Wireless charging system and method for tire pressure sensor and related equipment

Abstract

The embodiment of the invention discloses a wireless charging system and method for a tire pressure sensor and related equipment, and belongs to the technical field of charging. In the wireless charging system of the tire pressure sensor, an electromagnetic wave transmitting module is arranged outside a tire, the transmitting end of the electromagnetic wave transmitting module faces a hub of the tire, and the electromagnetic wave transmitting module is used for transmitting electromagnetic wave beams through the transmitting end; a wave-transparent window made of a non-metal material is embedded in the hub, and the electromagnetic wave receiving module is arranged at the position, corresponding to the wave-transparent window, in the tire; the beam control module is used for adjusting the transmitting end direction of the electromagnetic wave transmitting module, so that electromagnetic wave beams transmitted by the electromagnetic wave transmitting module are transmitted to the electromagnetic wave receiving module through the wave-transparent window; the electromagnetic wave receiving module is connected with the tire pressure sensor and is used for charging the tire pressure sensor based on the received electromagnetic waves; energy loss of electromagnetic waves is effectively avoided, and normal charging of the tire pressure sensor is ensured.

Description

Technical Field

[0001] This application relates to the field of charging technology, and in particular to a wireless charging system, method and related equipment for a tire pressure sensor. Background Technology

[0002] A tire pressure monitoring system (TPMS) is an electronic system installed in a car that uses tire pressure sensors to monitor tire pressure, temperature, and other parameters in real time, and alerts the driver when abnormalities occur.

[0003] Current tire pressure sensors are powered by button batteries, which have a short lifespan, typically requiring replacement every 3-5 years. During the vehicle's lifetime, the tire pressure sensor batteries need to be replaced multiple times, resulting in significant maintenance time and costs. To address this battery replacement issue, wireless charging technology is commonly used to power the tire pressure sensors. This technology employs electromagnetic waves to wirelessly charge the sensor's battery.

[0004] Currently, tires have metal (aluminum alloy or steel, etc.) rims. During wireless charging, electromagnetic waves need to pass through the metal rim to power the tire pressure sensor. However, the metal rim reflects or absorbs the electromagnetic waves, causing energy loss and affecting the normal charging of the tire pressure sensor. Summary of the Invention

[0005] This application provides a wireless charging system, method, and related equipment for tire pressure sensors, which can effectively avoid energy loss of electromagnetic waves and ensure normal charging of tire pressure sensors.

[0006] This application provides a wireless charging system for a tire pressure sensor, including: an electromagnetic wave transmitting module, a beam control module, and an electromagnetic wave receiving module;

[0007] The electromagnetic wave transmitting module is disposed outside the tire, with the transmitting end of the electromagnetic wave transmitting module facing the tire hub, and the electromagnetic wave transmitting module is used to transmit an electromagnetic wave beam through the transmitting end.

[0008] The wheel hub is provided with a non-metallic wave-transparent window, and the electromagnetic wave receiving module is located inside the tire at the position corresponding to the wave-transparent window.

[0009] The beam control module is used to adjust the direction of the transmitting end of the electromagnetic wave transmitting module so that the electromagnetic wave beam emitted by the electromagnetic wave transmitting module is transmitted to the electromagnetic wave receiving module through the wave-transmitting window.

[0010] The electromagnetic wave receiving module is connected to the tire pressure sensor, and the electromagnetic wave receiving module is used to charge the tire pressure sensor based on the received electromagnetic waves.

[0011] Furthermore, the beam control module is communicatively connected to the tire pressure sensor;

[0012] The beam control module is specifically used to receive the signal strength received by the electromagnetic wave receiving module from the tire pressure sensor, and adjust the direction of the transmitting end of the electromagnetic wave transmitting module based on the signal strength.

[0013] Furthermore, adjusting the transmitting end direction of the electromagnetic wave transmitting module based on the signal strength includes:

[0014] When the signal strength weakens, the transmitting end of the electromagnetic wave transmitting module is adjusted toward the rotation direction of the tire.

[0015] When the signal strength increases, the direction of the transmitting end of the electromagnetic wave transmitting module is kept constant.

[0016] Furthermore, the beam control module is communicatively connected to the tire pressure sensor, and the tire pressure sensor is located close to the electromagnetic wave receiving module;

[0017] The beam control module is specifically used to receive the target position of the tire pressure sensor on the wheel hub from the tire pressure sensor and adjust the direction of the transmitting end of the electromagnetic wave transmitting module toward the target position.

[0018] Furthermore, the electromagnetic wave transmitting module includes: a high-frequency oscillator, a power amplifier, and a directional antenna;

[0019] The high-frequency oscillator is connected to the directional antenna. The high-frequency oscillator is used to generate high-frequency electromagnetic waves with a frequency band greater than a preset threshold and transmit the high-frequency electromagnetic waves to the directional antenna.

[0020] The power amplifier is connected to the directional antenna, and the power amplifier is used to drive the directional antenna to transmit the electromagnetic wave beam corresponding to the high-frequency electromagnetic wave.

[0021] Furthermore, the electromagnetic wave receiving module includes: a receiving antenna, a rectifier circuit, and a power management chip;

[0022] The receiving antenna is connected to the rectifier circuit. The receiving antenna is used to receive the electromagnetic wave beam corresponding to the high-frequency electromagnetic wave and transmit the high-frequency electromagnetic wave to the rectifier circuit.

[0023] The rectifier circuit is connected to the power management chip. The rectifier circuit is used to rectify the high-frequency electromagnetic wave into DC power and transmit the DC power to the power management chip.

[0024] The power management chip is connected to the tire pressure sensor, and the power management chip is used to regulate the DC power and transmit it to the tire pressure sensor.

[0025] Furthermore, the dielectric constant of the non-metallic material corresponding to the wave-transmitting window is less than a preset constant threshold, and / or the loss tangent of the non-metallic material is less than a preset percentage threshold.

[0026] This application also provides a wireless charging method for a tire pressure sensor, including:

[0027] The electromagnetic wave emitting module is controlled to emit an electromagnetic wave beam through its emitting end; the electromagnetic wave emitting module is disposed outside the tire, and the emitting end of the electromagnetic wave emitting module faces the tire hub;

[0028] The beam control module adjusts the direction of the transmitting end of the electromagnetic wave transmitting module so that the electromagnetic wave beam emitted by the electromagnetic wave transmitting module passes through the wave-transparent window of the non-metallic material embedded in the wheel hub and is transmitted to the electromagnetic wave receiving module; the electromagnetic wave receiving module is located in the tire at the position corresponding to the wave-transparent window;

[0029] The electromagnetic wave receiving module is controlled to charge the tire pressure sensor based on the received electromagnetic waves.

[0030] This application also provides a wireless charging device for a tire pressure sensor, including:

[0031] Central processing unit, memory, input / output interface, wired or wireless network interface, power supply;

[0032] The memory is either a short-term storage memory or a persistent storage memory;

[0033] The central processing unit is configured to communicate with the memory and execute instructions in the memory on a control plane functional entity to perform the methods described above.

[0034] This application also provides a computer-readable storage medium including instructions that, when executed on a computer, cause the computer to perform the method described above.

[0035] As can be seen from the above technical solutions, the embodiments of this application have the following advantages:

[0036] In this embodiment, the wireless charging system for the tire pressure sensor includes: an electromagnetic wave transmitting module, a beam control module, and an electromagnetic wave receiving module. The electromagnetic wave transmitting module is disposed outside the tire, with its transmitting end facing the tire's rim. The electromagnetic wave transmitting module transmits an electromagnetic wave beam through its transmitting end. A non-metallic transparent window is embedded in the rim, and the electromagnetic wave receiving module is disposed inside the tire at a position corresponding to the transparent window. The beam control module adjusts the direction of the transmitting end of the electromagnetic wave transmitting module so that the electromagnetic wave beam emitted by the transmitting module is transmitted through the transparent window to the electromagnetic wave receiving module. The electromagnetic wave receiving module is connected to the tire pressure sensor and is used to charge the tire pressure sensor based on the received electromagnetic waves. The electromagnetic wave beam is transmitted to the electromagnetic wave receiving module through the non-metallic transparent window on the rim, which avoids reflection or absorption of electromagnetic waves by the metal rim, effectively preventing energy loss of the electromagnetic waves and ensuring normal charging of the tire pressure sensor. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings.

[0038] Figure 1 This is a communication network architecture diagram disclosed in an embodiment of this application;

[0039] Figure 2 This is a structural diagram of a wireless charging system for a tire pressure sensor disclosed in an embodiment of this application;

[0040] Figure 3 This is a structural diagram of an electromagnetic wave transmitting module and an electromagnetic wave receiving module disclosed in an embodiment of this application;

[0041] Figure 4 This is a flowchart illustrating the wireless charging process of a tire pressure sensor disclosed in an embodiment of this application.

[0042] Figure 5 This is a diagram of a wireless charging device for a tire pressure sensor disclosed in an embodiment of this application. Detailed Implementation

[0043] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0044] In the description of the embodiments of this application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0045] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0046] Existing tire pressure sensors are powered by button batteries, which have a short lifespan and need to be replaced when depleted. Replacing the battery requires tire removal, which is costly, and discarded batteries cause environmental pollution. To solve the battery replacement problem of tire pressure sensors, wireless charging technology is often used to power them. Wireless charging architectures include... Figure 1 As shown, the system includes a wireless charging system 100 and a tire pressure sensor 200. The wireless charging system 100 can wirelessly charge the battery of the tire pressure sensor 200 using electromagnetic waves. If the wireless charging method is electromagnetic induction, the wireless charging system 100 includes a transmitting coil and a receiving coil. The transmitting coil emits low-frequency electromagnetic waves, and the receiving coil receives the low-frequency electromagnetic waves to charge the tire pressure sensor 200 through electromagnetic induction.

[0047] However, the rim of a tire is made of metal (such as aluminum alloy or steel). During wireless charging, electromagnetic waves need to pass through the metal rim to power the tire pressure sensor. The metal rim reflects or absorbs these electromagnetic waves, causing energy loss and affecting the normal charging of the tire pressure sensor. Therefore, this application discloses a wireless charging system for a tire pressure sensor that effectively avoids energy loss of electromagnetic waves and ensures normal charging of the tire pressure sensor. Figure 2 As shown, the details are as follows:

[0048] In this embodiment, the wireless charging system 100 for a tire pressure sensor includes an electromagnetic wave transmitting module 101, a beam control module 102, and an electromagnetic wave receiving module 103. The tire pressure sensor 200 is installed inside the tire, and can be installed inside the tire rim to detect tire pressure. The electromagnetic wave transmitting module 101 is located outside the tire, with its transmitting end facing the tire rim. Alternatively, the electromagnetic wave transmitting module 101 can be mounted on a side panel spaced from the tire side, and fixedly installed on the side panel. The electromagnetic wave transmitting module 101 transmits an electromagnetic wave beam through its transmitting end, i.e., it transmits an electromagnetic wave beam towards the rim. The electromagnetic wave beam is a concentrated beam of electromagnetic energy radiated in a specific direction. The transmitting end of the electromagnetic wave transmitting module 101 can be designed using structures such as reflectors or oscillator arrays to concentrate the electromagnetic waves in a specific direction, forming an electromagnetic wave beam. The electromagnetic transmission module 101 can transmit low-frequency electromagnetic wave beams (such as 100kHz or 200kHz electromagnetic waves) or high-frequency electromagnetic wave beams (such as 8MHz or 9MHz electromagnetic waves), the specifics of which are not limited here. It can be understood that when the electromagnetic wave beam falls on the wheel hub, it occupies a certain area of ​​the wheel hub.

[0049] The tire features a non-metallic wave-transparent window embedded in its rim, with an electromagnetic wave receiving module 103 positioned corresponding to this window within the tire. This non-metallic material can be ceramic or a non-metallic composite material such as PTFE (polytetrafluoroethylene), and is not specifically limited here. The wave-transparent window, formed by the non-metallic material, passes through the tire rim, creating an electromagnetic wave channel. Electromagnetic waves are transmitted to the electromagnetic receiving module 103 within the tire via this channel. It is understood that the area of ​​the wave-transparent window is smaller than the rim area, and the rim may have one or more wave-transparent windows, and is not specifically limited here.

[0050] The beam control module 102 is used to adjust the direction of the transmitting end of the electromagnetic wave transmitting module 101 so that the electromagnetic wave beam emitted by the electromagnetic wave transmitting module 101 is transmitted through the transparent window to the electromagnetic wave receiving module 103. It is understood that during vehicle operation, the tire rim rotates, and the transparent window on the rim also rotates. To ensure that more electromagnetic wave beams are transmitted through the transparent window to the electromagnetic wave receiving module 103 during wireless charging, the beam control module 102 can adjust the direction of the transmitting end of the electromagnetic wave transmitting module 102 towards the position of the transparent window on the rim, so as to follow the rotation of the transparent window and direct the electromagnetic wave beam emitted by the transmitting end of the electromagnetic wave transmitting module 102 toward the transparent window. It is understood that the beam control module 102 can control the horizontal rotation or vertical tilt of the transmitting end of the electromagnetic wave transmitting module 101; during horizontal rotation, the azimuth angle of the transmitting end can be rotated (e.g., 0°~360°) through the base turntable or gear mechanism; during vertical tilt, the up and down tilt angle of the antenna can be adjusted (e.g., -90°~+90°) through bolts, clips or telescopic rods.

[0051] At this time, the electromagnetic wave beam emitted by the electromagnetic wave transmitting module 101 is transmitted to the electromagnetic wave receiving module 103 through the wave-transparent window of the non-metallic material. Compared with the hub of the metal material, the electromagnetic wave beam can penetrate the wave-transparent window of the non-metallic material more completely, avoiding the shielding of electromagnetic waves by the hub of the metal material and effectively reducing energy loss.

[0052] An electromagnetic wave receiving module 103 is connected to the tire pressure sensor 200. The electromagnetic wave receiving module 103 is used to charge the tire pressure sensor 200 based on the received electromagnetic waves. That is, the electromagnetic wave receiving module 103 can charge the battery of the tire pressure sensor 200 based on electromagnetic wave energy. After the battery of the tire pressure sensor 200 is fully charged, it supplies power to the main control chip of the tire pressure sensor 200. The main control chip of the tire pressure sensor 200 can control the pressure / temperature sensor to detect the pressure or temperature inside the tire, and transmit the corresponding pressure data or temperature data to the vehicle's electronic control unit (ECU) via a radio frequency (RF) transmitter module.

[0053] As can be seen, in this embodiment, the wireless charging system for the tire pressure sensor includes: an electromagnetic wave transmitting module, a beam control module, and an electromagnetic wave receiving module. The electromagnetic wave transmitting module is disposed outside the tire, with its transmitting end facing the tire's rim. The electromagnetic wave transmitting module is used to transmit an electromagnetic wave beam through its transmitting end. A non-metallic transparent window is embedded in the rim, and the electromagnetic wave receiving module is disposed inside the tire at a position corresponding to the transparent window. The beam control module is used to adjust the direction of the transmitting end of the electromagnetic wave transmitting module so that the electromagnetic wave beam emitted by the electromagnetic wave transmitting module is transmitted through the transparent window to the electromagnetic wave receiving module. The electromagnetic wave receiving module is connected to the tire pressure sensor and is used to charge the tire pressure sensor based on the received electromagnetic waves. The electromagnetic wave beam is transmitted to the electromagnetic wave receiving module through the non-metallic transparent window on the rim, which can avoid the metal rim reflecting or absorbing electromagnetic waves, effectively avoiding energy loss of electromagnetic waves and ensuring normal charging of the tire pressure sensor.

[0054] Furthermore, in this embodiment, the beam control module 102 is communicatively connected to the tire pressure sensor 200, and this communication connection can be a wireless network connection. Specifically, the beam control module 102 is used to receive the signal strength fed back by the tire pressure sensor 200 from the electromagnetic wave receiving module 103, and adjust the transmitting end direction of the electromagnetic wave transmitting module 101 based on the signal strength. It can be understood that the electromagnetic wave receiving module 103 provides charging current to the tire pressure sensor 200 based on the received electromagnetic waves. The tire pressure sensor 200 can determine the signal strength (i.e., the received electromagnetic wave signal strength) received by the electromagnetic wave receiving module 103 based on the magnitude of the charging current. The larger the charging current, the stronger the signal strength received by the electromagnetic wave receiving module 103; the smaller the charging current, the weaker the signal strength received by the electromagnetic wave receiving module 103. The beam control module 102 adjusts the transmitting end direction of the electromagnetic wave transmitting module 101 based on the feedback signal strength, enabling more timely adjustment of the transmitting end direction of the electromagnetic wave transmitting module 101.

[0055] Specifically, adjusting the transmitting direction of the electromagnetic wave transmitting module 101 based on signal strength is as follows: when the signal strength weakens, the transmitting direction of the electromagnetic wave transmitting module 101 is adjusted towards the rotation direction of the tire; when the signal strength strengthens, the transmitting direction of the electromagnetic wave transmitting module 101 is kept constant. It can be understood that when the signal strength weakens, it indicates that as the tire rotates, the wave-transmitting window moves away from the electromagnetic wave beam emitted by the current electromagnetic wave transmitting module 101. In this case, the transmitting direction of the electromagnetic wave transmitting module 101 needs to be adjusted towards the rotation direction of the tire so that the electromagnetic wave beam emitted by the electromagnetic wave transmitting module 101 is closer to the wave-transmitting window on the wheel hub. For example, if the tire rotates in a clockwise direction, the transmitting direction of the electromagnetic wave transmitting module 101 can be adjusted clockwise.

[0056] Furthermore, in this embodiment, the beam control module 102 is communicatively connected to the tire pressure sensor 200, which is located close to the electromagnetic wave receiving module 103; that is, the position of the tire pressure sensor 200 is the position of the electromagnetic wave receiving module 103, which is positioned at the location corresponding to the wave-transmitting window inside the tire. Specifically, the beam control module 102 receives the target position of the tire pressure sensor 200 on the wheel hub from the tire pressure sensor 200 and adjusts the transmitting end of the electromagnetic wave transmitting module 101 toward the target position. This target position can be the upper, lower, left, or right side of the wheel hub, and is not specifically limited here. The tire pressure sensor 200 can use an inertial measurement unit (IMU) to detect its target position on the wheel hub. It is understandable that the target position of the tire pressure sensor 200 on the wheel hub is the position of the wave-transmitting window on the wheel hub. The beam control module 102 adjusts the transmitting end direction of the electromagnetic wave transmitting module 101 toward the target position, that is, adjusts the transmitting end direction of the electromagnetic wave transmitting module 101 toward the position of the wave-transmitting window, so as to accurately adjust the transmitting end direction of the electromagnetic wave transmitting module 101.

[0057] Furthermore, preferably, in the embodiments of this application, the electromagnetic wave transmitting module emits high-frequency electromagnetic waves. Compared with low-frequency electromagnetic waves, high-frequency electromagnetic waves have a smaller skin effect on non-metallic materials, that is, high-frequency electromagnetic waves have stronger penetrating power through the wave-transmitting window of non-metallic materials, further reducing the energy loss of electromagnetic waves.

[0058] like Figure 3 As shown in the embodiment of this application, the electromagnetic wave transmitting module 101 includes: a high-frequency oscillator 1011, a power amplifier 1012, and a directional antenna 1013. The high-frequency oscillator 1011 is connected to the directional antenna 1013. The high-frequency oscillator 1011 generates high-frequency electromagnetic waves with a frequency band greater than a preset threshold and transmits these high-frequency electromagnetic waves to the directional antenna 1013. The high-frequency oscillator 1011 can be a GaN HEMT (gallium nitride high electron mobility transistor) or a high-frequency oscillator composed of an LC oscillator and an amplifier; specific characteristics are not limited here. The preset threshold for the high-frequency band can be 6MHz or 7MHz; specific characteristics are not limited here. The high-frequency oscillator 1011 can generate high-frequency electromagnetic waves greater than 6.78MHz, or millimeter waves of 30-300GHz; specific characteristics are not limited here. The power amplifier 1012 can be an operational amplifier (PA), and the directional antenna 1013 can be a microstrip patch antenna or a parabolic antenna; specific characteristics are not limited here. The power amplifier 1012 is connected to the directional antenna 1013, and the power amplifier 1012 is used to drive the directional antenna 1013 to transmit the electromagnetic wave beam corresponding to the high-frequency electromagnetic wave.

[0059] Furthermore, in this embodiment, the electromagnetic wave receiving module 103 includes: a receiving antenna 1031, a rectifier circuit 1032, and a power management chip 1033. The receiving antenna 1031 is connected to the rectifier circuit 1032 and is used to receive the electromagnetic wave beam corresponding to the high-frequency electromagnetic wave, transmitting the high-frequency electromagnetic wave to the rectifier circuit 1032. The rectifier circuit 1032 can be a diode rectifier circuit or a thyristor rectifier circuit, and is not specifically limited here. The rectifier circuit 1032 is connected to the power management chip 1033 and is used to rectify the high-frequency electromagnetic wave into DC power and transmit the DC power to the power management chip 1033. The power management chip (PMIC) 1033 is connected to the tire pressure sensor and is used to regulate the DC power before transmitting it to the tire pressure sensor. The power management chip 1033 can regulate the DC power to 3.3V to charge the tire pressure sensor. Understandably, the electromagnetic wave receiving module 103 uses a rectifier circuit 1032 for rectification and a power management chip 1033 for voltage regulation to avoid signal fluctuations and interference, thus ensuring normal power supply to the tire pressure sensor.

[0060] Furthermore, in this embodiment, the dielectric constant of the non-metallic material corresponding to the wave-transmitting window is less than a preset constant threshold, and / or the loss tangent of the non-metallic material is less than a preset percentage threshold. The preset constant threshold can be 10 or 11, and is not specifically limited here; the preset percentage threshold can be 0.01 or 0.02, and is not specifically limited here. By selecting a non-metallic material with a dielectric constant less than the preset constant threshold and / or a loss tangent less than the preset percentage threshold, the loss of electromagnetic waves by the non-metallic material can be effectively avoided.

[0061] This application also provides a wireless charging method for a tire pressure sensor, such as... Figure 4 As shown, it includes:

[0062] 401. Control the electromagnetic wave transmitting module to transmit electromagnetic wave beams through the transmitting end.

[0063] In this embodiment of the application, the wireless charging device of the tire pressure sensor can control the electromagnetic wave transmitting module to emit an electromagnetic wave beam through the transmitting end; wherein, the electromagnetic wave transmitting module is disposed outside the tire, and the transmitting end of the electromagnetic wave transmitting module faces the tire rim; that is, the electromagnetic wave transmitting module is controlled to emit an electromagnetic wave beam toward the tire rim.

[0064] 402. The control beam control module adjusts the direction of the transmitting end of the electromagnetic wave transmitting module so that the electromagnetic wave beam emitted by the electromagnetic wave transmitting module can be transmitted to the electromagnetic wave receiving module through the wave-transmitting window of the non-metallic material embedded on the hub.

[0065] In this embodiment, the beam control module can be controlled to adjust the direction of the transmitting end of the electromagnetic wave transmitting module, so that the electromagnetic wave beam emitted by the electromagnetic wave transmitting module can be transmitted to the electromagnetic wave receiving module through the wave-transparent window of the non-metallic material embedded in the wheel hub. The electromagnetic wave receiving module is located at the position corresponding to the wave-transparent window inside the tire.

[0066] 403. Control the electromagnetic wave receiving module to charge the tire pressure sensor based on the received electromagnetic waves.

[0067] After the electromagnetic wave receiving module receives the electromagnetic wave beam, it can be controlled to charge the tire pressure sensor based on the received electromagnetic wave. The electromagnetic wave beam is transmitted to the electromagnetic wave receiving module through the wave-transmitting window of the non-metallic material on the wheel hub, which can avoid the reflection or absorption of electromagnetic waves by the metal wheel hub, effectively avoid the energy loss of electromagnetic waves, and ensure the normal charging of the tire pressure sensor.

[0068] This application embodiment also provides a wireless charging device 500 for a tire pressure sensor, such as... Figure 5 As shown, the wireless charging device 500 of this application embodiment may include one or more central processing units (CPUs) 501 and a memory 502, wherein the memory 502 stores one or more applications or data.

[0069] The memory 502 can be volatile or persistent storage. The program stored in the memory 502 can include one or more modules, each module including a series of instruction operations on the electronic device. Furthermore, the central processing unit 501 can be configured to communicate with the memory 502 and execute the series of instruction operations stored in the memory 502 on the wireless charging device 500.

[0070] The wireless charging device 500 may also include one or more power supplies 505, one or more wired or wireless network interfaces 504, one or more input / output interfaces 503, and / or one or more operating systems, such as Windows Server™, Mac OS X™, Unix™, Linux™, FreeBSD™, etc.

[0071] The central processing unit 501 can perform the operations performed by the first aspect or any specific method embodiment of the first aspect, which will not be described in detail here.

[0072] This application also provides a computer-readable storage medium including instructions that, when executed on a computer, cause the computer to perform the method described above.

[0073] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0074] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection between apparatuses or units through some interfaces, and may be electrical, mechanical, or other forms.

[0075] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0076] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0077] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

Claims

1. A wireless charging system for a tire pressure sensor, characterized in that, include: Electromagnetic wave transmitting module, beam control module, electromagnetic wave receiving module; The electromagnetic wave emitting module is disposed on the outside of the tire, and the emitting end of the electromagnetic wave emitting module faces the wheel hub of the tire. The electromagnetic wave emitting module is used to emit an electromagnetic wave beam through the emitting end. The wheel hub is provided with a non-metallic wave-transparent window, and the electromagnetic wave receiving module is located inside the tire at the position corresponding to the wave-transparent window. The beam control module is used to adjust the direction of the transmitting end of the electromagnetic wave transmitting module so that the electromagnetic wave beam emitted by the electromagnetic wave transmitting module is transmitted to the electromagnetic wave receiving module through the wave-transmitting window. The electromagnetic wave receiving module is connected to the tire pressure sensor, and the electromagnetic wave receiving module is used to charge the tire pressure sensor based on the received electromagnetic waves.

2. The wireless charging system according to claim 1, characterized in that, The beam control module is communicatively connected to the tire pressure sensor. The beam control module is specifically used to receive the signal strength received by the electromagnetic wave receiving module from the tire pressure sensor, and adjust the direction of the transmitting end of the electromagnetic wave transmitting module based on the signal strength.

3. The wireless charging system according to claim 2, characterized in that, The adjustment of the transmitting end direction of the electromagnetic wave transmitting module based on the signal strength includes: When the signal strength weakens, the transmitting end of the electromagnetic wave transmitting module is adjusted to face the rotation direction of the tire. When the signal strength increases, the direction of the transmitting end of the electromagnetic wave transmitting module is kept constant.

4. The wireless charging system according to claim 1, characterized in that, The beam control module is communicatively connected to the tire pressure sensor, and the tire pressure sensor is located close to the electromagnetic wave receiving module; The beam control module is specifically used to receive the target position of the tire pressure sensor on the wheel hub from the tire pressure sensor and adjust the direction of the transmitting end of the electromagnetic wave transmitting module toward the target position.

5. The wireless charging system according to claim 1, characterized in that, The electromagnetic wave transmitting module includes: a high-frequency oscillator, a power amplifier, and a directional antenna; The high-frequency oscillator is connected to the directional antenna. The high-frequency oscillator is used to generate high-frequency electromagnetic waves with a frequency band greater than a preset threshold and transmit the high-frequency electromagnetic waves to the directional antenna. The power amplifier is connected to the directional antenna, and the power amplifier is used to drive the directional antenna to transmit the electromagnetic wave beam corresponding to the high-frequency electromagnetic wave.

6. The wireless charging system according to claim 5, characterized in that, The electromagnetic wave receiving module includes: a receiving antenna, a rectifier circuit, and a power management chip; The receiving antenna is connected to the rectifier circuit. The receiving antenna is used to receive the electromagnetic wave beam corresponding to the high-frequency electromagnetic wave and transmit the high-frequency electromagnetic wave to the rectifier circuit. The rectifier circuit is connected to the power management chip. The rectifier circuit is used to rectify the high-frequency electromagnetic wave into DC power and transmit the DC power to the power management chip. The power management chip is connected to the tire pressure sensor, and the power management chip is used to regulate the DC power and transmit it to the tire pressure sensor.

7. The wireless charging system according to claim 1, characterized in that, The dielectric constant of the non-metallic material corresponding to the wave-transmitting window is less than a preset constant threshold, and / or the loss tangent of the non-metallic material is less than a preset percentage threshold.

8. A wireless charging method for a tire pressure sensor, characterized in that, include: The electromagnetic wave transmitting module is controlled to transmit an electromagnetic wave beam through the transmitting end. The electromagnetic wave emitting module is disposed outside the tire, and the emitting end of the electromagnetic wave emitting module faces the tire hub; The beam control module adjusts the direction of the transmitting end of the electromagnetic wave transmitting module so that the electromagnetic wave beam emitted by the electromagnetic wave transmitting module passes through the wave-transparent window of the non-metallic material embedded in the wheel hub and is transmitted to the electromagnetic wave receiving module; the electromagnetic wave receiving module is located in the tire at the position corresponding to the wave-transparent window; The electromagnetic wave receiving module is controlled to charge the tire pressure sensor based on the received electromagnetic waves.

9. A wireless charging device for a tire pressure sensor, characterized in that, include: Central processing unit, memory, input / output interface, wired or wireless network interface, power supply; The memory is either a short-term storage memory or a persistent storage memory; The central processing unit is configured to communicate with the memory and execute instructions in the memory on a control plane functional entity to perform the method of claim 8.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes instructions that, when executed on a computer, cause the computer to perform the method of claim 8.

Images