Design And Implementation Of The Debrisflow-oriented Online Monitoring And Warning Platform Based On IoT

In recent years, with the rapid development of wireless sensor networks (WSN) related technology, it is increasingly widespread to apply wireless sensor networks in many areas, such as ecological environmental monitoring, traffic monitoring, military observation and health care. Simultaneously, the natural disasters occur frequently yearly, causing the government and society attaches great importance to the work of monitoring and early-warning of natural disasters.Recently, wireless sensor networks are playing an increasingly important role in environmental monitoring. In the field of monitoring debris-flow and mudslides, the traditional monitoring methods mainly are video surveillance, human duty and so on. And compared to the traditional means of debris-flow monitoring, the monitoring system based on wireless sensor networks can work long-term in the harsh environment without staff on duty on site, and it also has several advantages, such as a large amount of acquisition data, high precision, and easy to deploy. So, based on understanding of the formation mechanism of debris-flow and the research status quo about wireless sensor networks, this article studies the key technologies for geological disaster monitoring based on wireless sensor networks, and introduces a solution:based on wireless sensor network debris-flow disaster monitoring system. On the basis of well-established deployed wireless sensor network, we design and initially implement the debris flow disaster monitoring and warning web system, namely monitoring center system.The deployed based on wireless sensor networks debris-flow monitoring system collects soil moisture, temperature and humidity, GPS and soil internal pressure and other environmental parameter data, using a variety of specialized sensors. The collected data are transferred using zigbee wireless communication technology, by way of multi-hop ad hoc networks, and will be collected to debris-flow monitoring center system. The monitoring center displays received environmental data and complete data processing after further-analysis. The web system function includes:real-time display data, display data in chart, querying historical data, network topology and management of the entire sensor network system, such as sending sleep command, wake-up command, and changing the sensor sampling frequency command to the sensor nodes.This paper first introduces research status and future trends of the debris-flow monitoring, then wireless sensor networks are analyzed and compared in terms of the great advantage sin debris flow disaster monitoring, following the introduction of wireless sensor network architecture, and then the architecture and working principle of system is described. Finally, the paper describes the design and complementation of the debris-flow disaster monitoring and early warning web systems based on ExtJs desktop, struts, spring and hibernate.