CN115230670B - Method and device for alarming insufficient braking force of vehicle, vehicle and storage medium - Google Patents
Method and device for alarming insufficient braking force of vehicle, vehicle and storage medium Download PDFInfo
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- CN115230670B CN115230670B CN202211019518.0A CN202211019518A CN115230670B CN 115230670 B CN115230670 B CN 115230670B CN 202211019518 A CN202211019518 A CN 202211019518A CN 115230670 B CN115230670 B CN 115230670B
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- 230000003287 optical effect Effects 0.000 claims description 14
- 238000013528 artificial neural network Methods 0.000 claims description 6
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- 230000002238 attenuated effect Effects 0.000 abstract description 8
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- 239000012530 fluid Substances 0.000 description 5
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Classifications
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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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- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The application relates to the technical field of vehicle diagnosis, in particular to a braking force deficiency alarming method and device for 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 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 different working conditions of a vehicle brake system; and recognizing that the braking force of the vehicle does not meet the preset braking requirement according to the braking force diagnosis result, matching an optimal alarming mode according to the braking force diagnosis result, and controlling the vehicle to execute alarming action according to the optimal alarming mode. Therefore, 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, cannot diagnose and remind the user and the like are solved, and a diagnosis model of insufficient braking pedal force of the whole vehicle is established by collecting and analyzing the whole vehicle acceleration and braking pedal displacement data.
Description
Technical Field
The application relates to the technical field of vehicle diagnosis, in particular to a braking force deficiency alarming method and device for a vehicle, the vehicle and a storage medium.
Background
Automobiles become the main stream of travel modes of people, and the appearance, performance and quality of the automobiles are receiving more and more attention. The comprehensive media report and the investigation result of the third party investigation structure show that one of the most concerned items of the user is the driving experience of the whole vehicle, such as insufficient braking force, abnormal braking sound, abnormal steering sound and the like. The user expects to identify early anomalies by using live data from the collected vehicle at an early stage of the vehicle that these problems have occurred, and to perform appropriate "technical interventions" (such as care and maintenance).
However, the traditional whole vehicle performance improving technology lacks the acquisition of the actual working condition data of the user, cannot develop the user use data analysis, cannot judge that the current design working condition is insufficient or not right, and cannot ensure the sufficient and effective design verification of the whole vehicle development process, wherein the braking force of a braking system of 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, a device, a vehicle and a storage medium for alarming braking force deficiency of a vehicle, which solve 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, cannot diagnose and remind the user and the like.
An embodiment of a first aspect of the present application provides a braking force shortage warning method for a vehicle, including the steps of: collecting vehicle deceleration and brake pedal displacement of a vehicle; inputting the vehicle deceleration and the brake pedal displacement to a preset braking force diagnosis model, and outputting a braking force diagnosis result, wherein the preset braking force diagnosis model is trained by braking force data of different working conditions of a vehicle braking system; and 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 alarming mode according to the braking force diagnosis result, and controlling the vehicle to execute alarming action according to the optimal alarming mode.
Optionally, the inputting the vehicle deceleration and the brake pedal displacement to a preset braking force diagnosis model, outputting a braking force diagnosis result, includes: judging whether the vehicle deceleration is smaller than the expected deceleration or not through the preset braking force diagnosis model, and judging whether the brake pedal displacement is larger than a preset displacement or not; outputting the braking force diagnosis result as unreliability emergency braking if the vehicle deceleration is smaller than the expected deceleration and the brake pedal displacement is larger than the preset displacement, otherwise outputting the braking force diagnosis result as the remittability emergency braking.
Optionally, the matching the optimal alarm mode according to the braking force diagnosis result includes: if the braking force diagnosis result is the emergency braking which can be relieved, the optimal alarming mode is acoustic alarming or optical alarming; and if the braking force diagnosis result is the unreleasable emergency braking, the optimal alarming mode is acoustic alarming and optical alarming.
Optionally, before inputting the vehicle deceleration and the brake pedal displacement to the preset braking force diagnostic model, further comprising: determining a plurality of working conditions of the vehicle when braking force is insufficient; collecting 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 braking force diagnosis model.
An embodiment of the second aspect of the present application provides a braking force shortage 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 into a preset braking force diagnosis model and outputting a braking force diagnosis result, wherein the preset braking force diagnosis model is obtained by training braking force data of different working conditions of a vehicle braking system; 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 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 or not through the preset braking force diagnosis model, and judging whether the brake pedal displacement is larger than a preset displacement or not; outputting the braking force diagnosis result as unreliability emergency braking if the vehicle deceleration is smaller than the expected deceleration and the brake pedal displacement is larger than the preset displacement, otherwise outputting the braking force diagnosis result as the remittability emergency braking.
Optionally, the alarm module is specifically configured to: if the braking force diagnosis result is the emergency braking which can be relieved, the optimal alarming mode is acoustic alarming or optical alarming; and if the braking force diagnosis result is the unreleasable emergency braking, the optimal alarming mode is acoustic alarming and optical alarming.
Optionally, before inputting the vehicle deceleration and the brake pedal displacement into the preset braking force diagnostic model, the output module is further configured to: determining a plurality of working conditions of the vehicle when braking force is insufficient; collecting 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 braking force diagnosis model.
An embodiment of a third aspect of the present application provides a vehicle including: the braking force shortage warning device comprises a memory, a processor and a computer program stored in the memory and capable of running on the processor, wherein the processor executes the program to realize the braking force shortage warning method of the vehicle according to the embodiment.
An embodiment of a fourth aspect of the present application provides a computer-readable storage medium having stored thereon a computer program that is executed by a processor for implementing the braking force shortage warning method of a vehicle as described in the above embodiment.
According to the embodiment of the application, the vehicle deceleration and the brake pedal displacement of the vehicle are acquired, the vehicle deceleration and the brake pedal displacement are input into a preset brake force diagnosis model, a brake force diagnosis result is output, the fact that the brake force of the vehicle does not meet the preset brake demand is recognized according to the brake force diagnosis result, an optimal alarming mode is matched according to the brake force diagnosis result, and the vehicle is controlled to execute alarming action according to the optimal alarming mode. Therefore, the problems that the braking force of a braking system of a vehicle is attenuated along with the use of 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 of insufficient braking pedal force of the whole vehicle is established by collecting and analyzing the whole vehicle acceleration and the braking pedal displacement data, and the user is reminded in an alarm mode.
Additional aspects and advantages of the 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 application.
Drawings
The foregoing and/or additional aspects and advantages of the application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a flow chart of a method for providing a braking force deficiency warning for a vehicle according to an embodiment of the present application;
FIG. 2 is a schematic diagram of the operating principle of a vehicle braking system according to an embodiment of the present application;
FIG. 3 is a schematic diagram of an analysis of the cause of a vehicle braking force deficiency in accordance with one embodiment of the present application;
FIG. 4 is a schematic diagram of the overall vehicle braking force data acquisition results according to one embodiment of the present application;
FIG. 5 is a schematic illustration of brake system data acquisition results according to one embodiment of the present application;
FIG. 6 is a schematic diagram 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 a braking force shortage warning device of a vehicle according to an embodiment of the application;
Fig. 8 is a schematic structural diagram of a vehicle according to an embodiment of the present application.
Detailed Description
Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present application and should not be construed as limiting the application.
The following describes a braking force shortage warning method, a device, a vehicle, and a storage medium of a vehicle according to an embodiment of the present application with reference to the accompanying drawings. Aiming at the problems that the braking force of a braking system of a 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, the application provides a method for alarming the braking force deficiency of the vehicle. Therefore, the problems that the braking force of a braking system of a vehicle is attenuated along with the use of 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 of insufficient braking pedal force of the whole vehicle is established by collecting and analyzing the whole vehicle acceleration and the braking pedal displacement data, and the user is reminded in an alarm mode.
Specifically, fig. 1 is a schematic flow chart of a braking force shortage alarming method of a vehicle according to an embodiment of the present application.
As shown in fig. 1, the braking force shortage warning method of the vehicle includes the steps of:
in step S101, a vehicle deceleration and a brake pedal displacement of the vehicle are acquired.
Specifically, the speed of the vehicle is acquired through a GPS vehicle speed instrument arranged on the vehicle, the deceleration of the vehicle is obtained through a gyroscope, and the displacement data of a brake pedal is acquired through a displacement sensor. The collected devices are shown in table 1:
TABLE 1
| Sequence number | Device name | Specifications of equipment |
| 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 vehicle deceleration and the brake pedal displacement are input to a preset brake force diagnosis model, and a brake force diagnosis result is output, wherein the preset brake force diagnosis model is trained by brake force data of different working conditions of a vehicle brake system.
Optionally, in some embodiments, inputting the vehicle deceleration and the brake pedal displacement to a preset braking force diagnosis model, outputting a braking force diagnosis result includes: judging whether the vehicle deceleration is smaller than the expected deceleration or not through a preset braking force diagnosis model, and judging whether the brake pedal displacement is larger than the preset displacement or not; if the vehicle deceleration is smaller than the expected deceleration and the brake pedal displacement is larger than the preset displacement, outputting a braking force diagnosis result to be the unreliable emergency braking, otherwise, outputting a braking force diagnosis result to be the releasable emergency braking.
Specifically, if the detected vehicle deceleration is smaller than the expected deceleration and the detected brake pedal displacement is larger than the preset displacement, outputting a braking force diagnosis result as an unreliable emergency brake; and if the detected vehicle deceleration is greater than or equal to the expected deceleration, outputting a braking force diagnosis result as a releasable emergency brake.
In step S103, it is identified that the braking force of the vehicle does not meet the preset braking requirement according to the braking force diagnosis result, an optimal warning mode is matched according to the braking force diagnosis result, and the vehicle is controlled to execute the warning action according to the optimal warning mode.
Optionally, in some embodiments, matching the optimal alert mode according to the braking force diagnostic result includes: if the braking force diagnosis result is an emergency braking which can be relieved, the optimal alarming mode is acoustic alarming or optical alarming; if the braking force diagnosis result is unreleasable emergency braking, the optimal alarming mode is acoustic alarming and optical alarming.
It can be understood that if the braking force diagnosis result is an emergency braking which can be relieved, a 'dripping' sound is sent out by a buzzer in the vehicle to remind a user, or a red light is flashed by an instrument panel in the vehicle to remind the user; if the braking force diagnosis result is unreleasable emergency braking, the buzzer in the vehicle is used for sending out a drop sound to remind the user, and meanwhile, the instrument panel in the vehicle is used for flashing a red light to remind the user.
Optionally, in some embodiments, before inputting the vehicle deceleration and the brake pedal displacement into the preset braking force diagnostic model, further comprising: determining various working conditions of the vehicle when braking force is insufficient; collecting 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 a preset braking force diagnosis model.
Before a predetermined braking force diagnostic model is obtained, the operating principle of the brake system of the vehicle is briefly 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 the running vehicle in the shortest time, and the parking brake system is used for stopping the stopped vehicle without sliding the vehicle in place. The key components of the braking system mainly comprise a brake pedal, a vacuum booster, a brake friction plate and the like. The working principle of the whole vehicle braking 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 depresses the brake pedal, the ejector rod is pushed into the vacuum booster under the leverage. The vacuum booster provides assistance to the ram by means of vacuum and transmits this force to the brake master cylinder, whereby a hydraulic pressure is generated in the brake master cylinder, which pressure is transmitted from the brake fluid to the wheel brake assemblies via the brake lines. The wheel brake assembly uses this pressure to press the friction elements (brake pads or shoes) against the components rotating with the wheel, thereby reducing or stopping the rotational speed of the wheel.
Further, according to the actual use scene when the user investigation, the main working condition of the insufficient braking force is a service braking system. The reasons for insufficient braking force of the vehicle are as follows in combination with professional experience: the brake pad problem, the brake pedal problem, or the presence of air in the brake system, etc., as shown in fig. 3.
Further, working conditions of insufficient braking force are designed by combining engineering parameters affecting insufficient braking force and working processes of a braking system, and working conditions of insufficient braking force are designed by combining engineering experience in three modes of changing into worn tires (comprehensive road test tires), frequent braking for a long time (about 2 hours) to heat friction plates/brake discs and releasing part brake fluid through left and right front brake hoses to enable air to enter a brake cylinder according to the reasons affecting insufficient braking force.
After collecting the vehicle deceleration and target brake pedal displacement data of the vehicle under each working condition, the collected results are shown in fig. 4, and the results are subjectively evaluated by a professional engineer, and the results show that the working conditions with insufficient braking force can be rapidly generated by releasing the brake fluid of the left and right front brake hose parts so that air enters the brake pipeline, and the subjective evaluation results of the braking force deficiency of the whole vehicle are shown in table 2.
TABLE 2
Further, 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 in the brake pipeline, and controls the mixed air quantity by controlling the number of times of stepping on the brake pedal so as to control the attenuation degree of the braking force. Wherein, the step of mixing air is: the method comprises the steps of (1) loosening an oil drain bolt (2) on a brake caliper and repeatedly stepping on a brake pedal to enable oil to flow out (3) to fasten an oil drain bolt (4) on the brake caliper, and optionally increasing brake fluid of a brake fluid pot.
Meanwhile, the embodiment of the application designs a process for exhausting air in a brake pipeline, wherein the step of exhausting air is as follows: the method comprises the steps of (1) continuously pressing (2) the oil drain bolt (3) on the brake caliper after the brake pedal is pressed repeatedly, discharging air (4) in a brake pipeline, keeping the pressing state (5) after the brake pedal is moved downwards, and fastening the oil drain bolt (6) on the brake caliper, and repeating the above cycle repeatedly for a plurality of times.
According to the embodiment of the application, the brake cylinder is provided with four collected states, namely a normal state, an abnormal state 1, an abnormal state 2 and an abnormal state 3, by releasing part of brake liquid through the left and right front brake hoses so that air enters the brake cylinder, and the pressure of a corresponding brake pipeline when different amounts of air enter is collected through a force sensor, as shown in a table 3.
TABLE 3 Table 3
| Status of | Corresponding to a brake line pressure (bar) -brake pedal displacement of 40mm |
| Normal state | 29.70 |
| Abnormal State 1 | 23.98 |
| Abnormal State 2 | 22.09 |
| Abnormal State 3 | 9.80 |
Under four states, the vehicle deceleration and the brake pedal displacement are collected, firstly, the vehicle brake system is determined to meet the product design requirement, the vehicle deceleration and the brake pedal under the normal state of the vehicle are collected and analyzed, the collection result is shown in fig. 5, and the result meets the product design requirement. And data in the other three states are collected and analyzed, the data collection result is shown in fig. 6, and finally a preset braking force diagnosis model is obtained, and the braking force diagnosis model is shown in table 4.
TABLE 4 Table 4
According to the alarming method for insufficient braking force of the vehicle, which is provided by the embodiment of the application, the deceleration and the displacement of the brake pedal of the vehicle are acquired, the deceleration and the displacement of the brake pedal of the vehicle are input into the preset braking force diagnosis model, the braking force diagnosis result is output, the fact that the braking force of the vehicle does not meet the preset braking requirement is recognized 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 execute alarming action according to the optimal alarming mode. Therefore, the problems that the braking force of a braking system of a vehicle is attenuated along with the use of 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 of insufficient braking pedal force of the whole vehicle is established by collecting and analyzing the whole vehicle acceleration and the braking pedal displacement data, and the user is reminded in an alarm mode.
Next, a braking force shortage warning device of a vehicle according to an embodiment of the present application will be described with reference to the drawings.
Fig. 7 is a block schematic diagram of a braking force shortage warning device of a vehicle of an embodiment of the application.
As shown in fig. 7, the braking force shortage warning device 10 of the vehicle includes: the system comprises an acquisition module 100, an output module 200 and an alarm module 300.
Wherein the acquisition module 100 is used for acquiring the vehicle deceleration and the brake pedal displacement of the vehicle; the output module 200 is configured to input a vehicle deceleration and a brake pedal displacement to a preset braking force diagnosis model, and output a braking force diagnosis result, where the preset braking force diagnosis model is obtained by training braking force data of different working conditions of a vehicle brake system; the alarm module 300 is configured to identify that the braking force of the vehicle does not meet the preset braking requirement according to the braking force diagnosis result, match an optimal alarm mode according to the braking force diagnosis result, and control the vehicle to execute an alarm action according to the optimal alarm mode.
Optionally, in some embodiments, the output module 200 is specifically configured to: judging whether the vehicle deceleration is smaller than the expected deceleration or not through a preset braking force diagnosis model, and judging whether the brake pedal displacement is larger than the preset displacement or not; if the vehicle deceleration is smaller than the expected deceleration and the brake pedal displacement is larger than the preset displacement, outputting a braking force diagnosis result to be the unreliable emergency braking, otherwise, outputting a braking force diagnosis result to be the releasable emergency braking.
Optionally, in some embodiments, the alarm module 300 is specifically configured to: if the braking force diagnosis result is an emergency braking which can be relieved, the optimal alarming mode is acoustic alarming or optical alarming; if the braking force diagnosis result is unreleasable emergency braking, the optimal alarming mode is acoustic alarming and optical alarming.
Optionally, in some embodiments, the output module 200 is further configured to, prior to inputting the vehicle deceleration and brake pedal displacement into the preset braking force diagnostic model: determining various working conditions of the vehicle when braking force is insufficient; collecting 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 a preset braking force diagnosis model.
It should be noted that the explanation of the foregoing embodiment of the method for warning of braking force deficiency of the vehicle is also applicable to the device for warning of braking force deficiency of the vehicle of this embodiment, and will not be repeated here.
According to the braking force shortage alarming device of the vehicle, which is provided by the embodiment of the application, the vehicle deceleration and the brake pedal displacement of the vehicle are acquired, the vehicle deceleration and the brake pedal displacement are input into the preset braking force diagnosis model, the braking force diagnosis result is output, the fact that the braking force of the vehicle does not meet the preset braking requirement is recognized 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 execute alarming action according to the optimal alarming mode. Therefore, the problems that the braking force of a braking system of a vehicle is attenuated along with the use of 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 of insufficient braking pedal force of the whole vehicle is established by collecting and analyzing the whole vehicle acceleration and the braking pedal displacement data, and the user is reminded in an alarm 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 braking force shortage warning method of the vehicle provided in the above-described embodiment when executing the program.
Further, the vehicle further includes:
a communication interface 803 for communication between the memory 801 and the processor 802.
A memory 801 for storing a computer program executable on the processor 802.
The memory 801 may include high-speed RAM memory or may further include non-volatile memory (non-volatile memory), such as at least one magnetic 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 through a bus and perform communication with each other. The bus may be an industry standard architecture (Industry Standard Architecture, abbreviated ISA) bus, an external device interconnect (PERIPHERAL COMPONENT, abbreviated PCI) bus, or an extended industry standard architecture (Extended Industry Standard Architecture, abbreviated EISA) bus, among others. The buses may be divided into address buses, data buses, control buses, etc. For ease of illustration, only one thick line is shown in fig. 8, but not only one bus or one type of bus.
Alternatively, in a specific implementation, if the memory 801, the processor 802, and the communication interface 803 are integrated on a chip, the memory 801, the processor 802, and the communication interface 803 may communicate with each other through internal interfaces.
The processor 802 may be a central processing unit (Central Processing Unit, abbreviated as CPU), or an Application SPECIFIC INTEGRATED Circuit, abbreviated as ASIC, or one or more integrated circuits configured to implement embodiments of the present application.
The embodiment of the application also provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the braking force shortage warning method of a vehicle as above.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," 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 present application. In this specification, schematic representations of the above terms are not necessarily directed 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, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, "N" means at least two, for example, two, three, etc., unless specifically defined 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 specific logical functions or steps of the process, and further 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 the embodiments of the present application.
Logic and/or steps represented in the flowcharts or otherwise described herein, e.g., a ordered listing of executable instructions for implementing 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 cartridge (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). In addition, the computer readable medium may even be paper or other suitable medium on which the program is printed, as the program may 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 is to be understood that portions of the present application may be implemented in hardware, software, firmware, or a combination thereof. In the above-described 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. As with the other embodiments, if implemented in hardware, may be implemented using any one or combination of the following techniques, as is well known in the art: discrete logic circuits having logic gates for implementing logic functions on data signals, application specific integrated circuits having suitable combinational logic gates, programmable Gate Arrays (PGAs), field Programmable Gate Arrays (FPGAs), and the like.
Those of ordinary skill in the art will appreciate that all or a portion of the steps carried out in the method of the above-described embodiments may be implemented by a program to instruct related hardware, where the program may be stored in a computer readable storage medium, and where the program, when executed, includes one or a combination of the steps of the method embodiments.
In addition, each functional unit in the embodiments of the present application may be integrated in one processing module, or each unit may exist alone physically, or two or more units may be integrated in one module. The integrated modules may be implemented in hardware or in software functional modules. The integrated modules may also be stored in a computer readable storage medium if implemented in the form of software functional modules and sold or used as a stand-alone product.
The above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, or the like. While embodiments of the present application have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the application, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the application.
Claims (6)
1. A braking force shortage warning method of a vehicle, characterized by comprising the steps of:
Collecting vehicle deceleration and brake pedal displacement of a vehicle;
Inputting the vehicle deceleration and the brake pedal displacement to a preset braking force diagnosis model, and outputting a braking force diagnosis result, wherein the preset braking force diagnosis model is trained by braking force data of different working conditions of a vehicle braking system;
Identifying that the braking force of the vehicle does not meet a preset braking requirement according to the braking force diagnosis result, matching an optimal alarming mode according to the braking force diagnosis result, and controlling the vehicle to execute alarming action according to the optimal alarming mode;
The step of inputting the vehicle deceleration and the brake pedal displacement to a preset braking force diagnosis model and outputting a braking force diagnosis result comprises the following steps: judging whether the vehicle deceleration is smaller than the expected deceleration or not through the preset braking force diagnosis model, and judging whether the brake pedal displacement is larger than a preset displacement or not; outputting the braking force diagnosis result as non-relieved emergency braking if the vehicle deceleration is smaller than the expected deceleration and the brake pedal displacement is larger than the preset displacement, otherwise outputting the braking force diagnosis result as relieved emergency braking;
Before inputting the vehicle deceleration and the brake pedal displacement to the preset braking force diagnostic model, further comprising: determining a plurality of working conditions of the vehicle when braking force is insufficient; collecting 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 braking force diagnosis model.
2. The method according to claim 1, wherein said matching the best alert mode based on the braking force diagnosis result includes:
if the braking force diagnosis result is the emergency braking which can be relieved, the optimal alarming mode is acoustic alarming or optical alarming;
And if the braking force diagnosis result is the unreleasable emergency braking, the optimal alarming mode is acoustic alarming and optical alarming.
3. A braking force shortage warning device of a vehicle, characterized by 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 into a preset braking force diagnosis model and outputting a braking force diagnosis result, wherein the preset braking force diagnosis model is obtained by training braking force data of different working conditions of a vehicle braking system;
the alarming module is used for recognizing that the braking force of the vehicle does not meet the preset braking requirement according to the braking force diagnosis result, matching an optimal alarming mode according to the braking force diagnosis result, and controlling the vehicle to execute alarming action according to the optimal alarming mode;
The output module is further configured to: judging whether the vehicle deceleration is smaller than the expected deceleration or not through the preset braking force diagnosis model, and judging whether the brake pedal displacement is larger than a preset displacement or not; outputting the braking force diagnosis result as non-relieved emergency braking if the vehicle deceleration is smaller than the expected deceleration and the brake pedal displacement is larger than the preset displacement, otherwise outputting the braking force diagnosis result as relieved emergency braking;
The output module is further configured to, prior to inputting the vehicle deceleration and the brake pedal displacement to the preset braking force diagnostic model: determining a plurality of working conditions of the vehicle when braking force is insufficient; collecting 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 braking force diagnosis model.
4. A device according to claim 3, characterized in that the alarm module is specifically adapted to:
if the braking force diagnosis result is the emergency braking which can be relieved, the optimal alarming mode is acoustic alarming or optical alarming;
And if the braking force diagnosis result is the unreleasable emergency braking, the optimal alarming mode is acoustic alarming and optical alarming.
5. A vehicle, comprising a memory and a processor;
wherein the processor runs a program corresponding to the executable program code by reading the executable program code stored in the memory, for realizing the braking force shortage warning method of a vehicle according to any one of claims 1 to 2.
6. A computer-readable storage medium storing a computer program, characterized in that the program, when executed by a processor, implements the braking force shortage warning method of a vehicle according to any one of claims 1 to 2.
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