Visible light positioning base station

Abstract

The utility model provides a visible light positioning base station, which relates to the technical field of visible light positioning and comprises a base station and a base, the base station and the base are movably connected through a gear adjusting module, a photoelectric detector module is arranged on the base station, and an IMU (Inertial Measurement Unit) module is arranged in the base station; a stepping motor module and a main control module are arranged in the base; the IMU module and the stepping motor module are both connected with the main control module; the photoelectric detector module is used for receiving a visible light positioning signal; the IMU module is used for acquiring current attitude information of the base station in real time and transmitting the current attitude information to the main control module; and the main control module is used for processing the visible light positioning signal and controlling the stepping motor module to drive the gear adjusting module in combination with the current attitude information so as to adjust the attitude of the base station. According to the utility model, the base station can be adjusted in real time according to the use scene and the positioning effect, and the flexibility and accuracy of visible light positioning are improved.

Description

Technical Field

[0001] This utility model relates to the field of visible light positioning technology, and specifically to a visible light positioning base station. Background Technology

[0002] Visible light positioning base stations are a type of practical device among positioning base stations. Existing positioning base stations generally consist of a positioning module and a receiver, with a relatively simple structure and function, resulting in significant limitations in application. Furthermore, currently used positioning base stations suffer from drawbacks in terms of flexibility and adjustability; ordinary positioning base stations have poor flexibility and are prone to positioning errors in visible light tilt positioning. Utility Model Content

[0003] The purpose of this utility model is to provide a visible light positioning base station to solve the problems of existing positioning base stations, such as simple structure, large usage limitations, lack of flexibility and adjustability. It can realize dynamic adjustment of positioning and flexible deployment of base stations, and has high positioning accuracy.

[0004] To achieve the above objectives, this utility model provides a visible light positioning base station, including a base platform and a base, which are movably connected by a gear adjustment module. A photodetector module is installed on the base platform, and an IMU module is installed inside the base platform. A stepper motor module and a main control module are installed inside the base platform.

[0005] Both the IMU module and the stepper motor module are connected to the main control module;

[0006] The photodetector module is used to receive visible light positioning signals; the IMU module is used to acquire the current attitude information of the base station in real time and transmit the current attitude information to the main control module; the main control module is used to process the visible light positioning signals and, in combination with the current attitude information, control the stepper motor module to drive the gear adjustment module to adjust the attitude of the base station.

[0007] According to the visible light positioning base station provided by this utility model, the attitude of the base includes the rotation angle of the base, and the rotation angle is between 60 degrees clockwise and 60 degrees counterclockwise along the direction perpendicular to the base.

[0008] According to the visible light positioning base station provided by this utility model, the stepper motor module includes a drive unit, a stepper motor, and an LED indicator unit; the drive unit is used to drive the stepper motor, and the LED indicator unit is used to indicate the working status of the stepper motor.

[0009] According to the present invention, a visible light positioning base station includes a gear adjustment module comprising a first gear, a second gear, and a third gear. The central shaft of the first gear is connected to the output end of a stepper motor. The upper part of the third gear is fixedly connected to the base, and the lower part of the third gear meshes with the second gear. The second gear meshes with the first gear.

[0010] According to the visible light positioning base station provided by this utility model, the stepper motor is a five-wire four-phase stepper motor.

[0011] According to the present invention, a visible light positioning base station includes a main control module comprising a processor, which is a microcontroller; a drive unit comprising a drive chip; an LED indicator unit comprising four LEDs; an IMU module comprising an IMU chip; and a photodetector module comprising a photodetector chip.

[0012] According to the present invention, a visible light positioning base station is provided, the microcontroller is STM32F103ZET6, the driver chip is ULN2003, the LED is IN4007, the IMU chip is MPU6050, and the photodetector chip is OPT101.

[0013] According to the present invention, a visible light positioning base station further includes a communication module; the communication module is connected to the main control module and is used to transmit visible light positioning signals to the main control module.

[0014] According to the present invention, a visible light positioning base station is provided, and the communication module includes a communication chip, the model of which is ESP32-WROOM.

[0015] According to the visible light positioning base station provided by this utility model, it also includes a power supply module; the power supply module is used to supply power to the photodetector module, communication module, main control module, IMU module and stepper motor module respectively.

[0016] The technical solution of this utility model has at least the following technical effects:

[0017] The visible light positioning base station provided by this utility model allows users to adjust the base station in real time according to the usage scenario and positioning effect during visible light positioning, improving the flexibility and accuracy of visible light positioning. Simultaneously, the visible light positioning base station also features an LED indicator unit on the base station, which can display the working status of the stepper motor module inside the base station, thereby ensuring the reliability of visible light positioning. It can perform reliable visible light positioning in different scenarios and can be adjusted according to the actual application scenario, enhancing positioning accuracy and solving the deficiency of insufficient flexibility in existing visible light positioning base stations. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] In the attached diagram:

[0020] Figure 1 This is a perspective view of the visible light positioning base station of this utility model;

[0021] Figure 2 This is a top view of the visible light positioning base station of this utility model;

[0022] Figure 3 This is a cross-sectional view of the visible light positioning base station of this utility model;

[0023] Figure 4 This is a cross-sectional view of the visible light positioning base station of this utility model from another angle;

[0024] Figure 5 This is a circuit diagram of the main control module of this utility model;

[0025] Figure 6 This is a circuit diagram of the driving unit of this utility model;

[0026] Figure 7 This is a circuit diagram of the LED indicator unit of this utility model;

[0027] Figure 8 This is a circuit diagram of the stepper motor of this utility model;

[0028] Figure 9 This is a circuit diagram of the IMU module of this utility model;

[0029] Figure 10 This is a circuit diagram of the photodetector module of this utility model;

[0030] Figure 11 This is a circuit structure diagram of the communication module of this utility model.

[0031] Reference numerals: Base 1, Base 2, Main control module 10, IMU module 20, Stepper motor 31, LED indicator unit 32, Drive unit 33, Gear adjustment module 40, Photodetector module 50, Communication module 60. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0033] The following description, in conjunction with the accompanying drawings, details some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0034] Please see Figure 1 , Figure 2 and Figure 3 This utility model provides a visible light positioning base station, including a base 1 and a base 2. The base 1 and the base 2 are movably connected by a gear adjustment module 40. The base 1 is provided with a photodetector module 50 and a communication module 60. The base 1 is provided with an IMU (Inertial Measurement Unit) module 20. The base 2 is provided with a stepper motor module, a main control module 10 and a power supply module (not shown).

[0035] The power supply module provides power to the photodetector module 50, the communication module 60, the main control module 10, the IMU module 20, and the stepper motor module. The main control module 10 is connected to the IMU module 20, the stepper motor module, and the communication module 60.

[0036] The photodetector module 50 is used to receive visible light positioning signals and transmit the received visible light positioning signals to the communication module 60; the communication module 60 sends the visible light positioning signals to the main control module 10; the IMU module 20 is used to acquire the current attitude information of the base station 1 in real time and transmit the current attitude information to the main control module 10; the main control module 10 processes the visible light positioning signals and, in combination with the current attitude information, controls the stepper motor module to drive the gear adjustment module 40 to adjust the attitude of the base station 1, thereby realizing the adaptive adjustment function of the visible light positioning base station.

[0037] It should be noted that the visible light positioning signal includes positioning information and light intensity information. After being transmitted to the communication module 60, it is then transmitted to the main control module 10 for data processing. Therefore, when deploying a visible light positioning base station, users can flexibly adjust the angle of the base station 1 according to environmental requirements to achieve high-precision positioning. At the same time, the visible light positioning base station can monitor environmental changes in real time and dynamically optimize positioning parameters, thereby ensuring positioning accuracy and stability.

[0038] In some embodiments, the orientation of the base 1 includes the rotation angle of the base 1, which is between 60 degrees clockwise and 60 degrees counterclockwise along the direction perpendicular to the base 1 (vertical direction).

[0039] In some embodiments, such as Figure 4 As shown, the gear adjustment module 40 includes a first gear, a second gear, and a third gear. The central shaft of the first gear is connected to the output end of the stepper motor 31. The upper part of the third gear is fixedly connected to the base 1, and the lower part of the third gear meshes with the second gear. The second gear meshes with the first gear, so that when the stepper motor 31 rotates, it drives the first gear to rotate, and then through the transmission of the second gear, it drives the third gear to rotate, thereby causing the base 1 to rotate and adjust the posture of the base 1. By controlling the first gear through the stepper motor 31, the posture of the base 1 can be adjusted, thereby improving the positioning flexibility and accuracy.

[0040] Specifically, Figure 5 The circuit structure diagram of the main control module provided in this embodiment is as follows: Figure 5 As shown, the main control module 10 includes at least a processor and external circuitry; the processor is a microcontroller. In this embodiment, the microcontroller is an STM32F103ZET6 microcontroller.

[0041] The microcontroller's Reset pin is connected to a parallel circuit formed by the second capacitor C2 and the reset button SW1. The parallel circuit of the second capacitor C2 and the reset button SW1 is connected in series with the second resistor R2 and then connected to a +3.3V DC power supply. The other end of the second capacitor C2 is grounded (GND). The microcontroller's VSS pin is connected to a +5V DC power supply, and the microcontroller's GND pin is grounded.

[0042] The microcontroller's PF2 pin is connected to the IMU chip's INT pin, the microcontroller's PF4 pin is connected to the IMU chip's SCL pin, and the microcontroller's PF6 pin is connected to the IMU chip's SDA pin. The microcontroller's PE0 pin is connected to the driver chip's IN1 pin, the microcontroller's PE2 pin is connected to the driver chip's IN2 pin, the microcontroller's PE4 pin is connected to the driver chip's IN3 pin, and the microcontroller's PE6 pin is connected to the driver chip's IN4 pin. The microcontroller's RX terminal is connected to the communication chip's TXD0 terminal, and the microcontroller's TX terminal is connected to the communication chip's RXD0 terminal.

[0043] In this embodiment, the stepper motor module includes a drive unit 33, a stepper motor 31, an LED indicator unit 32, and external circuitry; wherein, both the drive unit 33 and the stepper motor 31 are mounted on the base plate of the base 2. The drive unit 33 is used to drive the stepper motor 31, and the LED indicator unit is used to indicate the working status of the stepper motor 31. If the stepper motor 31 is working normally, the LED indicator unit 32 will remain constantly lit.

[0044] Figure 6 The circuit structure diagram of the driving unit provided in this embodiment is as follows: Figure 6 As shown, the driving unit 33 includes a driving chip and external circuitry. This embodiment uses the ULN2003 driving chip as an example.

[0045] The COM terminal of the driver chip is connected to a +5V DC power supply and then grounded after connecting to the first capacitor C1; the GND terminal of the driver chip is grounded; the IN1 pin of the driver chip is connected to the PE0 pin of the microcontroller, the IN2 pin is connected to the PE2 pin, the IN3 pin is connected to the PE4 pin, and the IN4 pin is connected to the PE6 pin. The OUT1 pin of the driver chip is connected to D1 of the LED indicator unit 32, the OUT2 pin is connected to D2, the OUT3 pin is connected to D3, and the OUT4 pin is connected to D4.

[0046] Figure 7 This is a circuit diagram of the LED indicator unit provided in this embodiment. In this embodiment, the LED indicator unit 32 includes four LEDs (D1, D2, D3, D4) and external circuitry. This embodiment uses the LED indicator unit 32 to reflect the operating status of the stepper motor 31, and the on / off state of the LEDs indicates whether the stepper motor 31 is working normally.

[0047] This embodiment uses the IN4007 LED as an example. When all four LEDs are lit, it indicates that the stepper motor 31 is in normal working condition. Since the stepper motor is connected to the driver end by four wires, the four LEDs respectively indicate whether the wires are properly powered. If all four LEDs are lit, the stepper motor 31 is working normally. When one LED is off, it indicates that the corresponding driver end is abnormal, and therefore the stepper motor 31 is in an abnormal working state.

[0048] Figure 8 The circuit diagram of the stepper motor provided in this embodiment is shown. In this embodiment, the stepper motor 31 is a five-wire four-phase stepper motor. Terminal A of the stepper motor 31 is connected to a +5V DC power supply, terminal B of the stepper motor 31 is connected to D1 of the LED indicator unit 32, terminal C of the stepper motor 31 is connected to D2 of the LED indicator unit 32, terminal D of the stepper motor 31 is connected to D3 of the LED indicator unit 32, and terminal E of the stepper motor is connected to D4 of the LED indicator unit 32.

[0049] Figure 9 The circuit diagram of the IMU module provided in this embodiment is as follows: Figure 9As shown, the IMU module 20 includes an IMU chip and external circuitry. This embodiment uses the MPU6050 chip as an example. The VCC pin of the IMU chip is connected to a +3.3V DC power supply, the INT pin of the IMU chip is connected to the PF2 pin of the microcontroller, the SCL pin of the IMU chip is connected to the PF4 pin of the microcontroller, the SDA pin of the IMU chip is connected to the PF6 pin of the microcontroller, and the GND pin of the IMU chip is grounded.

[0050] Figure 10 The circuit diagram of the photodetector module provided for this embodiment is shown below. Figure 10 As shown, the photodetector module 50 includes a photodetector chip and external circuitry. This embodiment uses the OPT101 chip as an example. The VS pin of the photodetector chip is connected to a +3.3V DC power supply, the Output pin of the photodetector chip is connected to the IO22 pin of the communication chip, the Feedback pin of the photodetector chip is connected to the Output pin of the photodetector chip, the -V pin of the photodetector chip is grounded, and the Common and NC pins of the photodetector chip are grounded.

[0051] Figure 11 The circuit diagram of the communication module provided for this embodiment is shown below. Figure 11 As shown, the communication module includes a communication chip and external circuitry. This embodiment uses the ESP32-WROOM chip as an example for illustration.

[0052] The 3V3 terminal of the communication chip is connected to a +3.3V DC power supply, the GND terminal of the communication chip is connected to ground, the NC terminal of the communication chip is connected to ground, the RXD0 terminal of the communication chip is connected to the TX pin of the microcontroller, the TXD0 terminal of the communication chip is connected to the RX pin of the microcontroller, and the IO22 terminal of the communication chip is connected to the Output pin of the photodetector chip.

[0053] In summary, the visible light positioning base station provided by this invention allows users to flexibly adjust the base's orientation according to environmental requirements during deployment, achieving high-precision positioning. Furthermore, the visible light positioning base station integrates an IMU module, enabling real-time monitoring of environmental changes and dynamic optimization of positioning parameters, thereby ensuring positioning accuracy and stability. By intelligently adjusting the base's orientation to adapt to environmental demands, positioning errors are effectively reduced, overcoming the shortcomings of insufficient flexibility, and adapting to complex and changing environments, ensuring the accuracy and reliability of positioning.

[0054] Other embodiments of the present invention will readily occur to those skilled in the art upon consideration of the specification and practice of the embodiments disclosed herein. The present invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. It should be understood that the present invention is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the present invention is limited only by the appended claims.

Claims

1. A visible light positioning base station, characterized in that, It includes a base and a base, which are movably connected by a gear adjustment module. A photodetector module is installed on the base, and an IMU module is installed inside the base. A stepper motor module and a main control module are installed inside the base. Both the IMU module and the stepper motor module are connected to the main control module. The photodetector module is used to receive visible light positioning signals; the IMU module is used to acquire the current attitude information of the base station in real time and transmit the current attitude information to the main control module; the main control module is used to process the visible light positioning signals and, in combination with the current attitude information, control the stepper motor module to drive the gear adjustment module to adjust the attitude of the base station.

2. A visible light positioning base station according to claim 1, characterized in that, The orientation of the base includes the rotation angle of the base, which is between 60 degrees clockwise and 60 degrees counterclockwise along a direction perpendicular to the base.

3. A visible light positioning base station according to claim 1, characterized in that, The stepper motor module includes a drive unit, a stepper motor, and an LED indicator unit; the drive unit is used to drive the stepper motor, and the LED indicator unit is used to indicate the working status of the stepper motor.

4. A visible light positioning base station according to claim 3, characterized in that, The gear adjustment module includes a first gear, a second gear, and a third gear. The central shaft of the first gear is connected to the output end of the stepper motor. The upper part of the third gear is fixedly connected to the base. The lower part of the third gear meshes with the second gear. The second gear meshes with the first gear.

5. A visible light positioning base station according to claim 4, characterized in that, The stepper motor is a five-wire four-phase stepper motor.

6. A visible light positioning base station according to claim 5, characterized in that, The main control module includes a processor, which is a microcontroller; the driving unit includes a driving chip; the LED indicator unit includes four LEDs; the IMU module includes an IMU chip; and the photodetector module includes a photodetector chip.

7. A visible light positioning base station according to claim 6, characterized in that, The microcontroller is an STM32F103ZET6, the driver chip is a ULN2003, the LED is an IN4007, the IMU chip is an MPU6050, and the photodetector chip is an OPT101.

8. A visible light positioning base station according to claim 7, characterized in that, It also includes a communication module; the communication module is connected to the main control module, and the communication module is used to transmit the visible light positioning signal to the main control module.

9. A visible light positioning base station according to claim 8, characterized in that, The communication module includes a communication chip, the model of which is ESP32-WROOM.

10. A visible light positioning base station according to claim 8, characterized in that, It also includes a power supply module; the power supply module is used to supply power to the photodetector module, communication module, main control module, IMU module and stepper motor module respectively.

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