Wheel alignment angle detection device, wheel alignment angle detection warning system, and wheel alignment angle detection warning method

Abstract

To provide a wheel alignment angle detection type rim cover device, a wheel alignment angle detection warning system and a wheel alignment angle detection warning method.SOLUTION: A wheel alignment angle detection type rim cover device removably placed on a rim includes a base material and a sensor module. The base material is removably placed on the rim; and the sensor module is placed on the base material, generates a plurality of measurement data, and is used for calculating inclination data of a tire with respect to at least one reference axis. A wheel alignment angle detection warning system is configured to: compare the inclination data with a standard value; and when a difference between the inclination data and the standard value is beyond an acceptable range, issues a warning.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to the field of wheel alignment angle detection equipment, and more particularly to a sensor module for detecting the tilt angle of a tire. wheel Wheel alignment angle checker located in Appearance The present invention relates to a wheel alignment angle detection and warning system and a wheel alignment angle detection and warning method. [Background technology]

[0002] The tires of a vehicle are attached to the vehicle body, and when the vehicle is running, the wheels rotate around the axles to move the vehicle forward or backward in tandem. Since a rotating dynamic structure is formed between the tires of the vehicle and the vehicle body, the balance between the tires and the vehicle body structure not only affects the safety of driving, but also has a direct impact on the service life of the vehicle.

[0003] The traditional tire installation process for vehicles involves wheel After the tire structure is formed, the balance of the tire structure is measured and then the tire structure is wheel The tire structure itself is rotated by adding weights to appropriate positions to achieve dynamic balance. After the tire structure is coupled to the axle, the tire structure adjusts the friction coefficient and the direction of action between the tire and the ground to improve the stability of the vehicle when it is running, and usually the inclination angles of the tire structure are appropriately adjusted, i.e., the so-called wheel alignment. This allows the load on the suspension and steering system of the vehicle to conform to the standard set at the factory, reduces wear on the suspension and steering system, and at the same time maintains a balanced state when the vehicle is running, improving driving safety and comfort. Summary of the Invention [Problem to be solved by the invention]

[0004] However, in conventional wheel alignment, the driver must have the wheel alignment done at a specific repair shop, so the driver has no way of knowing if the tire inclination angle has changed while driving the vehicle under normal circumstances. The driver must only bring the vehicle to a repair shop when the vehicle experiences abnormalities such as shaking or noise, which often results in problems with driving safety. In addition, if the tire inclination angle is inappropriate, wear and tear on the suspension and steering system increases. For this reason, it was important to immediately detect the condition of the tires and sound an alarm to the driver.

[0005] In conventional patent documents, for example, Patent Document 1 (Taiwan Patent Application Publication No. 771173B) discloses that "a tire pressure detection chip is attached to a tire to instantly detect the tire pressure and issue a warning to the driver." However, although Patent Document 1 (Taiwan Patent Application Publication No. 771173B) discloses that tire pressure is detected, it does not disclose a method for detecting the tire tilt angle of a vehicle to resolve the problem. Patent Document 2 (Taiwan Patent Application Publication No. 774424B) discloses a "method for detecting tire speed and determining whether the wheel should be the left wheel or the right wheel," but similarly does not disclose a method for detecting the tire tilt angle of a vehicle to resolve the problem. Furthermore, this tire pressure detection chip is attached to the tire, wheel However, in order to attach or remove such a detection device, the device must be taken to a repair shop, and users cannot purchase and install it themselves, making it difficult for this type of technology to become widespread.

[0006] Therefore, the present inventors believed that the above-mentioned drawbacks could be improved, and as a result of extensive research, they came to propose the present invention, which effectively improves the above-mentioned problems through rational design.

[0007] The present invention has been made by the inventors through intensive research in consideration of the above problems, and its object is to provide a wheel alignment angle detector. AppearanceThe present invention provides a wheel alignment angle detection and warning system and a wheel alignment angle detection and warning method, which includes an accelerometer and a gyroscope sensor module. wheel After installation in the cover device, wheel With cover device wheel The present invention obtains multiple inclination angles of the tire structure from the measurement data of the sensor module, and issues an alarm after comparing the multiple inclination angles with a standard inclination angle. [Means for solving the problem]

[0008] According to one embodiment of the present invention, a wheel alignment angle inspection Appearance This wheel alignment angle checker is provided. Appearance Place wheel It is removably installed in wheel has an outer surface and an axial end surface; wheel The outer surface of the wheel is connected to the tire to form a tire structure, and the axial end surface is rotatably connected to the axle. Appearance One embodiment of the device includes a substrate and a sensor module. wheel The sensor module is mounted on the substrate and generates at least one measurement data for calculating tilt angle data of the tire relative to at least one reference axis. wheel A cover of the above-mentioned wheel The sensor module is adapted to be mounted in a center hole of the vehicle, and the sensor module includes at least one sensor which is an accelerometer of a MEMS device.

[0009] In a preferred embodiment of the present invention, the sensor module is disposed on a surface of the base material facing the center hole.

[0010] In a preferred embodiment of the present invention, the sensor module is located within the center hole.

[0011] In a preferred embodiment of the present invention, the substrate has a bottom wall and an outer peripheral wall connected to the bottom wall, the bottom wall and the outer peripheral wall form an accommodation space, the sensor module is installed on the bottom wall and located in the accommodation space, and the outer peripheral wall is provided with an engagement structure for engaging with the center hole.

[0012] In a preferred embodiment of the present invention, the sensor module further comprises a circuit board, and the accelerometer is mounted on the circuit board.

[0013] In a preferred embodiment of the invention, the at least one measurement data is a plurality of measurement data, the measurement data being such that the accelerometer measures a quantity of gravitational acceleration along a first measurement axis, a second measurement axis and a third measurement axis, the first measurement axis being the wheel The second measurement axis and the third measurement axis are perpendicular to the axial end surface of the wheel and perpendicular to the first measurement axis, and the second measurement axis and the third measurement axis are perpendicular to each other.

[0014] In a preferred embodiment of the present invention, the sensor module further comprises a processor and a wireless transceiver unit mounted on the circuit board, the sensor and the wireless transceiver unit are electrically connected to the processor, and the measurement data are transmitted to the processor for calculation by the processor or transmitted by the processor via the wireless transceiver unit.

[0015] In a preferred embodiment of the invention, the processor comprises a calculation unit for receiving the measurement data and calculating the tilt angle data based on an algorithm.

[0016] In a preferred embodiment of the present invention, the sensor module further comprises a power supply unit connected to the processor, the power supply unit supplying power to the sensor module.

[0017] In a preferred embodiment of the present invention, the first measurement axis of the sensor is wheel The axial end surface of the shaft is perpendicular to the axial end surface of the shaft.

[0018] In a preferred embodiment of the present invention, the first measurement axis is wheel The center of the cover and / or wheel The center hole is located on the central axis of the center hole.

[0019] In a preferred embodiment of the present invention, the first measurement axis is wheel The center hole is overlapped with the central axis of the center hole.

[0020] According to one embodiment of the present invention, there is provided a wheel alignment angle detection warning system, which includes at least one of the above-mentioned wheel alignment angle detection devices. Appearance The wheel alignment angle detector includes a wheel alignment angle detector, at least one tire structure, a central processing unit, and an alarm unit. The at least one tire structure includes the wheel alignment angle detector. Appearance A central processing unit receives the measurement data and calculates the tilt angle data, or receives the tilt angle data and compares the tilt angle data with a number of standard values, and if the tilt angle data deviates from a predetermined range of the standard values, the central processing unit generates a control signal. An alarm unit is connected to the central processing unit and receives the control signal and issues an alarm.

[0021] In a preferred embodiment of the invention, the central processing unit is located in an on-board computer of the vehicle or in a mobile device.

[0022] In a preferred embodiment of the present invention, the wheel alignment angle detection and warning system includes: Appearance The tire further comprises at least one tire structure on which the tire support is disposed.

[0023] In a preferred embodiment of the present invention, the wheel alignment angle detection and warning system further comprises a display device, the tilt angle data is displayed on the display device, and the display device serves as the warning unit for displaying a warning message.

[0024] In a preferred embodiment of the present invention, the warning unit is a signal indicator lamp mounted on the dashboard of the vehicle.

[0025] According to an embodiment of the present invention, a wheel alignment angle detection warning method is provided, the wheel alignment angle detection warning method includes the following steps: Appearance Place the vehicle tire structure wheel The present invention relates to a tire sensor module and a tire control system, comprising: an installation step of installing the sensor module on a vehicle; a communication pairing step of pairing the sensor module with a device having a central processing unit to form a communication connection; a measurement step of generating at least one measurement data by the sensor module; a calculation step of calculating inclination angle data of the tire relative to at least one reference axis from the measurement data by an algorithm; and a comparison / alarm step of the central processing unit comparing the inclination angle data with a standard value and issuing an alarm if the inclination angle data deviates from a predetermined range of the standard value.

[0026] In a preferred embodiment of the present invention, the wheel alignment angle detection and warning method includes: Appearance The method further includes a step of mounting the tire structure having the tilt angle data on a vehicle and performing a four-wheel alignment process to obtain the standard value of the tilt angle data.

[0027] In a preferred embodiment of the present invention, the at least one measurement data in the calculation step is a plurality of measurement data, and a plurality of inclination angle data of the tire structure with respect to a first reference axis, a second reference axis, and a third reference axis are calculated from the measurement data, the first reference axis is defined as an axial direction parallel to the axle and perpendicular to the direction of gravity, the second reference axis is defined as an axial direction perpendicular to the first reference axis and perpendicular to the direction of gravity, and the third reference axis is defined as an axial direction parallel to the direction of gravity.

[0028] Wheel alignment angle inspection of the present invention Appearance Place wheel By installing it removably, users can purchase it themselves after wheel The tire is fitted to the vehicle and detects each inclination angle of the tire structure when the vehicle comes to a stop while moving (when the vehicle is stopped at a red light) or while the vehicle is moving, for example, detecting the camber angle (the angle between the wheel center line and the vertical line) and other angles, and then issuing an alarm after comparing each inclination angle with the standard value range. [Brief description of the drawings]

[0029] [Figure 1] 1 is a schematic diagram showing a wheel alignment angle detection device according to an embodiment of the present invention installed on a wheel. [Diagram 2] 1 is an exploded view showing a wheel alignment angle detection device according to an embodiment of the present invention installed on a wheel. [Diagram 3] 1 is a cross-sectional view showing a wheel alignment angle detection device according to an embodiment of the present invention installed on a wheel. [Figure 4] 1 is a block diagram showing a wheel alignment angle detection device according to an embodiment of the present invention. [Diagram 5] FIG. 2 is a schematic diagram of a tire configuration generating a camber angle. [Figure 6A] FIG. 2 is a schematic diagram showing a tire configuration that does not generate a tilt angle with respect to a first reference axis (X-axis). [Figure 6B] FIG. 2 is a schematic diagram showing a tire configuration in which a tilt angle (camber angle) is generated on a first reference axis (X-axis). [Figure 7A] FIG. 13 is a schematic diagram showing a tire configuration that does not generate a tilt angle with respect to a third reference axis (Z-axis). [Figure 7B] FIG. 13 is a schematic diagram showing a tire configuration in which a tilt angle (camber angle) is generated on a third reference axis (Z axis). [Figure 8] 2 is a schematic diagram showing the first measurement axis, the second measurement axis, the third measurement axis, the horizontal line and the gravity direction of a sensor module of a wheel alignment angle detection device according to one embodiment of the present invention. FIG. [Figure 9] 4 is a flowchart illustrating a wheel alignment angle detection and warning method according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0030] The present invention will be described below through embodiments of the invention, but the following embodiments do not limit the scope of the invention according to the claims. Furthermore, not all of the combinations of features described in the embodiments are necessarily essential to the solution of the invention.

[0031] In addition, the abstract and the title of the invention are merely used to aid in searching patent documents, and do not limit the scope of the invention. In addition, the terms "first", "second", etc. described in the specification or claims are merely used to name elements or to distinguish different embodiments or scopes, and do not limit the upper or lower limits of the quantity of elements.

[0032] First, referring to Figs. 1 to 4, a wheel alignment angle inspection apparatus according to an embodiment of the present invention will be described. Appearance The wheel alignment angle detector of this embodiment will be described in more detail. Appearance Position 100 is the vehicle wheel Installed in R, wheel R is mounted on the axle F (see Figure 5). wheel R has an outer surface and an axial end surface R1, wheelThe outer surface of the tire W is connected to the tire structure T, and the axial end surface R1 is rotatably connected to the axle. Appearance The device 100 includes a substrate 10 and a sensor module 20. The sensor module 20 is mounted on the substrate 10. wheel The substrate 10 in this embodiment is removably mounted on the substrate R. wheel It is a cover, wheel The sensor module is installed on the surface of the substrate 10 facing the center hole R2. wheel When installed on R, the sensor module is located within center hole R2.

[0033] In this embodiment, the substrate 10 includes a bottom wall 11 and an outer wall 12. The outer wall 12 is connected to the bottom wall 11 to form an accommodation space S. The sensor module 20 is installed on the bottom wall 11 and located in the accommodation space S. The outer wall 12 is provided with an engagement structure 13 for engaging with the center hole R2. A cover 14 is installed on the upper end of the outer wall 12, which seals the accommodation space S. A seal member 15 is installed at the joint between the cover 14 and the outer wall 12 to prevent moisture and dust from entering the accommodation space S and prevent the sensor module 20 from corroding or being damaged. In this embodiment, the engagement structure 13 is an engagement bump that is engaged with the engagement hole R3 of the center hole R2, and the seal member 15 is an O-ring. In another embodiment, the sensor module 20 itself includes a sealed case body, and the electronic elements are sealed in the sealed case body to prevent external moisture, dust, etc. from entering the sensor module 20 and causing corrosion or damage during the running of the vehicle.

[0034] The sensor module 20 includes a circuit board 21, a plurality of sensors 22, a processor 23, a wireless transceiver unit 24, a power supply unit 25, and a storage unit 26. The sensor 22, the processor 23, the wireless transceiver unit 24, the power supply unit 25, and the storage unit 26 are mounted on the circuit board 21, and the plurality of sensors 22 are equipped with MEMS accelerometers and gyroscopes, and the accelerometers are also called acceleration sensors. The accelerometers are gravitational accelerometers, and the detected gravitational acceleration is measured as the amount of three measurement axes, that is, a three-axis accelerometer. The measured data is transmitted to the processor 23 equipped with a calculation unit, and the calculation unit calculates the measured data based on a predetermined algorithm, and then obtains the tilt angle data. The obtained tilt angle data is transmitted to the vehicle's on-board computer or the driver's mobile device by the wireless transceiver unit 24. The power supply unit 25 supplies power for use by the sensor module 20, and the storage unit 26 stores firmware required for the processor 23 to calculate or transmit data. The power supply unit 25 may be a button battery or a rechargeable lithium battery. In another embodiment, after the measurement data is transmitted to the processor 23, the processor 23 itself does not perform any calculation, but transmits the measurement data to the vehicle's on-board computer or the driver's mobile device via the wireless transceiver unit 24, and the on-board computer or the mobile device calculates the tilt angle data according to a predetermined algorithm. The sensor module 20 further includes a USB 27, which updates the firmware of the sensor module 20 and the charging and discharging of the power supply unit 25 (when the power supply unit 25 is a rechargeable secondary battery such as a lithium battery).

[0035] The wheel alignment angle detection and warning system of the present invention is used in a vehicle, and includes the four above-mentioned wheel alignment angle detection Appearance The tire alignment system includes a wheel alignment angle detector 100, four tire structures T, a central processing unit 200, and an alarm unit 300. Each tire structure T is provided with one wheel alignment angle detector for detecting the inclination angle of each tire structure T. AppearanceThe sensor module 20 is provided with a sensor device 100. The central processing unit 200 receives the measurement data and calculates the tilt angle data, or the processor 23 of the sensor module 20 calculates the tilt angle data and then transmits the tilt angle data to the central processing unit 200. The central processing unit 200 compares the tilt angle data with a number of standard values, and if the tilt angle data deviates from a predetermined range of standard values, the central processing unit 200 generates and sends a control signal to the alarm unit 300. The alarm unit 300 is connected to the central processing unit 200, and issues an alarm after the alarm unit 300 receives the control signal.

[0036] Referring to FIG. 2, the central processing unit 200 may be a central processor of the driver's mobile device M, and the warning unit 300 may be a display device of the mobile device M. The mobile device M is mounted to perform wheel alignment angle inspection. Appearance After the application step of the device 100, the tilt angle data of each tire structure T is instantly displayed on the display device of the mobile device M, and if the tilt angle data deviates from a predetermined range of standard values, a warning is issued on the display device. In another embodiment, the central processing unit 200 can be a central processor of an on-board computer of a vehicle, and the warning unit 300 can be a display device of a central control panel of a vehicle or a signal indicator lamp installed on the dashboard.

[0037] As shown in Figures 5, 6A, 6B, 7A, 7B and 8, after the accelerometers and gyroscopes of the sensors 22 of the sensor module 20 are mounted on the tire structure T, the accelerometers and gyroscopes measure acceleration and angular velocity with respect to three measurement axes of the mounted tire structure T. As shown in Figure 8, the three measurement axes of the three-axis accelerometer are a first measurement axis x, a second measurement axis y, and a third measurement axis z, respectively, and the first measurement axis x is wheel The first measurement axis x is preferably perpendicular to the axial end face R1 of R. wheel The center of the cover and / or wheel The second measurement axis y and the third measurement axis z are located on the central axis of the center hole R2 of R. wheel The first measurement axis x is parallel to the axial end face R1 of R and perpendicular to the first measurement axis x, and the second measurement axis y and the third measurement axis z are perpendicular to each other. When mounted, the first measurement axis x, the second measurement axis y and the third measurement axis z respectively correspond to the first reference axis X, the second reference axis Y and the third reference axis Z described below. Preferably, when mounted, the first measurement axis x, the second measurement axis y and the third measurement axis z are parallel to the first reference axis X, the second reference axis Y and the third reference axis Z respectively described below.

[0038] The inclination angle data of the tire structure T is measured based on three reference axes, namely, a plurality of inclination angle data of the first reference axis X, the second reference axis Y and the third reference axis Z. The first reference axis X is defined as an axial direction parallel to the axle F and perpendicular to the direction of gravity G, and the first reference axis X in this embodiment is the extension direction of the axle F. The second reference axis Y is defined as an axial direction perpendicular to the first reference axis and perpendicular to the direction of gravity G, and the second reference axis Y in this embodiment is the running direction or the length direction of the vehicle. The third reference axis Z is defined as an axial direction parallel to the direction of gravity G, that is, the third reference axis Z is a vertical direction. Therefore, the inclination angle (or included angle) of the tire structure T with respect to the first reference axis X or the third reference axis Z is the aforementioned camber angle (see the embodiments in FIG. 5, FIG. 6A, FIG. 6B, FIG. 7A, FIG. 7B and FIG. 8).

[0039] For example, FIG. 5 is a schematic diagram of a tire configuration that generates a camber angle. FIG. 6A is a schematic diagram of a tire configuration that does not generate a tilt angle on the first reference axis (X-axis). FIG. 6B is a schematic diagram of a tire configuration that generates a tilt angle (camber angle) on the first reference axis (X-axis). When the tire structure T generates a tilt angle θ1 with respect to the first reference axis X, that is, when the above-mentioned camber angle (camber) is generated, the first measurement axis x and the first reference axis X of the accelerometer of the sensor 22 also generate an included angle that is the same as the tilt angle θ1. In this situation, the accelerometer measures a component gx of the gravitational acceleration g on the first measurement axis x, and then, based on gx=g·sin(θ1), the component gx on the first measurement axis x measured by the accelerometer is equal to the product of the gravitational acceleration g and the sine value of the tilt angle θ1, and the angle of the tilt angle θ1 is calculated, that is, the angle of the camber angle is calculated.

[0040] Similarly, FIG. 7A is a schematic diagram of a tire configuration that does not generate a tilt angle on the third reference axis (Z axis). FIG. 7B is a schematic diagram of a tire configuration that generates a tilt angle (camber angle) on the third reference axis (Z axis). When the tire structure T generates a tilt angle θ2 with respect to the third reference axis Z, i.e., when the above-mentioned camber angle (camber) is generated, the third measurement axis z of the accelerometer of the sensor 22 and the third reference axis Z also generate an included angle that is the same as the tilt angle θ2. In this situation, the accelerometer measures a component gz of the gravitational acceleration g on the third measurement axis z, and then, based on gz=g·sin(θ2), the component gz on the third measurement axis z measured by the accelerometer is equal to the product of the gravitational acceleration g and the cosine value of the tilt angle θ2, and the angle of the tilt angle θ2 is calculated, i.e., the angle of the camber angle is calculated.

[0041] Thus, the sensor module 20 includes a circuit board 21, at least one sensor 22, a processor 23, a wireless transceiver unit 24, a power supply unit 25, and a memory unit 26. The at least one sensor 22 measures a component gx of the gravitational acceleration g on a first measurement axis x, and / or the at least one sensor 22 measures a component gz of the gravitational acceleration g on a third measurement axis z. When mounted, the first measurement axis x and the third measurement axis z correspond to the first reference axis X and the third reference axis Z, respectively. Preferably, when mounted, the first measurement axis x and the third measurement axis z are parallel to the first reference axis X and the third reference axis Z, respectively. Incidentally, when mounted, the first measurement axis x of the at least one sensor 22 is wheel The first measurement axis x is perpendicular to the axial end face R1 of R. wheel The center of the cover and / or wheel The first measurement axis x is preferably set on the central axis of the center hole R2 of R. wheel The third measurement axis z is superimposed on the central axis of the center hole R2 of R, so that the camber angle can be measured even when the vehicle is moving and not stationary. wheel The third measurement axis z may be perpendicular to the central axis of the center hole R2 of R, and parallel to the third reference axis Z.

[0042] As shown in Figure 8, the aforementioned three-axis accelerometer can also be used to detect other angles of the tire structure. In the example of Figure 8, the horizontal line direction corresponds to the direction of the first reference axis X, and therefore the accelerometer measures the components of the gravitational acceleration g on the first measurement axis x, the second measurement axis y, and the third measurement axis z, which are gx, gy, and gz, respectively. The included angle between the component gx and the direction of gravity G is the included angle α, the included angle between the component gy and the direction of gravity G is the included angle β, and the included angle between the component gz and the direction of gravity G is the included angle γ. The component gx measured by the accelerometer on the first measurement axis x is equal to the product of the gravitational acceleration g and the cosine value of the included angle α, and the included angle α can be calculated from gx=g·cos(α). The quantity gy measured by the accelerometer on the second measurement axis y is equal to the product of the acceleration of gravity g and the cosine of the included angle β, so the angle β can be calculated from gy = g·cos(β). The quantity gz measured by the accelerometer on the third measurement axis z is equal to the product of the acceleration of gravity g and the cosine of the included angle γ, so the angle γ can be calculated from gz = g·cos(γ).

[0043] Thus, the accelerometer obtains a plurality of inclination angle data and other angle data of the tire structure T. Also, the gyroscope measures the angular velocity of the tire structure T with respect to the first measurement axis x, the second measurement axis y and the third measurement axis z to assist in the judgment during the calculation of each inclination angle data and to correct each inclination angle data.

[0044] FIG. 9 is a flowchart showing a wheel alignment angle detection and warning method according to an embodiment of the present invention.

[0045] As shown in FIG. 9, step S1 is an installation step. In step S1, a wheel alignment angle detector equipped with a sensor module is installed. Appearance Place wheel After mounting the tire wheel Then, the process proceeds to step S2.

[0046] Step S2 is a communication pairing step, in which the sensor module is paired with a device having a central processing unit to form a communication connection, for example, the sensor module is equipped with a wireless transceiver unit, and the wireless transceiver unit uses a Bluetooth chip, and a communication connection is formed after the sensor module is paired with the driver's mobile device or the vehicle's on-board computer. Then, proceed to step S3.

[0047] Step S3 is a correction step, and in step S3, the wheel alignment angle detection Appearance The tire structure with the inclination angle sensor is mounted on a vehicle, and a four-wheel alignment process is performed to obtain a standard value of the inclination angle data. For example, a maintenance shop that performs a vehicle four-wheel alignment performs the wheel alignment angle inspection. Appearance After the tire structure with the sensor module is mounted on the vehicle, a four-wheel alignment is performed on the vehicle according to a standard process, and after the alignment is completed, each tilt angle data of the tire structure measured by the sensor module is taken as a standard value. This standard value is stored in the driver's mobile device or the vehicle's on-board computer and used as a basis for comparison. Then, proceed to step S4.

[0048] Step S4 is a measurement step, in which the sensor module generates at least one or more measurement data. When the vehicle is stopped (stopping the vehicle due to a red light) or the sensor module continuously generates measurement data while the vehicle is moving, the measurement data are the acceleration values ​​of the above-mentioned three measurement axes. Then, proceed to step S5.

[0049] Step S5 is a calculation step, in which the inclination angle data of the tire with respect to at least one reference axis is calculated from the measurement data by an algorithm, which is calculated by the processor of the sensor module or by the central processing unit. Then, the process proceeds to step S6.

[0050] Step S6 is a comparison and warning step, in which the central processing unit compares the tilt angle data with standard values ​​and issues a warning if the tilt angle data deviates from a predetermined range of the standard values.

[0051] Wheel alignment angle inspection of the present invention Appearance Place wheel It is installed removably in the wheel The tire is mounted on a vehicle and detects each inclination angle of the tire structure while the vehicle is running, for example, detecting the camber angle (the angle between the wheel center line and the vertical line) and other angles, and then issues an alarm after comparing each inclination angle and / or other angles with a range of standard values.

[0052] The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope of the claims. Embodiments obtained by appropriately combining the technical means disclosed in different embodiments are also included in the technical scope of the present invention. [Explanation of symbols]

[0053] 10 Base material 11 Bottom wall 12 Peripheral wall 13 Engagement configuration 14 Cover 15 Sealing material 20 Sensor Module 21 Circuit Board 22 Sensors 23 Processors 24 Radio Transmitting and Receiving Unit 25 Power supply unit 26 Storage Unit 27 USB 100 Wheel alignment angle inspection Appearance Place 200 Central Processing Unit 300 Alarm Unit Front axle G gravity direction M Mobile Device R wheel R1 Axial end face R2 センターホール R3 fastening hole S Containment Space T タイヤ structure W タイヤ x 1st measuring axis y Second measuring axis z 3rd measuring axis X 1st reference axis Y Second reference axis Z 3rd reference axis α Angle β Angle

Prior technical literature

Chartered Documents

[0054] [Patent Document 1] Taiwan Patent Application Publication No. 771173B [Patent Document 2] Taiwan Patent Application Publication No. 774424B

Claims

1. A wheel alignment angle detection device removably installed on a wheel, the wheel having an outer surface and an axial end surface (R1), the outer surface of the wheel being coupled to a tire (W) to form a tire structure (T), and the axial end surface (R1) being rotatably coupled to an axle (F), A base material (10) which is a cover for the wheel and is removably installed in a center hole (R2) of the wheel; a sensor module (20) mounted on said substrate (10) and generating at least one measurement data for calculating tilt angle data of said tire structure (T) relative to at least one reference axis, The sensor module (20) includes at least one sensor (22) that is a MEMS device accelerometer; The sensor module (20) is installed on a surface of the substrate (10) facing a bottom surface of the center hole (R2), The sensor module (20) is located in the center hole (R2), The substrate (10) has a bottom wall (11) and an outer peripheral wall (12) connected to the bottom wall (11), The bottom wall (11) and the outer peripheral wall (12) form a storage space (S), The sensor module (20) is installed on the bottom wall (11) and is located in the storage space (S); The outer peripheral wall (12) is provided with an engagement structure (13) for engaging with the center hole (R2), A cover (14) is provided on the upper end of the outer peripheral wall (12), A seal member (15) for sealing the storage space (S) is provided at a joint between the cover (14) and the outer peripheral wall (12), The sensor module (20) further comprises a circuit board (21); The accelerometer is mounted on the circuit board (21); the at least one measurement data is a plurality of measurement data; the plurality of measurement data includes the accelerometer measuring a quantity of gravitational acceleration along a first measurement axis (x), a second measurement axis (y), and a third measurement axis (z); the first measuring axis (x) is perpendicular to the axial end face (R1) of the wheel; the second measurement axis (y) and the third measurement axis (z) are parallel to the axial end face (R1) of the wheel and perpendicular to the first measurement axis (x); the second measurement axis (y) and the third measurement axis (z) are perpendicular to each other; The sensor module (20) further includes a power supply unit (25); The power supply unit (25) is a button battery or a rechargeable lithium battery; The power supply unit (25) supplies power to the sensor module (20); A wheel alignment angle detection device characterized in that the first measurement axis (x) overlaps with the central axis of the center hole (R2) of the wheel.

2. The wheel alignment angle detection device of claim 1, characterized in that the sensor module (20) further comprises a processor (23) and a wireless transceiver unit (24) installed on the circuit board (21), the sensor (22) and the wireless transceiver unit (24) are electrically connected to the processor (23), and the measurement data is transmitted to the processor (23), where it is calculated by the processor (23) or transmitted by the processor (23) via the wireless transceiver unit (24).

3. 3. The wheel alignment angle detection device according to claim 2, characterized in that the processor (23) comprises a calculation unit for receiving the measurement data and calculating the tilt angle data based on an algorithm.

4. 4. The wheel alignment angle detection device according to claim 3, wherein the power supply unit (25) is connected to the processor (23).

5. At least one wheel alignment angle detection device (100) according to any one of claims 1 to 4; a central processing unit (200) for receiving the measurement data and calculating the tilt angle data, or for receiving the tilt angle data and comparing the tilt angle data with a standard value, and for generating a control signal if the tilt angle data is outside a predetermined range of the standard value; and an alarm unit (300) connected to the central processing unit (200) for receiving the control signal and for issuing an alarm.

6. The wheel alignment angle detection and warning system as claimed in claim 5, characterized in that the central processing unit (200) is installed in an on-board computer of a vehicle or in a mobile device (M).

7. The wheel alignment angle detection and warning system as claimed in claim 5, further comprising a display device for displaying said tilt angle data, said display device being said warning unit for displaying a warning message.

8. 6. The wheel alignment angle detection and warning system as claimed in claim 5, wherein the warning unit is a signal indicator lamp installed on a dashboard of a vehicle.

9. A wheel alignment angle detection and warning method realized by using the wheel alignment angle detection device according to claim 1, comprising: A mounting step (S1) is used to install a wheel alignment angle detection device having a sensor module and a base material on a wheel of a tire structure (T) of a vehicle, and to install the sensor module on the base material which is a cover of the wheel, and to install the sensor module on a center hole of the wheel; a communication pairing step (S2) of pairing the sensor module with a device having a central processing unit to form a communication connection; a measuring step (S4) in which the sensor module generates at least one measurement data; a calculation step (S5) of calculating, from the measurement data by an algorithm, inclination angle data of the tire with respect to at least one reference axis; and a comparison warning step (S6) in which the central processing unit compares the inclination angle data with a standard value and issues a warning if the inclination angle data deviates from a predetermined range of the standard value.

10. The wheel alignment angle detection and warning method as claimed in claim 9, further comprising a correction step (S3) of mounting the tire structure (T) with the wheel alignment angle detection device on the vehicle, and performing a four-wheel positioning process to obtain the standard value of the inclination angle data.

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