Multi-function Hydrological Monitoring Terminal System Design

Our country has massive land, climate and diverse, complex geographic factors, makesour frequent flood and drought, and the loss has also increasingly serious. Water conservancywork has a direct relationship with the flood and drought, and water conservancy hydrologicalwork is the foundation, with the development of economy, the social demand for water hasbecome more and more urgent, hydrological information measurement reliability andreal-time, directly affect the reservoir flood control safety, agricultural irrigation and thedevelopment of national economy.Hydrological monitoring terminal system is to solve the automatic hydrologicalinformation acquisition, processing, display and communication and construction project,mainly responsible for collecting sensor hydrological data, after processing and storage afterupload to central station, plays a role to upload the hub, this article through to in our countrywide application of hydrological monitoring terminal system, this paper analyses the currentsituation of the appearance of product is put in a poor stability, general is not strong and so on,and in the light of these problems, design a new type of hydrological monitoring terminalsystem.This article from hydrological monitoring terminal system actual function requirement,according to the hydrological equipment design principles and to achieve the specific function,this paper puts forward the overall scheme of the system, detailed introduces themulti-function hydrological monitoring terminal system hardware design, the design withCortex-M3kernel32-bit ARM microcontroller STM32F103ZET6as the core, expandmultiple serial interface for data acquisition and communication. System adopts the modulardesign method, and the specific modules including data acquisition module, memory module,display module, communication module, temperature measurement module, powermanagement module, clock management module. The data acquisition module includesanalog and digital content, the switch quantity, RS-232, the RS-485interface design andAD conversion circuit design; Storage module including ferroelectric memory, Flash memoryand outside enlarge storage part; Communication module including wireless communicationmodule and Ethernet communication module design. On the basis of the hardware circuit, thispaper writing the software main program and each module subroutine, Ethernetcommunication module in the network controller based on the ENC28J60grafts for embedded system of lightweight uIP communication protocol to meet the needs of the systemaccess Internet.This design is the main characteristic of the terminal system Ethernet communicationpart and system multi-function two aspects. In the analysis and research of TCP/IP protocolbasis, realize the lightweight uIP agreement transplantation, make terminal system canthrough the Ethernet access Internet, realize hydrological data remote transmission andterminal system of remote control; In order to improve the system of general, this paperdesigns a variety of data acquisition interface mode and communication mode, make thesystem suitable for different working situations.This paper first introduces the structure arrangement on hydrological monitoringterminal system design background and significance, research status at home and abroad,according to the actual function of the system demand for overall scheme design. Thendetailed introduces the system of hardware design, software design after part mainlyintroduces the overall system flow chart and submodule flow chart. Finally, the systemdebugging and analysis, and this project was summarized and prospect.