Key Technologies Of Water Level Monitoring In Urban Rainstorm Waterlogging Based On WSN

The project aims to integrate the emerging WSN technologies with traditional GIS-based urban rainstorm waterlogging warning system, so that the water level information can be collected as soon as possible, based on which the system will make warning more accurately, in which way the safety of people's lives and properties can be guaranteed to a great extent.The thesis is focused on the key technologies of water level monitoring in urban rainstorm waterlogging based on WSN. A complete scheme is designed for the collection of the water level information in the proposed system. Effective realization measures are provided for the collection of data, the constructure of the self-organizing network and the process of data. In the mean time, a comprehensive and effective test of the whole water level monitoring system is conducted in the experimental base, the results of which have proved the effectiveness and reliability of the system. The contents of the project are as follows:After relative analysis of the requirements for the water level monitoring system, a scheme which is applied to the system is designed, taking WSN technologies as the technical background;The hardware design for all kinds of devices is completed, including the water level sensor nodes, the gateway, the relay node and the base station. Detailed design schemes are proposed, and tests are conducted to identify the availability of the hardware system;The programs for each device in the system are developed based on the embeded operating system- TinyOS, a special operating system for WSN, including the driver of water level sensors, the process of water level information, the data transmittion of the gateway and the relay node, the data process of the base station as well as the control of sampling frequency of the sensor nodes in the target areas. Finally, each device is tested individually;According to the data-driven operating feature and the requirements, a self-organizing routing algorithm that can be applied to water level monitoring system is proposed, and it is achieved based on the components model of TinyOS.In the end, the algorithm is tested and the results show that it is available;The installation and test of the whole water level monitoring system are completed in the experimental base and the test results show that real-time monitoring of water level is achieved, and the system runs well.