Since the digital monitoring has a long-distance transmission, it is easy to organize complex networks, video processing flexo, and breaks through the spatial limit of the monitoring area, extends the monitoring line. Its development has gradually formed the following modes:
1) Single machine (PC board) monitoring. Single-machine monitoring does not have a network function, just simply implement data collection, compression, storage, and playback. Its application occasion is generally in the family, small-scale monitoring.
2) Networked (N standby) monitoring. Compared to single-machine monitoring, network monitoring has a prototype that realizes large-scale cluster monitoring. On a single machine monitoring, remote transmission of video can be implemented. Its application occasions are generally large in the group, prison, and banks. However, from the current development, the road to cluster monitors is still far away.
3) Single machine embedded monitoring. Monitoring is made with pure hardware compared to PC monitoring. It has stable, reliable advantages. However, it is generally difficult to achieve the full real-time effect, and usually does not have a network transmission function. In addition, the product is mostly single 4 channels.
4) Single STAND-Alone embedded monitoring. Can operate independently, with RJ45 network transmission interface, RS232 PTZ control interface. Generally only one way is provided, or 4 channel selection 1 is implemented.
PC (or industrial computer) board mode is the mainstream technology of today's monitoring. This model has a low threshold, and the market competition is extremely fierce. Many small companies can introduce the market by purchasing foreign board and corresponding software. Some professional monitoring companies must invest a large number of developers to develop software and boards, not only pushing slow market speed, but the price advantage has waters without departure. The remaining only after-sales service advantages. But let customers agree with your service and need to put and time. Therefore, the market is unlessly development, directly leading to professional monitoring companies to face a survival crisis. Under this technical and market, large-scale digital monitoring fields have become a virgin that has not yet reclaimed and has great potential.
Large-scale digital monitoring can generally be divided into two forms. One is centralized monitoring, one is a cluster monitoring. The respective models of the two forms and the application status will be described below.
(to be continued)
