CN1224541C - Active device for preventing automobile wear end collision - Google Patents
Active device for preventing automobile wear end collision Download PDFInfo
- Publication number
- CN1224541C CN1224541C CN 03115900 CN03115900A CN1224541C CN 1224541 C CN1224541 C CN 1224541C CN 03115900 CN03115900 CN 03115900 CN 03115900 A CN03115900 A CN 03115900A CN 1224541 C CN1224541 C CN 1224541C
- Authority
- CN
- China
- Prior art keywords
- oil
- valve
- brake
- speed
- vehicle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The present invention relates to an active anticollision device for prevention the rear collision of automobiles. The device comprises a vehicle Doppler speed-measuring and distance-measuring radar, an electronic arithmetic circuit, a display screen and a brake actuating mechanism, wherein the brake actuating mechanism is connected in series with an integrated valve block on an original brake oil (gas) passage, a direct current motor is arranged for controlling and a driving an oil pump, an inlet of the oil pump is connected with an oil tank of a central braking pump and an oil return port of a high-speed digital valve simultaneously, an outlet is connected with an energy accumulator, a pressure relay and an oil inlet of the high-speed digital valve through a one-way valve, the high-speed digital valve is connected with a liquid control reversing valve, and an outlet of the liquid control reversing valve is connected with an oil cylinder of a wheel brake and an oil reservoir of the central braking pump through the one-way valve. The present invention monitors the vehicle speed and of front vehicles and distance between two vehicles by the vehicle Doppler speed-measuring and distance-measuring radar, and data is transmitted to the electronic arithmetic circuit for calculation and judgment. When distance between two vehicles is two short or two vehicles are to be crashed, alarms are sent out in time, and vehicles are braked by drivers, or vehicle braking is automatically realized by the brake actuating mechanism.
Description
Technical field
The present invention relates to initiatively anticollision device of a kind of rear-end collision, belong to the Electromechanical Control technical scope.
Background technology
Along with the develop rapidly of urban road construction, express highway has run through big samll cities and towns, and owing to the quickening of the speed of a motor vehicle, the rear-end collision bump accident on the express highway also takes place again and again simultaneously.Especially fog precipitation weather is fuzzy because of the visual field, or drives the direct inducement that has an accident especially because of driver fatigue at hot weather.Existing brake gear is made up of with the brake cylinder brake tread plate, vacuum booster, fuel tank, master cylinder, brake solution (gas) road.When the chaufeur pin touches on the brake tread plate, under vacuum booster is assisted, promote the piston in the master cylinder, produce high pressure oil, through brake fluid line, be delivered to brake oil cylinder, promote the lock that rises of wheel, produce braking effect.When chaufeur releasing of brake tread plate, the piston in the master cylinder resets under the effect of spring, and the high pressure oil in the oil circuit is released, and flows back to fuel tank, and the wheel brake lock that rises is lax, the brake system reinstatement.
The report of relevant rear-end collision active anticollision device in the current techniques information, air sac human body anticollision device is only arranged, but it can only alleviate the part safety problem that the back passenger that collides causes because of bump passively, fail fundamentally initiatively to prevent the generation of car accident, avoid vehicle to push, be out of shape caused personal safety because of the car body that the bump that knocks into the back continuously causes, and the damage of avoiding vehicle.
" autonomous cruise speed system " literary composition in December, 98 " automobile digest ", once mentioned the active anti-collision technique that the cooperation of adopting a plurality of electromagnetic valve actions reaches automobile, its shortcoming is that braking time is long and can not use the manpower brake simultaneously, thereby still has certain danger unavoidably.
Publication number is to have introduced a kind of automobile linkage brake system in the patent of invention of CN1215005A, utilizes vehicle-mounted velocity radar, surveys the road speed of front vehicles, and the computing machine on car is judged, maintained safe distance automatically.The signal that this invention utilizes front truck tail signal feedway to send in the car brakeing process passes to the back vehicle, utilizes vehicle self anti-skid brake system to realize interlock.But this invention is confined to have in the vehicle of antiblock device and uses, and requires the front vehicles afterbody that sender unit must be installed, also must be in two cars be in safe stopping distance scope, could actv. prevent the generation of rear-end collision.
Summary of the invention
The objective of the invention is at the deficiencies in the prior art, initiatively anticollision device of a kind of rear-end collision is provided, can before the bump that knocks into the back takes place, needn't vehicle initiatively be braked, make driving safer more reliable by under the situation of pilot control brake gear.
For realizing such purpose, in the technical scheme of the present invention, adopted vehicle-mounted Doppler range rate measurement range only radar, the speed of a motor vehicle of monitoring front vehicles and two vehicle headways, and data are sent to the electronic operation circuit, carry out computing and judgement, when two following distances excessively closely close on collision, in time give the alarm, realize car brakeing automatically by the chaufeur abrupt deceleration vehicle or by brake actuating mechanism.
Device of the present invention mainly comprises vehicle-mounted Doppler range rate measurement range only radar, electronic operation circuit, display screen and brake actuating mechanism, vehicle-mounted Doppler range rate measurement range only radar is connected with the electronic operation circuit, the output of electronic operation circuit is connected with the high-speed figure valve, links to each other with display screen simultaneously.Main inventive point of the present invention is in brake actuating mechanism.Brake actuating mechanism is series connection one integrated valve block on original brake solution (gas) road, one direct current motor is set in the integrated valve block to be connected with miniature internal gear driving oil pump, the import of oil pump connects the fuel tank of master cylinder, be connected with high-speed figure valve return opening simultaneously, outlet connects the oil inlet of energy storage, pressure relay and high-speed figure valve through check valve.The import of oil pump is also got back in the oil pump outlet through check valve, safety valve, form oil pressure and discharge the loop.The high-speed figure valve is connected with pilot operated directional control valve, and the liquid controlled reversing valve outlet port links to each other with two wheel brake oil cylinders through check valve, and is connected to the oil pocket of master cylinder through check valve.
DC machine in the integrated valve block utilizes vehicle self storage battery as the energy, drives oil pump and sucks fluid, and pressurization back one tunnel enters energy storage, and another road is to the oil inlet of high-speed figure valve.When the oil pressure in the energy storage arrived the top pressure value Pmax that sets, under the oil pressure effect, the pressure relay action quit work oil pump.If pressure relay work is malfunctioning, can't cut off drive circuit of DC motor, then the high pressure oil of oil pump output can discharge through check valve, safety valve, to avoid burning DC machine because of overload.When oil pressure in the energy storage dropped to the minimal pressure value Pmin of setting, the pressure relay action worked on oil pump by DC machine.
Vehicle is under the situation of running at high speed, the back vehicle can record the speed of a motor vehicle and two following distances of front vehicles, and be delivered to the electronic operation circuit by the Doppler range rate measurement range only radar, circuit is made and the judgement for " just ", " bearing " or " zero " of the difference of this car speed of a motor vehicle after computing.Relevant data all shows in electronic curtain.When running into the speed difference for " just " value, promptly two following distances reduce gradually.In case distance is closed on the collision critical gap eve (critical gap can be set in advance by different car body weight) between two cars, arithmetical circuit is when sending alerting signal (as buzzer phone or alarm lamp), and the peak pulse duration of the pulse-width signal that arithmetical circuit is made increases gradually.Submit to chaufeur should take the measure of slowing down or dodging this moment, the generation of the bump accident that prevents to knock into the back.In case this alerting signal fails to cause the attention of chaufeur, continue to reduce at two following distances, the peak pulse duration of pulse-width signal continues to increase to the high-speed figure change-over valve action that is enough to make in the brake actuating mechanism, causes the automatic conducting in brake solution (gas) road, makes vehicle obtain braking.
Adopted the high-speed figure change-over valve in the device of the present invention, thereby the glancing impact compole is short; Because adopt the control of pulse width signal, thereby in peak pulse duration increase process gradually, the effect of the existing gradual braking in brake noise (gas) road; Owing to be provided with relevant check valve etc. in the brake actuating mechanism, in the braking brake process, do not influence and adopt the manpower brake simultaneously.The present invention can realize the brake quickly under normal manpower brake and the crashproof state, makes driving safer more reliable.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Among the figure, 1-brake pedal plate, 2-vacuum booster, the 3-fuel tank, 4-master cylinder, 5-brake oil cylinder, 6,7-brake oil pipe, 8-DC machine, 9-internal gear oil pump, 10-first check valve, 11-safety valve, 12-energy storage, the 13-compression indicator, 14, the 15-pressure relay, 16-high-speed figure change-over valve, the 17-hydraulicchange-over valve, 18-throttling governing valve, 19-1-second check valve, 19-2-the 3rd check valve, 20-1-the 4th check valve, 20-2-the 5th check valve, 21～36-oil pipe, 37, the 38-hydraulic fluid port, 39,41-oil pocket, 40, the 42-piston.
The specific embodiment
Below in conjunction with accompanying drawing technical scheme of the present invention is further described.
As shown in the figure, the present invention includes vehicle-mounted Doppler range rate measurement range only radar, electronic operation circuit, display screen and brake actuating mechanism, vehicle-mounted Doppler range rate measurement range only radar is connected with the electronic operation circuit, and the output of electronic operation circuit is connected with the high-speed figure valve, links to each other with display screen simultaneously.Brake actuating mechanism is series connection one integrated valve block on original brake solution (gas) road, is provided with compositions such as DC machine 8, miniature internal gear driving oil pump 9, first check valve 10, safety valve 11, energy storage 12, compression indicator 13, pressure relay 14,15, high-speed figure valve 16, pilot operated directional control valve 17, throttling governing valve 18, the second check valve 19-1, the 3rd check valve 19-2, the 4th check valve 20-1, the 5th check valve 20-2 and oil circuit 21～36 in the integrated valve block.Wherein oil circuit 19～36 constitutes by the relevant duct in the pile-up valve block.
DC machine 8 connects driving oil pump 9, the import of oil pump 9 connects the fuel tank 3 of master cylinder 4, be connected with the return opening of high-speed figure valve 16 simultaneously, the outlet of oil pump 9 is behind first check valve 10, one oil circuit connects the oil inlet P of energy storage 12, two pressure relayes 14,15 and high-speed figure valve 16, and the driving circuit of DC machine 8 links to each other with the contact of pressure relay 14,15.The outlet of oil pump 9 another oil circuit behind first check valve 10 is connected to the import of oil pump 9 through safety valve 11, form oil pressure and discharge the loop, high-speed figure valve 16 is connected with pilot operated directional control valve 17 by oil circuit 25,26, pilot operated directional control valve 17 outlets divide two-way, one the tunnel links to each other with two wheel brake oil cylinders 5 through the second check valve 19-1, another road links to each other through throttling governing valve 18, two wheel brake oil cylinders 5 of the 3rd check valve 19-2 and other, and two-way is connected to the oil pocket 39 and 41 of master cylinder simultaneously respectively through the 4th check valve 20-1 and the 5th check valve 20-2.
Initiatively brake fluid line work is divided into the active brake under normal manpower brake and the crashproof state.
Normal manpower brake operating mode:
When the chaufeur pin touches on the brake pedal 1, under the assistance of vacuum booster 2, piston in the master cylinder 4 40,42 is moved to left, and hydraulic fluid port 37,38 is sealed, fluid in the oil pocket 39,41 in the master cylinder 4 is under the continuation effect of pedal 1 and vacuum booster 2, produce high pressure, behind brake oil pipe 6,7 and the 4th check valve 20-1, the 5th check valve 20-2, arrive brake oil cylinder 5 through oil circuit 33,34, high pressure oil also can arrive brake oil cylinder 5 through pilot operated directional control valve 17 and oil circuit 33,34 and produce gear control effect through brake oil pipe 6,7 to oil circuit 29,30.When the step 1 of chaufeur releasing of brake, piston 40,42 is returned to shown position under action of the spring, and hydraulic fluid port 37,38 is opened, the high pressure oil of brake oil cylinder 5 is reverse by pilot operated directional control valve 17 through oil circuit 33,34, turn back to brake oil pipe 6,7 and master cylinder 4 to fuel tank 3, discharge oil pressure, the lock that rises at lax wheel place, all return to the virgin state before the brake.
The operating mode of initiatively braking under the crashproof state:
DC machine 8 among the integrated valve block I utilizes vehicle self storage battery to suck fluid from fuel tank 3 through oil circuit 32,21,19 as driven by energy oil pump 9, after the oil pump pressurization, behind oil circuit 35, first check valve 10, one the tunnel enters energy storage 12, and another road is stand-by to the oil inlet of high-speed figure valve 16 through oil circuit 24.When the oil pressure in the energy storage 12 arrives the top pressure value Pmax that sets, under the oil pressure effect, pressure relay 14 actions on the oil circuit 24, the driving circuit that cuts off DC machine 8, DC machine 8 shuts down, and oil pump quits work.When oil pressure in the energy storage 12 drops to the minimal pressure value Pmin of setting, pressure relay 15 actions, the driving circuit of DC machine 8 is connected, DC machine 8 is resumed work, oil pump continues to repeat aforesaid suction oil process (annotate: Pmax and Pmin are by the required operation pressure decision of car brakeing) if pressure relay 14 work are malfunctioning, can't cut off the driving circuit of DC machine 8, then the high pressure oil of oil pump 9 outputs can be through oil circuit 35, first check valve 10, oil circuit 23, safety valve 11 discharges, through oil circuit 36, get back to the import of oil pump 9, to avoid burning DC machine 8 because of overload.
When the Doppler range rate measurement range only radar measures rear-end collision bump when being in the critical gap state, the peak pulse duration of the pulse-width signal of being sent by the aforementioned electronic arithmetical circuit increases to certain ratio, this signal is input to the electromagnet of high-speed figure valve 16, under the effect of electromagnet suction, the displacement of the spool of high-speed figure valve 16.Its work function converts the pressure oil at oil circuit 24 places to by the operating mode position that communicates with 22 of oil circuit 25 shown in the accompanying drawing 1, behind high-speed figure valve 16, the spool of delivering to the pressure oil promotion pilot operated directional control valve 17 of oil circuit 25 and 26 respectively moves, its work function switches to oil circuit 30 and 33 by shown position, 29 and 34 are cut off, and the pressure oil one tunnel of oil circuit 25 is through throttling governing valve 18, oil circuit 27, the 3rd check valve 19-2, oil circuit 33 is to the wheel brake oil cylinder, another road is through the oil circuit 28 and the second check valve 19-1, oil circuit 34 arrives brake oil cylinder 5, finally force the vehicle autobrake, the generation of the bump accident of avoiding knocking into the back.This moment, chaufeur still can use the manpower brake function.Throttling governing valve 18 is the opening degrees by control cock, equates with load in 28 and is provided with to guarantee oil circuit 27.
When the bump all clear that knocks into the back, the peak pulse duration of pulse-width signal reduces, and then the electromagnet suction of high-speed figure valve 16 disappears, and valve 16 and 17 spool are respectively under action of reset spring separately, be returned to initial position shown in the accompanying drawing, then all return to normal working.
When device of the present invention is used for pneumatic brake and communicates, then can omit DC machine 8, oil pump 9, first check valve 10, safety valve 23, pressure relay 14,15, energy storage 12 and corresponding oil circuit in the valve piece by vehicle self source of the gas.
The model machine of the present invention's trial-production is installed in Nanjing and produces two tons of lorry crossbeams of board place of making a leapleap forward, and 500ml brake in parallel again fuel tank in former brake fuel tank place connects each relevant oil circuit by oil piping system figure then, and energy storage keeps 4.0～6.0Mpa.Due to limited conditions, only can travel with the 60km/h speed of a motor vehicle by empty wagons on factory road, through repeated tests, vehicle all can safe, successful snap catch when the peak pulse duration of pulse-width signal rises to 80%.
Claims (1)
1, a kind of rear-end collision is anticollision device initiatively, comprise vehicle-mounted Doppler range rate measurement range only radar, the electronic operation circuit, display screen and brake actuating mechanism, it is characterized in that vehicle-mounted Doppler range rate measurement range only radar is connected with the electronic operation circuit, the output of electronic operation circuit is connected with the high-speed figure valve, link to each other with display screen simultaneously, in the brake actuating mechanism, series connection one integrated valve block on original brake fluid line, DC machine in the integrated valve block (8) connects driving oil pump (9), the import of oil pump (9) connects the fuel tank (3) of master cylinder (4), be connected with high-speed figure valve (16) return opening simultaneously, the outlet of oil pump (9) is behind first check valve (10), one oil circuit connects energy storage (12), pressure relay (14,15) and the oil inlet (P) of high-speed figure valve (16), another oil circuit is connected to the import of oil pump (9) through safety valve (11), form oil pressure and discharge the loop, high-speed figure valve (16) is by oil circuit (25,26) be connected with pilot operated directional control valve (17), pilot operated directional control valve (17) outlet divides two-way, one the tunnel links to each other with two wheel brake oil cylinders (5) through second check valve (19-1), another road is through throttling governing valve (18), the 3rd check valve (19-2) links to each other with other two wheel brake oil cylinders (5), two-way is connected to the oil pocket (39 of master cylinder simultaneously respectively through the 4th check valve (20-1) and the 5th check valve (20-2), 41), the driving circuit of DC machine (8) and pressure relay (14,15) contact links to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03115900 CN1224541C (en) | 2003-03-20 | 2003-03-20 | Active device for preventing automobile wear end collision |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03115900 CN1224541C (en) | 2003-03-20 | 2003-03-20 | Active device for preventing automobile wear end collision |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1473730A CN1473730A (en) | 2004-02-11 |
| CN1224541C true CN1224541C (en) | 2005-10-26 |
Family
ID=34152599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03115900 Expired - Fee Related CN1224541C (en) | 2003-03-20 | 2003-03-20 | Active device for preventing automobile wear end collision |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1224541C (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1847066B (en) * | 2005-04-15 | 2010-09-08 | 浙江吉利控股集团有限公司 | Composite shuttle-valve oil cylinder and the brake executing mechanism therewith for automatic control vehicle reducing system |
| CN101287634B (en) * | 2005-10-13 | 2012-08-15 | 日产自动车株式会社 | Vehicle driving assist system |
| JP5077733B2 (en) * | 2006-03-31 | 2012-11-21 | いすゞ自動車株式会社 | Vehicle braking device |
| JP4518080B2 (en) * | 2007-01-09 | 2010-08-04 | トヨタ自動車株式会社 | Perimeter monitoring device |
| US8447472B2 (en) * | 2007-01-16 | 2013-05-21 | Ford Global Technologies, Llc | Method and system for impact time and velocity prediction |
| CN101324667B (en) * | 2007-06-13 | 2012-06-27 | 邹谋炎 | Design of vehicle velocity detection radar and signal processing method |
| CN102107638A (en) * | 2009-12-28 | 2011-06-29 | 颜三林 | Multifunctional pre-warning anti-collision device |
| CN101857014A (en) * | 2010-06-22 | 2010-10-13 | 三一集团有限公司 | Vehicle brake system and vehicle with same |
| CN102259640A (en) * | 2011-07-19 | 2011-11-30 | 奇瑞汽车股份有限公司 | Vehicle speed limiting warning protection system and control method thereof |
-
2003
- 2003-03-20 CN CN 03115900 patent/CN1224541C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1473730A (en) | 2004-02-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106427998B (en) | The control method of the urgent lane change collision avoidance of vehicle under a kind of fast state | |
| CN201154697Y (en) | Automobile anti-collision system | |
| CN102627100B (en) | Vehicle double-brake system based on electro-hydraulic control technology and brake method thereof | |
| CN102463970B (en) | Automobile short-distance braking control device and automobile short-distance braking control method using same | |
| CN1224541C (en) | Active device for preventing automobile wear end collision | |
| CN101590846A (en) | Automatic protection system for vehicle anticollision | |
| CN102381304B (en) | Automatic emergency clutch brake device for automobile | |
| CN105946824B (en) | A kind of autobrake system and its brake method based on suspension vibration energy regenerating | |
| CN203698104U (en) | Anti-scratching monitoring device for automobile chassis | |
| CN101934819B (en) | Bus chassis articulated system for urban bus rapid transit system and working method thereof | |
| CN205469033U (en) | Initiative collision avoidance system based on novel solenoid valve accuse hydraulic braking | |
| CN105501204A (en) | Active collision-avoidance system based on novel solenoid valve controlling hydraulic braking and braking method | |
| CN2843942Y (en) | The traffic accident prevention device | |
| CN203496879U (en) | Double-loop braking system of internal combustion tractor | |
| CN104842714A (en) | Automotive short-distance auxiliary emergency braking system and braking method thereof | |
| CN204605408U (en) | A kind of automobile short range auxiliary emergent brake system | |
| CN109501802A (en) | Active brake system based on Electric booster | |
| CN201380837Y (en) | Vehicle anti-collision and automatic protection device | |
| CN205554112U (en) | Miss intelligence anticollision initiative control system that steps on gas | |
| CN200964105Y (en) | Multifunctional automobile thumber | |
| CN101434217A (en) | Automobile brake lamp control device and control method thereof | |
| CN1142073C (en) | Automatic emergency brake system for high-speed running automobile with burst tyre | |
| CN201002577Y (en) | Automobile tertiumquid protecting device | |
| CN2892596Y (en) | Vehicle inertial braking auxiliary device | |
| CN214565277U (en) | Auxiliary brake device of heavy-duty car |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |