基于無線傳感網(wǎng)絡(luò)的戶外廣告安全監(jiān)測系統(tǒng)研究
[Abstract]:Nowadays, outdoor advertising has become a very common outdoor facilities in people's daily life. With the rapid development of social economy, outdoor advertising, as an important means of mass media propaganda, is also developing rapidly. More and more outdoor advertisements appear in the sight of people and become a key element of modern cities. However, with the increase of outdoor advertising facilities, the problem of safety supervision should not be ignored. The collapse of outdoor billboards caused by improper installation and loosening of structure will bring serious threat to the safety of people's lives and property around them. Therefore, to realize the online safety monitoring of outdoor advertisement, we can find out the hidden danger in the structure of billboard in time, overhaul ahead of time, prevent trouble in the early stage. On the basis of investigating the present situation of security monitoring system at home and abroad, this paper puts forward the application of wireless sensor network (WSN) technology to outdoor advertising safety monitoring in view of the diversity of outdoor advertising structure. The monitoring system collects the inclination state information through several wireless sensor nodes distributed on the outdoor advertising structure, and sends the data of each node to the embedded device terminal for data processing by Zig Bee wireless network. Finally, the data are transmitted from the GPRS network to the remote data center for further analysis. This paper focuses on the analysis of outdoor billboard model, the design of system scheme, the implementation of wireless sensor node and network, the application development of embedded data processing terminal, the development of remote server data center. According to the characteristics of abnormal data, the algorithm of on-line monitoring data processing is studied, and the relevant early warning criteria are put forward. Under the condition of laboratory, the performance of each component module of wireless security monitoring system is tested in this paper. The test results show that the precision error of the sensor node is not more than 0.4 degree, the stability is good, the power consumption is about 23.3m Ah. a day, the power consumption is low, and the communication distance of the wireless sensor network meets the monitoring requirements. The function of GPRS module without packet loss is normal, and the upper computer can receive and display data normally and realize warning function. The system also needs further function optimization and improvement to meet the practical application needs.
【學位授予單位】:杭州電子科技大學
【學位級別】:碩士
【學位授予年份】:2017
【分類號】:TP212.9;TN92;TP274
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