CN105711482B - A kind of automatic horizontal light adjusting system and light-dimming method for car headlamp - Google Patents
A kind of automatic horizontal light adjusting system and light-dimming method for car headlamp Download PDFInfo
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- CN105711482B CN105711482B CN201610196028.6A CN201610196028A CN105711482B CN 105711482 B CN105711482 B CN 105711482B CN 201610196028 A CN201610196028 A CN 201610196028A CN 105711482 B CN105711482 B CN 105711482B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
- B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
- B60Q1/06—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle
- B60Q1/08—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle automatically
- B60Q1/10—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle automatically due to vehicle inclination, e.g. due to load distribution
- B60Q1/115—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle automatically due to vehicle inclination, e.g. due to load distribution by electric means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
- B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
- B60Q1/06—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle
- B60Q1/076—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle by electrical means including means to transmit the movements, e.g. shafts or joints
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
The present invention relates to a kind of automatic horizontal light adjusting systems and light-dimming method for car headlamp, including 1 height sensor for detecting body sway posture and 2 for controlling the d.c. motor of headlamp direction of illumination, 2 d.c. motors are provided with drive control module, the signal input part of the signal output end connection drive control module of the height sensor, the signal output end of the drive control module is drivingly connected d.c. motor, light modulation axis is mounted in the shaft of 2 d.c. motors, the end of each light modulation axis is correspondingly connected with the light modulation bracket in two headlamps of automobile respectively, for installing the light emitting source of headlamp on light modulation bracket.The present invention saves 1 controller and 1 height sensor compared to existing light adjusting system, and the d.c. motor of high-cost stepper motor low cost is substituted, system structure is simpler, and cost substantially reduces, and solving the problems, such as existing automatic light control system, structure is complicated, at high cost.
Description
Technical field
It is specifically a kind of for the automatic of car headlamp the present invention relates to car headlamp, in particular to light adjusting system
Horizontal light-adjusting system and light-dimming method.
Background technique
Car headlamp is the critical function part and regulation part of automobile, and the light of car headlamp is illuminating road ahead
Meanwhile dazzling influence can neither be generated on opposite vehicle, and have to make light-illuminating to road surface ahead, to ensure to drive
Property and safety.
However, due to the influence of automotive suspension, when the load condition of automobile changes or speed changes, vehicle
Body often changes a lot relative to the inclination angle on road surface, this will cause changing for dipped headlight illumination distances and illumination direction
Become.
When automobile load increases or accelerates, automobile will appear the phenomenon that rear portion declines, front increases, this will lead to lamp
Light is raised, so that the driver of oncoming traffic is dazzling, while be will cause driver's seat and being narrowed；And when automobile is braked suddenly
When, it may appear that front declines the phenomenon that rear portion increases, and at this moment car light light can force down, most of light-illuminating to road surface, influences
Its function and travel safety.
Therefore, regulation GB 4785-2007 is provided: when the luminous flux of headlamp is more than 2000lm, (xenon in the market is big
Lamp is more than 2000lm), vehicle must be equipped with the device for capableing of automatic horizontal light modulation.Due to the mandatory requirement of regulation, so xenon
Gas headlight is equipped with automatic horizontal light adjusting system.And halogen regenerative-cycle headlamp luminous flux is lower, and is strictly required without regulation, it is contemplated that at
This factor, so general be only equipped with hand-operating light device.
As depicted in figs. 1 and 2, existing automatic horizontal light adjusting system is by 2 height sensors, 1 controller and 2 steps
It is formed into motor.When bodywork height changes, front axle and rear axle height sensor can export different voltage signals in real time
Or pwm signal, to controller, controller can be calculated according to the output signal and vehicle body wheelbase of antero posterior axis height sensor
Then inclination angle of the vehicle body relative to initial position adjusts the irradiation height of headlamp, to compensate by control stepper motor
This variation.The system of existing this automatic horizontal light adjusting system constitutes complicated and with high costs, dimming mode also phase
Pair complexity.
Summary of the invention
The object of the present invention is to provide a kind of automatic horizontal light adjusting system for car headlamp, the light adjusting systems
1 height sensor and 2 d.c. motors are set, save 1 controller and 1 vehicle compared to existing automatic light control system
Body height sensor, and the d.c. motor of high-cost stepper motor low cost is substituted, system structure is simpler, cost
It substantially reduces, to solve the problems, such as existing automatic light control system, structure is complicated, at high cost.
To achieve the above object, the scheme of the invention is: a kind of automatic horizontal light adjusting system for car headlamp, institute
The automatic horizontal light adjusting system stated includes that 1 height sensor for being used to detect body sway posture and 2 are used to control
The d.c. motor of headlamp direction of illumination, 2 d.c. motors are provided with drive control module, and the bodywork height passes
The signal input part of the signal output end connection drive control module of sensor, the signal output end driving of the drive control module
Connect d.c. motor, be mounted on light modulation axis in the shaft of 2 d.c. motors, the end of each light modulation axis respectively with vapour
Light modulation bracket in two headlamps of vehicle corresponds to mechanical connection, is used to install the light emitting source of headlamp on the light modulation bracket；
Inclination conditions of the height sensor for real-time detection vehicle body with respect to road surface, and send corresponding
For pwm signal to drive control module, pwm signal is converted voltage signal by the drive control module, and with inside motor
Voltage value be compared, when drive control module detect height sensor input voltage signal and d.c. motor in
When the voltage value in portion is variant, work order driving d.c. motor rotation is just issued, the flexible drive by dimming axis dims branch
Frame swing, so as to adjust light-illuminating direction, until drive control module detects the electricity of height sensor input
When pressing signal consistent with the voltage value inside motor, d.c. motor stops working, and light modulation is completed.
Further, the automatic horizontal light adjusting system according to the present invention for car headlamp, 2 direct currents
The shaft of motor connects light modulation axis by transmission mechanism, the light modulation bracket in the end connection headlamp of the light modulation axis.
Further, the automatic horizontal light adjusting system according to the present invention for car headlamp, the driving
Control module includes single-chip microcontroller, light position control chip and potentiometer, and the signal input part connection vehicle body of the single-chip microcontroller is high
Sensor is spent, the signal output end connection light position of the single-chip microcontroller controls chip, the control of the light position control chip
Output end control connection d.c. motor processed, the sliding block of one end connection potentiometer of the light modulation axis, the other end of the light modulation axis
Connection light modulation bracket.
Further, the automatic horizontal light adjusting system according to the present invention for car headlamp, the vehicle body are high
One end of degree sensor is fixed on the component that automobile chassis suspension and vehicle body keep height constant, and the other end is fixed on automobile bottom
Disk suspension and vehicle body have on the component of relative motion.
Further, the automatic horizontal light adjusting system according to the present invention for car headlamp, the vehicle body
Height sensor is installed on automobile hind axle position.
Further, the automatic horizontal light adjusting system according to the present invention for car headlamp, the vehicle body
Height sensor is installed on automobile front axle position.
The object of the invention is also to provide a kind of automatic horizontal light-dimming method, the light-dimming method passes through 1 vehicle body
The irradiation height of car headlamp is adjusted in height sensor and 2 d.c. motors, compares existing automatic light control system section
1 controller and 1 height sensor have been saved, and the d.c. motor of high-cost stepper motor low cost has been substituted,
Light modulation system structure used is simpler, and cost substantially reduces, and light-dimming method is also relatively easy, to solve existing light modulation side
Structure is complicated, at high cost for the light adjusting system that method uses, the relative complex problem of dimming mode.
To achieve the above object, the technical solution of the present invention is as follows: a kind of light modulation using above-mentioned automatic horizontal light adjusting system
Method, steps are as follows for the light-dimming method:
(1) when the drive control module setting bodywork height variation of direct current generator, the difference of height sensor swing arm
The corresponding voltage signal of rotational angle,
(2) height sensor real-time detection bodywork height changes, and sends pwm signal to drive control module, institute
The drive control module stated converts voltage signal for pwm signal according to the setting of step (1)；
(3) drive control module determines the light modulation angle for needing to adjust according to the voltage signal received, and will be described
Voltage signal is compared with the voltage inside d.c. motor, is obtained in the input voltage and d.c. motor of height sensor
The voltage difference of portion's voltage；
(4) if the voltage difference is not equal to 0, drive control module sends work order, and driving d.c. motor turns
It is dynamic, the irradiation height of headlamp is adjusted, and enter step (5)；If the voltage difference is equal to 0, without carrying out
Dimming operation；
(5) if detecting, the input voltage signal of height sensor is become larger, and drive control module driving is adjusted
Optical axis elongation, the irradiation light of headlamp is adjusted downwards according to the light modulation angle that step (3) determine；If height sensor
Input voltage signal gradually becomes smaller, and drive control module driving light modulation axis is shunk, and the light modulation angle determined according to step (3) is upward
Adjust the irradiation light of headlamp；When drive control module detects that the voltage difference is 0, control d.c. motor stops
Rotation, light modulation are completed.
Further, light-dimming method according to the present invention in the step (3), dims the determination method of angle
Are as follows:
A=arctg (x/L)
Wherein, a is light modulation angle, that is, the headlamp irradiating angle for needing to adjust；
X is light modulation axis stroke, is determined by the voltage signal of height sensor output；
L is light modulation radius, is setting value.
Further, light-dimming method according to the present invention, vehicle is under any state, the angle of oscillation of sensor swing arm
The output voltage for spending corresponding height sensor is linear relationship, and the swing angle of sensor swing arm is corresponding
Height sensor output voltage relationship, pass through programming obtain.
Further, light-dimming method according to the present invention, in the step (5), when automobile is past from complete vehicle curb condition
When the minimum movement of overall height, the input voltage of sensor swing arm clockwise oscillation, corresponding height sensor is become larger；Work as vapour
When vehicle is from complete vehicle curb condition toward overall height highest movement, respective sensor swing arm counter-clockwise swing, corresponding height sensor it is defeated
Enter voltage to gradually become smaller.
It is that the present invention reaches the utility model has the advantages that automatic horizontal light adjusting system of the invention saves 1 compared to existing light adjusting system
A controller and 1 height sensor, and 2 high-cost stepper motors have been changed to 2 inexpensive d.c. motors, in letter
While having changed entire light adjusting system, the cost of automatic horizontal light adjusting system, corresponding dimming process are also greatly reduced
Relative ease.
Detailed description of the invention
Fig. 1 is scheme of installation of the existing automatic horizontal light adjusting system on vehicle body；
Fig. 2 is the structural schematic diagram of existing automatic horizontal light adjusting system；
Fig. 3 is the structural schematic diagram of automatic horizontal light adjusting system of the invention；
Fig. 4 is the structure principle chart of automatic horizontal light adjusting system of the present invention；
Fig. 5 is the schematic diagram that automatic horizontal light adjusting system light of the present invention is adjusted downwards；
Fig. 6 is the schematic diagram that automatic horizontal light adjusting system light of the present invention is adjusted up；
Fig. 7 is the swing angle of sensor swing arm and the relation schematic diagram of height sensor output voltage；
Fig. 8 is signal voltage ratio-light modulation axis stroke performance plot.
In figure, 1 is height sensor, and 2 be stepper motor, and 3 be controller, and 4 be d.c. motor, and 5 be to dim axis, 6
To dim bracket, 7 be light emitting source.
Specific embodiment
The present invention is described in further detail with specific embodiment with reference to the accompanying drawing.
Automatic horizontal light adjusting system embodiment:
As shown in figure 3, automatic horizontal light adjusting system of the present invention includes 1 for detecting the vehicle of bodywork height variation
Body height sensor and 2 are for controlling the d.c. motor of headlamp direction of illumination.
One end of height sensor is fixed on the component that automobile chassis suspension and vehicle body keep height constant, another
End, which is fixed on automobile chassis suspension and vehicle body, to be had on the component of relative motion, when bodywork height changes, sensor swing arm
The deflection of angle can occur therewith, sensor swing arm can be corresponded in different angle exports different voltage signals.
In a preferred embodiment, height sensor is installed on shaft position after vehicle body, in other embodiments, vehicle body
Height sensor also can be set in vehicle body front axle, but dimming effect is not so good as to be installed on rear axle.Because rear axle loadings are to vehicle body
Posture is affected, and rear stall people and luggage case are fully loaded to make vehicle body rear axle height sharp fall, causes light obvious
Irradiation upwards, and front-seat seat people, influence front axle bodywork height little.
As shown in figure 4, the dotted arrow in figure indicates that mechanical connection, solid line indicate electrical connection.2 d.c. motors pass through each
From drive control module driving, drive control module includes single-chip microcontroller, light position control chip and potentiometer, the vehicle body
The signal input part of the signal output end connection single-chip microcontroller of height sensor, the signal output end of the single-chip microcontroller connect light position
Control chip is set, the signal output end of the light position control chip is drivingly connected d.c. motor, 2 d.c. motors
Shaft light modulation axis is connected by transmission mechanism respectively, each one end for dimming axis is connected respectively the light modulation in two headlamps
The sliding block of bracket, one end and potentiometer for dimming axis connection d.c. motor connects.
As shown in Figure 5 and Figure 6, it dims for installing the light emitting source of headlamp on bracket, d.c. motor dims axis in driving
In flexible process, with the light modulation bracket movement in vehicle lights, when dimming elongate axis, light modulation bracket is pushed forward, adjusts light
Line is aimed downwardly (as shown in Figure 5)；When dimming axis contraction, light modulation bracket is pulled back, adjustment light irradiates (such as Fig. 6 upwards
It is shown).
The course of work of automatic light control system of the present invention: the variation of height sensor real-time detection bodywork height, and root
According to the different swing angles of sensor swing arm, different pwm signals are exported in real time to single-chip microcontroller, single-chip microcontroller is according to sensor swing arm
Pwm signal is converted voltage signal by swing angle；
The input voltage of monolithic machine testing height sensor and the voltage difference inside motor, when the voltage difference not
When equal to 0, single-chip microcontroller sends dim signal and controls chip to light position；
The light position control chip determines light modulation angle according to the voltage signal that height sensor inputs, and
Work order driving d.c. motor rotation is issued, it is flexible up and down according to determining light modulation angle driving light modulation axis, drive light modulation branch
Frame is dimmed, while driving the sliding block of potentiometer mobile, make motor builtin voltage equilibrium valve gradually with the voltage signal of input
It draws close, when the two is consistent, d.c. motor stops working, and light modulation is completed.
Angle is dimmed to determine by following methods:
A=arctg (x/L)
A is light modulation angle, that is, the headlamp irradiating angle for needing to adjust；
L is light modulation radius, is setting value；
X is light modulation axis stroke, and light modulation axis stroke is determined by the voltage signal that height sensor exports.
Light adjusting system of the present invention is in dimming process, when single-chip microcontroller detects the input voltage signal of height sensor
When becoming larger, then light modulation elongate axis is driven, the light-illuminating direction of headlamp is adjusted downwards；When single-chip microcontroller detects bodywork height
When the input voltage signal of sensor becomes smaller, then drives light modulation axis to shrink, the light-illuminating direction of headlamp is adjusted up.
Automatic horizontal light adjusting system of the invention saves 1 controller and 1 highly sensing compared to existing light adjusting system
Device, and 2 high-cost stepper motors have been changed to 2 inexpensive d.c. motors, simplifying the same of entire light adjusting system
When, also greatly reduce the cost of automatic horizontal light adjusting system, corresponding dimming process also relative ease.
Light-dimming method embodiment:
Detailed process is as follows for the present embodiment light-dimming method:
1, when bodywork height changes, the deflection of angle can occur therewith for sensor swing arm, and sensor swing arm is not
Different voltage signals is exported with that can correspond to when angle.When automobile movement minimum toward overall height from complete vehicle curb condition, sensor swing arm
The input voltage of clockwise oscillation, corresponding height sensor becomes larger；When automobile is transported from complete vehicle curb condition toward overall height highest
When dynamic, the input voltage of respective sensor swing arm counter-clockwise swing, corresponding height sensor is gradually become smaller.
When being changed by the drive control module setting bodywork height of direct current generator, the different rotational angles pair of sensor swing arm
The relationship of the voltage signal answered, the swing angle and height sensor output voltage of sensor swing arm is as shown in Figure 7.Fig. 7
In specific angle of oscillation angle value, can arbitrarily be chosen by fever writes, the swing angle of sensor swing arm and bodywork height sense
Output voltage relationship, acquisition can be arbitrarily programmed by fever writes.
2, in car running process, changed by height sensor real-time detection bodywork height, and send pwm signal
To drive control module, sensor swing arm swing angle and vehicle body height that the drive control module is set according to step (1)
The relationship for spending sensor output voltage, converts voltage signal for pwm signal.
3, drive control module determines the light modulation angle for needing to adjust according to the voltage signal received, and will be described
Voltage signal is compared with the voltage inside d.c. motor, is obtained in the input voltage and d.c. motor of height sensor
The voltage difference of portion's voltage.
Wherein, light modulation angle is determined by following methods:
A=arctg (x/L)
A is light modulation angle, that is, the headlamp irradiating angle for needing to adjust；
L is light modulation radius, is setting value；
X is light modulation axis stroke, and light modulation axis stroke is determined by the voltage signal that height sensor exports.
As shown in figure 8, signal voltage ratio=height sensor input voltage/d.c. motor builtin voltage × 100%,
Effective operation interval is range of the signal voltage than 20%~90%, 10% light modulation of the signal voltage than corresponding 0.8mm in figure
Axis stroke, in the present embodiment, Fig. 8 is the signal voltage ratio-light modulation axis stroke characteristic figure for being initial 0 position with 90%, at other
In embodiment, initial 0 position can also be chosen at other signal voltages than upper.
4, if the voltage difference of the input voltage of height sensor and d.c. motor builtin voltage is equal to 0, it is not necessarily to
Carry out Dimming operation.
5, if the voltage difference of the input voltage of height sensor and d.c. motor builtin voltage is not 0, drive
Control module sends work order, and driving d.c. motor rotation is adjusted the irradiation height of headlamp, specific adjusting method
It is as follows:
If detecting, the input voltage signal of height sensor is become larger, drive control module driving light modulation axis
Elongation adjusts downwards the irradiation light of headlamp according to the light modulation angle that step (3) determine；If the input of height sensor
Voltage signal gradually becomes smaller, and drive control module driving light modulation axis is shunk, and is adjusted up according to the light modulation angle that step (3) determine
The irradiation light of headlamp.
When drive control module detects that the voltage difference is 0, control d.c. motor stops operating, and has dimmed
At.
Light-dimming method of the invention passes through the irradiation of 1 height sensor and 2 d.c. motors to car headlamp
Height is adjusted, and saves 1 controller and 1 height sensor compared to existing automatic light control system, and by height at
The d.c. motor substitution of this stepper motor low cost, dim used in system structure it is simpler, cost substantially reduces, tune
Light mode is also relatively easy.
Claims (9)
1. a kind of automatic horizontal light adjusting system for car headlamp, it is characterised in that: the automatic horizontal light adjusting system
Including 1 height sensor for detecting bodywork height variation and 2 for controlling the direct current of headlamp direction of illumination
Motor, one end of the height sensor are fixed on the component that automobile chassis suspension and vehicle body keep height constant, separately
One end, which is fixed on automobile chassis suspension and vehicle body, to be had on the component of relative motion；2 d.c. motors are provided with driving
Control module；
The signal input part of the signal output end connection drive control module of the height sensor, the drive control mould
The signal output end of block is drivingly connected d.c. motor, is mounted on light modulation axis, each tune in the shaft of 2 d.c. motors
The end of optical axis is corresponding with the light modulation bracket in two headlamps of automobile respectively to be mechanically connected, for pacifying on the light modulation bracket
Fill the light emitting source of headlamp；
The height sensor changes for real-time detection bodywork height and according to the swing arm of height sensor
Different swing angles send corresponding pwm signal to drive control module, and the drive control module converts pwm signal
It for voltage signal, and is compared with the voltage value inside motor, when drive control module detects that height sensor is defeated
When the voltage value inside voltage signal and d.c. motor entered is variant, work order driving d.c. motor rotation is just issued, is led to
The flexible drive of toning optical axis dims bracket swing, so as to adjust light-illuminating direction, until drive control module detects
When the voltage signal inputted to height sensor is consistent with the voltage value inside motor, d.c. motor stops working, light modulation
It completes.
2. the automatic horizontal light adjusting system according to claim 1 for car headlamp, which is characterized in that described 2
The shaft of d.c. motor connects light modulation axis by transmission mechanism, the light modulation branch in the end connection headlamp of the light modulation axis
Frame.
3. the automatic horizontal light adjusting system according to claim 2 for car headlamp, which is characterized in that the drive
Dynamic control module includes single-chip microcontroller, light position control chip and potentiometer, and the signal input part of the single-chip microcontroller connects vehicle body
Height sensor, the signal output end connection light position of the single-chip microcontroller control chip, the light position control chip
Control output end control connection d.c. motor, the sliding block of one end connection potentiometer of the light modulation axis are described to dim the another of axis
End connection light modulation bracket.
4. the automatic horizontal light adjusting system according to claim 1 for car headlamp, which is characterized in that the vehicle
Body height sensor is installed on automobile hind axle position.
5. the automatic horizontal light adjusting system according to claim 1 for car headlamp, which is characterized in that the vehicle
Body height sensor is installed on automobile front axle position.
6. a kind of light-dimming method using automatic horizontal light adjusting system as described in claim 1, it is characterised in that: the light modulation
Method and step is as follows:
(1) when the drive control module setting bodywork height variation of direct current generator, the different rotations of height sensor swing arm
The corresponding voltage signal of angle,
(2) height sensor real-time detection bodywork height changes, and sends pwm signal to drive control module, described
Drive control module converts voltage signal for pwm signal according to the setting of step (1)；
(3) drive control module is according to the voltage signal received, determines the light modulation angle for needing to adjust, and by the voltage
Signal is compared with the voltage inside d.c. motor, obtains electricity inside the input voltage and d.c. motor of height sensor
The voltage difference of pressure；
(4) if the voltage difference is not equal to 0, drive control module sends work order, and driving d.c. motor rotation is right
The irradiation height of headlamp is adjusted, and enters step (5)；If the voltage difference is equal to 0, without carrying out light modulation behaviour
Make；
(5) if detecting, the input voltage signal of height sensor is become larger, drive control module driving light modulation axis
Elongation adjusts downwards the direction of illumination of headlamp according to the light modulation angle that step (3) determine；If the input of height sensor
Voltage signal gradually becomes smaller, and drive control module driving light modulation axis is shunk, and is adjusted up according to the light modulation angle that step (3) determine
The direction of illumination of headlamp；When drive control module detects that the voltage difference is 0, control d.c. motor stops turning
Dynamic, light modulation is completed.
7. light-dimming method according to claim 6, which is characterized in that in the step (3), dim the determination side of angle
Method are as follows:
A=arctg (x/L)
Wherein, a is light modulation angle, that is, the headlamp irradiating angle for needing to adjust；
X is light modulation axis stroke, is determined by the voltage signal of height sensor output；
L is light modulation radius, is setting value.
8. light-dimming method according to claim 6, which is characterized in that vehicle is under any state, the pendulum of sensor swing arm
The output voltage of the corresponding height sensor of dynamic angle is linear relationship, and the swing angle of sensor swing arm and its
The relationship of the output voltage of corresponding height sensor is obtained by programming.
9. light-dimming method according to claim 8, which is characterized in that in the step (5), when automobile is from complete vehicle curb condition
When movement minimum toward overall height, the input voltage of sensor swing arm clockwise oscillation, corresponding height sensor is become larger；When
When automobile is from complete vehicle curb condition toward overall height highest movement, respective sensor swing arm counter-clockwise swing, corresponding height sensor
Input voltage gradually becomes smaller.
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| CN201610196028.6A CN105711482B (en) | 2016-03-31 | 2016-03-31 | A kind of automatic horizontal light adjusting system and light-dimming method for car headlamp |
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| CN201610196028.6A CN105711482B (en) | 2016-03-31 | 2016-03-31 | A kind of automatic horizontal light adjusting system and light-dimming method for car headlamp |
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| CN105711482B true CN105711482B (en) | 2019-03-22 |
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| CN107444248A (en) * | 2017-06-30 | 2017-12-08 | 傅峰峰 | Method, storage medium and the electronic equipment that a kind of anti-shake car light, anti-car light rock |
| CN110077312A (en) * | 2019-04-30 | 2019-08-02 | 国能新能源汽车有限责任公司 | A kind of car bulb level height regulating system |
| CN111422126A (en) * | 2020-05-13 | 2020-07-17 | 徐州徐工汽车制造有限公司 | Electric adjusting device for single dipped headlight and automobile |
| CN112721793A (en) * | 2020-12-29 | 2021-04-30 | 江苏鑫蕴模塑科技有限公司 | Compensation method for light attenuation of automobile headlamp |
| CN115675265B (en) * | 2022-12-30 | 2023-03-31 | 江苏华骋科技有限公司 | Automatic adjusting system and adjusting method for automobile headlamp |
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| CN1241503A (en) * | 1998-05-25 | 2000-01-19 | 株式会社小糸制作所 | Front-view lamp for vehicle |
| CN1413858A (en) * | 2001-10-24 | 2003-04-30 | 株式会社小糸制作所 | Automatic regulation device for headlight of vehicle |
| CN1862087A (en) * | 2005-05-12 | 2006-11-15 | 株式会社小糸制作所 | Lamp for vehicle |
| CN102862507A (en) * | 2011-07-04 | 2013-01-09 | 三菱自动车工业株式会社 | Optical axis controller of automotive headlamp |
-
2016
- 2016-03-31 CN CN201610196028.6A patent/CN105711482B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1241503A (en) * | 1998-05-25 | 2000-01-19 | 株式会社小糸制作所 | Front-view lamp for vehicle |
| CN1413858A (en) * | 2001-10-24 | 2003-04-30 | 株式会社小糸制作所 | Automatic regulation device for headlight of vehicle |
| CN1862087A (en) * | 2005-05-12 | 2006-11-15 | 株式会社小糸制作所 | Lamp for vehicle |
| CN102862507A (en) * | 2011-07-04 | 2013-01-09 | 三菱自动车工业株式会社 | Optical axis controller of automotive headlamp |
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| CN105711482A (en) | 2016-06-29 |
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Address after: 201800 Yecheng Road, Jiading District, Jiading District, Shanghai Patentee after: Hua Yu vision technology (Shanghai) Co., Ltd. Address before: 201800 Yecheng Road, Jiading District, Jiading District, Shanghai Patentee before: Xiaoxi Car Lights Co., Ltd., Shanghai |
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