Design Of Intelligent Building Monitoring System Based On Wireless Sensor Network

Behind the building providing comfortable working and living environment for the broad masses of the people,the potential safety hazards can not be ignored.For example,fire protection,ventilation,air environment,air humidity and other related factors of high-rise buildings will have an impact on people's comfortable living.How to effectively monitor the building to deal with various disasters is an urgent problem to be solved.This paper designs an intelligent building monitoring system based on wireless sensor network.It can effectively monitor the environmental parameters in buildings.When the environmental variables exceed the standard,it gives an alarm in time.It is an intelligent building monitoring scheme.Firstly,the key technologies in the design of this subject are analyzed.It specifically discusses the overall architecture of wireless sensor network technology,sensor selection and technical requirements.It chooses Zigbee communication mode as the communication mode of wireless sensor through comparative analysis.Secondly,it discusses the overall design of the monitoring system.Based on the analysis of the overall functions of the intelligent building monitoring system,it analysis the structure of the intelligent building monitoring system and the design of its functional modules in detail.It focuses on the overall structure design of the acquisition terminal board and the overall structure design of the visual management platform.On the basis of the overall design,it focuses on the hardware design of the acquisition terminal board.It analyses the comparative selection of the controllers and chooses MSP430 as the main controller.It studies the circuit based on MSP430 controller and draws the circuit schematic diagram.It focuses on the design of 4G communication interface circuit,RS-485 communication interface circuit,Wi-Fi and Ethernet interface circuit and Zigbee interface circuit.It discusses the selection and performance of the interface module.Finally,it designs the software of intelligent building monitoring system acquisition terminal,and tests the functions of each interface.It divides the Serial Port Main Program into different subroutines according to different functions.It analyses the flow chart of the main program,and focuses on the communication initialization process.Finally,it tests the basic circuit of the acquisition terminal board and debugs each functional unit.Through debugging,it is found that each part of the circuit works normally and meets the requirements of operation.The acquisition terminal board designed in this paper provides a hardware platform for intelligent building monitoring.It can add or subtract wireless sensor nodes arbitrarily according to the needs of the field.It chooses the most suitable communication port according to the building environment,and finally provides the most reliable building monitoring scheme at a lower cost.