【 Weak current College 】 dual-band fire and linear beam images smoke detector---Power By 【 China power house network 】

As China's economic construction, some in the national economy and social life plays an important role in the construction of large space (e.g. large factories, warehouses, sports centres, a Museum, a large exhibition hall, conference rooms, large shopping malls, theaters, Terminal, etc. larger space) more and more, this kind of architecture compared to other building with universal features a span, internal lift high, according to the automatic fire alarm system design code (GB50116-98) requirements for protected space height between 12-20m due between fire smoke when it is difficult to reach the top of the room and thus generally unsuitable installation point-smoke detector for fire monitoring and alerting, and the image of fire detection because of his own works and the characteristics of the decision, in fire, smoke and flame, it is easy to be detected and thus protect this type of architecture, both for those protected space is more than the air flow above and 100m flows fast, relatively poor large space building, especially suitable for this type of fire detection and prevention. 1.1 works the system uses a high resolution CCD sensor as front-end detector belongs to the non-contact detection methods. In significantly increases the detection range and detection sensitivity, effectively eliminating environmental interference, and has good sealing and anti-corrosion properties. In fire detection area by the fire in parallel processor warning information, information processing host fire confirmation increase fire detection and alarm of reliable performance and speed of response. 　　The system consists of a front-end detection, control centre and the fire protection section is composed of three parts. 　　1.1 front-end detection part of front-end detection section can be dual-band fire detector and linear beam images smoke detector, two image-fire detectors, fire detection by them, and the collection of site information to the system's control center, dual-band fire detectors, with dual-band fire detection technology, on the probing test belongs to the sense of flame-fire detectors, a scene of the fire at the same time get information and features of the image information, fire detection and video surveillance organic combination with dust-proof, moisture-proof, corrosion protection, explosion-proof and other special places, and other functions, can be widely applied in easy to produce the open fire and smoldering fires for all kinds of places, such as furniture city, exhibition halls, stadiums, and large warehouses, workshops, materials library, tank, etc., can also be used with the environments of industrial sites. 　　Linear beam images smoke detector (also called optical cross fire detectors), the use of optical cutting image smoke detection technology, detection means belonging to linear beam smoke detector that can be implemented in the protected space of any surface need not be covered, collimated light path, have a sink, corresponding to more than one transmitter characteristics, to differentiate the emission source and interference with protected area light source, the response time of short features, with dust-proof, moisture-proof, anti-corrosion function, can be widely used in the event of a fire when smoke in places such as the tobacco industry's tobacco warehouse, warehouse, textile enterprise of flax warehouse, warehouse, etc. can also be used for poor conditions. 　　In the specific design, dual-band fire detector and linear beam images, smoke detector can be used alone, or you can mix, according to the actual situation of protection place appropriate choices to achieve protection space full protection, reasonable layout purposes. 　　1.2 control center section of the control center section of the General settings in fire control room, including information on handling equipment, video equipment (image toggle, display, recording equipment) and fire alarm equipment, the main implementation monitoring site information analysis, fire information extraction, fire alarm function when using dual-band fire detector system, you can also achieve the image monitoring function. 　　1.3 fire alarm system, controller actions, sound and light alarm, automatic real-time video recording, the phone automatically dials alarm, fire upon confirmation, the system starts automatically fire monitor automatic scanning and point to the ignition point, the system can automatically start the fire pumps and electric valve, fire sprinkler, man-machine system, together with remote (auto/manual) to control the fire monitor fixed fire-fighting capabilities, the system can be compatible with other manufacturers, according to the need to start the fire fighting equipment, fire radio, exhaust fan, fire shutter, gas fire extinguishing systems. 2.1 engineering application introduction
Dual-band fire detection and linear beam images smoke detector and fire alarm controller supporting components, image-fire detection and alarm system applicable to the initial stage there are smoke fire occurred in the warehouse, Museum, galleries, furniture city, hotel lobby, underground self-sealing, large, highly-, long-distance protection establishments of fire detection and prevention, its installation on the fundamental principle: (1) according to the actual detection range, select the appropriate type of detector (30m-100m). 　　(2) based detectors protect angle, determine the layout of the detector and the installation height. 　　(3) detector just below the blind spot detection is easy to form, be aware of the detector installation angle, or use other probes eliminate detector wall installation as close as possible to the height of the roof. 　　Dual-band Probes General wall installation, choose special bracket or suspended ceiling installation set of dual-band access to two video detector coaxial cable (SYV-75-5 or SYV-75-7) one power cord (RVV2× 1.5). 　　Note: image detector should approach lanes isolating transformer unified power supply, power supply end-to-probe can close, but should set the power switch, fuse and voltage, isolation and other protective measures. 　　System grounding is an important measure of suppression of interference, when system-generated unknown faults and false positives of fire, first consider whether a good grounding system, system grounding a antijamming, grounding resistance of earthing should be less than 4 euro. 　　Detector installation location should try to avoid strong infrared region. 　　The circuit wires in your system insulation resistance should not be less than 20 megabytes of Europe. Dual-band smoke detector, smoke detector, linear beam research and development for our fire detection and alarm field, large space architectureFire detection and prevention, the protection of such a construction is not affected by fire, protection of the State and people's lives and property has played a positive role.

Author: Hu Jian and GE Aimin