Cruise control method and system

Abstract

The invention relates to the technical field of cruise control, in particular to a cruise control method and system.The method comprises the steps that in response to a pulse signal of a cruise switch, a multifunctional steering wheel sends the pulse signal of the cruise switch to an engine controller through a CAN bus, and a vehicle is controlled to enter a pre-cruise state; when the vehicle is in the pre-cruise state, in a set cruise control vehicle speed range, responding to a cruise roller trigger signal of the multifunctional steering wheel, generating a cruise determination signal, and controlling the vehicle to enter a cruise control state; and when the vehicle is in a constant-speed cruise state, in a set constant-speed cruise vehicle speed range, responding to a cruise roller up-down adjusting signal of the multifunctional steering wheel according to a set vehicle speed adjusting step length, generating a vehicle speed adjusting signal, and adjusting the cruise vehicle speed. On the basis that the multifunctional steering wheel cancels a cruise control key wire harness loop, the cruise control operation intention of a driver can be effectively recognized, and the cruise control function is efficiently and stably achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of cruise control, and in particular to a cruise control method and system. Background Art

[0002] As a driving assistance function, vehicle cruise control has the advantages of reducing energy consumption and reducing the driver's labor intensity, and has been widely used in recent years. With the development of electronic technology and the automobile industry, more and more vehicles now use electronic throttle technology, which makes the cruise control function easier to implement and safer and more reliable.

[0003] With the popularization and development of the cruise control function in automobiles, a series of problems in the actual use of cruise control have attracted wide attention. When the vehicle is equipped with a multi-function steering wheel, since the multi-function steering wheel cancels the cruise control button wiring harness circuit, the engine controller cannot effectively identify the driver's cruise operation intention through the voltage value of the cruise control button, and the cruise control function occasionally fails. Summary of the invention

[0004] The present invention aims to provide a cruise control method and system for realizing a cruise control function through a multi-function steering wheel when a cruise control button wiring harness loop is eliminated.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] In a first aspect, a cruise control method is provided, comprising:

[0007] The multi-function steering wheel sends the pulse signal of the cruise control switch to the engine controller via the CAN bus, so that the engine controller controls the vehicle to enter the pre-cruise state;

[0008] When the vehicle is in the pre-cruise state, within the set cruise control speed range, in response to the cruise wheel trigger signal of the multi-function steering wheel, a cruise confirmation signal is generated, and the multi-function steering wheel sends the cruise confirmation signal to the engine controller via the CAN bus, so that the engine controller controls the vehicle to enter the cruise control state;

[0009] When the vehicle is in the cruise control state, within the set cruise control speed range, the cruise wheel up and down adjustment signal of the multi-function steering wheel is responded to according to the set speed adjustment step length to generate a speed adjustment signal. The multi-function steering wheel sends the speed adjustment signal to the engine controller through the CAN bus, so that the engine controller adjusts the cruise speed.

[0010] Furthermore, the cruise control speed range is set to 40-150 km / h.

[0011] Furthermore, when the vehicle is in the pre-cruise state, in response to the accelerator pedal signal, the vehicle accelerates until it reaches the first cruising speed. When the accelerator pedal signal disappears, the cruise wheel button of the multi-function steering wheel is adjusted downward, and the vehicle enters the cruise control state at the first cruising speed.

[0012] Furthermore, when the vehicle is in the cruise control state, each time the cruise wheel key is adjusted upward, the cruising speed increases by 1 km / h compared to the original speed, and each time the cruise wheel key is adjusted downward, the cruising speed decreases by 1 km / h compared to the original speed.

[0013] Further, when the vehicle is in a cruise state at a first cruise speed, the vehicle accelerates in response to an accelerator pedal signal, and after the accelerator pedal signal disappears, the vehicle returns to the first cruise speed.

[0014] Furthermore, when the cruising speed increases to the set maximum cruising speed, if the engine controller receives the cruise wheel upward adjustment signal or the accelerator pedal signal of the multi-function steering wheel again, the cruising speed is controlled to remain unchanged at the maximum cruising speed.

[0015] Further, when the vehicle is in the cruise control state, in response to a pulse signal of the cruise control switch or a brake pedal signal or an electronic parking brake signal, the engine controller controls the vehicle to exit the cruise control state and enter the pre-cruise state.

[0016] Furthermore, when the vehicle exits the cruise control state and enters the pre-cruise state,

[0017] If the current vehicle speed is within the set cruise speed range, the cruise wheel button of the multi-function steering wheel is adjusted upwards, and the vehicle automatically accelerates until it returns to the cruise speed before exiting the cruise;

[0018] If the current vehicle speed is lower than the set minimum cruise speed, in response to the accelerator pedal signal, the vehicle accelerates until the minimum cruise speed is reached. After the accelerator pedal signal disappears, the cruise wheel button of the multi-function steering wheel is adjusted upward, and the vehicle automatically accelerates until the cruise speed before exiting the cruise is restored.

[0019] In response to the cruise control switch signal, the pre-cruise state is exited.

[0020] In a second aspect, a cruise control system is provided, comprising: a multi-function steering wheel, an infotainment audio host, a central gateway and an engine controller connected in sequence via a CAN bus;

[0021] The multi-function steering wheel is provided with a cruise control switch and a cruise wheel, which are used to send the pulse signal of the cruise control switch to the engine controller via the CAN bus through the infotainment audio host and the central gateway, so that the engine controller controls the vehicle to enter the pre-cruise state;

[0022] When the vehicle is in the pre-cruise state, within the set cruise control speed range, the multi-function steering wheel is further used to generate a cruise confirmation signal by triggering the cruise wheel, and the cruise confirmation signal is sent to the engine controller via the CAN bus via the infotainment audio host and the central gateway, so that the engine controller controls the vehicle to enter the cruise control state;

[0023] When the vehicle is in cruise control, within the set cruise control speed range, the multi-function steering wheel is also used to respond to the cruise wheel adjustment signal by adjusting the cruise wheel up and down according to the set speed adjustment step, generate a speed adjustment signal, and send the speed adjustment signal to the engine controller via the CAN bus through the infotainment audio host and the central gateway, so that the engine controller adjusts the cruise speed.

[0024] Furthermore, the system further comprises:

[0025] The instrument cluster module is connected to the engine controller via the CAN bus and is used to display the current cruise status of the vehicle using the cruise indicator light;

[0026] When the vehicle is in the pre-cruise state, the cruise indicator light is green and flashing;

[0027] When the vehicle is in cruise control, the cruise indicator light is green and always on;

[0028] When the vehicle exits the pre-cruise state, the cruise indicator light goes out.

[0029] Technical effects and advantages of the present invention:

[0030] (1) The multi-function steering wheel is only equipped with a cruise control switch and a cruise wheel. The cruise control function is turned on by sending a pulse signal from the cruise control switch to the engine controller, which simplifies the appearance of the steering wheel and improves convenience.

[0031] (2) The cruise wheel on the multi-function steering wheel is used to adjust the cruise state and cruise speed. After the vehicle exits the cruise state, the cruise wheel can also be used to achieve other functions, which is practical and convenient.

[0032] (3) The CAN bus is used to transmit the pulse signal of the cruise control switch, the cruise confirmation signal, and the vehicle speed adjustment signal. On the basis of eliminating the wiring harness loop of the cruise control button, the driver's cruise operation intention is effectively identified, and the cruise control function is realized efficiently and stably.

[0033] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0035] Figure 1 A flowchart of a cruise control method provided by a first embodiment of the present invention;

[0036] Figure 2 A schematic structural diagram of a cruise control system provided by a second embodiment of the present invention;

[0037] Figure 3 is a partial schematic diagram of a multi-function steering wheel in a second embodiment of the present invention;

[0038] Figure 4 A schematic diagram of the working principle of a cruise control system in a second embodiment of the present invention;

[0039] Cruise control switch 1; cruise wheel 2. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] To solve the deficiencies of the prior art, the present invention discloses a cruise control method, such as Figure 1 As shown, the cruise control method includes:

[0042] The multi-function steering wheel sends the pulse signal of the cruise control switch to the engine controller via the CAN bus, so that the engine controller controls the vehicle to enter the pre-cruise state;

[0043] When the vehicle is in the pre-cruise state, within the set cruise control speed range, in response to the cruise wheel trigger signal of the multi-function steering wheel, a cruise confirmation signal is generated, and the multi-function steering wheel sends the cruise confirmation signal to the engine controller via the CAN bus, so that the engine controller controls the vehicle to enter the cruise control state;

[0044] When the vehicle is in the cruise control state, within the set cruise control speed range, the cruise wheel up and down adjustment signal of the multi-function steering wheel is responded to according to the set speed adjustment step length to generate a speed adjustment signal. The multi-function steering wheel sends the speed adjustment signal to the engine controller through the CAN bus, so that the engine controller adjusts the cruise speed.

[0045] In an embodiment of the present invention, a vehicle is equipped with a multi-function steering wheel, and only one cruise control switch is arranged on the multi-function steering wheel, and other cruise control function keys and cruise control button wiring harness loops are cancelled. The multi-function steering wheel is used to send a pulse signal of the cruise control switch to an engine controller to turn on the cruise control function, thereby simplifying the appearance of the steering wheel and improving convenience. The cruise state adjustment and cruise speed adjustment are realized by using a cruise roller of the multi-function steering wheel. After the vehicle exits the cruise state, the cruise roller can also be used to realize other functions, such as volume adjustment, air conditioning temperature adjustment, etc., which is highly practical and convenient. The CAN bus is used to transmit the pulse signal of the cruise control switch, the cruise confirmation signal, and the vehicle speed adjustment signal. On the basis of canceling the cruise control button wiring harness loop, the driver's cruise operation intention is effectively identified, and the cruise control function is realized efficiently and stably.

[0046] According to a preferred embodiment of the present invention, the cruise control speed range is set to 40-150 km / h.

[0047] After the vehicle is started normally, press the cruise control switch on the multi-function steering wheel, and the engine controller controls the vehicle to enter the pre-cruise state. If the current vehicle speed is between 40 and 150 km / h, adjust the cruise wheel downward and the vehicle will enter the cruise control state according to the current vehicle speed.

[0048] When the vehicle is in the pre-cruise state, the accelerator pedal is depressed, and in response to the accelerator pedal signal, the vehicle accelerates until it reaches the first cruising speed, and then the accelerator pedal is released. When the accelerator pedal signal disappears, the cruise wheel button of the multi-function steering wheel is adjusted downward, and the vehicle enters the cruise control state at the first cruising speed.

[0049] When the vehicle is in a cruise control state, within a set cruise control speed range, the cruise wheel up and down adjustment signal of the multi-function steering wheel is responded to according to the set speed adjustment step length to generate a speed adjustment signal, that is, each time the cruise wheel key is adjusted upward, the cruising speed increases by 1 km / h compared with the original speed, but does not exceed the set maximum cruising speed; each time the cruise wheel key is adjusted downward, the cruising speed decreases by 1 km / h compared with the original speed, but does not fall below the set minimum cruising speed.

[0050] When the vehicle is in a cruise state at a first cruise speed, the vehicle accelerates in response to an accelerator pedal signal, and after the accelerator pedal signal disappears, the vehicle returns to the first cruise speed.

[0051] In the cruise control state, when the cruising speed increases to the set maximum cruising speed, if the cruise wheel button on the multi-function steering wheel is continued to be adjusted upward or the accelerator pedal is pressed, when the engine controller receives the cruise wheel upward adjustment signal or the accelerator pedal signal again, the cruise speed is controlled to remain unchanged at the maximum cruising speed to ensure driving safety.

[0052] When the vehicle is in the cruise control state, if the cruise control switch is pressed or the brake pedal is stepped on or the electronic parking brake button is lifted, in response to the pulse signal of the cruise control switch or the brake pedal signal or the electronic parking brake signal, the engine controller controls the vehicle to exit the cruise control state and enter the pre-cruise state.

[0053] According to a preferred embodiment of the present invention, when the vehicle exits the cruise control state and enters the pre-cruise state:

[0054] If the current vehicle speed is within the set cruise speed range, the cruise wheel button of the multi-function steering wheel is adjusted upwards, and the vehicle automatically accelerates until it returns to the cruise speed before exiting the cruise;

[0055] If the current vehicle speed is lower than the set minimum cruise speed, the vehicle accelerates in response to the accelerator pedal signal until it reaches the minimum cruise speed. After the accelerator pedal signal disappears, the cruise wheel button of the multi-function steering wheel is adjusted upwards, and the vehicle automatically accelerates until it returns to the cruising speed before exiting the cruise.

[0056] In the pre-cruise state, if the cruise control switch is pressed, the vehicle will exit the pre-cruise state in response to a pulse signal of the cruise control switch.

[0057] According to the cruise control method provided by the embodiment of the present invention, when the vehicle is in the cruise state, the cruise wheel of the multi-function steering wheel is used to realize cruise state adjustment and cruise vehicle speed adjustment. After exiting the cruise state, the cruise wheel can also be used to realize functions such as volume adjustment and air conditioning temperature adjustment, which is highly practical and convenient.

[0058] A second embodiment of the present invention provides a cruise control system, such as Figures 2 to 4 As shown, the system includes: a multi-function steering wheel MFS, an infotainment audio host IHU, a central gateway CGW and an engine controller EMS which are connected in sequence via a CAN bus.

[0059] Among them, the multi-function steering wheel MFS is provided with a cruise control switch 1 and a cruise roller 2. The multi-function steering wheel MFS is used to send the pulse signal of the cruise control switch 1 to the engine controller EMS through the CAN bus via the infotainment audio host IHU and the central gateway CGW, so that the engine controller EMS controls the vehicle to enter the pre-cruise state.

[0060] When the vehicle is in the pre-cruise state, within the set cruise control speed range, the multi-function steering wheel MFS is also used to generate a cruise confirmation signal by triggering the cruise roller 2, and the cruise confirmation signal is sent to the engine controller EMS through the CAN bus via the infotainment audio host IHU and the central gateway CGW, so that the engine controller EMS controls the vehicle to enter the cruise control state.

[0061] When the vehicle is in cruise control, within the set cruise control speed range, the multi-function steering wheel is also used to respond to the cruise wheel adjustment signal by adjusting the cruise wheel 2 up and down according to the set speed adjustment step, generate a speed adjustment signal, and send the speed adjustment signal to the engine controller EMS via the CAN bus via the infotainment audio host IHU and the central gateway CGW, so that the engine controller EMS adjusts the cruise speed.

[0062] like Figure 3 and 4 As shown, when the vehicle is driving normally, a cruise control request signal is sent through the multi-function steering wheel MFS. The cruise control request signal includes a pulse signal generated by the cruise control switch 1 and a vehicle speed adjustment signal (speed increase signal or speed decrease signal) generated by the cruise roller 2. The signal is sent to the engine controller EMS via the infotainment audio unit IHU and the central gateway CGW. The engine controller EMS controls the vehicle to enter or exit the cruise state, and controls the throttle opening by identifying the vehicle speed adjustment signal, thereby controlling the actual vehicle speed in response to the target vehicle speed.

[0063] Furthermore, the system further comprises: an instrument cluster module ICM connected to the engine controller EMS via a CAN bus. The engine controller EMS sends the vehicle cruise state, including the pre-cruise state, the fixed speed cruise state or the exit cruise state, to the instrument cluster module ICM.

[0064] The instrument cluster module (ICM) is used to display the vehicle's current cruise status using the cruise indicator light:

[0065] When the vehicle is in the pre-cruise state, the cruise indicator light is green and flashing;

[0066] When the vehicle is in cruise control, the cruise indicator light is green and always on;

[0067] When the vehicle exits the pre-cruise state, the instrument cruise indicator light goes out.

[0068] In an embodiment of the present invention, when the vehicle is in a pre-cruise state, if the current vehicle speed is within a set cruise control speed range, such as 40 to 150 km / h, the cruise wheel is adjusted downward and the vehicle enters a cruise control state.

[0069] When the vehicle is in the pre-cruise state, in response to the accelerator pedal signal, the vehicle accelerates until it reaches the first cruising speed, and when the accelerator pedal is released and the accelerator pedal signal disappears, the cruise wheel button of the multi-function steering wheel is adjusted downward, and the vehicle enters the cruise control state at the first cruising speed.

[0070] When the vehicle is in a cruise control state, within a set cruise control speed range, the cruise wheel up and down adjustment signal of the multi-function steering wheel is responded to according to the set speed adjustment step length to generate a speed adjustment signal, that is, each time the cruise wheel key is adjusted upward, the cruising speed increases by 1 km / h compared with the original speed, but does not exceed the set maximum cruising speed; each time the cruise wheel key is adjusted downward, the cruising speed decreases by 1 km / h compared with the original speed, but does not fall below the set minimum cruising speed.

[0071] When the vehicle is in a cruise state at a first cruise speed, the vehicle accelerates in response to an accelerator pedal signal, and after the accelerator pedal signal disappears, the vehicle returns to the first cruise speed.

[0072] When the cruising speed increases to the set maximum cruising speed, if the cruise wheel button on the multi-function steering wheel is continued to be adjusted upward or the accelerator pedal is pressed, the engine controller EMS receives the cruise wheel upward adjustment signal or the accelerator pedal signal again, and the cruise speed is controlled to remain unchanged at the maximum cruising speed to ensure driving safety.

[0073] When the vehicle is in cruise control, press the cruise control switch or step on the brake pedal or lift the electronic parking brake button EPB, the engine controller EMS controls the vehicle to exit the cruise control state and enter the pre-cruise state, and the cruise indicator light is green and flashing.

[0074] According to a preferred embodiment of the present invention, when the vehicle exits the cruise control state and enters the pre-cruise state:

[0075] If the current vehicle speed is within the set cruise speed range, the cruise wheel button of the multi-function steering wheel is adjusted upwards, and the vehicle automatically accelerates until it returns to the cruise speed before exiting the cruise;

[0076] If the current vehicle speed is lower than the set minimum cruise speed, in response to the accelerator pedal signal, the vehicle accelerates until the minimum cruise speed is reached. After the accelerator pedal signal disappears, the cruise wheel button of the multi-function steering wheel is adjusted upward, and the vehicle automatically accelerates until the cruise speed before exiting the cruise is restored.

[0077] Press the cruise control switch, the vehicle exits the pre-cruise state and the cruise indicator light goes out.

[0078] Regarding the system in the above embodiment, the specific manner in which each unit module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0079] Based on the same inventive concept, an embodiment of the present invention further provides an electronic device, including: a memory and a processor, wherein the processor is used to read and execute a computer program stored in the memory to implement the aforementioned cruise control method.

[0080] Based on the same inventive concept, an embodiment of the present invention further provides a computer storage medium, wherein the computer storage medium stores computer executable instructions, and the computer executable instructions can implement the aforementioned cruise control method when executed.

[0081] In the several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the modules is only a logical function division. There may be other division methods in actual implementation, such as multiple modules or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or modules, which can be electrical, mechanical or other forms.

[0082] The modules described as separate components may or may not be physically separated, and the components displayed as modules may or may not be physical modules, that is, they may be located in one place, or they may be distributed on multiple network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. In addition, the functional modules in the various embodiments of the present invention may be integrated into a processing module, or each module may exist physically separately, or two or more modules may be integrated into one module. The above-mentioned integrated modules may be implemented in the form of hardware or in the form of software functional modules.

[0083] If the integrated module is implemented in the form of a software function module and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.

[0084] It should be noted that, for the convenience of description, the aforementioned method embodiments are all described as a series of action combinations, but those skilled in the art should be aware that the present invention is not limited by the described action sequence, because according to the present invention, certain steps can be performed in other sequences or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

[0085] In the above embodiments, the description of each embodiment has its own emphasis. For the part not described in detail in a certain embodiment, please refer to the relevant description of other embodiments. Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not used to limit the present invention. Although the present invention is described in detail with reference to the above embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the above embodiments, or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A cruise control method, characterized in that: The method comprises: The multi-function steering wheel sends the pulse signal of the cruise control switch to the engine controller via the CAN bus, so that the engine controller controls the vehicle to enter the pre-cruise state; When the vehicle is in the pre-cruise state, within the set cruise control speed range, in response to the cruise wheel trigger signal of the multi-function steering wheel, a cruise confirmation signal is generated, and the multi-function steering wheel sends the cruise confirmation signal to the engine controller via the CAN bus, so that the engine controller controls the vehicle to enter the cruise control state; When the vehicle is in the cruise control state, within the set cruise control speed range, the cruise wheel up and down adjustment signal of the multi-function steering wheel is responded to according to the set speed adjustment step length to generate a speed adjustment signal. The multi-function steering wheel sends the speed adjustment signal to the engine controller through the CAN bus, so that the engine controller adjusts the cruise speed.

2. The method according to claim 1, characterized in that The cruise control speed range is set to 40-150 km / h.

3. The method according to claim 1, characterized in that When the vehicle is in the pre-cruise state, in response to the accelerator pedal signal, the vehicle accelerates until it reaches the first cruising speed. When the accelerator pedal signal disappears, the cruise wheel key of the multi-function steering wheel is adjusted downward, and the vehicle enters the cruise control state at the first cruising speed.

4. The method according to claim 1, characterized in that: When the vehicle is in cruise control, each time the cruise wheel button is adjusted upward, the cruising speed increases by 1km / h compared to the original speed, and each time the cruise wheel button is adjusted downward, the cruising speed decreases by 1km / h compared to the original speed.

5. The method according to claim 3, characterized in that: When the vehicle is in a cruise state at a first cruise speed, the vehicle accelerates in response to an accelerator pedal signal, and after the accelerator pedal signal disappears, the vehicle returns to the first cruise speed.

6. The method according to claim 1, characterized in that When the cruising speed increases to the set maximum cruising speed, if the engine controller receives the cruise wheel upward adjustment signal of the multi-function steering wheel or the accelerator pedal signal again, the cruising speed is controlled to remain unchanged at the maximum cruising speed.

7. The method according to claim 1, characterized in that When the vehicle is in the cruise control state, in response to a pulse signal of the cruise control switch or a brake pedal signal or an electronic parking brake signal, the engine controller controls the vehicle to exit the cruise control state and enter the pre-cruise state.

8. The method according to claim 7, characterized in that When the vehicle exits the cruise control state and enters the pre-cruise state, If the current vehicle speed is within the set cruise speed range, the cruise wheel button of the multi-function steering wheel is adjusted upwards, and the vehicle automatically accelerates until it returns to the cruise speed before exiting the cruise; If the current vehicle speed is lower than the set minimum cruise speed, in response to the accelerator pedal signal, the vehicle accelerates until the minimum cruise speed is reached. After the accelerator pedal signal disappears, the cruise wheel button of the multi-function steering wheel is adjusted upward, and the vehicle automatically accelerates until the cruise speed before exiting the cruise is restored. In response to the cruise control switch signal, the pre-cruise state is exited.

9. A cruise control system, characterized in that: The system includes: a multi-function steering wheel, an infotainment audio host, a central gateway and an engine controller connected in sequence via a CAN bus; The multi-function steering wheel is provided with a cruise control switch and a cruise wheel, which are used to send the pulse signal of the cruise control switch to the engine controller via the CAN bus through the infotainment audio host and the central gateway, so that the engine controller controls the vehicle to enter the pre-cruise state; When the vehicle is in the pre-cruise state, within the set cruise control speed range, the multi-function steering wheel is further used to generate a cruise confirmation signal by triggering the cruise wheel, and the cruise confirmation signal is sent to the engine controller via the CAN bus via the infotainment audio host and the central gateway, so that the engine controller controls the vehicle to enter the cruise control state; When the vehicle is in cruise control, within the set cruise control speed range, the multi-function steering wheel is also used to respond to the cruise wheel adjustment signal by adjusting the cruise wheel up and down according to the set speed adjustment step, generate a speed adjustment signal, and send the speed adjustment signal to the engine controller via the CAN bus through the infotainment audio host and the central gateway, so that the engine controller adjusts the cruise speed.

10. The system according to claim 9, characterized in that The system further comprises: The instrument cluster module is connected to the engine controller via the CAN bus and is used to display the current cruise status of the vehicle using the cruise indicator light; When the vehicle is in the pre-cruise state, the cruise indicator light is green and flashing; When the vehicle is in cruise control, the cruise indicator light is green and always on; When the vehicle exits the pre-cruise state, the cruise indicator light goes out.

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