UNDERWATER COMMUNICATION DEVICE USING VISIBLE LIGHT AND UNDERWATER COMMUNICATION METHOD USING THE SAME

摘要

Provided are an underwater communication device using visible light and an underwater communication method using the same. The underwater communication device using visible light, includes: an input unit converting a data signal received from the outside under water into an electrical signal; a transmitting unit converting the electrical signal into a visible light signal and emitting the visible light signal under water; a receiving unit recognizing the visible light signal under water and converting the visible light signal into the electrical signal; and an output unit converting the electrical signal into a data signal and outputting the data signal under water. Therefore, it is possible to provide an underwater communication device that may be implemented at low cost, perform wide band communication, and have excellent security.

主权项

1. An underwater communication device using visible light, comprising:
an input unit 100 receiving a data signal under water and converting the data signal into an electrical signal; a transmitting unit 200 including a signal magnitude adjusting unit 210 adjusting intensity of the electrical signal, a light emitting diode (LED) driving unit 220 driving an LED illumination or generating an illumination signal, a signal summing unit 230 summing up the electrical signal and the illumination signal to generate a complex light signal, and a visible light emitting unit 240 adjusting a wavelength of the complex light signal to emit a visible light signal to underwater, the LED driving unit 220 being operated in any one of an automatic mode of always driving the LED illumination and generating the illumination signal when it is confirmed that the signal magnitude adjusting unit 210 is driven, an illumination mode of always driving the LED illumination, a communication mode of always generating the illumination signal, and a turn off mode of not driving the LED illumination and not generating the illumination signal; a receiving unit 300 recognizing the visible light signal under water and converting the visible light signal into the electrical signal; and an output unit 400 converting the electrical signal into a data signal and outputting the data signal under water.