Abstract
In the recent years,increasing of modern buildings leads to frequency of fire.In case fire happened,it will make huge damage to human’s life and property.Whlie modern buildings take on smart character,The fire alarm system is in charge of detecting and alarming fire in time,safeguarding beings and belongings.FAS has been a necessary setting in industrial and civilian buildings,hotels,libraries,scientific researches and business departments.
It is an important consist Part of the FAS.This paper makes in-depth research in the theory of FAC and expatiates the hardware and software method and proeess in developing a applied FAC.This thesis ineludes four main parts.This first part narrates the process of developing FAC hardware in detail.Introdueing the modular design methodology.The second part is the hardware construction of the FAS and it’s principle.Introdueing the applieation of C8051,the sensor and it’s signal proeess circuit:the sound and light alarm eircuit，the stcpping motor driver circuit,the network interface cireuit and power circuit:The third part is the software of the FAS.The system software includes the embed Program running on the MCU and the program of series port in communieation.The former is accomplished by Keil C51.It is composed of main program,motor driving program,series Program,fire judglnent program and lots of program.The latter comes out the serics communication between MCU and PC by VisualC++6.0.Accordingly implement three funetions:observing running state,changing running state by changing parameters and manual simulate motor inspect;The forth part is summarize and expectation.
KeyWords:Fire alarm system;C8051F;UV sensor;Wireless communication
