Design Of Disastrous Weather Waring System Based On FM-RDS

Severe weather can cause great harm of people’s lives and property. China released severe weather warning information mainly through TV, Internet, mobile phone text message, et al."General Office of the state council’s opinion of strengthening the monitoring of meteorological disaster and the publishing of early warning information" pointed out that severe weather warning information must issued more than15to30minutes early and covered over90%of our country in the end of twelve-five planning, so that people will have enough time for disaster prevention and hedging. However, the current methods have the shortcomings of inadequate coverage, hysteretic of the sending capability and high cost.After the study of FM-RDS subcarrier, this paper proposed a design scheme of disastrous weather warning system based on RDS. Severe weather warning information issued by the technology of RDS, and added up to the dominant frequency to launch. The terminal received the mixed signal, and displayed it on the LCD. This design has the features of enhancing the efficiency of the information release, expanding the warning range and reducing the costs of early warning. This paper is divided into6parts:the MCU module, transmitter module, receiving module, serial communication module, stereo audio amplifier module and LCD module.The main contents of this paper include:1. The status of the development and application of the RDS at home and abroad. Proposed a design scheme of Disastrous Weather Warning System.2. The MCU of the system is MSP430F149chip, which has the ultra-low power consumption. Si47xx chip is adopted to realize the stereo radio and RDS text warning information syncing. Protel99SE is used to design the schematic circuit diagram and the PCB board. The C language is used to compile program of the modules.3. The software which can programmed online via the JTAG in-circuit emulator in IAR Embedded Workbench IDE.