CN105610510B - Visible ray multiselect 4+1 roads mixed light MIMO transceiver communication devices - Google Patents
Visible ray multiselect 4+1 roads mixed light MIMO transceiver communication devices Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/40—Transceivers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
- H04B10/114—Indoor or close-range type systems
- H04B10/116—Visible light communication
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Abstract
The invention discloses a kind of visible ray multiselect 4+1 roads mixed light MIMO transceiver communication devices.The device includes transmitting terminal and receiving terminal.Transmitting terminal includes mission controller, encoder, frequency-selector, driver, light transmission antenna group；Receiving terminal includes：Receive controller, decoder, frequency divider, decision device, light receiver aerial group.Apparatus of the present invention are in n antenna, 5 tunnel therein is selected to be used as with communication line, utilize above-mentioned functional module, with reference to frequency-selecting sequence, encoding and decoding table in n antenna, frequent switching communication line and encoded signal, a kind of visible ray multiselect 4+1 roads mixed light MIMO transceiver communication devices are provided, improve the security performance of communication to a certain extent.
Description
Technical field
The invention belongs to technical field of photo communication, more particularly to a kind of visible ray multiselect 4+1 roads mixed light MIMO communications are received
Transmitting apparatus.
Background technology
Visible light communication is that the high speed light and shade being invisible to the naked eye sent using fluorescent lamp or light emitting diode etc. flashes letter
Number information is transmitted, the wire device of high-speed Internet is connected on lighting device, insertion attaching plug can be used.
MIMO technique (Multiple-Input Multiple-Output, MIMO) refers in transmitting terminal and connect
Receiving end uses multiple transmitting antennas and reception antenna respectively, signal is transmitted and is connect by multiple antennas of transmitting terminal and receiving terminal
Receive, so as to improve communication quality.It can make full use of space resources, and MIMO is realized by multiple antennas, not increase frequency
In the case of spectrum resource and antenna transmission power, system channel capacity can be increased exponentially, shows obvious advantage.Together
When, the security of communication can also be improved to a certain extent.
Private communication channel is for overt channel, and overt channel is used to transmit disclosed information, and private communication channel
Then by the way of special, under the shielding of overt channel, for transmitting secret information.The emphasis of private communication channel is to communicating this
Body is hidden.
In a digital communication system or a computer system, data are typically all to go out by least unit of byte
It is existing, therefore in data transfer, communication, receive and dispatch 4 bits of nybble every time, brought not to data handling procedure
It is few convenient.
The present invention has used for reference the MIMO technology of twireless radio-frequency communication, make use of the technical characterstic of visible light communication, it is proposed that
A kind of visible ray multiselect 4+1 roads mixed light MIMO transceiver communication devices.
The content of the invention
It is an object of the invention to provide a kind of visible ray multiselect 4+1 roads mixed light MIMO transceiver communication devices.
A kind of visible ray multiselect 4+1 roads mixed light MIMO transceiver communication devices, the device include transmitting terminal and receiving terminal, hair
Penetrate end include mission controller, encoder, launch clock, frequency-selector, driver and light transmission antenna group, light transmission antenna group contain
There is n light transmitting antenna, each light transmitting antenna includes transmitting filter and LED；Receiving terminal includes receiving controller, decoding
Device, receive clock, frequency divider, decision device and light receiver aerial group；Light receiver aerial group contains n light receiver aerial, each
Light receiver aerial is all comprising reception filter and photelectric receiver；Wherein, n is the natural number more than or equal to 5.
Mission controller electrically connects with encoder, frequency-selector and transmitting clock respectively；Light transmission antenna group respectively with frequency-selecting
Device and driver electrical connection；Driver electrically connects with transmitting clock.
Controller is received to electrically connect with decoder, frequency divider and reception clock respectively；Light receiver aerial group respectively with frequency dividing
Device, decision device electrical connection；Decision device electrically connects with receiving clock.
Transmitting filter and reception filter all use band logical filter.Band logical filter can only by the light in some wave-length coverage,
Band logical filter is used to filter out the light beyond this wave-length coverage.The optical signal passband of light transmitting antenna and light receiver aerial, takes
Certainly in the free transmission range of used band logical filter, i.e., depending on optical wavelength range that band logical filter can pass through.
Light transmission antenna group meets condition：The optical signal passband of 1st light transmitting antenna includes visible-range, the n-th-m
Individual, n-th of smooth transmitting antenna optical signal passband is all the subset of the 1st, and the n-th-m, n-th of each smooth transmitting antenna
Optical signal passband does not occur simultaneously.M is the natural number less than n and more than 0, and n-m is not equal to 1.
Mission controller, for obtaining data from external equipment, and by the data of acquisition according to 4 binary systems, one group of progress
Packet, then by the data output of packet to encoder；Frequency-selecting instruction is sent to frequency-selector, used by selecting current data transmission
Light transmitting antenna；Driving clock instruction is sent to transmitting clock, determines that transmitting terminal sends the speed of optical signal.
Frequency-selecting instructs, and for indicating frequency-selector, selects current data to send the light transmitting antenna that should be used.
Clock instruction is driven, for indicating to launch clock, when driving light transmitting antenna launches the driving that optical signal should use
The clock cycle.
Launch clock, for according to driving clock instruction, determining that transmitting terminal sends the speed of optical signal；Receive emission control
The driving clock instruction of device, and the clock signal for driving light transmitting antenna transmitting optical signal is provided to driver；Clock signal is
The square-wave signal that one section of dutycycle is 50%, the frequency of square wave determine according to the driving clock instruction of mission controller.
Encoder, 4 bits that one is inputted by mission controller, and it is encoded into 4 binary systems of one group 5
Number, then export this 54 bits.
Frequency-selector, for being instructed according to frequency-selecting, there is provided frequency-selecting sequence, and according to frequency-selecting sequence, in n light transmitting antenna
The 1st light transmitting antenna is selected as any 4 light transmitting antennas in the 1st road communication line and remaining n-1 light transmitting antenna
As the 2nd tunnel of communication, the 3rd tunnel, the 4th tunnel, the 5th road communication line.
Driver, selected for ' 1 ' and ' 0 ' signal of 54 bits exported according to encoder, and frequency-selector
The 5 road communication lines selected, the light on 5 road communication lines for driving frequency-selector to select respectively with this 54 bits launch day
Line, " 1 " and " 0 " are represented respectively with the two states that LED luminance is different.
Driver, one group of 54 bit that encoder is exported, it is respectively used to 5 tunnels that driving is selected by frequency-selector
Light transmitting antenna；When driving light transmitting antenna with each 4 bits inputted by encoder, provided according to transmitting clock
Clock signal, by this 4 bit according to order from left to right, each clock cycle exports one, uses successively
In driving LED.
Driver, driving LED represents " 1 " and " 0 " respectively with the different two states of brightness, while also to ensure to drive
The luminous intensity for the optical signal that LED is sent also meets：Believe for 5 road communication lines in the light that 5 transmitting antennas of transmitting terminal are sent
Number luminous intensity of " 1 " when reaching receiving terminal is consistent, and luminous intensity of the optical signal " 0 " sent when reaching receiving terminal is also protected
Hold consistent.
Light transmitting antenna, under driver control, being changed with the different two states of LED luminance, producing optical signal,
And after transmitting filter filtering, sent with the optical signal of some wave-length coverage.
Light receiver aerial, for receiving the optical signal sent from transmitting terminal.
Light receiver aerial group meets condition：The optical signal passband of each light receiver aerial is different.1st light receiver aerial
Optical signal passband include visible-range, the n-th-m, the optical signal passband of n-th of light receiver aerial be all the son of the 1st
Collection, and the n-th-m is individual, the optical signal passband of n-th of each light receiver aerial does not occur simultaneously.Meanwhile the light of the 1st light receiver aerial
Signal passband, it is the subset of the 1st transmitting filter optical signal passband again, the optical signal passband of the n-th-m light receiver aerials, is again
The subset of n-th-m transmitting filter signal passbands, the optical signal passband of n-th of light receiver aerial, is n-th of transmitting filter light again
The subset of signal passband.
Frequency divider, frequency-selecting sequence is provided for being instructed according to frequency dividing, and according to frequency-selecting sequence, in n light receiver aerial
The 1st light receiver aerial is selected as any 4 light receiver aerials in the 1st road communication line and remaining n-1 light receiver aerial
As the 2nd tunnel of communication, the 3rd tunnel, the 4th tunnel, the 5th road communication line.So that 5 light receiver aerials that receiving terminal is selected are covered
Optical signal passband can be corresponding with the optical signal passband of 5 light transmitting antennas respectively.The light of 1st road communication line of receiving terminal connects
The 1st tunnel of transmitting terminal, the 2nd tunnel, the 3rd tunnel, the 4th tunnel, 5 light transmitting antennas hair of the 5th road communication line can be received by receiving antenna
The optical signal sent.The 1st tunnel that can receive transmitting terminal of the light receiver aerial of 2nd road communication line of receiving terminal, the communication of the 2nd tunnel
The optical signal that 2 light transmitting antennas of circuit are sent.The light receiver aerial of 3rd road communication line of receiving terminal can receive hair
Penetrate the 1st tunnel at end, the optical signal that 2 light transmitting antennas of the 3rd road communication line are sent.4th road communication line of receiving terminal
The optical signal that the 1st tunnel that can receive transmitting terminal of light receiver aerial, 2 light transmitting antennas of the 4th road communication line are sent.Connect
The 1st tunnel that can receive transmitting terminal of the light receiver aerial of 5th road communication line of receiving end, 2 light hair of the 5th road communication line
Penetrate the optical signal of antenna transmission.
Photelectric receiver, for receiving the optical signal after received filter filters, and it is converted into analog electrical signal output.
Clock is received, for according to judgement clock instruction, providing to enter the electric signal of photelectric receiver output to decision device
The judgement clock signal of row sampling judgement.Before transmitting terminal and receiving terminal synchronization, providing reception clock for decision device can reach
Most fast clock；After synchronously completing, according to the clock instruction for receiving controller, judgement clock is provided for decision device.
Decision device, for receiving the analog electrical signal of photelectric receiver output, and data signal output is converted to, for every
Individual photelectric receiver, the data signal of a judgement in each reception clock cycle, can be exported.
Decoder, the data signal for decision device to be exported are reduced into 4 digits of one group 5, and by 4 of 5
Number decoder exports into 4 bits.
Controller is received, for the output of decoder to be reduced into former data, and the former data for receiving and restoring are defeated
Go out to external equipment；Judgement clock instruction is provided to clock is received, is instructed to frequency divider output frequency division.
Clock instruction is adjudicated, for indicating to receive clock, determines what decision device sampling judgement output digit signals should use
Adjudicate clock.
Frequency dividing instruction, for the frequency-selecting sequence for determining to use for frequency divider.
Transmitting terminal and receiving terminal, using same frequency-selecting sequence.Transmitting terminal and receiving terminal often send x in communication
After group data, just change a frequency-selecting sequence, according to frequency-selecting sequence, change the 2nd tunnel, the 3rd tunnel, the 4th tunnel, the 5th road communication line
Selected light transmitting antenna and light receiver aerial.X is the natural number more than 0.
The encoding and decoding rule of encoder and decoder, refers to table 1.The row number that first behavior of form respectively arranges, first is classified as
The line number of each row.
The encoding and decoding of table 1 rule
Bin in table 1 is classified as 16 4 binary systems that encoder is input to after mission controller is changed, and Hex is classified as Bin
16 corresponding system numbers of row.Each 4 bit that encoder arranges Bin is encoded into S1 row, the S2 of corresponding line in table 1
Row, S3 row, S4 row, 54 binary systems of S5 row, S1 is arranged, 5 numerical value arranged of S2 row, S3 row, S4 row, S5 row are used separately as driving
Dynamic device drives the signal output of 5 road communication lines.The 1st light transmitting that the numerical value of S1 row is used to drive on the 1st road communication line
The LED of antenna；S2 row, S3 row, S4 row, the numerical value of S5 row, then it is respectively used to driving and is sent out by the remaining n-1 light of frequency-selector selection
The 2nd tunnel penetrated in antenna, the 3rd tunnel, the 4th tunnel, the LED of 4 light transmitting antennas on the 5th road communication line.
R1 row, R2 row, R3 row, R4 row, 5 row of R5 row are respectively on the 5 road communication lines of frequency divider selection of receiving terminal
5 light receiver aerials receive the optical signal that transmitting terminal is sent and the output after decision device is handled, R1 is classified as the 1st tunnel and led to
Believe the decision device output of circuit, R2 is classified as the decision device output of the 2nd road communication line, and R3 is classified as the judgement of the 3rd road communication line
Device exports, and R4 is classified as the decision device output of the 4th road communication line, and R5 is classified as the decision device output of the 5th road communication line.
Wherein, R1 be classified as the 1st tunnel, the 2nd tunnel, the 3rd tunnel, the 4th tunnel, the 5th tunnel 5 road communication lines the light that sends of transmitting terminal
Decision device output after the superposition of signal.R2 is classified as the optical signal that the transmitting terminal of the 2 road communication lines on the 1st road and the 2nd tunnel is sent
Superposition after decision device output.The optical signal that the transmitting terminal that R3 is classified as the 2 road communication lines on the 1st road and the 3rd tunnel is sent is folded
Decision device output after adding.After the superposition for the optical signal that the transmitting terminal that R4 is classified as the 2 road communication lines on the 1st road and the 4th tunnel is sent
Decision device output.Sentencing after the superposition for the optical signal that the transmitting terminal that R5 is classified as the 2 road communication lines on the 1st road and the 5th tunnel is sent
Certainly device exports.
The processing mode of encoder is：4 bits that one is inputted by mission controller, correspond to Bin in table 1
4 binary systems in row, and be encoded into such as 5 row one group 5 that corresponding S1 row, S2 row, S3 row, S4 row, S5 are arranged in table 1
4 bits, then export this 54 bits.
The processing mode of decoder is：The data signal that decision device exports is reduced into such as the R1 row in table 1, R2 row, R3
Row, R4 are arranged, 4 digits of 5 row one group 5 of R5 row, and this 54 digit is decoded into the correspondence of the Bin row as corresponding to table 1
Capable 4 bits, and export.
Synchronous firstly the need of transmitting-receiving is carried out when transmitting terminal and receiving terminal communicate, receiving and dispatching synchronous method is：
In transmitting terminal, synchronous averaging instruction is sent to encoder by mission controller, and communicated by the tunnel of encoder-driven the 1st
The LED of circuit sends one section of startup optical signal, and the 2nd tunnel, the 3rd tunnel, the 4th tunnel, the 5th tunnel do not send optical signal.Mission controller is simultaneously
Clock instruction is sent to transmitting clock, to determine that transmitting terminal sends the speed of optical signal.
Start in optical signal, include the initial frequency-selecting sequence of clock sync signal and use, for determining optical signal
The speed of transmission and transmitting terminal are by 5 initial light transmitting antennas of use.
In receiving terminal, because the optical signal passband of the 1st road communication line contains the light of remaining n-1 light receiver aerial
Passband, so n light receiver aerial can receive this startup optical signal.Receiving terminal is by the 1st road communication line, decision device
Identify startup optical signal with decoder processes, provided by reception clock for decision device receive that clock can reach it is most fast when
Clock, the clock as sampling judgement；And by start optical signal be output to reception controller, so that it is determined that the speed of optical signal and
Receiving terminal starts to receive the initial frequency-selecting sequence that should be used during the optical signal of actual data.
After transmitting terminal and receiving terminal synchronization, formal data transmit-receive is carried out, the principle and step of data transmit-receive are as follows：
The operation principle and step of transmitting terminal：
TX1, mission controller obtain data from external equipment, are grouped by 4 one group of binary systems, then the number by packet
According to being output to encoder, and frequency-selecting instruction is sent to frequency-selector, and driving clock instruction is sent to transmitting clock, it is determined that transmitting
End sends the speed of optical signal.
TX2, encoder are according to the coding rule of table 1, the Bin row of the table of comparisons 1,4 two exported from mission controller
System number is encoded into such as 5 row, one group of 54 binary system that corresponding S1 row, S2 row, S3 row, S4 row, S5 are arranged in table 1, and
Export this 54 bits.Meanwhile after frequency-selector receives frequency-selecting instruction, according to frequency-selecting sequence, in n light transmitting antenna
Middle the 1st light transmitting antenna of gating is that any 4 light in the 1st road communication line and remaining n-1 light transmitting antenna launches day
Line is as the 2nd tunnel of communication, the 3rd tunnel, the 4th tunnel, the 5th road communication line.
' 1 ' and ' 0 ' signal of 54 bits that TX3, driver export according to encoder, and frequency-selector select
5 road communication lines, light transmitting antenna on 5 road communication lines of driving frequency-selector selection with different two kinds of LED luminance
State represents " 1 " and " 0 " respectively.Wherein, S1 is arranged for driving the LED on the 1st road communication line, S2 row, S3 row, S4 row, S5
Row are then used to drive the 2nd tunnel, the 3rd tunnel, the 4th tunnel, the LED on the 5th tunnel successively.
The optical signal for the brightness change that TX4, the LED of 5 road communication lines are sent, is filtered by the transmitting on respective communication line
After mirror filtering, the optical signal turned into some passband is sent.
The operation principle and step of receiving terminal：
RX1, reception controller are received after starting optical signal, are given and are received clock offer judgement clock instruction, to frequency divider
Output frequency division instructs.Determine the speed of optical signal and receiving terminal start should to use when receiving the optical signal of actual data it is initial
Frequency-selecting sequence.
RX2, frequency divider instruct according to frequency dividing determines frequency-selecting sequence, and according to frequency-selecting sequence, is selected in n light receiver aerial
The 1st light receiver aerial is selected for any two light receiver aerial in the 1st road communication line and remaining n-1 light receiver aerial to make
For the 2nd tunnel of communication, the 3rd tunnel, the 4th tunnel, the 5th road communication line.
The reception filter of 5 light receiver aerials on RX3,5 road communication lines, was carried out to the optical signal received respectively
Filter, turn into the optical signal in some passband after filtering.
Photelectric receiver on RX4,5 road communication lines, the optical signal after receiving filter filtering is received, and be converted to
Analog electrical signal exports.
RX5, decision device will receive the analog electrical signal of photelectric receiver output, and be converted to data signal output.
RX6, decoder are reduced into such as the R1 in table 1 according to the encoding and decoding rule of table 1 to the data signal of decision device output
Row, R2 row, R3 row, R4 row, 5 row, one group of 54 digit of R5 row, and 54 digits are decoded into as the Bin in table 1 is arranged
One 4 bit of corresponding row, and export.
The output of decoder is reduced into former data, and is output to external equipment by RX7, reception controller.
The present invention is mainly by following aspects, ensureing the disguise of signal：1st, 5 road communication lines are from n antenna
Selection, the optical signal passband and order of n reception antenna of n transmitting antenna and receiving terminal of every a pair of transmitting terminals can be by
The both sides of communication arrange jointly；2nd, frequency-selecting sequence content maintains secrecy, and the frequency of frequency-selecting sequence transformation, order maintain secrecy, i.e.,：If know
The road content of frequency-selecting sequence, next group will also not fixed using which antenna；3rd, as can be seen from Table 1, the 1st tunnel
Optical signal passband, includes the 2nd tunnel, the 3rd tunnel, the 4th tunnel, the optical signal passband on the 5th tunnel all the time, and the light of the 1st road communication line connects
Receive the optical signal that receives of antenna be the 1st tunnel, the 2nd tunnel, the 3rd tunnel, the 4th tunnel, the 5th tunnel 5 light transmitting antennas optical signal
Superposition.The optical signal that the light receiver aerial of 2nd road communication line receives is optical signal and the 2nd tunnel of the 1st road light transmitting antenna
The superposition of the optical signal of light transmitting antenna, the optical signal that the light receiver aerial of the 3rd road communication line receives is the 1st road light transmitting
The optical signal of antenna is superimposed with the optical signal of the 3rd road light transmitting antenna, the like.From in table 1, R1 row, R2 are arranged, R3
Numerical value repetitive rate in row, R4 row, R5 row is high, therefore also increases the difficulty that signal is cracked.
Mixed light MIMO transceiver communication devices in visible ray multiselect 4+1 roads proposed by the present invention, using visible light communication technology,
Wide using visible light, the monochromatic light of different spectrum can be superimposed as the light of another color, and filter and photoelectricity two again
The characteristic of these optical receiving devices of pole pipe, allows signal of communication to be propagated in multiple color, has extremely strong disguise so that logical
The security of letter obtains the raising of certain procedures.
Brief description of the drawings
Fig. 1 is the apparatus structure block diagram of the embodiment of the present invention.
Marked in figure：1- mission controllers；2- encoders；3- frequency-selectors；4- light transmission antenna groups；5- drivers；6- points
Frequency device；7- light receiver aerial groups；8- decision devices；9- decoders；10- receives controller；11- launches clock；12- receives clock.
Embodiment
Embodiment：
A kind of visible ray multiselect 4+1 roads mixed light MIMO transceiver communication devices, the device include transmitting terminal and receiving terminal, hair
Penetrating end includes：Mission controller 1, encoder 2, transmitting clock 11, frequency-selector 3, driver 5, light transmission antenna group 4.Light is launched
Antenna sets 4 have 8 light transmitting antennas, and each light transmitting antenna has：Launch filter, LED；Receiving terminal includes：Receive control
Device 10, decoder 9, receive clock 12, frequency divider 6, decision device 8, light receiver aerial group 7；Light receiver aerial group 7 has 8 light to connect
Antenna is received, each light receiver aerial has：Receive filter, photelectric receiver.
Mission controller 1 electrically connects with encoder 2, frequency-selector 3, transmitting clock 11 respectively；Light transmission antenna group 4 respectively with
Frequency-selector 3, driver 5 electrically connect；Driver 5 electrically connects with transmitting clock 11.
Controller 10 is received to electrically connect with decoder 9, frequency divider 6, reception clock 12 respectively；Light receiver aerial group 7 is distinguished
Electrically connected with frequency divider 6, decision device 8；Decision device 8 electrically connects with receiving clock 12.
Transmitting filter and reception filter all use band logical filter.Band logical filter can only by the light in some wave-length coverage,
For filtering out the light beyond this wave-length coverage.The optical signal passband of light transmitting antenna and light receiver aerial, depending on being made
The free transmission range of band logical filter, i.e., depending on optical wavelength range that band logical filter can pass through.
The optical signal passband of 8 light transmitting antennas in light transmission antenna group 4 is respectively：The light of 1st light transmitting antenna
Signal passband is 350~800nm, and remaining the 2nd optical signal passband to the 8th light transmitting antenna is respectively：380~
440nm, 450~470nm, 480~500nm, 510~550nm, 560~590nm, 600~650nm, 660~750nm.
The optical signal passbands of 8 light receiver aerials in light receiver aerial group 7 is different, wherein, the 1st light receiver aerial
Optical signal passband is 350~800nm, and remaining the 2nd optical signal passband to the 8th light receiver aerial is respectively：380~
440nm, 450~470nm, 480~500nm, 510~550nm, 560~590nm, 600~650nm, 660~750nm.
Mission controller 1, for obtaining data from external equipment, and by the data of acquisition according to one group of 4 bit
It is grouped, then by the data output of packet to encoder 2；Meanwhile frequency-selecting instruction is sent to frequency-selector 3, select current data
Light transmitting antenna used by transmission.Driving clock instruction is sent to transmitting clock 11, determines that transmitting terminal sends the speed of optical signal
Degree.
Frequency-selecting instructs, and for indicating frequency-selector 3, selects current data to send the light transmitting antenna that should be used.
Clock instruction is driven, for indicating to launch clock 11, the driving that driving light transmitting antenna transmitting optical signal should use
Clock cycle.
Launch clock 11, driving light transmitting antenna hair is provided for receiving the instruction of mission controller 1, and to driver 5
The clock signal of optical signal is penetrated, clock signal is the square-wave signal that one section of dutycycle is 50%, and the frequency of square wave is 100KHz, side
The frequency of ripple determines according to the driving clock instruction of mission controller 1.
Encoder 2, by 4 bits inputted by mission controller 1 be encoded into as in table 1 S1 row,
S2 row, S3 row, S4 row, 54 bits of one group 5 arranged of S5 row, and export this 54 bits.
Frequency-selector 3, for providing frequency-selecting sequence, and according to frequency-selecting sequence, the 1st light is selected in 8 light transmitting antennas
Transmitting antenna is any 4 light transmitting antennas in the 1st road communication line and remaining 7 light transmitting antennas as the to communicate
2 tunnels, the 3rd tunnel, the 4th tunnel, the 5th road communication line.Table 2 is 1 group of frequency-selecting sequence, and 1 in sequence represents the light transmitting antenna chosen
Or light receiver aerial.
Frequency-selector 3 and frequency divider 6 use same frequency-selecting sequence, the frequency-selecting sequence of 8, from left to right, represent the 1st successively
Individual light transmitting antenna is to the 8th light transmitting antenna.The frequency-selecting sequence of 8 in frequency divider, from left to right, the 1st is represented successively
Light receiver aerial is to the 8th light receiver aerial.Transmitting terminal and receiving terminal after often sending 1 group of data, just change one in communication
Frequency-selecting sequence, according to frequency-selecting sequence, change the 2nd tunnel, the 3rd tunnel, the 4th tunnel, the light transmitting antenna selected by the 5th road communication line and
Light receiver aerial.
The frequency-selecting sequence table of table 2
| Sequence number | Frequency-selecting sequence |
| 1 | 11111000 |
| 2 | 10111100 |
| 3 | 10011110 |
| 4 | 10001111 |
| 5 | 11000111 |
| 6 | 11100011 |
Driver 5, for ' 1 ' and ' 0 ' signal of 54 bits exported according to encoder, and frequency-selector 3
5 road communication lines of selection, the LED on and off for the light transmitting antenna on 5 road communication lines that driving frequency-selector 3 selects, use LED
' 1 ', LED of bright expression, which goes out, represents ' 0 '.Wherein, the numerical value of the S1 row in table 1 is used to drive the 1st light on the 1st road communication line
The LED of transmitting antenna；S2 row, S3 row, S4 row, the numerical value of S5 row, then be respectively used to the residue 7 that driving is selected by frequency-selector 3
The 2nd tunnel, the 3rd tunnel, the 4th tunnel in light transmitting antenna, the LED of 4 light transmitting antennas on the 5th road communication line.Also simultaneously
Ensure that the luminous intensity for the optical signal that driving LED is sent also meets：Sent out for 5 transmitting antennas of the 5 road communication lines in transmitting terminal
Luminous intensity of the optical signal " 1 " gone out when reaching receiving terminal is consistent, light of the optical signal " 0 " sent when reaching receiving terminal
Intensity is also consistent.
Light transmitting antenna, under the control of driver 5, optical signal to be produced with LED bright, change of going out, and by transmitting
After filter filtering, sent with the optical signal of some wave-length coverage.
Light receiver aerial, for receiving the optical signal sent from transmitting terminal.
Photelectric receiver, for receiving the optical signal after received filter filters, and it is converted into electric signal output.
Clock 12 is received, the electric signal of photelectric receiver output is carried out sampling sentencing for judgement for providing to decision device 8
Certainly clock signal.Before transmitting terminal and receiving terminal synchronization, the most fast clock that receives clock and can reach is provided for decision device 8；
After synchronously completing, according to the clock instruction for receiving controller, judgement clock is provided for decision device.
Decoder 9, reduces 4 digits of one group 5 for the data signal that exports decision device 8, and by 4 of 5
Number decoder exports into 4 bits.
Frequency divider 6, for providing frequency-selecting sequence, and according to frequency-selecting sequence, the 1st light is selected in 8 light receiver aerials
Reception antenna is any 4 light receiver aerials in the 1st road communication line and remaining 7 light receiver aerials as the to communicate
2 tunnels, the 3rd tunnel, the 4th tunnel, the 5th road communication line.So that the optical signal passband that 5 light receiver aerials that receiving terminal is selected are covered
Corresponded with the optical signal passband of 5 light transmitting antennas, the light receiver aerial of the 1st road communication line of receiving terminal can receive
The optical signal that 1st tunnel of transmitting terminal, the 2nd tunnel, the 3rd tunnel, the 4th tunnel, 5 light transmitting antennas of the 5th road communication line are sent.Receive
The 1st tunnel that can receive transmitting terminal of the light receiver aerial of the 2nd road communication line at end, 2 light transmitting of the 2nd road communication line
The optical signal that antenna is sent.The 1st tunnel that can receive transmitting terminal of the light receiver aerial of 3rd road communication line of receiving terminal, the 3rd
The optical signal that 2 light transmitting antennas of road communication line are sent.The light receiver aerial of 4th road communication line of receiving terminal can connect
Receive the 1st tunnel of transmitting terminal, the optical signal that 2 light transmitting antennas of the 4th road communication line are sent.The 5th tunnel communication of receiving terminal
The light that the 1st tunnel that can receive transmitting terminal of the light receiver aerial of circuit, 2 light transmitting antennas of the 5th road communication line are sent
Signal.
Controller 10 is received, for the output of decoder 9 to be reduced into former data, judgement clock is provided to clock 12 is received
Instruction, the former data output for receiving and restoring to external equipment instructs to the output frequency division of frequency divider 6.
Clock instruction is adjudicated, determines the judgement clock of decision device sampling judgement output digit signals.
Frequency dividing instruction, the frequency-selecting sequence for determining to use for frequency divider.
Such as：Device will send one group of hexadecimal data 0x1b5f, and frequency-selecting sequence is since 11111000, the speed of transmitting-receiving
Spend for 100KHz.Setting often sends a grouped data and just changes a frequency-selecting sequence.
Therefore the clock sync signal that uses for：6 square waves of 100KHz dutycycle 50%.Starting optical signal is：When
Clock synchronizing signal and initial frequency-selecting sequence 11111000.
Transmitting terminal and receiving terminal carry out transmitting-receiving synchronously first when communicating, receiving and dispatching synchronous method is：
In transmitting terminal, synchronous averaging instruction is sent to encoder 2 by mission controller 1, encoder 2 drives the communication of the 1st tunnel
The LED of circuit sends one section of startup optical signal, and the 2nd tunnel, the 3rd tunnel, the 4th tunnel, the 5th tunnel do not send optical signal.Start in optical signal,
Include the initial frequency-selecting sequence of clock sync signal and use, the speed and transmitting terminal for the transmission that determines optical signal will adopt
5 initial light transmitting antennas.The transmitting tranmitting data register of clock 11 instruction is given, determines that the speed that transmitting terminal sends optical signal is
100KHz。
Starting optical signal is：The clock sync signal of 6 square waves of 100KHz dutycycle 50% and initial frequency-selecting sequence
Row 11111000.
In receiving terminal, the light that remaining 7 light receiver aerials are contained due to the optical signal passband of the 1st road communication line is led to
Band, so 8 light receiver aerials can receive this startup optical signal.Receiving terminal is by the 1st road communication line, decision device 8
Startup optical signal is identified with decoder 9, so that it is determined that the speed of optical signal is 100HKz, receiving terminal starts to receive actual data
Optical signal initial frequency-selecting sequence 11111000.
After transmitting terminal and receiving terminal carry out transmitting-receiving synchronization, the operation principle and step of transmitting terminal are as follows：
TX1, mission controller 1 obtain data 0xc5a2 from external equipment, and by 4 bit, one group is grouped.By
It is hexadecimal number in external data, can correspond to Bin with reference to Hex row in table 1 arranges to obtain S1, S2 row, S3 row, S4 row, S5 row
Corresponding line data, be output to encoder 2 one by one.And send frequency-selecting instruction to frequency-selector 3.
TX2, encoder 2 are encoded into 4 bits exported from mission controller 1 such as S1 row, the S2 in table 1
4 bits of 5 row one group 3 that row, S3 row, S4 row, S5 are arranged, and export this 54 bits.Meanwhile frequency-selector
After 3 receive frequency-selecting instruction, according to frequency-selecting sequence, it is that the 1st tunnel leads to that the 1st light transmitting antenna is gated in 8 light transmitting antennas
Believe 4 in circuit, and remaining 7 light transmitting antennas respectively as the 2nd tunnel, the 3rd tunnel, the 4th tunnel, the 5th road communication line.
TX3, driver 5 according to ' 1 ' of export one by one one group of 54 bit of encoder 2 in step TX2 and
' 0 ' signal, and the 5 road communication lines that frequency-selector 3 selects, the light on 5 road communication lines that driving frequency-selecting 3 device gates launch day
The LED on and off of line, with LED it is bright represent ' 1 ', LED go out expression ' 0 '.Wherein, S1 is arranged for driving on the 1st road communication line
LED on and off, S2 row, S3 row, S4 row, S5 row be then used to driving the 2nd tunnel, the 3rd tunnel, the 4th tunnel, the LED on the 5th tunnel bright successively and
Go out.
The optical signal for the light on and off change that TX4,5 road order wire paths of LEDs are sent, by the transmitting filter on respective communication line
After filtering, the optical signal turned into some passband is sent.
The operation principle and step of receiving terminal：
RX1, receive controller 10 receive start optical signal after, give receive clock 12 provide judgement clock instruction, to point
The output frequency division of frequency device 6 instructs.Determine that the speed of optical signal and receiving terminal start to use when receiving the optical signal of actual data
Initial frequency-selecting sequence.
RX2, frequency divider 6 instruct according to frequency dividing determines frequency-selecting sequence, and according to frequency-selecting sequence, in 8 light receiver aerials
The 1st light receiver aerial is selected as any two light receiver aerial in the 1st road communication line and remaining 7 light receiver aerials
As the 2nd tunnel of communication, the 3rd tunnel, the 4th tunnel, the 5th road communication line.
Reception filter on RX3,5 road communication lines filters to the optical signal received, turns into after filtering at some
Optical signal in passband.
Photelectric receiver on RX4,5 road communication lines, the optical signal after receiving filter filtering is received, and be converted to
Electric signal output.
RX5, decision device 8 will receive the analog electrical signal of photelectric receiver output, data signal output are converted to, such as table 1
In R1 row, R2 row, R3 row, R4 row, correspond to one group of 54 bit digital of row in R5 row.
The data signal that RX6, decoder 9 export to decision device 8 be reduced into such as in table 1 R1 row, R2 row, R3 row, R4 row,
4 digits of one group 5 of R5 row, and one 4 two that 54 digits are decoded into such as the corresponding rows arranged of the Bin in table 1 enter
Number processed, and be output to and receive controller 10.
The output of decoder 9 is reduced into former data 0xc5a2, and is output to external equipment by RX7, reception controller 10.
Claims (1)
- A kind of 1. visible ray multiselect 4+1 roads mixed light MIMO transceiver communication devices, it is characterised in that the device include transmitting terminal and Receiving terminal, transmitting terminal include mission controller, encoder, transmitting clock, frequency-selector, driver and light transmission antenna group, light hair Penetrate antenna sets and contain n light transmitting antenna, each light transmitting antenna includes transmitting filter and LED；Receiving terminal includes receiving Controller, decoder, receive clock, frequency divider, decision device and light receiver aerial group；Light receiver aerial group contains n light-receiving Antenna, each light receiver aerial, which includes, receives filter and photelectric receiver；Wherein, n is the nature more than or equal to 5 Number；Mission controller electrically connects with encoder, frequency-selector and transmitting clock respectively；Light transmission antenna group respectively with frequency-selector and Driver electrically connects；Driver electrically connects with transmitting clock；Controller is received to electrically connect with decoder, frequency divider and reception clock respectively；Light receiver aerial group respectively with frequency divider, sentence Certainly device electrically connects；Decision device electrically connects with receiving clock；Transmitting filter and reception filter all use band logical filter；Band logical filter can only pass through the light in some wave-length coverage, band logical Filter is used to filter out the light beyond this wave-length coverage；The optical signal passband of light transmitting antenna and light receiver aerial, is depended on The free transmission range of used band logical filter, i.e., depending on optical wavelength range that band logical filter can pass through；Light transmission antenna group meets condition：The optical signal passband of 1st light transmitting antenna includes visible-range, the n-th-m, the The optical signal passband of n light transmitting antenna is all the subset of the 1st, and the n-th-m is individual, the light of n-th of each smooth transmitting antenna letter Number passband does not occur simultaneously；M is the natural number less than n and more than 0, and n-m is not equal to 1；Mission controller, for obtaining data from external equipment, and by the data of acquisition according to 4 one group point of binary systems Group, then by the data output of packet to encoder；Frequency-selecting instruction is sent to frequency-selector, selects light used by current data transmission Transmitting antenna；Driving clock instruction is sent to transmitting clock, determines that transmitting terminal sends the speed of optical signal；Frequency-selecting instructs, and for indicating frequency-selector, selects current data to send the light transmitting antenna that should be used；Clock instruction is driven, for indicating to launch clock, the driving clock week that driving light transmitting antenna transmitting optical signal should use Phase；Launch clock, for according to driving clock instruction, determining that transmitting terminal sends the speed of optical signal；Receive mission controller Clock instruction is driven, and the clock signal of driving light transmitting antenna transmitting optical signal is provided to driver；Clock signal is one section Dutycycle is 50% square-wave signal, and the frequency of square wave determines according to the driving clock instruction of mission controller；Encoder, 4 bits that one is inputted by mission controller, and 4 bits of one group 5 are encoded into, This 54 bits are exported again；Frequency-selector, for being instructed according to frequency-selecting, there is provided frequency-selecting sequence, and according to frequency-selecting sequence, selected in n light transmitting antenna 1st light transmitting antenna is any 4 light transmitting antenna conduct in the 1st road communication line and remaining n-1 light transmitting antenna 2nd tunnel of communication, the 3rd tunnel, the 4th tunnel, the 5th road communication line；Driver, for " 1 " and " 0 " signal of 54 bits exported according to encoder, and the 5 of frequency-selector selection Road communication line, drive the light transmitting antenna on 5 road communication lines of frequency-selector selection respectively with this 54 bits, with The different two states of LED luminance represent " 1 " and " 0 " respectively；Driver, one group of 54 bit that encoder is exported, it is respectively used to 5 road light hairs of the driving by frequency-selector selection Penetrate antenna；With it is each by encoder input 4 bits drive light transmitting antenna when, according to transmitting clock provide when Clock signal, this 4 bit is exported one according to order from left to right, each clock cycle, is used to drive successively Dynamic LED；Driver, driving LED represent " 1 " and " 0 " respectively with the different two states of brightness, while also to ensure to drive LED hairs The luminous intensity of the optical signal gone out also meets：The optical signal " 1 " sent for 5 road communication lines in 5 transmitting antennas of transmitting terminal Luminous intensity when reaching receiving terminal is consistent, and luminous intensity of the optical signal " 0 " sent when reaching receiving terminal also keeps one Cause；Light transmitting antenna, under driver control, being changed with the different two states of LED luminance, producing optical signal, and pass through After crossing the filtering of transmitting filter, sent with the optical signal of some wave-length coverage；Light receiver aerial, for receiving the optical signal sent from transmitting terminal；Light receiver aerial group meets condition：The optical signal passband of each light receiver aerial is different；The light of 1st light receiver aerial Signal passband includes visible-range, the n-th-m, the optical signal passband of n-th of light receiver aerial be all the subset of the 1st, and N-th-m is individual, the optical signal passband of n-th of each light receiver aerial does not occur simultaneously；Meanwhile the optical signal of the 1st light receiver aerial Passband, is the subset of the 1st transmitting filter optical signal passband again, the optical signal passband of the n-th-m light receiver aerials, be n-th again- The subset of m transmitting filter signal passband, the optical signal passband of n-th of light receiver aerial, is n-th of transmitting filter optical signal again The subset of passband；Frequency divider, frequency-selecting sequence is provided for being instructed according to frequency dividing, and according to frequency-selecting sequence, selected in n light receiver aerial 1st light receiver aerial is any 4 light receiver aerial conducts in the 1st road communication line and remaining n-1 light receiver aerial 2nd tunnel of communication, the 3rd tunnel, the 4th tunnel, the 5th road communication line；So that the light that 5 light receiver aerials that receiving terminal is selected are covered Signal passband can be corresponding with the optical signal passband of 5 light transmitting antennas respectively；The light-receiving day of 1st road communication line of receiving terminal Line can receive the 1st tunnel of transmitting terminal, the 2nd tunnel, the 3rd tunnel, the 4th tunnel, 5 light transmitting antennas of the 5th road communication line are sent Optical signal；The light receiver aerial of 2nd road communication line of receiving terminal can receive the 1st tunnel of transmitting terminal, the 2nd road communication line The optical signal that 2 light transmitting antennas are sent；The light receiver aerial of 3rd road communication line of receiving terminal can receive the of transmitting terminal The optical signal that 1 tunnel, 2 light transmitting antennas of the 3rd road communication line are sent；The light-receiving day of 4th road communication line of receiving terminal The optical signal that line can receive the 1st tunnel of transmitting terminal, 2 light transmitting antennas of the 4th road communication line are sent；The 5th of receiving terminal The light receiver aerial of road communication line can receive the 1st tunnel of transmitting terminal, 2 light transmitting antennas of the 5th road communication line are sent Optical signal；Photelectric receiver, for receiving the optical signal after received filter filters, and it is converted into analog electrical signal output；Clock is received, for according to judgement clock instruction, being provided to decision device and the electric signal of photelectric receiver output being adopted The judgement clock signal of sample judgement；Before transmitting terminal and receiving terminal synchronization, providing reception clock for decision device can reach most Fast clock；After synchronously completing, according to the clock instruction for receiving controller, judgement clock is provided for decision device；Decision device, for receiving the analog electrical signal of photelectric receiver output, and data signal output is converted to, for each light Electric receiver, the data signal of a judgement in each reception clock cycle, can be exported；Decoder, the data signal for decision device to be exported are reduced into 4 digits of one group 5, and by the 4 digit solutions of 5 Code exports into 4 bits；Controller is received, for the output of decoder to be reduced into former data, and the former data output for receiving and restoring is arrived External equipment；Judgement clock instruction is provided to clock is received, is instructed to frequency divider output frequency division；Clock instruction is adjudicated, for indicating to receive clock, determines the judgement that decision device sampling judgement output digit signals should use Clock；Frequency dividing instruction, for the frequency-selecting sequence for determining to use for frequency divider；Transmitting terminal and receiving terminal, using same frequency-selecting sequence；Transmitting terminal and receiving terminal often send x group numbers in communication According to rear, just change a frequency-selecting sequence, according to frequency-selecting sequence, change the 2nd tunnel, the 3rd tunnel, the 4th tunnel, selected by the 5th road communication line Light transmitting antenna and light receiver aerial；X is the natural number more than 0；The encoding and decoding rule of encoder and decoder, refers to table 1；The row number that first behavior of form respectively arranges, first is classified as each row Line number；The encoding and decoding of table 1 ruleBin in table 1 is classified as 16 4 binary systems that encoder is input to after mission controller is changed, and Hex is classified as Bin row institute Corresponding 16 system number；Each 4 bit that encoder arranges Bin is encoded into the S1 row, S2 row, S3 of corresponding line in table 1 Row, S4 row, 54 binary systems of S5 row, S1 row, S2 are arranged, the numerical value of 5 row of S3 row, S4 row, S5 row is used separately as driver Drive the signal output of 5 road communication lines；The numerical value of S1 row is used to drive the 1st light transmitting antenna on the 1st road communication line LED；S2 row, S3 row, S4 row, the numerical value of S5 row, then it is respectively used to driving and is launched by the remaining n-1 light of frequency-selector selection The 2nd tunnel, the 3rd tunnel, the 4th tunnel in antenna, the LED of 4 light transmitting antennas on the 5th road communication line；R1 row, R2 row, R3 row, R4 row, 5 row of R5 row are respectively 5 on 5 road communication lines of the frequency divider selection of receiving terminal Light receiver aerial receives the optical signal that transmitting terminal is sent and the output after decision device is handled, R1 are classified as the 1st road order wire The decision device output on road, R2 are classified as the decision device output of the 2nd road communication line, and the decision device that R3 is classified as the 3rd road communication line is defeated Go out, R4 is classified as the decision device output of the 4th road communication line, and R5 is classified as the decision device output of the 5th road communication line；Wherein, R1 be classified as the 1st tunnel, the 2nd tunnel, the 3rd tunnel, the 4th tunnel, the 5th tunnel 5 road communication lines the optical signal that sends of transmitting terminal Superposition after decision device output；The optical signal that the transmitting terminal that R2 is classified as the 2 road communication lines on the 1st road and the 2nd tunnel is sent is folded Decision device output after adding；After the superposition for the optical signal that the transmitting terminal that R3 is classified as the 2 road communication lines on the 1st road and the 3rd tunnel is sent Decision device output；Sentencing after the superposition for the optical signal that the transmitting terminal that R4 is classified as the 2 road communication lines on the 1st road and the 4th tunnel is sent Certainly device exports；Decision device after the superposition for the optical signal that the transmitting terminal that R5 is classified as the 2 road communication lines on the 1st road and the 5th tunnel is sent Output；The processing mode of encoder is：4 bits that one is inputted by mission controller, correspond in table 1 in Bin row One 4 binary system, and it is encoded into 4 such as 5 row one group 5 that corresponding S1 row, S2 row, S3 row, S4 row, S5 are arranged in table 1 Binary number, then export this 54 bits；The processing mode of decoder is：The data signal that decision device exports is reduced into such as the R1 row in table 1, R2 row, R3 row, R4 4 digits of 5 row one group 5 that row, R5 are arranged, and this 54 digit is decoded into the one of the corresponding row that the Bin as corresponding to table 1 is arranged Individual 4 bit, and export.
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Application publication date: 20160525 Assignee: Guilin Xiuxiu Electronic Technology Co.,Ltd. Assignor: GUILIN University OF TECHNOLOGY Contract record no.: X2023980044261 Denomination of invention: Visible light multi selection 4+1 channel hybrid optical MIMO communication transceiver Granted publication date: 20180112 License type: Common License Record date: 20231025 |
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