Bluetooth positioning beacon equipment powered by direct-current cable and modular design method

Abstract

The invention relates to the technical field of wireless communication and positioning, and provides a Bluetooth positioning beacon device powered by a direct-current cable and a modular design method. The equipment comprises a power supply voltage stabilizing module, a Bluetooth communication module, a main control circuit and a remote state reporting function, supports power optimization, frequency calibration and an RSS I compensation mechanism, can adapt to various voltage inputs, operates stably, and has low power consumption and high durability. The Bluetooth module supports Bluetooth 5.0 and above versions, the multipath effect and the signal interference can be effectively reduced, and the positioning precision and the coverage range in a complex indoor environment are improved. During operation, the power supply voltage stabilizing module ensures stable power supply; the Bluetooth communication module is efficient in interaction, rapid in connection and stable in transmission; the main control circuit accurately controls each module; and a remote state reporting function facilitates real-time monitoring of a user. Power optimization reduces energy consumption, frequency calibration reduces communication interference, RSS I compensation improves signal measurement accuracy, and then positioning precision is improved.

Description

Technical Field

[0001] This invention relates to the field of wireless communication technology, and in particular to a Bluetooth positioning beacon device powered by a DC cable and a modular design method. Background Technology

[0002] In the field of indoor positioning, Bluetooth positioning beacon devices are often powered by batteries or independent power adapters, but this has significant drawbacks. Battery-powered devices require regular battery replacements, increasing labor and maintenance costs and affecting continuous operation; independent power adapters increase system complexity and the risk of failure.

[0003] These two power supply methods result in high operation and maintenance costs, limiting the economic viability and scalability of the equipment in indoor positioning and asset tracking applications. Furthermore, the Bluetooth modules of existing devices often do not support higher versions of the Bluetooth protocol, leading to low data transmission efficiency and poor communication stability, making it difficult to meet the requirements of high-precision positioning scenarios.

[0004] Furthermore, the lack of power optimization, frequency calibration, and RSS I compensation mechanisms results in poor signal stability and affects positioning accuracy. Therefore, a new power supply solution is urgently needed. Against this backdrop, Bluetooth positioning beacon devices powered by DC cables have emerged, providing stable power, reducing operation and maintenance costs, ensuring large-scale application, and facilitating high-precision positioning services in complex indoor environments. Summary of the Invention

[0005] This invention aims to provide a DC cable-powered Bluetooth positioning beacon device and its modular design method. Employing DC cable power supply technology, it exhibits significant advantages in several aspects. In terms of power supply and maintenance, it eliminates the need for disposable batteries, reducing labor and maintenance costs and environmental pollution risks. Its high energy conversion efficiency aligns with green and low-carbon principles, ensuring long-term stable operation. In terms of performance, the Bluetooth 5.0 and above modules, combined with power optimization, frequency calibration, and RSS1 compensation mechanisms, improve data transmission efficiency and enhance signal stability and positioning accuracy. Regarding structure and application, the simplified structure facilitates standardized production and large-scale deployment. The dustproof and waterproof casing design enhances the device's durability and adaptability in complex indoor environments, meeting the needs of the Internet of Things and smart cities, and improving user experience and application effectiveness.

[0006] To achieve the above objectives, the present invention provides a modular design method for a DC cable-powered Bluetooth positioning beacon device, comprising the following steps:

[0007] S1: Construct a multi-input voltage adaptable regulated power supply module, adopting a stepped voltage-controlled feedback loop structure, supporting 5V, 9V, 12V inputs and dynamically and stably outputting to the main control system;

[0008] S2: Configure a Bluetooth communication module with multi-state frequency hopping and link learning capabilities. The module has a multi-channel historical self-learning buffer for predicting interference trends and actively avoiding known high-interference channels.

[0009] S3: The main control unit is designed with edge intelligent evolution function. It adopts an event-driven microcontroller combined with a lightweight rule inference engine (ERE). The main control can dynamically load or shut down the resources of specified modules according to externally triggered tasks to minimize power consumption.

[0010] S4: Construct a remote status reporting module. The module can selectively upload the following status parameters through a joint mechanism of periodic sampling and anomaly criteria: power consumption, temperature drift rate, Bluetooth reception failure rate, signal offset variance, etc.

[0011] S5: Construct a power regulation subsystem based on a multi-objective game model;

[0012] S6: Construct a frequency calibration module based on fuzzy prediction. This module combines a time series predictor (such as ARIMA) with a fuzzy inference engine to correct the reference frequency.

[0013] S7: Constructing an RSS I multivariate compensation model based on Bayesian inference:

[0014] S8: Construct a motherboard module with self-calibrating power consumption behavior characteristics. Its internal hardware functions are activated on demand by partitioning, supporting independent power-off hibernation in local areas, and having the ability to reconfigure the module's working mode by an edge rule engine.

[0015] S9: The packaging structure adopts a composite path optimization design of thermal conduction + electromagnetic discharge, and features an integrated structural radome and a micro-pressure equalization membrane, making it suitable for extreme scenarios such as underground, humid, and high-dust environments.

[0016] In step S5, the system determines the current transmit power based on the following equalization function.

[0017] in:

[0018] U link (P): Represents the link quality utility function;

[0019] H temp (P): Indicates the rate of temperature rise at this power;

[0020] J battery (P): Indicates the degree of battery life reduction at this power level;

[0021] λ1 and λ2 are game cost weights that are adaptively adjusted according to the device status.

[0022] The correction amount in step S6 is expressed as follows:

[0023] Δf = μ1·Temperature trend prediction + μ2·Frequency deviation residual trend;

[0024] Among them, μ1 and μ2 are updated in real time by the system fuzzy controller according to the fuzzy rules of the running error.

[0025] In step S7, the compensation model uses the current environmental map state E k As a priori condition, based on the following

[0026] Formula for inferring the true signal strength:

[0027] P(RSSI real |RSSI obs E k ∝P(E k )·P(RSSI obs |RSSI real );

[0028] The environmental map includes, but is not limited to: spatial obstruction layout; multipath reflection probability; material absorption coefficient, etc.

[0029] This invention provides a Bluetooth positioning beacon device powered by a DC cable. The device includes an integrated circuit board and a housing. The integrated circuit board is responsible for processing signals and communicating with external devices. The bottom is equipped with a DC power interface for easy access to DC power.

[0030] The beacon is powered by a DC cable, which simplifies equipment maintenance, ensures a continuous and stable power supply, and guarantees the stable operation of the Bluetooth beacon for a long time.

[0031] The Bluetooth module supports Bluetooth 5.0 or later, improving data transmission efficiency.

[0032] It is equipped with an RSS I compensation module to correct the received signal strength indication, improve the accuracy of signal strength measurement, and thus improve the accuracy of indoor positioning;

[0033] During use, the Bluetooth beacon has a stable power supply, and the signal transmission will not weaken due to battery power decay, ensuring the reliability of device communication.

[0034] This invention also includes a power supply voltage regulator module, a remote status reporting module, a power optimization module, a frequency calibration module, and an RSS I compensation module. The power supply voltage regulator module adapts to various voltage inputs and ensures stable device operation; the remote status reporting module transmits key information such as the device's operating status and signal strength to a remote monitoring center in real time; the power optimization module adjusts the transmission power according to actual automatic application scenarios to reduce energy consumption and ensure signal coverage; the frequency calibration module ensures the frequency accuracy of the Bluetooth signal, reducing communication interference and positioning errors caused by frequency deviations; and the RSS I compensation module corrects the received signal strength indication, improving the accuracy of signal strength measurement and thus enhancing indoor positioning accuracy.

[0035] The beneficial effects achieved by this invention are as follows:

[0036] This invention employs DC cable power supply technology, exhibiting significant advantages in multiple aspects. In terms of power supply and maintenance, it eliminates the need for disposable batteries, reducing labor and maintenance costs and environmental pollution risks. Its high energy conversion efficiency aligns with green and low-carbon principles, ensuring long-term stable operation of the equipment. In terms of performance, the Bluetooth 5.0 and above modules, combined with power optimization, frequency calibration, and RSS1 compensation mechanisms, improve data transmission efficiency and enhance signal stability and positioning accuracy. Regarding structure and application, the simplified structure facilitates standardized production and large-scale deployment. The dustproof and waterproof casing design enhances the equipment's durability and adaptability in complex indoor environments, meeting the needs of the Internet of Things and smart cities, and improving user experience and application effectiveness. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the structure of the DC cable-powered Bluetooth beacon device of the present invention;

[0038] Figure 2 This is a schematic diagram of the integrated circuit board structure for the DC cable-powered Bluetooth beacon of the present invention.

[0039] In the diagram: 1. Integrated circuit board; 2. Casing. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] Example 1: As Figure 1 and Figure 2As shown, this embodiment provides a modular design method for a DC cable-powered Bluetooth positioning beacon device, including the following steps:

[0042] S1: Construct a multi-input voltage adaptable regulated power supply module, adopting a stepped voltage-controlled feedback loop structure, supporting 5V, 9V, 12V inputs and dynamically and stably outputting to the main control system;

[0043] Ordinary Bluetooth beacons only support a single fixed input voltage, which cannot adapt to different power supply scenarios (such as 12V for industrial use, 9V for automotive use, and 5V USB power supply for office use). Secondly, changes in input voltage can affect the power supply stability of the main control chip, leading to frequent restarts, data loss, and other malfunctions. This embodiment introduces a multi-voltage compatible regulated power supply module, the core of which is a "stepped voltage-controlled feedback loop," as detailed below:

[0044] Multiple voltage divider feedback nodes and comparator links are used to dynamically enable different voltage regulation branches; if the input voltage is 5V, LDO-5 is enabled; if it is 9V / 12V, switching buck is enabled; the voltage regulation feedback control module outputs to 3.3V / 1.8V, dynamically selecting the voltage path and stabilizing the main control power supply, improving equipment adaptability, and allowing direct deployment without changing the power supply interface; enhancing the ability to resist voltage fluctuations and avoiding system interruptions caused by power fluctuations.

[0045] S2: Configure a Bluetooth communication module with multi-state frequency hopping and link learning capabilities. The module has a multi-channel historical self-learning buffer for predicting interference trends and actively avoiding known high-interference channels.

[0046] Current Bluetooth devices use fixed channels or traditional frequency hopping mechanisms, which cannot determine which channels are frequently interfered with (such as Wi-Fi occupancy) based on historical data; this results in poor signal stability and a high packet error rate, especially in crowded environments (such as warehouses and hospitals).

[0047] In this embodiment, a Bluetooth module with link learning capability is designed: each time communication fails or signal attenuation occurs, the failed channel and environmental parameters are recorded; the data is written to a multi-channel learning buffer; an Interference Score Table is constructed; and before the next frequency hopping, high-risk interference channels are automatically eliminated based on the score table.

[0048] It can also read the electromagnetic environment RSS I heat map to predict interference trends over a short period of time. It features dynamic channel avoidance capabilities, improving anti-interference capabilities; significantly improved communication success rate, making it particularly suitable for complex interference scenarios; and reduced signal retransmission, indirectly lowering power consumption.

[0049] S3: The main control unit is designed with edge intelligent evolution function. It adopts an event-driven microcontroller combined with a lightweight rule inference engine (ERE). The main control can dynamically load or shut down the resources of specified modules according to externally triggered tasks to minimize power consumption.

[0050] Traditional MCU master controllers poll modules according to a fixed process, and continue to supply power even if some modules do not need to run (such as polling RSS I when positioning is not enabled), resulting in resource waste and high power consumption; most current beacon master controllers do not have task scheduling capabilities and cannot flexibly load and release functional modules.

[0051] This embodiment introduces an event-driven microcontroller architecture: the MCU does not actively poll each module, but waits for event interrupts to trigger (such as communication interruption, low power interruption, timer overflow); it integrates a lightweight edge rule engine ERE (Edge Rule Engine): rules can be set, such as: when a user approaches (detecting an increase in RSS I) → enable Bluetooth transmission; when in a low power state → pause the positioning module; rules can be configured and distributed remotely, supporting hot updates.

[0052] The module can be activated / hibernate on demand, achieving "edge-level intelligent wake-up"; effectively reducing unnecessary power consumption and extending battery life; and introducing a lightweight intelligent framework of "adaptive computing scheduling" for edge devices.

[0053] S4: Construct a remote status reporting module. The module can selectively upload the following status parameters through a joint mechanism of periodic sampling and anomaly criteria: power consumption, temperature drift rate, Bluetooth reception failure rate, signal offset variance, etc.

[0054] This embodiment establishes a joint reporting mechanism: periodic sampling mode: such as sampling voltage, current, and temperature every 60 seconds; anomaly triggering mode: once the indicator fluctuation exceeds the threshold, the upload is immediately triggered.

[0055] The reported parameters include not only the normal state, but also: temperature drift rate ΔT / Δt: monitoring the temperature rise trend of the main control unit; Bluetooth reception failure rate: reflecting channel quality; signal offset variance: used to analyze clock drift or interference; instantaneous current anomaly ratio: capturing power supply anomalies or short circuit tendencies.

[0056] The reported data is more intelligent, accurate, and energy-efficient; it provides a multi-dimensional operational profile for remote system management; and it enhances the early warning and remote diagnostic capabilities of equipment operation and maintenance.

[0057] S5: Construct a power regulation subsystem based on a multi-objective game theory model; To achieve adaptive transmit power regulation of Bluetooth devices in different scenarios, the system introduces a power control mechanism based on a multi-objective optimization game theory model, and constructs the following optimization objective function:

[0058] The system described in step S5 determines the current transmit power based on the following equalization function:

[0059]

[0060] in:

[0061] U link (P): Represents the link quality utility function, which represents the joint evaluation value of the system's communication quality indicators, such as signal strength, bit error rate, and retransmission rate, under power P.

[0062] H temp (P): Represents the rate of temperature rise of the device under power P, which can be estimated by real-time monitoring of the temperature change rate by the chip temperature sensor, for example, through... express;

[0063] J battery (P): Indicates the degree of reduction in battery life at power P, for example, expressed as "equivalent depth of discharge growth rate" or "voltage drop rate per unit power";

[0064] λ1 and λ2 are adjustment parameters that represent the system's sensitivity and weight to "temperature rise loss" and "battery life loss," and can be dynamically adjusted according to the current operating scenario.

[0065] The essence of step S5 is to construct a system that "in a dynamic environment, comprehensively considers multiple system objectives and provides the current optimal transmit power in real time." "strategy system".

[0066] S6: Construct a frequency calibration module based on fuzzy prediction. This module combines a time series predictor (such as ARIMA) with a fuzzy inference engine to correct the reference frequency.

[0067] To improve the frequency stability of the Bluetooth module in complex environments, this embodiment constructs a frequency calibration module based on fuzzy prediction. This module integrates a time-series prediction algorithm (such as ARIMA) with a fuzzy inference engine to predict the trends of ambient temperature change and frequency offset residuals, respectively. A fuzzy controller dynamically determines the weight of each trend on the final frequency correction value. The frequency correction value is expressed as follows:

[0068] Δf = μ1·Temperature trend prediction + μ2·Frequency deviation residual trend;

[0069] Where Δf represents the correction amount (Hz or ppm) of the system to the current transmission frequency at time t, which will be applied to the VCO (voltage-controlled oscillator) or DCO (digital oscillator);

[0070] Temperature trend prediction: based on continuous temperature changes (T) t-1 ,T t-2...) Construct a time series model to predict future temperature change rates and guide frequency pre-shifting;

[0071] μ1 and μ2 are weighting coefficients dynamically adjusted by the system's fuzzy controller, reflecting the degree to which each trend dominates the current calibration. This can effectively improve the communication stability and frequency consistency of the equipment under non-constant temperature environments or conditions of fluctuating crystal oscillator quality.

[0072] S7: Constructing a multivariate compensation model for RSSI based on Bayesian inference:

[0073] RSSI is easily affected by environmental factors and does not equal the actual propagation loss. In indoor or semi-enclosed spaces, the following factors can cause serious errors: obstructions (such as walls, people, metal), multipath reflection (signal bounces and "detours" to reach the target), and differences in material absorption characteristics (wood, glass, metal, etc.). A single RSSI reading cannot accurately represent the actual channel loss, and a compensation model must be introduced.

[0074] To improve the accuracy of RSSI measurements in complex electromagnetic environments, this invention proposes a multivariate RSSI compensation model based on Bayesian inference. This model uses the currently observed RSSI value as the basis for calculation. obs With environmental map state E k Assuming this is the case, the following Bayesian inference formula is used to obtain an RSSI that more closely approximates the true propagation strength. real ;

[0075] P(RSSI real |RSSI obs E k )∝P(E k )·P(RSSI obs |RSSI real );

[0076] The environmental map includes, but is not limited to: spatial obstruction layout; multipath reflection probability; material absorption coefficient, etc.

[0077] RSSI obs : Indicates the original received signal strength (affected by various interferences) collected by the current device;

[0078] RSSI real This represents the "real" signal strength value that should exist under ideal conditions.

[0079] E k It indicates the current state of the environment in which the device is located (spatial information such as obstacles and materials);

[0080] P(RSSI real |RSSI obs E kPosterior probability: representing the likelihood that a certain RSSI value is the true value given the current observation and environment;

[0081] P(E k ): Prior probability of environmental state, which can be modeled based on historical statistics;

[0082] P(RSSI obs |RSSI real Likelihood function: represents the probability of observing the current RSSI if the true RSSI is a certain value (based on interference modeling).

[0083] Based on the above inferences, the system can output a more robust RSSI estimate in complex scenarios with multipath interference or occlusion, thereby improving positioning accuracy and communication reliability.

[0084] Environmental Map E k This is an important input to the model, describing the "RF propagation structure" of the current deployment scenario, including but not limited to the following features: spatial obstruction distribution: number and distribution of walls; presence of obstructions (such as personnel flow, shelves); multipath reflection probability: whether ceiling / ground / metal surface causes reflection; estimation of signal path bounce number; material absorption coefficient: absorption and attenuation capability of walls or obstacles for signals of different frequency bands; commonly used models: I TU wall penetration model (I TU-TP.1238) or COST231.

[0085] S8: Construct a motherboard module with self-calibrating power consumption behavior characteristics. Its internal hardware functions are activated on demand by partitioning, supporting independent power-off hibernation in local areas, and having the ability to reconfigure the module's working mode by an edge rule engine.

[0086] S9: The packaging structure adopts a composite path optimization design of thermal conduction + electromagnetic discharge, and features an integrated structural radome and a micro-pressure equalization membrane, making it suitable for extreme scenarios such as underground, humid, and high-dust environments.

[0087] This invention proposes a motherboard structure with self-calibrating energy consumption behavior. Its internal functional modules are arranged in a region-based manner and support on-demand activation and partial power-off. The main control chip integrates an Edge Rule Engine (ERE), which can dynamically load / unload functional areas according to environmental conditions and operating strategies to maximize energy efficiency. Simultaneously, the motherboard supports a remote rule hot-update mechanism, allowing the operating mode to be reconstructed without a system restart.

[0088] To adapt to extreme deployment environments, an integrated packaging structure has been further constructed, employing a combination design of a thermally conductive layer and an electromagnetic discharge path. The structural radome and housing are integrally injection molded, ensuring stable signal performance. The outer shell has reserved through-holes for a micro-pressure equalization membrane, which is waterproof, breathable, and dust-resistant, ensuring continuous and stable operation of the equipment in high humidity, high pressure, and dusty environments.

[0089] Example 2: Figure 1 and Figure 2 As shown, this embodiment provides a Bluetooth positioning beacon device powered by a DC cable, comprising two main components: an integrated circuit board 1 and a housing 2. The integrated circuit board is responsible for signal processing and communication with external devices, and is equipped with a DC power interface at the bottom for easy access to DC power. The housing features a dustproof and waterproof design, possessing high durability and adaptability to complex indoor environments.

[0090] The beacon is powered by a DC cable, which simplifies equipment maintenance, ensures a continuous and stable power supply, and guarantees the stable operation of the Bluetooth beacon for a long time.

[0091] The device features a minimalist design and compact size, making it suitable for various indoor environments. The casing is made of dustproof and waterproof materials, enhancing the device's durability and adaptability. The Bluetooth module supports Bluetooth 5.0 or higher, improving data transmission efficiency.

[0092] The device is equipped with an RSS I compensation module, which is used to correct the received signal strength indication, improve the accuracy of signal strength measurement, and thus improve the accuracy of indoor positioning.

[0093] During use, the Bluetooth beacon has a stable power supply, and the signal transmission will not weaken due to battery power decay, ensuring the reliability of device communication.

[0094] The device also includes a power supply voltage regulator module, a remote status reporting module, a power optimization module, a frequency calibration module, and an RSS I compensation module. The power supply voltage regulator module adapts to various voltage inputs and ensures stable operation. The remote status reporting module transmits key information such as the device's operating status and signal strength to a remote monitoring center in real time. The power optimization module adjusts the transmission power according to the actual automatic application scenario to reduce energy consumption and ensure signal coverage. The frequency calibration module ensures the frequency accuracy of the Bluetooth signal, reducing communication interference and positioning errors caused by frequency deviations. The RSS I compensation module corrects the received signal strength indication, improving the accuracy of signal strength measurement and thus enhancing indoor positioning accuracy.

[0095] The power supply regulator module includes a high-efficiency voltage regulation circuit that not only reduces energy consumption but also reduces heat generation.

[0096] The Bluetooth communication module is optimized for low-power performance, enabling the device to maintain its low power consumption even with continuous power supply. The device is suitable for high-precision positioning scenarios such as underground spaces and shopping mall navigation. The housing design includes a dustproof and waterproof structure that meets specific protection standards to ensure the device's reliability in harsh environments. The designed device is suitable for high-precision positioning scenarios such as underground spaces and shopping mall navigation.

[0097] With strong adaptability and more flexible power supply, the system can adapt to various power supply environments such as industrial sites, vehicles, and offices by building a power regulator module that supports multiple input voltages (such as 5V, 9V, and 12V). No external converter is required, and it can be used as a plug-and-play device.

[0098] It boasts high communication stability and strong anti-interference capabilities. Employing a Bluetooth communication module with link learning capabilities, it can record and analyze the history of multi-channel interference, achieve dynamic channel transition optimization, effectively improve channel utilization and communication stability, and perform excellently in complex radio environments.

[0099] Power consumption is significantly reduced and battery life is greatly improved. By introducing an edge rule engine through the main control module and combining it with an event-driven architecture, the system can load each sub-module on demand and control independent power-off. When the task is idle, irrelevant areas are shut down, which effectively reduces the average power consumption of the system.

[0100] Intelligent power regulation ensures excellent balance between system performance and energy consumption. It introduces a multi-objective game power optimization model to adaptively balance link quality, temperature rise rate, and battery life, enabling personalized power output selection and ensuring stable communication and low heat accumulation during long-term operation.

[0101] It boasts high positioning accuracy and outstanding resistance to obstruction and reflection interference. A multivariate RSS I compensation model based on Bayesian inference is constructed, and signal strength is restored by combining environmental map information (such as the distribution of obstructions, material absorption coefficient, and multipath reflection probability), which improves the accuracy of RSS I measurement by more than 15% and significantly enhances indoor positioning performance.

[0102] With its flexible structure, intelligent reconfiguration, and support for remote behavior adjustment, the motherboard module has self-evolution scheduling characteristics, enabling it to dynamically switch the activation status of functional modules according to rules. It also has remote update and behavior reconfiguration capabilities, making it suitable for modular deployment and function switching in multi-task scenarios.

[0103] With strong environmental adaptability, it is suitable for a variety of extreme deployment conditions. It adopts a composite structure packaging design of heat conduction + electromagnetic discharge, and the shell integrates a waterproof and breathable pressure equalizing membrane. It supports long-term stable operation in extreme environments such as basements, high humidity, high dust, and enclosed metal spaces, and has an IP67 or higher protection capability.

[0104] It is highly deployable, easy to install and maintain. It adopts an integrated molded radome and structural antenna layout, eliminating the need for external antenna cables and reducing deployment complexity. The system supports remote status reporting and anomaly reporting, facilitating unified monitoring and operation and maintenance management.

[0105] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A modular design method for a Bluetooth positioning beacon device powered by a DC cable, characterized in that, Includes the following steps: S1: Construct a regulated power supply module with multiple input voltage adaptability, and adopt a stepped voltage-controlled feedback loop structure; S2: Equipped with a Bluetooth communication module that has multi-state frequency hopping and link learning capabilities; S3: Designed main control unit with edge intelligent evolution capabilities; S4: Construct a remote status reporting module; S5: Construct a power regulation subsystem based on a multi-objective game model; S6: Construct a frequency calibration module based on fuzzy prediction; S7: Construct a multivariate compensation model for RSSI based on Bayesian inference; S8: Construct a motherboard module with self-calibrating power consumption behavior characteristics. Its internal hardware functions are activated on demand by partitioning, supporting independent power-off hibernation in local areas, and having the ability to reconfigure the module's working mode by an edge rule engine. S9: The packaging structure adopts an optimized design with a composite path of thermal conduction and electromagnetic discharge.

2. The modular design method for a DC cable-powered Bluetooth positioning beacon device according to claim 1, characterized in that, In step S5, the system determines the current transmit power based on the following equalization function. in: U link (P): Represents the link quality utility function; H temp (P): Indicates the rate of temperature rise at this power; J battery (P): Indicates the degree of battery life reduction at this power level; λ1 and λ2 are game cost weights that are adaptively adjusted according to the device status.

3. The modular design method for a DC cable-powered Bluetooth positioning beacon device according to claim 1, characterized in that, The correction amount in step S6 is expressed as follows: Δf = μ1·Temperature trend prediction + μ2·Frequency deviation residual trend; Among them, μ1 and μ2 are updated in real time by the system fuzzy controller according to the fuzzy rules of the running error.

4. The modular design method for a DC cable-powered Bluetooth positioning beacon device according to claim 1, characterized in that, In step S7, the compensation model uses the current environmental map state E k As a priori condition, the true signal strength is inferred based on the following formula: P(RSSI real RSSI obs ,AND k ∝P(E k )·P(RSSI obs RSSI real ); The environmental map includes the spatial obstruction layout; multipath reflection probability; and material absorption coefficient.

5. A Bluetooth positioning beacon device powered by a DC cable, designed using the modular design method described in any one of claims 1-4, characterized in that, The device includes an integrated circuit board (1) and a housing (2). The integrated circuit board is responsible for processing signals and communicating with external devices. The bottom is equipped with a DC power interface for easy access to DC power.

6. A Bluetooth positioning beacon device powered by a DC cable according to claim 5, characterized in that, The beacon is powered by a DC cable, which simplifies equipment maintenance, ensures a continuous and stable power supply, and guarantees the stable operation of the Bluetooth beacon for a long time.

7. A Bluetooth positioning beacon device powered by a DC cable according to claim 6, characterized in that, The Bluetooth module supports Bluetooth 5.0 or later, improving data transmission efficiency.

8. A Bluetooth positioning beacon device powered by a DC cable according to claim 7, characterized in that, It is equipped with an RSS I compensation module to correct the received signal strength indication, improve the accuracy of signal strength measurement, and thus improve the accuracy of indoor positioning; During use, the Bluetooth beacon has a stable power supply, and the signal transmission will not weaken due to battery power decay, ensuring the reliability of device communication.

9. A Bluetooth positioning beacon device powered by a DC cable according to claim 8, characterized in that, It also includes a power supply voltage regulation module, a remote status reporting function module, a power optimization module, a frequency calibration module, and an RSS I compensation module.

10. A Bluetooth positioning beacon device powered by a DC cable according to claim 9, characterized in that, in, The power supply voltage regulator module adapts to various voltage inputs and ensures stable equipment operation; the remote status reporting module transmits the equipment's operating status and signal strength information to the remote monitoring center in real time; the power optimization module adjusts the transmission power according to the actual automatic application scenario to reduce energy consumption and ensure signal coverage; the frequency calibration module ensures the frequency accuracy of the Bluetooth signal and reduces communication interference and positioning errors caused by frequency deviation; the RSS I compensation module corrects the received signal strength indication, improves the accuracy of signal strength measurement, and thus enhances the accuracy of indoor positioning.

Images