CN104527629A - Automobile vacuum booster automatic emergency braking system - Google Patents
Automobile vacuum booster automatic emergency braking system Download PDFInfo
- Publication number
- CN104527629A CN104527629A CN201410722341.XA CN201410722341A CN104527629A CN 104527629 A CN104527629 A CN 104527629A CN 201410722341 A CN201410722341 A CN 201410722341A CN 104527629 A CN104527629 A CN 104527629A
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- China
- Prior art keywords
- vacuum
- chamber
- automobile
- electronic
- vacuum booster
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- 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
- B60T13/72—Electrical control in fluid-pressure brake systems in vacuum systems or vacuum booster units
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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
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
- B60Q1/44—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating braking action or preparation for braking, e.g. by detection of the foot approaching the brake pedal
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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
- B60T2210/00—Detection or estimation of road or environment conditions; Detection or estimation of road shapes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Regulating Braking Force (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
The invention relates to an automobile vacuum booster automatic emergency braking system. An automobile CAN bus is connected with an electronic control unit; the electronic control unit is connected with a display, a braking tail light, an electronic vacuum booster and a road recognition device respectively; a radar and a camera are respectively connected with the road recognition device; a microswitch, a braking pressure sensor are respectively connected with the electronic vacuum booster. The automobile vacuum booster automatic emergency braking system has the advantages that: the structure is novel and the braking pressure can be established quickly and stably; collision can be quickly and accurately avoided or accident consequence can be quickly and accurately reduced; misoperation of the system can be reduced; vehicles and pedestrians in the road can be distinguished as the system sensor uses prepositive millimeter waves and a video camera to simultaneously detect front road condition information; the system lights the braking tail light beforehand to alert the rear driving vehicles to attention and to prevent rear-end collision by the rear vehicle; while giving a safety alarm, the system intelligently judges the will of the driver, and the system can be randomly quitted without influencing driving experience of the complex road conditions.
Description
Technical field
The invention belongs to brake system of car field, particularly relate to automatically actuated Intelligent control automobile brake system field and vacuum booster field.
Background technology
Along with Domestic Automotive Industry is fast-developing, automobile volume of production and marketing increases fast.Meanwhile, rapid transit Infrastructure also rapid advancement thereupon, causes the negative harm such as car is many, speed fast, Frequent Accidents.Especially automobile longitudinal collision traffic accident is very serious, and a kind of automobile automatic emergency brake system is very necessary.
Under the specific condition of the judgement deficiencies such as unclear at pilot's line of vision, absent minded and burst emergency traffic situation, often to occur taking braking more late or not take to brake and the situation of wrong step on the accelerator.Existing product braking voltage built-up rate is slow, especially autobrake scarce capacity under northern low temperature environment, existing chassis brake system brake-by-wire poor reliability, system can not be made classifying alarm to emergency braking situation and remind chaufeur, and only while braking, light braking taillight, behind vehicle can not be reminded in advance to note, can not effectively prevent from being knocked into the back by front vehicle during emergency braking.
Summary of the invention
Of the present inventionly provide a kind of automobile vacuum booster automatic emergency brake system, to solve existing brake system poor reliability, behind vehicle can not be reminded in advance to note, effectively can not prevent the problem knocked into the back by front vehicle during emergency braking.
Technical scheme of the present invention is: automobile CAN-bus connects electronic control unit, electronic control unit respectively with telltale, brake taillight, electronic vacuum servo-unit, road Identification device be connected, radar, camera are connected with road Identification device respectively, and micro-switch, brake-pressure sensor are connected with electronic vacuum servo-unit respectively.
The structure of described electronic vacuum servo-unit is: front case and rear housing are riveted, there is primary diaphragm front case and rear housing inside successively, centre housing, secondary diaphragm, front case and primary diaphragm surround the first vacuum chamber, primary diaphragm and centre housing surround the first transformation chamber, centre housing and secondary diaphragm surround the second vacuum chamber, secondary diaphragm and rear housing surround the second transformation chamber, there is the first boosting disk primary diaphragm front portion, there is the second boosting disk secondary diaphragm front portion, vacuum adapter is arranged on front case, first vacuum chamber is by pore and the second vacuum chamber UNICOM, first transformation chamber is by air flue and the second transformation chamber UNICOM, first vacuum chamber, first transformation chamber, second vacuum chamber, second transformation chamber is by the vacuum passage UNICOM in valve body, there is reaction plate seat valve body front end, there is master cylinder push rod reaction plate seat front end.
The invention has the advantages that: novel structure, the automobile brake actr of system uses electronic vacuum servo-unit to drive, can be quick, stable set up brake-pressure; The computation speed of System Electronic Control Unit and risk judgment ability, can collision free or reduce damage sequence fast and accurately higher than the speed of response of everyday driver; System is based on alarm, and it is auxiliary for automatically controlling, and can reduce system and occur misoperation situation; System sensor uses preposition millimeter wave and video frequency pick-up head to detect front traffic information simultaneously, can differentiate the vehicle in road and pedestrian; Light braking taillight in advance in system, remind behind vehicle to note, prevent from being knocked into the back by front vehicle; System is sending safety warning simultaneously, and the wish of intelligent decision chaufeur, system of can jumping out at any time does not affect complex road condition driving experience.
Accompanying drawing explanation
Fig. 1 is functional block diagram of the present invention;
Fig. 2 is the structural representation of electronic type vacuum booster of the present invention;
In figure, front case 1, rear housing 2, primary diaphragm 3, secondary diaphragm 4, vacuum chamber 8, second transformation chamber 9, first, centre housing 5, first vacuum chamber 6, first transformation chamber 7, second boosting disk 10, second boosting disk 11, vacuum adapter 12, pore 13, air flue 14, valve body 15, vacuum passage 16, reaction plate seat 17, master cylinder push rod 18; Electronic control unit I, electronic vacuum servo-unit II, radar III, camera IV, braking taillight V, telltale VI, automobile CAN-bus VII, micro-switch VIII, brake-pressure sensor Ⅸ, road Identification device Ⅹ.
Detailed description of the invention
Automobile CAN-bus VII connects electronic control unit I, electronic control unit I respectively with telltale VI, brake taillight V, electronic vacuum servo-unit II, road Identification device Ⅹ be connected, radar III, camera IV are connected with road Identification device Ⅹ respectively, and micro-switch VIII, brake-pressure sensor Ⅸ are connected with electronic vacuum servo-unit II respectively.
The structure of described electronic vacuum servo-unit II is: front case 1 and rear housing 2 are riveted, front case 1 and rear housing 2 inside have primary diaphragm 3 successively, centre housing 5, secondary diaphragm 4, front case 1 and primary diaphragm 3 surround the first vacuum chamber 6, primary diaphragm 3 and centre housing 5 surround the first transformation chamber 7, centre housing 5 and secondary diaphragm 4 surround the second vacuum chamber 8, secondary diaphragm 4 and rear housing 2 surround the second transformation chamber 9, there is the first boosting disk 10 primary diaphragm 3 front portion, there is the second boosting disk 11 secondary diaphragm 4 front portion, vacuum adapter 12 is arranged on front case 1, first vacuum chamber 6 is by pore 13 and the second vacuum chamber 8 UNICOM, first transformation chamber 7 is by air flue 14 and the second transformation chamber 9 UNICOM, first vacuum chamber 6, first transformation chamber 7, second vacuum chamber 8, second transformation chamber 9 is by vacuum passage 16 UNICOM in valve body 15, there is reaction plate seat 17 valve body 15 front end, there is master cylinder push rod 18 reaction plate seat 17 front end.
Front case 1 and rear housing 2 rivet formation containment shell, the rubber diaphragm that can be moved by two in inside, i.e. primary diaphragm 3, secondary diaphragm 4, with a fixing centre housing 5, containment shell is separated into 4 air chambers, be respectively the first vacuum chamber 6, first transformation chamber 7, second vacuum chamber 8 and the second transformation chamber 9, primary diaphragm 3 and secondary diaphragm 4 are supported in its anterior conduct by the first boosting disk 10 and the second boosting disk 11 respectively, front case 1 installs a vacuum adapter 12, first vacuum chamber 6 is connected with the vacuum source of automobile, and the first vacuum chamber 6 and the second vacuum chamber 8 use pore 13 UNICOM, this inside, two chambeies remains vacuum state, first transformation chamber and the second transformation chamber use air flue 14 UNICOM, two cavity pressures keep equal pressure state forever, when not needing vacuum servo, 4 air chambers are by vacuum passage 16 UNICOM in valve body 15, and be all in vacuum state.When needs vacuum servo, close the vacuum passage 16 between two vacuum chambers and two transformation chambeies, be filled with air by two transformation chambeies simultaneously.Utilize with two vacuum chambers between atm difference produces vacuum servo, promote the first boosting disk 10, second boosting disk 12, valve body 15, reaction plate seat 17 combination mechanism together to front case 1 direction motion, by power amplification after be delivered on master cylinder push rod 18.Master cylinder push rod promotes the brake master cylinder piston be connected with electronic vacuum servo-unit, braking liquid in compression brake master cylinder produces hydraulic pressure, and be delivered to wheel drg and brake shoe brake cheek contact with wheel nave or slipper contacts with wheel brake, and then generation friction drag control car retardation or braking.
Automobile vacuum booster automatic emergency brake system of the present invention is controlled by an electronic control unit, according to the radar of road Identification system, the front traffic information of camera detection, the chaufeur of the car status information of automobile CAN-bus and electronic vacuum servo-unit feedback tramples information and brake-pressure information carries out comprehensive analysis and judgement, sends classifying alarm and exports brake-pressure.
The electronic vacuum servo-unit that automobile automatic emergency brake system of the present invention uses, Real-time Collection brake system pressure output signal and chaufeur can trample brake pedal signal, electronic control unit can under the condition not having driver actions, the solenoid-driven brake system work of direct control electronic vacuum servo-unit inside, realizes brake-by-wire function.
Vacuum booster of the present invention can the pro-active intervention braking maneuver of perception chaufeur, valve rod and air valve base rigidity are riveted together, and use stop screw to fix with electromagnetic valve components, electromagnetic valve components is inlayed a micro-switch, when chaufeur is by stepping on brake pedal, can trigger micro-switch and send electric signal, thus the people of perception chaufeur is action.
Road Identification device of the present invention uses radar and camera associated working, radar can be millimeter wave radar or scanning laser radar, for detecting target range, relative velocity, the relative position information in road ahead, as the judgment basis of Systematical control, camera for differentiating appearance profile and the lane mark information of objects ahead, as the judgment basis of Systematical control.
Braking taillight of the present invention is lighted when system alarm simultaneously, reminds front vehicle to note in advance, prevent traffic accidents such as being knocked into the back when Braking system emergency braking.
Telltale of the present invention is used for display system mode of operation, and integral speakers in telltale, can send different shadows and sound prompting during classifying alarm.Telltale is arranged in driving compartment, can cause the position that chaufeur is noted.
Automobile CAN-bus of the present invention is used for collection vehicle status information, and when comprising the wheel speed sensor signal be arranged on wheel etc. for judging system works, whether pro-active intervention controls vehicle to chaufeur.
Automobile automatic emergency brake system of the present invention uses electronic vacuum servo-unit to control vehicle autobrake.System uses and is installed on the procephalic radar sensor of car and is installed on the real-time road in the camera detection vehicle front on front windshield glass and by information transmission to electronic control unit, electronic control unit carries out different operating after calculating according to traffic information and vehicle system information process.When this car may occur to collide with traveling ahead longitudinal direction of car, system sends one-level and reports to the police, and reminds chaufeur to note.If now chaufeur is made and dodged action, system jumps out warning; Do not make when chaufeur and dodge action, and when risk of collision continues to increase, system sends secondary alarm, and control the braking force that vehicle electronics vacuum booster applies to be less than 0.3g deceleration/decel.If now chaufeur is made and dodged action, system jumps out warning.When chaufeur does not still carry out dodging action, and when must collide, Systematical control electronic vacuum servo-unit release maximum braking force, collision free or reduction collision consequence.System send one-level report to the police time, car brakeing taillight sends flash signal simultaneously, reminds rear car to note before car brakeing, and when avoiding emergency braking, front vehicle reaction not in time, causes traffic accident.
Claims (2)
1. an automobile vacuum booster automatic emergency brake system, it is characterized in that: automobile CAN-bus connects electronic control unit, electronic control unit respectively with telltale, brake taillight, electronic vacuum servo-unit, road Identification device be connected, radar, camera are connected with road Identification device respectively, and micro-switch, brake-pressure sensor are connected with electronic vacuum servo-unit respectively.
2. a kind of automobile vacuum booster automatic emergency brake system according to claim 1, it is characterized in that: the structure of described electronic vacuum servo-unit is: front case and rear housing are riveted, there is primary diaphragm front case and rear housing inside successively, centre housing, secondary diaphragm, front case and primary diaphragm surround the first vacuum chamber, primary diaphragm and centre housing surround the first transformation chamber, centre housing and secondary diaphragm surround the second vacuum chamber, secondary diaphragm and rear housing surround the second transformation chamber, there is the first boosting disk primary diaphragm front portion, there is the second boosting disk secondary diaphragm front portion, vacuum adapter is arranged on front case, first vacuum chamber is by pore and the second vacuum chamber UNICOM, first transformation chamber is by air flue and the second transformation chamber UNICOM, first vacuum chamber, first transformation chamber, second vacuum chamber, second transformation chamber is by the vacuum passage UNICOM in valve body, there is reaction plate seat valve body front end, there is master cylinder push rod reaction plate seat front end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410722341.XA CN104527629A (en) | 2014-12-04 | 2014-12-04 | Automobile vacuum booster automatic emergency braking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410722341.XA CN104527629A (en) | 2014-12-04 | 2014-12-04 | Automobile vacuum booster automatic emergency braking system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104527629A true CN104527629A (en) | 2015-04-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410722341.XA Pending CN104527629A (en) | 2014-12-04 | 2014-12-04 | Automobile vacuum booster automatic emergency braking system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104527629A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105059283A (en) * | 2015-09-07 | 2015-11-18 | 王德龙 | Multi-information vehicle emergency braking alarm system |
| CN105539410A (en) * | 2015-12-30 | 2016-05-04 | 吉林东光奥威汽车制动系统有限公司 | Initiative supercharging device for automobile brake system |
| CN110154724A (en) * | 2018-12-29 | 2019-08-23 | 吉林东光奥威汽车制动系统有限公司 | A kind of new-energy automobile kinetic energy switching brake device |
| CN113830046A (en) * | 2021-10-29 | 2021-12-24 | 福州大学 | Efficient braking system based on heavy-duty truck and working method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105059283A (en) * | 2015-09-07 | 2015-11-18 | 王德龙 | Multi-information vehicle emergency braking alarm system |
| CN105539410A (en) * | 2015-12-30 | 2016-05-04 | 吉林东光奥威汽车制动系统有限公司 | Initiative supercharging device for automobile brake system |
| CN105539410B (en) * | 2015-12-30 | 2017-12-26 | 吉林东光奥威汽车制动系统有限公司 | A kind of brake system of car active boost device |
| CN110154724A (en) * | 2018-12-29 | 2019-08-23 | 吉林东光奥威汽车制动系统有限公司 | A kind of new-energy automobile kinetic energy switching brake device |
| CN113830046A (en) * | 2021-10-29 | 2021-12-24 | 福州大学 | Efficient braking system based on heavy-duty truck and working method thereof |
| CN113830046B (en) * | 2021-10-29 | 2022-06-21 | 福州大学 | Efficient braking system based on heavy-duty truck and working method thereof |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150422 |
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| RJ01 | Rejection of invention patent application after publication |