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Hebei, China

Ma S.-G.,Armed Police Academy
Procedia Engineering

This paper points out the defect of wired automatic fire alarm system in used, and the necessity and possibility of constructing wireless fire alarm system. ZigBee technology based on IEEE802.15.4 and its characteristics are introduced. We also give out a method of constructing wireless fire alarm system based on ZigBee, including the design of construction, hardware and software. © 2011 Published by Elsevier Ltd. Source

Bao Y.,Armed Police Academy | Bao Y.,Xian University of Architecture and Technology
Applied Mechanics and Materials

There is large fires risk and difficult evacuation in underground buildings, so it is necessary to study the development of fire and evacuation procedure in underground building. In this paper, a large underground banquet hall was chosen as an example, evacuation safety in the hall was analyzed by numerical simulation. First of all, fire model and two fire scenes were set up by using the software Fire Dynamics Simulator. Then the process of fire spread was reappeared by numerical simulation, and evacuation process was simulated by using the software PathFinderTM. By comparison with both result, it was proved that there is safe personnel evacuation in the case of effective fire-fighting facilities. According to the simulation results, reasonable recommendations about fire safety of the large banquet hall was proposed. The research will contribute to fire prevention and architecture design. © (2011) Trans Tech Publications, Switzerland. Source

Zhu H.,Armed Police Academy
Proceedings - 2013 2nd International Symposium on Instrumentation and Measurement, Sensor Network and Automation, IMSNA 2013

Except the public mobile communication system, t he trunking communication systems have become a special essential communications system. Because the distinguishing feature of one-button intercom, emergency call and multi-group scheduling and dispatching emergency functions, the trunking communication system can be used widely in the fire commanding communication. This paper introduces briefly the definition, classification and composition of trunking communication and put forward the frequency, work modes, networking modes of the fire trunking communication system. Besides, the advantages of the trunking communication system using in fire, such as the powerful dispatch function, flexible networking, large coverage, the number of multi-channel investment and low maintenance costs, etc are analyzed. © 2013 IEEE. Source

Li Z.,Armed Police Academy
Proceedings - 2013 2nd International Symposium on Instrumentation and Measurement, Sensor Network and Automation, IMSNA 2013

Visible Management System is designed based on system controller, running fire, patrol checking and visible management software. Wireless and network link between LED end device and control unit are setup, making dangerous chemistry location produce management visible, enable employee discover security problem and unexceptional phenomenon earlier. As a result, management is dynamic, effective, and scientific. © 2013 IEEE. Source

In this paper, fluoroalkylsilane (F 3C-(CF 2) 5-(CH 2) 2-Si(OC 2H 5) 3, F-8261)was successfully used as surface modifier to prepare oleophobic hollow microspheres. Three-phase foam was directly fabricated by oleophobic hollow microspheres. The result shows that outstanding improvement in the stability and anti-burning properties of three-phase foam on oil were achieved through the oleophobic modification. The optimum reaction conditions were 12% of fire fighting protein, the addition of 50% of hollow microsphere and0.5% F-8261. © (2012) Trans Tech Publications, Switzerland. Source

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