Shipping Monitoring System Based on GPS and GPRS Technology

A scheme of constructing shipping monitoring and control system has been provided: consists of monitor and control center, data communications, ship-borne terminals and user terminals; Hardware Structure of ship-borne terminal has been discussed: consists of central processing unit, GPS module, GPRS module, memory modules, I/O interfaces, keyboard and display modules etc. And the overall structure of ship-borne terminals, two types of memories and their connections with the microprocessor and LCD biasing voltage circuit etc. have been given after introducing related devices and modules; Highlights the initialization statement of GPS module and positioning information acquiring statement in the software design, and the related examples are given to illustrate it. IP is determined for network layer protocol and DUP for application layer protocol for communication after analyzing IP, TCP and DUP communication protocols.