Research On Wireless Early-warning System Of Electrical Fire Based On Information Fusion

This paper developed the research on Early-Warning system of Electrical Fire,mainly about the causes analysis of Electrical Fire, design and testing of signaldetection circuits, signal datas fusion, datas transmission by Zigbee, and the design andexperiment for working interface in supervisory computer.First, this article introduced and analysed the causes that resulted in Electrical Fireeasily, and looked for the similar electrical and physical phenomenon for ensuringsignal objects needs detecting; Meanwhile, referred to the development of ElectricalFire monitor devices, proposed the design project of whole Early-Warning system.Second, in terms of the signal detection objects, related signal detection circuitswere designed and tested, and they had better working performance.Then, D-S Evidence Theory was used to fuse and analyse the detection signal, andthe BPA assignment method on propositions were improved, so simulation results hadgotten better, the dependability of early warning increased more and degree of uncertaindescended much; Besides, proposed the software processing and hardware project aboutMCU, including MCU hardware interface, main software project, D-S fusion algorithmand its achievement by C program.Finally, configured working parameters in Zigbee wireless module, by whichstructured communication network to transfer data with supervisory computer; therapidity and flexibility of datas transmission, showed Zigbee communication had bettereffect and feasibility.In this article, many experiments or simulation about designed content has beendone, also the results verified designed Early-Warning system was feasible and reliable;and due to the using of information fusion technology, warning accuracy of system hadgot much more improvement. However, under the limitation from experiment conditionand requirement, a few sections of Early-Warning system still need some furtherresearch and improvement.