CN105005025A - Precise positioning system based on visible light and precise positioning method thereof - Google Patents
Precise positioning system based on visible light and precise positioning method thereof Download PDFInfo
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- CN105005025A CN105005025A CN201510399543.XA CN201510399543A CN105005025A CN 105005025 A CN105005025 A CN 105005025A CN 201510399543 A CN201510399543 A CN 201510399543A CN 105005025 A CN105005025 A CN 105005025A
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Classifications
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- 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
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- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Optical Communication System (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
Abstract
The invention discloses a precise positioning system based on visible light and a precise positioning method thereof. With the prominence of GPS precision limitation and the appearance of indoor positioning requirements, the development of visible light communication indoor positioning technology is facilitated. Light directivity and intensity distribution information are utilized, and only one higher illumination node and a lower light receiving sensor array are used to realize distance centimeter-grade precise positioning. A relatively high node density (namely at least three higher illumination nodes are needed to generate intersection covering) caused by a difference positioning mode is prevented. According to the invention, the construction is simple, the disposition difficulty of higher light source nodes is lowered, and the hardware complexity of lower light receiving nodes is reduced. For a LED light source, real-time positioning can be realized without influencing visible light communication. The precise positioning system and the precise positioning method thereof are high in positioning precision, good in practicability, low in system cost, applicable to scenes such as various kinds of indoor positioning and wide in application prospect.
Description
Technical field
The invention belongs to technical field of visible light communication, particularly one is based on visible ray Precise Position System and accurate positioning method thereof.
Background technology
In recent years, panel computer, the quick increase of the mobile devices such as mobile phone strengthens and has highlighted the restriction that radiotelegraphy is brought, and these restrictions comprise bandwidth restriction, and channel limits, input and output restricted number.Free space optical communication, referred to as optical communication, has been considered to feasible solution.Particularly, visible light communication (VLC), it uses light emitting diode (LED), utilize the response time that it is shorter, with the feature such as the brightness high life is long, carry green intelligent lighting engineering, this will provide scheme and the infrastructure of the radio communication of low cost simultaneously.Highlighting and the appearance of demand of indoor positioning simultaneously along with GPS accuracy limitations, this impels the development of visible light communication location technology.Indoor positioning has wide application scenarios, such as megastore shopping guide, underground garage, mansion indoor navigation etc.
Under normal circumstances, such as imitate GPS and adopt real-time requiring mode, superior node quantity (light source) at least will have 3 to be used for locating, need to carry out synchronously in real time, above-mentioned situation result in the problem of the following aspects: under (1) indoor so short distance, make to use up and position, difference hardware and software cost certainly will be measured in time high; (2) three higher level's light source nodes must be had at least to produce occur simultaneously and cover, in light coverage, almost cannot arbitrfary point be all on 3 light sources occur simultaneously in space under normal, it is large that light source disposes difficulty; (3) imitate GPS mode, each node sends different information, and subordinate's receiver software decode also can corresponding complexity.
Summary of the invention
So, the object of the invention is to, there is provided a kind of based on visible ray Precise Position System and accurate positioning method thereof, it can utilize optical communication to have certain directivity and light intensity physically, only adopt higher level's lighting nodes, receiving trap can realize centimetre-sized simply, easily and accurately locate.
The invention has the beneficial effects as follows that simple structure of the present invention avoids complex hardware equipment and complicated algorithm, and superior node disposes difficulty, and subordinate's light-receiving node hardware complexity.If LED light source, when not affecting visible light communication, location in real time can also be realized accurately.The features such as the present invention has positioning precision high, and practicality is good, and system cost is low, are applicable to the scenes such as various indoor positioning, have broad prospect of application.
Accompanying drawing explanation
For further illustrating concrete reception content of the present invention, be described in detail as follows below in conjunction with embodiment and accompanying drawing, wherein:
Fig. 1 is system architecture schematic diagram of the present invention.
Fig. 2 is method flow diagram of the present invention.
Fig. 3 is the possible deployment form (4 sensor) of sensor array of the present invention.
Embodiment
For representing embodiment of the present invention more clearly further, be introduced in following embodiment and accompanying drawing, below accompanying drawing be system structural framework of the present invention and method step explanation.Once erect its connected mode, can simply realize centimetre-sized and accurately locate.Figure chips and circuit form and do not present, and are not whole embodiments.For technician in field, realizing other embodiments pinpoint by imitating framework, all belonging to the scope of protection of the invention.
Refer to shown in Fig. 1, the invention provides a kind of based on visible ray Precise Position System, comprising:
This signal optical source 10 of one signal optical source 10 is general lighting lamp or visible light communication LED.
One sensor array 11, sensor array 11 is photodetector array, the light signal of its Received signal strength light source 10 and ambient light situation; Wherein photodetector array is at least 2 photodiodes or PIN diode, and spread geometry can be plane or spherical array, deployment form as possible in Fig. 3 array; Photo-detector is photodiode or PIN diode.
One amplification and rectification circuit 12, its input end is connected with the output terminal of sensor array 11, being for receiving, amplifying, the circuit of shaping conditioning light signal, and detects the circuit of light intensity around; It is important optical communication receiver that light-receiving amplifies shaping modulate circuit, and being be the link of digital signal by analog-signal transitions on the one hand, is circuit light intensity being changed into voltage magnitude size on the other hand.
One signal processing circuit 13, it is connected with amplification and rectification circuit 12, is for detecting light intensity, and receive the circuit of optical communication data, its circuit is MCU or FPGA turning digital quantity function based on analog quantity, detects the circuit of light intensity and identification optical communication data;
One interface circuit 14, it is connected with signal processing circuit 13, and wherein interface circuit is serial ports, the circuit of SPI, IIC, IIIC, USB, CAN or blue tooth interface.Connect and digital signal is converted into standard serial port, SPI, IIC, IIIC, USB, CAN or blue tooth interface signal.Can by wireless or wired connection with electronic equipment 15.By interface circuit 14 by Signal transmissions to electronic equipment 15.
One electronic equipment 15, after electronic equipment 15 receives signal, further processing signals.Electronic equipment can be mobile phone, the electronic equipment of all supporting interfaces such as smart mobile phone communication.
The overall work principle of said system is: after sensor receives light signal, by the electric signal transmission after conversion to optical signal amplification shaping circuit, export two kinds of signals, a kind of signal of communication, a kind of light intensity signal, a kind of principle is that light intensity signal is in local circuit, each signal in sensor array compares respectively through with the intensity signal search be previously stored in internal memory, use minimum covariance matching, find closest approach, and this xy coordinate is sent; Another kind of principle is directly sent signal of communication and light intensity signal, and then electronic equipment processes.Be converted to standard interface signal through interface circuit afterwards and send electronic equipment to.
Refer to Fig. 2,3, and Fig. 1 is consulted in combination, the invention provides a kind of based on visible ray accurate positioning method, it is the system described in Fig. 1, if Fig. 3 is for spherical sensor array (4 sensors), comprises the steps:
Step 1: send data or normal illumination by signal optical source 10;
Step 2: spherical sensors array 11 detects signal optical source 10 and sends light signal, and respectively four photo-detectors outputs are converted to electric signal;
Step 3: amplification and rectification circuit 12 is by after four sensor electrical signal transacting, and export two kinds of signal forms respectively, one obtains the discernible digital signal of interface circuit 13, and another kind is output light intensity amplitude signal;
Step 4: signal processing circuit 13 receives the 4 groups of digital signals and amplitude analog signal that circuit 12 exports, and be converted to can processing signals;
Step 5: a kind of method is that in sensor array, each signal compares respectively through with the intensity signal search be previously stored in internal memory in local signal treatment circuit, use minimum covariance matching, find closest approach, and this xy coordinate is sent to interface circuit 14; Another kind method processing signals can directly send to interface circuit 14 by what change in step 4, then allows mobile device or PC process;
Step 6: by interface circuit 14, sends signal, mobile device or PC process information that mobile device or PC can receive.
The invention provides a kind of based on visible ray Precise Position System and accurate positioning method thereof, it can utilize optical communication to have certain directivity and light intensity physically, only adopt higher level's lighting nodes, receiving trap can realize centimetre-sized simply, easily and accurately locate.Effect of the present invention is simple structure, avoids complex hardware equipment and complicated algorithm, and superior node disposes difficulty, and subordinate's light-receiving node hardware complexity.If LED light source, when not affecting visible light communication, location in real time can also be realized accurately.The features such as the present invention has positioning precision high, and practicality is good, and system cost is low, are applicable to the scenes such as various indoor positioning, have broad prospect of application.
Claims (9)
1., based on visible ray Precise Position System and an accurate positioning method thereof, comprising:
One signal optical source 10;
One sensor array 11, the light signal of its Received signal strength light source 10 and ambient light situation;
One amplification and rectification circuit 12, its input end is connected with the output terminal of sensor array 11, being for receiving, amplifying, the circuit of shaping conditioning light signal, and detects the circuit of light intensity around;
One signal processing circuit 13, it is connected with amplification and rectification circuit 12, is for detecting light intensity, receives the circuit of optical communication data;
One interface circuit 14, it is connected with signal processing circuit 13.
2. according to claim 1 based on visible ray Precise Position System, wherein this signal optical source 10 is general lighting lamp or visible light communication LED.
3. according to claim 1 based on visible ray Precise Position System, wherein sensor array 11 is photodetector array, is the array having 3 photo-detector compositions at least.
4. according to claim 3 based on visible ray Precise Position System, wherein photodetector array shape can be plane or spherical array.
5. according to claim 4 based on visible ray Precise Position System, wherein photo-detector is photodiode or PIN diode.
6. according to claim 3 and 4 based on visible ray Precise Position System, wherein photodetector array is at least 2 photodiodes or PIN diode.
7. according to claim 1 based on visible ray Precise Position System, wherein signal processing circuit is MCU or FPGA turning digital quantity function based on analog quantity, detects the circuit of light intensity and identification optical communication data.
8. according to claim 1 based on visible ray Precise Position System, wherein interface circuit is serial ports, the circuit of SPI, IIC, USB, CAN or blue tooth interface.
9., based on a visible ray accurate positioning method, it adopts system according to claim 1, comprises the steps:
Step 1: send data or normal illumination by signal optical source 10;
Step 2: sensor array 11 detects signal optical source 10 and sends light signal, and is converted into electric signal;
Step 3: amplification and rectification circuit 12, by after Electric signal processing, exports two kinds of signal forms, and one obtains the discernible digital signal of interface circuit 13, and another kind is output light intensity amplitude signal;
Step 4: signal processing circuit 13 receives the digital signal and amplitude analog signal that circuit 12 exports, and be converted to can processing signals;
Step 5: a kind of method is that in sensor array, each signal compares respectively through with the intensity signal search be stored in internal memory in local signal treatment circuit, minimum covariance matching, find near point, and this xy coordinate is sent to interface circuit 14; Another kind method processing signals can directly send to interface circuit 14 by what change in step 4, then allows mobile device or PC process;
Step 6: by interface circuit 14, sends signal, mobile device or PC process information that mobile device or PC can receive.
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| CN201510399543.XA CN105005025A (en) | 2015-07-09 | 2015-07-09 | Precise positioning system based on visible light and precise positioning method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105425207A (en) * | 2015-10-29 | 2016-03-23 | 中国计量学院 | Coal mine well positioning system based on ZigBee sensing network and LED |
| CN105548963A (en) * | 2015-12-18 | 2016-05-04 | 中国科学院半导体研究所 | LED positioning based rotatable self-adaptive system |
| CN105881540A (en) * | 2016-05-27 | 2016-08-24 | 深圳市晶荣光电科技有限公司 | Positioning method for part placement |
| CN106249203A (en) * | 2016-07-07 | 2016-12-21 | 北京国承万通信息科技有限公司 | With reference to light-source system, localizing emission system, alignment system and coding implementation method |
| CN106680771A (en) * | 2015-11-10 | 2017-05-17 | 复旦大学 | Reverse positioning system and method |
| CN109631910A (en) * | 2019-02-13 | 2019-04-16 | 中南民族大学 | Based on the matched indoor passive positioning system of light field and its method |
| CN110518951A (en) * | 2019-07-26 | 2019-11-29 | 联想(北京)有限公司 | A kind of information processing method and device |
| CN110873861A (en) * | 2018-09-03 | 2020-03-10 | ***通信集团设计院有限公司 | Indoor navigation method and device |
-
2015
- 2015-07-09 CN CN201510399543.XA patent/CN105005025A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105425207A (en) * | 2015-10-29 | 2016-03-23 | 中国计量学院 | Coal mine well positioning system based on ZigBee sensing network and LED |
| CN105425207B (en) * | 2015-10-29 | 2018-02-02 | 中国计量学院 | A kind of coal mine Location System Design based on ZigBee sensing networks and LED |
| CN106680771A (en) * | 2015-11-10 | 2017-05-17 | 复旦大学 | Reverse positioning system and method |
| CN105548963A (en) * | 2015-12-18 | 2016-05-04 | 中国科学院半导体研究所 | LED positioning based rotatable self-adaptive system |
| CN105881540A (en) * | 2016-05-27 | 2016-08-24 | 深圳市晶荣光电科技有限公司 | Positioning method for part placement |
| CN106249203A (en) * | 2016-07-07 | 2016-12-21 | 北京国承万通信息科技有限公司 | With reference to light-source system, localizing emission system, alignment system and coding implementation method |
| CN106249203B (en) * | 2016-07-07 | 2020-02-21 | 北京国承万通信息科技有限公司 | Reference light source system, positioning transmitting system, positioning system and coding implementation method |
| CN110873861A (en) * | 2018-09-03 | 2020-03-10 | ***通信集团设计院有限公司 | Indoor navigation method and device |
| CN109631910A (en) * | 2019-02-13 | 2019-04-16 | 中南民族大学 | Based on the matched indoor passive positioning system of light field and its method |
| CN109631910B (en) * | 2019-02-13 | 2020-08-28 | 中南民族大学 | Indoor passive positioning system and method based on light field matching |
| CN110518951A (en) * | 2019-07-26 | 2019-11-29 | 联想(北京)有限公司 | A kind of information processing method and device |
| CN110518951B (en) * | 2019-07-26 | 2021-06-15 | 联想(北京)有限公司 | Information processing method and device |
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Effective date of registration: 20160805 Address after: 100000, 0112-40, room 01, 26 Information Road, Haidian District, Beijing Applicant after: Blue sensing (Beijing) Technology Co., Ltd. Address before: The 102400 Beijing Summer Village Shilou town Fangshan District District No. four a Applicant before: Huang Yong |
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Effective date of registration: 20170829 Address after: 225316, Jiangsu, Taizhou City Road, No. 898, medical equipment area, a standard factory building, building 1, north side of building two Applicant after: Blue sensing medical technology Taizhou Co., Ltd. Address before: 100000, 0112-40, room 01, 26 Information Road, Haidian District, Beijing Applicant before: Blue sensing (Beijing) Technology Co., Ltd. |
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Application publication date: 20151028 |