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安防监控技术方案-发展趋势

安防监控技术方案-发展趋势

所属分类:手机监控

发布时间:2021-11-21 20:11:59

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安全防范技术系统经历了由简单到复张、由分散到组合与集成的发展变化,它从早期的单一的电子防盗报警系统,发展到与视频监控联动的报警系统,再到与视出/入口控制连的综合防范系统,直到社区管理以至现在的平安城市的集防盗防火控、视频监控、出/制、访客查询、保安巡更、停车场及加油站管理、智能交通、电子报、入融、电力、石化、军事、公安与党政部门等)的监控管理及系统综合的情票、重要单位(如控与管理的安防技术体系等。

智能化的监大家知道,一个完整的安防系统应具有如下3个基本要素。

1)入侵探测

即能及时发现防范区域内的各种异常现象。安防系统探测的对象主要是人及其行为。非法的行为称为入侵,所以安防系统的探测又称入侵探测。实现探测的设备为报警(探测)器,红外探测和微波探测是最常用的探测技术。早期探测器设计得很简单,如被动红外探测器与门控用和节水用的红外传感器没有什么差别,因此误报警率很高。其他一些报警器也是如此,所以误报警率高成了困扰早期安防系统的一大难题。

2)视频监控

安防系统要能对探测的结果做出评价(判断其真伪),能控制事件发展的过程,了解事件处置的结果,必须具备监控的手段。在早期安防系统中用声音来进行监控较多,成本也比较低廉。随着电视技术的成熟和普及,图像监控成了主要的监控手段。由于图像信息量大、实时性好,并具有主动探测的能力,逐渐成了安防系统的核心技术,在安防系统中占有很大的比重。目前只要有安防,就必有视频监控,这已成了定式。

3)周界管理和出/入口控制

周(边)界是安防系统需要明确的防范区域,即通过各种物理的、技术的手段,组成一个封闭的周界,并通过与周界结合的出/入口,对人、物的出/入进行管理和控制。安防系统应保证合法出入防范区域的人和物的出入通畅,有效发现和阻止非法的出/入。显然,门禁是出/入控制的常用设备。高强度的门配备高安全的(防盗)锁是最古老的门禁设备,电子控制、采用特征识别技术的系统是现代门禁的典型方式。但两者的构成要素是相同的。

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The security technology system has experienced the development and changes from simple to complex, from decentralized to combination and integration. It has developed from the early single electronic anti-theft alarm system to the alarm system linked with video monitoring, and then to the comprehensive prevention system connected with visual access / entrance control, until community management and the integrated anti-theft and fire control, video monitoring, access / control Visitor inquiry, security patrol, parking lot and gas station management, intelligent transportation, electronic newspaper, financial services, electric power, petrochemical, military, public security and party and government departments, etc.) and system integrated information tickets, important units (such as security technology system for control and management, etc.).
As we all know, a complete security system should have the following three basic elements.
1) Intrusion detection
That is, various abnormal phenomena in the prevention area can be found in time. The objects detected by the security system are mainly people and their behavior. Illegal behavior is called intrusion, so the detection of security system is also called intrusion detection. The equipment to realize detection is alarm (detector). Infrared detection and microwave detection are the most commonly used detection technologies. The design of early detectors was very simple. For example, there was no difference between passive infrared detectors and infrared sensors for gating and water saving, so the false alarm rate was very high. Other alarms are the same, so the high false alarm rate has become a major problem perplexing the early security system.
2) Video surveillance
The security system must be able to evaluate the detection results (judge their authenticity), control the development process of events and understand the results of event disposal. It must have monitoring means. In the early security system, it is more to monitor with sound, and the cost is relatively low. With the maturity and popularization of television technology, image monitoring has become the main monitoring means. Due to the large amount of image information, good real-time performance and the ability of active detection, it has gradually become the core technology of the security system and occupies a large proportion in the security system. At present, as long as there is security, there must be video surveillance, which has become a fixed pattern.
3) Perimeter management and access control
Perimeter (edge) is a clear prevention area for the security system, that is, a closed perimeter is formed through various physical and technical means, and the access / entry of people and things is managed and controlled through the access / entry combined with the perimeter. The security system shall ensure the smooth access of people and objects legally entering and leaving the prevention area, and effectively detect and prevent illegal entry / exit. Obviously, access control is a common equipment for access control. High strength doors equipped with high security (anti-theft) locks are the oldest access control equipment. Electronic control and system using feature recognition technology are typical ways of modern access control. However, the constituent elements of the two are the same.

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