CN110310549B - Visible light communication, location scientific research teaching integration experimental apparatus - Google Patents
Visible light communication, location scientific research teaching integration experimental apparatus Download PDFInfo
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- CN110310549B CN110310549B CN201910591873.7A CN201910591873A CN110310549B CN 110310549 B CN110310549 B CN 110310549B CN 201910591873 A CN201910591873 A CN 201910591873A CN 110310549 B CN110310549 B CN 110310549B
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Abstract
The invention discloses a visible light communication and positioning scientific research and teaching integrated experimental device which comprises a detachable cubic frame, an emission end installation grid which is installed inside the cubic frame and can slide up and down along a cubic frame upright post for positioning, and a receiving end which is installed at the bottom of the cubic frame, wherein each outer surface of the frame is also provided with a detachable light shield.
Description
Technical Field
The invention relates to a visible light experimental device, in particular to a visible light communication, positioning, scientific research and teaching integrated experimental device.
Background
Nowadays, the main part of wireless communication is radio communication with electromagnetic waves as transmission carriers, such as cellular mobile communication technology, WIFI, and the like. With the continuous development of mobile internet and multimedia services, the demand for channel capacity for wireless communication is increasing. Compared with the traditional radio communication, the visible light communication has the advantages of rich spectrum resources, no electromagnetic radiation, high signal-to-noise ratio and the like, so that the visible light communication becomes one of the research hotspots in the field of the wireless communication.
The main application scenarios of visible light communication include: (1) communication in daily life. The indoor lighting system has the advantages that the indoor lighting system meets large data volume requirements in daily life, such as high-definition video stream transmission and high-speed data stream downloading, and with the development of the LED lamp, the indoor lighting system can simultaneously give consideration to information transmission. (2) And (4) indoor positioning. The indoor positioning system based on visible light can obtain higher positioning precision due to the fact that the indoor positioning system based on visible light has the problems of low system stability, low accuracy and the like in the modes of WIFI signals, Bluetooth signals, ultrasonic waves and the like. (3) Application in aviation. Visible light communication is free of electromagnetic interference, can be applied to aviation communication, and has been used. (4) Underwater communication. The problems of attenuation, electromagnetic interference and the like can be well overcome in water by visible light communication, and the method is a popular research direction of underwater communication.
Therefore, visible light communication is a problem of intense research in the communication field of various colleges and universities. However, at present, there is no finished visible light communication and positioning experimental device, and students and researchers can directly perform visible light technical research without being focused on the implementation of a bottom hardware system.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a visible light communication and positioning scientific research and teaching integrated experimental device, which realizes the adjustment of communication distance by an emitting end fixed grid which is arranged on a cubic outer frame and can adjust the height, realizes the simulation of different communication working conditions by flexibly arranging the number and the layout of LED light sources at an emitting end and flexibly arranging the number and the layout of photoelectric detectors at a receiving end, and realizes the simulation of different communication environments by installing and disassembling different numbers of light shields, thereby realizing the communication and positioning research of visible light in one device without paying attention to bottom hardware equipment.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a visible light communication and positioning scientific research and teaching integrated experimental device is characterized by comprising a cubic outer frame, an emission end fixing grid and a positioning and communication state display screen;
the device also comprises a transmitting end driving circuit, a transmitting end digital signal processing platform, a receiving end amplifying circuit, a receiving end digital signal processing platform, a photoelectric detector and a direct current voltage stabilizing circuit;
the outer surface of the cubic outer frame is provided with a light shield;
one or more receiving ends are arranged on the bottom surface of the cubic outer frame, and the number and the layout of the receiving ends are determined by the purpose of an experiment;
one or more light sources can be fixed on the fixed grid of the emitting end, and the number and the layout of the light sources are determined by the purpose of experiments;
the transmitting end fixing grid can slide up and down along the upright post of the cubic outer frame and is positioned through the plane height adjusting buckle;
the light source is connected with the transmitting end driving circuit, and the transmitting end driving circuit is connected with the transmitting end digital signal processing platform;
the photoelectric detector is connected with a receiving end amplifying circuit, the receiving end amplifying circuit is connected with a receiving end digital signal processing platform, and the receiving end digital signal processing platform is connected with a positioning communication state display screen.
Preferably, the emitter end fixing grid is parallel to the bottom face of said cubic outer frame.
Preferably, the cube outer frame is detachable, and 12 straight rod edges of the cube are fixed through 8 three-way connectors.
Preferably, the transmitting end fixing grids are fixed on the upright posts of the cubic outer frame in a bolt tightening mode, and when the bolts are screwed out, the transmitting end fixing grids can slide up and down along the upright posts of the cubic outer frame.
Preferably, the transmitting end fixing grids are fixed on the upright posts of the cubic outer frame in a spring pressing mode, and when the springs are compressed, the transmitting end fixing grids can slide up and down along the upright posts of the cubic outer frame.
Preferably, the transmitting end driving circuit and the transmitting end digital signal processing platform are fixed on a transmitting end fixing grid.
Preferably, the receiving end amplifying circuit, the receiving end digital signal processing platform and the photoelectric detector are fixed on the bottom surface of the cubic outer frame.
Preferably, the outer surface of the cubic outer frame, except for the bottom surface, is provided with light shields, each of which can be individually attached or detached.
Preferably, the light shield of the cubic outer frame is manufactured by adopting a five-pass silvering process.
According to the technical scheme, the height and the angle of the LED light source at the transmitting end relative to the photoelectric sensor at the receiving end and the layout and the number of the LED light source at the transmitting end and the photoelectric sensor at the receiving end are flexibly adjusted, and the illuminance is adjusted through the light shield, so that the all-state simulation of the visible light communication positioning research is realized. Therefore, the method has the remarkable characteristics of simplicity, convenience and feasibility, and improvement on research efficiency and display capacity.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view showing the connection relationship between a three-way connector of a cubic outer frame and a straight rod edge;
FIG. 3 is a schematic diagram of a flexible layout of light sources on an emitter mounting grid in the present invention;
FIG. 4 is a schematic view of a flat height adjustment buckle according to the present invention;
FIG. 5 is a transmitting end schematic of the present invention;
FIG. 6 is a receiving end schematic diagram of the present invention;
FIG. 7 is a diagram of a transmit side circuit of the present invention;
fig. 8 is a diagram of a transmitting end circuit of the present invention;
in the figure: the LED lamp is characterized in that 1 is a cubic outer frame, 2 is an emitting end mounting grid, 3 is the bottom surface of the cubic outer frame, 4 is a three-way connector, 5 is a straight rod edge, and 6 is a light source.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
In the following detailed description of the embodiments of the present invention, in order to clearly illustrate the structure of the present invention and to facilitate explanation, the structure shown in the drawings is not drawn to a general scale and is partially enlarged, deformed and simplified, so that the present invention should not be construed as limited thereto.
In the following description of the present invention, please refer to fig. 1-8, in which fig. 1 is a schematic structural diagram of the present invention. As shown in figure 1 of the drawings, in which,
a visible light communication and positioning scientific research and teaching integrated experimental device comprises a cubic outer frame, an emission end fixing grid and a positioning and communication state display screen; the device also comprises a transmitting end driving circuit, a transmitting end digital signal processing platform, a receiving end amplifying circuit, a receiving end digital signal processing platform, a photoelectric detector and a direct current voltage stabilizing circuit.
The cube outer frame is detachable, and 12 straight rod edges of the cube are fixed through 8 three-way connectors, as shown in fig. 2. The detachable cubic outer frame is convenient to carry and maintain.
The transmitting end fixing grids can slide up and down along the upright posts of the cubic outer frame and are positioned through the plane height adjusting buckles, as shown in fig. 4. The emitting end fixed grids are parallel to the bottom surface of the cubic outer frame. When the influence of the transmission distance and different receiving angles on the visible light communication performance is researched, the four height adjusting buckles on the upright posts of the cubic outer frame can be adjusted, the distance between the LED emitting plane and the receiving plane is changed, and the attenuation condition of the light intensity signal and the change of the error rate when the distance is increased are researched.
In one case, the fixed grid of the transmitting end is fixed on the upright post of the cubic outer frame in a bolt jacking mode, and when the bolt is screwed out, the fixed grid of the transmitting end can slide up and down along the upright post of the cubic outer frame. In another case, the transmitting end fixing grids are fixed on the columns of the cubic outer frame in a spring pressing mode, and when the springs are compressed, the transmitting end fixing grids can slide up and down along the columns of the cubic outer frame.
The outer surface of the cubic outer frame is provided with a light shield. Except that the bottom surface is provided with the light shield, each light shield can be independently installed or detached, and the light shield is manufactured by adopting a five-channel silver coating process.
When the ideal environment and the influence of background light noise need to be researched, five silver-coated process light shields can be covered on five surfaces (except the bottom surface) of a square body, and the sun background noise in daytime can be researched by opening the light shields, wherein the light shielding rate of the five silver-coated process light shields can reach 99%.
One or more receiving ends are arranged on the bottom surface of the cubic outer frame, and the number and the layout of the receiving ends are determined by the purpose of an experiment; one or more light sources may be fixed to the emission end fixing grid, the number and arrangement of the light sources being determined by the purpose of experiment, as shown in fig. 3.
When different layouts of the LED light sources are researched to influence the visible light positioning and communication performance, researchers and experimenters can flexibly change the number and the positions of the LED light sources and flexibly configure the LED light sources at the cross points of the LED emitting grids, so that the LED light sources are flexible and convenient. When the influence of different receiving angles on the visible light communication performance is researched, the position of the receiving end on the bottom surface can be changed, and therefore the visible light reaching angle of the receiving end is changed.
The light source is connected with the transmitting end driving circuit, and the transmitting end driving circuit is connected with the transmitting end digital signal processing platform. In this embodiment, the transmitting end driving circuit and the transmitting end digital signal processing platform are fixed on the transmitting end fixed grid.
In the specific embodiment, the light source adopts a 3W white light LED, the emitting end driving circuit adopts a follower for impedance matching, an NPN triode is used for current amplification, and the emitting end digital signal processing platform adopts a DE2-115 experiment platform.
When different visible light communication modulation and demodulation modes are researched, corresponding programs are written on a DE2-115 experimental platform, the modulation and demodulation modes are changed, and the performances of the modulation and demodulation modes are researched.
The photoelectric detector is connected with a receiving end amplifying circuit, the receiving end amplifying circuit is connected with a receiving end digital signal processing platform, and the receiving end digital signal processing platform is connected with a positioning communication state display screen. In this embodiment, the receiving end amplifying circuit, the receiving end digital signal processing platform and the photodetector are fixed on the bottom surface of the cubic outer frame.
In this embodiment, the photodetection sensor uses a hamamatsu S1336-5BQ silicon photodiode, the receiving end amplification circuit includes a transimpedance amplifier, a low-pass filter, a main amplifier, and a digital signal processing module, and the receiving end digital signal processing module uses a DE2-115FPGA platform. The receiving end display screen adopts a 3.5-inch touch liquid crystal screen module TFT LCD.
When circuit modules of a transmitting end and a receiving end need to be changed and improved, because the amplifying circuit adopts a modular design, experimenters can flexibly add circuit modules, such as an equalizer, a filter and the like.
When the digital signal processing platform needs to be changed, for example, the digital signal processing platform is changed into an STM32 processor, and due to the adoption of the modular design, an experimenter only needs to change the relevant part of the platform-side interface circuit, so that the platform can be replaced.
When a visible light MIMO system needs to be researched, an experimenter only needs to adjust the structure of the photoelectric detector at the receiving end, and the experiment and display requirements of the visible light MIMO system can be met.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (9)
1. A visible light communication and positioning scientific research and teaching integrated experimental device is characterized by comprising a cubic outer frame, an emission end fixing grid and a positioning and communication state display screen;
the device also comprises a transmitting end driving circuit, a transmitting end digital signal processing platform, a receiving end amplifying circuit, a receiving end digital signal processing platform, a photoelectric detector and a direct current voltage stabilizing circuit;
the outer surface of the cubic outer frame is provided with a light shield;
one or more receiving ends are arranged on the bottom surface of the cubic outer frame, and the number and the layout of the receiving ends are determined by the purpose of an experiment;
one or more light sources can be fixed on the fixed grid of the emitting end, and the number and the layout of the light sources are determined by the purpose of experiments;
the transmitting end fixing grid can slide up and down along the upright post of the cubic outer frame and is positioned by using a plane height adjusting buckle;
the light source is connected with the transmitting end driving circuit, and the transmitting end driving circuit is connected with the transmitting end digital signal processing platform;
the photoelectric detector is connected with a receiving end amplifying circuit, the receiving end amplifying circuit is connected with a receiving end digital signal processing platform, and the receiving end digital signal processing platform is connected with a positioning communication state display screen.
2. The experimental device of claim 1 wherein the emitter end fixation grid is parallel to the bottom surface of the cubic outer frame.
3. The laboratory device according to claim 1, wherein the outer frame of the cube is detachable, and the 12 straight sides of the cube are fixed by 8 three-way connectors.
4. The experimental device as claimed in claim 1, wherein the transmitting end fixing grids are fixed on the posts of the cubic outer frame in a bolt tightening manner, and when the bolts are unscrewed, the transmitting end fixing grids can slide up and down along the posts of the cubic outer frame.
5. The experimental device as claimed in claim 1, wherein the transmitting end fixing grids are fixed on the posts of the cubic outer frame in a spring pressing manner, and when the springs are compressed, the transmitting end fixing grids can slide up and down along the posts of the cubic outer frame.
6. The experimental apparatus as claimed in claim 1, wherein the emitter driving circuit and the emitter digital signal processing platform are fixed on an emitter fixing grid.
7. The experimental set-up of claim 1, wherein the receiver amplifier circuit, the receiver digital signal processing platform and the photodetector are mounted on the bottom surface of the cubic outer frame.
8. The laboratory device according to claim 1, wherein the cube outer frame is provided with light shields on the outer surfaces thereof except for the bottom surface, each light shield being individually attachable and detachable.
9. The experimental device as claimed in claim 1, wherein the light shield of the cubic outer frame is made by five silver coating processes.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910591873.7A CN110310549B (en) | 2019-07-01 | 2019-07-01 | Visible light communication, location scientific research teaching integration experimental apparatus |
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| CN201910591873.7A CN110310549B (en) | 2019-07-01 | 2019-07-01 | Visible light communication, location scientific research teaching integration experimental apparatus |
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| CN110310549A CN110310549A (en) | 2019-10-08 |
| CN110310549B true CN110310549B (en) | 2021-09-07 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104104448A (en) * | 2014-07-16 | 2014-10-15 | 上海航天电子通讯设备研究所 | Visible light communication receiving and transmitting integrated device based on Ethernet |
| CN106023728A (en) * | 2016-04-12 | 2016-10-12 | 刘泽畅 | LED visible light audio frequency transmission demonstration device applying diversity reception technology |
| CN205810228U (en) * | 2016-04-15 | 2016-12-14 | 中国科学院上海技术物理研究所 | A kind of visible light communication demonstration teaching aid |
| CN205945745U (en) * | 2016-08-03 | 2017-02-08 | 北京杏林睿光科技有限公司 | Visible light communication experimental apparatus |
| CN107657870A (en) * | 2017-10-18 | 2018-02-02 | 徐鹏程 | A kind of visible light communication technology shows experimental provision |
| CN208128252U (en) * | 2018-03-13 | 2018-11-20 | 杭州电子科技大学 | A kind of visible light communication demonstrator |
-
2019
- 2019-07-01 CN CN201910591873.7A patent/CN110310549B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104104448A (en) * | 2014-07-16 | 2014-10-15 | 上海航天电子通讯设备研究所 | Visible light communication receiving and transmitting integrated device based on Ethernet |
| CN106023728A (en) * | 2016-04-12 | 2016-10-12 | 刘泽畅 | LED visible light audio frequency transmission demonstration device applying diversity reception technology |
| CN205810228U (en) * | 2016-04-15 | 2016-12-14 | 中国科学院上海技术物理研究所 | A kind of visible light communication demonstration teaching aid |
| CN205945745U (en) * | 2016-08-03 | 2017-02-08 | 北京杏林睿光科技有限公司 | Visible light communication experimental apparatus |
| CN107657870A (en) * | 2017-10-18 | 2018-02-02 | 徐鹏程 | A kind of visible light communication technology shows experimental provision |
| CN208128252U (en) * | 2018-03-13 | 2018-11-20 | 杭州电子科技大学 | A kind of visible light communication demonstrator |
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