Helmet and helmet wearing detection system

By integrating Bluetooth modules and IoT sensors into the helmet, and utilizing infrared, light, and IMU sensors to detect helmet wearing status, the problem of frequent accidents caused by not wearing a helmet is solved, achieving accurate helmet wearing detection and improved safety.

CN224250811UActive Publication Date: 2026-05-19RAJAX NETWORK &TECHNOLOGY (SHANGHAI) CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
RAJAX NETWORK &TECHNOLOGY (SHANGHAI) CO LTD
Filing Date
2025-07-09
Publication Date
2026-05-19

AI Technical Summary

Technical Problem

In the current technology, accidents caused by not wearing helmets occur frequently, and there is a lack of effective means to detect helmet wearing.

Method used

Design a helmet with a built-in Bluetooth module and IoT sensors, including a wear detection module and a posture detection module. It uses infrared and light sensors to detect whether the helmet is being worn, and combines IMU sensors to detect the helmet's posture. Data processing is performed using a mobile phone and an IoT server to ensure the accuracy of the detection.

Benefits of technology

It improves the accuracy of helmet wearing detection, reduces interference with riders, and enhances riding safety and user experience.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224250811U_ABST
    Figure CN224250811U_ABST
Patent Text Reader

Abstract

The embodiment of the utility model provides a helmet and a helmet wearing detection system. The helmet comprises a helmet body, a Bluetooth module and an IOT sensor, wherein the Bluetooth module and the IOT sensor are fixed to the helmet body. A wearing space is defined by the helmet body. The helmet is matched with a mobile phone of a driver and a passenger through the Bluetooth module so as to detect the power-on state of the helmet; the IOT sensor comprises a wearing detection module and a posture detection module, the wearing detection module comprises an infrared sensor and a light sensor, when the helmet is in a power-on state, the infrared sensor detects whether approaching exists or not, the light sensor detects whether shielding exists or not, when the helmet is in a wearing state, the posture detection module detects the posture of the helmet, and when the helmet is in a power-on state, the posture detection module detects the posture of the helmet. By setting a plurality of detection conditions, the accuracy of wearing detection of the helmet is ensured.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This application relates to the field of helmets, and more particularly to a helmet and a helmet wearing detection system. Background Technology

[0002] A helmet is a head protection device for riders of electric vehicles or motorcycles. The primary purpose of a helmet is to protect the rider's head in the event of an impact, preventing or mitigating injury. However, with increasingly heavy traffic, accidents caused by not wearing helmets are frequent. Therefore, it is necessary to provide a helmet that can detect whether the rider is wearing one. Utility Model Content

[0003] This application provides a helmet and a helmet wearing detection system, which can detect whether the helmet is being worn.

[0004] This application provides a helmet, including a helmet body and a Bluetooth module and an IoT sensor fixed to the helmet body. The helmet body forms a wearing space. The Bluetooth module is fixed to the helmet body. The helmet is paired with the rider's mobile phone via the Bluetooth module to detect the helmet's power-on status. The IoT sensor is fixed to the helmet body and includes a wearing detection module and a posture detection module. The wearing detection module includes an infrared sensor and a light sensor. When the helmet is powered on, the infrared sensor detects whether there is proximity and the light sensor detects whether there is obstruction. When the helmet is worn, the posture detection module detects the helmet's posture.

[0005] Furthermore, the attitude detection module includes an IMU sensor.

[0006] Furthermore, the wearing detection module is located in front of the wearing space.

[0007] Furthermore, the Bluetooth module and / or the posture detection module are located at the rear of the wearing space.

[0008] Furthermore, the helmet includes a function extension device, which is detachably fixed to the helmet body. The function extension device includes a housing, at least a portion of which extends from the front of the wearing space to its left and right sides. The Bluetooth module, the wearing detection module, and the posture detection module are disposed in the housing.

[0009] Furthermore, the functional expansion device includes a first functional expansion device and a second functional expansion device. The first functional expansion device and the second functional expansion device are electrically connected through a first connecting line. The first connecting line is arranged above the wearing space along the front-back direction of the helmet. The wearing detection module is disposed in the first functional expansion device, and the Bluetooth module and the posture detection module are disposed in the second functional expansion device.

[0010] Furthermore, the first functional extension device also includes a microphone and a speaker, the microphone being located in front of the wearing space and the speaker being located on the left or right side of the wearing space 110.

[0011] Furthermore, the second functional expansion device also includes a battery and / or a main control module and / or a taillight and / or a barometer.

[0012] Furthermore, the second functional extension device also includes a photosensitive sensor and a control device, wherein the control device controls the taillight to turn off and on based on the detection result of the photosensitive sensor.

[0013] This application also provides a helmet wearing detection system, including an IoT server and the helmet. The IoT server is connected to the mobile network of the driver and passenger, and the mobile phone reports the power-on status of the helmet and the detection results of the IoT sensor to the IoT server.

[0014] The helmet according to this application includes a helmet body and a Bluetooth module and an IoT sensor fixed to the helmet body. The helmet is paired with the rider's mobile phone via the Bluetooth module to detect the helmet's power-on status. The IoT sensor includes a wearing detection module and a posture detection module. The wearing detection module includes an infrared sensor and a light sensor. When the helmet is powered on, the infrared sensor detects whether there is proximity and the light sensor detects whether there is obstruction. When the helmet is worn, the posture detection module detects the helmet's posture. By setting multiple detection conditions, the accuracy of helmet wearing detection is ensured. Attached Figure Description

[0015] Figure 1 A block diagram of a helmet-wearing detection system according to an exemplary embodiment of this application is shown;

[0016] Figure 2 A schematic diagram of a helmet according to an exemplary embodiment of this application is shown;

[0017] Figure 3 It shows Figure 2 An exploded view of the helmet shown;

[0018] Figure 4 It shows Figure 3An exploded view of the first functional expansion device shown;

[0019] Figure 5 It shows Figure 2 A schematic diagram of the inner lining of the helmet body shown;

[0020] Figure 6 It shows Figure 3 A schematic diagram of the first functional expansion device is shown;

[0021] Figure 7 It shows Figure 6 A schematic diagram of the first functional expansion device from another perspective;

[0022] Figure 8 It shows Figure 3 A schematic diagram of the helmet body shown;

[0023] Figure 9 It shows Figure 8 An exploded view of the helmet body shown;

[0024] Figure 10 It shows Figure 3 A schematic diagram showing the connection between the first and second functional expansion devices of the helmet;

[0025] Figure 11 It shows Figure 8 An exploded view of the second functional expansion device shown;

[0026] Figure 12 It shows Figure 8 The diagram shows the second functional expansion device after it is fixed to the first fixing member;

[0027] Figure 13 It shows Figure 8 An enlarged view of the circled area at point A in the schematic diagram shown;

[0028] Figure 14 It shows Figure 12 A schematic diagram from another perspective. Detailed Implementation

[0029] The technical solutions in the embodiments (or "implementations") of this application will be clearly and completely described herein with reference to the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0030] If there are terms related to directional indication or positional relationship in the embodiments of the present application (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, lateral, length, width, counterclockwise, clockwise, axial direction, radial direction, circumferential direction, etc.), such terms are only used to explain the relative positional relationship, movement conditions, etc. between components in a specific posture (as shown in the attached drawings); if the specific posture changes, the directional indication or positional relationship will also change accordingly. In addition, the terms "first", "second", etc. involved in the embodiments of the present application are only for the purpose of convenient description and cannot be construed as indicating or implying relative importance.

[0031] Referring Figures 1 to 2 , an embodiment of the present application provides a helmet wearing detection system, including a helmet 1 and an IOT server 2. The helmet 1 includes a helmet main body 11, a Bluetooth module 12 fixed to the helmet main body 11, and an IOT sensor 13. The helmet main body 11 encloses a wearing space 111.

[0032] The helmet 1 is paired with the driver or rider's mobile phone 3 through the Bluetooth module 12 to detect the power-on state of the helmet 1. The helmet 1 being paired with the driver or rider's mobile phone 3 through the Bluetooth module 12 includes successful Bluetooth connection and the helmet 1 being scannable by the driver or rider's mobile phone 3.

[0033] The IOT sensor 13 includes a wearing detection module 131 and an attitude detection module 132. The wearing detection module 131 includes an infrared sensor and a light sensor. The infrared sensor detects whether there is an approach, and the light sensor detects whether there is an occlusion; when the helmet is in the wearing state, the attitude detection module 132 detects the attitude of the helmet 1. By setting multiple detection conditions, the accuracy of the wearing detection of the helmet 1 is ensured; at the same time, if it is detected that the helmet 1 is in the wearing state, the number of spot checks on the driver or rider for wearing the helmet through the mobile phone can also be reduced, so as to reduce the interference to the driver or rider's operation and improve the compliance experience of the driver or rider.

[0034] The infrared sensor is a sensor with infrared rays as the medium and can detect whether there is an object approaching. When the driver or rider wears the helmet 1, the infrared sensor is close to the driver or rider's head, and it can be determined that the driver or rider wears the helmet 1.

[0035] The light sensor includes an infrared emitter and an infrared receiver, and the two are arranged in a transmissive or reflective layout. When the driver or rider wears the helmet 1, the helmet 1 fits the head, the infrared light is blocked by the head skin or the inner lining of the helmet 1, and the light intensity received by the infrared receiver weakens, and the output electrical signal changes. When the driver or rider does not wear the helmet 1, the infrared light directly irradiates into the air or the environment, and the light intensity received by the infrared receiver is stronger, and there is no obvious change in the electrical signal.

[0036] In one implementation, the infrared sensor detects proximity, including the infrared sensor detecting an object obstructing its path within 2 cm in front of it.

[0037] In one implementation, the light sensor detects occlusion, including light sensitivity values ​​less than 10 LUX.

[0038] In one embodiment, the posture detection module 132 includes an IMU sensor. The IMU sensor detects whether the posture of the helmet 1 meets the requirements for normal wearing. The normal wearing posture includes: the helmet 1 tilting left and right at an angle of less than or equal to 50 degrees, tilting forward at an angle of less than or equal to 60 degrees, and tilting backward at an angle of less than or equal to 40 degrees.

[0039] The rider's mobile phone 3 is connected to the IoT server 2 via the network. The mobile phone 3 reports the power-on status of the helmet 1 and the detection results of the IoT sensor 13 to the IoT server 2. The IoT server 2 processes the data to accurately determine whether the helmet 1 is being worn. If it detects that the rider is not wearing a helmet during the ride, it can take corresponding measures to improve the safety of the ride.

[0040] In one implementation, the acceleration data of the driver's mobile phone 3 is transmitted to the IoT server 2.

[0041] In one implementation, the process by which the IoT server 2 determines whether the helmet 1 is being worn is as follows:

[0042] After helmet 1 is powered on, if the rider's mobile phone 3 can scan the Bluetooth of helmet 1, the rider's mobile phone 3 transmits the Bluetooth scanning information to IoT server 2, and then executes the wearing detection module 131 detection step. The result of the wearing detection module 131 detection is transmitted to IoT server 2 through mobile phone 3. If IoT server 2 determines that helmet 1 is in the wearing state based on the result of wearing detection module 131 detection, then executes the posture detection module 132 detection step. The result of posture detection module 132 detection is transmitted to IoT server 2 through mobile phone 3. If IoT server 2 determines that helmet 1 is in the wearing state based on the result of posture detection module 132 detection, then helmet 1 is determined to be in the wearing state.

[0043] When the helmet 1 is powered on, it is initialized, including initializing the Bluetooth module 12, the infrared sensor, the light sensor and the posture detection module 132.

[0044] In one implementation, the process by which the IoT server 2 determines whether the helmet 1 is being worn is as follows:

[0045] If the Bluetooth of the rider's mobile phone 3 fails to scan the Bluetooth of the helmet 1, the rider's mobile phone 3 transmits the information that the Bluetooth has not been scanned to the IOT server 2, and then the step of the IOT server 2 judging the acceleration of the mobile phone 3 is executed.

[0046] If the IOT server 2 determines that the helmet 1 is in an un-worn state according to the detection result of the wearing detection module 131, the step of the IOT server 2 judging the acceleration of the mobile phone 3 is also executed.

[0047] If the IOT server 2 determines that the helmet 1 is in an un-worn state according to the detection result of the attitude detection module 132, the step of the IOT server 2 judging the acceleration of the mobile phone 3 is also executed.

[0048] The step of the IOT server 2 judging the acceleration of the mobile phone 3 includes: if the acceleration of the mobile phone 3 is greater than or equal to 3 m / s, the IOT server 2 determines that it is in a riding state and the helmet is not worn, and the rider's mobile phone 3 reminds the rider: The helmet is not worn, please wear the helmet to ride. If the acceleration of the mobile phone 3 is less than 3 m / s, the IOT server 2 determines that it is not in a riding state.

[0049] See Figures 2 to 4 , the helmet 1 includes a function expansion device 14 fixed to the helmet main body 11. The function expansion device 14 includes a housing 140, and at least part of the housing 140 extends from the front of the wearing space 111 to its left and right sides, and the Bluetooth module 12, the wearing detection module 131 and the attitude detection module 132 are arranged in the housing 140.

[0050] In one embodiment, the function expansion device 14 is detachably fixed to the helmet main body 11, which is convenient for maintaining the function expansion device 14; the function expansion device 14 can also be replaced after being detached to reduce the use cost; after the function expansion device 14 is detached, it does not affect the basic wearing function of the helmet 1 and can be used as an ordinary helmet; the helmet main body 11 can be used as an ordinary helmet, and consumers can purchase the function expansion device 14 by themselves according to their personal preferences for assembly, which is more user-friendly.

[0051] In some embodiments, the function expansion device 14 includes a first function expansion device 15 and a second function expansion device 16. The wearing detection module 131 is arranged in the first function expansion device 15, and the Bluetooth module 12 and the attitude detection module 132 are arranged in the second function expansion device 16. The function expansion device 14 is convenient for processing and molding, and is also convenient for assembling the function expansion device 14 with the helmet main body 11.

[0052] In some embodiments, the first function expansion device 15 and the second function expansion device 16 are electrically connected by a first connecting wire 17, and the first connecting wire 17 is arranged above the wearing space ily111 along the front-back direction of the helmet 1.

[0053] In some embodiments, the first functional extension device 15 includes a first housing 150 extending circumferentially to the left and right sides of the wearing space 111. The first functional extension device 15 includes a microphone 151 and a speaker 152 fixed to the first housing 150. The microphone 151 is located in front of the wearing space 111, and the speaker 152 is located on the left or right side of the wearing space 111.

[0054] The first functional extension device 15 includes a microphone 151 and a speaker 152, which can answer phone calls and increase cycling safety. At the same time, the first housing 150 extends to the left and right sides along the circumferential direction of the wearing space 111. The microphone 151 and the speaker 152 are fixed to the first housing 150. The first housing 150 can be fixed to the helmet body 11, which increases the convenience of assembly and, correspondingly, the convenience of disassembly.

[0055] The wear detection module 131 is fixed to the first housing 150 and is located in front of the wear space 111. The wear detection module 131 may also be located behind, above, or on the left or right sides of the wear space 111.

[0056] In one embodiment, after the helmet 1 is worn, the wearing detection module 131 is located above the microphone 151, and the microphone 151 is close to the wearer's mouth to ensure sound pickup effect.

[0057] In some embodiments, after the helmet 1 is worn, the microphone 151 is positioned downwards and the wearing detection module 131 is positioned facing into the wearing space 111.

[0058] In some embodiments, the first housing 150 is provided with a sound outlet 1500 so that the sound emitted by the speaker 152 can pass through. When the helmet 1 is worn, the sound outlet 1500 is set downward and is close to the wearer's ear to ensure sound effect.

[0059] In some embodiments, the first functional extension device 15 includes a front illumination light (not shown) located in front of the helmet body 11 to provide illumination in low light conditions, providing convenience and preventing injuries caused by falls or bumps due to insufficient light; it can also provide nighttime illumination to facilitate viewing the receipt information on the takeout order at night and to find the corresponding house number of the takeout address more quickly at night, thus speeding up the delivery process.

[0060] In some embodiments, the helmet body 11 includes a liner 112 that forms a wearing space 111. The liner 112 includes a receiving groove 1124 in which at least a portion of the first shell 150 is received. The first shell 150 can act as a protective shell to protect the liner 112.

[0061] The inner lining 112 refers to the internal buffer layer, whose main function is to absorb the impact force of external impacts to protect the head. The inner lining 112 can be made of foam materials, fibrous materials, etc.

[0062] In some embodiments, the helmet body 11 includes an outer shell 113, which can be made of relatively hard materials such as plastic or carbon fiber. In case of an accidental collision, the outer shell 113 is the first line of defense to protect the head and is used to disperse the impact force.

[0063] In some embodiments, the inner lining 112 includes a first bottom surface 1122 extending along its thickness direction. The second bottom surface 1501 of the first housing 150 is flush with the first bottom surface 1122 of the inner lining 112. The second bottom surface 1501 can also be indented relative to the first bottom surface 1122, and the first housing 150 does not protrude so as not to affect the wearing comfort.

[0064] See Figures 4 to 10 , in some embodiments, the inner lining 112 includes a first side wall 1123 surrounding the outside of the receiving groove 1124, and the first bottom surface 1122 is arranged on the first side wall 1123. The first housing 150 includes a bottom wall 1502 and a second side wall 1503 extending from the bottom wall 1502, and the second bottom surface 1501 is arranged on the bottom wall 1502. A receiving space 11230 is provided between the second side wall 1503, the first side wall 1123 and the bottom wall 1502 for receiving the second connecting wire 1521 connected to the speaker 152.

[0065] In some embodiments, the receiving space 11230 is U-shaped with one side open. Removing the first functional expansion device 15 can expose the second connecting wire 1521, which is convenient for maintenance and saves the assembly and disassembly processes.

[0066] In some embodiments, the receiving space 11230 can also be enclosed on all sides. Even if the first functional expansion device 15 is removed, the second connecting wire 1521 is in a hidden state to protect the second connecting wire 1521.

[0067] In some embodiments, the first housing 150 includes a baffle 1504 that is separately arranged from and fixed to the bottom wall 1502, and the sound outlet hole 1500 is arranged on the baffle 1504.

[0068] In some embodiments, the sound outlet hole 1500 can also be directly arranged on the bottom wall 1502.

[0069] In some embodiments, the first housing 150 includes a third sidewall 1505 extending from the bottom wall 1502. The third sidewall 1505 is located inside and abuts against the first sidewall 1123. A second connecting wire 1521 connected to the speaker 152 is located between the second sidewall 1503 and the third sidewall 1505. The provision of the third sidewall 1505 increases the strength of the first functional extension device 15.

[0070] In some embodiments, the first housing 150 includes a column 1506 extending from the bottom wall 1502, and the microphone 151 is housed within the space enclosed by the column 1506.

[0071] In some embodiments, the first housing 150 includes a protrusion 1507 extending from the bottom wall 1502, and the wear detection module 131 is fixed to the protrusion 1507.

[0072] In some embodiments, the inner surface of the protrusion 1507 smoothly transitions to the inner surface of the liner 112 to increase wearing comfort.

[0073] In some embodiments, the two opposite free ends of the first housing 150 are respectively provided with a first extension 15081 and a second extension 15082, and a pair of speakers 152 are located in the space enclosed by the first extension 15081 and the second extension 15082.

[0074] In some embodiments, the first extension 15081 is located inside the liner 112.

[0075] In some embodiments, the first function extension device 15 includes control keys 153 fixed to the first housing 150, whose functions include, but are not limited to, answering calls, hanging up calls, and adjusting volume. The control keys 153 are exposed on the helmet body 11 for easy operation.

[0076] In some embodiments, the control key 153 is disposed on the second extension 15082. The liner 112 is provided with a storage groove 1120, and a portion of the second extension 15082 is located inside the liner 112, while a portion is housed in the storage groove 1120, so that the control key 153 is exposed.

[0077] In some embodiments, the control button 153 is located on the left or right side of the helmet body 11.

[0078] In some embodiments, the first housing 150 includes a cover plate 1509 that can be opened or removed to facilitate maintenance of the speaker 152.

[0079] In some embodiments, the helmet body 11 includes a fixing member 114 fixed to the inner lining 112, and the first functional expansion device 15 and / or the second functional expansion device 16 are detachably fixed to the fixing member 114 to increase the stability of the first functional expansion device 15 and / or the second functional expansion device 16 and protect the inner lining 112.

[0080] In some embodiments, the fixing member 114 is integrally formed with the inner lining 112, which has a simple structure, low cost and saves the assembly process.

[0081] In some embodiments, a plurality of fixing members 114 are provided, and the plurality of fixing members 114 are arranged along the circumferential direction of the inner lining 112 to increase the stability of the first functional expansion device 15.

[0082] In some embodiments, the helmet body 11 includes a pair of fixing members 114 located on the left and right sides of the wearing space 111, and the functional expansion device 14 is fixed to the pair of fixing members 114 by screws and / or buckles to facilitate the assembly and disassembly of the functional expansion device 14.

[0083] See Figures 10 to 11 , in some embodiments, the second functional expansion device 16 is located behind the wearing space 111.

[0084] In some embodiments, the first functional expansion device 15 is assembled to the helmet body 11 along a first direction, and the second functional expansion device 16 is assembled to the helmet body 11 along a second direction, and the first direction is perpendicular to the second direction.

[0085] In some embodiments, the first direction is the vertical direction and the second direction is the horizontal direction.

[0086] In some embodiments, the second functional expansion device 16 is located inside the inner lining 112.

[0087] In some embodiments, the second direction is the direction from the front to the back of the helmet 1.

[0088] In some embodiments, the second functional expansion device 16 includes a second housing 161 and a battery 162 and / or a taillight 163 and / or a charging interface and / or a main control module fixed to the second housing 161.

[0089] In some embodiments, the second functional expansion device 16 includes a main board 164, and the main control module is disposed on the main board 164. The main control module can also be electrically connected to the main board 164 through a connecting wire.

[0090] The battery 162 supplies power to the helmet 1, and the taillight 163 is located behind the helmet body 11 and can be used for warning, improving the safety of night riding.

[0091] In some embodiments, the second functional expansion device 16 includes a photosensitive sensor (not shown) and a control device (not shown). The control device controls the extinguishing and lighting of the taillight 163 according to the detection result of the photosensitive sensor to save energy and improve the battery life of the helmet 1.

[0092] In some embodiments, the second functional expansion device 16 includes a lamp cover 165 fixed to the second housing 161, and the lamp cover 165 allows the light emitted by the taillight 163 to pass through.

[0093] Refer Figure 3 to Figure 5 and, in some embodiments, the inner lining 112 is provided with a hole 1121 for the lamp cover 165 to pass through, and the outer surface of the lamp cover 165 protrudes from the helmet body 11 or is flush with the outer surface of the helmet body 11.

[0094] In some embodiments, the charging interface is used to charge the battery 162, and the charging interface includes but is not limited to a TYPE-C interface.

[0095] In some embodiments, the battery 162 is also replaceable.

[0096] In some embodiments, the second functional expansion device 16 includes a first connector (not shown), and the first connector is electrically connected to the main board 164. One end of the first connecting wire 17 is connected with a second connector (not shown), and the first connector and the second connector are pluggable and detachable, which is convenient for maintaining the first functional expansion device 15 and the second functional expansion device 16.

[0097] In some embodiments, the other end of the first connecting wire 17 is electrically connected to a third connector (not shown), and one end of the second connecting wire 1521 is electrically connected to a fourth connector (not shown), and the third connector and the fourth connector are pluggable and detachable, which is convenient for maintaining the speaker 152.

[0098] In some embodiments, the microphone 151 is electrically connected to the fourth connector through a second connecting wire (not shown), which is convenient for maintaining the microphone 151.

[0099] In some embodiments, the wearing detection module 131 is electrically connected to the fourth connector through a fourth connecting wire (not shown), which is convenient for maintaining the wearing detection module 131.

[0100] In some embodiments, the microphone 151, the speaker 152, and the wearing detection module 131 can be directly connected to the main board 164 through connecting wires.

[0101] Refer Figures 12 to 14 to, the fixing member 114 includes a first fixing member 1141, and the second functional expansion device 16 is fixed to the first fixing member 1141.

[0102] The first fixing member 1141 includes a back plate portion 1142 and a pair of side plate portions 1143 extending from opposite sides of the back plate portion 1142. The second functional expansion device 16 is located in the space surrounded by the back plate portion 1142 and the pair of side plate portions 1143 to increase the stability of the second functional expansion device 16.

[0103] An ear portion 1144 is provided on the side plate portion 1143 above the second functional expansion device 16. The ear portion 1144 and the second housing 161 are fixed by screws 166. A latching portion 11431 for latching and fixing with the second housing 161 is provided on the side plate portion 1143.

[0104] In some embodiments, one or more ear portions 1144 may be provided, and the present application does not limit the number of ear portions 1144.

[0105] When assembling the second functional expansion device 16, first place the second functional expansion device 16 into the space surrounded by the back plate portion 1142 and the pair of side plate portions 1143, latch and fix the latching portion 11431 with the second housing 161, and then fix the second functional expansion device 16 with screws 166 to increase the stability of the second functional expansion device 16; moreover, fixing the second functional expansion device 16 with the latching portion 11431 first also facilitates the assembly of the screws 166 to improve the assembly efficiency.

[0106] In some embodiments, the latching portion 11431 and the screws 166 may be selectively provided.

[0107] Refer Figure 2 , in some embodiments, the helmet 1 includes a head circumference adjuster 18 for adjusting according to the size of the head circumference to suit people with different head circumferences. The head circumference adjuster 18 is fixed to the inner liner 112, and the head circumference adjuster 18 is located inside the second functional expansion device 16.

[0108] It should be noted that the technical solutions or technical features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of the present application is not limited to the precise structures described in the above embodiments and shown in the drawings; all modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A helmet, characterized in that, include: The helmet body forms the wearing space; A Bluetooth module is fixed to the helmet body. The helmet is paired with the rider's mobile phone via the Bluetooth module to detect the helmet's power-on status. An IoT sensor is fixed to the helmet body. The IoT sensor includes a wear detection module and a posture detection module. The wear detection module includes an infrared sensor and a light sensor. When the helmet is powered on, the infrared sensor detects whether someone is nearby and the light sensor detects whether there is any obstruction. When the helmet is worn, the posture detection module detects the posture of the helmet.

2. The helmet according to claim 1, characterized in that, The attitude detection module includes an IMU sensor.

3. The helmet according to claim 1, characterized in that, The wear detection module is located in front of the wear space.

4. The helmet according to claim 3, characterized in that, The Bluetooth module and / or the posture detection module are located at the rear of the wearing space.

5. The helmet according to any one of claims 1 to 4, characterized in that, The helmet includes a functional extension device, which is detachably fixed to the helmet body. The functional extension device includes a housing, at least a portion of which extends from the front of the wearing space to its left and right sides. The Bluetooth module, the wearing detection module, and the posture detection module are disposed in the housing.

6. The helmet according to claim 5, characterized in that, The functional expansion device includes a first functional expansion device and a second functional expansion device. The first functional expansion device and the second functional expansion device are electrically connected through a first connecting line. The first connecting line is arranged above the wearing space along the front-back direction of the helmet. The wearing detection module is disposed in the first functional expansion device, and the Bluetooth module and the posture detection module are disposed in the second functional expansion device.

7. The helmet according to claim 6, characterized in that, The first functional extension device also includes a microphone and a speaker, with the microphone located in front of the wearing space and the speaker located on the left or right side of the wearing space.

8. The helmet according to claim 6, characterized in that, The second functional expansion device also includes a battery and / or a main control module and / or a taillight and / or a barometer.

9. The helmet according to claim 8, characterized in that, The second functional extension device also includes a photosensitive sensor and a control device, wherein the control device controls the taillight to turn off and on based on the detection result of the photosensitive sensor.

10. A helmet wearing detection system, characterized in that, The device includes an IoT server and a helmet as described in any one of claims 1 to 9, wherein the IoT server is connected to the mobile network of the driver or passenger, and the mobile phone reports the power-on status of the helmet and the detection results of the IoT sensor to the IoT server.