Intelligent safety helmet based on UWB positioning and star flash technology

Abstract

The utility model provides a kind of intelligent safety helmet based on UWB positioning and star flash technology, it is related to safety helmet technical field, including hat shell and the bandage being connected with hat shell, battery, main control module, UWB positioning module, star flash communication module, execution module and infrared sensor are equipped in hat shell, bandage is equipped with heart rate blood oxygen sensor and pressure sensor;Battery is electrically connected with the power supply end of main control module, UWB positioning module, star flash communication module, execution module, infrared sensor, heart rate blood oxygen sensor and pressure sensor are electrically connected with main control module, and star flash communication module is connected with server communication.The indoor accurate positioning is realized by UWB positioning module, accurate health data and accurate positioning data can be efficiently transmitted to server in time by star flash communication module, and workshop personnel is managed in time.

Description

Technical Field

[0001] This utility model relates to the field of smart safety helmet technology, and more specifically, to a smart safety helmet based on UWB positioning and star flash technology. Background Technology

[0002] With the rapid development of technologies such as the Internet of Things, big data, and cloud computing, smart wearable protective equipment is gradually becoming an important tool for ensuring personal safety. This equipment integrates sensor technology, data analysis technology, and communication technology, providing comprehensive safety protection for people's production and operations.

[0003] Traditional safety helmets primarily focus on physical safety, such as protective functions and comfort, but lack intelligent features, especially in real-time location communication, health monitoring, and wear detection. Smart safety helmets, as a type of intelligent wearable protective equipment, mainly use sensor technology, positioning technology, and communication technology to remotely manage information such as personnel location, physiological indicators, environmental parameters, and work processes. They also use voice and alarm devices to promptly alert and stop workers from violating regulations. Existing smart safety helmets have the following drawbacks:

[0004] 1. High communication costs and high power consumption. Existing smart safety helmets generally provide data transmission through 4G / 5G wide area network wireless communication technology, but they rely on the support of external base stations and suffer from problems such as high data traffic costs and uneven coverage. In industrial environments, especially in workshops with a lot of equipment, 4G / 5G signals may be interfered with or limited, leading to unstable communication. Furthermore, they suffer from drawbacks such as high base station setup costs and high power consumption.

[0005] 2. Limitations of Positioning Technologies. Satellite positioning technologies (such as GPS / BeiDou) are suitable for outdoor scenarios, but their signals are easily blocked in complex environments such as indoor factory workshops, tunnels, and mines, resulting in positioning errors of over 10 meters, which cannot meet the centimeter-level positioning requirements of industrial scenarios. Bluetooth positioning technology is low in cost, but it is susceptible to multipath interference, with an accuracy of only 2-3 meters. Wi-Fi positioning relies on infrastructure, has high power consumption, poor real-time performance, and is difficult to support dynamic tracking. Although UWB technology can achieve centimeter-level positioning accuracy (0.2-1 meter) and penetrate obstacles, existing UWB solutions in smart safety helmets are limited to a single positioning function and are not deeply integrated with high-speed data transmission technologies, resulting in the inability to simultaneously meet the requirements of high-precision positioning and sensor data transmission.

[0006] 3. Insufficient practicality and convenience. Existing smart safety helmets have all their circuitry located on the helmet shell, making them uncomfortable to wear and resulting in inaccurate health monitoring. Furthermore, health monitoring data requires transmission via communication, but the limitations of 4G / 5G wide area network wireless communication prevent timely and high-speed transmission of health monitoring data. Utility Model Content

[0007] The technical problem to be solved by this invention is that existing smart safety helmets cannot transmit detected health monitoring information and positioning information at high speed, resulting in untimely management of workshop personnel. In order to overcome the above-mentioned defects of the existing technology, this invention provides a smart safety helmet based on UWB positioning and star flash technology.

[0008] This utility model provides a smart safety helmet based on UWB positioning and star-flash technology, including a helmet shell and straps for securing it when worn, the straps being connected to the helmet shell.

[0009] The helmet shell contains a battery, a main control module, a UWB positioning module for accurate indoor positioning of the helmet user via an indoor base station, a star communication module, an execution module for safety prompts, and an infrared sensor for detecting whether the helmet is being worn. The straps are equipped with a heart rate and blood oxygen sensor and a pressure sensor for detecting whether the helmet is being worn correctly.

[0010] The battery is electrically connected to the power supply terminal of the main control module. The UWB positioning module, the star flash communication module, the execution module, the infrared sensor, the heart rate and blood oxygen sensor, and the pressure sensor are all electrically connected to the main control module. The star flash communication module is connected to the server for communication.

[0011] Compared with existing technologies, it has the following advantages: The infrared sensor for detecting whether a safety helmet is worn is placed inside the helmet shell, while the heart rate and blood oxygen sensors and the pressure sensor for detecting whether the helmet is worn correctly are placed on the straps. The execution module provides prompts, enabling more accurate detection of health data. The UWB positioning module achieves precise indoor positioning, and the StarFlash communication module efficiently transmits accurate health data and positioning data to the server in a timely manner, improving workshop personnel management and operational communication. It boasts advantages such as high precision, low cost, low power consumption, and high reliability.

[0012] In one possible implementation, the inner rear part of the cap shell is provided with a first groove for accommodating the battery and the main control module. The battery and the main control module are both fixed in the first groove. The first groove is provided with a first arc-shaped buckle plate for protecting the internal battery and the main control module. The first arc-shaped buckle plate is fixed to the inner side of the cap shell by a plurality of first fixing screws.

[0013] Compared with existing technologies, the heavier battery is embedded and fixed inside the rear part of the shell, while being covered by the first arc-shaped buckle, ensuring that it does not affect the wearer and improving comfort.

[0014] In one possible implementation, the main control module is an STM32 system motherboard.

[0015] In one possible implementation, the inner left side of the cap shell is provided with a second groove for accommodating the UWB positioning module and the execution module. The UWB positioning module and the execution module are both fixed in the second groove. The second groove is provided with a second arc-shaped buckle plate for protecting the internal UWB positioning module and the execution module. The second arc-shaped buckle plate is fixed to the inner side of the cap shell by a plurality of second fixing screws.

[0016] Compared with existing technologies, the UWB positioning module is embedded and fixed separately on the inner left side of the cap shell to prevent interference from other signals. At the same time, the embedded structure and the second arc-shaped buckle ensure that it does not affect the wearer and improves comfort.

[0017] In one possible implementation, the execution module is a buzzer for providing voice broadcast and alarm functions for the safety helmet.

[0018] In one possible implementation, the inner right side of the cap shell is provided with a third groove for accommodating the Star Flash communication module. The Star Flash communication module is fixed in the third groove. The third groove is provided with a third arc-shaped buckle for protecting the internal Star Flash communication module. The third arc-shaped buckle is fixed to the inner side of the cap shell by a plurality of third fixing screws.

[0019] Compared with existing technologies, the Star Flash communication module is embedded and fixed separately on the inner right side of the cap shell, preventing other circuits from affecting signal transmission during operation. At the same time, the embedded structure and the third arc-shaped buckle plate can ensure that it does not affect the wearer and improve comfort.

[0020] In one possible implementation, the inner front part of the cap shell is provided with a fourth groove for accommodating an infrared sensor, the infrared sensor is fixed in the fourth groove, and a fourth arc-shaped buckle plate is provided on the fourth groove for protecting the internal infrared sensor. The fourth arc-shaped buckle plate is fixed to the inner side of the cap shell by a plurality of fourth fixing screws.

[0021] Compared with existing technologies, embedding the infrared sensor inside the front of the helmet shell facilitates detection of the wearer's front, resulting in better detection. At the same time, the embedded structure and the fourth arc-shaped buckle ensure that it does not affect the wearer, improving comfort.

[0022] In one possible implementation, the inner side of the strap is provided with a first housing for accommodating a heart rate and oxygenation sensor, the heart rate and oxygenation sensor is fixed inside the first housing, the inner side of the first housing is provided with a through hole for heart rate and oxygenation sensor detection, and the first housing is movably connected to the strap by a loop.

[0023] Compared with existing technologies, the first outer shell protects the heart rate blood oxygen sensor. The first outer shell is placed inside the strap, so it directly contacts the wearer's cheek after wearing, which can detect the wearer's heart rate data more accurately. The strap connection makes it easy to disassemble.

[0024] In one possible implementation, the strap includes a first strap and a second strap. One end of the first strap is connected to the right side of the cap shell, and the other end of the first strap is connected to a first buckle. One end of the second strap is connected to the left end of the cap shell, and the other end of the second strap is connected to a second buckle. A second housing for accommodating a pressure sensor is provided between the first strap and the second strap. One end of the pressure sensor is fixedly connected to the first buckle by a first screw, and the other end of the pressure sensor is fixedly connected to the second buckle by a second screw.

[0025] Compared with existing technologies, the second outer shell protects the pressure sensor, which is connected in series between the first and second straps to detect in real time whether the straps are tight, thereby determining whether the helmet is worn correctly.

[0026] In one possible implementation, the pressure sensor is a stretchable sensor. Attached Figure Description

[0027] Figure 1 This is a system block diagram of an intelligent safety helmet based on UWB positioning and star flash technology according to this utility model;

[0028] Figure 2 This is a schematic diagram of the UWB tag positioning principle of a smart safety helmet based on UWB positioning and star flash technology according to this utility model;

[0029] Figure 3 This is a schematic diagram of the star-flash communication module of a smart safety helmet based on UWB positioning and star-flash technology according to this utility model;

[0030] Figure 4 This is a structural diagram of the battery and main control module installation of a smart safety helmet based on UWB positioning and star flash technology according to this utility model;

[0031] Figure 5 This is a structural diagram of the UWB positioning module and execution module of a smart safety helmet based on UWB positioning and star flash technology according to this utility model.

[0032] Figure 6 This is a structural diagram of the installation of the star-flash communication module of a smart safety helmet based on UWB positioning and star-flash technology according to this utility model.

[0033] Figure 7This is a diagram showing the infrared sensor installation structure of an intelligent safety helmet based on UWB positioning and star flash technology according to this utility model.

[0034] Figure 8 This is a structural diagram of the heart rate and blood oxygen sensor installation structure of a smart safety helmet based on UWB positioning and star flash technology according to this utility model;

[0035] Figure 9 This is a structural diagram of the pressure sensor installation of a smart safety helmet based on UWB positioning and starlight technology according to this utility model.

[0036] Explanation of reference numerals in the attached figures:

[0037] 1-Cap shell;

[0038] 2-Strap; 21-First strap; 211-First buckle; 22-Second strap; 221-First buckle;

[0039] 3-Battery; 31-First groove; 32-First arc-shaped buckle plate; 33-First fixing screw;

[0040] 4-Main control module;

[0041] 5-UWB positioning module; 51-Second groove; 52-Second arc-shaped buckle plate; 53-Second fixing screw;

[0042] 6-Star Flash Communication Module; 61-Third Groove; 62-Third Arc-shaped Buckle; 63-Third Fixing Screw;

[0043] 7-Execution Module;

[0044] 8-Infrared sensor; 81-Fourth groove; 82-Fourth arc-shaped buckle plate; 83-Fourth fixing screw;

[0045] 9-Heart rate and oxygen sensor; 91-First housing; 92-Through hole; 93-Lasso;

[0046] 10-Pressure sensor; 101-Second housing; 102-First screw; 103-Second screw. Detailed Implementation

[0047] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0048] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0049] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0050] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0051] See Figure 1 As shown in the figure, this application discloses a smart safety helmet based on UWB positioning and star flash technology, including a helmet shell 1 and a strap 2 for wearing and fixing, the strap 2 being connected to the helmet shell 1.

[0052] The helmet shell 1 contains a battery 3, a main control module 4, a UWB positioning module 5 for accurate indoor positioning of the helmet user via an indoor base station 5, a star flash communication module 6, an execution module 7 for safety reminders, and an infrared sensor 8 for detecting whether the helmet is being worn. The strap 2 contains a heart rate and blood oxygen sensor 9 for detecting the wearer's vital signs and a pressure sensor 10 for detecting whether the helmet is being worn correctly.

[0053] Battery 3 is electrically connected to the power supply terminal of the main control module 4. UWB positioning module 5, Star Flash communication module 6, execution module 7, infrared sensor 8, heart rate and blood oxygen sensor 9, and pressure sensor 10 are all electrically connected to the main control module 4. Star Flash communication module 6 is connected to the server for communication.

[0054] The main control module 4, acting as the system's central hub, is responsible for data processing and command coordination; the star-flash communication module 6 enables high-speed and stable wireless communication; the execution module 7 provides safety warning information; the infrared sensor 8 detects the helmet's wearing status via infrared sensing; the heart rate and blood oxygen sensor 9 continuously collects vital sign data; the pressure sensor 10 monitors head pressure distribution in real time; and the UWB positioning module 5 serves as a precise positioning module, achieving centimeter-level position tracking. All components connect to the main control module 4 through standardized interfaces, forming a complete intelligent monitoring system.

[0055] An infrared sensor 8 for detecting whether a helmet is being worn is placed inside the helmet shell, while a heart rate and blood oxygen sensor 9 and a pressure sensor 10 for detecting whether the helmet is being worn correctly are placed on the straps. The system provides prompts through the execution module 7, enabling more accurate detection of health data.

[0056] Indoor high-precision positioning is achieved through UWB positioning module 5, and high-speed communication is achieved through Star Flash communication module 6. The two are deeply integrated, with centimeter-level positioning capability, which meets the precise positioning needs of dangerous areas (such as high-voltage areas) in industrial scenarios, and realizes the intelligentization of indoor safety helmets.

[0057] See Figure 2 As shown, the UWB positioning module 5 uses UWB wireless positioning technology in the 6.5GHz band, achieving a positioning accuracy of ±0.1 meters. Four UWB base stations can be installed in the workshop, labeled UWB base station 0, UWB base station 1, UWB base station 2, and UWB base station 3. Base stations 0, 1, and 2 are located on the same plane, establishing a three-dimensional coordinate system. The coordinates of each base station are set as (X0, Y0), (X1, Y1), (X2, Y2), and (X3, Y3), respectively. The UWB positioning module 5 inside the smart safety helmet is a UWB tag. Each UWB tag transmits a pulse signal to each UWB base station. The base stations calculate the tag's position using the TDOA (Time Difference of Arrival) algorithm. UWB base station 0 connects to a server via a serial communication interface, providing real-time distances between the UWB tag and the four base stations. Software within the server calculates the tag's spatial coordinates based on these distances.

[0058] In this embodiment, to achieve data communication for the smart safety helmet, a StarFlash communication module 6 is used for communication. Each StarFlash communication module 6 can establish communication with the server, and finally the server parses and stores the data. Alternatively, see [link to documentation]. Figure 3As shown, the SparkLink communication module 6 adopts SparkLink communication technology, achieving communication on the 2.4GHz band based on the SparkLink SLE1.0 protocol, with a transmission rate of 1Mbps, latency <10ms, and bandwidth of 1MHz / 2MHz / 4MHz, supporting a network of 256 nodes. The main control module 4 is connected to the SparkLink communication module 6 via a UART asynchronous communication interface. Each smart safety helmet's SparkLink communication module 6 acts as a slave, transmitting data to the master SparkLink communication module wirelessly. The master SparkLink communication module connects to the server via a serial port (establishing a connection via Ethernet). The server software parses the transmitted data, which includes detection results from the infrared sensor 8, pressure sensor 10, and heart rate / blood oxygen sensor 9.

[0059] In this embodiment, UWB and Starflash operate in a frequency division (6.5GHz + 2.4GHz). Through dual-mode collaborative design, signal interference is avoided, while supporting the synchronous transmission of positioning and sensing data, thus achieving functional integration.

[0060] The helmet shell 1 is made of high-strength, lightweight carbon fiber material, which effectively protects the user's head from accidental injury while reducing the burden of prolonged wear, thus increasing worker acceptance. The inner side of the helmet shell 1 has recesses in all four directions (front, back, left, and right) to accommodate the battery 3, main control module 4, UWB positioning module 5, star-flash communication module 6, execution module 7, and infrared sensor 8. Specifically:

[0061] See Figure 4 As shown, the inner rear part of the cap shell 1 is provided with a first groove 31 for accommodating the battery 3 and the main control module 4. The battery 3 and the main control module 4 are both fixed in the first groove 31. The first groove 31 is provided with a first arc-shaped buckle plate 32 for protecting the internal battery 3 and the main control module 4. The first arc-shaped buckle plate 32 is fixed to the inner side of the cap shell 1 by a plurality of first fixing screws 33.

[0062] The relatively heavy battery 3 is embedded and fixed inside the rear part of the shell 1, and is covered by the first arc-shaped buckle 32 to ensure that it does not affect the wearer and improve comfort.

[0063] The main control module 4 is an STM32 system motherboard. Specifically, it can be an STM32F407 microcontroller, which collects signals from the execution module 7, infrared sensor 8, and pressure sensor 10 through its GPIO ports, collects signals from the heart rate and blood oxygen sensor 9 through its IIC ports, and transmits signals to the StarScan communication module 6 through its UART port. Battery 3 can be a 10,000 mAh rechargeable battery or a 3.7V 6000 mAh polymer lithium battery, powering the various modules of the helmet and improving its battery life.

[0064] See Figure 5As shown, the inner left side of the cap shell 1 is provided with a second groove 51 for accommodating the UWB positioning module 5 and the execution module 7. The UWB positioning module 5 and the execution module 7 are both fixed in the second groove 51. The second groove 51 is provided with a second arc-shaped buckle plate 52 for protecting the internal UWB positioning module 5 and the execution module 7. The second arc-shaped buckle plate 52 is fixed to the inner side of the cap shell 1 by a plurality of second fixing screws 53.

[0065] The UWB positioning module 5 is separately embedded and fixed to the inner left side of the helmet shell 1 to prevent interference from other signals. Simultaneously, the embedded structure and the second arc-shaped buckle 52 ensure that it does not affect the wearer, improving comfort. The execution module 7 is a buzzer used to provide voice announcements and alarm functions for the helmet.

[0066] See Figure 6 As shown, the inner right side of the cap shell 1 is provided with a third groove 61 for accommodating the Star Flash Communication Module 6. The Star Flash Communication Module 6 is fixed in the third groove 61. The third groove 61 is provided with a third arc-shaped buckle 62 for protecting the internal Star Flash Communication Module 6. The third arc-shaped buckle 62 is fixed to the inner side of the cap shell 1 by a plurality of third fixing screws 63.

[0067] The Star Flash Communication Module 6 is embedded and fixed separately on the inner right side of the cap shell 1 to prevent other circuits from affecting signal transmission during operation. At the same time, the embedded structure and the third arc-shaped buckle 62 can ensure that it does not affect the wearer and improve comfort.

[0068] See Figure 7 As shown, the inner front part of the cap shell 1 is provided with a fourth groove 81 for accommodating the infrared sensor 8. The infrared sensor 8 is fixed in the fourth groove 81. The fourth groove 81 is provided with a fourth arc-shaped buckle plate 82 for protecting the internal infrared sensor 8. The fourth arc-shaped buckle plate 82 is fixed to the inner side of the cap shell 1 by a plurality of fourth fixing screws 83.

[0069] The infrared sensor 8 is embedded in the inner front part of the cap shell 1, which facilitates detection of the wearer's front, that is, directly detecting the wearer's forehead position, resulting in better detection. At the same time, the embedded structure and the fourth arc-shaped buckle 82 ensure that it does not affect the wearer, improving comfort. All infrared sensors 8 capable of detecting infrared signals are applicable, and will not be described in detail here.

[0070] See Figure 8 and Figure 9 As shown, the inner side of the strap 2 is provided with a first housing 91 for accommodating the heart rate and blood oxygen sensor 9. The heart rate and blood oxygen sensor 9 is fixed inside the first housing 91. The inner side of the first housing 91 is provided with a through hole 92 for detection by the heart rate and blood oxygen sensor 9. The first housing 91 is movably connected to the strap 2 by a loop 93.

[0071] The first outer shell 91 protects the heart rate and blood pressure sensor 9. It is also positioned inside the strap 2, allowing direct contact with the wearer's face after wearing, thus enabling more accurate detection of heart rate data. The strap 93 facilitates easy disassembly. All heart rate and blood pressure sensors 9 capable of detecting heart rate are applicable; further details will not be provided here.

[0072] See Figure 9 As shown, the strap 2 includes a first strap 21 and a second strap 22. One end of the first strap 21 is connected to the right side of the cap shell 1, and the other end of the first strap 21 is connected to the first buckle 211. One end of the second strap 22 is connected to the left end of the cap shell 1, and the other end of the second strap 22 is connected to the second buckle 221.

[0073] A second housing 101 for accommodating the pressure sensor 10 is provided between the first strap 21 and the second strap 22. One end of the pressure sensor 10 is fixedly connected to the first buckle 211 by the first screw 102, and the other end of the pressure sensor 10 is fixedly connected to the second buckle 221 by the second screw 103.

[0074] The second outer shell 101 protects the pressure sensor 10. At the same time, the pressure sensor 10 is connected in series between the first strap 21 and the second strap 22, which can detect in real time whether the strap 2 is tight, and thus determine whether the safety helmet is worn correctly.

[0075] In this embodiment, the pressure sensor 10 is a stretchable sensor, which detects whether the strap is tight by measuring the degree of stretching. All stretchable sensors are applicable and will not be described in detail here.

[0076] This embodiment is a smart safety helmet that integrates high-precision positioning and low power consumption based on UWB positioning and star flash technology, which has extremely important practical significance for improving workshop personnel management and work communication.

[0077] In the description of the embodiments of this application, it should be noted that the terms "inner" and "outer" and other terms indicating direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0078] In the description of this application, the references to terms such as "an embodiment," "some embodiments," "in this embodiment," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0079] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A smart safety helmet based on UWB positioning and star-flash technology, comprising a helmet shell (1) and straps (2) for wearing and securing, the straps (2) being connected to the helmet shell (1), characterized in that, The helmet shell (1) is equipped with a battery (3), a main control module (4), a UWB positioning module (5) for accurately positioning the helmet user indoors via an indoor base station, a star flash communication module (6), an execution module (7) for safety reminders, and an infrared sensor (8) for detecting whether the helmet is being worn. The strap (2) is equipped with a heart rate and blood oxygen sensor (9) and a pressure sensor (10) for detecting whether the helmet is being worn correctly. The battery (3) is electrically connected to the power supply terminal of the main control module (4). The UWB positioning module (5), the star flash communication module (6), the execution module (7), the infrared sensor (8), the heart rate and blood oxygen sensor (9) and the pressure sensor (10) are all electrically connected to the main control module (4). The star flash communication module (6) is connected to the server for communication. Among them, the UWB positioning module (5) and the SparkLink communication module (6) work in different frequency bands. The UWB positioning module (5) works in the 6.5GHz frequency band, and the SparkLink communication module (6) works in the 2.4GHz frequency band based on the SparkLink SLE1.0 protocol to realize the synchronous transmission of positioning data and sensor data. The main control module (4) is an STM32F407 microcontroller, which collects the signals of the execution module (7), infrared sensor (8) and pressure sensor (10) through the GPIO port, collects the signal of the heart rate and blood oxygen sensor (9) through the IIC port, and transmits the signal to the SparkLink communication module (6) through the UART port. The inner side of the strap (2) is provided with a first shell (91) to accommodate the heart rate and blood oxygen sensor (9). The inner side of the first shell (91) is provided with a through hole (92). When worn, the heart rate and blood oxygen sensor (9) contacts the wearer's cheek through the through hole (92).

2. The smart safety helmet based on UWB positioning and star-flash technology according to claim 1, characterized in that, The inner rear part of the cap (1) is provided with a first groove (31) for accommodating the battery (3) and the main control module (4). The battery (3) and the main control module (4) are both fixed in the first groove (31). The first groove (31) is provided with a first arc-shaped buckle (32) for protecting the internal battery (3) and the main control module (4). The first arc-shaped buckle (32) is fixed to the inner side of the cap (1) by a plurality of first fixing screws (33).

3. The smart safety helmet based on UWB positioning and star-flash technology according to claim 1 or 2, characterized in that, The main control module (4) is an STM32 system motherboard.

4. The smart safety helmet based on UWB positioning and star-flash technology according to claim 1, characterized in that, The inner left side of the cap (1) is provided with a second groove (51) for accommodating the UWB positioning module (5) and the execution module (7). The UWB positioning module (5) and the execution module (7) are both fixed in the second groove (51). The second groove (51) is provided with a second arc-shaped buckle plate (52) for protecting the internal UWB positioning module (5) and the execution module (7). The second arc-shaped buckle plate (52) is fixed to the inner side of the cap (1) by a plurality of second fixing screws (53).

5. The smart safety helmet based on UWB positioning and star-flash technology according to claim 1 or 4, characterized in that, The execution module (7) is a buzzer used to provide voice broadcast and alarm functions for safety helmets.

6. The smart safety helmet based on UWB positioning and star-flash technology according to claim 1, characterized in that, The inner right side of the cap (1) is provided with a third groove (61) for accommodating the Star Flash Communication Module (6). The Star Flash Communication Module (6) is fixed in the third groove (61). The third groove (61) is provided with a third arc-shaped buckle plate (62) for protecting the internal Star Flash Communication Module (6). The third arc-shaped buckle plate (62) is fixed to the inner side of the cap (1) by a plurality of third fixing screws (63).

7. The smart safety helmet based on UWB positioning and star-flash technology according to claim 1, characterized in that, The inner front of the cap (1) is provided with a fourth groove (81) for accommodating an infrared sensor (8). The infrared sensor (8) is fixed in the fourth groove (81). The fourth groove (81) is provided with a fourth arc-shaped buckle (82) for protecting the internal infrared sensor (8). The fourth arc-shaped buckle (82) is fixed to the inner side of the cap (1) by a plurality of fourth fixing screws (83).

8. The smart safety helmet based on UWB positioning and star-flash technology according to claim 1, characterized in that, The inner side of the strap (2) is provided with a first housing (91) for accommodating the heart rate and blood oxygen sensor (9). The heart rate and blood oxygen sensor (9) is fixed inside the first housing (91). The inner side of the first housing (91) is provided with a through hole (92) for detection by the heart rate and blood oxygen sensor (9). The first housing (91) is movably connected to the strap (2) by a loop (93).

9. The smart safety helmet based on UWB positioning and star-flash technology according to claim 1, characterized in that, The strap (2) includes a first strap (21) and a second strap (22). One end of the first strap (21) is connected to the right side of the cap shell (1), and the other end of the first strap (21) is connected to the first buckle (211). One end of the second strap (22) is connected to the left end of the cap shell (1), and the other end of the second strap (22) is connected to the second buckle (221). A second housing (101) for accommodating a pressure sensor (10) is provided between the first strap (21) and the second strap (22). One end of the pressure sensor (10) is fixedly connected to the first buckle (211) by a first screw (102), and the other end of the pressure sensor (10) is fixedly connected to the second buckle (221) by a second screw (103).

10. The smart safety helmet based on UWB positioning and star-flash technology according to claim 9, characterized in that, The pressure sensor (10) is a stretchable sensor.

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