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Audio signal visible light transmitting device

An audio signal and transmission device technology, applied in the field of audio signal visible light transmission device, can solve the problems of electromagnetic radiation, occupation of radio frequency spectrum, low transmission power of radio frequency communication, etc., to achieve no electromagnetic interference and no electromagnetic radiation, no occupation of radio frequency spectrum, The effect of high transmit power

Inactive Publication Date: 2015-05-06
QINGDAO HUANGHAI UNIV
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0003] Traditional radio frequency communication has low transmission power, occupies the radio frequency spectrum, has electromagnetic interference and electromagnetic radiation, and consumes a lot of energy

Method used

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  • Audio signal visible light transmitting device
  • Audio signal visible light transmitting device
  • Audio signal visible light transmitting device

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Embodiment Construction

[0023] combined with Figures 1 to 3 The specific embodiment of the present invention is described further:

[0024] Audio signal visible light transmission device, including sending equipment and receiving equipment, said transmitting equipment includes audio signal amplifying circuit, analog-to-digital conversion circuit, first single-chip microcomputer, and LED lamp, the input end of audio signal amplifying circuit is connected with signal source, audio The output end of the signal amplifying circuit is connected to the input end of the analog-to-digital conversion circuit, the output end of the analog-to-digital conversion circuit is connected to the first single-chip microcomputer, and the first single-chip microcomputer is connected to the LED lamp through the LED drive circuit. The first single-chip microcomputer receives the signal from the analog-to-digital conversion circuit and performs modulation and coding, and the single-chip microcomputer transmits the modulatio...

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Abstract

The invention discloses an audio signal visible light transmitting device. The audio signal visible light transmitting device comprises a transmitting device and a receiving device. An input end of an audio signal amplification circuit in the transmitting device is connected with a signal source, and an output end of the audio signal amplification circuit in the transmitting device is connected with an input end of an analog-digital conversion circuit. An output end of the analog-digital conversion circuit is connected with a first single chip computer, and the first single chip computer is connected with an LED (light emitting diode) lamp through an LED drive circuit. A solar photoelectric cell in the receiving device receives light signals sent out by the LED lamp. The light signals are amplified by an amplifying circuit, and then are shaped by a signal conditioning circuit, and finally digital signals of a transmitting end are obtained. The first single chip computer is used to receive and demodulate the digital signals transmitted by the signal conditioning circuit, and the signals after being regulated are converted into analog signals through the analog-digital conversion circuit, and then a horn is driven to sound. The audio signal visible light transmitting device has the advantages of being high in transmitting power, capable of not occupying a radio frequency spectrum, and free from electromagnetic interference and electromagnetic radiation, saving energy and the like.

Description

technical field [0001] The invention relates to an audio signal visible light transmission device. Background technique [0002] In recent years, LED lighting technology, known as "green lighting", has developed rapidly. Compared with traditional lighting sources, white LEDs not only have low power consumption, long service life, small size, and environmental protection, but also have the advantages of good modulation performance and high response sensitivity. Utilizing this feature of LEDs, it almost combines the advantages of various traditional light sources, and is known as a revolutionary technology in the era of new solid-state light sources in the 21st century. While it is used for lighting, it can also modulate the signal onto the visible beam of LED for transmission. [0003] Traditional radio frequency communication has low transmission power, occupies the radio frequency spectrum, has electromagnetic interference and electromagnetic radiation, and consumes a lot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/116
Inventor 刘培学姜宝华徐辉陈玉杰赵梅莲王泽松陈峰
Owner QINGDAO HUANGHAI UNIV
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