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Indoor Visible Light Communication System Based on Fiber Fusion

A technology of visible light communication and optical fiber, applied in the field of communication, can solve the problem of mismatch of signal standards, and achieve the effect of improving the system bandwidth and ensuring the effect of signal transmission.

Active Publication Date: 2022-05-10
NANCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to propose an indoor visible light communication system under the fusion of optical fibers to solve the problem of signal standard mismatch in the prior art when optical fibers are integrated into the visible light communication system

Method used

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  • Indoor Visible Light Communication System Based on Fiber Fusion
  • Indoor Visible Light Communication System Based on Fiber Fusion
  • Indoor Visible Light Communication System Based on Fiber Fusion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0065] see figure 2 , image 3 and Figure 6 to Figure 9 , which shows the indoor visible light communication system under the fusion of optical fibers in the second embodiment of the present invention. The difference between the indoor visible light communication system under the fusion of optical fibers in this embodiment and the first embodiment is that:

[0066] The user terminal includes a medium converter 6 , a user terminal signal transmitting module 7 , a user terminal signal receiving module 8 , a second light emitting diode 9 and a second photodiode 10 .

[0067]The user terminal signal receiving module 8, its receiving end is connected to the second photodiode 10, after the second photodiode 10 receives the optical signal and converts the optical signal into an electrical signal, converts the current signal into a voltage signal, And the voltage signal is amplified to meet the network protocol standard.

[0068] The medium converter 6 is connected between the ne...

Embodiment 3

[0086] see Figure 4 , Figure 9 and Figure 10 , which shows the indoor visible light communication system under the fusion of optical fibers in the third embodiment of the present invention. The difference between the indoor visible light communication system under the fusion of optical fibers in this embodiment and the first embodiment is that:

[0087] The common base amplifying circuit 14 includes a common base transistor, a first group of voltage resistors and a second group of voltage resistors, and the first group of voltage resistors is used to provide bias for the base of the common base transistor. set voltage, the second set of piezoresistors is used to provide a bias voltage for the emitter of the common base triode, and the base of the common base triode is connected to the two divided voltages of the first set of piezoresistors Between the resistors, the emitter of the common base transistor is connected between the two voltage dividing resistors of the second...

Embodiment 4

[0089] see Figure 4 and Figure 7 , which shows the indoor visible light communication system under the fusion of optical fibers in the fourth embodiment of the present invention. The difference between the indoor visible light communication system under the fusion of optical fibers in this embodiment and the first embodiment is that:

[0090] The base of the common collector amplifying circuit 15 is connected with a DC blocking capacitor, which isolates the DC power and inputs the AC power signal.

[0091] A DC blocking capacitor is connected in series between the common collector amplifying circuit 15 and the pre-equalizing circuit 16 for isolating DC power and only allowing AC power to pass through and deliver to the pre-equalizing circuit 16 .

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Abstract

The present invention provides an indoor visible light communication system under the fusion of optical fibers, including a photoelectric converter, which converts the optical fiber signal introduced by the optical fiber into an electrical signal and sends it to the signal transmitting module of the access terminal, and transmits the signal sent by the signal receiving module of the access terminal. The electrical signal is converted into an optical fiber signal and input into the optical fiber; the signal transmitting module at the access end receives the electrical signal sent by the photoelectric converter, equalizes and amplifies the electrical signal to drive the first light-emitting diode to send out an optical signal and enhance and flatten the first light-emitting diode The frequency response of the diode is sent to the user terminal, and the user terminal converts the optical signal into a voltage signal that meets the network protocol standard to input to the network interface; the signal receiving module of the access terminal receives the network signal from the user terminal when the first photodiode receives the signal. After the voltage signal of the interface is converted into an optical signal and the optical signal is converted into an electrical signal, the current signal is converted into a voltage signal, and the voltage signal is amplified to adapt to the optical fiber signal.

Description

technical field [0001] The invention relates to the field of communication, in particular to an indoor visible light communication system under the fusion of optical fibers. Background technique [0002] With the development of wireless communication, spectrum resources are increasingly scarce, and it is imminent to find wider and more efficient communication frequency bands and wireless access methods that are more conducive to popularization. Visible light communication technology was born under this background. It can simultaneously realize the two functions of high-speed information communication and daily lighting at a relatively low cost. Compared with traditional radio frequency communication technology, visible light communication technology has the characteristics of safety, green environmental protection, no electromagnetic interference, wide frequency range, etc., and is suitable for applications in many fields such as smart home, intelligent transportation, under...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/116H04B10/25
CPCH04B10/116H04B10/25
Inventor 王玉皞陈煊邦许林余礼苏段贡献菅杰罗贵贤
Owner NANCHANG UNIV