A Design Of Remote Hydrology Information Monitoring Terminal By GPRS

Hydrology information monitoring has a very important role in the use of natural resources and the prevention of natural disasters.With the development of economy,hydrology information monitoring projects continue to increase,and sensors has many types according to the monitoring object,interface and measuring range,which led to the traditional monitoring terminal can not support more quantity and multi-types sensors.Traditional transmission technology,like cable transmission,ultrashort wave and satellite communications transmission are insufficient in monitoring scope,timeliness and cost.The development of hydrology information remote automatic monitoring is being promoted by the development of remote communication technology,which tend to wide coverage,fast transmission and low cost.Hydrology information monitoring system is mainly composed of sensors,monitor terminal,communication network and monitoring center.Monitoring terminal’s main function is to read sensor data and transmitted to the monitoring center.Aiming at the shortcomings of the compatible multi-types sensors,the thesis designs the hardware which support multiple interface types,such as parallel digital interface,analog interface,RS485 interface and interface of the pulse.The thesis use GPRS as data transmission scheme,which improved the deficiency existing in the traditional scheme on monitoring scope,timeliness and cost;In order to realize data acquisition,data storage,data reporting,remote upgrade,the thesis have designed the solution which uses STM32 as controller and GPRS as remote transmission technology.Through the optimization of software and hardware,the project is to realize the characteristics of the sleep state and low power consumption,which provided more work time for monitoring terminal.