The Research On Key Technology Of Ocean Environment Observation Data Transmission Regular Operation

Ocean data transmission network is an important part of the ocean environmental observation system which plays the role of bridge and link that connects the three-dimensional observation system, forecasting and warning system, information integrated processing system and the users. Its regular operation is of great significance to improve the ability of the marine observation forecasting and disaster warning.Along with our government's high regard to marine observation technology and the advancement of marine science and technology, our country's marine observation will extend from coastal waters to deep sea and then various observation platforms especially marine observation platforms will be widely used. There are some outstanding issues in the marine data transmission system which can be illustrated by the following examples: the system is too complicated, hardware devices are not versatile and may generate an access visiting conflict and upgrading difficulties.To solve these problems, the work is completed as follows:First of all, the data transmission standardization program has been offered. It consists of three aspects: physical interface standardization, communication protocols standardization and data transmission format standardization. On the basis of referring to a variety of transfer protocols, the thesis establishes a comparative perfect transfer protocol.Secondly, data standardization has been realized without changing the existing hardware and software platform. The thesis proposes a practicable solution, which is, establishing a middle layer of interpretation between the observation platform and communication platform. The middle layer of interpretation is equivalent to a middle conversion module which realizes the conversion of interface and communication protocol.Thirdly, a system has been designed for implementing the function of the middle layer of interpretation, including hardware and software components. C8051F020 processor and some external interface conversion devices have been tried to use as hardware. Silicon IDE and the Microsoft Visual Basic 6.0 have been used for software development.Finally, a set of test environment has been established to validate the designed system by experiments and then the results has been analyzed.