CN103318174A - Vehicle anti-collision control system and control method thereof - Google Patents
Vehicle anti-collision control system and control method thereof Download PDFInfo
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- CN103318174A CN103318174A CN2012100739245A CN201210073924A CN103318174A CN 103318174 A CN103318174 A CN 103318174A CN 2012100739245 A CN2012100739245 A CN 2012100739245A CN 201210073924 A CN201210073924 A CN 201210073924A CN 103318174 A CN103318174 A CN 103318174A
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Abstract
A vehicle anti-collision control system comprises a distance detecting unit, a throttle position detecting unit, a control unit, a pre-warning unit, an oil sprayer control unit and an automatic brake unit, wherein the distance detecting unit is used for detecting the distance between a vehicle and a front barrier and/or a rear barrier; the throttle position detecting unit is used for detecting a throttle position; and the control unit is used for receiving detecting results of the distance detecting unit and the throttle position detecting unit, comparing the detecting result of the distance detecting unit and the detecting result of the throttle position detecting unit with preset values respectively, and judging whether the pre-warning unit is started to give a pre-warning prompt or whether the oil sprayer control unit is started to cut off oil and the automatic brake unit is started to brake the vehicle. The system can well judge whether the vehicle safely drives, can remind a driver to pay attention when the vehicle is in a safety critical condition, and can automatically control the oil sprayer control unit to cut off oil and the automatic brake unit to brake the vehicle when the vehicle is in a dangerous situation, so that the driver can more safely drive the vehicle.
Description
Technical field
The invention belongs to the vehicle safety control field, be specifically related to a kind of collision prevention of vehicle control system and control method thereof.
Background technology
Along with auto-industry develop rapidly, living standards of the people improve constantly, purchasing power constantly strengthens, and increasing people begins to have automobile, but the traffic accident of supervening therefrom also increases sharply.Chaufeur is easy to because carelessness is forgotten with front vehicles to remain a safe distance behind the car in front because long-duration driving, thereby in case of emergency owing to slow in reactingly having little time to brake that to cause traffic accident, its consequence be very serious for society.
Summary of the invention
The present invention for solving existing chaufeur because carelessness is easily forgotten with front vehicles remains a safe distance behind the car in front, thereby the technical matters of traffic accident appears, a kind of collision prevention of vehicle control system and control method thereof are provided.
Technical scheme of the present invention is:
A kind of collision prevention of vehicle control system, comprise for detection of vehicle front obstacle and/or rear obstacle distance apart from detecting unit, Throttle Position detecting unit for detection of Throttle Position, control unit, prewarning unit, fuel injector control unit and autobrake unit, the testing result of described control unit receiving range detecting unit and Throttle Position detecting unit, and judge whether to start prewarning unit and carry out early warning by comparing with preset value respectively apart from the testing result of the testing result of detecting unit and Throttle Position detecting unit, perhaps whether start the fuel injector control unit and carry out oil-break and whether start the autobrake unit carrying out car brakeing.
A kind of collision prevention of vehicle control method may further comprise the steps:
Step S1: detect vehicle front obstacle and/or rear obstacle apart from S0, and detect Throttle Position rate of change T0;
Step S2: the vehicle front obstacle that control unit receive to detect and/or rear obstacle apart from S0, and with the vehicle front obstacle that receives and/or rear obstacle apart from S0 and the first predeterminable range S
1, the second predeterminable range S
2Compare, wherein, S
1＜S
2, as S0＞S
2The time, be judged as the vehicle motoring condition that remains a safe distance behind the car in front, and repeat this step; As S0＜S
1The time, execution in step S5; Work as S
1≤ S0≤S
2The time, execution in step S3;
Step S3: control unit is with the Throttle Position rate of change T0 that receives and the Throttle Position rate of change T that presets
1Compare, as T0 〉=T
1The time, be judged as violent step on the accelerator, then execution in step S6; As T0＜T
1The time, execution in step S4;
Step S4: control unit starts prewarning unit, thereby chaufeur is carried out early warning, process ends;
Step S5; Control unit starts the fuel injector control unit and carries out oil-break, and startup autobrake unit carries out car brakeing, process ends;
Step S6; Control unit starts the fuel injector control unit and carries out oil-break.
Collision prevention of vehicle control system of the present invention and control method thereof, by adopting technique scheme, can judge well whether safety traffic of vehicle, and when vehicle is in the safety critical situation, can shift to an earlier date reminding driver and note, and when vehicle is in dangerous situation, can automatically control the fuel injector control unit and carry out oil-break, and the autobrake unit carries out car brakeing, thereby so that chaufeur is driven safer.
Description of drawings
The structured flowchart of the embodiment that Fig. 1 provides for collision prevention of vehicle control system of the present invention.
The structured flowchart of the preferred embodiment that Fig. 2 provides for collision prevention of vehicle control system of the present invention.
The method flow diagram of the embodiment that Fig. 3 provides for collision prevention of vehicle control method of the present invention.
The method flow diagram of the preferred embodiment that Fig. 4 provides for collision prevention of vehicle control method of the present invention.
The specific embodiment
In order to make technical matters solved by the invention, technical scheme and beneficial effect clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
For solving existing chaufeur because carelessness is easily forgotten with front vehicles remains a safe distance behind the car in front, thereby the technical matters that traffic accident occurs, the invention provides a kind of vehicle safety control system, as shown in Figure 1, a kind of collision prevention of vehicle control system, comprise for detection of vehicle front obstacle and/or rear obstacle distance apart from detecting unit 1, Throttle Position detecting unit 2(Throttle Position detecting unit 2 herein for detection of Throttle Position can be throttle position sensor), control unit 3, prewarning unit 6, fuel injector control unit 4 and autobrake unit 5, the testing result of described control unit 3 receiving range detecting units 1 and Throttle Position detecting unit 2, and by comparing with preset value respectively apart from the testing result of detecting unit 1 and the testing result of Throttle Position detecting unit 2, judge whether to start prewarning unit 6 and carry out early warning, perhaps whether start fuel injector control unit 4 and carry out oil-break and whether start autobrake unit 5 carrying out car brakeing.
This collision prevention of vehicle control system is by detecting distance and the Throttle Position rate of change of vehicle front obstacle and/or rear obstacle, and the distance by vehicle front obstacle and/or rear obstacle and Throttle Position rate of change judge whether to start prewarning unit 6 and carry out early warning, perhaps whether starting fuel injector control unit 4 carries out oil-break and whether starts autobrake unit 5 carrying out car brakeing, avoided well the traffic accident of vehicle rear-end collision, namely can judge well whether safety traffic of vehicle, and when vehicle is in the safety critical situation, can shift to an earlier date reminding driver and note, and when vehicle is in dangerous situation, can automatically control fuel injector control unit 4 and carry out oil-break, and autobrake unit 5 carries out car brakeing, thereby so that chaufeur is driven safer.
Describedly can select distance measuring sensor or ultrasonic transduter to realize apart from detecting unit 1, certainly, this also can adopt other equipment with distance measurement function apart from detecting unit 1, such as radar etc.For example, in the implementation, describedly can be realized by the ultrasonic transduter on the front bumper that is arranged at vehicle and/or the rear bumper apart from detecting unit 1, purpose is, needs according to the designer, when vehicle advances, can realize preventing the vehicle collision by the distance that is arranged on the ultrasonic transduter detection vehicle front obstacle on the front bumper; When vehicle falls back (i.e. reversing), can realize preventing the vehicle collision by the distance that is arranged on the ultrasonic transduter detection vehicle rear obstacle on the rear bumper.
It should be noted that at this, described prewarning unit 6 can note by the voice suggestion reminding driver, and for example, voice suggestion: there is obstacle in the place ahead, please in time brakes.Be understandable that, voice suggestion herein is with the vehicle example of advancing.Certainly, described prewarning unit 6 can also show to come reminding driver to note by vision, and preferably, this dual mode can adopt simultaneously, and reminding driver is noted so better.
As a kind of embodiment of autobrake unit 5, autobrake unit 5 can be comprised of stepping motor, capstan winch and drag-line, and wherein control unit 3 control walking motors draw brake pedal by capstan winch and drag-line and step on, thereby realizes the braking of vehicle.
In the implementation, described control unit 3 will be by comparing with preset value respectively apart from the testing result of detecting unit 1 and the testing result of Throttle Position detecting unit 2, judge whether to start prewarning unit 6 and carry out early warning, perhaps whether start fuel injector control unit 4 and carry out oil-break and whether start autobrake unit 5 carrying out car brakeing, specifically can be in the following way:
Testing result S and the first predeterminable range S apart from detecting unit 1 that control unit 3 will receive
1, the second predeterminable range S
2Compare,
As S＞S
2The time, be judged as the vehicle motoring condition that remains a safe distance behind the car in front;
As S＜S
1The time, control unit 3 starts fuel injector control unit 4 and carries out oil-break, and startup autobrake unit 5 carries out car brakeing;
Work as S
1≤ S≤S
2The time, control unit 3 further with the testing result of the Throttle Position detecting unit that receives by calculating Throttle Position rate of change T, and with Throttle Position rate of change T and default Throttle Position rate of change T
1Compare,
As T 〉=T
1The time, be judged as violent step on the accelerator, then control unit 3 starts fuel injector control unit 3 and carries out oil-break, and startup autobrake unit 5 carries out car brakeing;
As T＜T
1During rate, control unit 3 starts prewarning unit 6, thereby chaufeur is carried out early warning.
Wherein, S
1＜S
2, be understandable that S
1And S
2Occurrence can specifically be determined according to the vehicle safe driving index by the designer.In addition, T
1Occurrence determined through many experiments by the designer.
The structured flowchart of the preferred embodiment that Fig. 2 provides for collision prevention of vehicle control system of the present invention.As shown in Figure 2, the collision prevention of vehicle control system comprise for detection of vehicle front obstacle and/or rear obstacle distance apart from detecting unit 1, Throttle Position detecting unit 2 for detection of Throttle Position, inclination angle detection unit 7(inclination angle detection unit 7 herein for detection of the inclination of vehicle angle can be obliquity sensor), speed of a motor vehicle detecting unit 8(speed of a motor vehicle detecting unit herein for detection of car speed can be car speed sensor), control unit 3, prewarning unit 6, fuel injector control unit 4 and autobrake unit 5, the testing result of described control unit 3 receiving range detecting units 1 and Throttle Position detecting unit 2, and by comparing with preset value respectively apart from the testing result of detecting unit 1 and the testing result of Throttle Position detecting unit 2, judge whether to start prewarning unit 6 and carry out early warning, perhaps whether starting fuel injector control unit 4 carries out oil-break and whether starts autobrake unit 5 carrying out car brakeing, wherein, control unit 3 also receives the testing result of inclination angle detection unit 7 and speed of a motor vehicle detecting unit 8, and by the testing result of inclination angle detection unit 7 and the testing result of speed of a motor vehicle detecting unit 8 are compared with preset value respectively, judge whether to start fuel injector control unit 4 and carry out oil-break and whether start autobrake unit 5 carrying out car brakeing.
In the implementation, described control unit 3 is by comparing the testing result of inclination angle detection unit 7 and the testing result of speed of a motor vehicle detecting unit 8 respectively with preset value, judge whether to start fuel injector control unit 4 carry out oil-break and whether start autobrake unit 5 carry out car brakeing specifically can be in the following way:
As G＜G
1The time, judge the non-descent run of vehicle (being up-hill journey or flat pavement running);
As G 〉=G
1The time, judge the vehicle descent run, this moment, control unit 3 was further with testing result V and the preset vehicle speed V of the speed of a motor vehicle detecting unit 8 that receives
1Compare,
As V＜V
1The time, judge the vehicle safety descent run;
As V 〉=V
1The time, control unit 3 starts fuel injector control unit 4 and carries out oil-break, and startup autobrake unit 5 carries out car brakeing.
It should be noted that described default leaning angle G at this
1, and preset vehicle speed V
1All can be determined to obtain through experiment by the designer.
This embodiment further improves the technical scheme that obtains on the basis of a upper embodiment (as shown in Figure 1), therefore, this embodiment also has the danger that prevents that the vehicle descending speed is too fast except the advantage that possesses a upper embodiment, thereby has further guaranteed the safety traffic of vehicle.
For those skilled in the art being understood better and realizing the present invention, the present invention also provides corresponding collision prevention of vehicle control method, below is elaborated by specific embodiment.
A kind of collision prevention of vehicle control method as shown in Figure 3 may further comprise the steps:
Step 31: detecting vehicle front obstacle and/or rear obstacle is a concept apart from S0(S0 herein with above-mentioned testing result S apart from detecting unit), and detection Throttle Position rate of change T0(T0 and Throttle Position rate of change T herein is a concept);
Step 32: the vehicle front obstacle that control unit receive to detect and/or rear obstacle apart from S0, and with the vehicle front obstacle that receives and/or rear obstacle apart from S0 and the first predeterminable range S
1, the second predeterminable range S
2Compare (wherein, S
1＜S
2), as S0＞S
2The time, be judged as the vehicle motoring condition that remains a safe distance behind the car in front, and repeat this step; As S0＜S
1The time, execution in step 35; Work as S
1≤ S0≤S
2The time, execution in step 33;
Step 33: control unit is with the Throttle Position rate of change T0 that receives and the Throttle Position rate of change T that presets
1Compare, as T0 〉=T
1The time, be judged as violent step on the accelerator, then execution in step 36; As T0＜T
1The time, execution in step 34;
Step 34: control unit starts prewarning unit, thereby chaufeur is carried out early warning, process ends;
In the implementation, can the detecting by the distance detecting unit apart from S0 of described vehicle front obstacle and/or rear obstacle, described Throttle Position rate of change T0 can be by the detection of Throttle Position detecting unit and calculating of control unit.
The method flow diagram of the preferred embodiment that Fig. 4 provides for collision prevention of vehicle control method of the present invention, as shown in Figure 4, this embodiment further improves the technical scheme that obtains on the basis of a upper embodiment (as shown in Figure 3), namely this embodiment is except all implementation steps that comprise a upper embodiment, and is further comprising the steps of:
Step 41: detect vehicle angle of inclination G0, and detect car speed V0;
Step 42: control unit receives the inclination of vehicle angle G0 that detects, and the detection vehicle angle of inclination G0 that will receive and the leaning angle G that presets
1Compare, as G0＜G
1The time, judge the non-descent run of vehicle, and repeat this step; As G0 〉=G
1The time, judge the vehicle descent run, execution in step 43;
Step 43: control unit is with the car speed V0 and the preset vehicle speed V that receive
1Compare, as V0＜V
1The time, judge the vehicle safety descent run, and repeat this step; As V0 〉=V
1The time, execution in step 44;
Step 44: control unit starts the fuel injector control unit and carries out oil-break, and startup autobrake unit carries out car brakeing.Be understandable that, in fact this step is exactly the step 35 of a upper embodiment.
It should be noted that at this, the execution of above step 41 and the execution of step 31 concern without sequencing, and namely step 41 and step 31 can realize simultaneously.
This embodiment also has the danger that prevents that the vehicle descending speed is too fast except the advantage that possesses a upper embodiment (as shown in Figure 3).
In the implementation, described inclination of vehicle angle G0 can detect by the inclination angle detection unit, and described car speed V0 can detect by speed of a motor vehicle detecting unit.
The above only is preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. collision prevention of vehicle control system, comprise for detection of vehicle front obstacle and/or rear obstacle distance apart from detecting unit, Throttle Position detecting unit for detection of Throttle Position, control unit, prewarning unit, fuel injector control unit and autobrake unit, the testing result of described control unit receiving range detecting unit and Throttle Position detecting unit, and by comparing with preset value respectively apart from the testing result of detecting unit and the testing result of Throttle Position detecting unit, judge whether to start prewarning unit and carry out early warning, perhaps whether start the fuel injector control unit and carry out oil-break and whether start the autobrake unit carrying out car brakeing.
2. collision prevention of vehicle control system according to claim 1 is characterized in that, described is front bumper and/or the ultrasonic transduter on the rear bumper or the radar that is arranged at vehicle apart from detecting unit.
3. collision prevention of vehicle control system according to claim 1, it is characterized in that, described control unit will be by comparing with preset value respectively apart from the testing result of detecting unit and the testing result of Throttle Position detecting unit, judge whether to start prewarning unit and carry out early warning, perhaps whether start the fuel injector control unit and carry out oil-break and whether start the autobrake unit carrying out car brakeing and being specially:
Testing result S and the first predeterminable range S apart from detecting unit that control unit will receive
1, the second predeterminable range S
2Compare, wherein, S
1＜S
2,
As S＞S
2The time, be judged as the vehicle motoring condition that remains a safe distance behind the car in front;
As S＜S
1The time, control unit starts the fuel injector control unit and carries out oil-break, and startup autobrake unit carries out car brakeing;
Work as S
1≤ S≤S
2The time, control unit further with the testing result of the Throttle Position detecting unit that receives by calculating Throttle Position rate of change T, and with Throttle Position rate of change T and default Throttle Position rate of change T
1Compare,
As T 〉=T
1The time, be judged as violent step on the accelerator, then control unit starts the fuel injector control unit and carries out oil-break;
As T＜T
1The time, control unit starts prewarning unit, thereby chaufeur is carried out early warning.
4. collision prevention of vehicle control system according to claim 1, it is characterized in that, described collision prevention of vehicle control system also comprises the inclination angle detection unit for detection of the inclination of vehicle angle, and for detection of the speed of a motor vehicle detecting unit of car speed, control unit also receives the testing result of inclination angle detection unit and speed of a motor vehicle detecting unit, and by the testing result of inclination angle detection unit and the testing result of speed of a motor vehicle detecting unit are compared with preset value respectively, judge whether to start the fuel injector control unit and carry out oil-break and whether start the autobrake unit carrying out car brakeing.
5. collision prevention of vehicle control system according to claim 4, it is characterized in that, described control unit is by comparing the testing result of inclination angle detection unit and the testing result of speed of a motor vehicle detecting unit respectively with preset value, judge whether to start the fuel injector control unit and carry out oil-break and whether start the autobrake unit carrying out car brakeing and being specially:
Control unit is with the testing result G of the inclination angle detection unit of reception and default leaning angle G
1Compare,
As G＜G
1The time, judge the non-descent run of vehicle;
As G 〉=G
1The time, judge the vehicle descent run, this moment, control unit was further with testing result V and the preset vehicle speed V of the speed of a motor vehicle detecting unit that receives
1Compare,
As V＜V
1The time, judge the vehicle safety descent run;
As V 〉=V
1The time, control unit starts the fuel injector control unit and carries out oil-break, and startup autobrake unit carries out car brakeing.
6. according to claim 1 to 4 each described collision prevention of vehicle control system, it is characterized in that, described prewarning unit is noted by the voice suggestion reminding driver.
7. collision prevention of vehicle control method may further comprise the steps:
Step S1: detect vehicle front obstacle and/or rear obstacle apart from S0, and detect Throttle Position rate of change T0;
Step S2: the vehicle front obstacle that control unit receive to detect and/or rear obstacle apart from S0, and with the vehicle front obstacle that receives and/or rear obstacle apart from S0 and the first predeterminable range S
1, the second predeterminable range S
2Compare, wherein, S
1＜S
2, as S0＞S
2The time, be judged as the vehicle motoring condition that remains a safe distance behind the car in front, and repeat this step; As S0＜S
1The time, execution in step S5; Work as S
1≤ S0≤S
2The time, execution in step S3;
Step S3: control unit is with the Throttle Position rate of change T0 that receives and the Throttle Position rate of change T that presets
1Compare, as T0 〉=T
1The time, be judged as violent step on the accelerator, then execution in step S6; As T0＜T
1The time, execution in step S4;
Step S4: control unit starts prewarning unit, thereby chaufeur is carried out early warning, process ends;
Step S5; Control unit starts the fuel injector control unit and carries out oil-break, and startup autobrake unit carries out car brakeing, process ends;
Step S6; Control unit starts the fuel injector control unit and carries out oil-break.
8. collision prevention of vehicle control method according to claim 7, it is characterized in that, detecting by the distance detecting unit apart from S0 of described vehicle front obstacle and/or rear obstacle, described Throttle Position rate of change T0 is by the detection of Throttle Position detecting unit and calculating of control unit.
9. collision prevention of vehicle control method according to claim 7 is characterized in that, described collision prevention of vehicle control method is further comprising the steps of:
Steps A 1: detect vehicle angle of inclination G0, and detect car speed V0;
Steps A 2: control unit receives the inclination of vehicle angle G0 that detects, and with the inclination of vehicle angle G0 that receives and the leaning angle G that presets
1Compare, as G0＜G
1The time, judge the non-descent run of vehicle, and repeat this step; As G0 〉=G
1The time, judge the vehicle descent run, execution in step A3;
Steps A 3: control unit is with the car speed V0 and the preset vehicle speed V that receive
1Compare, as V0＜V
1The time, judge the vehicle safety descent run, and repeat this step; As V0 〉=V
1The time, execution in step A4;
Steps A 4: control unit starts the fuel injector control unit and carries out oil-break, and startup autobrake unit carries out car brakeing.
10. collision prevention of vehicle control method according to claim 9 is characterized in that, described inclination of vehicle angle G0 detects by the inclination angle detection unit, and described car speed V0 detects by speed of a motor vehicle detecting unit.
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| CN109572689A (en) * | 2017-09-25 | 2019-04-05 | 郑州宇通客车股份有限公司 | A kind of control method of finished and system based on radar cognitive disorders object |
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| CN110509919A (en) * | 2019-08-05 | 2019-11-29 | 佛山科学技术学院 | A kind of anti-overtaking-collision method |
| CN110450778A (en) * | 2019-08-05 | 2019-11-15 | 佛山科学技术学院 | A kind of rear-end device and method |
| CN110525336A (en) * | 2019-09-06 | 2019-12-03 | 长春工程学院 | A kind of anti-collision system for automobile based on ultrasound and avoiding collision |
| CN112109546A (en) * | 2020-09-21 | 2020-12-22 | 陕西重型汽车有限公司 | Freight vehicle speed control system and method |
| CN112109546B (en) * | 2020-09-21 | 2022-03-15 | 陕西重型汽车有限公司 | Freight vehicle speed control system and method |
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