关键词: GPRS G20 GPS 无线传输 应急指挥系统

Abstract:

This paper puts forward a mobile multimedia emergency command system based on GPRS/GPS/ GTV-100. The system includes the dynamic orientation through GPS,the bidirectional data transmission through GPRS and the real-time audio/video transmission through the GTV-100 microwave devices.Using wireless comm unications and control makes the system flexible and mobile. This paper introduces the constitution and the working principle of the command system. The n this paper expatiates the realization of GPRS communications using the Motorola G20 module and the design of the communications module of the command  control center. Finally the paper studies and explains how to design and implement the hardware of the mobile unit using G20, GSU-36 and GTV-100. A lot   of tests under different environments show that this system has good effect.

Key words: GPRS;G20;GPS;wireless transmitting;emergency command system