CN103204098B - System and method for realizing anti-dazzling car high beam - Google Patents
System and method for realizing anti-dazzling car high beam Download PDFInfo
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- CN103204098B CN103204098B CN201310099653.5A CN201310099653A CN103204098B CN 103204098 B CN103204098 B CN 103204098B CN 201310099653 A CN201310099653 A CN 201310099653A CN 103204098 B CN103204098 B CN 103204098B
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- country beam
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Abstract
The invention discloses a system and method for realizing an anti-dazzling car high beam. The system comprises a GPS (Global Positioning System) data acquisition board, wherein the GPS data acquisition board sends acquired data to a controller; the controller controls an on/off state of a high beam and light transmittance or optical opacity of a controllable liquid crystal device; and the liquid crystal device is connected to a driving circuit. For the irradiation of a high beam of a positively driving car, a positive square wave signal is at a high electric level, the liquid crystal device is light-transmitting, a driver can see reflective lights of irradiative lights of the high beam, a driving car in an opposite side is an opposite driving car, an opposite square wave signal at a low electric level exists, and the high beam is turned off, so that the driver in the positive direction cannot see the lights of the high beam of the driving car in the opposite side and can see the road condition for safe driving. For the opposite square wave signal, the reverse is true. According to the system and method for realizing the anti-dazzling car high beam, the problem that the road condition cannot be seen clearly as the high beam must be turned off when cars meet at night is solved, the driver is allowed open the high beam when meeting with other cars at night, and the driver can see the road condition clearly and drive safely.
Description
Technical field
The invention particularly relates to one and realize anti-glare dazzle light system and method.
Background technology
Night is when automobile meeting, if switch-on distance light, then the other side's chaufeur can not be seen road conditions clearly and causes danger; If not switch-on distance light, then this chaufeur can not be seen road conditions clearly and causes danger.
Night meeting, the use of country beam is the large problem of puzzlement chaufeur, for solving the problem, forefathers have done a lot of work, as application number 96106470.6, denomination of invention is the anti-meeting dazzling technique of back light and side lamp background illumination, the technical scheme used in this application is when two cars nighttime meeting, both sides' chaufeur opens back light and the illumination of side lamp backgrounds while using low beam instead, illuminate road and scenery after self car body and car, namely mutually for the other side illuminates road ahead scenery and car body, if but back has with car, then road cannot be seen clearly with car, or easily can cause danger.
Application number 201210206751.X, denomination of invention is: a kind of automobile meeting anti glare anti static coatings device and anti glare anti static coatings method, is by blocking, the light weakening the other side reaches abblendbar object, but while weakening the other side's country beam light, also reduce the effective sunlight of road conditions, do not see road conditions.
Application number 201210056318.2, denomination of invention is: a kind of giddy light by dominated system based on car networking and control method thereof judge that current vehicle position changes its country beam into passing light automatically by GPS module.Due to cannot country beam be used, can cause not seeing road conditions.
Utility model patent, the patent No. 992000062.9, anti-dazzling controller of motor vehicle, controlling machine motor-car changes its country beam into passing light automatically when meeting.Due to cannot country beam be used, can cause not seeing road conditions.
Utility model patent, patent No. 200420058714.X, motor vehicle far-reaching lamp antiglare computerized controller, controlling machine motor-car changes its country beam into passing light automatically when meeting.Due to cannot country beam be used, can cause not seeing road conditions.
Utility model patent, the patent No. 201120572731.5, a kind of nighttime meeting anti-dazzle spectacles, be the polaroid by glasses, the light weakening the other side reaches abblendbar object, but while weakening the other side's country beam light, also reduce the effective sunlight of road conditions, do not see road conditions.
Summary of the invention
Object of the present invention is exactly to solve the problem, one is provided to realize anti-glare dazzle light system and method, use of the present invention allows chaufeur can only see its upper beam line reflection light driving a car sent, and can't see the other side's dazzle light light.
To achieve these goals, the present invention adopts following technical scheme:
One realizes anti-glare vehicle country beam system, it comprises gps data collection plate, the data gathered are sent into controller by gps data collection plate, the printing opacity or light tight of the Data Control country beam light on and off that controller gathers according to gps data collection plate and liquid-crystal apparatus, described liquid-crystal apparatus is connected with driving circuit, the light tight of the closedown of the unlatching of country beam and the printing opacity of liquid-crystal apparatus and country beam and liquid-crystal apparatus synchronously carries out, and chaufeur sees the road conditions in front through liquid-crystal apparatus.
Described liquid-crystal apparatus is be arranged on liquid crystal board on transparent glass or liquid crystal glasses.
Described country beam is LED light-emitting diode.
Described country beam is xenon headlight or halogen regenerative-cycle headlamp, installs controlled liquid crystal board before country beam.
Described driving circuit comprises input pickup resistance, input pickup resistance is connected with transistor base, the collecting electrode of aerotron is connected with pull-up resistor respectively at output, pull-up resistor is connected with power supply, the grounded emitter of aerotron, the input end of driving circuit is connected with controller, and the mouth of driving circuit is connected with liquid-crystal apparatus.
Described gps data collection plate is the LEA-5H module of u-blox company.
Based on an anti-glare method for anti-glare vehicle country beam system, concrete steps are:
Step one: allly all install anti-glare vehicle country beam system on automobile, when chaufeur travels night, chaufeur opens anti-glare system;
Step 2: GPS collection plate gathers the position coordinate of t1 time and t2 time automobile and longitude and latitude (x1, y1) and (x2, x3), t2>t1;
Step 3: if ︱ x2-x1 ︱ > ︱ y2-y1 ︱ and x2>x1 or ︱ x2-x1 ︱ < ︱ y2-y1 ︱ and y2>y1, then defining automobile is forward travel, and controller transmission frequency is more than or equal to the forward square-wave signal of 50HZ; If ︱ x2-x1 ︱ > ︱ y2-y1 ︱ and x2<x1 or ︱ x2-x1 ︱ < ︱ y2-y1 ︱ and y2<y1, definition automobile is backward going, controller transmission frequency is more than or equal to the reverse square-wave signal of 50HZ, forward square-wave signal is advanced or delayed 180 degree than reverse square-wave signal, for mutually reverse;
Step 4: utilize square-wave signal to control the printing opacity of country beam on and off and liquid-crystal apparatus and light tight, the light tight of the closedown of the unlatching of country beam and the printing opacity of liquid-crystal apparatus, country beam and liquid-crystal apparatus synchronously carries out.
Time in described step 2 all adopts unified gps time.
Principle of work of the present invention: when forward square-wave signal is high level, the country beam of forward travel automobile irradiates, liquid-crystal apparatus printing opacity, chaufeur can see the reflected light of country beam irradiation light, the other side's running automobile and backward going automobile, is reverse square-wave signal, it is now low level, its far-reaching headlamp turn-off, forward chaufeur can't see the other side's running automobile country beam light, so just can see road condition safety clearly and drive.When forward square-wave signal is low level, what all can't see forward chaufeur, and on the contrary, counter steer person can see road condition safety clearly and drive.See road conditions clearly due to chaufeur and can't see the frequency that road conditions replace and be more than or equal to 50Hz, so the imperceptible flicker of chaufeur can road conditions be seen clearly.Be what all be can't see owing to there being the time of half, also lossy to light during liquid-crystal apparatus printing opacity, so see that the brightness of road conditions is less than the half of normal brightness, the brightness weakened by improving country beam of road conditions brightness solves.
Beneficial effect of the present invention: the invention solves night meeting and will close the problem that country beam causes road conditions not see, chaufeur is allowed to open country beam when meeting at night, due to the utilizing emitted light of the country beam of this car can be seen, and can't see the light of the other side's car country beam, so road conditions, safe driving can be seen clearly.
Accompanying drawing explanation
Fig. 1 is system chart of the present invention;
Fig. 2 is the square-wave signal sequential chart that controller of the present invention produces;
Fig. 3 is the driving circuit of liquid-crystal apparatus.
Wherein, 1.GPS data acquisition board, 2. controller, 3. country beam, 4. liquid-crystal apparatus.
Detailed description of the invention
Below in conjunction with accompanying drawing and embodiment, the invention will be further described.
Country beam 3 light on and off of automobile are controlled fast, frequency is more than or equal to 50Hz, every platform automobile all will be equipped with anti-glare vehicle country beam system (abbreviation system) as shown in Figure 1, and system comprises gps data collection plate 1(global positioning system), controller 2, controlled country beam 3 and controlled liquid-crystal apparatus 4.Controller 2 produces the square-wave signal that frequency is more than or equal to 50Hz and controls the Kai Heguan of the liquid-crystal apparatus 4 of this car and the Kai Heguan of this car country beam, and its sequential chart as shown in Figure 2.The country beam 3 of the other side's automobile and liquid-crystal apparatus 4 are also by the control of the controller 2 of the other side's automotive system, but its square-wave signal is reverse, as shown in Figure 2.Due to the inertia of human eye, frequency is more than or equal to the stroboscopic of 50Hz, and human eye does not see flicker.
Liquid-crystal apparatus 4 is for being arranged on liquid crystal board on transparent glass or liquid crystal glasses, and liquid-crystal apparatus 4 is by the control of voltage, light tight when liquid-crystal apparatus 4 adds 12V voltage, the printing opacity when liquid-crystal apparatus 4 adds 0V voltage.LCD Controlling level needs oppositely and level conversion, and could control liquid-crystal apparatus 4, its driving circuit as shown in Figure 3.
System is by gps data collection plate 1 acquisition time data and position data.Gps data collection plate 1 can select the LEA-5H module of u-blox company.The statement that gps data collection plate 1 exports has kind more than 10, and wherein locating data statement is the most frequently used, and form is as follows:
$ GPGGA(locating data), hhmmss.dd, xxmm.dddd, <N|S>, yyymm.dddd, <E|W>, v, ss, d.d, h.h, M, g.g, M, a.a, xx x x*hh<CR><LFGreat T.GreaT.GT
Each data implication is: <hhmmss.dd> is world concordant time (UTC); <xxmm.dddd> is latitude value; <N|S> is by being surveyed latitude hemisphere; <yyymm.dddd> is longitude; <E|W> is by being surveyed longitude hemisphere; <v> locates significance indicator, and it is invalid that " 0 " locates, and " 1 " location effectively; <ss> is location number of satellite used, number range 00 ~ 12; <d.d> is horizontal dilution of precision; <h.h> is mean sea level height; <M> character M; <g.g> is the difference height in mean sea level and WGS-84 reference ellipsoid face; <a.a> is the DGPS data phase, the time (S, if without differential corrections, then this be empty) of numerical value for experiencing from last actv. difference correction; <xxxx> is difference station numbering, number range 0000 ~ 1023 (if without differential corrections, then this is empty).
In the present system, only need extraction time and location information, and the validity of locating data is verified.Such as, from output statement: $ GPGGA, 102637.000,6117.2345, N, 02439.5670, E, 1,10,0.81,35.2, M, 19.5, M, the information obtained in * 50 is: time for positioning is UTC time 10:26:37, and position is north latitude 61 ° 17.2345 ', east longitude 24 ° 39.5670 '.
Gps data collection plate 1 provides a pulse per second (PPS) (timepulse) to can be used as synchronizing signal.
The square-wave signal of every platform automobile must be synchronous.System with unified GPS pps pulse per second signal as the energizing signal of the square-wave signal of every platform automobile to determine that the square-wave signal of every platform automobile is synchronous.
The controller 2 of system can adopt the 89C51 of MCS-51 series, the pulse per second (PPS) pin of gps data collection plate 1 is met the interrupt pin INT0 of 89C51, makes 89C51 by the interruption per second of GPS unified clock once.If the output of the P1.0 of 89C51 is square-wave signal.The interrupt service routine of INT0 mainly completes two tasks: if 1. square-wave signal is that just to put P1.0 be high level to forward square-wave signal, and square-wave signal is that just to put P1.0 be low level (judgement of square-wave signal Direct/Reverse describes later) to reverse square-wave signal; 2. arranging timer conter T0 is timing working mode, and mode is mode 2 and 10ms overflows once.The interrupt service routine of timer conter T0 is that P1.0 is reverse.
The square-wave signal of every platform automobile can be forward square-wave signal, also can be reverse square-wave signal (forward square-wave signal non-).The positive and negative of square-wave signal is used to the direction distinguishing running automobile, and namely the square-wave signal of forward travel automobile adopts forward square-wave signal, and the square-wave signal of backward going automobile adopts reverse square-wave signal.By the change of GPS location data, the present invention determines that the automobile of forward travel is corresponding with forward square-wave signal, the automobile of backward going is corresponding with reverse square-wave signal.Specific algorithm is as follows:
Under steam, when the t1 time, the position coordinate of automobile and longitude and latitude are (x1, y1) to automobile; When the t2 time, the position coordinate of automobile is (x2, y2), and t2>t1.
If ︱ x2-x1 ︱ > ︱ y2-y1 ︱ and x2>x1 or ︱ x2-x1 ︱ < ︱ y2-y1 ︱ and y2>y1
Then defining automobile is forward travel, adopts forward square-wave signal;
If ︱ x2-x1 ︱ > ︱ y2-y1 ︱ and x2<x1 or ︱ x2-x1 ︱ < ︱ y2-y1 ︱ and y2<y1
Then defining automobile is backward going, adopts reverse square-wave signal.
The difference of t2 and t1 is larger, and it is more reliable that the Direct/Reverse of square-wave signal is determined, but determine that the time used is longer.The determination of the Direct/Reverse of square-wave signal does not once complete and just terminates, but repeatedly determine in the driving process of automobile.
The data message of gps data collection plate 1 is connected to 89C51 by serial port.
Such as t1 time data is $ GPGGA, 101614.000,3640.2345, N, 11700.1670, E, 1,10,0.81,35.2, M, 19.5, M, * 50, the information obtained is: time for positioning is UTC time 10:16:14, and position is north latitude 36 ° 40.2345 ', east longitude 117 ° 0.1670 '.
T2 time data is $ GPGGA, 101614.000,3640.3348, N, 11700.1674, E, 1,10,0.81,35.2, M, 19.5, M, * 50, the information obtained is: time for positioning is UTC time 10:16:34, and position is north latitude 36 ° 40.3348 ', east longitude 117 ° 0.1674 '.
Because x2-x1=36 ° 40.3348 '-36 ° 40.2345 '=0 ° 0.1003 ',
y2－y1＝117°0.1674′－117°0.1670′＝0°0.0004′，
I.e. ︱ x2-x1 ︱ > ︱ y2-y1 ︱
And x2-x1=0 ° of 0.1003 ' >0
So defining this automobile is forward travel, adopt forward square-wave signal.
When forward square-wave signal is high level, the country beam of forward travel automobile irradiates, liquid-crystal apparatus 4 printing opacity, chaufeur can see the reflected light of country beam irradiation light, the other side's running automobile and backward going automobile, is reverse square-wave signal, it is now low level, its far-reaching headlamp turn-off, forward chaufeur can't see the other side's running automobile country beam light, so just can see road condition safety clearly and drive.When forward square-wave signal is low level, what all can't see forward chaufeur, and on the contrary, counter steer person can see road condition safety clearly and drive.See road conditions clearly due to chaufeur and can't see the frequency that road conditions replace and be more than or equal to 50Hz, so the imperceptible flicker of chaufeur can road conditions be seen clearly.Be what all be can't see owing to there being the time of half, also lossy to light during liquid-crystal apparatus 4 printing opacity, so see that the brightness of road conditions is less than the half of normal brightness, weakening of road conditions brightness can be solved by the brightness improving country beam 3.
The invention solves night meeting and will close the problem that country beam causes road conditions not see, chaufeur is allowed to open country beam when meeting at night, due to the utilizing emitted light of the country beam of this car can be seen, and can't see the light of the other side's car country beam, so road conditions, safe driving can be seen clearly.
By reference to the accompanying drawings the specific embodiment of the present invention is described although above-mentioned; but not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection scope of the present invention.
Claims (7)
1. the anti-glare method based on anti-glare vehicle country beam system, it is characterized in that, described anti-glare vehicle country beam system, comprise gps data collection plate, the data gathered are sent into controller by gps data collection plate, the printing opacity or light tight of the Data Control country beam light on and off that controller gathers according to gps data collection plate and liquid-crystal apparatus, described liquid-crystal apparatus is connected with driving circuit, the light tight of the closedown of the unlatching of country beam and the printing opacity of liquid-crystal apparatus and country beam and liquid-crystal apparatus synchronously carries out, and chaufeur sees the road conditions in front through liquid-crystal apparatus;
Anti-glare method concrete steps are:
Step one: all install anti-glare vehicle country beam system on all automobiles, when chaufeur travels night, liquid-crystal apparatus on chaufeur band;
Step 2: GPS collection plate gathers the position coordinate of t1 time and t2 time automobile and longitude and latitude (x1, y1) and (x2, x3), t2>t1;
Step 3: if ︱ x2-x1 ︱ > ︱ y2-y1 ︱ and x2>x1 or ︱ x2-x1 ︱ < ︱ y2-y1 ︱ and y2>y1, then defining automobile is forward travel, and controller transmission frequency is more than or equal to the forward square-wave signal of 50HZ; If ︱ x2-x1 ︱ > ︱ y2-y1 ︱ and x2<x1 or ︱ x2-x1 ︱ < ︱ y2-y1 ︱ and y2<y1, definition automobile is backward going, controller transmission frequency is more than or equal to the reverse square-wave signal of 50HZ, forward square-wave signal is shift to an earlier date or delayed 180 degree, for mutually reverse than reverse square-wave signal;
Step 4: utilize square-wave signal to control country beam and open and close and the Kai Heguan of liquid-crystal apparatus, the light tight of the closedown of the unlatching of country beam and the printing opacity of liquid-crystal apparatus and country beam and liquid-crystal apparatus synchronously carries out.
2. a kind of anti-glare method based on anti-glare vehicle country beam system as claimed in claim 1, it is characterized in that, described country beam is LED light-emitting diode.
3. a kind of anti-glare method based on anti-glare vehicle country beam system as claimed in claim 1, is characterized in that, described liquid-crystal apparatus is be arranged on liquid crystal board on light-passing board or liquid crystal glasses.
4. a kind of anti-glare method based on anti-glare vehicle country beam system as claimed in claim 1, it is characterized in that, described country beam is xenon headlight or halogen regenerative-cycle headlamp, installs controlled liquid crystal board before country beam.
5. a kind of anti-glare method based on anti-glare vehicle country beam system as claimed in claim 1, it is characterized in that, described driving circuit comprises input pickup resistance, input pickup resistance is connected with transistor base, the collecting electrode of aerotron is connected with pull-up resistor respectively at output, and pull-up resistor is connected with power supply, the grounded emitter of aerotron, the input end of driving circuit is connected with controller, and the mouth of driving circuit is connected with controllable liquid crystal device.
6. a kind of anti-glare method based on anti-glare vehicle country beam system as claimed in claim 1, it is characterized in that, described gps data collection plate is the LEA-5H module of u-blox company.
7. a kind of anti-glare method based on anti-glare vehicle country beam system as claimed in claim 1, it is characterized in that, the time in described step 2 all adopts unified gps time.
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| CN201310099653.5A CN103204098B (en) | 2013-03-26 | 2013-03-26 | System and method for realizing anti-dazzling car high beam |
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| CN201310099653.5A CN103204098B (en) | 2013-03-26 | 2013-03-26 | System and method for realizing anti-dazzling car high beam |
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| CN103434369A (en) * | 2013-08-28 | 2013-12-11 | 吴云肖 | Strong light inhibition device and nighttime meeting strong light inhibition system and method |
| CN104723942A (en) * | 2015-04-02 | 2015-06-24 | 浙江交通职业技术学院 | System and method for preventing automobile strong light glare |
| CN106740435A (en) * | 2016-12-20 | 2017-05-31 | 北京汽车股份有限公司 | Vehicle |
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| CN101399463A (en) * | 2007-09-27 | 2009-04-01 | 上海亿盟电气自动化技术有限公司 | Intelligent signal sampling device by using data interaction of dual micro processor |
| JP2009214812A (en) * | 2008-03-12 | 2009-09-24 | Koito Mfg Co Ltd | Vehicular headlight device and its control method |
| US8704653B2 (en) * | 2009-04-02 | 2014-04-22 | GM Global Technology Operations LLC | Enhanced road vision on full windshield head-up display |
| CN202193050U (en) * | 2011-08-17 | 2012-04-18 | 胡鹏 | Novel anti-collision system |
| CN102592442A (en) * | 2012-03-06 | 2012-07-18 | 奇瑞汽车股份有限公司 | Glare control system based on Internet of vehicles and control method of glare control system |
| CN102700385B (en) * | 2012-06-21 | 2015-06-17 | 王普 | Device and method for preventing glare during vehicle crossing |
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