Saturday, December 18, 2010
【 Weak current College 】 on "fire" and "security" of the same and the difference between---Power By 【 China power house network 】
Fire, as the name implies contains "destroy" and "precautionary" two concepts. As a security system it completely including the prevention and mitigation of two basic elements, also reflects the "prevention of fire prevention, anti-medicine."
Prevention and mitigation is to constitute the basic elements of safety systems, and fire the two main factors, therefore, decided to fire and security have many common things.
Prevention is at the core of the fire-fighting system, the system must be able to accurately identify fire risk factors exist and fire hazards, early warning of a fire and fire alarm. And fire detection technology is the main instrument for the prevention, detection can lead to fire at the beginning of the natural environment parameters or fire resulting in physical phenomena, analysis and judgement, and alarm information.
Disasters, is through the alarm fast, effective response, timely elimination and control of fire insurance, fill out the initial name control the spread of fire, make it to security. Use the appropriate technical system is effective for reducing fire losses, usually by means of the fire service, fire-fighting equipment, they are made by people to action, many modern buildings is the use of automatic control systems, such as water spray systems, chemical (gas) fire control system, etc. These are the unique fire fighting system.
In the construction of infrastructure facilities, the need for fire protection (depending on the risk factors in the decision) to take the necessary design, such as fire safety, fire doors, isolation, and life-saving devices are effective mitigation measures. In architectural design in progress you can strengthen the capacity building of the fire, this is an effective preventive measure. Usually such measures we call "system reinforcement."
Fire protection system is a security system in the technical areas is very similar to the security system. Especially in the means of prevention, security alarm systems and fire alarm system in the network structure, communication, information processing and control modes are basically the same, so many technicians claim both into one or two system integrated with the most rational distribution of resources. Of course they also have the obvious differences, mainly in the system of disaster reduction measures, for example, fire-fighting systems controlled by a mechanical linkage is above that of water sprinkler systems, fire extinguishing system, its design and architectural foundation, pipe, etc., combined with relatively more closely.
Security systems and fire detection system in technology development and the same can be said to be: step-by-side. Some security system intelligent concept is from fire-fighting system. If the security alarm system evaluation of the authenticity of the expert system that originates from the fire of analog systems. They are not isolated loud respectively, reflecting a variety of physical quantities and status changes (respectively, isolated individual detector alarm response), but is comprehensively, from the relationship between them and the changes in the characteristics of the process to analysis and judgment, and thus concluded that the real detection results. This requires that systems and equipment in a humanized design, with mimic human way of thinking and judging function of analysis. If the amount of simulated fire detection and alarm system is based on the initial stage of space dust of fire spread, environment temperature variation, to analyze a space within the detector probe data in time and rate, order, spatial distribution, and other aspects of the relationship to determine whether it meets a real fire, to make the alarm. This is the concept of intelligent systems.
Is security and fire has many of the same point, because they are physically through measurement of environmental parameters to achieve detection, fire detection primarily measuring temperature, temperature change rate, dust concentration, UV radiation, and intrusion detection is measuring electromagnetic field changes, the infrared radiation strikes, etc. And a variety of probes for detecting output mode are the same, mainly the switch quantity. In both systems some detectors is to common, such as active infrared, it can be used as fire detectors, smoke detection, are also available through light path interrupted for intrusion detection, intrusion detectors. As for the transmission of the signal, detection, and system monitoring (monitoring) and information display, two system is even more different. Control device works, circuit structure, the functions can be said to be fundamental, is due to common. But the structure of the system, fire industry technical standards on regional (floor) controller (set in the connection on each floor of fire detector), centralized controller (set in the fire control centre to connect regional controller) have specific requirements on their configuration, installation and basic functionality are normative requirements. Security systems are not so strict, it lets designers depending on the situation, flexible choice.
Security systems and fire-fighting system there is a difference between the essentials: guarding against objects, security system against the person, the person's subjective intention. The fire protection system against object is "fire" the natural (objective) phenomenon, it is a system failure and non-subjective intent. Thus many of the issues of fire-fighting system is the classic security theory covered by many factors, it is relative, so the system building appropriate technical standards and specifications for more complete, more operability. Next there is a need to strengthen the high-rise building construction and fire protection of underground facilities system design and equipment, facilities. Security system is not, constitute a fundamental element of many of its very high uncertainty, in theory, or blank, considerable technical standards do not improve, a lot of problems to pass practice to sum up and improved. Such as system at design time, the security system to consider an intruder on system damage, this is a security system, the main purpose of reinforcement. Fire-fighting system you do not pay attention to this issue.
Management, is also not allowed to combine the two systems integration or integrate with, this is a requirement that is not randomly change. But technically you can learn from each other, to achieve a degree of integration and resources sharing. If the security of the access control system must be in the event of a fire when the door is placed on, fire and security can share architectural environment monitoringControl of image resources, etc. In some of the newly-developed applications, both of which have been integrated, such as residential security systems, including security, fire protection, health and so various functions, home alarm controller can connect intrusion detectors, fire detectors, gas detectors, sensors, is already a fire protection, security and integration of the system.
Above security, fire the same and different, and the hop is to illustrate the characteristics of the two systems, the independent, integrated, and no technical obstacles, notably ensuring the effective functioning of the system and the prevention, to achieve mitigation features.
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