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The Design of Leakage Fire Alarming and Monitoring System

Author: HanHuiJuan
Tutor: DongGuanJun
School: Taiyuan University of Technology
Course: Control Theory and Control Engineering
Keywords: Electrical fire Leakage μC/OS- Ⅱ RS-485 bus ModBus protocol
CLC: TP277
Type: Master's thesis
Year: 2011
Downloads: 114
Quote: 0
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Abstract


With the growing number of modern buildings , fire danger is increasing. In recent years, an electrical fire in the fire of the increasing proportion of the serious threat to people's lives and property safety. Leakage fire alarm monitoring system in modern intelligent building plays an extremely important role in security , it is able to timely detection of electrical fire hazards, and should therefore be promoted as an integral part of modern architecture devices. This paper designs a system based μC/OS- Ⅱ leakage fire alarm monitoring system for electrical fire caused two of the most common factors, namely, electrical wiring and heat leakage , high detection sensitivity of the detector and alarm information uploaded to monitor, centralized management, real-time display , ready to monitor the electrical circuit anomalies and failures and to detect fire hazards. Firstly, in -depth investigation into the background and access to a large number of domestic and international issues of fire alarm technology based on the data , we propose a feasible system solutions . The leakage fire alarm monitoring system as a hierarchical distributed intelligent centralized control system design, an area in the upper structure fire monitors played centralized management, display real-time information and alarm function , the lower area of the fire detectors treatment kinds of sensors to detect the parameter values ??, and uploaded to the monitoring screen displays . Area between the detector and fire monitor via RS-485 bus. Secondly, this paper on the basis of the overall planning , detailed design of the regional fire monitoring and detector hardware circuits, software development platforms and communication networks between them . Among them, the modular hardware and software design methods , hierarchical structured and ensure the system's portability and maintainability. Monitor the core module uses a high-speed 32-bit microcontroller LPC2132, and the use of embedded systems μC/OS- Ⅱ as a monitor software development platform to ensure that the system in real time. In addition, the analysis based on the ModBus protocol , designed a system bus for the RS-485 communication protocol. Finally, the entire system timeliness and reliability of test results indicate that the system designed to meet the state requirements. Text by summarizing the work done on the next research work presents prospects .

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CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation systems > Monitoring, alarm,fault diagnosis system
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