Tire valve with tire pressure display

Abstract

The invention provides a tire valve with a tire pressure display function, and relates to the technical field of tire pressure monitoring, the tire valve comprises a shell main body, a transparent shell is mounted on the outer side of the shell main body, a battery shell is arranged in the shell main body, a plurality of button battery bodies are arranged in the battery shell, a sealing ring is arranged below the battery shell, and the button battery bodies are arranged in the sealing ring. The pressure sensor and the display screen are integrated on the air tap, so that a user can check the tire pressure at any time before riding, in the inflation process or in the riding process and find the abnormal conditions of the tire pressure, such as too low or too high tire pressure in time, inflation and deflation can be achieved without disassembling the air tap, and the air tap is convenient to use. Tire burst or other potential safety hazards caused by the tire pressure problem can be effectively avoided, and the personal safety of a rider is guaranteed especially under the conditions of high-speed riding or complex road conditions.

Description

Technical Field

[0001] The invention relates to the technical field of tire pressure monitoring, and in particular to a tire valve with a tire pressure display. Background Art

[0002] As bicycles and electric vehicles become increasingly popular, tire pressure has a vital impact on riding safety and comfort. For bicycle and electric vehicle users, traditional tire pressure detection methods rely on regular visits to repair shops or manual measurements using simple mechanical tire pressure gauges.

[0003] Mountain bikes usually use Schrader valves, which are commonly referred to as Schrader valves. They are an inflatable device widely used on tires of all powered vehicles today. Road bikes usually use Presta valves, which are commonly referred to as Presta valves. They are mostly used on road bikes. This type of valve consists of a copper tube body with external threads, a capped valve screw, a valve cap, and a nut that fixes the valve to the rim.

[0004] In actual usage scenarios, bicycles and electric vehicles often face complex road conditions, including bumpy roads, different temperature environments, etc. These factors will cause changes in tire pressure. Moreover, since bicycles and electric vehicles usually do not have a complete tire pressure monitoring system like cars, it is difficult for users to detect abnormal tire pressure in time. For example, low tire pressure will increase riding resistance, cause excessive tire wear, and may even cause the risk of tire blowout during riding. Excessive tire pressure will reduce riding comfort and controllability.

[0005] Some existing small tire pressure monitoring devices either require complicated installation steps or are expensive, which are not convenient and economical for bicycle and electric vehicle users. In addition, some monitoring devices do not have an intuitive display method and need to be connected to an additional display device, which is not practical during riding. At the same time, there is currently a lack of a tire pressure monitoring solution on the market that can adapt to both the two main types of valves, Fascher and Schweizer, and can work reliably in complex riding environments. Therefore, a simple, practical and low-cost tire pressure monitoring solution specifically for bicycles and electric vehicles is needed.

[0006] Therefore, we propose a tire valve with tire pressure display. Summary of the invention

[0007] The purpose of the present invention is to solve the shortcomings existing in the prior art. Some existing small tire pressure monitoring devices either require complicated installation steps or are expensive, which are not convenient and economical for bicycle and electric vehicle users. In addition, some monitoring devices do not have an intuitive display method and need to be connected to an additional display device, which is not practical during riding. At the same time, there is currently a lack of a tire pressure monitoring solution on the market that can adapt to both the two main types of valves, Falang and Schiaver, and can work reliably in complex riding environments.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] A tire valve with tire pressure display, comprising a shell body, a transparent shell is installed on the outer side of the shell body, a battery shell is arranged inside the shell body, a plurality of button battery bodies are arranged inside the battery shell, a sealing ring is arranged below the battery shell, and a pressure sensor is installed at the bottom of the sealing ring;

[0010] A connection joint is installed at the bottom of the shell body, and a tire pressure display device is installed inside the shell body and on the right side of the battery shell. The tire pressure display device is connected to the pressure sensor through a wire, and the tire pressure display device is used to receive a signal from the pressure sensor and display it in real time;

[0011] The tire pressure display device comprises a circuit main board, buttons are installed on the circuit main board, and a display screen is provided at the connection of the circuit main board.

[0012] As a preferred solution of the present invention, the tire pressure display device also includes a signal conditioning circuit, a microcontroller and a data bus.

[0013] As a preferred solution of the present invention, the signal conditioning circuit includes an amplifier circuit and a filter circuit. The amplifier circuit adopts OP07, and the filter circuit adopts a passive filter to remove high-frequency noise and interference in the signal.

[0014] As a preferred solution of the present invention, the microcontroller adopts the STM32L4 series, and the microcontroller is used for data acquisition control, configuring the analog-to-digital conversion module, setting the acquisition frequency, accurately converting the analog signal of the pressure sensor into a digital signal, and performing data processing and calculation at the same time, and processing the pressure data according to the characteristic parameters of the pressure sensor.

[0015] As a preferred solution of the present invention, the data bus is used to send the information processed by the microcontroller to a display screen in real time, and the display screen is used to display the pressure value in the tire.

[0016] As a preferred solution of the present invention, the battery housing is used to isolate a plurality of button battery bodies from high-pressure gas and moisture in the tire.

[0017] As a preferred solution of the present invention, the material of the transparent shell is acrylic board.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] In the present invention, the pressure sensor and display screen integrated in the air nozzle can allow the user to check the tire pressure at any time before riding, during the inflation process or during riding, and promptly discover abnormal tire pressure, such as too low or too high tire pressure. Inflation and deflation can be achieved without removing the air nozzle, which can effectively avoid tire blowouts or other safety hazards caused by tire pressure problems and ensure the personal safety of riders, especially when riding at high speeds or under complex road conditions.

[0020] A display screen is directly installed on the valve, so that the tire pressure information is clear at a glance. Users do not need to carry additional tire pressure measuring tools or connect other devices to obtain tire pressure data. Whether in daily riding preparation or during a short break, the tire pressure can be easily checked. This convenient visual design greatly improves the convenience of user use.

[0021] There are two types of air valves that can display tire pressure, which can perfectly adapt to both Presta valves and Schmalz valves. Whether it is the Presta valve commonly used in road bicycles or the Schmalz valve widely used in electric vehicles and mountain bikes, you can choose freely. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the inverted structure of a tire valve with tire pressure display provided by the present invention;

[0023] Figure 2 A schematic diagram of the unfolding of a transparent housing of a tire valve with tire pressure display provided by the present invention;

[0024] Figure 3 A schematic diagram of the installation position of a circuit mainboard of a tire valve with tire pressure display provided by the present invention;

[0025] Figure 4 A schematic diagram of the front cross-sectional structure of a main body of a tire valve with tire pressure display provided by the present invention;

[0026] Figure 5 A schematic diagram of the operating principle of a tire valve with tire pressure display provided by the present invention;

[0027] Figure 6 A schematic diagram of a Schrader valve for installing a tire valve with tire pressure display provided by the present invention;

[0028] Figure 7 A schematic diagram of a tire air valve with a tire pressure display provided by the present invention being integrally installed on a bicycle.

[0029] Legend: 1. Shell body; 2. French valve core; 3. Transparent shell; 4. Circuit board; 5. Display screen; 6. Button; 7. Battery shell; 8. Button battery body; 9. Sealing ring; 10. Pressure sensor; 11. Connector; 12. Wire; 13. Signal conditioning circuit; 14. Filter circuit; 141. Amplifier circuit; 15. Microcontroller; 16. Data bus. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0031] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to related references, and several embodiments of the present invention are given. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0032] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may also be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which the present invention belongs. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0034] Example

[0035] like Figure 1-7As shown, the present invention provides a technical solution: the shell body 1 is the core supporting structure of the entire electronic tire pressure gauge, and is made of high-strength and lightweight engineering plastics. Its design fully considers the installation space and layout rationality of each internal component. The transparent shell 3 installed on the outside is made of acrylic board, which has high transparency, good weather resistance and mechanical strength. The transparency of acrylic board can ensure that the user can clearly view the content of the tire pressure display device. Its weather resistance ensures that there will be no discoloration, deformation and other problems in various complex outdoor riding environments, such as high temperature, humidity, ultraviolet radiation, etc., ensuring long-term stable visibility.

[0036] By selecting appropriate materials, the functions of protecting internal components and facilitating users to view displayed information are achieved. The transparent housing 3 uses acrylic board to utilize its physical and chemical properties to meet the needs of outdoor use.

[0037] The battery casing 7 is a sealed structure specially designed to accommodate a number of button battery bodies 8. Its interior has been finely processed and is provided with a slot that precisely matches the shape and size of the button battery to ensure that the battery can remain stable under severe vibration during riding. The battery casing 7 is made of insulating and chemically resistant materials, such as polycarbonate, which can effectively isolate the button battery body 8 from the external high-pressure gas and possible moisture in the tire, because if the button battery comes into contact with moisture, a short circuit may occur, and the high-pressure gas may cause physical damage to the battery casing 7, thereby affecting the normal operation of the entire electronic tire pressure gauge.

[0038] By utilizing the properties of insulating and corrosion-resistant materials such as polycarbonate, the battery is protected from adverse external factors and its normal power supply function is maintained.

[0039] The sealing ring 9 is located below the battery housing 7. It is a rubber material with high elasticity and aging resistance. Its function is to form a reliable sealing environment between the pressure sensor 10 and the battery housing 7 to prevent high-pressure gas, moisture or impurities in the tire from entering the battery housing 7 and other internal spaces of the electronic tire pressure gauge.

[0040] The pressure sensor 10 is installed at the bottom of the sealing ring 9. It is a high-precision, high-sensitivity MEMS (micro-electromechanical system) pressure sensor 10. The sensor's sensing diaphragm is in direct contact with the gas inside the air nozzle. When the air pressure in the tire acts on the sensing diaphragm, the diaphragm will undergo a slight deformation, causing changes in the internal electrical parameters of the sensor (such as resistance, capacitance, etc.), thereby measuring the tire pressure.

[0041] The sealing ring 9 uses the elasticity and sealing performance of rubber to achieve waterproof, air-proof and dust-proof functions. The pressure sensor 10 measures pressure by converting the deformation of the sensing diaphragm into an electrical signal based on MEMS technology.

[0042] The connection joint 11 is installed at the bottom of the housing body 1. It is the key part of the entire electronic tire pressure gauge and the air nozzle. The design of the connection joint 11 is optimized according to the different structural characteristics of the French nozzle and the Schrader nozzle. Please refer to the attached instructions for details. Figure 1 and 6 For the Prefabric nozzle, the connecting joint 11 is provided with a slender channel and a sealing structure adapted to the Prefabric nozzle, which can be tightly fitted on the Prefabric nozzle to ensure the smooth flow and sealing of the gas channel. For the American nozzle, the connecting joint 11 has a wider opening and a corresponding clamping device to firmly connect the American nozzle to prevent loosening during use. This design allows the electronic tire pressure gauge to select the corresponding connecting joint 11 according to the user's vehicle nozzle type, and it is more convenient to install on different types of air nozzles to meet the needs of different users.

[0043] By designing different connection methods according to the different structures of Favarius and Schrader valves, a stable and sealed connection between the electronic tire pressure gauge and different air nozzles can be achieved, ensuring the accuracy of tire pressure measurement.

[0044] The tire pressure display device is located inside the shell body 1 and on the right side of the battery shell 7. It is the information processing and display center of the entire electronic tire pressure gauge, including important components such as the circuit main board 4, buttons 6, display screen 5, signal conditioning circuit 13, microcontroller 15 and data bus 16.

[0045] The circuit main board 4 is used as a connection carrier for various components and is designed with a multi-layer printed circuit board (PCB). It has good electrical performance and reasonable wiring. The button 6 is installed on the circuit main board 4. The user can perform various operations through the button 6, such as turning on / off the device, switching the display unit (such as kPa and bar), setting the tire pressure alarm threshold, etc. The display screen 5 is connected to the circuit main board 4 through a sophisticated welding process. It adopts a high-contrast, low-power liquid crystal display screen 5 (LCD) or organic light-emitting diode display screen 5 (OLED) technology, which can clearly and stably display the pressure value in the tire.

[0046] The signal conditioning circuit 13 is crucial to ensure the quality of the output signal of the pressure sensor 10, wherein the amplifier circuit 141 uses an OP07 high-precision operational amplifier, which has the advantages of low noise, high gain, low offset voltage, etc. Since the analog signal output by the pressure sensor 10 is usually weak, which may be only a few millivolts to tens of millivolts, OP07 can linearly amplify these weak signals according to a preset amplification factor to meet the requirements of subsequent analog-to-digital conversion.

[0047] The filter circuit 14 adopts a passive filter, which is composed of passive components such as capacitors and inductors. By reasonably designing the parameters of the filter, high-frequency noise and interference in the signal can be effectively filtered out. For example, by selecting appropriate capacitance and inductance values, a low-pass filter with a cut-off frequency of 100 Hz is designed, which can block high-frequency noise signals higher than 100 Hz, making the conditioned signal purer and more stable, thereby improving the measurement accuracy of the entire system.

[0048] The OP07 operational amplifier uses its electrical characteristics to amplify signals, and the passive filter uses the impedance characteristics of capacitors and inductors to filters out high-frequency noise, thereby jointly improving signal quality.

[0049] The microcontroller 15 adopts the STM32L4 series, which is a low-power, high-performance 32-bit microcontroller 15. In terms of data acquisition control, it can accurately control the data acquisition frequency by configuring its own rich analog-to-digital conversion (ADC) module. For example, according to different riding scenarios and user needs, the acquisition frequency can be flexibly set between 1 and 10 times per second.

[0050] During the data acquisition process, the microcontroller 15 accurately controls

[0051] The ADC module converts the analog signal output by the pressure sensor 10 into a digital signal. For data processing and calculation, the microcontroller 15 performs complex mathematical operations on the converted digital signal based on the characteristic parameters of the pressure sensor 10, such as sensitivity, zero offset, linearity, etc.

[0052] The STM32L4 series microcontroller 15 uses its internal ADC module and powerful computing power, combined with the sensor characteristic parameters, to accurately collect and process the pressure signal.

[0053] The data bus 16 plays a key role in information transmission in the entire system. It is a high-speed communication channel between the microcontroller 15 and the display screen 5. It adopts a standard communication protocol, such as SPI (serial peripheral interface) or I2C (inter-integrated circuit bus) protocol. The data bus 16 can quickly and stably send the tire pressure information processed by the microcontroller 15 to the display screen 5 in real time. Through a strict data transmission protocol and a high-speed data transmission rate, the integrity and timeliness of the information during the transmission process are guaranteed, so that the display screen 5 can update the display content in a timely and accurate manner to provide the user with the latest tire pressure data.

[0054] The high efficiency and stability of standard communication protocols such as SPI or I2C are utilized to achieve fast data transmission between the microcontroller 15 and the display screen 5 .

[0055] In summary, during riding, especially when riding at high speed or under complex road conditions, the stability of tire pressure is crucial. When the tire pressure is too high, the contact area between the tire and the ground is reduced, resulting in a decrease in grip and the vehicle is prone to out of control. When the tire pressure is too low, the tire is excessively deformed, which will generate a lot of heat and increase the risk of tire blowout. It will also increase the resistance to riding. This electronic tire pressure gauge allows users to check the tire pressure at any time before or during riding, and detect abnormal tire pressure in time. Once it is found that the tire pressure exceeds the normal range (such as the normal tire pressure range is 2.0-2.8bar, when the tire pressure is lower than 2.0ba or higher than 2.8bar), the user can take timely measures, such as adjusting the tire pressure or checking whether the tire has air leakage, etc., thereby effectively avoiding tire blowouts or other safety hazards caused by tire pressure problems and ensuring the personal safety of riders.

[0056] After the user installs the button battery, the electronic tire pressure gauge starts working. The microcontroller 15 first performs initialization operations, including the settings of its own internal registers, clock sources, and peripheral interfaces (such as ADC, SPI, I2C, etc.), and initializes various hardware components such as the pressure sensor 10 and the display screen 5. For example, an initialization command is sent to the pressure sensor 10 to obtain the initial state and calibration parameters of the sensor, and the display screen 5 is initialized, including the display mode, brightness, etc.

[0057] During riding, the air pressure in the tire acts on the sensing diaphragm of the pressure sensor 10, and the pressure sensor 10 outputs a corresponding analog electrical signal according to the air pressure. The analog signal first enters the signal conditioning circuit 13. In the signal conditioning circuit 13, the OP07 amplifier circuit 141 amplifies the weak sensor signal according to a preset amplification factor, and then filters out high-frequency noise and interference through a passive filter to obtain a clean and stable analog signal. The conditioned analog signal is sent to the ADC port of the microcontroller 15, and the microcontroller 15 converts the analog signal into a digital value through the ADC according to the set data acquisition frequency (such as 5 times per second).

[0058] After receiving the digital value converted by ADC, the microcontroller 15 calibrates and calculates the digital value according to the characteristic parameters of the pressure sensor 10 (such as sensitivity, zero offset, linearity, etc.). If the sensor has a temperature compensation function, the microcontroller 15 will also obtain temperature data and perform compensation calculation on the pressure value based on the temperature. The calculated tire pressure value is converted to the unit (such as converted to commonly used bar or psi) and stored in the memory of the microcontroller 15.

[0059] The microcontroller 15 sends the processed tire pressure value to the display screen 5 through the data bus 16 (such as SPI or I2C), and the display screen 5 driver chip updates the display content according to the received data, and displays the tire pressure value in a clear and intuitive manner on the display screen 5. The user can directly see the tire pressure information on the display screen 5 through the transparent housing 3.

[0060] If the user presses the button 6 on the circuit main board 4, some interactive functions can be realized, such as switching the tire pressure display unit, setting the tire pressure alarm threshold, etc. When the tire pressure value exceeds the alarm threshold set by the user, the display screen 5 can remind the user to pay attention to abnormal tire pressure by flashing or displaying special symbols.

[0061] The electronic tire pressure gauge continues the above steps, monitoring tire pressure changes in real time, providing users with timely and accurate tire pressure information to ensure riding safety and comfort.

[0062] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tire valve with tire pressure display, comprising a housing body (1), characterized in that: A transparent shell (3) is installed on the outer side of the shell body (1), a battery shell (7) is provided inside the shell body (1), a plurality of button battery bodies (8) are provided inside the battery shell (7), a sealing ring (9) is provided below the battery shell (7), and a pressure sensor (10) is installed at the bottom of the sealing ring (9); A connection joint (11) is installed at the bottom of the housing body (1), and a tire pressure display device is installed inside the housing body (1) and on the right side of the battery housing (7). The tire pressure display device is connected to the pressure sensor (10) via a wire (12), and the tire pressure display device is used to receive a signal from the pressure sensor (10) and display it in real time; The tire pressure display device comprises a circuit main board (4), a button (6) is mounted on the circuit main board (4), and a display screen (5) is provided at the connection of the circuit main board (4).

2. A tire valve with tire pressure display according to claim 1, characterized in that: The tire pressure display device also includes a signal conditioning circuit (13), a microcontroller (15) and a data bus (16).

3. A tire valve with tire pressure display according to claim 2, characterized in that: The signal conditioning circuit (13) comprises an amplifier circuit (141) and a filter circuit (14); the amplifier circuit (141) adopts OP07, and the filter circuit (14) adopts a passive filter to remove high-frequency noise and interference in the signal.

4. A tire valve with tire pressure display according to claim 3, characterized in that: The microcontroller (15) adopts the STM32L4 series. The microcontroller (15) is used for data acquisition control, configures an analog-to-digital conversion module, sets an acquisition frequency, accurately converts an analog signal of the pressure sensor (10) into a digital signal, performs data processing and calculation at the same time, and processes pressure data according to characteristic parameters of the pressure sensor (10).

5. A tire valve with tire pressure display according to claim 4, characterized in that: The data bus (16) is used to send the information processed by the microcontroller (15) to the display screen (5) in real time, and the display screen (5) is used to display the pressure value in the tire.

6. The tire valve with tire pressure display according to claim 1, characterized in that: The battery casing (7) is used to isolate a plurality of button battery bodies (8) from high-pressure gas and moisture in the tire.

7. The tire valve with tire pressure display according to claim 1, characterized in that: The transparent shell (3) is made of acrylic board.

Images