CN110712641A - Method and device for detecting functional failure of brake component - Google Patents
Method and device for detecting functional failure of brake component Download PDFInfo
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- CN110712641A CN110712641A CN201910919582.6A CN201910919582A CN110712641A CN 110712641 A CN110712641 A CN 110712641A CN 201910919582 A CN201910919582 A CN 201910919582A CN 110712641 A CN110712641 A CN 110712641A
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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
- B60T17/221—Procedure or apparatus for checking or keeping in a correct functioning condition of brake systems
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Abstract
According to the method and the device for detecting the functional failure of the brake component, provided by the embodiment of the invention, when a vehicle is in a brake component failure detection condition, through the acquired brake signal parameter and the change rate of the vehicle speed in the preset deceleration time period, if the vehicle speed change rate of the vehicle is smaller than the preset vehicle speed change rate, the brake component is determined to be in failure, and a brake component functional failure signal is generated. The method of the embodiment of the invention can detect the failure fault of the brake component in time, generate the failure detection signal of the brake component and prompt the failure detection signal of the brake component, thereby ensuring the braking effect and the driving safety of the vehicle.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to a method and a device for detecting functional failure of a brake component.
Background
In the driving process of the automobile, the brake is generally operated by feet, and after a driver steps on a brake pedal, the brake force is transmitted to a brake device of a wheel through machinery or hydraulic pressure to generate friction, so that the braking effect of the automobile is realized.
However, in the process of daily driving, due to lack of awareness of maintaining the brake system, the braking effect of the brake component can be seriously influenced. If the impurities in the master cylinder are more and the sealing is not tight, the brake system fails temporarily; or the phenomenon of poor braking effect caused by failure of the vacuum booster pump and over-dirty brake oil; or the oil leakage of the master cylinder or the slave cylinder during driving can cause the temporary failure of the brake system.
In order to improve driving safety, a detection method capable of detecting whether the brake function of the brake component fails in time is urgently needed.
Disclosure of Invention
The invention aims to provide a method and a device for detecting functional failure of a brake component, which aim to solve the problem that the driving safety of a vehicle is influenced due to the failure of the brake component.
In a first aspect, the present invention provides a method for detecting a functional failure of a brake component, including:
when the working condition of the vehicle is judged to meet the functional failure detection condition of the brake component, obtaining brake signal parameters;
when the brake signal parameter is detected to be larger than a preset parameter threshold value, acquiring the change rate of the vehicle speed of the vehicle in a preset deceleration time period;
if the change rate of the vehicle speed of the vehicle is smaller than the preset vehicle speed change rate in the preset deceleration time period, generating a brake component function failure signal;
and sending the brake component function failure signal to a display device for fault prompt.
In one possible design, after the generating the brake component malfunction signal, the method further includes:
detecting whether the exhaust brake component functions normally;
and if the exhaust brake part has normal functions, generating an exhaust brake signal according to the brake part function failure signal, wherein the exhaust brake signal is used for braking the vehicle by the exhaust brake part according to the exhaust brake signal.
In one possible design, before it is determined that the vehicle operating condition satisfies the brake component malfunction detection condition, the method further includes:
receiving a driving angle signal sent by an angle sensor;
and if the detected vehicle speed is greater than the preset safe vehicle speed and the driving angle signal is smaller than the preset angle threshold value, judging that the vehicle working condition meets the functional failure detection condition of the brake component.
In one possible design, the brake signal parameter includes a brake signal opening percentage;
when detecting that the percentage of the opening of the brake signal is greater than a preset threshold of the opening of the brake signal, obtaining the change rate of the speed of the vehicle in a preset deceleration time period, including:
and inquiring a first table according to the opening percentage of the brake signal and the vehicle weight to obtain a first preset deceleration time period, and obtaining the change rate of the vehicle speed of the vehicle in the first preset deceleration time period.
In one possible design, the brake signal parameter includes a brake signal rate of change;
when detecting that the brake signal change rate is greater than the preset brake signal change rate threshold value, obtain the change rate of the vehicle speed of vehicle in the preset deceleration time period, include:
and inquiring a second table according to the change rate of the brake signal and the vehicle weight to obtain a second preset deceleration time period, and obtaining the change rate of the vehicle speed of the vehicle in the second preset deceleration time period.
In one possible design, further comprising:
when the brake signal is cancelled or the vehicle speed is reduced to be within the safe speed range, generating an exhaust-closing brake signal;
and sending the exhaust closing brake signal to an exhaust brake component, wherein the exhaust closing brake signal is used for closing the brake of the exhaust brake component on the vehicle.
In a second aspect, an embodiment of the present invention provides a brake component malfunction detection apparatus, where the brake component malfunction detection method according to any one of the first aspects includes:
the first acquisition module is used for acquiring brake signal parameters when the condition of the vehicle is judged to meet the detection condition of functional failure of the brake component;
the second obtaining module is used for obtaining the change rate of the vehicle speed of the vehicle in a preset deceleration time period when the brake signal parameter is detected to be larger than a preset parameter threshold value;
the first generation module is used for generating a brake component function failure signal if the change rate of the vehicle speed of the vehicle is smaller than the preset vehicle speed change rate in the preset deceleration time period;
and the sending module is used for sending the brake component function failure signal to display equipment for fault prompt.
In one possible design, further comprising: the second generation module is specifically used for detecting whether the exhaust brake component is normal in function; and if the exhaust brake part has normal functions, generating an exhaust brake signal according to the brake part function failure signal, wherein the exhaust brake signal is used for braking the vehicle by the exhaust brake part according to the exhaust brake signal.
In a third aspect, an embodiment of the present invention provides a brake component malfunction detection apparatus, including: at least one processor, a memory;
the memory stores computer-executable instructions;
the at least one processor executing the computer-executable instructions stored by the memory causes the at least one processor to perform the brake element failure detection method of any one of the first aspects;
the angle sensor is used for generating a driving angle signal of the vehicle;
the exhaust brake component is used for braking the vehicle according to the exhaust brake signal.
In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, where a computer executes instructions, and when a processor executes the computer to execute the instructions, the method for detecting a functional failure of a brake component according to any one of the first aspect is implemented.
According to the method and the device for detecting the functional failure of the brake component, provided by the embodiment of the invention, when a vehicle is in a brake component failure detection condition, through the acquired brake signal parameter and the change rate of the vehicle speed in the preset deceleration time period, if the vehicle speed change rate of the vehicle is smaller than the preset vehicle speed change rate, the brake component is determined to be in failure, and a brake component functional failure signal is generated. The method of the embodiment of the invention can detect the failure fault of the brake component in time, generate the failure detection signal of the brake component and prompt the failure detection signal of the brake component, thereby ensuring the braking effect and the driving safety of the vehicle.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a schematic diagram of a braking system according to an embodiment of the present invention;
FIG. 2 is a first flowchart of a method for detecting a functional failure of a brake component according to an embodiment of the present invention;
FIG. 3 is a flow chart of a method for detecting a functional failure of a brake component according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a brake component failure detection apparatus according to an embodiment of the present invention;
fig. 5 is a schematic hardware structure diagram of a brake component failure detection device according to an embodiment of the present invention.
Detailed Description
With the above figures, certain embodiments of the invention have been illustrated and described in more detail below. The drawings and the description are not intended to limit the scope of the inventive concept in any way, but rather to illustrate it by those skilled in the art with reference to specific embodiments.
Fig. 1 is a schematic structural diagram of a braking system according to an embodiment of the present invention, as shown in fig. 1: the braking system architecture in the embodiment of the invention comprises: an Electronic Control Unit (ECU) 101, a brake part 102, and an exhaust brake part 103. The ECU101 is connected to the brake unit 102 and the exhaust brake unit 103, respectively, and the ECU101 is responsible for transmitting vehicle brake parameters to the brake unit 102 and the exhaust brake unit 103, respectively, to perform a predetermined vehicle braking function.
The ECU101 is composed of a microprocessor, a memory, an input/output interface, an analog-to-digital converter, and a large-scale integrated circuit such as a shaping circuit and a driving circuit, and is used for connecting a plurality of input/output circuits and monitoring various input data (such as braking, gear shifting and the like) and various running states (acceleration, slipping, oil consumption and the like) of the automobile at any time. The brake part 102 mainly comprises a brake pedal, a vacuum booster, a master cylinder, a branch cylinder and a brake disc, and is a device for realizing forced braking of the automobile to a certain degree by applying pressure to the wheels of the automobile. The exhaust brake unit 103 is a type of auxiliary brake that is configured to increase the pressure of an exhaust stroke by closing a control valve provided in a diesel engine, obtain a braking force by using a negative pressure generated, and automatically contact an exhaust brake when an accelerator pedal or a clutch pedal is depressed.
In some scenes, when a vehicle runs downhill, the surface of a brake pad in a brake part is overheated due to long-time brake treading, so that the friction coefficient of the brake pad is reduced, and the generated friction force is small and cannot meet the requirement of quick braking during downhill running; or the rubber pipeline at the position of the brake cylinder can not transmit force by braking due to aging or leakage caused by external force, so that the braking effect is poor. The invention provides the method for detecting the functional failure of the brake component, so that the failure condition of the brake component can be judged quickly and accurately, and the influence on the driving safety of a vehicle caused by the failure of the brake component can be avoided.
Fig. 2 is a first flowchart of a method for detecting a functional failure of a brake component according to an embodiment of the present invention. The execution subject of the method of the embodiment may be the ECU in fig. 1, as shown in fig. 2, and the brake component malfunction detection method includes the following steps:
s21: and when the condition of the vehicle is judged to meet the condition of detecting the functional failure of the brake component, obtaining brake signal parameters.
When the current vehicle running working condition is judged to be in the brake component function failure detection condition, the situation that the current vehicle possibly has brake component failure is shown, and the failure situation of the brake component can be judged through the obtained brake signal actual parameter value.
In one embodiment of the present invention, before determining at step S21 that the operating condition of the vehicle satisfies the brake element malfunction detection condition, the process further includes determining whether the operating condition of the vehicle satisfies the brake element malfunction detection condition as follows:
receiving a driving angle signal sent by an angle sensor; and if the detected vehicle speed is greater than the preset safe vehicle speed and the driving angle signal is smaller than the preset angle threshold value, judging that the vehicle working condition meets the functional failure detection condition of the brake component.
The angle sensor is used for detecting the current vehicle running angle, and can judge whether the current vehicle is in the process of uphill running, the process of downhill running or on a flat road according to the running angle of the vehicle. If the vehicle is judged to be in the downhill driving process with a large gradient, the vehicle can be in a deceleration braking state for a long time, belongs to the normal braking and deceleration condition and does not belong to the detection condition of the functional failure of the braking part. When the current vehicle is judged to be in flat road running or the gradient of the road surface is smaller than the preset value according to the running angle of the vehicle, if the running speed of the current vehicle is larger than the preset safe vehicle speed, the situation that the vehicle brakes rapidly is shown, and the current vehicle working condition is judged to meet the functional failure detection condition of the braking component.
The condition that whether the vehicle has the brake or not can be judged according to the actual road condition of vehicle running, whether the current vehicle has the emergency brake or not can be judged according to the running speed of the current vehicle, and if the vehicle speed is detected to be greater than the preset safe vehicle speed and the running angle signal of the vehicle is smaller than the preset angle threshold value, the condition that the vehicle working condition meets the functional failure detection condition of the brake component can be accurately judged.
S22: and when the brake signal parameter is detected to be larger than the preset parameter threshold value, acquiring the change rate of the speed of the vehicle in a preset deceleration time period.
If the actual parameter of the braking signal is detected to be larger than the preset parameter, the possibility that the braking component of the vehicle fails currently exists. The change rate of the vehicle speed reduction in the preset deceleration time period is acquired as a reference, and whether the brake part of the vehicle breaks down or not is judged. Wherein the rate of change of the vehicle speed refers to the deceleration magnitude of the vehicle in which the vehicle running speed gradually decreases per unit time.
Specifically, an initial vehicle speed and an end vehicle speed within a preset deceleration time period may be obtained, and a rate of change of the vehicle speed of the vehicle within the preset deceleration time period may be obtained according to a ratio of a difference between the initial vehicle speed and the end vehicle speed to a duration of the preset deceleration time period.
S23: and if the change rate of the vehicle speed of the vehicle is smaller than the preset vehicle speed change rate in the preset deceleration time period, generating a brake part function failure signal.
If the change rate of the vehicle is found to be smaller than the preset vehicle speed change rate in the preset deceleration time period, namely the deceleration of the vehicle during braking is smaller than the preset vehicle speed deceleration and cannot meet the requirement of the minimum deceleration, determining that the current brake component has a failure fault, and generating a brake component failure signal.
S24: and sending the brake component function failure signal to display equipment for fault prompt.
And the generated brake component failure signal is sent to the display equipment, so that a driver is reminded of failure faults of the brake component, the brake mode is replaced in time, and the vehicle brake effect and the driving safety are guaranteed. Wherein the display device may be a vehicle dashboard.
According to the embodiment, when the vehicle is in the brake component failure detection condition, through the acquired brake signal parameters and the change rate of the vehicle speed in the preset deceleration time period, if the change rate of the vehicle speed is smaller than the preset vehicle speed change rate, the brake component is determined to be in failure, and the brake component function failure signal is generated. The method of the embodiment of the invention can detect the failure fault of the brake component in time, generate the failure detection signal of the brake component and prompt the failure detection signal of the brake component, thereby ensuring the braking effect and the driving safety of the vehicle.
Fig. 3 is a flowchart of a method for detecting a functional failure of a brake component according to an embodiment of the present invention. As shown in fig. 3, after the step S24 generates the brake component function failure signal, the method further includes the following steps:
s25: it is detected whether the exhaust brake component functions normally.
Specifically, whether the exhaust brake component functions normally is judged by checking whether the exhaust brake indicator lamp can display normally. If the exhaust brake part receives the exhaust brake signal of the vehicle, the exhaust brake indicator lamp is normally turned on, the vehicle is in an exhaust brake state, and the function of the current exhaust brake part can be judged to be normal.
S26: and if the exhaust brake part is in normal function, generating an exhaust brake signal according to the brake part function failure signal, wherein the exhaust brake signal is used for braking the vehicle by the exhaust brake part according to the exhaust brake signal.
If the exhaust brake part is detected to be in a normal function, if a brake part failure signal is received, the current brake part is determined to have a fault, and the current vehicle is in a dangerous driving condition, the exhaust brake signal is generated according to the received brake part failure signal, and the exhaust brake signal is sent to the exhaust brake part, and the exhaust brake part brakes and decelerates the vehicle in time according to the exhaust brake signal, so that the driving safety of the vehicle is ensured, and the problems of low brake efficiency and poor brake effect caused by the failure of the brake part are solved.
From the above embodiments, exhaust braking is used as an auxiliary braking method, and when a brake component of a vehicle is found to be in failure, the deceleration effect and the driving safety of the vehicle are ensured by using the exhaust brake component to realize vehicle braking.
In one embodiment of the present invention, after generating the brake element malfunction signal, the method further includes:
when the brake signal is cancelled or the vehicle speed is reduced to be within the safe speed range, generating an exhaust-closing brake signal; and sending an exhaust braking closing signal to the exhaust braking part, wherein the exhaust braking closing signal is used for closing the braking of the exhaust braking part on the vehicle.
When the brake signal is cancelled or the vehicle speed is reduced to the safe speed range, the current vehicle is determined to have no requirement of emergency braking, the vehicle is low in running speed and in a safe running state, exhaust braking control is not needed to be additionally carried out, an exhaust closing brake signal is generated and sent to an exhaust braking component, wherein the exhaust closing brake signal is used for closing exhaust braking, and the exhaust braking component closes the exhaust braking control according to the exhaust closing brake signal.
In an embodiment of the present invention, if the braking signal parameter in step S21 includes a braking signal opening percentage, step S22 includes the following steps: when the opening percentage of the brake signal is larger than the preset opening threshold of the brake signal, inquiring a first table according to the opening percentage of the brake signal and the vehicle weight to obtain a first preset deceleration time period, and obtaining the change rate of the vehicle speed of the vehicle in the first preset deceleration time period.
The percentage of the opening degree of the brake signal represents the current braking degree of the vehicle, and if the percentage of the opening degree of the brake signal is zero, the fact that no brake control requirement exists currently is indicated; if the percentage of the opening degree of the brake signal is small, the current deceleration running process with small brake demand is indicated; if the percentage of the opening degree of the braking signal is large, the current deceleration running process with large braking demand is indicated. When the percentage of the detected brake signal opening degree is larger than the preset brake signal opening degree threshold value, whether the current vehicle is in an emergency brake state or not and whether the brake part can work normally or not and whether the vehicle is in a dangerous driving condition or not are determined. The first table can be inquired according to the opening percentage of the current brake signal and the vehicle weight to obtain a first preset deceleration time period, and the change rate of the vehicle speed of the vehicle in the first preset deceleration time period is obtained. The first table is a corresponding table of the percentage of the opening of the brake signal, the vehicle weight and the brake deceleration time, and when the vehicle weight is fixed and the brake component has a normal function, the percentage of the opening of the brake signal and the brake deceleration time are in a one-to-one corresponding relation.
In the above embodiment, the current vehicle speed change rate of the vehicle deceleration can be obtained through a lookup table according to the percentage of the opening degree of the brake signal and the vehicle weight, and if the current vehicle speed change rate is smaller than the preset vehicle speed change rate, it is determined that the brake component is failed. According to the embodiment of the invention, the failure condition of the brake component is detected in time through the real-time driving parameters of the vehicle, so that the fault of the brake component can be quickly and effectively detected, and the safe driving of the vehicle is ensured.
In an embodiment of the present invention, the brake signal parameter in step S21 includes a brake signal change rate, and step S22 includes the following steps: and when the change rate of the brake signal is larger than the preset brake signal opening threshold value, inquiring a second table according to the change rate of the brake signal and the vehicle weight to obtain a second preset deceleration time period, and obtaining the change rate of the vehicle speed of the vehicle in the second preset deceleration time period.
The variation of the opening of the braking signal can be obtained according to the percentage of the opening of the braking signal when the braking signal starts and the percentage of the opening of the braking signal when the braking is finished, and the variation rate of the braking signal can be obtained according to the variation of the opening of the braking signal and the braking time. The larger the change rate of the braking signal is, the larger the current braking demand is, and the vehicle is under the rapid braking control. When the change rate of the brake signal is detected to be larger than the preset brake signal change rate threshold value, whether the current vehicle is in an emergency brake state or not and whether the brake part can work normally or not and whether the vehicle is in a dangerous driving condition or not are determined. The first table can be inquired according to the current brake signal change rate and the vehicle weight to obtain a second preset deceleration time period, and the change rate of the vehicle speed of the vehicle in the second preset deceleration time period is obtained. The second table is a corresponding table of the brake signal change rate, the vehicle weight and the brake deceleration time, and when the vehicle weight is fixed and the brake component has a normal function, the brake signal change rate and the brake deceleration time are in a one-to-one correspondence relationship.
In the above embodiment, the current vehicle speed change rate of the vehicle deceleration can be obtained through a lookup table according to the brake signal change rate and the vehicle weight, and if the current vehicle speed change rate is smaller than the preset vehicle speed change rate, it is determined that the brake component is failed. According to the embodiment of the invention, the failure condition of the brake component is detected in time through the real-time driving parameters of the vehicle, so that the fault of the brake component can be quickly and effectively detected, and the safe driving of the vehicle is ensured.
Fig. 4 is a first schematic structural diagram of the brake component failure detection apparatus according to the embodiment of the present invention. As shown in fig. 4, the brake element malfunction detection apparatus 40 includes: a first acquisition module 401, a second acquisition module 402, a first generation module 403 and a sending module 404.
The first obtaining module 401 is configured to obtain a brake signal parameter when it is determined that the vehicle operating condition meets a brake component functional failure detection condition;
a second obtaining module 402, configured to obtain a change rate of a vehicle speed of the vehicle within a preset deceleration time period when it is detected that the brake signal parameter is greater than a preset parameter threshold;
a first generating module 403, configured to generate a brake component malfunction signal if a rate of change of a vehicle speed of the vehicle is less than a preset vehicle speed rate of change within a preset deceleration time period;
and a sending module 404, configured to send a brake component failure signal to a display device for fault notification.
The apparatus provided in this embodiment may be used to implement the technical solutions of the above method embodiments, and the implementation principles and technical effects are similar, which are not described herein again.
In one embodiment of the present invention, the brake element malfunction detection apparatus further includes:
a determination module, the determination module specifically configured to: receiving a driving angle signal sent by an angle sensor; and if the detected vehicle speed is greater than the preset safe vehicle speed and the driving angle signal is smaller than the preset angle threshold value, judging that the vehicle working condition meets the functional failure detection condition of the brake component.
In an embodiment of the present invention, the brake signal parameters acquired by the first acquiring module 401 include a brake signal opening percentage, and when it is detected that the brake signal opening percentage is greater than a preset brake signal opening threshold, the second acquiring module 402 is specifically configured to: and inquiring a first table according to the opening percentage of the brake signal and the vehicle weight to obtain a first preset deceleration time period, and obtaining the change rate of the vehicle speed of the vehicle in the first preset deceleration time period.
In an embodiment of the present invention, the brake signal parameter acquired by the first acquiring module 401 includes a brake signal change rate, and when it is detected that the brake signal change rate is greater than a preset brake signal change rate threshold, the second acquiring module 402 is specifically configured to: and inquiring a second table according to the change rate of the brake signal and the vehicle weight to obtain a second preset deceleration time period, and obtaining the change rate of the vehicle speed of the vehicle in the second preset deceleration time period.
In one embodiment of the present invention, the brake element malfunction detection apparatus further includes: the third generation module is specifically used for generating an exhaust-off braking signal when the braking signal is cancelled or the vehicle speed is reduced to be within a safe speed range; and sending an exhaust braking closing signal to the exhaust braking part, wherein the exhaust braking closing signal is used for closing the braking of the exhaust braking part on the vehicle.
Fig. 5 is a schematic hardware structure diagram of a brake component failure detection device according to an embodiment of the present invention. As shown in fig. 5, the brake element malfunction detection apparatus 50 of the present embodiment includes: a processor 501, a memory 502, an angle sensor 503, and an exhaust brake component 504; wherein:
A processor 501 for executing computer-executable instructions stored in the memory to implement the steps performed by the ECU101 in the above-described embodiments.
The angle sensor 503 generates a travel angle signal of the vehicle.
And an exhaust brake component 504 for braking the vehicle according to the exhaust brake signal.
Reference may be made in particular to the description relating to the method embodiments described above.
In one possible design, memory 502 may be separate or integrated with processor 501.
When the memory 502 is provided separately, the brake element malfunction detection apparatus further includes a bus 505 for connecting the memory 502 and the processor 501.
The embodiment of the invention also provides a computer-readable storage medium, wherein a computer executing instruction is stored in the computer-readable storage medium, and when a processor executes the computer executing instruction, the method for detecting the functional failure of the brake component is realized.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described device embodiments are merely illustrative, and for example, the division of the modules is only one logical division, and other divisions may be realized in practice, for example, a plurality of modules may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or modules, and may be in an electrical, mechanical or other form.
The modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to implement the solution of the present embodiment.
In addition, functional modules in the embodiments of the present invention may be integrated into one processing unit, or each module may exist alone physically, or two or more modules are integrated into one unit. The unit formed by the modules can be realized in a hardware form, and can also be realized in a form of hardware and a software functional unit.
The integrated module implemented in the form of a software functional module may be stored in a computer-readable storage medium. The software functional module is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) or a processor to execute some steps of the methods described in the embodiments of the present application.
It should be understood that the Processor may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the present invention may be embodied directly in a hardware processor, or in a combination of the hardware and software modules within the processor.
The memory may comprise a high-speed RAM memory, and may further comprise a non-volatile storage NVM, such as at least one disk memory, and may also be a usb disk, a removable hard disk, a read-only memory, a magnetic or optical disk, etc.
The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (Extended Industry Standard Architecture) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, the buses in the figures of the present application are not limited to only one bus or one type of bus.
The storage medium may be implemented by any type or combination of volatile or non-volatile memory devices, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.
An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an Application Specific Integrated Circuits (ASIC). Of course, the processor and the storage medium may reside as discrete components in an electronic device or host device.
Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The program may be stored in a computer-readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A method for detecting a functional failure of a brake component, comprising:
when the working condition of the vehicle is judged to meet the functional failure detection condition of the brake component, obtaining brake signal parameters;
when the brake signal parameter is detected to be larger than a preset parameter threshold value, acquiring the change rate of the vehicle speed of the vehicle in a preset deceleration time period;
if the change rate of the vehicle speed of the vehicle is smaller than the preset vehicle speed change rate in the preset deceleration time period, generating a brake component function failure signal;
and sending the brake component function failure signal to a display device for fault prompt.
2. The method of detecting a failure of a brake element of claim 1, wherein after generating the brake element failure signal, further comprising:
detecting whether the exhaust brake component functions normally;
and if the exhaust brake part has normal functions, generating an exhaust brake signal according to the brake part function failure signal, wherein the exhaust brake signal is used for braking the vehicle by the exhaust brake part according to the exhaust brake signal.
3. The method of claim 1, wherein before determining that the vehicle operating condition satisfies the brake element malfunction detection condition, the method further comprises:
receiving a driving angle signal sent by an angle sensor;
and if the detected vehicle speed is greater than the preset safe vehicle speed and the driving angle signal is smaller than the preset angle threshold value, judging that the vehicle working condition meets the functional failure detection condition of the brake component.
4. The method of detecting a functional failure of a brake element of claim 1, wherein the brake signal parameter comprises a brake signal opening percentage;
when detecting that the percentage of the opening of the brake signal is greater than a preset threshold of the opening of the brake signal, obtaining the change rate of the speed of the vehicle in a preset deceleration time period, including:
and inquiring a first table according to the opening percentage of the brake signal and the vehicle weight to obtain a first preset deceleration time period, and obtaining the change rate of the vehicle speed of the vehicle in the first preset deceleration time period.
5. The method of detecting a functional failure of a brake element of claim 1, wherein the brake signal parameter comprises a brake signal rate of change;
when detecting that the brake signal change rate is greater than the preset brake signal change rate threshold value, obtain the change rate of the vehicle speed of vehicle in the preset deceleration time period, include:
and inquiring a second table according to the change rate of the brake signal and the vehicle weight to obtain a second preset deceleration time period, and obtaining the change rate of the vehicle speed of the vehicle in the second preset deceleration time period.
6. The method of detecting a failure in a brake element of claim 2, further comprising:
when the brake signal is cancelled or the vehicle speed is reduced to be within the safe speed range, generating an exhaust-closing brake signal;
and sending the exhaust closing brake signal to an exhaust brake component, wherein the exhaust closing brake signal is used for closing the brake of the exhaust brake component on the vehicle.
7. A brake element failure detection apparatus, comprising:
the first acquisition module is used for acquiring brake signal parameters when the condition of the vehicle is judged to meet the detection condition of functional failure of the brake component;
the second obtaining module is used for obtaining the change rate of the vehicle speed of the vehicle in a preset deceleration time period when the brake signal parameter is detected to be larger than a preset parameter threshold value;
the first generation module is used for generating a brake component function failure signal if the change rate of the vehicle speed of the vehicle is smaller than the preset vehicle speed change rate in the preset deceleration time period;
and the sending module is used for sending the brake component function failure signal to display equipment for fault prompt.
8. The brake element malfunction detection apparatus of claim 7, further comprising:
the second generation module is specifically used for detecting whether the exhaust brake component is normal in function; and if the exhaust brake part has normal functions, generating an exhaust brake signal according to the brake part function failure signal, wherein the exhaust brake signal is used for braking the vehicle by the exhaust brake part according to the exhaust brake signal.
9. A brake element failure detection apparatus, comprising: at least one processor, memory, an angle sensor, and an exhaust brake component;
the memory stores computer-executable instructions;
the at least one processor executing the computer-executable instructions stored by the memory causes the at least one processor to perform the brake element failure detection method of any one of claims 1 to 6;
the angle sensor is used for generating a driving angle signal of the vehicle;
the exhaust brake component is used for braking the vehicle according to the exhaust brake signal.
10. A computer-readable storage medium having computer-executable instructions stored thereon, which when executed by a processor, implement the brake element malfunction detection method of any one of claims 1 to 6.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111332270A (en) * | 2020-02-27 | 2020-06-26 | 上海钧正网络科技有限公司 | Brake performance judgment method and device, medium, controller and vehicle |
| CN111923893A (en) * | 2020-07-09 | 2020-11-13 | 赛格威科技有限公司 | Brake system fault detection system and method, vehicle and storage medium |
| CN112711229A (en) * | 2020-12-09 | 2021-04-27 | 万洲电气股份有限公司 | Intelligent optimization energy-saving system based on multi-correlation factor energy consumption prediction |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202325863U (en) * | 2011-11-21 | 2012-07-11 | 长安大学 | Emergency parking system for treating braking failure of automobile |
| CN103863293A (en) * | 2013-08-12 | 2014-06-18 | 中国科学院合肥物质科学研究院 | Vehicle parking braking system and control method for same |
| CN104773155A (en) * | 2015-04-01 | 2015-07-15 | 中国计量学院 | Initial failure diagnosis method for automobile braking system |
| CN109159779A (en) * | 2018-08-29 | 2019-01-08 | 中车株洲电力机车有限公司 | A kind of rail vehicle and its braking method, system |
| CN109278734A (en) * | 2018-08-31 | 2019-01-29 | 百度在线网络技术（北京）有限公司 | Vehicle safety control method, device, equipment, storage medium and vehicle |
| KR20190032756A (en) * | 2017-09-20 | 2019-03-28 | 현대모비스 주식회사 | In-wheel system with autonomous emergency braking utility and control method thereof |
| CN110015277A (en) * | 2019-04-24 | 2019-07-16 | 苏州科美澄汽车科技有限公司 | A kind of automotive emergency brake system and control method |
-
2019
- 2019-09-26 CN CN201910919582.6A patent/CN110712641A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202325863U (en) * | 2011-11-21 | 2012-07-11 | 长安大学 | Emergency parking system for treating braking failure of automobile |
| CN103863293A (en) * | 2013-08-12 | 2014-06-18 | 中国科学院合肥物质科学研究院 | Vehicle parking braking system and control method for same |
| CN104773155A (en) * | 2015-04-01 | 2015-07-15 | 中国计量学院 | Initial failure diagnosis method for automobile braking system |
| KR20190032756A (en) * | 2017-09-20 | 2019-03-28 | 현대모비스 주식회사 | In-wheel system with autonomous emergency braking utility and control method thereof |
| CN109159779A (en) * | 2018-08-29 | 2019-01-08 | 中车株洲电力机车有限公司 | A kind of rail vehicle and its braking method, system |
| CN109278734A (en) * | 2018-08-31 | 2019-01-29 | 百度在线网络技术（北京）有限公司 | Vehicle safety control method, device, equipment, storage medium and vehicle |
| CN110015277A (en) * | 2019-04-24 | 2019-07-16 | 苏州科美澄汽车科技有限公司 | A kind of automotive emergency brake system and control method |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111332270A (en) * | 2020-02-27 | 2020-06-26 | 上海钧正网络科技有限公司 | Brake performance judgment method and device, medium, controller and vehicle |
| CN111332270B (en) * | 2020-02-27 | 2021-09-21 | 上海钧正网络科技有限公司 | Brake performance judgment method and device, medium, controller and vehicle |
| CN111923893A (en) * | 2020-07-09 | 2020-11-13 | 赛格威科技有限公司 | Brake system fault detection system and method, vehicle and storage medium |
| CN112711229A (en) * | 2020-12-09 | 2021-04-27 | 万洲电气股份有限公司 | Intelligent optimization energy-saving system based on multi-correlation factor energy consumption prediction |
| CN112711229B (en) * | 2020-12-09 | 2022-06-17 | 万洲电气股份有限公司 | Intelligent optimization energy-saving system based on multi-correlation factor energy consumption prediction |
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