Multi-box networking Bluetooth continuous coverage type electrocardiogram data acquisition system and acquisition method

Abstract

The invention discloses a multi-box networking Bluetooth continuous coverage type electrocardiogram data acquisition system and an acquisition method. The core problems that in a large-area, long-time-interval and batch monitoring scene, Bluetooth coverage is discontinuous, multi-device cooperative expansion flexibility is poor, Type-C interface charging and data reading functions are mutually exclusive, and mobile scene data transmission is prone to being interrupted and lost in an existing electrocardiogram collection technology are solved. According to the invention, an integrated portable acquisition box is used as a core networking node, a centerless Bluetooth Mesh ad hoc network is constructed, multi-port Type-C parallel double-path shunting hardware is designed, a hardware-driven pre-synchronization post-switching seamless roaming mechanism is adopted, and a corresponding acquisition management method is matched. On-demand expansion of a monitoring coverage range, parallel cooperation of multi-terminal batch charging and off-line data reading and uninterrupted low-delay transmission of mobile scene electrocardiogram data are achieved, the system integration degree is high, deployment is convenient and fast, and operation is stable and reliable.

Description

Technical Field

[0001] This invention belongs to the field of physiological data monitoring technology, specifically relating to a Bluetooth continuous coverage ECG data acquisition system with multi-box networking, and also to a Bluetooth continuous coverage ECG data acquisition method with multi-box networking. Background Technology

[0002] In the field of physiological data monitoring and psychological assessment technology, electrocardiogram (ECG) data, as a core objective physiological indicator for assessing psychological state, has seen a continuous increase in demand for integrated applications with group batch assessment and long-term continuous monitoring. Related equipment has gradually developed towards Bluetooth connectivity, portability, and integration, providing a hardware foundation for ECG data acquisition in multiple scenarios.

[0003] Existing technologies have developed various technical solutions around areas such as wireless monitoring of group ECGs, integrated storage and charging of devices, and portable diagnostic integration. These solutions have enabled core functions such as group Bluetooth data acquisition in network-free environments, centralized management of ECG terminals, and portable ECG detection, providing important references for the technological development in this field.

[0004] However, the aforementioned existing technologies still face significant core technological bottlenecks in large-area, long-term, and batch ECG monitoring scenarios: First, Bluetooth's effective coverage range is limited, and single-point acquisition or independent repeater-assisted solutions are prone to signal blind spots, failing to guarantee the continuity of monitoring in mobile scenarios; Second, multi-device collaborative coverage capabilities are insufficient, and existing coverage expansion solutions rely on adding repeaters or increasing transmission power, resulting in high deployment costs, poor portability, and a surge in power consumption, without establishing an efficient relay coverage mechanism for multi-device collaboration; Third, the multi-port Type-C interface has poor functional coordination, making it impossible to simultaneously achieve batch fast charging and offline data synchronization of multiple ECG terminals, resulting in industry pain points such as functional mutual exclusion and limited charging efficiency; Fourth, cross-regional data roaming capabilities are insufficient, and data link switching and scheduling are complex when terminals move, easily leading to transmission delays and data loss, making it difficult to achieve low-latency seamless roaming; Fifth, hardware functional integration is low, with core functions being distributed, relying on multiple device combinations to complete the entire monitoring process, resulting in cumbersome deployment and low management efficiency in batch scenarios.

[0005] In summary, existing technologies are insufficient to meet the demands of batch, long-term, and highly reliable ECG monitoring in complex scenarios. There is an urgent need to develop an integrated ECG data acquisition solution that enables flexible expansion of coverage, coordinated charging and data reading, and seamless data roaming. Summary of the Invention

[0006] The primary objective of this invention is to provide a Bluetooth-enabled continuous coverage ECG data acquisition system with multi-box networking, which solves the technical problem that existing ECG acquisition technologies cannot meet the requirements for high-reliability continuous acquisition and efficient management of ECG data in scenarios involving large areas, long durations, and batch monitoring.

[0007] The second objective of this invention is to provide a Bluetooth continuous coverage ECG data acquisition method for multi-box networking, which solves the technical problem that existing ECG acquisition methods cannot adapt to the needs of uninterrupted continuous acquisition and efficient full-process management of ECG data in scenarios involving large areas, long durations, and batch monitoring.

[0008] The first technical solution adopted in this invention is a multi-box networked Bluetooth continuous coverage ECG data acquisition system, including several adapted acquisition box units and ECG acquisition terminals. The acquisition box units have built-in embedded industrial control hosts. Several acquisition box units construct a decentralized self-organizing network through built-in Bluetooth Mesh networking modules, and each acquisition box unit has equal status within the network. The embedded industrial control host is connected to a Bluetooth communication module group, multi-port Type-C parallel dual-path splitter hardware, an independent fast charging power supply module, and a local storage module. The multi-port Type-C parallel dual-path splitter hardware has multiple Type-C interfaces, each interface corresponding to an independent dual-path splitter module and status detection hardware. The dual-path splitter module has built-in independent charging management circuits and data switching circuits, which are hard-connected to the independent fast charging power supply module and the embedded industrial control host, respectively.

[0009] The first technical solution of this invention is further characterized by:

[0010] The outside of the data acquisition unit is equipped with a network trigger button, which is connected to the GPIO interface of the embedded industrial control host. All data acquisition units in the network serve as data acquisition nodes and network relay nodes. Each data acquisition unit achieves point-to-point data transmission through a Bluetooth Mesh networking module. Each data acquisition unit in the network maintains node status monitoring through periodic heartbeat packets. New data acquisition units can automatically connect to the existing network after power-on.

[0011] The Bluetooth communication module group includes a Bluetooth gateway, a Bluetooth Mesh networking module, and a Bluetooth signal amplification unit. The Bluetooth gateway is hard-connected to the embedded industrial control host via a USB 2.0 or UART interface, the Bluetooth Mesh networking module is hard-connected to the embedded industrial control host via a USB 3.0 or SPI interface, and the Bluetooth signal amplification unit is connected in series between the signal output terminals of the Bluetooth gateway and the Bluetooth Mesh networking module and the signal antenna on the surface of the enclosure.

[0012] The multi-port Type-C parallel dual-channel shunt hardware has no fewer than 8 Type-C interfaces; the status detection hardware is a voltage detection circuit, the input of which is hard-connected to the CC pin of the corresponding Type-C interface, and the output of which is hard-connected to the control pin of the corresponding dual-channel shunt module.

[0013] The output of the charging management circuit of the dual-channel shunt module is hard-connected to the power pin of the corresponding Type-C interface, and the output of the data switch circuit is hard-connected to the data pin of the corresponding Type-C interface; the power supply and control links of the dual-channel shunt module and status detection hardware corresponding to each Type-C interface are independent of each other.

[0014] The independent fast charging power module is independent of the embedded industrial control host's power supply system and has two independent power outputs. The first output is hard-connected to the power input of the embedded industrial control host and Bluetooth communication module group, and the second output is hard-connected to the charging management circuit input of all dual-channel shunt modules.

[0015] The second technical solution adopted in this invention is a multi-box network Bluetooth continuous coverage ECG data acquisition method, which uses the above-mentioned acquisition system and includes the following steps: S1: Deploy several data acquisition units, trigger the networking command, and build a decentralized self-organizing network through the Bluetooth Mesh networking module; S2: The ECG acquisition terminal establishes a Bluetooth connection with the nearest acquisition box unit and transmits the acquired ECG data to the corresponding acquisition box unit for storage. S3: Connect the ECG acquisition terminal to the Type-C interface of the acquisition box unit. The acquisition box unit controls the conduction status of the charging link and data link of the corresponding interface through the dual-path shunt module. S4: When the ECG acquisition terminal moves within the coverage area of ​​different acquisition box units, the acquisition box unit acquires the Bluetooth RSSI value of the terminal to complete link switching and cross-box data synchronization.

[0016] The second technical solution of the present invention is further characterized by: S1 specifically includes: S11: All data acquisition units to be networked are powered on, and the Bluetooth Mesh networking module of each data acquisition unit loads the preset unified networking basic parameters. S12: Trigger the network trigger button on any data acquisition unit. This data acquisition unit acts as the initial initiating node and sends a network invitation data packet through the Bluetooth standard broadcast channel. S13: After receiving and verifying the network invitation data packet, the remaining data acquisition box units to be networked return a node response data packet to the initial initiating node; S14: The initial initiating node assigns a unique Mesh short address to all nodes to be networked, broadcasts the core network parameters, and the network construction is completed after all nodes complete their local configuration and return network access confirmation information.

[0017] S3 specifically includes: S31: The acquisition box unit detects the change in the CC pin level of the Type-C interface through status detection hardware to identify the connected ECG acquisition terminal; S32: The data acquisition unit completes a fast charging protocol handshake with the connected ECG acquisition terminal and identifies the terminal's access requirements; S33: If only fast charging demand is detected, the acquisition box unit will only connect the charging link of the corresponding interface through the dual-path shunt module; if fast charging and offline data reading demand are detected at the same time, the acquisition box unit will connect the charging link and data link of the corresponding interface at the same time through the dual-path shunt module.

[0018] S4 specifically includes: S41: Each acquisition box unit acquires the Bluetooth RSSI value of ECG acquisition terminals within its coverage area at a preset frequency. Each acquisition box unit in the network exchanges the RSSI information of the corresponding terminal through a self-organizing network. S42: When the current service acquisition box unit detects that the terminal RSSI value has reached the first preset threshold, it transmits the ECG data within the preset time period of the terminal to the target acquisition box unit with the strongest corresponding RSSI value in the network. S43: When the current service acquisition box unit detects that the terminal RSSI value has reached the second preset threshold, it synchronizes the terminal's communication parameters with the target acquisition box unit and sends a link switching notification to the terminal. S44: The terminal establishes a Bluetooth connection with the target acquisition box unit and transmits the ECG data cached during the link switching process to the target acquisition box unit, completing cross-box data synchronization.

[0019] Compared with the prior art, the beneficial effects of the present invention are: This invention addresses the core technical bottlenecks of existing ECG acquisition technologies in large-area, long-duration, and batch monitoring scenarios. These bottlenecks include limited and discontinuous Bluetooth coverage, insufficient flexibility in multi-device collaborative expansion, conflicts between Type-C interface charging and data reading functions, easy interruption and loss of data transmission in mobile scenarios, and poor deployment and management efficiency due to low hardware integration. Using an integrated portable acquisition box as the core networking node, this invention achieves multi-dimensional technological breakthroughs through a collaborative design of a decentralized Bluetooth Mesh self-organizing network architecture, a multi-port Type-C parallel dual-path splitting hardware structure, and a hardware-driven pre-synchronization and seamless roaming mechanism. It enables flexible on-demand expansion of monitoring coverage without relying on external independent repeaters or central servers, completely eliminating signal coverage blind spots in large-area monitoring scenarios, ensuring signal continuity for long-duration mobile monitoring, and fundamentally solving the problem of incompatibility between traditional Type-C interface charging and data reading functions. Addressing industry pain points, this invention enables parallel and collaborative fast charging and offline data reading for multiple ECG acquisition terminals, significantly improving equipment management efficiency in batch monitoring scenarios. It also achieves low-latency, uninterrupted data transmission when ECG acquisition terminals move across regions, with a switching latency ≤100ms and a data loss rate <0.1%, fully guaranteeing the integrity and continuity of ECG data acquisition. This invention integrates core functions such as data acquisition, network relay, batch management, and data roaming into a portable case. A single case can independently complete the entire ECG monitoring process, while multiple cases can be networked and coordinated with a single click. This greatly simplifies the equipment deployment process for batch monitoring scenarios, improves subsequent operation and maintenance efficiency, and requires no customized modifications to existing ECG acquisition terminals. It is highly adaptable and can simultaneously meet the batch, long-term, and high-stability ECG monitoring needs of both high-reliability special scenarios and all levels of civilian medical scenarios, possessing extremely high practical value and promising application prospects. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall topology of the data acquisition system of this invention; Figure 2 This is a hardware structure block diagram of the acquisition box unit in the acquisition system of the present invention; Figure 3 This is a hardware block diagram of the single-channel Type-C interface parallel dual-channel splitting system of the present invention; Figure 4 This is a schematic diagram of the overall hardware architecture of the multi-port Type-C parallel dual-path splitting system in the acquisition system of this invention; Figure 5 This is a flowchart of the method for constructing a centerless Bluetooth Mesh self-organizing network in the data acquisition method of this invention; Figure 6 This is a flowchart of the hardware-driven seamless roaming data transmission method in the acquisition method of this invention; Figure 7This is a schematic diagram of the physical structure layout of the acquisition box unit in the acquisition system of this invention; Figure 8 This is a schematic diagram of the two working modes of the Type-C dual-path splitter hardware in the acquisition system of this invention; Figure 9 This is a schematic diagram of the multi-box network coverage and terminal roaming application scenario in the data acquisition system of this invention; Figure 10 This is a schematic diagram of cross-box data synchronization and global data interoperability within the network of the data acquisition system of this invention. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] Example 1 like Figure 1-10 As shown in this embodiment, the multi-box networked Bluetooth continuous coverage ECG data acquisition system includes several adapted acquisition box units and ECG acquisition terminals. Each acquisition box unit has an embedded industrial control host built in. Several acquisition box units construct a decentralized self-organizing network through an embedded Bluetooth Mesh networking module, and each acquisition box unit has equal status within the network. The embedded industrial control host is connected to a Bluetooth communication module group, a multi-port Type-C parallel dual-path splitter hardware, an independent fast charging power supply module, and a local storage module. The multi-port Type-C parallel dual-path splitter hardware has multiple Type-C interfaces, each interface corresponding to an independent dual-path splitter module and status detection hardware. The dual-path splitter module has built-in independent charging management circuits and data switching circuits, which are hard-connected to the independent fast charging power supply module and the embedded industrial control host, respectively.

[0023] In this embodiment, the compatible ECG acquisition terminal is a portable ECG patch or ECG strap device with real-time ECG signal acquisition and Bluetooth wireless data transmission capabilities, or equipped with a Type-C universal interface and supporting offline ECG data storage. No customization is required to connect and adapt to the acquisition box unit. The embedded industrial control host can use a Mini-ITX industrial motherboard, paired with an Intel Celeron or Atom series low-power processor, configured with ≥8GB of RAM and ≥128GB of SSD local storage. The local storage module is hard-connected to the embedded industrial control host via a SATA interface for storing real-time ECG data. The system can read data and preprocess results offline, meeting the computing power requirements for multi-module collaborative control and ECG data preprocessing. It supports two modes: single-box independent operation and multi-box network collaborative operation. A single box can independently complete the entire process of ECG data real-time reception, local preprocessing, storage, batch charging of ECG acquisition terminals, and offline data reading. Multi-box networking can realize continuous Bluetooth signal relay coverage and cross-box data synchronization in the monitoring area, providing a hardware foundation for seamless roaming of ECG acquisition terminals in mobile scenarios. It is fully adaptable to monitoring scenarios of different sizes, such as wards, small monitoring rooms, elderly care communities, and outdoor monitoring areas. All hardware modules use mature commercial standardized components.

[0024] Example 2 Based on Example 1, a network trigger button is provided on the outside of the acquisition box unit, and the network trigger button is connected to the GPIO interface of the embedded industrial control host; all acquisition box units in the network serve as data acquisition nodes and network relay nodes, and each acquisition box unit realizes point-to-point data transmission through a Bluetooth Mesh networking module; each acquisition box unit in the network maintains node status monitoring through periodic heartbeat packets, and a new acquisition box unit can automatically connect to the existing network after power-on.

[0025] In this embodiment, the network trigger button adopts a low-level trigger mode. After the button is pressed, the embedded industrial control host detects the level change of the GPIO interface and sends a network start command to the Bluetooth Mesh networking module. This solves the problems of cumbersome network configuration and reliance on external devices in the existing technology. The networking process uses Bluetooth standard broadcast channels 37, 38, and 39 for network discovery. After the network is completed, it switches to data channels 0-36 for data transmission. All Bluetooth Mesh networking modules of the acquisition boxes to be networked are pre-set with the same 128-bit AES encrypted network key and basic networking parameters. No manual configuration of network parameters is required throughout the networking process, and the overall time is ≤30 seconds. After the network is completed, each node sends a heartbeat packet every 5 seconds. Nodes that do not respond for 3 consecutive heartbeat cycles will be automatically removed from the network node list. The data routing path is automatically reconfigured. After the newly added acquisition box unit is powered on, it can automatically enter the network listening mode. After listening to the broadcast information of the existing network and completing the identity verification, it can automatically complete the seamless network access without manual intervention.

[0026] Example 3 Based on Example 1, the Bluetooth communication module group includes a Bluetooth gateway, a Bluetooth Mesh networking module, and a Bluetooth signal amplification unit. The Bluetooth gateway is hard-connected to the embedded industrial control host via a USB 2.0 or UART interface, the Bluetooth Mesh networking module is hard-connected to the embedded industrial control host via a USB 3.0 or SPI interface, and the Bluetooth signal amplification unit is connected in series between the signal output terminals of the Bluetooth gateway and the Bluetooth Mesh networking module and the signal antenna on the surface of the enclosure.

[0027] In this embodiment, the Bluetooth gateway receives real-time Bluetooth ECG data sent by the ECG acquisition terminal and transmits the data to the embedded industrial control host for preprocessing such as filtering and feature extraction. The Bluetooth Mesh networking module enables point-to-point wireless communication between multiple acquisition boxes, cross-box data synchronization, and roaming control signaling transmission within the network. Simultaneously, it establishes a data interaction channel between the industrial control host and the Bluetooth gateway, solving the problems of limited Bluetooth coverage and reliance on independent repeaters in existing technologies. The Bluetooth signal amplification unit can increase the effective Bluetooth coverage radius of a single box to 10-15 meters, ensuring signal transmission stability in multi-box networking scenarios. Each module completes a hard connection with the embedded industrial control host through a standardized interface, ensuring a stable data interaction channel. It can simultaneously realize the collaborative work of terminal data acquisition, networking communication, and signal amplification, providing complete hardware support for seamless roaming of ECG acquisition terminals in mobile scenarios.

[0028] Example 4 Based on Example 1, the multi-port Type-C parallel dual-channel shunt hardware has no fewer than 8 Type-C interfaces; the status detection hardware is a voltage detection circuit, the input of which is hard-connected to the CC pin of the corresponding Type-C interface, and the output of which is hard-connected to the control pin of the corresponding dual-channel shunt module.

[0029] In this embodiment, all Type-C interfaces are centrally located on the outside of the acquisition box, supporting simultaneous plugging and unplugging of multiple ECG acquisition terminals. The voltage detection circuit is built based on the LM393 voltage comparator. By detecting the voltage change of the CC pin of the Type-C interface in real time, it automatically identifies the access requirements of the ECG acquisition terminal, including charging only or reading offline data, and sends a link switching command to the corresponding dual-path shunt module to realize automatic link control at the hardware level. It eliminates the need for complex scheduling at the software level, solving the problems of software dependence and response delay in the identification of interface functions in existing technologies. It can simultaneously realize the access identification and independent control of multiple terminals, and the identification and control processes of each interface do not interfere with each other, greatly improving the management efficiency of batch ECG acquisition terminals.

[0030] Example 5 Based on Example 1, the output of the charging management circuit of the dual-channel shunt module is hard-connected to the power pin of the corresponding Type-C interface, and the output of the data switch circuit is hard-connected to the data pin of the corresponding Type-C interface; the power supply and control links of the dual-channel shunt module and the status detection hardware corresponding to each Type-C interface are independent of each other.

[0031] In this embodiment, the charging management circuit can use the TP4056 charging management chip, and the data switching circuit can use the TIHD3SS3220 high-speed switching chip. The charging link and data link are physically isolated and independently controlled. The conventional fast charging mode or the parallel reading and charging mode can be activated according to the terminal access requirements. This solves the core pain point of mutual exclusion between charging and data reading functions of the existing Type-C interface. In the conventional fast charging mode, the data link maintains a high impedance state, and the charging link can provide the terminal with a maximum of 20W of PD fast charging power. In the parallel reading and charging mode, the two links are activated in parallel. The charging link switches to a 5V / 2A low-interference stable power supply, and the data link realizes high-speed reading of offline ECG data. The power supply and control links of each interface are independent of each other. When a short circuit, overvoltage, overcurrent or other abnormality occurs in a single port, only the link of that interface is cut off, without affecting the normal operation of other interfaces, thus realizing hardware-level isolation protection.

[0032] Example 6 Based on Example 1, the independent fast charging power module is independent of the power supply system of the embedded industrial control host and is equipped with two independent power supply outputs; the first output is hard-connected to the power input terminal of the embedded industrial control host and the Bluetooth communication module group, and the second output is hard-connected to the charging management circuit input terminal of all dual-channel shunt modules.

[0033] In this embodiment, the independent fast charging power module adopts an industrial-grade AC-DC power module, which supports a wide voltage AC power input of 100-240V to adapt to different power supply environments. It solves the problems of charging conflict with motherboard power supply and limited charging power in existing technologies. The first internal power supply output specification is 12V / 3A, providing stable working power for internal hardware such as embedded industrial control host and Bluetooth communication module group. The second fast charging power supply output has a total power of ≥100W, supports PD fast charging protocol, and can meet the power requirements of at least 8 Type-C interfaces for simultaneous fast charging. Each interface can output a maximum of 20W fast charging power. The module has a built-in power dynamic allocation circuit, which can automatically allocate power resources according to the working mode of each interface to avoid power contention and insufficient power supply when multiple interfaces work at the same time. The power supply system independent of the embedded industrial control host can avoid power conflict and insufficient power problems, and ensure the synchronous and stable operation of charging and data transmission.

[0034] The multi-box network Bluetooth continuous coverage ECG data acquisition method disclosed in this invention is implemented based on the aforementioned multi-box network Bluetooth continuous coverage ECG data acquisition system, and specifically includes the following steps: 1. Deploy several data acquisition units within the target monitoring area. Power on and initialize all data acquisition units to be networked, enabling the Bluetooth Mesh networking module of each data acquisition unit to load preset unified networking basic parameters. Trigger the networking trigger button on any data acquisition unit, making that unit the initial initiating node. Periodically send networking invitation data packets through Bluetooth standard broadcast channels 37, 38, and 39. The remaining data acquisition units to be networked receive the data packets and verify them using a preset 128-bit AES network key. Then, they return node response data packets to the initial initiating node. The initial initiating node assigns a unique 16-bit Mesh short address to all nodes to be networked and generates a network node list. It broadcasts the core networking parameters to all nodes to be networked. After all nodes complete their local configuration and return network access confirmation information, the construction of a decentralized Bluetooth Mesh self-organizing network is completed. All data acquisition units within the network have equal status and function as both data acquisition nodes and network relay nodes.

[0035] 2. After powering on multiple ECG acquisition terminals, each ECG acquisition terminal automatically establishes a Bluetooth connection with the nearest acquisition box unit with the best signal strength, continuously transmitting the real-time acquired ECG data to the corresponding acquisition box unit. The acquisition box unit performs preprocessing such as filtering and feature extraction on the received ECG data through the embedded industrial control host, and then writes the data to the local storage module to complete local data storage. In the scenario of independent operation of a single box, ECG data acquisition and full-process management of all terminals can be completed directly through a single acquisition box unit.

[0036] 3. Connect the ECG acquisition terminal to the Type-C interface of the acquisition box unit via a Type-C data cable. The acquisition box unit detects the level change of the CC pin of the Type-C interface through the corresponding interface status detection hardware, identifies the connected ECG acquisition terminal, completes the PD fast charging protocol handshake with the connected ECG acquisition terminal, and identifies the terminal's access requirements. If only fast charging requirements are identified, the acquisition box unit conducts only the charging link through the dual-path current split module of the corresponding interface to provide the terminal with a maximum of 20W PD fast charging power. If both fast charging and offline data reading requirements are identified, the acquisition box unit conducts the physically isolated charging link and data link simultaneously through the dual-path current split module. The charging link switches to a 5V / 2A low-interference stable power supply mode, and the data link synchronously completes high-speed reading and local storage of offline ECG data in the terminal. Each Type-C interface is independently controlled and does not interfere with each other.

[0037] 4. When the ECG acquisition terminal moves between the coverage areas of different acquisition units, each acquisition unit acquires the Bluetooth RSSI value of the ECG acquisition terminal within its coverage area at a preset frequency of 20-50ms / time. Within the network, each acquisition unit exchanges the corresponding terminal's RSSI information via a self-organizing network every 200ms. When the currently serving acquisition unit detects that the terminal's RSSI value drops to -60dBm and remains there for 50ms, it transmits the ECG data that the terminal has not synchronized within the last 30 seconds to the target acquisition unit within the network with the strongest corresponding terminal RSSI value. When the currently serving acquisition unit detects that the terminal's RSSI value drops to -7... When the signal reaches 0dBm and lasts for 100ms, the terminal synchronizes its security key and communication channel information with the target acquisition box unit, and sends a link switching notification to the terminal. The terminal can quickly establish a Bluetooth connection with the target acquisition box unit without rescanning and pairing. At the same time, the terminal caches the ECG data generated during the link switching process in real time through its built-in ring buffer. After the link is established, the cached intermittent data is transmitted to the target acquisition box unit. The target acquisition box unit splices the pre-synchronized data, cached data, and real-time received data according to the timestamp, completing the seamless link switching and cross-box data synchronization, and synchronizing the terminal's complete ECG dataset to all acquisition box units in the network.

[0038] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0039] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0040] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A multi-box networked Bluetooth continuous coverage ECG data acquisition system, comprising several compatible acquisition box units and ECG acquisition terminals, wherein the acquisition box unit has a built-in embedded industrial control host, characterized in that: Several data acquisition units form a decentralized self-organizing network through a built-in Bluetooth Mesh networking module, with each data acquisition unit having equal status within the network. The embedded industrial control host is connected to a Bluetooth communication module group, a multi-port Type-C parallel dual-path current splitter hardware, an independent fast charging power supply module, and a local storage module. The multi-port Type-C parallel dual-path current splitter hardware contains multiple Type-C interfaces, each corresponding to an independent dual-path current splitter module and status detection hardware. The dual-path current splitter module has built-in independent charging management circuits and data switching circuits, which are hard-connected to the independent fast charging power supply module and the embedded industrial control host, respectively.

2. The Bluetooth continuous coverage ECG data acquisition system with multi-box networking as described in claim 1, characterized in that: The outer side of the data acquisition box unit is equipped with a network trigger button, which is connected to the GPIO interface of the embedded industrial control host. All data acquisition boxes within the network serve as data acquisition nodes and network relay nodes. Each data acquisition box unit achieves point-to-point data transmission through a Bluetooth Mesh networking module. Each data acquisition box unit within the network maintains node status monitoring through periodic heartbeat packets. New data acquisition boxes can automatically connect to the existing network after power-on.

3. The Bluetooth continuous coverage ECG data acquisition system with multi-box networking as described in claim 1, characterized in that: The Bluetooth communication module group includes a Bluetooth gateway, a Bluetooth Mesh networking module, and a Bluetooth signal amplification unit. The Bluetooth gateway is hard-connected to the embedded industrial control host via a USB 2.0 or UART interface, the Bluetooth Mesh networking module is hard-connected to the embedded industrial control host via a USB 3.0 or SPI interface, and the Bluetooth signal amplification unit is connected in series between the signal output terminals of the Bluetooth gateway and the Bluetooth Mesh networking module and the signal antenna on the surface of the enclosure.

4. The Bluetooth continuous coverage ECG data acquisition system with multi-box networking as described in claim 1, characterized in that: The multi-port Type-C parallel dual-channel shunt hardware has no fewer than 8 Type-C interfaces; the status detection hardware is a voltage detection circuit, the input of which is hard-connected to the CC pin of the corresponding Type-C interface, and the output of which is hard-connected to the control pin of the corresponding dual-channel shunt module.

5. The Bluetooth continuous coverage ECG data acquisition system with multi-box networking as described in claim 1, characterized in that: The output of the charging management circuit of the dual-channel shunt module is hard-connected to the power pin of the corresponding Type-C interface, and the output of the data switch circuit is hard-connected to the data pin of the corresponding Type-C interface; the power supply and control links of the dual-channel shunt module and the status detection hardware corresponding to each Type-C interface are independent of each other.

6. The Bluetooth continuous coverage ECG data acquisition system with multi-box networking as described in claim 1, characterized in that: The independent fast charging power module is independent of the power supply system of the embedded industrial control host and has two independent power outputs. The first output is hard-connected to the power input of the embedded industrial control host and the Bluetooth communication module group, and the second output is hard-connected to the charging management circuit input of all dual-channel shunt modules.

7. A method for continuous Bluetooth coverage ECG data acquisition using a multi-box network, employing the acquisition system described in any one of claims 1 to 6, characterized in that, Includes the following steps: S1: Deploy several data acquisition units, trigger the networking command, and build a decentralized self-organizing network through the Bluetooth Mesh networking module; S2: The ECG acquisition terminal establishes a Bluetooth connection with the nearest acquisition box unit and transmits the acquired ECG data to the corresponding acquisition box unit for storage. S3: Connect the ECG acquisition terminal to the Type-C interface of the acquisition box unit. The acquisition box unit controls the conduction status of the charging link and data link of the corresponding interface through the dual-path shunt module. S4: When the ECG acquisition terminal moves within the coverage area of ​​different acquisition box units, the acquisition box unit acquires the Bluetooth RSSI value of the terminal to complete link switching and cross-box data synchronization.

8. The Bluetooth continuous coverage ECG data acquisition method for multi-box networking according to claim 7, characterized in that: S1 specifically includes: S11: All data acquisition units to be networked are powered on, and the Bluetooth Mesh networking module of each data acquisition unit loads the preset unified networking basic parameters. S12: Trigger the network trigger button on any data acquisition unit. This data acquisition unit acts as the initial initiating node and sends a network invitation data packet through the Bluetooth standard broadcast channel. S13: After receiving and verifying the network invitation data packet, the remaining data acquisition box units to be networked return a node response data packet to the initial initiating node; S14: The initial initiating node assigns a unique Mesh short address to all nodes to be networked, broadcasts the core network parameters, and the network construction is completed after all nodes complete their local configuration and return network access confirmation information.

9. The Bluetooth continuous coverage ECG data acquisition method for multi-box networking according to claim 7, characterized in that: S3 specifically includes: S31: The acquisition box unit detects the change in the CC pin level of the Type-C interface through status detection hardware to identify the connected ECG acquisition terminal; S32: The data acquisition unit completes a fast charging protocol handshake with the connected ECG acquisition terminal and identifies the terminal's access requirements; S33: If only fast charging demand is detected, the acquisition box unit will only connect the charging link of the corresponding interface through the dual-path current splitting module; if fast charging and offline data reading demand are detected at the same time, the acquisition box unit will connect the charging link and data link of the corresponding interface at the same time through the dual-path current splitting module.

10. The Bluetooth continuous coverage ECG data acquisition method for multi-box networking according to claim 7, characterized in that: S4 specifically includes: S41: Each acquisition box unit acquires the Bluetooth RSSI value of ECG acquisition terminals within its coverage area at a preset frequency. Each acquisition box unit in the network exchanges the RSSI information of the corresponding terminal through a self-organizing network. S42: When the current service acquisition box unit detects that the terminal RSSI value has reached the first preset threshold, it transmits the ECG data within the preset time period of the terminal to the target acquisition box unit with the strongest corresponding RSSI value in the network. S43: When the current service acquisition box unit detects that the terminal RSSI value has reached the second preset threshold, it synchronizes the terminal's communication parameters with the target acquisition box unit and sends a link switching notification to the terminal. S44: The terminal establishes a Bluetooth connection with the target acquisition box unit and transmits the ECG data cached during the link switching process to the target acquisition box unit, completing cross-box data synchronization.

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