Helmet and cycling equipment with wireless charging function

Abstract

Embodiments of this disclosure provide a helmet and cycling device with wireless charging functionality. The helmet includes: a load; a wireless receiving coil adapted to convert an alternating magnetic field into a first alternating current signal via electromagnetic induction; a rectifier circuit coupled to the output of the wireless receiving coil, adapted to convert the first alternating current signal into a first direct current signal and provide the first direct current signal to the load for power supply; an energy storage unit including at least one energy storage inductor coupled to the output of the rectifier circuit, the at least one energy storage inductor being adapted to receive the first direct current signal from the rectifier circuit for charging; and a voltage regulator circuit coupled to the output of the energy storage unit, adapted to regulate a second direct current signal output by the energy storage unit when the rectifier circuit stops outputting the first direct current signal, and to use the regulated second direct current signal to power the load.

Description

Technical Field

[0001] The exemplary embodiments disclosed herein generally relate to the field of protective equipment, and particularly to helmets and cycling devices with wireless charging capabilities. Background Technology

[0002] For road safety reasons, riders are required to wear helmets when using bicycles or electric bikes. Shared bicycles and electric bikes also provide helmets for riders. For ease of use, there is usually no cable connecting the helmet to the shared bicycle or electric bike. In this situation, how to safely, stably, and efficiently power the helmet becomes a problem worthy of attention for those skilled in the art. Utility Model Content

[0003] In a first aspect of this disclosure, a helmet with wireless charging capability is provided. The helmet includes: a load; a wireless receiving coil adapted to convert an alternating magnetic field into a first alternating current signal via electromagnetic induction; a rectifier circuit coupled to the output of the wireless receiving coil, the rectifier circuit being adapted to convert the first alternating current signal into a first direct current signal and provide the first direct current signal to the load for power supply; an energy storage unit including at least one energy storage inductor coupled to the output of the rectifier circuit, the at least one energy storage inductor being adapted to receive the first direct current signal from the rectifier circuit for charging; and a voltage regulator circuit coupled to the output of the energy storage unit, the voltage regulator circuit being adapted to regulate a second direct current signal output by the energy storage unit when the rectifier circuit stops outputting the first direct current signal, and to use the regulated second direct current signal to power the load.

[0004] In some embodiments, the load includes: a first sensor adapted to generate a wake-up signal when the helmet is detected to be removed from a predetermined location of the associated cycling equipment; and a first control circuit coupled to the first sensor, the first control circuit being adapted to switch from a sleep state to a wake-up state upon receiving the wake-up signal.

[0005] In some embodiments, the first control circuit is also coupled to the output of the voltage regulator circuit and is adapted to switch from a wake-up state to a sleep state when the voltage regulator circuit stops providing the regulated second DC signal.

[0006] In some embodiments, the load further includes: a first communication module coupled to a first control circuit, the first communication module being adapted to communicate with the cycling device when the helmet is removed from a predetermined position and the first control circuit switches to an awake state, in order to send a position signal to the cycling device indicating that the helmet has been removed from the predetermined position.

[0007] In some embodiments, the load further includes: a second sensor coupled to the first control circuit, the second sensor being adapted to send a wearing signal to the first control circuit when it detects that the helmet is being worn; and a first communication module being adapted to communicate with the cycling device when the first control circuit receives the wearing signal to allow the cycling device to unlock.

[0008] In a second aspect of this disclosure, a cycling device is provided. The cycling device includes: a power source; a drive circuit coupled to an output of the power source, the drive circuit being adapted to convert a third direct current signal received from the power source into a second alternating current signal; a wireless transmitting coil coupled to an output of the drive circuit, the wireless transmitting coil being adapted to convert the second alternating current signal into an alternating magnetic field; and a helmet as described in the first aspect, wherein when the helmet is placed at a predetermined position within the cycling device, a wireless receiving coil receives the alternating magnetic field generated by the wireless transmitting coil.

[0009] In some embodiments, the cycling device further includes a basket, a predetermined location within the basket, and a wireless transmitting coil coupled to the basket.

[0010] In some embodiments, the cycling device further includes a second control circuit coupled to the drive circuit, the second control circuit being adapted to control the drive circuit to intermittently provide a second alternating current signal to the wireless transmitting coil when the cycling device is in a locked state, so that the wireless transmitting coil intermittently forms an alternating magnetic field.

[0011] In some embodiments, the cycling device further includes: a detection circuit coupled to a wireless transmitting coil and a second control circuit, the detection circuit being adapted to send a detection signal to the second control circuit when it detects that the wireless transmitting coil and the wireless receiving coil are coupled through an alternating magnetic field; and the second control circuit being adapted to control a drive circuit to continuously provide a second alternating current signal to the wireless transmitting coil when the wireless transmitting coil and the wireless receiving coil are coupled through an alternating magnetic field, so that the wireless transmitting coil continuously forms an alternating magnetic field.

[0012] In some embodiments, the cycling device further includes: a second communication module coupled to a second control circuit, the second communication module being adapted to communicate with the helmet and to receive a position signal from the helmet indicating that the helmet has been removed from the predetermined position when the helmet is removed from the predetermined position; and the second control circuit being adapted to control a drive circuit to stop providing a second alternating current signal to a wireless transmitting coil when the second communication module receives the position signal, so as to stop the wireless transmitting coil from forming an alternating magnetic field.

[0013] It should be understood that the content described in this content section is not intended to limit the key or essential features of the embodiments of this disclosure, nor is it intended to restrict the scope of this disclosure. Other features of this disclosure will become readily apparent from the following description. Attached Figure Description

[0014] The above and other features, advantages, and aspects of the embodiments of this disclosure will become more apparent from the accompanying drawings and the following detailed description. In the drawings, the same or similar reference numerals denote the same or similar elements, wherein: Figure 1 A schematic block diagram of a helmet according to an embodiment of the present disclosure is shown; and Figure 2 A schematic block diagram of a cycling device according to an embodiment of the present disclosure is shown.

[0015] Explanation of reference numerals in the attached figures: 100 - Helmet; 110 - Load; 112 - First control circuit; 114 - First sensor; 116 - First communication module; 118 - Second sensor; 120 - Wireless receiving coil; 130 - Rectifier circuit; 140 - Energy storage unit; 150 - Voltage regulator circuit; and 200-Cycling device; 210-Power supply; 220-Drive circuit; 230-Wireless transmitting coil; 240-Second control circuit; 250-Detection circuit; 260-Second communication module. Detailed Implementation

[0016] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.

[0017] It should be noted that the headings of any section / subsection provided herein are not limiting. Various embodiments are described throughout this document, and embodiments of any type may be included under any section / subsection. Furthermore, embodiments described in any section / subsection may be combined in any way with any other embodiments described in the same section / subsection and / or different sections / subsections.

[0018] In the description of embodiments of this disclosure, the term "comprising" and similar terms should be understood as open-ended inclusion, i.e., "including but not limited to". The term "based on" should be understood as "at least partially based on". The term "one embodiment" or "the embodiment" should be understood as "at least one embodiment". The term "some embodiments" should be understood as "at least some embodiments". Other explicit and implicit definitions may also be included below. The terms "first", "second", etc., may refer to different or the same objects. Other explicit and implicit definitions may also be included below.

[0019] As used herein, a “unit,” “operational unit,” or “subunit” can consist of any suitable machine learning model or network. As used herein, a set of elements or similar expressions can include one or more such elements.

[0020] As briefly mentioned earlier, shared electric bicycles and other shared vehicles typically provide helmets for riders. To enhance the intelligence of helmets, some smart helmets may incorporate payloads such as sensors and chips. Cables are usually not installed between the helmet and the vehicle for rider convenience. In some traditional technologies, the payloads are powered by a built-in disposable battery (such as a button battery). However, with increased use, the battery capacity gradually decreases, requiring periodic battery replacement. Removing and installing the battery not only easily degrades the helmet's waterproof performance but also increases future maintenance costs. Therefore, how to safely, stably, and efficiently power helmets is a problem worthy of attention for those skilled in the art.

[0021] The helmet and cycling device with wireless charging function proposed according to embodiments of this disclosure solve, or at least partially solve, the aforementioned problems and other potential problems existing in conventional solutions. According to embodiments of this disclosure, a wireless receiving coil, a rectifier circuit, an energy storage unit, and a voltage regulator circuit are deployed within the helmet. The energy storage unit can be charged using the wireless receiving coil and the rectifier circuit. The energy storage unit includes at least one energy storage inductor. When the wireless receiving coil is coupled to, for example, a wireless transmitting coil of a cycling device, the rectifier circuit can supply power to the load. When the rectifier circuit stops outputting an electrical signal (e.g., the wireless receiving coil is decoupled from the wireless transmitting coil), the energy storage inductor in the energy storage unit generates a self-induced electromotive force, converting the stored magnetic energy into a DC signal. The DC signal is regulated by the voltage regulator circuit, and the regulated DC signal is used to supply power to the load.

[0022] According to embodiments of this disclosure, by deploying a wireless receiving coil, a rectifier circuit, and an energy storage inductor, the helmet is equipped with wireless charging functionality, meeting the power supply needs throughout the helmet's entire lifecycle. Due to the long lifespan of the energy storage inductor, subsequent maintenance costs are significantly reduced. Furthermore, through the cooperation of the energy storage inductor and the voltage regulator circuit, stable power supply can be provided to the load for a certain period of time (e.g., 30s or 60s) after the wireless receiving coil and the wireless transmitting coil are decoupled.

[0023] Figure 1 A schematic block diagram of a helmet 100 according to an embodiment of the present disclosure is shown. Figure 2 A schematic block diagram of a cycling device 200 according to an embodiment of this disclosure is shown. Figure 1 and Figure 2As shown, the cycling device 200 according to embodiments of the present disclosure may include a helmet 100 and a vehicle body. The vehicle body may be provided with a predetermined location for placing the helmet 100, the predetermined location being suitable for storing the helmet 100 when it is not in use. In some embodiments, the vehicle body may be provided with a basket, for example, a basket may be provided above the front wheel of the vehicle body. The basket may be configured to accommodate the helmet 100. The predetermined location may be located within the basket, for example, the interior of the basket may be considered the predetermined location. It should be understood that the above-described predetermined location is merely exemplary, and the predetermined location may also adopt any other suitable structure. For example, a rack or storage box may also be provided above the rear wheel of the vehicle body, and the predetermined location may be provided on the rack or within the storage box. Embodiments of the present disclosure do not impose any limitations on this.

[0024] like Figure 2 As shown, the vehicle body may be equipped with a power supply 210, a drive circuit 220, and a wireless transmitting coil 230. The power supply 210 is adapted to provide a DC signal (sometimes referred to herein as a third DC signal). The power supply 210 may include any suitable device or system capable of providing a DC signal. For example, the riding device 200 may be an electric vehicle, which may have an energy storage module deployed within it, which may include one or more battery packs. The power supply 210 may include this energy storage module. Of course, the power supply 210 described above is merely exemplary. For instance, if the vehicle body is equipped with a photovoltaic power generation unit, the power supply 210 may also include the photovoltaic power generation unit.

[0025] The drive circuit 220 may be coupled to the output of the power supply 210. The drive circuit 220 is adapted to receive a DC signal from the power supply 210 and convert the DC signal into an AC signal (sometimes referred to herein as a second AC signal). In some embodiments, the drive circuit 220 may include an inverter, such as a full-bridge inverter or a half-bridge inverter, etc.

[0026] The wireless transmitting coil 230 can be coupled to the output of the drive circuit 220. The wireless transmitting coil 230 is adapted to receive an alternating current signal from the drive circuit 220 and convert it into an alternating magnetic field. In some embodiments, the wireless transmitting coil 230 can be deployed near a predetermined location, and the wireless transmitting coil 230 is adapted to form an alternating magnetic field at the predetermined location. As an example, if the predetermined location is inside the basket, the wireless transmitting coil 230 can be deployed, for example, inside the side wall or bottom wall of the basket. The wireless transmitting coil 230 can be configured to form an alternating magnetic field inside the basket.

[0027] like Figure 1As shown, helmet 100 may include a load 110, a wireless receiving coil 120, a rectifier circuit 130, and an energy storage unit 140. The wireless receiving coil 120 is adapted to convert an alternating magnetic field into an alternating current signal (sometimes referred to herein as a first alternating current signal) via electromagnetic induction. In some embodiments, the wireless receiving coil 120 may be deployed on helmet 100 at a location corresponding to the wireless receiving coil 120. As an example, the wireless receiving coil 120 may be deployed on the side of helmet 100, and the wireless transmitting coil 230 may be deployed on the side wall of the basket. Helmet 100 is adapted to be placed in the basket in a specific manner (e.g., with the cap facing down). When helmet 100 is placed in this specific manner at the predetermined location, the wireless receiving coil 120 may be close to and opposite the wireless transmitting coil 230. In this way, the alternating magnetic field generated by the wireless transmitting coil 230 can pass through the wireless receiving coil 120. The magnetic flux of the alternating magnetic field changes continuously, and the wireless receiving coil 120 generates an induced electromotive force. An AC signal can be output through the output terminal of the wireless transmitting coil 230.

[0028] A rectifier circuit 130 is coupled to the output of the wireless receiving coil 120 and the input of the load 110. The rectifier circuit 130 is adapted to receive an AC signal from the wireless receiving coil 120, convert the AC signal into a DC signal (sometimes referred to herein as a first DC signal), and provide the DC signal to the load 110 to power the load 110. Specifically, when the helmet 100 is placed in a predetermined position, the wireless transmitting coil 230 provides an AC signal to the rectifier circuit 130, which converts the AC signal into a DC signal to power the load 110. In some embodiments, the rectifier circuit 130 is also adapted to regulate the DC signal, for example, by maintaining the voltage of the DC signal at 5V or another voltage. This improves the stability of the power supply.

[0029] The energy storage unit 140 includes at least one energy storage inductor. This at least one energy storage inductor is coupled to the output of the rectifier circuit 130 and is adapted to receive a DC signal from the rectifier circuit 130 for charging. After the helmet 100 is placed in a predetermined position, the rectifier circuit 130 supplies power not only to the load 110 but also to the energy storage inductor. The energy storage inductor receives the DC signal and converts it into magnetic energy. The current flowing through the energy storage inductor gradually increases until it no longer changes, at which point the energy storage inductor is fully charged. At this point, the energy storage inductor switches to a DC steady state (which can be simply referred to as "steady state"), and the voltage across the energy storage inductor is zero or close to zero, no longer impeding a constant current.

[0030] In some embodiments, the energy storage unit 140 may include multiple energy storage inductors, which may be connected in parallel or in series. It is understood that the connection method between the multiple energy storage inductors mainly depends on the supply voltage, power, and required power supply duration of the load 110. In other words, multiple energy storage inductors are connected in parallel or in series to form the energy storage unit 140 (also referred to as an energy storage circuit). After the rectifier circuit 130 stops supplying power, the supply voltage of the energy storage circuit should be able to meet or substantially meet the supply voltage of the load 110. Furthermore, for a load 110 of a specific power, the energy stored in the energy storage circuit should be able to meet the requirement of stably supplying power to the load 110 within a certain time range.

[0031] In embodiments of this disclosure, such as Figure 1 As shown, the helmet 100 may further include a voltage regulator circuit 150, which can be coupled to the output of the energy storage unit 140 and the input of the load 110, respectively. When the rectifier circuit 130 stops outputting a DC signal, the energy storage inductor in the energy storage unit 140 generates a self-induced electromotive force, converting the stored magnetic energy into a DC signal (sometimes referred to herein as a second DC signal). The voltage regulator circuit 150 receives the DC signal from the energy storage unit 140, regulates the DC signal, and uses the regulated DC signal to power the load 110. In this way, after the rider removes the helmet 100 from the predetermined position, the energy storage unit 140, in conjunction with the voltage regulator circuit 150, can stably power the load 110 for a certain period of time, meeting the power requirements of the helmet 100 when performing operations such as wearing detection.

[0032] In some embodiments, the load 110 may include a first control circuit 112 and a first sensor 114. The first sensor 114 is adapted to detect whether the helmet 100 has been removed from a predetermined position and to generate a wake-up signal upon detecting that the helmet 100 has been removed from the predetermined position. The first control circuit 112 is coupled to the first sensor 114 and is adapted to switch from a sleep state to an awake state upon receiving the wake-up signal. In this way, after the rider removes the helmet 100 from the predetermined position, the first sensor 114 can wake up the first control circuit 112 to perform, for example, wear detection.

[0033] In some examples, the first sensor 114 may include a motion sensor, such as an accelerometer, a gyroscope, an inertial measurement unit, etc. The first sensor 114 can detect whether the helmet 100 has been removed from a predetermined position by detecting the motion state of the helmet 100. Of course, the first sensor 114 can also be implemented as other types of sensors. The embodiments of this disclosure are not limited in this regard.

[0034] In some examples, the sleep state and wake-up state of the first control circuit 112 can be understood as two different states of the first control circuit 112. When the first control circuit 112 is in the sleep state, some or all of its functions are disabled, for example, only the real-time clock (RTC) is kept running. The first control circuit 112 is in a low-power operating mode. When the first control circuit 112 is in the wake-up state, it switches from the low-power operating mode to the normal operating mode, and the disabled functions are reactivated, enabling it to perform operations such as signal processing or control. In some examples, the first control circuit 112 may include a microcontroller unit (MCU) or other control circuitry (e.g., a microprocessor).

[0035] In some embodiments, such as Figure 1 As shown, the load 110 may further include a first communication module 116. The first communication module 116 is coupled to a first control circuit 112. After the helmet 100 is removed from a predetermined position, the first sensor 114 can wake up the first control circuit 112. When the first control circuit 112 switches to the wake-up state, the first control circuit 112 can control the first communication module 116 to send a position signal to the riding device 200 indicating that the helmet 100 has been removed from the predetermined position.

[0036] In some embodiments, such as Figure 2 As shown, the vehicle body may also include a second control circuit 240 and a second communication module 260. The second control circuit 240 is coupled to the drive circuit 220 and the second communication module 260, respectively. After the first control circuit 112 switches to the wake-up state, the first control circuit 112 can control the first communication module 116 to communicate with the second communication module 260. The second communication module 260 receives a position signal from the first communication module 116. The second control circuit 240 is adapted to control the drive circuit 220 to stop providing an AC signal (i.e., a second AC signal) to the wireless transmitting coil 230 when the second communication module 260 receives a position signal, so that the wireless transmitting coil 230 stops forming an alternating magnetic field. In this way, the energy consumption of the riding device 200 can be reduced, thereby extending the battery life of the riding device 200.

[0037] In some examples, the second control circuit 240 may also be coupled to the power supply 210 or a switching circuit connected between the power supply 210 and the drive circuit 220. Upon receiving a stop signal, the second communication module 260 may send a signal to the second control circuit 240. The second control circuit 240 may control the power supply 210 to stop providing DC signals to the drive circuit 220, or the second control circuit 240 may disconnect the switching circuit to stop the power supply 210 from providing DC signals to the drive circuit 220. In some examples, the second control circuit 240 may also include an MCU or other control circuitry. Embodiments of this disclosure are not limited in this regard.

[0038] In some examples, the first communication module 116 and the second communication module 260 can communicate via Bluetooth, Wi-Fi, 4G, Zigbee or other proprietary protocols.

[0039] In some embodiments, such as Figure 1 As shown, the load 110 may further include a second sensor 118. The second sensor 118 may be coupled to the first control circuit 112. The second sensor 118 is adapted to send a wearing signal to the first control circuit 112 when it detects that the helmet 100 is being worn. The second sensor 118 can be implemented as a variety of different sensors. Examples of the second sensor 118 may include, but are not limited to, an infrared sensor, a pressure sensor, or a capacitive sensor, etc. The first communication module 116 is adapted to communicate with the riding device 200 when the first control circuit 112 receives the wearing signal to allow the riding device 200 to unlock.

[0040] As an example, combined Figure 2 As shown, when the first control circuit 112 receives a wearing signal, the first communication module 116 can send a status signal, for example, indicating that the helmet 100 is in a wearing state, to the second communication module 260. Upon receiving this status signal, the second control circuit 240 can allow the riding device 200 to unlock. Thus, by only allowing the rider to unlock the riding device 200 after detecting that the rider is wearing the helmet 100, the rider is restricted to wearing the helmet 100, thereby improving safety during riding.

[0041] In some embodiments, such as Figure 2As shown, the vehicle body may also include a detection circuit 250, which can be coupled to the wireless transmitting coil 230 and the second control circuit 240, respectively. The detection circuit 250 can detect whether the wireless transmitting coil 230 and the wireless receiving coil 120 are coupled through an alternating magnetic field. There are various implementations of the detection circuit 250. In some examples, the detection circuit 250 can detect whether the wireless transmitting coil 230 and the wireless receiving coil 120 are coupled through an alternating magnetic field by detecting various parameters such as the current, impedance, and magnetic field strength of the alternating magnetic field of the wireless transmitting coil 230. As an example, the detection circuit 250 can be coupled to the wireless transmitting coil 230 through the drive circuit 220. The detection circuit 250 can be used to detect the current of the DC signal supplied by the power supply 210 to the drive circuit 220 to detect whether the wireless transmitting coil 230 and the wireless receiving coil 120 are coupled through an alternating magnetic field.

[0042] The second control circuit 240 is also adapted to control the drive circuit 220 to intermittently provide alternating current signals to the wireless transmitting coil 230 when the riding device 200 is in a locked state, so that the wireless transmitting coil 230 intermittently forms an alternating magnetic field. As an example, if the riding device 200 is in a locked state, the second control circuit 240 can control the drive circuit 220 to provide alternating current signals to the wireless transmitting coil 230 at first predetermined intervals (e.g., 3 minutes or 5 minutes, etc.), each lasting for a second predetermined interval (e.g., 100ms or 200ms, etc.). In this way, the wireless receiving coil 120 on the helmet 100 can be detected.

[0043] If the wireless transmitting coil 230 and the wireless receiving coil 120 are coupled via an alternating magnetic field, the detection circuit 250 can send a detection signal to the second control circuit 240. The second control circuit 240 controls the drive circuit 220 to continuously provide an alternating current signal to the wireless transmitting coil 230, so that the wireless transmitting coil 230 continuously forms an alternating magnetic field. Therefore, when the riding device 200 is in a locked state, it can automatically detect whether the wireless transmitting coil 230 and the wireless receiving coil 120 are coupled via an alternating magnetic field. When the wireless transmitting coil 230 and the wireless receiving coil 120 are coupled, the helmet 100 is wirelessly charged to support the power needs of the helmet 100 when it is used again.

[0044] Various implementations of this disclosure have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed implementations. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described implementations. The terminology used herein is chosen to best explain the principles, practical applications, or improvements to technology in the market, or to enable others skilled in the art to understand the various implementations disclosed herein.

Claims

1. A helmet with wireless charging function, characterized in that, include: Load (110); A wireless receiving coil (120) is adapted to convert an alternating magnetic field into a first alternating current signal through electromagnetic induction; A rectifier circuit (130) is coupled to the output of the wireless receiving coil (120). The rectifier circuit (130) is adapted to convert the first AC signal into a first DC signal and provide the first DC signal to the load (110) to power the load (110). The energy storage unit (140) includes at least one energy storage inductor coupled to the output of the rectifier circuit (130), and the at least one energy storage inductor is adapted to receive the first DC signal from the rectifier circuit (130) for charging. as well as A voltage regulator circuit (150) is coupled to the output terminal of the energy storage unit (140). The voltage regulator circuit (150) is adapted to regulate the second DC signal output by the energy storage unit (140) when the rectifier circuit (130) stops outputting the first DC signal, and to supply power to the load (110) using the regulated second DC signal.

2. The helmet according to claim 1, characterized in that, The load (110) includes: A first sensor (114) is adapted to generate a wake-up signal when it detects that the helmet (100) has been removed from a predetermined position of the associated riding device (200); and A first control circuit (112) is coupled to the first sensor (114), and the first control circuit (112) is adapted to switch from a sleep state to a wake-up state when the wake-up signal is received.

3. The helmet according to claim 2, characterized in that, The first control circuit (112) is also coupled to the output of the voltage regulator circuit (150) and is adapted to switch from the wake-up state to the sleep state when the voltage regulator circuit (150) stops providing the regulated second DC signal.

4. The helmet according to claim 2, characterized in that, The load (110) also includes: A first communication module (116) coupled to the first control circuit (112) is adapted to communicate with the riding device (200) when the helmet (100) is removed from the predetermined position and the first control circuit (112) switches to the wake-up state, to send a position signal to the riding device (200) indicating that the helmet (100) is removed from the predetermined position.

5. The helmet according to claim 4, characterized in that, The load (110) also includes: A second sensor (118), coupled to the first control circuit (112), is adapted to send a wearing signal to the first control circuit (112) when the helmet (100) is detected to be in a wearing state; and The first communication module (116) is adapted to communicate with the riding device (200) when the first control circuit (112) receives the wearing signal to allow the riding device (200) to unlock.

6. A cycling device, characterized in that, include: Power supply (210); A driving circuit (220) is coupled to the output terminal of the power supply (210), and the driving circuit (220) is adapted to convert a third DC signal received from the power supply (210) into a second AC signal; A wireless transmitting coil (230) is coupled to the output terminal of the driving circuit (220), and the wireless transmitting coil (230) is adapted to convert the second AC signal into an alternating magnetic field; as well as The helmet (100) according to any one of claims 1-5, wherein when the helmet (100) is placed at a predetermined position in the riding device (200), the wireless receiving coil (120) receives the alternating magnetic field generated by the wireless transmitting coil (230).

7. The cycling device according to claim 6, characterized in that, It also includes a basket, the predetermined position being located inside the basket, and the wireless transmitting coil (230) being coupled to the basket.

8. The cycling device according to claim 6, characterized in that, Also includes: A second control circuit (240), coupled to the drive circuit (220), is adapted to control the drive circuit (220) to intermittently provide the second AC signal to the wireless transmitting coil (230) when the riding device (200) is in a locked state, so that the wireless transmitting coil (230) intermittently forms an alternating magnetic field.

9. The cycling device according to claim 8, characterized in that, Also includes: A detection circuit (250), coupled to the wireless transmitting coil (230) and the second control circuit (240), is adapted to send a detection signal to the second control circuit (240) when it detects that the wireless transmitting coil (230) and the wireless receiving coil (120) are coupled through the alternating magnetic field; and The second control circuit (240) is also adapted to control the drive circuit (220) to continuously provide the second AC signal to the wireless transmitting coil (230) when the wireless transmitting coil (230) and the wireless receiving coil (120) are coupled through the alternating magnetic field, so that the wireless transmitting coil (230) continuously forms the alternating magnetic field.

10. The cycling device according to claim 8, characterized in that, Also includes: A second communication module (260), coupled to the second control circuit (240), is adapted to communicate with the helmet (100) and, in the event that the helmet (100) is removed from the predetermined position, receive from the helmet (100) a position signal indicating that the helmet (100) has been removed from the predetermined position; and The second control circuit (240) is also adapted to control the drive circuit (220) to stop providing the second AC signal to the wireless transmitting coil (230) when the second communication module (260) receives the position signal, so that the wireless transmitting coil (230) stops forming the alternating magnetic field.

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