Design Of Weather Message Receiving And LED Display System

A weather message receiving and LED display system is designed to install public weather broadcasting terminals in downtown and suburb areas; the weather bureau distributes weather forecasting information such as weather status, reminder, and instructions to terminals instantly; the terminals display the information in text format by using LED screens in downtown areas, or broadcast the information via voice by using high-power speakers.We present the design of a weather message receiving and LED display system. Main functions of the system include:receiving weather messages from public mobile communication systems or from USB port through the GPRS/GSM module; displaying weather messages on the LED screen; audio broadcasting of weather messages using text-to-speech (TTS) and audio power amplifier.The system is composed of 5 major hardware modules:CPU module, GPRS/GSM module, LED display module, USB port module, and audio power amplifying module. LED display data interfaces and line scan modes include:08 interface with 1/16 line scan 64*32 unit board; 12 interface with 1/4 line scan 32*16 unit board. We design the LED screen composition based on the two line scan modes, data flow, data interface group of control board, and interface extension.Programming design for the system consists of 6 main modules:boot and initial process, GPRS/GSM receiver, USB receiver, LED display data collection, LED display, and voice broadcasting.The results show that our proposed system had good performance and achieved the expected goals...