Light-emitting hub with vertical parking logo structure and control method of light-emitting hub

Abstract

The invention relates to the technical field of automobile hubs, and discloses a light-emitting hub with a vertical parking logo structure and a control method thereof.The light-emitting hub comprises a hub body, a clamping groove is formed in the center of the outer side of the hub body, a fixing block is detachably installed on one side of the clamping groove, and a circle of annular plate is detachably installed on the side, close to the hub body, of the fixing block; an inwards-sunken mounting groove is formed in the center position of the side, away from the hub, of the fixing block. The rotating speed of the hub is monitored in real time through the rotating speed sensor, a signal is transmitted to the vehicle-mounted control system, and the vehicle-mounted control system automatically adjusts the operation modes, the light-emitting frequency and the light-emitting brightness of the hub light-emitting assembly and the vehicle logo light-emitting assembly according to the rotating state of the hub. Dynamic control over the light-emitting assembly is achieved through the pulse width modulation technology by means of the control module, the intelligent level of the hub light-emitting device is improved, the visibility and the identification degree of a vehicle at night or under the low-visibility condition are enhanced, and meanwhile the safety and the decoration effect of the vehicle are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile wheel hub, and particularly relates to a light-emitting wheel hub with a vertical parking logo structure and a control method thereof. BACKGROUND

[0002] Although some wheel hub light-emitting devices exist in the market at present, most of these devices can only emit light with fixed frequency and brightness when the wheel hub rotates, and cannot dynamically adjust according to the rotational speed of the wheel hub. Such fixed light-emitting mode cannot achieve the best decorative effect and warning effect in different driving states, which limits the practicality and functionality of the wheel hub light-emitting device.

[0003] The existing wheel hub light-emitting device cannot automatically switch to the parking warning mode when the vehicle is parked. When the vehicle is decelerating or about to stop, there is a lack of a warning function that can remind surrounding pedestrians and other vehicles, which to some extent increases the risk of traffic accidents, especially at night or in low-visibility conditions.

[0004] After the vehicle completely stops, the existing wheel hub light-emitting device cannot provide effective parking lighting function. When the user needs to park and unload goods or check the vehicle at night, the lack of lighting support on the side of the vehicle will bring inconvenience to the user.

[0005] Most of the existing wheel hub light-emitting devices use simple switch control and lack intelligent control logic. They cannot automatically adjust the light-emitting frequency, brightness and color according to the rotational speed of the wheel hub, environmental brightness and other factors, cannot realize personalized and intelligent light-emitting effect, and cannot meet the higher requirements of users for vehicle personalization decoration and safety.

[0006] Moreover, the logo installed on the wheel hub in the prior art rotates synchronously with the wheel hub when the wheel hub rotates, which makes the logo unable to be clearly displayed, so that pedestrians cannot know the brand of the car from the side, the promotional effect is reduced and lacks the corresponding sense of seniority. SUMMARY

[0007] The present application relates to the technical field of automobile wheel hub, and particularly relates to a light-emitting wheel hub with a vertical parking logo structure and a control method thereof.

[0008] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0009] The application discloses a light-emitting wheel hub with a standing parking logo structure, which comprises a wheel hub, a clamping groove is formed in the center of the outer side of the wheel hub, a fixing block is detachably arranged on one side of the clamping groove, a ring-shaped plate is detachably arranged on the side of the fixing block close to the wheel hub, an inwardly recessed mounting groove is arranged in the center of the side of the fixing block away from the wheel hub, a connecting plate is rotatably arranged in the mounting groove through a bearing, a circuit board is detachably arranged on the side of the connecting plate away from the wheel hub, and a power supply is arranged between the connecting plate and the circuit board; a logo plate is fixedly connected to the outer side of the side of the circuit board away from the connecting plate through bolts, and a protective cover is detachably arranged on the outer side of the logo plate; the protective cover is made of transparent material.

[0010] A counterweight mechanism is arranged between the connecting plate and the circuit board, and the counterweight mechanism is used for guaranteeing the stability of the connecting plate and the circuit board during wheel hub rotation.

[0011] A light system is arranged on the side of the circuit board away from the connecting plate and the outer surface of the wheel hub.

[0012] Preferably, a plurality of buckles and a separately arranged positioning block are fixedly connected to the center of the side of the fixing block close to the clamping groove in a ring-shaped array, and a plurality of elastic rings are movably connected between the buckles; the three can be embedded into the clamping groove through cooperation of the buckles, the elastic rings and the positioning block.

[0013] Preferably, the power supply comprises four magnets fixedly arranged on the ring-shaped plate in a ring-shaped array and a power generation assembly fixedly arranged on the circuit board, and the four magnets and the power generation assembly cooperate to generate current.

[0014] Preferably, the light system comprises a logo light-emitting assembly arranged on the surface of the side of the circuit board away from the connecting plate and a wheel hub light-emitting assembly detachably arranged on the outer surface of the wheel hub; the wheel hub light-emitting assembly and the logo light-emitting assembly are electrically connected with the circuit board.

[0015] The light system further comprises a control module fixedly arranged on the circuit board; the wheel hub light-emitting assembly and the logo light-emitting assembly both have color-changing and breathing effects and are controlled by the control module.

[0016] Preferably, the counterweight mechanism comprises a counterweight plate fixedly arranged on the circuit board, and an arc-shaped counterweight block is detachably arranged at the lower end of the counterweight plate.

[0017] A control method of a light-emitting wheel hub with a standing parking logo structure, comprising the following steps:

[0018] S1, a wheel hub rotating speed is monitored in real time by a rotating speed sensor and transmitted to a vehicle-mounted control system;

[0019] Step S2, when the wheel hub starts to rotate, and the wheel hub rotation speed ≥ 10 revolutions per minute, the vehicle-mounted control system automatically adjusts the light-emitting frequency and light-emitting brightness of the wheel hub light-emitting assembly and the vehicle logo light-emitting assembly according to the wheel hub rotation speed;

[0020] Step S3, when the current rotation speed of the wheel hub < the rotation speed at the previous time, and the wheel hub rotation speed < 10 revolutions per minute, the vehicle-mounted control system automatically switches to the parking warning mode;

[0021] Step S4, when the wheel hub completely stops, the vehicle-mounted control system automatically switches to the parking lighting mode.

[0022] Further, in step S1, the following sub-steps are further included:

[0023] S1-1, real-time acquisition of the wheel hub rotation speed signal by the rotation speed sensor installed on the wheel hub;

[0024] S1-2, filtering, amplification and shaping processing of the wheel hub rotation speed signal by the signal processor to obtain a pre-processed rotation speed signal, and transmission of the pre-processed rotation speed signal to the vehicle-mounted control system by wireless transmission technology;

[0025] S1-3, the vehicle-mounted control system receives the pre-processed rotation speed signal, calculates the wheel hub rotation speed according to the pulse counting method and stores it in the memory of the vehicle-mounted control system.

[0026] Further, in step S2, the following sub-steps are further included:

[0027] S2-1, setting a mapping logic of the wheel hub rotation speed and the light-emitting frequency and light-emitting brightness of the light-emitting assembly, the light-emitting assembly including the wheel hub light-emitting assembly and the vehicle logo light-emitting assembly, the mapping logic being as follows:

[0028] When the wheel hub starts to rotate, and the wheel hub rotation speed ≥ 10 revolutions per minute and < 50 revolutions per minute, the light-emitting frequency of the light-emitting assembly is set to 1-2 times per second, and the light-emitting brightness is 10-30 lumens;

[0029] When the wheel hub rotation speed ≥ 50 revolutions per minute and < 150 revolutions per minute, the light-emitting frequency of the light-emitting assembly is set to 3-5 times per second, and the light-emitting brightness is 50-100 lumens;

[0030] When the wheel hub rotation speed ≥ 150 revolutions per minute, the light-emitting frequency of the light-emitting assembly is set to 5-10 times per second, and the light-emitting brightness is 100-200 lumens;

[0031] S2-2, the vehicle-mounted control system automatically adjusts the light-emitting frequency and light-emitting brightness of the wheel hub light-emitting assembly and the vehicle logo light-emitting assembly according to the mapping logic by using the control module through pulse width modulation (PWM) technology.

[0032] Further, in step S3, the following sub-steps are further included:

[0033] S3-1, when the current speed of the hub < the speed at the previous time, and the hub speed < 10 revolutions per minute, the vehicle-mounted control system judges that the hub is in the state of about to stop, at this time, the vehicle-mounted control system detects the ambient light brightness through the light sensor and sends a switching instruction to the light-emitting component, instructing the light-emitting component to enter the parking warning mode;

[0034] S3-2, after the light-emitting component receives the switching instruction, according to the ambient light brightness, the control module automatically adjusts the light-emitting frequency, light-emitting brightness and light-emitting color through the pulse width modulation (PWM) technology;

[0035] S3-3, in the parking warning mode, the vehicle-mounted control system monitors the working state of the speed sensor and the light-emitting component in real time, and when it is detected that the speed sensor signal is lost or the light-emitting component is faulty, the driver is notified of the fault through the instrument panel display, sound prompt or mobile phone application program.

[0036] Further, in step S4, the following sub-steps are further included:

[0037] S4-1, when the hub speed drops to 0, the vehicle-mounted control system judges that the hub is in the state of complete stop, at this time, the vehicle-mounted control system detects the ambient light brightness through the light sensor and sends a switching instruction to the light-emitting component, instructing the light-emitting component to enter the parking lighting mode;

[0038] S4-2, after the light-emitting component receives the switching instruction, according to the ambient light brightness, the control module automatically adjusts the light-emitting frequency, light-emitting brightness and light-emitting color through the pulse width modulation (PWM) technology;

[0039] S4-3, after the light-emitting component enters the parking lighting mode for 1 minute, the parking lighting mode is automatically turned off;

[0040] S4-4, if the vehicle restarts during the parking lighting mode, the parking lighting mode is interrupted and returns to step S2.

[0041] The technical scheme provided by the present application has at least the following beneficial effects:

[0042] The present application monitors the hub speed in real time through the speed sensor, and automatically adjusts the light-emitting frequency and light-emitting brightness of the hub light-emitting component and the vehicle logo light-emitting component according to the speed of the hub. This dynamic adjustment can match the light-emitting effect with the motion state of the hub, and achieve the best decorative effect and warning effect at different speeds, improving the practicality and functionality of the hub light-emitting device.

[0043] The application automatically switches to a parking warning mode when the hub rotation speed is reduced to a certain value, reminds pedestrians and other vehicles around the vehicle that the vehicle is about to stop or has stopped, reduces the risk of traffic accidents, and switches to a parking lighting mode after the hub completely stops, providing side lighting support for the vehicle when it is parked at night, meeting the actual needs of users.

[0044] The application adopts pulse width modulation (PWM) technology, automatically adjusts the light emitting frequency, brightness and color according to the hub rotation speed and ambient brightness, and such intelligent control logic not only improves the performance of the light emitting component, but also realizes personalized and intelligent light emitting effect, meeting the higher requirements of users on vehicle decoration and safety.

[0045] The application improves the visibility and recognition of the vehicle under night or low visibility conditions by lighting the hub and the logo when the hub rotates and providing warning and lighting functions when the vehicle is parked, which not only helps to remind other road users to pay attention to the existence of the vehicle, but also enhances the brand image of the vehicle and improves the overall safety and aesthetics of the vehicle.

[0046] In the application, the connecting plate can counteract the rotating force generated by the fixing block through the counterweight block on the counterweight plate when the connecting plate is subjected to the rotating force, so that the connecting plate and the circuit board can remain relatively stable, and the logo plate can always remain vertical and downward during the rotation of the hub, thereby improving the seniority of the vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0047] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art and the advantages thereof, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description only show some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative effort.

[0048] Figure 1 A structure diagram of a light-emitting hub with a vertical and stationary logo structure is provided in the application;

[0049] Figure 2 A structure diagram of a light-emitting hub with a vertical and stationary logo structure is provided in the application;

[0050] Figure 3 A structure diagram of a light-emitting hub with a vertical and stationary logo structure is provided in the application;

[0051] Figure 4 A structure diagram of a light-emitting hub with a vertical and stationary logo structure is provided in the application;

[0052] Figure 5A structure diagram of a light-emitting wheel hub with a standing parking sign structure is provided in the present application.

[0053] Figure 6 A structure diagram of a light-emitting wheel hub with a standing parking sign structure is provided in the present application.

[0054] Figure 7 A flow chart of a control method of a light-emitting wheel hub with a standing parking sign structure is provided in the present application.

[0055] In the figure: 1 wheel hub, 2 wheel hub light-emitting assembly, 3 fixed block, 4 protective cover, 5 buckle, 6 elastic ring, 7 positioning block, 8 annular plate, 9 magnet, 10 connecting plate, 11 circuit board, 12 power generation assembly, 13 car sign light-emitting assembly, 14 car sign plate, 15 control module, 16 counterweight plate, 17 counterweight block. DETAILED DESCRIPTION

[0056] In order to further illustrate the technical means and effects adopted by the present application to achieve the predetermined object, the specific implementation, structure, features and effects of the light-emitting wheel hub with a standing parking sign structure and the control method thereof according to the present application are described in detail as follows in combination with the preferred embodiments and the drawings. In the following description, different "one embodiment" or "another embodiment" do not necessarily refer to the same embodiment. In addition, the specific features, structures or characteristics in one or more embodiments can be combined in any suitable form.

[0057] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs.

[0058] The following examples are for illustrative purposes only and are not intended to limit the scope of the present application.

[0059] The specific scheme of the light-emitting wheel hub with a standing parking sign structure and the control method thereof according to the present application is specifically described below in combination with the drawings.

[0060] Reference Figures 1 to 6 A light-emitting wheel hub with a standing parking sign structure includes a wheel hub 1, a clamping groove is formed at the center of the outer side of the wheel hub 1, a fixed block 3 is arranged at one side of the clamping groove, a plurality of buckles 5 and a positioning block 7 are fixedly connected in an annular array at the center of the side of the fixed block 3 close to the clamping groove, an elastic ring 6 is movably connected between the plurality of buckles 5, the buckle 5, the elastic ring 6 and the positioning block 7 can be embedded into the clamping groove through cooperation, so that the fixed block 3 is fixedly installed on the wheel hub 1, and the fixed block 3 can rotate synchronously when the wheel hub 1 rotates.

[0061] The fixed block 3 is detachably installed with a ring-shaped plate 8 near one side of the hub 1, and four magnets 9 are arranged between the fixed block 3 and the ring-shaped plate 8, which are fixedly installed on the ring-shaped plate 8 in a ring-shaped array, and the fixed block 3 is provided with an inwardly recessed mounting groove at the center position of the side away from the hub 1, and a connecting plate 10 is rotatably installed in the mounting groove through a bearing, and the connecting plate 10 is detachably installed with a circuit board 11 on the side away from the hub 1, and a power generation assembly 12 is fixedly installed between the connecting plate 10 and the circuit board 11, and the power generation assembly 12 is provided with a control module 15 fixedly installed on the circuit board 11, and the power generation assembly 12 and the control module 15 are both prior art, and their specific structural design will not be described here, and the power generation assembly 12 and the control module 15 are electrically connected with the circuit board 11, and the circuit board 11 is installed with a car logo light-emitting assembly 13 on the surface away from the connecting plate 10, and the four magnets 9 on the ring-shaped plate 8 cooperate with the power generation assembly 12 to generate current, so that the car logo light-emitting assembly 13 is bright after being connected to the current, and the hub 1 is detachably installed with a hub light-emitting assembly 2 on the outer surface, and the hub light-emitting assembly 2 is arranged in a ring-shaped array and is electrically connected with the circuit board 11, and the car logo light-emitting assembly 13 and the hub light-emitting assembly 2 both have color-changing and breathing effects, which are controlled by the control module 15.

[0062] The connecting plate 10 and the circuit board 11 are provided with a counterweight plate 16 fixedly installed on the circuit board 11, and the counterweight plate 16 is detachably installed with a counterweight block 17 designed in an arc shape at the lower end, so that the connecting plate 10 can offset the rotational force generated by the fixed block 3 when the connecting plate 10 is subjected to the rotational force, so that the connecting plate 10 and the circuit board 11 can remain relatively stable when the fixed block 3 rotates.

[0063] The circuit board 11 is peripherally fixedly connected with a car logo plate 14 on the side away from the connecting plate 10 through bolts, and the car logo plate 14 is detachably installed with a protective cover 4 on the outer side, and the protective cover 4 is made of transparent material, so that the light of the car logo light-emitting assembly 13 can penetrate through the protective cover 4, improving the beauty of the hub 1 when rotating.

[0064] The hub 1 in the present application will drive the fixed block 3 to move synchronously through the buckle 5 and the elastic ring 6 when rotating, the fixed block 3 will drive the annular plate 8 to move synchronously when rotating, at this time, the four magnets 9 on the annular plate 8 will rotate coaxially, thereby making the magnets 9 generate electromagnetic cutting effect on the power generation assembly 12, at this time, the stator inside the power generation assembly 12 will generate current under the action of the magnets 9, the current will pass through the circuit board 11 and reach the control module 15 through the circuit board 11, at this time, the control module 15 will control the car logo light-emitting assembly 13 and the hub light-emitting assembly 2 to be turned on, the car logo light-emitting assembly 13 being turned on will make the car logo on the car logo plate 14 bright, and the hub light-emitting assembly 2 being turned on will make itself bright, thereby making the hub and the car logo be able to generate light source during the driving of the vehicle at night, and increasing the beauty of the driving of the vehicle.

[0065] Since the fixed block 3 is connected with the connecting plate 10 through the bearing, thereby when the fixed block 3 is driven to rotate by the hub 1, the connecting plate 10 will not rotate synchronously under the action of the bearing, and since the circuit board 11 is fixedly connected with the counterweight plate 16, thereby when the connecting plate 10 is subjected to the rotating force generated by the fixed block 3, the force is offset by the counterweight blocks 17 on the counterweight plate 16, therefore when the fixed block 3 rotates, the connecting plate 10 and the circuit board 11 can both keep relatively stable, and since the car logo plate 14 is connected with the circuit board 11 through the bolts, thereby the car logo plate 14 can also keep relatively stable, so that when the hub 1 rotates, the car logo plate 14 can keep standing.

[0066] Please refer to Figure 7 , which shows a method flow chart of a control method of a light-emitting hub with a standing car logo structure provided by an embodiment of the present application, and the method comprises the following steps:

[0067] Step S1, the rotating speed of the hub is monitored in real time by a rotating speed sensor and transmitted to a vehicle-mounted control system;

[0068] In step S1, the following sub-steps are further included:

[0069] S1-1, the rotating speed signal of the hub is collected in real time by the rotating speed sensor installed on the hub;

[0070] S1-2, the rotating speed signal is filtered, amplified and shaped by a signal processor, and the preprocessed rotating speed signal is transmitted to the vehicle-mounted control system through wireless transmission technology;

[0071] S1-3, the vehicle-mounted control system receives the preprocessed rotating speed signal, calculates the rotating speed of the hub according to the pulse counting method and stores it in the memory of the vehicle-mounted control system.

[0072] It should be noted that the speed sensor is a sensor for measuring the speed of rotating objects (such as wheel hubs), with high precision, high reliability, and fast response speed. It usually collects speed signals based on electromagnetic induction or Hall effect principle, for example, when the wheel hub rotates, the speed sensor installed on the wheel hub detects the change of magnetic flux generated by rotation, thereby generating a pulse signal proportional to the speed. It is widely used in engine management systems, transmission control or speedometer displays, and in this patent, it is used to monitor the real-time speed of the wheel hub, providing a data basis for subsequent light control.

[0073] The signal processor is used to preprocess the collected wheel speed signal to improve the quality and availability of the signal, which usually includes:

[0074] Filtering: removing noise and interference components in the signal, wheel speed signals may be affected by electromagnetic interference, mechanical vibration and other factors, resulting in high-frequency noise or low-frequency drift in the signal, which needs to be removed by filters such as low-pass filters, high-pass filters or band-pass filters;

[0075] Amplification: increasing the amplitude of the signal to a level suitable for subsequent processing, as the signal output by the sensor is usually weak, direct transmission to the vehicle control system may be disturbed or cannot be accurately identified, and the signal amplitude needs to be raised to an appropriate range (e.g. from millivolts to volts) by an amplifier;

[0076] Shaping: adjusting the waveform of the signal to a standard pulse signal, the shaped signal has clearer rising and falling edges, facilitating subsequent pulse counting and processing;

[0077] The signal processor is widely used for signal preprocessing, in this patent, the speed signal is filtered, amplified and shaped by the signal processor, which can improve the quality of the signal, ensure the accuracy and reliability of the signal, and provide more accurate data for subsequent speed calculation.

[0078] In this patent, wireless transmission technology is used to transmit the preprocessed speed signal from the wheel hub to the vehicle control system, as the wheel hub rotates at high speed, traditional wired connection may be affected by mechanical wear or signal interference, while wireless transmission technology can realize contactless data transmission, with high reliability and anti-interference ability.

[0079] The vehicle control system is the core control unit of the vehicle, responsible for receiving and processing signals from various sensors, controlling various functions of the vehicle, and is usually composed of a microprocessor, memory and input / output interface, where the microprocessor is responsible for executing control algorithms and logical judgments, the memory is used to store programs and data, and the input / output interface is used for communication with other devices. The vehicle control system is not only used for engine management, transmission control and other core functions, but also for the realization of comfort, safety and intelligent functions of the vehicle. In this patent, the vehicle control system is the core component of the hub light control.

[0080] Pulse counting method is a method of measuring the speed by counting the pulse signals, for example, if the hub makes 10 pulses for the speed sensor per revolution, then the number of pulses received in 1 second divided by 10 and multiplied by 60 can get the hub speed (unit: revolutions / minute). In this patent, the vehicle control system uses the control module to calculate the speed of the hub by pulse counting method, providing accurate data support for subsequent light control.

[0081] Step S2, when the hub starts to rotate, and the hub speed ≥ 10 revolutions per minute, the vehicle control system automatically adjusts the light frequency and light intensity of the hub light assembly and the car logo light assembly according to the speed of the hub;

[0082] In step S2, it also includes the following sub-steps:

[0083] S2-1, set the mapping logic of the hub speed and the light frequency and light intensity of the light assembly, the light assembly includes the hub light assembly and the car logo light assembly, the mapping logic is as follows:

[0084] When the hub starts to rotate, and the hub speed ≥ 10 revolutions per minute and < 50 revolutions per minute, set the light frequency of the light assembly to flash 1-2 times per second, and the light intensity to 10-30 lumens;

[0085] When the hub speed ≥ 50 revolutions per minute and < 150 revolutions per minute, set the light frequency of the light assembly to flash 3-5 times per second, and the light intensity to 50-100 lumens;

[0086] When the hub speed ≥ 150 revolutions per minute, set the light frequency of the light assembly to flash 5-10 times per second, and the light intensity to 100-200 lumens;

[0087] S2-2, the vehicle control system uses the control module to automatically adjust the light frequency and light intensity of the hub light assembly and the car logo light assembly by pulse width modulation (PWM) technology according to the mapping logic.

[0088] It should be noted that the hub light-emitting assembly is a light-emitting device installed on the hub, which is used to emit light when the hub rotates, and plays a decorative and warning role. It usually includes light-emitting diodes (LEDs) and a shell, etc., where the LEDs are the core elements of light emission, and the shell plays a protective and fixing role. The hub light-emitting assembly receives control instructions from the vehicle control system through the circuit board, and uses PWM technology to control the light-emitting frequency and brightness of the LEDs.

[0089] The hub light-emitting assembly is widely used in personalized decoration and safety warning of vehicles. In the night or low-visibility conditions, the hub light-emitting can improve the visibility of the vehicle and remind other road users to pay attention to the existence of the vehicle.

[0090] The car logo light-emitting assembly is a light-emitting device installed on the car logo position, which is used to light up the car logo located on the side of the hub when the hub rotates, and plays a decorative and identification role. Its composition is similar to that of the hub light-emitting assembly, but the difference is that the shell design of the car logo light-emitting assembly is usually matched with the shape of the car logo to achieve better decorative effect. The car logo light-emitting assembly also receives control instructions from the vehicle control system through the circuit board, and uses PWM technology to control the light-emitting frequency and brightness of the LEDs.

[0091] The car logo light-emitting assembly is mainly used to improve the brand image and visual effect of the vehicle. In the night or low-visibility conditions, the light-emitting car logo can enhance the recognition of the vehicle, and also can be used as a personalized decorative element.

[0092] Pulse width modulation (PWM) is a technology that adjusts output power by controlling the width of pulse signals, which is widely used in power control and signal modulation of electronic devices. It adjusts the output power by changing the width of the pulse (i.e. the duration of the high level of the pulse), achieving precise control of the light-emitting frequency and brightness of the LEDs.

[0093] In this patent, PWM technology is used to control the light-emitting frequency and brightness of the hub light-emitting assembly and the car logo light-emitting assembly, achieving different visual effects.

[0094] Step S3, when the current speed of the hub < the speed of the previous time, and the hub speed < 10 revolutions per minute, the vehicle control system automatically switches to the parking warning mode;

[0095] In step S3, it further includes the following sub-steps:

[0096] S3-1, when the current speed of the hub < the speed of the previous time, and the hub speed < 10 revolutions per minute, the vehicle control system judges that the hub is in the state of about to stop, at this time, the vehicle control system detects the ambient brightness through the light sensor and sends a switching instruction to the light-emitting assembly, indicating the light-emitting assembly to enter the parking warning mode;

[0097] S3-2, after receiving the switching instruction, the light-emitting assembly automatically adjusts the light-emitting frequency, light-emitting brightness and light-emitting color according to the ambient light brightness using the control module through pulse width modulation (PWM) technology.

[0098] S3-3, in the parking warning mode, the vehicle control system monitors the working state of the speed sensor and the light-emitting assembly in real time, and when it detects that the speed sensor signal is lost or the light-emitting assembly is faulty, it notifies the driver of the fault through the instrument panel display, sound prompt or mobile phone application.

[0099] It should be noted that the light sensor is a sensor used to detect ambient light brightness, commonly used to automatically adjust the brightness of devices or trigger specific functions, which is based on the photoelectric effect. When ambient light shines on the sensor surface, a photodiode will generate a current or voltage signal proportional to the light intensity. By measuring the current or voltage signal, the ambient light brightness can be determined. In this patent, the light sensor is used to detect the ambient light brightness so that the light-emitting frequency, brightness and color of the light-emitting assembly can be automatically adjusted according to the strength of the ambient light in the parking warning mode. For example, in a darker environment, the light-emitting assembly can emit brighter light to improve the warning effect.

[0100] Speed sensor signal loss refers to the situation where the speed sensor cannot normally output the speed signal or the output signal cannot be correctly received by the vehicle control system. Speed sensor signal loss will cause the vehicle control system to be unable to accurately determine the speed state of the hub, affecting the normal switching and control of the parking warning mode, and thus affecting driving safety.

[0101] Sensor failure, signal transmission line failure, electromagnetic interference or loose mechanical connection between the sensor and the hub can all cause speed sensor signal loss. The vehicle control system can determine whether the signal is lost by monitoring the integrity and quality of the signal. For example, if no speed signal is received within a certain period of time, or the received signal has obvious errors (such as abnormal pulse frequency or signal amplitude), it can be determined that the signal is lost.

[0102] Light-emitting assembly failure refers to the situation where the light-emitting assembly cannot work normally, cannot emit light according to the instructions of the vehicle control system or the light-emitting effect does not meet the requirements. Light-emitting assembly failure will affect the effect of the parking warning mode and reduce the visibility and warning function of the vehicle.

[0103] LED lamp bead burning, electronic components on the circuit board damage, power module output instability, connection line loose or short circuit, etc. may cause light emitting assembly failure. The vehicle-mounted control system can judge whether the light emitting assembly is working normally by monitoring the current, voltage, light emitting frequency and brightness of the light emitting assembly, for example, if the current or voltage of the light emitting assembly is detected to be abnormal, or the light emitting frequency and brightness do not meet the preset value, it can be judged that the light emitting assembly fails.

[0104] The instrument panel is usually composed of liquid crystal display screen or mechanical instrument, receiving data of various sensors and control units through the vehicle-mounted control system, and displaying these data to the driver in the form of graphics, text or numbers. In this patent, when the loss of speed sensor signal or light emitting assembly failure is detected, the vehicle-mounted control system will display the fault information through the instrument panel to remind the driver.

[0105] Step S4, when the hub is completely stopped, the vehicle-mounted control system automatically switches to the parking lighting mode;

[0106] In step S4, the following sub-steps are also included:

[0107] S4-1, when the hub speed drops to 0, the vehicle-mounted control system judges that the hub is in a completely stopped state, at this time, the vehicle-mounted control system detects the ambient light brightness through the light sensor and sends a switching instruction to the light emitting assembly, instructing the light emitting assembly to enter the parking lighting mode;

[0108] S4-2, after receiving the switching instruction, the light emitting assembly adjusts the light emitting frequency, light emitting brightness and light emitting color automatically according to the ambient light brightness by using the control module through pulse width modulation (PWM) technology;

[0109] S4-3, after the light emitting assembly enters the parking lighting mode for 1 minute, the parking lighting mode is automatically turned off;

[0110] S4-4, if the vehicle restarts during the parking lighting mode, the parking lighting mode is interrupted and returns to step S2.

[0111] The above-described embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.

Claims

1. A luminous wheel hub with a vertical parking sign structure, comprising a wheel hub (1), characterized in that: A card slot is provided at the center position of the outer side of the wheel hub (1), a fixing block (3) is detachably mounted on one side of the card slot, a ring plate (8) is detachably mounted on the side of the fixing block (3) close to the wheel hub (1), an inwardly recessed mounting slot is provided at the center position of the side of the fixing block (3) away from the wheel hub (1), a connecting plate (10) is rotatably mounted inside the mounting slot via a bearing, a circuit board (11) is detachably mounted on the side of the connecting plate (10) away from the wheel hub (1), a power supply is provided between the connecting plate (10), the circuit board (11) and the ring plate (8); a vehicle logo plate (14) is fixedly connected to the outer periphery of the side of the circuit board (11) away from the connecting plate (10) by bolts, a protective cover (4) is detachably mounted on the outer side of the vehicle logo plate (14), and the protective cover (4) is made of a transparent material; A counterweight mechanism is provided between the connecting plate (10) and the circuit board (11), and the counterweight mechanism is used to ensure the stability of the connecting plate (10) and the circuit board (11) during the rotation of the wheel hub (1); A lighting system is provided on a side of the circuit board (11) away from the connecting plate (10) and on the outer surface of the hub (1).

2. The luminous wheel hub with a vertical parking sign structure according to claim 1, characterized in that: The fixing block (3) is fixedly connected to a plurality of buckles (5) and a separately installed positioning block (7) in a ring array at a center position near one side of the card slot. The plurality of buckles (5) are movably connected to an elastic ring (6). The buckles (5), the elastic ring (6) and the positioning block (7) can be embedded in the card slot through the cooperation of the buckles (5), the elastic ring (6) and the positioning block (7).

3. The luminous wheel hub with a vertical parking sign structure according to claim 1, characterized in that: The power supply comprises four magnets (9) fixedly mounted on a ring plate (8) in a ring array, and a power generation component (12) fixedly mounted on a circuit board (11). The four magnets (9) cooperate with the power generation component (12) to generate current.

4. The luminous wheel hub with a vertical parking sign structure according to claim 3, characterized in that: The lighting system comprises a vehicle logo luminous assembly (13) mounted on a surface of a circuit board (11) away from the connecting plate (10), and a wheel hub luminous assembly (2) detachably mounted on the outer surface of the wheel hub (1), wherein both the wheel hub luminous assembly (2) and the vehicle logo luminous assembly (13) are electrically connected to the circuit board (11); The lighting system further comprises a control module (15) fixedly mounted on the circuit board (11); the vehicle logo luminous component (13) and the wheel hub luminous component (2) both have color changing and breathing effects and are controlled by the control module (15).

5. The luminous wheel hub with a vertical parking sign structure according to claim 1, characterized in that: The counterweight mechanism comprises a counterweight plate (16) fixedly mounted on a circuit board (11), and a counterweight block (17) designed in an arc shape is detachably mounted on the lower end of the counterweight plate (16).

6. A method for controlling a luminous wheel hub having a vertical parking sign structure, characterized in that: The method includes: Step S1, monitoring the wheel hub speed in real time through a speed sensor and transmitting it to the vehicle control system; Step S2: When the wheel hub starts to rotate and the wheel hub speed is ≥10 rpm, the vehicle control system automatically adjusts the luminous frequency and luminous brightness of the wheel hub light-emitting component and the vehicle logo light-emitting component according to the wheel hub speed; Step S3: When the current wheel speed is less than the previous speed and the wheel speed is less than 10 revolutions per minute, the vehicle control system automatically switches to the parking warning mode; Step S4: When the wheel hub comes to a complete stop, the vehicle control system automatically switches to the parking lighting mode.

7. The control method of the luminous wheel hub with a vertical parking sign structure according to claim 6, characterized in that: Wherein, step S1 further includes the following sub-steps: S1-1, collects the wheel hub speed signal in real time through the speed sensor installed on the wheel hub; S1-2, filtering, amplifying, and shaping the wheel hub speed signal using a signal processor to obtain a preprocessed speed signal, and transmitting the preprocessed speed signal to an onboard control system using wireless transmission technology; S1-3, the vehicle control system receives the pre-processed speed signal, calculates the wheel hub speed according to the pulse counting method and stores it in the memory of the vehicle control system.

8. The control method of the luminous wheel hub with a vertical parking sign structure according to claim 6, characterized in that: Wherein, in step S2, the following sub-steps are also included: S2-1, setting the mapping logic between the wheel hub speed and the light-emitting frequency and brightness of the light-emitting components. The light-emitting components include the wheel hub light-emitting components and the vehicle logo light-emitting components. The mapping logic is as follows: When the wheel hub starts to rotate, and the wheel hub speed is ≥10 rpm and <50 rpm, the light-emitting component is set to flash 1 to 2 times per second and the brightness is 10 to 30 lumens; When the wheel hub speed is ≥50 rpm and <150 rpm, the light-emitting component is set to flash 3 to 5 times per second and the brightness is 50 to 100 lumens; When the wheel hub speed is ≥150 rpm, the light-emitting component is set to flash 5 to 10 times per second and the brightness is 100 to 200 lumens; S2-2, the vehicle control system uses the control module to automatically adjust the luminous frequency and luminous brightness of the wheel hub luminous component and the vehicle logo luminous component through pulse width modulation technology according to the mapping logic.

9. The control method of the luminous wheel hub with a vertical stop sign structure according to claim 6, characterized in that: Wherein, in step S3, the following sub-steps are also included: S3-1: When the current wheel speed is less than the previous speed and the wheel speed is less than 10 revolutions per minute, the vehicle control system determines that the wheel is about to stop. At this time, the vehicle control system detects the ambient light brightness through the light sensor and sends a switching instruction to the light-emitting component, instructing the light-emitting component to enter the parking warning mode; S3-2, after receiving the switching instruction, the light-emitting component automatically adjusts the light-emitting frequency, light-emitting brightness and light-emitting color according to the ambient light brightness through the control module through pulse width modulation technology; S3-3, in parking warning mode, the vehicle control system monitors the working status of the speed sensor and the light-emitting component in real time. When it detects that the speed sensor signal is lost or the light-emitting component fails, it sends a fault notification to the driver through the instrument panel display, sound prompt or mobile phone application.

10. The control method of the luminous wheel hub with a vertical parking sign structure according to claim 6, characterized in that: Wherein, in step S4, the following sub-steps are also included: S4-1, when the wheel hub speed drops to 0, the vehicle control system determines that the wheel hub is in a completely stopped state. At this time, the vehicle control system detects the ambient light brightness through the light sensor and sends a switching instruction to the light-emitting component, instructing the light-emitting component to enter the parking lighting mode; S4-2, after receiving the switching instruction, the light-emitting component automatically adjusts the light-emitting frequency, light-emitting brightness and light-emitting color according to the ambient light brightness by using the control module through pulse width modulation technology; S4-3, after the light-emitting component enters the parking lighting mode for 1 minute, the parking lighting mode is automatically turned off; S4-4: If the vehicle is restarted during the parking lighting mode, the parking lighting mode is interrupted and the process returns to step S2.

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