Research On The Water Depth Monitoring System For Sponge City

In recent years,rainstorm and urban waterlogging have occurred frequently in China,water pollution and the loss of water biological habitats are serious.The traditional urban construction is insufficient,and there is a waste of resources such as rainwater loss.This not only seriously damaged our ecological environment,but also caused great damage to people's comfortable life and property safety.Some experts believe that the traditional mode of urban construction and development has been unable to provide enough protection for ecological protection and social development.Based on this situation,our country put forward the concept of sponge city.It's a new urban construction mode to solve the problem of urban stormwater management.The thesis research on the water depth monitoring system for sponge city.The system can monitor and predict the situation of rainwater logging,so that it can effectively alleviate the problems caused by rainwater collection and emission.The thesis first expounds the research background,related concepts,related key technologies,ideas and principles of the research on water depth monitoring system for sponge City,analyzes the relationship between the construction of sponge city and the IOT(Internet Of Things),and summarizes the supporting role of sensor technology in the construction of the sponge city in IOT.Secondly,the thesis made an overall design of the water depth monitoring system for the Sponge city and expounded the structural design of the IOT network system,the service system as well as the key technologies used in the process.The wireless sensor network composed of Zigbee technology combined with sensor technology was studied to solve the communication problems of the system network.The rainwater storage information in the sponge city was monitored,transmitted and processed in real time.If there is any abnormality,the emergency warning and control system can realize automatic alarm and start the emergency discharge system,reduce the occurrence of safety accidents,and promote the rapid response and processing efficiency of the sponge city to the rain and flood disaster.Finally,the water depth monitoring system of sponge city is studied with liquid level sensor technology as the starting point.However,the original measurement data achieved are usually nonlinear when the static calibration is done to the liquid level sensor.In this thesis,a static calibration system for liquid level sensor is designed,which consists of fourparts: liquid level sensor,I-V conversion and amplification circuit,STM32F107 data acquisition of lower chip microcomputer and an upper PC machine for data processing.The data transmission between STM32F107 and upper PC is transmitted by means of USB communication.In the aspect of data processing,an adaptive CID algorithm is proposed in this paper.First,the data collected from each sample point are analyzed by statistical analysis and CID operation,and then the processed data are fitted with curve,and the fitting results are compensated.The experimental results show that the system and algorithm implemented in this thesis can effectively serve the water depth monitoring system of the sponge City,and provide reliable technical support for the further systematic implementation of the technology of the sponge city.