CN106842126B - Positioning navigation system based on visible light communication - Google Patents
Positioning navigation system based on visible light communication Download PDFInfo
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- CN106842126B CN106842126B CN201710069608.3A CN201710069608A CN106842126B CN 106842126 B CN106842126 B CN 106842126B CN 201710069608 A CN201710069608 A CN 201710069608A CN 106842126 B CN106842126 B CN 106842126B
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- positioning
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- 238000004891 communication Methods 0.000 title claims abstract description 62
- 238000001514 detection method Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 6
- 230000006855 networking Effects 0.000 claims description 6
- 230000003287 optical effect Effects 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 12
- 238000005516 engineering process Methods 0.000 description 11
- 230000006870 function Effects 0.000 description 8
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
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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- 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
- G01S5/0009—Transmission of position information to remote stations
- G01S5/0018—Transmission from mobile station to base station
- G01S5/0036—Transmission from mobile station to base station of measured values, i.e. measurement on mobile and position calculation on base station
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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
Abstract
The invention belongs to the field of optical communication, and particularly relates to a positioning navigation system based on visible light communication, wherein a visible light receiving-transmitting array comprises a plurality of LED lamps and a plurality of first visible light receiving devices which are arranged in a space, the first visible light receiving devices are in communication connection with a navigation server, the visible light emitted by each LED lamp carries coding information, and the navigation server emits visible light carrying service information through the LED lamps; the positioning navigation module comprises a navigation device, a second visible light receiving device and a visible light emitting device, wherein the second visible light receiving device receives the visible light which is emitted by the LED lamp and carries information, the second visible light receiving device also detects the light intensity of the received visible light, the positioning navigation module emits the visible light which carries information through the visible light emitting device, and the first visible light receiving device sends the obtained information to the navigation server after receiving the visible light. The system utilizes visible light to realize positioning, navigation and communication, has high accuracy and is healthy in use.
Description
Technical Field
The invention belongs to the field of optical communication, and particularly relates to a positioning navigation system based on visible light communication.
Background
Global positioning system (GPS, global Positioning System) is a very widely used positioning navigation technology that provides global positioning coverage and navigation services by measuring the time difference of arrival of a plurality of satellite signals at a GPS receiver to estimate the position. However, GPS is often not accurately located in certain locations, particularly indoors, due to either an inability to receive satellite signals or poor signal quality.
The current indoor positioning system is mainly based on infrared technology, ultrasonic technology, wireless local area network technology, bluetooth technology and the like. The use of these techniques often uses communication between a moving object and a fixed unit to determine the relative position between them, and thus to infer the true position of the object. The infrared technology and the ultrasonic technology are effective in the occasions of simple indoor structure and limited indoor area, but in reality, the indoor structure is quite complex and is extremely easy to be interfered by human, so the two methods are not practical. In areas where wireless communication is prohibited or restricted, such as in mines, gas stations, aircraft cabins, etc., it is not possible to perform positioning using wireless lan technology or bluetooth technology.
The visible light communication technology is to transmit information by utilizing high-speed bright and dark flickering signals emitted by fluorescent lamps or light emitting diodes and the like, the visible light communication has the characteristics of no occupation of channel resources and safe point-to-point transmission, and the visible light is harmless to human bodies, so that the visible light has a good application prospect.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a positioning navigation system based on visible light communication, which utilizes visible light to realize positioning, navigation and communication, has high navigation and positioning accuracy, and has the application range which is not limited by the environment with complicated structure or limited radio.
In order to achieve the above object, the present invention is achieved by:
a positioning navigation system based on visible light communication comprises a visible light receiving and transmitting array, a navigation server and a positioning navigation module; the visible light receiving and transmitting array comprises a plurality of LED lamps and a plurality of first visible light receiving devices which are arranged in a space, each LED lamp is provided with an information loading circuit, the information loading circuits are used for controlling the LED lamps to emit visible light carrying information, and the first visible light receiving devices are all in communication connection with the navigation server; the visible light emitted by each LED lamp carries coding information, and the coding information comprises the spatial position information of the LED lamp; the navigation server can emit visible light carrying service information through one or more LED lamps; the positioning navigation module comprises a navigation device, a second visible light receiving device and a visible light emitting device, wherein the second visible light receiving device is used for receiving visible light which is emitted by the LED lamps and carries information and detecting the light intensity of the received visible light, and after at least obtaining the coding information of 3 LED lamps and the corresponding light intensity, the current position information of the positioning navigation module is obtained through an RSSI triangle positioning method; the visible light emitting device is provided with an information loading circuit, the positioning navigation module emits visible light carrying information through the visible light emitting device, and the first visible light receiving device sends the obtained information to the navigation server after receiving the visible light emitted by the visible light emitting device.
Further, the LED lamp is provided with a detection device for detecting the current state of the LED lamp, and the detection device is in communication connection with the navigation server.
Further, the detection device is used for detecting the luminous intensity of the LED lamp and sending the luminous intensity information of the LED lamp to the navigation server, and the navigation server adds the luminous intensity information of the LED lamp into the coding information of the LED lamp.
Furthermore, the LED lamps are provided with luminous intensity control devices, the luminous intensity control devices are controlled by the navigation server, and the navigation server controls the luminous intensities of the LED lamps to be consistent by means of the luminous intensity control devices.
Further, the detection device is used for detecting whether the coding information including the spatial position information of the LED lamp is correct or whether the LED lamp is damaged.
Further, the LED lamp is in communication connection with the navigation server through any one of a network cable, a USB data cable and a power line supported by power line networking.
Further, the first visible light receiving device is in communication connection with the navigation server through any one of a network cable, a USB data line or a power line supported by power line networking.
Further, the service information includes navigation service information, map information, and network communication information.
Further, the information carried by the visible light sent by the visible light sending device through the positioning navigation module comprises the current position information, the service request information and the network communication information of the positioning navigation module.
Furthermore, in the visible light receiving and transmitting array, only 1 LED lamp out of every adjacent N LED lamps is in communication connection with the navigation server, and 1 first visible light receiving device is arranged at every interval M LED lamps; n is an integer, N is more than or equal to 2, M is an integer, and M is more than or equal to 2.
Compared with the prior art, the invention has the following beneficial effects:
the positioning navigation system based on visible light communication provided by the invention combines the visible light positioning and the visible light communication, the positioning function, the navigation function and the data transmission function of the positioning navigation module are realized by visible light, other wireless communication modes can be not added, dependence on the existing wireless communication modes such as GPS communication, WIFI communication, 2G, 3G, 4G and the like is reduced, and the positioning navigation system can be normally used in places where wireless communication is limited; in addition, the visible light harmless to people is used for replacing the wireless communication signals, so that radiation in space can be reduced, harm to human bodies is reduced, and the wireless communication system is beneficial to health.
Drawings
Fig. 1 is a schematic diagram of a positioning navigation system based on visible light communication of the present invention.
Detailed Description
Exemplary embodiments, features and aspects of the present invention will be described in detail below with reference to the attached drawings. In the drawings, like reference numbers indicate identical or functionally similar elements. Although various aspects of the embodiments are illustrated in the accompanying drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
The invention relates to visible light communication, which is common in the prior art, namely, a communication mode for transmitting signals by controlling the bright and dark flicker of lamplight. The LED lamp 21 and the visible light emitting device 33 in the present invention are both built with an information loading circuit, after converting the information to be transmitted into binary data, the binary data is transferred to the information loading circuit, and the information loading circuit controls the LED lamp 21 and the visible light emitting device 33 to flash in bright and dark, thereby realizing the signal transmission; the first visible light receiving device 22 and the second visible light receiving device 32 in the present invention are both used for receiving visible light, which can restore the visible light carrying information into binary data by sensing the bright and dark flash of the lamp light, wherein the second visible light receiving device 32 is also provided with a light intensity detection chip for detecting the light intensity of the received visible light.
The invention relates to a positioning navigation system based on visible light communication, which is shown in fig. 1 and comprises a visible light receiving and transmitting array, a navigation server 1 and a positioning navigation module 3. The visible light transceiving array includes a plurality of LED lamps 21 and a plurality of first visible light receiving devices 22 arranged in a space, in fig. 1, only 4 LED lamps 21 and 2 first visible light receiving devices 22 are shown, fig. 1 is a schematic diagram only, and in practice, the LED lamps 21 and the first visible light receiving devices 22 should be arranged in a plurality in a space, and they are not all arranged on the same straight line in a space, but are arranged on the same plane to be distributed toward the periphery or arranged in a space three-dimensional manner. The navigation server may also be an internet server.
Each LED lamp 21 is provided with an information loading circuit for controlling the LED lamp 21 to emit visible light carrying information. Firstly, the visible light emitted by each LED lamp 21 carries coding information, and the coding information comprises the spatial position information of the LED lamp 21; next, the navigation server 1 emits the visible light carrying the service information through the LED lamps 21, but not necessarily each LED lamp 21 has a function of emitting the visible light carrying the service information, which will be described later.
The first visible light receiving means 22 is in communication connection with the navigation server 1, the first visible light receiving means 22 receiving visible light carrying information and transmitting the resulting data to the navigation server 1.
The positioning navigation module 3 includes a navigation device 31, a second visible light receiving device 32, and a visible light emitting device 33, where the navigation device 31 may be a mobile phone, a tablet computer, a navigator, or the like with a navigation program installed thereon, the second visible light receiving device 32 is communicatively connected with the navigation device 31, and the visible light emitting device 33 is also communicatively connected with the navigation device 31.
The second visible light receiving device 32 is configured to receive the visible light carrying information emitted by the LED lamp 21, and since the visible light emitted by the LED lamp 21 carries encoded information, the encoded information includes spatial position information of the LED lamp 21, and thus the initial position of the positioning navigation module 3 can be obtained. The second visible light receiving device 32 is further configured to detect the light intensity of the received visible light, where the light intensity of the light beam decreases during the propagation process, so that the light intensity of a certain LED lamp detected by the second visible light receiving device 32 is lower than the light intensity of the LED lamp, that is, the farther from the LED lamp, the lower the detected light intensity, and thus, the distance between the positioning and navigation module 3 and the LED lamp emitting the visible light can be calculated by detecting the light intensity. After at least obtaining the coding information of the 3 LED lamps 21 and the corresponding received light intensities, obtaining the accurate position of the positioning navigation module 3, namely the current positioning information, by an RSSI triangle positioning method. The current positioning information of the positioning navigation module 3 can be used by the positioning navigation module 3 locally, and when the map information is arranged in the positioning navigation module 3, navigation calculation can be completed locally; of course, the current positioning information of the positionable navigation module 3 is uploaded to the navigation server 1 in real time, the navigation server 1 calculates in the cloud, and the navigation result is transmitted back to the positionable navigation module 3 in real time after being obtained, so that the memory space of the positionable navigation module 3 is saved. The positioning and the navigation are realized.
The visible light emitting device 33 is also provided with an information loading circuit, the positioning navigation module 3 emits visible light carrying information through the visible light emitting device 33, the first visible light receiving device 22 is used for receiving the visible light carrying information emitted by the visible light emitting device 33, and then the obtained information is sent to the navigation server 1, so that unidirectional data transmission from the positioning navigation module 3 to the navigation server 1 is realized; meanwhile, the navigation server 1 emits visible light carrying service information through the LED lamp 21, and the second visible light receiving device 32 is used for receiving the visible light carrying information emitted by the LED lamp 21, so that unidirectional data transmission from the navigation server 1 to the positioning navigation module 3 is realized. The combination realizes the bidirectional data transmission between the positioning navigation module 3 and the navigation server 1.
Therefore, through the scheme, the positioning navigation system based on visible light communication has the functions of positioning, navigation and data transmission. In the existing visible light positioning navigation technology, even though the positioning function is realized through visible light communication, the data transmission is realized through wireless networks such as GPS, WIFI, 2G, 3G or 4G, and the like, and the data transmission cannot be performed at the place where part of wireless signals are limited, so that the online navigation function is weakened, and the navigation can be generally performed only by using an offline map. The functions of positioning, navigation and data transmission can be completed through visible communication, so that the problems are well solved.
In this embodiment, a detection device for detecting the current state of the LED lamp 21 is disposed on the LED lamp 21, and the detection device is in communication connection with the navigation server 1, and detects the state of the LED lamp 21 in real time and sends the detection result to the navigation server 1 in real time. Preferably, the detecting device is configured to detect the light emitting intensity of the LED lamp 21, and send the light emitting intensity information of the LED lamp 21 to the navigation server 1, where the navigation server 1 adds the light emitting intensity information of the LED lamp 21 to the encoded information of the LED lamp 21, for example, the current light emitting intensity of the LED lamp 21 is only 80% of the normal value, and the decrease of the light emitting intensity will decrease the light intensity of the LED lamp 21 detected by the second visible light receiving device 32, which will affect the distance calculation result, so that the light emitting intensity of the LED lamp 21 needs to be recorded in real time, and may also be sent to the positioning navigation module 3 when needed, and called when calculating the distance. Preferably, the LED lamp 21 is provided with a light emission intensity control device, which may be a chip that controls the intensity of current by which the light emission intensity of the LED lamp 21 is controlled; the luminous intensity control device is controlled by the navigation server 1, and the navigation server 1 controls the luminous intensity of each LED lamp 21 to be consistent, so that subsequent operation is convenient. Preferably, the detecting device is further configured to detect whether the coded information about the spatial position information of the LED lamp 21 is correct, correct in time when incorrect, or detect whether the LED lamp 21 is damaged, for example, detect the luminous intensity of the LED lamp 21 and set a threshold value, when the detected luminous intensity is lower than the threshold value, obtain that the LED lamp 21 is damaged, and alarm in time when the detected damage of the LED lamp 21 is detected.
In this embodiment, the LED lamp 21 is in communication connection with the navigation server 1 through any one of a network cable, a USB data cable, and a power line supported by power line networking, and at the same time, the first visible light receiving device 22 is in communication connection with the navigation server 1 through any one of a network cable, a USB data cable, and a power line supported by power line networking. In this way, no radio radiation is generated in the space, which is beneficial for health.
In the present embodiment, the service information transmitted from the navigation server 1 to the positioning navigation module 3 includes, but is not limited to, navigation service information, map information, and network communication information; the service information may include navigation service, available services in the vicinity, etc., and the map information may include the topography of the vicinity, service providing points, etc., and the network communication information allows the user to communicate with customer service personnel, browse information on the internet, etc. Meanwhile, the information transmitted from the positioning and navigation module 3 through the visible light emitting device 33 includes, but is not limited to, current location information, service request information, and network communication information of the positioning and navigation module 3.
In this embodiment, in the visible light transceiver array, only 1 LED lamp 21 of every adjacent N LED lamps 21 is in communication connection with the navigation server 1, and 1 first visible light receiving device 22 is disposed at every interval of M LED lamps 21; as shown in fig. 1, only 1 LED lamp 21 of every 2 adjacent LED lamps 21 is in communication connection with the navigation server 1, and 1 first visible light receiving device 22 is provided for every 2 LED lamps 21. In practical application, because the light of the plurality of LED lamps 21 needs to be repeatedly irradiated for positioning, but the light is not necessarily irradiated for data transmission, so long as the light energy of the light irradiates to the position to realize data transmission, each LED lamp 21 is not required to be in communication connection with the navigation server 1, the first visible light receiving device 22 is not required to be arranged too densely, the cost is reduced, the densities of the specifically arranged LED lamps 21 and the first visible light receiving device 22 can be determined according to practical situations, and the signals are not disconnected during data transmission.
Finally, it should be noted that: the embodiments described above are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced with equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (7)
1. The positioning navigation system based on visible light communication is characterized by comprising a visible light receiving and transmitting array, a navigation server and a positioning navigation module;
the visible light receiving and transmitting array comprises a plurality of LED lamps and a plurality of first visible light receiving devices which are arranged in a space, each LED lamp is provided with an information loading circuit, the information loading circuits are used for controlling the LED lamps to emit visible light carrying information, and the first visible light receiving devices are all in communication connection with the navigation server; the visible light emitted by each LED lamp carries coding information, and the coding information comprises the spatial position information of the LED lamp; the navigation server can emit visible light carrying service information through more than one LED lamp;
in the visible light receiving and transmitting array, only 1 LED lamp in every adjacent N LED lamps is in communication connection with the navigation server, and 1 first visible light receiving device is arranged on every interval M LED lamps; n is an integer, N is more than or equal to 2, M is an integer, and M is more than or equal to 2;
the positioning navigation module comprises a navigation device, a second visible light receiving device and a visible light emitting device, wherein the second visible light receiving device is used for receiving visible light which is emitted by the LED lamps and carries information and detecting the light intensity of the received visible light, and after at least obtaining the coding information of 3 LED lamps and the corresponding light intensity, the current position information of the positioning navigation module is obtained through an RSSI triangle positioning method; the visible light emitting device is provided with an information loading circuit, the positioning navigation module emits visible light carrying information through the visible light emitting device, and the first visible light receiving device sends the obtained information to the navigation server after receiving the visible light emitted by the visible light emitting device;
the LED lamp is provided with a luminous intensity control device, the luminous intensity control device is controlled by the navigation server, and the navigation server records the luminous intensity of the LED lamp;
the detection device of the LED lamps detects coding information of the related spatial position information of the LED lamps, and can give an alarm when the coding information is incorrect or the LED lamps are damaged, and the navigation server controls the luminous intensity of each LED lamp by means of the luminous intensity control device so as to keep the luminous intensity consistent;
the LED lamp is in communication connection with the navigation server through any one of a network cable, a USB data cable or a power line supported by power line networking, so that the positioning navigation system can be normally used in a place where wireless communication is limited.
2. The positioning navigation system based on visible light communication according to claim 1, wherein the LED lamp is provided with a detection device for detecting the current state of the LED lamp, and the detection device is in communication connection with the navigation server.
3. The positioning and navigation system based on visible light communication according to claim 2, wherein the detecting means is configured to detect the light emission intensity of the LED lamp and send the light emission intensity information of the LED lamp to the navigation server, and the navigation server adds the light emission intensity information of the LED lamp to the encoded information of the LED lamp.
4. The positioning navigation system based on visible light communication according to claim 2, wherein the detecting means is configured to detect whether the encoded information of the LED lamp including spatial position information is correct or whether the LED lamp is damaged.
5. The positioning and navigation system based on visible light communication according to claim 1, wherein the first visible light receiving device is communicatively connected to the navigation server by any one of a network cable, a USB data cable, and a power line supported by a power line networking.
6. The positioning and navigation system based on visible light communication of claim 1, wherein the service information includes navigation service information, map information, and network communication information.
7. The positioning and navigation system based on visible light communication according to claim 1, wherein the information carried by the visible light emitted by the positioning and navigation module through the visible light emitting device includes current location information, service request information and network communication information of the positioning and navigation module.
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| CN201710069608.3A CN106842126B (en) | 2017-02-08 | 2017-02-08 | Positioning navigation system based on visible light communication |
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| CN201710069608.3A CN106842126B (en) | 2017-02-08 | 2017-02-08 | Positioning navigation system based on visible light communication |
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| CN108134628A (en) * | 2017-12-19 | 2018-06-08 | 中国电子产品可靠性与环境试验研究所 | Visible light communication reception device, alignment system, earphone and mobile terminal |
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| CN206421023U (en) * | 2017-02-08 | 2017-08-18 | 广东昭信照明科技有限公司 | A kind of Position Fixing Navigation System based on visible light communication |
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