Current vehicle speed control method and apparatus for vehicle

Abstract

A current vehicle speed control method and apparatus for a vehicle, relating to the technical field of steer-by-wire systems. The method comprises: if it is detected that a fault occurs in a steer-by-wire system, acquiring a fault type of the fault; generating a fault alarm signal corresponding to the fault type on the basis of the fault type, and determining a target vehicle speed signal on the basis of the fault alarm signal; sending the fault alarm signal, the target vehicle speed signal and an adaptive cruise control request signal to an intelligent driving system and a power system; and acquiring the current vehicle speed of the vehicle, by means of the intelligent driving system and the power system, controlling the current vehicle speed on the basis of the target vehicle speed signal to obtain a target vehicle speed, and outputting the target vehicle speed to a controller. The present technical solution can safely reduce the vehicle speed, and can solve problems such as vehicle collision during the speed reduction process.

Description

Vehicle current speed control method and device

[0001] This application claims priority to Chinese Patent Application No. 202411935770.5, filed on December 26, 2024, entitled “Method and Apparatus for Current Vehicle Speed ​​Control”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure relates to the field of steer-by-wire systems, and more particularly to a method and apparatus for controlling the current speed of a vehicle. Background Technology

[0003] Currently, when a fault occurs in the online steering system that affects the system's integrity and safety, the vehicle's speed needs to be further controlled to avoid vehicle collisions.

[0004] Therefore, there is an urgent need for a method to control the current speed of a vehicle, which can safely reduce the vehicle speed and avoid problems such as collisions during the deceleration process. Summary of the Invention

[0005] The purpose of this application is to provide a method and device for controlling the current speed of a vehicle.

[0006] In a first aspect, this application discloses a method for controlling the current vehicle speed, applied to a steer-by-wire system, the method comprising:

[0007] If a malfunction is detected in the steer-by-wire system, the malfunction type is obtained.

[0008] A fault alarm signal corresponding to the fault type is generated according to the fault type, and a target vehicle speed signal is determined according to the fault alarm signal;

[0009] The fault alarm signal, the target vehicle speed signal, and the adaptive cruise control request signal are sent to the intelligent driving system and the powertrain system; wherein, the fault alarm signal and the adaptive cruise control request signal are used to establish the connection between the steer-by-wire system and the intelligent driving system; the fault alarm signal and the adaptive cruise control request signal are used to establish the connection between the steer-by-wire system and the powertrain system;

[0010] The system obtains the vehicle's current speed, and based on the intelligent driving system and the power system, controls the current speed according to the target speed signal to obtain the target speed, and outputs the target speed to the controller.

[0011] In one example, the step of controlling the current vehicle speed based on the target vehicle speed signal, according to the intelligent driving system and the power system, to obtain the target vehicle speed, includes:

[0012] Based on the intelligent driving system, the adaptive cruise speed is determined according to the target vehicle speed signal;

[0013] Based on the intelligent driving system, the current vehicle speed is controlled according to the adaptive cruise speed, the current vehicle speed, and the current road condition information to obtain a first control speed;

[0014] Based on the power system, the accelerator pedal status signal is acquired;

[0015] Based on the power system, the current vehicle speed is controlled according to the current vehicle speed, the accelerator pedal status signal and the adaptive cruise speed to obtain a second control vehicle speed;

[0016] The target vehicle speed is determined based on the first controlled vehicle speed and the second controlled vehicle speed.

[0017] In one example, determining the adaptive cruise speed based on the target vehicle speed signal includes:

[0018] Based on the intelligent driving system, if the intelligent driving system has not activated the adaptive cruise function, then the adaptive cruise function is activated, and the target vehicle speed signal is determined as the adaptive cruise speed;

[0019] Based on the intelligent driving system, if the intelligent driving system has activated the adaptive cruise function, the current cruise speed of the vehicle is obtained, and the adaptive cruise speed is determined based on the current cruise speed and the target vehicle speed signal.

[0020] In one example, the step of controlling the current vehicle speed based on the intelligent driving system, according to the adaptive cruise speed, the current vehicle speed, and current road condition information, to obtain a first control speed includes:

[0021] Based on the intelligent driving system, if the current vehicle speed is less than or equal to the adaptive cruise speed, the current vehicle speed is determined as the first control vehicle speed;

[0022] Based on the intelligent driving system, if the current vehicle speed is greater than the adaptive cruise speed and the current road condition information indicates the presence of other vehicles, then the adaptive cruise speed is determined as the first control speed, and the vehicle is controlled to maintain a preset distance from the other vehicles.

[0023] Based on the intelligent driving system, if the current vehicle speed is greater than the adaptive cruise speed and the current road condition information indicates that there are no other vehicles, then the adaptive cruise speed is determined as the first controlled vehicle speed.

[0024] In one example, the step of controlling the current vehicle speed based on the powertrain system, according to the current vehicle speed, the accelerator pedal state signal, and the adaptive cruise speed, to obtain a second control vehicle speed includes:

[0025] Based on the power system, if the current vehicle speed is less than the adaptive cruise speed, the acceleration corresponding to the accelerator pedal state signal is obtained;

[0026] Based on the power system, the current vehicle speed is accelerated according to the acceleration to obtain the second control vehicle speed; wherein, the second control vehicle speed is not greater than the adaptive cruise speed;

[0027] Based on the power system, if the current vehicle speed is greater than or equal to the adaptive cruise speed, the accelerator pedal status signal is not processed, and the current vehicle speed is decelerated, with the adaptive cruise speed determined as the second control speed.

[0028] In one example, after sending the fault alarm signal, the target vehicle speed signal, and the adaptive cruise control request signal to the intelligent driving system and the powertrain system, the method includes:

[0029] Based on the intelligent driving system and the power system, the fault alarm signal, the target vehicle speed signal and the adaptive cruise control request signal are verified to obtain a first verification result.

[0030] In one example, after generating a fault alarm signal corresponding to the fault type based on the fault type, the method further includes:

[0031] The fault alarm signal is sent to the vehicle system, and the fault alarm signal is verified based on the vehicle system to obtain a second verification result.

[0032] If the second verification result is passed, an alarm signal is sent to the instrument panel or central control screen of the vehicle system.

[0033] Secondly, this application discloses a current vehicle speed control device for use in a steer-by-wire system, the device comprising:

[0034] The acquisition module is used to acquire the fault type if a fault is detected in the steer-by-wire system.

[0035] The first determining module is used to generate a fault alarm signal corresponding to the fault type according to the fault type, and to determine the target vehicle speed signal according to the fault alarm signal;

[0036] The first transmitting module is used to transmit the fault alarm signal, the target vehicle speed signal, and the adaptive cruise control request signal to the intelligent driving system and the power system; wherein, the fault alarm signal and the adaptive cruise control request signal are used to establish a connection between the steer-by-wire system and the intelligent driving system; the fault alarm signal and the adaptive cruise control request signal are used to establish a connection between the steer-by-wire system and the power system;

[0037] The second determining module is used to obtain the current vehicle speed, control the current vehicle speed based on the intelligent driving system and the power system according to the target vehicle speed signal to obtain the target vehicle speed, and output the target vehicle speed to the controller.

[0038] Thirdly, this application discloses an electronic device comprising: a processor and a memory, wherein the memory stores a computer program, and when the computer program is executed by the processor, the processor performs the method described in the first aspect.

[0039] Fourthly, this application discloses a computer-readable storage medium storing a computer program that, when executed by a processor, can implement the method described in the first aspect.

[0040] Based on the above technical solutions, this disclosure provides a method and apparatus for controlling the current vehicle speed, applied to a steer-by-wire system. The method includes: if a fault is detected in the steer-by-wire system, obtaining the fault type; generating a fault alarm signal corresponding to the fault type, and determining a target vehicle speed signal based on the fault alarm signal; sending the fault alarm signal, the target vehicle speed signal, and an adaptive cruise control request signal to an intelligent driving system and a powertrain system; wherein the fault alarm signal and the adaptive cruise control request signal are used to establish a connection between the steer-by-wire system and the intelligent driving system; the fault alarm signal and the adaptive cruise control request signal are used to establish a connection between the steer-by-wire system and the powertrain system; obtaining the current vehicle speed; controlling the current vehicle speed based on the target vehicle speed signal according to the intelligent driving system and the powertrain system to obtain the target vehicle speed; and outputting the target vehicle speed to a controller. Using this technical solution, the vehicle speed can be safely reduced, and collisions during the deceleration process can be avoided. Attached Figure Description

[0041] Figure 1 is a schematic flowchart of a vehicle current speed control method provided in an embodiment of this application;

[0042] Figure 2 is a flowchart illustrating a method for controlling the current vehicle speed according to an embodiment of this application;

[0043] Figure 3 is a schematic diagram of the structure of a vehicle current speed control device provided in an embodiment of this application;

[0044] Figure 4 is a schematic diagram of the structure of an electronic device according to an embodiment of this application. Detailed Implementation

[0045] To better understand the above-mentioned objectives, features, and advantages of this disclosure, the solutions disclosed herein will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0046] Numerous specific details are set forth in the following description in order to provide a full understanding of this disclosure, but this disclosure may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some, and not all, of the embodiments of this disclosure.

[0047] Figure 1 is a flowchart illustrating a method for controlling the current vehicle speed according to an embodiment of this disclosure, applied to a steer-by-wire system. This method can be executed by an electronic device. This electronic device can be executively understood as a device such as a mobile phone, tablet computer, laptop computer, desktop computer, or smart TV. As shown in Figure 1, the method provided in this embodiment includes the following steps:

[0048] S101. If a fault is detected in the steer-by-wire system, obtain the fault type.

[0049] In one example, a malfunction in the steer-by-wire system can be an internal fault, such as a failure in the steering feel simulation unit or the steering actuator unit. It can also be a fault caused by external environmental factors, such as communication failures, voltage failures, or temperature failures.

[0050] In this embodiment, the fault type can be classified according to different levels, for example, into high-level faults, medium-level faults, and low-level faults. The severity of the faults is ranked as follows: high-level fault > medium-level fault > low-level fault.

[0051] S102. Generate a fault alarm signal corresponding to the fault type based on the fault type, and determine the target vehicle speed signal based on the fault alarm signal.

[0052] In one example, different fault types correspond to different fault alarm signals. The fault alarm signals can be 1, 2, and 3. Specifically, a high-level fault corresponds to fault alarm signal 1, a medium-level fault to fault alarm signal 2, and a low-level fault to fault alarm signal 3. The target vehicle speed signals corresponding to different fault types are also different; that is, different fault alarm signals correspond to different target vehicle speed signals. For example, fault alarm signal 1 corresponds to a target vehicle speed of 20 km / h, fault alarm signal 2 corresponds to a target vehicle speed of 30 km / h, and fault alarm signal 3 corresponds to a target vehicle speed of 40 km / h.

[0053] S103, send the fault alarm signal, target vehicle speed signal and adaptive cruise control request signal to the intelligent driving system and the power system; wherein, the fault alarm signal and adaptive cruise control request signal are used to establish the connection between the steer-by-wire system and the intelligent driving system; the fault alarm signal and adaptive cruise control request signal are used to establish the connection between the steer-by-wire system and the power system.

[0054] In one example, after sending the fault alarm signal, target vehicle speed signal, and adaptive cruise control request signal to the intelligent driving system and powertrain system, the method includes:

[0055] Based on the intelligent driving system and the power system, the fault alarm signal, target vehicle speed signal and adaptive cruise control request signal are verified to obtain the first verification result.

[0056] In one example, the fault alarm signal, target speed signal, and adaptive cruise control request signal all have confidence levels, with the fault alarm signal corresponding to confidence level A, the target speed signal to confidence level B, and the adaptive cruise control request signal to confidence level C. After receiving these signals, the intelligent driving system needs to verify the confidence levels A, B, and C of the fault alarm signal and the adaptive cruise control request signal to obtain the first verification result. This setup ensures that the fault alarm signal, target speed signal, and adaptive cruise control request signal are genuine, thereby improving the accuracy of subsequent operations.

[0057] In one example, after receiving a fault alarm signal and an adaptive cruise control request signal, the intelligent driving system establishes a connection between the steer-by-wire system and the intelligent driving system through these signals. The advantage of this setup is that it allows the intelligent driving system to control the steer-by-wire system.

[0058] In one example, after receiving a fault alarm signal and an adaptive cruise control request signal, the powertrain establishes a connection between the steer-by-wire system and the powertrain system using these signals. The advantage of this setup is that it allows the powertrain to control the steer-by-wire system.

[0059] S104. Obtain the current vehicle speed, and based on the intelligent driving system and power system, control the current vehicle speed according to the target vehicle speed signal to obtain the target vehicle speed, and output the target vehicle speed to the controller.

[0060] In one example, the intelligent driving system and the powertrain system work together to control the current vehicle speed. Specifically, the current vehicle speed can be controlled by a target speed signal to obtain the target speed, which is then output to the controller. The target speed is the speed at which safe driving can be ensured.

[0061] This disclosure provides a method for controlling the current vehicle speed, applied to a steer-by-wire system. The method includes: if a fault is detected in the steer-by-wire system, obtaining the fault type; generating a fault alarm signal corresponding to the fault type, and determining a target vehicle speed signal based on the fault alarm signal; sending the fault alarm signal, the target vehicle speed signal, and an adaptive cruise control request signal to an intelligent driving system and a powertrain system; wherein the fault alarm signal and the adaptive cruise control request signal are used to establish a connection between the steer-by-wire system and the intelligent driving system; obtaining the vehicle's current speed; controlling the current speed based on the target vehicle speed signal using the intelligent driving system and the powertrain system to obtain the target vehicle speed; and outputting the target vehicle speed to a controller. This technical solution can safely reduce the vehicle speed and avoid collisions during the deceleration process.

[0062] Figure 2 is a schematic flowchart of a vehicle current speed control method provided in an embodiment of this disclosure. Applied to a steer-by-wire system, this embodiment of the disclosure optimizes the above embodiments and can be combined with various optional solutions in one or more of the above embodiments.

[0063] As shown in Figure 2, the current vehicle speed control method may include the following steps:

[0064] S201. If a fault is detected in the steer-by-wire system, obtain the fault type.

[0065] In one example, this step can be found in step S101.

[0066] S202. Generate a fault alarm signal corresponding to the fault type according to the fault type, and determine the target vehicle speed signal according to the fault alarm signal.

[0067] In one example, after generating a fault alarm signal corresponding to the fault type based on the fault type, the method further includes:

[0068] The fault alarm signal is sent to the vehicle system, and the fault alarm signal is verified by the vehicle system to obtain a second verification result.

[0069] If the second verification result is passed, an alarm signal will be sent to the instrument panel or central control screen of the vehicle system.

[0070] In one example, after receiving a fault alarm signal, the vehicle's infotainment system verifies the signal. Specifically, this verification might involve checking the confidence level of the alarm signal to obtain a second verification result. If the second verification result passes, an alarm signal is sent to the instrument cluster or central control screen of the vehicle's infotainment system. This alarm signal can manifest as illuminating a fault indicator light, providing a text alert, or issuing a voice alert.

[0071] S203, send the fault alarm signal, target vehicle speed signal and adaptive cruise control request signal to the intelligent driving system and the power system; wherein, the fault alarm signal and adaptive cruise control request signal are used to establish the connection between the steer-by-wire system and the intelligent driving system; the fault alarm signal and adaptive cruise control request signal are used to establish the connection between the steer-by-wire system and the power system.

[0072] In one example, this step can be found in step S103.

[0073] S204. Obtain the vehicle's current speed.

[0074] S205, based on the intelligent driving system, determines the adaptive cruise speed according to the target vehicle speed signal.

[0075] In one example, determining the adaptive cruise speed based on the target vehicle speed signal includes:

[0076] Based on the intelligent driving system, if the intelligent driving system has not activated the adaptive cruise function, then the adaptive cruise function will be activated and the target vehicle speed signal will be determined as the adaptive cruise speed.

[0077] Based on the intelligent driving system, if the intelligent driving system has activated the adaptive cruise function, it obtains the vehicle's current cruise speed and determines the adaptive cruise speed based on the current cruise speed and the target vehicle speed signal.

[0078] In one example, if the intelligent driving system has not activated the adaptive cruise control function, then the adaptive cruise control function will be activated, and the target vehicle speed signal will be determined as the adaptive cruise speed. For example, if the target vehicle speed signal is 30 km / h, then the adaptive cruise speed will be 30 km / h.

[0079] In one example, if the intelligent driving system has activated adaptive cruise control, it means the vehicle has a cruise speed, so the current cruise speed is obtained. Then, the current cruise speed is compared with the target speed signal. If the current cruise speed is greater than the indicated speed in the target speed signal, the indicated speed in the target speed signal is determined as the adaptive cruise speed. If the current cruise speed is less than or equal to the indicated speed in the target speed signal, the current cruise speed is determined as the adaptive cruise speed.

[0080] S206, based on the intelligent driving system, controls the current vehicle speed according to the adaptive cruise speed, current vehicle speed and current road condition information to obtain the first control speed.

[0081] In one example, based on the intelligent driving system, the current vehicle speed is controlled according to the adaptive cruise speed, current vehicle speed, and current road condition information to obtain a first control speed, including:

[0082] Based on the intelligent driving system, if the current vehicle speed is less than or equal to the adaptive cruise speed, the current vehicle speed will be determined as the first control speed.

[0083] Based on the intelligent driving system, if the current vehicle speed is greater than the adaptive cruise speed and the current road condition information indicates the presence of other vehicles, the adaptive cruise speed will be set as the first control speed, and the vehicle will be controlled to maintain a preset distance from other vehicles.

[0084] Based on the intelligent driving system, if the current vehicle speed is greater than the adaptive cruise speed and the current road conditions indicate that there are no other vehicles, the adaptive cruise speed will be set as the first control speed.

[0085] In one example, if the current vehicle speed is greater than the adaptive cruise control speed and the current road condition information indicates the presence of other vehicles, the current vehicle speed needs to be reduced to the adaptive cruise control speed, which is then set as the first control speed. During this process, since the current road condition information indicates the presence of other vehicles, the vehicle can decelerate at a lower rate while maintaining a preset distance from other vehicles.

[0086] In one example, if the current vehicle speed is greater than the adaptive cruise speed and the current road conditions indicate that there are no other vehicles, the adaptive cruise speed is set as the first control speed. This process can involve deceleration at a relatively high rate.

[0087] S207. Based on the power system, obtain the accelerator pedal status signal.

[0088] In one example, the accelerator pedal status signal is used to indicate whether the user is accelerating. When the user accelerates, the accelerator pedal status signal is 1. When the user is not accelerating, the accelerator pedal status signal is 0.

[0089] S208, based on the powertrain system, controls the current vehicle speed according to the current vehicle speed, accelerator pedal status signal and adaptive cruise speed to obtain the second control speed.

[0090] In one example, based on the powertrain, the current vehicle speed is controlled according to the current vehicle speed, accelerator pedal status signal, and adaptive cruise speed to obtain a second controlled vehicle speed, including:

[0091] Based on the powertrain system, if the current vehicle speed is less than the adaptive cruise speed, the acceleration corresponding to the accelerator pedal status signal is obtained.

[0092] Based on the power system, the current vehicle speed is accelerated by acceleration to obtain a second control speed; wherein, the second control speed is not greater than the adaptive cruise speed.

[0093] In one example, if the current vehicle speed is less than the adaptive cruise speed, the vehicle can accelerate according to the acceleration corresponding to the obtained accelerator pedal status signal to obtain the second control speed.

[0094] Based on the power system, if the current vehicle speed is greater than or equal to the adaptive cruise speed, the accelerator pedal status signal is not processed, and the current vehicle speed is decelerated, with the adaptive cruise speed determined as the second control speed.

[0095] In one example, if the current vehicle speed is greater than or equal to the adaptive cruise speed, the powertrain will no longer respond, even if the acceleration corresponding to the accelerator pedal status signal is continuously detected.

[0096] S209. Determine the target speed based on the first control speed and the second control speed.

[0097] In one example, the first control speed and the second control speed are compared, and the smaller value is determined as the target speed.

[0098] S210, output the target vehicle speed to the controller.

[0099] In one example, the controller directs the vehicle to travel at a target speed.

[0100] This disclosure provides a method for controlling the current vehicle speed, applied to a steer-by-wire system. The method includes: acquiring an accelerator pedal state signal based on the powertrain system; controlling the current vehicle speed based on the powertrain system, the current vehicle speed, the accelerator pedal state signal, and the adaptive cruise speed to obtain a second control speed; determining a target vehicle speed based on the first and second control speeds; and outputting the target speed to the controller. Using this technical solution, when the steer-by-wire system malfunctions, it will request intervention from relevant vehicle systems to assist in safely reducing the vehicle speed to a set safe speed, ensuring the vehicle enters a safe operating state.

[0101] Figure 3 is a schematic diagram of a vehicle current speed control device provided in an embodiment of this disclosure, applied to a steer-by-wire system. This vehicle current speed control device can be understood as the aforementioned electronic device or a functional module within the aforementioned electronic device. As shown in Figure 3, the vehicle current speed control device 30 includes:

[0102] The acquisition module 301 is used to acquire the fault type if a fault is detected in the steer-by-wire system.

[0103] The first determining module 302 is used to generate a fault alarm signal corresponding to the fault type according to the fault type, and to determine the target vehicle speed signal according to the fault alarm signal.

[0104] The first transmitting module 303 is used to send a fault alarm signal, a target vehicle speed signal, and an adaptive cruise control request signal to the intelligent driving system and the power system; wherein, the fault alarm signal and the adaptive cruise control request signal are used to establish a connection between the steer-by-wire system and the intelligent driving system; the fault alarm signal and the adaptive cruise control request signal are used to establish a connection between the steer-by-wire system and the power system.

[0105] The second determining module 304 is used to obtain the current vehicle speed, control the current vehicle speed based on the intelligent driving system and power system according to the target vehicle speed signal to obtain the target vehicle speed, and output the target vehicle speed to the controller.

[0106] In one example, the second determining module 304 includes:

[0107] The first determination submodule is used to determine the adaptive cruise speed based on the target vehicle speed signal according to the intelligent driving system.

[0108] The first control submodule is used to control the current vehicle speed based on the intelligent driving system, the adaptive cruise speed, the current vehicle speed, and the current road condition information, to obtain the first control vehicle speed.

[0109] The acquisition submodule is used to acquire the accelerator pedal status signal based on the power system.

[0110] The second control submodule is used to control the current vehicle speed based on the power system, the current vehicle speed, the accelerator pedal status signal, and the adaptive cruise speed, to obtain the second control vehicle speed.

[0111] The second determining submodule is used to determine the target vehicle speed based on the first control vehicle speed and the second control vehicle speed.

[0112] In one example, the first determined submodule is specifically used for:

[0113] Based on the intelligent driving system, if the intelligent driving system has not activated the adaptive cruise control function, then the adaptive cruise control function will be activated, and the target vehicle speed signal will be determined as the adaptive cruise speed.

[0114] Based on the intelligent driving system, if the intelligent driving system has activated the adaptive cruise function, it obtains the vehicle's current cruise speed and determines the adaptive cruise speed based on the current cruise speed and the target vehicle speed signal.

[0115] In one example, the first control submodule is specifically used for:

[0116] Based on the intelligent driving system, if the current vehicle speed is less than or equal to the adaptive cruise speed, the current vehicle speed will be determined as the first control speed.

[0117] Based on the intelligent driving system, if the current vehicle speed is greater than the adaptive cruise speed and the current road condition information indicates the presence of other vehicles, the adaptive cruise speed will be set as the first control speed, and the vehicle will be controlled to maintain a preset distance from other vehicles.

[0118] Based on the intelligent driving system, if the current vehicle speed is greater than the adaptive cruise speed and the current road conditions indicate that there are no other vehicles, the adaptive cruise speed will be set as the first control speed.

[0119] In one example, the second control submodule is specifically used for:

[0120] Based on the powertrain system, if the current vehicle speed is less than the adaptive cruise speed, the acceleration corresponding to the accelerator pedal status signal is obtained.

[0121] Based on the power system, the current vehicle speed is accelerated by acceleration to obtain a second control speed; wherein, the second control speed is not greater than the adaptive cruise speed.

[0122] Based on the power system, if the current vehicle speed is greater than or equal to the adaptive cruise speed, the accelerator pedal status signal is not processed, and the current vehicle speed is decelerated, with the adaptive cruise speed determined as the second control speed.

[0123] In one example, device 30 includes:

[0124] The first verification module 305 is used to verify the fault alarm signal, target vehicle speed signal and adaptive cruise control request signal based on the intelligent driving system and power system, and obtain the first verification result.

[0125] In one example, device 30 also includes:

[0126] The second verification module 306 is used to send the fault alarm signal to the vehicle system, verify the fault alarm signal based on the vehicle system, and obtain the second verification result.

[0127] The second sending module 307 is used to send an alarm signal on the instrument panel or central control screen of the vehicle system if the second verification result is passed.

[0128] The apparatus provided in this embodiment can execute the methods of any of the above embodiments, and its execution method and beneficial effects are similar, so they will not be described again here.

[0129] This disclosure also provides an electronic device, which includes: a memory storing a computer program; and a processor for executing the computer program, wherein when the computer program is executed by the processor, it can implement the methods of any of the above embodiments.

[0130] For example, Figure 4 is a schematic diagram of the structure of an electronic device according to an embodiment of this disclosure. Referring specifically to Figure 4 below, it shows a schematic diagram of the structure suitable for implementing the electronic device 1000 in the embodiments of this disclosure. The electronic device 1000 in the embodiments of this disclosure may include, but is not limited to, mobile terminals such as mobile phones, laptops, digital broadcast receivers, PDAs (personal digital assistants), PADs (tablet computers), PMPs (portable multimedia players), in-vehicle terminals (e.g., in-vehicle navigation terminals), and fixed terminals such as digital TVs and desktop computers. The electronic device shown in Figure 4 is merely an example and should not impose any limitations on the functionality and scope of use of the embodiments of this disclosure.

[0131] As shown in Figure 4, the electronic device 1000 may include a processing unit (e.g., a central processing unit, a graphics processing unit, etc.) 1001, which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 1002 or a program loaded from a storage device 1008 into a random access memory (RAM) 1003. The RAM 1003 also stores various programs and data required for the operation of the electronic device 1000. The processing unit 1001, ROM 1002, and RAM 1003 are interconnected via a bus 1004. An input / output (I / O) interface 1005 is also connected to the bus 1004.

[0132] Typically, the following devices can be connected to the I / O interface 1005: input devices 1006 including, for example, a touchscreen, touchpad, keyboard, mouse, camera, microphone, accelerometer, gyroscope, etc.; output devices 1007 including, for example, a liquid crystal display (LCD), speaker, vibrator, etc.; storage devices 1008 including, for example, magnetic tape, hard disk, etc.; and communication devices 1009. Communication device 1009 allows electronic device 1000 to communicate wirelessly or wiredly with other devices to exchange data. Although Figure 4 shows an electronic device 1000 with various devices, it should be understood that it is not required to implement or possess all of the devices shown. More or fewer devices may be implemented or possessed alternatively.

[0133] In particular, according to embodiments of this disclosure, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments of this disclosure include a computer program product comprising a computer program carried on a non-transitory computer-readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via communication device 1009, or installed from storage device 1008, or installed from ROM 1002. When the computer program is executed by processing device 1001, it performs the functions defined in the methods of embodiments of this disclosure.

[0134] It should be noted that the computer-readable medium described in this disclosure can be a computer-readable signal medium or a computer-readable storage medium, or any combination thereof. A computer-readable storage medium can be, for example,—but not limited to—an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of a computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof. In this disclosure, a computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in connection with an instruction execution system, apparatus, or device. In this disclosure, a computer-readable signal medium can include a data signal propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such propagated data signals can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A computer-readable signal medium can be any computer-readable medium other than a computer-readable storage medium, which can send, propagate, or transmit a program for use by or in connection with an instruction execution system, apparatus, or device. The program code contained on the computer-readable medium can be transmitted using any suitable medium, including but not limited to: wires, optical fibers, RF (radio frequency), etc., or any suitable combination thereof.

[0135] In some implementations, clients and servers can communicate using any currently known or future-developed network protocol such as HTTP (Hypertext Transfer Protocol), and can interconnect with digital data communication (e.g., communication networks) of any form or medium. Examples of communication networks include local area networks (“LANs”), wide area networks (“WANs”), the Internet (e.g., the Internet of Things), and end-to-end networks (e.g., ad hoc end-to-end networks), as well as any currently known or future-developed networks.

[0136] The aforementioned computer-readable medium may be included in the aforementioned electronic device; or it may exist independently and not assembled into the electronic device.

[0137] The aforementioned computer-readable medium carries one or more programs that, when executed by the electronic device, cause the electronic device to: if a fault is detected in the steer-by-wire system, obtain the fault type; generate a fault alarm signal corresponding to the fault type, and determine a target vehicle speed signal based on the fault alarm signal; send the fault alarm signal, the target vehicle speed signal, and the adaptive cruise control request signal to the intelligent driving system and the powertrain system; obtain the current vehicle speed, and based on the intelligent driving system and the powertrain system, control the current vehicle speed according to the target vehicle speed signal to obtain the target vehicle speed, and output the target vehicle speed to the controller.

[0138] Computer program code for performing the operations of this disclosure can be written in one or more programming languages ​​or a combination thereof, including but not limited to object-oriented programming languages ​​such as Java, Smalltalk, and C++, as well as conventional procedural programming languages ​​such as the "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0139] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this disclosure. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0140] The units described in the embodiments of this disclosure can be implemented in software or hardware. The names of the units are not, in some cases, intended to limit the specific unit.

[0141] The functions described above in this document can be performed, at least in part, by one or more hardware logic components. For example, exemplary types of hardware logic components that can be used, without limitation, include: Field Programmable Gate Arrays (FPGAs), Application-Specific Integrated Circuits (ASICs), Application Standard Products (ASSPs), System-on-Chip (SoCs), Complex Programmable Logic Devices (CPLDs), and so on.

[0142] In the context of this disclosure, a machine-readable medium can be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, apparatus, or device. A machine-readable medium can be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium can be, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0143] This disclosure also provides a computer-readable storage medium storing a computer program. When the computer program is executed by a processor, it can implement the methods of any of the above embodiments. The execution method and beneficial effects are similar, and will not be described again here.

[0144] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0145] The above are merely specific embodiments of this disclosure, enabling those skilled in the art to understand or implement this disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this disclosure. Therefore, this disclosure is not to be limited to these embodiments, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for controlling the current speed of a vehicle, characterized in that, Applied to a steer-by-wire system, the method includes: If a malfunction is detected in the steer-by-wire system, the malfunction type is obtained. A fault alarm signal corresponding to the fault type is generated according to the fault type, and a target vehicle speed signal is determined according to the fault alarm signal; The fault alarm signal, the target vehicle speed signal, and the adaptive cruise control request signal are sent to the intelligent driving system and the powertrain system; wherein, the fault alarm signal and the adaptive cruise control request signal are used to establish the connection between the steer-by-wire system and the intelligent driving system; the fault alarm signal and the adaptive cruise control request signal are used to establish the connection between the steer-by-wire system and the powertrain system; The system obtains the vehicle's current speed, and based on the intelligent driving system and the power system, controls the current speed according to the target speed signal to obtain the target speed, and outputs the target speed to the controller.

2. The method according to claim 1, characterized in that, The method of controlling the current vehicle speed based on the target vehicle speed signal, according to the intelligent driving system and the power system, to obtain the target vehicle speed, includes: Based on the intelligent driving system, the adaptive cruise speed is determined according to the target vehicle speed signal; Based on the intelligent driving system, the current vehicle speed is controlled according to the adaptive cruise speed, the current vehicle speed, and the current road condition information to obtain a first control speed; Based on the power system, the accelerator pedal status signal is acquired; Based on the power system, the current vehicle speed is controlled according to the current vehicle speed, the accelerator pedal status signal and the adaptive cruise speed to obtain a second control vehicle speed; The target vehicle speed is determined based on the first controlled vehicle speed and the second controlled vehicle speed.

3. The method according to claim 2, characterized in that, Determining the adaptive cruise speed based on the target vehicle speed signal includes: Based on the intelligent driving system, if the intelligent driving system has not activated the adaptive cruise function, then the adaptive cruise function is activated, and the target vehicle speed signal is determined as the adaptive cruise speed; Based on the intelligent driving system, if the intelligent driving system has activated the adaptive cruise function, the current cruise speed of the vehicle is obtained, and the adaptive cruise speed is determined based on the current cruise speed and the target vehicle speed signal.

4. The method according to claim 2, characterized in that, The method of controlling the current vehicle speed based on the intelligent driving system, according to the adaptive cruise speed, the current vehicle speed, and the current road condition information, to obtain a first control speed includes: Based on the intelligent driving system, if the current vehicle speed is less than or equal to the adaptive cruise speed, the current vehicle speed is determined as the first control vehicle speed; Based on the intelligent driving system, if the current vehicle speed is greater than the adaptive cruise speed and the current road condition information indicates the presence of other vehicles, then the adaptive cruise speed is determined as the first control speed, and the vehicle is controlled to maintain a preset distance from the other vehicles. Based on the intelligent driving system, if the current vehicle speed is greater than the adaptive cruise speed and the current road condition information indicates that there are no other vehicles, then the adaptive cruise speed is determined as the first controlled vehicle speed.

5. The method according to claim 2, characterized in that, The method of controlling the current vehicle speed based on the powertrain system, according to the current vehicle speed, the accelerator pedal status signal, and the adaptive cruise speed, to obtain a second control speed includes: Based on the power system, if the current vehicle speed is less than the adaptive cruise speed, the acceleration corresponding to the accelerator pedal state signal is obtained; Based on the power system, the current vehicle speed is accelerated according to the acceleration to obtain the second control vehicle speed; wherein, the second control vehicle speed is not greater than the adaptive cruise speed; Based on the power system, if the current vehicle speed is greater than or equal to the adaptive cruise speed, the accelerator pedal status signal is not processed, and the current vehicle speed is decelerated, with the adaptive cruise speed determined as the second control speed.

6. The method according to claim 1, characterized in that, After sending the fault alarm signal, the target vehicle speed signal, and the adaptive cruise control request signal to the intelligent driving system and the powertrain system, the method includes: Based on the intelligent driving system and the power system, the fault alarm signal, the target vehicle speed signal and the adaptive cruise control request signal are verified to obtain a first verification result.

7. The method according to claim 1, characterized in that, After generating a fault alarm signal corresponding to the fault type based on the fault type, the method further includes: The fault alarm signal is sent to the vehicle system, and the fault alarm signal is verified based on the vehicle system to obtain a second verification result. If the second verification result is passed, an alarm signal is sent to the instrument panel or central control screen of the vehicle system.

8. A vehicle current speed control device, characterized in that, The device, used in a steer-by-wire system, includes: The acquisition module is used to acquire the fault type if a fault is detected in the steer-by-wire system. The first determining module is used to generate a fault alarm signal corresponding to the fault type according to the fault type, and to determine the target vehicle speed signal according to the fault alarm signal; The first transmitting module is used to transmit the fault alarm signal, the target vehicle speed signal, and the adaptive cruise control request signal to the intelligent driving system and the power system; wherein, the fault alarm signal and the adaptive cruise control request signal are used to establish a connection between the steer-by-wire system and the intelligent driving system; the fault alarm signal and the adaptive cruise control request signal are used to establish a connection between the steer-by-wire system and the power system; The second determining module is used to obtain the current vehicle speed, control the current vehicle speed based on the intelligent driving system and the power system according to the target vehicle speed signal to obtain the target vehicle speed, and output the target vehicle speed to the controller.

9. An electronic device, characterized in that, include: A processor and a memory, wherein the memory stores a computer program that, when executed by the processor, performs the method of any one of claims 1-7.

10. A computer-readable storage medium, characterized in that, The storage medium stores a computer program that, when executed by a processor, implements the method as described in any one of claims 1-7.

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