CN111923893A - Brake system fault detection system and method, vehicle and storage medium - Google Patents
Brake system fault detection system and method, vehicle and storage medium Download PDFInfo
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- CN111923893A CN111923893A CN202010658209.2A CN202010658209A CN111923893A CN 111923893 A CN111923893 A CN 111923893A CN 202010658209 A CN202010658209 A CN 202010658209A CN 111923893 A CN111923893 A CN 111923893A
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- brake
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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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- 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
- B60T7/00—Brake-action initiating means
- B60T7/02—Brake-action initiating means for personal initiation
- B60T7/04—Brake-action initiating means for personal initiation foot actuated
- B60T7/06—Disposition of pedal
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- Mechanical Engineering (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The application discloses braking system fault detection system and method, fault detection system includes: the brake pressure detection module is used for detecting the pressure of the brake system and generating a brake pressure signal based on the detected pressure of the brake system; the deceleration detection module is used for detecting the braking deceleration of the vehicle and generating a braking deceleration signal based on the braking deceleration; a brake failure detection module for determining whether a brake system of a vehicle has a fault based on the brake pressure signal and the brake deceleration signal; generating a brake system fault signal upon determining that a fault exists in the brake system.
Description
Technical Field
The embodiment of the application relates to the field of vehicles, in particular to a brake system fault detection system and method, a vehicle and a storage medium.
Background
All-terrain vehicles refer to vehicles capable of traveling on any terrain and capable of freely traveling on terrains where ordinary vehicles are difficult to maneuver, and are commonly called beach vehicles. The following problems exist with respect to the determination of brake system failure for all-terrain vehicles: after the brake system of the used all-terrain vehicle breaks down and generates a certain condition, a driver can only realize that the brake system really generates a problem, and the real condition of the brake system of the all-terrain vehicle cannot be reflected in time by the processing mode, so that safety accidents are easily caused; in the prior art, whether the braking force is invalid or not is judged mainly by detecting the liquid level height change of the braking oil cup, and the judgment mode is low in accuracy and easy for a driver to judge by mistake.
Disclosure of Invention
In order to solve the technical problem, embodiments of the present application provide a brake system fault detection system and method, a vehicle, and a storage medium.
The embodiment of the application provides a braking system fault detection system, braking system fault detection system is applied to the vehicle, braking system fault detection system includes:
the brake pressure detection module is used for detecting the pressure of the brake system and generating a brake pressure signal based on the detected pressure of the brake system;
the deceleration detection module is used for detecting the braking deceleration of the vehicle and generating a braking deceleration signal based on the braking deceleration;
a brake failure detection module for determining whether a brake system of a vehicle has a fault based on the brake pressure signal and the brake deceleration signal; generating a brake system fault signal upon determining that a fault exists in the brake system.
In an optional embodiment of the application, the brake failure detection module is specifically configured to determine whether a target corresponding relationship is satisfied between the brake pressure signal and the brake deceleration signal, and if not, determine that a brake system has a fault and generate a brake system fault signal; wherein the target correspondence is a correspondence between the brake pressure signal and the brake deceleration signal when there is no fault in the brake system.
In an optional embodiment of the application, the brake failure detection module is further configured to determine a target correspondence relationship based on a running speed of the vehicle and/or a road surface condition on which the vehicle runs before determining whether the target correspondence relationship is satisfied between the brake pressure signal and the brake deceleration signal;
and if the running speeds are different and/or the road surface conditions are different, the target corresponding relations are different.
In an optional embodiment of the present application, the brake pressure detection module is specifically configured to generate a brake pressure signal when the pressure of the brake system reaches a pressure threshold;
the deceleration detection module is specifically configured to generate a brake deceleration signal when the brake deceleration reaches a deceleration threshold.
In an optional embodiment of the present application, the brake failure detection module is specifically configured to determine whether the brake pressure signal and the brake deceleration signal occur simultaneously; and if the two events do not occur simultaneously, determining that the brake system has a fault.
In an optional embodiment of the present application, the deceleration detection module is further configured to determine the deceleration threshold based on a running speed of the vehicle and/or a road surface condition on which the vehicle runs.
In an alternative embodiment of the present application, the vehicle has a brake operating member and a position switch;
the brake pressure detection module is specifically used for generating a brake pressure signal when the position switch is triggered by the position of the brake control component;
the deceleration detection module is specifically used for generating a braking deceleration signal when the position of the braking operation component triggers the position switch.
In an optional embodiment of the present application, the brake failure detection module is specifically configured to determine whether a target corresponding relationship is satisfied between the brake pressure signal and the brake deceleration signal when the position of the brake operating member triggers the position switch, and if not, determine that a brake system has a fault, and generate a brake system fault signal.
In an alternative embodiment of the present application, the braking system includes: the brake system comprises a brake pump and a brake pipeline connected with the brake pump;
the brake pressure detection module is specifically configured to detect a pressure of the brake pump or a pressure of the brake pipe, and generate a brake pressure signal based on the detected pressure of the brake pump or the brake pipe.
In an alternative embodiment of the present application, the braking system includes: n brake lines; n is an integer greater than or equal to 1;
the brake pressure detection module is specifically configured to detect pressures of the N brake pipes, respectively, and generate N brake pressure signals based on the detected pressures of the N brake pipes;
the brake failure detection module is specifically configured to determine whether the brake deceleration signal and any one of the N brake pressure signals all satisfy a target correspondence relationship, and if the brake deceleration signal and any one of the N brake pressure signals do not satisfy the target correspondence relationship, determine whether a brake system has a fault, and generate a brake system fault signal; wherein the target correspondence is a correspondence between the brake pressure signal and the brake deceleration signal when there is no fault in the brake system.
In an optional embodiment of the present application, the brake system fault detection system further includes:
and the alarm module is used for outputting prompt information based on the brake system fault signal, and the prompt information is used for prompting the brake system fault.
The embodiment of the application also provides a brake system fault detection method, which is applied to a vehicle and comprises the following steps:
detecting a pressure of the brake system and generating a brake pressure signal based on the detected pressure of the brake system;
detecting a braking deceleration of the vehicle and generating a braking deceleration signal based on the braking deceleration;
determining whether a brake system of a vehicle has a fault based on the brake pressure signal and the brake deceleration signal; generating a brake system fault signal upon determining that a fault exists in the brake system.
In an optional embodiment of the present application, the determining whether a brake system of a vehicle has a fault based on the brake pressure signal and the brake deceleration signal, and generating a brake system fault signal in the case where it is determined that the brake system has a fault, includes:
determining whether the brake pressure signal and the brake deceleration signal meet a target corresponding relation, if not, determining that a brake system has a fault, and generating a brake system fault signal; wherein the target correspondence is a correspondence between the brake pressure signal and the brake deceleration signal when there is no fault in the brake system.
In an optional embodiment of the present application, the method further comprises:
determining a target correspondence relationship based on a traveling speed of the vehicle and/or a road surface condition on which the vehicle travels, before determining whether the target correspondence relationship is satisfied between the brake pressure signal and the brake deceleration signal;
and if the running speeds are different and/or the road surface conditions are different, the target corresponding relations are different.
In an optional embodiment of the present application, the detecting the pressure of the brake system and generating the brake pressure signal based on the detected pressure of the brake system includes:
generating a brake pressure signal when a pressure of the brake system reaches a pressure threshold;
the detecting a braking deceleration of the vehicle and generating a braking deceleration signal based on the braking deceleration includes:
a brake deceleration signal is generated when the brake deceleration reaches a deceleration threshold.
In an optional embodiment of the present application, the determining whether a brake system of a vehicle has a fault based on the brake pressure signal and the brake deceleration signal includes:
determining whether the brake pressure signal and the brake deceleration signal occur simultaneously; and if the two events do not occur simultaneously, determining that the brake system has a fault.
In an optional embodiment of the present application, the method further comprises:
the deceleration threshold is determined based on a running speed of the vehicle and/or a road surface condition on which the vehicle runs.
In an alternative embodiment of the present application, the vehicle has a brake operating member and a position switch;
the detecting pressure of the brake system and generating a brake pressure signal based on the detected pressure of the brake system includes:
generating a brake pressure signal when the position of the brake operating member triggers the position switch;
the detecting a braking deceleration of the vehicle and generating a braking deceleration signal based on the braking deceleration includes:
a brake deceleration signal is generated when the position of the brake actuating member triggers the position switch.
In an optional embodiment of the present application, the determining whether a brake system of a vehicle has a fault based on the brake pressure signal and the brake deceleration signal, and generating a brake system fault signal in the case where it is determined that the brake system has a fault, includes:
and determining whether the brake pressure signal and the brake deceleration signal meet a target corresponding relation when the position of the brake operating part triggers the position switch, if not, determining that the brake system has a fault, and generating a brake system fault signal.
In an alternative embodiment of the present application, the braking system includes: the brake system comprises a brake pump and a brake pipeline connected with the brake pump; the detecting pressure of the brake system and generating a brake pressure signal based on the detected pressure of the brake system includes:
the method includes detecting a pressure of the brake pump or a pressure of the brake pipe, and generating a brake pressure signal based on the detected pressure of the brake pump or the brake pipe.
In an alternative embodiment of the present application, the braking system includes: n brake lines; n is an integer greater than or equal to 1;
the detecting pressure of the brake system and generating a brake pressure signal based on the detected pressure of the brake system includes:
respectively detecting the pressure of the N brake pipelines, and generating N brake pressure signals based on the detected pressure of the N brake pipelines;
the determining whether a brake system of a vehicle has a fault based on the brake pressure signal and the brake deceleration signal, and generating a brake system fault signal in the event that the brake system has a fault is determined, includes:
determining whether the brake deceleration signal and any one of the N brake pressure signals meet a target corresponding relationship, if the brake deceleration signal and any one of the N brake pressure signals do not meet the target corresponding relationship, judging whether a brake system has a fault, and generating a brake system fault signal; wherein the target correspondence is a correspondence between the brake pressure signal and the brake deceleration signal when there is no fault in the brake system.
In an optional embodiment of the present application, the method further comprises:
and outputting prompt information based on the brake system fault signal, wherein the prompt information is used for prompting the brake system fault.
The present application further provides a vehicle including a brake system fault detection system as described in any one of the above.
The present application also provides a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements a brake system fault detection method as described in any one of the above.
According to the technical scheme of the embodiment of the application, a brake system fault detection system is provided, and the brake system fault detection system comprises: the brake pressure detection module is used for detecting the pressure of the brake system and generating a brake pressure signal based on the detected pressure of the brake system; the deceleration detection module is used for detecting the braking deceleration of the vehicle and generating a braking deceleration signal based on the braking deceleration; a brake failure detection module for determining whether a brake system of a vehicle has a fault based on the brake pressure signal and the brake deceleration signal; generating a brake system fault signal upon determining that a fault exists in the brake system. So, can utilize brake pressure signal and braking deceleration signal, based on the comparison and the matching between above two kinds of signals, determine whether the braking system of vehicle has the trouble for the user can be when braking system breaks down or the earlier stage that breaks down, in time through the braking system fault signal confirm that the braking system of vehicle has broken down, thereby improve the passive safety of vehicle, reduce the risk that the vehicle brake is out of control, reduce user's loss of property.
Drawings
Fig. 1 is a first schematic structural component diagram of a brake system fault detection system provided in an embodiment of the present application;
FIG. 2 is a first schematic diagram of a brake system fault detection system provided in an embodiment of the present application;
fig. 3 is a schematic structural composition diagram ii of a brake system fault detection system provided in the embodiment of the present application;
FIG. 4 is a schematic diagram of a brake system fault detection system provided by an embodiment of the present application;
fig. 5 is a schematic structural composition diagram three of a brake system fault detection system provided in the embodiment of the present application;
FIG. 6 is a schematic structural diagram of a brake system fault detection system provided in the embodiment of the present application;
FIG. 7 is a schematic diagram III of a brake system fault detection system provided by an embodiment of the present application;
FIG. 8 is a schematic flow chart of a method for detecting a failure in a brake system according to an embodiment of the present application.
Detailed Description
So that the manner in which the features and elements of the present embodiments can be understood in detail, a more particular description of the embodiments, briefly summarized above, may be had by reference to embodiments, some of which are illustrated in the appended drawings.
The brake system fault detection system and method provided by the embodiment of the application can be applied to various types of vehicles such as two-wheel motorcycles, three-wheel motorcycles, four-wheel motorcycles, snowmobiles, all-terrain vehicles and the like. The embodiment of the present application will take an all-terrain vehicle as an example to illustrate the technical solution of the embodiment of the present application.
Fig. 1 is a schematic structural composition diagram of a brake system fault detection system provided in an embodiment of the present application, where the brake system fault detection system is applied to a vehicle, and as shown in fig. 1, the brake system fault detection system includes:
a brake pressure detection module 10, configured to detect a pressure of the brake system and generate a brake pressure signal based on the detected pressure of the brake system;
a deceleration detection module 11 for detecting a braking deceleration of the vehicle and generating a braking deceleration signal based on the braking deceleration;
a brake failure detection module 12 for determining whether a brake system of the vehicle has a fault based on the brake pressure signal and the brake deceleration signal; generating a brake system fault signal upon determining that a fault exists in the brake system.
In the embodiment of the present application, the detection of the pressure of the brake system is realized by the brake pressure detection module 10.
Here, the brake system includes: the brake system comprises a brake pump and a brake pipeline connected with the brake pump;
the brake pressure detection module 10 is specifically configured to detect a pressure of the brake pump or a pressure of the brake pipe, and generate a brake pressure signal based on the detected pressure of the brake pump or the brake pipe.
In the embodiment of the application, the detection of the pressure of the brake pump can be the detection of the pressure output by the brake pump, and can also be the detection of the pressure inside the brake pump. Fig. 2 is a first schematic diagram of a brake system fault detection system provided in an embodiment of the present application, and in fig. 2, detection of internal pressure of the brake pump 22 or output pressure of the brake pump 22 is implemented by a brake pressure sensing module 101 in the brake pressure detection module 10.
In an embodiment of the present application, the brake system includes: n brake lines; n is an integer greater than or equal to 1;
the brake pressure detection module 10 is specifically configured to detect pressures of the N brake pipes, respectively, and generate N brake pressure signals based on the detected pressures of the N brake pipes.
In fig. 2, the pressure of the N brake lines is detected by the brake pressure sensing module 102, the brake pressure sensing module 103, the brake pressure sensing module 104, and the like in the brake pressure detection module 10.
Here, for a plurality of brake pressure sensing modules for detecting the pressures of N brake pipes, that is, a plurality of brake pressure sensing modules such as the brake pressure sensing module 102, the brake pressure sensing module 103, and the brake pressure sensing module 104, the plurality of brake pressure sensing modules may transmit the pressures of the corresponding brake pipes detected by the plurality of brake pressure sensing modules to the brake failure detection module 12, respectively, and may also collectively and collectively transmit the pressures of the corresponding brake pipes detected by the plurality of brake pressure sensing modules, respectively, to one pressure monitoring module 105, that is, the pressure monitoring module 105 is disposed between the plurality of brake pressure sensing modules 101 and the brake failure detection module 12, and the pressure monitoring module 105 transmits the signals of the plurality of brake pressure sensing modules to the brake failure detection module 12 after the signals of the plurality of brake pressure sensing modules are collectively or processed.
In the embodiment of the present application, the detection of the deceleration of the braking process of the vehicle is realized by the deceleration detection module 11.
Through the operation of the brake operating component by a user and the action of a brake system consisting of the brake pump, the brake pipe, the brake cylinder, the brake pads and the like, the running speed of the vehicle can be reduced, and the embodiment of the application can realize the detection of the deceleration of the braking process of the vehicle by arranging the deceleration detection module 11, wherein the deceleration detection module 11 specifically comprises an acceleration sensor, and can output a corresponding braking deceleration signal based on the detected deceleration of the braking process of the vehicle.
In the embodiment of the present application, the determination of whether the brake system of the vehicle has a fault based on the two signals, i.e., the brake pressure signal and the brake deceleration signal, is realized by the brake failure detection module 12.
In one embodiment, the brake failure detection module 12 is specifically configured to determine whether a target correspondence relationship is satisfied between the brake pressure signal and the brake deceleration signal, and if not, determine that a brake system has a fault and generate a brake system fault signal; wherein the target correspondence is a correspondence between the brake pressure signal and the brake deceleration signal when there is no fault in the brake system.
Specifically, in the stage of testing the brake system, the pressure and the braking deceleration of the brake system are tested, so that the corresponding relationship between the pressure and the braking deceleration of the brake system is obtained under the condition that the brake system of the vehicle has no fault, and accordingly, the purpose of braking the vehicle according to the braking intention of a user can be realized only if the corresponding relationship is satisfied between the brake pressure signal and the braking deceleration signal.
Table 1 is a first mapping table of the brake pressure signal and the brake deceleration signal provided in the embodiment of the present application, and as shown in table 1, when the brake pressure signal corresponding to the brake system is yn, the brake deceleration signal is an.
TABLE 1 correspondence of brake pressure signal and brake deceleration signal TABLE I
| Brake pressure signal | y1 | y2 | y3 | … | yn |
| Brake deceleration signal | a1 | a2 | a3 | … | an |
It should be noted that there may be an error in the detection of the pressure of the brake system by the brake pressure detection module 10, and there may also be an error in the detection of the brake deceleration by the deceleration detection module 11. In addition, since each component in the brake system may wear during use, but the wear is not so great as to cause the brake system to fail to perform the braking process normally, the correspondence relationship between the brake pressure signal and the brake deceleration signal cannot be established only by specific values, but the correspondence relationship between the value range of the brake pressure signal and the value range of the brake deceleration signal is determined separately, so as to establish the correspondence relationship table between the brake pressure signal and the brake deceleration signal.
Table 2 is a second mapping table between the brake pressure signal and the brake deceleration signal provided in the embodiment of the present application, and as shown in table 2, when the value of the brake pressure signal corresponding to the brake system belongs to the interval Yn, the value of the brake deceleration signal belongs to the interval An. Yn and An in table 2 are not specific values, but represent ranges of values, respectively.
TABLE 2 correspondence table II of brake pressure signal and brake deceleration signal
| Brake pressure signal | Y1 | Y2 | Y3 | … | Yn |
| Brake deceleration signal | A1 | A2 | A3 | … | An |
After the brake failure detection module 12 obtains the brake pressure signal and the brake deceleration signal respectively, it can determine that the brake system has a fault by determining whether the two signals satisfy the correspondence in table 2, if not.
Here, the brake pressure signal in table 2 may be a brake pressure signal corresponding to the pressure of the brake pump, or may be a brake pressure signal corresponding to the pressure of the brake pipe. It should be noted that, since the pressure of the brake pump and the pressure of the brake pipe are equal during the braking process of the vehicle, for the detection of the pressure of the brake system, no matter the pressure of the brake pump or the pressure of the brake pipe is detected, the brake failure detection module 12 can determine whether the brake system has a fault based on the corresponding relationship in table 2.
In this embodiment of the application, the brake failure detection module 12 is specifically configured to determine whether the brake deceleration signal and any one of the N brake pressure signals satisfy a target correspondence relationship, and if the brake deceleration signal and any one of the N brake pressure signals do not satisfy the target correspondence relationship, determine whether a brake system has a failure, and generate a brake system failure signal, when the brake pressure detection module 10 is configured to detect pressures of the N brake lines, and generate the N brake pressure signals based on the detected pressures of the N brake lines; wherein the target correspondence is a correspondence between the brake pressure signal and the brake deceleration signal when there is no fault in the brake system.
In an optional embodiment of the present application, the brake failure detection module 12 is further configured to determine a target corresponding relationship based on a running speed of the vehicle and/or a road surface condition on which the vehicle runs before determining whether the target corresponding relationship is satisfied between the brake pressure signal and the brake deceleration signal; and if the running speeds are different and/or the road surface conditions are different, the target corresponding relations are different.
In one embodiment, when the vehicle is braked, the traveling speed of the vehicle may be different, and therefore, when the pressure of the brake system is the same, the deceleration of the vehicle may be different. Illustratively, when the vehicle is operating at 100 km/hr and 60 km/hr, respectively, the user operates the brake pedal 20 the same way so that the braking system has the same pressure, but the braking deceleration of the vehicle is not the same, which may be-10 m/sec2The braking deceleration of the latter may be-6 m/s2Therefore, when the target correspondence relationship is considered, the target correspondence relationship may be determined based on the traveling speed of the vehicle, taking the traveling speed of the vehicle at the time of starting braking as a consideration. Here, the purpose based on the speed factorThe mapping relationship is obtained when the brake system of the vehicle is tested and is stored in the memory of the vehicle in advance.
In another embodiment, the deceleration of the vehicle may vary when the pressure of the brake system is the same, due to the fact that the condition of the road surface on which the vehicle is traveling varies when the vehicle is braked. Illustratively, the user operates the brake pedal 20 the same way to apply the same pressure to the braking system, but at a different braking deceleration rate, when the vehicle is traveling on concrete and ice, respectively. The former braking deceleration may be that the former braking deceleration may be-10 m/s2The braking deceleration of the latter may be-6 m/s2Therefore, when the target correspondence relationship is considered, the target correspondence relationship may be determined based on the road surface condition on which the vehicle is traveling, taking the road surface condition on which the vehicle is currently traveling as a consideration. Here, the target correspondence relationship based on the road surface condition factor is obtained when the brake system of the vehicle is tested, and is stored in advance in the memory of the vehicle.
In another embodiment, the target correspondence relationship may be determined by combining two factors of the traveling speed of the vehicle and the traveling road surface condition, and similarly, the target correspondence relationship based on the two factors of the traveling speed and the road surface condition of the vehicle is obtained when the brake system of the vehicle is tested and is stored in the memory of the vehicle in advance.
In the embodiment of the application, the running speed of the vehicle and/or the road condition on which the vehicle runs are considered when the target corresponding relation is determined, and whether a brake system of the vehicle has a fault or not can be judged more accurately by utilizing the corresponding target corresponding relation and combining a driving scene when the vehicle brakes under the condition that the running speed of the vehicle and/or the road condition on which the vehicle runs are different.
The principle of the brake system failure detection system provided in the embodiment of the present application will be described below with a brake operating member as a brake pedal. It should be noted that the brake operating member of the embodiment of the present application is not limited to the brake pedal, but may be a brake lever and other various types of brake operating members that can be operated by a user.
As shown in fig. 2, the user indicates the intention of the vehicle to slow down or stop by pressing the brake pedal 20 during the running of the vehicle, and when the brake pedal 20 is pressed, the brake pedal 20 pushes the brake pump 22 to move by a lever, so that the piston in the brake pump 22 pushes the brake oil forward and generates pressure in the brake pipe (not shown in the figure). The pressure is transmitted to the piston of the wheel cylinder (not shown in the figure) of each wheel through the brake pipeline, and the piston of the wheel cylinder pushes the brake pad outwards again, so that the brake pad and the inner surface of the brake drum are rubbed, and sufficient friction force is generated to reduce the rotating speed of the wheels, thereby achieving the purpose of braking. The pressure of the brake pump 22 is detected by a brake pressure sensing module 101 in the brake pressure detection module 10, and a brake pressure signal corresponding to the brake pump 22 is generated; alternatively, the brake pressure sensing module 101, and the like in the brake pressure detecting module 10 detect the pressures of the N brake lines, and generate N brake pressure signals corresponding to the N brake lines. Here, only one brake pressure sensing module may be provided in the brake pressure detection module 10, and the brake pressure sensing module is configured to detect the pressure of the brake pump 22 or the pressure of one of the N brake lines.
Through the operation of the brake operating component by a user and the action of a brake system consisting of the brake pump, the brake pipeline, the brake cylinder, the brake pads and the like, the running speed of the vehicle can be reduced. The detection of the deceleration of the vehicle braking process by the deceleration detection module 11 and the output of a corresponding brake deceleration signal is based on the detected deceleration of the vehicle braking process.
After receiving the brake pressure signal output by the brake pressure detection module 10 and the brake deceleration signal output by the deceleration detection module 11, the brake failure detection module 12 determines that the brake system of the vehicle has a failure by determining whether the brake pressure signal and the brake deceleration signal satisfy the target corresponding relationship in table 2, and in a case where it is determined that the brake pressure signal and the brake deceleration signal do not satisfy the target corresponding relationship in table 2, and then generates a brake system failure signal.
According to the technical scheme, whether the braking system of the vehicle has a fault or not is determined by utilizing the braking pressure signal and the braking deceleration signal and based on whether the target corresponding relation is met between the two signals, so that a user can determine that the braking system of the vehicle has the fault through the braking system fault signal in time when the braking system has the fault or in the earlier stage of the fault, the passive safety of the vehicle is improved, the risk of out-of-control braking of the vehicle is reduced, and the property loss of the user is reduced.
Fig. 3 is a schematic structural diagram of a second fault detection system of a braking system according to an embodiment of the present disclosure, and fig. 4 is a schematic diagram of the second fault detection system of the braking system according to the embodiment of the present disclosure, and as shown in fig. 3 and fig. 4, the brake pressure detection module 10 may be specifically a switch module (i.e., a brake pressure detection switch 100); the deceleration detection module 11 may also be embodied as a switch module (i.e., deceleration detection switch 110).
Here, it can be understood that, for the brake pressure detection switch 100, the brake pressure detection module 10 generates and outputs the brake pressure signal after the pressure of the brake system reaches a specific set pressure threshold value, or after other conditions that trigger the brake pressure detection module 10 to generate and output the brake pressure signal are met; it is understood for deceleration detection switch 110 that deceleration detection module 11 generates and outputs a brake deceleration signal after the brake deceleration reaches a specific set brake deceleration threshold, or after other conditions are met that trigger deceleration detection module 11 to generate and output a brake deceleration signal.
The technical solution of a specific embodiment of the present application is described below based on the brake system failure detection system shown in fig. 3.
In an optional embodiment of the present application, the brake pressure detection module 10 is specifically configured to generate a brake pressure signal when the pressure of the brake system reaches a pressure threshold;
the deceleration detection module 11 is specifically configured to generate a brake deceleration signal when the brake deceleration reaches a deceleration threshold.
Here, the brake pressure detecting module 10 is specifically a switch module: a brake pressure detection switch 100. The brake pressure detection switch 100 generates and outputs a brake pressure signal when detecting that the pressure of the brake system reaches a pressure threshold value.
The deceleration detection module 11 is embodied as a switching module: the deceleration detection switch 110. The deceleration detection switch 110 generates and outputs a brake deceleration signal when detecting that the brake deceleration of the vehicle reaches a deceleration threshold value.
Here, if the pressure of the brake system does not reach the pressure threshold value, the brake pressure detection switch 100 does not output the brake pressure signal; if the brake deceleration does not reach the deceleration threshold, the deceleration detection switch 110 does not output the brake deceleration signal either. The deceleration threshold value and the pressure threshold value here satisfy a correspondence relationship that when the brake pressure reaches the pressure threshold value while the brake system is not malfunctioning, the brake deceleration reaches the deceleration threshold value at the same time. Therefore, when the brake pressure detection module 10 detects that the pressure of the brake system reaches the pressure threshold and generates the brake pressure signal, the deceleration detection module 11 also detects that the brake deceleration reaches the deceleration threshold and generates the brake deceleration signal.
In an alternative embodiment of the present application, the deceleration detection module 11 is further configured to determine the deceleration threshold value based on a running speed of the vehicle and/or a road surface condition on which the vehicle runs.
In one embodiment, when braking the vehicle, the traveling speed of the vehicle may be different, which may cause the deceleration of the vehicle to be different when the brake system pressure is the same. Illustratively, when the vehicle is operating at 100 km/hr and 60 km/hr, respectively, the user operates the brake pedal the same, so that the brake system generates the same pressure, but the braking deceleration of the vehicle is not the same, which may be-10 m/sec2The braking deceleration of the latter may be-6 m/s2Therefore, the current running speed of the vehicle can be taken into consideration,a deceleration threshold value that matches the pressure threshold value is determined based on the travel speed of the vehicle. Here, the deceleration threshold determined based on the speed factor is obtained when the brake system of the vehicle is tested and stored in advance in the memory of the vehicle.
In another embodiment, the deceleration of the vehicle may vary when the brake system pressure is the same, due to the fact that the vehicle is braked differently on the road surface on which the vehicle is traveling. Illustratively, the user operates the brake pedal 20 the same to cause the brake system to generate the same pressure, but at a different braking deceleration rate, when the vehicle is traveling on concrete and ice, respectively. The former braking deceleration may be that the former braking deceleration may be-10 m/s2The braking deceleration of the latter may be-6 m/s2Therefore, the deceleration threshold value that matches the pressure threshold value may be determined based on the road surface condition on which the vehicle is traveling, taking the road surface condition on which the vehicle is currently traveling as a consideration. Here, the deceleration threshold determined based on the road surface condition factor on which the vehicle is running is obtained when the brake system of the vehicle is tested and stored in advance in the memory of the vehicle.
In another embodiment, the deceleration threshold matching the pressure threshold may be determined in combination with both the traveling speed of the vehicle and the traveling road surface condition, and similarly, the deceleration threshold determined based on both the traveling speed of the vehicle and the road surface condition is obtained when the brake system of the vehicle is tested and stored in the memory of the vehicle in advance.
Here, considering the traveling speed of the vehicle and/or the road surface condition on which the vehicle travels when determining the deceleration threshold value, it is possible to more accurately determine whether or not there is a failure in the brake system of the vehicle in conjunction with a specific driving scenario at the time of braking by using the respective deceleration threshold values in the case where the traveling speed of the vehicle and/or the road surface condition on which the vehicle travels are different.
In an alternative embodiment of the present application, it is specifically configured to determine whether the brake pressure signal and the brake deceleration signal occur simultaneously; and if the two events do not occur simultaneously, determining that the brake system has a fault.
Specifically, if the time at which the brake pressure detection switch 100 outputs the brake pressure signal and the time at which the deceleration detection switch 110 outputs the brake deceleration signal are not the same, i.e., the brake pressure signal and the brake deceleration signal are not generated at the same time, the brake failure detection module 12 may determine that the brake system of the vehicle is malfunctioning.
In the embodiment of the present application, a time difference threshold may be set, and if the time interval between the occurrence and disappearance of the two signals is smaller than the set time difference threshold, the two signals may be considered to occur simultaneously.
In the embodiment of the present application, the situation that the braking pressure detection module 10 and the braking deceleration detection module 11 are both switch modules is suitable for a scenario that does not require to perform a particularly high-precision detection on the braking system, such a processing manner is simpler than a manner that two detection modules are used to perform a real-time detection and transmit two signals to the braking failure detection module 12 in real time, and then the braking failure detection module 12 determines whether the braking system has a fault, and is suitable for a scenario that does not require to obtain and determine in real time whether the braking pressure signal and the braking deceleration signal satisfy a corresponding relationship, thereby determining whether the braking system has a fault.
It should be noted that the brake pressure detection module 10 and the deceleration detection module 11 output corresponding signals after certain trigger conditions are met, or the forms of detecting and generating corresponding signals in real time may be combined arbitrarily. That is, when the brake pressure detection module 10 detects and generates a brake pressure signal in real time, the deceleration detection module 11 may output the brake deceleration signal after a certain trigger condition is met, or when the brake pressure detection module 10 outputs the brake pressure signal after a certain trigger condition is met, the deceleration detection module 11 may detect and generate the brake deceleration signal in real time.
According to the technical scheme of the embodiment of the application, a brake pressure signal is generated by utilizing the brake pressure detection module 10 when the pressure of a brake system reaches a pressure threshold value; with the deceleration detection module 11, a brake deceleration signal is generated when the brake deceleration reaches a deceleration threshold. By judging whether the two signals occur simultaneously or not, the fault of the brake system can be determined under the condition that the two signals do not occur simultaneously. The user can determine that the brake system of the vehicle breaks down in time through the brake system fault signal when the brake system breaks down or in the early stage of breaking down, so that the passive safety of the vehicle is improved, the risk of out-of-control brake of the vehicle is reduced, and the property loss of the user is reduced. The technical solution of another embodiment of the present application is described below based on the brake system failure detection system shown in fig. 3.
In an alternative embodiment of the present application, the vehicle has a brake operating member and a position switch;
the brake pressure detection module 10 is specifically configured to generate a brake pressure signal when the position of the brake operating component triggers the position switch;
the deceleration detection module 11 is specifically configured to generate a braking deceleration signal when the position of the brake operating member triggers the position switch.
Here, the brake pressure detecting module 10 is specifically a switch module: a brake pressure detection switch 100. The brake pressure detection switch 100 generates and outputs a brake pressure signal when detecting that the position of the brake operating member triggers the position switch.
The deceleration detection module 11 is embodied as a switching module: the deceleration detection switch 110. The deceleration detection switch 110 generates and outputs a brake deceleration signal when it detects that the position of the brake operating member triggers the position switch.
Here, if the position switch is not triggered by the position of the brake operating member, the brake pressure detecting switch 100 does not output a brake pressure signal; similarly, the deceleration detection switch 110 does not output a brake deceleration signal.
In an alternative embodiment of the present application, the brake failure detection module 12 is specifically configured to determine whether a target corresponding relationship is satisfied between the brake pressure signal and the brake deceleration signal when the position of the brake operating member triggers the position switch, and if not, determine that a brake system has a fault, and generate a brake system fault signal.
Specifically, when the position switch is activated at the position of the brake operating member, the brake pressure detection switch 100 and the deceleration detection switch 110 each output a signal detected by them. The brake failure detection module 12 determines that the brake system has a failure by determining whether the brake pressure signal output by the brake pressure detection module 10 and the brake deceleration signal output by the deceleration detection module 11 satisfy the target correspondence relationship in table 2 when the position switch is triggered by the position of the brake operating member, and determining that the two signals do not satisfy the target correspondence relationship in table 2.
In the embodiment of the present application, the situation that the braking pressure detection module 10 and the braking deceleration detection module 11 are both switch modules is suitable for a scenario that does not require to perform a particularly high-precision detection on the braking system, such a processing manner is simpler than a manner that two detection modules are used to perform a real-time detection and transmit two signals to the braking failure detection module 12 in real time, and then the braking failure detection module 12 determines whether the braking system has a fault, and is suitable for a scenario that does not require to obtain and determine in real time whether the braking pressure signal and the braking deceleration signal satisfy a corresponding relationship, thereby determining whether the braking system has a fault.
It should be noted that the brake pressure detection module 10 and the deceleration detection module 11 output corresponding signals after certain trigger conditions are met, or the forms of detecting and generating corresponding signals in real time may be combined arbitrarily. That is, when the brake pressure detection module 10 detects and generates a brake pressure signal in real time, the deceleration detection module 11 may output the brake deceleration signal after a certain trigger condition is met, or when the brake pressure detection module 10 outputs the brake pressure signal after a certain trigger condition is met, the deceleration detection module 11 may detect and generate the brake deceleration signal in real time.
According to the technical scheme of the embodiment of the application, a brake pressure detection module 10 is utilized to generate a brake pressure signal when a position switch is triggered at the position of a brake control component; with the deceleration detection module 11, a brake deceleration signal is generated when the position switch is activated by the position of the brake operating member. When the position switch is triggered by judging the position of the brake control component, whether the two signals meet the target corresponding relation or not can be judged, and the brake system can be determined to have a fault under the condition that the two signals do not meet the target corresponding relation. The user can determine that the brake system of the vehicle breaks down in time through the brake system fault signal when the brake system breaks down or in the early stage of breaking down, so that the passive safety of the vehicle is improved, the risk of out-of-control brake of the vehicle is reduced, and the property loss of the user is reduced.
Fig. 5 is a schematic structural composition diagram three of a brake system fault detection system provided in the embodiment of the present application. In an alternative embodiment of the present application, as shown in fig. 5, the brake system fault detection system further includes:
and the alarm module 23 is configured to output prompt information based on the brake system fault signal, where the prompt information is used to prompt the brake system fault.
Here, the brake failure detection module 12 is implemented by the alarm module 23 to prompt the user that the brake system is faulty after determining that the brake system of the vehicle is faulty based on the brake pressure signal and the brake deceleration signal and generating a brake system fault signal. The prompt for the brake system fault can be realized in various ways, for example, by arranging a buzzer on the vehicle and sending a prompt message to a user through the buzzer; prompting the fault of a vehicle braking system by displaying prompting information on an instrument panel disc of the vehicle; the vehicle and the electronic equipment can be wirelessly connected, and prompt information is sent to the user through the electronic equipment.
Fig. 6 is a schematic structural diagram of a brake system fault detection system according to an embodiment of the present application, where in fig. 6, the brake system is a linked brake system, a front brake pump 2201 only brakes front wheels of a vehicle, and a rear brake pump 2202 can simultaneously brake the front wheels and the rear wheels of the vehicle, and at this time, a brake pressure detection module may be added to each of the front and rear brake systems, and a deceleration detection module is combined to achieve the purpose of detecting a brake system fault and alarming. As shown in fig. 6, the brake pressure detection module and the deceleration detection module are both in the form of switch modules. The front brake pressure detection switch 1001, the rear brake pressure detection switch 1002 and the deceleration detection switch 110 input respective generated signals into the brake failure detection module 12, and the brake failure detection module 12 compares or matches the respective signals by calculation, thereby determining whether a failure exists in the brake system of the vehicle, and when it is determined that a failure exists in the brake system of the vehicle, outputs an alarm signal and prompts a user through the alarm module 23.
Fig. 7 is a schematic diagram of a brake system failure detection system according to an embodiment of the present invention, and in fig. 7, the brake handle 71 is substantially a hand brake, which can be seen as a hand brake on a front handlebar of a motorcycle, and a vehicle such as a motorcycle including the front handlebar brake hand brake can be braked by the hand brake at the front handlebar or by the brake pedal 20 during operation. In fig. 7, the modules in the interlocking brake system are mainly switch modules, but it should be understood that these modules may be sensors. When the brake failure detection module 12 determines that the brake system has a fault, a brake system fault signal is generated, and an alarm message is sent out through the alarm module 23 to prompt a user.
According to the technical scheme, the brake pressure signal and the brake deceleration signal can be utilized, whether the brake system of the vehicle has a fault or not is determined based on comparison and matching between the two signals, so that a user can determine that the brake system of the vehicle has the fault in the early stage of the fault or the fault of the brake system, the fault is determined by the fault signal of the brake system in time, the passive safety of the vehicle is improved, the risk of out-of-control brake of the vehicle is reduced, and the property loss of the user is reduced.
Fig. 8 is a schematic flow chart of a brake system fault detection method provided by an embodiment of the present application, where the method is applied to a vehicle, and as shown in fig. 8, the method includes the following steps:
step 801: pressure of the brake system is detected, and a brake pressure signal is generated based on the detected pressure of the brake system.
In the embodiment of the application, the pressure of the brake system is detected through the brake pressure detection module.
Step 802: a braking deceleration of the vehicle is detected and a braking deceleration signal is generated based on the braking deceleration.
In the embodiment of the application, the detection of the braking deceleration is realized by the deceleration detection module.
Step 803: determining whether a brake system of a vehicle has a fault based on the brake pressure signal and the brake deceleration signal; generating a brake system fault signal upon determining that a fault exists in the brake system.
In the embodiment of the application, the brake failure detection module is used for determining whether a brake system of the vehicle has a fault or not based on the brake pressure signal and the brake deceleration signal; and generating a brake system fault signal if it is determined that the brake system has a fault.
In an optional embodiment of the present application, the determining whether a brake system of a vehicle has a fault based on the brake pressure signal and the brake deceleration signal, and generating a brake system fault signal in the case where it is determined that the brake system has a fault, includes:
determining whether the brake pressure signal and the brake deceleration signal meet a target corresponding relation, if not, determining that a brake system has a fault, and generating a brake system fault signal; wherein the target correspondence is a correspondence between the brake pressure signal and the brake deceleration signal when there is no fault in the brake system.
In an optional embodiment of the present application, the method further comprises:
determining a target correspondence relationship based on a traveling speed of the vehicle and/or a road surface condition on which the vehicle travels, before determining whether the target correspondence relationship is satisfied between the brake pressure signal and the brake deceleration signal;
and if the running speeds are different and/or the road surface conditions are different, the target corresponding relations are different.
In an optional embodiment of the present application, the detecting the pressure of the brake system and generating the brake pressure signal based on the detected pressure of the brake system includes:
generating a brake pressure signal when a pressure of the brake system reaches a pressure threshold;
the detecting a braking deceleration of the vehicle and generating a braking deceleration signal based on the braking deceleration includes:
a brake deceleration signal is generated when the brake deceleration reaches a deceleration threshold.
In an optional embodiment of the present application, the determining whether a brake system of a vehicle has a fault based on the brake pressure signal and the brake deceleration signal includes:
determining whether the brake pressure signal and the brake deceleration signal occur simultaneously; and if the two events do not occur simultaneously, determining that the brake system has a fault.
In an optional embodiment of the present application, the method further comprises:
the deceleration threshold is determined based on a running speed of the vehicle and/or a road surface condition on which the vehicle runs.
In an alternative embodiment of the present application, the vehicle has a brake operating member and a position switch;
the detecting pressure of the brake system and generating a brake pressure signal based on the detected pressure of the brake system includes:
generating a brake pressure signal when the position of the brake operating member triggers the position switch;
the detecting a braking deceleration of the vehicle and generating a braking deceleration signal based on the braking deceleration includes:
a brake deceleration signal is generated when the position of the brake actuating member triggers the position switch.
In an optional embodiment of the present application, the determining whether a brake system of a vehicle has a fault based on the brake pressure signal and the brake deceleration signal, and generating a brake system fault signal in the case where it is determined that the brake system has a fault, includes:
and determining whether the brake pressure signal and the brake deceleration signal meet a target corresponding relation when the position of the brake operating part triggers the position switch, if not, determining that the brake system has a fault, and generating a brake system fault signal.
In an alternative embodiment of the present application, the braking system includes: the brake system comprises a brake pump and a brake pipeline connected with the brake pump; the detecting pressure of the brake system and generating a brake pressure signal based on the detected pressure of the brake system includes:
the method includes detecting a pressure of the brake pump or a pressure of the brake pipe, and generating a brake pressure signal based on the detected pressure of the brake pump or the brake pipe.
In an alternative embodiment of the present application, the braking system includes: n brake lines; n is an integer greater than or equal to 1;
the detecting pressure of the brake system and generating a brake pressure signal based on the detected pressure of the brake system includes:
respectively detecting the pressure of the N brake pipelines, and generating N brake pressure signals based on the detected pressure of the N brake pipelines;
the determining whether a brake system of a vehicle has a fault based on the brake pressure signal and the brake deceleration signal, and generating a brake system fault signal in the event that the brake system has a fault is determined, includes:
determining whether the brake deceleration signal and any one of the N brake pressure signals meet a target corresponding relationship, if the brake deceleration signal and any one of the N brake pressure signals do not meet the target corresponding relationship, judging whether a brake system has a fault, and generating a brake system fault signal; wherein the target correspondence is a correspondence between the brake pressure signal and the brake deceleration signal when there is no fault in the brake system.
In an optional embodiment of the present application, the method further comprises:
and outputting prompt information based on the brake system fault signal, wherein the prompt information is used for prompting the brake system fault.
Those skilled in the art will appreciate that the implementation of the steps in the brake system fault detection method illustrated in fig. 8 may be understood with reference to the foregoing description of the brake system fault detection system.
The embodiment of the application also provides a vehicle, and the vehicle comprises the brake system fault detection system in the embodiment.
The embodiment of the present application further provides a computer-readable storage medium, on which a computer program is stored, and the computer program, when executed by a processor, implements the brake system fault detection method described in the above embodiment.
The technical solutions described in the embodiments of the present application can be arbitrarily combined without conflict.
In the several embodiments provided in the present application, it should be understood that the disclosed method and intelligent device may be implemented in other ways. The above-described device embodiments are merely illustrative, for example, the division of the unit is only a logical functional division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or units may be electrical, mechanical or other forms.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed on a plurality of network units; some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, all functional units in the embodiments of the present application may be integrated into one second processing unit, or each unit may be separately regarded as one unit, or two or more units may be integrated into one unit; the integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application.
Claims (24)
1. A brake system fault detection system for application to a vehicle, the brake system fault detection system comprising:
the brake pressure detection module is used for detecting the pressure of the brake system and generating a brake pressure signal based on the detected pressure of the brake system;
the deceleration detection module is used for detecting the braking deceleration of the vehicle and generating a braking deceleration signal based on the braking deceleration;
a brake failure detection module for determining whether a brake system of a vehicle has a fault based on the brake pressure signal and the brake deceleration signal; generating a brake system fault signal upon determining that a fault exists in the brake system.
2. The brake system fault detection system of claim 1,
the brake failure detection module is specifically configured to determine whether a target correspondence relationship is satisfied between the brake pressure signal and the brake deceleration signal, and if not, determine that a brake system has a fault and generate a brake system fault signal; wherein the target correspondence is a correspondence between the brake pressure signal and the brake deceleration signal when there is no fault in the brake system.
3. The brake system fault detection system of claim 2,
the brake failure detection module is further used for determining a target corresponding relation based on the running speed of the vehicle and/or the road condition of the running vehicle before determining whether the target corresponding relation is met between the brake pressure signal and the brake deceleration signal;
and if the running speeds are different and/or the road surface conditions are different, the target corresponding relations are different.
4. The brake system failure detection system according to any one of claims 1 to 3,
the brake pressure detection module is specifically used for generating a brake pressure signal when the pressure of the brake system reaches a pressure threshold value;
the deceleration detection module is specifically configured to generate a brake deceleration signal when the brake deceleration reaches a deceleration threshold.
5. The brake system fault detection system of claim 4,
the brake failure detection module is specifically configured to determine whether the brake pressure signal and the brake deceleration signal occur simultaneously; and if the two events do not occur simultaneously, determining that the brake system has a fault.
6. The brake system fault detection system of claim 4,
the deceleration detection module is further used for determining the deceleration threshold value based on the running speed of the vehicle and/or the road surface condition of the vehicle.
7. The brake system failure detection system according to any one of claims 1 to 3,
the vehicle has a brake operating member and a position switch;
the brake pressure detection module is specifically used for generating a brake pressure signal when the position switch is triggered by the position of the brake control component;
the deceleration detection module is specifically used for generating a braking deceleration signal when the position of the braking operation component triggers the position switch.
8. The brake system fault detection system of claim 7,
the brake failure detection module is specifically configured to determine whether a target corresponding relationship is satisfied between the brake pressure signal and the brake deceleration signal when the position switch is triggered by the position of the brake operating member, and if not, determine that a brake system has a fault and generate a brake system fault signal.
9. A brake system fault detection system according to any one of claims 1 to 3, wherein the brake system comprises: the brake system comprises a brake pump and a brake pipeline connected with the brake pump;
the brake pressure detection module is specifically configured to detect a pressure of the brake pump or a pressure of the brake pipe, and generate a brake pressure signal based on the detected pressure of the brake pump or the brake pipe.
10. The brake system fault detection system of claim 9, wherein the brake system comprises: n brake lines; n is an integer greater than or equal to 1;
the brake pressure detection module is specifically configured to detect pressures of the N brake pipes, respectively, and generate N brake pressure signals based on the detected pressures of the N brake pipes;
the brake failure detection module is specifically configured to determine whether the brake deceleration signal and any one of the N brake pressure signals all satisfy a target correspondence relationship, and if the brake deceleration signal and any one of the N brake pressure signals do not satisfy the target correspondence relationship, determine whether a brake system has a fault, and generate a brake system fault signal; wherein the target correspondence is a correspondence between the brake pressure signal and the brake deceleration signal when there is no fault in the brake system.
11. The brake system fault detection system according to any one of claims 1 to 3, characterized in that the brake system fault detection system further includes:
and the alarm module is used for outputting prompt information based on the brake system fault signal, and the prompt information is used for prompting the brake system fault.
12. A brake system fault detection method, applied to a vehicle, the method comprising:
detecting a pressure of the brake system and generating a brake pressure signal based on the detected pressure of the brake system;
detecting a braking deceleration of the vehicle and generating a braking deceleration signal based on the braking deceleration;
determining whether a brake system of a vehicle has a fault based on the brake pressure signal and the brake deceleration signal; generating a brake system fault signal upon determining that a fault exists in the brake system.
13. The method of claim 12, wherein the determining whether a brake system of a vehicle is malfunctioning based on the brake pressure signal and the brake deceleration signal, and in the event that a failure of the brake system is determined, generating a brake system failure signal, comprises:
determining whether the brake pressure signal and the brake deceleration signal meet a target corresponding relation, if not, determining that a brake system has a fault, and generating a brake system fault signal; wherein the target correspondence is a correspondence between the brake pressure signal and the brake deceleration signal when there is no fault in the brake system.
14. The method of claim 13, further comprising:
determining a target correspondence relationship based on a traveling speed of the vehicle and/or a road surface condition on which the vehicle travels, before determining whether the target correspondence relationship is satisfied between the brake pressure signal and the brake deceleration signal;
and if the running speeds are different and/or the road surface conditions are different, the target corresponding relations are different.
15. The method according to any one of claims 12 to 14,
the detecting pressure of the brake system and generating a brake pressure signal based on the detected pressure of the brake system includes:
generating a brake pressure signal when a pressure of the brake system reaches a pressure threshold;
the detecting a braking deceleration of the vehicle and generating a braking deceleration signal based on the braking deceleration includes:
a brake deceleration signal is generated when the brake deceleration reaches a deceleration threshold.
16. The method of claim 15, wherein the determining whether a brake system of a vehicle is malfunctioning based on the brake pressure signal and the brake deceleration signal comprises:
determining whether the brake pressure signal and the brake deceleration signal occur simultaneously; and if the two events do not occur simultaneously, determining that the brake system has a fault.
17. The method of claim 15, further comprising:
the deceleration threshold is determined based on a running speed of the vehicle and/or a road surface condition on which the vehicle runs.
18. The method of claim 15,
the vehicle has a brake operating member and a position switch;
the detecting pressure of the brake system and generating a brake pressure signal based on the detected pressure of the brake system includes:
generating a brake pressure signal when the position of the brake operating member triggers the position switch;
the detecting a braking deceleration of the vehicle and generating a braking deceleration signal based on the braking deceleration includes:
a brake deceleration signal is generated when the position of the brake actuating member triggers the position switch.
19. The method of claim 18, wherein the determining whether a brake system of a vehicle is malfunctioning based on the brake pressure signal and the brake deceleration signal, and in the event that a malfunction of the brake system is determined, generating a brake system malfunction signal comprises:
and determining whether the brake pressure signal and the brake deceleration signal meet a target corresponding relation when the position of the brake operating part triggers the position switch, if not, determining that the brake system has a fault, and generating a brake system fault signal.
20. The method of any of claims 12 to 14, wherein the braking system comprises: the brake system comprises a brake pump and a brake pipeline connected with the brake pump; the detecting pressure of the brake system and generating a brake pressure signal based on the detected pressure of the brake system includes:
the method includes detecting a pressure of the brake pump or a pressure of the brake pipe, and generating a brake pressure signal based on the detected pressure of the brake pump or the brake pipe.
21. The method of claim 20, wherein the braking system comprises: n brake lines; n is an integer greater than or equal to 1;
the detecting pressure of the brake system and generating a brake pressure signal based on the detected pressure of the brake system includes:
respectively detecting the pressure of the N brake pipelines, and generating N brake pressure signals based on the detected pressure of the N brake pipelines;
the determining whether a brake system of a vehicle has a fault based on the brake pressure signal and the brake deceleration signal, and generating a brake system fault signal in the event that the brake system has a fault is determined, includes:
determining whether the brake deceleration signal and any one of the N brake pressure signals meet a target corresponding relationship, if the brake deceleration signal and any one of the N brake pressure signals do not meet the target corresponding relationship, judging whether a brake system has a fault, and generating a brake system fault signal; wherein the target correspondence is a correspondence between the brake pressure signal and the brake deceleration signal when there is no fault in the brake system.
22. The method according to any one of claims 12 to 14, further comprising:
and outputting prompt information based on the brake system fault signal, wherein the prompt information is used for prompting the brake system fault.
23. A vehicle characterized in that it comprises a brake system fault detection system according to any one of claims 1 to 11.
24. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the method of any one of claims 12 to 22.
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| CN202010658209.2A CN111923893A (en) | 2020-07-09 | 2020-07-09 | Brake system fault detection system and method, vehicle and storage medium |
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| CN115009252A (en) * | 2022-07-20 | 2022-09-06 | 阿维塔科技(重庆)有限公司 | Braking method and device |
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