Wireless electronic information board for tsunami early warning system based on FM radio

This paper discusses an early warning system of wireless electronic information board based on frequency modulation (FM) radio to display the tsunami disaster risk visually. The system will be implemented in Cilacap District located on the confluence of two major plates. The display of proposed system is designed in multicolor using dot matrix panel P10 which has 32 × 16 pixels resolution. To be implementable for electronic information board, the display requires 96 × 48 pixels in minimum specification and is controlled using microcontroller. A master station located at the data center of Local Disaster Relief Agency (Badan Penanggulangan Bencana Daerah, BPBD) will transmit the data modulated using frequency shift keying (FSK) method through FM radio transmitter. Then, some work stations at the remote areas will receive the FM radio signal to be demodulated into data and further processed by microcontroller to be displayed. From the characterization, it shows that the proposed system successfully transmits the data with baud rate of 4800 bits per second (bps) with mark and space frequencies of 16.8kHz and 15.4kHz, respectively. Furthermore, bit error rate (BER) performance of the system is 0.2% which means there are 2 error bits in 1000 bits transmitted.