CN101959023A - Light control system - Google Patents
Light control system Download PDFInfo
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- CN101959023A CN101959023A CN2010100427507A CN201010042750A CN101959023A CN 101959023 A CN101959023 A CN 101959023A CN 2010100427507 A CN2010100427507 A CN 2010100427507A CN 201010042750 A CN201010042750 A CN 201010042750A CN 101959023 A CN101959023 A CN 101959023A
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- light
- control system
- light intensity
- polariscope
- polariscopic
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Abstract
The invention provides a light control system which comprises a polarizer, an optical sensor and a control board. The control board comprises a first end, a second end, a third end, a fourth end, a fifth end and a light intensity detection end, wherein the first end is used for inputting a main power supply and adjusting and controlling the position of the polarizer, the second end is used for detecting the position of the polarizer, the third end is connected with an AC power supply, the fourth end is connected with an external switching power supply, the fifth end is connected with an external host, and the light intensity detection end is connected with the optical sensor. The light control system of the invention can be used for directly controlling parameters of a camera, such as an exposure gain, and the like based on the environmental light intensity, solves the problem of indirect corresponding relation between control input and a controlled amount when controlling an exposure gain mode by using a time parameter and can take favorable image effect.
Description
Technical field
The invention belongs to field of cameras, particularly a kind of light control system that is used for emphasizing whole video camera exposure gain that is arranged in the protective cover according to ambient light.
Background technology
In fields such as traffic security monitorings, in order to solve camera gain and the camera review effect is controlled in the isoparametric control of exposure, general solution may be that segmentation on a time period is provided with parameters such as the gain of video camera and exposure.
The problem that this scheme exists is that it is not that direct luminous environment according to the external world is provided with camera parameters, exposure and gain may cause picture overexposure or dark partially, and the angle of irradiation such as each local each period sunlight also all is different, so each place all is provided with the mapping table of cover time and parameter possibly, even so can not solve the influence that Changes in weather etc. is brought, so can not obtain desirable image effect.
Summary of the invention
In order to solve the above-mentioned technical problem of prior art switch, be necessary to provide a kind of light control system that can adjust the exposure gain automatically that is applicable to the varying environment light intensity.
A kind of light control system, it is characterized in that: comprise polariscope, optical sensor and control board, described control board comprises first end, second end, the 3rd end, the 4th end, five terminal and light intensity test side, wherein first end is used for main power source input and described polariscopic position adjustment control, second end is used to detect described polariscope position, and the 3rd end connects AC power, and the 4th end connects the external switch power supply, five terminal connects external host, and the light intensity test side connects described optical sensor.
Compared to prior art, light control system of the present invention comprises polariscope and optical sensor, it is isoparametric directly to control video camera exposure gain based on environmental light intensity, control input and controlled volume do not have the problem of direct corresponding relation when having solved parameter control exposure service time gain mode, can obtain the preferable image effect.
Description of drawings
Fig. 1 is the system schematic of a better embodiment of light control system of the present invention.
Embodiment
Below in conjunction with Figure of description embodiment of the present invention is described further.
Seeing also Fig. 1, is the system schematic of a better embodiment of light control system of the present invention.
Light control system of the present invention can be arranged in the protective cover of outdoor pick-up machine, and it comprises polariscope, optical sensor and control board.Described control board comprises the first end J1, the second end J2, the 3rd end J3, the 4th end J4, five terminal J5 and light intensity test side U4, wherein the first end J1 is used for main power source input and described polariscopic position adjustment control, the second end J2 is used to detect described polariscope position, the 3rd end J3 connects AC power, the 4th end J4 connects the external switch power supply, the 5th J5 connects external host, and light intensity test side U4 connects described optical sensor.Light control system of the present invention also comprises and is used to adjust polariscopic DC speed-reducing.
Wherein the J3 terminal inserts the 220V AC power, and the J4 terminal connects the input terminal of protective cover internal switch power supply.J1 terminal power supply is imported and the Electric Machine Control terminal, is used to the power supply control output end of input of light control system main power source and polariscope DC speed-reducing.Binding post J2 is as polariscopic position detecting switch, so that program can be known current polariscopic position, whether needs to carry out the action that polariscope is moved to active position or move to inoperative position with decision.The U4 terminal connects optical sensor, to detect outside light intensity.J5 is the communication serial port of light control system, but the receiving remote control command is carried out corresponding actions, the while normal work period, report current light intensity value and polariscopic positional information to external host, external host can be controlled the parameter of corresponding video camera by network interface or optical fiber according to this information, thereby has finished according to current external environmental condition by the isoparametric purpose of procedure auto-control video camera exposure gain.Wherein, polariscope is used for the filtering high light and avoids causing video camera imaging the problem of obvious high light spot to occur, and polariscope only just begins to work after greater than certain set point detecting light intensity, less than no longer working after certain set point.
Compared to prior art, light control system of the present invention comprises polariscope and optical sensor, it is isoparametric directly to control video camera exposure gain based on environmental light intensity, control input and controlled volume do not have the problem of direct corresponding relation when having solved parameter control exposure service time gain mode, can obtain the preferable image effect.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. light control system, it is characterized in that: comprise polariscope, optical sensor and control board, described control board comprises first end, second end, the 3rd end, the 4th end, five terminal and light intensity test side, wherein first end is used for main power source input and described polariscopic position adjustment control, second end is used to detect described polariscope position, and the 3rd end connects AC power, and the 4th end connects the external switch power supply, five terminal connects external host, and the light intensity test side connects described optical sensor.
2. light control system as claimed in claim 1, it is characterized in that: also comprise being used to adjust polariscopic DC speed-reducing, first end is as the main power source input and is used for the power supply control output end of polariscope DC speed-reducing, and second end is used for the current polariscopic position of advising process as polariscopic position detecting switch and whether needs to carry out the action that polariscope is moved to active position or move to inoperative position with decision.
3. light control system as claimed in claim 2 is characterized in that: the light intensity test side is by the outside light intensity of light sensors.
4. light control system as claimed in claim 3 is characterized in that: five terminal is the communication serial port of light control system, but the receiving remote control command is carried out corresponding actions, reports current light intensity value and polariscopic positional information, light intensity test side to external host simultaneously.
5. light control system as claimed in claim 4, it is characterized in that: polariscope is used for the filtering high light and avoids causing video camera imaging the problem of obvious high light spot to occur, it only just begins to work after greater than set point detecting light intensity, less than no longer working after the set point.
6. light control system as claimed in claim 5, it is characterized in that: external host can be controlled the parameter of corresponding video camera by network interface or optical fiber according to the information that five terminal provides, thereby has finished according to current external environmental condition by the isoparametric purpose of procedure auto-control video camera exposure gain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010100427507A CN101959023A (en) | 2010-01-12 | 2010-01-12 | Light control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010100427507A CN101959023A (en) | 2010-01-12 | 2010-01-12 | Light control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101959023A true CN101959023A (en) | 2011-01-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010100427507A Pending CN101959023A (en) | 2010-01-12 | 2010-01-12 | Light control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101959023A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103533250A (en) * | 2012-07-03 | 2014-01-22 | 索尼公司 | Control device, control method, and program |
| CN103575917A (en) * | 2013-10-15 | 2014-02-12 | 中国农业大学 | Multispectral image collecting method and device |
-
2010
- 2010-01-12 CN CN2010100427507A patent/CN101959023A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103533250A (en) * | 2012-07-03 | 2014-01-22 | 索尼公司 | Control device, control method, and program |
| CN103533250B (en) * | 2012-07-03 | 2018-01-26 | 索尼半导体解决方案公司 | Control device, control method and program |
| CN103575917A (en) * | 2013-10-15 | 2014-02-12 | 中国农业大学 | Multispectral image collecting method and device |
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Application publication date: 20110126 |