CN103481875A - Automotive braking automatic auxiliary system and control method thereof - Google Patents

Automotive braking automatic auxiliary system and control method thereof Download PDF

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Publication number
CN103481875A
CN103481875A CN201310440866.XA CN201310440866A CN103481875A CN 103481875 A CN103481875 A CN 103481875A CN 201310440866 A CN201310440866 A CN 201310440866A CN 103481875 A CN103481875 A CN 103481875A
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CN
China
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electronic controller
road
auxiliary
vehicle
control
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CN201310440866.XA
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Chinese (zh)
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CN103481875B (en
Inventor
王正键
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广东交通职业技术学院
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Publication of CN103481875A publication Critical patent/CN103481875A/en
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Abstract

The invention discloses an automotive braking automatic auxiliary system and a control method thereof. The automotive braking automatic auxiliary system comprises a power supply module and an electronic controller; the electronic controller is connected with a road surface selecting unit, a speed monitoring device, a road surface humidity sensor, a distance measuring sensor, an alarm module and a brake parachute system; the power supply module provides power for the electronic controller and the brake parachute system. The control method includes that the safe driving distance is calculated out through the electronic controller according to the current speed and the road surface driving environment; the relation between the current actual distance and the safe distance is measured out through the distance measuring sensor; an appropriate control instruction is given out through the electronic controller according to the relation between the current actual distance and the safe distance. According to the automotive braking automatic auxiliary system and the control method thereof, real-time all-around monitoring can be performed on the driving environment, the driving pressure of drivers can be reduced, and the safe driving under different environmental road surfaces can be ensured.

Description

A kind of automobile brake automatic auxiliary auxiliary system and control method thereof
Technical field
The present invention relates to the vehicle safety technical field, is the control method of a kind of automobile brake automatic auxiliary auxiliary system and this system specifically.
Background technology
The chaufeur that fatigue, medicine or other reasons cause is absent minded, and the impact of the factor such as weather easily makes chaufeur produce erroneous judgement to the distance between front vehicles, pedestrian or other obstacles, cause the automobile brake distance not, cause traffic accident.In addition, under different road environments and different vehicle speed condition, the stopping distance of automobile is also different, and whether chaufeur can only rely on the micro-judgment stopping distance of oneself now enough, and this is also one of reason of traffic accident generation.
The main braking force of automobile, from the friction force between wheel and road surface, in order to strengthen braking force, reduces stopping distance at present, and a lot of contrivers propose, at the afterbody of vehicle, deceleration parachute is installed, and the increase air resistance of take is braking force.For example, but present technology still comes with some shortcomings: 1, need chaufeur manually to open deceleration parachute, can increase like this operation of chaufeur, it is divert one's attention, easier accident; 2,, under the environment of low visibility, accurately judging distance of chaufeur, can't open deceleration parachute in time; Although 3, some technology is to open with the computer controlled automatic deceleration parachute, do not possess the ability of distinguishing the road conditions situation, make deceleration parachute open evening or mistake is opened, cause the accident.
Summary of the invention
Task of the present invention is for above-mentioned technical matters, to propose automobile brake automatic auxiliary auxiliary system and the control method thereof of a kind of intellectuality, automation.
Technological means: the invention discloses a kind of automobile brake automatic auxiliary auxiliary system, comprise power module and electronic controller, electronic controller is connected with respectively:
The road conditions selected cell is that to set current environment be road snow, icy on road or non-ice and snow road to electronic controller according to the road surface actual environment; With
Speed of a motor vehicle control monitor unit, monitoring also reports the real-time speed of a motor vehicle to electronic controller; With
The pavement humidity sensor, monitoring also reports the pavement humidity data to electronic controller; With
Distance measuring sensor, for the distance between monitoring and front vehicles, pedestrian or obstacle, and report electronic controller by result; With
Alarm module, according to the indication of electronic controller, send alarm prompt; With
Drag chute system, according to the indication of electronic controller, emit deceleration parachute;
Power module provides power supply for electronic controller and drag chute system.
Drag chute system comprises the umbrella storehouse that is arranged on vehicle tail, the deceleration parachute be connected with vehicle tail by rope and air receiver, wherein air receiver is connected with the umbrella storehouse by gas blow pipe, be provided with solenoid electric valve on gas blow pipe, the control end of solenoid electric valve is connected with described electronic controller by a solid-state relay, be provided with aspirate tube on storage tank, be provided with charge valve on aspirate tube, deceleration parachute folds in the umbrella storehouse; This drag chute system comprises the automatic umbrella-closing device be arranged in the umbrella storehouse, and this mechanism comprises a motor, and motor is connected with a coiling runner by a power-transfer clutch, on the coiling runner, is wound with bracing wire, and the other end of bracing wire is connected with described deceleration parachute.
The road conditions selected cell is manual selection switch.
Distance measuring sensor is LDM301 laser type rang sensor.
Alarm module is a control multistage voice alarm circuit able to programme.
Electronic controller is connected with the braking indicator lamp of vehicle by a relay.
The control method of this automobile brake automatic auxiliary auxiliary system is: after automobile starting, power module provides power supply for electronic controller and drag chute system, and it is road snow, icy on road or non-ice and snow road that chaufeur is set current Vehicle Driving Cycle road surface by the road conditions selected cell; When the road surface situation is non-ice and snow road, humidity sensor determines whether the ponding road surface by the humidity of monitoring wheel; The moving velocity of the real-time monitoring vehicle of while speed of a motor vehicle control monitor unit;
Electronic controller is set the adhesion value on tire and road surface according to the road surface situation, and calculates the safety traffic spacing according to the real-time vehicle running speed gauge; Distance between the real-time monitoring of distance measuring sensor and front vehicles, pedestrian or obstacle, when the distance detected:
Equal safety traffic apart from the time, electronic controller sends instruction to described alarm module, controls it and sends warning information;
Be less than safety traffic apart from the time, electronic controller is controlled drag chute system and is activated to open deceleration parachute, sends instruction to alarm module simultaneously, controller sends warning information.
Alarm module is a control multistage voice alarm circuit able to programme, and it is solidified with and comprises " spacing has reached critical value, asks braking deceleration " and " deceleration parachute will be opened automatically for being in danger of vehicle distance, braking deceleration immediately please " two sections voice modules.
Electronic controller, when the control drag chute system is opened deceleration parachute, is controlled bright the opening of braking indicator lamp of vehicle.
Beneficial effect: 1, electronic controller is according to the driving road environment of vehicle and the safe space between motorcars of speed of a motor vehicle setting in real time, by distance measuring sensor detect vehicle with track front vehicles, obstacle and pedestrian's real-time distance, realization is carried out omnibearing intelligent security monitoring to vehicle traveling process, alleviates the pressure of driving of chaufeur; 2, control deceleration parachute by electronic controller, without manual operation, can guarantee in time, automobile brake accurately.
The accompanying drawing explanation
Fig. 1 is system architecture schematic diagram of the present invention;
Fig. 2 is occupation mode schematic diagram of the present invention;
Fig. 3 is mode diagram of circuit of the present invention.
The specific embodiment
As depicted in figs. 1 and 2, the invention discloses a kind of automobile brake automatic auxiliary auxiliary system, comprise power module 8 and electronic controller 1, electronic controller 1 is connected with respectively road surface selected cell 2, speed of a motor vehicle control monitor unit 5, pavement humidity sensor 4, distance measuring sensor 3, alarm module 6 and drag chute system 9, and power module provides power supply for electronic controller and drag chute system.Wherein:
Road surface selected cell 2 is the manual selection switch button, and it is road snow 21, icy on road 22 or non-ice and snow road 23 that navigating mate need to be selected current environment according to the road surface actual environment;
Speed of a motor vehicle control monitor unit 5, when speed measuring device that self-propelled vehicle itself carries, can directly be connected with electronic controller 1 by signal wire (SW), otherwise need to install voluntarily, its objective is the real-time monitoring speed of a motor vehicle, and result is informed to electronic controller 1;
Pavement humidity sensor 4 is arranged on the front vehicle wheel rear of automobile, when the current environment of road surface selected cell 2 selections is non-ice and snow road, 4 monitorings of pavement humidity sensor also report the pavement humidity data to electronic controller 1, when pavement humidity is greater than 95%RH, electronic controller 1 will think that current road surface running vehicle environment is surface gathered water;
Distance measuring sensor 3 is LDM301 laser type rang sensor, and it is arranged on front part of vehicle, for the real-time distance between monitoring and front vehicles, pedestrian or obstacle, and result is reported to electronic controller 1;
Alarm module 6 is a control multistage voice alarm circuit able to programme, it is solidified with and comprises " spacing has reached critical value; ask braking deceleration " and " being in danger of vehicle distance; braking deceleration immediately please; deceleration parachute will be opened automatically ", or similar two ends voice program module with it, alarm module 6, according to the indication of electronic controller 1, in the light of actual conditions sends corresponding phonic warning prompting;
Drag chute system 9 comprises the umbrella storehouse 902 that is arranged on vehicle tail, the deceleration parachute 901 be connected with vehicle tail by rope 911 and air receiver 903, wherein air receiver 903 is connected with umbrella storehouse 902 by gas blow pipe 904, be provided with solenoid electric valve 906 on gas blow pipe 904, solenoid electric valve 906 is connected on a solid-state relay 7 by wire 910, solid-state relay 7 is connected with electronic controller 1, be provided with aspirate tube 905 on storage tank 903, be provided with charge valve 907 on aspirate tube 905, air-pressure gauge 909 and be provided with cover of dust 908 at the air-breathing mouth of pipe, deceleration parachute 901 folds in the umbrella storehouse in 902, and according to the instruction unpack of electronic controller 1.This drag chute system 9 can also comprise the automatic umbrella-closing device be arranged in the umbrella storehouse, this mechanism comprises a motor, and motor is connected with a coiling runner by a power-transfer clutch, on the coiling runner, is wound with bracing wire, the other end of bracing wire is connected on deceleration parachute, when deceleration parachute need to be opened, power-transfer clutch separates motor with the line wheel, and the line wheel freely rotates with deceleration parachute and emits bracing wire, when deceleration parachute need to be packed up, power-transfer clutch is by motor and the engagement of line wheel, and line is taken turns with revolution, pulls bracing wire to pack up deceleration parachute;
Electronic controller 1 is connected with the braking indicator lamp 10 of vehicle by relay 7.
The control method of this automobile brake automatic auxiliary auxiliary system is as shown in Figure 3: after automobile starting, power module provides power supply for electronic controller and drag chute system, and it is road snow, icy on road or non-ice and snow road that chaufeur is set current Vehicle Driving Cycle road surface by the road conditions selected cell; When the road surface situation is non-ice and snow road, humidity sensor determines whether the ponding road surface by the humidity of monitoring wheel; The moving velocity of the real-time monitoring vehicle of while speed of a motor vehicle control monitor unit;
Electronic controller is set the adhesion value on tire and road surface according to the road surface situation, usually dry pavement (refers to pitch or cement concrete during road surface, down together), the adhesion value of ponding road surface, ice-patch surface and snowy road surface is respectively 0.75,0.45,0.07 and 0.15, calculate the safety traffic spacing according to the real-time vehicle running speed gauge, computing formula: , the minimum separation distances that wherein S is safety traffic, V is current vehicle speed, and μ is adhesion value, and g is acceleration due to gravity; Between the real-time monitoring of distance measuring sensor and front vehicles, pedestrian or obstacle apart from S ', when:
During S '>S, actual distance is greater than minimum separation distances, and system is without pointing out and continuing monitoring;
During S '=S, actual distance equals minimum separation distances, and electronic controller sends instruction to alarm module, controls the phonic warning information that it sends " spacing has reached critical value, asks braking deceleration ";
During S '<S, be that actual distance is less than minimum separation distances, electronic controller sends instruction to alarm module, control the phonic warning information that it sends " being in danger of vehicle distance; braking deceleration immediately please; deceleration parachute will be opened automatically ", control deceleration parachute simultaneously and open, and control bright the opening of braking indicator lamp of vehicle.

Claims (10)

1. an automobile brake automatic auxiliary auxiliary system is characterized in that: comprise power module and electronic controller, being connected with respectively of electronic controller:
The road conditions selected cell is that to set current environment be road snow, icy on road or non-ice and snow road to electronic controller according to the road surface actual environment; With
Speed of a motor vehicle control monitor unit, monitoring also reports the real-time speed of a motor vehicle to electronic controller; With
The pavement humidity sensor, monitoring also reports the pavement humidity data to electronic controller; With
Distance measuring sensor, for the distance between monitoring and front vehicles, pedestrian or obstacle, and report electronic controller by result; With
Alarm module, according to the indication of electronic controller, send alarm prompt; With
Drag chute system, according to the indication of electronic controller, open deceleration parachute;
Power module provides power supply for electronic controller and drag chute system.
2. automobile brake automatic auxiliary auxiliary system according to claim 1, it is characterized in that: described drag chute system comprises the umbrella storehouse that is arranged on vehicle tail, the deceleration parachute be connected with vehicle tail by rope and air receiver, wherein air receiver is connected with the umbrella storehouse by a gas blow pipe, be provided with solenoid electric valve on gas blow pipe, the control end of solenoid electric valve is connected with described electronic controller by a solid-state relay, be provided with aspirate tube on storage tank, be provided with charge valve on aspirate tube, deceleration parachute folds in the umbrella storehouse.
3. automobile brake automatic auxiliary auxiliary system according to claim 2, it is characterized in that: described drag chute system comprises the automatic umbrella-closing device be arranged in the umbrella storehouse, this mechanism comprises a motor, motor is connected with a coiling runner by a power-transfer clutch, be wound with bracing wire on the coiling runner, the other end of bracing wire is connected with described deceleration parachute.
4. automobile brake automatic auxiliary auxiliary system according to claim 1, it is characterized in that: described road conditions selected cell is manual selection switch.
5. automobile brake automatic auxiliary auxiliary system according to claim 1, it is characterized in that: described distance measuring sensor is LDM301 laser type rang sensor.
6. automobile brake automatic auxiliary auxiliary system according to claim 1, it is characterized in that: described alarm module is a control multistage voice alarm circuit able to programme.
7. according to the arbitrary described automobile brake automatic auxiliary auxiliary system of claim 1-6, it is characterized in that: described electronic controller is connected with the braking indicator lamp of vehicle by a relay.
8. the control method of described automobile brake automatic auxiliary auxiliary system as arbitrary as claim 1-7, it is characterized in that: after automobile starting, described power module provides power supply for described electronic controller and described drag chute system, and it is road snow, icy on road or non-ice and snow road that chaufeur is set current Vehicle Driving Cycle road surface by described road conditions selected cell; When the road surface situation is non-ice and snow road, described humidity sensor determines whether the ponding road surface by the humidity of monitoring wheel; The moving velocity of the real-time monitoring vehicle of described speed of a motor vehicle control monitor unit of while;
Electronic controller is set the adhesion value on tire and road surface according to the road surface situation, and calculates the safety traffic spacing according to the real-time vehicle running speed gauge; Distance between the real-time monitoring of described distance measuring sensor and front vehicles, pedestrian or obstacle, when the distance detected:
Equal safety traffic apart from the time, electronic controller sends instruction to described alarm module, controls it and sends warning information;
Be less than safety traffic apart from the time, electronic controller sends instruction to alarm module, controls it and sends warning information, controls drag chute system simultaneously and activates to open deceleration parachute.
9. the control method of automobile brake automatic auxiliary auxiliary system according to claim 8, it is characterized in that: described alarm module is a control multistage voice alarm circuit able to programme, it is solidified with and comprises " spacing has reached critical value; ask braking deceleration " and " being in danger of vehicle distance; braking deceleration immediately please, deceleration parachute will be opened automatically " two sections voice modules.
10. the control method of automobile brake automatic auxiliary auxiliary system according to claim 8 or claim 9 is characterized in that: described electronic controller, when controlling drag chute system and opening deceleration parachute, is controlled bright the opening of braking indicator lamp of vehicle.
CN201310440866.XA 2013-09-25 2013-09-25 A kind of automobile brake automatic auxiliary auxiliary system and control method thereof CN103481875B (en)

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CN201310440866.XA CN103481875B (en) 2013-09-25 2013-09-25 A kind of automobile brake automatic auxiliary auxiliary system and control method thereof

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Application Number Priority Date Filing Date Title
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104608772A (en) * 2014-12-25 2015-05-13 财团法人车辆研究测试中心 System and method for judging environmental failure of automatic aided driving
CN106274643A (en) * 2015-05-27 2017-01-04 昆山研达电脑科技有限公司 Hydrops road surface detection device
CN108202729A (en) * 2016-12-20 2018-06-26 宝沃汽车(中国)有限公司 For the method and apparatus of parking control
CN110884357A (en) * 2019-11-20 2020-03-17 台州学院 Braking energy recovery device of automatic driving automobile
CN111016894A (en) * 2020-01-08 2020-04-17 陈莲红 System capable of automatically identifying road conditions and controlling automobile cruise control

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US6488109B1 (en) * 1999-08-09 2002-12-03 Toyota Jidosha Kabushiki Kaisha Vehicle running stability control apparatus
CN1569524A (en) * 2003-07-15 2005-01-26 范子林 Intelligent control system for motor vehicle safety running
CN1994791A (en) * 2006-12-31 2007-07-11 霍明远 Automobile provided with braking parachute
CN2925984Y (en) * 2006-05-19 2007-07-25 王栋 Auxiliary automotive speed reducer
CN200951758Y (en) * 2006-04-17 2007-09-26 钱建余 Fast decelerating apparatus for automobile
CN102849047A (en) * 2012-09-06 2013-01-02 浙江吉利汽车研究院有限公司杭州分公司 Auxiliary system and auxiliary method for emergency brake
CN203496874U (en) * 2013-09-25 2014-03-26 广东交通职业技术学院 Automatic auxiliary system for automobile brake

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6488109B1 (en) * 1999-08-09 2002-12-03 Toyota Jidosha Kabushiki Kaisha Vehicle running stability control apparatus
CN1569524A (en) * 2003-07-15 2005-01-26 范子林 Intelligent control system for motor vehicle safety running
CN200951758Y (en) * 2006-04-17 2007-09-26 钱建余 Fast decelerating apparatus for automobile
CN2925984Y (en) * 2006-05-19 2007-07-25 王栋 Auxiliary automotive speed reducer
CN1994791A (en) * 2006-12-31 2007-07-11 霍明远 Automobile provided with braking parachute
CN102849047A (en) * 2012-09-06 2013-01-02 浙江吉利汽车研究院有限公司杭州分公司 Auxiliary system and auxiliary method for emergency brake
CN203496874U (en) * 2013-09-25 2014-03-26 广东交通职业技术学院 Automatic auxiliary system for automobile brake

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104608772A (en) * 2014-12-25 2015-05-13 财团法人车辆研究测试中心 System and method for judging environmental failure of automatic aided driving
CN104608772B (en) * 2014-12-25 2017-04-12 财团法人车辆研究测试中心 System and method for judging environmental failure of automatic aided driving
CN106274643A (en) * 2015-05-27 2017-01-04 昆山研达电脑科技有限公司 Hydrops road surface detection device
CN108202729A (en) * 2016-12-20 2018-06-26 宝沃汽车(中国)有限公司 For the method and apparatus of parking control
CN108202729B (en) * 2016-12-20 2020-11-13 宝沃汽车(中国)有限公司 Method and device for parking control
CN110884357A (en) * 2019-11-20 2020-03-17 台州学院 Braking energy recovery device of automatic driving automobile
CN111016894A (en) * 2020-01-08 2020-04-17 陈莲红 System capable of automatically identifying road conditions and controlling automobile cruise control

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