What are the main components of the global security system?
(1) emergency broadcasting system;(2) building intercom system;(3) entrance guard system;(4) gas fire fighting system(5) digital monitoring system(6) digital patrol system(7) parking management system;
The security system (Security & Protection, System, SPS) is to maintain social public security for the purpose of intrusion using security products and other related products of the alarm system, video monitoring system, a system of entrance control system, safety inspection; or by the system is the combination or integration of electronic a system or network.
(8) perimeter alarm system;(9) elevator five party alarm system;(10) centralized management system for keysFrom the classification dependency relationship:Video surveillance subsystem;Alarm subsystem;Guard patrol system;Voice intercom subsystem;Audio-visual broadcast subsystem;Intelligent analysis subsystem;Perimeter guard subsystem;Location and tracking subsystem;Power environment monitoring subsystemFor security system, according to the different functions of the system, we divide the whole security monitoring system into seven layers - presentation layer, control layer, processing layer, transport layer, execution layer, support layer and 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.1. presentation layerThe presentation layer is the most intuitive, and it shows the quality of the whole security monitoring system. Such as surveillance TV wall, monitor, treble alarm horn, alarm, automatic answering telephone and so on, all belong to this layer.
The 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. The simulation control method in the early stage, the console is composed of controller or analog control matrix, which is suitable for small local security monitoring system, this control method has lower cost, the failure rate is large but for some security monitoring system, it becomes too complicated operation and no price advantage, then we it should be the 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.3. treatment layerThe processing layer may be referred to as the audio and video processing layer, which will have the audio video signals sent by the transport layer to be allocated, enlarged, segmented, and so on, and organically connect the presentation layer to the control layer. Audio and Video Splitter, audio and video amplifier, video splitter, audio and video switcher and so on, all belong to this layer.
