Wireless Fire Alarm System

With the rapid development of science and technology, fire hazards greatly increase themarket for fire alarm system requirements are also increasing. Traditional wired alarm systemfalse alarms, wiring complexity, maintenance difficulties, and poor flexibility, security andstability of poor. For the problem of false positives, the system uses a composite fire signaldetector fire signal detection to reduce false positives. Defects wired alarm system with goodflexibility, security, good wireless communications to transmit alarm signals. Currently usedin wireless communication network a lot, this paper proposes a wireless alarm system withGSM network build program.Wireless fire alarm system is mainly composed of three parts of the compositemulti-sensor module, microcontroller master module and alarm fire extinguishing module.This system is mainly divided into two major hardware and software design. Hardwareside, the composite sensors to detect fire signal the microcontroller STC89C52RC chip as amaster module, the external anti-jamming strong NRF24L01of wireless transmitter andreceiver module transmission signal of fire alarm used to GSM as the communication part,while the use of a DC motor control fire-fighting part. To the MAX232dual-machinecommunications, and design the peripheral circuits.The software design is built on the basis of hardware design, the system using Clanguage to complete each module design. Make sure the write mode of the main program,then subprogram modular design, the final transfer system. Serial communication of the datatransfer between the module and the module.Finally, wireless automatic alarm system, integrated debugging and summary, to test thecompatibility between the various modules of the situation, and eventually study to achieve astable performance and the timely and accurate alarm system of the market prospects.The fire alarm system can effectively prevent and reduce fire hazards to solve the wiredfire alarm system can not be resolved and to protect the personal safety and property securityof practical significance, but also has a certain market value.The system is easy to install, good reliability, easy maintenance, practicality, use of awide range.