车次数大于或等于2,则识别所述驾驶场景为所述交通拥堵场景。
  10. 根据权利要求8所述的车辆驾驶模式控制系统,其特征在于,所述第二识别子模块用于根据所述车辆的车速、档位及油门踏板开度识别所述车辆是否处于所述弹射起步场景包括:
    在所述车辆处于所述车速小于预设的起步速度门限值、所述档位 为前进档且所述油门踏板开度大于或等于预设的起步开度门限值的第三条件时,判断所述第三条件持续成立的第三时间是否小于或等于预设的起步延时门限值,若是,则识别所述驾驶场景为所述弹射起步场景。
  11. 根据权利要求8所述的车辆驾驶模式控制系统,其特征在于,所述第三识别子模块用于根据所述车辆的车速、转向灯信号、油门踏板开度、方向盘转角及制动油缸压力识别所述车辆是否处于超车场景包括:在所述车辆处于车速大于预设的超车限速、转向灯处于激活状态、油门踏板开度大于预设的超车开度门限值的第四条件时,判断所述第四条件持续成立的第四时间是否大于预设的超车时间门限值,若是,则继续以下判断:在所述车辆处于所述方向盘转角大于预设的超车转角门限值、预设时间之前的制动主缸压力大于预设的转弯制动压力门限值的第五条件时,判断所述第五条件持续成立的第五时间是否大于预设的超车延时门限值,若是,则识别所述车辆处于超车场景。
  12. 权利要求8所述的车辆驾驶模式控制系统,其特征在于,所述驾驶模式包括动力级别从低至高的经济模式、标准模式和运动模式,且所述控制模块用于控制所述车辆进入对应的驾驶模式包括:
    在所述等交通灯场景下,若车辆处于所述标准模式或所述运动模式,则控制所述车辆保持当前驾驶模式;
    在所述交通拥堵场景下,禁止所述车辆向动力级别高于当前驾驶模式的驾驶模式切换或控制所述车辆处于所述经济模式;
    在所述弹射起步场景和所述超车场景下,控制车辆在预设时间内切换至所述运动模式。
  13. 一种机器可读存储介质,该机器可读存储介质上存储有指令,该指令用于使得机器执行权利要求1至6中任意一项所述的车辆驾驶模式控制方法。
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