Visible light communication demonstration teaching aid

Abstract

The invention discloses a visible light communication demonstration teaching aid, a transmitter, a receiver and a sound box are fixed to the front of a case, external Bluetooth equipment or a 3.5mm audio input interface is connected with the transmitter, a mirror can horizontally rotate in 360 degrees on the right side of the case, and a 12V, 1A power supply is externally connected with the teaching aid. A signal is transmitted from external Bluetooth equipment or 3.5mm audio input interface to the transmitter, the signal is transmitted from the mirror to the receiver after transmitted by the transmitter, and the signal is demodulated by the receiver which is connected with the sound box, the signal is transmitted to the sound box, and the transmitter, the receiver and the sound box are separately connected with the 12V, 1A power supply. According to the invention, the structure is simple, the operation is simple and convenient, the interactivity is good, in a demonstration process, the teaching aid can vividly and interestingly show a process of the visible light as one of electromagnetic wave transmitting with signal, a student can make a sound signal of a personal terminal to externally connect with the teaching aid and can move the mirror to change a light path, so that the student can learn the principle of the technology, the interests of the student can be effectively stimulated in teaching process, and the student can easily understand the principle of the visible light communication transmission signal.

Description

technical field [0001] The invention relates to a teaching aid, in particular to a demonstration teaching aid for visible light communication. Background technique [0002] Light waves are ubiquitous in life. As one of the most important branches of physics, light waves are an indispensable part of the teaching process. Visible light communication is currently a research hotspot in the wireless field at home and abroad, and the carrier of its signal propagation is light waves. The use of appropriate demonstration teaching aids can not only cultivate students' ability of observation and understanding, but also help them improve their ability of analysis and thinking, and it is easier to provide students with opportunities to explore and innovate across disciplines. For middle school students, as long as their interest in learning is aroused, they will actively devote themselves to learning with enthusiasm, and the classroom will become open, active, and the atmosphere will b...

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