CN102848968B - A kind of long-and-short distant light control method - Google Patents
A kind of long-and-short distant light control method Download PDFInfo
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Abstract
A kind of long-and-short distant light control setup, comprising: first sensor, for gathering ambient light; Second sensor, for collection vehicle front end illuminance; And control module, for the vehicle front illuminance that the ambient light and the second sensor that obtain first sensor collection gather, and environmentally illuminance judges environment at current concrete night, and according to current concrete night environment and car front end illuminance carry out the switching of long-and-short distant light, when making vehicle meeting, the data that can be gathered by first sensor judge environment at current concrete night, the Data Control long-and-short distant light gathered in conjunction with the second sensor again switches, and long-and-short distant light of the present invention switches more accurate.
Description
Technical field
The invention belongs to headlight for vehicle light modulation control field, be specifically related to a kind of headlight for vehicle light modulation control setup and control method thereof.
Background technology
Traditional headlight for vehicle is turned off the light and is generally manually opened and switch country beam and passing light, but due to the anxiety of chaufeur when meeting or when turning, may occur maloperation, thus make gently then to violate traffic, heavy then lead to traffic accident.
At present, although also occurred that illuminance environmentally carries out the automatic control technology of long-and-short distant light switching, this technology generally gathers ambient light by means of only single-sensor, and the ambient light of this collection and the Environmental Criteria value at night prestored are compared, thus carry out long-and-short distant light switching, but the Environmental Criteria value at night of this technology is only a large probable value, and can not according to concrete environment at night (such as, snowfield night, pitch-dark night, there is the night of moonlight, have the night etc. of street lamp) specifically demarcate, therefore make this long-and-short distant light control technology accurate not, there is comparatively big error.
Summary of the invention
For solving the low technical matters of existing long-and-short distant light control technology accuracy rate, provide a kind of more accurate, safer long-and-short distant light control setup and control method thereof.
Technical scheme of the present invention is:
A kind of long-and-short distant light control setup, comprising:
First sensor, for gathering ambient light;
Second sensor, for collection vehicle front end illuminance; And
Control module, for the vehicle front illuminance that the ambient light and the second sensor that obtain first sensor collection gather, and environmentally illuminance judges environment at current concrete night, and according to current concrete night environment and car front end illuminance carry out the switching of long-and-short distant light.
Further, described long-and-short distant light control setup also comprises the switch for switching long-and-short distant light, and this switch is hand switch or foot-operated switch.
Further, described long-and-short distant light control setup also comprises:
First selftest module, whether abnormal for detecting first sensor, and send testing result to control module;
Second selftest module, whether abnormal for detecting the second sensor, and send testing result to control module;
Further, described long-and-short distant light control setup also comprises alarm module, and wherein, when first sensor and/or the second sensor occur abnormal, control module controls alarm module and reports to the police.
Further, described first sensor is arranged on the air inlet grid of machinery space, and the second sensor setting is at the top of passenger accommodation.
Further, described concrete environment at night is snowfield night, at pitch-dark night, has the night of moonlight or have the night of street lamp.
A kind of long-and-short distant light control method, comprises the following steps:
First sensor gathers ambient light, the second sensor collection vehicle front end illuminance;
Control module obtains the ambient light of first sensor collection and the vehicle front illuminance of the second sensor collection, and environmentally illuminance judges environment at current concrete night, and according to current concrete night environment and car front end illuminance carry out the switching of long-and-short distant light.
Further, described environmentally illuminance judges that current concrete night, environment was specially:
By the ambient light of first sensor collection respectively with control unit in prestore all concrete night environment illuminance standard value carry out subtraction, and choose the absolute value that carries out the difference that subtraction obtains with the ambient light of first sensor collection minimum concrete night environment as environment at current concrete night.
Further, described according to current concrete night environment and the switching of carrying out long-and-short distant light of car front end illuminance be specially:
As X >=Y, close country beam, open passing light;
As X < Y, close passing light, open country beam;
Wherein, X is the vehicle front illuminance that the second sensor gathers, and Y is under environment at current concrete night, the illuminance standard value at distance vehicle front 150m place.
Further, described Y is the difference of B and │ S-B │, and wherein B is the illuminance at distance vehicle front 150m place under environment at current concrete night, and S is the illuminance under environment at current concrete night within the scope of distance vehicle front 150m-170m.
Further, gather ambient light at first sensor, further comprise before the second sensor collection vehicle front end illuminance:
Whether extremely, detect first sensor by the first selftest module, whether extremely detect the second sensor by the second selftest module.
Further, also comprise: when first sensor and/or the second sensor occur abnormal, control alarm module and report to the police.
Further, described concrete environment at night is snowfield night, at pitch-dark night, has the night of moonlight or have the night of street lamp.
Advantage of the present invention: long-and-short distant light control setup of the present invention is by comprising: first sensor, for gathering ambient light; Second sensor, for collection vehicle front end illuminance; And control module, for the vehicle front illuminance that the ambient light and the second sensor that obtain first sensor collection gather, and environmentally illuminance judges environment at current concrete night, and according to current concrete night environment and car front end illuminance carry out the switching of long-and-short distant light, when making vehicle meeting, the data that can be gathered by first sensor judge environment at current concrete night, the Data Control long-and-short distant light gathered in conjunction with the second sensor again switches, and long-and-short distant light of the present invention switches more accurate.
Accompanying drawing explanation
The structural representation that Fig. 1 provides for long-and-short distant light control setup of the present invention.
The structural representation of the preferred embodiment that Fig. 2 provides for long-and-short distant light control setup of the present invention.
The method flow diagram that Fig. 3 provides for long-and-short distant light control method of the present invention.
Detailed description of the invention
In order to make technical matters solved by the invention, technical scheme and beneficial effect clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Existing long-and-short distant light shifter, generally gather ambient light by means of only single-sensor, and the ambient light of this collection and the Environmental Criteria value at night prestored are compared, thus carry out long-and-short distant light switching, Environmental Criteria value at night is herein only a large probable value, and can not according to concrete environment at night (such as, snowfield night, pitch-dark night, have the night of moonlight, have the night etc. of street lamp) specifically demarcate, therefore make this long-and-short distant light control technology accurate not, there is comparatively big error.The present invention is the above-mentioned technical matters solving prior art existence, and provide a kind of long-and-short distant light control setup, as shown in Figure 1, this device comprises:
First sensor 1, for gathering ambient light;
Second sensor 2, for collection vehicle front end illuminance; And
Control module 3, for the vehicle front illuminance that the ambient light and the second sensor 2 that obtain first sensor 1 collection gather, and environmentally illuminance judges environment at current concrete night, and according to current concrete night environment and car front end illuminance carry out the switching of long-and-short distant light.
In concrete enforcement, described first sensor 1 is preferably arranged on the top of passenger accommodation, certainly, this first sensor 1 also can be arranged on other optional position, and only need be used for gathering ambient light, described second sensor 2 is preferably arranged on the air inlet grid of machinery space, for the illuminance of collection vehicle air inlet grid positions, certainly, this second sensor 2 also can be arranged on other optional position, only need be used for collection vehicle front end illuminance.
Above-mentioned concrete environment at night is snowfield night, at pitch-dark night, have the night of moonlight or have the night of street lamp, and certainly, concrete night of the present invention, environment was not limited to environment at above concrete night, can also be environment at other at concrete night, not do illustrate one by one at this.
As a kind of preferred version of long-and-short distant light control setup of the present invention, described long-and-short distant light control setup also comprises the switch for switching long-and-short distant light, this switch is hand switch or foot-operated switch, object is, when occurring that extraordinary circumstances (such as, above-mentioned first sensor 1, second sensor 2 and/or control module 3 break down, or when vehicle travels at pot hole etc.) time, can manually or foot-propelled master cock carry out long-and-short distant light switching, thus make the function of long-and-short distant light control setup of the present invention more perfect.
Whether as another preferred version of long-and-short distant light control setup of the present invention, described long-and-short distant light control setup also comprises: the first selftest module 4, abnormal for detecting first sensor 1, and sends testing result to control module 3; Second selftest module 5, whether abnormal for detecting the second sensor 2, and send testing result to control module 3.Like this, make long-and-short distant light control setup of the present invention have self-checking function, and can specifically judge which component failure, thus be convenient to solve fault.
It should be noted that at this, above-mentioned first selftest module 4 can be realized by self-checking circuit, also by software simulating, can be prior art to those skilled in the art, therefore do not illustrate at this due to self-checking circuit with by the self checking method of software simulating.In like manner, above-mentioned second selftest module 5 also can be realized by self-checking circuit, or by software simulating.
As another preferred version of long-and-short distant light control setup of the present invention, described long-and-short distant light control setup also comprises alarm module 6, wherein, when first sensor 1 and/or the second sensor 2 occur abnormal, control module 3 controls alarm module 6 and reports to the police, object is, is convenient to remind chaufeur device to break down, and needs to carry out fault handling.
The structural representation of the preferred embodiment that Fig. 2 provides for long-and-short distant light control setup of the present invention, consult Fig. 2, long-and-short distant light control setup comprises:
First sensor 1, for gathering ambient light;
Second sensor 2, for collection vehicle front end illuminance;
First selftest module 4, whether abnormal for detecting first sensor 1;
Second selftest module 5, whether abnormal for detecting the second sensor 2;
Alarm module 6; And
Control module 3, for the vehicle front illuminance that the ambient light and the second sensor 2 that obtain first sensor 1 collection gather, and environmentally illuminance judges environment at current concrete night, and according to current concrete night environment and car front end illuminance carry out the switching of long-and-short distant light; Also for receiving the whether abnormal testing result of first sensor 1 that the first selftest module 4 detects, and second selftest module 5 detect the second sensor 2 whether there is abnormal testing result, and when first sensor 1 and/or the second sensor 2 occur abnormal, control alarm module 6 and report to the police.
As shown in Figure 3, long-and-short distant light control method, comprises the following steps:
Step 31: first sensor 1 gathers ambient light, the second sensor 2 collection vehicle front end illuminance;
Step 32: control module 3 obtains the ambient light of first sensor 1 collection and the vehicle front illuminance of the second sensor 2 collection, and environmentally illuminance judges environment at current concrete night, and according to current concrete night environment and car front end illuminance carry out the switching of long-and-short distant light.
Above-mentioned concrete environment at night is snowfield night, at pitch-dark night, have the night of moonlight or have the night of street lamp, and certainly, concrete night of the present invention, environment was not limited to environment at above concrete night, can also be environment at other at concrete night, not do illustrate one by one at this.
In concrete enforcement, above-mentioned environmentally illuminance judges that current concrete night, environment was specially:
The ambient light that first sensor 1 is gathered respectively with control unit in prestore all concrete night environment standard value carry out subtraction, and choose the ambient light gathered with first sensor 1 carry out the absolute value of the difference that subtraction obtains minimum concrete night environment as environment at current concrete night.
Be understandable that, above-mentioned concrete night, the standard value of environment referred to the standard value of environment at each at concrete night, the standard value at such as snowfield night, the standard value at pitch-dark night, the standard value having the standard value at the night of moonlight, have the night of street lamp, above-mentioned standard value is the average being recorded environment at each by many experiments at concrete night, preferably, this average can be obtained by methods such as weighted mean, root of mean square, medium filterings.
In concrete enforcement, above-mentioned according to current concrete night environment and the switching of carrying out long-and-short distant light of car front end illuminance be specially:
As X >=Y, close country beam, open passing light;
As X < Y, close passing light, open country beam;
Wherein, X is the vehicle front illuminance that the second sensor gathers, and Y is under environment at current concrete night, the illuminance standard value at distance vehicle front 150m place.
Preferably, above-mentioned Y is the difference of B and │ S-B │, and wherein B is the illuminance at distance vehicle front 150m place under environment at current concrete night, and S is the illuminance under environment at current concrete night within the scope of distance vehicle front 150m-170m.
As a kind of preferred version of long-and-short distant light control method of the present invention, ambient light is gathered at first sensor 1, can further comprise before second sensor 2 collection vehicle front end illuminance: whether extremely detect first sensor 1 by the first selftest module 4, whether extremely, the second sensor 2 is detected by the second selftest module 5, object is, make long-and-short distant light control method of the present invention have self-checking function, and can specifically judge which component failure, thus be convenient to solve fault.
It should be noted that at this, above-mentioned first selftest module 4 can be realized by self-checking circuit, also by software simulating, can be prior art to those skilled in the art, therefore do not illustrate at this due to self-checking circuit with by the self checking method of software simulating.In like manner, above-mentioned second selftest module 5 also can be realized by self-checking circuit, or by software simulating.
As another preferred version of long-and-short distant light control method of the present invention, also comprise: when first sensor 1 and/or the second sensor 2 occur abnormal, control alarm module 6 and report to the police, object is, reminds chaufeur to note.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. a long-and-short distant light control method, is characterized in that, comprises the following steps:
First sensor gathers ambient light, the second sensor collection vehicle front end illuminance;
Control module obtains the ambient light of first sensor collection and the vehicle front illuminance of the second sensor collection, and environmentally illuminance judges environment at current concrete night, and according to current concrete night environment and car front end illuminance carry out the switching of long-and-short distant light
Described environmentally illuminance judges that current concrete night, environment was specially:
By the ambient light of first sensor collection respectively with control unit in prestore all concrete night environment illuminance standard value carry out subtraction, and choose the absolute value that carries out the difference that subtraction obtains with the ambient light of first sensor collection minimum concrete night environment as environment at current concrete night.
2. long-and-short distant light control method according to claim 1, is characterized in that, described according to current concrete night environment and the switching of carrying out long-and-short distant light of car front end illuminance be specially:
As X >=Y, close country beam, open passing light;
As X < Y, close passing light, open country beam;
Wherein, X is the vehicle front illuminance that the second sensor gathers, and Y is under environment at current concrete night, the illuminance standard value at distance vehicle front 150m place.
3. long-and-short distant light control method according to claim 2, it is characterized in that, described Y is the difference of B and │ S-B │, wherein B is the illuminance at distance vehicle front 150m place under environment at current concrete night, and S is the illuminance under environment at current concrete night within the scope of distance vehicle front 150m-170m.
4. long-and-short distant light control method according to claim 1, is characterized in that, gathers ambient light, further comprise before the second sensor collection vehicle front end illuminance at first sensor:
Whether extremely, detect first sensor by the first selftest module, whether extremely detect the second sensor by the second selftest module.
5. long-and-short distant light control method according to claim 4, is characterized in that, also comprise:
When first sensor and/or the second sensor occur abnormal, control alarm module and report to the police.
6. the long-and-short distant light control method according to any one of claim 1 to 5, is characterized in that, described concrete environment at night is snowfield night, at pitch-dark night, have the night of moonlight or have the night of street lamp.
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| CN201110179070.4A CN102848968B (en) | 2011-06-29 | 2011-06-29 | A kind of long-and-short distant light control method |
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| CN201110179070.4A CN102848968B (en) | 2011-06-29 | 2011-06-29 | A kind of long-and-short distant light control method |
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| CN102848968B true CN102848968B (en) | 2016-03-02 |
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Cited By (1)
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| CN110293901A (en) * | 2019-05-21 | 2019-10-01 | 重庆长安汽车股份有限公司 | A kind of long-and-short distant light switching method and device |
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| CN103260317A (en) * | 2013-05-29 | 2013-08-21 | 屠建军 | Intelligent light control method and control system thereof |
| JP5820843B2 (en) * | 2013-05-29 | 2015-11-24 | 富士重工業株式会社 | Ambient environment judgment device |
| WO2017128013A1 (en) * | 2016-01-25 | 2017-08-03 | 黄冠明 | Method for pushing information during prompting of switching to low beam headlamps, and prompting system |
| WO2018165847A1 (en) * | 2017-03-14 | 2018-09-20 | 深圳市南北汽车美容有限公司 | Oncoming vehicle headlight reminding method and reminding system |
| JP7011901B2 (en) * | 2017-06-27 | 2022-02-10 | コイト電工株式会社 | Control device and lighting system |
| CN107599956A (en) * | 2017-07-29 | 2018-01-19 | 湖南文理学院 | One kind meets at night safety control system |
| CN107585091A (en) * | 2017-07-29 | 2018-01-16 | 湖南文理学院 | A kind of far/near lamplight of automobile intelligent controlling device |
| CN107415808A (en) * | 2017-08-03 | 2017-12-01 | 江苏金坛汽车工业有限公司 | A kind of automobile dimming-distance light lamp control system and its control method |
| WO2019115313A1 (en) * | 2017-12-14 | 2019-06-20 | Lumileds Holding B.V. | Illuminant for vehicle headlight with automatic beam mode selection |
| CN112092720A (en) * | 2020-09-17 | 2020-12-18 | 彭召翔 | Vehicle-mounted far and near light intelligent switching device and method |
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