Vehicle overload control method and device

Abstract

The present application provides a method and device for controlling vehicle overload, which is applied to the field of vehicle overload detection technology. The method includes: matching the first loading mass of the vehicle according to a comparison result, and when the first loading mass is less than a preset overload mass, calculating the second loading mass of the vehicle based on the acceleration signal of the loaded vehicle and the actual driving resistance; obtaining the actual loading mass of the vehicle according to the first loading mass and the corresponding first weight and the second loading mass and the corresponding second weight, and controlling the vehicle to execute a preset safety strategy when the actual loading mass is greater than the preset overload mass. The embodiment of the present application combines the static loading mass obtained by vehicle height and the dynamic loading mass obtained by running resistance fitting to accurately detect the actual loading mass of the vehicle, thereby limiting the speed of the vehicle when it is overloaded, improving the accuracy of detection, and proposing a means of actively curbing overloading behavior, thereby improving the safety of the vehicle and effectively meeting the use requirements.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle overload detection, and more specifically, to a method and device for controlling vehicle overload in the technical field of vehicle overload detection. Background Art

[0002] Overloading means that the actual load of a transportation vehicle exceeds the approved maximum allowable limit. Vehicle overloading has many hazards. It not only affects the road surface and damages the roadbed, but more importantly, there are major hidden dangers to vehicle driving safety. Due to the increase in inertia, once the vehicle encounters an emergency, the vehicle's braking system will not be able to stop quickly, resulting in serious traffic accidents.

[0003] In the related art, the vehicle's loading mass is generally calculated based on the vehicle's body height data, and then the loading mass is compared with the maximum loading mass corresponding to the vehicle. Once the loading mass exceeds the maximum loading mass, the vehicle is considered to be overloaded.

[0004] However, in related technologies, the vehicle height data fluctuates greatly, resulting in low accuracy and large errors in determining the loading mass based on the vehicle height data. Moreover, the detection is limited to the static state, which cannot effectively curb overloading behavior and cannot meet usage requirements. Summary of the Invention

[0005] The present application provides a method and device for controlling vehicle overload. The method can accurately detect the actual load mass of the vehicle by combining the static load mass obtained by vehicle body height and the dynamic load mass obtained by running resistance fitting, thereby limiting the speed of the vehicle when it is overloaded, improving the accuracy of detection, and proposing means to actively curb overloading behavior, thereby improving vehicle safety and effectively meeting usage requirements.

[0006] In a first aspect, a method for controlling vehicle overload is provided, the method comprising:

[0007] Collect the actual vehicle height after loading;

[0008] comparing the actual vehicle height with a reference vehicle height of an unladen vehicle, matching a first laden mass of the vehicle based on the comparison result, and calculating a second laden mass of the vehicle based on an acceleration signal of the laden vehicle and an actual driving resistance when the first laden mass is less than a preset overload mass;

[0009] The actual loading mass of the vehicle is obtained according to the first loading mass and the corresponding first weight and the second loading mass and the corresponding second weight, and when the actual loading mass is greater than the preset overload mass, the vehicle is controlled to execute a preset safety strategy.

[0010] Through the above technical solution, the actual body height of the vehicle after loading can be collected to obtain the static loading mass, which provides support for subsequent comparison with the reference body height of the vehicle without cargo. Combined with the dynamic loading mass after driving, the actual loading mass can be accurately obtained. Once overloaded, the vehicle is controlled to execute certain safety strategies, which is conducive to accurately detecting the actual loading mass of the vehicle, improving the accuracy of detection, and improving the safety of the vehicle, effectively meeting usage needs.

[0011] In conjunction with the first aspect, in some possible implementations, controlling the vehicle to execute a preset safety policy includes:

[0012] The speed of the vehicle is limited to a preset safe speed.

[0013] Through the above technical solution, the vehicle speed can be limited to a certain safe speed, thereby improving the safety of the vehicle.

[0014] In combination with the first aspect and the above implementations, in some possible implementations, controlling the vehicle to execute the preset safety policy includes:

[0015] Calculating the difference between the actual loaded mass and the preset overload mass;

[0016] An optimal prompt action for overload prompting is matched based on the difference, and the vehicle is controlled to execute the optimal prompt action. After completing the optimal prompt action, it is determined whether the vehicle meets the preset safety policy execution conditions; if the preset safety policy execution conditions are met, the vehicle speed is limited to the preset safety speed.

[0017] Through the above technical solution, the difference between the actual loading mass and a certain overload mass can be calculated to ensure the improvement of detection accuracy. The optimal prompt action for overload prompt is matched according to the difference. After the optimal prompt action is completed, it is judged whether the vehicle meets certain safety strategy execution conditions. When certain safety strategy execution conditions are met, the vehicle speed can be limited to a certain safe speed, thereby ensuring the safety of the vehicle.

[0018] In combination with the first aspect and the above implementations, in some possible implementations, before calculating the second loading mass of the vehicle, the method further includes:

[0019] The actual driving resistance is calculated according to the combined resistance of the vehicle and the current slope resistance, wherein the combined resistance is obtained by fitting the road resistance with the rotating hub.

[0020] Through the above technical solution, the calculation accuracy of driving resistance can be improved. Without increasing the vehicle configuration, the static loading mass obtained by combining the vehicle body height and the dynamic loading mass obtained by driving resistance fitting can be ensured in both dynamic and static states to accurately detect the actual loading mass of the vehicle. While improving the accuracy of detection, the safety of the vehicle is improved to further meet the usage requirements.

[0021] In combination with the first aspect and the above implementations, in some possible implementations, before obtaining the actual loading mass of the vehicle, the method further includes:

[0022] Obtaining a stationary time of the vehicle corresponding to the first loading mass, and obtaining a driving time of the vehicle corresponding to the second loading mass;

[0023] The resting time and the driving time are compared, and the first weight and the second weight are determined according to the comparison result.

[0024] Through the above technical solution, by obtaining the stationary time of the vehicle corresponding to the first loading mass and the driving time of the vehicle corresponding to the second loading mass, support can be provided for comparing the stationary time of the vehicle and the driving time of the vehicle. The first weight and the second weight are determined according to the comparison results, which facilitates improving the accuracy of detection and enhances the intelligence of vehicle overload control.

[0025] In combination with the first aspect and the above implementation manner, in some possible implementation manners, after matching the first loading mass of the vehicle according to the comparison result, the method further includes:

[0026] detecting whether the first loading mass is greater than or equal to the preset overload mass;

[0027] When it is detected that the first loading mass is greater than or equal to the preset overload mass, the vehicle is prohibited from starting and an overload danger warning is issued to the driver.

[0028] Through the above technical solution, when it is detected that the first loading mass is greater than or equal to a certain overload mass, that is, when overloading is determined in a static state, there is no need for dynamic review, and the vehicle is directly prohibited from starting to avoid overloaded driving behavior. Overload danger warnings can be issued through, but are not limited to, acoustic and / or optical reminders, thereby stopping overloading behavior and effectively avoiding overloading.

[0029] In combination with the first aspect and the above implementations, in some possible implementations, the overload hazard warning to the driver includes:

[0030] Calculating a safety difference between the first loading mass and the preset overload mass;

[0031] An optimal reminder action for overload hazard warning is matched according to the safety difference, and the vehicle is controlled to execute the optimal reminder action.

[0032] Through the above technical solution, the safety difference between the first loading mass and a certain overload mass can be calculated to ensure the improvement of detection accuracy. The optimal reminder action for overload danger warning is matched according to the safety difference, and the vehicle is controlled to perform the optimal reminder action. Means of actively curbing overloading behavior are proposed to improve the safety of the vehicle and effectively meet usage needs.

[0033] In a second aspect, a vehicle overload control device is provided, the device comprising:

[0034] A collection module is used to collect the actual height of the vehicle after loading;

[0035] a processing module, configured to compare the actual vehicle height with a reference vehicle height of an unladen vehicle, match a first laden mass of the vehicle based on the comparison result, and, when the first laden mass is less than a preset overload mass, calculate a second laden mass of the vehicle based on an acceleration signal of the laden vehicle and an actual driving resistance;

[0036] A control module is used to obtain the actual loading mass of the vehicle based on the first loading mass and the corresponding first weight and the second loading mass and the corresponding second weight, and control the vehicle to execute a preset safety strategy when the actual loading mass is greater than the preset overload mass.

[0037] With reference to the second aspect, in some possible implementations, the control module includes:

[0038] The first limiting unit is configured to limit the speed of the vehicle to a preset safe speed.

[0039] In combination with the second aspect and the above implementations, in some possible implementations, the control module includes:

[0040] a first calculating unit, configured to calculate a difference between the actual loaded mass and the preset overload mass;

[0041] a matching unit, configured to match an optimal prompt action for overload prompting based on the difference, control the vehicle to execute the optimal prompt action, and, after completing the optimal prompt action, determine whether the vehicle satisfies a preset safety policy execution condition;

[0042] The second limiting unit is configured to limit the speed of the vehicle to within the preset safety speed when the preset safety policy execution condition is met.

[0043] In combination with the second aspect and the above implementations, in some possible implementations, the present invention further includes:

[0044] A calculation module is used to calculate the actual driving resistance according to the combined resistance of the vehicle and the current slope resistance before calculating the second loading mass of the vehicle, wherein the combined resistance is obtained by fitting the road resistance with the hub.

[0045] In combination with the second aspect and the above implementations, in some possible implementations, the present invention further includes:

[0046] an acquisition module, configured to acquire, before obtaining the actual loading mass of the vehicle, a stationary time of the vehicle corresponding to the first loading mass and a driving time of the vehicle corresponding to the second loading mass;

[0047] A comparison module is used to compare the resting time and the driving time, and determine the first weight and the second weight according to the comparison result.

[0048] In combination with the second aspect and the above implementations, in some possible implementations, the present invention further includes:

[0049] a detection module, configured to detect whether the first loading mass is greater than or equal to the preset overload mass after matching the first loading mass of the vehicle according to the comparison result;

[0050] The warning module is used to prohibit the vehicle from starting and warn the driver of the overloading danger when it is detected that the first loading mass is greater than or equal to the preset overload mass.

[0051] In combination with the second aspect and the above implementation, in some possible implementations, the warning module includes:

[0052] a second calculation unit, configured to calculate a safety difference between the first loading mass and the preset overload mass;

[0053] A reminder unit is used to match an optimal reminder action for overload hazard warning according to the safety difference, and control the vehicle to execute the optimal reminder action.

[0054] In a third aspect, a vehicle is provided, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the vehicle overload control method as described in the above embodiment.

[0055] In a fourth aspect, a computer-readable storage medium is provided, which stores a computer program code. When the computer program code runs on a computer, the computer executes the vehicle overload control method in the above-mentioned first aspect or any possible implementation of the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Figure 1 A schematic diagram of the installation position of a vehicle front suspension height sensor for the vehicle overload control method according to an embodiment of the present application;

[0057] Figure 2 A schematic diagram of the installation position of a vehicle rear suspension height sensor for the vehicle overload control method according to an embodiment of the present application;

[0058] Figure 3 This is a flow chart of the vehicle overload control method according to an embodiment of the present application;

[0059] Figure 4 This is a schematic structural diagram of a vehicle overload control device according to an embodiment of the present application;

[0060] Figure 5 This is a schematic structural diagram of the vehicle described in an embodiment of the present application. DETAILED DESCRIPTION

[0061] The following will clearly and thoroughly describe the technical solutions in this application in conjunction with the accompanying drawings. In the description of the embodiments of this application, unless otherwise specified, " / " means or, for example, A / B can mean A or B: "and / or" in the text is only a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of this application, "multiple" means two or more than two.

[0062] In the following, the terms "first" and "second" are used for descriptive purposes only and should not be understood to imply or suggest relative importance or implicitly indicate the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0063] Traditional vehicle overload control systems can only obtain the vehicle body height and compare the loaded mass with the vehicle's maximum load mass to determine the overload. This method is simple and produces large errors, making it unable to effectively curb overloading behavior.

[0064] Next, the application scenario or system architecture of the embodiment of the present application will be described. Figure 1 and Figure 2 .

[0065] Generally, first, a vehicle height sensor is installed on each of the front and rear suspensions of the vehicle. Figure 1 Schematic diagram of the installation position of the vehicle front suspension body height sensor 10, Figure 2 This is a schematic diagram of the installation position of the vehicle's rear suspension vehicle height sensor 20. Each time the vehicle is powered on, the front and rear vehicle height sensors are reset to zero and the voltage signal output by the sensors is sent to the CAN (Controller Area Network) line. Secondly, the average output voltage of the front and rear vehicle height sensors (e.g., the voltage range is 0.35-4.75V) and the loaded mass (e.g., unladen mass is 3000kg, fully laden mass is 3400kg). The corresponding relationship is shown in the following table. This part requires calibration. Table 1 is a comparison table of output voltage and mass, where, as shown in Table 1:

[0066] Table 1

[0067]

[0068] Before explaining the vehicle overload control method provided in the embodiment of the present application, the overload sensor structure designed in the embodiment of the present application is first explained.

[0069] Figure 3 This is a flowchart of a vehicle overload control method provided according to an embodiment of the present application.

[0070] like Figure 3 As shown, the method includes the following steps:

[0071] In step S301 : the actual vehicle height of the loaded vehicle is collected.

[0072] During the actual implementation process, the implementation of this application can be but is not limited to collecting the actual body height of the vehicle after loading through the body height sensor, providing support for subsequent comparison with the reference body height of the vehicle without cargo, thereby facilitating the accurate detection of the actual loading mass of the vehicle, improving the accuracy of the detection, and improving the safety of the vehicle, effectively meeting the usage requirements.

[0073] In step S302, the actual vehicle body height is compared with the reference vehicle body height of the unladen vehicle, and the first loading mass of the vehicle is matched according to the comparison result. When the first loading mass is less than the preset overload mass, the second loading mass of the vehicle is calculated based on the acceleration signal of the loaded vehicle and the actual driving resistance.

[0074] It is understood that embodiments of the present application can perform static detection of the loaded mass. For example, if a vehicle is equipped with a vehicle height sensor, it can be understood that when the loaded mass changes, the vehicle's center of mass height drops and the suspension arm position changes, thereby causing the output voltage of the vehicle height sensor to change. Therefore, as shown in Table 1 above, by calibrating the relationship between the two front and rear height sensors of the vehicle (the output voltage information of the vehicle height sensor) and the loaded mass (such as using an output voltage and mass comparison table), the vehicle's loaded mass can be accurately obtained. Embodiments of the present application can use the output voltage values ​​of the two front and rear vehicle height sensors and the linear difference to perform a table lookup, thereby comparing the actual vehicle height with the reference vehicle height of an unladen vehicle, and matching the vehicle's first loaded mass based on the comparison result. No specific limitations are imposed herein.

[0075] During the actual implementation process, when the vehicle is powered on, the first loading mass detected by static detection can be obtained. If the first loading mass is not detected normally during the process of starting and driving, after the vehicle starts, the change in suspension height is not only related to the mass, but also due to various factors such as the vehicle's driving speed, acceleration and road bumps, resulting in inaccurate loading mass reflected by the information obtained by the vehicle height sensor. At this time, the second loading mass can be calculated through a dynamic detection scheme. When the first loading mass is less than a certain overload mass, the second loading mass of the vehicle is calculated based on the acceleration signal of the vehicle after loading and the actual driving resistance.

[0076] The embodiment of the present application can obtain the static loading mass of the vehicle, that is, the loading mass in a stationary state is obtained based on the height of the vehicle body. However, taking into account the situation where there is an error in the static loading mass, the dynamic loading mass is obtained and reviewed in combination with various factors such as the vehicle's driving speed, acceleration and road bumps to obtain an accurate actual loading mass. This ensures that when it is uncertain whether the first loading mass is really less than the overload mass, the second loading mass of the vehicle is obtained through a dynamic detection scheme. Once the vehicle is really overloaded, the safety strategy is executed to accurately detect the loading mass, thereby improving the accuracy of the detection, avoiding overloaded vehicles on the road, ensuring the safety of the driver's driving, and improving the intelligence of vehicle overload control.

[0077] It should be noted that the preset overload mass can be set by those skilled in the art according to actual conditions and is not specifically limited here.

[0078] Optionally, in one embodiment of the present application, before calculating the second loading mass of the vehicle, it also includes: calculating the actual driving resistance based on the combined resistance of the vehicle and the current slope resistance, wherein the combined resistance is obtained by fitting the road resistance with the rotating hub.

[0079] It is understandable that there are many uncalculated resistances during the actual road driving of a vehicle, and the basic force calculation is less accurate under some working conditions. Therefore, in order to improve the calculation accuracy, the embodiment of the present application can optimize the vehicle driving resistance calculation part. For the unpredictable resistance during vehicle driving, especially for each separate part of the resistance calculation, the error in the calculated total resistance will be greater. At this time, the driving resistance fitting method can be used to simulate the final total resistance as a quadratic equation, thereby improving the dynamic calculation accuracy of the effective driving resistance.

[0080] Specifically, the embodiment of the present application can calculate the actual driving resistance based on the vehicle's combined resistance and the current slope resistance, wherein the combined resistance can be obtained by fitting the road resistance by the hub.

[0081] The general resistance calculation formula is:

[0082] F 合阻力 =F f + w +F j ,

[0083] The rolling resistance calculation formula is:

[0084] F f =m*g*f*cosα,

[0085] The formula for calculating air resistance is:

[0086] Fw=1 / 2*CDAρv 2 ,

[0087] The slope resistance calculation formula is:

[0088] F i =m*g*sinα,

[0089] The calculation formula for acceleration resistance is:

[0090] F j =δ*m*a,

[0091]

[0092] Since the rolling resistance coefficient f is related to the vehicle speed v, it can be fitted into the formula:

[0093] F 合阻力 =A+B*v+C*v 2 ,

[0094] F 合阻力 It can be obtained by fitting the road resistance through laboratory rotation, with high accuracy.

[0095] The total driving resistance of the vehicle in the embodiment of the present application can be obtained as follows:

[0096] F 总阻力 =F 合阻力 +F i ,

[0097] The embodiments of the present application can improve the calculation accuracy of driving resistance. Without increasing the vehicle configuration, it can ensure that the static loading mass obtained by combining the vehicle body height and the dynamic loading mass obtained by driving resistance fitting in both dynamic and static states, accurately detect the actual loading mass of the vehicle, improve the accuracy of detection, and at the same time improve the safety of the vehicle, further meeting the usage requirements.

[0098] Optionally, in one embodiment of the present application, before obtaining the actual loading mass of the vehicle, it also includes: obtaining the stationary time of the vehicle corresponding to the first loading mass, and obtaining the driving time of the vehicle corresponding to the second loading mass; comparing the stationary time and the driving time, and determining the first weight and the second weight based on the comparison result.

[0099] It can be understood that the vehicle's stationary time and driving time in the embodiment of the present application can affect the weight when the vehicle's actual loading mass is obtained, wherein the first weight and the second weight can represent the relative importance of the stationary time and the driving time in obtaining the vehicle's actual loading mass.

[0100] During the actual implementation process, the embodiments of the present application can, but are not limited to, obtain the stationary time of the vehicle corresponding to the first loading mass and the driving time of the vehicle corresponding to the second loading mass through calculation, thereby providing support for the subsequent comparison of the stationary time of the vehicle and the driving time of the vehicle. By comparing the stationary time of the vehicle and the driving time of the vehicle, and determining the first weight and the second weight according to the comparison results, it is convenient to improve the accuracy of detection and enhance the intelligence of vehicle overload control.

[0101] For example, in the embodiment of the present application, the stationary time may be, but not limited to, 3 minutes, and the driving time may be, but not limited to, 2 minutes. When the stationary time is long, and the stationary time is greater than the driving time, and the quality change trend is reasonable, it can be determined based on the comparison results that the first weight is obtained from the stationary time, the second weight is obtained from the driving time, and the first weight is greater than the second weight. For another example, in the embodiment of the present application, the stationary time may be, but not limited to, 3 minutes, and the driving time may be, but not limited to, 4 minutes. When the driving time is long, and the driving time is greater than the stationary time, and the vehicle is driving smoothly after operation, it can be determined based on the comparison results that the first weight is obtained from the driving time, the second weight is obtained from the stationary time, and the first weight is greater than the second weight. In other words, if the stationary time is greater than the driving time, it indicates that the accuracy of static detection is higher. Conversely, if the stationary time is less than the driving time, it indicates that the accuracy of dynamic detection is higher.

[0102] Optionally, in one embodiment of the present application, after matching the first loading mass of the vehicle according to the comparison result, it also includes: detecting whether the first loading mass is greater than or equal to the preset overload mass; when it is detected that the first loading mass is greater than or equal to the preset overload mass, prohibiting the vehicle from starting and issuing an overload hazard warning to the driver.

[0103] It is understandable that in the absence of weighing equipment, the driver may not be able to accurately estimate the mass of the cargo, and it is easy to cause unintentional overloading when loading non-standard cargo, resulting in the truck being overloaded on the road. Therefore, the overload danger warning method in the embodiment of the present application can prohibit the vehicle from starting when it is detected that the first load mass is greater than a certain overload mass, and can provide the driver with an overload danger warning through but not limited to acoustic and / or optical reminders, thereby correcting the driver's overloading behavior and effectively avoiding overloading.

[0104] Specifically, when the vehicle is determined to be overloaded based on the vehicle body height without the need for dynamic loading mass review, the embodiment of the present application can directly prohibit the vehicle from starting, without the need to calculate the second loading mass of the vehicle based on the acceleration signal and the actual driving resistance, thereby effectively ensuring the reliability of the control, avoiding redundant operations, and being simple and reliable.

[0105] As a possible implementation method, the embodiment of the present application can detect whether the first loading mass is greater than or equal to a certain overload mass after obtaining the first loading mass of the static detection. When it is detected that the first loading mass is greater than or equal to the certain overload mass, that is, when the overload is determined in the static state, there is no need for dynamic review, and the vehicle is directly prohibited from starting to avoid overload driving behavior. There is no need to calculate the second loading mass of the vehicle based on the acceleration signal and the actual driving resistance, and the driver is warned of the danger of overload, thereby improving the safety of the vehicle by actively curbing overload behavior.

[0106] For example, in the embodiment of the present application, the first load mass is 2000 kg and the overload mass is 1950 kg. When it is detected that the first load mass is greater than a certain overload mass, that is, when the overload is determined in a static state, no dynamic review is required, and the vehicle is directly prohibited from starting. An acoustic reminder method, which may be but not limited to a stereo loudspeaker, a buzzer, etc., is used to emit a warning sound, thereby performing an acoustic overload hazard warning. For another example, in the embodiment of the present application, the first load mass is 2000 kg and the overload mass is 2000 kg. When the embodiment of the present application detects that the first load mass is equal to the certain overload mass, the vehicle is determined to be overloaded. At this time, the vehicle can be prohibited from starting, and an optical reminder method, such as flashing lights on the instrument panel or lighting up a hazard sign, is used to perform an optical overload hazard warning. For another example, in the embodiment of the present application, when it is detected that the first load mass is greater than or equal to a certain overload mass, that is, when the overload is determined in a static state, no dynamic review is required, and the vehicle is directly prohibited from starting. A combined acoustic and optical reminder method is used, such as the vehicle emits a warning sound and flashes lights on the instrument panel or lighting up a hazard sign, to perform an optical overload hazard warning. For another example, in the embodiment of the present application, the first loading mass is 1950 kg and the overload mass is 2000 kg. Although it is not overloaded, in order to avoid errors, the dynamic loading mass is further calculated after the vehicle starts to move, so as to calculate the actual loading mass of the vehicle. When the actual loading mass does not exceed 2000 kg, there is no need to execute the safety strategy.

[0107] It should be noted that the preset overload mass can be set by those skilled in the art according to actual conditions and is not specifically limited here.

[0108] Optionally, in one embodiment of the present application, an overload hazard warning is provided to the driver, including: calculating a safety difference between a first loading mass and a preset overload mass; matching an optimal reminder action for overload hazard warning according to the safety difference, and controlling the vehicle to perform the optimal reminder action.

[0109] It is understandable that the optimal reminder action in the embodiment of the present application may be, but is not limited to, continuously displaying the vehicle overload status through the instrument.

[0110] During the actual implementation process, the embodiment of the present application can calculate the safety difference between the first loading mass and a certain overload mass to improve the accuracy of detection; match the optimal reminder action for overload danger warning according to the safety difference, and control the vehicle to perform the optimal reminder action, propose a means to actively curb overloading behavior, improve the safety of the vehicle, and effectively meet the use needs.

[0111] For example, in the embodiment of the present application, the safety difference is 50kg, and the overload mass is 1950kg. When the results of calculating the first loading mass and the overload mass meet the safety difference, the optimal reminder action for overload hazard warning can be matched according to the safety difference, and the vehicle overload status can be continuously displayed through the instrument, thereby further improving the safety of the vehicle and effectively meeting the usage requirements.

[0112] It should be noted that the preset safety quality can be set by those skilled in the art according to actual conditions and is not specifically limited here.

[0113] In step S303, the actual loading mass of the vehicle is obtained according to the first loading mass and the corresponding first weight and the second loading mass and the corresponding second weight, and when the actual loading mass is greater than the preset overload mass, the vehicle is controlled to execute the preset safety strategy.

[0114] It can be understood that the preset safety strategies in the embodiments of the present application may include, but are not limited to, various active control safety strategies such as speed limit, torque limit, and instrument reminder when the vehicle is overloaded, so as to actively curb overloading behavior and improve vehicle safety.

[0115] The following describes in detail various active control safety strategies such as speed limit, torque limit, and instrument reminder in the event of overload in the embodiment of the present application.

[0116] During the actual implementation process, the embodiment of the present application can obtain the actual loading mass of the vehicle based on the first loading mass and the corresponding first weight and the second loading mass and the corresponding second weight, and when the actual loading mass is greater than a certain overload mass, control the vehicle to execute certain safety strategies, such as when the vehicle is overloaded, performing various active control safety strategies such as safety speed limit, torque limit, instrument reminder, etc. on the vehicle, thereby ensuring high-precision detection of the loading mass while improving the safety of the vehicle and ensuring that the driver drives safely to the destination to unload the vehicle.

[0117] For example, in the embodiment of the present application, the first loading mass is 2000kg, the second loading mass is 1800kg, the actual loading mass is 1900kg, the certain overload mass is 1600kg, and the certain safe speed is within 30km / h. The embodiment of the present application can obtain the actual loading mass of the vehicle of 1900kg based on the first loading mass of 2000kg and the corresponding first weight and the second loading mass of 1800kg and the corresponding second weight, and when the actual loading mass of 1900kg is greater than the certain overload mass of 1600kg, the vehicle is controlled to execute a certain safety strategy and perform a safe speed limit control on the vehicle. For example, if the current vehicle speed is 60km / h, when the vehicle is detected to be overloaded, speed limit measures can be taken after 15 seconds to gradually slow down the speed, such as reducing the speed by 3km / h every 3 seconds to slow down, until the vehicle speed is limited to the safe speed of 30km / h, thereby actively curbing overloading behavior and improving vehicle safety.

[0118] For another example, the embodiments of the present application can control the vehicle to execute a certain safety strategy when the actual loading mass is greater than a certain overload mass, that is, when the vehicle is overloaded, the vehicle is torque limited, such as reducing the maximum output torque of the current vehicle engine to 75% of the nominal maximum output torque, thereby further actively curbing overloading behavior and improving the safety of the vehicle.

[0119] For another example, the embodiment of the present application can control the vehicle to execute a certain safety strategy when the actual loading mass is greater than a certain overload mass. That is, when the vehicle is overloaded, the vehicle instrument will be reminded. By flashing the instrument lights and displaying text prompts, the vehicle is controlled to remind the driver of the vehicle overload situation, so that the driver can detect the overload situation in time and avoid vehicle overload.

[0120] The embodiment of the present application can also provide an instrument reminder when the vehicle is overloaded and actively control the vehicle's speed and torque limit. For example, when the vehicle is overloaded, the instrument light continues to flash, and the speed and torque limit text is displayed on the instrument. After the text prompt is displayed, speed limit measures are taken after 15 seconds, and the current maximum output torque of the vehicle engine is reduced to 75% of the nominal maximum output torque. While ensuring high-precision detection of loading quality, it improves the safety of the vehicle and ensures that the driver drives safely to the destination to unload the vehicle.

[0121] It should be noted that the preset overload mass and the preset safety policy can be set by those skilled in the art according to actual conditions and are not specifically limited here.

[0122] Optionally, controlling the vehicle to execute a preset safety strategy includes: limiting the vehicle speed to a preset safety speed.

[0123] It can be understood that the certain safe vehicle speed in the embodiment of the present application may be within 30 km / h.

[0124] During the actual implementation process, the embodiment of the present application can control the vehicle to execute a certain safety strategy when it detects that the vehicle is overloaded, and limit the vehicle speed to within 30km / h, thereby ensuring speed limit control when the vehicle is overloaded, which not only avoids overloaded vehicles on the road, but also ensures that the driver can drive safely to the destination to unload the vehicle even if it is overloaded, thereby improving the safety of the vehicle and effectively meeting usage requirements.

[0125] It should be noted that the preset safe speed can be set by those skilled in the art according to actual conditions and is not specifically limited here.

[0126] Optionally, in one embodiment of the present application, it includes: calculating the difference between the actual loading mass and the preset overload mass; matching the optimal prompt action for overload prompt according to the difference, and after ending the optimal prompt action, judging whether the vehicle meets the preset safety policy execution conditions; if the preset safety policy execution conditions are met, limiting the vehicle speed to a preset safety speed.

[0127] It can be understood that the optimal prompt action in the embodiment of the present application can be, but is not limited to, displaying the vehicle's overload speed limit prompt through the instrument panel, and the certain safe speed can be within 30km / h.

[0128] In some embodiments, the difference between the actual loading mass and a certain overload mass can be calculated, and the optimal prompt action for overload prompting can be matched based on the difference. After the optimal prompt action is completed, it is determined whether the vehicle meets the preset safety policy execution conditions. When the preset safety policy execution conditions are met, the vehicle speed can be limited to a certain safe speed to ensure the safety of the vehicle.

[0129] For example, in the embodiment of the present application, the actual loading mass is 2000kg, and the certain overload mass is 2100kg. The difference between the actual loading mass and the certain overload mass is calculated to be 100kg. The optimal prompt action for overload prompt can be matched according to the difference. For example, when the vehicle is overloaded, the instrument continuously displays: "The vehicle is overloaded, and speed limit measures will be taken soon!" After controlling the vehicle to display the overload speed limit prompt, it is judged whether the vehicle meets certain safety policy execution conditions. For example, when the vehicle is overloaded and the vehicle continues to drive, it is determined that the vehicle meets certain safety policy execution conditions. When certain safety policy execution conditions are met, speed limit measures should be taken after 15 seconds, and the current speed of the vehicle should be set to the current speed limit value. After setting the current speed to the speed limit value, the vehicle speed can be continuously monitored and decelerated by reducing the speed by 3km / h every 3 seconds. Finally, the vehicle speed is limited to within 30km / h, so that the vehicle arrives at the destination smoothly and stops safely.

[0130] It should be noted that the preset overload mass, preset safety policy execution conditions and preset safe vehicle speed can be set by those skilled in the art according to actual conditions and are not specifically limited here.

[0131] In summary, this application combines the static load mass obtained from vehicle height with the dynamic load mass obtained from running resistance fitting to accurately detect the actual load mass of the vehicle, thereby limiting the speed of the vehicle when it is overloaded. While improving the accuracy of detection, it also proposes a means to actively curb overloading behavior, improve vehicle safety, and effectively meet user requirements. This solves the problem in the related art that vehicle height data has large fluctuations, resulting in low accuracy and large errors in determining load mass based on vehicle height data, and is limited to detection in a static state, which cannot effectively curb overloading behavior and cannot meet user requirements. While improving detection accuracy, it also improves vehicle safety and effectively meets user requirements.

[0132] Figure 4 It is a structural schematic diagram of a vehicle overload control device provided in an embodiment of the present application.

[0133] For example, Figure 4 As shown, the vehicle overload control device 10 includes:

[0134] The acquisition module 100 is used to acquire the actual vehicle height of the vehicle after loading.

[0135] Processing module 200: used to compare the actual vehicle body height with the reference vehicle body height of the unladen vehicle, match the first loading mass of the vehicle according to the comparison result, and calculate the second loading mass of the vehicle based on the acceleration signal of the loaded vehicle and the actual driving resistance when the first loading mass is less than the preset overload mass.

[0136] Control module 300: used to obtain the actual loading mass of the vehicle based on the first loading mass and the corresponding first weight and the second loading mass and the corresponding second weight, and control the vehicle to execute a preset safety strategy when the actual loading mass is greater than the preset overload mass.

[0137] Optionally, in one embodiment of the present application, the control module 300 includes:

[0138] The first limiting unit is used to limit the speed of the vehicle to a preset safe speed.

[0139] Optionally, in one embodiment of the present application, the control module 300 includes:

[0140] The first calculation unit is used to calculate the difference between the actual loading mass and the preset overload mass.

[0141] Matching unit: used to match the optimal prompt action for overload prompt based on the difference, and control the vehicle to perform the optimal prompt action, so as to determine whether the vehicle meets the preset safety strategy execution conditions after the optimal prompt action is completed.

[0142] The second limiting unit is used to limit the vehicle speed to a preset safety speed when the preset safety policy execution conditions are met.

[0143] Optionally, in one embodiment of the present application, the vehicle overload control device 10 further includes:

[0144] Calculation module: used for calculating the actual driving resistance according to the vehicle's combined resistance and the current slope resistance before calculating the second loading mass of the vehicle, wherein the combined resistance is obtained by fitting the road resistance with the rotating hub.

[0145] Optionally, in one embodiment of the present application, the vehicle overload control device 10 further includes:

[0146] Acquisition module: used for acquiring the stationary time of the vehicle corresponding to the first loading mass and the driving time of the vehicle corresponding to the second loading mass before obtaining the actual loading mass of the vehicle.

[0147] Comparison module: used for comparing the rest time and the driving time, and determining the first weight and the second weight according to the comparison result.

[0148] Optionally, in one embodiment of the present application, the vehicle overload control device 10 further includes:

[0149] Detection module: used for detecting whether the first loading mass is greater than or equal to the preset overload mass after matching the first loading mass of the vehicle according to the comparison result.

[0150] Warning module: used to prohibit the vehicle from starting when it detects that the first loading mass is greater than or equal to the preset overload mass, and to warn the driver of the overload danger.

[0151] Optionally, in one embodiment of the present application, the warning module includes:

[0152] The second calculation unit is used to calculate the safety difference between the first loading mass and the preset overload mass.

[0153] Reminder unit: used to match the optimal reminder action for overload hazard warning according to the safety difference, and control the vehicle to perform the optimal reminder action.

[0154] In summary, this application combines the static load mass obtained from vehicle height with the dynamic load mass obtained from running resistance fitting to accurately detect the actual load mass of the vehicle, thereby limiting the speed of the vehicle when it is overloaded. While improving the accuracy of detection, it also proposes a means to actively curb overloading behavior, improve vehicle safety, and effectively meet user requirements. This solves the problem in the related art that vehicle height data has large fluctuations, resulting in low accuracy and large errors in determining load mass based on vehicle height data, and is limited to detection in a static state, which cannot effectively curb overloading behavior and cannot meet user requirements. While improving detection accuracy, it also improves vehicle safety and effectively meets user requirements.

[0155] Figure 5 It is a structural schematic diagram of a vehicle provided in an embodiment of the present application.

[0156] It should be understood that the above-described method can be applied to Figure 5 In a vehicle of the structure shown.

[0157] In addition, an embodiment of the present application also protects a device, which may include a memory 501 and a processor 502, wherein the memory 501 stores executable program code, and the processor 502 is used to call and execute the executable program code to execute the vehicle overload control method provided in the embodiment of the present application.

[0158] Furthermore, the vehicle further includes: a communication interface 503 for communication between the memory 501 and the processor 502 .

[0159] In this embodiment, the device can be divided into functional modules based on the above-described method examples. For example, each functional module can be mapped to a specific functional module, or two or more functions can be integrated into a single processing module. The integrated module can be implemented in hardware. It should be noted that the module division in this embodiment is illustrative and represents only a logical functional division. In actual implementation, other division methods may be used.

[0160] In the case of dividing each functional module into corresponding functional modules, the device may further include an acquisition module, a processing module, a control module, etc. It should be noted that all relevant contents of each step involved in the above method embodiment can be referred to the functional description of the corresponding functional module and will not be repeated here.

[0161] It should be understood that the device provided in this embodiment is used to execute the above-mentioned vehicle overload control method, and thus can achieve the same effect as the above-mentioned implementation method.

[0162] In the case of an integrated unit, the device may include a processing module and a storage module. When the device is used in a vehicle, the processing module may be used to control and manage the vehicle's movements. The storage module may be used to support the vehicle's execution of program codes, etc.

[0163] The processing module may be a processor 502 or a controller, which may implement or execute various exemplary logic blocks, modules, and circuits disclosed herein. The processor 502 may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a digital signal processing (DSP) and a microprocessor, and the like. The storage module may be a memory 501.

[0164] In addition, the device provided in the embodiments of the present application can specifically be a chip, component or module, and the chip may include a connected processor 502 and a memory 501; wherein the memory 501 is used to store instructions, and when the processor 502 calls and executes the instructions, the chip can execute the vehicle overload control method provided in the above embodiment.

[0165] This embodiment also provides a computer-readable storage medium, which stores computer program code. When the computer program code runs on a computer, the computer executes the above-mentioned related method steps to implement the vehicle overload control method provided in the above embodiment.

[0166] Among them, the device, computer-readable storage medium, computer program product or chip provided in this embodiment are all used to execute the corresponding methods provided above. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding methods provided above, and will not be repeated here.

[0167] Through the description of the above implementation methods, technical personnel in the relevant field can understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be distributed and completed by different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0168] In the embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of modules or units is only a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0169] The above content is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A method for controlling vehicle overload, characterized in that: The following steps are involved: Collect the actual vehicle height after loading; comparing the actual vehicle height with a reference vehicle height of an unladen vehicle, matching a first laden mass of the vehicle based on the comparison result, and calculating a second laden mass of the vehicle based on an acceleration signal of the laden vehicle and an actual driving resistance when the first laden mass is less than a preset overload mass; as well as Obtaining an actual loading mass of the vehicle according to the first loading mass and the corresponding first weight and the second loading mass and the corresponding second weight, and controlling the vehicle to execute a preset safety strategy when the actual loading mass is greater than the preset overload mass; Before obtaining the actual loading mass of the vehicle, the method further includes: Obtaining a stationary time of the vehicle corresponding to the first loading mass, and obtaining a driving time of the vehicle corresponding to the second loading mass; The resting time and the driving time are compared, and the first weight and the second weight are determined according to the comparison result.

2. The method according to claim 1, characterized in that The controlling the vehicle to execute a preset safety strategy includes: The speed of the vehicle is limited to a preset safe speed.

3. The method according to claim 2, characterized in that The controlling the vehicle to execute the preset safety strategy includes: Calculating the difference between the actual loaded mass and the preset overload mass; matching an optimal prompt action for overload prompting according to the difference, controlling the vehicle to execute the optimal prompt action, and after completing the optimal prompt action, determining whether the vehicle meets a preset safety policy execution condition; If the preset safety policy execution condition is met, the speed of the vehicle is limited to the preset safety speed.

4. The method according to claim 1, wherein Before calculating the second loading mass of the vehicle, the method further includes: The actual driving resistance is calculated according to the combined resistance of the vehicle and the current slope resistance, wherein the combined resistance is obtained by fitting the road resistance with the rotating hub.

5. The method according to claim 1, characterized in that After matching the first loading mass of the vehicle according to the comparison result, the method further includes: detecting whether the first loading mass is greater than or equal to the preset overload mass; When it is detected that the first loading mass is greater than or equal to the preset overload mass, the vehicle is prohibited from starting and an overload danger warning is issued to the driver.

6. The method according to claim 5, characterized in that The overload danger warning to the driver includes: Calculating a safety difference between the first loading mass and the preset overload mass; An optimal reminder action for overload hazard warning is matched according to the safety difference, and the vehicle is controlled to execute the optimal reminder action.

7. A vehicle overload control device, characterized in that: include: A collection module is used to collect the actual height of the vehicle after loading; a processing module, configured to compare the actual vehicle height with a reference vehicle height of an unladen vehicle, match a first laden mass of the vehicle based on the comparison result, and, when the first laden mass is less than a preset overload mass, calculate a second laden mass of the vehicle based on an acceleration signal of the laden vehicle and an actual driving resistance; as well as a control module, configured to obtain an actual loading mass of the vehicle based on the first loading mass and the corresponding first weight and the second loading mass and the corresponding second weight, and control the vehicle to execute a preset safety strategy when the actual loading mass is greater than the preset overload mass; an acquisition module, configured to acquire, before obtaining the actual loading mass of the vehicle, a stationary time of the vehicle corresponding to the first loading mass and a driving time of the vehicle corresponding to the second loading mass; A comparison module is used to compare the resting time and the driving time, and determine the first weight and the second weight according to the comparison result.

8. A vehicle, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the vehicle overload control method according to any one of claims 1 to 6.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: The program is executed by a processor to implement the vehicle overload control method according to any one of claims 1 to 6.

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