CN106646369B - Inhibit indoor reflection light interference visible light indoor orientation method and system - Google Patents
Inhibit indoor reflection light interference visible light indoor orientation method and system Download PDFInfo
- Publication number
- CN106646369B CN106646369B CN201710051736.5A CN201710051736A CN106646369B CN 106646369 B CN106646369 B CN 106646369B CN 201710051736 A CN201710051736 A CN 201710051736A CN 106646369 B CN106646369 B CN 106646369B
- Authority
- CN
- China
- Prior art keywords
- light source
- light
- indoor
- plane
- receiver
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 38
- 230000002401 inhibitory effect Effects 0.000 claims abstract description 8
- 238000005286 illumination Methods 0.000 abstract description 19
- 238000013461 design Methods 0.000 abstract description 15
- 238000005457 optimization Methods 0.000 abstract description 12
- 230000004807 localization Effects 0.000 abstract description 7
- 230000002829 reductive effect Effects 0.000 abstract description 6
- 238000004891 communication Methods 0.000 abstract description 4
- 238000003384 imaging method Methods 0.000 description 28
- 238000012545 processing Methods 0.000 description 12
- 238000004364 calculation method Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 5
- 238000001914 filtration Methods 0.000 description 5
- 238000000691 measurement method Methods 0.000 description 5
- 230000005764 inhibitory process Effects 0.000 description 4
- 230000005622 photoelectricity Effects 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/16—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using electromagnetic waves other than radio waves
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Optical Communication System (AREA)
Abstract
The present invention relates to a kind of visible light localization method and systems, belong to technical field of visible light communication, and in particular to a kind of visible light indoor orientation method and system for inhibiting the interference of indoor reflection light.This method and system are started with from the principal element for generating reflected light, pass through LED illumination light source distribution and light source angle of departure optimization design and the design of receiver field of view of receiver orientation optimization, to inhibit the interference of reflected light, influence of the reflected light to positioning system can be greatly reduced, improve the positioning accuracy of positioning system.
Description
Technical field
The present invention relates to a kind of visible light localization method and systems, belong to technical field of visible light communication, and in particular to one
Kind inhibits the visible light indoor orientation method and system of indoor reflection light interference.
Background technique
LED based visible light communication location technology have in-door covering wide, energy conservation, safety, laying it is simple, at low cost,
Outstanding advantages of Electro Magnetic Compatibility is good.It realizes that the technology of indoor positioning mainly has at present and refers to that geometric measurement method, imaging method and line are known
Other method.Geometric measurement method mainly uses trilateration, triangulation and hyperbolic fix method, these three methods require to lead to
The side length or angle in measure geometry relationship are crossed, to calculate the location information of tested point, specific measurement method mainly has:
Time of arrival (toa) (TOA), signal arrival time difference (TDOA), signal strength (RSS), signal two-way time (RTOF), signal
Angle of arrival (AOA) etc..Geometric measurement method needs the distance to light source to receiver to measure, and imaging method above-mentioned also needs
It wants ranging and surveys the angle of transmitting light, environment is due to signal multipath reflection, luminous intensity fluctuation, the screening to signal light indoors
Gear can all influence the precision and stability of positioning, and wherein the influence of reflected light is maximum.It is surveyed especially with signal strength (RSS)
Positioning system away from method, the interference for being reflected light are more significant.
There is presently no the method that particularly effective elimination reflected light influences positioning system, the present invention passes through two methods
The interference for inhibiting reflected light, can be greatly reduced influence of the reflected light to positioning system, improve the positioning accuracy of positioning system.
Summary of the invention
The present invention mainly solves the problems, such as above-mentioned present in the prior art, provides a kind of inhibition indoor reflection light and does
The visible light indoor orientation method and system disturbed.This method and system are started with from the principal element for generating reflected light, are shone by LED
Mingguang City's source distribution and light source angle of departure optimization design and the design of receiver field of view of receiver orientation optimization, to inhibit the dry of reflected light
It disturbs, influence of the reflected light to positioning system can be greatly reduced, improve the positioning accuracy of positioning system.
Above-mentioned technical problem of the invention is mainly to be addressed by following technical proposals:
A kind of visible light indoor orientation method inhibiting the interference of indoor reflection light, comprising:
Light source is set in same rectangle plane by regional planning step, the just hexagonal honeycomb of use, adjacent light
Source spacing is a, and light source and the metope distance by wall are a/2, a length of m × a in one side of rectangle plane, and another side is a length ofM, n are natural number；
It is distributed planning step, utilizes formulaThe value of a and m, n are adjusted to adjust light
The distributed architecture in source is to meet different area coverages and/or requirement for signal coverage.
Wherein, the visible light indoor orientation method of above-mentioned a kind of inhibition indoor reflection light interference, the distribution planning step
Suddenly specifically:
When the area of rectangle plane is fixed, by adjusting adjacent light source spacing a, to adjust number of light sources to meet signal
Coverage strength requirement；
When number of light sources is fixed, by adjusting adjacent light source spacing a, to meet area coverage and signal strength requirement.
Wherein, the visible light indoor orientation method of above-mentioned a kind of inhibition indoor reflection light interference, the distribution planning step
Suddenly specifically: with the light emission angle of wall adjacent light source be ψ=2arctan (a/h), the light emission angle of remaining light source be ψ=
2arctan(1.5a/h)；In formula, h is plane where receiver at a distance from distribution of light sources plane.
Wherein, the visible light indoor orientation method of above-mentioned a kind of inhibition indoor reflection light interference, the distribution planning step
Suddenly specifically: receiver field of view of receiver angle is Ω=90 °.
A kind of visible light indoor locating system inhibiting the interference of indoor reflection light, comprising:
Light source group is arranged in the light source in same rectangle plane using just hexagonal honeycomb including several, wherein
Adjacent light source spacing is a, is a/2, a length of m × a in one side of rectangle plane by wall light source and metope distance, another side is a length ofM, n are natural number；
Receiver, place plane is parallel with light source group, and distance is h, for receiving the light source and being imaged；Receiver connects
Receipts field of view angle is Ω=90 °；
Wherein, in the light source group, the light emission angle with wall adjacent light source is ψ=2arctan (a/h), remaining light source
Light emission angle be ψ=2arctan (1.5a/h).
Therefore, the present invention has the advantage that the LED illumination light source honeycomb design of optimization, greatly improvement optical signal
Covering；The selection of flexible quantity of light source, size and light source spacing；The optimization design of light source light emission angle, greatly
Reduce the generation of metope reflection；The optimization of receiver field of view of receiver angle not only guarantees the quantity for receiving signal optical source, Er Qieyou
Conducive to the reception reduced to reflected light；It can be used for any kind of visible light indoor locating system.
Detailed description of the invention
Attached drawing 1 is LED light source honeycomb distributed architecture figure.
Attached drawing 2-a is the first LED light source honeycomb distribution map when number of light sources is reduced.
Attached drawing 2-b is second of LED light source honeycomb distribution map when number of light sources is reduced.
Attached drawing 3-a is the first LED light source distribution map when number of light sources is minimum.
Attached drawing 3-b is second of LED light source distribution map when number of light sources is minimum.
Attached drawing 4 is the light emission angle schematic diagram according to determined by the first row distribution of light sources situation of attached drawing 2-b.
Attached drawing 5 is the light emission angle schematic diagram according to determined by the first row distribution of light sources situation of attached drawing 2-b.
Attached drawing 6 is the light emission angle schematic diagram according to determined by the second line light source distribution situation of attached drawing 2-b.
Attached drawing 7 is the positioning system structure schematic diagram of specific embodiment.
Attached drawing 8 is positioning principle schematic diagram.
Attached drawing 9 is image sensing plane and Si length and unit pixel area relationship schematic diagram.
Attached drawing 10-a is transmitting terminal work flow diagram of the invention.
Attached drawing 10-b is receiving end work flow diagram of the invention.
Specific embodiment
Below with reference to the embodiments and with reference to the accompanying drawing the technical solutions of the present invention will be further described.
Embodiment:
One, light source is planned
Geometric measurement method and imaging method need ranging and survey transmitting light angle, indoors environment due to signal multipath it is anti-
It penetrates, luminous intensity fluctuation, the precision and stability of positioning can all be influenced on blocking for signal light, and wherein the influence of reflected light is most
Greatly.Especially with the positioning system of signal strength (RSS) telemetry, the interference for being reflected light is more significant.
The present invention starts with from the principal element for generating reflected light, inhibits the interference of reflected light: LED illumination using two methods
Distribution of light sources and light source angle of departure optimization design；The design of receiver field of view of receiver orientation optimization.
Indoor LED illumination light source is distributed in ceiling plane in the way of attached drawing 1, and distribution of light sources is positive hexagonal honeycomb
Structure, the spacing of adjacent LED light source are a, are a/2 by two rows of wall and two column light sources and metope distance, careat isCareat general expression can be written asM, n, which appoints, takes natural number,
More than or equal to 2, being uniformly distributed for intensity of illumination can be guaranteed to greatest extent by being computed this distribution of light sources design.LED illumination light source
Distribution design can be suitble to any careat and flexibly increase and decrease number of light sources, and method is to adjust the size of a and m, n.
As shown in attached drawing 2-a, attached drawing 2-b, when a is constant, and careat is expressed asWhen, light source
Distribution situation, attached drawing 2-a and attached drawing 2-b are honeycomb, the difference is that attached drawing 2-b can be preferably to four corners
Carry out signal covering.
Attached drawing 3-a, attached drawing 3-b careat are expressed asWhen, the distribution situation of light source is also honeycomb
Partial structurtes.Since light source is few, distribution of light sources is only single cellular part, therefore signal covering is uneven, special corner letter
Number of poor quality, position error is big.Improved method is by area formulaBy reducing a, increase
Light source number can effectively improve corner and the positioning accuracy along wall attachment.Obvious a is smaller, and unit area lighting source number is more, letter
Number covering is more uniform, but disadvantage is that the signal that receiver receives is more, and the interference for generating adjacent signals is more serious, therefore
Need the size of appropriate selection a.
For the interference for inhibiting reflected light, it is necessary to select the size of appropriate LED light source light emission angle, light emission angle is bigger
The signal light coverage area of light source transmitting is bigger, but corresponding metope reflection is also bigger, and light emission angle is small, can reduce metope reflection
Intensity, but signal cover reduce, the light source number for causing receiver to receive is less, receive light source number be 3 or more can
Three-dimensional localization is carried out, two-dimensional localization can be carried out by receiving light source number as 2, and positioning will not be can be carried out by receiving light source number less than 2.Therefore
The size of LED light source light emission angle is also required to optimal setting.
Attached drawing 4 is the calculation method that the light emission angle of optimization is determined according to the distribution of light sources situation of attached drawing 2-b, 4 institute of attached drawing
The LED light source distribution shown is the first row distribution of light sources of attached drawing 2-b.The first row light source light emission angle determined by the present invention is ψ
=2-arctan (a/h), wherein h is plane where receiver at a distance from distribution of light sources plane.
Attached LED light source distribution shown in fig. 5 is the first row distribution of light sources of attached drawing 2-b.First row determined by the present invention
Light source light emission angle is ψ=2-arctan (a/h).
Attached LED light source distribution shown in fig. 6 is the second line light source distribution of attached drawing 2-b.Second row determined by the present invention
Light source light emission angle is ψ=2-arctan (1.5a/h).
For 2 distribution of light sources situation of attached drawing, present invention determine that light emission angle be respectively as follows: near two row of wall and two column light
Source is ψ=2-arctan (a/h), remaining is ψ=2-arctan (1.5a/h).
In the case of 2 distribution of light sources of attached drawing, with reference to the accompanying drawings 4, shown in attached drawing 5, attached drawing 6, receiver determined by the present invention is connect
Receipts field of view angle is Ω=90 °.
For attached drawing 2-a and 2-b, when the spacing of adjacent LED light source is a=1.5 meters, corresponding careat is 27.9 squares
Rice, at a=2 meter, corresponding careat is 47.5 square metres.LED light source number is 12 or 13.If you need to increase light source number, reference is attached
Fig. 1 only need to increase honeycomb number, i.e. increase m, n, that is, identical careat can have the distribution of different LED light source numbers
Design.Identical LED light source number, can also correspond to different careats, need to only adjust the size of the spacing a of adjacent LED light source i.e.
It can.So the present invention is each provided with the specific implementation of flexible LED light source distribution design according to different requirements and concrete condition
Method.
From attached drawing 4,5,6 as it can be seen that the optimization design of distribution of light sources of the invention, light emission angle and field of view of receiver angle, makes
Be greater than the position of a/2 away from four metopes, metope reflected light is seldom, interference very little of the positioning system by reflected light, therefore positioning accuracy
Height can reach within centimetre scale.It cannot be ignored along wall displacement by the interference of reflected light away from four metopes less than a/2, be positioned
Precision is worse than centimetre scale.
Attached drawing 7 is a specific application example of the invention.System is made of transmitting terminal and receiving end:
Transmitting terminal: it is made of transmission signal modulation module, LED light source.LED illumination light source is arranged in indoor suspended ceiling plane,
At least 3 LED illumination light sources, as more than three light source can it is preferable to determine 3 positioned light sources, each LED light sources by light source
Distribute unique beacon, and have with its corresponding to coordinate.
Receiving end: by lens group, light filtering film, imaging sensor or photodiode array, signal processing and positioning
Computing module composition, wherein lens group and an imaging sensor or photodiode array constitute imaging system.Receiving end tool
The functions such as standby light source imaging, filtering, demodulation transmitting terminal broadcast singal and the calculating of point to be determined position coordinates.
For lens group for imaging to light source, light filters film wiping out background light and other stray lights, imaging sensor or
Photodiode array receives LED light signal, completes the function of photoelectric conversion.Signal processing and location Calculation module complete signal
Amplification, filtering, signal demodulating and decoding, the determination of LED imaging point position, siThe functions such as value calculates and anchor point coordinate calculates.In addition,
If interior has more than 3 LED illumination light sources, signal processing and location Calculation module also have the preferred function of light source, with choosing
3 the best light sources are selected as positioning light source.Receiving end lens group plane and imaging sensor or photodiode array plane
Be parallel to each other the method that static parallel can be used, that is, passes through two pole of fixed reception end lens group plane and imaging sensor or photoelectricity
Pipe array plane is parallel to each other, then finely tunes receiver and be integrally allowed to the receiving plane side parallel with LED illumination light source distribution plane
Method.Because positioning signal processing is different from image procossing, not only need to read imaging point position, it is also necessary to carry out received signal
The processing such as demodulation, decoding, therefore signal processing and location Calculation module is needed to have these functions.Ccd image sensor is such as used,
Due to being not necessarily to image color, electrical signal intensity after the photoelectric conversion to improve incident light can remove the colour filter of CCD, in addition, fixed
Position signal processing is with the difference of CCD, and same as used cmos image sensor, positioning signal processing is also the same as cmos image signal
Processing is different.Photodiode array can be used to replace the function of imaging sensor for the present embodiment, can more be directed to actual positioning
Using.
In this application embodiment, as shown in attached drawing 1 to attached drawing 3-b, for given careat size, according to formulaQuantity of light source and light source spacing can flexibly be selected.
In this application embodiment, the optimization design of light source light emission angle is ψ=2- close to two row of wall and two column light sources
Arctan (a/h), remaining is ψ=2-arctan (1.5a/h).In this application embodiment, identified receiver receives view
Rink corner degree is Ω=90 °.
Receiver field of view of receiver angle is Ω=90 ° in the present embodiment, but in alternative solution, receiver field of view of receiver angle
Ω can flexibly be set according to specific distribution of light sources density case.It is enough guaranteeing to receive in the case that distribution of light sources is given
Light source said conditions under, smaller field of view of receiver angle can preferably inhibit the interference of reflected light.The reception view specifically optimized
Rink corner angle value determines according to the method for the present invention.
In this application embodiment, careat is about 36 square metres, and receiver is away from h=3 meters of LED light source plane, receiver
Field of view of receiver angle is Ω=90 °, and the spacing of adjacent LED light source is a=1 meters optional, close to two row of wall and two column light source light emittings
Angle is (1/3)=36.9 ° ψ=2-arctan, remaining light source light emission angle is (1/2)=53.1 ° ψ=2-arctan.Choosing
A=2 meters are selected, same 36 square metres of careat, light source number will reduce more than half.
The imaging sensor image of the invention is not limited to imaging sensor in general sense, it is possible to use photoelectricity
Array that diode array and other similar electrooptical devices are constituted replaces imaging sensor.Without to finished product image sensing
Device or photodiode array carry out the special design for positioning function, and the signal that need to only obtain sensor passes through at signal
Reason and location Calculation module are handled to realize positioning function.
Two pole of LED illumination light source distribution plane, receiving end lens group plane and imaging sensor or photoelectricity of the present embodiment
It is complete can also to adjust parallel method using dynamic other than the method for static parallel for the scheme that pipe array plane is parallel to each other
At.
Two, localization method
It is as follows to the location algorithm principles and methods of the present embodiment below.
As shown in Fig. 8, it is imaged using any 3 non-colinear LED illumination lamps and its in imaging system sensor plane
The geometrical relationship that the line of point is constituted, in conjunction with imaging sensor or photodiode array signal receiving plane area and pixel
Density size calculates the coordinate value for determining point to be determined L.
As shown in Fig. 8, the coordinate of 3 non-colinear LED illumination lamps is respectively L1(x1, y1,z1)、L2(x2, y2,z2)、L3
(x3, y3,z3), they are respectively D1, D2, D3 to the distance of anchor point L, and L is point to be determined, that is, lens centre, passes through the lens of L
Plane is parallel with sensor plane, and the vertical range of lens plane center L to sensing plane center N is focal length of lens f, M LED
Headlamp L1By lens in the imaging of imaging sensor or photodiode array plane, H is LED illumination lamp L1It is flat to lens
The vertical range in face, A point is on lens plane.Obvious right angled triangle Δ L1AL is similar triangle to right angled triangle Δ LNM
Shape, so D1=H (f2+s1 2)1/2/f,s1For the distance of N to M, can similarly obtain other LED illumination lamps to anchor point L distance phase
With expression formula Di=H (f2+si 2)1/2/f.Three positioning LED light sources are being parallel to imaging sensor or photoelectricity under normal conditions
In diode array plane, therefore z1=z2=z3, then obtain three equations:
(x-xi)2+(y-yi)2=Di 2-H2, i=1,2,3
From three equations above can determine three unknown quantitys x, y, H, need to only measure each LED light source sensor screen at
Distance s of the picture point to center Ni, the position coordinates (x, y, z) of point to be determined can be solved, wherein z=zi-H。
siCalculation method: attached drawing 9 is imaging sensor or photodiode array plane and Si length and unit pixel
Area relationship schematic diagram, it is assumed that sensor plane area is w2, pixel T, then the area of unit pixel is w2/ T, N are passed in image
Sensor or the pixel coordinate of photodiode array plane are (x0′,y0'), the coordinate of M is (xm′,ym'), the direction x pixel number
The direction a, y pixel number b, therefore Si=[(a2+b2)w2/T]1/2。
Algorithm above is completed by the signal processing and location Calculation module of receiving end.
In addition, the light filtering film of receiving end is used to filter interference of the stray light to signal is received, it is reliable to improve system
Property.The common technical method of communication system can be used in the signal modulation module of transmitting terminal, as frequency division, wavelength-division, code point, the time-division or its
Its technology.Interior has more than 3 LED illumination light sources, and signal processing and location Calculation module also have the preferred function of light source, with
Select 3 the best light sources as positioning light source.Preferred light source foundation mainly have: image quality, snr of received signal, at
As non-colinear.
Transmitting terminal workflow is as shown in Figure 10-a: signal modulation module power-up initializing, backstage configuration LED light source shine
Intensity and each LED light source beacon of setting and coordinate, the original configured relevant parameter in such as backstage, when being not required to remodify, centainly
Automatically into next step, driving LED's Shi Yanhou shines, and broadcasts location related information, and state-detection discovery configures or sets up data
It is wrong, as coordinate reconfiguration or illumination light intensity not in normal range (NR), then return backstage reconfigure with setting relevant parameter, such as examine
Survey normally then recycle repeating transmission broadcast message, when detect in system setting working time except, such as evening 12 when after,
Then terminate illumination and location information broadcast.
Receiving end workflow is as shown in Figure 10-b: signal processing and the biography of location Calculation module initialization, imaging system
Sensor plane receives optical signal and is converted to electric signal by light-sensitive device, amplifies to every road reception electric signal, filter
Filtering, using with transmitting terminal corresponding technology signal is demodulated with decode, according to received signal quality compared with select three
A non-colinear imaging point is as the data source of location Calculation, the extraction of three imaging dot position informations and light source coordinates value, positioning ginseng
The calculating of number Si calculates determining point to be determined coordinate, positioning result output and flows to update, the aforementioned positioning of repetition of previous output
Journey obtains the coordinate information in original site or new definition point.
The present embodiment can realize three-dimensional localization, if height it is known that can only need 2 light sources that can complete the two dimension of planar point
Positioning, method is the same as three-dimensional localization principle of the invention.LED illumination light source distribution plane of the invention, receiving end lens group plane
The scheme being parallel to each other with imaging sensor or photodiode array plane can also use other than the method for static parallel
Dynamic adjusts parallel method.
Specific embodiment described herein is only an example for the spirit of the invention.The neck of technology belonging to the present invention
The technical staff in domain can make various modifications or additions to the described embodiments or replace by a similar method
In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.
Claims (3)
1. a kind of visible light indoor orientation method for inhibiting the interference of indoor reflection light characterized by comprising
Regional planning step, light source is set in same rectangle plane by the just hexagonal honeycomb of use, between adjacent light source
Away from for a, light source and the metope distance by wall are a/2, a length of m × a in one side of rectangle plane, and another side is a length ofM, n are natural number, are all larger than equal to 2；
It is distributed planning step, utilizes formulaThe value of a and m, n are adjusted to adjust light source
Distributed architecture is to meet different area coverages and/or requirement for signal coverage；
Light emission angle with wall adjacent light source is ψ=2arctan (a/h), and the light emission angle of remaining light source is ψ=2arctan
(1.5a/h)；In formula, h is plane where receiver at a distance from distribution of light sources plane；
Receiver field of view of receiver angle is Ω=90 °.
2. a kind of visible light indoor orientation method for inhibiting the interference of indoor reflection light according to claim 1, feature exist
In the distribution planning step specifically:
When the area of rectangle plane is fixed, by adjusting adjacent light source spacing a, to adjust number of light sources to meet signal covering
Intensity requirement；
When number of light sources is fixed, by adjusting adjacent light source spacing a, to meet area coverage and signal strength requirement.
3. a kind of visible light indoor locating system for inhibiting the interference of indoor reflection light characterized by comprising
Light source group is arranged in the light source in same rectangle plane using just hexagonal honeycomb including several, wherein adjacent
Light source spacing is a, is a/2, a length of m × a in one side of rectangle plane by wall light source and metope distance, another side is a length ofM, n are natural number；
Receiver, place plane is parallel with light source group, and distance is h, for receiving the light source and being imaged；Receiver receives view
Rink corner degree is Ω=90 °；
Wherein, in the light source group, the light emission angle with wall adjacent light source is ψ=2arctan (a/h), the light of remaining light source
The angle of departure is ψ=2arctan (1.5a/h).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710051736.5A CN106646369B (en) | 2017-01-20 | 2017-01-20 | Inhibit indoor reflection light interference visible light indoor orientation method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710051736.5A CN106646369B (en) | 2017-01-20 | 2017-01-20 | Inhibit indoor reflection light interference visible light indoor orientation method and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106646369A CN106646369A (en) | 2017-05-10 |
| CN106646369B true CN106646369B (en) | 2019-11-22 |
Family
ID=58842314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710051736.5A Expired - Fee Related CN106646369B (en) | 2017-01-20 | 2017-01-20 | Inhibit indoor reflection light interference visible light indoor orientation method and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106646369B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109348568B (en) * | 2018-09-25 | 2020-11-13 | 李沅洁 | Multipurpose landscape brightening LED lighting equipment and customization system and method thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104567853A (en) * | 2013-10-24 | 2015-04-29 | 张炯 | Position calibration device and method based on LED visible light source |
| CN103869284A (en) * | 2014-02-28 | 2014-06-18 | 北京邮电大学 | Visible light communication-based indoor positioning system and method |
| CN104270194A (en) * | 2014-09-16 | 2015-01-07 | 南京邮电大学 | Visible light indoor positioning method |
| CN104360313B (en) * | 2014-11-12 | 2017-02-15 | 武汉邮电科学研究院 | Multiple-LED based light source locating method |
| CN105162519A (en) * | 2015-09-29 | 2015-12-16 | 北京邮电大学 | Kalman filtering based positioning and handover method in indoor microcellular visible light communication network |
| CN105717488B (en) * | 2016-04-28 | 2018-11-23 | 百色学院 | A kind of preferably two light source indoor positioning method and system based on visible light communication |
-
2017
- 2017-01-20 CN CN201710051736.5A patent/CN106646369B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN106646369A (en) | 2017-05-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106886008A (en) | Indoor visible light localization method and system based on single image sensor | |
| US11428814B1 (en) | Optical ground tracking apparatus, systems, and methods for use with buried utility locators | |
| CN105717488B (en) | A kind of preferably two light source indoor positioning method and system based on visible light communication | |
| CN106483500B (en) | Visible light communication three-dimensional positioning method based on CDMA modulation | |
| US8542368B2 (en) | Position measuring apparatus and method | |
| CN104020445B (en) | Indoor laser alignment system based on frequency tag method | |
| Taylor et al. | Angular diversity approach to indoor positioning using visible light | |
| CN106610490A (en) | Optical positioning method, system and device based on LED and image sensor | |
| CN107063266A (en) | The method that indoor positioning is realized based on indoor LED lamp and smart mobile phone camera | |
| CN106970354B (en) | A kind of 3-D positioning method based on multiple light courcess and photosensor array | |
| US20140085642A1 (en) | Lighting apparatus for measuring the position of a mobile terminal, and position measuring system using same | |
| CN105738868A (en) | High-precision indoor positioning method based on two image sensors and visible light communication technology | |
| CN110503687A (en) | A kind of aerial photoelectric measurement platform object localization method | |
| CN110133592B (en) | Indoor two-point positioning method based on visible light communication | |
| CN106443586B (en) | Indoor positioning method and device | |
| CN108413966A (en) | Localization method based on a variety of sensing ranging technology indoor locating systems | |
| CN206541028U (en) | The single image sensor indoor visible light alignment system measured based on non-angled | |
| CN106375937A (en) | Indoor positioning control system based on sensing | |
| TW201721094A (en) | Transmitter array, receiver, and positioning system | |
| CN106646369B (en) | Inhibit indoor reflection light interference visible light indoor orientation method and system | |
| US6853445B2 (en) | Two-dimensional angle of arrival detection device | |
| CN104808177A (en) | Indoor positioning system and method based on rotatable inclined receiving end | |
| CN109343000A (en) | A kind of indoor visible light imaging positioning system and localization method | |
| US11682133B2 (en) | Automatic light position detection system | |
| CN106950571A (en) | Single image sensor indoor visible light alignment system and method are measured based on non-angled |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| 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: 20191122 |