Design And Implementation Of Underground Garage Fire Safety System

In the world,the first of vehicle ownership is China.However,in urban development,the problem of parking has become a major problem.To solve this problem,underground garage is created.Large number of vehicles parked in underground garage,the people who enter and exit are complicated and many potential safety hazards.A huge losses will be paid,once a fire or other safety accidents are initiated.So the safety of underground garage should be paid a seriously attention.According to these situations,a stable operation and low cost fire safety system is designed in this dissertation.The main contents are as follows:Firstly,the overall design idea of the system is described in detail.The state of underground garage is monitored in real time by sensors,and the data is sent to the coordinator through ZigBee wireless communication.The coordinator sends data to upper computer through serial port and fire or wading status are judged by the data.When the conclusion is yes,the coordinator starts the action module and the fire fighting equipment.At the same time,the coordinate will control the GSM module,and notify related personnel in the form of short message.After that,ZigBee technology and GSM communication technology are introduced in detail.Secondly,according to the design idea,the hardware architecture of the system is built.CC2530 chip is selected as the processor,and the power supply circuit,reset circuit,serial circuit and the hardware circuit of the sensor part connected with the ZigBee terminal.The coordinator are completed,and the circuit schematic is drawn.The selection of SIM800 A chip is completed in GSM module,the corresponding SIM card circuit is designed,and the circuit schematic diagram is drawn.Lastly,two kinds of development environments employed in software design are explained,the system workflow chart is designed and software is compiled.It includes the workflow diagram of terminal,sensor and coordinator modules.The corresponding part of the program and the upper computer software is composed.Finally,the system is tested,and various fire accidents are simulated through experiments,and the working condition of the system is tested.Tests suggested that the system movement is stable,each component can responed correctly in the event of an accident and meets the design requirements.Figure [79] table [8] reference [65].