| The design of the course indicator system based on GPRS is a modern monitoring system which integrates modern wireless communication technology, the signal gathering technology and computer network technology. In modern monitoring system, the network has become a new trend in the development of the measurement technology. In this paper we not only achieve the remote supervisory of the ship course and data sharing, but also describe a modern monitoring system. The paper discusses the design method of the dada acquisition and wireless data uploading, and shows the realization of industrial websites. With the implementation of real-time online monitoring the course, user can browse the course data in any place and control the field device proceed on practical situation.The whole system is made up of two major parts. That is, the design of the software and hardware of the client system, the software design of the server system. The part of client system focuses on the software and hardware design of data acquisition module and manipulating GPRS modem LT8030 to set up wireless line with AT orders. The software design of server system includes two parts: the communicator of server system and the ASP application. The communicator of server system which is implemented with VC++ language can offers a friendly human-machine interface for users. The communicator of server system provides a set of functions: receiving the data,sending the server command,analyzing the data and importing into the database etc. The ASP application provides the WWW service . The users can obtain the real-time course data,understand the state of processing instruction and the failure information of the client system. In the ASP application, the users is divided into different level and each level has its own access right.Based on the research mentioned above, the course indicator system based on GPRS can meet the demand of modern distributed monitoring system, and it also can offer a reference for the development and realization of the similar systems in the future. |
