应用超声与物联网云计算技术的用水安全研究OA北大核心CSTPCD

In the face of increasingly serious water security challenges,it is particularly important to find efficient and accurate monitoring and management tools.In allusion to the problem that abnormal water usage is not easy to be detected in time and cause losses,a water security system integrating the ultrasonic flow measurement and Internet of Things(IoT)cloud computing technology is developed.The system scheme is designed,and the U-shaped ultrasonic flow measurement method is selected by the comparative analysis.A water usage model is established,and a comparative study is carried out between normal water usage and abnormal water usage to obtain the characteristics of water flow under the conditions of pipe burst,leakage and abnormal water usage.According to the characteristics of three kinds of abnormal water usage,a set of determination algorithm based on water usage statistics is designed.The testing environment is set and the testing program is developed to test the system functions.The results show that the proposed system can accurately determine the situation of pipe burst,leakage and abnormal water usage according to the set parameters,and can close the valve in time.After adaptive development,the system can be further extended to scenarios such as factories,shopping malls and office buildings.