The Design Of Fire Smart Alarm System On C8051F

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. While modern buildings take on smart character, The fire alarm system (FAS) 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.The fire alarm controller (FAC) is an important part of FAS, functioning to supply the fire detector, to receive, transfer and display fire alarm signals, to send the fire control devices control signals automatically. 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 process in developing a applied FAC.This thesis includes four main parts .This first part narrates the process of developing FAC hardware in detail. Introducing the modular design methodology. The second part is the hardware construction of the FAS and it's principle. Introducing the application of C8051,the sensor and it's signal process circuit; the sound and light alarm circuit, the stepping motor drive circuit, the network interface circuit 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 communication. The former is accomplished by Keil C51. It is composed of main program .motor driving program, series program, fire judgment program and lots of program. The latter comes out the series communication between MCU and PC by Visual C++6.0.Accordingly implement three functions: observing running state, changing running state by changing parameters and manual simulate motor inspect; The forth part is summarize and expectation.