Monitoring And Controlling And Data Transmission In Satellite Data Receiving System Based On Embedded Technology

It is an advanced means currently that collects data using satellite. In the satellite data collecting system, the devices of the user data receiving station have not fulfilled the user's request for more data. Besides most devices depended on imports, monitoring, controlling, data transmission and storage based on the form of PC plus cards, which had high cost, low reliability, low integration and trouble maintenance. It was urgent to develop the satellite data receiving system based on embedded technology in order to improve the capability of the user data receiving station and reduce the cost.Embedded system consists of software and hardware, which has some characteristics such as small code, high automatization and quick response, so it is especially fit for the application of real-time and multitask. Developing fast in recent years, the embedded technology now has entered the stage with the symbol of Internet. Embedded OS is more and more important in the complicated embedded application. Embedded OS VxWorks provides the uniform API and working peculiarity on most CPU, and it has been widely applied in communication, navigation, broadcasting, transportation, medical treatment, automatization and investigation etc.As a part of the satellite data receiving system, the task of this paper is in face of the device's accessing in Ethernet. It adopts the embedded technology — embedded microprocessor MPC860T and embedded OS VxWorks to realize the datatransmission based on TCP/IP protocol, and introduces HTTP into devices to make monitoring and controlling on embedded Web server.This paper mainly discusses four problems as follows:1. It introduces the background of the satellite data receiving system and demand of the task in this paper.2. It introduces the functions and characteristics of the embedded OS VxWorks and its developing tool Tornado II.3. It introduces the design of the task, includes software and hardware.4. It introduces the realization of the task, which focus on the details of BSP developing, data transmission, embedded Web server, and setting FPGA with SPI of MPC860T.Consequently, the task in this paper has improved the system integration and reliability instead of the situation of PC plus cards, which gives the easy operation and the satisfying result.