CN204190771U - A kind of indoor visible light communication up link - Google Patents
A kind of indoor visible light communication up link Download PDFInfo
- Publication number
- CN204190771U CN204190771U CN201420678907.9U CN201420678907U CN204190771U CN 204190771 U CN204190771 U CN 204190771U CN 201420678907 U CN201420678907 U CN 201420678907U CN 204190771 U CN204190771 U CN 204190771U
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- user
- base station
- visible light
- transmitter
- light communication
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Abstract
The utility model discloses a kind of indoor visible light communication up link, comprise base station transmitter, base station receiver and some users, some user transmitters are provided with in the coverage that base station transmitter sends light, base station receiver comprises receiver lens and photodetector array, and the photodetector in photodetector array is cellular distribution; Base station transmitter and base station receiver are arranged on indoor ceiling and are arranged in same structure, and user transmitter and user are placed in same structure.This indoor visible light communication up link carries out the separation of user according to the image space of the modulated light signal of user on photodetector array, mutual interference problem when overcoming the multiple user and base station communication that exist in prior art between the up link of indoor visible light communication, the data of different user are well separated, reduce the power consumption of user simultaneously, add the maneuverability of user.
Description
Technical field
The utility model belongs to technical field of photo communication, relates to a kind of indoor visible light communication up link.
Background technology
Visible light communication (VLC) is a kind of emerging technology combined with illuminator, can provide the solution of a kind of ultrahigh speed, safety, environmental protection for indoor wireless communication.Current point-to-point VLC speed is more than 1Gbps, but be subject to the restriction of indoor environment and optical transmission characteristics, the two-way communication realized between base station (being positioned at ceiling) and user's (being positioned at indoor optional position) has very large difficulty, is mainly that user's separation problem that the mutual interference of multiple user between up link causes is difficult to solve.
Utility model content
The purpose of this utility model is to provide a kind of indoor visible light communication up link, and the data solving the different user that multiple user of existing in prior art causes with mutual interference during base station communication between indoor visible light communication up link are difficult to the technical problem be separated.
The technical scheme that the utility model adopts is, a kind of indoor visible light communication up link, comprise base station transmitter, base station receiver and some users, some user transmitters are provided with in the coverage that base station transmitter sends light, base station receiver comprises receiver lens and photodetector array, and the photodetector in photodetector array is cellular distribution; Base station transmitter and base station receiver are arranged on indoor ceiling and are arranged in same structure, and user transmitter and user are placed in same structure.
Feature of the present utility model is also,
Base station transmitter is made up of white light LEDs and drive circuit.
User transmitter is by modulating Reflex Reflector and modulation circuit forms.
Receiver lens selects BK7 glass material.
Photodetector array, is made up of multiple photodetector and amplifying circuit.
The beneficial effects of the utility model are, utilize the feature of modulation Reflex Reflector orienting reflex, by the modulated light signal orienting reflex of user to base station, and the photodetector array imaging of receiver in base station, the separation of user is carried out by the position of imaging, mutual interference problem when overcoming the multiple user and base station communication that exist in prior art between the up link of indoor visible light communication, the data of different user are well separated, reduce the power consumption of user simultaneously, add the maneuverability of user.
Accompanying drawing explanation
Fig. 1 is indoor visible light communication uplink structure figure;
Fig. 2 is user transmitter structure chart;
Fig. 3 is photodetector array layout structure figure.
In figure, 1. base station transmitter, 2. user transmitter, 3. user, 4. receiver lens, 5. photodetector array.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
See Fig. 1, indoor visible light communication uplink structure figure, comprises base station transmitter 1, some user transmitters 2, some users 3 and base station receiver.Base station transmitter is made up of white light LEDs and associated driver circuitry, sends the white light that the larger luminous power of the angle of divergence is constant; User transmitter is by modulating Reflex Reflector and modulation circuit forms, and light modulated orienting reflex in folded light beam, and is gone back to base station by Data Modulation user 3 sent; User produces the data needing to be sent by up link; The receiver lens of base station receiver, converges on detector array by the reverberation from different user, and lens material selects BK7 glass material; The photodetector array of base station receiver, is made up of photodetector and relevant amplifying circuit, and after user's light signal of incidence is converted to the signal of telecommunication, the recovery data of different user exported, photodetector response wave length scope is between 400nm ~ 700nm.
Wherein, base station transmitter 1 and receiver lens 4, photodetector array 5 are positioned in same structure, form optical transceiver, and be installed on communication indoor ceiling on; Several user transmitters 2 are arranged on base station transmitter and send in the coverage of light, and are fixed on indoor relevant position according to communication requirement, have certain space length between optical transceiver and user transmitter 2; User 3 and user transmitter 2 are placed in same structure, and the data of user 3 send by user transmitter 2.
Base station transmitter realizes primarily of white LED module, for launching a branch of constant white light beam had compared with Vernonia parishii Hook. F. angle.The white light LEDs advantage that volume is little, low in energy consumption owing to having, power output is large, therefore becomes preferred light source of the present utility model.
As shown in Figure 2, directed for incident continuous light retro-reflection, by modulating Reflex Reflector and modulation circuit forms, is modulated on folded light beam to needing the user data sent while the optical receiver of base station by user transmitter.The effect of modulation Reflex Reflector is orienting reflex and modulation, and modulation circuit realizes the modulation control to modulation Reflex Reflector, and modulation circuit is connected to modulation Reflex Reflector by 1 BNC cable.
Base station receiver is made up of receiver lens and photodetector array.Receiver lens mainly receives the reflected light signal of automodulation Reflex Reflector, light signal is converged on detector array, detector array is classified as cellular layout, and the photosurface of detector is positioned at the center of each cellulor, and detector array layout structure as shown in Figure 3.Detector array forms primarily of photodetector module.Wherein photodetector can adopt PIN or APD photodiode.
Indoor visible light communication up link operation principle of the present utility model is: the large power white light LED of base station transmitter 1 sends constant white light and covers some user transmitters 2, the user data that directed for incident white light retro-reflection sends to needs user 3 produced while base station receiver is modulated on folded light beam by user transmitter 2, folded light beam converges through receiver lens 4 imaging on photodetector array 5, geographical position residing for user transmitter 2 is all different, namely multiple user transmitter 2 can not be in a position simultaneously, therefore the imaging convergent point of light beam on photodetector array 5 of user's reflection is also different, that is different user profile is recovered by different photodetectors, thus the user on diverse location is separated, mutual interference problem when multiple user can not be caused simultaneously to send data to base station receiver between up link.
The utility model utilizes the feature of modulation Reflex Reflector orienting reflex, by the modulated light signal orienting reflex of different user to base station, and in the photodetector array imaging of base station receiver, the separation of user is carried out by the position of imaging, mutual interference problem when overcoming the multiple user and base station communication that exist in prior art between the up link of indoor visible light communication, the data of different user are well separated, reduce the power consumption of user simultaneously, the maneuverability of adding users therefore, the utility model is that the realization of the two-way communication of indoor visible light communication provides good solution, effective practicalization promoting indoor visible light communication.
Claims (5)
1. an indoor visible light communication up link, it is characterized in that, comprise base station transmitter (1), base station receiver and some users (3), some user transmitters (2) are provided with in the coverage that base station transmitter (1) sends light, base station receiver comprises receiver lens (4) and photodetector array (5), and the photodetector in photodetector array (5) is cellular distribution; Base station transmitter (1) and base station receiver are arranged on indoor ceiling and are arranged in same structure, and user transmitter (2) and user (3) are placed in same structure.
2. a kind of indoor visible light communication up link according to claim 1, is characterized in that, described base station transmitter (1) is made up of white light LEDs and drive circuit.
3. a kind of indoor visible light communication up link according to claim 1, is characterized in that, described user transmitter (2) is made up of modulation Reflex Reflector and modulation circuit.
4. a kind of indoor visible light communication up link according to claim 1, is characterized in that, described receiver lens (4) selects BK7 glass material.
5. a kind of indoor visible light communication up link according to claim 1, is characterized in that, described photodetector array (5), is made up of multiple photodetector and amplifying circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420678907.9U CN204190771U (en) | 2014-11-13 | 2014-11-13 | A kind of indoor visible light communication up link |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420678907.9U CN204190771U (en) | 2014-11-13 | 2014-11-13 | A kind of indoor visible light communication up link |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204190771U true CN204190771U (en) | 2015-03-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420678907.9U Expired - Fee Related CN204190771U (en) | 2014-11-13 | 2014-11-13 | A kind of indoor visible light communication up link |
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| CN (1) | CN204190771U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113285752A (en) * | 2021-03-24 | 2021-08-20 | 西安理工大学 | Communication method of single RGB-LED miniaturized full-duplex multi-user VLC |
-
2014
- 2014-11-13 CN CN201420678907.9U patent/CN204190771U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113285752A (en) * | 2021-03-24 | 2021-08-20 | 西安理工大学 | Communication method of single RGB-LED miniaturized full-duplex multi-user VLC |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150304 Termination date: 20171113 |