Visible light locator

Abstract

The utility model relates to the technical field of visible light communication, in particular to a visible light locator. The visible light positioner comprises a visible light positioning receiving device and a visible light positioning transmitting device provided with a plurality of light-emitting components; the light-emitting surfaces of the light-emitting components face different directions; light-emitting components of the visible light positioning and emitting device are used for emitting visible light signals with different frequencies; and the visible light positioning receiving device is used for receiving the visible light signal and realizing a positioning function according to the visible light signal. By using the design of a plurality of planar light sources with different orientations, visible light signals are emitted at different frequencies, and the functions of positioning, communication and illumination are realized by using the visible light signals. And a light source which is easy to obtain in the market and does not accord with Lambert radiation can be selected, and relatively accurate indoor positioning performance can also be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of visible light communication, in particular to a visible light locator. Background Art

[0002] Visible light positioning (VLP) technology based on visible light communication (VLC) can achieve high-precision positioning in indoor environments without generating electromagnetic interference. It has broad application prospects in indoor positioning, indoor navigation, the Internet of Things and other fields.

[0003] At present, the transmitter devices used in most visible light positioning systems are designed with LED wicks that conform to Lambert radiation. However, few LED wicks, light sources and lamps on the market actually conform to Lambert radiation. As a result, if the visible light positioning system designed according to the standard Lambert radiation LED light source uses the non-Lambertian radiation LED light source on the market, the system and the corresponding algorithm may not work. Even if it works, the positioning performance accuracy is very poor. At the same time, the exposed LED wick that conforms to Lambert radiation is very dazzling, affecting the lighting effect of the lamp.

[0004] The above contents are only used to assist in understanding the technical solution of the present utility model and do not constitute an admission that the above contents are prior art. Utility Model Content

[0005] The main purpose of the utility model is to provide a visible light locator, aiming to solve the technical problem that the light sources used for visible light positioning in the prior art must conform to Lambertian radiation, resulting in that most light sources on the market cannot be accurately positioned.

[0006] To achieve the above-mentioned purpose, the utility model provides a visible light locator, which comprises: a visible light positioning receiving device and a visible light positioning emitting device provided with a plurality of light-emitting components;

[0007] The light-emitting surfaces of the light-emitting components are oriented in different directions;

[0008] Each light-emitting component of the visible light positioning transmitting device is used to emit visible light signals of different frequencies;

[0009] The visible light positioning receiving device is used to receive the visible light signal and implement a positioning function according to the visible light signal.

[0010] Optionally, the visible light positioning emitting device further comprises: a visible light source driving circuit, a mounting seat and side panels having the same number as the light-emitting components;

[0011] The side panels are connected to form a shell of the launch device, which is arranged on the mounting seat;

[0012] Each of the light-emitting components is mounted on the side plate by means of screws and nuts, and is electrically connected to the visible light source driving circuit.

[0013] Optionally, the visible light source driving circuit comprises: a communication module, a signal generating module and switch control modules having the same number as the light-emitting components;

[0014] The first end of the communication module is connected to the terminal, the second end of the communication module is connected to the input end of the signal generating module, the output end of the signal generating module is respectively connected to the first end of each of the switch control modules, and the second end of each of the switch control modules is connected to the corresponding light-emitting component;

[0015] The communication module is used to receive the setting signal output by the terminal and transmit the setting signal to the signal generating module;

[0016] The signal generating module is used to generate a light emitting control signal of a corresponding frequency to the switch control module according to the received setting signal;

[0017] The switch control module is used to light up the corresponding light-emitting component at a corresponding frequency according to the light-emitting control signal.

[0018] Optionally, the switch control module includes: a switch tube and a first current limiting resistor;

[0019] The control end of the switch tube is connected to the output end of the signal generating module, the input end of the switch tube is connected to the negative electrode of the light-emitting component, the positive electrode of the light-emitting component is connected to one end of the first current limiting resistor, the other end of the first current limiting resistor is connected to the power supply, and the output end of the switch tube is grounded.

[0020] Optionally, the visible light source driving circuit further includes: at least one LDO linear regulator;

[0021] The input end of each LDO linear regulator is connected to the power supply, and the output end is connected to the corresponding communication module, the signal generating module and the switch control module.

[0022] Optionally, the visible light source driving circuit further includes: an indication module;

[0023] The indication module is arranged between the power supply and the input end of each of the LDO linear regulators;

[0024] The indication module is used to indicate the power supply status of each LDO linear regulator.

[0025] Optionally, the indication module comprises: a self-locking switch, a second current limiting resistor and an indicator light;

[0026] The input end of the self-locking switch is connected to the input end of the LDO linear regulator, the output end of the self-locking switch is connected to the first end of the second current limiting resistor, the second end of the second current limiting resistor is connected to the positive electrode of the indicator light, and the negative electrode of the indicator light is grounded.

[0027] Optionally, the housing formed by connecting the side panels is in a regular pyramid structure, and the light-emitting surfaces of the light-emitting components correspond to different directions of the side surfaces of the regular pyramid.

[0028] Optionally, the visible light positioning transmitting device includes: a POE switch and a POE splitter;

[0029] The POE switch is connected to the POE separator via a network cable, and the POE separator is also connected to the visible light source driving circuit.

[0030] Optionally, the visible light positioning receiving device includes: a photodiode, a transimpedance amplifier, a sampling single chip microcomputer and a host computer;

[0031] The photodiode is connected to the input end of the transimpedance amplifier, the output end of the transimpedance amplifier is connected to the sampling single-chip microcomputer, and the sampling single-chip microcomputer is also connected to the host computer.

[0032] The technical solution of the utility model proposes a visible light locator. The visible light locator includes: a visible light positioning receiving device and a visible light positioning emitting device provided with a plurality of light-emitting components; the light-emitting surfaces of the light-emitting components are oriented in different directions; the light-emitting components of the visible light positioning emitting device are used to emit visible light signals of different frequencies; the visible light positioning receiving device is used to receive the visible light signal and realize the positioning function according to the visible light signal. By using a plurality of planar light sources with different orientations, visible light signals are emitted at different frequencies, and the visible light signals are used to realize the positioning, communication and lighting functions. And the light source that does not conform to the Lambertian radiation that is easily available on the market can be selected, and more accurate indoor positioning performance can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0034] Figure 1This is a schematic structural diagram of the first embodiment of the visible light locator of the utility model;

[0035] Figure 2 It is a front view schematic diagram of a visible light positioning emitting device in the second embodiment of the visible light locator of the utility model;

[0036] Figure 3 It is a top view schematic diagram of the visible light positioning emitting device in the second embodiment of the visible light locator of the utility model;

[0037] Figure 4 This is a circuit connection diagram of a visible light source driving circuit in the second embodiment of the visible light locator of the utility model;

[0038] Figure 5 This is a schematic diagram of a scene of a visible light emitting device in the second embodiment of the visible light locator of the utility model;

[0039] Figure 6 This is a connection diagram of a visible light positioning receiving device in the third embodiment of the visible light locator of the utility model;

[0040] Figure 7 This is a schematic diagram of a scene of a visible light positioning receiving device in the third embodiment of the visible light locator of the utility model;

[0041] Figure 8 This is a schematic diagram of the placement of the photodiode when it is horizontal in the third embodiment of the visible light locator of the utility model;

[0042] Fig. 9 This is an error distribution diagram when the photodiode is horizontal in the third embodiment of the visible light locator of the utility model;

[0043] Fig.10 This is a schematic diagram of the placement of the photodiode in the third embodiment of the visible light locator of the utility model when it is tilted 15 degrees;

[0044] Fig.11 This is the error distribution diagram when the photodiode in the third embodiment of the visible light locator of the utility model is tilted by 15 degrees.

[0045] Description of Figure Numbers:

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[0048] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0049] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0050] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0051] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0052] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0053] Reference Figure 1 , Figure 1 The first embodiment of the visible light locator of the utility model is shown in FIG. The first embodiment of the visible light locator of the utility model is provided.

[0054] In this embodiment, the visible light locator comprises: a visible light positioning receiving device 1 and a visible light positioning emitting device 2 provided with a plurality of light emitting components 20. The light emitting surfaces of the light emitting components 20 face in different directions.

[0055] It should be noted that each light-emitting component 20 of the visible light positioning transmitting device 2 is used to emit visible light signals of different frequencies; the visible light positioning receiving device 1 is used to receive the visible light signal and realize the positioning function according to the visible light signal.

[0056] It should be understood that the visible light positioning transmitting device can control each light-emitting component in different directions to emit visible light signals at different frequencies according to the communication data sent by the user terminal. The user terminal can send communication data to the visible light positioning transmitting device through network transmission, including wired transmission (such as Ethernet transmission or optical fiber transmission) and wireless transmission (such as Bluetooth transmission or WIFI transmission). The visible light positioning receiving device can receive visible light signals of different frequencies emitted by each light-emitting component, determine the light-emitting component that emits the visible light signal according to the corresponding frequency, and process the visible light signals of different light-emitting components through a trained neural network model to obtain indoor positioning coordinates.

[0057] Furthermore, the light emitting components of the visible light positioning emitting device may use LED lamps that do not conform to standard Lambertian radiation, and the number of LED lamps should be greater than or equal to three, preferably four. Among them, a light source that conforms to Lambertian radiation refers to a light source whose radiation energy density per unit area, unit solid angle and unit frequency range is proportional to the square of the frequency under thermal equilibrium, and presents a specific radiation distribution law in the spectrum.

[0058] It should be noted that at least three LED lights that do not meet the standard Lambertian radiation are used to emit visible light signals in different directions at different frequencies. Visible light positioning can identify the LED lights that emit visible light signals according to the frequency, and use the trained neural network model to obtain the indoor positioning coordinates. The training of the neural network model can be carried out by sampling a batch of light signal spectrum amplitudes at known coordinate points as training data for model training.

[0059] This embodiment proposes a visible light locator. The visible light locator includes: a visible light positioning receiving device and a visible light positioning emitting device provided with a plurality of light-emitting components; the light-emitting surfaces of the light-emitting components are oriented in different directions; the light-emitting components of the visible light positioning emitting device are used to emit visible light signals of different frequencies; the visible light positioning receiving device is used to receive the visible light signal and realize the positioning function according to the visible light signal. By using a plurality of planar light sources with different orientations, visible light signals are emitted at different frequencies, and the visible light signals are used to realize the positioning, communication and lighting functions. And it is possible to select light sources that are easily available on the market and do not conform to Lambertian radiation, and also to achieve more accurate indoor positioning performance.

[0060] Reference Figure 2 and Figure 3 , Figure 2 It is a front view schematic diagram of a visible light positioning emitting device in the second embodiment of the visible light locator of the utility model; Figure 3The second embodiment of the visible light locator of the utility model is proposed based on the first embodiment of the visible light locator mentioned above.

[0061] In this embodiment, the visible light positioning emitting device 2 also includes: a visible light source driving circuit 21, a mounting seat 22 and side panels 23 having the same number as the light-emitting components 20; each of the side panels 23 is connected to form an outer shell of the emitting device, which is arranged on the mounting seat 22; each of the light-emitting components 20 is installed on the side panels 23 by means of screws and nuts, and is electrically connected to the visible light source driving circuit 21.

[0062] It should be noted that the mounting base is installed on the ceiling, and the visible light source driving circuit 21 can receive communication data sent by the user terminal, and control each light-emitting component to generate a visible light signal at a corresponding frequency according to the signal about the frequency setting contained in the communication data. At the same time, the visible light signal generated by the light-emitting component can also be used for indoor lighting.

[0063] Furthermore, the number of the side panels is the same as the number of the light-emitting components, which should be greater than or equal to 3, preferably 4. The housing formed by connecting the side panels is a regular pyramid structure (preferably a regular quadrangular pyramid), and the light-emitting surfaces of the LED lamps correspond to different directions of the side surfaces of the regular pyramid.

[0064] It should be noted that the material of the side panels can be cardboard or plastic board, and the light-emitting surface of each LED lamp is a circular frosted surface.

[0065] Reference Figure 4 , Figure 4 This is a circuit connection diagram of the visible light source driving circuit in the second embodiment of the visible light locator of the utility model. The visible light source driving circuit 21 includes: a communication module 211, a signal generating module 212, and switch control modules 213, the same number as the light-emitting components 20. The first end of the communication module 211 is connected to the terminal, the second end of the communication module 211 is connected to the input end of the signal generating module 212, the output end of the signal generating module 212 is respectively connected to the first end of each switch control module 213, and the second end of each switch control module 213 is connected to the corresponding light-emitting component 20.

[0066] It should be noted that the communication module 211 can be used to receive the setting signal output by the terminal and transmit the setting signal to the signal generating module 212; the signal generating module 212 can be used to generate a light control signal of a corresponding frequency to the switch control module 213 according to the received setting signal; the switch control module 213 can be used to light up the corresponding light-emitting component 20 at a corresponding frequency according to the light control signal.

[0067] The terminal may be a terminal device used by a user (e.g., a tablet computer, a notebook, a mobile phone, etc.), and the setting signal may be a communication data signal containing frequency information sent by the terminal. The light-emitting control signal may be a PWM signal, and the signal generating module generates an electrical signal for controlling the light-emitting component to emit visible light according to the frequency information after receiving and parsing the frequency information in the setting signal.

[0068] It should be understood that the number of the switch control modules is the same as the number of the light-emitting components, that is, any switch control module controls a corresponding light-emitting component according to the frequency information. The communication module can be a wired communication module (Ethernet and optical fiber module) or a wireless communication module (Bluetooth and WIFI module). In this embodiment, an Ethernet module can be selected to realize data communication with the terminal. The signal generating module can be an electronic device that can parse frequency data and generate a PWM waveform accordingly. For example, a high-speed single-chip microcomputer, a microcontroller (Micro-controller Unit, MCU) or a digital signal processor (Digital Signal Processing, DSP) can be selected. In this embodiment, a high-speed single-chip microcomputer can be selected as the signal generating module. The high-speed single-chip microcomputer generates PWM control signals corresponding to different light-emitting components through multiple output pins. The high-speed single-chip microcomputer and the above-mentioned Ethernet module can be connected via a high-speed serial bus.

[0069] Furthermore, the switch control module 213 includes: a switch tube Q1 and a first current limiting resistor R1. The control end of the switch tube Q1 is connected to the output end of the signal generating module 212, the input end of the switch tube Q1 is connected to the cathode of the light emitting component 20, the anode of the light emitting component 20 is connected to one end of the first current limiting resistor R1, the other end of the first current limiting resistor R1 is connected to the power supply, and the output end of the switch tube Q1 is grounded.

[0070] It should be noted that the switch tube Q1 can be a high-frequency transistor or a high-speed field effect tube. When the control end of the switch tube Q1 (i.e., the base of the high-frequency transistor or the gate of the high-speed field effect tube) receives the high-level switch control signal, the power supply is turned on as the power supply circuit of the light-emitting component, and the light-emitting component is lit. When the control end of the switch tube Q1 (i.e., the base of the high-frequency transistor or the gate of the high-speed field effect tube) receives the low-level switch control signal, the power supply is turned off as the power supply circuit of the light-emitting component, and the light-emitting component is extinguished. By setting the first current limiting resistor R1 at the input end of the switch tube Q1 (i.e., the collector of the high-frequency transistor or the drain of the high-speed field effect tube), the LED lamp can work in a constant voltage and constant current state.

[0071] Furthermore, the visible light source driving circuit 21 further includes: at least one LDO linear regulator U1. The input end of each LDO linear regulator U1 is connected to the power supply, and the output end is connected to the corresponding communication module 211, the signal generating module 212 and the switch control module 213.

[0072] It should be noted that the LDO linear regulator U1 is used to convert the voltage of the power supply into the power supply voltage for the Ethernet module (communication module 211) and the signal generating module 212 for power supply, and is also used to power each of the LED lamps (light-emitting components 20).

[0073] Furthermore, the visible light source driving circuit further includes: an indication module 214; the indication module 214 is arranged between the power supply and the input end of each of the LDO linear regulators U1.

[0074] It should be noted that the indication module is used to indicate the power supply status of each LDO linear regulator. When the voltage of the power supply is abnormal, which may cause the LDO linear regulator to fail to supply power to each functional module, an alarm indication can be issued, for example, an alarm sound or an alarm light can be used to indicate the power supply status of the LDO linear regulator.

[0075] Furthermore, the indication module 214 includes: a self-locking switch K1, a second current limiting resistor R2 and an indicator light L1. The input end of the self-locking switch K1 is connected to the input end of the LDO linear regulator U1, the output end of the self-locking switch K1 is connected to the first end of the second current limiting resistor R2, the second end of the second current limiting resistor R2 is connected to the positive electrode of the indicator light L1, and the negative electrode of the indicator light L1 is grounded.

[0076] It should be noted that after the self-locking switch is closed, the power supply circuit from the power supply to the indicator light always remains connected. When the voltage of the power supply drops to an abnormal state, the indicator light L1 will go out. When the voltage of the power supply is in a normal working state, the indicator light L1 will light up.

[0077] Reference Figure 5 , Figure 5 The schematic diagram of the scene of the visible light emitting device in the second embodiment of the visible light locator of the utility model. The visible light positioning emitting device 2 includes: a POE switch 24 and a POE separator 25. The POE switch 24 is connected to the POE separator 25 via a network cable, and the POE separator 25 is also connected to the visible light source driving circuit 21.

[0078] It should be noted that the POE switch can be a switch that uses an Ethernet cable to transmit power, and can simultaneously transmit communication data signals and power supply signals on an Ethernet cable. The POE separator can be an electronic device that separates the communication signal and the power supply signal in the Ethernet cable. The POE separator can transmit the setting signal transmitted by the terminal to the switch to the signal generating module, and transmit the power supply signal to the LDO linear regulator at the same time.

[0079] In this embodiment, a transmitting device composed of a visible light source driving circuit, a mounting base and side panels with the same number as the light-emitting components is used to enable multiple light-emitting components to generate visible light signals at different frequencies. A communication module is set to receive the setting signal output by the terminal, and transmit the setting signal to the signal generating module. The signal generating module generates a light-emitting control signal of a corresponding frequency to the switch control module according to the received setting signal. The switch control module is used to light up the corresponding light-emitting component at a corresponding frequency according to the light-emitting control signal. Users can use the control of multiple light-emitting components to emit visible light signals at different frequencies for positioning. In addition, LED lamps that do not conform to Lambertian radiation can be selected as light sources, and more accurate indoor positioning performance can also be achieved.

[0080] Reference Figure 6 and Figure 7 , Figure 6 This is a connection diagram of a visible light positioning receiving device in the third embodiment of the visible light locator of the utility model; Figure 7 This is a schematic diagram of a scene of a visible light positioning receiving device in the third embodiment of the visible light locator of the utility model. The third embodiment of the visible light locator of the utility model is proposed based on the above embodiments of the visible light locator.

[0081] It should be noted that the visible light positioning receiving device 1 includes: a photodiode 11, a transimpedance amplifier 12, a sampling microcontroller 13 and a host computer 14; the photodiode 11 is connected to the input end of the transimpedance amplifier 12, the output end of the transimpedance amplifier 12 is connected to the sampling microcontroller 13, and the sampling microcontroller 13 is also connected to the host computer 14.

[0082] It should be noted that the photodiode can respond to the visible light signal generated by the visible light positioning transmitting device, generate a corresponding collection current signal, and convert the collection current signal into a voltage signal through a transimpedance amplifier and input it into a sampling microcontroller, and then transmit it to the host computer for processing using a preset built-in program. The optical signal spectrum amplitudes of the N LED lights (where N is the number of LED lights) are obtained, and then divided by two to obtain N(N-1) / 2 received signal strength ratio values ​​(Received Signal Strength Ratio, RSSR). The above RSSR value is sent to the trained neural network model to obtain the estimated coordinates.

[0083] Reference Figure 8 and Fig. 9 , Figure 8 This is a schematic diagram of the placement of the photodiode when it is horizontal in the third embodiment of the visible light locator of the utility model; Fig. 9 This is the error distribution diagram when the photodiode is horizontal in the third embodiment of the visible light locator of the utility model. In a possible implementation, the visible light positioning transmitting device is installed on the ceiling, 3.14 meters from the floor, and the photodiode in the visible light positioning receiving device is 1 meter from the floor. The optical signal spectrum amplitude in a square area of ​​4 meters by 4 meters centered on the LED light projection can be collected. When the photodiode is placed parallel to the ground, the average positioning error (Location Error, LE) of the estimated coordinates obtained using the neural network model is 3.14 centimeters, and the maximum positioning error is 11.35 centimeters.

[0084] Further, refer to Fig.10 and Fig.11 , Fig.10 This is a schematic diagram of the placement of the photodiode in the third embodiment of the visible light locator of the utility model when it is tilted 15 degrees; Fig.11 This is the error distribution diagram of the third embodiment of the visible light locator of the utility model when the photodiode is tilted 15 degrees. When the photodiode is placed at an inclination of 15 degrees to the ground, the average positioning error of the coordinates estimated by the neural network model is 11.92 cm, and the maximum LE is 31.62 cm.

[0085] In this embodiment, a visible light positioning receiving device composed of a high-speed photodiode, a transimpedance amplifier, a sampling microcontroller and a host computer is used to sample and process the visible light signals generated by each light-emitting component, and the indoor scene positioning coordinates are obtained according to the neural network model. Indoor positioning can be achieved using ordinary LED lights on the market, but the positioning performance will decrease as the tilt angle of the sampling photodiode increases, but it is still maintained within the range of positioning error.

[0086] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A visible light locator, characterized in that: The visible light locator comprises: a visible light positioning receiving device and a visible light positioning emitting device provided with a plurality of light-emitting components; The light-emitting surfaces of the light-emitting components are oriented in different directions; Each light-emitting component of the visible light positioning transmitting device is used to emit visible light signals of different frequencies; The visible light positioning receiving device is used to receive the visible light signal and implement a positioning function according to the visible light signal.

2. The visible light locator according to claim 1, characterized in that: The visible light positioning emitting device further comprises: a visible light source driving circuit, a mounting seat and side panels having the same number as the light-emitting components; The side panels are connected to form a shell of the launch device, which is arranged on the mounting seat; Each of the light-emitting components is mounted on the side plate by means of screws and nuts, and is electrically connected to the visible light source driving circuit.

3. The visible light locator according to claim 2, characterized in that: The visible light source driving circuit comprises: a communication module, a signal generating module and switch control modules having the same number as the light-emitting components; The first end of the communication module is connected to the terminal, the second end of the communication module is connected to the input end of the signal generating module, the output end of the signal generating module is respectively connected to the first end of each of the switch control modules, and the second end of each of the switch control modules is connected to the corresponding light-emitting component; The communication module is used to receive the setting signal output by the terminal and transmit the setting signal to the signal generating module; The signal generating module is used to generate a light emitting control signal of a corresponding frequency to the switch control module according to the received setting signal; The switch control module is used to light up the corresponding light-emitting component at a corresponding frequency according to the light-emitting control signal.

4. The visible light locator according to claim 3, characterized in that: The switch control module includes: a switch tube and a first current limiting resistor; The control end of the switch tube is connected to the output end of the signal generating module, the input end of the switch tube is connected to the negative electrode of the light-emitting component, the positive electrode of the light-emitting component is connected to one end of the first current limiting resistor, the other end of the first current limiting resistor is connected to the power supply, and the output end of the switch tube is grounded.

5. The visible light locator according to claim 3, characterized in that: The visible light source driving circuit further includes: at least one LDO linear regulator; The input end of each LDO linear regulator is connected to the power supply, and the output end is connected to the corresponding communication module, the signal generating module and the switch control module.

6. The visible light locator according to claim 5, characterized in that: The visible light source driving circuit further includes: an indication module; The indication module is arranged between the power supply and the input end of each of the LDO linear regulators; The indication module is used to indicate the power supply status of each LDO linear regulator.

7. The visible light locator according to claim 6, characterized in that: The indication module comprises: a self-locking switch, a second current limiting resistor and an indicator light; The input end of the self-locking switch is connected to the input end of the LDO linear regulator, the output end of the self-locking switch is connected to the first end of the second current limiting resistor, the second end of the second current limiting resistor is connected to the positive electrode of the indicator light, and the negative electrode of the indicator light is grounded.

8. The visible light locator according to claim 2, characterized in that: The outer shell formed by connecting the side panels is in a regular pyramid structure, and the light-emitting surfaces of the light-emitting components correspond to different directions of the side surfaces of the regular pyramid.

9. The visible light locator according to claim 8, characterized in that: The visible light positioning transmitting device comprises: a POE switch and a POE separator; The POE switch is connected to the POE separator via a network cable, and the POE separator is also connected to the visible light source driving circuit.

10. The visible light locator according to claim 1, characterized in that: The visible light positioning receiving device comprises: a photodiode, a transimpedance amplifier, a sampling single chip microcomputer and a host computer; The photodiode is connected to the input end of the transimpedance amplifier, the output end of the transimpedance amplifier is connected to the sampling single-chip microcomputer, and the sampling single-chip microcomputer is also connected to the host computer.

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