Speed limiting method and device of vehicle, vehicle and storage medium

Abstract

The present application relates to the field of intelligent driving of new energy vehicles, and particularly relates to a speed limiting method and device for a vehicle, the vehicle and a storage medium. The method comprises: acquiring a weather state, light intensity, speed limit sign, navigation speed limit information, current state of a driver and path planning information of a current vehicle of a road where the current vehicle is located; calculating a target speed limit value of the current vehicle according to the weather state, light intensity, speed limit sign, navigation speed limit information, current state of the driver and path planning information; and controlling the current vehicle to travel or decelerate according to the target speed limit value, so that an actual speed of the current vehicle is less than or equal to the target speed limit value. Thus, the maximum speed limit value is calculated according to multiple aspects to control the vehicle to travel, intelligent adjustment of the maximum speed limit of the vehicle is realized, the problem that the speed limit control cannot better guarantee the safety of intelligent driving in multiple scenarios at the present stage is solved, and the road traffic safety and driving comfort of the driver are improved.

Description

Technical Field

[0001] This invention relates to the field of intelligent driving for new energy vehicles, specifically to a method, device, vehicle, and storage medium for limiting the speed of a vehicle. Background Technology

[0002] With the rapid development of the automotive industry, automobiles have become a major means of transportation. However, as the number of cars on the road increases year by year, the development of road infrastructure and the improvement of driving habits have lagged behind, leading to a year-on-year increase in traffic accidents resulting in injuries, fatalities, and property damage. In traffic accident statistics, speeding accounts for a large proportion of all types of traffic accidents and injuries. Accidents caused by speeding are mainly rear-end collisions and single-vehicle accidents, which can easily lead to major and catastrophic accidents, causing serious injuries and property damage. Therefore, properly controlling vehicle speed is a crucial factor in ensuring the safety of intelligent assisted driving systems.

[0003] Among related technologies, intelligent speed limit technology mainly obtains information from road traffic speed limit signs or navigation speed limit information through a front camera, calculates the maximum speed limit of the vehicle, compares it with the current actual vehicle speed, and accelerates or decelerates the vehicle through a longitudinal speed control system.

[0004] Patent [CN103832282A] proposes an intelligent speed limiting system and method for automobiles. The intelligent speed limiting system includes: a camera that can identify road traffic signs and extract road traffic sign information using image processing technology; intelligent navigation that can provide real-time current road information, navigation route information, and information related to national or regional traffic speed limit regulations; vehicle body sensors that can provide real-time vehicle body information; and a controller that has an internal traffic speed limit sign database. The controller's input terminals are connected to the camera, intelligent navigation, and vehicle body sensors, respectively, and the controller's output terminals are connected to the vehicle's instrument panel and engine ECU, respectively.

[0005] However, this method can only calculate the applicable speed limit information for the actual vehicle based on information provided by cameras, intelligent navigation, and vehicle sensors, combined with information from a traffic speed limit sign database, in order to control the vehicle's acceleration or deceleration. However, it does not dynamically adjust the maximum speed limit under different weather conditions (such as rain or poor visibility at night), driver's condition (whether the driver is fatigued), and route planning (such as entering and exiting ramps), failing to better guarantee the safety of intelligent driving in multiple scenarios, which urgently needs to be addressed. Summary of the Invention

[0006] One objective of this invention is to provide a vehicle speed limiting method to solve the problem that speed limiting control in the prior art cannot better guarantee the safety of intelligent driving in multiple scenarios; a second objective is to provide a vehicle speed limiting device; a third objective is to provide a vehicle; and a fourth objective is to provide a computer-readable storage medium.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0008] A method for limiting the speed of a vehicle includes the following steps:

[0009] Obtain the weather conditions, light intensity, speed limit signs, navigation speed limit information, driver's current status, and the current vehicle's route planning information for the road where the vehicle is currently located;

[0010] The target speed limit for the current vehicle is calculated based on the weather conditions, light intensity, speed limit signs, navigation speed limit information, the driver's current state, and route planning information; and

[0011] The current vehicle is controlled to move or decelerate according to the target speed limit value, so that the actual speed of the current vehicle is less than or equal to the target speed limit value.

[0012] Based on the above-mentioned technical means, the present invention realizes intelligent assisted driving on highway speed-limited sections. It intelligently adjusts the maximum speed limit of the vehicle by comprehensively considering environmental conditions (including weather conditions and light intensity), route planning information, and the driver's current state (whether the driver is fatigued), thereby improving road traffic safety and driver comfort.

[0013] Further, the step of calculating the target speed limit value for the current vehicle based on the weather conditions, light intensity, speed limit sign, navigation speed limit information, the driver's current state, and route planning information includes:

[0014] The first speed limit of the current vehicle is determined based on the speed limit sign, the second speed limit of the current vehicle is determined based on the navigation speed limit information, the third speed limit of the current vehicle is determined based on the first speed limit and the current state of the driver, the fourth speed limit of the current vehicle is determined based on the first speed limit, the weather conditions and the light intensity, and the fifth speed limit of the current vehicle is determined based on the first speed limit and the route planning information.

[0015] The minimum value among the first speed limit, the second speed limit, the third speed limit, the fourth speed limit, and the fifth speed limit is taken as the target speed limit.

[0016] Based on the aforementioned technical means, this invention calculates the maximum target speed limit of a vehicle by combining existing calculations based on road speed limit signs and navigation speed limit information with weather conditions, light intensity, driver's current state, and route planning information, thereby better ensuring the safety of intelligent driving in multiple scenarios.

[0017] Further, determining the first speed limit value of the current vehicle based on the speed limit sign includes:

[0018] The speed limit sign is processed graphically to obtain the numerical value within the speed limit sign.

[0019] The value in the speed limit sign is taken as the first speed limit value.

[0020] Based on the above technical means, the present invention can obtain the numerical value within the speed limit sign by performing graphic processing on the road speed limit sign, which serves as the first speed limit value of the present invention.

[0021] Further, determining the third speed limit for the current vehicle based on the first speed limit and the driver's current state includes:

[0022] Determine whether the driver is in a preset fatigue state based on the current state;

[0023] If the driver is in the preset fatigue state, the third speed limit is obtained based on the difference between the first speed limit and the preset fatigue speed limit; otherwise, the first speed limit is used as the third speed limit.

[0024] Based on the aforementioned technical means, the third speed limit of the vehicle is determined by judging whether the driver is in a state of fatigue driving, so as to ensure the driver's safe driving.

[0025] Further, determining the fourth speed limit for the current vehicle based on the first speed limit, the weather conditions, and the light intensity includes:

[0026] Determine whether the weather conditions meet the preset speed limit conditions, or whether the light intensity is less than the preset light intensity;

[0027] If the weather conditions meet the preset speed limit conditions, or if the light intensity is less than the preset light intensity, then the preset speed value is used as the fourth speed limit value; otherwise, the first speed limit value is used as the fourth speed limit value.

[0028] Based on the above-mentioned technical means, the present invention calculates a fourth speed limit value by combining weather conditions and light intensity through the vehicle's perception system, so as to ensure that the driver can drive at a relatively safe speed when visibility is poor or the braking distance is long.

[0029] Further, determining the fifth speed limit for the current vehicle based on the first speed limit and the route planning information includes:

[0030] Based on the path planning information, it is determined whether the current vehicle is in the rightmost lane and enters the ramp after traveling a preset distance;

[0031] If the current vehicle is in the rightmost lane and enters the ramp after traveling the preset distance, the preset planned speed limit value will be used as the fifth speed limit value; otherwise, the first speed limit value will be used as the fifth speed limit value.

[0032] Based on the above-mentioned technical means, the present invention determines the fifth speed limit value by identifying whether a vehicle is about to enter the ramp based on the path information, so as to ensure that the vehicle can enter the ramp at a safer speed when entering the ramp from the main road, and at the same time improve the success rate of the vehicle entering the ramp.

[0033] A speed limiting device for a vehicle, comprising:

[0034] The acquisition module is used to acquire the weather conditions, light intensity, speed limit signs, navigation speed limit information, driver's current status, and the current vehicle's route planning information of the road where the vehicle is currently located.

[0035] The calculation module is used to calculate the target speed limit value of the current vehicle based on the weather conditions, light intensity, speed limit signs, navigation speed limit information, the driver's current state, and route planning information; and

[0036] The control module is used to control the current vehicle to move or decelerate according to the target speed limit value, so that the actual speed of the current vehicle is less than or equal to the target speed limit value.

[0037] Furthermore, the computing module is specifically used for:

[0038] The first speed limit of the current vehicle is determined based on the speed limit sign, the second speed limit of the current vehicle is determined based on the navigation speed limit information, the third speed limit of the current vehicle is determined based on the first speed limit and the current state of the driver, the fourth speed limit of the current vehicle is determined based on the first speed limit, the weather conditions and the light intensity, and the fifth speed limit of the current vehicle is determined based on the first speed limit and the route planning information.

[0039] The minimum value among the first speed limit, the second speed limit, the third speed limit, the fourth speed limit, and the fifth speed limit is taken as the target speed limit.

[0040] Furthermore, the computing module is specifically used for:

[0041] The speed limit sign is processed graphically to obtain the numerical value within the speed limit sign.

[0042] The value in the speed limit sign is taken as the first speed limit value.

[0043] Furthermore, the computing module is specifically used for:

[0044] Determine whether the driver is in a preset fatigue state based on the current state;

[0045] If the driver is in the preset fatigue state, the third speed limit is obtained based on the difference between the first speed limit and the preset fatigue speed limit; otherwise, the first speed limit is used as the third speed limit.

[0046] Furthermore, the computing module is specifically used for:

[0047] Determine whether the weather conditions meet the preset speed limit conditions, or whether the light intensity is less than the preset light intensity;

[0048] If the weather conditions meet the preset speed limit conditions, or if the light intensity is less than the preset light intensity, then the preset speed value is used as the fourth speed limit value; otherwise, the first speed limit value is used as the fourth speed limit value.

[0049] Furthermore, the computing module is specifically used for:

[0050] Based on the path planning information, it is determined whether the current vehicle is in the rightmost lane and enters the ramp after traveling a preset distance;

[0051] If the current vehicle is in the rightmost lane and enters the ramp after traveling the preset distance, the preset planned speed limit value will be used as the fifth speed limit value; otherwise, the first speed limit value will be used as the fifth speed limit value.

[0052] A vehicle includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, the processor executing the program to implement the speed limiting method for the vehicle as described in the above embodiments.

[0053] A computer-readable storage medium having a computer program stored thereon, the program being executed by a processor to implement a vehicle speed limiting method as described in the above embodiments.

[0054] The beneficial effects of this invention are:

[0055] In high-speed intelligent assisted driving, based on the current road speed limit signs and the maximum speed limit of the navigation, and taking into account the weather, driver status and route planning, the maximum speed limit of the current vehicle can be intelligently adjusted to better ensure the safety of intelligent driving in multiple scenarios. Attached Figure Description

[0056] Figure 1 A flowchart illustrating a vehicle speed limiting method according to an embodiment of the present invention;

[0057] Figure 2 This is a schematic diagram illustrating the implementation steps of a vehicle speed limiting method according to an embodiment of the present invention;

[0058] Figure 3 A block diagram of a speed limiting device for a vehicle according to an embodiment of the present invention;

[0059] Figure 4 This is a schematic diagram of the structure of a vehicle according to an embodiment of the present invention.

[0060] Among them, 10-vehicle speed limiting device, 100-acquisition module, 200-computation module, 300-control module, 401-memory, 402-processor, and 403-communication interface. Detailed Implementation

[0061] The embodiments of the present invention will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for illustrating the present invention and not for limiting the scope of protection of the present invention.

[0062] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0063] Specifically, Figure 1 This is a flowchart of a vehicle speed limiting method provided in an embodiment of the present invention.

[0064] like Figure 1 As shown, the speed limiting method for this vehicle includes the following steps:

[0065] In step S101, the weather conditions, light intensity, speed limit signs, navigation speed limit information, driver's current status, and current vehicle route planning information of the road where the vehicle is currently located are obtained.

[0066] It is understandable that the maximum speed limit of vehicles in related technologies is generally obtained according to the speed limit signs on the road and the speed limit information provided by the navigation. In order to improve the safety of intelligent driving in multiple scenarios, the following points should be noted: (1) In bad weather (such as rainy days and nights with poor visibility), the vehicle speed should not be too fast; (2) When the driver is fatigued, the vehicle speed should be appropriately reduced; (3) When the vehicle needs to enter or exit the ramp, the vehicle speed needs to be controlled within a certain speed limit.

[0067] In this embodiment of the invention, weather conditions and light intensity are obtained through a sensing system, speed limit sign information is obtained through a forward-looking camera detection device, navigation speed limit information is obtained through a high-precision map navigation system, the current state of the driver (whether the driver is fatigued) is obtained through a DMS (Driver Monitor System), and the route planning information (whether to enter or exit ramps) of the current road is obtained through a route planning module.

[0068] In step S102, the target speed limit value of the current vehicle is calculated based on weather conditions, light intensity, speed limit signs, navigation speed limit information, the driver's current status, and route planning information.

[0069] Furthermore, in some embodiments, calculating the target speed limit value for the current vehicle based on weather conditions, light intensity, speed limit signs, navigation speed limit information, the driver's current state, and route planning information includes: determining a first speed limit value for the current vehicle based on speed limit signs, determining a second speed limit value for the current vehicle based on navigation speed limit information, determining a third speed limit value for the current vehicle based on the first speed limit value and the driver's current state, determining a fourth speed limit value for the current vehicle based on the first speed limit value, weather conditions, and light intensity, and determining a fifth speed limit value for the current vehicle based on the first speed limit value and route planning information; and using the minimum value among the first, second, third, fourth, and fifth speed limits as the target speed limit value.

[0070] Specifically, when the vehicle is traveling at high speed, the vehicle's intelligent driver assistance functions are activated, and various modules in the intelligent speed limit system begin to operate. For example... Figure 2As shown, in this embodiment of the invention, the actual maximum speed limit of the vehicle (i.e., the target speed limit) can be calculated by multiple modules starting timed tasks, including: determining the maximum speed limit value of the road speed limit sign detected by the forward-looking camera as the first speed limit value Vmax1 of the current vehicle; determining the maximum speed limit value in the navigation speed limit information provided by the high-precision map navigation as the second speed limit value Vmax2 of the current vehicle; and the DMS system detecting whether the driver's current state is fatigued, and determining the third speed limit value Vmax3 of the current vehicle based on the first speed limit value and the driver's current state, i.e., Vmax3 =Vmax1 – flag * 20, where flag is 1 if the driver is currently fatigued, and 0 if not fatigued; the perception system detects the current weather conditions and light intensity. If the current weather is rainy or dark, the fourth speed limit value Vmax4 is determined to be 100 km / h; otherwise, Vmax4 = Vmax1; the path planning module detects whether the current vehicle is in the rightmost lane and preparing to enter the ramp. If so, the fifth speed limit value Vmax5 is determined to be 80 km / h; otherwise, Vmax5 = Vmax1. Therefore, this embodiment of the invention obtains the weather conditions, light intensity, speed limit signs, navigation speed limit information, the driver's current state, and the current vehicle's path planning information of the road where the vehicle is located. The speed limit values ​​calculated by each module based on the corresponding information are input into the actual speed limit calculation module, and the minimum value is taken as the target speed limit value Vmax for the current vehicle.

[0071] In some embodiments, determining the first speed limit value of the current vehicle based on the speed limit sign includes: performing graphic processing on the speed limit sign to obtain the value within the speed limit sign; and using the value within the speed limit sign as the first speed limit value.

[0072] Specifically, the forward-facing camera identifies the road speed limit sign, and uses image processing technology to process the speed limit sign to obtain the value within the speed limit sign, which is the first speed limit value Vmax1 for the current vehicle. This value is then output to the input of the actual speed limit calculation module.

[0073] It should be noted that, in order to avoid excessive system resource consumption due to frequent function calls, this step is performed when a new road speed limit sign is detected.

[0074] Furthermore, in some embodiments, determining the third speed limit of the current vehicle based on the first speed limit and the driver's current state includes: determining whether the driver is in a preset fatigue state based on the current state; if the driver is in a preset fatigue state, then obtaining the third speed limit based on the difference between the first speed limit and the preset fatigue speed limit; otherwise, using the first speed limit as the third speed limit.

[0075] Specifically, the DMS system periodically monitors the driver's state. When the driver yawns, has a blank expression, or frequently closes their eyes, it is determined that the driver is currently in a preset fatigue state (i.e., driving while fatigued). The third speed limit value Vmax3 is then calculated based on the difference between the first speed limit value and the preset fatigue speed limit value (i.e., driving while fatigued, flag=1; driving without fatigue, flag=0), i.e., Vmax3 = Vmax1 – flag*20 = Vmax1 – 20. If the driver is attentive and not driving while fatigued, it is determined that the driver is not currently in a preset fatigue state (i.e., driving without fatigue), and the third speed limit value Vmax3 = Vmax1.

[0076] Furthermore, in some embodiments, determining the fourth speed limit of the current vehicle based on the first speed limit value, weather conditions, and light intensity includes: determining whether the weather conditions meet the preset speed limit conditions, or whether the light intensity is less than the preset light intensity; if the weather conditions meet the preset speed limit conditions, or the light intensity is less than the preset light intensity, then the preset speed value is used as the fourth speed limit value; otherwise, the first speed limit value is used as the fourth speed limit value.

[0077] Specifically, the perception system uses comprehensive information from devices such as the forward-facing camera to determine whether the current weather conditions meet the preset speed limit conditions (i.e., whether it is raining) or whether the light intensity is less than the preset light intensity (i.e., whether it is night). If so, the preset speed value is used as the fourth speed limit value for the current vehicle, i.e., Vmax4 = 100 km / h. This limit is to ensure that the vehicle can travel at a relatively safe speed in situations with poor visibility and long braking distances. If it is daytime and the weather is clear, the first speed limit value is used as the fourth speed limit value, i.e., Vmax4 = Vmax1.

[0078] Furthermore, in some embodiments, determining the fifth speed limit of the current vehicle based on the first speed limit and route planning information includes: identifying whether the current vehicle is in the rightmost lane and has entered the ramp after traveling a preset distance based on the route planning information; if the current vehicle is in the rightmost lane and has entered the ramp after traveling a preset distance, then the preset planned speed limit is used as the fifth speed limit; otherwise, the first speed limit is used as the fifth speed limit.

[0079] Specifically, based on the path planning information provided by the path planning module, if the system identifies that the vehicle is currently traveling in the rightmost lane and is about to enter the ramp after traveling a preset distance (e.g., 200m), then the preset planned speed limit is used as the fifth speed limit, i.e., Vmax5 = 80km / h. Otherwise, the first speed limit is used as the fifth speed limit, i.e., Vmax5 = Vmax1. This scheme aims to ensure that vehicles can enter the ramp at a safe speed from the main road, while also improving the success rate of vehicles entering the ramp.

[0080] In step S103, the current vehicle is controlled to move or decelerate according to the target speed limit value, so that the actual speed of the current vehicle is less than or equal to the target speed limit value.

[0081] Specifically, in this embodiment of the invention, the actual speed limit calculation module is set to be executed at regular intervals. It calculates the speed limit values ​​input by each module, takes the minimum value Vmax = min(Vmax1, Vmax2, Vmax3, Vmax4, Vmax5) as the target speed limit value of the current vehicle, and outputs it to the electronic control unit (ECU) of the vehicle speed control module. By comparing the target speed limit value Vmax with the current vehicle speed Vreal, the vehicle is controlled to drive or decelerate to ensure that the vehicle drives within the specified maximum speed limit, that is, the current vehicle speed is less than or equal to the target speed limit value.

[0082] The vehicle speed limiting method proposed in this embodiment calculates the target speed limit for the current vehicle based on the acquired weather conditions, light intensity, speed limit signs, navigation speed limit information, driver's current state, and the vehicle's route planning information. The method then controls the vehicle's movement or deceleration according to the target speed limit, ensuring that the vehicle's actual speed is less than or equal to the target speed limit. Thus, by calculating the maximum speed limit based on multiple factors, the method achieves intelligent adjustment of the vehicle's maximum speed limit, solving the problem that current speed limit control cannot adequately guarantee the safety of intelligent driving in various scenarios, thereby improving road traffic safety and driver comfort.

[0083] Secondly, a speed limiting device for a vehicle according to an embodiment of the present invention will be described with reference to the accompanying drawings.

[0084] Figure 3 This is a block diagram of a vehicle speed limiting device according to an embodiment of the present invention.

[0085] like Figure 3 As shown, the speed limiting device 10 of the vehicle includes: an acquisition module 100, a calculation module 200, and a control module 300.

[0086] The acquisition module 100 is used to acquire the weather conditions, light intensity, speed limit signs, navigation speed limit information, driver's current status, and current vehicle route planning information of the road where the vehicle is currently located.

[0087] Calculation module 200 is used to calculate the target speed limit value for the current vehicle based on weather conditions, light intensity, speed limit signs, navigation speed limit information, the driver's current status, and route planning information; and

[0088] The control module 300 is used to control the current vehicle to move or decelerate according to the target speed limit value, so that the actual speed of the current vehicle is less than or equal to the target speed limit value.

[0089] Furthermore, in some embodiments, the computing module 200 is specifically used for:

[0090] The first speed limit for the current vehicle is determined based on the speed limit sign, the second speed limit for the current vehicle is determined based on the navigation speed limit information, the third speed limit for the current vehicle is determined based on the first speed limit and the driver's current status, the fourth speed limit for the current vehicle is determined based on the first speed limit, weather conditions and light intensity, and the fifth speed limit for the current vehicle is determined based on the first speed limit and route planning information.

[0091] The minimum value among the first, second, third, fourth, and fifth speed limits is taken as the target speed limit.

[0092] Furthermore, in some embodiments, the computing module 200 is specifically used for:

[0093] The speed limit sign is processed graphically to obtain the numerical value within the speed limit sign.

[0094] The value in the speed limit sign shall be used as the first speed limit value.

[0095] Furthermore, in some embodiments, the computing module 200 is specifically used for:

[0096] Determine whether the driver is in a preset fatigue state based on the current status;

[0097] If the driver is in a preset fatigue state, the third speed limit is obtained based on the difference between the first speed limit and the preset fatigue speed limit; otherwise, the first speed limit is used as the third speed limit.

[0098] Furthermore, in some embodiments, the computing module 200 is specifically used for:

[0099] Determine whether the weather conditions meet the preset speed limit conditions, or whether the light intensity is less than the preset light intensity;

[0100] If the weather conditions meet the preset speed limit conditions, or the light intensity is less than the preset light intensity, then the preset speed value will be used as the fourth speed limit value; otherwise, the first speed limit value will be used as the fourth speed limit value.

[0101] Furthermore, in some embodiments, the computing module 200 is specifically used for:

[0102] Based on the route planning information, identify whether the current vehicle is in the rightmost lane and enter the ramp after traveling a preset distance;

[0103] If the vehicle is currently in the rightmost lane and enters the ramp after traveling a preset distance, the preset planned speed limit will be used as the fifth speed limit; otherwise, the first speed limit will be used as the fifth speed limit.

[0104] It should be noted that the explanation of the above-described embodiment of the vehicle speed limiting method also applies to the vehicle speed limiting device of this embodiment, and will not be repeated here.

[0105] The vehicle speed limiting device proposed in this embodiment calculates the target speed limit value for the current vehicle based on the acquired weather conditions, light intensity, speed limit signs, navigation speed limit information, driver's current state, and the vehicle's route planning information. The device then controls the vehicle's movement or deceleration according to the target speed limit value, ensuring that the vehicle's actual speed is less than or equal to the target speed limit. Thus, by calculating the maximum speed limit value based on multiple factors to control vehicle movement, intelligent adjustment of the vehicle's maximum speed limit is achieved. This solves the problem that current speed limit control cannot adequately guarantee the safety of intelligent driving in various scenarios, improving road traffic safety and driver comfort.

[0106] Figure 4 This is a schematic diagram of a vehicle provided in an embodiment of the present invention. The vehicle may include:

[0107] The memory 401, the processor 402, and the computer program stored on the memory 401 and capable of running on the processor 402.

[0108] When processor 402 executes the program, it implements the vehicle speed limiting method provided in the above embodiments.

[0109] Furthermore, the vehicle also includes:

[0110] Communication interface 403 is used for communication between memory 401 and processor 402.

[0111] The memory 401 is used to store computer programs that can run on the processor 402.

[0112] The memory 401 may include high-speed RAM (Random Access Memory) memory, and may also include non-volatile memory, such as at least one disk storage.

[0113] If the memory 401, processor 402, and communication interface 403 are implemented independently, then the communication interface 403, memory 401, and processor 402 can be interconnected via a bus to complete communication between them. The bus can be an ISA (Industry Standard Architecture) bus, a PCI (Peripheral Component Interconnect) bus, or an EISA (Extended Industry Standard Architecture) bus, etc. The bus can be divided into address bus, data bus, control bus, etc. For ease of representation, Figure 4 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0114] Optionally, in a specific implementation, if the memory 401, processor 402, and communication interface 403 are integrated on a single chip, then the memory 401, processor 402, and communication interface 403 can communicate with each other through an internal interface.

[0115] Processor 402 may be a CPU (Central Processing Unit), an ASIC (Application Specific Integrated Circuit), or one or more integrated circuits configured to implement embodiments of the present invention.

[0116] This invention also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the above-described vehicle speed limiting method.

[0117] The above embodiments are merely preferred embodiments provided to fully illustrate the present invention, and the scope of protection of the present invention is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present invention are all within the scope of protection of the present invention.

Claims

1. A method for limiting the speed of a vehicle, characterized in that, Includes the following steps: Obtain the weather conditions, light intensity, speed limit signs, navigation speed limit information, driver's current status, and the current vehicle's route planning information for the road where the vehicle is currently located; The target speed limit value of the current vehicle is calculated based on the weather conditions, light intensity, speed limit signs, navigation speed limit information, the driver's current status, and route planning information. as well as The current vehicle is controlled to move or decelerate according to the target speed limit value, so that the actual speed of the current vehicle is less than or equal to the target speed limit value; The step of calculating the target speed limit value of the current vehicle based on the weather conditions, light intensity, speed limit signs, navigation speed limit information, the driver's current state, and route planning information includes: determining a first speed limit value of the current vehicle based on the speed limit signs, determining a second speed limit value of the current vehicle based on the navigation speed limit information, determining a third speed limit value of the current vehicle based on the first speed limit value and the driver's current state, determining a fourth speed limit value of the current vehicle based on the first speed limit value, the weather conditions, and the light intensity, determining a fifth speed limit value of the current vehicle based on the first speed limit value and the route planning information, and taking the minimum value among the first speed limit value, the second speed limit value, the third speed limit value, the fourth speed limit value, and the fifth speed limit value as the target speed limit value.

2. The method according to claim 1, characterized in that, Determining the first speed limit value of the current vehicle based on the speed limit sign includes: The speed limit sign is processed graphically to obtain the numerical value within the speed limit sign. The value in the speed limit sign is taken as the first speed limit value.

3. The method according to claim 1 or 2, characterized in that, Determining the third speed limit for the current vehicle based on the first speed limit and the driver's current state includes: Determine whether the driver is in a preset fatigue state based on the current state; If the driver is in the preset fatigue state, the third speed limit is obtained based on the difference between the first speed limit and the preset fatigue speed limit; otherwise, the first speed limit is used as the third speed limit.

4. The method according to claim 1 or 2, characterized in that, Determining the fourth speed limit for the current vehicle based on the first speed limit, the weather conditions, and the light intensity includes: Determine whether the weather conditions meet the preset speed limit conditions, or whether the light intensity is less than the preset light intensity; If the weather conditions meet the preset speed limit conditions, or if the light intensity is less than the preset light intensity, then the preset speed value is used as the fourth speed limit value; otherwise, the first speed limit value is used as the fourth speed limit value.

5. The method according to claim 1 or 2, characterized in that, Determining the fifth speed limit for the current vehicle based on the first speed limit and the route planning information includes: Based on the path planning information, it is determined whether the current vehicle is in the rightmost lane and enters the ramp after traveling a preset distance; If the current vehicle is in the rightmost lane and enters the ramp after traveling the preset distance, the preset planned speed limit value will be used as the fifth speed limit value; otherwise, the first speed limit value will be used as the fifth speed limit value.

6. A speed limiting device for a vehicle, characterized in that, include: The acquisition module is used to acquire the weather conditions, light intensity, speed limit signs, navigation speed limit information, driver's current status, and the current vehicle's route planning information of the road where the vehicle is currently located. The calculation module is used to calculate the target speed limit value of the current vehicle based on the weather conditions, the light intensity, the speed limit sign, the navigation speed limit information, the driver's current state, and the route planning information. as well as The control module is used to control the current vehicle to move or decelerate according to the target speed limit value, so that the actual speed of the current vehicle is less than or equal to the target speed limit value; Specifically, the calculation module is used to: determine a first speed limit value for the current vehicle based on the speed limit sign; determine a second speed limit value for the current vehicle based on the navigation speed limit information; determine a third speed limit value for the current vehicle based on the first speed limit value and the driver's current state; determine a fourth speed limit value for the current vehicle based on the first speed limit value, the weather conditions, and the light intensity; determine a fifth speed limit value for the current vehicle based on the first speed limit value and the route planning information; and take the minimum value among the first speed limit value, the second speed limit value, the third speed limit value, the fourth speed limit value, and the fifth speed limit value as the target speed limit value.

7. A vehicle, characterized in that, include: A memory, a processor, and a computer program stored in the memory and executable on the processor, the processor executing the program to implement the speed limiting method for a vehicle as described in any one of claims 1-5.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that, The program is executed by the processor to implement the speed limiting method for the vehicle as described in any one of claims 1-5.

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