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Switching system and method of visible light communication and power line communication

A technology of power line communication and visible light communication, which is applied in the field of visible light communication, can solve the problems that the system cannot communicate normally, and achieve the effect of strong adaptability to the environment and wide applicability

Active Publication Date: 2017-07-11
THE PLA INFORMATION ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the existing power line communication and visible light communication integration system, the power line communication signal is transmitted to the LED light after a certain modulation process, that is, the power line communication signal is converted into visible light communication. Once the LED light is damaged, the entire The system cannot communicate normally

Method used

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  • Switching system and method of visible light communication and power line communication
  • Switching system and method of visible light communication and power line communication
  • Switching system and method of visible light communication and power line communication

Examples

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Embodiment 1

[0059] Please refer to Figure 1 to Figure 2 , Embodiment 1 of the present invention is:

[0060] A switching system for visible light communication and power line communication, including a first switch 4, a signal injection circuit 5, an LED power supply line 6, an LED lamp 7, a visible light receiving module 8, a second switch 13, a wireless radio frequency transmission circuit 9, a wireless radio frequency transmitting antenna 10, radio frequency receiving antenna 11, radio frequency receiving circuit 12,

[0061] The first switch 4 is electrically connected to the signal injection circuit 5, the signal injection circuit 5 is connected to the LED power supply line 6, the LED power supply line 6 is electrically connected to the LED lamp 7, and the visible light The receiving module 8 is used to receive the light signal of the LED lamp 7, and the visible light receiving module 8 is electrically connected to the second switch 13;

[0062] The first switch 4 is also electric...

Embodiment 2

[0065] Please refer to image 3 , the second embodiment of the present invention is:

[0066] A switching system for visible light communication and power line communication, on the basis of Embodiment 1, further includes a first current detection circuit 1, a first comparator 2, a first MCU 3, a second current detection circuit 14, and a second comparator 15 , the second MCU16, the first current detection circuit 1 is used to detect the current of the LED lamp 7, the first current detection circuit 1 is electrically connected to the first comparator 2, and the first comparator 2 It is electrically connected to the first MCU3, and the first MCU3 is electrically connected to the first switch 4; the second current detection circuit 14 is used to detect the current of the visible light receiving module 8, and the second current The detection circuit 14 is electrically connected to the second comparator 15, the second comparator 15 is electrically connected to the second MCU16, a...

Embodiment 3

[0068] Please refer to Figure 4 , Embodiment three of the present invention is:

[0069]A switching system for visible light communication and power line communication, on the basis of the second embodiment, further includes a first carrier communication module 17 and a second carrier communication module 18, the first carrier communication module 17 and the first switch 4 are electrically connected, the second carrier communication module 18 is electrically connected to the second switch 13, the first carrier communication module 17 is connected to the external signal circuit 21, and the second carrier communication chip 20 is connected to the The above-mentioned user terminal equipment 22 is connected. The transmission medium of the external signal circuit 21 and the user terminal equipment 22 can be any one of power lines, coaxial cables, electromagnetic waves, air, and optical fibers.

[0070] The signal of the external signal circuit 21 reaches the first switch 4 after...

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Abstract

The invention provides a switching system and method of visible light communication and power line communication. According to the system, downlink visible light communication is realized through an LED lamp and a visible light reception module, downlink radio frequency communication is realized through a radio frequency transmitting circuit and a second radio frequency receiving circuit, and switching between visible light communication and radio frequency communication is realized through a first change-over switch and a second change-over switch. If signals of visible light communication are weak, visible light communication is switched to radio frequency communication, and the detection of the signals of visible light communication is realized through a current detection circuit. Normal operation of communication is guaranteed through two downlink communication modes.

Description

technical field [0001] The present invention relates to the technical field of visible light communication, in particular to a switching system and method for visible light communication and power line communication. Background technique [0002] In the existing power line communication and visible light communication integration system, the power line communication signal is transmitted to the LED light after a certain modulation process, that is, the power line communication signal is converted into visible light communication. Once the LED light is damaged, the entire The system cannot communicate normally. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a switching system and method for visible light communication and power line communication that can still communicate when the LED lamp is damaged. [0004] In order to solve the problems of the technologies described above, the technical solution adopted in ...

Claims

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Application Information

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IPC IPC(8): H04B10/116H04B3/54
CPCH04B3/54H04B10/116
Inventor 张剑朱义君仵国锋田忠骏王超
Owner THE PLA INFORMATION ENG UNIV
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