CN108248578A - Vehicle active emergency braking system, method and truck - Google Patents
Vehicle active emergency braking system, method and truck Download PDFInfo
- Publication number
- CN108248578A CN108248578A CN201810007561.2A CN201810007561A CN108248578A CN 108248578 A CN108248578 A CN 108248578A CN 201810007561 A CN201810007561 A CN 201810007561A CN 108248578 A CN108248578 A CN 108248578A
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- Prior art keywords
- brake
- vehicle
- distance
- active
- solenoid valve
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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
- B60T7/00—Brake-action initiating means
- B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
- B60T7/22—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger initiated by contact of vehicle, e.g. bumper, with an external object, e.g. another vehicle, or by means of contactless obstacle detectors mounted on the vehicle
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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
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/66—Electrical control in fluid-pressure brake systems
- B60T13/662—Electrical control in fluid-pressure brake systems characterised by specified functions of the control system components
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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
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/66—Electrical control in fluid-pressure brake systems
- B60T13/68—Electrical control in fluid-pressure brake systems by electrically-controlled valves
- B60T13/683—Electrical control in fluid-pressure brake systems by electrically-controlled valves in pneumatic systems or parts thereof
Abstract
An embodiment of the present invention provides a kind of vehicle active emergency braking system, method and trucies, it is related to emergency brake of vehicle technical field, the system include electronic control unit and with the electronic control unit connect respectively apart from monitoring device, equipment for monitoring vehicles, drive the gentle pneumatic brake control device of monitoring device；The electronic control unit calculates forced brake distance according to the distance of vehicle and barrier, car speed, loading capacity and driving information, and judge whether the distance of vehicle and barrier is less than the forced brake distance, and judge whether effectively to operate according to driving information；When above-mentioned distance is less than the forced brake distance, and there is no during effectively operation, electronic control unit control active brake gas circuit starts to carry out active brake.Vehicle active emergency braking system provided in an embodiment of the present invention, method and truck, shorten the reaction time of vehicle active brake system, the security performance for improving emergency braking efficiency, increasing vehicle.
Description
Technical field
The present invention relates to emergency brake of vehicle technical field, more particularly, to a kind of vehicle active emergency braking system, side
Method and truck.
Background technology
AEB (Autonomous Emergency Braking) means automatic emergency brake, and also referred to as pre-impact is safely
System, it can be braked when detecting danger by system helps driver, so as to which the generation of accident be reduced or avoided.Tool
For body, AEB systems are by camera or detections of radar and identification front vehicles, and collision is possible first to use sound in the case that having
Driver is reminded to carry out brake operating Evade collision with warning lamp.If driver's still brakeless operates, system judgement can not be kept away
Exempt from rear-end impact, will automatic braking carry out the degree of reducing collisions.Meanwhile AEB systems further include dynamic brake support, work as driving
When the strength deficiency of member's brake pedal is to avoid upcoming collision, brake force is supplemented for it.
Euro NCAP are had found by the analysis to traffic accident before this, and 90% traffic accident is the note due to driver
Caused by meaning power is not concentrated, and AEB systems then effectively reduce or avoid the generation of accident.Euro NCAP and ANCAP are respectively
European Union and Australian third party's separate vehicle security authority, have been delivered in May, 2015 " in real world rear-end impact
The validity of AEB " research report, as a result shows：AEB technologies can reduce by 38% rear-end impact in real world, and no matter
It is in the case where urban road (speed limit 60km/h) or rural road travel, effect has no marked difference.
At present, AEB technologies are mainly used in the brake fluid system of car, for Pneumatic braking system as truck,
The adaptable AEB systems country is also among exploitation is explored therewith.Compared to general car, truck have load-bearing is big, barycenter is high,
The features such as wheelbase is shorter, this so that the safety coefficient of truck is relatively low, if brake is not in time, truck accident occurs and will bring to compare sedan-chair
The economy of vehicle accident bigger and personal damage.Instantly, truck has had many brake assist system, such as manual cooling system, electricity
Eddy current retarder, Retarder, exhaust brake etc., still, current truck still remain active brake system reaction time it is long,
The problem of emergency braking efficiency is inadequate.
Invention content
In view of this, the purpose of the present invention is to provide a kind of vehicle active emergency braking system, method and truck, with contracting
The reaction time of short vehicle active brake system improves emergency braking efficiency, so as to increase the safety coefficient of vehicle, reduces vehicle
Traffic accident probability of happening and its loss of generation.
In a first aspect, an embodiment of the present invention provides a kind of vehicle active emergency braking system, including：Electronic control dress
Put and with the electronic control unit connect respectively apart from monitoring device, equipment for monitoring vehicles, drive monitoring device and pneumatic
Brake control；This for real-time collection vehicle and the distance of front obstacle, and the distance is sent apart from monitoring device
To the electronic control unit；The equipment for monitoring vehicles, for acquiring the speed of the vehicle and loading capacity in real time, and by the speed and
The loading capacity is sent to the electronic control unit；The driving monitoring device, for acquiring the driving information of the vehicle in real time, and will
The driving information is sent to the electronic control unit；The pneumatic braking system includes operation braking gas circuit and active brake gas circuit；
The electronic control unit, for calculating forced brake distance according to above-mentioned distance, speed, loading capacity and driving information, in judgement
State whether distance is less than forced brake distance and judges whether effectively to operate according to driving information；Above-mentioned effective operation
Including braking or turning to；When the distance is less than forced brake distance, and effectively operation is not present, above-mentioned electronic control unit control
The active brake gas circuit is made to start to carry out active brake.
With reference to first aspect, an embodiment of the present invention provides the first possible embodiment of first aspect, wherein, it should
Active brake gas circuit includes the first solenoid valve block and the first air flue, and the first air flue is connect respectively with gas receiver and brake chamber；It should
Operation braking gas circuit includes second solenoid valve group and the second air flue, and the second air flue connects respectively with above-mentioned gas receiver and brake chamber
It connects；First solenoid valve block and the second solenoid valve group are connect respectively with above-mentioned electronic control unit.
The possible embodiment of with reference to first aspect the first, an embodiment of the present invention provides second of first aspect
Possible embodiment, wherein, above-mentioned first solenoid valve block is normally close valve, and above-mentioned second solenoid valve group is normally open valve.
The possible embodiment of with reference to first aspect the first, an embodiment of the present invention provides the third of first aspect
Possible embodiment, wherein, when the active brake gas circuit starts, above-mentioned second solenoid valve group is closed and the first solenoid valve block
It opens.
The possible embodiment of with reference to first aspect the first, an embodiment of the present invention provides the 4th kind of first aspect
Possible embodiment, wherein, above-mentioned first solenoid valve block includes multiple solenoid valves, and above-mentioned second solenoid valve group includes multiple electricity
Magnet valve.
With reference to first aspect, an embodiment of the present invention provides the 5th kind of possible embodiment of first aspect, wherein, it should
Electronic control unit is additionally operable to calculate safe distance and warning distance according to above-mentioned distance, speed, loading capacity and driving information.
With reference to first aspect, an embodiment of the present invention provides the 6th kind of possible embodiment of first aspect, wherein, it should
Vehicle active emergency braking system further includes alarm device；It is above-mentioned to be taken the photograph apart from monitoring unit device including millimetre-wave radar and high definition
As head；Above-mentioned vehicle monitoring cell arrangement includes GPS, wheel speed sensors and load-carrying pressure sensor；Above-mentioned driving monitoring unit
Device includes：Steering wheel angle sensor, brake pedal sensor and accelerator pedal sensor.
Second aspect, the embodiment of the present invention also provides a kind of vehicle active emergency braking method, applied to including pneumatically making
The vehicle of dynamic device, the pneumatic braking system include operation braking gas circuit and active brake gas circuit；This method includes：Obtain vehicle
The speed of distance, vehicle and the driving information of vehicle with front obstacle；It is calculated according to above-mentioned distance, speed and driving information
Forced brake distance；Judge whether the distance is less than forced brake distance；If so, judge whether to deposit according to above-mentioned driving information
Effectively operating；When there is no during effective operation, control active brake gas circuit starts to carry out active brake.
With reference to second aspect, an embodiment of the present invention provides the first possible embodiment of second aspect, wherein, it should
Active brake gas circuit includes the first solenoid valve block and the first air flue, and above-mentioned first air flue connects respectively with gas receiver and brake chamber
It connects, which is normally close valve；Above-mentioned control active brake gas circuit starts to include the step of carrying out active brake：Control
It makes above-mentioned first solenoid valve block to open, active brake is carried out to start active brake gas circuit.
The third aspect, the embodiment of the present invention additionally provide a kind of truck, including truck main body and above-mentioned first aspect and
The truck active emergency braking system that one of its possible embodiment provides.
The embodiment of the present invention brings following advantageous effect：
Vehicle active emergency braking system provided in an embodiment of the present invention, method and truck, the vehicle active emergency braking
System include electronic control unit and with the electronic control unit connect respectively apart from monitoring device, equipment for monitoring vehicles,
Drive the gentle pneumatic brake control device of monitoring device；This apart from the real-time collection vehicle of monitoring device and the distance of front obstacle,
And the distance is sent to electronic control unit；The equipment for monitoring vehicles acquires the speed and loading capacity of the vehicle in real time, and will
Speed and loading capacity are sent to above-mentioned electronic control unit；The driving monitoring device acquires the driving information of the vehicle in real time, and
Driving information is sent to above-mentioned electronic control unit；The pneumatic braking system includes operation braking gas circuit and active brake gas
Road；The electronic control unit calculates forced brake distance according to above-mentioned distance, speed, loading capacity and driving information, and judging should be away from
From whether being less than with a distance from forced brake and according to driving information judge whether effectively to operate；Above-mentioned effective operation includes system
Dynamic or steering；When the distance is less than forced brake distance, and there is no during effectively operation, electronic control unit controls above-mentioned active
Braking gas circuit starts to carry out active brake；It effectively shortens the reaction time of vehicle active brake system, improve urgent system
Dynamic efficiency so as to increase the safety coefficient of vehicle, reduces the loss of vehicle traffic accident probability of happening and its generation.
Other feature and advantage of the disclosure will illustrate in the following description, alternatively, Partial Feature and advantage can be with
Deduce from specification or unambiguously determine or by implement the disclosure above-mentioned technology it can be learnt that.
For the above-mentioned purpose of the disclosure, feature and advantage is enable to be clearer and more comprehensible, preferred embodiment cited below particularly, and coordinate
Appended attached drawing, is described in detail below.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution of the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in being described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is a kind of vehicle active emergency braking system structure diagram provided in an embodiment of the present invention；
Fig. 2 brakes air-channel system structure diagram for a kind of truck chassis provided in an embodiment of the present invention；
Fig. 3 is that gas circuit air pressure when a kind of truck chassis provided in an embodiment of the present invention brakes air-channel system normal work is shown
It is intended to；
Fig. 4 is gas circuit gas when a kind of truck chassis provided in an embodiment of the present invention brakes air-channel system active emergency braking
Press schematic diagram；
Fig. 5 is another vehicle active emergency braking system structure diagram provided in an embodiment of the present invention；
Fig. 6 is a kind of vehicle active emergency braking method flow schematic diagram provided in an embodiment of the present invention.
Icon：
100- electronic control units；110- is apart from monitoring device；120- equipment for monitoring vehicles；130- drives monitoring device；
140- aerobraking control devices；501- warning devices；502- millimetre-wave radars；503- high-definition cameras；504-GPS；505-
Wheel speed sensors；506- load-carrying pressure sensors；507- steering wheel angle sensors；508- brake pedal sensors；509- oil
Door pedal sensor；The first solenoid valve blocks of 510-；511- second solenoid valve groups.
Specific embodiment
Purpose, technical scheme and advantage to make the embodiment of the present invention are clearer, below in conjunction with attached drawing to the present invention
Technical solution be clearly and completely described, it is clear that described embodiment be part of the embodiment of the present invention rather than
Whole embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Lower all other embodiments obtained, shall fall within the protection scope of the present invention.
At present, AEB (Autonomous Emergency Braking) automatic emergency brake technology is mainly used in car
Brake fluid system, for Pneumatic braking system as truck, the adaptable AEB systems country is also developed exploring therewith
Among.Compared to general car, truck has the characteristics that load-bearing is big, barycenter is high, wheelbase is shorter, this causes the safety coefficient of truck
Relatively low, if brake is not in time, accident, which occurs, in truck will bring economy and personal damage than car accident bigger.Although truck
There are many brake assist system, such as manual cooling system, current vortex retarder, Retarder, exhaust brake, but
It is that current truck still remains the problem of active brake system reaction time is long, emergency braking efficiency is inadequate.Based on this, this hair
A kind of vehicle active emergency braking system, method and the truck that bright embodiment provides, can effectively shorten vehicle active brake system
The reaction time of system improves emergency braking efficiency, so as to increase the safety coefficient of vehicle, reduces vehicle traffic accident probability of happening
And its loss generated.
It is actively urgent to a kind of vehicle disclosed in the embodiment of the present invention first to make for ease of understanding the present embodiment
Dynamic system describes in detail.
Embodiment 1
Normal conditions, the operating mode of automatic emergency brake system AEB (Autonomous Emergency Braking)
It is：Vehicle front is being detected it is possible that when there is risk of collision, is passing through the side such as sound, image, vibration seat, jitter direction disk
Formula sends out early warning to driver, and driver is reminded to take measures Evade collision；With the rising of degree of danger, if driver does not have
Have and make correct response to caution signal in time, system will start to carry out automatic braking with certain brake force, reduce speed
While remind driver；When risk of collision becomes very urgent or collision can not avoid, system passes through automatic system completely
Move the degree for carrying out reducing collisions.AEB systems are applied generally in the car with brake fluid system, but are using aerobraking
The development stage is still in the vehicle of system.
An embodiment of the present invention provides a kind of vehicle active emergency braking system, applied to the vehicle including Pneumatic braking system
In, as shown in Figure 1, for vehicle active emergency braking system structure diagram provided in an embodiment of the present invention, as seen from Figure 1,
The vehicle active emergency braking system include electronic control unit 100 and with the electronic control unit 100 connect respectively away from
From monitoring device 110, equipment for monitoring vehicles 120, drive 130 gentle pneumatic brake control device 140 of monitoring device.
Wherein, it is above-mentioned apart from monitoring device 110, for real-time collection vehicle and the distance of front obstacle, and should be away from
From being sent to electronic control unit 100.Above-mentioned equipment for monitoring vehicles 120, for the speed and loading capacity of real-time collection vehicle, and
The speed and loading capacity are sent to above-mentioned electronic control unit 100.Above-mentioned driving monitoring device 130, for acquiring this in real time
The driving information of vehicle, and driving information is sent to above-mentioned electronic control unit 100.
Above-mentioned pneumatic braking system includes operation braking gas circuit and active brake gas circuit.Wherein, active brake gas circuit packet
Including the first solenoid valve block and the first air flue, operation braking gas circuit includes second solenoid valve group and the second air flue, above-mentioned first air flue,
Second air flue is respectively connect with gas receiver and brake chamber.In addition, the first solenoid valve block and second solenoid valve group respectively with electricity
Sub- control device 100 connects, and receives the action for performing and opening or closing from the order of electronic control unit 100.First electromagnetism
Valve group and second solenoid valve group include multiple solenoid valves, also, the first solenoid valve block is all normally close valve, and second solenoid valve group is all
For normally open valve.
Above-mentioned electronic control unit 100 is used for according to the distance of vehicle and front obstacle, the speed of vehicle, vehicle
Loading capacity and driving information calculate safe distance, warning distance and forced brake distance, and judge vehicle and front obstacle
Distance whether be less than the forced brake distance, moreover, judging whether effectively to operate according to driving information.Here, effectively
Operation includes braking or turn to.When the distance of vehicle and front obstacle is less than above-mentioned forced brake distance, and there is no effective
During operation, electronic control unit 100 controls above-mentioned active brake gas circuit to start to carry out active brake, avoids or reduces vehicle and touches
Hit the loss brought.
In wherein a kind of embodiment, as shown in Fig. 2, braking gas for a kind of truck chassis provided in an embodiment of the present invention
Road system structure diagram, which is ten wheel trucies, from Figure 2 it can be seen that the air-channel system includes：Engine, air compressor,
Air dryer, gas receiver, purge tank, spring brake chamber, solenoid valve, quick release valve, relay, four-circuit protection valve, two-chamber system
Dynamic device and threeway.Wherein, the function of air compressor is to generate compressed air, is the power source of the braking system.It is air-dried
The function of device is moisture, machine oil and impurity in filtering compressed air, reduces corrosion of piping, improves braking system safety.Four
The function of road protection valve is the isolation ensured between gas receiver, after wet type gas receiver, in the process of moving, four-circuit protection valve
During any circuit damage gas leakage connected, the pressure in other circuits drops under safe pressure first, does not then fail
Circuit in pressure return on safe pressure.Quick release valve is arranged in braking gas circuit at the brake chamber of front-wheel,
Function is that compressed air when ensureing to release braking in spring air chamber is directly quickly discharged into air.Solenoid valve is for controlling gas
Automatic foundamental element, from above-mentioned electronic control unit 100 receive order perform open or close action, realize gas
Break-make.Relay can improve the movement speed in pneumatic implementation procedure.Spring brake chamber is mounted on the drive axle of truck
On, effect is to provide braking moment for truck.Two-chamber brake is connected with the brake pedal of truck, when brake pedal is stepped on or is released
When putting, realize the break-make to gas circuit and then control the brake of vehicle or release brake.
In fig. 2, the first solenoid valve block includes solenoid valve F1 and solenoid valve R1, is all normally close valve；Second solenoid valve group packet
Solenoid valve F2 and solenoid valve R2 are included, is all normally open valve.In the case where truck is in normally travel state, solenoid valve F2 and solenoid valve R2 are normal
It opens, solenoid valve F1 and solenoid valve R1 are normally closed.When truck is in driving and when driver does not trample brake pedal, two-chamber brake is not
It opens, as shown in figure 3, wherein, gas is stored in gas receiver, six spring brake chambers all do not connect for gas circuit air pressure at this time
Receive braking pressure.When driver is manually braked, during brake pedal, two-chamber brake is opened, and gas will be filled with entirely
Gas circuit including six spring brake chambers, and then realizes brake.
In the case that when truck, an emergency situation is encountered, and driver does not adopt an effective measure, electronic control unit 100 is sent
It orders to four solenoid valves, closes solenoid valve F2 and solenoid valve R2 normally open valves, solenoid valve F1 and solenoid valve R1 normally close valves are then beaten
It opens, and then realizes active brake.It is illustrated in figure 4 a kind of truck chassis braking air-channel system provided in an embodiment of the present invention actively
Gas circuit air pressure schematic diagram during emergency braking, from fig. 4, it can be seen that after solenoid valve F1 and solenoid valve R1 is opened, gas is full of six
Brake chamber realizes skidding.
Another vehicle active emergency braking system structure diagram provided in an embodiment of the present invention is illustrated in figure 5, by
Fig. 5 is as it can be seen that the vehicle active emergency braking system includes：Electronic control unit 100 is connected with the electronic control unit 100
The first solenoid valve block 510 and second solenoid valve group 511, from the electronic control unit 100 draw CAN bus and with this
Warning device 501 that CAN bus connects respectively, millimetre-wave radar 502, high-definition camera 503, GPS504, wheel speed sensors
505th, load-carrying pressure sensor 506, steering wheel angle sensor 507, brake pedal sensor 508 and accelerator pedal sensor
509.Wherein, the above-mentioned device being connected with CAN bus is communicated by CAN bus with electronic control unit 100, and information is sent out
The electronic control unit 100 is given, and receives and orders from the electronic control unit 100, performs corresponding operation.In addition, the electricity
The also external 24 volts of operating voltages of sub- control device 100.
In the embodiment illustrated in figure 5, which can pass through voice, image either driver's seat
It shakes to give driver's alarm.For example, in wherein a kind of embodiment, when vehicle is in warning distance, vehicle flicker police
Accuse lamp and simultaneously send out prompt tone, with the warning of shortening again of distance send out it is more rapid.
Above-mentioned millimetre-wave radar 502 is the radar for being operated in millimeter wave band detection, has small, light weight and space
The characteristics of high resolution；Compared with the optical seekers such as infrared, laser, TV, millimeter-wave seeker penetrating fog, cigarette, dust
Ability is strong, has the characteristics that round-the-clock (except the big rainy day) round-the-clock；In addition, anti-interference, the anti-stealthy energy of millimeter-wave seeker
Power is also superior to other microwave target seekers；Millimetre-wave radar 502 has imaging capability, can differentiate the target of identification very little, Er Qieneng
Identify multiple targets simultaneously.In practical operation, ranging is mainly completed by millimetre-wave radar 502, and high-definition camera 503 plays auxiliary
The effect of supplement.For example, when vehicle traveling needs lane change, high-definition camera 503 can monitor vehicle both sides and rear
Vehicle ensures the safety of traveling.
Vehicle active emergency braking system provided in an embodiment of the present invention, by electronic control unit according to vehicle and obstacle
Distance, car speed, vehicle capacity and the driving information of object calculate forced brake distance, judge whether the distance is less than and force
Braking distance, and judge whether effectively to operate according to driving information；When the distance is less than forced brake distance, and be not present
When effectively operating, electronic control unit controls above-mentioned active brake gas circuit to start to carry out active brake；So as to effectively shorten
The reaction time of vehicle active brake system improves emergency braking efficiency, so as to increase the safety coefficient of vehicle, reduces vehicle
Traffic accident probability of happening and its loss of generation.
Embodiment 2
The embodiment of the present invention additionally provides a kind of vehicle active emergency braking method, applied to including pneumatic braking system
Vehicle, the pneumatic braking system include operation braking gas circuit and active brake gas circuit.Wherein, above-mentioned active brake gas circuit includes the
One solenoid valve block and the first air flue, the first air flue are connect respectively with gas receiver and brake chamber, and the first solenoid valve block is normally close valve.
As shown in fig. 6, for a kind of vehicle active emergency braking method flow schematic diagram provided in an embodiment of the present invention, it as seen from Figure 6, should
The step of vehicle active emergency braking method, includes：
Step S601：Obtain vehicle and the driving information of the distance of front obstacle, the speed of the vehicle and the vehicle.
Step S602：Forced brake distance is calculated according to above-mentioned distance, speed and driving information.
Step S603：Judge whether the distance is less than above-mentioned forced brake distance.
Step S604：If so, it judges whether effectively to operate according to above-mentioned driving information.
Step S605：When there is no during effective operation, control active brake gas circuit starts to carry out active brake.
It is apparent to those skilled in the art that for convenience and simplicity of description, the method for foregoing description
Specific work process, can refer to aforementioned system embodiment in corresponding process, details are not described herein.
Embodiment 3
The embodiment of the present invention additionally provides a kind of truck, which includes truck main body and above-described embodiment 1 and its can
The truck active emergency braking system that one of embodiment of energy provides.
Truck provided in an embodiment of the present invention has identical with the vehicle active emergency braking system that above-described embodiment provides
Technical characteristic, so can also solve the technical issues of identical, reach identical technique effect.
In addition, in the description of the embodiment of the present invention unless specifically defined or limited otherwise, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or be integrally connected；It can
To be mechanical connection or be electrically connected；It can be directly connected, can also be indirectly connected by intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
In the description of the present invention, it should be noted that term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instructions such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, merely to
Convenient for the description present invention and simplify description rather than instruction or imply signified device or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is only used for description purpose, and it is not intended that instruction or hint relative importance.
Finally it should be noted that：Embodiment described above, only specific embodiment of the invention, to illustrate the present invention
Technical solution, rather than its limitations, protection scope of the present invention is not limited thereto, although with reference to the foregoing embodiments to this hair
It is bright to be described in detail, it will be understood by those of ordinary skill in the art that：Any one skilled in the art
In the technical scope disclosed by the present invention, it can still modify to the technical solution recorded in previous embodiment or can be light
It is readily conceivable that variation or equivalent replacement is carried out to which part technical characteristic；And these modifications, variation or replacement, do not make
The essence of corresponding technical solution is detached from the spirit and scope of technical solution of the embodiment of the present invention, should all cover the protection in the present invention
Within the scope of.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (10)
1. a kind of vehicle active emergency braking system, which is characterized in that including：Electronic control unit and with the electronics control
Device processed connect respectively apart from monitoring device, equipment for monitoring vehicles, drive the gentle pneumatic brake control device of monitoring device；
It is described apart from monitoring device, for real-time collection vehicle and the distance of front obstacle, and the distance is sent to institute
State electronic control unit；
The equipment for monitoring vehicles, for acquiring the speed of the vehicle and loading capacity in real time, and by the speed and the load
Weight is sent to the electronic control unit；
The driving information for acquiring the driving information of the vehicle in real time, and is sent to institute by the driving monitoring device
State electronic control unit；
The pneumatic braking system includes operation braking gas circuit and active brake gas circuit；
The electronic control unit is strong for being calculated according to the distance, the speed, the loading capacity and the driving information
Braking distance processed, judges whether the distance is less than forced brake distance and judges whether to deposit according to the driving information
Effectively operating；Effective operation includes braking or turn to；
When the distance is less than the forced brake distance, and there is no during effectively operation, the electronic control unit controls institute
Active brake gas circuit is stated to start to carry out active brake.
2. vehicle active emergency braking system according to claim 1, which is characterized in that
The active brake gas circuit include the first solenoid valve block and the first air flue, first air flue respectively with gas receiver and braking
Gas chamber connects；
It is described operation braking gas circuit include second solenoid valve group and the second air flue, second air flue respectively with the gas receiver and
The brake chamber connection；
First solenoid valve block and the second solenoid valve group are connect respectively with the electronic control unit.
3. vehicle active emergency braking system according to claim 2, which is characterized in that first solenoid valve block is normal
Valve closing, the second solenoid valve group are normally open valve.
4. vehicle active emergency braking system according to claim 2, which is characterized in that when the active brake gas circuit opens
When dynamic, the second solenoid valve group is closed and first solenoid valve block is opened.
5. vehicle active emergency braking system according to claim 2, which is characterized in that first solenoid valve block includes
Multiple solenoid valves, the second solenoid valve group include multiple solenoid valves.
6. vehicle active emergency braking system according to claim 1, which is characterized in that the electronic control unit, also
For calculating safe distance and warning distance according to the distance, the speed, the loading capacity and the driving information.
7. vehicle active emergency braking system according to claim 1, which is characterized in that further include alarm device；It is described
Include millimetre-wave radar and high-definition camera apart from monitoring unit device；
The vehicle monitoring cell arrangement includes GPS, wheel speed sensors and load-carrying pressure sensor；
The driving monitoring unit device includes：Steering wheel angle sensor, brake pedal sensor and accelerator pedal sensor.
A kind of 8. vehicle active emergency braking method, which is characterized in that applied to the vehicle including pneumatic braking system, the gas
Dynamic brake apparatus includes operation braking gas circuit and active brake gas circuit；The method includes：
Obtain the distance of vehicle and front obstacle, the speed of the vehicle, the vehicle driving information；
Forced brake distance is calculated according to the distance, the speed and the driving information；
Judge whether the distance is less than the forced brake distance；
If so, it judges whether effectively to operate according to the driving information；
When there is no during effective operation, control active brake gas circuit starts to carry out active brake.
9. according to the method described in claim 8, it is characterized in that, the active brake gas circuit includes the first solenoid valve block and the
One air flue, first air flue are connect respectively with gas receiver and brake chamber, and first solenoid valve block is normally close valve；
The step of control active brake gas circuit is started to carry out active brake, including：
First solenoid valve block is controlled to open, active brake is carried out to start active brake gas circuit.
10. a kind of truck, which is characterized in that actively tight including truck main body and claim 1-7 any one of them truck
Anxious braking system.
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| CN201810007561.2A CN108248578A (en) | 2018-01-04 | 2018-01-04 | Vehicle active emergency braking system, method and truck |
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