Novice must-have video surveillance system engineering installation knowledge

In order to facilitate the common problems that can be solved in the actual installation of the monitoring, this article summarizes several important and confusing problems in the monitoring and installation process, which is convenient for everyone to master.

Question 1: How high is the camera?

It is recommended that the indoors be no less than 2.5 meters and the outdoor should be no less than 3.5 meters. These figures are simple, but take into account the indoor height and the angle of the lens under pressure, and also take into account the length of the outdoor installation and the factors that prevent human damage.

Question 2: What are the recommendations for bracket installation?

When installing the camera, there are two choices of wall loading and lifting. The indoor environment of the supermarket is more hoisted, and the wall is generally selected for outdoor use. Generally, the lighter machine can be used with a common bracket, but in the case of a heavier machine, it is recommended that the customer use a bracket with a large load. The weight of the camera must be considered to prevent the camera from tilting or falling for a long time.

Question 3: What kind of machine should I choose for indoor and outdoor?

Machines with different choices of environment should also be different.

Better indoor decoration

For example, indoor coffee shops, boutiques, hotels and other areas with better decoration, should consider the dome camera for aesthetic reasons, so it looks more beautiful.

Special place for indoor environment

However, some environments such as grain and oil stores, hardware stores, and hot pot restaurants are indoors, but they have to choose guns. This can effectively prevent dust, water vapor, soot from entering the machine and affecting the use of the machine.

Outdoor environment

For the outdoor environment, of course, the gun and the ball machine can highlight its powerful defense function, and it can guarantee its normal function in windy and rainy days. .

Question 4: What are the recommendations for power usage?

It is recommended that no matter what machine you need to use the power supply, the price is higher than the power supply, but this type of power supply is stable, and there are few after-sale problems.

Question 5: What are the recommendations for the camera illumination angle?

The camera should pay attention to the angle of the machine after the image is taken out. Some customers look good during the day after installation. In the evening, the picture will appear dark, half white and black, and the middle will be black. These are related to the angle. Avoid installing the lens too much during installation. High, wall-mounted machines should not have more than 1/4 of the white wall appear in the picture, the choice of lens should be appropriate (such as 3.6mm and 4mm irradiation 6-8 meters, 6mm suitable for 12-14 meters, 8mm for 20- 30 meters distance), if you can't remember how to choose the lens, here is a simple way to teach the lens millimeter multiplied by 2 to choose, and then according to the specific problems of the environment. The effect of the front-end part is generally not bad.

If you do not consider the avoidance of obstacles in front and the choice of installation angle, there will be a lot of screen display problems, resulting in the picture quality is suddenly good or bad.

Question 6: What are the precautions in the transmission part?

Choose high quality wire to reduce rework. In fact, the most troublesome part is the transmission part, whether it is the network cable or the fiber, the material selection is too bad or improper use will have many problems.

Case number one

Previously, a customer pulled a hundred and twenty meters with a network cable of more than 100 points during the installation. As a result, the NVR could not search for IPC. Later, I changed the line of the high grade, and found that the tail light flashed slowly, still no image, and finally changed the better oxygen-free copper wire to be completed. Therefore, the wire is not good, and it is still caused by their own rework, and the time and effort will not reach the goal of saving money.

Case 2

There is a customer to monitor the installation of a factory. The customer pulls two optical fibers to two workshops. Each workshop uses two pairs of one light and six electric transceivers. When it was just installed, it was good. Then a certain transceiver appeared. The four heads are dropped from time to time. Every day after two or three hours, they will connect themselves. The position of the camera has been changed. The power has been changed. Except that the fiber does not move, the adjustment and replacement will not work. Finally, There is no way, the technology thinks of a way, add a switch on the other normal transceiver, lead a line to the problematic transceiver, discard the original line, the result is good! Although trouble, it is always solved. Who can think that the good fiber tested has a problem? !

Question 7: The camera with a large number of installations is dropped, how to troubleshoot?

If the camera with a large number of installations is dropped, it is necessary to observe that only one of them is lost or lost. Some of the switches are dropped. If there is only one of the frequent ones, it may be that the machine has The problem can be upgraded or restored. If the switch is not fixed, the switch resources are insufficient. It is recommended to replace the Gigabit switch (recommended TP-link, D-link, Huawei, Huawei 3). When you drop them together, you have to consider the switch and the line.

Question 8: What are the precautions when accessing the front-end IPC?

For a place with a small monitoring area, if only 2-3 IPCs are installed, the customer prefers to directly connect to the router, and then the computer installs the software to display it. It is not recommended to use more than 3 computers.

The use of video recorders is not recommended for full load. One is afraid of occupying too many resources of the video recorder. Second, if the user wants to increase later, if the front is full, the back-end equipment needs to be replaced, and waste is avoided. Of course, these are all in advance. It is necessary to explain to the customer. Storage above, I tend to monitor the dedicated hard disk, now the price of the mechanical disk of the monitoring dedicated disk and desktop computer is almost the same, the special disk is more stable, and the second is the warranty time for more than one year, why not.

In short, the installer should also quickly understand the equipment, a new machine should be connected to get the most out of each function, professional focus, a good seller must be a good technician or a theoretical technician. When installing a set of monitoring equipment, we must first grasp the environment and quantity. Regardless of the size of the project, each one is regarded as a model project, and we do our best to do our best. The reputation is accumulated in this way. The customer also accumulates in this way, and the value of the brand is also improved. of.