A detection method, setting method and detection device of a visible light communication system

A technology of visible light communication and detection device, which is applied in the field of visible light communication, can solve problems such as unfound and perfect technical solutions, and achieve the effects of reducing measurement errors, improving measurement accuracy, and accurate electrical signals

Active Publication Date: 2021-05-11
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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Problems solved by technology

At present, for determining the optimal modulation degree by measuring the relationship between the modulation degree and the bit error rate of the visible light communication system, there is no perfect technical solution and no relevant technical literature has been found.

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  • A detection method, setting method and detection device of a visible light communication system
  • A detection method, setting method and detection device of a visible light communication system
  • A detection method, setting method and detection device of a visible light communication system

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Embodiment Construction

[0026] In order to make the purpose, technical solutions and advantages of the present disclosure clearer, the present disclosure will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0027] The first embodiment of the present disclosure provides a detection device for a visible light communication system, refer to figure 1 , to describe the structure and working principle of the device in detail.

[0028] The detection device includes a bit error rate tester 1 , a current probe 2 and an oscilloscope 3 . The visible light communication system includes a modulation circuit 4 , a light emitting diode 5 , a first convex lens 6 , a second convex lens 7 , a detector 8 and an optical receiver circuit 9 . Wherein, the detection device is used to detect the bit error rate corresponding to the preset modulation degree of the visible light communication system.

[0029] The bit error rate tester 1 is mainl...

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Abstract

A detection method, a setting method, and a detection device of a visible light communication system, used for detecting a bit error rate corresponding to a visible light communication system under a preset modulation degree, wherein the visible light communication system includes a light emitting diode (5), and the detection method includes: S1, calculate the first current value of the light-emitting diode (5) under the preset modulation degree; S2, modulate an electrical signal according to the preset modulation degree and then input it to the light-emitting diode (5), and obtain the light-emitting diode (5) the second current value; S3, adjust the amplitude of the electrical signal, and when the second current value is equal to the first current value, record the amplitude; S4, repeat step S3 according to the preset number of times, and obtain the preset number of amplitudes, And obtain the average value of the amplitude under the preset number of times; S5, input the electric signal whose amplitude is the average value into the visible light communication system, and obtain the bit error rate of the visible light communication system. During the detection process, multiple measurements are averaged to reduce measurement errors.

Description

technical field [0001] The present disclosure relates to the technical field of visible light communication, and in particular, to a detection method, a setting method and a detection device of a visible light communication system. Background technique [0002] Light-emitting diodes have the advantages of low power consumption, long life, and environmental protection. As a new generation of lighting sources, they are replacing traditional incandescent light. They also have good visible light communication capabilities and realize optical wireless information transmission, that is, optical communication technology. Research hotspots at home and abroad. [0003] The transmitting end of the visible light communication system often adopts intensity modulation for the modulation of light-emitting diodes, and direct detection is often used at the receiving end. Increasing the modulation degree can increase the signal optical power, but an excessively high modulation degree may red...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/116H04B10/516H04B10/079
CPCH04B10/079H04B10/116H04B10/516
Inventor 陈雄斌靳永超陈弘达
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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