Wireless telemetering device for wheel torque measurement

Abstract

The invention discloses a wireless telemetering device for wheel torque measurement, which comprises a first wheel and a second wheel, the second wheel is positioned on one side of the first wheel and is connected with the first wheel, and the first wheel and the second wheel have the same structure and are arranged at the shaft end of a drive axle side by side; tyres are installed on the peripheries of rims of the first wheel and the second wheel respectively, the tires make contact with the ground so as to bear the weight of the whole vehicle and increase the adhesive force between the tires and the ground, and a plurality of strain gauges are installed at the same positions of spokes of the first wheel and the second wheel respectively. According to the invention, wireless transmission and measurement of the rotation signal of the wheel torque sensor can be realized on the premise of not influencing the normal operation of the wheel, the structure is simple, the installation space is saved, the cost is low, the rotation torque of the wheel can be measured in real time, and the obtained torque signal can provide technical support for the energy management of the whole vehicle and the fatigue performance analysis of the wheel.

Description

Technical Field

[0001] This invention belongs to the field of wheel torque measurement technology, and specifically relates to a wireless telemetry device for wheel torque measurement. Background Technology

[0002] Wheels typically consist of a hub, rim, and spokes, and are mounted on the axle via bearings, enabling them to rotate relative to the vehicle body. Their function is to transmit traction and braking torque, ensuring good adhesion between the wheel and the road surface, thus providing the vehicle with driving and braking forces for normal operation. As a rotating component between the tire and the axle, the torque received by the wheel from the axle directly determines the vehicle's driving capability. Currently, for rotating components like wheels, wheel torque sensors can be fabricated by attaching strain gauges to the spokes and then calibrating the correspondence between the applied torque and the electrical signal on a test bench. For example, a flywheel torque sensor disclosed in patent application number 2023106650002 uses the same method to fabricate torque sensors, as flywheels, like wheels, are disc-shaped rotating components. This method produces torque sensors with advantages such as simple structure, small footprint, and low cost, and can accurately acquire wheel torque loads. By utilizing the acquired torque load, we can generate a standard test load spectrum to provide technical support for lightweight simulation, and quantify the magnitude of the torque load to analyze the transmission efficiency of the whole vehicle, thus playing a role in product design and development and quality improvement.

[0003] When performing real-time wheel torque measurement, since the wheel is constantly rotating, only a wireless telemetry system can be used for signal transmission. However, the electromagnetic induction power supply device and signal transmission module in the wireless telemetry system require sufficient and suitable space and structure to be installed on the wheel. The current problem is that the wheel is located on one side of the axle, there is no stator fixing point on the outside of the wheel, and the available space on the inside of the wheel is small, which makes it inconvenient to measure wheel torque and reduces the efficiency of wheel torque measurement. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a wireless telemetry device for measuring wheel torque. It can realize the wireless transmission and measurement of the rotation signal of the wheel torque sensor without affecting the normal operation of the wheel. It has a simple structure, saves installation space, has low cost, and can measure the rotation torque of the wheel in real time. The obtained torque signal can provide technical support for vehicle energy management and wheel fatigue performance analysis.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A wireless telemetry device for measuring wheel torque includes a first wheel and a second wheel. The second wheel is located to one side of the first wheel and connected to it. The first and second wheels have the same structure and are mounted side-by-side on the drive axle end. Tires are mounted on the outer periphery of the rims of the first and second wheels, respectively. The tires contact the ground to bear the weight of the entire vehicle and increase traction. Multiple strain gauges are mounted at the same positions on the spokes of the first and second wheels. The strain gauges on the first and second wheels are connected in parallel to form two Wheatstone full-bridge circuits, which are calibrated using standard weights to create a torque transmitter. The sensor has a wooden pad installed on the rim of the first wheel, an L-shaped base installed on the wooden pad, and an inductive power supply mechanism installed on the L-shaped base. A square groove is opened on the surface of the L-shaped base, and a signal transmitting module is installed in the square groove. The signal transmitting module can supply power to the strain gauge and transmit the electrical signal generated by the strain gauge to the signal receiving module via an antenna through electromagnetic waves. The signal receiving module can then transmit the measured torque signal to a computer, which can analyze and process the acquired torque signal in real time.

[0006] The inductive power supply mechanism includes a rectangular copper strip and a hollow copper ring. The rectangular copper strip is installed on the side surface of the L-shaped base and is electrically connected to a signal transmitting module. The signal transmitting module is electrically connected to strain gauges on the first and second wheels, respectively, to supply power to the strain gauges. An annular thin plate is provided on one side of the rectangular copper strip. The annular thin plate is installed on the brake drum dust cover, which is a fixed component and is fixedly installed on the vehicle body. A square support plate is installed on the annular thin plate, and a hollow copper ring is installed on the square support plate. The hollow copper ring is located above the rectangular copper strip and is electrically connected to a transformer. The hollow copper ring is indirectly connected to the brake drum dust cover. The transformer is electrically connected to a regulated power supply, which provides power to the transformer. Both the regulated power supply and the transformer are installed on the vehicle body.

[0007] Preferably, the square support plate is composed of a plane with a fifth threaded hole on the bottom surface and a circular slot on the side surface. The square support plate is made of steel, and the arc size of the circular slot matches the diameter of the hollow copper ring. The hollow copper ring is fixed in the circular slot of the square support plate.

[0008] Preferably, the rim of the first wheel has a plurality of first threaded holes in the circumferential direction, and the pad has a second threaded hole corresponding to each of the first threaded holes. The pad is installed on the rim of the wheel by bolts, and the pad is made of heat-insulating wood.

[0009] Preferably, the L-shaped base has a third threaded hole at its bottom and is bolted to the wooden block.

[0010] Preferably, the annular thin plate has multiple fourth threaded holes in the circumferential direction on its surface. On the one hand, these holes can be matched with the fifth threaded holes on the square support plate, and the square support plate can be installed on the annular thin plate by bolts. On the other hand, the annular thin plate can be installed on the brake drum dust cover by bolts.

[0011] Preferably, the spokes of the first wheel are provided with arched hollow holes and round holes.

[0012] The beneficial effects of this invention are: 1) It can wirelessly transmit and measure the rotation signal of the wheel torque sensor without affecting the normal operation of the wheel. It has a simple structure, saves installation space, and has a low cost. It can measure the rotation torque of the wheel in real time, and the obtained torque signal can provide technical support for vehicle energy management and wheel fatigue performance analysis.

[0013] 2) The wooden blocks are made of heat-insulating wood. During long-term vehicle operation, the wheel temperature is high due to the acceleration and braking of the vehicle. The wooden blocks can prevent the signal transmission module from being affected by the high temperature, thus ensuring the stability of the signal transmission module.

[0014] 3) The square support plate consists of a plane with a fifth threaded hole on the bottom and a circular slot on the side. The square support plate is made of steel. The arc size of the circular slot matches the diameter of the hollow copper ring. The hollow copper ring is fixed in the circular slot of the square support plate, which makes the hollow copper ring more secure and increases the reliability of the system.

[0015] 4) Multiple fourth threaded holes are opened in the circumferential direction on the surface of the annular thin plate. On the one hand, it can be matched with the fifth threaded hole on the square support plate and the square support plate can be installed on the annular thin plate by bolts. On the other hand, the annular thin plate can be installed on the brake drum dust cover by bolts. The weight of the annular thin plate is reduced by the fourth threaded holes, which reduces the impact on the wheel running performance.

[0016] 5) The spokes of the first wheel have arched hollow holes and round holes, which increases the sensitivity of the torque sensor. Attached Figure Description

[0017] Appendix Figure 1 This is a schematic diagram of the structure of a wireless telemetry device for measuring wheel torque according to the present invention.

[0018] Appendix Figure 2 This is an exploded view of the first wheel structure in a wireless telemetry device for measuring wheel torque according to the present invention.

[0019] Appendix Figure 3 This is a schematic diagram of the installation of a rectangular copper strip, a hollow copper ring, and an annular thin plate in a wireless telemetry device for measuring wheel torque according to the present invention.

[0020] Appendix Figure 4 This is a schematic diagram of the installation of the first wheel and the second wheel in a wireless telemetry device for measuring wheel torque according to the present invention.

[0021] Appendix Figure 5 This is a schematic diagram showing the connection of the inductive power supply system, antenna, and signal receiving module in a wireless telemetry device for measuring wheel torque according to the present invention.

[0022] In the diagram: 1. First wheel; 01. Second wheel; 001. Drive axle; 101. Rim; 102. Spoke; 103. Strain gauge; 104. Arched perforated hole; 105. Circular hole; 106. First threaded hole; 2. Wooden block; 201. Second threaded hole; 3. L-shaped base; 301. Third threaded hole; 4. Signal transmitting module; 5. Rectangular copper strip; 6. Hollow copper ring; 7. Annular thin plate; 701. Fourth threaded hole; 8. Square support plate; 801. Fifth threaded hole; 9. Stabilized power supply; 10. Transformer; 11. Inductive power supply mechanism; 12. Antenna; 13. Signal receiving module; 14. Computer. Detailed Implementation

[0023] The following is in conjunction with the appendix Figures 1-5 The technical solutions in the embodiments of the present invention are clearly and completely described herein. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0024] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0025] A wireless telemetry device for measuring wheel torque includes a first wheel 1 and a second wheel 01. The second wheel 01 is located on one side of the first wheel 1 and connected to it. The first wheel 1 and the second wheel 01 have the same structure and are mounted side by side on the axle end of a drive axle 001. Tires are respectively mounted on the outer periphery of the rim 101 of the first wheel 1 and the second wheel 01, and the tires are in contact with the ground to bear the weight of the entire vehicle and increase the adhesion to the ground. Multiple strain gauges 103 are respectively mounted at the same position on the spokes 102 of the first wheel 1 and the second wheel 01. The strain gauges 103 on the first wheel 1 and the second wheel 01 are connected in parallel to form two Wheatstone full-bridge circuits, which are calibrated using standard weights to create a torque transmitter. The first wheel 1 has a wooden pad 2 installed on its rim 101. An L-shaped base 3 is installed on the wooden pad 2. An inductive power supply mechanism 11 is installed on the L-shaped base 3. A square groove is opened on the surface of the L-shaped base 3. A signal transmitting module 4 is installed in the square groove. The signal transmitting module 4 can supply power to the strain gauge 103. At the same time, the electrical signal generated by the strain gauge 103 can be transmitted to the signal receiving module 13 via electromagnetic waves using an antenna 12. The signal is transmitted to the signal receiving module 13 in the form of electromagnetic waves through the antenna 12. The signal receiving module 13 can then transmit the measured torque signal to the computer 14. The computer 14 can analyze and process the acquired torque signal in real time.

[0026] The inductive power supply mechanism 11 includes a rectangular copper strip 5 and a hollow copper ring 6. The rectangular copper strip 5 is installed on the side surface of the L-shaped base 3 and is electrically connected to the signal transmitting module 4. The signal transmitting module 4 is electrically connected to the strain gauges 103 on the first wheel 1 and the second wheel 01, respectively, to supply power to the strain gauges 103. An annular thin plate 7 is provided on one side of the rectangular copper strip 5. The annular thin plate 7 is installed on the brake drum dust cover. The brake drum dust cover is a fixed component and is fixedly installed on the vehicle body. A square support plate 8 is installed on the annular thin plate 7. A hollow copper ring 6 is installed on the square support plate 8. The hollow copper ring 6 is located above the rectangular copper strip 5 and is electrically connected to the transformer 10. The hollow copper ring 6 is indirectly connected to the brake drum dust cover. The transformer 10 is electrically connected to the regulated power supply 9, which provides power to the transformer 10. Both the regulated power supply 9 and the transformer 10 are installed on the vehicle body.

[0027] The square support plate 8 is composed of a plane with a fifth threaded hole 801 on the bottom surface and a circular slot on the side surface. The square support plate 8 is made of steel. The arc size of the circular slot matches the diameter of the hollow copper ring 6. The hollow copper ring 6 is fixed in the circular slot of the square support plate 8, thereby making the hollow copper ring 6 more firmly installed and increasing the operational reliability of the system.

[0028] The first wheel 1 has a plurality of first threaded holes 106 on its circumferential direction on its rim 101. The pad 2 has second threaded holes 201 that correspond one-to-one with the first threaded holes 106. The pad 2 is bolted to the rim 101 of the wheel. The pad 2 is made of heat-insulating wood. During long-term driving, the wheel temperature is high under the acceleration and braking of the vehicle. The pad 2 can prevent the signal transmission module 4 from being affected by high temperature, thereby ensuring the stability of the signal transmission module 4. The L-shaped base 3 has a third threaded hole 301 on its bottom and is bolted to the pad 2.

[0029] The annular thin plate 7 has multiple fourth threaded holes 701 on its circumferential direction. On the one hand, it can cooperate with the fifth threaded holes 801 on the square support plate 8 to install the square support plate 8 on the annular thin plate 7 by bolts. On the other hand, the annular thin plate 7 can be installed on the brake drum dust cover by bolts. The fourth threaded holes 701 reduce the weight of the annular thin plate 7 and reduce the impact on the running performance of the first wheel 1. The spokes 102 of the first wheel 1 have arched hollow holes 104 and round holes 105, thereby increasing the sensitivity of the torque sensor.

[0030] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the structure of the invention or exceed the scope defined in the claims, all of which should fall within the protection scope of the present invention.

Claims

1. A wireless telemetry device for measuring the torque of a vehicle wheel, comprising a first wheel and a second wheel, the second wheel being located on one side of the first wheel and connected to the first wheel, the first wheel and the second wheel being structurally identical and mounted side by side on the end of a drive axle, the rims of the first wheel and the second wheel each having a tire mounted thereon, the tires being in contact with the ground to bear the weight of the vehicle and increase the adhesion to the ground, a plurality of strain gauges being mounted on the same position on the spokes of the first wheel and the second wheel respectively, the strain gauges on the first wheel and the second wheel being connected in parallel to form two Wheatstone full-bridge circuits, and the Wheatstone full-bridge circuits being calibrated by a standard weight to form a torque sensor, characterized in that, The rim of the first wheel is provided with a pad, the pad is provided with an L-shaped base, the L-shaped base is provided with an inductive power supply mechanism, a square groove is formed in the surface of the L-shaped base, and a signal transmitting module is arranged in the square groove.

2. A wireless telemetry device for wheel torque measurement according to claim 1, wherein, The inductive power supply mechanism comprises a rectangular copper strip and a hollow copper ring.

3. A wireless telemetry device for wheel torque measurement according to claim 2, wherein, The square support plate is made of steel material.

4. A wireless telemetry device for wheel torque measurement according to claim 3, wherein, A plurality of first threaded holes are formed in the circumferential direction of the rim of the first wheel.

5. A wireless telemetry device for wheel torque measurement according to claim 1, wherein, The pad is made of heat-insulating wood.

6. A wireless telemetry device for wheel torque measurement according to claim 1, wherein, The L-shaped base is provided with a third threaded hole at the bottom, and is installed on the pad by bolts.

7. A wireless telemetry device for wheel torque measurement according to claim 1, wherein, A plurality of fourth threaded holes are formed in the circumferential direction of the surface of the annular thin plate.

8. A wireless telemetry device for wheel torque measurement according to claim 2, wherein, An arc-shaped hollow hole is formed in the spoke of the first wheel.

9. A wireless telemetry device for wheel torque measurement according to claim 1, wherein, A circular hole is formed in the spoke of the first wheel.

10. A wireless telemetry device for wheel torque measurement according to claim 1, wherein, ​

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