Several requirements that cannot be ignored for monitoring installation:
1. Location requirements
For the surveillance camera, its position is directly related to the imaging effect of the device. Therefore, many users regard the monitoring effect as the primary reference for the installation location of the surveillance camera. However, they ignored one very important point: the surveillance camera has its own requirements when choosing the installation location. First, the installation location is to avoid the interference of the surrounding environment and achieve the impact of good photography and survival of Geng. When installing in the indoor environment, try to ensure that the height of the equipment is not less than 2.5 meters. In the outdoor environment, the monitoring equipment should also be placed 3.5 meters above the ground. Otherwise, whether from the perspective of camera self-protection or device monitoring, there will be a lot of fu side effects. Only after considering these basic issues can we consider the angle.
2. Installation angle
It is mainly divided into cylindrical type and hemispherical type. Tube type is common, including indoor and outdoor; The hemispherical form is generally indoor, small in size, and can be wall mounted or ceiling mounted.
Security monitoring Attention should also be paid to the angle when installing cameras in the project. For ordinary cameras with limited dynamic functions, direct light source should be avoided and backlight should not be installed. The principle and method of camera backlight compensation adjustment are introduced! Monitoring during installation video camera It must be fixed firmly to prevent the picture from shaking. For the wall, the impact drill can be used to drill holes to block the blockage, and then the self tapping screw can be used to fix the bracket on the wall. For the ceiling, you can place the wood block on the top, and screw the wood block through the ceiling through self tapping. There is also a key problem: the selection of camera mounting bracket should also be noted.
Outdoor supports shall be selected as far as possible. The cost is not high, but the drag coefficient varies greatly. The wireless bridge knows to use thick brackets, and the camera chooses such brackets. If the wind is a little strong, the position of the camera will change immediately.
3. Installation height
The installation height of the monitoring camera should not be too low to prevent malicious damage by others, or too high to avoid inconvenience in future maintenance. It is recommended that the installation height be 3~4m, and the ladder can be used for installation. In addition, if the camera is installed on a high pole, later maintenance must be considered. For example, a ladder can be mounted on a vertical pole. The cost of renting aerial vehicles is very high. At the same time, due to the high installation height of the surveillance camera, it is necessary to use ladders and other auxiliary tools. Therefore, when climbing the ladder, Yi must pay attention to the safety to prevent the danger caused by falling from high altitude. For higher positions, the full belt of an shall be fastened before construction.
4. Electric power
The surveillance camera needs separate power supply. When conducting high current wiring, attention should also be paid to an full. We can use a multimeter and a stylus to test to ensure that the power is connected after the power is cut off. In addition, when installing outdoor surveillance cameras, it is necessary to do a good job of fang water treatment. Purchase a network surveillance camera with a fan tail line. In addition, a small fang water box can be installed under the surveillance camera, and the power supply and connector can be placed in the fang water box.
Pay attention to lightning protection. In areas prone to lightning strikes, the monitoring camera must be well protected against lightning strikes. Video lightning protection module and power module can be used for lightning protection.
There are two power supply modes: DC power supply and Poe power supply. Compared with DC power supply, Poe power supply only needs to connect Poe Switch Or Poe network Digital Video Recorder It can supply power, making construction and maintenance more simple and convenient.
Non Poe power supply: Each camera needs a lot of wires, network cables, PVC sleeves, sockets, and security power accessories. The lines are messy, the installation is complex, and the maintenance is not easy.
Poe power supply: one camera, one network cable, data and power transmission at the same time, simple and convenient.
Compared with the two power supply modes, Poe power supply is simpler, and the cost may be lower than non Poe power supply.
5. Requirements for lighting environment
When using the surveillance camera at night, in order to avoid reflection and shadow, lighting equipment is usually required, and infrared lamps can be used instead of ordinary bulbs. However, users must use black and white surveillance cameras and network surveillance cameras with infrared lighting equipment, because black and white surveillance cameras are very sensitive to infrared light, while color surveillance cameras cannot play infrared functions.
Nowadays, many cameras have begun to use wide dynamic function to improve their imaging ability in backlight environment, but this does not mean that cameras can continue to work in strong light environment. Because under strong light, direct strong light is easy to make it difficult for the camera to locate an accurate image, leading to the decolorization of the color filter on the sensor chip, which makes the camera appear stripes on the monitored image.
Therefore, if possible, we should try to keep the camera in "smooth" mode, but in any case, we should avoid direct stimulation of the camera lens by strong light for a long time.
If you want to monitor at night, you must use IPC with good night vision effect. Night vision distance is mainly determined by the amount of infrared light. The single lamp night vision distance is 30 meters, and the double lamp night vision distance is 50 meters.
6. Cables and connectors:
For the network camera, its line erection mode is significantly richer than that of traditional analog equipment. However, no matter which transmission mode is used, interference is one of the problems we must pay attention to. Especially for the wired transmission of video signals, the signal line and high-power line in the same direction transmission is undoubtedly a taboo in the process of stringing. For the convenience of construction, they are not allowed to be placed in the same transmission line pipe.
Even if they cannot be separated due to environmental constraints, they must be at least half a meter away. Only in this way can Geng avoid the impact of strong magnetic interference on video transmission. For devices using wireless signal transmission, there are few restrictions on the line.
However, the camera itself should avoid surrounding strong magnetic interference sources. At the same time, ensure the insulation between the camera and the ground. In addition, attention shall be paid to avoiding the influence and obstruction of the line on PTZ work. The national standard network cable is 0.5 diameter oxygen free copper, gold-plated crystal head, the RVV 2 * 0.5 armored wire power line is 30 meters, the RVV 2 * 0.75 armored wire power line between 30 - 50 meters, the RVV 2 * 1.0 armored wire power line above 50 meters and PVC threaded tube are usually sufficient. Underground or explosion-proof galvanized steel pipe.
7. Installation of equipment accessories
In addition to some complete aspects mentioned above, the installation specifications of some camera auxiliary equipment are also a link that we cannot ignore in the construction. For example, in order to make the installation position of the camera swing plate, rack and other equipment meet the design requirements, the installation should be stable and firm, easy to operate and maintain. The rear distance between the frame and the wall shall meet the maintenance requirements; Bi If necessary, the camera shall be equipped with a protective cover or a temperature control device.
For links with complex lines, the purpose and characteristics of each line should also be noted for future maintenance. These are the key links we need to pay attention to when building a simple network monitoring system. Compared with some complex large-scale monitoring systems, these aspects are obviously more simple and intuitive.
But from a key point of view, these can be said to be lifeline links that affect the working quality of the camera, and cannot be ignored. Only when we grasp these important but easily ignored elements mentioned above, can we enjoy a more convenient network monitoring effect.
Wuxi Dehang Technology Co., Ltd., founded in 2010, is a professional computer network system integration and weak current engineering service company.
For many years, the company has been committed to information system integration, Internet/Intranet software development, building a technical service network covering Quan country, and providing a complete set of solutions for large, medium and small users such as early planning, scheme design, application development, system installation and debugging, and personnel training of information systems and weak current systems. So far, it has provided hundreds of large and medium-sized computer network systems and weak current engineering solutions in the fields of finance, insurance, securities, power, banking, civil aviation, railway, water conservancy, petrochemical, national defense, customs, telecommunications, scientific research institutions, etc.
