Research On The Monitoring System For Outdoor Advertisement Board Based On Wireless Sensor Network

Nowadays,the outdoor billboard has become a very common facility in people's daily lives,and billboards are full of people's lives around everywhere.With the rapid development of social economy,the outdoor billboard as an important means of public awareness,is also rapidly developing,more and more outdoor billboards appear in people's vision,and it has become a key component of today's city.However,with the increase of outdoor billboard facilities,the safety regulatory issues cannot be ignored.Because the installation is not strong,structure is loose and other causes,the outdoor billboard will do harm to people's life and property.Therefore,through the realization of outdoor billboard online security monitoring,the existence of security risks can be found from the structure of the outdoor billboard.In this thesis,based on the research status of security monitoring system at home and abroad,this thesis puts forward the application of wireless sensor network technology,aiming to the outdoor billboard security monitoring.The monitoring system gathers the information of the inclination state through multi-wireless sensor nodes distributed on the outdoor billboard structure,and sends the data of each node to the embedded device terminal through the Zig Bee wireless network for data processing.Moreover,the embedded device terminal can make real-time judgment and send early warning under the dangerous situation.By using the GPRS network,the data is transferred to the remote data center for further analysis.This thesis focuses on the analysis of outdoor billboard model structure,system design,wireless sensor node and network implementation,embedded data processing terminal application development,remote server data center development,and the use of online data processing algorithm,according to the characteristics of abnormal data.Then put forward the relevant early warning judgment standard.Under the condition of laboratory,the performance of each component module of wireless security monitoring system is tested in this thesis.The test results show that the accuracy of the sensor nodes is less than 0.4 degree,the stability is good,the power consumption is about 23.3m Ah and the power consumption is low.The communication distance of the wireless sensor network meets the monitoring requirements,and there is no packet loss.The function of the GPRS module is normal,the upper computer can receive data and achieve early warning function.The system also needs to further optimize and perfects the function to meet the requirements in practical application.