Intelligent security and smart home profit space which big?
Security monitoring system components - security monitoring system is a growing attention of new professionals, the current development of view, the application of more and more popular, scientific and technological content is getting higher and higher. Almost all high and new technology can promote its development, especially the advent of the information age, but also to provide an opportunity for the development of the profession. But as far as the monitoring industry is concerned, the system composition has not been clearly divided, which makes communication between the engineering company and the user talking about the security monitoring system very inconvenient.
The security monitoring system, according to the different functions of system components, the whole security monitoring system is divided into seven layers: presentation layer, control layer, processing layer, transport layer, execution layer, support layer, data acquisition layer. Of course, because of the increasing integration of devices, for some systems, some devices may exist in the system at the same time as multiple layers.
I. presentation layerPerformance city is our most intuitive feel, it shows the quality of the entire security monitoring system. Such as surveillance TV wall, monitor, treble alarm horn, alarm, automatic answering telephone and so on, all belong to this layer.Two. Control layerThe control layer is the core of the whole security monitoring system, and it is the most clear embodiment of the system's scientific and technological level. Usually we have two control modes analog control and digital control. Analog control is an early control mode, and its console is usually composed of a controller or analog control matrix. It is suitable for small and local security monitoring system. This control method has low cost and low failure rate. But for large and medium-sized security monitoring systems, this approach appears to be complex and without any price advantage. At this time, we have a better choice of digital control. Digital control is the industrial computer as the control core of the monitoring system, it will complex analog control operation into a simple mouse click operation, the huge analog controller stack shrunk into a computer, control cable will be complex and huge number into a serial line. It can change remote monitoring into reality and provide possibility for Internet remote monitoring. But digital control is not so perfect, the price of the control host is very expensive, the waste of modules, the system may collapse, the crisis is still lagging behind and so on.
