Many friends in the background asked about the problem of network monitoring inexplicably dropped, today just have time, and everyone to talk about it. Previous analog monitoring, if there was no signal, was either a line problem or a monitoring failure. Nowadays, the network camera has no problem with the line, and the monitoring head itself has no problem. It also has a fault after the IP is automatically changed.
Surveillance camera has dropped the problem, the general situation is: brand video recorder + assembly head + remote access. Usually we use the video recorder Haikang or Dahua, the assembly head is the cottage head (for example, we talked about how to assemble the camera ourselves), and sometimes we buy the cheaper ones that others assemble and sell.
The reason for the large market of Haikang video recorders is that Haikang's fluorite cloud is convenient and stable for a large reason, but Haikang's monitoring head is much more expensive than the assembly head. All the many engineering companies will reduce the cost. Select the assembly head.
Although the Haikang video recorder is also compatible with the onvif protocol and is compatible with the assembly monitor head, the Haikang video recorder is definitely better for its own brand, and there are more optimizations in protocol matching.
So we usually Haikang Haikang, Dahua + Dahua, other + other! Relatively speaking, it is relatively reliable and reliable!
If you are a combination of Haikang video recorder + assembly head, the camera IP address will automatically change after a period of time, then you need to re-add IP, when you add it again, you need to pay attention to these points:
1. When debugging and installing, do not connect to the existing network, set a fixed IP address directly, and then start adding channels.
2, add the channel, write down the IP address of each channel, and then enter the camera web configuration interface through the browser of the computer.
3. Turn off the camera's DHCP and change it to a static IP address. If you have the function of automatically adapting to IP, you need to turn it off.
4. Finally, the existing network is connected to the monitoring system, and then the router is registered, and the IP address and MAC address of the camera are bound.
The reason the surveillance camera is set to a static IP address is that if it is not a static IP, once the camera is offline, the camera will automatically obtain another new IP address through the router.
The IP address and MAC address of the camera are bound in the router. The reason is that the IP address will be assigned to other network devices by the router in order to prevent the camera from being offline.
Therefore, when we newly install the network monitoring system, we must fix the IP address of the camera and video recorder, so that the gold may avoid the inexplicable disconnection of the camera.
In general, some metal sheets are formed by hand or die stamping to produce plastic deformation, forming the desired shape and size, and can be further welded or a small amount of mechanical processing to form more complex parts.
Stamping process is a kind of metal processing method, which is based on the plastic deformation of metal, and USES the mould and stamping equipment to apply pressure on the Sheet Metal, so that the sheet metal produces plastic deformation or separation, so as to obtain the parts (stamping parts) with certain shape, size and performance.
Stamping forming technology in automobile body manufacturing process occupies an important position, especially large automobile body covering parts, because the most complicated shape, the structure of large size, some still space curved surface, and surface quality requirement is high, so use stamping processing method is used to make these parts can't be matched by other processing methods.The cab of the truck, the Sheet Metal Parts in the front of the truck, the van board, the various body coverings of the car and the various skeleton of the bus are almost all made by stamping.