The Research And Application Of Urban Key Civil Air Defense Engineering Comprehensive Monitoring System

With the rapid development of science and technology,the demand of intelligent monitoring system is higher and higher to the civil air defense engineering.But due to the traditional civil air defence engineering in our country,the automation level of the engineering is still low.Although in recent years gradually introducing automation control system,to make the equipment,environment,technical and other conditions improved,but due to the imperfection of the standards and specifications,its automation level and technology level is not match the currently level of science and technology,and the gap between the civil building intelligent level is too large also.This paper research the urban civil air defense engineering comprehensive monitoring system,based on sufficient investigation and researching of the automation level of the civil air defence engineering status quo at home and abroad,base on the antithesis of kinds of the mainstream fieldbus at present.introduce LonWorks fieldbus to the civil air defense engineering in the comprehensive monitoring system,analysis of the composition of the system and its basic control function of each subsystem detailedly,makes the intelligent level of the mainly urban civil air defense engineering has a new breakthrough,to maximize the each function of this system.Firstly,this paper analyzes the characteristics of LonWorks fieldbus technology,designed the overall architecture of the key urban civil air defense engineering comprehensive monitoring system which based on LonWorks fieldbus as bottom bus,and discusses the design process of the system in detail,including the principles of each subsystem,the hardware composition and software design.The video monitoring subsystem based on gray level co-occurrence matrix texture analysis method to distinguish the population density of the project,extracted the characteristic value from the gray level co-occurrence matrix,useing the support vector machine as classifier to estimated crowd density,so as to realize the real-time monitoring of civil air defense engineering number of mouth.The automatic fire alarm subsystem is based on each of the mouth part of the civil air defence engineering of fire alarm control device which connect to the field acquisition sensors of real-time monitoring to achieve the function of fire automatic alarm.Design the RS-232/RS-485 interface conversion module for automatic fire alarm and air quality monitoring subsystem of equipment at the scene,solving the problem of the connection between different interfaces.System adopts RsView32 industrial control configuration software,it exchanges information with the field intelligent node by LNS DDE Server,can control the temperature,humidity,CO2 concentration and toxic gases' state of the internal civil air defence engineering.In the end,This article illustrates how to build and display system monitoring interface,analysis and test the function of the system.After the debugging and running,the system which designed in this paper is stable performance,provided a reference for population evacuation command scheduling,also helps to further promote the LonWorks technology in the application of the intelligent civil air defense system,and has a certain promoting significance to improve our country's civil air defense engineering intelligent monitoring and control management level.