A vehicle active safety control method and related device

Abstract

The present invention provides a vehicle active safety control method and related device, relating to the field of vehicle control. In the present invention, according to the current operating parameter information of components in the drive system, an abnormal component can be determined from the various components, and then the abnormal level of the abnormal component is analyzed. Thus, according to the abnormal level of the abnormal component and the attribute information of the abnormal component, a vehicle actuator is controlled to perform a vehicle active safety operation, so as to reduce the influence degree of the abnormal component on the safe driving of the vehicle and ensure the safe driving of the vehicle. In addition, an abnormal prompt operation can also be performed to prompt the user, so that the user can perform vehicle maintenance operations in a timely manner to ensure vehicle safety.

Description

Technical Field

[0001] The present invention relates to the field of vehicle control, and more specifically, to a vehicle active safety control method and related devices. Background Art

[0002] During the operation of a vehicle, the vehicle may have potential safety hazards due to abnormal components, etc. Taking the transmission system as an example, components in the transmission system may experience problems such as sliding friction. At this time, the execution effect of the transmission system will be affected, and further, the driving safety of the vehicle will be affected. However, due to the relatively low degree of abnormality, the driver may not yet perceive this abnormality and cannot perform corresponding maintenance operations in a timely manner.

[0003] Then, how to perform vehicle control at this time is a technical problem that those skilled in the art urgently need to solve. Summary of the Invention

[0004] In view of this, the present invention provides a vehicle active safety control method and related devices to solve the problem that active safety monitoring operations on the transmission system are urgently needed.

[0005] To solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A vehicle active safety control method, comprising:

[0007] Detect the current operating parameter information of each component in the vehicle transmission system, where the current operating parameter information includes the current rotational speed and the current acceleration;

[0008] Based on the current operating parameter information, determine the abnormal components from the various components;

[0009] Analyze the abnormal level of the abnormal components according to the historical operating parameter information, and / or, the future operating parameter information of the abnormal components;

[0010] According to the abnormal level of the abnormal components and the attribute information of the abnormal components, control the vehicle actuator to perform vehicle active safety operations, and / or, abnormal prompt operations.

[0011] Optionally, based on the current operating parameter information, determining the abnormal components from the various components includes:

[0012] In accordance with the transmission link of the transmission system, sequentially take each component as a component to be analyzed;

[0013] Determine the reference operating parameter information of the component to be analyzed, where the reference operating parameter information includes the reference rotational speed and the reference acceleration;

[0014] Calculate the first degree of change between the current rotational speed of the component to be analyzed and the reference rotational speed, and calculate the second degree of change between the current acceleration of the component to be analyzed and the reference acceleration;

[0015] Take the component to be analyzed for which the first degree of change or the second degree of change meets the preset abnormal condition as an abnormal component.

[0016] Optionally, determine the reference operating parameter information of the component to be analyzed, including:

[0017] Determine the speed ratio of the component to be analyzed;

[0018] Calculate the reference operating parameter information of the component to be analyzed according to the speed ratio of the component to be analyzed and the current operating parameter information of the specified component having a transmission connection relationship with the component to be analyzed.

[0019] Optionally, the determination process of the preset abnormal condition includes:

[0020] Obtain the current operating condition; the current operating condition includes a downhill condition and a non-downhill condition;

[0021] Determine the preset abnormal condition corresponding to the current operating condition; among them, in the preset abnormal condition, the threshold value in the downhill condition is less than the threshold value in the non-downhill condition.

[0022] Optionally, analyze the abnormal level of the abnormal component according to the historical operating parameter information and / or future operating parameter information of the abnormal component, including:

[0023] Obtain the historical operating parameter information of the abnormal component;

[0024] Based on the historical operating parameter information, judge whether the abnormal duration of the abnormal component is greater than the preset time threshold, and whether the change trend of the operating parameter information of the abnormal component is the preset abnormal change trend;

[0025] If the abnormal duration of the abnormal component is not greater than the preset time threshold, and the change trend of the operating parameter information of the abnormal component is not the preset abnormal change trend, detect the future operating parameter information of the abnormal component at the next moment;

[0026] If it is determined based on the future operating parameter information that the abnormal component is not abnormal at the next moment, determine the abnormal level of the abnormal component as the first abnormal level;

[0027] If it is determined based on the future operating parameter information that the abnormal component is abnormal at the next moment, determine that the abnormal level of the abnormal component is switched from the first abnormal level to the second abnormal level.

[0028] Optionally, it further includes:

[0029] If the abnormal duration of the abnormal component is greater than a preset time threshold, or the change trend of the operating parameter information of the abnormal component is a preset abnormal change trend, determine that the abnormal level of the abnormal component is switched from the second abnormal level to the third abnormal level;

[0030] The abnormal levels of the first abnormal level, the second abnormal level, and the third abnormal level gradually increase.

[0031] Optionally, according to the abnormal level of the abnormal component and the attribute information of the abnormal component, control the vehicle actuator to perform vehicle active safety operations and / or abnormal prompt operations, including:

[0032] If the abnormal level of the abnormal component is the first abnormal level, control the indicator light to display the first color for abnormal prompt operation;

[0033] If the abnormal level of the abnormal component is the second abnormal level, control the indicator light to display the second color for abnormal prompt operation, and output abnormal prompt information;

[0034] If the abnormal level of the abnormal component is the third abnormal level, obtain the attribute information of the abnormal component;

[0035] Based on the attribute information of the abnormal component, determine whether the abnormal component is a transmission;

[0036] If so, control the transmission to enter the limp-home driving state, control the braking system to decelerate, and control the indicator light to display the third color for abnormal prompt operation;

[0037] If not, control the transmission to perform a gearshift operation, control the braking system to decelerate, and control the indicator light to display the third color for abnormal prompt operation.

[0038] Optionally, it further includes:

[0039] If it is detected that the vehicle is restarted after the vehicle stops, and the abnormal level of the abnormal component is the third abnormal level, send a prohibited ignition command to the igniter;

[0040] Output maintenance prompt information.

[0041] A vehicle active safety control device includes:

[0042] An information detection module for detecting current operating parameter information of each component in a vehicle transmission system, where the current operating parameter information includes current rotational speed and current acceleration;

[0043] A component determination module for determining abnormal components from the various components based on the current operating parameter information;

[0044] A degree determination module for analyzing the abnormal level of the abnormal components according to the historical operating parameter information and / or future operating parameter information of the abnormal components;

[0045] An active safety execution module for controlling a vehicle actuator to perform vehicle active safety operations and / or abnormal prompt operations according to the abnormal level of the abnormal components and the attribute information of the abnormal components.

[0046] A vehicle including a device for performing the above-mentioned vehicle active safety control method.

[0047] Compared with the prior art, the present invention has the following beneficial effects:

[0048] The present invention provides a vehicle active safety control method and related devices. In the present invention, abnormal components can be determined from the various components according to the current operating parameter information of the components in the transmission system, and then the abnormal level of the abnormal components is analyzed. Thus, according to the abnormal level of the abnormal components and the attribute information of the abnormal components, the vehicle actuator is controlled to perform vehicle active safety operations to reduce the influence degree of the abnormal components on the safe driving of the vehicle and ensure the safe driving of the vehicle. In addition, the user can also be prompted through abnormal prompt operations so that the user can perform vehicle maintenance operations in time to ensure vehicle safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0050] Figure 1 It is a flowchart of a vehicle active safety control method provided by an embodiment of the present invention;

[0051] Figure 2 It is an internal structure diagram of a transmission system provided by an embodiment of the present invention;

[0052] Figure 3 It is a flowchart of a method for determining abnormal components provided by an embodiment of the present invention;

[0053] Figure 4 A data schematic diagram provided by an embodiment of the present invention;

[0054] Figure 5 A flowchart of an exception handling method provided by an embodiment of the present invention;

[0055] Figure 6 An equipment interaction diagram of a vehicle active safety control method provided by an embodiment of the present invention;

[0056] Figure 7 A flowchart of another vehicle active safety control method provided by an embodiment of the present invention;

[0057] Figure 8 A structural schematic diagram of a vehicle active safety control device provided by an embodiment of the present invention;

[0058] Figure 9 A structural schematic diagram of an electronic device provided by an embodiment of the present invention. Detailed implementation manners

[0059] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0060] During the operation of a vehicle, the vehicle may have safety hazards due to reasons such as component abnormalities. In severe cases, it may cause the vehicle to be unable to drive normally, endangering the safety of drivers and passengers. Taking the transmission system as an example, the components in the transmission system may have problems such as slip friction. At this time, the execution effect of the transmission system will be affected, and further the driving safety of the vehicle will be affected. However, due to the relatively low degree of abnormality, the driver may not have perceived the abnormality and cannot perform corresponding maintenance operations in time.

[0061] Then, how to control the vehicle at this time is a technical problem that those skilled in the art urgently need to solve.

[0062] To solve this problem, the present invention adopts an active safety monitoring method for the transmission system, uses the rotational speed sensors of each component already installed in the vehicle, and uniformly sends them to the vehicle controller to monitor the rotational speed and acceleration of each level of components in real time. By calculating the speed difference range, component abnormalities can be discovered in the first time, and the preset active safety strategy can be executed to ensure the safety of the personnel in the vehicle.

[0063] In specific implementation, the operating conditions of each component in the drive system can be detected in real time or periodically. For example, the rotational speed and acceleration of the components are monitored. Based on the analysis of the rotational speed and acceleration, it is determined whether there are abnormal components in the drive system. If there are, corresponding active safety measures are adopted according to the abnormal level of the abnormal components, such as deceleration, gear shifting and other measures, to avoid safety failures caused by normal vehicle driving.

[0064] Based on the above, an embodiment of the present invention provides a vehicle active safety control method. The execution subject can be a vehicle controller (also known as a vehicle driving controller), a processor, an in-vehicle computer, etc., such as an MCU (Microcontroller Unit, microcontroller unit), an ECU (electronic Control Unit, electronic controller), etc. In addition, the execution subject can also be a device remotely connected to the vehicle, such as a terminal, a server, etc. After the vehicle collects the rotational speed and acceleration, it will transmit them to the device through a communication protocol. The device performs subsequent data processing operations. After the data processing is completed, the processing result is returned to the vehicle to be displayed on the vehicle's central control screen, so that the driver can timely understand the current abnormal situation of the vehicle.

[0065] Refer to Figure 1 , a vehicle active safety control method may include:

[0066] S11. Detect the current operating parameter information of each component in the vehicle drive system.

[0067] In practical applications, refer to Figure 2 , Figure 2 shows the internal structure of the drive system. Figure 2 In

[0068] The components included in the drive system can be classified hierarchically into:

[0069] An engine, a drive motor, a transmission, a main reducer, a left wheel and a right wheel.

[0070] In practical applications, the current operating parameter information includes the current rotational speed and the current acceleration. That is to say, it is necessary to monitor the accelerations of the engine, the drive motor, the transmission, the main reducer, the left wheel and the right wheel.

[0071] When monitoring the rotational speed and acceleration in this embodiment, the data collected by sensors already configured on the engine output shaft, drive motor output shaft, transmission output shaft, transfer case output shaft, final drive output shaft, left wheel, and right wheel can be used.

[0072] The sensor can use the rotational speed and rotational acceleration at the location of the sensor to obtain the current operating parameter information. To improve the accuracy of data collection and avoid the influence of accidental interference on the data, filtering operations can be performed on the collected rotational speed and acceleration. When filtering, hardware filtering methods or software filtering methods can be used, and specific configurations can be made according to the actual situation.

[0073] It should be noted that during vehicle driving, multiple operating parameter information can be detected in real time or periodically. The currently detected operating parameter information is called the current operating parameter information. The historically detected operating parameter information is called the historical operating parameter information, and in the future, such as the operating parameter information detected at the next moment of the current moment, it is called the future operating parameter information.

[0074] S12. Based on the current operating parameter information, determine the abnormal components from the various components.

[0075] Specifically, after detecting the rotational speed and acceleration of the components, if there are abnormalities such as fractures or sliding abrasions in the components, the rotational speed and acceleration of the corresponding components will be abnormal. Among them, it can be that one of the rotational speed and acceleration is abnormal, or both can be abnormal.

[0076] Therefore, in this embodiment, by monitoring whether the rotational speed and acceleration are abnormal, the abnormal components are determined.

[0077] S13. Analyze the abnormal level of the abnormal components according to the historical operating parameter information and / or future operating parameter information of the abnormal components.

[0078] In practical applications, after finding the abnormal components, since only one accidental abnormality does not indicate that the abnormal components are truly abnormal, other information needs to be combined, such as historical operating parameter information and / or future operating parameter information, to determine whether the abnormal components are truly abnormal and their abnormal levels.

[0079] In this embodiment, the abnormal levels can be divided into the first abnormal level, the second abnormal level, and the third abnormal level, and the abnormal levels of the first abnormal level, the second abnormal level, and the third abnormal level gradually increase. That is, the abnormality of the first abnormal level is the lightest, followed by the second abnormal level, and the third abnormal level is the most serious.

[0080] Correspondingly, different anomaly levels can also be fault levels. For example, the first anomaly level corresponds to the first fault level. At this time, the fault degree is light and is displayed in green. The second anomaly level corresponds to the second fault level. At this time, the fault degree is relatively serious and is displayed in yellow. The third anomaly level corresponds to the third fault level. At this time, the fault degree is serious and is displayed in red.

[0081] S14. Control the vehicle actuator to perform vehicle active safety operations and / or anomaly prompt operations according to the anomaly level of the abnormal component and the attribute information of the abnormal component.

[0082] Specifically, if the anomaly level of the abnormal component is serious, such as the third anomaly level, it indicates that there is a fault in the current vehicle that seriously affects vehicle driving safety. For example, when a component breaks, the transmission system can no longer work. If the vehicle continues to travel at the original speed, situations such as being unable to control the vehicle normally will occur. Therefore, vehicle controls such as deceleration, stopping, shifting gears, and limp-home mode can be adopted. If the transmission breaks, the limp-home mode, deceleration, and stopping can be used to protect the transmission. If other components break, downshifting, deceleration, and stopping can be used to protect the vehicle.

[0083] If transmission slip occurs, at this time, the anomaly level is relatively light, such as the first anomaly level. Continuing to drive the vehicle has a relatively small impact on vehicle safety. However, for vehicle safety, it is advisable to decelerate, downshift, or stop.

[0084] In addition to performing vehicle active safety operations, anomaly prompt operations can also be carried out. The fault degree of the first anomaly level is light and is displayed in green. The fault degree of the second anomaly level is relatively serious and is displayed in yellow. The fault degree of the third anomaly level is serious and is displayed in red.

[0085] It should be noted that the execution of vehicle active safety operations and anomaly prompt operations can be either executed alternatively or simultaneously. For example, at the first anomaly level and the second anomaly level, the fault is relatively light, and only the anomaly prompt operation can be adopted. At the third anomaly level, the fault is serious. For vehicle safety, it is safer and more reliable to execute vehicle active safety operations and anomaly prompt operations simultaneously.

[0086] In this embodiment, based on the current operating parameter information of the components in the transmission system, the abnormal components can be determined from the various components, and then the anomaly level of the abnormal components is analyzed. Thus, according to the anomaly level of the abnormal components and the attribute information of the abnormal components, the vehicle actuator is controlled to perform vehicle active safety operations to reduce the impact degree of the abnormal components on the safe driving of the vehicle and ensure the safe driving of the vehicle. In addition, the user can also be prompted through the anomaly prompt operation so that the user can perform vehicle maintenance operations in a timely manner to ensure vehicle safety.

[0087] Based on the above content, with reference to Figure 3 "determine the abnormal components from the respective components based on the current operating parameter information" may include:

[0088] S21. Sequentially take each component as the component to be analyzed according to the transmission link of the transmission system.

[0089] In practical applications, the transmission link of the transmission system is as Figure 2 shown, that is, sequentially take the engine, drive motor, transmission, main reducer, left wheel, and right wheel as the components to be analyzed, and analyze whether there are any abnormalities.

[0090] S22. Determine the reference operating parameter information of the component to be analyzed.

[0091] Among them, the reference operating parameter information includes reference speed and reference acceleration.

[0092] In order to be able to detect whether the current speed and acceleration of the component are correct, it is necessary to determine its corresponding reference speed and reference acceleration to analyze whether the speed and acceleration of the current component are normal.

[0093] With reference to Figure 4 , the speed ratio is the speed ratio relationship under flat road driving and uphill conditions, and the speeds of the left and right wheels are the same. In the turning condition, the turning radius of the wheel is calculated through the rotation angle of the wheel to calculate the relationship between n6 and n7.

[0094] For the engine, drive motor, and transmission, in the fuel - burning mode, since the output shaft of the engine is directly connected to the input shaft of the transmission, theoretically, n3 = n1 / i1. In the pure - electric mode, the output shaft of the drive motor is directly connected to the input shaft of the transmission, theoretically n3 = n2 / i1. Where n3 is the speed of the output shaft of the transmission, n1 is the speed of the output shaft of the engine, n2 is the speed of the output shaft of the drive motor, and i1 is the transmission ratio. Similarly, the acceleration a3 = a1 / i1 or a2 / i1. Where a1 is the acceleration of the output shaft of the transmission, a2 is the acceleration of the output shaft of the motor, and a3 is the acceleration of the output shaft of the transmission.

[0095] Therefore, for the transmission, in the fuel - burning mode, its reference speed is n1 / i1, and the reference acceleration is a1 / i1, that is, to determine whether n3 = n1 / i1 holds. In the pure - electric mode, its reference speed is n2 / i1, and the reference acceleration is a2 / i1.

[0096] For the transfer case, the final drive, the left wheel, and the right wheel, since the components in the transmission system are rigidly connected and some components have speed ratios, which can characterize the corresponding relationship between the rotational speeds and accelerations of two connected components, therefore, based on this speed ratio, the reference rotational speed and the reference acceleration can be obtained.

[0097] For example, the speed ratio of the transfer case is i2. Since the output shaft of the transmission is connected to the input shaft of the transfer case, the rotational speed of the output shaft of the transfer case is n4 = n3 / i2, and at the same time, the acceleration of the output shaft of the transfer case is a4 = a3 / i2. Then the reference rotational speed of the transfer case is n3 / i2, and the reference acceleration is a3 / i2, that is, to determine whether n4 = n3 / i2 and a4 = a3 / i2 hold. The determination methods of the reference rotational speed and the reference acceleration of the final drive are similar, and specifically, reference can be made to Figure 4 .

[0098] For the left wheel and the right wheel, their rotational speeds satisfy the relationship n6 + n7 = 2×n5. Therefore, the reference rotational speeds of the rotational speeds of the left wheel and the right wheel are 2×n5, that is, to determine whether n6 + n7 = 2×n5 holds. Similarly, the reference acceleration is 2×a5. The specific meanings of n6, n7, n5, a5, a6, and a7 are as Figure 4 shown.

[0099] In practical applications, when the component to be analyzed is the transmission, the transfer case, or the final drive, determine the speed ratio of the component to be analyzed. For example, the speed ratio of the transmission is i1, and then according to the speed ratio of the component to be analyzed and the current operating parameter information of the specified component that has a transmission connection with the component to be analyzed, calculate the reference operating parameter information of the component to be analyzed.

[0100] For example, the current rotational speed of the transmission is n3, and the speed ratio of the transfer case is i2. In the transmission connection, the output shaft of the transmission is connected to the input shaft of the transfer case, that is, the specified component connected to the transfer case is the transmission. The rotational speed of the transfer case is less than that of the transmission and satisfies the speed ratio relationship. Then the reference rotational speed of the transfer case is n3 / i2, and the implementation method of the reference acceleration is similar.

[0101] S23. Calculate the first change degree between the current rotational speed of the component to be analyzed and the reference rotational speed, and calculate the second change degree between the current acceleration of the component to be analyzed and the reference acceleration.

[0102] Taking the transfer case as an example of the component to be analyzed, the current rotational speed is n4, and the current acceleration is a4. Its reference rotational speed is n3 / i2, and the reference acceleration is a3 / i2.

[0103] Then calculate the first change degree between n4 and (n3 / i2). The first change degree can be [n4 - (n3 / i2)] / (n3 / i2).

[0104] Similarly, the second degree of change of the current acceleration a3 and the reference acceleration a3 / i2 is:

[0105] [a4 - (a3 / i2)] / (a3 / i2).

[0106] In addition, the speed difference range can be calculated according to the speed ratios and transmission efficiencies of each level, that is, the first degree of change and the second degree of change are calculated.

[0107] S24. Take the component to be analyzed whose first degree of change or second degree of change meets the preset abnormal condition as the abnormal component.

[0108] In practical applications, the preset abnormal condition can be more than 5%. When the first degree of change exceeds 5% or the second degree of change exceeds 5%, it indicates that the actual value and the theoretical value of the transfer case differ greatly, that is, it indicates that there are abnormalities such as fracture and sliding wear in the transfer case.

[0109] Generally speaking, if the transfer case suddenly breaks during the vehicle's uniform running, the rotational speed may not change much in a short time, but the acceleration will change greatly. Therefore, in this embodiment, as long as one of the first degree of change and the second degree of change exceeds 5%, it is considered that there is an abnormality in the transfer case.

[0110] It should be noted that the abnormal components in this embodiment can be one or multiple.

[0111] In addition, in the above embodiment, the preset abnormal condition is directly set to be fixed, that is, more than 5%. In practical applications, under different operating conditions, the preset abnormal condition can be set differently to improve the accuracy of determining the preset abnormal condition.

[0112] Therefore, in this embodiment, the current operating condition is obtained. The current operating condition can be an uphill condition, a flat road driving condition, a turning condition, a downhill condition, etc. Among them, the uphill condition, the flat road driving condition, and the turning condition are non-downhill conditions. Under the uphill condition, the flat road driving condition, and the turning condition, the preset abnormal condition can be set to more than 5%. Under the downhill condition, due to the work done by gravity, the rotational speed on the wheel side increases. Considering the efficiency loss, a smaller preset abnormal condition can be set, such as set to exceed 2%. That is, among the preset abnormal conditions, the threshold value (2%) in the downhill condition is less than the threshold value (5%) in the non-downhill condition.

[0113] In this embodiment, based on the transmission connection relationship, the specified component corresponding to the component to be analyzed can be determined, and then based on the rotational speed and acceleration of the specified component and the speed ratio of the component to be analyzed, the reference rotational speed and reference acceleration of the component to be analyzed can be calculated to provide an analysis basis for whether the rotational speed and acceleration are abnormal.

[0114] In another implementation of the present invention, a specific implementation for analyzing the anomaly level is given. Specifically, based on the historical operating parameter information of the abnormal component, and / or, future operating parameter information, analyzing the anomaly level of the abnormal component may include:

[0115] 1) Obtain the historical operating parameter information of the abnormal component.

[0116] In this embodiment, the operating parameter information detected before the current detection moment is referred to as historical operating parameter information. Obtaining the historical operating parameter information is to determine the anomaly duration of the abnormal component and the change trends of the rotational speed and acceleration of the abnormal component.

[0117] 2) Based on the historical operating parameter information, determine whether the anomaly duration of the abnormal component is greater than a preset time threshold, and whether the change trend of the operating parameter information of the abnormal component is a preset abnormal change trend.

[0118] In practical applications, for the historical operating parameter information, an anomaly analysis result corresponding to each piece of historical operating parameter information can be determined. This anomaly analysis result is whether the first degree of change or the second degree of change meets the preset abnormal conditions. If so, it indicates that the historical operating parameter information detected this time is abnormal.

[0119] After performing anomaly analysis on all the historical operating parameter information, count the time with anomalies. For example, there were anomalies from 10:10 to 10:30 on January 20, 2024, and an anomaly at 10:15 on January 19, 2024.

[0120] If the anomaly time is a continuous period and continues until the current time, and the anomaly duration is greater than the preset time threshold, and the preset time threshold can be 1 hour, it indicates that this component has been abnormal, which means the anomaly level of this component is relatively high. If the anomaly duration is short, it may be caused by accidental factors, which means the anomaly level is relatively low.

[0121] In addition, in addition to analyzing the anomaly duration, the change trend of the operating parameter information can also be analyzed. If the change trend is a preset abnormal change trend, such as the gap is getting larger and larger, that is, the value of the first degree of change or the second degree of change is getting larger, it indicates that the damage degree of the component is getting larger, such as the sliding friction is getting more and more serious. At this time, the current anomaly level is very high.

[0122] If the change trend is not that the gap is getting larger and larger, it indicates that the damage degree of the component is not getting more and more serious, which means the current anomaly level is not very high.

[0123] 3) If the abnormal duration of the abnormal component is not greater than the preset time threshold, and the change trend of the operation parameter information of the abnormal component is not the preset abnormal change trend, detect the future operation parameter information of the abnormal component at the next moment.

[0124] If the abnormal duration of the abnormal component is not greater than the preset time threshold, and the change trend of the operation parameter information of the abnormal component is not the preset abnormal change trend, it indicates that the current abnormal level is not very high. At this time, it is necessary to determine whether this abnormality is an accidental situation and whether it will automatically return to normal in the future. Therefore, it is necessary to continuously record the speed and acceleration data and continuously perform data tracking and analysis to determine whether there is an abnormality in the future. Generally, in order to reduce the data processing volume and data processing efficiency, the future operation parameter information of the abnormal component at the next moment can be detected, that is, the speed and acceleration at the next moment are detected.

[0125] 4) If it is determined based on the future operation parameter information that the abnormal component has no abnormality at the next moment, determine the abnormal level of the abnormal component as the first abnormal level.

[0126] In practical applications, if it is determined based on the speed and acceleration at the next moment that the component has no abnormality at the next moment, that is, both the first change degree and the second change degree at the next moment do not exceed 5%, it indicates that the abnormality automatically recovers at the next moment, and it also indicates that this abnormality is an accidental event with a low abnormal level. Then set the abnormal level as the first abnormal level, and the first abnormal level is the lowest abnormal level. At this time, the green light can be used to display this abnormal level, and the vehicle can continue to drive normally.

[0127] 5) If it is determined based on the future operation parameter information that the abnormal component has an abnormality at the next moment, determine that the abnormal level of the abnormal component is switched from the first abnormal level to the second abnormal level.

[0128] Specifically, if it is determined based on the future operation parameter information that the abnormal component has an abnormality at the next moment, that is, the first change degree or the second change degree at the next moment exceeds 5%, it indicates that this abnormality is not an accidental event, that is, this abnormality is a bit serious, and the instrument light needs to report a yellow light fault, that is, control the instrument to report a yellow light alarm, and the abnormal level of the abnormal component is switched from the first abnormal level to the second abnormal level.

[0129] After the yellow light alarm, if the user performs corresponding maintenance manually, or enters a repair factory for maintenance to eliminate the fault, the vehicle can continue to drive.

[0130] If the fault is not eliminated after the yellow light alarm and becomes more and more serious, a red light fault needs to be reported later.

[0131] 6) If the abnormal duration of the abnormal component is greater than the preset time threshold, or the change trend of the operating parameter information of the abnormal component is the preset abnormal change trend, it is determined that the abnormal level of the abnormal component is switched from the second abnormal level to the third abnormal level.

[0132] Among them, the abnormal levels of the first abnormal level, the second abnormal level, and the third abnormal level increase gradually.

[0133] In the case of a yellow light fault, if the abnormal duration of the abnormal component is greater than the preset time threshold, or the change trend of the operating parameter information of the abnormal component is the preset abnormal change trend, it indicates that the current abnormal level is very high, and it is necessary to switch the abnormal level of the abnormal component from the second abnormal level to the third abnormal level, turn on the red light fault, and the instrument reports a red light alarm. To ensure the safety of vehicle driving, operations such as vehicle speed limit, active deceleration, or limp home are performed. The specific implementation refers to Figure 5 .

[0134] If the fault is eliminated subsequently, normal driving can continue. If the fault is not eliminated, when the vehicle is restarted after parking, the abnormal level of the abnormal component will be detected. In the case where the abnormal level of the abnormal component is the third abnormal level, a prohibited ignition instruction is sent to the igniter. Even if the igniter receives the user's ignition instruction, it will not respond to the instruction, that is, the vehicle startup is prohibited at this time. At the same time, a maintenance prompt message will be output, such as the instrument prompting the customer to enter the station for maintenance.

[0135] That is, after the abnormal level of the vehicle is relatively high, the vehicle startup will be prohibited subsequently, and corresponding maintenance prompts will be given, so that the user can discover the problem in time and perform maintenance to avoid affecting the subsequent use of the vehicle.

[0136] In this embodiment, multiple abnormal levels are set, so that when the vehicle is in different abnormal levels, the customer can be prompted, and when the abnormality is serious, the vehicle speed is limited, decelerated, or limp home to ensure the safety of people and vehicles to the greatest extent.

[0137] The above embodiment gives the determination of the abnormal level. After the abnormal level is determined, the vehicle actuator can be controlled to perform vehicle active safety operations and / or abnormal prompt operations according to the abnormal level of the abnormal component and the attribute information of the abnormal component.

[0138] Specifically, if the abnormal level of the abnormal component is the first abnormal level, the indicator light is controlled to display the first color for abnormal prompt operation. Among them, the first color is green, prompting the user that the current vehicle safety is relatively high.

[0139] If the abnormality level of the abnormal component is the second abnormality level, control the indicator light to display the second color for abnormal prompt operation, and output an abnormal prompt message. Among them, the second color is a yellow light, indicating that the fault is a bit serious. After the yellow light alarm, if the user performs corresponding maintenance manually or enters a repair shop for maintenance to eliminate the fault, the vehicle can continue to drive.

[0140] If the abnormality level of the abnormal component is the third abnormality level, obtain the attribute information of the abnormal component. Among them, the attribute information of the abnormal component can be the identifier of the abnormal component, and the identifier can be, for example, the component name (such as transmission, transfer case, etc.) or the label number (such as 1 for transmission, 2 for transfer case, etc.).

[0141] Then, based on the attribute information of the abnormal component, determine whether the abnormal component is a transmission.

[0142] In this embodiment, the transmission is analyzed separately because if the transmission fails, the transmission can only enter the limp-home driving state to protect the transmission. If other components fail, the transmission can perform gear shifting operations to decelerate the vehicle.

[0143] Specifically, if it is determined based on the attribute information of the abnormal component that the abnormal component is a transmission and the abnormality level of the transmission is the third abnormality level, that is, at this time, the abnormal component is the transmission and the abnormality level is very high, and the transmission cannot operate normally. At this time, in order to protect the transmission, the transmission will be controlled to enter the limp-home driving state. In addition, in order to avoid excessive vehicle speed resulting in the inability of the drive system to respond to a higher vehicle speed, the braking system will be controlled to decelerate. In addition, a speed limit method can also be adopted, such as limiting the maximum vehicle speed within 30 KM / H, to ensure the safety of people and vehicles to the greatest extent. In addition, the indicator light will also be controlled to display the third color for abnormal prompt operation, such as a red light failure and a red light alarm on the instrument panel.

[0144] If it is determined based on the attribute information of the abnormal component that the abnormal component is not a transmission and the abnormality level of the abnormal component is the third abnormality level, that is, at this time, the abnormal component is not a transmission, but the abnormality level is very high. At this time, the transmission can operate normally, then the transmission can be controlled to perform gear shifting operations. For driving safety, the gear can be directly switched to the first gear, or the gear can be gradually reduced to the first gear so that the vehicle runs in a lower gear. At the same time, control the braking system to decelerate, or adopt a speed limit method. In addition, the indicator light will also be controlled to display the third color for abnormal prompt operation, such as a red light failure and a red light alarm on the instrument panel.

[0145] In this embodiment, based on the judgment result of whether the abnormal component is a transmission, two active safety strategies are divided, so that in different scenarios, the corresponding active safety strategy can be selected to protect the vehicle and improve the safety of people and vehicles.

[0146] Refer to Figure 6 , Figure 6 which gives the device interaction diagram of the vehicle active safety control method in the present invention. Each rotational speed sensor transmits rotational speed signals (rotational speed value and rotational acceleration), and transmits them to the processor through the CAN (Controller Area Network) network. The processor determines whether the signals are abnormal. If there is no abnormality, the vehicle travels normally. If the signals are abnormal, according to the analysis results, signals are sent to each actuator. Specifically, the types and functions of the actuators are as follows:

[0147] Instrument display: alarm indicator light and warning message;

[0148] Transmission: receive signals and perform gear shifting operations or limp home;

[0149] Igniter: after the red light fault cannot be eliminated, prohibit the igniter from igniting;

[0150] Brake system: receive vehicle signals and actively start decelerating or speed limiting.

[0151] In summary, the overall processing flow of the present invention is as Figure 7 shown. During vehicle driving, obtain the vehicle powertrain, that is, the rotational speeds and rotational accelerations of each part in the transmission system. Determine whether there are abnormalities in the rotational speed signals and acceleration signals. For example, in the vehicle main computer, add an active monitoring function for vehicle safety. By monitoring the rotational speeds and rotational accelerations of each part at all levels of the transmission system, determine whether a fault occurs in the vehicle. If the floating difference of the rotational speed difference exceeds 5% and the floating difference of the acceleration exceeds 5%, it is an abnormal condition.

[0152] If there is no abnormality, the vehicle travels normally. If there is an abnormality, it is determined that there is a fault in the vehicle power system. Then analyze the abnormalities of the rotational speeds and accelerations in each link to determine the faulty parts. Based on the faulty parts and the changes in the rotational speed and acceleration signals (such as time or trend), determine the severity level of the fault (such as the first abnormal level, the second abnormal level, and the third abnormal level mentioned above), and execute the preset active safety strategy according to the severity level of the fault.

[0153] In addition, before obtaining the rotational speeds and rotational accelerations of each part, a data relationship can be established to obtain a fault database. The content of the data relationship can be as Figure 4 shown.

[0154] In this embodiment, by actively monitoring the rotational speed and acceleration response of components at all levels of the transmission system, calculating the speed difference range according to the speed ratios at all levels, that is, the first degree of change and the second degree of change. If the speed difference is too large, it indicates a delay in rotational acceleration or speed response. Then, it starts to analyze the faulty components, determine the fault level, and according to the fault level, execute the preset active safety strategy and abnormal prompt operation.

[0155] For those skilled in the art to better understand the specific implementation of the present invention, an example is given below.

[0156] 1. During the process of a user driving a vehicle by himself / herself, the vehicle controller continuously detects the rotational speed and acceleration of the engine, drive motor, transmission, transfer case, main reducer, and left and right wheels. It is found that the transmission has a fault and the fault degree is relatively serious, which is the third abnormal level. At this time, it will control the transmission to enter a limp-home driving state, then control the braking system to decelerate, decelerate to below 30 KM / H, and then turn on the red light alarm. After the user sees the red light alarm, gets out of the vehicle to check and finds that the transmission is faulty. At this time, the user calls for rescue to use the rescue vehicle to tow the vehicle to the repair station for repair.

[0157] 2. During the process of a user going out for a trip, the vehicle controller continuously detects the rotational speed and acceleration of the engine, drive motor, transmission, transfer case, main reducer, and left and right wheels. It is found that the drive motor has a fault and the fault degree is relatively light. At this time, it can turn on the yellow light for warning, and the user can slowly drive the vehicle to the repair station for repair.

[0158] Based on the above embodiments of the vehicle active safety control method, another embodiment of the present invention provides a vehicle active safety control device, referring to Figure 8 , including:

[0159] An information detection module 11, configured to detect the current operating parameter information of each component in the vehicle transmission system, where the current operating parameter information includes the current rotational speed and the current acceleration;

[0160] A component determination module 12, configured to determine an abnormal component from the various components based on the current operating parameter information;

[0161] A degree determination module 13, configured to analyze the abnormal level of the abnormal component according to the historical operating parameter information and / or future operating parameter information of the abnormal component;

[0162] An active safety execution module 14, configured to control a vehicle actuator to execute a vehicle active safety operation and / or an abnormal prompt operation according to the abnormal level of the abnormal component and the attribute information of the abnormal component.

[0163] In an optional implementation, the component determination module 12 includes:

[0164] A component determination sub-module, configured to sequentially use each component as a component to be analyzed according to the transmission link of the transmission system;

[0165] An information determination sub-module, configured to determine reference operating parameter information of the component to be analyzed, where the reference operating parameter information includes a reference rotational speed and a reference acceleration;

[0166] A degree calculation sub-module, configured to calculate a first change degree between the current rotational speed of the component to be analyzed and the reference rotational speed, and calculate a second change degree between the current acceleration of the component to be analyzed and the reference acceleration;

[0167] A component screening sub-module, configured to use the component to be analyzed whose first change degree or second change degree meets a preset abnormal condition as an abnormal component.

[0168] In an alternative implementation, the information determination sub-module is specifically configured to:

[0169] Determine the speed ratio of the component to be analyzed, and calculate the reference operating parameter information of the component to be analyzed according to the speed ratio of the component to be analyzed and the current operating parameter information of a specified component that has a transmission connection relationship with the component to be analyzed.

[0170] In an alternative implementation, it further includes:

[0171] A condition determination module, configured to obtain the current operating condition and determine a preset abnormal condition corresponding to the current operating condition. The current operating condition includes a downhill condition and a non-downhill condition. In the preset abnormal condition, the threshold value in the downhill condition is less than the threshold value in the non-downhill condition.

[0172] In an alternative implementation, the degree determination module 13 includes:

[0173] An information acquisition sub-module, configured to acquire historical operating parameter information of the abnormal component;

[0174] A judgment sub-module, configured to judge, based on the historical operating parameter information, whether the abnormal duration of the abnormal component is greater than a preset time threshold, and whether the change trend of the operating parameter information of the abnormal component is a preset abnormal change trend;

[0175] An information detection sub-module, configured to detect the future operating parameter information of the abnormal component at the next moment if the abnormal duration of the abnormal component is not greater than the preset time threshold and the change trend of the operating parameter information of the abnormal component is not the preset abnormal change trend;

[0176] The first determination sub-module is configured to determine that the abnormal level of the abnormal component is the first abnormal level if it is determined based on the future operating parameter information that the abnormal component is not abnormal at the next moment;

[0177] The second determination sub-module is configured to determine that the abnormal level of the abnormal component is switched from the first abnormal level to the second abnormal level if it is determined based on the future operating parameter information that the abnormal component is abnormal at the next moment.

[0178] In an alternative implementation, the degree determination module 13 further includes:

[0179] The third determination sub-module is configured to determine that the abnormal level of the abnormal component is switched from the second abnormal level to the third abnormal level if the abnormal duration of the abnormal component is greater than a preset time threshold, or the change trend of the operating parameter information of the abnormal component is a preset abnormal change trend;

[0180] The abnormal levels of the first abnormal level, the second abnormal level, and the third abnormal level increase gradually.

[0181] In an alternative implementation, the active safety execution module 14 includes:

[0182] The first execution sub-module, if the abnormal level of the abnormal component is the first abnormal level, controls the indicator light to display the first color for abnormal prompt operation; if the abnormal level of the abnormal component is the second abnormal level, controls the indicator light to display the second color for abnormal prompt operation, and outputs an abnormal prompt message;

[0183] The attribute acquisition sub-module is configured to acquire the attribute information of the abnormal component if the abnormal level of the abnormal component is the third abnormal level;

[0184] The attribute judgment sub-module is configured to judge whether the abnormal component is a transmission based on the attribute information of the abnormal component;

[0185] The second execution sub-module is configured to, if so, control the transmission to enter a limp-home driving state, control the braking system to decelerate, and control the indicator light to display the third color for abnormal prompt operation; if not, control the transmission to perform a gear shifting operation, control the braking system to decelerate, and control the indicator light to display the third color for abnormal prompt operation.

[0186] In an alternative implementation, it further includes:

[0187] The restart control module is configured to, if it is detected that the vehicle is restarted after the vehicle stops, and in the case that the abnormal level of the abnormal component is the third abnormal level, send a prohibited ignition instruction to the igniter; output a maintenance prompt message.

[0188] In this embodiment, abnormal components can be determined from each component according to the current operating parameter information of the components in the drive system, and then the abnormal level of the abnormal components is analyzed. Then, according to the abnormal level of the abnormal components and the attribute information of the abnormal components, the vehicle actuator is controlled to perform vehicle active safety operations, so as to reduce the impact degree of the abnormal components on the safe driving of the vehicle and ensure the safe driving of the vehicle. In addition, the user can be prompted through abnormal prompt operations, so that the user can perform vehicle maintenance operations in time to ensure vehicle safety.

[0189] It should be noted that for the working processes of each module and sub-module in this embodiment, please refer to the corresponding descriptions in the above embodiments, and will not be elaborated here.

[0190] An electronic device is also provided in an embodiment of the present application. Refer to Figure 9 As shown, it shows a schematic structural diagram of an electronic device suitable for implementing the electronic device in the embodiment of the present application. The electronic device in the embodiment of the present application may include, but is not limited to, fixed terminals such as mobile phones, laptop computers, PDAs (Personal Digital Assistants), PADs (Tablet Computers), desktop computers, and the like. Figure 9 The shown electronic device is only an example and should not bring any limitation to the functions and usage scopes of the embodiments of the present application.

[0191] As Figure 9 shown, the electronic device may include a processing device (such as a central processing unit, a graphics processing unit, etc.) 601, which can perform various appropriate actions and processes according to the program stored in the read-only memory (ROM) 602 or the program loaded from the storage device 608 into the random access memory (RAM) 603, so as to implement the above-mentioned vehicle active safety control method. When the electronic device is powered on, various programs and data required for the operation of the electronic device are also stored in the RAM 603. The processing device 601, the ROM 602, and the RAM 603 are connected to each other through a bus 604. The input / output (I / O) interface 605 is also connected to the bus 604.

[0192] Generally, the following devices may be connected to the I / O interface 605: an input device 606 including, for example, a touch screen, a touchpad, a keyboard, a mouse, a camera, a microphone, an accelerometer, a gyroscope, etc.; an output device 607 including, for example, a liquid crystal display (LCD), a speaker, a vibrator, etc.; a storage device 608 including, for example, a memory card, a hard disk, etc.; and a communication device 609. The communication device 609 can allow the electronic device to communicate with other devices wirelessly or wiredly to exchange data. Although Figure 9An electronic device having various devices is shown, but it should be understood that it is not required to implement or have all the shown devices. Instead, more or fewer devices may be implemented or had.

[0193] An embodiment of the present application also provides a computer program product including computer-readable instructions that, when run on an electronic device, cause the electronic device to implement any one of the vehicle active safety control methods provided by the embodiments of the present application.

[0194] An embodiment of the present application also provides a computer-readable storage medium that carries one or more computer programs, and when the one or more computer programs are executed by an electronic device, can cause the electronic device to implement any one of the vehicle active safety control methods provided by the embodiments of the present application.

[0195] An embodiment of the present application also provides a vehicle including a device for executing the above-mentioned vehicle active safety control method.

[0196] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A vehicle active safety control method, characterized in that: include: Detecting current operating parameter information of each component in the vehicle transmission system, wherein the current operating parameter information includes current rotation speed and current acceleration; Based on the current operating parameter information, determining abnormal components from the various components; Analyzing the abnormality level of the abnormal component according to the historical operating parameter information and / or the future operating parameter information of the abnormal component; Controlling the vehicle actuator to perform vehicle active safety operations and / or abnormality prompt operations according to the abnormality level of the abnormal component and the attribute information of the abnormal component; Wherein, based on the current operating parameter information, determining abnormal components from the various components includes: According to the transmission link of the transmission system, each component is taken as the component to be analyzed in turn; Determining reference operating parameter information of the component to be analyzed, wherein the reference operating parameter information includes a reference rotation speed and a reference acceleration; Calculating a first degree of change between a current rotation speed of the component to be analyzed and the reference rotation speed, and calculating a second degree of change between a current acceleration of the component to be analyzed and the reference acceleration; The component to be analyzed whose first change degree or the second change degree meets the preset abnormal condition is regarded as an abnormal component.

2. The vehicle active safety control method according to claim 1, characterized in that: Determining reference operating parameter information of the component to be analyzed includes: Determining the speed ratio of the component to be analyzed; The reference operating parameter information of the component to be analyzed is calculated according to the speed ratio of the component to be analyzed and the current operating parameter information of a designated component having a transmission connection relationship with the component to be analyzed.

3. The vehicle active safety control method according to claim 2, characterized in that: The process of determining the preset abnormal condition includes: Acquire the current operating condition; the current operating condition includes a downhill condition and a non-downhill condition; Determine a preset abnormal condition corresponding to the current operating condition; wherein, in the preset abnormal condition, a threshold value in the downhill condition is less than a threshold value in the non-downhill condition.

4. The vehicle active safety control method according to claim 1, characterized in that: Analyzing the abnormality level of the abnormal component according to the historical operating parameter information and / or the future operating parameter information of the abnormal component includes: Obtaining historical operating parameter information of the abnormal component; Based on the historical operating parameter information, determine whether the abnormal duration of the abnormal component is greater than a preset time threshold, and whether the change trend of the operating parameter information of the abnormal component is a preset abnormal change trend; If the abnormal duration of the abnormal component is not greater than the preset time threshold, and the change trend of the operating parameter information of the abnormal component is not the preset abnormal change trend, detecting the future operating parameter information of the abnormal component at the next moment; If it is determined based on the future operation parameter information that the abnormal component does not have an abnormality at the next moment, determining the abnormality level of the abnormal component to be the first abnormality level; If it is determined based on the future operation parameter information that the abnormal component is abnormal at the next moment, it is determined that the abnormal level of the abnormal component is switched from the first abnormal level to the second abnormal level.

5. The vehicle active safety control method according to claim 4, characterized in that: Also includes: If the abnormal duration of the abnormal component is greater than a preset time threshold, or the change trend of the operating parameter information of the abnormal component is a preset abnormal change trend, it is determined that the abnormal level of the abnormal component is switched from the second abnormal level to the third abnormal level; The abnormality levels of the first abnormality level, the second abnormality level, and the third abnormality level gradually increase.

6. The vehicle active safety control method according to claim 4, characterized in that: According to the abnormality level of the abnormal component and the attribute information of the abnormal component, controlling the vehicle actuator to perform vehicle active safety operation and / or abnormal prompt operation includes: If the abnormal level of the abnormal component is the first abnormal level, the control indicator light is displayed in a first color to perform an abnormal prompt operation; If the abnormality level of the abnormal component is the second abnormality level, controlling the indicator light to display a second color to perform an abnormality prompt operation, and outputting abnormality prompt information; If the abnormality level of the abnormal component is the third abnormality level, obtaining attribute information of the abnormal component; determining whether the abnormal component is a transmission based on the attribute information of the abnormal component; If yes, control the transmission to enter a limp-running state, control the brake system to decelerate, and control the indicator light to display a third color to perform an abnormality prompt operation; If not, the transmission is controlled to perform a gear shift operation, the brake system is controlled to decelerate, and the indicator light is controlled to display a third color to perform an abnormal prompt operation.

7. The vehicle active safety control method according to claim 6, characterized in that: Also includes: If it is detected that the vehicle is started again after the vehicle is stopped, when the abnormality level of the abnormal component is the third abnormality level, sending an ignition prohibition command to the igniter; Output maintenance reminder information.

8. A vehicle active safety control device, characterized in that: include: An information detection module, used to detect current operating parameter information of each component in the vehicle transmission system, wherein the current operating parameter information includes current rotation speed and current acceleration; A component determination module, configured to determine abnormal components from among the components based on the current operating parameter information; A degree determination module, configured to analyze the abnormality level of the abnormal component according to the historical operating parameter information of the abnormal component and / or the future operating parameter information; An active safety execution module, used to control a vehicle actuator to execute a vehicle active safety operation and / or an abnormality prompt operation according to the abnormality level of the abnormal component and the attribute information of the abnormal component; The component determination module is used to determine abnormal components from the various components based on the current operating parameter information, including: According to the transmission link of the transmission system, each component is taken as the component to be analyzed in turn; Determining reference operating parameter information of the component to be analyzed, wherein the reference operating parameter information includes a reference rotation speed and a reference acceleration; Calculating a first degree of change between a current rotation speed of the component to be analyzed and the reference rotation speed, and calculating a second degree of change between a current acceleration of the component to be analyzed and the reference acceleration; The component to be analyzed whose first change degree or the second change degree meets the preset abnormal condition is regarded as an abnormal component.

9. A vehicle, characterized in that: The invention comprises a device for executing the vehicle active safety control method as claimed in any one of claims 1 to 7.

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