Invention content
It is directed to the above problem, the present invention provides a kind of headlight for vehicles control method and device, realizes and ensures that automobile is bigLamp control system is hardly damaged, the purpose of continue working.
To achieve the goals above, an embodiment of the present invention provides following technical solutions：
A kind of headlight for vehicles control method, this method include：
In the case where headlight for vehicles is in automatic control state, periodical acquisition control factor information, wherein the governing factorInformation includes Weather information, temporal information and current automobile geographical location information；
The primary governing factor information is often acquired, according to the Weather information, the temporal information and the current vapourLight intensity value is calculated in vehicle geographical location information；
The current switching-state information of the headlight for vehicles is obtained, and strong according to the switching-state information, the lightAngle value and default threshold value of opening control being turned on and off for the headlight for vehicles.
Optionally, described according to the Weather information, the temporal information and the current automobile geographical location information, meterCalculation obtains light intensity value, including：
Determine that weather characteristics value, first correspondence characterize the Weather information according to preset first correspondenceWith the correspondence between the weather characteristics value；
Determine that temporal characteristics value, second correspondence characterize the temporal information according to preset second correspondenceWith the correspondence between the temporal characteristics value；
Determine category of roads information corresponding with the current automobile geographical location information；
Determine that position feature value, the third correspondence characterize the category of roads according to preset third correspondenceCorrespondence between information and the position feature value；
According to the weather characteristics value, the temporal characteristics value and the position feature value, it is strong that the light is calculatedAngle value.
Optionally, described to obtain the current switching-state information of the headlight for vehicles, and according to the switching-state information,The light intensity value and default threshold value of opening control being turned on and off for the headlight for vehicles, including：
The current state of the headlight for vehicles is determined according to the switching-state information；
When the headlight for vehicles is currently at open state, if the light intensity value is more than or equal to the default unlatchingThreshold value then controls and closes the headlight for vehicles, if the light intensity value is less than the default unlatching threshold value, does not operate；
When the headlight for vehicles is currently at closed state, if the light intensity value is more than or equal to the default unlatchingThreshold value does not operate then, if the light intensity value is less than the default unlatching threshold value, controls and opens the headlight for vehicles.
Optionally, further include：
Obtain the navigation routine information of automobile；
There are specific closed area and the automobile and institutes on corresponding travel route in the navigation routine informationWhen the distance between the entrance for stating specific closed area reaches target range, the primary governing factor information is often acquired, according toThe current automobile geographical location information calculates the distance between the entrance of the automobile and the specific closed area, according to instituteThe distance between the entrance of the current driving speed and the automobile and the specific closed area of stating automobile is calculated describedThe arrival entry time of automobile；
When the arrival entry time is less than or equal to preset time threshold, the headlight for vehicles is opened in control.
Optionally, the temporal information includes sunrise time, sunset time, float time and current time, wherein describedTemporal characteristics value is determined according to preset second correspondence, including：
According to the sunrise time and the float time, target sunrise time is calculated；
According to the magnitude relationship between the current time, the target sunrise time, the sunset time, determine described inTemporal characteristics value.
A kind of car headlight control device, the device include：
Acquisition module is used in the case where headlight for vehicles is in automatic control state, periodical acquisition control factor information,In, the governing factor information includes Weather information, temporal information and current automobile geographical location information；
Computing module, for often acquiring the primary governing factor information, according to the Weather information, the temporal informationWith the current automobile geographical location information, light intensity value is calculated；
Control module, the switching-state information current for obtaining the headlight for vehicles, and believed according to the on off stateBreath, the light intensity value and default threshold value of opening control being turned on and off for the headlight for vehicles.
Optionally, the computing module includes：
First determination unit, for determining weather characteristics value according to preset first correspondence, described first corresponds to passSystem characterizes the correspondence between the Weather information and the weather characteristics value；
Second determination unit, for determining temporal characteristics value according to preset second correspondence, described second corresponds to passSystem characterizes the correspondence between the temporal information and the temporal characteristics value；
Third determination unit, for determining category of roads information corresponding with the current automobile geographical location information；
4th determination unit, for determining position feature value according to preset third correspondence, the third, which corresponds to, closesSystem characterizes the correspondence between the category of roads information and the position feature value；
Computing unit, for according to the weather characteristics value, the temporal characteristics value and the position feature value, calculatingTo the light intensity value.
Optionally, the control module includes：
Status determining unit, the current state for determining the headlight for vehicles according to the switching-state information；
First judging unit, for when the headlight for vehicles is currently at open state, if the light intensity value is bigIt in equal to the default unlatching threshold value, then controls and closes the headlight for vehicles, if the light intensity value is less than described preset and opensThreshold value is opened, then is not operated；
Second judgment unit, for when the headlight for vehicles is currently at closed state, if the light intensity value is bigIt in equal to the default unlatching threshold value, does not then operate, if the light intensity value is less than the default unlatching threshold value, control is openedOpen the headlight for vehicles.
Optionally, further include：
Route acquiring module, the navigation routine information for obtaining automobile；
Time computing module, there are specific enclosed areas on corresponding travel route in the navigation routine informationWhen domain and the automobile and the distance between the entrance of the specific closed area reach target range, the primary control is often acquiredFactor information processed, according to the current automobile geographical location information calculate the automobile and the specific closed area entrance itBetween distance, according between the current driving speed of the automobile and the automobile and the entrance of the specific closed area away fromFrom the arrival entry time that the automobile is calculated；
Open control module, for when the arrival entry time is less than or equal to preset time threshold, institute to be opened in controlState headlight for vehicles.
Optionally, second determination unit includes：
Object time computation subunit, for according to the sunrise time and float time, target to be calculated at sunriseBetween, the temporal information includes sunrise time, sunset time, float time and current time；
Temporal characteristics value determination subelement, for according to the current time, the target sunrise time, it is described at sunsetBetween between magnitude relationship, determine the temporal characteristics value.
Compared to the prior art, headlight for vehicles control method and device provided in an embodiment of the present invention, at headlight for vehiclesUnder automatic control state, by Weather information, temporal information and the current automobile geographical location information periodically collected,Light intensity value is calculated, and then being turned on and off for headlight for vehicles is controlled according to light intensity value, in entirely control processIn without light sensor, and then can be to avoid the rapid wear for the headlight for vehicles automatic control system being made of light sensorBad problem being capable of continue working to ensure that headlight for vehicles control system is hardly damaged.
Term " first " and " second " in description and claims of this specification and above-mentioned attached drawing etc. are to be used for areaNot different objects, rather than for describing specific sequence.In addition term " comprising " and " having " and their any deformations,It is intended to cover and non-exclusive includes.Such as it contains the process of series of steps or unit, method, system, product or setsIt is standby not to be set in the step of having listed or unit, but the step of may include not listing or unit.
A kind of headlight for vehicles control method is provided in embodiments of the present invention, and this method is opened by control headlight for vehiclesIt opens or the controller of shutoff operation executes.Fig. 1 is referred to, this method may comprise steps of：
S11, in the case where headlight for vehicles is in automatic control state, periodical acquisition control factor information, wherein governing factorInformation includes Weather information, temporal information and current automobile geographical location information.
Headlight for vehicles on off state is typically referred in the case where headlight for vehicles is in automatic control state is in automatic (Auto) gearWhen, the acquisition of governing factor information will not be carried out if the control of headlight for vehicles uses manual control, to avoid the wasting of resources.In practical applications, controller would know that the on off state of outside connected switch connected to it determines whether headlight for vehicles is handled automaticallyUnder state of a control.
In the case where headlight for vehicles is in automatic control state, since the real-time control of headlight for vehicles to be realized then needs periodicityAcquisition control factor information, i.e., the real-time acquisition control factor information in a controlling cycle.If certain user or drivingPersonnel only need the timing automatic control of headlight for vehicles, then can carry out adopting for governing factor information in range at the appointed timeCollection.For example, the actual conditions of user are to be not necessarily to use headlight for vehicles on daytime, then it can be true by the acquisition time of governing factor informationIt is set in the time range corresponding to night, within this time range periodical acquisition control factor information.
Wherein, governing factor information includes mainly Weather information, temporal information and current automobile in embodiments of the present inventionGeographical location information.Weather information may include the information for describing same day weather condition, for example, cloudy, fine, rain, snow, mist, haze etc.Information；Temporal information may include the information such as sunrise time, the sunset time on the same day of current time and acquisition acquisition；CurrentlyAutomobile geographical location information may include the location information that positioning system obtains, wherein positioning system here can be GPS(GlobalPositioning System, global positioning system), BEI-DOU position system, base station location system etc. are used for objectThe electronic system of positioning.In practical applications, Weather information and temporal information can be by being obtained by the multimedia system of networkingAnd it exports to controller.
S12, a governing factor information is often acquired, is believed according to Weather information, temporal information and current automobile geographical locationBreath, is calculated light intensity value.
Specifically, after collecting governing factor information every time, due to each governing factor (such as Weather information, whenBetween information, current automobile geographical location information) all have an impact to light intensity value, so calculating light intensity can be consideredValue.Corresponding parameter preset is arranged in the different situations that may be, for example, each governing factor, therefore can be according to each controlFactor obtains corresponding parameter preset, then according to preset light intensity value calculation formula, each governing factor is correspondingParameter preset is updated in the preset light intensity value calculation formula, corresponding light intensity value can be obtained, as vapourVehicle headlight is automatically controlled according to condition.
When carrying out governing factor the setting of parameter preset, need to be configured according to concrete application environment, for example,When the correspondence parameter of Weather information is set, influence of the geographic area to weather is needed to refer to, so as to which more accurate day is arrangedGas information parameter.
S13, the current switching-state information of headlight for vehicles is obtained, and according to switching-state information, light intensity value and pre-If opening being turned on and off for threshold value control headlight for vehicles.
Before carrying out headlight for vehicles control unlatching or control closing, need to obtain the current switch shape of headlight for vehiclesState information.Because more accurate headlight control triggering can be carried out according to the current switching-state information of headlight for vehicles, avoid providingSource wastes.For example, if current headlight for vehicles is in open state, if being sentenced according to light intensity value and default threshold value of openingWhat is had no progeny is the instruction for controlling headlight for vehicles and opening, and since headlight for vehicles has been in open state, then is not necessarily to send out againOpen command is sent to control headlight for vehicles unlatching.
It is that the light intensity value that will be calculated compares with the default threshold value of opening that the default purpose for opening threshold value, which is arranged,Compared with, if the state of headlight for vehicles is to close at this time, if light intensity value at this time be less than it is default open threshold value if generate correspondenceOpen signal, to control the unlatching of headlight for vehicles.If the state of headlight is to open, and the light intensity value being calculated is notLess than default unlatching threshold value, corresponding shutdown signal is generated, with the closing of control dress headlight for vehicles.Due to being in headlight for vehiclesIn the case of automatically controlling, the acquisition of governing factor information is carried out in real time, so when headlight for vehicles is opened, ifMeet open state in a period of time then persistently to open, until open state is unsatisfactory for or headlight is turned off manually just in driverCarry out closing headlight.Equally, then continuously off if being unsatisfactory for open state in the case of headlight for vehicles is closed, it can be by drivingThe person of sailing, which manually controls, to be opened.
It should be noted that the quantity for presetting unlatching threshold value in practical applications can be one, can also be two.When default unlatching threshold value is one, automobile is controlled in conjunction with the light intensity value being calculated according to this default threshold value of openingHeadlight is turned on and off；When it is default to open threshold value be two when, one of them is default open threshold value control headlight for vehicles fromIt is used when opening closing, another default threshold value of opening is used when controlling headlight for vehicles from closing to opening, this basisOn the one hand the state of headlight for vehicles, which sets two default threshold values of opening, can more precisely control unlatching or the pass of headlight for vehiclesIt closes, on the other hand also can preferably meet the requirement of sense of user, improve the experience effect of user.
It should be noted that the acquisition control factor information and to obtain headlight for vehicles current in above-mentioned S12 and S13 stepsPrecedence relationship is simultaneously not present in the step of switching-state information, and it is current that headlight for vehicles can be obtained after first acquisition control factor informationSwitching-state information can also first obtain acquisition control factor information after the current switching-state information of headlight for vehicles, if setIt is standby allow in the case of can also obtain governing factor information and the current switching-state information of headlight for vehicles, the present invention couple simultaneouslyThis is not limited.
The headlight for vehicles control method provided through this embodiment passes through in the case where headlight for vehicles is in automatic control stateWeather information, temporal information and the current automobile geographical location information periodically collected, is calculated light intensity value, intoAnd headlight for vehicles is controlled according to light intensity value and being turned on and off, without light sensor during entire control,And then it can be to avoid the flimsy problem for the headlight for vehicles automatic control system being made of light sensor, to ensure that vapourVehicle headlight control system is hardly damaged, being capable of continue working.
A kind of method calculating light intensity value is additionally provided in embodiments of the present invention, and referring to Fig. 2, this method includes：
S121, determine weather characteristics value according to preset first correspondence, the first correspondence characterize Weather information withCorrespondence between weather characteristics value.
Weather information is had recorded in preset first correspondence, and (namely Weather information is default with weather characteristics valueParameter) mapping relations, Weather information is characterized by numerical value in this way so that the light intensity value being finally calculated is moreIt is accurate to add.
For example, the first correspondence is expressed as formula (1)：
A kind of representation method of first correspondence is provided in above-mentioned formula (1), mainly by Weather information according toLight visibility is divided, and the higher Weather information of visibility is configured with the relatively high weather characteristics value of numerical value, rightAnswer by state of weather such as visibility lower Weather informations such as sandstorm, mist, haze, be configured with the relatively low weather of numerical valueCharacteristic value can preferably carry out the calculating of light intensity value using Weather information in this way.It can be combined in concrete application regionLocal geographical environment and climate characteristic adjusts accordingly the corresponding weather characteristics value of Weather information, to adapt to a variety of weathersWith the variation of geographical environment.
S122, determine temporal characteristics value according to preset second correspondence, the second correspondence characterize temporal information withCorrespondence between temporal characteristics value.
Temporal information includes sunrise time, sunset time, float time and current time in the present embodiment, wherein rootTemporal characteristics value is determined according to preset second correspondence, including：
According to sunrise time and float time, target sunrise time is calculated；
According to the magnitude relationship between current time, target sunrise time, sunset time, temporal characteristics value is determined.
Temporal information in the present embodiment further includes other than including sunrise time, sunset time and current timeWhy float time, include float time, is because sunrise and sunset time are calculated by the track of the tracking sunThe time for obtaining, but being calculated can than truly feels some are slightly different, for example, the sunrise time of one day is 6：10, but the people in some area would generally be 6：40 or so just may feel that the irradiation of daylight.Therefore, in the present embodimentTarget sunrise time is calculated by setting float time so that final light intensity value is accurately calculated.
A kind of representation of second correspondence is provided in the present embodiment, referring to formula (2)：
In formula (2), Δ t represents float time, T1 represents sunrise time, and T2 represents sunset time, when T0 represents currentBetween, also, float time can be flexibly arranged according to region and season information etc. in specific application environment.
Certainly when headlight for vehicles control method provided by the invention is applied in certain specific regions, floating can not also be setTime, such as the sunrise time being calculated using universal method in the country or area for closing on equator and localityThe time for experiencing sunrise of people is almost the same, it is possible to be not provided with float time, directly according to sunrise time, at sunsetBetween, the magnitude relationship between current time determine temporal characteristics value.
S123, determination category of roads information corresponding with current automobile geographical location information.
S124, determine that position feature value, third correspondence characterize category of roads information according to default third correspondenceWith the correspondence between position feature value.
Specifically, the correspondence between automobile geographical location information and category of roads information can be prestored, then may be usedIt is determined and current automobile geographical location information according to the correspondence between automobile geographical location information and category of roads informationCorresponding category of roads information, or know that the category of roads corresponding to current automobile geographical location information is believed according to navigation informationBreath.Position feature value is determined by the correspondence of category of roads information and position feature value in the present embodiment.For example,A kind of representation method of third correspondence is provided in formula (3)：
Above formula (3) merely provides a kind of possibility form of third correspondence, mainly according to running car on the way whenIt is divided with the presence or absence of shelter in category of roads information corresponding to preceding automobile geographical location information, the shelter is mainIt is to be defined to automotive visibility with the presence or absence of blocking in vehicle traveling process.In formula (3), urban road refers toThe category of roads of have no occluder, can also be by its corresponding position characteristic value in the case of have no occluder certainly for rural road conditions1, and the both sides of certain backroads, there may be dense trees, this backroad can be divided into half occlusion area.HavingCan flexibly it be arranged in the application environment of body, as long as ensuring compliance with above-mentioned division requirement.
Certainly, third correspondence can also be the corresponding pass between current automobile geographical location information and position feature valueSystem, can prestore or be arranged automobile geographical location and position feature by analyzing automobile geographical location informationCorrespondence between value, and then directly according to collected current automobile geographical location information combination third correspondence, directlyIt connects to obtain position feature value.
S125, according to weather characteristics value, temporal characteristics value and position feature value, light intensity value is calculated.
By the description of above-mentioned specific example, weather characteristics value W, temporal characteristics value T, geographic location feature value are being obtainedAfter P, formula (4) can be calculated according to preset light intensity, light intensity value Q is calculated.
Q=0.2W+0.6T+0.2P (4)
Above-mentioned formula (4) is a kind of realization provided in this embodiment may, wherein and 0.2 and 0.6 is empirical coefficient,Flexibly it can be arranged and be adjusted in the specific application process.
Embodiment illustrated in fig. 2 is when calculating light intensity value, since position feature value is corresponding with category of roads information, and it is rightIn overpass etc. blocks and does not influence the car owner visual field temporarily the case where, category of roads information can't change, so finallyThe light intensity value estimated will not be blocked and be changed because of the interim of overpass, headlight for vehicles more will not therefore occurThe problem of maloperation, this extends the service life of headlight for vehicles lighting system, is more advantageous to energy conservation and environmental protection.
In another embodiment of the invention, step S13 may include：
The current state of headlight for vehicles is determined according to switching-state information；
When headlight for vehicles is currently at open state, if light intensity value is more than or equal to default unlatching threshold value, controlClosing automobile headlight does not operate if light intensity value is less than default unlatching threshold value and (controls headlight for vehicles to continue on)；
When headlight for vehicles is currently at closed state, if light intensity value is more than or equal to default unlatching threshold value, do not graspMake and (control headlight for vehicles to continue to close), if light intensity value is less than default unlatching threshold value, controls unlatching headlight for vehicles.
It should be noted that the above embodiment is only a kind of specific implementation mode in the embodiment of the present invention, in this hairIn bright embodiment specific implementation process, above-mentioned steps S13 can also have other embodiment, for example, it is also possible to determining light extractionWhen line intensity value is more than or equal to default unlatching threshold value, the current state of headlight for vehicles is determined according to switching-state information, works as automobileWhen headlight is currently at open state, then closing automobile headlight is controlled, when headlight for vehicles is currently at closed state, then not graspedMake；When determining that light intensity value is less than default unlatching threshold value, the current shape of headlight for vehicles is determined according to switching-state informationState does not operate then when headlight for vehicles is currently at open state, when headlight for vehicles is currently at closed state, then controlsOpen headlight for vehicles.
A kind of method that headlight for vehicles is opened in control in advance is further comprised in embodiments of the present invention, including：
Obtain the navigation routine information of automobile；
There are specific closed area and automobile and specific enclosed areas on corresponding travel route in navigation routine informationWhen the distance between the entrance in domain reaches target range, a governing factor information is often acquired, according to current automobile geographical locationInformation calculates the distance between the entrance of automobile and specific closed area, according to the current driving speed of automobile and automobile with it is specificThe arrival entry time of automobile is calculated in the distance between entrance of closed area；
When reaching entry time less than or equal to preset time threshold, headlight for vehicles is opened in control.
For example, the navigation routine of automobile can be obtained by the navigation system of networking first, according to the navigation of automobileRoute may determine that the region that automobile will travel to, if automobile will drive into tunnel or underground parking etc. and specifically closeRegion, in order to ensure that the safety of automobile needs to open headlight for vehicles in advance before entering these specific closed areas.ExampleSuch as, when running car is extremely target range apart from the specific closed area entrance distance such as tunnel face or underground parking, soThe distance between automobile and specific closed area entrance X are calculated according to current automobile geographical location information afterwards, utilized simultaneouslyThe current driving speed v obtained by the navigation system of networking, is calculated when according to formula (5) when entering specific closed areaBetween when being less than or equal to preset time threshold 5 seconds, control headlight for vehicles is opened.
X/v≤5 (unit：Second) (5)
Be in the above-described embodiment by speed be calculated reach the entry time time after, will reach entry time withPreset time threshold is compared the control instruction for being opened headlight for vehicles in advance.There can also be other embodiments,For example, often acquiring a governing factor information, automobile and specific closed area are calculated according to current automobile geographical location informationThe distance between entrance, when the distance between automobile and the entrance of specific closed area are less than pre-determined distance, vapour is opened in controlVehicle headlight.Since the scheme of the embodiment of the present invention can open headlight for vehicles before automobile enters specific closed area, soDrive safety can be improved.
A kind of headlight for vehicles control method provided through the embodiment of the present invention compares the automatic headlamp illumination system of orthodox carThe scheme of system eliminates optical sensor, reduces cost, avoids the headlight for vehicles automatic control system being made of light sensorFlimsy problem being capable of continue working to ensure that headlight for vehicles control system is hardly damaged.By acquiring weather letterBreath, temporal information and current automobile geographical location information, have been calculated light intensity value, have been realized according to the light intensity valueIt is automatically controlled to what headlight for vehicles was turned on or off.It can be to short due to combining geographical location information in the embodiment of the present inventionTemporarily there is a situation where blocking flexibly to be controlled, and without opening the control of headlight when may be implemented to block temporarily so that automobileThe control of headlight is more accurate.
It is corresponding, a kind of car headlight control device is additionally provided in embodiments of the present invention, and referring to Fig. 3, which canTo include：
Acquisition module 10 is used in the case where headlight for vehicles is in automatic control state, periodical acquisition control factor information,In, the governing factor information includes Weather information, temporal information and current automobile geographical location information；
Computing module 11 is believed for often acquiring the primary governing factor information according to the Weather information, the timeBreath and the current automobile geographical location information, are calculated light intensity value；
Control module 12, the switching-state information current for obtaining the headlight for vehicles, and according to the on off stateInformation, the light intensity value and default threshold value of opening control being turned on and off for the headlight for vehicles.
Optionally, the computing module 11 may include：
First determination unit, for determining weather characteristics value according to preset first correspondence, described first corresponds to passSystem characterizes the correspondence between the Weather information and the weather characteristics value；
Second determination unit, for determining temporal characteristics value according to preset second correspondence, described second corresponds to passSystem characterizes the correspondence between the temporal information and the temporal characteristics value；
Third determination unit, for determining category of roads information corresponding with the current automobile geographical location information；
4th determination unit, for determining position feature value according to preset third correspondence, the third, which corresponds to, closesSystem characterizes the correspondence between the category of roads information and the position feature value；
Computing unit, for according to the weather characteristics value, the temporal characteristics value and the position feature value, calculatingTo the light intensity value.
Optionally, the control module 12 may include：
Status determining unit, the current state for determining the headlight for vehicles according to the switching-state information；
First judging unit, for when the headlight for vehicles is currently at open state, if the light intensity value is bigIt in equal to the default unlatching threshold value, then controls and closes the headlight for vehicles, if the light intensity value is less than described preset and opensThreshold value is opened, then is not operated；
Second judgment unit, for when the headlight for vehicles is currently at closed state, if the light intensity value is bigIt in equal to the default unlatching threshold value, does not then operate, if the light intensity value is less than the default unlatching threshold value, control is openedOpen the headlight for vehicles.
Optionally, further include：
Route acquiring module, the navigation routine information for obtaining automobile；
Time computing module, there are specific enclosed areas on corresponding travel route in the navigation routine informationWhen domain and the automobile and the distance between the entrance of the specific closed area reach target range, the primary control is often acquiredFactor information processed, according to the current automobile geographical location information calculate the automobile and the specific closed area entrance itBetween distance, according between the current driving speed of the automobile and the automobile and the entrance of the specific closed area away fromFrom the arrival entry time that the automobile is calculated；
Open control module, for when the arrival entry time is less than or equal to preset time threshold, institute to be opened in controlState headlight for vehicles.
Optionally, second determination unit includes：
Object time computation subunit, for according to the sunrise time and float time, target to be calculated at sunriseBetween, the temporal information includes sunrise time, sunset time, float time and current time；
Temporal characteristics value determination subelement, for according to the current time, the target sunrise time, it is described at sunsetBetween between magnitude relationship, determine the temporal characteristics value.
Car headlight control device provided in an embodiment of the present invention passes through in the case where headlight for vehicles is in automatic control stateWeather information, temporal information and the current automobile geographical location information periodically collected, is calculated light intensity value, intoAnd headlight for vehicles is controlled according to light intensity value and being turned on and off, without light sensor during entire control,And then it can be to avoid the flimsy problem for the headlight for vehicles automatic control system being made of light sensor, to ensure that vapourVehicle headlight control system is hardly damaged, being capable of continue working.
The apparatus embodiments described above are merely exemplary, wherein the unit illustrated as separating component canIt is physically separated with being or may not be, the component shown as unit may or may not be physics listMember, you can be located at a place, or may be distributed over multiple network units.It can be selected according to the actual needsIn some or all of module achieve the purpose of the solution of this embodiment.Those of ordinary skill in the art are not paying creativenessLabour in the case of, you can to understand and implement.
Each embodiment is described by the way of progressive in this specification, the highlights of each of the examples are with otherThe difference of embodiment, just to refer each other for identical similar portion between each embodiment.For device disclosed in embodimentFor, since it is corresponded to the methods disclosed in the examples, so description is fairly simple, related place is said referring to method partIt is bright.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.Various modifications to these embodiments will be apparent to those skilled in the art, as defined hereinGeneral Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the inventionIt is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase oneThe widest range caused.