Air detection method and device for brake pipe in vehicle, storage medium and vehicle

Abstract

The application discloses a kind of air detection method, device, storage medium and vehicle in brake pipeline in vehicle.The method comprises: obtaining the pressure liquid storage amount curve of brake pipeline in vehicle, wherein, pressure liquid storage amount curve is used to show the relationship between the pressure of brake pipeline in vehicle and the liquid storage amount of brake pipeline in vehicle;In pressure liquid storage amount curve, target liquid storage amount corresponding to the liquid storage amount of brake pipeline in vehicle is determined;Comparison is carried out to liquid storage amount and target liquid storage amount, and comparison result is obtained, wherein, comparison result is used to characterize the relationship between liquid storage amount and target liquid storage amount;Based on comparison result, the air content in brake pipeline is determined;In response to air content exceeding air content threshold, air in brake pipeline is discharged.The application solves the technical problem that brake force is insufficient due to air content in brake pipeline exceeding standard in vehicle.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of vehicles, in particular to a method and device for detecting air in a brake pipe of a vehicle, a storage medium and a vehicle. BACKGROUND

[0002] At present, in the integrated brake control assembly of a vehicle, the brake circuit of a mass-produced vehicle is directly put into production after being vacuumed and filled, and the air content in the brake circuit is not detected at the time of being put into production, thereby causing the technical problem of insufficient braking force of the vehicle due to excessive air content in the brake pipe.

[0003] At present, there is no effective solution to the technical problem of insufficient braking force of the vehicle due to excessive air content in the brake pipe. SUMMARY

[0004] The embodiments of the present application provide a method and device for detecting air in a brake pipe of a vehicle, a storage medium and a vehicle to at least solve the technical problem of insufficient braking force of the vehicle due to excessive air content in the brake pipe.

[0005] According to an aspect of the embodiments of the present application, a method for detecting air in a brake pipe of a vehicle is provided. The method can include: obtaining a pressure-accumulation curve of the brake pipe of the vehicle, wherein the pressure-accumulation curve is used to represent the relationship between the pressure of the brake pipe of the vehicle and the accumulation of the brake pipe of the vehicle; determining a target accumulation corresponding to the accumulation of the brake pipe of the vehicle in the pressure-accumulation curve; comparing the accumulation with the target accumulation to obtain a comparison result, wherein the comparison result is used to represent the relationship between the accumulation and the target accumulation; determining the air content in the brake pipe based on the comparison result; and discharging the air in the brake pipe in response to the air content exceeding an air content threshold.

[0006] Optionally, determining the air content in the brake pipe based on the comparison result includes: in response to the comparison result being that the accumulation is greater than the target accumulation, determining that the air state in the brake pipe is that the brake pipe contains air and determining the air content; and in response to the comparison result being that the accumulation is not greater than the target accumulation, determining that the air state in the brake pipe is that the brake pipe does not contain air and determining the air content.

[0007] Optionally, in response to the comparison result being that the accumulation is greater than the target accumulation, determining that the air state in the brake pipe is that the brake pipe contains air and determining the air content includes: detecting the air in the brake pipe to obtain the air content.

[0008] Optionally, in response to the comparison result being that the liquid storage amount is not greater than the target liquid storage amount, determining that the air state in the brake pipe is that the brake pipe does not contain air, and determining the air content includes: performing zeroization processing on the air in the brake pipe to obtain the air content.

[0009] Optionally, after discharging the air in the brake pipe in response to the air content exceeding the air content threshold, the detection method further includes: detecting the remaining air in the discharged brake pipe to obtain a remaining air content; and in response to the remaining air content not exceeding the air content threshold, ending the discharging of the air in the brake pipe.

[0010] Optionally, in addition to discharging the air in the brake pipe in response to the air content exceeding the air content threshold, the detection method further includes: in response to the air content not exceeding the air content threshold, braking the vehicle using the brake pipe.

[0011] According to an aspect of an embodiment of the present application, a device for detecting air in a brake pipe of a vehicle is provided. The device can include: an obtaining unit configured to obtain a pressure liquid storage amount curve of the brake pipe of the vehicle, wherein the pressure liquid storage amount curve is configured to represent a relationship between pressure of the brake pipe of the vehicle and liquid storage amount of the brake pipe of the vehicle; a first determining unit configured to determine, in the pressure liquid storage amount curve, a target liquid storage amount corresponding to the liquid storage amount of the brake pipe of the vehicle; a comparison unit configured to compare the liquid storage amount with the target liquid storage amount to obtain a comparison result, wherein the comparison result is configured to represent a relationship between the liquid storage amount and the target liquid storage amount; a second determining unit configured to determine, based on the comparison result, an air content in the brake pipe; and a discharging unit configured to discharge the air in the brake pipe in response to the air content exceeding an air content threshold.

[0012] According to another aspect of an embodiment of the present application, a computer readable storage medium is also provided. The computer readable storage medium includes a stored program, wherein the program, when executed, controls a device in which the computer readable storage medium is located to perform the method for detecting air in a brake pipe of a vehicle according to an embodiment of the present application.

[0013] According to another aspect of an embodiment of the present application, a processor is also provided. The processor is configured to execute a program, wherein the program, when executed by the processor, performs the method for detecting air in a brake pipe of a vehicle according to an embodiment of the present application.

[0014] According to another aspect of an embodiment of the present application, a vehicle is also provided. The vehicle is configured to perform the method for detecting air in a brake pipe of a vehicle according to an embodiment of the present application.

[0015] In the embodiment of the present application, the pressure and liquid storage amount curve of the brake pipe in the vehicle is acquired, the target liquid storage amount corresponding to the liquid storage amount of the brake pipe in the vehicle is determined in the pressure and liquid storage amount curve, the liquid storage amount and the target liquid storage amount are compared to obtain a comparison result, if the comparison result is that the liquid storage amount is greater than the target liquid storage amount, it is determined that the air state in the brake pipe is that the brake pipe contains air, and the air content is determined, if the comparison result is that the liquid storage amount is not greater than the target liquid storage amount, it is determined that the air state in the brake pipe is that the brake pipe does not contain air, and the air content is determined, the relationship between the determined air content and the air content threshold is compared, if the air content exceeds the air content threshold, the air in the brake pipe is discharged, and if the air content does not exceed the air content threshold, the vehicle is braked by using the brake pipe, so that the purpose of avoiding unqualified air content is achieved, and the technical problem of insufficient braking force caused by excessive air content in the brake pipe of the vehicle is solved, and the technical effect of ensuring that the air content in the brake pipe does not exceed the standard and the braking force is sufficient is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0016] The drawings described herein are used to provide further understanding of the present application, and form a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application, and do not constitute improper limitations on the present application. In the drawings:

[0017] Figure 1 FIG. 1 is a flowchart of a method for detecting air in a brake pipe in a vehicle according to an embodiment of the present application;

[0018] FIG. 2(a) is a flowchart of a method for actively detecting air content according to an integrated brake control assembly according to an embodiment of the present application;

[0019] FIG. 2(b) is a schematic diagram of a pressure and liquid storage amount curve according to an embodiment of the present application;

[0020] Figure 3 FIG. 3 is a schematic diagram of an air detection device for a brake pipe in a vehicle according to an embodiment of the present application. DETAILED DESCRIPTION

[0021] In order for those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should be within the scope of protection of the present application.

[0022] It is to be understood that the terms "first", "second", and the like, used in the description and the claims of the application, as well as the above-described drawings, are used to distinguish between similar objects and are not necessarily used to describe a particular sequential or chronological order. It is to be understood that the use of the terms so-termed, where appropriate, can be interchanged with each other, so that the embodiments of the application described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product or apparatus that includes a list of steps or units is not necessarily limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to such a process, method, product or apparatus.

[0023] Embodiment 1

[0024] According to an embodiment of the present application, a method for detecting air in a brake pipe of a vehicle is provided. It is to be understood that the steps shown in the flowchart of the drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described herein can be executed in an order different from that shown herein.

[0025] Figure 1 is a flowchart of a method for detecting air in a brake pipe of a vehicle according to an embodiment of the present application, which can include the following steps:

[0026] Step S101, obtaining a pressure and volume curve of a brake pipe in a vehicle.

[0027] In the technical solution provided by step S101 of the present application, the pressure and volume curve of the brake pipe in the vehicle can be obtained by bench or real vehicle measurement, then the obtained pressure and volume curve is written into the program of the integrated brake control assembly, and the air content threshold is taken as a reference standard for air content detection of the brake pipe in the vehicle, wherein the pressure and volume curve can be used to represent the relationship between the pressure of the brake pipe in the vehicle and the volume of the brake pipe in the vehicle, the pressure of the brake pipe in the vehicle can be taken from 10 bar to 30 bar, for example, the pressure of the brake pipe in the vehicle can be 11 bar, 12 bar, 13 bar, 14 bar, 15 bar, etc. Herein, only for example, not for specific limitation.

[0028] Step S102, determining a target volume corresponding to the volume of the brake pipe in the vehicle in the pressure and volume curve.

[0029] In the technical solution provided in the step S102 of the present application, after the pressure-accumulation amount curve of the brake pipe in the vehicle is obtained, in the pressure-accumulation amount curve, when the pressure of the brake pipe in the vehicle is determined, the target accumulation amount corresponding to the accumulation amount of the brake pipe in the vehicle is determined, that is, in the same pressure building condition, the actual accumulation amount of the brake pipe in the vehicle and the theoretical accumulation amount corresponding to the actual accumulation amount are determined.

[0030] Optionally, when the pressure of the brake pipe in the vehicle is 10 bar, the actual accumulation amount of the brake pipe in the vehicle and the theoretical accumulation amount corresponding to the actual accumulation amount in the pressure condition are determined, when the pressure of the brake pipe in the vehicle is 16 bar, the actual accumulation amount of the brake pipe in the vehicle and the theoretical accumulation amount corresponding to the actual accumulation amount in the pressure condition are determined, when the pressure of the brake pipe in the vehicle is 21.5 bar, the actual accumulation amount of the brake pipe in the vehicle and the theoretical accumulation amount corresponding to the actual accumulation amount in the pressure condition are determined, and when the pressure of the brake pipe in the vehicle is 28.8 bar, the actual accumulation amount of the brake pipe in the vehicle and the theoretical accumulation amount corresponding to the actual accumulation amount in the pressure condition are determined. Here, only examples are given, and are not limited.

[0031] In step S103, the accumulation amount is compared with the target accumulation amount to obtain a comparison result.

[0032] In the technical solution provided in the step S103 of the present application, after the target accumulation amount corresponding to the accumulation amount of the brake pipe in the vehicle is determined, the comparison result can be obtained by comparing the accumulation amount with the target accumulation amount, that is, by comparing the actual accumulation amount of the brake pipe in the vehicle in a certain pressure condition and the theoretical accumulation amount corresponding to the actual accumulation amount, the comparison result can be obtained, wherein the comparison result can be used to represent the relationship between the accumulation amount and the target accumulation amount.

[0033] Optionally, in the case that the pressure of the vehicle brake pipe is 12 bar, the comparison between the actual volume of the vehicle brake pipe under the pressure and the volume theoretical value corresponding to the actual volume can obtain a comparison result, in the case that the pressure of the vehicle brake pipe is 13.5 bar, the comparison between the actual volume of the vehicle brake pipe under the pressure and the volume theoretical value corresponding to the actual volume can obtain a comparison result, in the case that the pressure of the vehicle brake pipe is 20.1 bar, the comparison between the actual volume of the vehicle brake pipe under the pressure and the volume theoretical value corresponding to the actual volume can obtain a comparison result, in the case that the pressure of the vehicle brake pipe is 29.5 bar, the comparison between the actual volume of the vehicle brake pipe under the pressure and the volume theoretical value corresponding to the actual volume can obtain a comparison result, which is only illustrative and not limited.

[0034] In step S104, the air content in the brake pipe is determined based on the comparison result.

[0035] In the technical solution provided by step S104 of the present application, after the comparison result is obtained, the relationship between the volume and the target volume can be used to determine the air state in the brake pipe and the air content in the brake pipe, that is, the relationship between the actual volume of the vehicle brake pipe under a certain pressure and the volume theoretical value corresponding to the actual volume can be used to determine the air state in the brake pipe and the air content in the brake pipe, wherein the air state in the brake pipe can include that the brake pipe contains air and the brake pipe does not contain air, and the air content in the brake pipe can include that the air content is 0 and the air content is not 0, which is only illustrative and not limited.

[0036] Optionally, in the case that the pressure of the brake pipe in the vehicle is 13 bar, the air state in the brake pipe and the air content in the brake pipe can be determined according to the relationship between the actual liquid storage amount of the brake pipe in the vehicle under the pressure condition and the liquid storage amount theoretical value corresponding to the actual liquid storage amount; in the case that the pressure of the brake pipe in the vehicle is 14.5 bar, the air state in the brake pipe and the air content in the brake pipe can be determined according to the relationship between the actual liquid storage amount of the brake pipe in the vehicle under the pressure condition and the liquid storage amount theoretical value corresponding to the actual liquid storage amount; in the case that the pressure of the brake pipe in the vehicle is 16.9 bar, the air state in the brake pipe and the air content in the brake pipe can be determined according to the relationship between the actual liquid storage amount of the brake pipe in the vehicle under the pressure condition and the liquid storage amount theoretical value corresponding to the actual liquid storage amount; in the case that the pressure of the brake pipe in the vehicle is 17.8 bar, the air state in the brake pipe and the air content in the brake pipe can be determined according to the relationship between the actual liquid storage amount of the brake pipe in the vehicle under the pressure condition and the liquid storage amount theoretical value corresponding to the actual liquid storage amount. Here, only examples are given, and no specific limitation is made.

[0037] Step S105: in response to the air content exceeding the air content threshold value, discharging the air in the brake pipe.

[0038] In the technical solution provided by the above step S105 of the present application, after determining the air content in the brake pipe under a certain pressure condition, it is determined whether the air content exceeds the air content threshold value, and if the air content exceeds the air content threshold value, a corresponding alarm reminding strategy is executed, and the air in the brake pipe is discharged, and after the air in the brake pipe is discharged, the brake pipe is used to brake the vehicle, so that the air content in the brake pipe is ensured not to exceed the standard and the braking force is sufficient. The alarm reminding strategy can be used to report the feedback information about the air content exceeding the standard, so as to remind the integrated brake control assembly to discharge the air in the brake pipe.

[0039] Optionally, in the case that the pressure of the brake pipe in the vehicle is 15 bar, it is determined whether the air content in the brake pipe under this pressure condition exceeds the air content threshold value, if the air content exceeds the air content threshold value, the corresponding alarm reminding strategy is executed, and the air in the brake pipe is discharged, in the case that the pressure of the brake pipe in the vehicle is 16.5 bar, it is determined whether the air content in the brake pipe under this pressure condition exceeds the air content threshold value, if the air content exceeds the air content threshold value, the corresponding alarm reminding strategy is executed, and the air in the brake pipe is discharged, in the case that the pressure of the brake pipe in the vehicle is 22.6 bar, it is determined whether the air content in the brake pipe under this pressure condition exceeds the air content threshold value, if the air content exceeds the air content threshold value, the corresponding alarm reminding strategy is executed, and the air in the brake pipe is discharged, in the case that the pressure of the brake pipe in the vehicle is 25.5 bar, it is determined whether the air content in the brake pipe under this pressure condition exceeds the air content threshold value, if the air content exceeds the air content threshold value, the corresponding alarm reminding strategy is executed, and the air in the brake pipe is discharged, which is only illustrative and not limited.

[0040] The above steps S101 to S105 of the present application, the pressure and liquid volume curve of the brake pipe in the vehicle is obtained, in the pressure and liquid volume curve, the target liquid volume corresponding to the liquid volume of the brake pipe in the vehicle is determined, the liquid volume and the target liquid volume are compared to obtain a comparison result, if the comparison result is that the liquid volume is greater than the target liquid volume, it is determined that the air state in the brake pipe contains air, and the air content is determined, if the comparison result is that the liquid volume is not greater than the target liquid volume, it is determined that the air state in the brake pipe does not contain air, and the air content is determined, the relationship between the determined air content and the air content threshold value is compared, if the air content exceeds the air content threshold value, the air in the brake pipe is discharged, if the air content does not exceed the air content threshold value, the vehicle is braked by the brake pipe, thereby achieving the purpose of avoiding unqualified air content, and further solving the technical problem of insufficient braking force caused by excessive air content in the brake pipe of the vehicle, and realizing the technical effect of ensuring that the air content in the brake pipe does not exceed the standard and the braking force is sufficient.

[0041] The above method of the embodiment is further introduced as follows.

[0042] As an optional embodiment, the step S104 of determining the air content in the brake pipe based on the comparison result comprises: in response to the comparison result being that the brake pipe liquid volume is greater than the target brake pipe liquid volume, determining that the air state in the brake pipe is that the brake pipe contains air and determining the air content; and in response to the comparison result being that the brake pipe liquid volume is not greater than the target brake pipe liquid volume, determining that the air state in the brake pipe is that the brake pipe does not contain air and determining the air content.

[0043] In this embodiment, after obtaining the comparison result, the air state in the brake pipe and the air content in the brake pipe can be determined according to the relationship between the brake pipe liquid volume and the target brake pipe liquid volume. If the comparison result is that the brake pipe liquid volume is greater than the target brake pipe liquid volume, it is determined that the air state in the brake pipe is that the brake pipe contains air and the air content is determined. That is, if the actual brake pipe liquid volume of the vehicle under a certain pressure condition is greater than the brake pipe liquid volume theoretical value corresponding to the actual brake pipe liquid volume, it is determined that the air state in the brake pipe under the pressure condition is that the brake pipe contains air and the air content is determined. If the comparison result is that the brake pipe liquid volume is not greater than the target brake pipe liquid volume, it is determined that the air state in the brake pipe is that the brake pipe does not contain air and the air content is determined. That is, if the actual brake pipe liquid volume of the vehicle under a certain pressure condition is not greater than the brake pipe liquid volume theoretical value corresponding to the actual brake pipe liquid volume, it is determined that the air state in the brake pipe under the pressure condition is that the brake pipe does not contain air and the air content in the brake pipe is determined.

[0044] Optionally, in the case that the pressure of the brake pipe in the vehicle is 13.1 bar, if the actual brake pipe liquid volume of the vehicle under the pressure condition is greater than the brake pipe liquid volume theoretical value corresponding to the actual brake pipe liquid volume, it is determined that the air state in the brake pipe under the pressure condition is that the brake pipe contains air and the air content is determined. If the actual brake pipe liquid volume of the vehicle under the pressure condition is not greater than the brake pipe liquid volume theoretical value corresponding to the actual brake pipe liquid volume, it is determined that the air state in the brake pipe under the pressure condition is that the brake pipe does not contain air and the air content in the brake pipe is determined.

[0045] Optionally, in the case that the pressure of the brake pipe in the vehicle is 26.8 bar, if the actual brake pipe liquid volume of the vehicle under the pressure condition is greater than the brake pipe liquid volume theoretical value corresponding to the actual brake pipe liquid volume, it is determined that the air state in the brake pipe under the pressure condition is that the brake pipe contains air and the air content is determined. If the actual brake pipe liquid volume of the vehicle under the pressure condition is not greater than the brake pipe liquid volume theoretical value corresponding to the actual brake pipe liquid volume, it is determined that the air state in the brake pipe under the pressure condition is that the brake pipe does not contain air and the air content in the brake pipe is determined.

[0046] Optionally, if the actual reservoir volume of the vehicle brake pipe under the pressure condition is greater than the reservoir volume theoretical value corresponding to the actual reservoir volume, it is determined that the air state in the brake pipe under the pressure condition is that the brake pipe contains air, and the air content is determined, and if the actual reservoir volume of the vehicle brake pipe under the pressure condition is not greater than the reservoir volume theoretical value corresponding to the actual reservoir volume, it is determined that the air state in the brake pipe under the pressure condition is that the brake pipe does not contain air, and the air content in the brake pipe is determined.

[0047] As an optional embodiment, in response to the comparison result being that the reservoir volume is greater than the target reservoir volume, determining that the air state in the brake pipe is that the brake pipe contains air and determining the air content includes: detecting the air in the brake pipe to obtain the air content.

[0048] In this embodiment, after it is determined that the comparison result is that the reservoir volume is greater than the target reservoir volume, the air in the brake pipe under the pressure condition is detected to obtain the air content, wherein the air content can include: air content with a value of 0 and air content with a value not equal to 0, which are only exemplified and not specifically limited.

[0049] Optionally, after it is determined that the comparison result is that the reservoir volume is greater than the target reservoir volume, the air in the brake pipe under the pressure condition is detected to obtain the air content, under the condition that the pressure of the vehicle brake pipe is 13.1 bar, under the condition that the pressure of the vehicle brake pipe is 13.9 bar, under the condition that the pressure of the vehicle brake pipe is 14.1 bar, under the condition that the pressure of the vehicle brake pipe is 14.9 bar, under the condition that the pressure of the vehicle brake pipe is 15.1 bar, and under the condition that the pressure of the vehicle brake pipe is 15.9 bar, which are only exemplified and not specifically limited.

[0050] As an optional embodiment, in response to the comparison result being that the reservoir volume is not greater than the target reservoir volume, determining that the air state in the brake pipe is that the brake pipe does not contain air and determining the air content includes: performing zeroing processing on the air in the brake pipe to obtain the air content.

[0051] In this embodiment, after determining that the comparison result is that the fluid volume is not greater than the target fluid volume, the air in the brake pipe under the pressure condition is zeroed to obtain a zeroed air content, wherein the zeroed air content is 0.

[0052] Alternatively, after determining that the comparison result is that the fluid volume is not greater than the target fluid volume, the air in the brake pipe under the pressure condition is zeroed to obtain a zeroed air content, wherein the zeroed air content is 0.

[0053] As an optional embodiment, in step S105, in response to the air content exceeding the air content threshold, after discharging the air in the brake pipe, the detection method further comprises: detecting the remaining air in the discharged brake pipe to obtain a remaining air content; and in response to the remaining air content not exceeding the air content threshold, ending the discharging of the air in the brake pipe.

[0054] In this embodiment, after determining to discharge the air in the brake pipe under a certain pressure condition, the remaining air in the discharged brake pipe under the pressure condition is detected to obtain a remaining air content, and the obtained remaining air content is compared with the air content threshold. If the remaining air content does not exceed the air content threshold, the discharging of the air in the brake pipe is ended, and the brake pipe is used to brake the vehicle. If the remaining air content exceeds the air content threshold, the discharging of the air in the brake pipe is continued until the remaining air content does not exceed the air content threshold.

[0055] Optionally, in the case that the pressure of the brake pipe in the vehicle is 16.1 bar, the residual air in the discharged brake pipe under the pressure condition is detected to obtain a residual air content, the obtained residual air content is compared with an air content threshold, if the residual air content does not exceed the air content threshold, the discharging of the air in the brake pipe is ended, and the vehicle is braked by using the brake pipe, if the residual air content exceeds the air content threshold, the discharging of the air in the brake pipe is continued until the residual air content does not exceed the air content threshold.

[0056] Optionally, in the case that the pressure of the brake pipe in the vehicle is 16.9 bar, the residual air in the discharged brake pipe under the pressure condition is detected to obtain a residual air content, the obtained residual air content is compared with an air content threshold, if the residual air content does not exceed the air content threshold, the discharging of the air in the brake pipe is ended, and the vehicle is braked by using the brake pipe, if the residual air content exceeds the air content threshold, the discharging of the air in the brake pipe is continued until the residual air content does not exceed the air content threshold.

[0057] Optionally, in the case that the pressure of the brake pipe in the vehicle is 17.1 bar, the residual air in the discharged brake pipe under the pressure condition is detected to obtain a residual air content, the obtained residual air content is compared with an air content threshold, if the residual air content does not exceed the air content threshold, the discharging of the air in the brake pipe is ended, and the vehicle is braked by using the brake pipe, if the residual air content exceeds the air content threshold, the discharging of the air in the brake pipe is continued until the residual air content does not exceed the air content threshold.

[0058] Optionally, in the case that the pressure of the brake pipe in the vehicle is 17.9 bar, the residual air in the discharged brake pipe under the pressure condition is detected to obtain a residual air content, the obtained residual air content is compared with an air content threshold, if the residual air content does not exceed the air content threshold, the discharging of the air in the brake pipe is ended, and the vehicle is braked by using the brake pipe, if the residual air content exceeds the air content threshold, the discharging of the air in the brake pipe is continued until the residual air content does not exceed the air content threshold.

[0059] As an optional embodiment, in addition to the step S105 of discharging the air in the brake pipe in response to the air content exceeding the air content threshold, the detection method further comprises: in response to the air content not exceeding the air content threshold, braking the vehicle by using the brake pipe.

[0060] In this embodiment, after determining the air content in the brake pipe under a certain pressure condition, the relationship between the air content in the brake pipe under the pressure condition and the air content threshold value is compared, and if the air content does not exceed the air content threshold value, the brake pipe does not need to be vented, and the vehicle can be directly braked using the brake pipe.

[0061] Optionally, in the case where the pressure of the brake pipe in the vehicle is 18.1 bar, the relationship between the air content in the brake pipe under the pressure condition and the air content threshold value is compared, and if the air content does not exceed the air content threshold value, the brake pipe does not need to be vented, and the vehicle can be directly braked using the brake pipe.

[0062] Optionally, in the case where the pressure of the brake pipe in the vehicle is 18.9 bar, the relationship between the air content in the brake pipe under the pressure condition and the air content threshold value is compared, and if the air content does not exceed the air content threshold value, the brake pipe does not need to be vented, and the vehicle can be directly braked using the brake pipe.

[0063] Optionally, in the case where the pressure of the brake pipe in the vehicle is 19.1 bar, the relationship between the air content in the brake pipe under the pressure condition and the air content threshold value is compared, and if the air content does not exceed the air content threshold value, the brake pipe does not need to be vented, and the vehicle can be directly braked using the brake pipe.

[0064] Optionally, in the case where the pressure of the brake pipe in the vehicle is 19.9 bar, the relationship between the air content in the brake pipe under the pressure condition and the air content threshold value is compared, and if the air content does not exceed the air content threshold value, the brake pipe does not need to be vented, and the vehicle can be directly braked using the brake pipe.

[0065] The embodiment obtains a pressure storage amount curve of the brake pipe in the vehicle, determines a target storage amount corresponding to the storage amount of the brake pipe in the vehicle in the pressure storage amount curve, compares the storage amount with the target storage amount to obtain a comparison result, determines that the air state in the brake pipe contains air and determines the air content if the comparison result is that the storage amount is greater than the target storage amount, and determines that the air state in the brake pipe does not contain air and determines the air content if the comparison result is that the storage amount is not greater than the target storage amount, compares the relationship between the determined air content and an air content threshold value, discharges the air in the brake pipe if the air content exceeds the air content threshold value, and brakes the vehicle by using the brake pipe if the air content does not exceed the air content threshold value, thereby solving the technical problem of insufficient braking force caused by excessive air content in the brake pipe of the vehicle and achieving the technical effect of ensuring that the air content in the brake pipe is not excessive and the braking force is sufficient.

[0066] Embodiment 2

[0067] The technical solutions of the embodiments of the application will be illustrated below in combination with preferred embodiments.

[0068] In the current integrated brake control assembly of the vehicle, the brake circuit of the mass-produced vehicle model is usually directly discharged after being vacuumized and filled, and the air content in the brake circuit is not detected at the time of discharge, thereby causing the technical problem of insufficient braking force caused by excessive air content in the brake pipe of the vehicle. Therefore, a method for detecting air in the brake pipe of the vehicle is needed to ensure that the air content in the brake pipe is not excessive and the braking force is sufficient.

[0069] In a related technology, an electronic brake booster with mechanical backup function is disclosed, which comprises a shell, a support seat, a guide base, an input push rod, a main guide rod, a center bevel gear, a main shaft, a buffer seat and an output push rod. The guide base is located at the front of the shell, the main guide rod is slidably installed in the guide base, the front part of the main guide rod extends into the center hole of the main shaft, the support seat is fixedly installed on the rear part of the main guide rod, a two-stage spring is arranged between the support seat and the guide base, a three-stage spring is fixedly installed on the support seat, the front end of the input push rod penetrates the shell and is connected with the main guide rod, a one-stage spring is clamped on the input push rod, the center bevel gear is installed on the mounting seat and threadedly cooperates with the main shaft, the buffer seat comprises an insertion part and a push-out part, the insertion part is provided with a step and the front part of the step is inserted into the center hole of the main shaft, and the push-out part is connected with the output push rod. However, the electronic brake booster can only provide mechanical backup braking in the case of electric control failure without assistance, and cannot actively detect the air content of the brake pipe before the vehicle is discharged, thereby making it difficult to ensure that the air content in the brake pipe is not excessive and the braking force is sufficient.

[0070] However, the embodiment of the present application proposes an active detection mechanism of air content before the integrated brake control assembly is offline, which detects the air content in the brake circuit when the vehicle is offline, so as to avoid unqualified air content and solve the technical problem of insufficient braking force caused by excessive air content in the brake circuit.

[0071] Fig. 2(a) is a flow chart of an active air content detection method of an integrated brake control assembly according to an embodiment of the present application, as shown in Fig. 2(a), the detection method can include the following steps:

[0072] Step S201, enter the integrated brake control assembly (IBC) into a mechanical backup mode.

[0073] After the IBC is entered into the mechanical backup mode, step S202 is entered, after the IBC receives a detection instruction of air content, the motor pushes the piston to build pressure (10bar to 30bar can be calibrated) to obtain the actual liquid storage amount.

[0074] After obtaining the actual liquid storage amount, step S203 is entered to determine whether the actual liquid storage amount is greater than the theoretical liquid storage amount, if the actual liquid storage amount is not greater than the theoretical liquid storage amount, step S205 is entered, there is no air in the brake circuit, and the detection is ended, if the actual liquid storage amount is greater than the theoretical liquid storage amount, steps S204 and S206 are entered, there is air in the brake circuit, and it is determined whether the air content exceeds the air content threshold, if the air content exceeds the air content threshold, step S207 is entered, a corresponding alarm reminding strategy is executed, and the brake circuit is exhausted, if the air content does not exceed the air content threshold, the detection is ended, so as to reduce the risk of brake failure, delayed response or degraded assistance.

[0075] Fig. 2(b) is a schematic diagram of a pressure liquid storage amount curve according to an embodiment of the present application, as shown in Fig. 2(b), under the same pressure building condition, the actual liquid storage amount (such as V 实际 ) in the actual curve is greater than the theoretical liquid storage amount (such as V 理论 ) in the theoretical curve, wherein the pressure building condition can be set according to 10bar to 30bar.

[0076] In the embodiment, the IBC enters a mechanical backup mode, and after the IBC receives a detection instruction of air content, the pressure is built by pushing the piston through the motor, the actual liquid storage amount after building pressure is obtained, whether the actual liquid storage amount is greater than the theoretical value of the liquid storage amount is judged, whether there is air in the brake pipeline is determined, if there is air in the brake pipeline, whether the air content exceeds the air content threshold is judged, if the air content exceeds the air content threshold, the corresponding alarm reminding strategy is executed, and the brake pipeline is exhausted, if the air content does not exceed the air content threshold, the detection is ended, thereby solving the technical problem that the braking force is insufficient due to that the air content in the brake pipeline exceeds the standard, and achieving the technical effect that the air content in the brake pipeline does not exceed the standard and the braking force is sufficient.

[0077] Embodiment 3

[0078] According to the embodiment of the application, a vehicle brake pipeline air detection device is also provided. It should be noted that the vehicle brake pipeline air detection device can be used to execute the vehicle brake pipeline air detection method in embodiment 1.

[0079] Figure 3 is a schematic diagram of a vehicle brake pipeline air detection device according to the embodiment of the application. As shown in Figure 3 The vehicle brake pipeline air detection device 300 can include an acquisition unit 301, a first determination unit 302, a comparison unit 303, a second determination unit 304, and an exhaust unit 305.

[0080] The acquisition unit 301 is configured to acquire a pressure liquid storage amount curve of the vehicle brake pipeline, wherein the pressure liquid storage amount curve is used to represent the relationship between the pressure of the vehicle brake pipeline and the liquid storage amount of the vehicle brake pipeline.

[0081] The first determination unit 302 is configured to determine a target liquid storage amount corresponding to the liquid storage amount of the vehicle brake pipeline in the pressure liquid storage amount curve.

[0082] The comparison unit 303 is configured to compare the liquid storage amount with the target liquid storage amount to obtain a comparison result, wherein the comparison result is used to represent the relationship between the liquid storage amount and the target liquid storage amount.

[0083] The second determination unit 304 is configured to determine the air content in the brake pipeline based on the comparison result.

[0084] The exhaust unit 305 is configured to exhaust the air in the brake pipeline in response to the air content exceeding an air content threshold.

[0085] Optionally, the second determining unit 304 can comprise: a first response module, configured to, in response to the comparison result being that the liquid storage amount is greater than the target liquid storage amount, determine that the air state in the brake pipeline is that the brake pipeline contains air, and determine the air content; and a second response module, configured to, in response to the comparison result being that the liquid storage amount is not greater than the target liquid storage amount, determine that the air state in the brake pipeline is that the brake pipeline does not contain air, and determine the air content.

[0086] Optionally, the first response module can comprise: a detection sub-module, configured to detect the air in the brake pipeline to obtain the air content.

[0087] Optionally, the second response module can comprise: a zeroing sub-module, configured to perform zeroing processing on the air in the brake pipeline to obtain the air content.

[0088] Optionally, the air detection device 300 for the brake pipeline in the vehicle can further comprise: a detection unit, configured to detect the residual air in the brake pipeline after the air is discharged to obtain a residual air content; and a first response unit, configured to, in response to the residual air content not exceeding an air content threshold, end the discharging of the air in the brake pipeline.

[0089] Optionally, the air detection device 300 for the brake pipeline in the vehicle can further comprise: a second response unit, configured to, in response to the air content not exceeding the air content threshold, brake the vehicle by using the brake pipeline.

[0090] In this embodiment, the obtaining unit is configured to obtain a pressure liquid storage amount curve of a brake pipeline in a vehicle, wherein the pressure liquid storage amount curve is used to represent a relationship between pressure of the brake pipeline in the vehicle and liquid storage amount of the brake pipeline in the vehicle; the first determining unit is configured to determine, in the pressure liquid storage amount curve, a target liquid storage amount corresponding to the liquid storage amount of the brake pipeline in the vehicle; the comparison unit is configured to compare the liquid storage amount with the target liquid storage amount to obtain a comparison result, wherein the comparison result is used to represent a relationship between the liquid storage amount and the target liquid storage amount; the second determining unit is configured to determine, based on the comparison result, an air content in the brake pipeline; and the discharging unit is configured to, in response to the air content exceeding an air content threshold, discharge the air in the brake pipeline, thereby solving the technical problem of insufficient braking force caused by the air content in the brake pipeline exceeding a standard, and achieving the technical effect of ensuring that the air content in the brake pipeline does not exceed the standard and the braking force is sufficient.

[0091] Embodiment 4

[0092] According to the embodiments of the present application, a computer readable storage medium is further provided, which comprises a stored program, wherein the program executes the air detection method for the brake pipeline in the vehicle in the embodiment 1.

[0093] Embodiment 5

[0094] According to the embodiment of the present application, a processor is further provided, which is used for running a program, wherein the program is executed to implement the air detection method of the brake pipe in the vehicle in embodiment 1 when the program is run by the processor.

[0095] Embodiment 6

[0096] According to the embodiment of the present application, a vehicle is further provided, which is used for executing any one of the air detection methods of the brake pipe in the vehicle in embodiment 1.

[0097] The above-mentioned embodiment numbers of the present application are only for description, and do not represent the advantages and disadvantages of the embodiments.

[0098] In the above-mentioned embodiments of the present application, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0099] In several embodiments provided in the present application, it should be understood that the disclosed technical contents can be implemented by other ways. Among them, the above-mentioned device embodiments are only schematic, for example, the division of units can be a logical function division, and actual implementation can have another division way, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the displayed or discussed units can be indirect coupling or communication connection through some interfaces, units or modules, which can be electrical or other forms.

[0100] The units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, they can be located in one place, or they can be distributed to multiple units. According to actual needs, part or all of the units can be selected to achieve the purpose of the present embodiment scheme.

[0101] In addition, each functional unit in each embodiment of the present application can be integrated in one processing unit, or each unit can exist physically, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be realized in the form of hardware or in the form of software functional unit.

[0102] The integrated unit, if implemented in the form of a software function unit and sold or used as an independent product, can be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application, essentially or in other words, the part that contributes to the prior art or the whole or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium, including a plurality of instructions to make a computer device (which can be a personal computer, a server or a network device, etc.) execute all or part of the steps of the embodiments of the present application. The aforementioned storage medium includes: a U disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a mobile hard disk, a magnetic disk or an optical disk, and various media that can store program codes.

[0103] The above is only the preferred embodiment of the present application, and it should be pointed out that for those skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should be considered as the protection scope of the present application.

Claims

1. A method of detecting air in a brake pipe in a vehicle, characterized by, The method comprises: obtaining a pressure-accumulation curve of a brake pipe in a vehicle, wherein the pressure-accumulation curve is used to represent a relationship between pressure of the brake pipe in the vehicle and accumulation of the brake pipe in the vehicle; determining a target accumulation corresponding to the accumulation of the brake pipe in the vehicle in the pressure-accumulation curve; comparing the accumulation with the target accumulation to obtain a comparison result, wherein the comparison result is used to represent a relationship between the accumulation and the target accumulation; determining an air content in the brake pipe based on the comparison result; discharging air in the brake pipe in response to the air content exceeding an air content threshold; determining the air content in the brake pipe based on the comparison result comprises: in response to the comparison result being that the accumulation is greater than the target accumulation, determining that an air state in the brake pipe is that the brake pipe contains air and determining the air content; and in response to the comparison result being that the accumulation is not greater than the target accumulation, determining that the air state in the brake pipe is that the brake pipe does not contain air and determining the air content.

2. The method of claim 1, wherein, in response to the comparison result being that the accumulation is greater than the target accumulation, determining that the air state in the brake pipe is that the brake pipe contains air and determining the air content comprises: detecting air in the brake pipe to obtain the air content.

3. The method of claim 1, wherein, in response to the comparison result being that the accumulation is not greater than the target accumulation, determining that the air state in the brake pipe is that the brake pipe does not contain air and determining the air content comprises: zeroing air in the brake pipe to obtain the air content.

4. The method of claim 1, wherein, after discharging the air in the brake pipe in response to the air content exceeding the air content threshold, the method further comprises: detecting remaining air in the brake pipe after being discharged to obtain a remaining air content; ending discharging the air in the brake pipe in response to the remaining air content not exceeding the air content threshold.

5. The method of claim 1, wherein, in addition to discharging the air in the brake pipe in response to the air content exceeding the air content threshold, the method further comprises: in response to the air content not exceeding the air content threshold, braking the vehicle by using the brake pipe.

6. An air detection device for a brake pipe in a vehicle, characterized by The method comprises: an obtaining unit is configured to obtain a pressure-accumulation curve of a brake pipe in a vehicle, wherein the pressure-accumulation curve is used to represent a relationship between pressure of the brake pipe in the vehicle and accumulation of the brake pipe in the vehicle; a first determining unit is configured to determine a target accumulation corresponding to the accumulation of the brake pipe in the vehicle in the pressure-accumulation curve; a comparing unit is configured to compare the accumulation with the target accumulation to obtain a comparison result, wherein the comparison result is used to represent a relationship between the accumulation and the target accumulation; a second determining unit is configured to determine an air content in the brake pipe based on the comparison result; a venting unit configured to vent air in the brake pipe in response to the air content exceeding an air content threshold; the second determining unit is further configured to determine that the air state in the brake pipe is that air is contained in the brake pipe and determine the air content in response to the comparison result being that the liquid storage amount is greater than the target liquid storage amount, and determine that the air state in the brake pipe is that air is not contained in the brake pipe and determine the air content in response to the comparison result being that the liquid storage amount is not greater than the target liquid storage amount.

7. A computer readable storage medium characterized in that, The computer readable storage medium comprises a stored program, wherein the program, when executed, controls a device in which the computer readable storage medium is located to perform the air detection method for a brake pipe in a vehicle according to any one of claims 1 to 5.

8. A processor, comprising: The processor is configured to execute a program, wherein the program, when executed by the processor, performs the air detection method for a brake pipe in a vehicle according to any one of claims 1 to 5.

9. A vehicle characterized by comprising: The vehicle is configured to perform the air detection method for a brake pipe in a vehicle according to any one of claims 1 to 5.

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