CN109501802A - Active brake system based on Electric booster - Google Patents
Active brake system based on Electric booster Download PDFInfo
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- CN109501802A CN109501802A CN201811411013.2A CN201811411013A CN109501802A CN 109501802 A CN109501802 A CN 109501802A CN 201811411013 A CN201811411013 A CN 201811411013A CN 109501802 A CN109501802 A CN 109501802A
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- 238000001514 detection method Methods 0.000 claims abstract description 47
- 230000004888 barrier function Effects 0.000 claims abstract description 43
- 230000009471 action Effects 0.000 claims description 11
- 238000007514 turning Methods 0.000 claims description 8
- 238000007689 inspection Methods 0.000 claims 1
- 238000002604 ultrasonography Methods 0.000 claims 1
- 230000004044 response Effects 0.000 abstract description 5
- 239000000446 fuel Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 208000019901 Anxiety disease Diseases 0.000 description 1
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000036506 anxiety Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- VIKNJXKGJWUCNN-XGXHKTLJSA-N norethisterone Chemical compound O=C1CC[C@@H]2[C@H]3CC[C@](C)([C@](CC4)(O)C#C)[C@@H]4[C@@H]3CCC2=C1 VIKNJXKGJWUCNN-XGXHKTLJSA-N 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units, or advanced driver assistance systems for ensuring comfort, stability and safety or drive control systems for propelling or retarding the vehicle
- B60W30/08—Active safety systems predicting or avoiding probable or impending collision or attempting to minimise its consequences
- B60W30/09—Taking automatic action to avoid collision, e.g. braking and steering
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q9/00—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling
- B60Q9/008—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling for anti-collision purposes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units, or advanced driver assistance systems for ensuring comfort, stability and safety or drive control systems for propelling or retarding the vehicle
- B60W30/08—Active safety systems predicting or avoiding probable or impending collision or attempting to minimise its consequences
- B60W30/095—Predicting travel path or likelihood of collision
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
- B60W40/10—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to vehicle motion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
- B60W40/10—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to vehicle motion
- B60W40/105—Speed
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- B60W2420/408—
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2420/00—Indexing codes relating to the type of sensors based on the principle of their operation
- B60W2420/54—Audio sensitive means, e.g. ultrasound
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2540/00—Input parameters relating to occupants
- B60W2540/12—Brake pedal position
Abstract
Whether the active brake system based on Electric booster that the invention discloses a kind of, including information acquisition module, the barrier for detecting in vehicle traveling direction are located in safe distance or risk distance；Control module carries out alarm or active brake for judging whether according to the detection information of the information acquisition module；And execution module, alarm or active brake are carried out for the judgement conclusion according to the control module.The present invention has the braking response time short, and the advantages that will not consuming the exceptional space of automobile, and can be suitble to common fuel vehicle and electric vehicle, and the present invention considers the driving habit of driver, has preferable driving experience.
Description
Technical field
The present invention relates to automobile active safety technical field more particularly to a kind of active brake systems based on Electric booster
System.
Background technique
With being continuously increased for automobile quantity, the traffic accident in China is also constantly rising.According to statistics, in road traffic thing
In therefore, rear-ended car accident accounts for about 70% or more, therefore studies a kind of active anti-collision system or active brake system is extremely important.
The active brake system proposed at present has following several: the first is motor and wirerope, drives steel by motor
Cord, then wirerope drives brake pedal, to realize the purpose of active brake, although realizing conveniently, there is braking
Response time is long, needs to occupy vehicle exceptional space, influences the disadvantages of vehicle is beautiful.Second is to stablize journey based on body electronics
The braking system of sequence system (ESP), this scheme although braking response time it is short, system complex, higher cost.Third
Kind is that the active brake of vehicle is realized using driving motor for electric vehicle, although this scheme is not needed to former Che Jinhang
Any change, realization is the simplest, but since brake force cannot reach maximum, and the battery capacity of electric vehicle is greater than a certain
Braking is not will do it when definite value, so that the effect of active brake is not very ideal, and the program can only be on electric vehicle
It realizes, it is impossible to be used in fuel vehicle.
Summary of the invention
The technical issues of the purpose of the present invention is to be referred in solution background technique.
The active brake system based on Electric booster that in order to solve the above technical problem, the present invention provides a kind of, including
Whether information acquisition module, the barrier for detecting in vehicle traveling direction are located in safe distance or risk distance；Control
Module carries out alarm or active brake for judging whether according to the detection information of the information acquisition module；And execution
Module carries out alarm or active brake for the judgement conclusion according to the control module.
Further, the information acquisition module includes headstock millimetre-wave radar, for detecting in vehicle forward direction
Whether barrier is located in safe distance or risk distance；At least one tailstock ultrasonic radar, for detecting in vehicle rollback
Whether there are obstacles in direction, if it exists barrier, further detects whether it is located in risk distance；And velocity sensor,
For detecting the real-time speed of the vehicle；The control module is suitable for calculating the safe distance according to the real-time speed
And risk distance.
Further, the information acquisition module further include: angular transducer, when for detecting the vehicle forward whether
In turn condition；With at least one headstock ultrasonic radar, for detecting, in vehicle forward, simultaneously turn direction whether there is barrier
Hinder object, if it exists barrier, further detects whether it is located in risk distance.
Further, the forward real-time speed that the velocity sensor detection obtains vehicle is the first real-time speed, described
Control module is suitable for calculating the first safe distance and the first risk distance of forward traveling, institute according to first real-time speed
The first safe distance is stated greater than the first risk distance；If the headstock millimetre-wave radar detection obtains vehicle forward direction barrier
The distance between vehicle is less than first safe distance, then the execution module executes actuation of an alarm, if in preset time
Interior driver does not brake, then execution module executes braking maneuver, until the distance between barrier and vehicle are greater than the first peace
Full distance；If the headstock millimetre-wave radar detection obtains the distance between vehicle forward direction barrier and vehicle less than described
First risk distance, then the execution module continuously carries out emergency braking action with maximum deceleration, until detecting driver
Take braking maneuver.
Further, if angular transducer detection obtains real-time angular speed and is greater than default angular speed, it is determined that vehicle
In turn condition；The forward turning real-time speed that the velocity sensor detection obtains vehicle is the second real-time speed, described
Control module is suitable for calculating the second risk distance of forward turn condition according to second real-time speed；If the headstock is super
Sound radar detects vehicle forward turn direction, and there are barriers, then the execution module executes actuation of an alarm, if the vehicle
Head ultrasonic radar detection obtain the distance between vehicle forward turn direction barrier and vehicle be less than it is described second danger away from
From then execution module continuously carries out emergency braking action with maximum deceleration, until detecting that driver takes braking maneuver.
Further, the retrogressing real-time speed that the velocity sensor detection obtains vehicle is third real-time speed, described
Control module is suitable for calculating the third risk distance of fallback state according to the third real-time speed；If the third is fast in real time
When degree is greater than the default back-up speed upper limit, then the execution module executes actuation of an alarm, and executes braking maneuver, until third is real
Shi Sudu is less than the default back-up speed upper limit of performing the operation；If the tailstock ultrasonic radar detection obtains vehicle rollback direction barrier
The distance between vehicle is less than the third risk distance, then execution module continuously carries out emergency braking with maximum deceleration
Movement, until detecting that driver takes braking maneuver.
Further, if detecting, the pressure of brake pedal is greater than preset pressure, it is determined that driver takes braking maneuver.
Further, the execution module includes: buzzer, for executing actuation of an alarm；And Electric booster, for holding
Row braking maneuver.
Further, the headstock ultrasonic radar and tailstock ultrasonic radar are four and uniformly distributed.
Further, if the barrier of vehicle traveling direction is located in the risk distance, and vehicle real-time speed is in
Increase state, then the execution module executes emergency braking action.
The present invention has the braking response time short, will not consume the exceptional space of automobile, and can be suitble to common combustion
The advantages that oily vehicle and electric vehicle, and the present invention considers the driving habit of driver, has preferable driving experience.In addition,
Invention also contemplates that different driving situations, it can be according to different conditions systems such as vehicle forward, vehicle backing and vehicle turnings
Fixed different active safety control strategy, is that travel safety obtains general warranty.
Detailed description of the invention
Fig. 1 is the functional block diagram of one embodiment of the invention.
Control flow chart when Fig. 2 is vehicle forward in one embodiment of the invention.
Fig. 3 is control flow chart when vehicle forward turns and moves backward in one embodiment of the invention.
Specific embodiment
Presently in connection with drawings and examples, the present invention is described in further detail.
As shown in Figure 1-3, the active brake system of the invention based on Electric booster, including information acquisition module, it uses
Whether it is located in safe distance or risk distance in detection in the barrier of vehicle traveling direction；
Control module, for judging whether to carry out alarm according to the detection information of the information acquisition module or actively make
It is dynamic；With
Execution module carries out alarm or active brake for the judgement conclusion according to the control module.
In one embodiment, the information acquisition module includes:
Whether headstock millimetre-wave radar, the barrier for detecting in vehicle forward direction are located at safe distance or risk distance
It is interior；
At least one tailstock ultrasonic radar, for detection, in vehicle rollback direction, whether there are obstacles, if it exists barrier,
Further detect whether it is located in risk distance；With
Velocity sensor, for detecting the real-time speed of the vehicle；
The control module is suitable for calculating the safe distance and risk distance according to the real-time speed.
In one embodiment, the information acquisition module further include:
Whether angular transducer is in turn condition when for detecting the vehicle forward；With
At least one headstock ultrasonic radar, for detection, in vehicle forward, simultaneously whether there are obstacles for turn direction, if it exists
Barrier, further detects whether it is located in risk distance.
In one embodiment, the forward real-time speed that the velocity sensor detection obtains vehicle is first fast in real time
Degree, the control module are suitable for calculating the first safe distance and the first danger of forward traveling according to first real-time speed
Distance, first safe distance are greater than the first risk distance；
If headstock millimetre-wave radar detection obtains the distance between vehicle forward direction barrier and vehicle less than described the
One safe distance, then the execution module executes actuation of an alarm, if driver does not brake within a preset time, execution module
Braking maneuver is executed, until the distance between barrier and vehicle are greater than the first safe distance；
If headstock millimetre-wave radar detection obtains the distance between vehicle forward direction barrier and vehicle less than described the
One risk distance, then the execution module continuously carries out emergency braking action with maximum deceleration, until detecting that driver adopts
Braking maneuver is taken.
In one embodiment, if angular transducer detection obtains real-time angular speed and is greater than default angular speed, really
Determine vehicle and is in turn condition；
The forward turning real-time speed that the velocity sensor detection obtains vehicle is the second real-time speed, and the control module is suitable
In the second risk distance for calculating forward turn condition according to second real-time speed；
If the headstock ultrasonic radar detects vehicle forward turn direction there are barrier, the execution module executes report
Alert movement is less than if headstock ultrasonic radar detection obtains the distance between vehicle forward turn direction barrier and vehicle
Second risk distance, then execution module continuously carries out emergency braking action with maximum deceleration, until detecting driver
Take braking maneuver.
In one embodiment, the retrogressing real-time speed that the velocity sensor detection obtains vehicle is that third is fast in real time
Degree, the control module are suitable for calculating the third risk distance of fallback state according to the third real-time speed；
If the third real-time speed is greater than the default back-up speed upper limit, the execution module executes actuation of an alarm, and holds
Row braking maneuver, until third real-time speed is less than the default back-up speed upper limit of performing the operation；If the tailstock ultrasonic radar detection
It obtains the distance between vehicle rollback direction barrier and vehicle and is less than the third risk distance, then execution module is with maximum
Deceleration continuously carries out emergency braking action, until detecting that driver takes braking maneuver.
In one embodiment, if detecting, the pressure of brake pedal is greater than preset pressure, it is determined that driver takes system
Movement.Electric booster includes the pressure sensor and motor booster being mounted below brake pedal, working principle
Are as follows: the driver that control module is detected according to pressure sensor provides corresponding power-assisted to the pressure control motor of brake pedal,
Enable people easily to step on brake pedal and carries out vehicle braking, meanwhile, if the pressure that pressure sensor detects is greater than in advance
If pressure, that is, judge that driver has actively carried out the braking maneuver for trampling brake pedal.
In one embodiment, the execution module includes:
Buzzer, for executing actuation of an alarm；With
Electric booster, for executing braking maneuver.
In one embodiment, the headstock ultrasonic radar and tailstock ultrasonic radar are four and uniformly distributed.
Ultrasonic radar install 4 be in order to make vehicle front and rear of vehicle there is no blind area, i.e., barrier be in vehicle front with
Any position at rear, radar (other than the blind area existing for the radar itself) can detect barrier.Headstock ultrasonic wave thunder
The vertical installation position reached between 450mm-550mm, tailstock ultrasonic radar right angle setting distance 550mm-650mm it
Between, horizontal mounting distance needs to be determined by the width of vehicle and the detection angle of ultrasonic radar.Ultrasonic radar and milli
Metre wave radar can have certain blind area, i.e., there are maximum distances and most low coverage for the distance of radar detection due to the characteristic of itself
From.Since the maximum distance of ultrasonic radar only has several meters, therefore when high vehicle speeds, it is impossible to meet driving requirements, need
Millimetre-wave radar is detected.But millimetre-wave radar can have at least blind area of 0.5m, i.e., barrier, which is in, is less than 0.5m
Position, millimetre-wave radar is undetectable.And the nearest detection range of ultrasonic radar is 0.2m, some ultrasonic radars are very
Most 0.1m greatly reduces blind area range.Therefore need ultrasonic radar and millimetre-wave radar collective effect.When vehicle forward,
When speed is in 15km/h or less, millimeter wave thunder is used when speed is more than 15Km/h using ultrasonic radar detection barrier
Up to detection barrier.
In one embodiment, if the barrier of vehicle traveling direction is located in the risk distance, and vehicle is fast in real time
Degree is in increase state, then the execution module executes emergency braking action.
Electric booster is for the vacuum booster used on current vehicle.Electric booster is to understand
Certainly vacuum pump power-assisted the problems such as structure is complicated, and occupied space is big, and braking efficiency is low, and energy consumption is high, furthermore Electric booster also has
Have the advantages that light weight, response are fast.Electric booster is only the vacuum servo part instead of former vehicle, for the hydraulic of former vehicle
Brake portion does not make any change.It includes two parts that Electric booster, which has altogether, and wherein Electric booster replaces vacuum
The position of boost pump connects brake pedal by breeches joint.
Braking system equipped with Electric booster includes pedal parts, electric booster braking equipped with pressure force snesor
Device, braking force distribution unit, wheel cylinder, controller (ECU), brake fluid pipeline, the various kinds of sensors for acquiring signal etc..It is made
Dynamic process is pressure signal, brake pedal displacement signal, the brake piping fuel injection pressure signal, speed that ECU passes through acquisition brake pedal
Signal etc. is simultaneously filtered accordingly, and the practical braking intention of driver, and root are gone out further according to respective algorithms comprehensive descision
Implement different power-assisted schemes according to different braking intentions.Electric booster is under the control of ECU power-assisted signal, to brake pedal reality
Power to be supported, the pressure of brake output oil liquid is increased, braking force distribution unit is assigned to four braking minute wheel cylinders for oil liquid is braked,
To complete vehicle braking.
Vehicle launch, controller detection active brake system switch whether open (be the habit in order to meet driver,
Some drivers do not like this equipment), when the switch of active brake is not turned on, Electric booster is unable to active brake, only
Potentially act as common electric booster system.It is opened when active brake switchs, and angular transducer is without very big value ω.It will
The distance S information of millimetre-wave radar detection passes to controller, according to the velocity amplitude v of present speed sensor, calculates safety
Distance S1 and risk distance S2.When the range information S of millimetre-wave radar detection is greater than safe distance S1(S > S1), then active system
Any work is not done.Once the distance S of millimetre-wave radar detection is less than safe distance S1(S < S1), then buzzer starts to report
It is alert, within alarm 1S, if driver actively goes to brake, buzzer stop alarm.If driver does not have the movement of any braking,
Then Electric booster goes to slow down according to current speed v with determining deceleration, until the distance S of millimetre-wave radar detection is big
In safe distance S1, then stop slowing down.If the range information S of millimetre-wave radar detection is less than risk distance S2(S < S2), electricity
Dynamic booster then with maximum deceleration goes that vehicle is made to stop.Wherein emergency braking makes vehicle parking, considers driving for driver
The vehicle of habit and automatic catch is sailed, (car speed of automatic catch is reduced to 0, if not braking always, vehicle can be with lesser idle
Speed movement, and driver does not react, and still can have the danger collided.) therefore in active brake of the invention, emergency braking
Later Electric booster can work always, only could release this state by driver.The method of releasing is: when braking is stepped on
Plate detects certain power, it will be able to release this state.
Reversing for vehicle, it is contemplated that the habit of driver, during reversing, speed generally will not be unusual
Fastly, therefore active brake system only has type of alarm and emergency braking.There is a speed limit v ' when reversing, when reversing
Speed has been more than v ', then active brake system just will call the police, and can be slowed down with certain deceleration, so that speed v is small
In speed limit v ' (v < v '), when reversing, ultrasonic radar can detect whether surrounding can have barrier, and according to speed
The speed v of degree sensor obtains the risk distance S2. of vehicle when ultrasonic radar detects barrier, then by alarm system into
Row is reminded, once the distance S of ultrasonic radar detection is less than risk distance S2(S < S2 of vehicle), then vehicle carries out urgent at once
(Electric booster is slowed down with maximum deceleration, until 0) speed becomes for braking.
For vehicle forward turn, when angular transducer have biggish value, then judge that vehicle is being turned.Equally
The driving habit for considering driver can be turned when turning with a lower speed.Similarly, turning when
Wait, active brake system of the invention only alarm and emergency braking, when detection angles sensor have biggish value, judge vehicle
Whether turning and vehicle be turn left or turn right.According to the direction of turning and the value of velocity sensor, determine
The different risk distance S2 of four, front ultrasonic radar, when ultrasonic radar detects barrier, active brake system is just opened
Begin to alarm, once being less than the dangerous distance of each radar, active brake system begins to emergency braking.
Further, it is contemplated that some drivers are unfamiliar with to vehicle or anxiety, throttle may be stepped on as braking, therefore this is
System also prevents mis-accelerator pressing from judging.The distance S of radar detection is less than safe distance S3, buzzer warning, but velocity pick-up
Device detects that speed is increasing, then may determine that driver fault misstepping on accelerator, and Electric booster carries out emergency braking at this time.
Taking the above-mentioned ideal embodiment according to the present invention as inspiration, through the above description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property range is not limited to the contents of the specification, it is necessary to which the technical scope thereof is determined according to the scope of the claim.
Claims (10)
1. the active brake system based on Electric booster characterized by comprising
Whether information acquisition module, the barrier for detecting in vehicle traveling direction are located in safe distance or risk distance；
Control module, for judging whether to carry out alarm according to the detection information of the information acquisition module or actively make
It is dynamic；With
Execution module carries out alarm or active brake for the judgement conclusion according to the control module.
2. the active brake system according to claim 1 based on Electric booster, which is characterized in that the information collection
Module includes:
Whether headstock millimetre-wave radar, the barrier for detecting in vehicle forward direction are located at safe distance or risk distance
It is interior；
At least one tailstock ultrasonic radar, for detection, in vehicle rollback direction, whether there are obstacles, if it exists barrier,
Further detect whether it is located in risk distance；With
Velocity sensor, for detecting the real-time speed of the vehicle；
The control module is suitable for calculating the safe distance and risk distance according to the real-time speed.
3. the active brake system according to claim 2 based on Electric booster, which is characterized in that the information collection
Module further include:
Whether angular transducer is in turn condition when for detecting the vehicle forward；With
At least one headstock ultrasonic radar, for detection, in vehicle forward, simultaneously whether there are obstacles for turn direction, if it exists
Barrier, further detects whether it is located in risk distance.
4. the active brake system according to claim 2 based on Electric booster, which is characterized in that the velocity pick-up
The forward real-time speed that device detection obtains vehicle is the first real-time speed, and the control module is suitable for according to the described first real-time speed
Degree calculates the first safe distance and the first risk distance of forward traveling, first safe distance be greater than first it is dangerous away from
From；
If headstock millimetre-wave radar detection obtains the distance between vehicle forward direction barrier and vehicle less than described the
One safe distance, then the execution module executes actuation of an alarm, if driver does not brake within a preset time, execution module
Braking maneuver is executed, until the distance between barrier and vehicle are greater than the first safe distance；
If headstock millimetre-wave radar detection obtains the distance between vehicle forward direction barrier and vehicle less than described the
One risk distance, then the execution module continuously carries out emergency braking action with maximum deceleration, until detecting that driver adopts
Braking maneuver is taken.
5. the active brake system according to claim 3 based on Electric booster, which is characterized in that if the angle passes
Sensor detection obtains real-time angular speed and is greater than default angular speed, it is determined that vehicle is in turn condition；
The forward turning real-time speed that the velocity sensor detection obtains vehicle is the second real-time speed, and the control module is suitable
In the second risk distance for calculating forward turn condition according to second real-time speed；
If the headstock ultrasonic radar detects vehicle forward turn direction there are barrier, the execution module executes report
Alert movement is less than if headstock ultrasonic radar detection obtains the distance between vehicle forward turn direction barrier and vehicle
Second risk distance, then execution module continuously carries out emergency braking action with maximum deceleration, until detecting driver
Take braking maneuver.
6. the active brake system according to claim 2 based on Electric booster, which is characterized in that the velocity pick-up
The retrogressing real-time speed that device detection obtains vehicle is third real-time speed, and the control module is suitable for fast in real time according to the third
Degree calculates the third risk distance of fallback state；
If the third real-time speed is greater than the default back-up speed upper limit, the execution module executes actuation of an alarm, and holds
Row braking maneuver, until third real-time speed is less than the default back-up speed upper limit of performing the operation；If the tailstock ultrasonic radar detection
It obtains the distance between vehicle rollback direction barrier and vehicle and is less than the third risk distance, then execution module is with maximum
Deceleration continuously carries out emergency braking action, until detecting that driver takes braking maneuver.
7. according to the described in any item active brake systems based on Electric booster of claim 4-6, which is characterized in that if inspection
The pressure for measuring brake pedal is greater than preset pressure, it is determined that driver takes braking maneuver.
8. the active brake system according to claim 1-6 based on Electric booster, which is characterized in that described
Execution module includes:
Buzzer, for executing actuation of an alarm；With
Electric booster, for executing braking maneuver.
9. the active brake system according to claim 3 based on Electric booster, which is characterized in that the headstock ultrasound
Wave radar and tailstock ultrasonic radar are four and uniformly distributed.
10. the active brake system according to claim 1-6 based on Electric booster, which is characterized in that if
The barrier of vehicle traveling direction is located in the risk distance, and vehicle real-time speed is in increase state, then the execution
Module executes emergency braking action.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811411013.2A CN109501802A (en) | 2018-11-24 | 2018-11-24 | Active brake system based on Electric booster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811411013.2A CN109501802A (en) | 2018-11-24 | 2018-11-24 | Active brake system based on Electric booster |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109501802A true CN109501802A (en) | 2019-03-22 |
Family
ID=65750306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811411013.2A Pending CN109501802A (en) | 2018-11-24 | 2018-11-24 | Active brake system based on Electric booster |
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|---|---|
| CN (1) | CN109501802A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111645616A (en) * | 2020-05-09 | 2020-09-11 | 摩登汽车(盐城)有限公司 | Automobile warning system and method and automobile comprising automobile warning system |
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