CN207782812U - A kind of remote visible light communication receive-transmit system - Google Patents
A kind of remote visible light communication receive-transmit system Download PDFInfo
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- CN207782812U CN207782812U CN201820049587.9U CN201820049587U CN207782812U CN 207782812 U CN207782812 U CN 207782812U CN 201820049587 U CN201820049587 U CN 201820049587U CN 207782812 U CN207782812 U CN 207782812U
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Abstract
The utility model is related to technical field of visible light communication, specifically disclose a kind of remote visible light communication receive-transmit system, including emitter and reception device；Emitter includes seeing to take aim at mirror, LED light source and collimation camera lens；Sight takes aim at mirror and is set to emitter top；LED light source and collimation camera lens are set to inside emitter, and LED light source is set to the focal point of collimation camera lens；Reception device includes seeing to take aim at mirror, object lens and detection device；Sight takes aim at mirror and is set to reception device top；Object lens include primary mirror and secondary mirror, and secondary mirror is set to reception device close to one end of receiving port；The reception device other end is set in primary mirror, and primary mirror center is equipped with through-hole, through-hole is connect with detection device, and institute's detection device is equipped with imaging sensor, rotatable reflective mirror and detector.The utility model takes aim at mirror using sight and carries out coarse adjustment to visible light communication direction by being collimated to transmitting light, and imaging sensor is recycled to carry out fine tuning, to improve received signal to noise ratio, reduces Communication Jamming.
Description
Technical field
The utility model is related to technical field of visible light communication, specifically disclose a kind of remote visible light communication transmitting-receiving system
System.
Background technology
In visible light communication, the Signal-to-Noise that receiving terminal receives is the important parameter for influencing visible light communication quality
One of.For common remote visible light communication system, there is noise jammings for the information received, influence communication quality,
So that reception signal energy is maximized with minimum is always problem needed to be considered, these technological difficulties all affect
The application of remote visible light communication.
And for telecommunication receiving terminal, first, transmitting-receiving two-end is apart from larger, if receiving terminal receives direction not
Correctly, the optical signal of transmitting terminal transmission cannot will be received；Second is that long distance environment is complicated, bias light is unavoidably received
Signal；Third, remote atmospheric environment can cause the optical signal of transmission certain interference and make light signal energy random fluctuation.
Therefore, there is an urgent need for a kind of receive-transmit systems that can improve remote visible light communication quality.
Invention content
In order to overcome shortcoming and defect existing in the prior art, the purpose of this utility model is to provide a kind of remote
Visible light communication receive-transmit system.
To achieve the above object, the utility model uses following scheme.
A kind of remote visible light communication receive-transmit system, including emitter and reception device；The emitter includes
Mirror, LED light source and collimation camera lens are taken aim in sight；The sight takes aim at mirror and is set to emitter top；The LED light source and collimation camera lens are set
Inside emitter, LED light source is set to the focal point of collimation camera lens；The reception device includes seeing to take aim at mirror, object lens and detection
Device；The sight takes aim at mirror and is set to reception device top；The object lens include primary mirror and secondary mirror, and the secondary mirror is leaned on set on reception device
One end that proximity closes up；The reception device other end is set in the primary mirror, and primary mirror center is equipped with through-hole, the through-hole and detection
Device connects, and the detection device is equipped with imaging sensor, rotatable reflective mirror and detector.
Further, on the same line, and the two diameter is identical for the through-hole of the primary mirror and secondary mirror.
Preferably, the primary mirror is parabolic mirror.
Preferably, the secondary mirror is hyperboloidal mirror.
Preferably, the detection device is equipped with adjustable diaphragm.
Preferably, the detector is single point detector, including PMT, APD or SPAD.
Preferably, the collimation camera lens is reflector, refractor or TIR lens.
Preferably, the sight of the emitter take aim at mirror with collimation camera lens optical axis it is consistent, the sight of the reception device is taken aim at
Mirror is consistent with objective lens optical axis.
Preferably, the objective lens diameter is 200mm.
Preferably, described image sensor is CCD or CMOS.
The beneficial effects of the utility model：A kind of remote visible light communication receive-transmit system is provided, by transmitting light into
Row collimation, while taking aim at mirror using sight and coarse adjustment is carried out to visible light communication direction, recycle imaging sensor to carry out fine tuning, to carry
Received signal to noise ratio has been risen, Communication Jamming is reduced.
Description of the drawings
Fig. 1 is the flow diagram of the utility model embodiment.
Fig. 2 is the schematic diagram of the utility model embodiment emitter.
Fig. 3 is the schematic diagram of the utility model embodiment reception device.
Specific implementation mode
The utility model, which provides, solves the thinking that above-mentioned background technology is asked a question：First, can be by by LED light source
It is placed in the angle of divergence of the focal point compression light source emergent light of optical alignment camera lens, so as to realize the light energy in exit direction
It more concentrates, while taking aim at mirror adjustment transmitting terminal light source exit direction using sight makes receiving terminal be located at the field of view center that mirror is taken aim in sight, from
And receiving terminal is made to be in the exit direction of transmitting terminal；Second is that receiving light using existing large aperture telescope in receiving terminal, connecing
Sight is disposed to take aim at mirror on receiving apparatus, taking aim at mirror adjustment receiving terminal reception direction using this sight makes transmitting terminal be taken aim in the visual field of mirror positioned at sight
The heart to the reception direction of coarse adjustment reception device, while disposing imaging sensor, effect at the detection device of reception device
For the reception direction of accurate adjustment reception device.
For the ease of the understanding of those skilled in the art, the utility model is made with reference to embodiment and attached drawing further
Explanation, the content that embodiment refers to not is restriction to the utility model.
The present embodiment provides a kind of remote visible light communication receive-transmit systems, as shown in Figures 2 and 3, including emitter
And reception device；The emitter includes seeing to take aim at mirror 23, LED light source 21 and collimation camera lens 22；The sight takes aim at mirror 23 and is set to hair
Injection device top；The LED light source 21 and collimation camera lens 22 are set to inside emitter, and LED light source 21 is set to collimation camera lens 22
Focal point；The reception device includes seeing to take aim at mirror 31, object lens and detection device；The sight takes aim at mirror 31 and is set to reception device top
End；The object lens include primary mirror and secondary mirror, and the secondary mirror 32 is provided close to one end that reception device receives entrance, the primary mirror 33
It is interior to be set to the reception device other end, and 33 center of primary mirror is equipped with through-hole, the through-hole is connect with detection device, the detection device
Equipped with imaging sensor 34, rotatable reflective mirror 35 and detector 36.
In the present embodiment, as shown in Figure 1, visible light communication emitter will by the electric signal control flicker of LED light source 21
Electric signal is converted into optical signal, passes through and collimates the angle of divergence that camera lens 22 reduces 21 emergent light of LED light source so that emergent light is from transmitting
Device collimation projects, by reaching reception device after visible light channel.In receiving terminal, mirror 31 is taken aim at by the sight of reception device first
Coarse adjustment receives direction, so that the sight of reception device is taken aim at mirror 31 and is directed at emitter, adjusts revolving for reception device detection device at this time
Turn reflective mirror 35, so that the imaging sensor 34 that transmitting terminal emergent light is detected at device is received, fine tuning, which receives direction, makes transmitting terminal
The center of imaging sensor 34 is imaged in, then adjusts the rotatable reflective mirror 35 of detection device, keeps transmitting terminal emergent light detected
Detector 36 at device receives, and transmitted information can be obtained after signal processing system demodulates.
In the present embodiment, primary mirror 33 is parabolic mirror, and secondary mirror 32 is hyperboloidal mirror.The through-hole and pair of primary mirror 33
On the same line, and the two diameter is identical for mirror 32.Enter reception device when the incident light by collimation is parallel, into connecing
The incident light of receiving apparatus is projected to primary mirror 33（Parabolic mirror）, by primary mirror 33（Parabolic mirror）Reflection so that light
Line is in primary mirror 33（Parabolic mirror）Prefocusing, when light not yet converges completely, light is again by the secondary mirror 32 before focus
（Hyperboloidal mirror）Another secondary reflection so that light passes through primary mirror 33（Parabolic mirror）Refocusing after the through-hole at center,
It can receive stable optical signal in the detector 36 of focal point detection device, set according to Cassegrain telescope principle with this
The reception device of meter can greatly reduce the interference of visible light telecommunication.
In the present embodiment, detection device is equipped with adjustable diaphragm 37, and reception can be further adjusted by adjustable diaphragm 37
The range of device receiving and transmitting unit signal can remove the bias light other than emitter LED light source 21 in this way, so as to
Reduce the influence that background noise is brought.
In the present embodiment, collimation camera lens 22 is reflector, refractor or TIR lens.What reflector collimation utilized is to throw
LED light source 21 is placed in the focal point of parabolic mirror, 21 wide-angle emergent light of LED light source by parabolic mirror reflective mechanism
It is collimated through reflection after being radiated at parabolic mirror, while its low-angle emergent light cannot be irradiated to reflector and directly go out
It penetrates, to be collimated, therefore this method can only collimate the wide-angle emergent light of LED light source 21；Refractor
Collimation carries out refraction using lens on light source emergent light and reaches collimating effect, because refractor goes out the low-angle of LED light source 21
It penetrates anaclasis to be collimated, capacity usage ratio is big compared with reflector；TIR lens are the combination of reflector and refractor,
Capacity usage ratio highest in three, but production cost is also higher.It therefore, can be corresponding accurate according to actual use situation selection
Straight camera lens.
In the present embodiment, described image sensor 34 is CCD or CMOS；The detector 36 is single point detector, including
PMT, APD or SPAD.
In the present embodiment, the bores of object lens is more than the bore of detection device, by larger aperture of objective lens can receive compared with
Big light energy, while the scintillation effect that atmospheric turbulance is brought is eliminated, wherein aperture of objective lens is up to 200mm.
In the present embodiment, the sight of emitter takes aim at that mirror is consistent with collimation camera lens optical axis, and mirror and object lens are taken aim in the sight of reception device
Optical axis is consistent, is aligned with reception device convenient for emitter.
The above content is only the preferred embodiment of the utility model, for those of ordinary skill in the art, according to this reality
With novel thought, there will be changes in the specific implementation manner and application range, and the content of the present specification should not be construed as
Limitations of the present invention.
Term is explained：
LED：Light emitting diode
CCD：Charge coupling device
CMOS：Complementary metal oxide semiconductor
PMT：Photomultiplier
APD：Avalanche photodide
SPAD：Single-photon detector
TIR：Total internal reflection.
Claims (10)
1. a kind of remote visible light communication receive-transmit system, which is characterized in that including emitter and reception device；The transmitting
Device includes seeing to take aim at mirror, LED light source and collimation camera lens；The sight takes aim at mirror and is set to emitter top；The LED light source and standard
Straight camera lens is set to inside emitter, and LED light source is set to the focal point of collimation camera lens；The reception device includes seeing to take aim at mirror, object
Mirror and detection device；The sight takes aim at mirror and is set to reception device top；The object lens include primary mirror and secondary mirror, and the secondary mirror is set to and connects
Receiving apparatus is close to one end of receiving port；The reception device other end is set in the primary mirror, and primary mirror center is equipped with through-hole, it is described logical
Hole is connect with detection device, and the detection device is equipped with imaging sensor, rotatable reflective mirror and detector.
2. a kind of remote visible light communication receive-transmit system according to claim 1, which is characterized in that the primary mirror leads to
On the same line, and the two diameter is identical for hole and secondary mirror.
3. a kind of remote visible light communication receive-transmit system according to claim 1, which is characterized in that the primary mirror is to throw
Parabolic mirror.
4. a kind of remote visible light communication receive-transmit system according to claim 1, which is characterized in that the secondary mirror is double
Curved reflector.
5. a kind of remote visible light communication receive-transmit system according to claim 1, which is characterized in that the detection device
Equipped with adjustable diaphragm.
6. a kind of remote visible light communication receive-transmit system according to claim 1, which is characterized in that the detector is
Single point detector, including PMT, APD or SPAD.
7. a kind of remote visible light communication receive-transmit system according to claim 1, which is characterized in that the collimation camera lens
For reflector, refractor or TIR lens.
8. a kind of remote visible light communication receive-transmit system according to claim 1, which is characterized in that the emitter
Sight take aim at that mirror is consistent with collimation camera lens optical axis, and it is consistent with objective lens optical axis that mirror is taken aim in the sight of the reception device.
9. a kind of remote visible light communication receive-transmit system according to claim 1, which is characterized in that the aperture of objective lens
For 200mm.
10. a kind of remote visible light communication receive-transmit system according to claim 1, which is characterized in that described image passes
Sensor is CCD or CMOS.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820049587.9U CN207782812U (en) | 2018-01-12 | 2018-01-12 | A kind of remote visible light communication receive-transmit system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820049587.9U CN207782812U (en) | 2018-01-12 | 2018-01-12 | A kind of remote visible light communication receive-transmit system |
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| CN207782812U true CN207782812U (en) | 2018-08-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107979419A (en) * | 2018-01-12 | 2018-05-01 | 东莞信大融合创新研究院 | A kind of remote visible light communication receive-transmit system |
| CN112104420A (en) * | 2020-09-21 | 2020-12-18 | 北京基准线科技有限公司 | Remote visible light source information ferrying equipment |
-
2018
- 2018-01-12 CN CN201820049587.9U patent/CN207782812U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107979419A (en) * | 2018-01-12 | 2018-05-01 | 东莞信大融合创新研究院 | A kind of remote visible light communication receive-transmit system |
| CN112104420A (en) * | 2020-09-21 | 2020-12-18 | 北京基准线科技有限公司 | Remote visible light source information ferrying equipment |
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