The Research And Application Of Hydrological Information Automatic Telemeter System Based On GSM Communication Method

The hydrology telemetric system is an important component of informationization in the field of Water Conservancy. In order to make accurate prediction and management, the hydrological information is collected and processed. It is very important that research on the communication method can ensure Water Conservancy System work normal. Those communication methods used have advantages and disadvantages in those aspects, such as communication quality, adaptation condition, covering scope, geography environment, construction and working cost, real time quality, etc.In order to make the transport of hydrological information better, this dissertation introduced GSM communication methods in the hydrology telemetric system, using GPRS cell-phone, by those mobile communication methods, such as GSM SMS, GPRS SMS, GPRS Data Service, Circuit Data Service, Tone Channel, etc.This dissertation summarized the constitute of hydrology telemetric system, mobile communication methods, and compared them with those traditional methods. After introduced the feasibility and the principle and method of using GPRS cell-phone is discussed, a hydrology telemetric system based on GPRS mobile phone is structured, planned, and designed, the central station and remote stations are realized, some improvement and a circuit graph of the structure of remote stations is given. Finally, the main structure and some important part of system communication program is given. This dissertation also probed the CPFSK method using MCU.