Wearable beidou positioning device with vital sign monitoring function

Abstract

The application provides a wearable Beidou positioning device with vital sign monitoring function, the wearable Beidou positioning device with vital sign monitoring function improves positioning accuracy through cooperation of a Beidou positioning module and a compensation formula, and meets complex scene accurate positioning requirements; a distributed vital sign monitoring unit realizes comprehensive acquisition of multidimensional data, and improves data accuracy; a special algorithm of an intelligent identification engine improves abnormal identification accuracy and fall identification accuracy, realizes intelligent risk grading early warning; customization design and weak network adaptation capability of a wireless communication module reduce data transmission error rate and improve receiving success rate; structural innovation of a flexible integrated terminal improves equipment adaptability and durability, and reduces maintenance cost.

Description

Technical Field

[0001] This invention relates to the field of positioning device technology, and in particular to a wearable Beidou positioning device with vital sign monitoring function. Background Technology

[0002] In daily life, some groups who need to work in high-risk areas or outdoors often need to use Beidou positioning devices to quickly determine the exact location of people outdoors because the network signal is usually poor in such environments.

[0003] In the process of realizing this invention, the inventors discovered that existing wearable positioning devices with vital sign monitoring functions have the following problems: positioning accuracy is greatly affected by environmental interference, making it difficult to meet the precise positioning needs in complex scenarios; the vital sign monitoring dimension is single, and the fit between the sensor structure and the carrier is poor, which easily leads to data distortion; the accuracy of identifying abnormal states and fall events is low, and there is a lack of intelligent analysis capabilities; data transmission reliability is insufficient in complex environments, and loss or delay is easy to occur; the device structure lacks protective performance, maintenance costs are high, and adaptability needs to be improved. Summary of the Invention

[0004] The purpose of this invention is to provide a wearable BeiDou positioning device with vital sign monitoring function to solve the problems existing in the background art.

[0005] This invention provides a wearable BeiDou positioning device with vital sign monitoring function, including a flexible integrated terminal, a BeiDou positioning module, a vital sign monitoring unit, an intelligent recognition engine, a wireless communication module, and a monitoring system. The BeiDou positioning module receives satellite signals and outputs location information by combining them with altitude data. The vital sign monitoring unit collects vital sign and motion status data. The intelligent recognition engine constructs a status recognition model based on sensor data to determine abnormal states and fall events. The wireless communication module realizes data transmission based on a standardized protocol. The monitoring system displays location, vital signs, and alarm information in real time.

[0006] Furthermore, the flexible integrated terminal includes a flexible substrate, a detachable sensing component, and a buffer protection structure.

[0007] Furthermore, the BeiDou positioning module includes a satellite signal receiver, an adjustable ceramic antenna, and a pseudorange error compensation unit. The pseudorange error compensation unit achieves multi-source error collaborative compensation through a dedicated formula, which is:

[0008] ;

[0009] in, Let be the compensated effective pseudorange of the i-th satellite at time t. This is the original pseudorange measurement value. =1.26×10⁷ is the ionospheric compensation coefficient. For carrier phase value, For BeiDou carrier frequency, =0.0085 is the tropospheric compensation coefficient. For height data, =8000 is the reference height of the troposphere. =0.012 is the multipath error compensation coefficient. For signal obstruction distance, =50 is the multipath baseline distance. At the speed of light, The overall clock bias is considered; after compensation, the positioning accuracy is ≤ ±0.65m, and the update frequency is ≥10Hz.

[0010] Furthermore, the vital signs monitoring unit adopts a distributed and flexible layout, including a main sensing area, two auxiliary sensing areas on both sides and an elastic connecting strip, and integrates heart rate, body temperature, respiratory rate sensors and acceleration sensors.

[0011] Furthermore, it also includes a distress call triggering component, which includes a manual trigger button and an automatic trigger linkage unit.

[0012] Furthermore, the state recognition model of the intelligent recognition engine achieves anomaly detection and fall recognition through a dedicated formula, wherein:

[0013] Anomaly detection formula:

[0014] ;

[0015] ;

[0016] In the above formula, This is an anomaly detection index. For signal reliability, These are measured values. This is the normal baseline value. , These are the upper and lower limits of the normal threshold. This is the risk weighting coefficient; The index for determining a fall. =2.8 is the acceleration fusion coefficient. It is the acceleration due to gravity. =1.8 is the non-linear correction exponent. =0.15 is the fusion coefficient for height variation. For the change in height, =0.02s is the sampling interval. =0.2s is the effective judgment threshold; when M(t)≥0.75, it is judged as a severe anomaly, and when F(t)≥3.2 and lasts for ≥0.2s, it is judged as a fall event.

[0017] Furthermore, the wireless communication module extends and customizes data fields based on the JT808 protocol, including vital sign fusion fields, device status fields, and risk warning fields.

[0018] Furthermore, the monitoring system adopts a VUE+Java architecture, including modules for data reception, real-time monitoring, alarm handling, historical tracing, and remote interaction.

[0019] Furthermore, the adjustable ceramic antenna includes a storage compartment, an elastic damping hinge, and an angle-grading locking mechanism.

[0020] Furthermore, the flexible integrated terminal also integrates a flexible battery and an emergency power-on interface.

[0021] The aforementioned wearable BeiDou positioning device with vital sign monitoring function improves positioning accuracy through the synergy of the BeiDou positioning module and compensation formula, meeting the precise positioning needs in complex scenarios; the distributed vital sign monitoring unit achieves comprehensive multi-dimensional data collection, improving data accuracy; the intelligent recognition engine's proprietary algorithm improves the accuracy of anomaly recognition and fall recognition, enabling intelligent risk classification and early warning; the customized design and weak network adaptability of the wireless communication module reduce the data transmission error rate and improve the reception success rate; the structural innovation of the flexible integrated terminal enhances the device's adaptability and durability, reducing maintenance costs. Attached Figure Description

[0022] Figure 1 This is a module diagram of a wearable Beidou positioning device with vital sign monitoring function according to the first embodiment of the present invention.

[0023] The following detailed description, in conjunction with the accompanying drawings, will further illustrate the present invention. Detailed Implementation

[0024] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of the invention are illustrated in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

[0025] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0027] Please see Figure 1 This invention provides a wearable BeiDou positioning device with vital sign monitoring function, including a flexible integrated terminal 10, a BeiDou positioning module 20, a vital sign monitoring unit 30, an intelligent recognition engine 40, a wireless communication module 50, and a monitoring system 60; the BeiDou positioning module 20 is used to receive satellite signals and output location information by combining altitude data; the vital sign monitoring unit 30 collects vital sign and motion status data; the intelligent recognition engine 40 constructs a status recognition model based on sensor data to determine abnormal states and fall events; the wireless communication module 50 realizes data transmission based on a standardized protocol; and the monitoring system 60 displays location, vital signs, and alarm information in real time.

[0028] The aforementioned wearable BeiDou positioning device with vital sign monitoring function improves positioning accuracy through the collaboration of BeiDou positioning module 20 and compensation formula, meeting the precise positioning needs in complex scenarios; the distributed vital sign monitoring unit 30 achieves comprehensive multi-dimensional data collection, improving data accuracy; the intelligent recognition engine 40's proprietary algorithm improves the accuracy of anomaly recognition and fall recognition, realizing intelligent risk classification and early warning; the customized design and weak network adaptability of wireless communication module 50 reduce data transmission error rate and improve reception success rate; the structural innovation of flexible integrated terminal 10 enhances device adaptability and durability, reducing maintenance costs.

[0029] In one embodiment of the present invention, the flexible integrated terminal 10 includes a flexible substrate, detachable sensing components, and a buffer protection structure. Specifically, it employs a flexible substrate for encapsulation and is fitted to a carrier, integrating the detachable sensing components and the buffer protection structure. The flexible substrate ensures wearability, while the detachable sensing components, through magnetic positioning and elastic conductive design, enable rapid replacement and stable signal transmission. The buffer protection structure enhances the device's durability in complex environments. Specifically, the flexible substrate is made of polyimide (PI), a material that combines excellent flexibility, high-temperature resistance, and mechanical strength, making it a core substrate material for wearable electronic devices. The detachable sensing components integrate four types of key sensors: a flexible photoelectric heart rate sensor, a flexible platinum resistance temperature sensor, a flexible strain gauge respiratory rate sensor, and a triaxial accelerometer, comprehensively covering the needs for collecting vital signs and motion status. The device employs a precise positioning structure using a ring-shaped magnetic clasp and a ring-shaped magnetic coil. The ring-shaped magnetic clasp is located on the back of the sensing component, and the ring-shaped magnetic coil is embedded in the magnetic positioning seat of the flexible substrate, with an adsorption force of 9-13N, ensuring it will not fall off during wear. The buffer and protective structure completely encloses the flexible substrate and core functional units, exposing only necessary interfaces (such as charging ports and manual alarm buttons) and the antenna area, ensuring comprehensive protection. The inner layer has a silicone honeycomb buffer layer, utilizing the mechanical properties of the honeycomb structure to absorb the impact of collisions and drops. The middle layer uses a modified polyetheretherketone (PEEK) material, ensuring temperature resistance ≥260℃ and achieving flame retardancy while allowing for rapid heat dissipation. The outer layer features elastic limiting bands made of spandex and nylon composite material, symmetrically arranged on both sides of the flexible integrated terminal, with Velcro and anti-slip protrusions at the ends to adapt to different body shapes and achieve a secure fixation with the protective clothing, while also absorbing high-frequency vibrations.

[0030] In one embodiment of the present invention, the BeiDou positioning module 20 includes a satellite signal receiver, an adjustable ceramic antenna, and a pseudorange error compensation unit. The pseudorange error compensation unit achieves multi-source error collaborative compensation through a dedicated formula, which is:

[0031] ;

[0032] in, Let be the compensated effective pseudorange of the i-th satellite at time t. This is the original pseudorange measurement value. =1.26×10⁷ is the ionospheric compensation coefficient. For carrier phase value, For BeiDou carrier frequency, =0.0085 is the tropospheric compensation coefficient. For height data, =8000 is the reference height of the troposphere. =0.012 is the multipath error compensation coefficient. For signal obstruction distance, =50 is the multipath baseline distance. At the speed of light, To compensate for the overall clock error, the positioning accuracy after compensation is ≤ ±0.65m, and the update frequency is ≥10Hz. Specifically, the pseudorange error compensation unit is implemented based on an STM32H750VB microcontroller.

[0033] In one embodiment of the present invention, the vital signs monitoring unit 30 adopts a distributed elastic layout, including a main sensing area, two auxiliary sensing areas on both sides and an elastic connecting strip, and integrates heart rate, body temperature, respiratory rate sensors and acceleration sensors.

[0034] In one embodiment of the present invention, a distress call triggering component is further included, which comprises a manual trigger button and an automatic trigger linkage unit. This is used to implement the distress call function.

[0035] In one embodiment of the present invention, the state recognition model of the intelligent recognition engine realizes anomaly detection and fall recognition through a specific formula, wherein:

[0036] Anomaly detection formula:

[0037] ;

[0038] ;

[0039] In the above formula, This is an anomaly detection index. For signal reliability, These are measured values. This is the normal baseline value. , These are the upper and lower limits of the normal threshold. This is the risk weighting coefficient; The index for determining a fall. =2.8 is the acceleration fusion coefficient. It is the acceleration due to gravity. =1.8 is the non-linear correction exponent. =0.15 is the fusion coefficient for height variation. For the change in height, =0.02s is the sampling interval. =0.2s is the effective judgment threshold; when M(t)≥0.75, it is judged as a severe anomaly, and when F(t)≥3.2 and lasts for ≥0.2s, it is judged as a fall event. Specifically, the intelligent recognition engine is implemented based on the NVIDIA Jetson Nano embedded AI module.

[0040] In one embodiment of the present invention, the wireless communication module extends and customizes data fields based on the JT808 protocol, including vital sign fusion fields, device status fields, and risk warning fields. Specifically, the wireless communication module uses a Quectel EC200S Pro module to implement the corresponding functions.

[0041] In one embodiment of the present invention, the monitoring system 60 adopts a Vue+Java architecture and includes modules for data reception, real-time monitoring, alarm handling, historical tracing, and remote interaction. Specifically, the monitoring system 60 is developed based on a Vue 3.0+SpringBoot 2.7 architecture.

[0042] In one embodiment of the present invention, the adjustable ceramic antenna includes a storage compartment, an elastic damping hinge, and an angle-grading locking mechanism.

[0043] In one embodiment of the present invention, the flexible integrated terminal also integrates a flexible battery and an emergency power-on interface.

[0044] The aforementioned wearable BeiDou positioning device with vital sign monitoring function improves positioning accuracy through the collaboration of BeiDou positioning module 20 and compensation formula, meeting the precise positioning needs in complex scenarios; the distributed vital sign monitoring unit 30 achieves comprehensive multi-dimensional data collection, improving data accuracy; the intelligent recognition engine 40's proprietary algorithm improves the accuracy of anomaly recognition and fall recognition, realizing intelligent risk classification and early warning; the customized design and weak network adaptability of wireless communication module 50 reduce data transmission error rate and improve reception success rate; the structural innovation of flexible integrated terminal 10 enhances device adaptability and durability, reducing maintenance costs.

[0045] Specifically, the vital signs monitoring unit 30 collects multi-dimensional data, the Beidou positioning module 20 outputs precise positioning data, the intelligent recognition engine 40 analyzes the data and determines the status through a dedicated formula, triggering an emergency call in case of abnormality or fall, and the wireless communication module 50 transmits relevant data to the monitoring system 60. The system enables real-time display and alarm handling, and management personnel can send instructions through the remote interaction module.

[0046] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A wearable BeiDou positioning device with vital sign monitoring function, characterized in that, The system includes a flexible integrated terminal, a BeiDou positioning module, a vital signs monitoring unit, an intelligent recognition engine, a wireless communication module, and a monitoring system. The BeiDou positioning module receives satellite signals and outputs location information by combining them with altitude data. The vital signs monitoring unit collects vital signs and motion status data. The intelligent recognition engine builds a status recognition model based on sensor data to determine abnormal states and fall events. The wireless communication module implements data transmission based on a standardized protocol. The monitoring system displays location, vital signs, and alarm information in real time.

2. The wearable Beidou positioning device with vital sign monitoring function according to claim 1, characterized in that, The flexible integrated terminal includes a flexible substrate, detachable sensing components, and a buffer protection structure.

3. The wearable Beidou positioning device with vital sign monitoring function according to claim 1, characterized in that, The BeiDou positioning module includes a satellite signal receiver, an adjustable ceramic antenna, and a pseudorange error compensation unit. The pseudorange error compensation unit achieves multi-source error collaborative compensation through a dedicated formula, which is: ； in, Let be the compensated effective pseudorange of the i-th satellite at time t. This is the original pseudorange measurement value. =1.26×10⁷ is the ionospheric compensation coefficient. For carrier phase value, For BeiDou carrier frequency, =0.0085 is the tropospheric compensation coefficient. For height data, =8000 is the reference height of the troposphere. =0.012 is the multipath error compensation coefficient. For signal obstruction distance, =50 is the multipath baseline distance. At the speed of light, The overall clock bias is considered; after compensation, the positioning accuracy is ≤ ±0.65m, and the update frequency is ≥10Hz.

4. The wearable Beidou positioning device with vital sign monitoring function according to claim 1, characterized in that, The vital signs monitoring unit adopts a distributed and flexible layout, including a main sensing area, two auxiliary sensing areas on both sides and an elastic connecting strip, and integrates heart rate, body temperature, respiratory rate sensors and acceleration sensors.

5. The wearable Beidou positioning device with vital sign monitoring function according to claim 1, characterized in that, It also includes a distress call triggering component, which includes a manual trigger button and an automatic trigger linkage unit.

6. The wearable Beidou positioning device with vital sign monitoring function according to claim 1, characterized in that, The intelligent recognition engine's state recognition model uses a proprietary formula to determine anomalies and identify falls, wherein: Anomaly detection formula: ； ； In the above formula, This is an anomaly detection index. For signal reliability, These are measured values. This is the normal baseline value. , These are the upper and lower limits of the normal threshold. This is the risk weighting coefficient; The index for determining a fall. =2.8 is the acceleration fusion coefficient. It is the acceleration due to gravity. =1.8 is the non-linear correction exponent. =0.15 is the fusion coefficient for high degree of variation. For the change in height, =0.02s is the sampling interval. =0.2s is the effective judgment threshold; when M(t)≥0.75, it is judged as a severe anomaly, and when F(t)≥3.2 and lasts for ≥0.2s, it is judged as a fall event.

7. The wearable Beidou positioning device with vital sign monitoring function according to claim 1, characterized in that, The wireless communication module extends and customizes data fields based on the JT808 protocol, including vital sign fusion fields, device status fields, and risk warning fields.

8. The wearable Beidou positioning device with vital sign monitoring function according to claim 1, characterized in that, The monitoring system adopts a VUE+Java architecture and includes modules for data reception, real-time monitoring, alarm handling, historical tracing, and remote interaction.

9. The wearable Beidou positioning device with vital sign monitoring function according to claim 1, characterized in that, The adjustable ceramic antenna includes a storage compartment, an elastic damping hinge, and an angle-grading locking mechanism.

10. The wearable Beidou positioning device with vital sign monitoring function according to claim 1, characterized in that, The flexible integrated terminal also integrates a flexible battery and an emergency power-on interface.

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