Design of a New Fire Detection and Alarm System Based on Self-Organizing Wireless Sensor Networks

Abstract

The system is composed of Fire center console, wireless control board, wireless multifunctional fire detector and wireless PTZ camera control system. It is based on string-like network topology self-organizing wireless sensor networks, which adopts Simplici TI network protocol that can reduce power consumption of the system. The system uses BP algorithm program for judging whether there is a fire, uses Wireless PTZ camera control system, which is convenient to install, for real-time monitoring the detect area, uses voice module for fire automatic voice alarm to the fire department and uses Micro-Fire GIS to show the location of a fire. BP algorithm program is embedded in wireless multifunctional fire detector. The samples of BP algorithm were derived from the fire detection standard room of the State Key Laboratory of Fire Science of China. The system is low false alarm rate, low cost, fast response and convenient to install.

A Proposal for Intelligent Transportation System Solutions in Railways: Digital Railway

“…Demiryollarındaki yapılar için, zorlu çevre şartları, trafik akışı, emniyet ve güvenlik riskleri gibi karşılaştıkları birçok zorluk nedeniyle, yeni teknolojileri kullanan ve birbirine entegre olabilen sistemler önerilmektedir [41]. SCADA sistemlerinin içine entegre edilen çevresel kontrol sistemleri, demiryolu ve karayolları hattı boyunca istasyonlardaki ve teknik binalardaki kritik durumları izlemek ve kontrol etmek amacıyla geliştirilen ve algılayıcılar ile birlikte çalışan özel yazılımlardır [42]. Bu sistemlerin temel amacı, çevresel ve temel ekipmanlardan gelen verileri toplayarak ve bu verileri işleyerek yangın, izinsiz giriş ve elektrik kesintisi gibi olası tehlikelere karşı sistemi korumaktır [43].…”

Wireless Sensor Networks: Toward Smarter Railway Stations

“…To improve the system efficacy and convenience for installation, and to broaden the applicability, a new fire detection and alarm system was designed based on self-organising star wireless sensor networks. The system involves wireless multifunctional fire detectors, Pan-Tilt-Zoom (P/T/Z) camera control systems, wireless control boards, and a fire centre console (see Figure 3) [62,63]. New projects may have a range of wireless sensors, which are part of the overall project management system.…”

Wireless Warning System of Positive Pressure SCBA Based on GPRS

“…B) Temperature sensor. DS18B20 is a unibus communication protocol-based temperature chip which internally integrates functional modules like temperature-sensitive component, data conversion chip, memory chip and computer interface chip [4] . It can directly output temperature-sensitive signals, and communicate with the single-chip microcomputer in serial output mode, with a temperature range of -55℃～125℃ and accuracy of ±0.5℃.…”