CN115230670A - Method and device for warning of insufficient braking force of vehicle, vehicle and storage medium - Google Patents
Method and device for warning of insufficient braking force of vehicle, vehicle and storage medium Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/18—Safety devices; Monitoring
- B60T17/22—Devices for monitoring or checking brake systems; Signal devices
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Abstract
The application relates to the technical field of vehicle diagnosis, in particular to a method and a device for alarming insufficient braking force of a vehicle, the vehicle and a storage medium, wherein the method comprises the following steps: collecting vehicle deceleration and brake pedal displacement of a vehicle; inputting the deceleration of the vehicle and the displacement of a brake pedal into a preset brake force diagnosis model, and outputting a brake force diagnosis result, wherein the preset brake force diagnosis model is obtained by training brake force data of the vehicle brake system under different working conditions; and recognizing that the braking force of the vehicle does not meet the preset braking requirement according to the braking force diagnosis result, matching the optimal alarm mode according to the braking force diagnosis result, and controlling the vehicle to execute an alarm action according to the optimal alarm mode. Therefore, the problems that the braking force of a braking system of the vehicle is attenuated when the braking system is used by a user, but the vehicle cannot check the key state of the vehicle and cannot diagnose and remind the user are solved, and the diagnosis model of the whole vehicle with insufficient braking pedal force is established by collecting and analyzing the acceleration data and the displacement data of the whole vehicle.
Description
Technical Field
The application relates to the technical field of vehicle diagnosis, in particular to a method and a device for alarming insufficient braking force of a vehicle, the vehicle and a storage medium.
Background
Automobiles have become the mainstream of people's trip mode, and the appearance, performance and quality of automobiles have received more and more attention. The comprehensive media reports and the investigation results of the third-party investigation structure indicate that one of the items which are most concerned by the user is the whole vehicle driving experience, such as insufficient braking force, abnormal braking sound, abnormal steering sound and the like. The user expects to recognize early abnormal signals and perform appropriate "technical interventions" (e.g., care and precision maintenance) through the collected vehicle use live data at an early stage of the vehicle.
However, the conventional whole vehicle performance improvement technology lacks the acquisition of actual working condition data of a user, cannot carry out user use data analysis, cannot judge that the current design working condition is insufficient or incorrect, and cannot ensure that the design verification in the whole vehicle development process is sufficient and effective, wherein the braking force of a braking system for the whole vehicle is attenuated along with the use of the user, but the vehicle cannot check the key state of the vehicle, cannot diagnose and remind the user, and needs to be solved urgently.
Disclosure of Invention
The application provides a method and a device for alarming insufficient braking force of a vehicle, the vehicle and a storage medium, and solves the problems that the braking force of a braking system of the vehicle is attenuated along with the use of a user, but the vehicle cannot check the key state of the vehicle and cannot diagnose and remind the user, and the like.
An embodiment of a first aspect of the present application provides a method for warning of insufficient braking force of a vehicle, including the following steps: collecting vehicle deceleration and brake pedal displacement of a vehicle; inputting the vehicle deceleration and the brake pedal displacement into a preset brake force diagnosis model, and outputting a brake force diagnosis result, wherein the preset brake force diagnosis model is obtained by training brake force data of a vehicle brake system under different working conditions; and recognizing that the braking force of the vehicle does not meet a preset braking requirement according to the braking force diagnosis result, matching an optimal alarm mode according to the braking force diagnosis result, and controlling the vehicle to execute an alarm action according to the optimal alarm mode.
Optionally, the inputting the vehicle deceleration and the brake pedal displacement to a preset braking force diagnosis model and outputting a braking force diagnosis result comprises: judging whether the vehicle deceleration is smaller than the expected deceleration through the preset braking force diagnosis model and judging whether the brake pedal displacement is larger than the preset displacement; and if the vehicle deceleration is smaller than the expected deceleration and the brake pedal displacement is larger than the preset displacement, outputting the braking force diagnosis result as unreleasable emergency braking, otherwise, outputting the braking force diagnosis result as remileasable emergency braking.
Optionally, the matching an optimal alarm manner according to the braking force diagnosis result includes: if the braking force diagnosis result is the reducible emergency braking, the optimal alarm mode is acoustic alarm or optical alarm; and if the braking force diagnosis result is the unreleasable emergency braking, the optimal alarm mode is acoustic alarm and optical alarm.
Optionally, before inputting the vehicle deceleration and the brake pedal displacement to the preset braking force diagnosis model, the method further comprises: determining various working conditions of the vehicle when the braking force is insufficient; acquiring target vehicle deceleration and target brake pedal displacement of the vehicle under each working condition; and training a target neural network according to the target vehicle deceleration and the target brake pedal displacement of the vehicle under each working condition to obtain the preset brake force diagnosis model.
An embodiment of a second aspect of the present application provides a braking force insufficiency warning device for a vehicle, including: the acquisition module is used for acquiring the vehicle deceleration and the brake pedal displacement of the vehicle; the output module is used for inputting the vehicle deceleration and the brake pedal displacement to a preset brake force diagnosis model and outputting a brake force diagnosis result, wherein the preset brake force diagnosis model is obtained by training brake force data of a vehicle brake system under different working conditions; and the alarm module is used for identifying that the braking force of the vehicle does not meet the preset braking requirement according to the braking force diagnosis result, matching an optimal alarm mode according to the braking force diagnosis result, and controlling the vehicle to execute an alarm action according to the optimal alarm mode.
Optionally, the output module is specifically configured to: judging whether the vehicle deceleration is smaller than the expected deceleration through the preset braking force diagnosis model and judging whether the brake pedal displacement is larger than the preset displacement; and if the vehicle deceleration is smaller than the expected deceleration and the brake pedal displacement is larger than the preset displacement, outputting the braking force diagnosis result as unreleasable emergency braking, otherwise, outputting the braking force diagnosis result as remileasable emergency braking.
Optionally, the alarm module is specifically configured to: if the braking force diagnosis result is the relieved emergency braking, the optimal alarm mode is acoustic alarm or optical alarm; and if the braking force diagnosis result is the unreleasable emergency braking, the optimal alarm mode is acoustic alarm and optical alarm.
Optionally, before inputting the vehicle deceleration and the brake pedal displacement to the preset braking force diagnostic model, the output module is further configured to: determining various working conditions of the vehicle when the braking force is insufficient; acquiring target vehicle deceleration and target brake pedal displacement of the vehicle under each working condition; and training a target neural network according to the target vehicle deceleration and the target brake pedal displacement of the vehicle under each working condition to obtain the preset brake force diagnosis model.
An embodiment of a third aspect of the present application provides a vehicle, comprising: a memory, a processor and a computer program stored on the memory and executable on the processor, the processor executing the program to implement the method for warning of insufficient braking force of a vehicle as described in the above embodiments.
A fourth aspect embodiment of the present application provides a computer-readable storage medium, on which a computer program is stored, the program being executed by a processor for implementing a method for warning of an insufficient braking force of a vehicle as described in the above embodiments.
According to the embodiment of the application, the deceleration and the displacement of the brake pedal of the vehicle are collected, the deceleration and the displacement of the brake pedal of the vehicle are input into a preset brake force diagnosis model, the brake force diagnosis result is output, the brake force of the vehicle is identified to be not met with the preset brake requirement according to the brake force diagnosis result, the optimal alarm mode is matched according to the brake force diagnosis result, and the vehicle is controlled to perform the alarm action according to the optimal alarm mode. Therefore, the problems that the braking force of a braking system of the vehicle is attenuated when the braking system is used by a user, but the vehicle cannot check the key state of the vehicle and cannot diagnose and remind the user are solved, the diagnosis model of the whole vehicle with insufficient braking pedal force is established by collecting and analyzing the acceleration data and the displacement data of the whole vehicle, and the user is reminded in an alarming mode.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a flow chart of a method for warning of insufficient braking force of a vehicle according to an embodiment of the present application;
FIG. 2 is a schematic diagram of a vehicle braking system according to an embodiment of the present application;
FIG. 3 is a schematic diagram of an analysis of a reason for insufficient braking force of a vehicle according to an embodiment of the application;
FIG. 4 is a schematic diagram of a vehicle braking force data collection result according to one embodiment of the application;
FIG. 5 is a schematic illustration of a braking system data acquisition result according to an embodiment of the present application;
FIG. 6 is a schematic illustration of data acquisition results for different states of a brake system according to one embodiment of the present application;
FIG. 7 is a block schematic diagram of an under-brake-force warning device of a vehicle according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of a vehicle according to an embodiment of the present application.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application.
A braking force shortage warning method and device for a vehicle, and a storage medium according to embodiments of the present application are described below with reference to the accompanying drawings. In order to solve the problem that the braking force of a braking system of a vehicle is attenuated when the braking system is used by a user, but the vehicle cannot check the key state of the vehicle and cannot diagnose and remind the user, the application provides an insufficient braking force alarming method of the vehicle. Therefore, the problems that the braking force of a braking system of the vehicle is attenuated when the braking system is used by a user, but the vehicle cannot check the key state of the vehicle and cannot diagnose and remind the user are solved, the diagnosis model of the whole vehicle with insufficient braking pedal force is established by collecting and analyzing the acceleration data and the displacement data of the whole vehicle, and the user is reminded in an alarming mode.
Specifically, fig. 1 is a schematic flow chart of a method for warning of insufficient braking force of a vehicle according to an embodiment of the present application.
As shown in fig. 1, the method for alarming insufficient braking force of a vehicle comprises the following steps:
in step S101, the vehicle deceleration and the brake pedal displacement of the vehicle are collected.
Specifically, the speed of the vehicle is acquired by a GPS vehicle speed meter installed on the vehicle, the deceleration of the vehicle is obtained by a gyroscope, and the displacement data of the brake pedal is acquired by a displacement sensor. The collected devices are shown in table 1:
TABLE 1
| Serial number | Device name | Specification of |
| 1 | Displacement sensor | SENST2-631 |
| 2 | Force sensor | PKH2.0/HT2.0 |
| 3 | GPS vehicle speed instrument | VBOX3i |
| 4 | Gyroscope | RLVBYAW03 |
In step S102, the deceleration of the vehicle and the displacement of the brake pedal are input to a preset braking force diagnosis model, and a braking force diagnosis result is output, wherein the preset braking force diagnosis model is trained by braking force data of different working conditions of the vehicle braking system.
Alternatively, in some embodiments, the vehicle deceleration and the brake pedal displacement are input to a preset braking force diagnosis model, and the braking force diagnosis result is output, including: judging whether the deceleration of the vehicle is smaller than the expected deceleration through a preset braking force diagnosis model and judging whether the displacement of a brake pedal is larger than the preset displacement; and if the deceleration of the vehicle is smaller than the expected deceleration and the displacement of the brake pedal is larger than the preset displacement, outputting the braking force diagnosis result as unreleasable emergency braking, otherwise, outputting the braking force diagnosis result as remileasable emergency braking.
Specifically, if the detected vehicle deceleration is less than the expected deceleration and the detected brake pedal displacement is greater than the preset displacement, outputting the braking force diagnosis result as unreleasable emergency braking; if the detected deceleration of the vehicle is greater than or equal to the expected deceleration, the braking force diagnosis result is output as a remittable emergency braking.
In step S103, the braking force of the vehicle is identified to not meet the preset braking requirement according to the braking force diagnosis result, the optimal alarm mode is matched according to the braking force diagnosis result, and the vehicle is controlled to execute the alarm action according to the optimal alarm mode.
Optionally, in some embodiments, matching the optimal warning mode according to the braking force diagnosis result includes: if the braking force diagnosis result is reducible emergency braking, the optimal alarm mode is acoustic alarm or optical alarm; if the braking force diagnosis result is irreparable emergency braking, the optimal alarm mode is acoustic alarm and optical alarm.
It can be understood that if the braking force diagnosis result is the emergency braking which can be relieved, a buzzer in the vehicle sends out a 'dripping' sound to remind a user, or an instrument panel in the vehicle flashes a red light to remind the user; and if the braking force diagnosis result is unreleasable emergency braking, a buzzer in the vehicle emits a 'dripping' sound to remind a user, and an instrument panel in the vehicle flashes red light to remind the user.
Optionally, in some embodiments, before inputting the vehicle deceleration and the brake pedal displacement to the preset braking force diagnosis model, the method further comprises: determining various working conditions of the vehicle when the braking force is insufficient; acquiring target vehicle deceleration and target brake pedal displacement of a vehicle under each working condition; and training a target neural network according to the target vehicle deceleration and the target brake pedal displacement of the vehicle under each working condition to obtain a preset brake force diagnosis model.
Before a preset brake force diagnosis model is obtained, the working principle of the brake system of the vehicle is simply explained.
The braking system of a vehicle includes a service braking system and a parking braking system. The service brake system is used for decelerating or stopping a running vehicle in a shortest time, and the parking brake system is used for enabling the stopped vehicle to stay in place without rolling. The key parts of the brake system mainly comprise a brake pedal, a vacuum booster, a brake friction plate and the like. The working principle of the whole vehicle brake system is shown in fig. 2, wherein 1 is a brake pedal, 2 is a control valve, 3 is a vacuum booster, 4 is a brake master cylinder, 5 is a brake pipeline, and 6 is a brake. When the driver steps on the brake pedal, the ejector rod is pushed into the vacuum booster under the lever action. The vacuum booster boosts the lift pin using vacuum and transmits the force to the master cylinder, thereby generating hydraulic pressure in the master cylinder, which is transmitted to each wheel brake assembly by brake fluid through a brake line. The wheel brake assembly uses this pressure to press friction elements (brake pads or shoes) against a member that rotates with the wheel, thereby slowing or stopping the rotation of the wheel.
Further, according to the actual use scenario of the user during research, the main working condition with insufficient braking force is a service braking system. According to the professional experience, the reasons for the insufficient braking force of the vehicle are as follows: brake pad problems, brake pedal problems, or brake system air presence, etc., as shown in fig. 3.
Further, the working condition of insufficient braking force is designed by combining engineering parameters influencing the insufficient braking force and the working process of a braking system, and according to the reasons influencing the insufficient braking force and the engineering experience, the working condition of insufficient braking force is designed by respectively adopting three modes of replacing a worn tire (a comprehensive road test tire), frequently braking for long-time running (about 2 h) to cause a friction plate/brake disc to generate heat and releasing partial braking liquid through left and right front brake hoses to cause air to enter a brake cylinder.
The vehicle deceleration and target brake pedal displacement data of the vehicle under each working condition are collected, the collected result is shown in fig. 4, and the result is shown in the table 2 through subjective evaluation of professional engineers, the working condition with insufficient braking force can be rapidly generated in a mode that air enters a brake pipeline due to the fact that brake fluid of left and right front brake hose portions is released, and the subjective evaluation result of the insufficient braking force of the whole vehicle is shown in the table 2.
TABLE 2
Furthermore, by combining the structural characteristics of the brake pipeline, the embodiment of the application adopts a mode of loosening the oil drain bolt on the brake caliper to mix air into the brake pipeline, and controls the mixed air quantity by controlling the frequency of stepping on and putting off the brake pedal, so as to control the attenuation degree of the braking force. Wherein the step of mixing air is: the brake pedal is repeatedly stepped by loosening the oil drain bolt (2) on the brake caliper, so that oil flows out (3) and the oil drain bolt (4) on the brake caliper is fastened to increase brake fluid of the brake fluid pot according to the situation.
Meanwhile, the process of exhausting air in the brake pipeline is designed in the embodiment of the application, wherein the air exhausting step is as follows: the method comprises the steps of (1) stepping on a brake pedal for many times, then stepping on the brake pedal all the time, (2) loosening an oil drain bolt (3) on a brake caliper, discharging air (4) in a brake pipeline, moving the brake pedal downwards, keeping a stepping state, (5) fastening the oil drain bolt (6) on the brake caliper, and repeating the above circulation for many times.
According to the embodiment of the application, partial brake fluid is released through the left front brake hose and the right front brake hose so that air enters the brake cylinder, four collecting states are designed, namely a normal state, an abnormal state 1, an abnormal state 2 and an abnormal state 3, and the pressure of the corresponding brake pipeline is collected through the force sensor when air enters different quantities, and is shown in a table 3.
TABLE 3
| Status of state | Corresponding brake line pressure (bar) -when the brake pedal displacement is 40mm |
| Normal state | 29.70 |
| |
23.98 |
| |
22.09 |
| |
9.80 |
In the four states, the deceleration of the vehicle and the displacement of the brake pedal are collected, firstly, the fact that the brake system of the vehicle meets the design requirements of products is determined, the deceleration of the vehicle and the brake pedal in the normal state of the vehicle are collected and analyzed, the collection result is shown in figure 5, and the result meets the design requirements of the products. And data in the other three states are acquired and analyzed, the data acquisition result is shown in fig. 6, and finally the preset braking force diagnosis model is obtained and is shown in table 4.
TABLE 4
According to the alarming method for the lack of braking force of the vehicle, the deceleration and the displacement of the brake pedal of the vehicle are collected, the deceleration and the displacement of the brake pedal of the vehicle are input into a preset braking force diagnosis model, a braking force diagnosis result is output, the fact that the braking force of the vehicle does not meet the preset braking requirement is identified according to the braking force diagnosis result, the optimal alarming mode is matched according to the braking force diagnosis result, and the vehicle is controlled to perform alarming action according to the optimal alarming mode. Therefore, the problems that the braking force of a braking system of the vehicle is attenuated to some extent when the braking system is used by a user, but the vehicle cannot check the key state of the vehicle, cannot diagnose and remind the user and the like are solved, a diagnosis model for the insufficient force of a brake pedal of the whole vehicle is established by collecting and analyzing the acceleration data and the displacement data of the brake pedal of the whole vehicle, and the user is reminded in an alarming mode.
Next, a brake-force shortage warning device for a vehicle according to an embodiment of the present application will be described with reference to the drawings.
Fig. 7 is a block diagram schematically illustrating a brake-insufficiency warning device for a vehicle according to an embodiment of the present application.
As shown in fig. 7, the insufficient braking force warning device 10 for a vehicle includes: the system comprises an acquisition module 100, an output module 200 and an alarm module 300.
The system comprises an acquisition module 100, a control module and a control module, wherein the acquisition module 100 is used for acquiring the vehicle deceleration and the brake pedal displacement of a vehicle; the output module 200 is configured to input the vehicle deceleration and the brake pedal displacement to a preset brake force diagnosis model, and output a brake force diagnosis result, where the preset brake force diagnosis model is obtained by training brake force data of a vehicle brake system under different working conditions; and the alarm module 300 is used for identifying that the braking force of the vehicle does not meet the preset braking requirement according to the braking force diagnosis result, matching the optimal alarm mode according to the braking force diagnosis result, and controlling the vehicle to perform an alarm action according to the optimal alarm mode.
Optionally, in some embodiments, the output module 200 is specifically configured to: judging whether the deceleration of the vehicle is smaller than the expected deceleration through a preset braking force diagnosis model and judging whether the displacement of a brake pedal is larger than the preset displacement; and if the deceleration of the vehicle is smaller than the expected deceleration and the displacement of the brake pedal is larger than the preset displacement, outputting the braking force diagnosis result as unreleasable emergency braking, otherwise, outputting the braking force diagnosis result as remileasable emergency braking.
Optionally, in some embodiments, the alarm module 300 is specifically configured to: if the braking force diagnosis result is the relieved emergency braking, the optimal alarm mode is acoustic alarm or optical alarm; if the braking force diagnosis result is unreleasable emergency braking, the optimal alarm modes are acoustic alarm and optical alarm.
Optionally, in some embodiments, before inputting the vehicle deceleration and the brake pedal displacement to the preset braking force diagnostic model, the output module 200 is further configured to: determining various working conditions of the vehicle when the braking force is insufficient; acquiring target vehicle deceleration and target brake pedal displacement of a vehicle under each working condition; and training a target neural network according to the target vehicle deceleration and the target brake pedal displacement of the vehicle under each working condition to obtain a preset brake force diagnosis model.
It should be noted that the foregoing explanation of the embodiment of the method for warning of insufficient braking force of a vehicle is also applicable to the device for warning of insufficient braking force of a vehicle of this embodiment, and will not be described again here.
According to the alarming device for the lack of braking force of the vehicle, the deceleration and the displacement of the brake pedal of the vehicle are collected, the deceleration and the displacement of the brake pedal of the vehicle are input into a preset braking force diagnosis model, a braking force diagnosis result is output, the fact that the braking force of the vehicle does not meet the preset braking requirement is identified according to the braking force diagnosis result, the optimal alarming mode is matched according to the braking force diagnosis result, and the vehicle is controlled to perform alarming action according to the optimal alarming mode. Therefore, the problems that the braking force of a braking system of the vehicle is attenuated to some extent when the braking system is used by a user, but the vehicle cannot check the key state of the vehicle, cannot diagnose and remind the user and the like are solved, a diagnosis model for the insufficient force of a brake pedal of the whole vehicle is established by collecting and analyzing the acceleration data and the displacement data of the brake pedal of the whole vehicle, and the user is reminded in an alarming mode.
Fig. 8 is a schematic structural diagram of a vehicle according to an embodiment of the present application. The vehicle may include:
a memory 801, a processor 802, and a computer program stored on the memory 801 and executable on the processor 802.
The processor 802 implements the method for warning of insufficient braking force of the vehicle provided in the above-described embodiment when executing the program.
Further, the vehicle further includes:
a communication interface 803 for communicating between the memory 801 and the processor 802.
A memory 801 for storing computer programs operable on the processor 802.
The memory 801 may comprise high-speed RAM memory, and may also include non-volatile memory (non-volatile memory), such as at least one disk memory.
If the memory 801, the processor 802 and the communication interface 803 are implemented independently, the communication interface 803, the memory 801 and the processor 802 may be connected to each other via a bus and communicate with each other. The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 8, but that does not indicate only one bus or one type of bus.
Optionally, in a specific implementation, if the memory 801, the processor 802, and the communication interface 803 are integrated on one chip, the memory 801, the processor 802, and the communication interface 803 may complete mutual communication through an internal interface.
The processor 802 may be a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), or one or more Integrated circuits configured to implement embodiments of the present Application.
Embodiments of the present application also provide a computer-readable storage medium, on which a computer program is stored, which when executed by a processor, implements the method for warning of insufficient braking force of a vehicle as above.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or N embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present application, "N" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more N executable instructions for implementing steps of a custom logic function or process, and alternate implementations are included within the scope of the preferred embodiment of the present application in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of implementing the embodiments of the present application.
The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or N wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present application may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the N steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. If implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present application may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc. Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.
Claims (10)
1. A method for alarming insufficient braking force of a vehicle is characterized by comprising the following steps:
collecting vehicle deceleration and brake pedal displacement of a vehicle;
inputting the vehicle deceleration and the brake pedal displacement into a preset brake force diagnosis model, and outputting a brake force diagnosis result, wherein the preset brake force diagnosis model is obtained by training brake force data of a vehicle brake system under different working conditions; and
and recognizing that the braking force of the vehicle does not meet a preset braking requirement according to the braking force diagnosis result, matching an optimal alarm mode according to the braking force diagnosis result, and controlling the vehicle to execute an alarm action according to the optimal alarm mode.
2. The method of claim 1, wherein the inputting the vehicle deceleration and the brake pedal displacement to a preset brake force diagnostic model, outputting a brake force diagnostic result, comprises:
judging whether the vehicle deceleration is smaller than the expected deceleration through the preset braking force diagnosis model and judging whether the brake pedal displacement is larger than the preset displacement;
and if the vehicle deceleration is smaller than the expected deceleration and the brake pedal displacement is larger than the preset displacement, outputting the braking force diagnosis result as unreleasable emergency braking, otherwise, outputting the braking force diagnosis result as remileasable emergency braking.
3. The method of claim 2, wherein matching an optimal warning mode based on the braking force diagnostic result comprises:
if the braking force diagnosis result is the reducible emergency braking, the optimal alarm mode is acoustic alarm or optical alarm;
and if the braking force diagnosis result is the irreparable emergency braking, the optimal alarm mode is acoustic alarm and optical alarm.
4. The method according to claim 1, characterized by, before inputting the vehicle deceleration and the brake pedal displacement to the preset braking force diagnostic model, further comprising:
determining various working conditions of the vehicle when the braking force is insufficient;
acquiring target vehicle deceleration and target brake pedal displacement of the vehicle under each working condition;
and training a target neural network according to the target vehicle deceleration and the target brake pedal displacement of the vehicle under each working condition to obtain the preset brake force diagnosis model.
5. An insufficient braking force warning device for a vehicle, comprising:
the acquisition module is used for acquiring the vehicle deceleration and the brake pedal displacement of the vehicle;
the output module is used for inputting the vehicle deceleration and the brake pedal displacement to a preset brake force diagnosis model and outputting a brake force diagnosis result, wherein the preset brake force diagnosis model is obtained by training brake force data of a vehicle brake system under different working conditions; and
and the alarm module is used for identifying that the braking force of the vehicle does not meet the preset braking requirement according to the braking force diagnosis result, matching an optimal alarm mode according to the braking force diagnosis result, and controlling the vehicle to execute an alarm action according to the optimal alarm mode.
6. The apparatus of claim 5, wherein the output module is specifically configured to:
judging whether the vehicle deceleration is smaller than the expected deceleration through the preset braking force diagnosis model and judging whether the brake pedal displacement is larger than the preset displacement;
and if the vehicle deceleration is smaller than the expected deceleration and the brake pedal displacement is larger than the preset displacement, outputting the braking force diagnosis result as unreleasable emergency braking, otherwise, outputting the braking force diagnosis result as remileasable emergency braking.
7. The device according to claim 5, wherein the alarm module is specifically configured to:
if the braking force diagnosis result is the relieved emergency braking, the optimal alarm mode is acoustic alarm or optical alarm;
and if the braking force diagnosis result is the unreleasable emergency braking, the optimal alarm mode is acoustic alarm and optical alarm.
8. The apparatus of claim 5, wherein the output module, prior to inputting the vehicle deceleration and the brake pedal displacement to the preset brake force diagnostic model, is further configured to:
determining various working conditions of the vehicle when the braking force is insufficient;
acquiring target vehicle deceleration and target brake pedal displacement of the vehicle under each working condition;
and training a target neural network according to the target vehicle deceleration and the target brake pedal displacement of the vehicle under each working condition to obtain the preset brake force diagnosis model.
9. A vehicle comprising a memory, a processor;
wherein the processor executes a program corresponding to the executable program code by reading the executable program code stored in the memory for implementing the insufficient braking force warning method of the vehicle according to any one of claims 1 to 4.
10. A computer-readable storage medium storing a computer program, characterized in that the program, when executed by a processor, implements a method for warning of an insufficient braking force of a vehicle according to any one of claims 1 to 4.
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