Vehicle and switching method and switching device for driving modes of vehicle

Abstract

The invention discloses a vehicle and a switching method and device of a driving mode of the vehicle. The method comprises the steps that weather information and / or road information in the current vehicle driving process are / is obtained; determining a target driving mode of the vehicle based on the weather information and / or the road information; and in a preset time period, if the weather information and / or the road information are / is not changed, switching the driving mode of the current vehicle to the target driving mode. According to the method, the two hands of the driver can be released, the driving mode of the vehicle can be automatically switched, the driving experience of the driver and the driving intelligence of a cabin are effectively improved, and the method can be adapted to most intelligent vehicles on the market.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a method for switching a vehicle driving mode, a vehicle, and a device for switching a vehicle driving mode. Background Art

[0002] With the iteration and development of intelligent driving functions, today's smart car driving functions are gradually being improved and perfected. Among them, the development of vehicle driving mode functions has been gradually completed. There are economic modes suitable for daily commuting in the city, default normal modes suitable for most daily scenes, sports modes for high-speed overtaking and steep mountain slopes, and snow modes for anti-skid snow in winter. The above modes allow the vehicle to drive in the most correct mode. However, there is currently no system solution to realize the function of vehicle adaptive road switching. Many users do not have the habit of switching according to real-time road conditions when driving, resulting in the practicality of the intelligent driving mode for some users is not high. Summary of the invention

[0003] The present application aims to solve at least one of the technical problems in the related art to a certain extent. To this end, the first purpose of the present application is to propose a method for switching a vehicle driving mode, obtain weather information and / or road information during the current vehicle driving process, determine the target driving mode of the vehicle based on the weather information and / or road information, and switch the current vehicle driving mode to the target driving mode if the weather information and / or road information has not changed within a preset time period, thereby freeing the driver's hands and automatically switching the vehicle's driving mode, thereby effectively improving the driver's driving experience and the intelligence of the cockpit driving, and can be adapted to most smart vehicles on the market.

[0004] The second object of the present application is to provide a vehicle.

[0005] The third objective of the present application is to provide a device for switching vehicle driving modes.

[0006] To achieve the above-mentioned objectives, the first aspect of the present application proposes a method for switching a vehicle driving mode, the method comprising: obtaining weather information and / or road information during the current driving process of the vehicle; determining a target driving mode of the vehicle based on the weather information and / or the road information; within a preset time period, if the weather information and / or the road information has not changed, switching the current driving mode of the vehicle to the target driving mode.

[0007] According to the vehicle driving mode switching method of the embodiment of the present application, the weather information and / or road information during the current vehicle driving process is obtained, and the target driving mode of the vehicle is determined based on the weather information and / or road information. If the weather information and / or road information does not change within a preset time period, the current vehicle driving mode is switched to the target driving mode. As a result, the method can free the driver's hands and automatically switch the vehicle's driving mode, thereby effectively improving the driver's driving experience and the intelligent cockpit driving, and can be adapted to most smart vehicles on the market.

[0008] In addition, the method for switching the vehicle driving mode according to the above embodiment of the present application may also have the following additional technical features:

[0009] According to one embodiment of the present application, the weather information includes rainfall, and determining the target driving mode of the vehicle based on the weather information includes: when the rainfall is greater than or equal to a preset rainfall threshold, determining that the target driving mode is a rainy day mode, wherein the rainy day mode includes turning on at least one of the fog lights, turning on the rearview mirror heating, and turning on the vehicle body stability system.

[0010] According to one embodiment of the present application, the road information includes a degree of road congestion, and determining the target driving mode of the vehicle based on the road information includes: when the degree of congestion meets a preset degree of congestion, determining the target driving mode to be an energy-saving mode.

[0011] According to one embodiment of the present application, the road information includes a degree of bumpiness of the road, and the degree of bumpiness includes a first degree of bumpiness, a second degree of bumpiness, and a third degree of bumpiness, and determining the target driving mode of the vehicle based on the road information includes: when the degree of bumpiness is the second degree of bumpiness or the third degree of bumpiness, determining the target driving mode to be a sport mode, wherein the vibration acceleration corresponding to the first degree of bumpiness is greater than a first preset acceleration threshold and less than a second preset acceleration threshold, the vibration frequency corresponding to the first degree of bumpiness is greater than a first preset frequency threshold and less than a second preset frequency threshold, the vibration amplitude corresponding to the first degree of bumpiness is greater than a first preset amplitude threshold and less than a second preset amplitude threshold, and the second degree of bumpiness is greater than a first preset amplitude threshold and less than a second preset amplitude threshold. The vibration acceleration corresponding to the degree of bumpiness is greater than or equal to the second preset acceleration threshold and less than the third preset acceleration threshold, the vibration frequency corresponding to the second degree of bumpiness is greater than or equal to the second preset frequency threshold and less than the third preset frequency threshold, the vibration amplitude corresponding to the second degree of bumpiness is greater than or equal to the second preset amplitude threshold and less than the third preset amplitude threshold, the vibration acceleration of the third degree of bumpiness is greater than or equal to the third preset acceleration threshold, the vibration frequency corresponding to the third degree of bumpiness is greater than or equal to the third preset frequency threshold, the vibration amplitude corresponding to the third degree of bumpiness is greater than or equal to the third preset amplitude threshold, and the motion mode includes adjusting at least one of the suspension system, power system and steering system of the vehicle.

[0012] According to one embodiment of the present application, the road information includes spectral information of the road, and determining the target driving mode of the vehicle based on the road information includes: determining whether the current road section is a snowy section or an icy section based on the spectral information; and when the current road section is the snowy section or the icy section, determining that the target driving mode is a snow mode.

[0013] According to one embodiment of the present application, the road information includes the contact pressure between the tires of the vehicle and the ground, and determining the target driving mode of the vehicle based on the road information includes: determining whether the current road section is a sandy section or a muddy section based on the contact pressure; and determining that the target driving mode is a sand mode when the current road section is the sandy section or the muddy section.

[0014] According to one embodiment of the present application, the road information includes a road inclination angle, and determining the target driving mode of the vehicle based on the road information includes: when the inclination angle is greater than a preset angle threshold, determining that the target driving mode is a sport mode.

[0015] According to one embodiment of the present application, the method also includes: when the current road section is a multi-scenario fusion section, determining the priority of the driving mode, wherein the priority order includes that the priority of the snow mode is greater than the priority of the rainy day mode, the priority of the rainy day mode is greater than the priority of the desert mode and the priority of the sports mode, and the priority of the desert mode and the priority of the sports mode are greater than the priority of the energy-saving mode.

[0016] To achieve the above-mentioned purpose, a vehicle is proposed in the second aspect of the embodiment of the present application, including a memory, a processor, and a program stored in the memory and executable on the processor, and when the processor executes the program, the above-mentioned method for switching the vehicle driving mode is implemented.

[0017] According to the vehicle of the embodiment of the present application, by executing the above-mentioned vehicle driving mode switching method, the driver's hands can be freed and the vehicle's driving mode can be automatically switched, thereby effectively improving the driver's driving experience and cockpit driving intelligence, and can be adapted to most smart vehicles on the market.

[0018] To achieve the above-mentioned purpose, the third aspect embodiment of the present application proposes a vehicle driving mode switching device, which includes: an acquisition module, used to obtain weather information and / or road information during the current driving process of the vehicle; a determination module, used to determine the target driving mode of the vehicle based on the weather information and / or the road information; a switching module, used to switch the current driving mode of the vehicle to the target driving mode within a preset time period if the weather information and / or the road information has not changed.

[0019] According to the vehicle driving mode switching device of the embodiment of the present application, the acquisition module is used to obtain the weather information and / or road information during the current vehicle driving process, the determination module is used to determine the target driving mode of the vehicle based on the weather information and / or road information, and the switching module is used to switch the current vehicle driving mode to the target driving mode if the weather information and / or road information does not change within a preset time period. As a result, the device can free the driver's hands and automatically switch the vehicle's driving mode, thereby effectively improving the driver's driving experience and the intelligent cockpit driving, and can be adapted to most smart vehicles on the market.

[0020] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a flow chart of a method for switching a vehicle driving mode according to an embodiment of the present application;

[0022] Figure 2 is a block diagram of a vehicle according to an embodiment of the present application;

[0023] Figure 3 4 is a block diagram of a device for switching a vehicle driving mode according to an embodiment of the present application. DETAILED DESCRIPTION

[0024] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0025] The following describes a method for switching a vehicle driving mode, a vehicle, and a device for switching a vehicle driving mode, as proposed in an embodiment of the present application, with reference to the accompanying drawings.

[0026] Figure 1 Flow chart of a method for switching a vehicle driving mode according to an embodiment of the present application.

[0027] like Figure 1 As shown, the method for switching the vehicle driving mode of the embodiment of the present application may include the following steps:

[0028] S1, obtaining weather information and / or road information during the current vehicle driving process.

[0029] S2, determining a target driving mode of the vehicle based on weather information and / or road information.

[0030] S3, if the weather information and / or the road information does not change within a preset time period, the current driving mode of the vehicle is switched to the target driving mode. The preset time period may be determined according to actual conditions.

[0031] Specifically, during the driving process of the vehicle, the weather information or road information of the current vehicle driving process is first obtained, or the weather information and road information of the driving process are obtained at the same time. For example, the current rainfall can be measured by a rain sensor to determine the current weather information, or the current weather information can be obtained through the weather forecast through the vehicle-machine network, such as whether the current weather is raining or snowing. Road information can be obtained through an online map system. For example, real-time road information can be obtained through vehicle networking technology, including road congestion, road conditions, speed limits, etc. Alternatively, cameras and image recognition technologies can be combined, such as taking road images through a vehicle-mounted camera, and combining image recognition algorithms to analyze road conditions, such as snow, ice, sand, etc. Alternatively, the inclination angle of the vehicle can be measured by a gyroscope to determine whether the current road is a steep slope section.

[0032] After obtaining weather information and road information, the target driving mode of the vehicle can be determined according to the weather information or the road information, or the target driving mode of the vehicle can be determined according to both the weather information and the road information. For example, the obtained weather information is analyzed. If the rainfall sensor detects that the rainfall is greater than or equal to a preset threshold (such as moderate rain and above), the target driving mode can be determined to be a rainy day mode. If the camera is combined to determine that there is snow or ice on the road surface, the target driving mode can be determined to be a snowy day mode. The obtained road information can also be analyzed. For example, if the current online map system shows that the road congestion reaches a preset threshold (such as the average vehicle speed is less than 20km / h), the target driving mode can be determined to be an energy-saving mode. If the inclination angle of the vehicle is currently measured by the gyroscope and it is determined that the current road is a steep slope section (such as the gyroscope detects that the inclination angle of the vehicle is greater than 15 degrees), the target driving mode can be determined to be a sports mode. If the target driving mode of the vehicle is determined according to both weather information and road information, the final target driving mode can be determined according to the preset priority rules. For example, when the current rainfall is heavy and the rainy day mode is previously determined, if the current road is still congested, then according to the predetermined priority, the priority of the rainy day mode is greater than the priority of the energy-saving mode, and the current target driving mode can be determined as the rainy day mode.

[0033] In addition, in order to avoid frequent and unnecessary driving mode switching due to short-term changes in road conditions, a preset time period (such as 30 seconds to 1 minute) is set. During the preset time period, the system continuously monitors weather information and road information to determine whether the information is consistent. If the weather information and road information have not changed during the preset time period and the target driving mode has been determined, the driving mode of the current vehicle is switched to the target driving mode. After switching to the target driving mode, the functions related to the mode can be automatically activated, such as turning on the fog lights in the rainy mode and activating the body stability system in the snow mode. In addition, in the target driving mode, weather and road information can continue to be monitored in real time. If the road conditions change (such as less rainfall, no longer congested roads, etc.), it will be re-evaluated and switched to a more suitable driving mode.

[0034] This not only improves the vehicle's driving safety under complex road conditions, but also enhances the driving experience, reflecting the intelligence and humanity of intelligent driving technology.

[0035] According to an embodiment of the present application, weather information includes rainfall, and determining a target driving mode of the vehicle based on the weather information includes: when the rainfall is greater than or equal to a preset rainfall threshold, determining the target driving mode to be a rainy day mode, wherein the rainy day mode includes turning on at least one of fog lights, turning on rearview mirror heating, and turning on a vehicle body stability system. The preset rainfall threshold may be determined according to actual conditions.

[0036] Specifically, weather information may include rainfall, which can be obtained through a rain sensor. That is, in the current automobile body design, a rain sensor can be installed behind the front windshield of the vehicle. The rain sensor determines the rainfall by judging the amount of rain falling on the glass, thereby judging the current rainfall on the road and adjusting the vehicle state to the best state for driving in rainy days, thereby greatly improving the convenience and safety of driving in rainy days. In other words, the current rainfall can be judged. When the rainfall is greater than or equal to the preset rainfall threshold, it means that the current rainfall is large, such as moderate rain, heavy rain, or heavy rainstorm, etc., and the target driving mode can be determined as the rainy day mode.

[0037] In rainy day mode, the fog lights can be turned on, that is, the fog lights can provide better lighting in rainy days or low visibility conditions, helping the driver to see the road conditions ahead more clearly, and also making it easier for other vehicles to see the vehicle. And the rearview mirror heating can be automatically turned on. The rearview mirror heating function can prevent rain from accumulating on the rearview mirror, thereby keeping the rearview mirror clear and improving the driver's field of vision. The body stability system can also be turned on, that is, the body stability system can help the vehicle remain stable on slippery roads and prevent the vehicle from losing control. In rainy day mode, the body stability system will intervene more actively to ensure the driving safety of the vehicle. In this way, the driver's driving safety can be guaranteed, and the rainy day mode can be automatically switched to improve the user's driving experience.

[0038] According to one embodiment of the present application, the road information includes the degree of congestion of the road, and determining the target driving mode of the vehicle based on the road information includes: when the congestion degree meets the preset congestion degree, determining the target driving mode to be an energy-saving mode.

[0039] Specifically, road information may include the degree of road congestion. For example, the vehicle's smart cockpit may be equipped with an online map system that can obtain real-time road information, including but not limited to the degree of road congestion, road conditions, speed limits, etc. The online map system obtains real-time traffic data by combining with traffic management departments, satellite positioning systems, and vehicle networking technologies. These data can reflect the current degree of road congestion.

[0040] Preset congestion threshold: One or more preset congestion thresholds are set to determine whether the road is in a congested state. These thresholds can be set according to the actual road conditions and vehicle driving speed. For example: Low congestion threshold: The average vehicle speed is less than 20km / h. Medium congestion threshold: The average vehicle speed is between 20km / h and 40km / h. High congestion threshold: The average vehicle speed is less than 20km / h and the duration exceeds a certain length of time (such as 3 minutes). When the road congestion level meets the preset congestion threshold, the target driving mode of the vehicle is determined to be energy-saving mode. The main purpose of the energy-saving mode is to reduce the energy consumption of the vehicle under congested road conditions while maintaining the normal driving performance of the vehicle. For example, in the energy-saving mode, the power output of the engine can be reduced to avoid unnecessary acceleration and sudden braking, thereby reducing fuel consumption or electricity consumption. In order to reduce the power of the air-conditioning system and reduce energy consumption, the engine can be automatically shut down when the vehicle stops to reduce idling fuel consumption.

[0041] Therefore, during urban commuting, especially during rush hour in the morning and evening, roads are often congested and the vehicle automatically switches to energy-saving mode. The energy-saving mode significantly reduces the vehicle's energy consumption in congested road conditions by optimizing functions such as power output, air-conditioning system and shifting logic, while improving driving comfort and intelligent experience. This automatic driving mode switching reflects the intelligence and environmental protection concept of smart driving technology.

[0042] According to one embodiment of the present application, road information includes a degree of bumpiness of the road, and the degree of bumpiness includes a first degree of bumpiness, a second degree of bumpiness, and a third degree of bumpiness. Determining a target driving mode of the vehicle based on the road information includes: when the degree of bumpiness is the second degree of bumpiness or the third degree of bumpiness, determining the target driving mode to be a sport mode, wherein the vibration acceleration corresponding to the first degree of bumpiness is greater than a first preset acceleration threshold and less than a second preset acceleration threshold, the vibration frequency corresponding to the first degree of bumpiness is greater than a first preset frequency threshold and less than a second preset frequency threshold, the vibration amplitude corresponding to the first degree of bumpiness is greater than a first preset amplitude threshold and less than a second preset amplitude threshold, and the second The vibration acceleration corresponding to the degree of turbulence is greater than or equal to the second preset acceleration threshold and less than the third preset acceleration threshold, the vibration frequency corresponding to the second degree of turbulence is greater than or equal to the second preset frequency threshold and less than the third preset frequency threshold, the vibration amplitude corresponding to the second degree of turbulence is greater than or equal to the second preset amplitude threshold and less than the third preset amplitude threshold, the vibration acceleration of the third degree of turbulence is greater than or equal to the third preset acceleration threshold, the vibration frequency corresponding to the third degree of turbulence is greater than or equal to the third preset frequency threshold, the vibration amplitude corresponding to the third degree of turbulence is greater than or equal to the third preset amplitude threshold, and the motion mode includes adjusting at least one of the suspension system, power system and steering system of the vehicle. Among them, the first preset acceleration threshold, the second preset acceleration threshold, the third preset acceleration threshold, the first preset frequency threshold, the second preset frequency threshold, the third preset frequency threshold, the first preset amplitude threshold, the second preset amplitude threshold and the third preset amplitude threshold can be determined according to actual conditions.

[0043] Specifically, the road information includes the degree of bumpiness of the road, and the degree of bumpiness includes the first degree of bumpiness (mild bumpiness), the second degree of bumpiness (medium bumpiness) and the third degree of bumpiness (severe bumpiness). That is, the first degree of bumpiness is mild, and the vibration and discomfort felt by the passengers in the car are less, which usually occurs on a flat road or when passing through a slightly uneven road surface. This kind of bumpiness has little effect on the driving of the vehicle and the comfort of the passengers. The second degree of bumpiness is more obvious, and the passengers can feel more obvious vibration and discomfort in the car. This kind of bumpiness usually occurs on roads with poor road conditions, such as potholes and large undulating roads. When driving on a moderately bumpy road, the passengers may feel some discomfort, but it has little effect on the driving stability of the vehicle. The third degree of bumpiness is very severe, and the passengers will feel strong vibration and discomfort in the car, which may even affect the driving safety. This kind of bumpiness usually occurs in extremely bad road conditions, such as rugged mountain roads, severely damaged roads, etc. When driving on a severely bumpy road, the vehicle may be out of control and the safety of the passengers will be threatened. The vehicle's own vibration sensors can sense the degree of bumpiness of the road the vehicle is currently traveling on. These sensors can accurately capture vibration changes caused by road bumps or potential obstacles or collision events. When a car passes over an uneven road, the vibration sensor will sense these subtle vibration signals in real time and conduct in-depth analysis. The vibration sensor is usually installed on the chassis, suspension system or key parts of the vehicle body to detect vibration signals generated during the vehicle's driving. These sensors can measure the following parameters: Acceleration: The acceleration value of the vibration signal, usually in g (gravitational acceleration). Frequency: The frequency of the vibration signal, usually in Hz (Hertz). Amplitude: The amplitude of the vibration signal, that is, the maximum amplitude of the vibration. The degree of bumpiness of the road is estimated based on the frequency of the vibration signal, the acceleration of the vibration signal and the amplitude of the vibration signal. The car computer determines whether it needs to switch to sports mode based on the degree of bumpiness of the road.

[0044] For example, when the degree of bumpiness is the second degree of bumpiness or the third degree of bumpiness, the target driving mode can be determined to be the sports mode. The degree of bumpiness can be divided according to parameters such as acceleration, frequency and amplitude of the vibration signal. For example, the division criteria are: the vibration acceleration corresponding to the first degree of bumpiness is small, for example, between 0.1g (first preset acceleration threshold) and 0.3g (second preset acceleration threshold), the vibration frequency is low, for example, between 1Hz (first preset frequency threshold) and 5Hz (second preset frequency threshold), and the vibration amplitude is small, for example, between 1mm (first preset amplitude threshold) and 3mm (second preset amplitude threshold). The vibration acceleration corresponding to the second degree of bumpiness is medium, for example, between 0.3g (second preset acceleration threshold) and 0.6g (third preset acceleration threshold), the vibration frequency is medium, for example, between 5Hz (second preset frequency threshold) and 10Hz (third preset frequency threshold), and the vibration amplitude is medium, for example, between 3mm (second preset amplitude threshold) and 10mm (third preset amplitude threshold). The vibration acceleration corresponding to the third jolt degree is relatively large, for example, above 0.6g (the third preset acceleration threshold), the vibration frequency is relatively high, for example, above 10Hz (the third preset frequency threshold), and the vibration amplitude is relatively large, for example, above 10mm (the third preset amplitude threshold).

[0045] Therefore, when the bumpiness is the second bumpiness, the vehicle can be switched to the sports mode, the target driving mode can be determined to be the sports mode, the suspension and power output can be optimized, and the driving stability and comfort can be improved. Alternatively, when the bumpiness is the third bumpiness, the target driving mode can be determined to be the sports mode, further enhancing the vehicle's passability and stability. In this way, the vibration sensor can monitor the road conditions of the vehicle in real time, and accurately determine the bumpiness based on parameters such as the intensity and frequency of the vibration signal, thereby realizing intelligent switching of the driving mode.

[0046] According to one embodiment of the present application, the road information includes spectral information of the road, and the target driving mode of the vehicle is determined based on the road information, including: determining whether the current road section is a snowy section or an icy section based on the spectral information; when the current road section is a snowy section or an icy section, determining the target driving mode to be a snow mode.

[0047] Specifically, the road information may include the spectral information of the road. For example, the spectral information may be obtained by a non-invasive road sensor, that is, a non-invasive road sensor is a sensor based on multi-spectral measurement and remote sensing technology. The sensor obtains the spectral information of the road by emitting light of a specific wavelength and receiving light reflected from the road surface. The spectral information includes characteristics such as reflectivity and absorptivity at different wavelengths. It can collect the spectral information of the road surface in real time and accurately judge the state of the road surface, such as whether it is iced, snowed or watered. Among them, the reflectivity of snow in the visible light band (such as 400nm to 700nm) is high because snow is white and can reflect most of the visible light. In the near-infrared band (such as 700nm to 2500nm), the reflectivity of snow is also high, but the spectral curve will have specific characteristics. The reflectivity of the ice layer in the near-infrared band is low, and there will be obvious absorption peaks at certain wavelengths. For example, near 1500nm, the reflectivity of the ice layer will drop significantly. That is, when the current road section is a snowy road section or an icy road section, it can be determined that the target driving mode is the snow mode. In addition to spectral information, the vehicle can also combine other sensors (such as ultrasonic sensors, lidar) to measure the thickness of snow. When the snow thickness exceeds 5cm, the vehicle will switch to snow mode.

[0048] In snow mode, the power output can be adjusted, such as reducing the power output of the engine to prevent the vehicle from slipping on snow or ice. The suspension system can be adjusted, such as increasing the rigidity of the suspension to reduce the bouncing of the vehicle on bumpy roads. The tire pressure can be adjusted, such as appropriately reducing the tire pressure to increase the contact area between the tire and the ground and improve grip. The body stability system is activated, and the ESP system intervenes more actively to help the vehicle maintain stability and prevent loss of control. As a result, the automatic switching mode reduces the driver's operating burden in harsh road conditions and improves the driving experience. This automatic mode switching based on spectral information and snow thickness reflects the intelligence and humanity of intelligent driving technology.

[0049] According to one embodiment of the present application, the road information includes the contact pressure between the tires of the vehicle and the ground, and the target driving mode of the vehicle is determined based on the road information, including: determining whether the current road section is a sandy section or a muddy section based on the contact pressure; when the current road section is a sandy section or a muddy section, determining the target driving mode to be a sand mode.

[0050] Specifically, road information may include the contact pressure between the vehicle's tires and the ground. For example, a ground pressure sensor can be installed on the vehicle's tires or suspension system to monitor the contact pressure between the tires and the ground in real time. When the vehicle is driving, the contact pressure between the tires and the ground will be converted into an electrical signal by the sensor and transmitted to the vehicle system. The sensor can detect changes in pressure and record the pressure value. That is, when the soil or the ground is subjected to pressure, the sensitive element inside the sensor, such as a strain gauge or piezoresistive material, will respond to this pressure and produce corresponding deformation or changes in resistance value. Next, these physical changes are converted into electrical signals by the sensor, which can be transmitted to the receiving device via a wired connection or directly wirelessly. In the receiving device, these electrical signals will undergo further data processing and analysis to obtain specific information about the soil or ground pressure.

[0051] The bearing capacity of sand is relatively weak, and the contact pressure between the tire and the ground is usually low. This is because the sand particles are loose and cannot provide sufficient support like hard roads. The bearing capacity of mud is also low, and the ground is relatively slippery, so the contact pressure between the tire and the ground is also low. One or more preset pressure thresholds can be set to determine whether the current road section is sand or mud. For example: ordinary road pressure threshold: assumed to be 150kPa (kilopascals), sand or mud pressure threshold: assumed to be 100kPa or lower, when the pressure data is lower than the preset threshold, the vehicle automatically switches to sand mode. Therefore, by carefully analyzing these pressure data, it can be indirectly inferred whether the current driving section is sand. This indirect judgment method is based on the unique physical properties of sand, that is, the impact of its low bearing capacity on tire pressure. In the above way, it can be determined whether the current road is a sandy section or a muddy section, so that when the current section is a sandy section or a muddy section, it can be switched to sand mode to drive in these two sections.

[0052] In sand mode, the engine power output can be increased to help the vehicle obtain sufficient driving force on soft sand or mud. The suspension system can also be adjusted, such as increasing the vehicle's ground clearance and reducing the friction between the vehicle chassis and the ground. Therefore, the target driving mode is determined to be sand mode and automatically switched, which can reduce the driver's operating burden under harsh road conditions, improve the vehicle's driving safety and driving experience under soft road conditions, and reflect the intelligence and humanity of intelligent driving technology.

[0053] According to an embodiment of the present application, the road information includes a road inclination angle, and determining the target driving mode of the vehicle based on the road information includes: when the inclination angle is greater than a preset angle threshold, determining the target driving mode to be a sport mode. The preset angle threshold can be determined according to actual conditions.

[0054] Specifically, the road information includes the road inclination angle. For example, by equipping the vehicle with a gyroscope sensor to measure the vehicle's inclination angle, the vehicle's inclination angle is in a one-to-one correspondence with the road's inclination angle. When the vehicle's inclination angle is determined, the corresponding road inclination angle can be determined. The gyroscope can provide accurate angle data in real time by detecting the rotation and inclination angle of the vehicle in three-dimensional space. These data can reflect the inclination state of the vehicle on the road. The preset angle threshold can be adjusted according to actual driving needs and vehicle performance. For example, for general steep slopes, the preset angle threshold can be set to 10° to 15°, and for extreme steep slopes, the preset angle threshold can be set to 15° to 20°. In addition, the preset angle threshold can be flexibly adjusted according to the type of vehicle (such as a sedan, an off-road vehicle) and the driving scenario (such as an urban road, a mountain road, an off-road road).

[0055] When the tilt angle is greater than the preset angle threshold, the target driving mode of the vehicle is determined to be the sports mode. In the sports mode, the power output of the engine can be increased to provide stronger climbing ability, and the suspension system can be adjusted to improve the stability and passability of the vehicle. The body stability system is activated to help the vehicle maintain stability and prevent loss of control. In addition, the steep slope descent function can be turned on to help the vehicle maintain stability when going downhill. As a result, the climbing performance and driving safety of the vehicle on steep slopes are significantly improved. This automatic driving mode switching reflects the intelligence and humanity of intelligent driving technology, and can adapt to a variety of complex road conditions.

[0056] According to one embodiment of the present application, the method for switching the vehicle driving mode also includes: when the current road section is a multi-scene fusion section, determining the priority of the driving mode, wherein the priority order includes that the priority of the snow mode is greater than the priority of the rainy day mode, the priority of the rainy day mode is greater than the priority of the desert mode and the priority of the sports mode, and the priority of the desert mode and the priority of the sports mode are greater than the priority of the energy-saving mode.

[0057] Specifically, in actual driving, drivers will not encounter only a single road condition. During driving, they will encounter sections where multiple scenes are intertwined and integrated, such as snowy city main roads, rainy mud, snowy rainy days, snowy bumpy roads, etc. When the above sections appear, the car computer of each scene will sort its own judgment results. For safety first, the scenes will be sorted according to the following priority: snow> rainy days> sandy land & bumps (the two will not appear at the same time)> steep slope sections> city main roads. In other words, multi-scenario fusion sections refer to sections encountered by vehicles during driving that contain multiple complex road conditions at the same time, for example: snowy city main roads: both snow and traffic congestion, rainy mud: both rain and muddy roads, snowy steep slopes: both snow and steep slopes.

[0058] That is, in a multi-scenario fusion section, the vehicle needs to determine the final driving mode according to the priority rules. According to the embodiment of the present application, the priority order is as follows: the snow mode has the highest priority, the rainy day mode has the second highest priority, the desert mode has a lower priority than the rainy day mode, the sports mode has a lower priority than the rainy day mode, and is the same as the desert mode, and the energy-saving mode has the lowest priority.

[0059] Snow mode takes priority, that is, if the current road section has both snow and other complex road conditions (such as rain, steep slopes, etc.), the vehicle will switch to snow mode first. Because snow mode is the most critical in ensuring driving safety, especially on snowy or icy roads, the vehicle is prone to slipping and needs to be handled first. Rainy mode takes priority, that is, if the current road section has both rain and other complex road conditions (such as mud, congestion, etc.), the vehicle will switch to rainy mode first. Rainy mode can improve driving safety and vision clarity on slippery roads. Desert mode and sports mode: If the current road section has both desert road conditions and steep slope conditions, the vehicle will select desert mode or sports mode according to the specific situation. The two modes have the same priority, but the specific choice depends on the main road conditions. For example: If the road section is mainly sandy, the vehicle will switch to desert mode. If the road section is mainly steep slopes, the vehicle will switch to sports mode. Energy-saving mode has the lowest priority and will only be enabled when there are no other complex road conditions. Energy-saving mode is mainly used to reduce energy consumption and is suitable for driving under normal road conditions.

[0060] Through priority rules, vehicles can give priority to the most dangerous road conditions (such as snow and rain) to ensure driving safety. For example, city roads in snowy weather: when driving in snowy weather, even if there is congestion, the vehicle will switch to snow mode first to ensure safety on snowy roads. Mountain roads in rainy weather: when driving in rainy weather, even if there is a steep slope, the vehicle will switch to rainy mode first to ensure safety on slippery roads. In this way, it is ensured that the vehicle can switch to the safest and most appropriate driving mode first in multi-scenario fusion sections. This priority mechanism not only improves the driving safety of the vehicle in complex road conditions, but also improves the driving experience, reflecting the intelligence and humanity of intelligent driving technology.

[0061] In summary, according to the vehicle driving mode switching method of the embodiment of the present application, the weather information and / or road information during the current vehicle driving process is obtained, and the target driving mode of the vehicle is determined based on the weather information and / or road information. Within a preset time period, if the weather information and / or road information does not change, the current vehicle driving mode is switched to the target driving mode. As a result, the method can free the driver's hands and automatically switch the vehicle's driving mode, thereby effectively improving the driver's driving experience and the intelligent cockpit driving, and can be adapted to most smart vehicles on the market.

[0062] Corresponding to the above embodiments, the present application also proposes a vehicle.

[0063] like Figure 2 As shown, the vehicle 200 of the embodiment of the present application may include: a memory 210, a processor 220, and a program stored in the memory 210 and executable on the processor 220. When the processor 220 executes the program, the above-mentioned method for switching the vehicle driving mode is implemented.

[0064] According to the vehicle of the embodiment of the present application, by executing the above-mentioned vehicle driving mode switching method, the driver's hands can be freed and the vehicle's driving mode can be automatically switched, thereby effectively improving the driver's driving experience and cockpit driving intelligence, and can be adapted to most smart vehicles on the market.

[0065] Corresponding to the above-mentioned embodiment, the present application also proposes a vehicle driving mode switching device.

[0066] like Figure 3 As shown, the vehicle driving mode switching device 100 of the embodiment of the present application includes: an acquisition module 110, a determination module 120 and a switching module 130.

[0067] The acquisition module 110 is used to acquire weather information and / or road information during the current vehicle driving process. The determination module 120 is used to determine the target driving mode of the vehicle based on the weather information and / or road information. The switching module 130 is used to switch the current vehicle driving mode to the target driving mode if the weather information and / or road information does not change within a preset time period.

[0068] According to one embodiment of the present application, the weather information includes rainfall, and the determination module 120 determines the target driving mode of the vehicle based on the weather information, specifically for: when the rainfall is greater than or equal to a preset rainfall threshold, determining the target driving mode to be a rainy day mode, wherein the rainy day mode includes turning on the fog lights, turning on the rearview mirror heating, and turning on at least one of the vehicle body stability system.

[0069] According to one embodiment of the present application, the road information includes the degree of congestion of the road. The determination module 120 determines the target driving mode of the vehicle based on the road information, specifically for: when the congestion degree meets the preset congestion degree, determining the target driving mode to be the energy-saving mode.

[0070] According to one embodiment of the present application, the road information includes the degree of bumpiness of the road, and the degree of bumpiness includes a first degree of bumpiness, a second degree of bumpiness, and a third degree of bumpiness. The determination module 120 determines the target driving mode of the vehicle based on the road information, and is specifically used to: when the degree of bumpiness is the second degree of bumpiness or the third degree of bumpiness, determine that the target driving mode is a sport mode, wherein the vibration acceleration corresponding to the first degree of bumpiness is greater than a first preset acceleration threshold and less than a second preset acceleration threshold, the vibration frequency corresponding to the first degree of bumpiness is greater than a first preset frequency threshold and less than a second preset frequency threshold, and the vibration amplitude corresponding to the first degree of bumpiness is greater than a first preset amplitude threshold and less than a second preset amplitude threshold, the vibration acceleration corresponding to the second bumpiness degree is greater than or equal to the second preset acceleration threshold and less than the third preset acceleration threshold, the vibration frequency corresponding to the second bumpiness degree is greater than or equal to the second preset frequency threshold and less than the third preset frequency threshold, the vibration amplitude corresponding to the second bumpiness degree is greater than or equal to the second preset amplitude threshold and less than the third preset amplitude threshold, the vibration acceleration of the third bumpiness degree is greater than or equal to the third preset acceleration threshold, the vibration frequency corresponding to the third bumpiness degree is greater than or equal to the third preset frequency threshold, the vibration amplitude corresponding to the third bumpiness degree is greater than or equal to the third preset amplitude threshold, and the motion mode includes adjusting at least one of the vehicle's suspension system, power system and steering system.

[0071] According to one embodiment of the present application, the road information includes spectral information of the road, and the determination module 120 determines the target driving mode of the vehicle based on the road information, specifically for: determining whether the current road section is a snowy section or an icy section based on the spectral information; when the current road section is a snowy section or an icy section, determining the target driving mode to be a snow mode.

[0072] According to one embodiment of the present application, the road information includes the contact pressure between the vehicle's tires and the ground. The determination module 120 determines the target driving mode of the vehicle based on the road information, specifically for: determining whether the current road section is a sandy section or a muddy section based on the contact pressure; when the current road section is a sandy section or a muddy section, determining the target driving mode to be a sand mode.

[0073] According to one embodiment of the present application, the road information includes a road inclination angle, and the determination module 120 determines the target driving mode of the vehicle based on the road information, specifically for: when the inclination angle is greater than a preset angle threshold, determining that the target driving mode is a sport mode.

[0074] According to one embodiment of the present application, the determination module 120 is also used to: when the current road section is a multi-scenario fusion section, determine the priority of the driving mode, wherein the priority order includes that the priority of the snow mode is greater than the priority of the rainy day mode, the priority of the rainy day mode is greater than the priority of the desert mode and the priority of the sports mode, and the priority of the desert mode and the priority of the sports mode are greater than the priority of the energy-saving mode.

[0075] It should be noted that for details not disclosed in the vehicle driving mode switching device of the embodiment of the present application, please refer to the details disclosed in the vehicle driving mode switching method of the embodiment of the present application, and the details will not be repeated here.

[0076] According to the switching device of the vehicle driving mode of the embodiment of the present application, the acquisition module is used to obtain the weather information and / or road information during the current vehicle driving process, the determination module is used to determine the target driving mode of the vehicle based on the weather information and / or road information, and the switching module is used to switch the current vehicle driving mode to the target driving mode within a preset time period if the weather information and / or road information has not changed. As a result, the device can free the driver's hands and automatically switch the vehicle's driving mode, thereby effectively improving the driver's driving experience and the intelligent cockpit driving, and can be adapted to most smart vehicles on the market.

[0077] It should be noted that the logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be specifically implemented in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in combination with these instruction execution systems, devices or apparatuses. For the purposes of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in combination with these instruction execution systems, devices or apparatuses. More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection portion with one or more wirings (electronic device), a portable computer disk box (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium and then editing, interpreting or processing in other suitable ways if necessary, and then stored in a computer memory.

[0078] It should be understood that the various parts of the present application can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0079] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0080] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0081] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0082] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A method for switching a vehicle driving mode, characterized in that: The method comprises: Acquiring weather information and / or road information during the current driving of the vehicle; determining a target driving mode of the vehicle based on the weather information and / or the road information; Within a preset time period, if the weather information and / or the road information does not change, the current driving mode of the vehicle is switched to the target driving mode.

2. The method for switching a vehicle driving mode according to claim 1, characterized in that: The weather information includes rainfall, and determining the target driving mode of the vehicle based on the weather information includes: When the rainfall is greater than or equal to a preset rainfall threshold, the target driving mode is determined to be a rainy day mode, wherein the rainy day mode includes turning on at least one of fog lights, turning on rearview mirror heating, and turning on a vehicle body stability system.

3. The method for switching a vehicle driving mode according to claim 1, characterized in that: The road information includes a degree of road congestion, and determining a target driving mode of the vehicle based on the road information includes: When the congestion level meets a preset congestion level, the target driving mode is determined to be an energy-saving mode.

4. The method for switching a vehicle driving mode according to claim 1, characterized in that: The road information includes a bumpiness of the road, the bumpiness includes a first bumpiness, a second bumpiness, and a third bumpiness, and determining a target driving mode of the vehicle based on the road information includes: When the bumpiness level is the second bumpiness level or the third bumpiness level, the target driving mode is determined to be the sport mode, wherein the vibration acceleration corresponding to the first bumpiness level is greater than a first preset acceleration threshold and less than a second preset acceleration threshold, the vibration frequency corresponding to the first bumpiness level is greater than a first preset frequency threshold and less than a second preset frequency threshold, the vibration amplitude corresponding to the first bumpiness level is greater than a first preset amplitude threshold and less than a second preset amplitude threshold, the vibration acceleration corresponding to the second bumpiness level is greater than or equal to the second preset acceleration threshold and less than a third preset acceleration threshold, the vibration frequency corresponding to the second bumpiness level is greater than or equal to the second preset frequency threshold and less than a third preset frequency threshold, the vibration amplitude corresponding to the second bumpiness level is greater than or equal to the second preset amplitude threshold and less than a third preset amplitude threshold, the vibration acceleration of the third bumpiness level is greater than or equal to the third preset acceleration threshold, the vibration frequency corresponding to the third bumpiness level is greater than or equal to the third preset frequency threshold, and the vibration amplitude corresponding to the third bumpiness level is greater than or equal to the third preset amplitude threshold, and the sport mode includes adjusting at least one of a suspension system, a power system, and a steering system of the vehicle.

5. The method for switching a vehicle driving mode according to claim 1, characterized in that: The road information includes spectral information of the road, and determining the target driving mode of the vehicle based on the road information includes: Determine whether the current road section is a snowy road section or an icy road section based on the spectral information; When the current road section is the snowy road section or the icy road section, the target driving mode is determined to be the snow mode.

6. The method for switching a vehicle driving mode according to claim 1, characterized in that: The road information includes contact pressure between a tire of the vehicle and the ground, and determining a target driving mode of the vehicle based on the road information includes: determining whether the current road section is a sandy road section or a muddy road section based on the contact pressure; When the current road section is the sandy road section or the muddy road section, the target driving mode is determined to be the sandy mode.

7. The method for switching a vehicle driving mode according to claim 1, characterized in that: The road information includes a road inclination angle, and determining the target driving mode of the vehicle based on the road information includes: When the tilt angle is greater than a preset angle threshold, the target driving mode is determined to be a sports mode.

8. The method for switching a vehicle driving mode according to any one of claims 1 to 7, characterized in that: The method further comprises: When the current road section is a multi-scenario fusion section, the priority of the driving mode is determined, wherein the priority order includes that the priority of the snow mode is greater than the priority of the rainy day mode, the priority of the rainy day mode is greater than the priority of the desert mode and the priority of the sports mode, and the priority of the desert mode and the priority of the sports mode are greater than the priority of the energy-saving mode.

9. A vehicle, characterized in that: include: A memory, a processor, and a program stored in the memory and executable on the processor, wherein when the processor executes the program, the method for switching the vehicle driving mode according to any one of claims 1 to 8 is implemented.

10. A vehicle driving mode switching device, characterized in that: The device comprises: An acquisition module, used to acquire weather information and / or road information during the current driving process of the vehicle; a determination module, configured to determine a target driving mode of the vehicle based on the weather information and / or the road information; A switching module is used to switch the current driving mode of the vehicle to the target driving mode if the weather information and / or the road information does not change within a preset time period.

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