Study Of Auto Matic Fire Alarm System Desin And Implementation

The fire has become China’s frequent and destructive as well as the most influential one of the disaster. With the rapid development of economy and city construction, fire hazards are greatly increased, the number of fires and the loss was caused by a rising trend year by year. Fire alarm device building has become necessary. Fire alarm system plays a vital role in security of modern architecture.The system for fire protection design of Cangzhou Vocational College of Technology student apartment fire alarm system, the system with the day-to-day management of student apartments, from three aspects of hardware and software design, system design, system.First of all, the system working principle and circuit diagram are described. Through the comparison of the existing fire alarm system in Colleges and universities is not suitable for the apartment; highlight the advantages of the system. Then according to the structure of the system, draw the circuit diagram of the system and the simulation diagram.Secondly, the design process about the small fire alarm system, the main device on the performance and usage as well as modules designs. Device performance and usage mainly Pt100and ADC0808, because they are the alarm system data sources.Finally, according to the five modules of automatic fire alarm system, division of the introduction, mainly on the AT89C51microcontroller as the core as the control center of peripheral devices; peripheral device mainly comprises a photosensitive sensor, temperature sensor and gas sensor, digital tube display, audible and visual alarm and serial communication devices etc..This design system is adopted with the host computer through serial connection (computer), realization of computer monitoring. The system can happen real-time monitoring each student dormitory fire. The advanced computer control technology and digital data acquisition, control alarm with multi-function. The data acquisition and processing of multi-channel makes the stability and reliability is greatly increased, the false alarm probability; has the advantages of small volume, strong interaction, easy operation, timely alarm, etc.. Experiments show that, the system is very suitable for monitoring area, and the funds more tense unit.