Comparison between network camera and analog camera and solution of fiber fusion

Surveillance has become more and more important in life, and installation monitoring is a very tiring thing, and there are still different skills. The early monitoring was mainly based on simulation, of course, there are now, but relatively less used, the current trend is mainly to install network monitoring.

What is the difference between installing a surveillance probe analog camera and a network camera?

Same point:

Some of the materials are the same, the mounting brackets are all using 12V power supply, the power supply interface of the camera is generally 12V power interface, generally using video recorders.

difference:

1. The interface of the camera is different. The analog monitor connector uses the BNC connector; the web camera uses the crystal head, which is the network cable for connection.

2, the wire is different: analog monitoring uses coaxial lines, and network cameras use network cables.

3. The video recorder is different: the video recorder interface used for analog monitoring is the interface of the BNC connector. In order to realize networking, the analog video recorder also has a network interface. Of course, a capture card can be added to the computer to record the surveillance video through the computer; The interfaces are all network cable interfaces.

4, the transmission distance is not the same: the analog monitoring using the coaxial line, generally within 300 meters can see the monitoring picture, and the line can be directly connected in the middle, but the final display effect may appear distortion of the picture. For a webcam that uses a network cable, the best cable distance is no more than 100 meters, otherwise the video may not be visible.

Other experience sharing:

1. About optical fiber: Regardless of the webcam or analog camera, fiber can be used in long-distance image transmission. Network and analog monitoring When using fiber optic transceivers, there are corresponding switching devices, and the network mainly uses switches, and analog monitoring also has corresponding devices, as shown in the following figure.

What should I do if there is a problem with the fusion of the fiber?

(1), you can find someone to help with the fusion fiber, pay some fees, it is best to use hot melt, it is impossible to consider cold connection.

(2), do not use optical fiber, you can consider using the corresponding amplifier, analog monitoring amplifier, 500 meters SYV-75-5 coaxial cable are no problem, you can clearly see the monitoring screen, this is the Xiaobian encountered the most Long-distance analog monitoring, whether it can be further distance has not been tried.

Network monitoring can also be achieved using a network amplifier. An amplifier can be installed at the camera to amplify the maximum transmission distance of the network cable to about 300 meters.

Only the increase in these devices will increase the cost relative to the use of optical fibers.

(3), you can also directly purchase the optical fiber finished line, but this needs to look at the effect of welding, many of the purchased finished lines, the fusion is mainly cold-connected, some quality is not very good, just bought back is not feasible, Therefore, you need to pay attention when purchasing the finished fiber line.

Regarding the POE power supply analog monitoring, there is no POE power supply, and only one power supply can be pulled separately.

The network monitor can use a video recorder with a POE power supply. In this case, it is only necessary to pull a network cable from the video recorder to the video recorder separately, without re-pulling the power supply. If you do not use a recorder with POE power supply, you can also use a switch with POE power supply, which can also supply power to the camera.