A control method for a portable intelligent cruise control system for new energy vehicles

Abstract

The invention discloses a control method for a convenient intelligent cruise control system of a new energy vehicle, comprising the following steps: after a vehicle controller is awakened by vehicle startup, the cruise control system is in an initial mode by default, and the vehicle controller cannot perform any control on the vehicle in the initial mode; when the cruise control system detects that a first condition in the vehicle controller satisfies a logical judgment, the initial mode jumps to a standby mode; by setting a first switch and a fourth switch in a very simple triggering mode, the driver can quickly enter or exit the cruise control function by manually controlling the vehicle, and by dividing the cruise control system into four different working modes, a complex system can be simplified.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicles, and in particular to a control method for a convenient intelligent cruise control system of a new energy vehicle. Background Art

[0002] The cruise control function is a common driving function in automobiles. After the driver presses the combination button on the steering wheel, the vehicle ECU will control the vehicle, and the vehicle can be driven forward according to the speed set by the driver.

[0003] However, the existing control steps of the cruise control function are complicated, and the switch button functions are complicated. When using the cruise control function, the driver often makes mistakes in the face of numerous buttons. Because the cruise control function is generally used on high-speed roads, such a complex function design makes it difficult for the driver to quickly and effectively enter the cruise control function, which can easily cause the driver to be distracted and look down at the steering wheel button functions and instrument speed settings, causing traffic safety hazards. In addition, this automatic speed control, the cruise function is controlled by the ECU to control the vehicle. If the system function fails and causes the vehicle to stall, the driver's way of turning off the cruise control is too simple, and the potential driving risk is relatively large.

[0004] Therefore, a control method for a convenient intelligent cruise control system of new energy vehicles is proposed. Summary of the invention

[0005] The purpose of the present invention is to reduce the number of key switches and the complexity of function use by performing algorithm fusion and deduction to determine the driver's potential needs, so that the driver can quickly and safely enter or exit the cruise control function when driving the vehicle.

[0006] To achieve the above object, the present invention provides the following technical solution: a control method for a portable intelligent cruise control system of a new energy vehicle, comprising the following steps:

[0007] S1. After the vehicle controller is awakened by the vehicle start-up, the cruise control system is in the initial mode by default. In the initial mode, the vehicle controller cannot control the vehicle in any way.

[0008] S2: When the cruise control system detects that the first condition in the vehicle controller satisfies the logic judgment, the initial mode jumps to the standby mode;

[0009] S3: In standby mode, the cruise control system does not control the vehicle speed, but can set the vehicle speed. The standby mode is sent to the vehicle system in real time to inform the vehicle system to remind the driver of the current cruise control system mode status;

[0010] S4: When the cruise control system detects that the second condition and the first condition in the vehicle controller simultaneously meet the logic judgment, the standby mode jumps to the working mode;

[0011] S5. In the working mode, the cruise control system will automatically control the vehicle speed according to the set vehicle speed, and send the mode to the vehicle system to inform the driver of the current cruise control system status.

[0012] Preferably: if any one of the initial mode, the standby mode and the working mode meets the third condition, the mode directly jumps to the fault mode, in which the cruise control system cannot perform any control on the vehicle and cannot jump to other modes during this startup.

[0013] Preferably: the vehicle controller is connected to the first switch signal, the second switch signal, the third switch signal and the fourth switch signal through a wiring harness;

[0014] The first switch signal is used to start cruising, the second switch signal is used to increase the vehicle speed, the third switch signal is used to reduce the vehicle speed, and the fourth switch signal is used to turn off cruising;

[0015] The switch that is pressed first will trigger the function first. Each time a switch is pressed, a function requirement is triggered. If the switches are pressed at the same time, all signals will be invalid.

[0016] Preferably: the first condition is satisfied by judging that the first switch signal is pressed to trigger the enable signal.

[0017] Preferably: the second condition is determined by judging the vehicle speed, seat belt status, vehicle gear position, vehicle driving status and instrument cruise status signal;

[0018] When the cruise control system is in standby mode, if both the second condition and the first condition meet the set values, it will jump to the working mode;

[0019] When the cruise control system is in the working mode, if any one of the signals in the second condition is not satisfied with the set value, the system will jump back to the standby mode.

[0020] Preferably: the third condition is determined by judging the working state and fault state of each ECU in the vehicle system, and a logical judgment is performed when the judgment signal value reaches the fault threshold.

[0021] Preferably: when the cruise control system detects that the fourth condition in the vehicle controller satisfies the logic judgment, the standby mode jumps back to the initial mode;

[0022] The fourth condition is determined by judging the state of the brake pedal and the state of the fourth switch signal, and a logical judgment is performed when the signal value satisfies the set value.

[0023] Preferably, the standby mode and the working mode will send the set vehicle speed value to the vehicle system in real time.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. By setting the first switch and the fourth switch as a very simple triggering method, the driver can quickly enter or exit the cruise control function by manually controlling the vehicle. By dividing the cruise control system into four different working modes, the complex system can be simplified.

[0026] 2. By setting this standby mode with a preparatory buffer, the driver can set the vehicle speed in advance according to the road conditions and turn on the cruise control mode when the road conditions are safe, ensuring driving safety and avoiding distraction and dangerous driving under driving conditions.

[0027] 3. By judging the second condition and the first condition at the same time, it can be ensured that the vehicle system conditions meet the working conditions and the driver confirms to enter the cruise control function again, avoiding accidents such as vehicle stalling caused by the system automatically switching the vehicle control mode without the driver's request and confirmation in the current state.

[0028] 4. By detecting each safety signal in the second condition, the driver's driving safety can be improved. At the same time, if the vehicle stalls or the fourth switch signal fails, the driver can use the judgment mechanism in the second condition, such as the driver opens the main driving door or opens the seat belt, etc., the cruise control system will exit the vehicle speed control and return the vehicle driving right to the driver. This multi-channel method of exiting the cruise control function can improve vehicle driving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the vehicle controller system of the present invention;

[0030] Figure 2 is a flow chart of the cruise control system mode of the present invention;

[0031] Figure 3 It is a simplified diagram of the steps of the cruise control mode of the present invention. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0033] See also Figure 1-3The present invention provides a technical solution: a vehicle controller is connected to a first switch signal, a second switch signal, a third switch signal, a fourth switch signal and other vehicle network signals through a wiring harness, and the vehicle controller includes a cruise control system, which consists of an initial mode, a standby mode, a working mode and a fault mode.

[0034] By dividing the cruise control system into four different working modes, a complex system can be simplified. According to different working modes, the relevant controllers of the vehicle system can be informed of the real-time operating status of the vehicle's cruise control system. Each controller can quickly push the cruise working mode to the driver or the remote monitoring platform according to the real-time mode of the cruise system. The driver can understand the working status of the cruise system of the driving vehicle in real time. If there is a dispute over driving problems, the historical data of the remote platform can be retrieved to trace the root cause.

[0035] After the vehicle controller is awakened by the vehicle start-up, the cruise control system is in the initial mode by default. In the initial mode, the vehicle controller cannot control the vehicle at all. The initial mode can lock all the vehicle automatic control permissions to ensure the safety of the driver's manual control of the vehicle in normal driving mode. Only when the cruise control system detects that the first condition in the vehicle controller meets the logic algorithm judgment and determines that the driver actively starts to request to enter the cruise control function, the initial mode will run and jump to the standby mode.

[0036] In standby mode, the cruise control system does not control the vehicle speed, but can set the vehicle speed. By setting this standby mode with a preparatory buffer, the driver can set the speed in advance according to the road conditions and turn on the cruise control mode when the road conditions are safe, ensuring the driving safety of the personnel and avoiding distraction under driving conditions to cause dangerous driving. The standby mode is sent to the vehicle system in real time to inform the vehicle system to remind the driver of the current cruise control system mode status. The vehicle system receives the standby mode signal and can remind the driver of the current cruise control system status by sound or electronic pattern display. The system actively reminds the driver to make relevant function operations and safety preparations in real time to improve the vehicle driving safety operation mechanism. The cruise control system detects that the second condition and the first condition in the vehicle controller meet the logical judgment at the same time, and the standby mode will be allowed to jump to the working mode. By judging the second condition and the first condition at the same time, the purpose is to ensure that the vehicle system conditions meet the working conditions and the driver confirms to enter the cruise control function again, so as to avoid the system automatically switching the vehicle control mode without the driver's request confirmation in the current state, causing accidents such as vehicle stalling.

[0037] In working mode, the cruise control system will automatically control the vehicle speed according to the set speed, and send the mode to the vehicle system to inform the driver of the current cruise control system status.

[0038] The cruise control system detects that the third condition in the vehicle controller satisfies the logical judgment. If any of the initial mode, standby mode and working mode meets the third condition, it will directly jump to the fault mode. All functions of the cruise control system will be disabled through the fault mode. In the fault mode, the cruise control system cannot control the vehicle in any way and cannot jump to other modes during this startup. When the cruise control fails in mode, the system operation stability can be ensured by limiting this startup to avoid the cruise control system mode jumping due to the unstable operation of the vehicle system-related control components, which may cause panic or misoperation to the driver.

[0039] The first condition is satisfied by judging that the first switch signal is pressed to trigger the enable signal. When the vehicle controller receives the first switch signal, it is judged that the driver has a request to actively enter the cruise control function.

[0040] The second condition is to judge the vehicle speed, seat belt status, vehicle gear position, vehicle driving status, instrument cruise status and other signals. If the cruise control system is in standby mode, when the second condition and the first condition all meet the set value, it will jump to the working mode. If the cruise control system is in working mode, any signal in the second condition does not meet the set value, it will jump back to the standby mode.

[0041] For example, when the vehicle controller detects that the vehicle speed is greater than 20 km / h, the driver's seat belt is fastened, the gear is in the forward gear, the vehicle is in a drivable state, the instrument cruise control icon is displayed, and the main driver's door is closed, these signals are all met, and the signal state of the second condition changes from prohibited to permitted. At the same time, the first condition is met, then the cruise control system jumps to the working mode. If the cruise control system is in the working mode, any signal in the second condition is not satisfied with the set value and then jumps back to the standby mode. Through this detection of various safety signals in the vehicle system, the safety of the driver driving the vehicle can be improved. At the same time, if the vehicle stalls or the fourth switch signal fails, the driver can use the judgment mechanism in the second condition, such as the driver opens the main driver's door or opens the seat belt, etc., the cruise control system will exit the vehicle speed control and return the vehicle driving right to the driver. This multi-channel method of exiting the cruise control function can improve vehicle driving safety.

[0042] The third condition is determined by judging the working status and fault status of each ECU in the vehicle system. When the judgment signal value reaches the fault threshold, a logical judgment is performed. When the vehicle controller detects that there is a serious fault in itself or a key controller in the vehicle system, such as a serious fault in the speed controller or the brake controller, the signal state of the third condition changes from prohibited to allowed.

[0043] The first switch signal is used to start the cruise function, the second switch signal is used to increase the vehicle speed, the third switch signal is used to reduce the vehicle speed, and the fourth switch signal is used to turn off the cruise function. The function can be triggered by pressing any switch first, and pressing the switch once triggers the function requirement once. If the switches are pressed at the same time, all signals are invalid.

[0044] The cruise control system detects that the fourth condition in the vehicle controller meets the logical judgment, and the standby mode jumps back to the initial mode. The fourth condition is determined by judging the brake pedal state and the fourth switch signal. When the signal value meets the set value, the logical judgment is passed.

[0045] For example, when the vehicle controller detects that the brake pedal is pressed or the fourth switch signal is triggered, the fourth condition signal state changes from prohibited to permitted, and the cruise control system mode jumps back to the initial mode, and the vehicle exits the cruise control function. These two ways of exiting the cruise control function allow the driver to quickly exit the control of the cruise control function in any situation, greatly improving operational convenience.

[0046] The standby mode and working mode will send the set speed value to the vehicle system in real time. By setting the speed value, the driver can clearly know the target speed value of the current vehicle cruise control.

[0047] Application Scenario Application

[0048] When the driver is driving the vehicle, the cruise control system in the vehicle controller is in the initial mode. At this time, the cruise control function is not turned on. Then, if the driver presses the first switch signal, the cruise control system jumps from the initial mode to the standby mode. After entering the standby mode, the cruise control system can enter the working mode according to the following conditions:

[0049] 1. If the second condition meets the logic judgment when the first switch signal is pressed, the system immediately jumps from the standby mode to the working mode. The speed of the cruise control system is the speed at which the vehicle enters the standby mode as the cruising speed to drive the vehicle. During this period, the cruising speed can be adjusted in real time through the second switch signal and the third switch signal.

[0050] 2. If the second condition does not meet the logic judgment when the first switch signal is pressed, the system continues to work in the standby mode and feedback is given that the condition is not met. After the driver reconfirms the operation and the vehicle system meets the second condition, the first switch signal needs to be pressed again to be allowed to enter the working mode;

[0051] In working mode, the vehicle is driven forward at the cruising speed. If the driver wants to exit the cruise control function, he can directly step on the brake pedal or press the fourth switch signal according to convenience. The cruise control system will jump back to the initial state from the action mode, the vehicle will exit the cruise control function, and the vehicle speed control will be returned to the driver.

[0052] During driving, when the vehicle controller detects that the third condition meets the logical judgment, the cruise control system enters fault mode. The cruise control function fails and the driver needs to take over the vehicle. Even if the third condition does not meet the judgment after a period of time, the driver needs to drive the vehicle to a safe area and restart the vehicle. After restarting, if the third condition does not meet the logical judgment, the cruise control function can be used again.

[0053] By setting the first switch and the fourth switch in a very simple triggering method, the driver can manually control the vehicle to quickly enter or exit the cruise control function. By dividing the cruise control system into four different working modes, the complex system can be simplified. According to different working modes, the relevant controllers of the vehicle system can be informed of the real-time operating status of the vehicle's cruise control system. Each controller can quickly push the cruise working mode to the driver or the remote monitoring platform according to the real-time mode of the cruise system. The driver can understand the working status of the cruise system of the driving vehicle in real time. If there is a dispute over driving problems, the historical data of the remote platform can be retrieved to trace the root cause.

[0054] By setting this standby mode with a preparatory buffer, the driver can set the vehicle speed in advance according to the road conditions and turn on the cruise control mode when the road conditions are safe, ensuring driving safety and avoiding distraction and dangerous driving under driving conditions.

[0055] By judging the second condition and the first condition at the same time, it can be ensured that the vehicle system conditions meet the working conditions and the driver confirms to enter the cruise control function again, avoiding the system automatically switching the vehicle control mode without the driver's request and confirmation in the current state, causing accidents such as vehicle stalling. By limiting this startup, the system operation stability can be ensured to avoid the cruise control system from jumping in system mode due to the unstable operation of the vehicle system-related control components, causing panic or misoperation to the driver.

[0056] By detecting each safety signal in the second condition, the safety of the driver driving the vehicle can be improved. At the same time, if the vehicle stalls or the fourth switch signal fails, the driver can use the judgment mechanism in the second condition, such as the driver opens the main driving door or opens the seat belt, etc., the cruise control system will exit the vehicle speed control and return the vehicle driving right to the driver.

[0057] The multi-channel method of exiting the cruise control function can improve vehicle driving safety. The two methods of exiting the cruise control function, namely, when the brake pedal is pressed or the fourth switch signal is triggered, make it convenient for the driver to quickly exit the control of the cruise control function in any situation, thereby greatly improving operational convenience and vehicle safety redundancy.

[0058] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A control method for a portable intelligent cruise control system of a new energy vehicle, characterized in that: The following steps are involved: S1. After the vehicle controller is awakened by the vehicle start-up, the cruise control system is in the initial mode by default. In the initial mode, the vehicle controller cannot control the vehicle in any way. S2: When the cruise control system detects that the first condition in the vehicle controller satisfies the logic judgment, the initial mode jumps to the standby mode; S3: In standby mode, the cruise control system does not control the vehicle speed, but can set the vehicle speed. The standby mode is sent to the vehicle system in real time to inform the vehicle system to remind the driver of the current cruise control system mode status; S4: When the cruise control system detects that the second condition and the first condition in the vehicle controller simultaneously meet the logic judgment, the standby mode jumps to the working mode; S5. In the working mode, the cruise control system will automatically control the vehicle speed according to the set vehicle speed, and send the mode to the vehicle system to inform the driver of the current cruise control system status.

2. A control method for a portable intelligent cruise control system for a new energy vehicle according to claim 1, characterized in that: If any one of the initial mode, standby mode and working mode meets the third condition, the system directly jumps to the fault mode. In the fault mode, the cruise control system cannot perform any control on the vehicle and cannot jump to other modes during this startup.

3. The control method of a portable intelligent cruise control system for a new energy vehicle according to claim 1 is characterized in that: The vehicle controller is connected to a first switch signal, a second switch signal, a third switch signal and a fourth switch signal through a wiring harness; The first switch signal is used to start cruising, the second switch signal is used to increase the vehicle speed, the third switch signal is used to reduce the vehicle speed, and the fourth switch signal is used to turn off cruising; The switch that is pressed first will trigger the function first. Each time a switch is pressed, a function requirement is triggered. If the switches are pressed at the same time, all signals will be invalid.

4. A method for controlling a portable intelligent cruise control system for a new energy vehicle according to claim 3, characterized in that: The first condition is satisfied by judging that the first switch signal is pressed to trigger the enable signal.

5. The control method of a portable intelligent cruise control system for a new energy vehicle according to claim 1 is characterized in that: The second condition is determined by judging the vehicle speed, seat belt status, vehicle gear position, vehicle driving status and instrument cruise status signal; When the cruise control system is in standby mode, if both the second condition and the first condition meet the set values, it will jump to the working mode; When the cruise control system is in the working mode, if any one of the signals in the second condition is not satisfied with the set value, the system will jump back to the standby mode.

6. The method for controlling a portable intelligent cruise control system for a new energy vehicle according to claim 1, characterized in that: The third condition is determined by judging the working status and fault status of each ECU in the vehicle system, and a logical judgment is performed when the judgment signal value reaches the fault threshold.

7. The control method of a portable intelligent cruise control system for a new energy vehicle according to claim 3 is characterized in that: When the cruise control system detects that the fourth condition in the vehicle controller satisfies the logic judgment, the standby mode jumps back to the initial mode; The fourth condition is determined by judging the state of the brake pedal and the state of the fourth switch signal, and a logical judgment is performed when the signal value satisfies the set value.

8. The method for controlling a portable intelligent cruise control system for a new energy vehicle according to claim 1, characterized in that: The standby mode and the working mode will send the set vehicle speed value to the vehicle system in real time.

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