The increasingly widening of the application of monitoring, hemisphere cameras with the advantages of concealment of the convenience of installation and debugging, monitoring, are widely used in indoor monitor, such as condole top, the light changes is small.

Hemisphere camera application analysis

The small size of hemisphere cameras, beautiful shape, commonly used in elevators, hallways, cash register, the gate area, etc.

1, the elevator

Because the elevator in the box, there is enough light, so the hemisphere camera minimum illumination 1 lux, clarity or greater or less than 420 lines, but had better choose color video camera, if you can support manual aperture, manual focus, wide Angle lens, the best focal length suggested in 2.8 3.0 mm.

As the elevator goes up and down, power line, and adopt ac frequency conversion speed regulation technology and particularity. This creates a lot of problems for wiring and anti-jamming. Again because the cable with an elevator, there will be a middle gravity and lead to the phenomenon of bending, deformation, which can cause cable electrical parameters change, cause impedance mismatch, video attenuation increases and the signal reflection occurs, thus resulting in a decline in video signal SNR and video disturbance. So should choose good shielding, good flexible, wire diameter thick cable, such as SYVVV coaxial cable; And try to reduce parallel with other cable strapping, distance from its appropriate, avoid the video signal interference. The camera power supply generally need to dc power supply from the main control room, it also can avoid the disturbance of power supply.

2, the corridor,

Corridor no matter day or night, the light is enough, even, so you can choose a fixed manually fixed focus lens, aperture and low illumination of more than 420 line 1 lux, clarity or greater or less wide-angle color hemisphere cameras. If there are any light slow change and intensity of illumination is very low, had better choose automatic aperture, wide-angle infrared camera hemisphere. And when installation, should be installed as far as possible in the near the stairs, so you can see people in and out of the situation; Also consider the equipment security, not artificial damage easily.

3, the door

Door generally the light changes very unstable, so choose automatic aperture, automatic focusing, narrow Angle fixed focus, wide dynamic (color) or infrared hemisphere camera is better, so that you can avoid differences in door inside and outside light, exposure or whitish phenomenon.

Hemisphere camera installation and maintenance

Hemisphere camera specifically to the autocratic camera + designed with automatic aperture manual zoom lens, sealed performance is excellent ball cover and precision of the camera mounting bracket hemisphere camera. Its biggest characteristic is cameras, lenses and installation system as a whole, exquisitely designed and easy to install.

1, be familiar with the product performance

Engineering after dealers and users get the hemisphere camera products, should be familiar with the product technical parameters, such as how much is the input voltage, power, what is the function, etc., try to be in there.

2, check the

Before the installation, should hemisphere camera for testing and adjusting, the camera is in normal working condition.

3, installation

Before the construction, can according to the environment and safety, aesthetics, etc, the wall or hoisting installation, etc.

4, installation Angle

Hemisphere camera installation Angle directly affect the monitoring the range of the image, so when installation need to press more field needs to operate. If less than 6 meters installed at the entrance to the village, the camera Angle preferably is 30 ° to 60 °; If installed at the checkout counter, the camera Angle should be considered in the plus or minus 15 ° ~ 20 ° and so on. All in all, the emergence of the camera as much as possible to avoid backlight camera case, this can be as much as possible to meet customer requirements.

5, good video interface processing

Hemisphere camera video signal output port, the power input ports, the control signal is more important, when installation should as far as possible to waterproof, and anti oxidation treatment. In order to avoid instability in the future, uncontrolled, even does not display the image of the phenomenon.

Camera typically require 24-hour non-stop work, so the repair and maintenance of the camera, can prolong the service life of the camera and safeguard the stability of the camera image effect, specific attention should be paid to the following points.

, the camera should be paid attention to voltage stability, otherwise it will affect the effect of the image, and even lead to the camera is damaged;

Often check whether the wire is damaged, aging, avoid the occurring of abnormal;

, should avoid direct sunlight or strong light for a long time as far as possible, lest cause damage of the CCD camera;

, often need to clean of hemisphere cameras, such as always clean up the camera shell surface dust, try not to open the enclosure, such as the need to open, the first power;

Establish archives for the camera, in order to convenient for inspection, testing in the future.