With more and more monitoring personnel, for newcomers who have just joined the industry, they may first start from the installation of equipment at the grassroots level, gradually gain experience in practice, become a project manager who can independently be responsible for the project, then monitor camera installation. What should be paid attention to in the process of camera security protection?
Monitor the installation can not ignore the points:
1, location needs
For surveillance cameras, the location is directly related to the imaging effect of the device. Therefore, many users regard the monitoring effect as the primary reference for monitoring the installation position of the camera. However, they ignore the very important point: surveillance cameras are not omnipotent. In terms of installation location, it also has its own requirements. First, in the installation position, in order to enable the camera to avoid interference from the surrounding environment, realize a Better photo and survival effects. When installing indoors, we should ensure that the height of the equipment is not less than 2.5 meters, and in the outdoor environment, we should also place the monitoring equipment at a height of more than 3 meters from the ground. Otherwise, whether it is from the camera self-protection or equipment monitoring, there will be many negative effects. Only after considering these basic questions, the angle is the aspect we consider.
2, installation angle
There are two main types: cylindrical and hemispherical. Among them, the cylinder type is relatively common, and it is common indoors and outdoors; the hemisphere type is generally used indoors, and the volume is small, and it can be installed by wall hanging or ceiling.
Monitoring camera installation should also pay attention to the angle problem. For ordinary cameras without wide dynamic function, avoid direct light source, do not install backlight, and adjust the principle and method of backlight compensation. The surveillance camera is fixed firmly during installation to prevent camera shake. For the wall, you can use the impact drill to hit the eye, plug the plug, and then use the self-tapping wire to fix the bracket to the wall. For the ceiling ceiling, you can put the wooden block on the top and let the self-tapping wire screw through the ceiling into the wooden block. There is a key issue: the choice of camera mounting brackets should also be noted.
Outdoors try to choose outdoor special brackets, it can't cost a few dollars, but the wind resistance coefficient is very different. The wireless bridge knows to use a thick bracket, while the camera chooses such a bracket, which is a little bit of wind and grass. The position immediately changed.
3, the installation height
The installation height of the surveillance camera should not be too low, to prevent malicious damage from others, nor too high, and it is not convenient for future maintenance. It is recommended that the installation height be three or four meters, you can get it by stepping on a ladder, and if the high pole is installed. The camera should be considered for post-maintenance. For example, it is possible to install ladders in the poles. Renting aerial work vehicles is a very expensive thing. At the same time, because the installation height of the surveillance cameras is high, it is necessary to use auxiliary tools such as ladders. Therefore, it is necessary to pay attention to safety when climbing ladders. It is dangerous to prevent falling from high altitude. For higher positions, fasten the seat belts and then carry out the construction.
4, electricity safety
The surveillance camera needs to be powered separately. When performing strong electrical wiring, it should also pay attention to safety. It can be tested with a multimeter and a test pencil to ensure that the power is turned off after the power is cut off. Waterproof treatment, purchase a network surveillance camera with a waterproof tail. Alternatively, install a small waterproof case under the surveillance camera and place the power supply and connectors in a waterproof case.
Pay attention to lightning protection and lightning-hit areas. Surveillance cameras should be protected against lightning strikes. Video lightning protection modules and power modules can be used for lightning protection.
There are two kinds of power supply modes: DC DC power supply and POE power supply. The PoE power supply is powered by the DC power supply. It only needs to be connected to the PoE switch or the PoE network hard disk recorder to supply power. The construction and maintenance are simpler and more convenient.
Non-PoE power supply: Each camera needs wires, network cables, PVC bushings, sockets, security power supplies... a lot of accessories, wiring is troublesome, installation is complicated, and maintenance is not easy.
PoE power supply: a camera with a network cable, data and power transmission at the same time, simple and convenient.
Compared with the two power supply modes, PoE power supply is more compact and the cost may be lower than that of non-PoE power supply.
5, the needs of the lighting environment
In order to avoid reflections and shadows when using surveillance cameras at night, lighting equipment is usually required, and infrared lamps can be used instead of ordinary light bulbs. However, users must use black and white surveillance cameras and network surveillance cameras with infrared lighting because black and white surveillance cameras are more sensitive to infrared light, while color surveillance cameras are not capable of infrared.
Nowadays, many cameras have begun to adopt wide dynamic functions to enhance their imaging capabilities in backlight conditions. However, this does not mean that the camera can continue to work in a strong light environment. Because under the glare of the strong light, the direct glare easily causes the camera to locate the accurate image normally, which eventually causes the color filter on the sensor wafer to discolor, causing the camera to appear streak in the monitoring image.
Therefore, if possible, we should make the camera in a "smooth" mode as much as possible, but in any case, we must avoid direct stimulation of the camera lens by glare for a long time.
In order to monitor the night, you have to use IPC with good night vision. The night vision distance is mainly determined by the number of infrared lamps. The night vision distance of a single lamp is 30 meters, and the night vision distance of a double lamp is 50 meters.
6, cable and connector:
For network cameras, its line erection is obviously more abundant than traditional analog devices. However, no matter which transmission method is used, interference is one of the problems we have to pay attention to. Especially for the video signal transmitted by cable, the same direction transmission of the signal line and the high-power wire is undoubtedly a taboo in the wiring process, and it is not allowed to put the two in the same transmission line tube for the convenience of construction.
Even if you are unable to separate the two even if they are restricted by the environment, you must ensure a separation distance of at least half a meter. Only such a plan can better avoid the influence of strong magnetic interference on video transmission, but for devices using wireless signal transmission, although there are fewer restrictions on the line.
However, the camera itself should also avoid the surrounding sources of strong magnetic interference. At the same time, the camera is insulated from the ground. In addition, we must also pay attention to avoiding the influence and obstacles of the line on the work of the platform. Adopting oxygen-free copper 0.5 wire diameter national standard network cable, gold-plated crystal head, RVV 2*0.5 sheathed wire within 30 meters of power cable, RVV 2*0.75 sheathed wire for 30-50 meters, RVV 2* for 50 meters or more 1.0 sheathed wire, the threading pipe is generally made of PVC, if it is buried or explosion-proof, galvanized steel pipe is used.
7, the installation of equipment accessories
In addition to some of the complete aspects mentioned above, some of the camera's auxiliary equipment installation specifications are also part of our construction. For example, to make the installation position of the camera head, rack and other equipment meet the design requirements, the installation should be stable and stable, easy to operate and maintain. The back and side of the rack should be in line with the maintenance requirements; if necessary, we need to install a protective cover or temperature control device on the camera.
For the links with complex lines, we should also indicate the usefulness and characteristics of each line for future maintenance and grooming. The above mentioned are the key points we need to focus on when setting up a simple network monitoring system. . These aspects are obviously much simpler and more intuitive than some complex large-scale monitoring systems.
However, from a critical point of view, these can be said to be the lifeblood link that affects the quality of camera work. It cannot be ignored. Only when we grasp the important but easily overlooked elements mentioned above can we enjoy even more. Convenient network monitoring results.
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