Visible light positioning device based on irregular LED arrangement

Abstract

The utility model discloses a visible light positioning device based on irregular LED arrangement, which comprises a light detection processing all-in-one machine and at least one LED light source, and the LED light source is arranged at any position in a room. The optical detection processing all-in-one machine is arranged on an object to be positioned, and a circuit board is arranged in the optical detection processing all-in-one machine; the optical detection and processing all-in-one machine comprises a shell, and a spiral hole used for installation and fixation is formed in the shell. A cavity is formed in the rear side of the shell; an electric disc is arranged at the bottom of the cavity, a telescopic mechanism is arranged on the electric disc, a light detector is arranged on the telescopic mechanism, and the electric disc, the telescopic mechanism and the light detector are all electrically connected with the circuit board. According to the utility model, the flexible arrangement of the LED lamp source can be realized, the system can adapt to more indoor scenes, and the positioning performance is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of indoor positioning, in particular to a visible light positioning device based on irregular LED arrangement. Background Art

[0002] Indoor positioning technology is one of the key technologies in many application fields such as smart cities and the Internet of Things. With the widespread application of LED lighting technology, indoor positioning technology based on visible light communication has received widespread attention. Most of the existing LED light-based positioning is based on the ideal LED light layout condition, that is, the lights are of the same height and the layout is symmetrical. In actual application scenarios, the layout of LED lights is often unequal and asymmetrical, which will cause part of the light to be blocked, thereby reducing the positioning accuracy. Utility Model Content

[0003] The purpose of the utility model is to provide a visible light positioning device based on irregular LED arrangement. The utility model can realize flexible arrangement of LED light sources, can adapt to more indoor scenes, and has higher positioning performance.

[0004] In order to achieve the above-mentioned purpose, the technical solution provided by the utility model is as follows: a visible light positioning device based on irregular LED arrangement, comprising a light detection and processing integrated machine and at least one LED light source, wherein the LED light source is arranged at any position indoors; the light detection and processing integrated machine is arranged on the object to be positioned, and the light detection and processing integrated machine is equipped with a circuit board; the light detection and processing integrated machine comprises a shell, and a spiral hole for installation and fixation is provided on the shell; a cavity is opened on the rear side of the shell; an electric disc is provided at the bottom of the cavity, a telescopic mechanism is provided on the electric disc, a light detector is provided on the telescopic mechanism, and the electric disc, the telescopic mechanism and the light detector are all electrically connected to the circuit board.

[0005] The above-mentioned visible light positioning device based on irregular LED arrangement has two strip holes on the electric disc; the telescopic mechanism includes two optical rods symmetrically arranged and correspondingly passed through the strip holes; a telescopic cylinder is arranged on the front of the electric disc, and the telescopic end of the telescopic cylinder is connected to the light detector.

[0006] The aforementioned visible light positioning device based on irregular LED arrangement, a servo motor is arranged on the back of the electric disc, the output end of the servo motor is connected to a screw rod, the thread on the screw rod is provided with a moving block; light holes are opened on both sides of the moving block; the light rod is correspondingly inserted into the light holes.

[0007] In the aforementioned visible light positioning device based on irregular LED arrangement, a connecting plate is provided on the light detector; a long moving groove with a T-shaped cross section is opened on the connecting plate; and the telescopic end of the telescopic cylinder is slidably embedded in the moving groove.

[0008] In the aforementioned visible light positioning device based on irregular LED arrangement, a plurality of spiral holes are provided on the four sides of the shell.

[0009] In the aforementioned visible light positioning device based on irregular LED arrangement, the LED light source is circular, and mounting ears are provided on the sides of the LED light source.

[0010] The aforementioned visible light positioning device based on irregular LED arrangement, wherein a magnetic fixing sheet is provided on the LED light source.

[0011] The aforementioned visible light positioning device based on irregular LED arrangement has a control button disposed on the housing, and the control button is electrically connected to the circuit board.

[0012] In the aforementioned visible light positioning device based on irregular LED arrangement, a display screen is provided on the housing, and the display screen is electrically connected to the circuit board.

[0013] The aforementioned visible light positioning device based on irregular LED arrangement, the housing is provided with a USB interface, and the USB interface is electrically connected to the circuit board.

[0014] Compared with the prior art, the LED light source of the utility model can be arranged at any position indoors, without the need for special deployment of LED arrangement, which improves the flexibility of the positioning device. The light detection and processing integrated machine of the utility model adopts an integrated design of various components such as light detectors, and its light detector is placed in the cavity on the rear side of the shell, which helps to protect the light detector. When it needs to work, it is driven to extend by the telescopic mechanism. At the same time, the telescopic mechanism is placed on the electric disc at the bottom of the cavity. The horizontal angle of the light detector can be adjusted by rotating the electric disc to facilitate the light detector to receive the distribution information of the LED light source. Finally, the circuit board processes it and outputs the positioning data, thereby realizing indoor positioning. In addition, a strip hole is provided on the electric disc of the utility model, wherein the light rod in the telescopic mechanism is inserted into the strip hole, and the servo motor on the back side of the electric disc can drive the light rod to rise and fall along the strip hole through the action of the screw and the moving rod, so as to facilitate the adjustment of the height of the light detector and avoid obstruction. Furthermore, the utility model provides a connecting plate on the light detector, and a movable groove is provided on the connecting plate, and then the telescopic end of the telescopic cylinder is slidably embedded in the movable groove, so that when the height of the light detector is adjusted, the telescopic mechanism can be always connected to the light detector through the sliding cooperation between the movable groove and the telescopic end, thereby realizing three operation modes of rotation, telescopic and lifting, which can help the light detector to form different receiving angles. Furthermore, the four sides of the shell of the utility model are provided with multiple spiral holes to facilitate fixing on different devices. The LED light source of the utility model also has a variety of fixing methods, which is convenient for arrangement under different indoor conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 Schematic diagram of the structure of LED light source

[0017] Figure 3 It is a structural schematic diagram of the integrated optical detection and processing machine;

[0018] Figure 4 is a schematic diagram of the structure of the back side of the shell;

[0019] Figure 5 It is a schematic diagram of the structure of the electric disc and the light detector;

[0020] Figure 6 This is a schematic diagram of the structure of the electric disk and the light detector from another perspective.

[0021] Reference numerals

[0022] 1. Light detection and processing integrated machine; 2. LED light source; 3. Shell; 4. Spiral hole; 5. Cavity; 6. Electric disc; 7. Telescopic mechanism; 8. Light detector; 9. Bar hole; 10. Light rod; 11. Telescopic cylinder; 12. Servo motor; 13. Screw; 14. Moving block; 15. Light hole; 16. Connecting plate; 17. Moving slot; 18. Mounting ear; 19. Magnetic fixing plate; 20. Control button; 21. Display screen; 22. USB interface. DETAILED DESCRIPTION

[0023] The following is a detailed description of the specific implementation of the utility model in conjunction with the accompanying drawings, but it should be understood that the protection scope of the utility model is not limited by the specific implementation. The components of the utility model embodiments generally described and shown in the accompanying drawings can be arranged and designed in various different configurations.

[0024] Embodiment: Visible light positioning device based on irregular LED arrangement, such as Figure 1 As shown, it includes a light detection and processing integrated machine 1 and at least one LED light source 2, and the LED light source 2 is arranged at any position indoors. Figure 1 There are 4 LED light sources shown in FIG. 1 , which are arranged irregularly, wherein the light detection and processing integrated machine 1 is located at the lower left corner, and there is an obstruction between the LED light source at the upper right corner; Figure 2As shown, the LED light source adopts a circular LED, and the side wall of the LED light source is provided with a mounting ear 18, and the back thereof is provided with a magnetic fixing piece. When installing the LED light source, the mounting ear 18 can be used to fix it or the magnetic fixing piece can be used to fix it magnetically according to the conditions; the light detection and processing integrated machine 1 is arranged on the object to be positioned, and the light detection and processing integrated machine 1 is built with a circuit board; the circuit board can take the form of, for example, an MCU, a microprocessor or a processor, and a computer-readable medium storing a computer-readable program code (such as software or firmware) that can be executed by the (micro)processor, a logic gate, a switch, an application-specific integrated circuit (ASIC), a programmable logic controller, and an embedded microcontroller. Examples of controllers include, but are not limited to, the following microcontrollers: ARC 625D, Atmel AT91SAM, MicrochipPIC18F26K20, and Silicone Labs C8051F320. The circuit board can be obtained commercially. As Figure 3 As shown, the optical detection and processing integrated machine 1 includes a housing 3, and the four sides of the housing 3 are provided with screw holes 4 for installation and fixing. The specification of the screw holes 4 is M6, which can make the optical detection and processing integrated machine 1 convenient to fix on different objects; Figure 4 As shown, a cavity 5 is provided at the rear side of the housing 3; an electric disc 6 is provided at the bottom of the cavity 5. Figure 5As shown, the electric disc 6 is provided with a telescopic mechanism 7, and the telescopic mechanism 7 is provided with a photodetector 8, and the electric disc 6, the telescopic mechanism 7 and the photodetector 8 are all electrically connected to the circuit board. The electric disc 6 in this embodiment can adopt a conventional disc structure with rotation capability, or a corresponding motor can be provided on the housing 3, the output end of the motor is connected to a gear, and then a corresponding annular tooth is provided on the outer side of the disc, the gear is driven by the motor to rotate, and then the engagement of the gear and the tooth drives the electric disc 6 to rotate. Of course, other rotation methods can also be used in other embodiments. The photodetector 8 in this embodiment can be obtained from the market, such as the InGaAs, Si, Ge, APD photodetector of Beijing Minguang Technology. Of course, a conventional photodetector can also be used, which can detect the light signal incident on its surface, and convert the light signal into a corresponding digital signal, and then output it to the circuit board for corresponding processing. The positioning algorithm used in the utility model is based on the original seagull optimization algorithm (SOA, a heuristic optimization algorithm that simulates the behavioral characteristics of seagulls looking for food in the ocean). The convergence factor is determined by the function dynamically. The convergence changes linearly with iteration, and the change is not periodic. The algorithm allows a larger search step size in the early stage of iteration to explore the solution space. As the iteration proceeds, the step size gradually decreases to perform a more refined search. An adaptive update function is introduced (referring to the fact that during the optimization process, the update function can automatically adjust its parameters and form according to the search state of the algorithm to improve the performance and convergence speed of the algorithm) to dynamically balance the exploration and utilization capabilities of the algorithm, and then combined with the RSSI ranging method (a positioning technology based on wireless signal strength), the probability distribution is used to guide the individual to move toward the optimal solution. The algorithm of this device introduces an adaptive update coefficient α, so that the exploration ability of the algorithm is enhanced in the initial stage, and the utilization of the optimal solution is improved in the later stage, so that the accuracy and robustness of positioning can be further improved.

[0025] Preferably, if Figure 5 and Figure 6As shown, the telescopic mechanism 7 includes two symmetrically arranged light rods 10 correspondingly inserted into the strip hole 9; a telescopic cylinder 11 is arranged on the front of the electric disc 6, and the telescopic end of the telescopic cylinder 11 is connected to the light detector 8. A servo motor 12 is arranged on the back of the electric disc 6, and a screw 13 is connected to the output end of the servo motor 12, and a moving block 14 is threaded on the screw 13; light holes 15 are opened on both sides of the moving block 14; the light rods 10 are correspondingly inserted into the light holes 15. A connecting plate 16 is arranged on the light detector 8; a long strip-shaped moving groove 17 with a T-shaped cross section is opened on the connecting plate 16; the telescopic end of the telescopic cylinder 11 is slidably embedded in the moving groove 17. The electric disc 6 of the utility model is provided with a strip hole 9, wherein the light rod 10 in the telescopic mechanism 7 is inserted into the strip hole 9, and the servo motor 12 on the back side of the electric disc 6 can drive the light rod 10 to move up and down along the strip hole 9 through the action of the screw 13 and the moving rod, so as to facilitate the adjustment of the height of the light detector 8 and avoid obstruction. In the process of up and down lifting, since the telescopic end of the telescopic cylinder 11 needs to be connected with the light detector 8 to facilitate the recovery of the light detector 8 into the cavity 5, the utility model is provided with a connecting plate 16 on the light detector 8, and a moving groove 17 is opened on the connecting plate 16, and then the telescopic end of the telescopic cylinder 11 is slidably embedded in the moving groove 17, and at this time, the telescopic end can be set to a T-shaped structure that matches the moving groove 17, so that it has a limiting ability and can drive the light detector 8 to be recovered and extended, thereby through the sliding cooperation between the moving groove 17 and the telescopic end, the telescopic mechanism 7 can be connected to the light detector 8 when the height of the light detector 8 is adjusted. Therefore, the utility model can realize three operation modes of the light detector 8 , namely, rotation, extension and lifting, which can help the light detector 8 form different receiving angles to facilitate receiving the light signal of the LED light source 2 .

[0026] Preferably, the housing 3 is provided with a control button 20, a display screen 21 and a USB interface 22, and the control button 20, the display screen 21 and the USB interface 22 are electrically connected to the circuit board respectively. The control button 20 can set corresponding parameters for the optical detection and processing integrated machine 1, and the display screen 21 is used for operation and display. The optical detection and processing integrated machine 1 of the utility model is powered by a battery, and is also provided with a memory to store data, and the data can be output through the USB interface 22.

[0027] How it works

[0028] The LED light source of the utility model can be arranged at any position indoors, without the need for special deployment of LED arrangement, which improves the flexibility of the positioning device. The light detection and processing integrated machine 1 of the utility model adopts an integrated design of various components such as the light detector 8, and the light detector 8 is placed in the cavity 5 on the rear side of the shell 3, which helps to protect the light detector 8. When it is necessary to work, it is driven to extend by the telescopic mechanism 7, and the telescopic mechanism 7 is placed on the electric disc 6 at the bottom of the cavity 5. The horizontal angle of the light detector 8 can be adjusted by rotating the electric disc 6, and the light detector 8 can be raised and lowered by the operation of the servo motor 12, thereby realizing the three operating modes of rotation, extension and lifting of the light detector 8, so as to facilitate the light detector 8 to receive the distribution information of the LED light source 2, and finally the circuit board processes it and outputs the positioning data, thereby realizing indoor positioning.

Claims

1. A visible light positioning device based on irregular LED arrangement, comprising a light detection and processing integrated machine (1) and at least one LED light source (2), wherein the LED light source (2) is arranged at any position indoors; the light detection and processing integrated machine (1) is arranged on an object to be positioned, and the light detection and processing integrated machine (1) has a built-in circuit board; characterized in that: The optical detection and processing integrated machine (1) comprises a shell (3), the shell (3) is provided with a spiral hole (4) for installation and fixing; the rear side of the shell (3) is provided with a cavity (5); the bottom of the cavity (5) is provided with an electric disc (6), the electric disc (6) is provided with a telescopic mechanism (7), the telescopic mechanism (7) is provided with an optical detector (8), and the electric disc (6), the telescopic mechanism (7) and the optical detector (8) are all electrically connected to a circuit board.

2. The visible light positioning device based on irregular LED arrangement according to claim 1, characterized in that: The electric disc (6) is provided with two strip-shaped holes (9); the telescopic mechanism (7) comprises two symmetrically arranged light rods (10) correspondingly inserted into the strip-shaped holes (9); a telescopic cylinder (11) is provided on the front of the electric disc (6), and the telescopic end of the telescopic cylinder (11) is connected to the light detector (8).

3. The visible light positioning device based on irregular LED arrangement according to claim 2, characterized in that: A servo motor (12) is arranged on the back of the electric disc (6); the output end of the servo motor (12) is connected to a screw rod (13); a moving block (14) is threadedly provided on the screw rod (13); light holes (15) are provided on both sides of the moving block (14); and the light rod (10) is correspondingly arranged in the light hole (15).

4. The visible light positioning device for irregular LED arrangement according to claim 2, characterized in that: The light detector (8) is provided with a connecting plate (16); the connecting plate (16) is provided with a long moving groove (17) with a T-shaped cross section; the telescopic end of the telescopic cylinder (11) is slidably embedded in the moving groove (17).

5. The visible light positioning device for irregular LED arrangement according to claim 1, characterized in that: The four sides of the shell (3) are each provided with a plurality of spiral holes (4).

6. The visible light positioning device for irregular LED arrangement according to claim 1, characterized in that: The LED light source (2) is circular, and a mounting lug (18) is provided on the side of the LED light source (2).

7. The visible light positioning device for irregular LED arrangement according to claim 1, characterized in that: The LED light source (18) is provided with a magnetic fixing sheet (19).

8. The visible light positioning device for irregular LED arrangement according to claim 1, characterized in that: The housing (3) is provided with a control button (20), and the control button (20) is electrically connected to the circuit board.

9. The visible light positioning device for irregular LED arrangement according to claim 1, characterized in that: A display screen (21) is provided on the housing (3), and the display screen (21) is electrically connected to the circuit board.

10. The visible light positioning device for irregular LED arrangement according to claim 1, characterized in that: The housing (3) is provided with a USB interface (22), and the USB interface (22) is electrically connected to the circuit board.

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