CN104742796B - A kind of automatic light controller - Google Patents
A kind of automatic light controller Download PDFInfo
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- CN104742796B CN104742796B CN201510112889.7A CN201510112889A CN104742796B CN 104742796 B CN104742796 B CN 104742796B CN 201510112889 A CN201510112889 A CN 201510112889A CN 104742796 B CN104742796 B CN 104742796B
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Abstract
A kind of automatic light controller, the automatic light controller includes control circuit, light sensor, Light indicator, 3-axis acceleration sensor U3, GES, combine light signal, drive circuit, dipped headlight, high beam etc., the control circuit includes the external power source input circuit being connected with single-chip microcomputer U4 inputs, crystal oscillating circuit, download program interface circuit, the light sensor, Light indicator, GES, combine the output end connection single-chip microcomputer U4 of light signal input, the output end of the 3-axis acceleration sensor U3 connects the SPI interface of single-chip microcomputer, the control circuit output end connects dipped headlight by drive circuit, high beam.The present invention can automatically control lighting or closing for car headlamp according to the change of ambient light intensity, it is to avoid the potential safety hazard that frequent darkening or not darkening are brought to safe driving, ensure the safety of driving at night.
Description
Technical field
The present invention relates to automobile automation field, specifically a kind of automatic light controller.
Background technology
At present, car headlamp mode of operation is manual control, and during vehicle night meeting, other side can be run into often
Carry out car by the normally opened situation of high beam, because high beam can make to producing moment blinding, other side driver on Driver Vision
Front road conditions are not seen, very big hidden peril of accident is there is；When front vehicle opens high beam, the inside and outside backsight of front truck
Large area halation occurs in mirror, front truck driver can be influenceed from backsight sem observation rear situation.During driving at night climb and fall, phase
To and row car bulb and climb and fall when road surface reflected light can influence the vision of driver, if will result in very much driving by force
Member sees not table road ahead, so needing the distance-light of driver's manual switching automobile in time, part depot is in vehicle of controlling oneself
Middle outfit headlamp automatic control system, automatically controlling according to remote/dipped headlight switching before carrying out, most of costs are higher, and
Function is relatively simple.
The content of the invention
For above problems of the prior art, the invention provides a kind of automatic light controller.
The present invention is achieved by the following technical solutions：
A kind of automatic light controller, the automatic light controller includes control circuit, light sensor, light sensing
Device, 3-axis acceleration sensor U3, GES, combination light signal, drive circuit, dipped headlight, high beam etc., the control
Circuit includes the external power source input circuit, crystal oscillating circuit, download program interface circuit being connected with single-chip microcomputer U4 inputs, described
Light sensor, Light indicator, GES, the output end connection single-chip microcomputer U4 of combination light signal input, it is described
3-axis acceleration sensor U3 output end connects the SPI interface of single-chip microcomputer, and the control circuit output end passes through drive circuit
Connect dipped headlight, high beam.
The automatic light controller can gather in real time light sensor, Light indicator, 3-axis acceleration sensor U3,
GES, combination light signal, judge the transport condition of current ambient light illumination and automobile, and being switched on or off in good time
The dipped headlight of automobile, high beam output.
Described light sensor, Light indicator are connected with control circuit, pass through light sensor or light is sensed
The light intensity change of device, obtains a voltage signal, is input to automatic light controller, automatic light controller is according to sampled signal
Input amplitude, judge the suffered external environment illumination situation of Current vehicle.
Described GES, 3-axis acceleration sensor U3 are connected with control circuit, realize to vehicle climbable gradient
Detection in real time.
Described combination light signal is connected with control circuit, the control circuit by drive circuit and dipped headlight,
High beam is connected, under the pattern of automatic light controller automatic running, can be realized to dipped headlight, far by stacked switch
The control of light lamp output state.
The single-chip microcomputer U4 is using the serial 8-bit microprocessors of Freescale DZ60.
The automatic light controller comprises the following steps：
In day driving, it is stronger to be installed on the light intensity that the anterior light sensor of instrument desk collects, and inputs to control
One voltage signal of circuit, control circuit has also collected GES simultaneously, to carry out transport condition identification, and automobile, which enters, satisfies
Dimmed in driver's cabin behind road, the input voltage step-down of light sensor, lamp dimmer automatically opens up the dipped headlight of automobile, entered
The traveling illumination of row tunnel.After garage rolls tunnel away from, light intensity is recovered, and lamp dimmer closes dipped headlight output automatically；
When the light that light sensor is collected becomes weak signal and the access of driving at night side-marker lamp signal, automatic light control
Device is identified as driving at night state, in the case of having street lighting in urban district, and the Light indicator installed in front part of vehicle is detected
To have street lamp light signal input, automatic light controller can automatic closing automobile high beam, be switched to dipped headlight illumination condition；
In night field driving, Light indicator can't detect light intensity signal, and automatic light controller automatically turns on remote
Light lamp, when there is light-illuminating in traveling front, automatic light controller detects the headlamp of opposite vehicle or the taillight of front truck
When, dipped headlight illumination condition is automatically switched to, meeting automatically switches to high beam state after terminating；
In driving at night, control circuit can gather 3-axis acceleration sensor U3 signal in real time, be converted into current
Grade signal, when automatic light controller judges that automobile is in upward slope state, automatically switches to dipped headlight state, at automobile
When descending state, automatic light controller automatically switches to high beam state.
Advantages of the present invention：
From above-mentioned steps as can be seen that the present invention is using two groups of light-intensity test sensors, light sensor and light sensing
Device, wherein light sensor are one and are installed on the anterior light intensity detection circuit of instrument desk, for detecting the illumination in driver's cabin
Degree, another street lamp optical sensor is installed on front part of vehicle, and the road light and front opposite vehicle for detecting vehicle front shine
Shot-light light is detected, is controlled circuit according to the input signal of this two sensors, it can be determined that go out the light conditions of Current vehicle, is examined
High precision is surveyed, condition adjudgement is accurate.The input of GES, makes automatic light controller not only judge the illumination feelings of vehicle
Condition, also realizes the motion state detection of vehicle, under the running status of vehicle, 3-axis acceleration sensor U3 is defeated in real time simultaneously
Go out the acceleration in tri- directions of X, Y, Z, resolution is high, the dynamic acceleration that vehicle movement is produced is can detect, by detecting each axle
On acceleration, calculate the inclination angle of vehicle indirectly, judge to be to be in climbing, descending state in flat pavement running.
When driving, automatic light controller passes through to driving states and light intensity change automatically switching high beam and dipped headlight
Output state.The driving intensity of driver is alleviated, the safety of driving has been ensured.
Brief description of the drawings
Fig. 1 is a kind of overall structure figure of automatic light controller of the invention；
Fig. 2 is control circuit and 3-axis acceleration sensor U3 circuit connection diagrams；
Fig. 3 is Light indicator circuit connection diagram；
Fig. 4 is light sensor circuit connection diagram；
Fig. 5 is section driving circuit schematic diagram.
Embodiment
The present invention is described in further details below in conjunction with the drawings and specific embodiments.
As shown in Figure 1 or 2, a kind of automatic light controller, the automatic light controller includes control circuit, photosensitive
It is sensor, Light indicator, 3-axis acceleration sensor U3, GES, combination light signal, drive circuit, dipped headlight, remote
Light lamp etc., external power source input circuit that the control circuit includes being connected with single-chip microcomputer U4 inputs, crystal oscillating circuit, under program
Carry interface circuit, the light sensor, Light indicator, GES, the output end connection single-chip microcomputer for combining light signal
U4 input, the 3-axis acceleration sensor U3 is connected by SPI interface with single-chip microcomputer U4, described to control the defeated of circuit
Go out end and dipped headlight, high beam are connected by drive circuit.
The single-chip microcomputer U4 can gather light sensor, light in real time using the serial 8-bit microprocessors of Freescale DZ60
Sensor, 3-axis acceleration sensor U3, GES, combination light signal, you can realize voltage signal acquisition, stacked switch
Signal acquisition, GES collection, 3-axis acceleration sensor U3 intelligence samples, judge current ambient light illumination and automobile
Transport condition, and the output of the dipped headlight for being switched on or off automobile, high beam in good time.
As shown in figure 3, the Light indicator includes：
One phototriode Q1, phototriode Q1 colelctor electrode connects a reference voltage, and emitter stage passes through one point
Piezoresistance R1 is grounded；
One voltage follower U1B, the voltage follower U1B is connected in parallel on the emitter stage and partial pressure of the phototriode Q1
Between resistance R1；
One voltage amplifier U1A, voltage amplifier U1A positive input terminal by a resistance R2 and the voltage with
Connected with device U1B output end, the output end of the voltage amplifier U1A connects the Freescale single-chip microcomputer U4 inputs.
The signal sampling element of Light indicator is a phototriode Q1, and Light indicator is installed on before automobile
Portion, phototriode Q1 collector current light radiation control, when phototriode Q1 is by light irradiation, its internal resistance
Generation significant changes, the resistance of this change causes the voltage on the divider resistance R1 of sample circuit to change, and exterior light is according to strong
Degree is stronger, and the voltage on R1 is higher, and this voltage is sent to voltage amplifier U1A and be amplified, finally by voltage follower U1B
Obtain the readily identified change voltages of a Freescale single-chip microcomputer U4.
As shown in figure 4, the light sensor includes：
One photo resistance R5, photo resistance R5 one end connects a reference voltage, and the other end passes through a sampling resistor
R6 is grounded；
One voltage follower U2B, the voltage follower U2B be connected in parallel on the photo resistance R5 and sampling resistor R6 it
Between；
One voltage amplifier U2A, voltage amplifier U2A positive input terminal by a resistance R7 and the voltage with
Connected with device U2B output end, the output end of the voltage amplifier U2A connects the Freescale single-chip microcomputer U4 inputs.
The circuit of light sensor is identical with the sampling principle of Light indicator, and light sensor is installed on automobile cab
The front portion of interior instrument desk, when in driver's cabin by light irradiation, photo resistance R5 resistance changes, on sampling resistor R6
A branch pressure voltage can be obtained, exterior light shines stronger, and the voltage on R6 is higher, and this voltage is sent to electricity by voltage follower U2B
Pressure amplifier U2A is amplified, and finally gives the readily identified change voltages of a Freescale single-chip microcomputer U4.
Described drive circuit is made up of 4 independent driver elements, and its input is connected to the output port of single-chip microcomputer,
Output end is connected to dipped headlight or high beam, is illustrated in figure 5 the drive circuit of left dipped headlight, single-chip microcomputer U4 left dipped headlight control
Output port OUTA processed is connected to intelligent control circuit D1 input by resistance R30, when OUTA is high level, intelligence
Control circuit D1 output port has 24V voltage outputs, and external dipped headlight is lighted, when OUTA is low level, Based Intelligent Control
The voltage of circuit D1 output port is 0, and external dipped beam is closed.The output state of external lights can also be by D1 ST
Pin feeds back to single-chip microcomputer U4, is easy to single-chip microcomputer U4 to judge whether current output state is normal.Other three tunnels of drive circuit
Output is identical with the output of left dipped headlight, and the control output end mouth of the right dipped headlight of single-chip microcomputer, left high beam and right high beam
Difference OUTB, OUTC, OUTD.
As shown in Fig. 2 3-axis acceleration sensor U3 is a three axle digital accelerometers, resolution is high, measurement range
Reachable ± 16g, it is conducted interviews with Freescale single-chip microcomputer U4 by SPI interface, and 3-axis acceleration sensor U3 can be measured
The acceleration magnitude of each axle, because acceleration can not directly represent the inclination angle of object, it is necessary to can just be inclined by formula conversion
Angle value, the control circuit level comprising 3-axis acceleration sensor U3 is installed on automotive interior by us, when automobile and ground level
When producing the angle of pitch, 3-axis acceleration sensor U3 can obtain a coordinate system, and coordinate system is projected to the plane of XZ axles, can
To obtain a plane coordinate system, from there through calculating, the static acceleration and the angle of pitch on each axle are obtained.Automatic light is controlled
Device can determine whether the running status of vehicle, such as flat pavement running by the change of current vehicle pitch rate, climbing, descending etc..
Described light sensor, Light indicator are connected with control circuit, pass through light sensor or light is sensed
The light intensity change of device, obtains a voltage signal, is input to automatic light controller, automatic light controller is according to sampled signal
Input amplitude, judge the suffered external environment illumination situation of Current vehicle.
Described GES, 3-axis acceleration sensor U3 are connected with control circuit, realize to vehicle climbable gradient
Detection in real time.
Described combination light signal, drive circuit are connected with control circuit, in automatic light controller automatic running
Pattern under, the priority acccess control to dipped headlight, high beam output state can be realized by stacked switch.
The automatic light controller comprises the following steps：
In day driving, it is stronger to be installed on the light intensity that the anterior light sensor of instrument desk collects, and inputs to control
One voltage signal of circuit, control circuit has also collected GES simultaneously, to carry out transport condition identification, and automobile, which enters, satisfies
Dimmed in driver's cabin behind road, the input voltage step-down of light sensor, automatic light controller automatically opens up the dipped beam of automobile
Lamp, carries out tunnel traveling illumination.After garage rolls tunnel away from, light intensity is recovered, and automatic light controller closes dipped headlight automatically
Output；
When signal weaker and driving at night side-marker lamp the signal access that light sensor is collected, automatic light controller is known
Not Wei driving at night state, in the case of having street lighting in urban district, the Light indicator installed in front part of vehicle has been detected
Street lamp light signal input, automatic light controller can automatic closing automobile high beam, be switched to dipped headlight illumination condition；
In night field driving, Light indicator can't detect light intensity signal, and automatic light controller automatically turns on remote
Light lamp, when there is light-illuminating in traveling front, automatic light controller detects the headlamp of opposite vehicle or the taillight of front truck
When, dipped headlight illumination condition is automatically switched to, meeting automatically switches to high beam state after terminating；
In driving at night, control circuit can gather 3-axis acceleration sensor U3 signal in real time, be converted into current
Grade signal, when automatic light controller judges that automobile is in upward slope state, automatically switches to dipped headlight state, at automobile
When descending state, automatic light controller automatically switches to high beam state.
The above embodiment is only that the preferred embodiment of the present invention is described, not to the model of the present invention
Enclose and be defined, on the premise of design spirit of the present invention is not departed from, technical side of the those of ordinary skill in the art to the present invention
In various modifications and improvement that case is made, the protection domain that claims of the present invention determination all should be fallen into.
Claims (3)
1. a kind of automatic light controller, it is characterised in that the automatic light controller include control circuit, light sensor,
Light indicator, 3-axis acceleration sensor U3, GES, combination light signal, drive circuit, dipped headlight, high beam, institute
State external power source input circuit, crystal oscillating circuit, download program the interface electricity that control circuit includes being connected with single-chip microcomputer U4 inputs
Road, the light sensor, Light indicator, GES, the output end connection single-chip microcomputer U4 of combination light signal input
End, the output end of the 3-axis acceleration sensor U3 connects the SPI interface of single-chip microcomputer, and the control circuit output end is by driving
Dynamic circuit connection dipped headlight, high beam；
The automatic light controller can gather light sensor, Light indicator, 3-axis acceleration sensor U3, speed in real time
Signal, combination light signal, judge the transport condition of current ambient light illumination and automobile, and in good time be switched on or off automobile
Dipped headlight, high beam output；
Described light sensor, Light indicator are connected with control circuit, pass through light sensor or Light indicator
Light intensity changes, and obtains a voltage signal, is input to automatic light controller, automatic light controller is according to the defeated of sampled signal
Enter amplitude, judge the suffered external environment illumination situation of Current vehicle；
Described GES, 3-axis acceleration sensor U3 are connected with control circuit, realize to the real-time of vehicle climbable gradient
Detection.
2. a kind of automatic light controller according to claim 1, it is characterised in that described combination light signal and control
Circuit processed is connected, and the control circuit is connected by drive circuit with dipped headlight, high beam, in automatic light controller certainly
Under the pattern of dynamic operation, the control to dipped headlight, high beam output state can be realized by stacked switch.
3. a kind of automatic light controller according to claim 1, it is characterised in that the single-chip microcomputer U4 is blocked using think of is flown
The serial 8-bit microprocessors of your DZ60.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510112889.7A CN104742796B (en) | 2015-03-13 | 2015-03-13 | A kind of automatic light controller |
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| CN201510112889.7A CN104742796B (en) | 2015-03-13 | 2015-03-13 | A kind of automatic light controller |
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| CN104742796A CN104742796A (en) | 2015-07-01 |
| CN104742796B true CN104742796B (en) | 2017-07-18 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107128242A (en) * | 2016-02-29 | 2017-09-05 | 长城汽车股份有限公司 | The illuminator and its control method of vehicle, vehicle |
| CN107202289A (en) * | 2016-03-18 | 2017-09-26 | 技嘉科技股份有限公司 | Lighting headlamp unit and its control method |
| CN106494302A (en) * | 2016-11-18 | 2017-03-15 | 广州市智蓝电子商务有限公司 | A kind of light sensation control device |
| CN107813778A (en) * | 2017-09-28 | 2018-03-20 | 湖北群泽汽车零部件有限公司 | A kind of multi-functional controller for daytime running light assembly |
| CN108454499A (en) * | 2018-04-16 | 2018-08-28 | 华域视觉科技(上海)有限公司 | A kind of direct current light-modulating motor adjusted for car light automatic horizontal |
| CN110910855A (en) * | 2019-12-12 | 2020-03-24 | 深圳市京华信息技术有限公司 | Automobile data recorder display screen brightness control method and device |
| CN111169368B (en) * | 2020-01-16 | 2021-10-22 | 深圳市得盛电子有限公司 | Intelligent control device for automobile light |
| CN112863196B (en) * | 2020-12-30 | 2022-06-24 | 中山大学 | Photovoltaic panel-based vehicle detection device capable of automatically supplying power |
| CN112937423A (en) * | 2021-03-11 | 2021-06-11 | 重庆长安汽车股份有限公司 | Height adjusting method of self-adaptive front lighting system |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5678873B2 (en) * | 2011-11-30 | 2015-03-04 | 株式会社デンソー | Vehicle headlamp control device |
| CN102951069B (en) * | 2012-11-16 | 2015-02-18 | 郑州宇通客车股份有限公司 | Method and system for intelligently controlling automobile headlamp |
| JP2014125147A (en) * | 2012-12-27 | 2014-07-07 | Daihatsu Motor Co Ltd | Vehicular head-lamp optical axis control device |
| CN203713675U (en) * | 2013-12-24 | 2014-07-16 | 李广超 | Vehicle headlight high beam and low beam automatic switching device |
| CN103979012B (en) * | 2014-05-08 | 2017-01-04 | 金华市金开电子科技有限公司 | Electric motor car track gradient computational methods |
| CN204124036U (en) * | 2014-09-23 | 2015-01-28 | 中国石油大学(华东) | A kind of automobile night driving illumination |
| CN204506691U (en) * | 2015-03-13 | 2015-07-29 | 安徽天健环保车辆部件有限公司 | A kind of automatic light controller |
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