CN102343858A - Automobile self-adaption head light fuzzy control method based on controller area network (CAN) bus - Google Patents
Automobile self-adaption head light fuzzy control method based on controller area network (CAN) bus Download PDFInfo
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- CN102343858A CN102343858A CN2010102421933A CN201010242193A CN102343858A CN 102343858 A CN102343858 A CN 102343858A CN 2010102421933 A CN2010102421933 A CN 2010102421933A CN 201010242193 A CN201010242193 A CN 201010242193A CN 102343858 A CN102343858 A CN 102343858A
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Abstract
The invention relates to an automobile head light control method, in particular to an automobile self-adaption head light fuzzy control method based on a controller area network (CAN) bus. The invention mainly aims at the defects that the prior art has the single and mechanical control method, cannot accurately adjust the illumination angle according to the running condition and the like, and invents the automobile self-adaption head light fuzzy control method based on the CAN bus, which can continuously, real-timely and dynamically adjust the head light according to the angle of a steering wheel and the running speed of an automobile, has high signal reception accuracy of relative transmitters, makes the illumination area reasonable, and effectively improves the running safety. The method has the main technical scheme that: an atomic fluorescence spectrometry (AFS) controller acquires the outside data, the calculation of an AFS kinematic model, a horizontal deflection model, a vertical deflection model and an illumination area is carried out on the outside data, so the control data are obtained and are executed by an execution unit, and the automobile self-adaption head light fuzzy control is realized.
Description
Technical field
The present invention relates to a kind of car headlamp control method, relate in particular to a kind of automotive self-adaptive head lamp fuzzy control method based on the CAN bus.
Background technology
The vehicle widespread usage is traditional head lamp at present; When turning night, because of light beam can not descend the visual field of driver's observation the place ahead track with wheel flutter deflection; And the chaufeur that makes the opposite send a car can't keep one's eyes open, and has buried hidden danger for night safe travels.
Along with the continuous progress of automotive electronic technology, people require also improving constantly to the illumination performance of car headlamp.Traditional car headlamp optical adjustment system slowly can not satisfy the requirement of the safety of people's night driving, traveling comfort.Many chaufeurs urgently hope automobile can equip a kind of can be whenever and wherever possible according to the irradiating angle of road direction adjustment head lamp, make the road surface obtain optimal illumination, and can prevent the Lighting System that the opposite vehicle driver dazzles the eyes.
Head lamp follow-up steering system just can realize such function; It can be according to vehicle steering angle and moving velocity; Constantly head lamp being carried out Real-time and Dynamic regulates; Adapt to current deflection angle; Keep the light direction consistent with vehicle traveling direction; To guarantee optimal illumination,, thereby strengthen the safety of driving in the dark for chaufeur provides best visibility to road ahead.Do not have on the road surface in the road conditions of (or weak) lamp or many bends, enlarge the visual field of chaufeur, remind the opposite to send a car in advance.
Summary of the invention
It is single, mechanical that the present invention is primarily aimed at the prior art control method, can not reach according to travel situations accurately to regulate shortcomings such as light angle, invented a kind of automotive self-adaptive head lamp fuzzy control method based on the CAN bus.
The above-mentioned technical matters of the utility model is able to implement through following technical scheme:
Based on the automotive self-adaptive head lamp fuzzy control method of CAN bus, its step comprises:
The AFS controller is gathered extraneous data; Extraneous data are through the computing of AFS kinematics model, horizontal direction deflection model, vertical direction deflection model, light area; Controlled data, control data is carried out through execution unit, reaches the fuzzy control of automotive self-adaptive head lamp.
As preferably, AFS system acquisition signal is from car load CAN bus, and comprises many acquisition of signals and processing.
As preferably, described extraneous data comprise: vehicle body posture, condition of road surface and external factor.
As preferably, described execution unit comprises: AFS master controller, actuating motor and power supply.
In sum, the utility model is compared with prior art and is had following advantage:
Divide the employing fuzzy control that the control result is compensated at systems control division, avoided owing to input variable too much causes the too much problem of fuzzy control rule.
System can accurately obtain the signal of related sensor, can obtain relevant vehicle speed signal, gear signal and various on-off signal from the CAN bus, and system can effectively drive actuating motor, and according to the control algorithm of setting light is regulated.
Bend test and accelerated test show, the light area of automobile that this AFS system is housed is more reasonable than the light area of the automobile that native system is not installed, and has improved travel safety greatly.
The specific embodiment
Below through specific embodiment technical scheme of the present invention is described further.
Embodiment 1: based on the automotive self-adaptive head lamp fuzzy control method of CAN bus
The AFS controller is gathered extraneous data; Extraneous data are through the computing of AFS kinematics model, horizontal direction deflection model, vertical direction deflection model, light area; Controlled data, control data is carried out through execution unit, reaches the fuzzy control of automotive self-adaptive head lamp.AFS system acquisition signal is from car load CAN bus, and comprises many acquisition of signals and processing.
Extraneous data comprise: vehicle body posture, condition of road surface and external factor.
Execution unit comprises: AFS master controller, actuating motor and power supply.
The control method effect is following:
The setting of two kinds of different initial conditions, following table 1-2, and when turning to a side in system, the optical axis of opposite side maintains original position.When wherein state 1 was steering swivel system right avertence, left side light kept original position, and when state 2 was the steering swivel system left avertence, starboard light closed and keeps original position.
Table 1 initial parameter is provided with 1
Table 2 initial parameter is provided with 2
Detect data shown in table 3-6.
Table 3 left side head lamp corner test 1
Table 4 left side head lamp corner test 2
Table 5 right side head lamp corner test 1
Table 6 right side head lamp corner test 2
Test result: the maximum error between trial value and the calculated value is 0.5 °, satisfies the operating needs of GB7454-1987 and ECER48 regulation.
When the system stand is demarcated test, draw the response time≤0.015s of this AFS system, satisfy GB and the requirement of project initial setting (the goal-setting response time :≤0.02S).
Claims (4)
1. automotive self-adaptive head lamp fuzzy control method based on the CAN bus, its step comprises:
The AFS controller is gathered extraneous data; Extraneous data are through the computing of AFS kinematics model, horizontal direction deflection model, vertical direction deflection model, light area; Controlled data, control data is carried out through execution unit, reaches the fuzzy control of automotive self-adaptive head lamp.
2. the automotive self-adaptive head lamp fuzzy control method based on the CAN bus according to claim 1 is characterized in that, AFS system acquisition signal is from car load CAN bus, and comprises many acquisition of signals and processing.
3. the automotive self-adaptive head lamp fuzzy control method based on the CAN bus according to claim 1 is characterized in that described extraneous data comprise: vehicle body posture, condition of road surface and external factor.
4. the automotive self-adaptive head lamp fuzzy control method based on the CAN bus according to claim 1 is characterized in that described execution unit comprises: AFS master controller, actuating motor and power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102421933A CN102343858A (en) | 2010-08-02 | 2010-08-02 | Automobile self-adaption head light fuzzy control method based on controller area network (CAN) bus |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102421933A CN102343858A (en) | 2010-08-02 | 2010-08-02 | Automobile self-adaption head light fuzzy control method based on controller area network (CAN) bus |
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| CN102343858A true CN102343858A (en) | 2012-02-08 |
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| CN2010102421933A Pending CN102343858A (en) | 2010-08-02 | 2010-08-02 | Automobile self-adaption head light fuzzy control method based on controller area network (CAN) bus |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102602328A (en) * | 2012-03-22 | 2012-07-25 | 武汉大学 | Intelligent car lamp control system and intelligent car lamp control method on basis of CAN (controller area network) field bus technology |
| CN104192054A (en) * | 2014-09-24 | 2014-12-10 | 奇瑞汽车股份有限公司 | Laser radar detection system based on AFS |
| CN105034931A (en) * | 2015-07-31 | 2015-11-11 | 苏州玄禾物联网科技有限公司 | Vehicle light servo control system based on fuzzy control |
-
2010
- 2010-08-02 CN CN2010102421933A patent/CN102343858A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102602328A (en) * | 2012-03-22 | 2012-07-25 | 武汉大学 | Intelligent car lamp control system and intelligent car lamp control method on basis of CAN (controller area network) field bus technology |
| CN102602328B (en) * | 2012-03-22 | 2015-05-13 | 武汉大学 | Intelligent car lamp control system and intelligent car lamp control method on basis of CAN (controller area network) field bus technology |
| CN104192054A (en) * | 2014-09-24 | 2014-12-10 | 奇瑞汽车股份有限公司 | Laser radar detection system based on AFS |
| CN105034931A (en) * | 2015-07-31 | 2015-11-11 | 苏州玄禾物联网科技有限公司 | Vehicle light servo control system based on fuzzy control |
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Application publication date: 20120208 |