CN103481875B - A kind of automobile brake automatic auxiliary auxiliary system and control method thereof - Google Patents
A kind of automobile brake automatic auxiliary auxiliary system and control method thereof Download PDFInfo
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- CN103481875B CN103481875B CN201310440866.XA CN201310440866A CN103481875B CN 103481875 B CN103481875 B CN 103481875B CN 201310440866 A CN201310440866 A CN 201310440866A CN 103481875 B CN103481875 B CN 103481875B
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Abstract
The invention discloses a kind of automobile brake automatic auxiliary auxiliary system and control method thereof, this ancillary system comprises power module and electronic controller, electronic controller is connected to road surface selection unit, speed of a motor vehicle control monitor unit, pavement humidity sensor, distance measuring sensor, alarm module and drag chute system, and power module provides power supply for electronic controller and drag chute system.Its control method is: electronic controller calculates safety traffic spacing by current vehicle speed and road traveling environment, measure the relation between current actual distance and safety distance by distance measuring sensor, send suitable control command by electronic controller according to both relations.Feature of the present invention omnibearingly in real time to monitor environment, can alleviate the pressure of driving of chaufeur, guarantee the safety traffic under varying environment road surface.
Description
Technical field
The present invention relates to technical field of vehicle safety, is the control method of a kind of automobile brake automatic auxiliary auxiliary system and this system specifically.
Background technology
The driver attention that fatigue, medicine or other reasons cause does not concentrate, 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 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 present chaufeur can only rely on the micro-judgment stopping distance of oneself enough, and this is also one of reason of occurring of traffic accident.
The main braking force of current automobile, from the friction force between wheel and road surface, in order to strengthen braking force, reduces stopping distance, and a lot of contriver proposes to install deceleration parachute, to increase air resistance for braking force at the afterbody of vehicle.But present technology still comes with some shortcomings, such as: 1, need the manually opened deceleration parachute of chaufeur, the operation of chaufeur can be increased like this, make it divert one's attention, more easily traffic accident occurs; 2, under the environment of low visibility, chaufeur can not accurately judging distance, cannot open deceleration parachute in time; Although 3, some technology opens with computer controlled automatic deceleration parachute, do not possess the ability distinguishing load conditions, deceleration parachute opened evening or mistake are opened, causes the accident.
Summary of the invention
Task of the present invention is will for above-mentioned technical matters, proposes a kind of intellectuality, the automobile brake automatic auxiliary auxiliary system of automation and control method thereof.
Technological means: the invention discloses a kind of automobile brake automatic auxiliary auxiliary system, comprise power module and electronic controller, electronic controller is connected to:
Road conditions selection unit is that to set current environment be road snow, icy on road or non-ice and snow road to electronic controller according to 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
Pavement humidity sensor, monitoring also reports pavement humidity data to electronic controller; With
Distance measuring sensor, for the distance of monitoring and between front vehicles, pedestrian or obstacle, and reports electronic controller by result; With
Alarm module, according to the instruction of electronic controller, sends alarm prompt; With
Drag chute system, according to the instruction of electronic controller, releases deceleration parachute;
Power module provides power supply for electronic controller and drag chute system.
Drag chute system comprises the umbrella storehouse being arranged on vehicle tail, the deceleration parachute be connected with vehicle tail by rope and air receiver, wherein air receiver is connected with umbrella storehouse by gas blow pipe, gas blow pipe is provided with solenoid electric valve, the control end of solenoid electric valve is connected with described electronic controller by a solid-state relay, storage tank has been provided with aspirate tube, aspirate tube is provided with charge valve, and deceleration parachute folds in umbrella storehouse; This drag chute system comprises the automatic umbrella-closing device be arranged in umbrella storehouse, and this mechanism comprises a motor, and motor is connected with a coiling runner by a power-transfer clutch, and coiling runner is wound with bracing wire, and the other end of bracing wire is connected with described deceleration parachute.
Road conditions selection unit is manual selection switch.
Distance measuring sensor is LDM301 laser type rang sensor.
Alarm module is a PLC technology multistage voice alarm circuit.
Electronic controller is connected with the brake 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 chaufeur is road snow, icy on road or non-ice and snow road by road conditions selection unit setting Current vehicle track; When surface conditions is non-ice and snow road, humidity sensor determines whether ponding road surface by the humidity of monitoring wheel; The moving velocity of the real-time monitoring vehicle of speed of a motor vehicle control monitor unit simultaneously;
Electronic controller sets the adhesion value on tire and road surface according to surface conditions, and calculates safety traffic spacing according to real-time vehicle running speed gauge; Distance measuring sensor monitors in real time and distance between front vehicles, pedestrian or obstacle, the distance when detecting:
When equaling safety traffic distance, electronic controller sends instruction to described alarm module, controls it and sends warning information;
When being less than safety traffic distance, electronic controller controls drag chute system and activates to open deceleration parachute, and send instruction to alarm module, controller sends warning information simultaneously.
Alarm module is a PLC technology multistage voice alarm circuit, and it is solidified with and comprises " spacing reaches critical value, asks braking deceleration " and " danger vehicle distance, please braking deceleration immediately, deceleration parachute will be opened automatically " two sections of voice modules.
Electronic controller is while deceleration parachute opened by control drag chute system, and the brake indicator lamp of control vehicle is bright to be opened.
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, the real-time distance of vehicle and same lane preceding vehicle, obstacle and pedestrian is detected by distance measuring sensor, realize carrying out omnibearing intelligent security monitoring to vehicle traveling process, alleviate the pressure of driving of chaufeur; 2, control deceleration parachute by electronic controller, without the need to manual operation, can ensure in time, automobile brake accurately.
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.
Detailed description of the invention
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 to road surface selection unit 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 selection unit 2 is manual selection switch button, and navigating mate needs to select current environment to be road snow 21, icy on road 22 or non-ice and snow road 23 according to road surface actual environment;
Speed of a motor vehicle control monitor unit 5, when the speed measuring device that self-propelled vehicle itself carries, is directly connected with electronic controller 1 by signal wire (SW), otherwise needs to install voluntarily, its objective is and monitors the speed of a motor vehicle in real time, and result is informed electronic controller 1;
Pavement humidity sensor 4 is arranged on the front vehicle wheel rear of automobile, when the current environment that road surface selection unit 2 is selected is non-ice and snow road, pavement humidity sensor 4 is monitored and is reported 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 of monitoring and between front vehicles, pedestrian or obstacle, and result is reported electronic controller 1;
Alarm module 6 is a PLC technology multistage voice alarm circuit, it is solidified with and comprises " spacing reaches critical value; ask braking deceleration " and " danger vehicle distance; please braking deceleration immediately; deceleration parachute will be opened automatically ", or similar two ends voice program module with it, alarm module 6, according to the instruction of electronic controller 1, in the light of actual conditions sends the prompting of corresponding phonic warning;
Drag chute system 9 comprises the umbrella storehouse 902 being 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, gas blow pipe 904 is provided with solenoid electric valve 906, 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, storage tank 903 has been provided with aspirate tube 905, aspirate tube 905 is provided with charge valve 907, the air-pressure gauge 909 and air-breathing mouth of pipe is provided with cover of dust 908, deceleration parachute 901 to fold in 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 umbrella storehouse, this mechanism comprises a motor, and motor is connected with a coiling runner by a power-transfer clutch, and coiling runner is wound with bracing wire, the other end of bracing wire is connected on deceleration parachute, when deceleration parachute needs to open, motor is taken turns with line and is separated by power-transfer clutch, and line wheel freely rotates releases bracing wire with deceleration parachute, when deceleration parachute needs to pack up, motor is taken turns with line and is engaged by power-transfer clutch, and line wheel, with revolution, pulls bracing wire to pack up deceleration parachute;
Electronic controller 1 is connected with the brake 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 chaufeur is road snow, icy on road or non-ice and snow road by road conditions selection unit setting Current vehicle track; When surface conditions is non-ice and snow road, humidity sensor determines whether ponding road surface by the humidity of monitoring wheel; The moving velocity of the real-time monitoring vehicle of speed of a motor vehicle control monitor unit simultaneously;
Electronic controller sets the adhesion value on tire and road surface according to surface conditions, usual dry pavement (refers to pitch or cement concrete during road surface, lower with), ponding road surface, ice-patch surface and snowy road surface adhesion value be respectively 0.75,0.45,0.07 and 0.15, safety traffic spacing is calculated, computing formula according to real-time vehicle running speed gauge:
, wherein S is the minimum separation distances of safety traffic, and V is current vehicle speed, and μ is adhesion value, and g is acceleration due to gravity; Distance measuring sensor monitors in real time and distance S ' between front vehicles, pedestrian or obstacle, when:
During S ' > S, namely actual distance is greater than minimum separation distances, and system is without pointing out and continuing monitoring;
During S '=S, namely actual distance equals minimum separation distances, and electronic controller sends instruction to alarm module, controls the phonic warning information that it sends " spacing reaches critical value, asks braking deceleration ";
During S ' < S, namely actual distance is less than minimum separation distances, electronic controller sends instruction to alarm module, control the phonic warning information that it sends " danger vehicle distance; please braking deceleration immediately; deceleration parachute will be opened automatically ", control deceleration parachute simultaneously and open, and the brake indicator lamp controlling vehicle is bright opens.
Claims (9)
1. an automobile brake automatic auxiliary auxiliary system, is characterized in that: comprise power module and electronic controller, being connected to of electronic controller:
Road conditions selection unit, it is manual selection switch, is that to set current environment be road snow, icy on road or non-ice and snow road to electronic controller according to road surface actual environment, and then is the adhesion value on electronic controller setting tire and road surface; With
Speed of a motor vehicle control monitor unit, monitoring also reports the real-time speed of a motor vehicle to electronic controller; With
Pavement humidity sensor, monitoring also reports pavement humidity data to electronic controller; With
Distance measuring sensor, for the distance of monitoring and between front vehicles, pedestrian or obstacle, and reports electronic controller by result; With
Alarm module, according to the instruction of electronic controller, sends alarm prompt; With
Drag chute system, according to the instruction of electronic controller, opens 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 being arranged on vehicle tail, the deceleration parachute be connected with vehicle tail by rope and air receiver, wherein air receiver is connected with umbrella storehouse by a gas blow pipe, gas blow pipe is provided with solenoid electric valve, the control end of solenoid electric valve is connected with described electronic controller by a solid-state relay, storage tank has been provided with aspirate tube, aspirate tube is provided with charge valve, and deceleration parachute folds in 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 umbrella storehouse, this mechanism comprises a motor, motor is connected with a coiling runner by a power-transfer clutch, coiling runner is wound with bracing wire, and the other end of bracing wire is connected with described deceleration parachute.
4. automobile brake automatic auxiliary auxiliary system according to claim 1, is characterized in that: described distance measuring sensor is LDM301 laser type rang sensor.
5. automobile brake automatic auxiliary auxiliary system according to claim 1, is characterized in that: described alarm module is a PLC technology multistage voice alarm circuit.
6., according to the arbitrary described automobile brake automatic auxiliary auxiliary system of claim 1-5, it is characterized in that: described electronic controller is connected with the brake indicator lamp of vehicle by a relay.
7. the control method of the automobile brake automatic auxiliary auxiliary system as described in as arbitrary in claim 1-6, it is characterized in that: after automobile starting, described power module provides power supply for described electronic controller and described drag chute system, and chaufeur is road snow, icy on road or non-ice and snow road by described road conditions selection unit setting Current vehicle track; When surface conditions is non-ice and snow road, described humidity sensor determines whether 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 simultaneously;
Electronic controller sets the adhesion value on tire and road surface according to surface conditions, and calculates safety traffic spacing according to real-time vehicle running speed gauge; Described distance measuring sensor monitors in real time and distance between front vehicles, pedestrian or obstacle, the distance when detecting:
When equaling safety traffic distance, electronic controller sends instruction to described alarm module, controls it and sends warning information;
When being less than safety traffic distance, electronic controller sends instruction to alarm module, controls it and sends warning information, controls drag chute system simultaneously and activates to open deceleration parachute.
8. the control method of automobile brake automatic auxiliary auxiliary system according to claim 7, it is characterized in that: described alarm module is a PLC technology multistage voice alarm circuit, it is solidified with and comprises " spacing reaches critical value; ask braking deceleration " and " danger vehicle distance; please braking deceleration immediately, deceleration parachute will be opened automatically " two sections of voice modules.
9. the control method of the automobile brake automatic auxiliary auxiliary system according to claim 7 or 8, is characterized in that: described electronic controller is while deceleration parachute opened by control drag chute system, and the brake indicator lamp of control vehicle is bright to be opened.
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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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| 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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| CN103481875B true CN103481875B (en) | 2016-03-23 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN108202729B (en) * | 2016-12-20 | 2020-11-13 | 宝沃汽车（中国）有限公司 | Method and device for parking control |
| CN110884357B (en) * | 2019-11-20 | 2021-07-20 | 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 |
| CN112373443B (en) * | 2020-11-26 | 2022-12-20 | 西南林业大学 | Brake equipment and brake method for vehicle speed reducing parachute |
| CN113479160B (en) * | 2021-07-16 | 2023-01-31 | 东风柳州汽车有限公司 | Vehicle occupant collision safety protection method, device, equipment and storage medium |
| CN115285083B (en) * | 2022-09-26 | 2023-07-28 | 苏州亚太精睿传动科技股份有限公司 | Vehicle braking system and vehicle braking method |
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