Fire Detection Video Monitoring System
Part I - System overview
Facility fires possess sudden and randomness and can cause heavy loss in short time,so once a fire occurs,fighting measures must be adopted at full speed.Whether the fighting is in time and the decision is appropriate will mainly depend on timely discovery and accuracy analysis.Traditional fire alarm system usually base on infrared sensor and smoke sensor,which means fire alarm signal will be sent out after signal processing,contrast and judgement through detecting smoke,temp. and light generated by fire.Ordinary smoke and heat fire detection alarm system can't rapidly collect fire smoke temperature change information, so it is difficult to meet the requirements of early detection and prediction of fire. Despite the rapid development of scientific world today, the human still has not been made great progress on subduing the fires.
Rely on its own advanced laser illumination and infrared thermal imaging night vision technology,combine with image acquisition, network transmission and display system, Foshvision develops fire prevention intelligent analysis system which can monitoring round the clock.The system is based on digital and network video monitoring.Compared with the general network video monitoring, it is a kind of higher-end intelligent application. Fire intelligent analysis system can realize unattended continuous work, automatically do the analysis and judgement to the video image informations; Discover unusual smoke and fire timely, do the fire alarm and fire behavior analysis in the fastest and best way;Assist the firefighters handle fire crisis effectively, and the maximum to reduce false positives and omission phenomenons; At the same time also can see the scene real-time image, command and dispatch fire fighting directly according to visual images.
Part II - System composition
Fire prevention intelligent analysis system is consist of front-end device and back-end video management system.The front-end device is consist of infrared thermal imager+ fire alarm module+visible light camera+high precision intelligent pan-tilt+network transmission equipment,and mainly responsible for collection,analisis and alarm test of images.Back-end video management system is consist of central server+Video storage server+GIS management server+Alarm linkage server+Streaming media transmit server+Emergency command server+Intelligent power & fault management server+client monitoring software,and mainly responsible for equipment management,user management,video surveillance record, streaming media retransmission,fire behavior confirm and analysis,fire orientation,GIS map labeling,etc.
In general,the front-end device will detect the fire behavior by cruising or fixed-point monitoring.Once fire found,equipment will immediately stop cruising to lock the fire,center and amplify the fire automatically,and meanwhile send the alarm information to back-end video management system.After receiving the alarm,video management system will trigger the audible and visual alarm to remind personnel on duty suspected fire occurs,then the personnel will verify the fire.If it is misinformation,relieve the alarm,and the front-end device will go on monitoring according to the stated rule;if it is true,command order will be issued to patrol and start the alarm record at the same time,and inform the alarm information to related persons by SMS alarm module.
Part III - Function features of front-end device
■ Continuous thermal zoom tech,clear imaging,far detecting distance, can search the fire behavior on a large scale and observe the fire condition closely.
■ Special high temperature alarm detector,high sensitivity,the min. temp. resolution up to 50mK
■ Front-end alarm the high temp. digital derectly,professional fire alarm algorithm,higher efficiency and accuracy.
■ After alarm,the fire can be centered and amplified automatically for easy fire confirmation
■ Day & night type camera with low illumination and penetrating fog,which can match detail observation
■ Excellent auto focus technology,can realize multiple focus methods and trigger modes
■ 3D locate function,choose for amplification and click for center both can be realized for the images in thermal imager and visible light,which can reduce difficulty in operation and improve usability of equipment.
■ Monitor screen area can be set up to reduce false alarm.
■ Universal shift speed pan-tilt,realize whole monitoring and high precision orientation
■ Professional shell design,beautiful,light and strong,high temp. resistant,anti-corrosion,waterproof and acid rain prevented
Part IV - Function features of software platform
Fire video management system is based on front-end monitoring equipment and video encoder,adopt C/S framework,through the network transmission link at interactive sector to send datas and informations to all kinds of server in service area.Clients in business area will manage and handle the monitoring service.Below pls see the system architecture diagram:
■ Central server
Do the unified management for other servers and front-end equipment,finish identification of user right,distribution & configuration of equipment,configuration management of other servers,equipment allocation,vedio plan,user management,equipment control command transmit,log record and management,etc.
■ Video storage server
Store the video record in front-end equipment, including plan video, & alarm video
■ Streaming media transmit server
Transmit the video and audio data in front-end equipment to the server and client which apply for video and audio code stream,effectively reduce the bandwidth requirement in front-end equipment,and segregate the front-end equipment and client effectively,make sure the security and robustness of the front-end equipment.
■ Intelligent power & fault management server
Industry features of fire prevention determines the particularity of installation location for front-end equipment, inconvenience of wire arrangement lead to the power supply rely on solar energy or wind-solar complementary.When intelligent power supply and fault management server inspect the power supply equipment regularly,working state will be displayed in real time;when equipment breaks down,it will inform the customers and give a solution.
■GIS management server
The management of the electronic map and basic operation, management and configuration of the equipment installation points, confirmation and display of fire position, fire spread trend analysis, fire-fighting resource management, map layer management, map plotting, best firefighting path, damage assessment,pan-tilt control, equipment positioning and map orientation,etc, and cooperate with the emergency command server to complete firefighting command and so on
■ Alarm linkage server
According to the stated plan,when a fire occurs in a monitored area, alarm linkage will be started, through the sound and light alarm linkage in management center, it will remind the personnel on duty to check and handle the danger .After the confirmation by watchkeeper,the alarm infirmation will be sent to the appointed phone No. via SMS or MMS,and inform the manager timely,which will be convenience for organization of firefighting.
■ Emergency command server
Combined with GIS management server, weather conditions and historical data, it can analyze and judge for fire danger area,display the fire spread direction in real time, and determine the effective save path
The system realize real-time video monitoring for monitor area and the front-end real-time scene can be showed on display terminal of monitor center.The back-end management adopt C/S framework,a computer as the monitoring center server, many client software.Associated images showed for alarm issues makes it easy for monitoring personnel to finish the whole system monitor.