Indoor positioning device based on three-axis antenna Bluetooth signal coverage

Abstract

The utility model provides an indoor positioning device based on three-axis antenna Bluetooth signal coverage, which comprises a three-axis Bluetooth module, the three-axis Bluetooth module comprises an X-axis Bluetooth module, a Y-axis Bluetooth module and a Z-axis Bluetooth module which mutually form an included angle of 90 degrees in a space coordinate system, and the Bluetooth module of each axis is respectively arranged on a PCB (printed circuit board); the distances between the centers of the PCBs of the Bluetooth modules of all the shafts and the original point of the space coordinate system where the PCBs are located are equal, and the distances are smaller than the width of the PCBs. The three-axial Bluetooth module layout structure is designed and points to three different axial directions of the X axis, the Y axis and the Z axis at the same time, so that the signal coverage of the Bluetooth beacon in the space is more uniform, the signals can be uniformly transmitted in the whole space and covered in all directions, the Ethernet is adopted for continuous power supply, frequent battery replacement and maintenance are not needed, and the cost is reduced. The expandability of the positioning system is improved, and Bluetooth indoor positioning with uniform signal coverage is realized at multiple angles and in a whole space.

Description

Technical Field

[0001] The utility model relates to the field of wireless communication technology, in particular, to the field of indoor positioning technology and Internet of Things (IoT) application technology; specifically, it relates to an indoor positioning device based on three-axis antenna Bluetooth signal coverage. Background Art

[0002] With the development of the Internet of Things (IoT), Bluetooth-based indoor positioning systems have gained widespread application. Due to its low power consumption, relatively low cost, and ease of deployment, Bluetooth positioning technology has become an important solution for indoor navigation, asset tracking, personnel management, and other scenarios.

[0003] Existing Bluetooth positioning technology mainly relies on Bluetooth beacons to transmit signals and estimates the location of the receiving device based on the signal strength detected by the receiving device.

[0004] In current indoor positioning systems, Bluetooth beacon antennas typically use a uniaxial antenna design. The signal radiation from uniaxial antennas exhibits significant directionality, resulting in limited signal coverage in space. Signal strength in different directions in space can vary significantly, resulting in uneven signal coverage and directionality, making it impossible to achieve stable signal coverage across the entire space.

[0005] Due to the directional nature of signal coverage, the signal strength received by devices at different locations and angles varies. This uneven signal coverage leads to unstable positioning accuracy at all angles and locations indoors, resulting in low positioning accuracy. Especially when devices are randomly placed, the positioning signal is extremely unstable, resulting in large positioning errors. In actual use, users typically experience positioning drift of around 10 meters. This signal unevenness significantly reduces the reliability and accuracy of the positioning system, significantly limiting its application in certain applications requiring high positioning accuracy.

[0006] Therefore, existing Bluetooth beacons typically require specific installation directions and angles during installation, placing high demands on installation to ensure effective signal coverage. Improper installation or even slight deviations can affect the range and strength of signal coverage, significantly reducing coverage effectiveness, increasing deployment complexity and reducing the flexibility and practicality of the positioning system.

[0007] In addition, existing Bluetooth beacons also suffer from a short operating time. The battery life of Bluetooth iBeacon beacons is generally 2 to 3 years, and even in high-frequency usage scenarios, the battery will deplete faster. Bluetooth beacons require frequent battery replacement, especially in large-scale deployments. The short operating time limits the overall performance of the positioning system. Moreover, due to the large number of Bluetooth beacons and limited battery life, frequent battery replacement requires a lot of manpower and time, increasing maintenance costs and high operation and maintenance costs. At the same time, when the battery power is low, the stability of the battery power supply is difficult to guarantee. The signal transmission power of the Bluetooth iBeacon beacon will be weakened, resulting in a reduction in signal coverage, affecting positioning accuracy, and even causing Bluetooth beacons to fail prematurely, thereby increasing the failure rate and making maintenance and management more difficult. Utility Model Content

[0008] In view of this, the purpose of the present invention is to design an indoor positioning device based on three-axis antenna Bluetooth signal coverage, change the traditional single-axis antenna, design a three-axis Bluetooth module layout structure, and point to three different axes of X-axis, Y-axis and Z-axis at the same time, so that the signal coverage of Bluetooth beacon in space is more uniform. By arranging the Bluetooth module into a three-axis structure in the base station, the signal can be evenly transmitted in the entire space and covered in all directions, solving the problem of uneven signal coverage in the existing technology; and using Ethernet for continuous power supply, there is no need for frequent battery replacement and maintenance, which improves the scalability of the positioning system, and realizes Bluetooth indoor positioning with uniform signal coverage in multiple angles and the entire space, thereby improving the positioning accuracy and stability of the positioning system.

[0009] The utility model provides an indoor positioning device based on three-axis antenna Bluetooth signal coverage, comprising: a three-axis Bluetooth module, wherein the three-axis Bluetooth module comprises: an X-axis Bluetooth module, a Y-axis Bluetooth module, and a Z-axis Bluetooth module, which form a 90° angle with each other in a spatial coordinate system, and the Bluetooth module of each axis is respectively mounted on a PCB circuit board; the distance between the center of the PCB circuit board of the Bluetooth module of each axis and the origin of the spatial coordinate system is equal, and the distance is less than the width of the PCB circuit board.

[0010] The distance between the center of the PCB circuit board and the origin of the spatial coordinate system is equal and set to a small distance, which can make the distance between the Bluetooth module of each axis and the receiving device equal, avoiding errors in signal reception caused by different receiving distances of the three-axis Bluetooth module; at the same time, it also makes the device compact, reduces the volume occupied, and improves the mobility and portability of the device.

[0011] Each of the three Bluetooth modules, the X-axis Bluetooth module, the Y-axis Bluetooth module, and the Z-axis Bluetooth module, receives power from the Ethernet power supply module and transmits Bluetooth signals along the three axes of X, Y, and Z, respectively. The signal coverage is uniform, reducing blind spots.

[0012] Furthermore, the three-axis Bluetooth module is integrated with a three-axis Bluetooth antenna, which are: an X-axis Bluetooth antenna, a Y-axis Bluetooth antenna, and a Z-axis Bluetooth antenna. Each Bluetooth antenna is integrated in the Bluetooth module of the corresponding axis.

[0013] This new antenna arrangement no longer relies on the receiving device being mounted in a single orientation, reducing the strict angle requirements for device installation and simplifying the device deployment process while ensuring stable signal coverage. The multi-axis antenna design also reduces multipath interference caused by signal reflections, thereby improving signal quality and positioning accuracy.

[0014] Furthermore, the three-axis Bluetooth antenna layout improves the uniformity of Bluetooth signal transmission. Compared to traditional single-axis antenna arrangements, this new device utilizes a three-axis (X, Y, and Z) antenna layout. This arrangement provides more uniform signal coverage in three dimensions, reducing signal blind spots and unevenness, and significantly improving positioning accuracy. This three-dimensional omnidirectional coverage is particularly effective in complex indoor environments.

[0015] Furthermore, the Bluetooth module of each axis of the X-axis Bluetooth module, the Y-axis Bluetooth module, and the Z-axis Bluetooth module includes: a Bluetooth signal generating unit and a radio frequency circuit, and the Bluetooth signal generating unit of each axis is connected to the Bluetooth antenna of the axis through the radio frequency circuit of the axis.

[0016] The Bluetooth signal generator generates a Bluetooth signal, which is transmitted via a radio frequency circuit to the Bluetooth antenna, which then transmits it. By integrating three Bluetooth modules and performing random transmission, the Bluetooth signal transmission frequency is increased threefold. This higher transmission frequency enables receiving devices to receive Bluetooth signals more frequently. Compared to traditional Bluetooth beacons, this device enables mobile receiving devices to receive more signals simultaneously. This intensive Bluetooth signal transmission significantly improves the positioning accuracy and response speed of the positioning system.

[0017] Furthermore, the indoor positioning device also includes an Ethernet power supply module connected to the three-axis Bluetooth module through a circuit. The Ethernet power supply module includes: a POE power supply PD module, and the input end of the POE power supply PD module is connected to the PSE (Power Sourcing Equipment) power supply equipment.

[0018] Specifically, 48V power is provided to the Bluetooth positioning base station through an Ethernet cable, and the POE power supply PD module converts the 48V power into a 12V DC output for use by subsequent modules.

[0019] Furthermore, the output end of the POE power supply PD module is connected to an LDO step-down module.

[0020] The 12V voltage output by the POE power supply PD module enters the LDO step-down module, which steps it down to the operating voltage required by the Bluetooth module (such as 3.3V or 5V), ensuring voltage stability and low ripple output.

[0021] This utility model adopts POE (Power over Ethernet), which not only avoids the problem of frequent battery replacement, but also can continuously power the device through the network cable, greatly improving the stability and usability of the system, and is especially suitable for large-scale, long-term deployment scenarios.

[0022] Furthermore, the output end of the LDO step-down module is connected to a branching HUB unit.

[0023] The LDO step-down module reduces the voltage to a voltage that the Bluetooth module can work at. The single-channel stable voltage output by the LDO step-down module is received by the branching HUB unit and used for Bluetooth signal transmission of the three-axis Bluetooth module.

[0024] Furthermore, the branching HUB unit includes three parallel power supply ports, one power supply port is connected to the X-axis Bluetooth module, another power supply port is connected to the Y-axis Bluetooth module, and another power supply port is connected to the Z-axis Bluetooth module.

[0025] The branching HUB unit 1 divides the voltage into three paths and sends them to the X-axis Bluetooth module, the Y-axis Bluetooth module, and the Z-axis Bluetooth module respectively.

[0026] Each of the three Bluetooth modules—the X-axis, Y-axis, and Z-axis—receives independent power from a Power over Ethernet (PoE) module. PoE power is split between the three modules, ensuring independent transmission. This not only improves the stability of the positioning system but also avoids the frequent battery changes associated with battery-powered solutions, making it particularly suitable for large-scale deployments and long-term use.

[0027] Furthermore, the POE power supply PD module is separately provided on a circuit board; the LDO step-down module and the branching HUB unit are integrated and provided on another circuit board.

[0028] Cables of different voltage levels laid together will cause bidirectional interference. The POE power supply PD module of the utility model is not arranged on the same circuit board as the LDO step-down module and the branching HUB unit, thereby avoiding the interference of the high voltage of the POE power supply PD module on the low voltage of the LDO step-down module and the branching HUB unit.

[0029] Furthermore, the LDO step-down module includes an LDO linear regulator, and the branching HUB unit includes a three-way Ethernet line hub.

[0030] The LDO linear regulator can reduce the ripple introduced by the output voltage of the POE power supply PD module, thereby enhancing the transmission stability of the Bluetooth signal.

[0031] Furthermore, the external package of the three-axis Bluetooth module and the Ethernet power supply module is provided with a base station shell, and the base station shell is provided with heat dissipation holes.

[0032] A closed cavity is formed inside the base station casing, in which the Ethernet power supply module and the three-axis Bluetooth module are installed. The base station casing dissipates the heat generated by the module through heat dissipation holes, ensuring that the device maintains an appropriate temperature during long-term operation and can adapt to different installation angles and application scenarios.

[0033] Furthermore, the base station housing comprises an upper shell and a lower shell, and the upper shell and the lower shell are connected by screws. The device is easy and quick to install, has a compact, firm and stable structure, and has good reliability and maintainability.

[0034] Furthermore, the number of the three-axis Bluetooth modules and / or the Power over Ethernet modules can be expanded to multiple. Traditional battery-powered systems require extensive human resources and time for maintenance and management in large-scale applications, resulting in limited scalability. However, this device, thanks to its continuous POE power supply and modular design, allows the positioning system to be easily expanded to large deployment scenarios. Furthermore, since it requires no frequent maintenance, its scalability is greatly improved, making it suitable for long-term and large-scale scenarios.

[0035] Compared with the prior art, the beneficial effects of the present invention are:

[0036] The indoor positioning device based on three-axis antenna Bluetooth signal coverage provided by the utility model changes the traditional single-axis antenna and designs a three-axis Bluetooth module layout structure, which points to three different axes of X-axis, Y-axis and Z-axis at the same time, so that the signal coverage of Bluetooth beacon in space is more uniform. By arranging the Bluetooth module into a three-axis structure in the base station, the signal can be evenly transmitted in the entire space and covered in all directions, solving the problem of uneven signal coverage in the existing technology. It also adopts Ethernet for continuous power supply, and does not require frequent battery replacement and maintenance, which improves the scalability of the positioning system, realizes Bluetooth indoor positioning with uniform signal coverage in multiple angles and the entire space, improves the positioning accuracy and stability of the positioning system, has high maintainability and applicability, and has broad prospects for promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those skilled in the art. The accompanying drawings are only for illustrating the preferred embodiment and are not to be considered as limiting the present invention.

[0038] In the attached figure:

[0039] Figure 1 This is a schematic diagram of the internal structure of an indoor positioning device based on three-axis antenna Bluetooth signal coverage according to an embodiment of the present utility model;

[0040] Figure 2 This is a schematic diagram of the architecture of an indoor positioning device based on three-axis antenna Bluetooth signal coverage according to an embodiment of the present invention.

[0041] The symbols in the accompanying drawings are:

[0042] 1. Omnidirectional Bluetooth positioning base station, 101. POE power supply PD module, 102. LDO step-down module, 103. Branching HUB unit, 104. X-axis Bluetooth module, 105. Y-axis Bluetooth module, 106. Z-axis Bluetooth module, 107. Base station housing, 108. X-axis Bluetooth antenna, 109. Y-axis Bluetooth antenna, 110. Z-axis Bluetooth antenna. DETAILED DESCRIPTION

[0043] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all possible embodiments consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

[0044] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," "the," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0045] It should be understood that although the terms first, second, and third may be used in this disclosure to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this disclosure, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining."

[0046] The present invention provides an indoor positioning device based on the Bluetooth signal coverage of a three-axis antenna. Figure 1 、 2 As shown, the omnidirectional Bluetooth positioning base station 1 includes a three-axis Bluetooth module, which includes an X-axis Bluetooth module 104, a Y-axis Bluetooth module 105, and a Z-axis Bluetooth module 106, which are arranged at a 90° angle to each other in the spatial coordinate system. The Bluetooth module for each axis is mounted on a PCB circuit board. The center of the PCB circuit board of each axis Bluetooth module is equidistant from the origin of the spatial coordinate system, and the distance is less than the width of the PCB circuit board. The center of the PCB circuit board is equidistant from the origin of the spatial coordinate system and is set to a small distance, so that the distance between the Bluetooth module of each axis and the receiving device is equal, avoiding signal reception errors caused by different receiving distances of the three-axis Bluetooth module. At the same time, the device structure is compact, the volume occupied is reduced, and the device's portability and mobility are improved. After each Bluetooth module in the X-axis Bluetooth module 104, the Y-axis Bluetooth module 105, and the Z-axis Bluetooth module 106 receives power from the Ethernet power supply module, it transmits Bluetooth signals along the three axes of X, Y, and Z, respectively, providing uniform signal coverage and reducing blind spots. The Bluetooth modules of each axis, including the X-axis Bluetooth module 104, the Y-axis Bluetooth module 105, and the Z-axis Bluetooth module 106, include a Bluetooth signal generating unit and a radio frequency circuit. The Bluetooth signal generating unit of each axis is connected to the Bluetooth antenna of the axis through the radio frequency circuit of the axis. The Bluetooth signal generating unit generates a Bluetooth signal, which is transmitted to the Bluetooth antenna through the radio frequency circuit, and the Bluetooth antenna transmits the Bluetooth signal. By integrating the three Bluetooth modules and performing random transmission, the transmission frequency of the Bluetooth signal is increased by 3 times. The higher transmission frequency enables the receiving device to receive Bluetooth signals more frequently, allowing the mobile receiving device to receive more signals at the same time, significantly improving the positioning accuracy and response speed of the positioning system.

[0047] The three-axis Bluetooth module integrates three Bluetooth antennas: X-axis Bluetooth antenna 108, Y-axis Bluetooth antenna 109, and Z-axis Bluetooth antenna 110. Each Bluetooth antenna is integrated into the Bluetooth module for the corresponding axis. The antenna layout does not rely on the receiving device being installed in a single direction, reducing the strict angle requirements for device installation, simplifying the device deployment process, and ensuring stable signal coverage. The multi-axis antenna design also reduces multipath interference caused by signal reflections, improving signal quality and positioning accuracy. The three-axis Bluetooth antenna layout improves the uniformity of Bluetooth signal transmission, making the Bluetooth beacon's signal coverage more uniform in three-dimensional space, reducing signal blind spots and unevenness, and significantly improving positioning accuracy.

[0048] The indoor positioning device also includes a Power over Ethernet (PoE) module, which is connected to the tri-axial Bluetooth module via a circuit. The PoE module includes a Power over Ethernet (PoE) powered PD (PD) module 101, whose input is connected to a power supply (PSE) (Power Supply Equipment) (PSE). 48V power is supplied to the Bluetooth positioning base station via an Ethernet cable. The PoE powered PD module 101 converts this 48V power into a 12V DC output, which is then supplied to an LDO (Low-Drain Detector) buck module 102. The output of the PoE powered PD module 101 is connected to the LDO buck module 102. The 12V output from the PoE powered PD module 101 enters the LDO buck module 102, where it is stepped down to the operating voltage (3.3V or 5V) required by the Bluetooth module, ensuring voltage stability and low ripple.

[0049] The POE powered PD module 101 intelligently converts the power supplied by the PSE device to a DC 12V voltage, achieving a maximum power supply of 15W. Traditional Bluetooth beacons are typically battery-powered, requiring replacement every two to three years. This creates high maintenance costs and is particularly inconvenient in large deployments. This embodiment utilizes POE power over Ethernet, eliminating the need for frequent battery replacements. Furthermore, the device can be continuously powered via the network cable, improving system stability and usability.

[0050] The output end of the LDO step-down module 102 is connected to the branch HUB unit 103. The LDO step-down module 102 reduces the voltage to a voltage at which the Bluetooth module can operate. The single-channel stable voltage output by the LDO step-down module is received by the branch HUB unit 103. The branch HUB unit 1 divides the single-channel stable voltage into three voltages, which are respectively sent to the X-axis Bluetooth module, the Y-axis Bluetooth module, and the Z-axis Bluetooth module for Bluetooth signal transmission of the three-axis Bluetooth module. The branch HUB unit 103 includes three parallel power supply ports, one power supply port is connected to the X-axis Bluetooth module 104, another power supply port is connected to the Y-axis Bluetooth module 105, and the other power supply port is connected to the Z-axis Bluetooth module 106. The LDO step-down module 102 includes an LDO linear regulator, and the branch HUB unit 103 includes a three-channel Ethernet cable hub. The LDO linear regulator can reduce the ripple introduced by the output voltage of the POE power supply PD module, thereby enhancing the transmission stability of the Bluetooth signal. Each of the three Bluetooth modules—X-axis Bluetooth module 104, Y-axis Bluetooth module 105, and Z-axis Bluetooth module 106—receives independent power from a Power over Ethernet (PoE) module. This PoE power is then split between the three Bluetooth modules, ensuring independent transmission. This not only improves the stability of the positioning system but also avoids the frequent battery replacement associated with battery-powered solutions, making it particularly suitable for large-scale deployments and long-term use.

[0051] like Figure 1 As shown, the POE-powered PD module 101 is independently mounted on one circuit board; the LDO step-down module 102 and the branching HUB unit 103 are integrated on another circuit board. Laying cables of different voltage levels together can cause bidirectional interference. The present invention separates the POE-powered PD module, the LDO step-down module, and the branching HUB unit from the same circuit board, preventing the high voltage of the POE-powered PD module from interfering with the low voltage of the LDO step-down module and the branching HUB unit.

[0052] The base station housing 107 is enclosed within the triaxial Bluetooth module and the Power over Ethernet module, and is provided with heat dissipation holes. The base station housing forms a closed cavity within which the Power over Ethernet module and the triaxial Bluetooth module are mounted. The heat generated by the modules is dissipated through the heat dissipation holes, ensuring that the device maintains an appropriate temperature during long-term operation and can adapt to various installation angles and application scenarios. Preferably, the base station housing 107 comprises an upper shell and a lower shell, which are connected to the lower shell by screws. This device is easy and quick to install, has a compact, stable structure, and is reliable and maintainable.

[0053] The device adopts POE continuous power supply and modular design, and because it does not require frequent maintenance, it greatly improves scalability. The positioning system can be easily expanded to large-scale deployment scenarios. The number of three-axis Bluetooth modules and Ethernet power supply modules can be expanded to multiple according to the scenario requirements, making it suitable for long-term and large-scale scenario applications.

[0054] The indoor positioning device based on the three-axis antenna Bluetooth signal coverage of this embodiment changes the traditional single-axis antenna and designs a three-axis Bluetooth module layout structure, which points to three different axes of X-axis, Y-axis and Z-axis at the same time, so that the signal coverage of Bluetooth beacon in space is more uniform. By arranging the Bluetooth module into a three-axis structure in the base station, the signal can be evenly transmitted in the whole space and covered in all directions, solving the problem of uneven signal coverage in the prior art. In addition, it adopts Ethernet continuous power supply, without the need for frequent battery replacement and maintenance, thus improving the scalability of the positioning system, realizing Bluetooth indoor positioning with uniform signal coverage in multiple angles and the whole space, and improving the positioning accuracy and stability of the positioning system.

[0055] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

[0056] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, substitutions, or improvements made within the spirit and principles of the present invention shall be within the scope of protection of the present invention.

Claims

1. An indoor positioning device based on three-axis antenna Bluetooth signal coverage, characterized in that: include: A three-axis Bluetooth module includes: an X-axis Bluetooth module, a Y-axis Bluetooth module, and a Z-axis Bluetooth module, which form a 90° angle with each other in the spatial coordinate system. The Bluetooth module of each axis is respectively mounted on a PCB circuit board; the distance between the center of the PCB circuit board of the Bluetooth module of each axis and the origin of the spatial coordinate system is equal, and the distance is less than the width of the PCB circuit board.

2. The indoor positioning device based on three-axis antenna Bluetooth signal coverage according to claim 1, characterized in that: The three-axis Bluetooth module is integrated with a three-axis Bluetooth antenna, which includes an X-axis Bluetooth antenna, a Y-axis Bluetooth antenna, and a Z-axis Bluetooth antenna. Each Bluetooth antenna is integrated into the Bluetooth module of the corresponding axis.

3. The indoor positioning device based on three-axis antenna Bluetooth signal coverage according to claim 2, characterized in that: The Bluetooth module of each axis of the X-axis Bluetooth module, the Y-axis Bluetooth module, and the Z-axis Bluetooth module includes: a Bluetooth signal generating unit and a radio frequency circuit. The Bluetooth signal generating unit of each axis is connected to the Bluetooth antenna of the axis through the radio frequency circuit of the axis.

4. The indoor positioning device based on three-axis antenna Bluetooth signal coverage according to claim 1, characterized in that: It also includes an Ethernet power supply module connected to the three-axis Bluetooth module through a circuit. The Ethernet power supply module includes: a POE power supply PD module, and the input end of the POE power supply PD module is connected to the PSE power supply equipment.

5. The indoor positioning device based on three-axis antenna Bluetooth signal coverage according to claim 4, characterized in that: The output end of the POE power supply PD module is connected to an LDO step-down module.

6. The indoor positioning device based on three-axis antenna Bluetooth signal coverage according to claim 5, characterized in that: The output end of the LDO step-down module is connected to a branching HUB unit.

7. The indoor positioning device based on three-axis antenna Bluetooth signal coverage according to claim 6, characterized in that: The branching HUB unit includes three parallel power supply ports, one power supply port is connected to the X-axis Bluetooth module, another power supply port is connected to the Y-axis Bluetooth module, and another power supply port is connected to the Z-axis Bluetooth module.

8. The indoor positioning device based on three-axis antenna Bluetooth signal coverage according to claim 6, characterized in that: The POE power supply PD module is separately arranged on a circuit board; the LDO step-down module and the branching HUB unit are integrated and arranged on another circuit board.

9. The indoor positioning device based on three-axis antenna Bluetooth signal coverage according to claim 6, characterized in that: The LDO step-down module includes an LDO linear regulator, and the line distribution HUB unit includes a three-way Ethernet line hub.

10. The indoor positioning device based on three-axis antenna Bluetooth signal coverage according to claim 1, characterized in that: The external package of the three-axis Bluetooth module and the Ethernet power supply module is provided with a base station shell, and the base station shell is provided with heat dissipation holes.

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