CN213876001U - LED indoor positioning device and system - Google Patents
LED indoor positioning device and system Download PDFInfo
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- CN213876001U CN213876001U CN202022787202.9U CN202022787202U CN213876001U CN 213876001 U CN213876001 U CN 213876001U CN 202022787202 U CN202022787202 U CN 202022787202U CN 213876001 U CN213876001 U CN 213876001U
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Abstract
The utility model discloses a LED indoor positioning device and system, wherein the device comprises a LED light-emitting unit, a controller and a light intensity detection unit, the LED light-emitting unit comprises a LED light source, a LED driver and a dimming module, and the light intensity detection unit comprises a beacon detection module and a positioning detection module; the LED driver is connected with the LED light source and the dimming module, the input end of the controller is connected with the beacon detection module, and the output end of the controller is connected with the dimming module. The utility model discloses a positioner based on visible light intensity, with the stable LED lamp of light-emitting characteristic as the light source, the receiving terminal only needs to carry on ordinary light intensity sensor and receives illumination intensity data, and reduce cost that can be great has also avoided the visible light location technique commonly used simultaneously to the high requirement of transmission with receiving arrangement, greatly increased the suitability of location scheme.
Description
Technical Field
The utility model relates to a visible light location technical field, in particular to indoor positioner of LED and system.
Background
With the increase of the complexity of indoor environment, the demand of people on position information is higher and higher, and the indoor positioning technology has wide application prospects in places such as commercial centers, large public buildings (subways, airports, libraries and the like), high-risk industrial areas, hospitals, nursing homes and the like. The indoor positioning technology based on the LED visible light can utilize the existing lighting LED lamp and realize indoor positioning in a mode that the mobile terminal receives signals. Compared with other positioning technologies, the technology has the advantages of high precision, strong portability, simple implementation and the like, and based on the advantages, the visible light indoor positioning technology gradually becomes a current research hotspot.
Currently, indoor positioning technologies based on visible light communication are mainly classified into four categories: the first type is that different LEDs are used as anchor nodes, a point to be measured receives information of each LED to calculate the distance between the point to be measured and each anchor node, and positioning results are obtained through trilateral positioning, so that the positioning error is large. The second method is to use the distribution of indoor light intensity and use the method of time difference of arrival to position, and the precision is not high. The third is to apply the fingerprint method in the traditional positioning technology to the positioning scheme of visible light, and the positioning precision is positively correlated with the density of the fingerprint library. The fourth method is to use image detection technology to compare image similarity positioning in the environment, and the accuracy is high but the cost is too high.
For example, chinese utility model patent No. CN2018214849370, "visible light positioning device", chinese utility model patent No. CN2017204114104, "an indoor accurate positioning device using LED light", all of which are based on the principle that modulated signals are modulated and emitted on an LED lamp, and the position information to be transmitted is encoded into digital signals, and the digital signals are used as positioning features and decoded by using an optical receiving device, thereby realizing positioning. However, the positioning method has obvious disadvantages that a specific illumination decoder must be used for the demodulation information receiving end, which causes the problem of high device cost, and the positioning process is complicated and is not easy to popularize and use.
Disclosure of Invention
In order to solve the problems existing in the prior art, the utility model provides an indoor positioner of LED and system is the indoor positioner of LED based on self-adaptation light intensity, need not carry out the codec, only realizes the location through light signal's intensity variation.
The utility model discloses in a first aspect, a LED indoor positioning device is provided, including LED luminescence unit, controller and light intensity detecting element, LED luminescence unit includes LED light source, LED driver and dimming module, light intensity detecting element includes beacon detection module and location detection module; the LED driver is connected with the LED light source and the dimming module, the input end of the controller is connected with the beacon detection module, and the output end of the controller is connected with the dimming module.
Further, the beacon detection module comprises a first illumination sensor, the first illumination sensor is used for receiving optical signals emitted by the LED light source, converting the optical signals into electric signals, and then sending the electric signals to the controller, so that the effect of detecting the total light intensity of the positioning area to control the adjustment of the LED light intensity is achieved.
Furthermore, the positioning detection module comprises a second illumination sensor, the second illumination sensor converts the light intensity signal into an electric signal and transmits the electric signal to the server, and the server realizes the positioning of the positioning detection module by comparing the electric signal with a light intensity fingerprint library established offline.
Further, the LED lighting unit, the controller, the beacon detection module, and the positioning detection module all include a communication module for data transmission with other modules.
Further, the communication module is a bluetooth communication module.
Furthermore, the positioning detection module is a smart phone or a tablet computer.
In a second aspect, the present invention provides an indoor positioning system for LED, including a plurality of indoor positioning devices for LED, wherein the LED light emitting unit and the light intensity detecting unit are provided with a plurality of light intensity detecting units, and the controller has one light intensity detecting unit.
Furthermore, the positioning system also comprises a server which is in communication connection with the controller, and the server is used for obtaining the adjustment result of the illumination intensity through a light intensity fingerprint library established offline and sending the result to the controller to realize the self-adaptive change of the LED light intensity. The server is in communication connection with a positioning detection module in the light intensity detection unit, and compares the current illumination intensity of the LED light source received by the positioning detection module with a light intensity fingerprint database established offline to realize indoor positioning.
The utility model discloses a positioner based on visible light intensity, with the stable LED lamp of light-emitting characteristic as the light source, the receiving terminal only needs to carry on ordinary light intensity sensor and receives illumination intensity data, reduce cost that can be great. On the other hand, along with the popularization of intelligent terminals, intelligent terminals such as smart phones generally integrate an illumination sensor, directly receive and process illumination intensity signals through the intelligent terminals, directly present positioning results on the mobile terminals, avoid high requirements of common visible light positioning technologies on transmitting and receiving devices, and greatly increase the applicability of positioning schemes.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a block diagram of a structure of an LED indoor positioning device according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a part of an LED lighting unit and a controller in an LED indoor positioning system according to another embodiment of the present invention;
fig. 3 is a schematic diagram of a part of the light intensity detecting unit in the LED indoor positioning system according to another embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The visible light indoor positioning has many advantages, the white light LED system is very convenient to arrange and build, the indoor visible light positioning can be used as a value-added service on the basis of the existing lighting facilities, the facilities are hardly required to be additionally built, and the front-end cost is low. The positioning accuracy is also higher, but the traditional positioning method based on visible light has a complex positioning process and high requirements on receiving terminal hardware. In the existing method for singly using visible light for indoor positioning, a plurality of LEDs with chips and artificially settable light emitting frequency are generally used as light sources, and a receiving end must use a specific illumination decoder.
The utility model provides an indoor positioner's of LED receiving terminal adopts illumination sensor, compare with traditional visible light positioner and reduced equipment cost, the real-time illumination intensity of this point under the current environment that detects with illumination sensor sends for the controller through the wireless communication mode, the controller sends this real-time light intensity data to the server, the server obtains the adjustment result of illumination intensity through the light intensity fingerprint storehouse that the off-line was established, and send the controller with the result, the realization is carried out feedback control to LED light intensity, the light intensity characteristic value that corresponds in this regional fingerprint storehouse is stabilized all the time to the illumination intensity sum of messenger this point. The device has the advantages that the terminal equipment detects all external visible light, the external natural light is not considered as an interference factor any more, the influence of the external natural light on the visible light intensity positioning is eliminated through controlling variables, the visible light positioning based on the LED lamp is not limited in a closed space any more, and the application scene is greatly expanded.
Specifically, the indoor positioner of LED of this embodiment includes LED luminescence unit, controller and light intensity detecting element, and wherein the light intensity detecting element is connected to the input of controller, and LED luminescence unit is connected to the output, and LED luminescence unit also is connected with light intensity detecting element. The light intensity detection unit comprises a beacon detection module and a positioning detection module, the beacon detection module is fixedly installed at a certain place and used for detecting real-time light intensity data of a divided region and transmitting the real-time light intensity data to the controller, the controller transmits the real-time light intensity data to the server, the server calculates the light intensity action required to be adjusted in the region and returns the light intensity action to the controller, the controller sends a feedback control signal to a dimming module of the LED light emitting unit, and the dimming module adjusts the light intensity, so that the sum of the detected light intensities when the beacon detection module is located in the region is finally stabilized to be a value required for positioning in the region fingerprint library, and the self-adaptive adjustment of LED light is realized. The positioning detection module is movable, converts the received optical signals into electric signals and transmits the electric signals to the server, and the indoor positioning function is realized by inquiring corresponding position information by contrasting the light intensity fingerprint library.
Specifically, the LED light-emitting unit comprises an LED light source, an LED driver and a dimming module, wherein the LED light source is improved based on a daily lighting LED lamp and is arranged on an indoor ceiling. The LED driver is connected with the indoor lighting power supply circuit and respectively provides power for the LED light source and the dimming module. The dimming module is a power processor and is driven by power to adjust the light intensity of the LED light source according to a feedback signal of the controller.
In this embodiment, the beacon detection module includes a first illumination sensor, and is configured to receive an optical signal emitted by the LED light source, convert the optical signal into an electrical signal, and send the electrical signal to the controller, so as to implement adaptive adjustment of LED light.
Similarly, the positioning detection module comprises a second illumination sensor for receiving an optical signal emitted by the LED light source and converting the optical signal into an electrical signal, and then sending the electrical signal to the server, so as to realize the positioning of the terminal carrying the positioning detection module.
Generally, the LED lighting unit, the controller, the beacon detection module and the positioning detection module all include a communication module, and all of them are connected and signal transmitted through the communication module. Because of indoor positioning, the communication module is preferably a low-power Bluetooth communication module.
Preferably, the positioning detection module adopts a smart phone implanted with a bluetooth module as a mobile terminal, directly receives the bluetooth signal transmission light intensity data through the smart phone and completes data processing, and presents the positioning result on the mobile terminal to realize indoor positioning of the terminal.
In this embodiment, regard as the anchor node in the positioning scheme with the LED lamp that is used for the illumination in the indoor environment, because the smart mobile phone has integrateed the illumination sensor, also can obtain illumination intensity information when receiving the bluetooth signal, avoided the high requirement of visible light location technique commonly used to transmission and receiving arrangement.
The utility model aims to protect can self-adaptation regulation light intensity's LED positioner, the all outside visible lights of detectable no longer regard external natural light as interference factor, have eliminated the influence of external natural light to visible light intensity location through controlled variable, and the visible light location based on the LED lamp will no longer confine to the enclosure space, has extended the application scene greatly.
The utility model also provides an indoor positioning system of LED, including a plurality of above arbitrary technical scheme LED indoor positioner, wherein include a plurality of LED luminescence unit and a plurality of light intensity detecting element. The positioning system also comprises a server which is in communication connection with the controller, obtains the adjustment result of the illumination intensity through the light intensity fingerprint database established offline, and sends the result to the controller.
Specifically, the operation principle of the positioning system is as follows.
An off-line stage: the off-line stage beacon detection device collects light intensity information of each point in a certain fixed illumination environment of the area to construct a light intensity fingerprint library, so that the position information of each point in the area in the fingerprint library established in the off-line stage is fixedly corresponding to the light intensity data of the area.
And (3) self-adaptive stage: the beacon detection module transmits all received light signals including ambient light and reflected light to the controller in a wireless mode through Bluetooth, the controller transmits the real-time light intensity data to the server, the server returns the light intensity data to the controller after obtaining the light intensity action required to be adjusted by the point, the controller sends a feedback control signal to the dimming module of the LED light-emitting unit, and the dimming module adjusts the light intensity, so that the light intensity sum detected by the point is finally stabilized at the light intensity value corresponding to the position information of the point in the fingerprint library, and self-adaptive adjustment of the light intensity is realized.
An online stage: the positioning detection module measures the illumination intensity value of the point to be measured in real time, and obtains the position information of the area by contrasting the established off-line fingerprint database, so as to realize indoor positioning.
The LED positioning lamp is applied to the existing lighting power distribution system, carries the dimming module and the communication module, and establishes the positioning device after being connected with the controller, so that the positioning system is simplified, the construction of the positioning system is facilitated, and the cost of the positioning system is reduced. In addition, the LED positioning lamp based on visible light positioning is environment-friendly, free of electromagnetic interference and electric power interference.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral part; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. The above-mentioned "first" and "second" are only a convenient distinguishing mark, which can be redefined according to the actual situation, and all belong to the inventive idea of the present invention, and are also within the scope of the claimed invention.
The technical means disclosed by the scheme of the present invention is not limited to the technical means disclosed by the above embodiments, but also includes the technical scheme formed by the arbitrary combination of the above technical features.
Claims (8)
1. An LED indoor positioning device is characterized by comprising an LED light-emitting unit, a controller and a light intensity detection unit, wherein the LED light-emitting unit comprises an LED light source, an LED driver and a dimming module; the LED driver is connected with the LED light source and the dimming module, the input end of the controller is connected with the beacon detection module, and the output end of the controller is connected with the dimming module.
2. The LED indoor positioning apparatus of claim 1, wherein the beacon detection module comprises a first illumination sensor for receiving an optical signal emitted by the LED light source, converting the optical signal into an electrical signal, and then sending the electrical signal to the controller.
3. The LED indoor positioning device of claim 1, wherein the positioning detection module comprises a second illumination sensor, the second illumination sensor converts the light intensity signal into an electrical signal and transmits the electrical signal to the server, and the server performs positioning of the positioning detection module by comparing the electrical signal with a light intensity fingerprint database established offline.
4. The LED indoor positioning device of any one of claims 1 to 3, wherein the LED light unit, the controller, the beacon detection module and the positioning detection module all comprise a communication module.
5. The LED indoor positioning device of claim 4, wherein the communication modules are all Bluetooth communication modules.
6. The LED indoor positioning device of claim 1, wherein the positioning detection module is a smartphone or a tablet computer.
7. An LED indoor positioning system, comprising a plurality of LED indoor positioning devices as claimed in claims 1-6, wherein there are a plurality of LED light emitting units and light intensity detecting units, and there is one controller.
8. The LED indoor positioning system of claim 7, further comprising a server, wherein the server is in communication connection with the controller and the positioning detection module in the light intensity detection unit, and the server is configured to obtain an adjustment result of the illumination intensity through an offline-established light intensity fingerprint library and send the adjustment result to the controller, so as to implement adaptive change of the LED light intensity.
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| CN202022787202.9U CN213876001U (en) | 2020-11-26 | 2020-11-26 | LED indoor positioning device and system |
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| CN202022787202.9U CN213876001U (en) | 2020-11-26 | 2020-11-26 | LED indoor positioning device and system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114460852A (en) * | 2021-12-24 | 2022-05-10 | 珠海格力电器股份有限公司 | Indoor lighting device, method, storage medium and electronic device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114460852A (en) * | 2021-12-24 | 2022-05-10 | 珠海格力电器股份有限公司 | Indoor lighting device, method, storage medium and electronic device |
| CN114460852B (en) * | 2021-12-24 | 2024-05-31 | 珠海格力电器股份有限公司 | Indoor lighting device, indoor lighting method, storage medium and electronic equipment |
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