Design Of Intelligent Hydrological Monitoring System Based On Android Terminal

The monitoring of water resources is the main means of understanding and revealing hydrological phenomena,and the data of hydrological flow measurement is the fundamental basis of hydraulic regulation.Unattended streaming is a hot topic at present.With the continuous development of high and new technologies such as wireless communication technology,single-chip technology,cloud computing technology,database technology and microelectronic technology,more and more technological methods are available for water conservancy,making water conservancy testing technology more intelligent,Networked.This topic studies the current hydrological test platform at the current stage of the middle reaches of the Yellow River-Fugu hydrological station.The test platform is divided into the following layers,followed by the sensor data layer,wired communication layer,Internet of Things transmission layer,and local service layer.,Android terminal monitoring layer.The sensor data layer is mainly used for the automatic measurement of hydrological key data such as flow rate,water depth and the collection of operating parameters.At this level,the article focuses on the description of the mechanical structure of the sensor,the development of the signal acquisition instrument,the filtering,and the layout of the signal line;The wired data layer mainly implements Modbus communication between two PLCs(the PLC responsible for the starting point movement control and the PLC of the cable car)and their respective NB-IOT development onboard STM32 L series chips.The RS485 communication port realizes hardware communication through the 485-TTL conversion module,and the communication protocol adopts Modbus RTU mode;the Alibaba Cloud platform is mainly built on the transmission layer of the Internet of Things,including the creation of corresponding virtual equipment,rule engine,development of embedded equipment Internet of Things access to Android terminals;at the local service layer,by creating a database on the local server and publishing Web services to the outside world,the Android terminal is provided with an API to operate the local database;the Android terminal monitoring layer is a mobile terminal developed based on the Android platform Software that uses the SD provided by the Alibaba Cloud Io T platform K realizes the Internet of things access,realizes the remote communication with the flow measurement platform,and realizes the indirect communication with the local server by developing the Web client function on the Android platform.As a general water information collection platform,the platform can realize the hydrological operation of hydrological staff in any place.