DESIGN OF INFRARED OPTICAL COMMUNICATION AND TEMPERATURE TRANSMISSION SYSTEM BASED ON OOK MODULATION
Keywords:
Infrared optical communication, OOK modulation and demodulation, UART protocolAbstract
This paper designs an infrared optical communication system based on OOK modulation to realize synchronous transmission of voice signals and digital temperature signals as well as temperature display. The system consists of a transmitter, a relay forwarding node, and a receiver. The transmitter superimposes voice signals and OOK-modulated temperature signals and sends them through an infrared emission tube; the relay node amplifies and forwards the signals; the receiver demodulates and recovers voice and temperature information. The system features low power consumption, with a receiver noise of approximately 0.02 V and a relay power consumption of about 150 mW. Experiments show that the transmission is stable, making it suitable for low-power short-distance scenarios.References
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