CN110194139B - Brake test state determining method and device and vehicle - Google Patents
Brake test state determining method and device and vehicle Download PDFInfo
- Publication number
- CN110194139B CN110194139B CN201910456917.5A CN201910456917A CN110194139B CN 110194139 B CN110194139 B CN 110194139B CN 201910456917 A CN201910456917 A CN 201910456917A CN 110194139 B CN110194139 B CN 110194139B
- Authority
- CN
- China
- Prior art keywords
- signal
- brake
- state
- inspection
- determining
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The embodiment of the invention discloses a method and a device for determining a brake test state and a vehicle. The method provided by the embodiment of the invention comprises the following steps: when obtaining the brake inspection signal, obtain supplementary judgement signal, the brake inspection signal includes: a primary check signal and/or a secondary check signal; determining the working state of a brake pedal according to the auxiliary judgment signal; and determining a brake inspection state according to the working state and the brake inspection signal. According to the technical scheme in the embodiment of the invention, the brake inspection state is accurately determined through the auxiliary judgment signal, the consistency verification fault is avoided, and the potential safety hazard of vehicle driving is reduced.
Description
Technical Field
The embodiment of the invention relates to the technical field of automatic control, in particular to a method and a device for determining a brake test state and a vehicle.
Background
At present, along with the development of hybrid electric vehicles, the whole vehicle power system is changed greatly, the safety of the whole vehicle control is more and more outstanding, and the whole vehicle controller carries out consistency check by detecting two paths of brake check signals output by a brake pedal. Whether the verification result is correct or not plays a crucial role in driving safety.
In the prior art, a main brake signal and an auxiliary brake signal in two paths of brake test signals are set to be opposite signals by adopting a mechanical means, when a brake is stepped on, a main brake signal switch is switched on, the auxiliary brake signal is switched off, and when the brake is released, the auxiliary brake signal is switched on, and the main brake signal is switched off; whether the brake breaks down is judged based on the consistency of the main brake signal and the auxiliary brake signal, but because the problem of mechanical dispersion exists when the brake signal switch is generated, the closing of the main brake switch and the closing of the auxiliary brake switch are not continuous, the time difference exists in the middle, when the brake is just carried out in the time difference range, the brake consistency detection can be caused to break down, the brake detection state can not be accurately judged, and further the safety hazard exists in the driving of a user vehicle.
Disclosure of Invention
The invention provides a method and a device for determining a brake test state and a vehicle, which are used for realizing the accurate determination of the brake test state of the vehicle.
In a first aspect, an embodiment of the present invention provides a method for determining a brake test state, where the method includes:
when obtaining the brake inspection signal, obtain supplementary judgement signal, the brake inspection signal includes: a primary check signal and/or a secondary check signal;
determining the working state of a brake pedal according to the auxiliary judgment signal;
and determining a brake inspection state according to the working state and the brake inspection signal.
In a second aspect, an embodiment of the present invention further provides a brake test status determining apparatus, where the apparatus includes:
the parameter acquisition module is used for acquiring an auxiliary judgment signal when acquiring a brake inspection signal, wherein the brake inspection signal comprises: a primary check signal and/or a secondary check signal;
the state generating module is used for determining the working state of the brake pedal according to the auxiliary judging signal;
and the inspection state determining module is used for determining a brake inspection state according to the working state and the brake inspection signal.
In a third aspect, an embodiment of the present invention further provides a vehicle, including:
one or more controllers;
a memory for storing one or more programs,
when the one or more programs are executed by the one or more processors, the one or more processors may be caused to implement the brake test status determination method according to any one of the embodiments of the present invention.
According to the embodiment of the invention, when the brake inspection signal comprising the main inspection signal and/or the auxiliary inspection signal is acquired, the auxiliary judgment signal is acquired, the working state of the brake pedal is determined according to the auxiliary judgment signal, and the brake inspection state is determined according to the working state of the brake pedal and the brake inspection signal, so that the accurate determination of the brake inspection state of the vehicle is realized, and the potential safety hazard caused by the misjudgment of the brake inspection state of the vehicle is avoided.
Drawings
FIG. 1 is a timing diagram of waveforms of a main check signal and a sub check signal in a brake check signal in the related art;
fig. 2 is a flowchart of a method for determining a brake test status according to an embodiment of the present invention;
fig. 3 is a flowchart of a method for determining a brake test status according to a second embodiment of the present invention;
fig. 4 is an exemplary diagram of a method for determining a brake test status according to a second embodiment of the present invention;
fig. 5 is a schematic structural diagram of a brake test status determining apparatus according to a third embodiment of the present invention;
fig. 6 is a schematic structural diagram of a vehicle according to a fourth embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be noted that, for convenience of description, only a part of the structures related to the present invention, not all of the structures, are shown in the drawings, and furthermore, embodiments of the present invention and features of the embodiments may be combined with each other without conflict.
Example one
FIG. 1 is a timing diagram of waveforms of a main check signal and a sub check signal in a brake check signal in the related art; referring to fig. 1, before the vehicle controller controls the vehicle according to the braking signal, the vehicle controller must determine that the braking signal is valid according to two braking inspection signals, the two brake test signals need to pass consistency check, in the prior art, the two brake test signals can be a main test signal and an auxiliary test signal, when the brake pedal is pressed down or released, the main checking signal and the auxiliary checking signal are not synchronized in time sequence due to the mechanical dispersion problem, as shown in fig. 1, when, in the neutral position, the driver depresses the brake pedal again or releases the brake pedal, because the level of the auxiliary inspection signal is not obtained, consistency check cannot be carried out on the main inspection signal and the auxiliary inspection signal, the brake inspection state cannot be accurately obtained in time, and potential safety hazards are caused to vehicle running.
Fig. 2 is a flowchart of a method for determining a brake test state according to an embodiment of the present invention, where the method is applicable to a situation where a vehicle brake test state is accurately obtained, and the method may be implemented by a vehicle brake test state determining device, where the device may be implemented in a hardware and/or software manner, and may be generally integrated in a vehicle controller, and the method for determining a brake test state according to an embodiment of the present invention specifically includes the following steps:
Wherein, the brake check signal can be the signal of two tunnel brake switches in corresponding the vehicle, can be for the signal that corresponds the circuit in two tunnel brake switches respectively, it is exemplary, brake switch can have two tunnel signals, the switching signal of heavy current and the switching signal of undercurrent, heavy current switching signal can often be in the off-state, undercurrent switching signal can often be in the connected state, when brake pedal is stepped on, heavy current switching signal can become the connected state by the off-state, undercurrent switching signal can become the disconnected state by the connected state, the brake check signal can include heavy current switching signal and undercurrent switching signal.
In this embodiment, the auxiliary judgment signal may be a signal for assisting in judging the operating state of the brake pedal, may be a component that cooperates with the brake pedal to effect braking of the vehicle, e.g., when the brake pedal is depressed, the pressure in the master cylinder is increased, the vehicle produces a braking effect, and when the pressure in the master cylinder is increased, the auxiliary judgment signal can also comprise vacuum signals of vacuum booster, vacuum tank and other vacuum boosting components, the main inspection signal can be signals corresponding to two paths of brake switch main switches in the brake inspection signal, the auxiliary inspection signal can be signals corresponding to two paths of brake switch auxiliary switches in the brake inspection signal, for example, the primary check signal may be a high current switching signal and the secondary check signal may be a low current switching signal.
In the embodiment of the present invention, when the brake test signals corresponding to the two brake switches are obtained, the obtained brake test signals may only include the main test signal or the auxiliary test signal, or may include both the main test signal and the auxiliary test signal, that is, when the main test signal, the auxiliary test signal, or both the main test signal and the auxiliary test signal are obtained, the auxiliary determination signal may be obtained.
And 102, determining the working state of the brake pedal according to the auxiliary judgment signal.
When the brake pedal is stepped on, the brake master cylinder connected with the brake pedal generates pressure to brake and decelerate the vehicle, the brake pedal is also connected with the brake vacuum boosting component, the vacuum boosting component and the brake pedal compress the brake master cylinder together, the pressure of the brake master cylinder can be increased to realize vehicle braking, the working state of the brake pedal can comprise a braking state and a non-braking state, when the brake pedal is stepped on, the working state of the brake pedal can be in the braking state, and when the brake pedal is lifted up, the working state of the brake pedal can be in the non-braking state.
Specifically, the brake pedal in the vehicle can realize a braking function together with other brake components in the vehicle, the working state of the brake pedal can be determined according to signals of other brake components, the obtained signals of the brake components can be compared with a pre-stored signal threshold, if the signals of the brake components meet the requirement of the signal threshold, it can be indicated that the brake pedal and the brake components realize the vehicle braking function together, and the working state of the brake pedal can be determined.
And 103, determining a brake inspection state according to the working state and the brake inspection signal.
The brake test state can be a brake test signal state, can be a brake test signal consistent state and a brake test signal inconsistent state, the vehicle controller can realize different control over the vehicle according to the brake test state, if the brake test state is normal, the vehicle controller can control the vehicle brake lamp to be turned on according to the brake test state, if the brake test state is abnormal, the vehicle controller can send out a fault alarm according to the brake test state, and if the brake test state is abnormal, the vehicle controller can send out a brake signal lamp switch unreliable signal.
Specifically, the brake test state can be determined jointly according to the working state of the brake pedal and the brake test signal, the signal value of the working state of the brake pedal and the brake test signal can be operated, the brake test state of the vehicle can be determined when the high and low levels corresponding to the operation result, it can be understood that the working state of the brake pedal and the brake test signal can be compared with preset conditions, the preset conditions and the brake test state can be stored in an associated mode, and the corresponding brake test state can be determined based on the comparison result.
According to the technical scheme of the embodiment of the invention, when the brake inspection signal is acquired, the auxiliary judgment signal is actively acquired, the working state of the brake pedal is determined according to the auxiliary judgment signal, and the brake inspection state is determined based on the working state and the brake inspection signal, so that the accurate determination of the vehicle brake inspection state is realized, the misjudgment rate of the brake inspection state is reduced, and the potential safety hazard of the vehicle caused by the misjudgment of the brake inspection state can be eliminated.
Example two
Fig. 3 is a flowchart of a method for determining a brake test state according to a second embodiment of the present invention, which is embodied on the basis of the second embodiment of the present invention, and the method for determining a brake test state according to the second embodiment of the present invention includes:
The brake master cylinder can be a component of a vehicle brake system and can realize a brake function by cooperating with a brake pedal, the brake master cylinder can convert mechanical force generated by the brake pedal into hydraulic force so as to brake the vehicle, and the brake vacuum boosting component can amplify the mechanical force output by the brake pedal and can realize vehicle brake by cooperating with the brake pedal.
Specifically, when the brake test signal is acquired, the acquired brake test signal may include a main test signal or an auxiliary test signal, and the brake test signal may also include the main test signal and the auxiliary test signal at the same time, and when the brake test signal is acquired, the pressure signal of the brake master cylinder and the vacuum signal of the vacuum sensor arranged in the brake vacuum boosting component may be acquired through the pressure sensor arranged in the brake master cylinder, and the acquired pressure signal and the acquired vacuum signal may be used as an auxiliary judgment signal, and it may be understood that the auxiliary judgment signal may be only the pressure signal of the brake master cylinder or the vacuum signal of the brake vacuum boosting component.
The signal value can be a numerical value corresponding to the auxiliary judgment signal, can include a pressure value of a brake master cylinder and/or a vacuum value of a brake vacuum boosting component, and can be acquired by a pressure sensor and a vacuum sensor respectively; the preset threshold value may be a parameter value indicating that the vehicle brake system is operating, may include a minimum pressure value of the pressure master cylinder and a minimum pressure value of the brake vacuum booster, etc., and may be one value or a plurality of values, which may be stored in the vehicle in advance.
Specifically, the pressure value of the master cylinder and/or the vacuum degree of the brake vacuum boosting component may be extracted, and the obtained pressure value and the obtained vacuum degree may be respectively compared with a preset threshold value stored in advance, for example, the pressure value of the master cylinder may be compared with a first preset threshold value of 2bar, and the vacuum degree of the brake vacuum boosting component may be compared with a second preset threshold value of 50 hpa.
And 203, if the signal value is greater than or equal to a preset threshold value, determining that the working state of the brake pedal is a braking state, otherwise, determining that the working state of the brake pedal is a non-braking state.
The operating state may be a state where the brake pedal is located when the brake checking signal is acquired, and may be a stepping-down braking state or a lifting-up non-braking state, where the braking state may be a state where the brake pedal is stepped down to provide mechanical force to a vehicle braking system, and the non-braking state may be a state where the brake pedal is not stepped down and the vehicle system does not acquire the mechanical force output by the brake pedal.
Specifically, if the obtained pressure value of the brake master cylinder and the obtained vacuum degree of the brake vacuum boosting component are respectively greater than or equal to the preset threshold values, it can be determined that the brake pedal provides mechanical force for a vehicle brake system, and the working state of the brake pedal is the brake state in which the brake pedal is pressed, otherwise, it can be determined that the brake pedal does not provide mechanical force for the vehicle brake pedal, and the working state of the brake pedal is the non-brake state in which the brake pedal is not pressed.
And 204, when the brake inspection signals acquired within the preset time length only comprise main inspection signals or auxiliary inspection signals, determining that the brake inspection state is a fault state.
Wherein, the preset duration may be a duration for obtaining a brake test signal, the brake test signal can be continuously obtained within the preset duration, the preset duration may be 200ms, the fault state may refer to a state where signal states corresponding to the main test signal and the auxiliary test signal are inconsistent, for example, if the main test signal is a large current switch signal, the auxiliary test signal is a small current switch signal, the large current switch signal may be in a disconnected state and the small current switch signal may be in a connected state, when the brake pedal is stepped on, the large current switch signal may be changed from the disconnected state to the connected state, the small current switch signal may be changed from the connected state to the disconnected state, but when the brake pedal is stepped on, the large current switch signal is in the connected state and the small current switch is also in the connected state, the main test signal corresponds to the brake pedal being stepped on, the auxiliary test signal corresponds to the brake pedal being lifted, the signal states of the main check signal and the auxiliary check signal are inconsistent, and the brake check state can be determined to be a fault state.
Specifically, the brake test signals can be obtained within a preset time period, if the brake test signals within the preset time period are only main test signals or only auxiliary test signals, only one of the brake test signals is obtained, and the other brake test signal cannot be obtained.
And step 205, when the brake inspection signals acquired within the preset time period comprise main inspection signals and auxiliary inspection signals, determining the brake inspection state according to the working state of the brake pedal and the main inspection signals and the auxiliary inspection signals.
The brake test signal acquired within the preset time period, including the main test signal and the auxiliary test signal, may refer to the main test signal and the auxiliary test signal acquired within a period of time, for example, the main test signal and the auxiliary test signal may be acquired within 100 ms.
In the embodiment of the present invention, when the main check signal and the auxiliary check signal are obtained within the preset time period, the check state of the brake may be determined based on the main check signal, the auxiliary check signal, and the operating state of the brake pedal, for example, the main check signal is at a high level, the auxiliary check signal is at a low level, and the brake pedal is in a braking state, and the check state of the brake may be determined to be a normal state.
And step 206, recording the brake inspection state, and sending out a fault alarm when the number of times of the fault state in the brake inspection state exceeds the number of times of a threshold value.
The threshold number may be the maximum upper limit number of times of the fault state, when the number of times exceeds the threshold number of times, the vehicle is easy to have driving safety, and the threshold number of times may be set according to a safety specification, for example, may be set to 3.
Specifically, the brake test state can be recorded according to the time sequence, further, the fault state that appears in the brake test state can only be recorded, the fault state number of times in a period of time can be counted, when the fault state number of times exceeds the preset threshold number of times, a fault alarm can be generated, the fault alarm can be displayed in a display screen of a vehicle, and the fault alarm can be broadcasted to a user in a language mode.
According to the technical scheme of the embodiment of the invention, when the brake inspection signal is obtained, the auxiliary judgment signal comprising the pressure signal of the brake main cylinder and the vacuum signal of the brake vacuum boosting component is obtained, the signal value in the auxiliary judgment signal is extracted, the signal value is compared with the preset threshold value, if the signal value is greater than or equal to the preset threshold value, the working state of the brake pedal is determined to be a braking state, otherwise, the working state is a non-braking state, when only the main check signal or the auxiliary check signal is acquired within the preset time, the brake check state is determined to be a fault state, when the main check signal and the auxiliary check signal are acquired within the preset time, the brake detection state can be determined according to the working state of the brake pedal, the main detection signal and the auxiliary detection signal, the brake detection state is recorded, and when the failure frequency of the brake detection state exceeds the threshold frequency, a failure alarm is sent out; through the inspection to brake pedal operating condition, ensure the accuracy of main inspection signal and vice inspection signal, improve the authenticity of brake inspection signal, promoted the rate of accuracy that brake inspection state was confirmed, avoid the brake to appear the uniformity trouble, reduced the potential safety hazard that the vehicle travel.
On the basis of the technical scheme, the method for determining the brake inspection state according to the working state of the brake pedal and the main inspection signal and the auxiliary inspection signal comprises the following steps:
comparing the signal states of the main and auxiliary check signals; and if the working state of the brake pedal is a braking state and the main detection signal is consistent with the auxiliary detection signal, determining that the braking detection state is a normal state, and otherwise, determining that the braking detection state is a fault state.
The signal state may be a state of the brake system corresponding to the primary check signal and the secondary check signal.
In an embodiment of the present invention, the signal values of the main check signal and the sub check signal may be compared, for example, if the main check signal is at high level 1, the sub check signal is at low level 0, and the vehicle states corresponding to the main check signal and the sub check signal are both in the braking and decelerating states, the signal states of the main check signal and the auxiliary check signal are considered to be consistent, if the signal states of the main check signal and the auxiliary check signal are consistent and the working state of the brake pedal is a braking state, it is possible to determine that the brake test state is a normal state, otherwise, it is determined that the brake test state is a fault state, for example, the brake checking state may be determined to be a failure state in which the signal states of the master check signal and the slave check signal are not identical and the operating state of the brake pedal is a non-braking state, and the signal states of the master check signal and the slave check signal are not identical and the operating state of the brake pedal is a braking state.
Fig. 4 is an exemplary diagram of a method for determining a brake test state according to a second embodiment of the present invention, and referring to fig. 4, a delay anti-shake process may be performed on a main/sub test signal to remove signal glitches and interference; the method for delaying anti-shake comprises the steps that after a brake test signal is detected, a period of time is delayed, and after the delay time, if the brake test signal exists in the delay period all the time, the brake test signal after the delay time is transmitted; if the brake test signal disappears before the delay time is up, the brake test signal is considered to be absent; the anti-shake treatment when the brake pedal is released is similar, if the duration time of a signal required to keep a certain state needs to exceed a threshold value, the brake inspection signal is considered to be valid, otherwise, the brake inspection signal is considered to be invalid; if the pressure signal of the brake master cylinder is available and effective, when the pressure of the brake master cylinder is higher than a preset threshold value, consistency check is carried out on the main/auxiliary brake check signal, and if the pressure signal of the brake master cylinder is ineffective, whether the brake vacuum boosting component has no fault is checked; if the brake vacuum boosting part has no fault, after the vacuum pump stops working, when the pressure rising amplitude in the vacuum booster is higher than a reference pressure by a preset threshold value compared with the pressure rising amplitude, consistency check is carried out on the main/auxiliary check signal, if the main/auxiliary check signal is inconsistent, the main/auxiliary check signal is delayed for a longer time to carry out the consistency check again, if the main/auxiliary check signal is still inconsistent, after the delay time is reached, the fault state is recorded, if the main/auxiliary check signal is consistent, the brake check state detection is finished, when the fault state occurs, as long as the working state of the brake pedal is the brake state, the brake signal is determined as the brake state, and the brake lamp can be controlled to be turned on according to the brake signal; if the recorded failure times exceed a certain threshold value in the current driving period, the failure of the main and auxiliary brake switches is considered, and a failure alarm can be sent out.
EXAMPLE III
Fig. 5 is a schematic structural diagram of a brake test state determining apparatus provided in the third embodiment of the present invention, which is capable of executing the brake test state determining method provided in any embodiment of the present invention, and has functional modules and beneficial effects corresponding to the executing method. The device can be implemented by software and/or hardware, and specifically comprises: a parameter acquisition module 301, a state generation module 302 and a verification state determination module 303.
Wherein, the parameter obtaining module 301 is configured to obtain an auxiliary determination signal when obtaining a brake checking signal, where the brake checking signal includes: a primary check signal and/or a secondary check signal.
And the state generating module 302 is configured to determine the working state of the brake pedal according to the auxiliary judgment signal.
And the checking state determining module 303 is configured to determine a brake checking state according to the working state and the brake checking signal.
According to the technical scheme of the embodiment of the invention, when the brake test signal comprising the main test signal and/or the auxiliary test signal is obtained through the parameter obtaining module, the auxiliary judgment signal is obtained, the state generating module determines the working state of the brake pedal according to the auxiliary judgment signal, and the test state determining module determines the brake test state according to the working state of the brake pedal and the brake test signal, so that the accurate determination of the brake test state of the vehicle is realized, and the potential safety hazard caused by the misjudgment of the brake test state of the vehicle is avoided.
On the basis of the above embodiment, the auxiliary judgment signal in the parameter obtaining module includes: a pressure signal of a brake master cylinder and/or a vacuum signal of a brake vacuum boosting component.
On the basis of the above embodiment, the state generation module includes:
and the threshold value comparison unit is used for extracting the signal value of the auxiliary judgment signal and comparing the signal value with a preset threshold value.
And the pedal state generating unit is used for determining that the working state of the brake pedal is a braking state if the signal value is greater than or equal to a preset threshold value, and otherwise, determining that the working state of the brake pedal is a non-braking state.
On the basis of the above embodiment, the inspection state determination module includes:
the first determining unit is used for determining that the brake checking state is a fault state when the brake checking signals acquired within the preset time length only comprise the main checking signals or the auxiliary checking signals.
And the second determining unit is used for determining the brake inspection state according to the working state of the brake pedal and the main inspection signal and the auxiliary inspection signal when the brake inspection signal acquired within the preset time length comprises the main inspection signal and the auxiliary inspection signal.
On the basis of the above embodiment, the second determination unit includes:
and the comparison subunit is used for comparing the signal states of the main check signal and the auxiliary check signal.
And the state determining subunit is used for determining that the brake inspection state is a normal state if the working state of the brake pedal is an effective state and the main inspection signal is consistent with the auxiliary inspection signal, and otherwise, determining that the brake inspection state is a fault state.
On the basis of the above embodiment, the apparatus further includes:
and the alarm module is used for recording the brake state and sending out fault alarm when the frequency of the fault state in the brake state exceeds the frequency of a threshold value.
The device can execute the method provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method. For technical details not described in detail in this embodiment, reference may be made to the method provided in any embodiment of the present invention.
Example four
Fig. 6 is a schematic structural diagram of a vehicle according to a fourth embodiment of the present invention, as shown in fig. 6, the vehicle includes a controller 60, a memory 61, an input device 62, and an output device 63; the number of the controllers 60 may be one or more, and one controller 60 is exemplified in fig. 6; the controller 60, the memory 61, the input device 62, and the output device 63 in the vehicle may be connected by a bus or other means, and the bus connection is exemplified in fig. 6.
The memory 61 is a computer-readable storage medium that can be used to store software programs, computer-executable programs, and modules, such as program modules corresponding to the brake verification state determination method in the embodiment of the present invention (for example, the parameter acquisition module 301, the state generation module 302, and the verification state determination module 303 in the brake verification state determination device). The controller 60 executes various functional applications and data processing of the vehicle by executing software programs, instructions, and modules stored in the memory 61, that is, implements the above-described brake test state determination method.
The memory 61 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal, and the like. Further, the memory 61 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some examples, the memory 61 may further include memory remotely located from the controller 60, which may be connected to the vehicle over a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The input device 62 may be used to receive input numeric or character information and generate key signal inputs relating to user settings and function controls of the vehicle. The output device 63 may include a display device such as a display screen.
Further, on the basis of the above embodiment, the vehicle further comprises a brake pedal, a brake master cylinder and a brake vacuum component, wherein the brake pedal is used for generating a brake test signal; a master cylinder for generating a pressure signal detected by a pressure sensor; and a brake vacuum component for generating a vacuum signal detected by the vacuum sensor.
EXAMPLE five
An embodiment of the present invention further provides a storage medium containing computer-executable instructions, which when executed by a computer processor, perform a method for determining a brake test status, the method including:
when obtaining the brake inspection signal, obtain supplementary judgement signal, the brake inspection signal includes: a primary check signal and/or a secondary check signal;
determining the working state of a brake pedal according to the auxiliary judgment signal;
and determining a brake inspection state according to the working state and the brake inspection signal.
Of course, the storage medium containing the computer-executable instructions provided by the embodiments of the present invention is not limited to the method operations described above, and may also perform related operations in the brake test status determination method provided by any embodiments of the present invention.
From the above description of the embodiments, it is obvious for those skilled in the art that the present invention can be implemented by software and necessary general hardware, and certainly, can also be implemented by hardware, but the former is a better embodiment in many cases. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which can be stored in a computer-readable storage medium, such as a floppy disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a FLASH Memory (FLASH), a hard disk or an optical disk of a computer, and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device) to execute the methods according to the embodiments of the present invention.
It should be noted that, in the embodiment of the brake test status determining apparatus, the included units and modules are only divided according to functional logic, but are not limited to the above division, as long as the corresponding functions can be implemented; in addition, specific names of the functional units are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present invention.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (7)
1. A method for determining a brake test state, comprising:
when obtaining the brake inspection signal, obtain supplementary judgement signal, the brake inspection signal includes: the main inspection signal is high-current switch information, and the auxiliary inspection signal is a low-current switch signal; the auxiliary judgment signal comprises: a pressure signal of a brake master cylinder and/or a vacuum signal of a brake vacuum boosting component;
determining the working state of a brake pedal according to the auxiliary judgment signal;
determining a brake test state according to the working state and the brake test signal;
the brake inspection state is determined according to the working state and the brake inspection signal, and the method comprises the following steps:
when the brake inspection signals acquired within the preset time length only comprise main inspection signals or auxiliary inspection signals, determining that the brake inspection state is a fault state;
when the brake test signal that obtains in predetermineeing the duration includes main test signal and vice test signal, according to brake pedal's operating condition reaches main test signal and vice test signal confirm the brake test state, include: comparing the signal states of the main and auxiliary check signals; and if the working state of the brake pedal is an effective state and the main detection signal is consistent with the auxiliary detection signal, determining that the brake detection state is a normal state, and otherwise, determining that the brake detection state is a fault state.
2. The method of claim 1, wherein determining the operating state of the brake pedal based on the auxiliary determination signal comprises:
extracting a signal value of the auxiliary judgment signal, and comparing the signal value with a preset threshold value;
and if the signal value is greater than or equal to a preset threshold value, determining that the working state of the brake pedal is a braking state, otherwise, determining that the working state of the brake pedal is a non-braking state.
3. The method of claim 1, further comprising:
and recording the brake inspection state, and sending out a fault alarm when the number of times of the fault state in the brake inspection state exceeds the threshold number of times.
4. A brake test state determining apparatus, comprising:
the parameter acquisition module is used for acquiring an auxiliary judgment signal when acquiring a brake inspection signal, wherein the brake inspection signal comprises: the main inspection signal is high-current switch information, and the auxiliary inspection signal is a low-current switch signal; the auxiliary judgment signal comprises: a pressure signal of a brake master cylinder and/or a vacuum signal of a brake vacuum boosting component;
the state generating module is used for determining the working state of the brake pedal according to the auxiliary judging signal;
the inspection state determining module is used for determining a brake inspection state according to the working state and the brake inspection signal;
a check state determination module comprising:
the first determining unit is used for determining that the brake inspection state is a fault state when the brake inspection signals acquired within the preset time length only comprise main inspection signals or auxiliary inspection signals;
the second determining unit is used for determining a brake inspection state according to the working state of the brake pedal and the main inspection signal and the auxiliary inspection signal when the brake inspection signal acquired within the preset time length comprises the main inspection signal and the auxiliary inspection signal;
the second determination unit includes:
a comparison subunit, configured to compare signal states of the main check signal and the sub check signal;
and the state determining subunit is used for determining that the brake inspection state is a normal state if the working state of the brake pedal is an effective state and the main inspection signal is consistent with the auxiliary inspection signal, and otherwise, determining that the brake inspection state is a fault state.
5. The apparatus of claim 4, wherein the verification status determination module comprises:
the threshold value comparison unit is used for extracting a signal value of the auxiliary judgment signal and comparing the signal value with a preset threshold value;
and the pedal state generating unit is used for determining that the working state of the brake pedal is a braking state if the signal value is greater than or equal to a preset threshold value, and otherwise, determining that the working state of the brake pedal is a non-braking state.
6. A vehicle, characterized in that the vehicle comprises:
one or more controllers;
a memory for storing one or more programs,
when the one or more programs are executed by the one or more controllers, cause the one or more controllers to implement the brake test status determination method of any one of claims 1-3.
7. The vehicle of claim 6, further comprising:
the brake pedal is used for generating a brake test signal;
a master cylinder for generating a pressure signal detected by a pressure sensor;
and a brake vacuum component for generating a vacuum signal detected by the vacuum sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910456917.5A CN110194139B (en) | 2019-05-29 | 2019-05-29 | Brake test state determining method and device and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910456917.5A CN110194139B (en) | 2019-05-29 | 2019-05-29 | Brake test state determining method and device and vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110194139A CN110194139A (en) | 2019-09-03 |
| CN110194139B true CN110194139B (en) | 2021-01-29 |
Family
ID=67753449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910456917.5A Active CN110194139B (en) | 2019-05-29 | 2019-05-29 | Brake test state determining method and device and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110194139B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109344973B (en) * | 2018-08-15 | 2023-02-24 | 广东蓄能发电有限公司 | Method for quickly discriminating asynchronous motion defect of mechanical brake pawl |
| CN110588503B (en) * | 2019-09-27 | 2021-10-26 | 江西博能上饶客车有限公司 | Automobile brake lamp control method and system |
| CN111591217A (en) * | 2020-04-30 | 2020-08-28 | 长城汽车股份有限公司 | Detection method and system of brake lamp switch, controller and brake lamp switch |
| CN112498324B (en) * | 2020-12-07 | 2022-04-05 | 潍柴动力股份有限公司 | Method and device for determining vehicle braking state |
| CN113771825B (en) * | 2021-09-27 | 2022-10-14 | 三一海洋重工有限公司 | Brake protection method and system and vehicle |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7878053B2 (en) * | 2006-12-22 | 2011-02-01 | Gm Global Technology Operations, Inc. | Engine off brake booster leak diagnostic systems and methods |
| CN101791980A (en) * | 2010-02-11 | 2010-08-04 | 中国汽车技术研究中心 | Electric vacuum servo device control strategy of electric car brake |
| CN102837609B (en) * | 2012-09-17 | 2016-05-25 | 三一重工股份有限公司 | Braking accelerator control device and vehicle |
| CN103879397B (en) * | 2012-12-20 | 2016-02-10 | 北汽福田汽车股份有限公司 | The brake switch failure judgment method of vehicle and device |
| CN104280246B (en) * | 2013-07-03 | 2017-04-19 | 上海汽车集团股份有限公司 | Braking lamp switch signal consistency verifying method for hybrid power/pure electric car |
| CN104340200B (en) * | 2013-08-02 | 2016-12-28 | 上海汽车集团股份有限公司 | A kind of diagnostic method of brake pedal position sensor fault |
| CN103921783B (en) * | 2014-04-01 | 2016-06-29 | 中国第一汽车股份有限公司 | Utilize the system and method that brake switch and master cylinder Pressure identification are truly braked |
| CN104842990B (en) * | 2014-10-24 | 2017-09-15 | 北汽福田汽车股份有限公司 | The braking performance test system and method for vehicle |
| CN104986156A (en) * | 2015-06-03 | 2015-10-21 | 安徽江淮汽车股份有限公司 | Brake switch fault diagnosis method and system |
| CN105966382B (en) * | 2016-05-03 | 2019-02-22 | 北京新能源汽车股份有限公司 | The height above sea level evaluation method and device of electric car and its local environment |
| CN106740804A (en) * | 2016-12-26 | 2017-05-31 | 北京汽车研究总院有限公司 | A kind of processing method of brakes, automobile and brake fault |
| CN106945656A (en) * | 2017-02-13 | 2017-07-14 | 奇瑞汽车股份有限公司 | A kind of automobile brake fault diagnosis method for switch |
| CN107458364B (en) * | 2017-07-20 | 2019-11-22 | 北京新能源汽车股份有限公司 | Force aid system for braking control method and device |
| CN109421686B (en) * | 2017-08-23 | 2021-04-16 | 长城汽车股份有限公司 | Brake pedal fault diagnosis method and device |
| CN109435933B (en) * | 2018-10-12 | 2020-07-28 | 安徽江淮汽车集团股份有限公司 | Brake fault control method |
-
2019
- 2019-05-29 CN CN201910456917.5A patent/CN110194139B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN110194139A (en) | 2019-09-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110194139B (en) | Brake test state determining method and device and vehicle | |
| CN110228453B (en) | Parking control method and device for vehicle and vehicle | |
| CN110816508A (en) | Vehicle fault detection method and device, vehicle and storage medium | |
| US9352684B2 (en) | Method and control device for signaling a braking process on a trailer vehicle | |
| KR20170040920A (en) | Control apparatus of electronic parking brake apparatus and control method thereof | |
| CN112477783A (en) | Hydrogenation control method, device and system for vehicle and storage medium | |
| KR102585802B1 (en) | Brake apparatus of autonomous driving vehicle and control method thereof | |
| US10604126B2 (en) | Apparatus for controlling vehicle and control method thereof | |
| CN105752085A (en) | Method and device for obtaining motor vehicle demand torque | |
| CN113805515A (en) | Vehicle remote control method, device, equipment, storage medium and remote control cabin | |
| US20190315321A1 (en) | Vehicle control apparatus and vehicle control method | |
| CN110588503B (en) | Automobile brake lamp control method and system | |
| CN111142504B (en) | Bus detection device and method | |
| CN114954392B (en) | Vehicle braking method, device, electronic equipment and storage medium | |
| CN115123172B (en) | Brake system fault processing method and device, readable storage medium and vehicle | |
| CN114763144A (en) | Vehicle control method and device and vehicle | |
| US20210269005A1 (en) | Method for operating a vehicle brake system, control unit, and vehicle | |
| CN113202646A (en) | Engine overspeed protection control method, device, storage medium and system | |
| CN113199983A (en) | Brake lamp control method and brake-by-wire system | |
| JP2020116993A (en) | Vehicle control device | |
| CN110588543A (en) | Front radar and panoramic camera control device and method | |
| JP7091985B2 (en) | Vehicle control unit | |
| CN113459820B (en) | Method for controlling vehicle start, system thereof, vehicle and medium | |
| US20240042984A1 (en) | Fault detection arrangement for vehicle brake system | |
| CN114778138A (en) | Single pedal function testing method, electronic device and storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |