Video camera
Technical field
The utility model relates to the digital camera field, relates in particular to a kind of video camera.
Background technology
In the security protection TV monitor system, the raising of Along with people's security precautions, increasing to the demand of the 24 hours continuous monitorings in important place, the utilization rate of infrared integrated camera is also increasingly high.Yet existing remote infrared zoom all-in-one infrared lamp can not change angle and adjustment brightness according to the make a video recording depth of field size of all-in-one of zoom.
In the thermal camera field, the angle of infrared lamp and the size of camera lens must be mated just each other can embody optimum efficiency, and the employed camera lens of remote infrared all-in-one all be mostly adopt zoom lens satisfy closely, in, monitor demand at a distance.At present; The infrared lamp of cured type can not change according to the difference of the multiple of camera lens zoom, can only take the mode of compromising, or select low-angle infrared lamp for use; Optically focused just appears under in-plant monitoring environment so easily; Just so-called flashlight effect causes image exposure, has influenced imaging effect; The infrared lamp of angle in selecting for use, but light source is too diffusing like this, infrared lamp is penetrated not far, and distance is had a greatly reduced quality, and has influenced infrared effect.
The utility model content
The utility model embodiment technical problem to be solved is; A kind of video camera is provided; Be provided with the infrared LED lamp of large, medium and small three kinds of different angles; Through synchronous control system control, the lens location of effectively discerning video camera is also controlled the on off state and the brightness value of the infrared LED lamp of three kinds of different angles in view of the above.
In order to solve the problems of the technologies described above; The utility model embodiment has proposed a kind of video camera, comprises the LED lamp group of the infrared LED lamp that is provided with different angles and is connected to control the synchronous control system of the infrared LED lamp work of specified angle in the said LED lamp group with this LED lamp group circuit.
Further, said synchronous control system comprises lens driving unit, digital signal processing unit and LED control unit, and said lens driving unit, digital signal processing unit, LED control unit link to each other successively.
Further, said digital signal processing unit is the DSP processing unit.
Further, said LED lamp group comprises the infrared LED lamp of large, medium and small three kinds of different angles.
Pass through synchronous control system; Effectively discern the lens location of video camera; And control the on off state and the brightness value of infrared LED lamp of large, medium and small three kinds of different angles of LED lamp group in view of the above; The zoom multiple that makes camera lens in the video camera work is opened the infrared LED lamp of corresponding angle automatically and is adjusted its brightness value automatically, to guarantee the nighttime imaging effect of video camera not simultaneously.
Description of drawings
Fig. 1 is the structural representation of the video camera of the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing, embodiment is elaborated to the utility model.
With reference to Fig. 1, the video camera of the utility model embodiment mainly comprises LED lamp group and the synchronous control system that is connected with this LED lamp group circuit.
Said synchronous control system comprises lens driving unit 1, digital signal processing unit 2 and LED control unit 3, and said lens driving unit 1, digital signal processing unit 2, LED control unit 3 link to each other successively.
Said digital signal processing unit 2 is the DSP processing unit.
Said LED lamp group is provided with the first infrared LED lamp 4, the second infrared LED lamp 5 and the 3rd infrared LED lamp 6 and links to each other with said LED control unit 3 respectively.
Above-mentioned video camera operation principle roughly is described below:
The lens location of said lens driving unit 1 identification video camera; And become digital data transmission to give said digital signal processing unit 2 the lens focus information translation that it recognizes; Said digital signal processing unit 2 receives the correlated digital signals of said lens driving unit 1 transmission and after analyzing, exports the control command of opening or closing the infrared LED lamp of corresponding angle in the said LED lamp group; And open or close the infrared LED lamp of corresponding angle in the said LED lamp group according to control command by said LED control unit, adjust its brightness simultaneously automatically.
Among the embodiment of the utility model, the said first infrared LED lamp 4 is a dipped headlights, and the said second infrared LED lamp 5 is the middle distance lamp, and said the 3rd infrared LED lamp 6 is remote lamp.
When the camera lens zoom multiple that collects when the lens driving unit 1 of said synchronous control system is in little multiple; The control command that the said first infrared LED lamp 4 of unlatching is closed other infrared LED lamps is simultaneously analyzed and exported to 2 pairs of received digital signals of said digital signal processing unit; Said LED control unit 3 is opened the said first infrared LED lamp 4 and is adjusted its brightness automatically according to the control command that receives, and closes the second infrared LED lamp 5 and the 3rd infrared LED lamp 6 simultaneously; When the camera lens zoom multiple that is collected when said lens driving unit 1 mediates multiple; The control command that the said second infrared LED lamp 5 of unlatching is closed other infrared LED lamps is simultaneously analyzed and exported to 2 pairs of received digital signals of said digital signal processing unit; Said LED control unit 3 is opened the said second infrared LED lamp 5 and is adjusted its brightness automatically according to the control command that receives, and closes the first infrared LED lamp 4 and the 3rd infrared LED lamp 6 simultaneously; When the camera lens zoom multiple that is collected when said lens driving unit 1 is in big multiple; The control command that said the 3rd infrared LED lamp 6 of unlatching is closed other infrared LED lamps is simultaneously analyzed and exported to 2 pairs of received digital signals of said digital signal processing unit; Said LED control unit 3 is opened said the 3rd infrared LED lamp 6 and is adjusted its brightness automatically according to the control command that receives, and closes the first infrared LED lamp 4 and the second infrared LED lamp 5 simultaneously.
The synchronous control system of the video camera of the utility model embodiment is according to different lens focus; Open the infrared LED lamp of different angles and be adjusted to suitable brightness automatically; Efficiently solve problems such as remote thermal camera optically focused is not concentrated, monitoring range is little, imaging effect is not good, improved the night vision effect and the coefficient of safety of video camera.
The above is the embodiment of the utility model; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; Can also make some improvement and retouching, these improvement and retouching also are regarded as the protection range of the utility model.