CN115071681A

CN115071681A - Automatic control method and system for vehicle speed in rainy days, electronic equipment and storage medium

Info

Publication number: CN115071681A
Application number: CN202210745315.3A
Authority: CN
Inventors: 刘大全; 张英鹏; 张磊; 顾秀颖
Original assignee: Chongqing Changan Automobile Co Ltd
Current assignee: Chongqing Changan Automobile Co Ltd
Priority date: 2022-06-27
Filing date: 2022-06-27
Publication date: 2022-09-20

Abstract

The invention provides a method, a device and a system for controlling vehicle speed in rainy days, electronic equipment and a storage medium, wherein the method comprises the following steps: acquiring environmental information of vehicle running; obtaining weather data and rainfall data according to the environment information; if the current weather data is rainy, controlling the running speed of the vehicle according to the preset mapping relation between the rainfall data and different vehicle speed ranges; the rainfall data comprises rainfall signal duration, rainfall size and rain stopping, the rainfall is judged according to the rainfall signal duration, correct response is carried out on the rainfall, and the condition that the rainfall is misjudged as the rainfall due to temporary factor influence and troubles are caused to users is avoided; the graded response processing is carried out based on the rainfall, the speed is automatically limited under the heavy rain condition, the condition that a driver cannot respond in time is avoided, and the driving safety in rainy days is improved.

Description

Automatic control method and system for vehicle speed in rainy days, electronic equipment and storage medium

Technical Field

The application relates to the technical field of automobile vehicle control, in particular to a method and a system for automatically controlling vehicle speed in rainy days, electronic equipment and a storage medium.

Background

With the development of economy and the improvement of the living standard of people, automobiles become indispensable vehicles in modern society. The rapid development of the automobile industry brings convenience to people, and meanwhile, the traffic safety becomes a focus of increasing attention of people. The proportion of traffic accidents caused by wet and slippery road surfaces due to bad weather such as rainy days and snowy days is more prominent, wherein rain is the most common bad weather in various regions.

In recent years, with the development of automobile control technology and the deepening of the field of automobile control, methods for controlling the driving of vehicles in rainy days and other weather conditions are deepened gradually.

The chinese invention patent CN110979278A discloses an automatic emergency braking control method based on rainfall, which can realize the collection of the conditions outside the vehicle in the rainy day, judge the rainfall by means of radar, and judge the distance between the vehicles ahead to perform emergency braking. However, emergency braking is only the last line of defense, and it is difficult to avoid accidents caused by drivers who have insufficient safety awareness and even neglect rainy days. Due to the wrong estimation of adverse effects on driving in rainy days, the occurrence of traffic safety accidents is not rare, and the accidents bring a lot of adverse effects on social development and family happiness. In the automatic emergency braking control method disclosed in chinese patent CN110979278A, only the distance of the preceding vehicle is determined, and the situation that emergency occurs in rainy days and the braking cannot be triggered in time is ignored, especially the excessive confidence caused by psychological dependence on the existing automatic braking is easy to occur, or the adverse effect on driving caused by slippery road in rainy days is not noticed, but the driving in rainy days is not careful. Therefore, in order to reduce the safety risk caused by the emergency braking, it is necessary to further develop a system method capable of controlling the running speed of the vehicle in rainy days so as to further improve the driving safety of the vehicle.

Disclosure of Invention

In view of the above-mentioned shortcomings of the prior art, the present invention provides a method, a system, an electronic device and a storage medium for automatically controlling vehicle speed in rainy days, so as to solve the above-mentioned technical problems.

In order to achieve the above and other related objects, a first aspect of the present invention provides a method for automatically controlling a vehicle speed in a rainy day, including:

acquiring environmental information of vehicle running;

obtaining weather data and rainfall data according to the environment information;

and if the current weather data is rainy, controlling the running speed of the vehicle according to the preset mapping relation between the rainfall data and different vehicle speed ranges.

And further, obtaining weather data and rainfall data according to the environmental information, and sensing the water quantity of a front windshield of the vehicle through a rainfall sensor to obtain the rainfall data.

Further, the rainfall data comprises rainfall signal duration, rainfall size and rain stopping, and when the rainfall signal duration exceeds a preset time, the raining day is judged; judging the rainfall signal to be in a non-rainy day when the duration time of the rainfall signal does not exceed the preset time;

when the rainfall is larger than a preset threshold value, judging the rainfall to be in a heavy rain state; and when the rainfall is smaller than a preset threshold value, judging the rainfall to be in a light rain state.

And further, carrying out graded response processing according to the rainfall, not carrying out operation in a light rain state, carrying out speed-limiting operation in a heavy rain state, and finishing response in a rain stopping state.

Further, the hierarchical response processing further includes:

after speed limiting, if the rainfall is monitored to be heavy rain continuously, speed limiting control and rainfall change monitoring are continuously carried out; if the rainfall is monitored to be reduced and the heavy rain standard cannot be met, releasing the speed limit, continuously monitoring the rainfall change and judging the rainfall; if the rain is stopped, ending the response;

if the rainfall is monitored to be increased into heavy rain, limiting the speed; if the rainfall is not increased to be heavy rain, continuously monitoring the rainfall change, and judging whether the rain falls and the rainfall; if the rain is stopped, the response is finished.

Further, the automatic control method for the vehicle speed in the rainy day further comprises the following steps: and if the current weather data is rainy, reminding the user.

Further, if current weather data is rainy day, then remind the user according to the rainfall data that predetermine, remind the mode and include: when the rain is judged to be light rain according to the preset rainfall data, a signal is sent out through the vehicle machine to remind a user of paying attention to weather and driving safely; and/or when the vehicle is judged to be raining, the vehicle machine sends a signal to remind a user of limiting the speed of the vehicle.

A second aspect of the present invention provides an automatic vehicle speed control system in rainy days, the system comprising:

the vehicle running environment information acquisition module is used for acquiring vehicle running environment information;

the data processing module is used for obtaining weather data and rainfall data according to the environment information;

and the vehicle control module is used for controlling the running speed of the vehicle according to the preset mapping relation between the rainfall data and different vehicle speed ranges if the current weather data is rainy.

Further, the vehicle driving environment information acquisition module comprises a rainfall sensor, and the rainfall sensor is used for receiving rainfall signals in real time.

Further, the vehicle control module is also used for sending a signal to the vehicle-mounted device to remind a user of paying attention to weather conditions, driving safely and/or reminding the user of limiting speed. A third aspect of the present invention provides an electronic device comprising:

one or more processors;

a storage device for storing one or more computer programs that, when executed by the one or more processors, cause the electronic device to implement the rainy vehicle speed control method according to the first aspect.

A fourth aspect of the present invention provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor of a computer, causes the computer to execute the rainy-day vehicle speed control method according to the first aspect.

As described above, the method, the system, the electronic device and the storage medium for automatically controlling the vehicle speed in the rainy day according to the present invention have the following advantages:

the invention has developed a method and system for controlling the vehicle running speed on the basis of rainy day, judge the temporary situation that the front windshield may cause the water droplet too through discerning like the situation of sprinkler, distinguish whether really rains, because the above-mentioned temporary situation target is obvious, the driver of the car can definitely respond to it, needn't trigger the system in this way, avoid causing the trouble to the user; by judging the rainfall, monitoring the rainfall change, and carrying out graded response processing based on the rainfall, carrying out speed limitation in heavy rain weather and continuously monitoring the rainfall change in non-heavy rain weather so as to avoid that a driver does not notice slippery road in rainy days, is not careful in rainy days, excessively depends on an automatic braking system or excessively confidents the driving technology of the driver; in addition, the vehicle-mounted automatic speed limiting system can remind a user through the vehicle machine, remind a driver of limiting the speed in heavy rain, and avoid the problem of the automatic speed limiting system and further reduce the safety risk by combining automatic speed limiting and manual control.

The invention is helpful for improving the traffic safety awareness of the driver and ensuring the life and property safety of the driver.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

FIG. 1 is a schematic diagram of an automotive vehicle interface shown in an exemplary embodiment of the present application;

FIG. 2 is a flow chart illustrating a method for automatically controlling vehicle speed in rainy weather in accordance with an exemplary embodiment of the present application;

FIG. 3 is a block diagram of an automatic vehicle speed control system shown in an exemplary embodiment of the present application;

FIG. 4 is a schematic flow chart illustrating automatic vehicle speed control in rainy days based on the above system according to an exemplary embodiment of the present application;

FIG. 5 illustrates a schematic structural diagram of a computer system suitable for use in implementing the electronic device of an embodiment of the present application.

Detailed Description

Other advantages and effects of the present invention will become apparent to those skilled in the art from the disclosure herein, wherein the embodiments of the present invention are described in detail with reference to the accompanying drawings and preferred embodiments. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be understood that the preferred embodiments are illustrative of the invention only and are not limiting upon the scope of the invention.

It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the type, quantity and proportion of the components in actual implementation may be changed freely, and the layout of the components may be more complicated.

In the following description, numerous details are set forth to provide a more thorough explanation of embodiments of the present invention, however, it will be apparent to one skilled in the art that embodiments of the present invention may be practiced without these specific details, and in other embodiments, well-known structures and devices are shown in block diagram form, rather than in detail, in order to avoid obscuring embodiments of the present invention.

The terms "first," "second," and the like in the description and in the claims, and the above-described drawings of embodiments of the present disclosure, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the present disclosure described herein may be made. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.

The term "plurality" means two or more unless otherwise specified.

In the embodiment of the present disclosure, the character "/" indicates that the preceding and following objects are in an or relationship. For example, A/B represents: a or B.

The term "and/or" is an associative relationship that describes objects, meaning that three relationships may exist. For example, a and/or B, represents: a or B, or A and B.

It should be noted that the rainfall sensor, also called a rainfall sensor, can receive rainfall information and sense a rainfall signal. The rainfall sensor has many uses, and on the car, the rainfall sensor generally sets up in the automobile body outside, obtains the rainfall signal through receiving to will transmit for the controller, the controller gives corresponding instruction action, for example, based on rainfall sensor response rainwater and rainfall size, and then the switch of control car windscreen wiper and the action speed of brushing of windscreen wiper.

Fig. 1 is a schematic diagram of a car machine interface of an automobile according to an exemplary embodiment of the present application, where the car machine system includes a weather function, and the weather function may be activated in the following manner: firstly, a weather physical button on a vehicle machine can be directly clicked, and a weather mode can be entered; and secondly, entering a main menu of the car machine, selecting weather through a sliding function key, and entering a weather mode. And thirdly, starting a weather mode through a voice control function. And after the weather function is started, the weather forecast can be displayed on the vehicle-mounted machine interface. Since the position of the automobile is constantly changed in the process of traveling, the weather forecast should be dynamically refreshed, and the use experience of the user can be guaranteed. It should be understood that information other than weather forecast, such as a navigation map, a music player, etc., may also be displayed in the car-mounted device interface, and the embodiment of the present application does not limit the detailed information displayed on the car-mounted device interface, and may be set according to actual requirements.

In the driving process of a vehicle in a rainy day, although a driver can know the slippery road in the rainy day, accidents often occur, besides other factors, the accidents occur due to the fact that the safety consciousness of the driver is insufficient and the factors in the rainy day are neglected, and when the driver realizes that the accidents occur, although the emergency braking modes such as braking can be adopted, the emergency braking is only the last line of defense, and sometimes, the time is missed due to the judgment error, and even if the emergency braking is adopted, the accidents cannot be avoided in time.

The problems noted above have general applicability in general travel scenarios. It can be seen that in rainy days, the driver is not careful about driving in rainy days due to excessive confidence caused by psychological dependence on the existing automatic brake or no attention to adverse effects of rain and road slip on driving, and various traffic safety accidents can be caused. To solve these problems, embodiments of the present application respectively propose a rainy-day vehicle speed automatic control method, a rainy-day vehicle speed automatic control system, an electronic device, a computer-readable storage medium, and a computer program product, which will be described in detail below.

Referring to fig. 2, fig. 2 is a flowchart illustrating a method for automatically controlling a vehicle speed in a rainy day according to an exemplary embodiment of the present application.

As shown in fig. 2, the method for automatically controlling vehicle speed in rainy days according to the present embodiment includes the following steps:

step S201, obtaining environment information of vehicle running;

step S201, weather data and rainfall data are obtained according to environmental information;

and S203, if the current weather data is rainy, controlling the running speed of the vehicle according to the preset mapping relation between the rainfall data and different vehicle speed ranges.

In another exemplary embodiment, the obtaining weather data and rainfall data based on the environmental information includes sensing a quantity of water in a front windshield of the vehicle with a rainfall sensor to obtain the rainfall data.

In another exemplary embodiment, the rainfall data includes rainfall signal duration, rainfall magnitude, and rain stops.

In this embodiment, when the duration of the rainfall signal exceeds the preset time, it is determined as rainy day; and when the duration time of the rainfall signal does not exceed the preset time, judging the rainfall signal to be in a non-rainy day. Wherein, the preset time is preferably one minute. Non-rainy weather refers to a condition where the temporary contributing factor, similar to the rain sensor state during rain, is the temporary occurrence of water droplets on the front windshield, including but not limited to a sprinkler.

In this embodiment, when the rainfall is greater than the preset threshold, it is determined as a heavy rain state; and when the rainfall is smaller than a preset threshold value, judging the rainfall to be in a light rain state.

In another exemplary embodiment, the graded response process is performed according to the magnitude of rainfall, no operation is performed in a light rain state, a speed limit operation is performed in a heavy rain state, and the response is ended in a rain cut state.

In another exemplary embodiment, the hierarchical response process further comprises:

if the rainfall is monitored to be increased into heavy rain, limiting the speed; if the rainfall is not increased to be heavy rain, continuously monitoring the rainfall change, and judging whether the rain falls and the rainfall; and if the rain is stopped, ending the response.

In another exemplary embodiment, the automatic vehicle speed control method in rainy weather further includes: and if the current weather data is rainy, reminding the user.

In another exemplary embodiment, if the current weather data is rainy, the user is reminded according to preset rainfall data, and the reminding mode includes: when the rain is judged to be light rain according to the preset rainfall data, a signal is sent out through the vehicle machine to remind a user of paying attention to weather and driving safely; and/or when the vehicle is judged to be raining, the vehicle machine sends a signal to remind a user of limiting the speed of the vehicle.

When raining, the vehicle control system controls the vehicle speed, and simultaneously reminds a user to pay attention to rainy weather and limit speed if necessary, so that safe driving can be further ensured, and driving safety risk is reduced.

Referring to fig. 3, fig. 3 is a block diagram illustrating an automatic vehicle speed control system in a rainy day according to an exemplary embodiment of the present application.

As shown in fig. 3, the present embodiment provides an automatic vehicle speed control system in rainy days, which includes:

a vehicle driving environment information obtaining module 301, configured to obtain environment information about vehicle driving;

the data processing module 302 is configured to obtain weather data and rainfall data according to the environmental information;

and the vehicle control module 303 is configured to control the driving speed of the vehicle according to a preset mapping relationship between the rainfall data and different vehicle speed ranges if the current weather data is rainy.

In another exemplary embodiment, the vehicle driving environment information acquiring module includes a rainfall sensor for receiving the rainfall signal in real time.

In another exemplary embodiment, the vehicle control module is further configured to send a signal to the vehicle-mounted device to remind the user of weather conditions, to drive safely, and/or to remind the user of speed limit.

In another exemplary embodiment, the vehicle speed is automatically controlled to be turned on and off in rainy days through the vehicle machine.

Referring to fig. 4, fig. 4 is a schematic flow chart illustrating automatic control of vehicle speed in rainy days based on the above system according to an exemplary embodiment of the present application.

As shown in FIG. 4, the method for automatically controlling the vehicle speed in rainy days based on the system comprises the following steps:

step S401, obtaining environment information of vehicle driving, obtaining weather data and rainfall data according to the environment information, if the vehicle is rained, transmitting the rainfall signal to a data processing module after the rainfall sensor receives the rainfall signal, and processing the signal transmitted by the rainfall sensor and other environment information by the data processing module to obtain the weather data and the rainfall data.

Step S402, after the rainfall signal is transmitted to the data processing module, the data processing module records the duration time of the rainfall signal.

And S403, judging whether the system is started or not, if so, not performing additional response, and if not, performing the next judgment.

Step S404, interpretation is carried out according to the duration time of the rainfall signal, if the duration time of the rainfall signal does not exceed one minute, no additional response is carried out, and the system is ended; if the duration exceeds one minute, non-rainy conditions, such as a sprinkler, that may cause water droplets to appear on the windshield may be excluded and it may be determined as raining.

And step S405, if it is judged that the vehicle is rainy, responding to the condition, and reminding the user of safe driving.

Step S406, after the rainfall is reminded, the rainfall is determined, and if it is determined that the rainfall is heavy rain, step a is executed, and if the rainfall is not heavy rain (i.e., light rain), step B is executed.

Step A: and if the rainfall is judged to be heavy rain, the vehicle control module sends a signal to the vehicle machine to remind a user of limiting the speed of the vehicle and limit the speed of the vehicle. And after the speed limit is executed, monitoring the rainfall, and if the rainfall is continuously heavy rain, continuing to limit the speed and monitor. And if the rainfall is reduced and the heavy rain standard is not met, releasing the speed limit and executing the step B.

And B: and D, monitoring the rainfall, and if the rainfall is increased to be heavy rain, then executing the step A. And if the rainfall is not increased to be heavy rain, continuously judging whether the rain falls or not. And if the rainfall is judged to be still raining, continuously monitoring the rainfall. If the rain is stopped, the system is ended.

It should be noted that the automatic control system for a vehicle speed in rainy days provided by the foregoing embodiment and the automatic control method for a vehicle speed in rainy days provided by the foregoing embodiment belong to the same concept, and specific ways for the modules and units to perform operations have been described in detail in the method embodiment, and are not described again here. In practical applications, the automatic control system for vehicle speed in rainy days provided by the above embodiment may distribute the above functions by different functional modules according to needs, that is, divide the internal structure of the device into different functional modules to complete all or part of the above described functions, which is not limited herein.

An embodiment of the present application further provides an electronic device, including: one or more processors; a storage device for storing one or more programs, which when executed by the one or more processors, cause the electronic device to implement the automatic control method for vehicle speed in rainy days provided in the above embodiments.

FIG. 5 illustrates a schematic structural diagram of a computer system suitable for use in implementing the electronic device of an embodiment of the present application. It should be noted that the computer system 500 of the electronic device shown in fig. 5 is only an example, and should not bring any limitation to the functions and the scope of use of the embodiments of the present application.

As shown in fig. 5, the computer system 500 includes a Central Processing Unit (CPU)501, which can perform various appropriate actions and processes, such as executing the methods described in the above embodiments, according to a program stored in a Read-Only Memory (ROM) 502 or a program loaded from a storage section 508 into a Random Access Memory (RAM) 503. In the RAM 503, various programs and data necessary for system operation are also stored. The CPU 501, ROM 502, and RAM 503 are connected to each other via a bus 504. An Input/Output (I/O) interface 505 is also connected to bus 504.

The following components are connected to the I/O interface 505: an input portion 506 including a keyboard, a mouse, and the like; an output section 507 including a Cathode Ray Tube (CRT), a Liquid Crystal Display (LCD), and the like, a speaker, and the like; a storage portion 508 including a hard disk and the like; and a communication section 509 including a Network interface card such as a LAN (Local Area Network) card, a modem, or the like. The communication section 509 performs communication processing via a network such as the internet. The driver 510 is also connected to the I/O interface 505 as necessary. A removable medium 511 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like is mounted on the drive 510 as necessary, so that a computer program read out therefrom is mounted into the storage section 508 as necessary.

In particular, according to embodiments of the application, the processes described above with reference to the flow diagrams may be implemented as computer software programs. For example, embodiments of the present application include a computer program product comprising a computer program embodied on a computer readable medium, the computer program comprising a computer program for performing the method illustrated by the flow chart. In such an embodiment, the computer program may be downloaded and installed from a network through the communication section 509, and/or installed from the removable medium 511. The computer program executes various functions defined in the system of the present application when executed by a Central Processing Unit (CPU) 501.

It should be noted that the computer readable medium shown in the embodiments of the present application may be a computer readable signal medium or a computer readable storage medium or any combination of the two. The computer readable storage medium may be, for example, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples of the computer readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a Read-Only Memory (ROM), an Erasable Programmable Read-Only Memory (EPROM), a flash Memory, an optical fiber, a portable Compact Disc Read-Only Memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the present application, a computer-readable signal medium may comprise a propagated data signal with a computer-readable computer program embodied therein, either in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. The computer program embodied on the computer readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wired, etc., or any suitable combination of the foregoing.

The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present application. Each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams or flowchart illustration, and combinations of blocks in the block diagrams or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

The units described in the embodiments of the present application may be implemented by software, or may be implemented by hardware, and the described units may also be disposed in a processor. Wherein the names of the elements do not in some way constitute a limitation on the elements themselves.

Another aspect of the present application also provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor of a computer, causes the computer to execute the automatic vehicle speed control method in rainy days as described above. The computer-readable storage medium may be included in the electronic device described in the above embodiment, or may exist separately without being incorporated in the electronic device.

Another aspect of the application also provides a computer program product or computer program comprising computer instructions stored in a computer readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes the automatic control method for the vehicle speed in the rainy day provided in the above embodiments.

The foregoing embodiments are merely illustrative of the principles of the present invention and its efficacy, and are not to be construed as limiting the invention. Those skilled in the art can modify or change the above-described embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. A method for automatically controlling vehicle speed in rainy days is characterized by comprising the following steps:

acquiring environmental information of vehicle running;

2. The method of claim 1, wherein obtaining weather data and rainfall data based on the environmental information comprises sensing a quantity of water in a front windshield of the vehicle with a rainfall sensor to obtain the rainfall data.

3. The automatic vehicle speed control method in rainy days according to claim 1, wherein the rainfall data comprises rainfall signal duration, rainfall magnitude and rain cut, and when the rainfall signal duration exceeds a preset time, it is determined as rainy days; judging the rainfall signal to be in a non-rainy day when the duration time of the rainfall signal does not exceed the preset time;

4. A method according to claim 3, wherein the step response processing is performed according to the magnitude of the rainfall, and the step response processing is performed in a light rain state without performing the operation, in a heavy rain state with performing the speed limit operation, and in a rain stop state with finishing the response.

5. The method of automatically controlling vehicle speed in rainy days according to claim 4, wherein the hierarchical response process further comprises:

if the rainfall is monitored to increase to be heavy rain, limiting the speed; if the rainfall is not increased to be heavy rain, continuously monitoring the rainfall change, and judging whether the rain falls and the rainfall; if the rain is stopped, the response is finished.

6. The automatic control method for vehicle speed in rainy days according to claim 1, further comprising: and if the current weather data is rainy, reminding the user.

7. The automatic control method for the vehicle speed in the rainy day according to claim 6, wherein if the current weather data is the rainy day, the user is reminded according to preset rainfall data, and the reminding mode comprises the following steps: when the rain is judged to be light rain according to the preset rainfall data, a signal is sent out through the vehicle machine to remind a user of paying attention to weather and driving safely; and/or when the vehicle is judged to be raining, the vehicle machine sends a signal to remind a user of limiting the speed of the vehicle.

8. An automatic vehicle speed control system in rainy weather, the system comprising:

the vehicle running environment information acquisition module is used for acquiring the running environment information of the vehicle;

9. The system of claim 8, wherein the vehicle driving environment information acquisition module comprises a rainfall sensor, and the rainfall sensor is configured to receive a rainfall signal in real time.

10. The automatic vehicle speed control system in rainy days according to claim 8, wherein the vehicle control module is further used for sending signals to the vehicle-mounted machine to remind users of paying attention to weather conditions, driving safely, and/or reminding users of limiting speed.

11. An electronic device, characterized in that the electronic device comprises:

one or more processors;

storage means for storing one or more programs that, when executed by the one or more processors, cause the electronic device to implement the automatic vehicle speed control method in rainy days according to any one of claims 1 to 7.

12. A computer-readable storage medium, characterized in that a computer program is stored thereon, which, when executed by a processor of a computer, causes the computer to execute the automatic vehicle speed control method in rainy days according to any one of claims 1 to 7.