Load scaling transducer
By combining internal and external sensors of a load scaling transducer to measure vertical loads, the problem of load sensors in existing technologies being unable to isolate vertical loads from other load modes is solved, thus achieving higher-precision load measurement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HENDRICKSON USA LLC
- Filing Date
- 2025-01-02
- Publication Date
- 2026-06-23
Smart Images
Figure CN122270670A_ABST
Abstract
Description
[0001] Related applications
[0002] This application claims the benefit of U.S. Provisional Application Serial No. 63 / 617,109, filed January 3, 2024, the disclosure of which is hereby incorporated herein by reference in its entirety. Technical Field
[0003] This disclosure relates to the measurement of loads within vehicle components. More specifically, this disclosure relates to load scaling transducers configured to measure vertical loads borne by vehicle components while eliminating the influence of other load modes not intended for measurement. Background Technology
[0004] Various components of a vehicle, such as suspension beams or axles, are designed to bear vertical loads. Accurately measuring the forces exerted on these components during vehicle use is crucial for the design of such components, and various transducers, gauges, and sensors are well-known and widely used for measuring these forces. An exemplary load sensor for measuring vertical loads applied to components of a vehicle's suspension system is described in U.S. Patent No. 7,506,538, which is incorporated herein by reference.
[0005] One drawback of conventional force measurement methods is their inability to isolate the measurement of one force from the influence of other forces not intended for measurement. For example, existing load sensors for mechanical suspensions typically rely on elongators to measure the longitudinal deflection of a component, which can be calibrated to determine the vertical load. However, the way such load sensors are conventionally mounted to vehicle components also makes them sensitive to longitudinal loads. These load sensors can also be affected by torsional strain experienced by the associated vehicle components when traveling on uneven road surfaces.
[0006] Therefore, it would be advantageous to provide a load scaling transducer that improves accuracy in measuring vertical loads by eliminating the effects of other load modes, and a load measurement assembly employing such a transducer. Summary of the Invention
[0007] Several aspects of this subject matter exist, either alone or together, in the apparatus, systems, and methods described and / or claimed below. These aspects may be used alone or in combination with other aspects of the subject matter described herein, and the description of these aspects together is not intended to exclude the use of these aspects alone or in different combinations, as set forth in the appended claims or as amended thereafter.
[0008] In one aspect, a load scaling transducer is provided for use in combination with a vehicle component configured to carry a vertical load. The load scaling transducer includes a mounting device comprising a first enlarged end and a second enlarged end configured to be fixed to the vehicle component, and a bridging section extending from the first enlarged end to the second enlarged end, wherein the thickness of the bridging section is less than the thickness of the first and second enlarged ends. A first sensor is fixed to an inner surface of the bridging section of the mounting device, and a second sensor is fixed to an outer surface of the bridging section of the mounting device.
[0009] In another aspect, a load measuring assembly is provided for use in conjunction with a vehicle component configured to bear a vertical load. The load measuring assembly includes an inner load scaling transducer fixed to an inner surface of the vehicle component, and an outer load scaling transducer fixed to an outer surface of the vehicle component and aligned with the inner load scaling transducer.
[0010] In another aspect, a load scaling transducer is provided for use in conjunction with a vehicle component configured to bear a vertical load. The load scaling transducer includes a fixing device configured to be fixed to the vehicle component, and a sensing strip configured to be at least partially positioned between the fixing device and the vehicle component. The sensing strip includes a central segment with a thickness less than that of another segment of the sensing strip; a first sensor fixed to a surface of the central segment of the sensing strip facing the fixing device; and a second sensor fixed to a surface of the central segment of the sensing strip opposite to the fixing device.
[0011] These and other aspects of this subject matter are set forth in the detailed description of the accompanying drawings below. Attached Figure Description
[0012] Figure 1 and Figure 2 This is an exploded perspective view of the components of the load scaling transducer and load measurement assembly based on the principles of this disclosure;
[0013] Figure 3 yes Figure 1 and Figure 2 Rear perspective view of the mounting device for the load scaling transducer and load measurement assembly;
[0014] Figure 4 This is a side view of a vehicle component undergoing a three-point bend;
[0015] Figure 5 It is by Figure 4 A diagram showing the shear forces experienced by a vehicle component along its length;
[0016] Figure 6 It is by Figure 4 A diagram showing the bending moments experienced by a vehicle component along its length;
[0017] Figure 7 yes Figure 4 A perspective view of the end of a vehicle component, on which a load measuring assembly according to the present disclosure is fixed;
[0018] Figure 8 yes Figure 7 Top plan view of the sensor of the load scaling transducer;
[0019] Figure 9 It shows the adoption of Figure 8 A graph showing the measured values obtained by the load measurement component of the sensor type shown at different load levels;
[0020] Figure 10 It is a diagrammatic view of a vehicle component undergoing a four-point bend;
[0021] Figure 11 It is by Figure 10 A diagram showing the shear forces experienced by a vehicle component along its length;
[0022] Figure 12 It is by Figure 10 A diagram showing the bending moments experienced by a vehicle component along its length;
[0023] Figure 13 It is a front perspective view of a part of a vehicle component, on which a load scaling transducer according to the present disclosure is fixed;
[0024] Figure 14 yes Figure 13 A rear perspective view of a vehicle component, which is fitted with a load measuring assembly according to this disclosure;
[0025] Figure 15 yes Figure 13 Top plan view of the sensor of the load scaling transducer;
[0026] Figure 16 This is an exploded perspective view of an alternative embodiment of a load scaling transducer according to the present disclosure;
[0027] Figure 17 yes Figure 16 Bottom 3D view of the load scaling transducer;
[0028] Figure 18 yes Figure 16 A three-dimensional cross-sectional view of the load scaling transducer;
[0029] Figures 19 to 24 This is a perspective view of an alternative embodiment of a load scaling transducer, each incorporating a plurality of pins, according to the present disclosure. Detailed Implementation
[0030] The embodiments disclosed herein are provided for the purpose of providing an exemplary description of the subject matter. However, these embodiments are merely exemplary and not exclusive, and the subject matter may be embodied in many forms. Therefore, the specific details disclosed herein should not be construed as limiting the subject matter defined in the appended claims.
[0031] A. Exemplary load scaling transducer
[0032] Figure 1 Selected components of an exemplary load scaling transducer 10 embodying various aspects of this disclosure are shown, while Figure 2 Additional components of the load scaling transducer 10 are shown. It should be understood that the load scaling transducer 10 shown is merely exemplary, and load scaling transducers (and load measurement components incorporated into such load scaling transducers) according to this disclosure may be configured differently without departing from the scope of this disclosure.
[0033] The load scaling transducer 10 includes a fixing device 12 (also as Figure 3 As shown), the fastening device has a first enlarged end 14 and a second enlarged end 16, wherein a bridging section 18 extends from the first enlarged end 14 to the second enlarged end 16. It may be advantageous for the fastening device 12 to be formed of a metallic material (e.g., steel or aluminum) and / or as an integral or monolithic structure (e.g., formed via casting or machining processes), although other configurations may also be adopted without departing from the scope of this disclosure (e.g., the bridging section of the fastening device may be attached to two separately provided enlarged ends by welding or other means).
[0034] As used in this context, the term "enlargement" means that each end 14, 16 of the fixing device 12 is larger than the associated bridging segment 18. Most notably, this includes each end 14, 16 having a height and thickness significantly greater than the associated bridging segment 18. As used herein, the term "height" refers to the orientation of the vehicle component or load scaling transducer component or portion thereof during normal use (e.g., the orientation of the vehicle component or load scaling transducer). Figure 1 , Figure 7 , Figure 13 and Figure 14 The term "width" refers to the vertical range from its bottom to its top (as shown), while "width" refers to the horizontal range from its left to its right end in the same orientation of a vehicle component or load scaling transducer component or part thereof. As used herein, the term "thickness" refers to the range of the structure in the directions perpendicular to its width and height.
[0035] In the illustrated embodiment, each end 14, 16 has a width greater than the associated bridging segment 18, although the length of the bridging segment 18 being greater than or equal to the length of the associated ends 14 and 16 is also within the scope of this disclosure. Furthermore, although the illustrated ends 14 and 16 are substantially identical in shape and size, it should be understood that ends 14 and 16 may be configured differently without departing from the scope of this disclosure.
[0036] Ends 14 and 16 are configured to be fixed to vehicle component "A" monitored by load scaling transducer 10. Figure 1 The configuration of each end 14, 16 is inspired by the configuration of the region to which the load scaling transducer 10 is attached and the manner in which the load scaling transducer 10 is mounted to the vehicle component A. For example, in the illustrated embodiment, each enlarged end 14, 16 is attached to the associated vehicle component A by a pair of mechanical fasteners 20, wherein each mechanical fastener 20 is configured as a bolt. The dimensions of the enlarged ends 14 and 16 are selected to accommodate such mechanical fasteners 20, wherein each end 14, 16 has sufficient height and width to allow for the provision of orifices or holes 22 for receiving the mechanical fasteners 20, and sufficient robust thickness (and material composition) to allow the mechanical fasteners 20 to properly secure the fixing device 12 to the vehicle component A without deforming the ends 14 and 16.
[0037] In the illustrated embodiment, four mechanical fasteners 20 are arranged in a rectangular configuration to effectively secure the corners of the fastener 12 to the vehicle component A. To accommodate this method of securing the fastener 12 to the vehicle component A, each end 14, 16 shown has a generally rectangular shape with a height greater than its width. The bridging section 18 shown also has a generally rectangular shape (its width greater than its height) and extends from the middle of one end 14 to the other end 16, thus giving the fastener 12 an H-shaped configuration.
[0038] It should be understood that the method of securing the fastener 12 to the vehicle component A shown is merely exemplary, and other methods may be employed without departing from the scope of this disclosure. This may include the use of mechanical fasteners with different configurations, such as, for example, rivets. Other methods (e.g., bonding or welding) may be employed, as long as they can securely attach the fastener 12 to the associated vehicle component A, as it is advantageous to ensure that the fastener 12 will not rotate or slip relative to the vehicle component A (which could otherwise reduce the repeatability of the strain field).
[0039] The load scaling transducer 10 shown includes a first friction pad 24 associated with a first enlarged end 14 and a second friction pad 26 associated with a second enlarged end 16, wherein each friction pad 24, 26 is positioned between its corresponding end and the surface of the vehicle component A to which the fixing device 12 is fixed. Figure 1 and Figure 2 As shown, each friction pad 24, 26 has a shape substantially the same as the corresponding enlarged ends 14, 16, including a pair of orifices or holes aligned with the orifices or holes 22 of the associated ends 14, 16 to accommodate the illustrated mechanical fastener 20. It should be understood that the size and shape of the friction pads 24 and 26 may differ from the associated ends 14 and 16 of the fastening device 12 without departing from the scope of this disclosure. However, since the friction pads 24 and 26 are designed to prevent or at least minimize joint slippage (thus ensuring that deformation of vehicle component A is transmitted to the load scaling transducer 10 for signal repeatability and consistent zeroing), it may be advantageous for the size and shape of the friction pads 24 and 26 to be at least comparable (even if not identical) to the size and shape of the ends 14 and 16 of the fastening device 12 to ensure that the friction pads 24 and 26 can optimally perform their intended function. In other embodiments, the friction pads may be omitted from the load scaling transducer.
[0040] Now turn to the bridging section 18 of the fixing device 12, which is sized and configured to accommodate a pair of sensors, one of which, sensor 30a, is fixed to the outer surface 32 of the bridging section 18. Figure 1 ), and another sensor 30b is fixed to the inner surface 34 of the bridging section 18 ( Figure 3 As used in this context, the term "inner side" refers to the surface of the bridging section 18 facing the vehicle component A to which the fixing device 12 is fixed, while the term "outer side" refers to the surface of the bridging section 18 facing away from the vehicle component A. When the vehicle component A is subjected to a vertical load, local strain regions may exist within the load scaling transducer 10 itself. Therefore, using a pair of sensors 30a and 30b allows the readings of the two sensors 30a and 30b to be combined in a manner that cancels out opposing local strains, while avoiding any errors or deviations arising across the thickness of the bridging section 18 (by calculating the average of the measurements of the two sensors 30a and 30b). As mentioned above, the thickness of the bridging section 18 can be less than the associated ends 14 and 16 of the fixing device 12, which allows the inner sensor 30b to be fixed between the bridging section 18 and the vehicle component A without damage. The relatively thin bridging section 18 (preferably with a uniform thickness) also improves the sensitivity of the sensors 30a and 30b, resulting in higher load calculation accuracy and a lower signal-to-noise ratio.
[0041] The two sensors 30a and 30b can be configured differently, although it may be more advantageous to configure them similarly (even if not identically). As for the specific configuration of the individual sensors 30a and 30b, depending on whether the vehicle component A monitored by the load scaling transducer 10 will experience three-point or four-point bending, different configurations may be advantageous. This document will explain these different load conditions and the corresponding sensor configurations in more detail.
[0042] Figure 2 Two additional components of the exemplary load scaling transducer 10 are shown: a communication module 36 and a protective housing 38. The communication module 36 is electrically connected to sensors 30a and 30b to provide a communication link between sensors 30a and 30b and a data processor (e.g., a computer), and can be configured in various ways without departing from the scope of this disclosure. In one embodiment, the communication module 36 is configured to include a printed circuit board with temperature compensation, battery power transfer, and wired or wireless communication capabilities. As for the protective housing 38, it is fixed relative to the mounting device 12 such that at least a portion of the communication module 36 is positioned therebetween, thereby shielding and protecting the communication module 36 from the environment in which the vehicle component A is used or tested. Therefore, the shape of the protective housing 38 will depend on the configuration of the associated communication module 36 and the mounting device 12, wherein the protective housing 38 is formed of a material or combination of materials configured to prevent damage to the communication module 36. This may include the protective housing 38 being formed of a metallic material, optionally including an elastomeric material to provide cushioning protection for the communication module 36.
[0043] It needs to be emphasized again that Figure 1 and Figure 2 The load scaling transducer 10 shown is only an example of one possible configuration, and other configurations (such as those described in more detail) are also possible. Figures 16 to 24 The configuration shown is also possible without departing from the scope of this disclosure. This may include: a separate component of the load scaling transducer 10 being coupled with... Figure 1 and Figure 2 The configuration shown may vary, omit selected components, and / or include additional components.
[0044] B. Three-point bending
[0045] As described above, it can be advantageous to be inspired by the manner in which the analyzed vehicle component will be loaded when configuring the sensors of the load scaling transducer according to this disclosure. For example, the forces experienced by a vehicle component subjected to three-point bending (and possibly measured by the sensors of the associated load scaling transducer) differ from those experienced by a vehicle component subjected to four-point bending. As will be described, the optimal placement of the load scaling transducer (e.g., on or away from the neutral axis of the vehicle component) can also depend on how the analyzed vehicle component will be loaded.
[0046] Figure 4 The diagram illustrates vehicle component "B" undergoing three-point bending, with a downward force "P" applied at the midpoint of vehicle component B. Vehicle component B is supported at or near its two ends "C" and "D," where reactive forces "R1" and "R2" counteract the applied force P. The magnitude of the applied force P is intended to represent the vertical load that vehicle component B might be expected to experience during the use of a vehicle in which it is incorporated. In one example, vehicle component B could be of the type suitable for a "46K" suspension with a maximum load capacity of 46,000 lbs, such as vehicle component B configured as a balance beam or travel beam of a HAULMAAX® EX heavy-duty suspension manufactured by Hendrickson USA, LLC, Schaumburg, Illinois. This type of suspension contains two such... Figure 4 The vehicle component B shown is designed such that each component B must be able to individually support a vertical load of 23,000 pounds. In this case, the applied vertical load P is 23,000 pounds, with each reactive force R1 and R2 being 11,500 pounds. Figure 5 The diagram shows the shear force experienced by vehicle component B along its length under this load condition, while Figure 6 The bending moment experienced by vehicle component B along its length is shown.
[0047] Figure 7 An end portion of vehicle component B is shown, wherein a load scaling transducer 10a according to the present disclosure is fixed to the inner surface of vehicle component B. While this surface is referred to herein as the “inner” surface (and the opposing surface of vehicle component B as the “outer” surface), it should be understood that these descriptions of the surfaces of vehicle component B are intended only to indicate surfaces facing opposite directions and not to limit a particular orientation of component B within the vehicle suspension. In practice, a pair of load scaling transducers according to the present disclosure can be applied to opposing “front” and “rear” surfaces of the vehicle component, wherein one of these surfaces is considered the “inner” surface and the other the “outer” surface.
[0048] like Figure 5 and Figure 6As shown, the force experienced at one end portion of vehicle component B is substantially the same as the force experienced at the other end portion, thus eliminating the need to mount additional load scaling transducers to the inner surfaces of both end portions of vehicle component B. However, while it is not necessary to mount both load scaling transducers to the same surface of vehicle component B, it has been found advantageous to mount one load scaling transducer 10a to the inner surface of vehicle component B and one load scaling transducer 10b to the opposite outer surface of component B and aligned with the other load scaling transducer 10a (where the two load scaling transducers are combined to define the load measurement assembly 40). As will be explained in more detail, this arrangement of fixing the two load scaling transducers 10a and 10b (which may be substantially identical in one embodiment) aligned with each other to the opposite inner and outer surfaces of vehicle component B allows for improved measurement of the vertical load P applied to component B.
[0049] The specific positions of the two load scaling transducers 10a and 10b relative to the associated vehicle component B can vary without departing from the scope of this disclosure. However, it has been found that fixing the load scaling transducers 10a and 10b to a relatively small area of the cross-sectional area of the vehicle component B can be advantageous for improving the performance of the sensor 30 for each load scaling transducer 10a, 10b. In the illustrated embodiment, the cross-sectional area of the vehicle component B decreases from its maximum area at its midpoint (where the vertical load P is applied) to its minimum area at its ends C and D. Therefore, since the cross-sectional area of the vehicle component B reaches its minimum at this point, it would be optimal to place the two load scaling transducers 10a and 10b adjacent to one of the ends C and D of the vehicle component A. However, in Figure 7 In the illustrated embodiment, vehicle component B includes a bracket E adjacent to each end portion C, D, which prevents one of the load scaling transducers 10a, 10b from being mounted in the optimal position. In this case, load scaling transducers 10a and 10b are mounted to vehicle component B at a position between bracket E and the midpoint of vehicle component B, immediately adjacent to bracket E (i.e., the position with the smallest cross-sectional area in this region of vehicle component B). In other embodiments where such brackets are omitted or where the load scaling transducers 10a and 10b are configured and sized to be positioned between the ends C, D of vehicle component B and bracket E, load scaling transducers 10a and 10b can be positioned closer to the ends C, D (at a more optimal position with the smallest cross-sectional area of vehicle component B).
[0050] The positions of the two load scaling transducers 10a and 10b along the height of vehicle component B can vary without departing from the scope of this disclosure. However, it has been found that mounting the load scaling transducers 10a and 10b on the neutral axis of vehicle component B can be advantageous in order to eliminate or at least minimize longitudinal load sensitivity (i.e., no shear response to longitudinal loads at the neutral axis) while maximizing sensitivity to vertical loads.
[0051] Figure 8 An exemplary sensor 30' configuration is shown, which has been found advantageous for use in load measurement assemblies for use with vehicle component B subjected to three-point bending. The illustrated sensor 30' is a semiconductor backplane, half-bridge gauge with a "torque" configuration of the type manufactured by Micron Instruments of Simi Valley, California, but it should be understood that sensors functionally and structurally similar to the illustrated sensor 30' may also be employed.
[0052] Sensor 30' includes two deformable elements 42 and 44 oriented perpendicularly to each other, with each element oriented at 45° to the horizontal plane. Due to this orientation of the deformable elements 42 and 44, sensor 30' measures strain along two diagonal directions, such as... Figure 8 As shown by the dashed lines in the diagram. Summing the responses of the four such sensors (i.e., the inner sensor of the inner load scaling transducer 10a, the outer sensor of the inner load scaling transducer 10a, the inner sensor of the outer load scaling transducer 10b, and the outer sensor of the outer load scaling transducer 10b) minimizes sensitivity to lateral and torsional load modes, thereby offsetting the torsional shear stress, which is independent of vertical load measurements. Figure 9 The measurements obtained by the load measurement assembly (i.e., the combination of its four sensors) are shown, thus reflecting the linear response throughout the measurement range.
[0053] C. Four-point bend
[0054] Figure 10 This is a schematic diagram of vehicle component "F" undergoing four-point bending, with vertical loads applied at two points "G" and "H" (which can be located at the two spring seats of the steering axle) between its ends "I" and "J". The magnitude of each applied vertical load is "P / 2", where the downward resultant force equals "P". Reactive forces "R1" and "R2" are generated at ends I and J of vehicle component F to counteract the total applied force P. (See above regarding...) Figure 4As described in the load conditions, the magnitude of the applied force P is intended to represent the vertical load that vehicle component F may be expected to experience during the use of the vehicle in which it is incorporated. For example, vehicle component F may be configured as a front steering axle manufactured by Hendrickson USA, LLC as a type sold by STEERTEK NXT. Figure 11 The diagram shows the shear force experienced by vehicle component F along its length under this load condition, while Figure 12 The bending moment experienced by vehicle component F along its length is shown.
[0055] Figure 13 The middle section of vehicle component F is shown (shown as the area between the two spring seats I and J of component F), in which a load scaling transducer 10c according to this disclosure is fixed to the inner surface of vehicle component F. As explained above with respect to an exemplary load measuring assembly configured for use in conjunction with a vehicle component subjected to three-point bending, although this surface is referred to herein as an "inner" surface, it should be understood that the terms "inner" and "outer" are used in this context to refer to surfaces facing opposite directions, rather than limiting a specific orientation of component F within the vehicle suspension. In fact, for such... Figure 13 The type of steering axle shown has one load scaling transducer 10c fixed to the “front” surface of the beam and another load scaling transducer fixed to the “rear” surface of the beam (so that one of these beam surfaces can be regarded as the “inner” surface and the other as the “outer” surface).
[0056] like Figure 11 As shown, vehicle component F does not experience shear force between the two points of application of the vertical load, making the middle section of component F a suitable location for the load scaling transducer 10c. (As mentioned above regarding...) Figure 7 As explained by the placement of load scaling transducers 10a and 10b, it may be advantageous to position load scaling transducer 10c at a location where the cross-sectional area of vehicle component F is relatively small. However, in the illustrated embodiment, vehicle component F has a substantially uniform cross-sectional area along its middle section, so any location along the middle section is suitable for mounting load scaling transducer 10c.
[0057] As mentioned above Figure 7 The placement of load scaling transducers 10a and 10b in the figure explains that mounting one load scaling transducer 10c to the inner surface of the vehicle component F and mounting another load scaling transducer 10d to the opposite outer surface of the component F to align with the other load scaling transducer 10c defines, as follows: Figure 14The load measurement assembly 40 shown is advantageous. Based on the above discussion, this arrangement of fixing two load scaling transducers 10c and 10d (which may be substantially identical in one embodiment) aligned with each other to the opposing inner and outer surfaces of the vehicle component F allows for improved measurement of the vertical load P applied to the component F.
[0058] The positions of the two load scaling transducers 10c and 10d along the height of the vehicle component F can vary without departing from the scope of this disclosure. However, it has been found that mounting the load scaling transducers 10c and 10d at a position away from (e.g., above) the neutral axis of the vehicle component F can be more advantageous to maximize vertical load sensitivity and allow measurement of bending or axial strain (since there is no bending strain at the neutral axis).
[0059] Figure 15 An exemplary sensor 30” configuration is shown, which has been found advantageous for use in load measurement assemblies for use with vehicle components F subjected to four-point bending. The illustrated sensor 30” is a semiconductor backplane, half-bridge gauge with a “load” configuration of the type manufactured by Micron Instruments, but it should be understood that sensors functionally and structurally similar to the illustrated sensor 30” may also be employed.
[0060] Sensor 30” includes two deformable elements 46 and 48 oriented perpendicularly to each other, one deformable element 46 being vertically oriented and the other deformable element 48 being horizontally oriented. Due to this orientation of the deformable elements 46 and 48, sensor 30” measures strain along the vertical and horizontal directions, such as Figure 15 As shown by the dashed lines in the diagram. Summing the responses of four such sensors (i.e., the inner sensor of the inner load scaling transducer 10c, the outer sensor of the inner load scaling transducer 10c, the inner sensor of the outer load scaling transducer 10d, and the outer sensor of the outer load scaling transducer 10d) minimizes the sensitivity to longitudinal load patterns (by canceling out the opposing longitudinal loads measured by the two load scaling transducers 10c and 10d) to improve vertical load measurements.
[0061] D. Alternative Examples
[0062] Figures 16 to 24 Alternative embodiments of the load scaling transducer according to this disclosure are shown. It should be understood that... Figures 16 to 24 The load scaling transducer shown can be used interchangeably with the load scaling transducer previously described, including... Figures 16 to 24 A pair of load scaling transducers of the type shown are incorporated into a load measurement assembly of the type described above.
[0063] Figures 16 to 24The load scaling transducer is configured to isolate the transducer's sensor from bolt-up strain that can occur when the transducer is secured to an associated vehicle component. Bolt-up strain can occur when the transducer is secured to a surface of a vehicle component that is not perfectly flat but has some curvature. Secured to such a curved surface, the transducer can cause a portion of the transducer (e.g., the mounting bracket) to bend to match the curvature of the vehicle component's surface. When the sensor is fixedly secured to a portion of the transducer that has been deformed or deflected, the sensor itself can deform, potentially preventing the sensor from correctly recording unloaded conditions. Figures 16 to 18 The load scaling transducer avoids this potential deformation of the sensor by providing a "body constraint" configuration, while Figures 19 to 24 The load scaling transducer uses pins to prevent deformation of one or more sensors, as will be described in more detail. In each case, when the load scaling transducer is secured to a vehicle component, deformation experienced by a component or portion of the load scaling transducer will not be imparted to one or more sensors of the load scaling transducer.
[0064] exist Figures 16 to 18 In one embodiment, the load scaling transducer 50 includes a fixing device 52, a sensing strip 54, and a pair of sensors 56a and 56b. The fixing device 52 and... Figure 3 The fastening device 12 is similarly configured, wherein a pair of enlarged ends 58 and 60 are connected by a bridging section 62. In the illustrated embodiment, each enlarged end 58, 60 of the fastening device 52 includes a pair of orifices or holes 64 configured to receive a plurality of mechanical fasteners 66 for securing the fastening device 52 to the vehicle component, although it should be understood that other methods may be provided for securing the fastening device 52 to the vehicle component (including methods that do not require the enlarged ends 58 and 60 of the fastening device 52 to have any orifices or holes 64).
[0065] Figures 16 to 18 Fixing device 52 and Figure 3 The difference in the fixing device 12 is that it defines a channel or groove 68 that extends laterally from one enlarged end 58 to the other enlarged end 60, collinear with the bridging section 62. Figure 17 and Figure 18 As shown, the channel or groove 68 is configured to receive the sensing strip 54, which preferably has a close or tight fit with the surface of the channel or groove 68 to transmit shear forces from vertically supported vehicle components to the sensing strip 54 (and associated sensors 56a and 56b) via the fixing device 52. Although Figures 16 to 18Although not shown, the load scaling transducer 50 may include end caps or the like to hold the sensing strip 54 in the correct position within the channel or groove 68 of the fixing device 52.
[0066] The sensing strip 54 (which may be formed of a general rigid material, such as metal) includes a relatively narrow central section 70, wherein sensors 56a, 56b are applied to opposite faces or surfaces of the central section 70. Figure 18 As best shown, the central section 70 allows sensors 56a and 56b to be applied to the sensing strip 54 without contacting the vehicle component to which the fixing device 52 or load scaling transducer 50 is fixed. The configuration of sensors 56a and 56b can vary without departing from the scope of this disclosure. As described in more detail above, the configuration of sensors 56a and 56b can be inspired by the nature of the vehicle component to which the load scaling transducer 50 is applied; different sensor configurations are advantageous for vehicle components subjected to three-point or four-point bending.
[0067] In order to Figures 16 to 18 The load scaling transducer 50 is fixed to the vehicle component, and the sensing strip 54 (including sensors 56a and 56b) is installed within the channel or recess 68 of the fixing device 52. The fixing device 52 is then fixed to an appropriate area of the vehicle component (e.g., depending on whether the vehicle component will experience three-point or four-point bending, as described above), optionally positioning at least one friction pad between the fixing device 52 and the vehicle component. Furthermore, when fixing the load scaling transducer 50 to the vehicle component, [the following can be done / can ... Figure 2 A communication module and / or protective housing of the type shown are associated with the load scaling transducer. Since the sensing strip 54 is independent of the mounting device 52, any deformation that the mounting device 52 may produce when it is secured to a vehicle component (e.g., if the mounting device 52 deforms to match a non-planar surface of the vehicle component) will not be transmitted to the sensing strip 54 and / or to the sensors 56a and 56b mounted to the sensing strip 54. As described above, isolating the sensors 56a and 56b of the load scaling transducer 50 from the bolt strain that may occur when the load scaling transducer 50 is secured to the associated vehicle component can improve the performance of the sensors 56a and 56b by preserving their initial unloaded configuration.
[0068] Turn now Figures 19 to 24 In one embodiment, each load scaling transducer 100, 102, and 104 includes a fixing device, a sensing strip, and a pair of sensors (not shown). Figure 19 and Figure 20In some embodiments, the fixing device 106 is a one-piece or integral component defining a pair of orifices or holes 108 configured to receive mechanical fasteners (not shown) to secure the load-scaling transducer 100 to an associated vehicle component. Although Figure 19 and Figure 20 A fixing device 106 configured to be secured to a vehicle component using mechanical fasteners is shown; however, it should be understood that other methods may be used to secure the fixing device 106 to the vehicle component, as described above with respect to other fixing devices according to this disclosure. If orifices or holes 108 are provided, each orifice or hole 108 may be provided with a substantially annular extension 110 received within an aligned orifice or hole 112 of the sensing strip 114 to align and secure the sensing strip 114 relative to the fixing device 106. The extension 110 also acts as a spacer between the vehicle component and the surface of the fixing device 106 facing the vehicle component, thereby ensuring that the sensor of the sensing strip 114 is not compressed between the fixing device 106 and the vehicle component.
[0069] In addition to the optional orifice or hole 112, the sensing strip 114 also includes a plurality of holes 116, each configured to receive a pin 118 which is also partially positioned within the alignment hole 120 of the fixing device 106. Unlike mechanical fasteners of the type described herein, the pin 118 is not intended to attach the load-scaling transducer 100 to an associated vehicle component, but rather to transmit deformation of the vehicle component (under vertical loading) to the sensing strip 114 (and its sensor) via the fixing device 106. Therefore, the pin 118 does not provide the type of bolt strain that would tend to deform the sensor of the sensing strip 114 in a manner that would affect its normal performance.
[0070] As for the configuration of the sensing strip 114 (which can be formed from a general rigid material, such as metal), its contour and... Figure 3 The mounting device 12 has a similar outline and has two enlarged ends 122 and 124 joined by a central section 126. Holes 116 of the sensing strip 114 are positioned around the central section 126, at which the sensor is fixed to the opposite face or surface of the sensing strip 114 (one face towards the mounting device 106, and the other face towards the vehicle component to which the load scaling transducer 100 is attached). Figure 3 Fixing device 12 or Figures 16 to 18Similar to the sensing strip 54, the central section 126 is relatively thin to allow the sensor to be fixed to its opposite face or surface without contacting the vehicle component to which the mounting device 106 or load scaling transducer 100 is fixed. The sensor configuration can vary without departing from the scope of this disclosure, depending on, for example, the nature of the vehicle component to which the load scaling transducer 100 is applied; different sensor configurations are advantageous for vehicle components subjected to three-point or four-point bending (as described above).
[0071] In order to Figure 19 and Figure 20 The load scaling transducer 100 is secured to the vehicle component. The sensing strip 114 (including the associated sensor) is aligned with and mounted to the mounting device 106, wherein pins 118 maintain the alignment of the two components. The mounting device 106 is then secured to the appropriate area of the vehicle component (e.g., depending on whether the vehicle component will experience three-point or four-point bending, as described above), optionally positioning at least one friction pad between the sensing strip 114 and the vehicle component. Furthermore, when securing the load scaling transducer 100 to the vehicle component, [the following can be done / can be done / etc.]. Figure 2 A communication module and / or protective housing of the type shown are associated with the load scaling transducer. Since the sensing strip 114 is independent of the mounting device 106, any deformation that may occur in the mounting device 106 when it is secured to the vehicle component will not be transmitted to the sensing strip 114 and / or to the sensor mounted to it. As described above, isolating the sensor of the load scaling transducer 100 from the bolt strain that may occur when the load scaling transducer 100 is secured to the associated vehicle component in this way can improve the sensor's performance by preserving its initial unloaded configuration.
[0072] Turn now Figure 21 and Figure 22 The load scaling transducer 102 includes a fixing device 128 and a sensing strip 130, which are connected to... Figure 19 and Figure 20 The fixing device 106 is similar to the sensing strip 114. For example, in Figure 19 and Figure 20 In the embodiments, Figure 21 and 22 The fixing device 128 shown is a one-piece or integral component that defines a pair of orifices or holes configured to receive mechanical fasteners 132 to secure the load-scaling transducer 102 to an associated vehicle component. Although Figure 21 and Figure 22 A fastener 128 configured to be secured to a vehicle component using a mechanical fastener 132 is shown, but it should be understood that other methods may be used to secure the fastener 128 to the vehicle component, as described above with respect to other fasteners according to this disclosure.
[0073] Figure 21 and Figure 22 Fixing device 128 and Figure 19 and Figure 20 A significant difference between the fixing devices 106 is that: Figure 21 and 22 The fixing device 128 includes an integrally formed pin or extension 134 configured to be received in a corresponding hole 136 in the sensing strip 130, instead of providing a pin independent of the fixing device 106 (as in...). Figure 19 and Figure 20 (In the embodiments). Without departing from the scope of this disclosure, pin 134 can be configured in various ways, wherein Figure 21 and Figure 22 The pin 134 is shown to have a tapered section, which causes the pin 134 to act as a spacer between the vehicle component and the surface of the fixing device 128 facing the vehicle component, thereby ensuring that the sensor of the sensing strip 130 is not compressed between the fixing device 128 and the vehicle component.
[0074] As in Figure 19 and Figure 20 In the embodiments, Figure 21 and Figure 22 The sensing strip 130 shown has two enlarged ends 138 and 140, which are joined by a relatively thin central section 142. A hole 136 of the sensing strip 130 is positioned around the central section 142, wherein the sensor is fixed to opposite faces or surfaces of the sensing strip 130 (one facing the mounting device 128 and the other facing the vehicle component to which the load scaling transducer 102 is attached). As mentioned above, the sensor configuration can vary without departing from the scope of this disclosure, depending on, for example, the nature of the vehicle component to which the load scaling transducer 102 is applied; different sensor configurations are advantageous for vehicle components subjected to three-point or four-point bending.
[0075] In order to Figure 21 and Figure 22 The load scaling transducer 102 is fixed to the vehicle component. The sensing strip 130 (including the associated sensor) is aligned with and mounted to the mounting device 128, wherein pins 134 maintain the alignment of the two components. The mounting device 128 is then secured to the appropriate area of the vehicle component, optionally positioning at least one friction pad between the sensing strip 130 and the vehicle component. Furthermore, when fixing the load scaling transducer 102 to the vehicle component, [the following can be done / can be done / etc.]. Figure 2 The type of communication module and / or protective housing shown is associated with this load scaling transducer.
[0076] at last, Figure 23 and Figure 24A load scaling transducer 104 is shown, which can be considered as Figures 19 to 22 Variations of the embodiments. In Figure 23 and Figure 24 In the embodiments described, the fixing device 144 is a two-piece component (rather than as shown in the original text). Figures 19 to 22 In the embodiments of the single-piece components), each component 144a and 144b defines an aperture or hole 146 configured to receive a mechanical fastener 148 to secure the load-scaling transducer 104 to an associated vehicle component. Although Figure 23 and Figure 24 A fastening device 144 configured to be secured to a vehicle component using mechanical fasteners 148 is shown; however, it should be understood that other methods may be used to secure the fastening device 144 to the vehicle component, as described above with respect to other fastening devices according to this disclosure. Furthermore, although the two components 144a and 144b of the fastening device 144 are shown as substantially identical and rectangular, it should be understood that they may have different shapes (e.g., non-rectangular), and the configurations of the two components 144a and 144b of a single fastening device 144 may differ from each other.
[0077] exist Figure 23 and Figure 24 In the illustrated embodiment, each component 144a, 144b of the fixing device 144 is provided with a pair of holes 150, which are configured to receive pins 152, which are also received by corresponding holes 154 of the associated sensing strip 156 (similar to...). Figure 19 and Figure 20 (Example). However, it should be understood that, instead of providing a separate pin 152, one or both components 144a, 144b of the fixing device 144 may include an integrally formed pin or extension, which is received by aligned holes 154 defined in the sensing strip 156 (as in... Figure 21 and Figure 22 (as in the embodiments).
[0078] As in Figures 19 to 22 In the embodiments, Figure 23 and Figure 24 The sensing strip 156 shown has two enlarged ends 158 and 160, connected by a relatively thin central section 162. Holes 154 of the sensing strip 156 are positioned around the central section 162, at which the sensor is fixed to the opposite face or surface of the sensing strip 162 (one facing the mounting device 144, and the other facing the vehicle component to which the load scaling transducer 104 is attached). As described above, the sensor configuration can vary without departing from the scope of this disclosure, depending on, for example, the nature of the vehicle component to which the load scaling transducer 104 is applied; different sensor configurations are advantageous for vehicle components subjected to three-point or four-point bending.
[0079] In order to Figure 23 and Figure 24 The load scaling transducer 104 is fixed to the vehicle component, and the sensing strip 156 (including the associated sensor) is aligned with and mounted to the two members 144a and 144b of the mounting device 144, wherein pins 152 maintain the alignment of these members. The mounting device 144 is then fixed to the appropriate area of the vehicle component, optionally positioning at least one friction pad between the sensing strip 156 and the vehicle component. Furthermore, when fixing the load scaling transducer 104 to the vehicle component, [the following can be done / can be done / etc.]. Figure 2 The type of communication module and / or protective housing shown is associated with this load scaling transducer.
[0080] aspect
[0081] Aspect 1. A load scaling transducer for use in combination with a vehicle component configured to carry a vertical load, the load scaling transducer comprising: a fixing device including a first enlarged end configured to be fixed to the vehicle component, a second enlarged end configured to be fixed to the vehicle component, and a bridging section extending from the first enlarged end to the second enlarged end, wherein the thickness of the bridging section is less than the thickness of the first enlarged end and the second enlarged end; a first sensor fixed to an inner surface of the bridging section of the fixing device; and a second sensor fixed to an outer surface of the bridging section of the fixing device.
[0082] Aspect 2. The load scaling transducer as described in aspect 1, wherein the height of the first enlarged end is greater than the width of the first enlarged end, the height of the second enlarged end is greater than the width of the second enlarged end, and the width of the bridging segment is greater than the height of the bridging segment.
[0083] Aspect 3. The load scaling transducer as described in any of the preceding aspects, wherein each of the first enlarged end, the second enlarged end, and the bridging segment is generally rectangular.
[0084] Aspect 4. The load scaling transducer as described in any of the preceding aspects, wherein the fixing device is H-shaped.
[0085] Aspect 5. The load scaling transducer as described in any of the preceding aspects, wherein each enlarged end defines a plurality of orifices, and each orifice is configured to receive mechanical fasteners for securing the fixing device to the vehicle component.
[0086] Aspect 6. The load scaling transducer as described in any of the preceding aspects, further comprising a first friction pad configured to be positioned between the first enlarged end and the vehicle component, and a second friction pad configured to be positioned between the second enlarged end and the vehicle component.
[0087] Aspect 7. The load scaling transducer as described in any of the preceding aspects, wherein each sensor is configured to measure strain in the vertical and horizontal directions.
[0088] Aspect 8. The load scaling transducer as described in any one of Aspects 1 to 6, wherein each sensor is configured to measure strain in two diagonal directions.
[0089] Aspect 9. The load scaling transducer as described in any of the preceding aspects, further comprising a protective housing fixed to the mounting device and a communication module electrically connected to the sensor and positioned between the protective housing and the mounting device.
[0090] Aspect 10. The load scaling transducer as described in any of the preceding aspects, wherein the enlarged ends are substantially identical and the sensors are substantially identical.
[0091] Aspect 11. A load measurement assembly for use in combination with a vehicle component configured to carry a vertical load, the load measurement assembly comprising: an inner load scaling transducer fixed to an inner surface of the vehicle component; and an outer load scaling transducer fixed to an outer surface of the vehicle component and aligned with the inner load scaling transducer.
[0092] Aspect 12. The load measurement assembly of aspect 11, wherein each load scaling transducer includes a fixing device comprising a first enlarged end fixed to the vehicle component, a second enlarged end fixed to the vehicle component, and a bridging section extending from the first enlarged end to the second enlarged end, wherein the thickness of the bridging section is less than the thickness of the first enlarged end and the second enlarged end; a first sensor fixed to an inner surface of the bridging section of the fixing device; and a second sensor fixed to an outer surface of the bridging section of the fixing device.
[0093] Aspect 13. The load measurement assembly as described in aspect 12, wherein for each load scaling transducer, the height of the first expanding end is greater than the width of the first expanding end, the height of the second expanding end is greater than the width of the second expanding end, and the width of the bridging segment is greater than the height of the bridging segment.
[0094] Aspect 14. The load measurement assembly as described in any one of Aspects 12 to 13, wherein for each load scaling transducer, each of the first enlarged end, the second enlarged end, and the bridging segment is generally rectangular.
[0095] Aspect 15. The load measurement assembly as described in any one of Aspects 12 to 14, wherein the fixing device is H-shaped for each load scaling transducer.
[0096] Aspect 16. The load measuring assembly as described in any one of Aspects 12 to 15, further comprising a plurality of mechanical fasteners, wherein for each load scaling transducer, each enlarged end defines a plurality of orifices, and each orifice receives a different one of the mechanical fasteners for securing the fixing device to the vehicle component.
[0097] Aspect 17. The load measuring assembly of any one of Aspects 12 to 16, further comprising, for each load scaling transducer, a first friction pad positioned between the first enlarged end and the vehicle component, and a second friction pad positioned between the second enlarged end and the vehicle component.
[0098] Aspect 18. The load measurement assembly as described in any one of Aspects 12 to 17, wherein for each load scaling transducer, each sensor is configured to measure strain in the vertical and horizontal directions.
[0099] Aspect 19. The load measurement assembly as described in aspect 18, wherein each load scaling transducer is fixed to the vehicle component to position the sensor away from the neutral axis of the vehicle component.
[0100] Aspect 20. The load measurement assembly as described in any one of Aspects 12 to 17, wherein for each load scaling transducer, each sensor is configured to measure strain in two diagonal directions.
[0101] Aspect 21. The load measurement assembly as described in aspect 20, wherein each load scaling transducer is fixed to the vehicle component to position the sensor on the neutral axis of the vehicle component.
[0102] Aspect 22. The load measurement assembly of any one of Aspects 12 to 21, further comprising for each load scaling transducer a protective housing fixed to the mounting device and a communication module electrically connected to the sensor and positioned between the protective housing and the mounting device.
[0103] Aspect 23. The load measurement assembly as described in any one of Aspects 12 to 22, wherein the enlarged end is substantially the same for each load scaling transducer, and the sensor is substantially the same.
[0104] Aspect 24. The load measurement assembly as described in any one of Aspects 11 to 22, wherein the inner load scaling transducer is substantially the same as the outer load scaling transducer.
[0105] Aspect 25. The load measurement assembly as described in Aspect 11, wherein the vehicle component is configured to carry the vertical load in a three-point bend, the inner load scaling transducer includes a first sensor, the outer load scaling transducer includes a second sensor, and each load scaling transducer is fixed to the vehicle component to position the sensor on the neutral axis of the vehicle component.
[0106] Aspect 26. The load measurement assembly as described in aspect 25, wherein each load scaling transducer includes an additional sensor, and the two sensors of each load scaling transducer are substantially identical to each other.
[0107] Aspect 27. The load measurement assembly as described in aspect 26, wherein the four sensors are substantially identical to each other.
[0108] Aspect 28. The load measuring assembly as described in any one of Aspects 25 to 27, wherein each sensor is configured to measure strain in two diagonal directions.
[0109] Aspect 29. The load measurement assembly of aspect 26, wherein each load scaling transducer includes a fixing device comprising a first enlarged end fixed to the vehicle component, a second enlarged end fixed to the vehicle component, and a bridging section extending from the first enlarged end to the second enlarged end, wherein one sensor of each load scaling transducer is fixed to the inner surface of the bridging section of the corresponding load scaling transducer, and another sensor of each load scaling transducer is fixed to the outer surface of the bridging section of the corresponding load scaling transducer.
[0110] Aspect 30. The load measurement assembly as described in aspect 29, wherein for each load scaling transducer, the thickness of the bridging section is less than the thickness of the first enlarged end and the second enlarged end.
[0111] Aspect 31. The load measurement assembly of any one of Aspects 29 to 30, wherein for each load scaling transducer, the height of the first expanding end is greater than the width of the first expanding end, the height of the second expanding end is greater than the width of the second expanding end, and the width of the bridging segment is greater than the height of the bridging segment.
[0112] Aspect 32. The load measurement assembly as described in any one of Aspects 29 to 31, wherein for each load scaling transducer, each of the first enlarged end, the second enlarged end, and the bridging segment is generally rectangular.
[0113] Aspect 33. The load measurement assembly as described in any one of Aspects 29 to 32, wherein the fixing device is H-shaped for each load scaling transducer.
[0114] Aspect 34. The load measuring assembly as described in any one of Aspects 29 to 33, further comprising a plurality of mechanical fasteners, wherein for each load scaling transducer, each enlarged end defines a plurality of orifices, and each orifice receives a different one of the mechanical fasteners for securing the fixing device to the vehicle component.
[0115] Aspect 35. The load measuring assembly of any one of Aspects 29 to 34, further comprising, for each load scaling transducer, a first friction pad positioned between the first enlarged end and the vehicle component, and a second friction pad positioned between the second enlarged end and the vehicle component.
[0116] Aspect 36. The load measurement assembly of any one of Aspects 29 to 35, further comprising for each load scaling transducer a protective housing fixed to the mounting device and a communication module electrically connected to the sensor and positioned between the protective housing and the mounting device.
[0117] Aspect 37. The load measurement assembly as described in any one of Aspects 25 to 36, wherein the inner load scaling transducer is substantially the same as the outer load scaling transducer.
[0118] Aspect 38. The load measurement assembly as described in Aspect 11, wherein the vehicle component is configured to carry the vertical load in a four-point bend, the inner load scaling transducer includes a first sensor, the outer load scaling transducer includes a second sensor, and each load scaling transducer is fixed to the vehicle component to position the sensor away from the neutral axis of the vehicle component.
[0119] Aspect 39. The load measurement assembly as described in aspect 38, wherein each load scaling transducer includes an additional sensor, and the two sensors of each load scaling transducer are substantially identical to each other.
[0120] Aspect 40. The load measurement assembly as described in aspect 39, wherein the four sensors are substantially identical to each other.
[0121] Aspect 41. The load measuring assembly as described in any one of Aspects 38 to 40, wherein each sensor is configured to measure strain in the vertical and horizontal directions.
[0122] Aspect 42. The load measurement assembly of aspect 39, wherein each load scaling transducer includes a fixing device comprising a first enlarged end fixed to the vehicle component, a second enlarged end fixed to the vehicle component, and a bridging section extending from the first enlarged end to the second enlarged end, wherein one sensor of each load scaling transducer is fixed to an inner surface of the bridging section of the corresponding load scaling transducer, and another sensor of each load scaling transducer is fixed to an outer surface of the bridging section of the corresponding load scaling transducer.
[0123] Aspect 43. The load measurement assembly as described in aspect 42, wherein for each load scaling transducer, the thickness of the bridging section is less than the thickness of the first enlarged end and the second enlarged end.
[0124] Aspect 44. The load measurement assembly as described in any one of Aspects 42 to 43, wherein for each load scaling transducer, the height of the first expanding end is greater than the width of the first expanding end, the height of the second expanding end is greater than the width of the second expanding end, and the width of the bridging segment is greater than the height of the bridging segment.
[0125] Aspect 45. The load measurement assembly as described in any one of Aspects 42 to 44, wherein for each load scaling transducer, each of the first enlarged end, the second enlarged end, and the bridging segment is generally rectangular.
[0126] Aspect 46. The load measuring assembly as described in any one of Aspects 42 to 45, wherein the fixing device is H-shaped for each load scaling transducer.
[0127] Aspect 47. The load measuring assembly as described in any one of Aspects 42 to 46, further comprising a plurality of mechanical fasteners, wherein for each load scaling transducer, each enlarged end defines a plurality of orifices, and each orifice receives a different one of the mechanical fasteners for securing the fixing device to the vehicle component.
[0128] Aspect 48. The load measuring assembly of any one of Aspects 42 to 47, further comprising, for each load scaling transducer, a first friction pad positioned between the first enlarged end and the vehicle component, and a second friction pad positioned between the second enlarged end and the vehicle component.
[0129] Aspect 49. The load measurement assembly of any one of Aspects 42 to 48, further comprising for each load scaling transducer a protective housing fixed to the mounting device and a communication module electrically connected to the sensor and positioned between the protective housing and the mounting device.
[0130] Aspect 50. The load measurement assembly as described in any one of Aspects 38 to 49, wherein the inner load scaling transducer is substantially the same as the outer load scaling transducer.
[0131] Aspect 51. A load scaling transducer for use in combination with a vehicle component configured to bear a vertical load, the load scaling transducer comprising: a fixing device configured to be fixed to the vehicle component; a sensing strip configured to be at least partially positioned between the fixing device and the vehicle component and including a central segment having a thickness less than that of another segment of the sensing strip; a first sensor fixed to a surface of the central segment of the sensing strip facing the fixing device; and a second sensor fixed to a surface of the central segment of the sensing strip opposite to the fixing device.
[0132] Aspect 52. The load scaling transducer as described in aspect 51, wherein the fixing device defines a channel or groove configured to face the vehicle component, and at least a portion of the sensing strip is configured to be received within the channel or groove of the fixing device.
[0133] Aspect 53. The load scaling transducer as described in aspect 51, further comprising a plurality of pins extending from the fixing device to the sensing strip.
[0134] Aspect 54. The load scaling transducer as described in aspect 53, wherein the sensing strip defines a plurality of holes, each hole being configured to receive a portion of a different one of the pins.
[0135] Aspect 55. The load scaling transducer of any one of aspects 53 to 54, wherein the fixing device defines a plurality of holes, each hole being configured to receive a portion of a different one of the pins.
[0136] Aspect 56. The load scaling transducer as described in any one of Aspects 53 to 54, wherein each pin is integrally formed with the fixing device.
[0137] Aspect 57. The load scaling transducer as described in any one of Aspects 53 to 56, wherein the fixing device comprises a first fixing device member and a second fixing device member.
[0138] It will be understood that the above embodiments illustrate some applications of the principles of this subject matter. Many modifications can be made by those skilled in the art without departing from the spirit and scope of the claimed subject matter, including combinations of features separately disclosed or claimed herein. For these reasons, the scope of this disclosure is not limited to the above description, but rather as set forth in the appended claims, and it should be understood that the claims may refer to its features, including combinations of features separately disclosed or claimed herein.
Claims
1. A load measuring assembly for use in combination with a vehicle component configured to bear a vertical load, the load measuring assembly comprising: An inner load scaling transducer is fixed to the inner surface of the vehicle component. as well as An outer load scaling transducer is fixed to the outer surface of the vehicle component and aligned with the inner load scaling transducer.
2. The load measurement assembly of claim 1, wherein each load scaling transducer includes The fixing device includes A first enlarged end, the first enlarged end being fixed to the vehicle component. The second enlarged end, the second enlarged end being fixed to the vehicle component, and A bridging segment extending from the first enlarged end to the second enlarged end, wherein the thickness of the bridging segment is less than the thickness of the first enlarged end and the second enlarged end; A first sensor is fixed to the inner surface of the bridging section of the fixing device; as well as The second sensor is fixed to the outer surface of the bridging section of the fixing device.
3. The load measurement assembly of claim 2, wherein for each load scaling transducer The height of the first enlarged end is greater than the width of the first enlarged end. The height of the second enlarged end is greater than the width of the second enlarged end, and The width of the bridging segment is greater than the height of the bridging segment.
4. The load measurement assembly as claimed in any one of claims 2 to 3, wherein for each load scaling transducer, each of the first enlarged end, the second enlarged end, and the bridging segment is generally rectangular.
5. The load measurement assembly as claimed in any one of claims 2 to 4, wherein the fixing device is H-shaped for each load scaling transducer.
6. The load measuring assembly as claimed in any one of claims 2 to 5, further comprising a plurality of mechanical fasteners, wherein for each load scaling transducer Each enlarged end defines multiple orifices, and Each orifice receives a different one of the mechanical fasteners used to secure the fixing device to the vehicle component.
7. The load measurement assembly as claimed in any one of claims 2 to 6, further comprising, for each load scaling transducer: A first friction pad, the first friction pad being positioned between the first enlarged end and the vehicle component, and A second friction pad is positioned between the second enlarged end and the vehicle component.
8. The load measurement assembly of any one of claims 2 to 7, wherein for each load scaling transducer, each sensor is configured to measure strain in the vertical and horizontal directions.
9. The load measurement assembly of claim 8, wherein each load scaling transducer is fixed to the vehicle component to position the sensor away from the neutral axis of the vehicle component.
10. The load measurement assembly of any one of claims 2 to 7, wherein for each load scaling transducer, each sensor is configured to measure strain in two diagonal directions.
11. The load measurement assembly of claim 10, wherein each load scaling transducer is fixed to the vehicle component to position the sensor on the neutral axis of the vehicle component.
12. The load measurement assembly as claimed in any one of claims 2 to 11, further comprising, for each load scaling transducer A protective housing, the protective housing being fixed to the fixing device, and A communication module is electrically connected to the sensor and positioned between the protective housing and the fixing device.
13. The load measurement assembly as claimed in claim 1, wherein The vehicle component is configured to bear the vertical load in a three-point bend. The inner load scaling transducer includes a first sensor. The outer load scaling transducer includes a second sensor, and Each load scaling transducer is fixed to the vehicle component to position the sensor on the neutral axis of the vehicle component.
14. The load measurement assembly as claimed in claim 1, wherein The vehicle component is configured to bear the vertical load in a four-point bend. The inner load scaling transducer includes a first sensor. The outer load scaling transducer includes a second sensor, and Each load scaling transducer is fixed to the vehicle component to position the sensor away from the neutral axis of the vehicle component.
15. The load measurement assembly of claim 1, wherein each load scaling transducer includes A fixing device configured to be fixed to the vehicle component; A sensing strip, configured to be at least partially positioned between the fixing device and the vehicle component, and including a central section having a thickness less than that of another section of the sensing strip; A first sensor is fixed to the surface of the central segment of the sensing strip facing the fixing device; as well as The second sensor is fixed to the surface of the central segment of the sensing strip that is opposite to the fixing device.