Research For Remote Monitor System Of Marine Electrical Power Station Based On TCP/IP Protocol

Along with development and popularization of computer technology and network technology, pocket embedded equipment with single-chip computer have already applied extensively in industrial automation, official automation and building automation etc. To realize the long-distance data-collected, control and so on, the network has become a trend of the development of new generation embedded system. It has important realistic significance and economic value to research the connection of embedded system and Internet.The Internet gets a fast development and extensively applied receive benefit in adopted international in general use standard agreement TCP/IP agreement. The technical development of the Internet promoted built-in network equipments in the market need of product, make these equipments and product and Internet connect with each other to become trend, the Internet technique will go deep into daily life and work the electronics equipments used.Adopt the dsPIC30F4011 microcomputer as the controller that the marine electrical power station network corresponds by letter a mold piece in this paper, embed the TCP/IP protocol to accomplish the commutation with the various data of the Internet; Still need to complete a homologous data to collect, instruction performance etc. related function.The paper includes the introduction of characteristic of dsPIC30F4011 microcomputer, the reason of choosing network card chip RTL8019AS, giving the circuit of hardware interface and the explanation of mostly periphery parts.The design of the driver of network card is introduced in the paper. The interior structure of network card chip, the main pins, the frame format of Ethernet, the principle of receive&send data package, the operation of DMA of RTL8019AS are described in detail and the flow chart of program is also given out.TCP/IP is an ensemble of many protocols. Some functions are reduced to allow single-chip computer to go to Internet but TCP/IP protocol and package format are explained in particular. The work flow of system and the flow chart of each TCP/IP module are given out, too.