急求相关安防系统设计英文文章资料（5000字左右）

急求相关安防系统设计英文文章资料（5000字左右）

Formation of project
4.1 Construction of the system
4.1.1 Anti-theft Alarm System
XX building in this anti-theft alarm system design, from the preventive point of view of rigor, this time against divided into two parts, one elevator, the main entrance; second floor 8 and 11 key sectors, by microwave infrared detectors to monitor Shuangjian to prevent the illegal invasion. In this system, set the alarm detection points were 107, 107 alarms in the detection of points, divided into two parts: one is the building's public areas and major regional blockade, a total of 24, this part; The other departments of the office building in some key sectors blockade, a total of 83
All detectors from the centralized control of security center. Therefore in this XX Building Alarm System control unit necessary alarm system on large bus control system.
4.1.2 CCTV subsystem
XX buildings in this CCTV system design, video monitoring points were set 57, including six all-round monitoring points, 47 fixed monitoring, elevator control point 4. In the control center, on one hand the screen on the wall need to be able to switch the display based on demand for any area of the image need to monitor and support the various series switch, fixed switching functions, on the other hand must also support video surveillance points in all images the whole video, so in this system, the CCTV building monitoring system XX analog + digital combination form.
Simulated in part by the large matrix switching control console and the 21-inch color monitor 100HZ screen walls, and so constitute the composition of the digital part of the digital hard disk recording system +21-inch color display, etc., and relying on digital hard disk recording system in the analog matrix switching control, analog and digital part of the seamless integration of video images so as to see and control network remote carved to provide a video service platform. According to the analysis, in this XX CCTV building monitoring system, large
Matrix switch control unit 128 into the 24's matrix switching control system; screen wall composition in 8 +1 mode, which from 8 sets of 21-inch color flat screen monitor 100HZ one a 37-inch color monitor, plasma composition; Digital hard disk recording system consists of 2 sets of 24 and a platform 16 composed of the number of hard disk recorders.
4.1.3 Intelligent Integrated Control Subsystem
An important sector for integrated security systems, CCTV surveillance systems and burglar alarm system is the integrated security system must be built in the subsystem.
Established in previous systems, the closed-circuit television monitoring system and burglar alarm system independent control and operation, coordinated control between the two subsystems are linked by means of each system output, input devices, the physical line connection through the red tape to achieve, In this system, the need for point-point linkage of the anti-theft alarm and video monitoring points of the large number
Need to implement the linkage function: burglar alarm points, video surveillance points related to the image after the alarm automatically switch to the specified screen wall monitors to display, alarm points, points related to video surveillance images automatically after the alarm for alarm recording and so on. If using the traditional input / output module to complete the linkage of these functions, the existence of the following questions: First, a number of linked devices, equipment costs are high (need 107 Alarm output switch matrix 107 Input module, digital 107 hard drive video recording system of digital input module); Second,
Complicated physical connection (required to achieve a linkage output module and two digital input modules of the physical line connection, the physical number of lines needed to complete the most conservative value is 237, if the need to implement anti-theft alarm points associated with multi-channel video surveillance point function, you need to complete the physical line connection of the number will more); Third, poor maintenance (the completion of all the linkages to the physical line, if a road linkage Chuxianwenti, in the maintenance, if than becoming involved early in the construction, maintenance staff in a short time is unlikely to solve the problem); 4 is adjustable poor (in the
The whole system after the process of delivery, according to the actual use situation require time to adjust the relationship between the linkage, if the physical line of Lianjie constitute Shu Xi, Ze is difficult to achieve our established the linkage relationship between tuning functions); 5 yes bad scalability (in the daily use of the process, need for additional related anti-theft alarm points and video surveillance points, and to achieve capacity expansion after the relevant linkage feature, you also need with related linkage equipment, and again through the red tape of the physical circuit connected to achieved, resulting in the expansion of the system, the poor scalability).
Jie He above analysis, from the system's intelligence point of view, in this system, recommended a comprehensive security management platform, through a simple physical circuit connection (needs to be done there are two physical circuit: anti-theft alarm host and integrated security RS232 connection between the management platform line, matrix switching control and integrated security management platform for the host's RS232 connection between the lines), relying on the related agreements, to achieve anti-theft alarm system and CCTV monitoring system linkage between the multi-functionality. Through integrated security management platform
CCTV monitoring system also allows control of multimedia operations, anti-theft alarm system on-line control and real-time information display, various information such as real-time recording function.
4.1.4 Network Control Subsystem points
XX building with the Syndicated news of this meeting to establish security systems, point of view from day to day 管理, must Shezhi network distribution control system, enabling remote image transfer related 领导 to see and control capabilities for related Zeren led Xuncha and management.
4.2 Solutions
According to the established project requirements analysis and project analysis, combined with its existing security technology, we are building for this XX Integrated Security Systems Design proposed the following solution:
Based on the analysis of project requirements for the system, CCTV monitoring subsystem, the front-end monitor on-site monitoring points the way through the coaxial cable transmit video signals and control signals sent back to the ball machine control room, in the control room via video divider into two video signals, all the way into the analog matrix switch control computer, the other way into the digital video disk recording system for the whole simulation matrix monitor output signal output to the screen wall, which in the control center on the control points real-time monitoring. The anti-theft alarm points based on the actual site conditions, access to different bus devices,
The bus device mounted on the RS485 bus, RS485 bus access to the master control center of the bus zone management console, enabling centralized control and alarm system management. In the Master Control Centre, set up a comprehensive security management platform, relying on integrated security management platform, complete linkage and control functions, for the anti-theft alarm system and CCTV monitoring system set up between an intelligent bridge, which will be CCTV system and burglar alarm system combined with organic. XX buildings for the whole security management to provide a strong guarantee.
4.3 System Application Technical Analysis
4.3.1 Network
In the digital security of the formation process, the whole system of building the carriers network, at the earliest digital construction process, due to network bandwidth, digital construction used in the compression technology, network switch features such as a number of reasons, have Digital Security System will cause serious impact on network performance impact. In the digital high-speed development today, the above suspect had repeatedly got resolved, mainly in the following points:
a) the rapid development of network switches, solve the shortage of network bandwidth and switching capacity is inadequate;
b) video compression technology in hardware and software development to solve the video stream transmission in the network the problem of high-bandwidth occupied, the current mainstream theory of H.264 compression technology, transmission bandwidth occupied by the value of only 125Kbps;
c) multicast network protocol video streaming application to solve the repeated occupation of the bandwidth in the network situation, even more than the same time transfer the image to see the same way, in the network, the video stream occupying the only way video stream bandwidth.
4.3.2 Stability of Integrated Security Management Platform
Relying on the computer platform for integrated security management platform to run, because of its computer hardware and WINDOWS based operating system built, but its located in the whole system is a connecting link of the link, and thus the stability of integrated security management platform is must be considered a problem. For this problem, we issue the following aspects to avoid the occurrence and rapid processing problems: First, stable and reliable computing platform uses the brand products, so as to ensure the stable operation of the hardware platform; Second, after the end of the system debugging,
Make the entire system backup and data backup; third is to provide complete system contingency measures to ensure that the anomalies occurred in the shortest possible time to resume running.