谁帮我翻译一下这个??(必有重谢)
不要用网上翻译工具随便翻译,一定要准确.谢谢,翻译好的必有重谢.摘要全文详细的介绍了建筑电气中消防报警及联动系统的设计过程、闭路电视监控系统的设计过程和背景音乐系统的设计...
不要用网上翻译工具随便翻译,一定要准确.谢谢,翻译好的必有重谢.
摘 要
全文详细的介绍了建筑电气中消防报警及联动系统的设计过程、闭路电视监控系统的设计过程和背景音乐系统的设计过程。并以长春市税务局为例，对整个设计过程进行了详细说明。
本工程主体为地下一层，地上二十二层，总建筑面积22000平方米；本工程为一类高层建筑，消防系统保护对象分级为一级，采用控制中心报警系统，按两总线式设计。消防报警及联动系统是借助现代电子技术和计算机技术发展起来的一门新兴应用学科，是现代消防自动化工程的核心内容之一。消防报警及联动系统是人们为了早发现、通报火灾、并及时采取有效措施、控制和扑灭火灾的一种自动消防设施，是人们同火灾做斗争的有力工具。
闭路电视监控系统目前被广泛应用于国民经济的各个行业，属于安全防范系统的重要组成部分，应用范围广、技术成熟。随着数字化技术的发展，闭路监控系统也出现了一些新的产品和新的发展趋势。闭路电视监控系统设计是由摄像、传输、控制、显示四部分组成。从摄像机到监控主机为点对点的连接，以监控主机为中心构成星形网络。为了能够做到实时监控，当系统较大时由监视器组成电视墙。为达到长期保存现场录像的目的，一般还安装长延时录像机，并配备了大容量录像设备（数字硬盘录像监控系统）以备查询使用。
背景音乐又称公共广播，亦称PA(Public Address)广播。公共广播设于公共场所，平时播放背景音乐，且自动回带循环；发生火灾时，则兼作事故广播，指挥疏散。广播音响系统通常由四大部分组成：节目源设备、信号的放大和处理设备、传输线路和扬声器系统。
关键词 控制中心报警系统；火灾探测器；硬盘录象机；矩阵控制主机
翻译的好,我多追加分.肯定多加.. 展开
摘 要
全文详细的介绍了建筑电气中消防报警及联动系统的设计过程、闭路电视监控系统的设计过程和背景音乐系统的设计过程。并以长春市税务局为例，对整个设计过程进行了详细说明。
本工程主体为地下一层，地上二十二层，总建筑面积22000平方米；本工程为一类高层建筑，消防系统保护对象分级为一级，采用控制中心报警系统，按两总线式设计。消防报警及联动系统是借助现代电子技术和计算机技术发展起来的一门新兴应用学科，是现代消防自动化工程的核心内容之一。消防报警及联动系统是人们为了早发现、通报火灾、并及时采取有效措施、控制和扑灭火灾的一种自动消防设施，是人们同火灾做斗争的有力工具。
闭路电视监控系统目前被广泛应用于国民经济的各个行业，属于安全防范系统的重要组成部分，应用范围广、技术成熟。随着数字化技术的发展，闭路监控系统也出现了一些新的产品和新的发展趋势。闭路电视监控系统设计是由摄像、传输、控制、显示四部分组成。从摄像机到监控主机为点对点的连接，以监控主机为中心构成星形网络。为了能够做到实时监控，当系统较大时由监视器组成电视墙。为达到长期保存现场录像的目的，一般还安装长延时录像机，并配备了大容量录像设备（数字硬盘录像监控系统）以备查询使用。
背景音乐又称公共广播，亦称PA(Public Address)广播。公共广播设于公共场所，平时播放背景音乐，且自动回带循环；发生火灾时，则兼作事故广播，指挥疏散。广播音响系统通常由四大部分组成：节目源设备、信号的放大和处理设备、传输线路和扬声器系统。
关键词 控制中心报警系统；火灾探测器；硬盘录象机；矩阵控制主机
翻译的好,我多追加分.肯定多加.. 展开
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摘 要
Abstract:
全文详细的介绍了建筑电气中消防报警及联动系统的设计过程、闭路电视监控系统的设计过程和背景音乐系统的设计过程。并以长春市税务局为例，对整个设计过程进行了详细说明。
本工程主体为地下一层，地上二十二层，总建筑面积22000平方米；本工程为一类高层建筑，消防系统保护对象分级为一级，采用控制中心报警系统，按两总线式设计。消防报警及联动系统是借助现代电子技术和计算机技术发展起来的一门新兴应用学科，是现代消防自动化工程的核心内容之一。消防报警及联动系统是人们为了早发现、通报火灾、并及时采取有效措施、控制和扑灭火灾的一种自动消防设施，是人们同火灾做斗争的有力工具。
This text introduced the construction of the electrical and fire alarm system linked the design process nothing omitted, the CCTV monitoring system for the design process and background music system design process. And Changchun City, the Inland Revenue Department as an example, the entire design process is described in detail.
The main project for the underground level, ground floor, 22, a total construction area of 22,000 square meters, the project as a high-rise buildings, fire protection system for an object classification, alarm system control center used by the two bus. And fire alarm system is linked with modern electronic technology and computer technology to develop the application of an emerging science, modern fire service automation project is one of the core elements. And fire alarm system is linked to people early discovery, report the fire, and promptly take effective measures to control and fight the fire an automatic fire facilities, is to fight fire with the people a powerful tool.
闭路电视监控系统目前被广泛应用于国民经济的各个行业，属于安全防范系统的重要组成部分，应用范围广、技术成熟。随着数字化技术的发展，闭路监控系统也出现了一些新的产品和新的发展趋势。闭路电视监控系统设计是由摄像、传输、控制、显示四部分组成。从摄像机到监控主机为点对点的连接，以监控主机为中心构成星形网络。为了能够做到实时监控，当系统较大时由监视器组成电视墙。为达到长期保存现场录像的目的，一般还安装长延时录像机，并配备了大容量录像设备（数字硬盘录像监控系统）以备查询使用。
The CCTV monitoring system is now widely used in the national economy in various sectors, security systems are an important part of a wide range of applications, the technology is mature. With the development of digital technology, closed-circuit monitoring system there were also some new products and new trend of development. CCTV monitoring system designed by the camera, transmission, control, showed that the four components. From the camera to monitor the host for point-to-point connections, as the center console to monitor a star network. In order to achieve real-time monitoring, when the larger system of television monitors from the wall. In order to achieve long-term preservation of the purpose of the video scene, the general Chang Yanshi also installed video cameras and equipped with large-capacity video equipment (digital video monitoring system hard drive) to prepare for use.
背景音乐又称公共广播，亦称PA(Public Address)广播。公共广播设于公共场所，平时播放背景音乐，且自动回带循环；发生火灾时，则兼作事故广播，指挥疏散。广播音响系统通常由四大部分组成：节目源设备、信号的放大和处理设备、传输线路和扬声器系统。
Background music also known as public broadcasting, also known as the PA (Public Address) broadcasting. Public broadcasting in public places, usually play music and back with automatic cycle case of fire, accident Jianzuo Broadcasting, the command to evacuate. Audio broadcasting system normally four major components: source programming equipment, signal amplification and processing equipment, transmission lines and speaker systems.
关键词
控制中心报警系统；
火灾探测器；
硬盘录象机；
矩阵控制主机
Keywords
Alarm System Control Centre;
The fire detector;
Hard disk video recorders;
Matrix control console
Abstract:
全文详细的介绍了建筑电气中消防报警及联动系统的设计过程、闭路电视监控系统的设计过程和背景音乐系统的设计过程。并以长春市税务局为例，对整个设计过程进行了详细说明。
本工程主体为地下一层，地上二十二层，总建筑面积22000平方米；本工程为一类高层建筑，消防系统保护对象分级为一级，采用控制中心报警系统，按两总线式设计。消防报警及联动系统是借助现代电子技术和计算机技术发展起来的一门新兴应用学科，是现代消防自动化工程的核心内容之一。消防报警及联动系统是人们为了早发现、通报火灾、并及时采取有效措施、控制和扑灭火灾的一种自动消防设施，是人们同火灾做斗争的有力工具。
This text introduced the construction of the electrical and fire alarm system linked the design process nothing omitted, the CCTV monitoring system for the design process and background music system design process. And Changchun City, the Inland Revenue Department as an example, the entire design process is described in detail.
The main project for the underground level, ground floor, 22, a total construction area of 22,000 square meters, the project as a high-rise buildings, fire protection system for an object classification, alarm system control center used by the two bus. And fire alarm system is linked with modern electronic technology and computer technology to develop the application of an emerging science, modern fire service automation project is one of the core elements. And fire alarm system is linked to people early discovery, report the fire, and promptly take effective measures to control and fight the fire an automatic fire facilities, is to fight fire with the people a powerful tool.
闭路电视监控系统目前被广泛应用于国民经济的各个行业，属于安全防范系统的重要组成部分，应用范围广、技术成熟。随着数字化技术的发展，闭路监控系统也出现了一些新的产品和新的发展趋势。闭路电视监控系统设计是由摄像、传输、控制、显示四部分组成。从摄像机到监控主机为点对点的连接，以监控主机为中心构成星形网络。为了能够做到实时监控，当系统较大时由监视器组成电视墙。为达到长期保存现场录像的目的，一般还安装长延时录像机，并配备了大容量录像设备（数字硬盘录像监控系统）以备查询使用。
The CCTV monitoring system is now widely used in the national economy in various sectors, security systems are an important part of a wide range of applications, the technology is mature. With the development of digital technology, closed-circuit monitoring system there were also some new products and new trend of development. CCTV monitoring system designed by the camera, transmission, control, showed that the four components. From the camera to monitor the host for point-to-point connections, as the center console to monitor a star network. In order to achieve real-time monitoring, when the larger system of television monitors from the wall. In order to achieve long-term preservation of the purpose of the video scene, the general Chang Yanshi also installed video cameras and equipped with large-capacity video equipment (digital video monitoring system hard drive) to prepare for use.
背景音乐又称公共广播，亦称PA(Public Address)广播。公共广播设于公共场所，平时播放背景音乐，且自动回带循环；发生火灾时，则兼作事故广播，指挥疏散。广播音响系统通常由四大部分组成：节目源设备、信号的放大和处理设备、传输线路和扬声器系统。
Background music also known as public broadcasting, also known as the PA (Public Address) broadcasting. Public broadcasting in public places, usually play music and back with automatic cycle case of fire, accident Jianzuo Broadcasting, the command to evacuate. Audio broadcasting system normally four major components: source programming equipment, signal amplification and processing equipment, transmission lines and speaker systems.
关键词
控制中心报警系统；
火灾探测器；
硬盘录象机；
矩阵控制主机
Keywords
Alarm System Control Centre;
The fire detector;
Hard disk video recorders;
Matrix control console
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1:你就给50分，估计这个问题很难解决。
2：我大体看了一下，英语过了6级绝对没戏。我不是英语专业的，估计英语专业的能行吧，但是难度很大，里面的术语太多了。
3：不要灰心，还是靠自己吧，我给你转到一个朋友那儿，看看行不行。
2：我大体看了一下，英语过了6级绝对没戏。我不是英语专业的，估计英语专业的能行吧，但是难度很大，里面的术语太多了。
3：不要灰心，还是靠自己吧，我给你转到一个朋友那儿，看看行不行。
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In the full text detailed introduction construction electricity the fire prevention has reported to the police and the interlock system design process, the closed circuit television supervisory system design process and the background music system design process.And take Changchun Tax bureau as the example, has carried on the specify to the entire design process.
This project main body for underground one, ground 22, total floor space 22000 square meters; This project is a kind of high-rise construction, the fire prevention system protection object graduation is a level, uses the control center alarm system, according to two main line type design.The fire prevention reports to the police and the interlock system draws support from an emerging application discipline which the modern electronic technology and the computer technology develop, is one of modern fire prevention automation project core contents.The fire prevention reports to the police and the interlock system is people in order to discover early, the notification fire, and takes the effective action promptly, controls and suppresses the fire one kind of automatic fire facility, is the people same fire wages the struggle the powerful tool.
The closed circuit television supervisory system widely is applied at present in national economy each profession, belongs to the safety and protection system important constituent, the application scope broad, the technology is mature.Along with the digitized technology development, the close up supervisory system also appeared some new products and the recent trend of development.The closed circuit television supervisory system design is by the photograph, the transmission, the control, demonstrated four parts compose.To monitors the main engine from the camera for the point-to-point connection, take monitors the main engine as the central constitution star network.In order to can achieve the real-time monitoring, when the system is big is composed the bank of television monitors by the monitoring device.In order to achieve the long-term preserved scene video recording the goal, also installs the long time delay videocorder generally, and provided the large capacity image storage device (digital hard disk video recording supervisory system) to prepare the inquiry use.
The background music called the public broadcast, also called PA (Public Address) broadcasts.The public broadcast supposes in the public place, usually broadcasts the background music, also returns to the belt circulation automatically; When has the fire, then concurrently makes the accident to broadcast, the direction disperses.。The broadcast sound system by four major part is usually composed: The program source equipment, the signal enlargement and the handling equipment, transmit the line and the loudspeaker system.
Key word control center alarm system; Fire detector; Hard disk videocorder; Matrix control main engine
This project main body for underground one, ground 22, total floor space 22000 square meters; This project is a kind of high-rise construction, the fire prevention system protection object graduation is a level, uses the control center alarm system, according to two main line type design.The fire prevention reports to the police and the interlock system draws support from an emerging application discipline which the modern electronic technology and the computer technology develop, is one of modern fire prevention automation project core contents.The fire prevention reports to the police and the interlock system is people in order to discover early, the notification fire, and takes the effective action promptly, controls and suppresses the fire one kind of automatic fire facility, is the people same fire wages the struggle the powerful tool.
The closed circuit television supervisory system widely is applied at present in national economy each profession, belongs to the safety and protection system important constituent, the application scope broad, the technology is mature.Along with the digitized technology development, the close up supervisory system also appeared some new products and the recent trend of development.The closed circuit television supervisory system design is by the photograph, the transmission, the control, demonstrated four parts compose.To monitors the main engine from the camera for the point-to-point connection, take monitors the main engine as the central constitution star network.In order to can achieve the real-time monitoring, when the system is big is composed the bank of television monitors by the monitoring device.In order to achieve the long-term preserved scene video recording the goal, also installs the long time delay videocorder generally, and provided the large capacity image storage device (digital hard disk video recording supervisory system) to prepare the inquiry use.
The background music called the public broadcast, also called PA (Public Address) broadcasts.The public broadcast supposes in the public place, usually broadcasts the background music, also returns to the belt circulation automatically; When has the fire, then concurrently makes the accident to broadcast, the direction disperses.。The broadcast sound system by four major part is usually composed: The program source equipment, the signal enlargement and the handling equipment, transmit the line and the loudspeaker system.
Key word control center alarm system; Fire detector; Hard disk videocorder; Matrix control main engine
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才50分啊
Abstract
all of the text detailed introduction construction electricity fire warning and interlock system's design process, closed circuit television supervisory system's design process and background music system's design process. And take Changchun Tax bureau as the example, has carried on the detailed explanation to the entire design process.
This project main body for underground one, ground 22, total floor space 22000 square meters; This project is a kind of high-rise construction, the fire prevention system protection object graduation for first-level, uses the control center alarm system, according to two main line type design. The fire warning and the interlock system draw support from an emerging application discipline which the modern electronic technology and the computer technology develop, is one of modern fire prevention automation project central contents. The fire warning and the interlock system are people to discover early, the notification fire, and takes the effective action, the control and suppress a fire's one kind of automatic fire facility promptly, is the people same fire makes struggle's powerful tool.
The closed circuit television supervisory system present is widely applied in national economy each profession, belongs to safety and protection system's important component, the application scope is broad, the technology is mature. Along with the digitized technology's development, the close up supervisory system also presented some new products and the recent trend of development. The closed circuit television supervisory system design is by the photograph, the transmission, the control, demonstrated that four parts compose. To monitors the main engine from the camera for the point-to-point connection, take monitors the main engine as the central constitution star network. For can achieve the real-time monitoring, when the system is big is composed the bank of television monitors by the monitoring device. In order to achieve the long-term preserved scene video recording the goal, generally also installs the long time delay videocorder, and provided the large capacity image storage device (digital hard disk video recording supervisory system) to prepare the inquiry use.
The background music calls the public broadcast, also said that PA (Public Address) broadcasts. The public broadcast supposes in the public place, usually broadcasts the background music, and returns to the belt circulation automatically; When has the fire, then concurrently makes the accident to broadcast, direction dispersal. The broadcast sound system by four major part is usually composed: Program source equipment, signal enlargement and handling equipment, transmission line and loudspeaker system. key word control center alarm system; Fire detector; Hard disk videocorder; Matrix control main engine。
Abstract
all of the text detailed introduction construction electricity fire warning and interlock system's design process, closed circuit television supervisory system's design process and background music system's design process. And take Changchun Tax bureau as the example, has carried on the detailed explanation to the entire design process.
This project main body for underground one, ground 22, total floor space 22000 square meters; This project is a kind of high-rise construction, the fire prevention system protection object graduation for first-level, uses the control center alarm system, according to two main line type design. The fire warning and the interlock system draw support from an emerging application discipline which the modern electronic technology and the computer technology develop, is one of modern fire prevention automation project central contents. The fire warning and the interlock system are people to discover early, the notification fire, and takes the effective action, the control and suppress a fire's one kind of automatic fire facility promptly, is the people same fire makes struggle's powerful tool.
The closed circuit television supervisory system present is widely applied in national economy each profession, belongs to safety and protection system's important component, the application scope is broad, the technology is mature. Along with the digitized technology's development, the close up supervisory system also presented some new products and the recent trend of development. The closed circuit television supervisory system design is by the photograph, the transmission, the control, demonstrated that four parts compose. To monitors the main engine from the camera for the point-to-point connection, take monitors the main engine as the central constitution star network. For can achieve the real-time monitoring, when the system is big is composed the bank of television monitors by the monitoring device. In order to achieve the long-term preserved scene video recording the goal, generally also installs the long time delay videocorder, and provided the large capacity image storage device (digital hard disk video recording supervisory system) to prepare the inquiry use.
The background music calls the public broadcast, also said that PA (Public Address) broadcasts. The public broadcast supposes in the public place, usually broadcasts the background music, and returns to the belt circulation automatically; When has the fire, then concurrently makes the accident to broadcast, direction dispersal. The broadcast sound system by four major part is usually composed: Program source equipment, signal enlargement and handling equipment, transmission line and loudspeaker system. key word control center alarm system; Fire detector; Hard disk videocorder; Matrix control main engine。
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Summary
The full text introduced the fire fight in the building electricity to report to the police in detail and allied move the supervision design process of the system and the design process of background music system of the design process, television networks of system.Also take long Department of Taxation in the spring City as an example, to whole designed process to carry on to elaborate on.
This engineering corpus is an underground 1 F, the ground is previous 22, total building area 22000 square meters;This engineering is a type of key figures building, fire fight system protection the object ratings adopts control centre to report to the police system for one class, by the dual total the line type design.The fire fight report to the police and allied move system is ask for help of modern electronics technique and calculator technique development to get up of a newly arisen application academics, is a modern fire fight automation one of the core contentses of the engineering.The fire fight report to the police and allied move system is people for early discovering, notification a fire, and adopt valid measure, control and extinguish fire in time of a kind of auto fire fight facilities be the emollient tool that people and a fire do a conflict.
The television networks supervision system is been apply in each profession of national economy extensively currently, the importance which belongs to a safety to guard against system constitutes part, application wide, technique mature.Because the numeral turns a technical development, the closed circuit supervision system also appeared some new products with new development trend.The system design of the television networks supervision from shoot to be like, deliver, control, show four-part the cent constitute.Arrive a supervision host from the camera in order to order to the conjunction for order, with supervise and control host for the center constitute a star polygon network.For can attain solid hour supervise and control, constitute to°from the monitor a television wall while be system bigger.In order to attain to keep the purpose that the spot record image over a long period of time, generally still install long postpone video recorder, and provided with big capacity to record image an equipments(the numerical hard drive record image supervision system) with have search usage.
Background music calls a public broadcasting again, also call a PA(Public Address) broadcasting.The public broadcasting establishes in public place and broadcast background music at ordinary times, and automatically return to take circulation;While taking place a fire, then and do a trouble broadcasting, direct an evacuation.Broadcast stereo set system usually from four greatly part of constitute:The program source equipments, signal enlarges with the processing equipments, transmission line and the loudspeaker system.
The keyword control centre reports to the police system;A fire locator;The hard drive records elephant machine;The matrix controls a host
The full text introduced the fire fight in the building electricity to report to the police in detail and allied move the supervision design process of the system and the design process of background music system of the design process, television networks of system.Also take long Department of Taxation in the spring City as an example, to whole designed process to carry on to elaborate on.
This engineering corpus is an underground 1 F, the ground is previous 22, total building area 22000 square meters;This engineering is a type of key figures building, fire fight system protection the object ratings adopts control centre to report to the police system for one class, by the dual total the line type design.The fire fight report to the police and allied move system is ask for help of modern electronics technique and calculator technique development to get up of a newly arisen application academics, is a modern fire fight automation one of the core contentses of the engineering.The fire fight report to the police and allied move system is people for early discovering, notification a fire, and adopt valid measure, control and extinguish fire in time of a kind of auto fire fight facilities be the emollient tool that people and a fire do a conflict.
The television networks supervision system is been apply in each profession of national economy extensively currently, the importance which belongs to a safety to guard against system constitutes part, application wide, technique mature.Because the numeral turns a technical development, the closed circuit supervision system also appeared some new products with new development trend.The system design of the television networks supervision from shoot to be like, deliver, control, show four-part the cent constitute.Arrive a supervision host from the camera in order to order to the conjunction for order, with supervise and control host for the center constitute a star polygon network.For can attain solid hour supervise and control, constitute to°from the monitor a television wall while be system bigger.In order to attain to keep the purpose that the spot record image over a long period of time, generally still install long postpone video recorder, and provided with big capacity to record image an equipments(the numerical hard drive record image supervision system) with have search usage.
Background music calls a public broadcasting again, also call a PA(Public Address) broadcasting.The public broadcasting establishes in public place and broadcast background music at ordinary times, and automatically return to take circulation;While taking place a fire, then and do a trouble broadcasting, direct an evacuation.Broadcast stereo set system usually from four greatly part of constitute:The program source equipments, signal enlarges with the processing equipments, transmission line and the loudspeaker system.
The keyword control centre reports to the police system;A fire locator;The hard drive records elephant machine;The matrix controls a host
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Abstract:
The article detailedly introduces the design process of fire alarm and linkage system, of CCTV and background music system in the electrical construction. And as an example to The Inland Revenue Department of Changchun, the whole design process has been detailed introduced.
The main project, 1 floor underground and 22 floors on the ground, has the total construction area of 22000 square meters; this project, a kind of high-rise building and the first grade object under the protection of fire alarm, uses operation control center alarm system and has two bus designed. fire alarm and linkage system is a new applied subject based on modern electronics technology and computer technology, which is one of the core content of modern fire alarm automatization. It is an automatic fire facility for people to find fire earlier, alarm and take effective measures to control and exterminate the fire, it’s also a useful tool for people to fight against fire.
Cctv system has widely used in various ways of the national economy, it is an important component of the security system and is a mature technology. Cctv has the emergence of new products and new development trends because of the development of digital technology. Cctv system is formed by four parts of camera, transmission, control and display. A star net founds that the cameras connect the center of monitor host point-by-point. In order to monitoring real time, the tv wall is formed by monitors in large system. And in order to preserve long-term video, long-delayed VCR is installed and large-capacity video equipment (Digital HD video monitoring system) equipped which can prepare for query.
Background music also known an the public broadcasting, the same with PA (Public Address). Public broadcasting, located in public, usually play music and back with automatic cycle, it can broadcast accident and command to evacuate when fire accident happens. Audio broadcasting system normally formed by four major components: source program equipment, signal amplification and processing equipment, transmission line and speaker system.
KEYWORDS:
Operation control center(OCC) alarm system
Digital video recorder (DVR)
Matrix
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The article detailedly introduces the design process of fire alarm and linkage system, of CCTV and background music system in the electrical construction. And as an example to The Inland Revenue Department of Changchun, the whole design process has been detailed introduced.
The main project, 1 floor underground and 22 floors on the ground, has the total construction area of 22000 square meters; this project, a kind of high-rise building and the first grade object under the protection of fire alarm, uses operation control center alarm system and has two bus designed. fire alarm and linkage system is a new applied subject based on modern electronics technology and computer technology, which is one of the core content of modern fire alarm automatization. It is an automatic fire facility for people to find fire earlier, alarm and take effective measures to control and exterminate the fire, it’s also a useful tool for people to fight against fire.
Cctv system has widely used in various ways of the national economy, it is an important component of the security system and is a mature technology. Cctv has the emergence of new products and new development trends because of the development of digital technology. Cctv system is formed by four parts of camera, transmission, control and display. A star net founds that the cameras connect the center of monitor host point-by-point. In order to monitoring real time, the tv wall is formed by monitors in large system. And in order to preserve long-term video, long-delayed VCR is installed and large-capacity video equipment (Digital HD video monitoring system) equipped which can prepare for query.
Background music also known an the public broadcasting, the same with PA (Public Address). Public broadcasting, located in public, usually play music and back with automatic cycle, it can broadcast accident and command to evacuate when fire accident happens. Audio broadcasting system normally formed by four major components: source program equipment, signal amplification and processing equipment, transmission line and speaker system.
KEYWORDS:
Operation control center(OCC) alarm system
Digital video recorder (DVR)
Matrix
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