CN108422986A - A kind of intelligence control system for automobile brake - Google Patents
A kind of intelligence control system for automobile brake Download PDFInfo
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- CN108422986A CN108422986A CN201810438097.2A CN201810438097A CN108422986A CN 108422986 A CN108422986 A CN 108422986A CN 201810438097 A CN201810438097 A CN 201810438097A CN 108422986 A CN108422986 A CN 108422986A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/17—Using electrical or electronic regulation means to control braking
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T2270/00—Further aspects of brake control systems not otherwise provided for
- B60T2270/30—ESP control system
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- Transportation (AREA)
- Mechanical Engineering (AREA)
- Regulating Braking Force (AREA)
Abstract
The present invention relates to a kind of intelligence control systems for automobile brake, including：Signal acquisition module, signal processing module, central controller, arrestment mechanism drive module, at least two groups vacuum braking mechanism and ESP system；The system of the present invention can monitor the motion state of driving vehicle in real time, the vacuum braking mechanism braking strategy to match with automobile current motion state is generated by signal analysis, the system can cooperate with the primary brake system of automobile, auxiliary braking operation is executed by above-mentioned intelligentized control method mechanism, braking distance is significantly decreased, stability and the safety of service brake are effectively improved；Secondly, additionally it is possible to the state of misoperation accelerator pedal is monitored, and control the opening and closing of throttle according to monitoring data, avoid causing the accident because of mis-accelerator pressing；In addition, ESP system is also fused in auxiliary braking system by the present invention, vehicle can be made to keep best stability under various conditions, vehicle is avoided to break away.
Description
Technical field
The present invention relates to automobile brake technical fields, and in particular to a kind of intelligence control system for automobile brake.
Background technology
In recent years, as domestic automobile ownership increases year by year so that traffic safety form is more and more severeer.According to
Studies have shown that in numerous traffic accidents, rear-end impact event accounts for 70% or more of accident toatl proportion, especially public in high speed
The rear-end collision that road is caused is more, causes the loss of personnel and property also more serious.And rear-end collision is mostly because front truck is tight
When anxious braking, caused by causing the rear car run at high speed vehicle can not stop in relatively short distance.
Currently, existing automobile is mounted on ABS system, its purpose is to prevent vehicle from being issued in emergency braking situation
Raw wheel lock up, to ensure the adhesive force of wheel and ground always in maximum value.But ABS system not be it is omnipotent,
It may failure under special environment；Such as：When carrying out emergency braking on ice and snow road, due to rubbing between road surface and tire
It is relatively low to wipe coefficient, causes anti-lock braking system that can not effectively shorten braking distance, or under certain state of emergency, if vehicle
When executing brake operating according to normal brake program, it is more likely that can be more than safe distance, to collide the barrier in front
Hinder object or vehicle.
In order to further increase the validity of automobile brake, Some Enterprises have also developed various auxiliary braking devices, base
Present principles are roughly the same, touched using the friction means being arranged on automobile chassis and ground, to increase automobile and ground
The frictional force in face, so as to shorten braking distance.But since these auxiliary braking devices do not have intelligent control function,
Influence of the size to vehicle driving state that brake force is not considered in executing braking process, causes vehicle excessive because of brake force
And overturn, or can not be checked vehicle in safe distance because brake force is too small, to can still result in the hair of traffic accident
It is raw, bring new security risk to driving.
Secondly, vehicle in case of emergency, when realizing braking using traditional mechanical brake device (parking brake and service brake), by
Larger brake force only is applied to two-wheeled below in it and also will appear rear lock even if being equipped with ABS anti-lock braking systems to produce
Raw vehicle whipping phenomenon, has larger security risk；Its key factor be ABS system itself there are the shortcomings that, it is this lack
Point is that it belongs to the braking system of passive property, can not actively identify potential danger existing for vehicle in advance, often
When driver recognize it is dangerous there are when, it is difficult to avoid the generation of accident.
In addition, the brake pedal due to automobile is adjacent with gas pedal, is operated by same foot, left when to accelerate
Brake pedal, when brake, leave gas pedal, the conversion being conveniently operated.But when dangerous situation occurs suddenly, due to each driver
Psychological quality it is different, driving experience is different, some drivers can be panic when encountering emergency, and should touch on the brake parking
But throttle has accidentally been stepped on, has made to can avoid originally or not serious accident becomes more serious, or even go out highway, vehicle is caused to ruin people
It dies.
It is current art technology in conclusion how to provide a kind of braking intelligent control method ensureing vehicle safety
Personnel's technical problem urgently to be resolved hurrily.
Invention content
It is an object of the present invention to overcome existing auxiliary braking system because not having intelligent control function, to driving
There is above-mentioned security risks, provide a kind of emergency braking control system for automobile, can promptly made using the system
Under dynamic state, by the intellectual analysis to driving states, the braking strategy for meeting current driving security requirement is generated, while right
The case where mis-accelerator pressing, provides risk avoidance measures.
To achieve the above object, a kind of intelligence control system for automobile brake provided by the invention, the system are specific
Including：Signal acquisition module, signal processing module, central controller, arrestment mechanism drive module, at least two groups vacuum braking machine
Structure and ESP system；
The signal acquisition module is used to acquire the driving states signal, braking strength signal and gas pedal power of automobile
Spend signal；
The signal processing module be used for by driving states signal, braking strength signal and gas pedal dynamics signal into
Row processing generates the signal identified for central controller and ESP system；
Whether the central controller is in emergency braking condition according to braking strength signal determining automobile, is being determined as
Under emergency braking condition, vacuum braking mechanism braking strategy is generated by analyzing driving states signal, and trigger arrestment mechanism drive
Dynamic model block by the operation of described vacuum braking mechanism braking strategy driving each group vacuum braking mechanism, the central controller also according to
Gas pedal dynamics signal judges whether automobile in throttle accidentally steps on state, in the case where being determined as that throttle accidentally steps on state, controls throttle
It closes；
The vacuum braking mechanism is set on automobile chassis, which is driven by arrestment mechanism drive module
It is dynamic, so that it is contacted with road surface, and vacuum environment is formed in contact site；
Whether the ESP system is in side slip conditions according to driving states signal and braking strength signal determining automobile,
In the case where being determined as side slip conditions, is analyzed by signal and generate wheel braking strategy, and trigger arrestment mechanism drive module by described
Wheel braking strategy to corresponding wheel implement brake.
As a further improvement of the above technical scheme, the signal acquisition module includes：Distance measuring sensor, test the speed biography
Sensor, braking force sensor, pressure sensor, brake pedal angular acceleration transducer, angle of brake pedal sensor, throttle are stepped on
Plate angle acceleration transducer and accelerator pedal angle sensor are respectively used to measure Chinese herbaceous peony obstacle distance, speed, brake block system
Angular acceleration, the angle of brake pedal, the angular acceleration of gas pedal and the throttle that power, tire pressure, brake pedal rotate
The angle of pedal；The distance measuring sensor and tachogenerator is set to headstock part, braking force sensor setting
In on the brake block of each wheel, the pressure sensor is set on each tire, brake pedal angular acceleration sensing
Device and angle of brake pedal sensor are set on brake pedal, the gas pedal angular acceleration transducer and gas pedal
Angular transducer is set in gas pedal.
As a further improvement of the above technical scheme, the signal processing module includes：A/D converter, signal are put
Big device and filter, the signal for exporting signal acquisition module carry out analog-to-digital conversion, amplify and be filtered successively.
As a further improvement of the above technical scheme, the central controller includes：First comparison module, braking away from
From computing module, the second comparison module, third comparison module and policy generation module；
First comparison module receives the angular acceleration measured value and angle measurement of brake pedal rotation, and respectively
It is compared with the angular acceleration threshold value of setting and angle threshold, when angular acceleration measured value and angle measurement are more than threshold value
When, judgement automobile is in emergency braking condition, and sends emergency braking condition message to braking distance computing module；
By emergency braking condition message trigger, it receives the measurement of brake block brake force to the braking distance computing module
Value and vehicle speed measurement value obtain braking distance value by calculating, and braking distance value are sent to the second comparison module；
The braking distance value of reception is compared by second comparison module with Chinese herbaceous peony obstacle distance measured value, will
Distance difference between the two is sent to policy generation module；
The policy generation module by corresponding to distance difference and each vacuum braking mechanism braking strategy of setting away from
It is compared from range, the vacuum braking mechanism braking strategy of distance range is sent to arrestment mechanism where selecting the distance difference
Drive module, and clock module excitation signal acquisition module according to set time is controlled, which also receives tire
Pressure measuring value controls each group when tire pressure threshold value of the tire pressure measured value less than setting by arrestment mechanism drive module
Vacuum braking mechanism is out of service；
The third comparison module receives the angular acceleration measured value and angle measurement of gas pedal rotation, and respectively
It is compared with the angular acceleration threshold value of setting and angle threshold, when angular acceleration measured value and angle measurement are more than threshold value
When, judgement automobile is in throttle and accidentally steps on state, and sends shutdown signal to throttle, to drive throttle to close.
As a further improvement of the above technical scheme, further include parameter testing module, in the parameter testing module
It is provided with parameter testing model, which receives signal and the policy generation module output of signal processing module output
Vacuum braking mechanism braking strategy, and by model calculation obtain for adjust vacuum braking mechanism braking strategy it is corresponding away from
Regulated value from range.
As a further improvement of the above technical scheme, the system includes four groups of vacuum braking mechanisms, every group of vacuum
Arrestment mechanism includes two vacuum braking units being oppositely arranged, and each group vacuum braking mechanism is parallel to automobile tail.
As a further improvement of the above technical scheme, the vacuum braking unit includes：Hydraulic cylinder, telescopic rod, suction
Disk, vacuum pump and pressure fan；The hydraulic cylinder is fixed on automobile chassis, the signal input part and arrestment mechanism of the hydraulic cylinder
Drive module connects, and is controlled by arrestment mechanism drive module, and the telescopic rod is set between hydraulic cylinder and sucker, this is stretched
Contracting bar is made it extend to road surface direction by Driven by Hydraulic Cylinder so that sucker is fallen on road surface, and sucker inner wall and road surface it
Between form confined space, the signal input part of the vacuum pump and pressure fan is connect with arrestment mechanism drive module, and by
Arrestment mechanism drive module controls, and the vacuum pump and pressure fan divide two-way to be connected to sucker, is respectively used to extract in confined space
Air and to confined space be vented.
A kind of intelligence control system advantage for automobile brake of the present invention is：
The system of the present invention can monitor the motion state of driving vehicle in real time, when judging that vehicle is in a state of emergency,
The driving states signal obtained according to acquisition further determines whether to need to open the vacuum braking mechanism in this system, and is needing
In the case of opening vacuum braking mechanism, the vacuum braking to match with automobile current motion state is generated by signal analysis
Mechanism braking strategy, the system can cooperate with the primary brake system of automobile, be executed by above-mentioned intelligentized control method mechanism
Auxiliary braking operates, and significantly decreases braking distance, effectively improves stability and the safety of service brake；Secondly, also
The state of misoperation accelerator pedal can be monitored, and control the opening and closing of throttle according to monitoring data, avoided because of mis-accelerator pressing
It causes the accident；In addition, ESP system is also fused in auxiliary braking system by the present invention, vehicle can be made in various situations
It is lower to keep best stability, the risk that vehicle breaks away is reduced in the case of ovdersteering or excessive brake.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of intelligence control system for automobile brake provided by the invention；
Fig. 2 is the structural schematic diagram of the signal processing module in the embodiment of the present invention；
Fig. 3 is the structural schematic diagram of the central controller in the embodiment of the present invention；
Fig. 4 is the multi-group vacuum arrestment mechanism riding position schematic diagram in the embodiment of the present invention；
Fig. 5 is the structural schematic diagram of the vacuum braking unit in the embodiment of the present invention.
Reference numeral
1, first group of vacuum braking mechanism, 2, second groups of vacuum braking mechanisms
3,4, the 4th groups of vacuum braking mechanisms of third group vacuum braking mechanism
5, automobile back wheel 6, arrestment mechanism drive module
7, hydraulic cylinder 8, telescopic rod
9, vacuum pump 10, pressure fan
11, sucker
Specific implementation mode
A kind of intelligence control system for automobile brake of the present invention is carried out with reference to the accompanying drawings and examples
It is described in detail.
As shown in Figure 1, a kind of intelligence control system for automobile brake provided by the invention, which specifically includes：
Signal acquisition module, signal processing module, central controller, arrestment mechanism drive module, at least two groups vacuum braking mechanism and
ESP system.
The signal acquisition module is used to acquire the driving states signal, braking strength signal and gas pedal power of automobile
Spend signal；
The signal processing module be used for by driving states signal, braking strength signal and gas pedal dynamics signal into
Row processing generates the signal identified for central controller and ESP system；
Whether the central controller is in emergency braking condition according to braking strength signal determining automobile, is being determined as
Under emergency braking condition, vacuum braking mechanism braking strategy is generated by analyzing driving states signal, and trigger arrestment mechanism drive
Dynamic model block by the operation of described vacuum braking mechanism braking strategy driving each group vacuum braking mechanism, the central controller also according to
Gas pedal dynamics signal judges whether automobile in throttle accidentally steps on state, in the case where being determined as that throttle accidentally steps on state, controls throttle
It closes；
The vacuum braking mechanism is set on automobile chassis, which is driven by arrestment mechanism drive module
It is dynamic, so that it is contacted with road surface, and vacuum environment is formed in contact site；
Whether the ESP system is in side slip conditions according to driving states signal and braking strength signal determining automobile,
In the case where being determined as side slip conditions, is analyzed by signal and generate wheel braking strategy, and trigger arrestment mechanism drive module by described
Wheel braking strategy to corresponding wheel implement brake.
Detect whether vehicle is in emergency braking condition in the process of moving first using above system, when judging at vehicle
When the state of emergency, the driving states signal obtained according to acquisition further determines whether to need to open the vacuum system in this system
Motivation structure, and in the case where needing to open vacuum braking mechanism, generated and automobile current motion state phase by signal analysis
Matched vacuum braking mechanism braking strategy executes auxiliary braking operation with above-mentioned intelligentized control method mechanism, can improve driving
The stability of braking and safety.Simultaneously, additionally it is possible to the state of misoperation accelerator pedal is monitored, and according to monitoring data control
The opening and closing of liquefaction door avoids causing the accident because of mis-accelerator pressing.
In addition, ESP system is also fused in intelligence control system by the present invention, ESP system can make vehicle in various shapes
Best stability is kept under condition, effect is more obvious in the case of ovdersteering or excessive brake.When braking system occurs
When emergency, ESP system acquires the driving states signal and braking strength signal of signal processing module output, by these signals
It is compared with preset data in its memory, when the numerical value that signal prestores beyond memory, that is, judges that vehicle body faces
Close out of control or runaway condition, order arrestment mechanism drive module is by the wheel braking strategy works generated at this time, to protect
Card vehicle body transport condition can meet the intention of driver as possible.The wheel braking strategy refers to：Using different brakings
Method is braked to execute four-wheel hydraulic, realizes quick, urgent, stable deceleration or parking, guarantee personal and property safety.
Intelligence control system based on above structure, the braking strength signal may include that the angle of brake pedal rotation adds
Speed and angle information, the gas pedal dynamics signal may include the angular acceleration and angle information of gas pedal rotation,
The driving states signal may include Chinese herbaceous peony obstacle distance, speed, brake block brake force and tire pressure information.In order to complete
At the acquisition of above- mentioned information, as shown in Figure 1, the signal acquisition module in the present embodiment includes：Distance measuring sensor, test the speed sensing
Device, braking force sensor, pressure sensor, brake pedal angular acceleration transducer, angle of brake pedal sensor, gas pedal
Angular acceleration transducer and accelerator pedal angle sensor are respectively used to measure Chinese herbaceous peony obstacle distance, speed, brake block braking
Angular acceleration, the angle of brake pedal, the angular acceleration of gas pedal and the throttle that power, tire pressure, brake pedal rotate are stepped on
The angle of plate；The distance measuring sensor and tachogenerator is set to headstock part, and the braking force sensor is set to
On the brake block of each wheel, the pressure sensor is set on each tire, the brake pedal angular acceleration transducer
It is set on brake pedal with angle of brake pedal sensor, the gas pedal angular acceleration transducer and gas pedal angle
Degree sensor is set in gas pedal.
As shown in Fig. 2, the signal processing module can be by the A/D converter of setting, the analog signal that is received
Be converted to the digital signal identified for central controller；Meanwhile in order to reduce the noise jamming of signal, improving the detection essence of signal
Degree, the signal processing module may also include signal amplifier and filter, the signal for exporting signal acquisition module
It is amplified and is filtered.
In order to realize the systematic function of above-mentioned vacuum braking mechanism braking strategy, as shown in figure 3, the central controller
It may include：First comparison module, braking distance computing module, the second comparison module, third comparison module and policy generation module.
First comparison module receives the angular acceleration measured value and angle measurement of brake pedal rotation, and respectively
It is compared with the angular acceleration threshold value of setting and angle threshold, when angular acceleration measured value and angle measurement are more than threshold value
When, judgement automobile is in emergency braking condition, and sends emergency braking condition message to braking distance computing module.
By emergency braking condition message trigger, it receives the measurement of brake block brake force to the braking distance computing module
Value and vehicle speed measurement value obtain braking distance value by calculating, and braking distance value are sent to the second comparison module.
The braking distance value of reception is compared by second comparison module with Chinese herbaceous peony obstacle distance measured value, will
Distance difference between the two is sent to policy generation module.
The policy generation module by corresponding to distance difference and each vacuum braking mechanism braking strategy of setting away from
It is compared from range, the vacuum braking mechanism braking strategy of distance range is sent to arrestment mechanism where selecting the distance difference
Drive module, and control clock module excitation signal acquisition module according to set time so that signal acquisition module can be real-time
Detect the transport condition data of automobile.The vacuum braking mechanism braking strategy may include vacuum braking mechanism unlatching group number,
The setting of each group vacuum braking mechanism start-up time and starting duration, suction.
The third comparison module receives the angular acceleration measured value and angle measurement of gas pedal rotation, and respectively
It is compared with the angular acceleration threshold value of setting and angle threshold, when angular acceleration measured value and angle measurement are more than threshold value
When, judgement automobile is in throttle and accidentally steps on state, and sends shutdown signal to throttle, to drive throttle to close.
Fuel, which is controlled, in interior of motor vehicles component, on internal combustion engine is referred to as throttle for the device of amount.Its role is to grasp
Vertical E-Gas throttle opening changes the rotating speed and power of engine, to adapt to automobile to control the flow of combustion mixture
The needs of traveling.E-Gas is exactly by position sensor, and transmission throttle tramples the signal of the depth and speed, to realize oil
The electronic control unit of door function.This signal can be received and understood by vehicle-mounted microcomputer, control instruction then be sent out again, with control
Air throttle quickly or mitigates according to instruction and opens its angle that should open.The present invention is exactly that the above-mentioned control of E-Gas is utilized
Mechanism judges whether driver by gas pedal is mistakenly considered brake pedal according to the transient change amount of gas pedal, and is being determined as
When accidentally stepping on state, throttle out code is sent to EGAS control system immediately, to avoid serious caused by automobile speed-raising
Consequence.
Above-mentioned policy generation module also receives tire pressure measured value, is used for the tire of the tire pressure measured value and setting
Pressure threshold value is compared in real time；When tire pressure threshold value of the tire pressure measured value less than setting, it was demonstrated that the part tire of automobile is grabbed
Soil fertility is insufficient, if still continuing auxiliary braking according to the vacuum braking mechanism braking strategy set before, it is likely that can deposit
In overturning or sideslip risk；In order to avoid the generation of this accident, each group vacuum system can be controlled by arrestment mechanism drive module
Motivation structure is out of service so that the insufficient tire of earth-grasping force is steadily contacted with ground.
With the increase of automobile service life and mileage travelled, the brake parts of automobile primary brake system can constantly be ground
Damage and aging, so as to cause being greatly lowered for stopping power.If braked always using changeless vacuum braking mechanism
Strategy will necessarily reduce the braking effect of this system, result even in the failure of braking to control the operation of vacuum braking mechanism.For
This, is additionally provided with parameter testing module (as shown in Figure 3), is provided in the parameter testing module in the system of the present invention
Parameter testing model, the parameter testing model receive the signal of signal processing module output and the vacuum of policy generation module output
Arrestment mechanism braking strategy, and obtained by model calculation for adjusting the corresponding distance range of vacuum braking mechanism braking strategy
Regulated value.
Driving shape of the above-mentioned parameter debugging module to be fed back after the auxiliary braking strategy and strategy execution that execute every time
State information obtains tuning values by model calculation, is braked to each vacuum braking mechanism set in policy generation module
The corresponding distance range of strategy constantly debugs so that currently performed vacuum braking mechanism braking strategy is worked as with automobile always
Preceding performance matches, to improve the identification capability of system.
As shown in figure 4, the system in the present embodiment may include first group of vacuum braking mechanism, 1, second group of vacuum braking machine
Structure 2, third group vacuum braking mechanism 3 and the 4th group of vacuum braking mechanism 4；Every group of vacuum braking mechanism includes two and sets relatively
The vacuum braking unit set, each group vacuum braking mechanism are parallel to automobile tail.
To realize the braking function of above-mentioned vacuum braking mechanism, as shown in figure 5, the vacuum braking unit in the present embodiment can
Including：Hydraulic cylinder 7, telescopic rod 8, sucker 11, vacuum pump 9 and pressure fan；The hydraulic cylinder 7 is fixed on automobile chassis, should
The signal input part of hydraulic cylinder 7 is connect with arrestment mechanism drive module 6, and is controlled by arrestment mechanism drive module 6, and described stretches
Contracting bar 8 is set between hydraulic cylinder 7 and sucker 11, which is made it extend to road surface direction by the driving of hydraulic cylinder 7 so that
Sucker 11 is fallen on road surface, and confined space, the vacuum pump 9 and pressure fan are formed between 11 inner wall of sucker and road surface
10 signal input part is connect with arrestment mechanism drive module 6, and is controlled by arrestment mechanism drive module 6,9 He of vacuum pump
Pressure fan 10 divides two-way to be connected to sucker 11, be respectively used to extract confined space in air and to confined space be vented, with increase
Pressure that is big or reducing contact surface between sucker 11 and road surface.
Implementing the detailed process that auxiliary braking operates using the intelligence control system of above structure is：
First, when vehicle, which meets emergency, to be needed to brake immediately, driver can step on brake pedal at once, at this time
Transient change can occur for the angular acceleration and angle of brake pedal, can be detected using angular acceleration transducer and work as anterior angle
The variation delta α of acceleration alpha, correspondingly, the angle variable quantity Δ θ of brake pedal can also be detected by angular transducer
Out；Meanwhile it using the instant distance L of vehicle-mounted contactless stadia surveying automobile and front obstacle, being passed using testing the speed
Sensor detects the instantaneous velocity V of vehicle at this time, and brake block brake force F is detected using pressure sensor, finally believes detection gained
Number by signal processing module carry out analog-to-digital conversion after be transmitted to central controller.
Then, angular acceleration change amount Δ α, angle variable quantity Δ θ, distance L, speed V and the brake block converted through signal
Brake force F is stored into central controller.Judge automobile be in emergency braking condition when, further by calculate acquisition braking away from
It is compared with Chinese herbaceous peony obstacle distance measured value from value, later by distance difference and each vacuum braking mechanism system between the two
Distance range corresponding to dynamic strategy is compared；When the distance difference is negative, that is, pass through the braking of automobile itself
System can check vehicle in safe distance, need not start the auxiliary braking system of the present invention at this time, and when described
Distance difference is positive number, and when in a certain distance range of setting, i.e., can not be only by the braking system of automobile itself
Vehicle is checked in safe distance, rear-end collision can be caused, the vacuum braking machine of distance range where selecting the distance difference at this time
Structure braking strategy is as implementation strategy.
In the case where determination needs to open vacuum braking mechanism, in order to ensure the stability of braking, in vacuum braking machine
The first group of vacuum braking mechanism 1 (as shown in Figure 4) for being proximate to automobile back wheel 5 started at first is set in structure braking strategy, and
According to currently performed vacuum braking mechanism braking strategy by setting program further open second group of vacuum braking mechanism 2,
Third group vacuum braking mechanism 3 or the 4th group of vacuum braking mechanism 4.
It is well known that vehicle is under stationary state or normally travel state, the support force of front and back tire keeps one substantially
Cause, once and vehicle has the tendency that overturning forward, the pressure of automobile front tyre can be increasingly greater than the pressure of tire after automobile.In for this purpose,
It is possible in judgement automobile compared with entreating controller that can carry out the tire pressure measured value received in real time with the tire pressure threshold value of setting
When can have overturning or skidding accident, it is out of service that each group vacuum braking mechanism is controlled by arrestment mechanism drive module so that
The insufficient tire of earth-grasping force is steadily contacted with ground, so that automobile is restored to plateau.
In executing above-mentioned auxiliary braking operating process, system of the invention can also be held system by parameter testing module
The driving states information of capable vacuum braking mechanism braking strategy and its feedback substitutes into trained model, is transported by model
The debugging value obtained for debugging vacuum braking mechanism braking strategy parameter is calculated, it is each true to what is set in policy generation module
The corresponding distance range of empty arrestment mechanism braking strategy is constantly debugged so that currently performed vacuum braking mechanism braking strategy
Always match with the current performance of automobile, to improve the identification capability of system.
In addition, this system can also monitor the state of misoperation accelerator pedal in real time, according to the instantaneous of gas pedal
Variable quantity judges whether driver by gas pedal is mistakenly considered brake pedal, and when being determined as accidentally stepping on state, immediately to electronics oil
Accelerator control system sends throttle out code, occurs to avoid the accident caused by automobile speed-raising.
It should be noted last that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting.Although ginseng
It is described the invention in detail according to embodiment, it will be understood by those of ordinary skill in the art that, to the technical side of the present invention
Case is modified or replaced equivalently, and without departure from the spirit and scope of technical solution of the present invention, should all be covered in the present invention
Right in.
Claims (7)
1. a kind of intelligence control system for automobile brake, which is characterized in that including：Signal acquisition module, signal processing mould
Block, central controller, arrestment mechanism drive module, at least two groups vacuum braking mechanism and ESP system；
The signal acquisition module is used to acquire driving states signal, braking strength signal and gas pedal the dynamics letter of automobile
Number；
The signal processing module is used for will be at driving states signal, braking strength signal and gas pedal dynamics signal
Reason generates the signal identified for central controller and ESP system；
Whether the central controller is in emergency braking condition according to braking strength signal determining automobile, is being determined as promptly
Under on-position, vacuum braking mechanism braking strategy is generated by analyzing driving states signal, and trigger arrestment mechanism driving mould
Block is by braking strategy driving each group vacuum braking mechanism of the vacuum braking mechanism operation, and the central controller is also according to throttle
Pedal dynamics signal judges whether automobile in throttle accidentally steps on state, and in the case where being determined as that throttle accidentally steps on state, control throttle is closed；
The vacuum braking mechanism is set on automobile chassis, which is driven by arrestment mechanism drive module,
So that it is contacted with road surface, and vacuum environment is formed in contact site；
Whether the ESP system is in side slip conditions according to driving states signal and braking strength signal determining automobile, is sentencing
It is set under side slip conditions, is analyzed by signal and generate wheel braking strategy, and trigger arrestment mechanism drive module by the vehicle
It takes turns braking strategy corresponding wheel is implemented to brake.
2. the intelligence control system according to claim 1 for automobile brake, which is characterized in that the signal acquisition
Module includes：Distance measuring sensor, tachogenerator, braking force sensor, pressure sensor, brake pedal angular acceleration sensing
Device, angle of brake pedal sensor, gas pedal angular acceleration transducer and accelerator pedal angle sensor, are respectively used to measure
The angle of Chinese herbaceous peony obstacle distance, speed, brake block brake force, tire pressure, the angular acceleration of brake pedal rotation, brake pedal
The angle of degree, the angular acceleration of gas pedal and gas pedal；The distance measuring sensor and tachogenerator is set to headstock
Position, the braking force sensor are set on the brake block of each wheel, and the pressure sensor is set on each tire,
The brake pedal angular acceleration transducer and angle of brake pedal sensor is set on brake pedal, and the throttle is stepped on
Plate angle acceleration transducer and accelerator pedal angle sensor are set in gas pedal.
3. the intelligence control system according to claim 1 or 2 for automobile brake, which is characterized in that the signal
Processing module includes：A/D converter, signal amplifier and filter, for the signal that exports signal acquisition module successively into
Row analog-to-digital conversion is amplified and is filtered.
4. the intelligence control system according to claim 2 for automobile brake, which is characterized in that the center control
Device includes：First comparison module, braking distance computing module, the second comparison module, third comparison module and policy generation module；
First comparison module receives the angular acceleration measured value and angle measurement of brake pedal rotation, and respectively with set
Fixed angular acceleration threshold value and angle threshold is compared, when angular acceleration measured value and angle measurement are more than threshold value,
Judgement automobile is in emergency braking condition, and sends emergency braking condition message to braking distance computing module；
The braking distance computing module by emergency braking condition message trigger its receive brake block brake force measured value and
Vehicle speed measurement value obtains braking distance value by calculating, and braking distance value is sent to the second comparison module；
The braking distance value of reception is compared by second comparison module with Chinese herbaceous peony obstacle distance measured value, by the two
The distance between difference be sent to policy generation module；
Model at a distance from corresponding to each vacuum braking mechanism braking strategy of the policy generation module by distance difference with setting
It encloses and is compared, the vacuum braking mechanism braking strategy of distance range where selecting the distance difference is sent to arrestment mechanism driving
Module, and clock module excitation signal acquisition module according to set time is controlled, which also receives tire pressure
Measured value controls each group vacuum when tire pressure threshold value of the tire pressure measured value less than setting by arrestment mechanism drive module
Arrestment mechanism is out of service；
The third comparison module receives the angular acceleration measured value and angle measurement of gas pedal rotation, and respectively with set
Fixed angular acceleration threshold value and angle threshold is compared, when angular acceleration measured value and angle measurement are more than threshold value,
Judgement automobile is in throttle and accidentally steps on state, and sends shutdown signal to throttle, to drive throttle to close.
5. the intelligence control system according to claim 4 for automobile brake, which is characterized in that further include parameter testing
Module is provided with parameter testing model in the parameter testing module, and it is defeated which receives signal processing module
The vacuum braking mechanism braking strategy of signal and the policy generation module output gone out, and obtained by model calculation for adjusting very
The regulated value of the corresponding distance range of empty arrestment mechanism braking strategy.
6. the intelligence control system according to claim 1 for automobile brake, which is characterized in that the system includes
Four groups of vacuum braking mechanisms, every group of vacuum braking mechanism include two vacuum braking units being oppositely arranged, each group vacuum system
Motivation structure is parallel to automobile tail.
7. the intelligence control system according to claim 6 for automobile brake, which is characterized in that the vacuum braking
Unit includes：Hydraulic cylinder (7), telescopic rod (8), sucker (11), vacuum pump (9) and pressure fan；The hydraulic cylinder (7) is fixed on
On automobile chassis, the signal input part of the hydraulic cylinder (7) is connect with arrestment mechanism drive module (6), and is driven by arrestment mechanism
Module (6) controls, and the telescopic rod (8) is set between hydraulic cylinder (7) and sucker (11), and the telescopic rod (8) is by hydraulic cylinder
(7) driving makes it extend to road surface direction so that sucker (11) is fallen on road surface, and in sucker (11) between inner wall and road surface
The signal input part of formation confined space, the vacuum pump (9) and pressure fan (10) connects with arrestment mechanism drive module (6)
It connecing, and is controlled by arrestment mechanism drive module (6), the vacuum pump (9) and pressure fan (10) divide two-way to be connected to sucker (11), point
The air in confined space Yong Yu not extracted and be vented to confined space.
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| CN201810438097.2A CN108422986A (en) | 2018-05-09 | 2018-05-09 | A kind of intelligence control system for automobile brake |
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| CN201810438097.2A CN108422986A (en) | 2018-05-09 | 2018-05-09 | A kind of intelligence control system for automobile brake |
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| CN108422986A true CN108422986A (en) | 2018-08-21 |
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| CN109532798A (en) * | 2019-01-09 | 2019-03-29 | 谢兴龙 | Automobile brake control system, brake system of car, automobile and automobile brake method |
| CN109664865A (en) * | 2019-01-28 | 2019-04-23 | 青岛黄海学院 | A kind of control of Vehicular intelligent, braking system |
| CN109916551A (en) * | 2019-03-28 | 2019-06-21 | 吉林大学 | A kind of braking quality detection method, device and electronic equipment |
| CN113386742A (en) * | 2021-05-28 | 2021-09-14 | 晋城鸿智纳米光机电研究院有限公司 | Brake auxiliary system, method and automobile |
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