CN218446455U - Novel visible light super-Nyquist data transmission device - Google Patents

Abstract

The utility model discloses a novel visible light super-Nyquist data transmission device, which comprises a sending end, a receiving end and a power module, wherein the power module is used for supplying power to the sending end and the receiving end; the first terminal is connected with the FPGA, the FPGA is electrically connected with the digital-to-analog conversion module, the digital-to-analog conversion module is electrically connected with the first voltage amplification module through the first low-pass filtering module, and the first voltage amplification module is electrically connected with the LD module; the photoelectric detection module is electrically connected with the second low-pass filtering module through the I/V conversion module, the I/V conversion module is electrically connected with the second voltage amplification module through the second low-pass filtering module, and the second voltage amplification module is connected with the second terminal through the voltage comparison module.

Description

Novel visible light super-Nyquist data transmission device

Technical Field

The utility model belongs to the data transmission field, concretely relates to novel visible light surpasses nyquist data transmission device.

Background

The visible light communication is green, environment-friendly and high in safety, and has rich spectrum resources of 400 THz. However, as the demand for data transmission increases, higher requirements are placed on the transmission rate of the system. The super-nyquist technology breaks the limit of the nyquist rate by compressing the symbol intervals, and the introduction of the super-nyquist technology in a visible light system can further improve the transmission rate and the spectrum utilization rate of the system.

SUMMERY OF THE UTILITY MODEL

The utility model aims at utilizing optical communication technique, super Nyquist technique to realize the real-time transmission of information, solved the scene that the radio frequency technology should not use.

In order to solve the above problems existing in the prior art, the utility model discloses the technical scheme who adopts is:

the utility model provides a novel visible light super Nyquist data transmission device, includes sending end, receiving terminal and power module, power module is used for supplying power to sending end and receiving terminal.

The transmitting terminal comprises a first terminal, an FPGA, a digital-to-analog conversion module, a first low-pass filtering module, a first voltage amplification module and an LD module, wherein the first terminal is connected with the FPGA, the FPGA is electrically connected with the digital-to-analog conversion module, the digital-to-analog conversion module is electrically connected with the first voltage amplification module through the first low-pass filtering module, and the first voltage amplification module is electrically connected with the LD module.

The receiving end comprises a photoelectric detection module, an I/V conversion module, a second low-pass filtering module, a second voltage amplification module, a voltage comparison module and a second terminal, wherein the photoelectric detection module is electrically connected with the second low-pass filtering module through the I/V conversion module, the I/V conversion module is electrically connected with the second voltage amplification module through the second low-pass filtering module, and the second voltage amplification module is connected with the second terminal through the voltage comparison module.

The transmitting end comprises a first terminal, an FPGA, a digital-to-analog conversion module, a first low-pass filter module, a first voltage amplification module and an LD module, wherein the output end of the first terminal is connected with the input end of the FPGA, the output end of the FPGA is connected with the input end of the digital-to-analog conversion module, the output end of the digital-to-analog conversion module is connected with the input end of the first low-pass filter module, the output end of the first low-pass filter module is connected with the input end of the first voltage amplification module, and the output end of the first voltage amplification module is connected with the input end of the LD module; the receiving end comprises a photoelectric detection module, an I/V conversion module, a second low-pass filtering module, a second voltage amplification module, a voltage comparison module and a second terminal, wherein the output end of the photoelectric detection module is connected with the input end of the I/V conversion module, the output end of the I/V conversion module is connected with the input end of the second low-pass filtering module, the output end of the second low-pass filtering module is connected with the input end of the second voltage amplification module, the output end of the second voltage amplification module is connected with the input end of the voltage comparison module, and the output end of the voltage comparison module is connected with the input end of the second terminal.

Furthermore, the main control chip of the FPGA adopts AlteraCycleiVEP 4CE115F29C7.

Further, the digital-to-analog conversion module adopts a DAC902 chip.

Further, the first low-pass filtering module adopts an LT6600 chip.

Further, the LD module uses MTE5066N5J to convert an analog signal into an optical signal.

Further, the photoelectric detection module is a photodiode, and the specific model is LSSAPD9-500.

Further, the I/V conversion module adopts a TPS55340 chip.

Furthermore, the second low-pass filter module adopts an LTC1568 chip.

Further, the voltage amplification module adopts an OPA657 chip.

Furthermore, the voltage comparison module adopts a TLV3501 chip, so that the conversion from optical signals to digital signals is realized, and finally, data is displayed through the data processing end.

Further, the multi-output power supply module adopts an LM1117 series chip to provide stable +/-5V and 10V power supplies.

Furthermore, the first terminal and the second terminal are both personal computers.

The utility model has the advantages that: the utility model has the characteristics of small, with low costs, no electromagnetic interference etc, be applicable to in the visible light scenes such as indoor location navigation, environmental monitoring, mine communication, can real-time transmission communication data.

Drawings

Fig. 1 is a block diagram of the present invention.

Fig. 2 is a working principle diagram of the present invention.

Fig. 3 is a circuit diagram of the digital-to-analog conversion module, the first low-pass filtering module, the first voltage amplifying module, and the LD module.

FIG. 4 is a circuit diagram of a photodiode and an I/V conversion module.

Fig. 5 is a circuit diagram of the second voltage amplifying module.

Fig. 6 is a circuit diagram of the second filtering module, the second voltage amplifying module and the voltage comparing module.

Fig. 7 is a topology structure diagram of the present invention.

Detailed Description

The present invention will be further explained with reference to the drawings and the reference numerals.

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

The terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The following describes in detail embodiments of the present invention with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

Example 1:

as shown in fig. 1, a novel visible light transmission device for data beyond nyquist includes a transmitting end, a receiving end and a power module, where the power module is used to supply power to the transmitting end and the receiving end.

The transmitting end comprises a first terminal, an FPGA, a digital-to-analog conversion module, a first low-pass filtering module, a first voltage amplification module and an LD module, wherein the first terminal is electrically connected with the digital-to-analog conversion module through the FPGA, the digital-to-analog conversion module is electrically connected with the first voltage amplification module through the first low-pass filtering module, and the first voltage amplification module is electrically connected with the LD module.

The receiving end comprises a photoelectric detection module, an I/V conversion module, a second low-pass filtering module, a second voltage amplification module, a voltage comparison module and a second terminal, wherein the photoelectric detection module is electrically connected with the second low-pass filtering module through the I/V conversion module, the I/V conversion module is electrically connected with the second voltage amplification module through the second low-pass filtering module, and the second voltage amplification module is electrically connected with the second terminal through the voltage comparison module.

Example 2:

as shown in fig. 1, a novel visible light super-nyquist data transmission device includes a transmitting end, a receiving end and a power module, where the power module is used to supply power to the transmitting end and the receiving end.

The transmitting terminal comprises a first terminal, an FPGA, a digital-to-analog conversion module, a first low-pass filtering module, a first voltage amplification module and an LD module, wherein the output end of the first terminal is connected with the input end of the FPGA, the output end of the FPGA is connected with the input end of the digital-to-analog conversion module, the output end of the digital-to-analog conversion module is connected with the input end of the first low-pass filtering module, the output end of the first low-pass filtering module is connected with the input end of the first voltage amplification module, and the output end of the first voltage amplification module is connected with the input end of the LD module.

The receiving end comprises a photoelectric detection module, an I/V conversion module, a second low-pass filtering module, a second voltage amplification module, a voltage comparison module and a second terminal, wherein the output end of the photoelectric detection module is connected with the input end of the I/V conversion module, the output end of the I/V conversion module is connected with the input end of the second low-pass filtering module, the output end of the second low-pass filtering module is connected with the input end of the second voltage amplification module, the output end of the second voltage amplification module is connected with the input end of the voltage comparison module, and the output end of the voltage comparison module is connected with the input end of the second terminal.

Example 3:

on the basis of the embodiment 1 or 2, as shown in fig. 2 to 7, the main control chip of the FPGA adopts Altera cycleievep 4CE115F29C7.

The digital-to-analog conversion module adopts a DAC902 chip.

The first low-pass filtering module adopts an LT6600 chip.

The LD module adopts MTE5066N5J to realize conversion from an analog signal to an optical signal.

The photoelectric detection module is a photodiode, and the specific model is LSSAPD9-500.

The I/V conversion module adopts a TPS55340 chip.

The second low-pass filtering module adopts an LTC1568 chip.

The voltage amplification module adopts an OPA657 chip.

The voltage comparison module adopts a TLV3501 chip, so that conversion from optical signals to digital signals is realized, and finally data is displayed through the data processing end.

The multi-output power supply module adopts LM1117 series chips to provide stable +/-5V and 10V power supplies.

The first terminal and the second terminal are both personal computers.

The specific working principle is as follows:

the first terminal sends a digital signal to the FPGA, the FPGA converts the digital signal into an FTN signal and converts the FTN signal into an analog signal through the digital-to-analog conversion module, the analog signal is filtered through the first low-pass filtering module and amplified through the first voltage amplification module, the voltage signal is moved to a linear working area of the LD, and finally the analog signal is converted into an optical signal through the LD module and sent out.

The photoelectric detection module converts the received optical signals into current signals, and since voltage signals need to be processed in the later stage, the current signals are converted into voltage signals meeting a certain relation by the I/V conversion module, the voltage signals are filtered by the second low-pass filtering module, optical noise in a free space can be eliminated, the filtered voltage signals are amplified by the second voltage amplification module, and finally the voltage signals are judged to be 0/1 signals by the voltage comparison module and are output to the second terminal.

The present invention is not limited to the above-mentioned optional embodiments, and any other products in various forms can be obtained by anyone under the teaching of the present invention, and any changes in the shape or structure thereof, all the technical solutions falling within the scope of the present invention, are within the protection scope of the present invention.

Claims (9)

1. A novel visible light super-Nyquist data transmission device is characterized in that: the system comprises a sending end, a receiving end and a power module, wherein the power module is used for supplying power to the sending end and the receiving end;

the transmitting end comprises a first terminal, an FPGA, a digital-to-analog conversion module, a first low-pass filtering module, a first voltage amplification module and an LD module, wherein the first terminal is connected with the FPGA, the FPGA is electrically connected with the digital-to-analog conversion module, the digital-to-analog conversion module is electrically connected with the first voltage amplification module through the first low-pass filtering module, and the first voltage amplification module is electrically connected with the LD module;

the receiving end comprises a photoelectric detection module, an I/V conversion module, a second low-pass filtering module, a second voltage amplification module, a voltage comparison module and a second terminal, wherein the photoelectric detection module is electrically connected with the second low-pass filtering module through the I/V conversion module, the I/V conversion module is electrically connected with the second voltage amplification module through the second low-pass filtering module, and the second voltage amplification module is connected with the second terminal through the voltage comparison module.

2. The novel visible light super-nyquist data transmission device of claim 1, wherein: the main control chip of the FPGA adopts EP4CE115F29C7.

3. The novel visible light super-nyquist data transmission device of claim 1, wherein: the digital-to-analog conversion module adopts a DAC902 chip.

4. The novel visible light super-nyquist data transmission device of claim 1, wherein: the first low-pass filtering module adopts an LT6600 chip.

5. The novel visible light super-nyquist data transmission device of claim 1, wherein: the LD module adopts MTE5066N5J.

6. The novel visible light super-nyquist data transmission apparatus as claimed in claim 1, wherein: the I/V conversion module adopts a TPS55340 chip.

7. The novel visible light super-nyquist data transmission apparatus as claimed in claim 4, wherein: the second low-pass filtering module adopts an LTC1568 chip.

8. The novel visible light super-nyquist data transmission apparatus as claimed in claim 1, wherein: the voltage amplification module adopts an OPA657 chip.

9. The novel visible light super-nyquist data transmission apparatus as claimed in claim 1, wherein: the voltage comparison module adopts a TLV3501 chip.

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