Wireless portable force platform

Abstract

The utility model relates to force measuring platform technical field especially relates to a wireless portable force measuring platform, include: base, top setting fixing piece, force measuring platform sets up on the base, is located one side of fixing piece, force measuring platform includes bottom plate, force platform, sensing structure and wireless collection structure, bottom plate, bottom setting fine adjustment assembly, force platform, install on the bottom plate, and force platform opens the accommodation cavity, and the accommodation cavity opening is towards bottom plate, sensing structure sets up in the accommodation cavity, one end is connected with force platform fixedly, and the other end is connected with bottom plate fixedly, wireless collection structure installs in the accommodation cavity, gathers the signal of sensing structure, and communicates with external device, tension assembly is connected with fixing piece fixedly, the utility model reduces the overall thickness and quality of force measuring platform, is convenient for carrying, and hard pull test is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of force measuring platform technology, and in particular to a wireless portable force measuring platform. Background Technology

[0002] A force table is a device used to accurately measure force and torque, usually by measuring the force acting on its platform surface. In sports science, sports biomechanics, rehabilitation medicine and other fields, force tables are widely used to evaluate human motor performance, posture control ability, gait analysis and rehabilitation training effects. A typical force table system usually includes a force platform for the subject to stand or apply force, a force sensor for sensing physical force and converting it into an electrical signal, and a signal acquisition system for processing sensor signals and transmitting data.

[0003] In existing technologies, force measuring table structures include a heavy force-bearing platform, supported and leveled by mounting feet and adjustment components to ensure measurement accuracy. The signal acquisition system, typically a separate metal housing module, is externally located below or to the side of the force-bearing platform and connected to the force sensor via cables. This results in a bulky and heavy device. When performing tests such as balance tests or lower limb strength tests, it is often necessary to use two force measuring tables simultaneously to measure the force on each foot separately. However, the reliance on wired connections between the two force measuring tables and external equipment increases deployment complexity, and the presence of cables also affects ease of use.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the general background of this disclosure and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] In view of at least one of the above technical problems, this utility model provides a wireless portable force measuring platform, which adopts an integrated built-in signal acquisition system, main and auxiliary force measuring platform wireless communication technology and modular independent use design to solve the problems of bulky force measuring platform equipment, strong wired dependence and poor portability.

[0006] This utility model provides a wireless portable force measuring platform, comprising: The base has a fixing piece at the top; A force measuring platform is mounted on the base and located on one side of the fixing component; the force measuring platform includes a base plate, a force-bearing platform, a sensing structure, and a wireless acquisition structure. The base plate has a fine-tuning component at its bottom. The force-bearing platform is mounted on the base plate, and the force-bearing platform has a receiving cavity with the opening of the receiving cavity facing the base plate; The sensing structure is disposed in the receiving cavity, with one end fixedly connected to the force-bearing platform and the other end fixedly connected to the base plate; The wireless acquisition structure is installed inside the cavity, acquires the signal from the sensing structure, and communicates with external devices. The tension component is fixedly connected to the fastener.

[0007] Furthermore, the force measuring platform includes a main measuring platform and a secondary measuring platform, which are disposed on both sides of the fixing member. Both the main measuring platform and the secondary measuring platform include a base plate, a force-bearing platform, a sensing structure, and a wireless acquisition structure.

[0008] Furthermore, the wireless acquisition structure includes: A signal acquisition board is installed inside the receiving cavity, with one side extending through the side wall of the force-bearing platform; A Bluetooth communication component is installed on the signal acquisition board; An antenna is mounted on one side of the force-bearing platform; The radome is mounted on the force-bearing platform corresponding to the antenna.

[0009] Furthermore, the fine-tuning component includes several shock-absorbing and anti-slip rubber pads, which are evenly spaced along the bottom of the base plate.

[0010] Furthermore, the base is provided with a positioning post, and an O-ring is provided on the positioning post.

[0011] Furthermore, the force measuring platform has slots on both sides, and the slots are provided with arc surfaces that contact the O-rings.

[0012] Furthermore, the fastener is provided with a waist-shaped hole.

[0013] Furthermore, the tension assembly includes a stiff rope and a stiff rod, the stiff rope passing through the waist-shaped hole, and the stiff rod being slidably connected to the stiff rope.

[0014] Furthermore, the top of the force-bearing platform is provided with anti-slip patterns.

[0015] Furthermore, a sliding hole is provided on the rigid rod, through which the rigid rope passes.

[0016] The following technical effects can be achieved through the technical solution of this utility model: This invention integrates all electronic systems by eliminating external signal acquisition units, mounting feet, and mechanical adjustment components, reducing the thickness and overall weight of the force measuring platform. Handles on both sides facilitate transport. The built-in wireless acquisition structure allows each force measuring platform to operate independently and interact with external devices wirelessly, reducing wired connections and making the arrangement of the main and auxiliary force measuring platforms more flexible. The base and tension components can be quickly assembled into a mid-thigh deadlift testing system, reducing the bulky and heavy fixed frame and improving convenience. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the wireless portable force measuring platform in this embodiment of the present invention; Figure 2 This is a top view of the base plate in an embodiment of this utility model; Figure 3 This is a top view of the receiving cavity in an embodiment of the present invention; Figure 4 This is a schematic diagram of the antenna radome in an embodiment of the present invention; Figure 5 This is a schematic diagram of the bottom structure of the force measuring table in an embodiment of this utility model; Figure 6 This is a schematic diagram of the top structure of the force measuring platform in an embodiment of this utility model; Figure 7 This is a schematic diagram of the tension component structure in an embodiment of the present invention; Figure 8 This is a schematic diagram of the bottom structure of the wireless portable force measuring platform in an embodiment of this utility model.

[0019] Reference numerals: 1. Base; 11. Fixing component; 111. Waist-shaped hole; 12. Positioning post; 121. O-ring; 2. Force measuring platform; 21. Base plate; 211. Fine-tuning component; 2111. Rubber pad; 22. Force-bearing platform; 221. Receiving cavity; 222. Anti-slip pattern; 23. Sensing structure; 24. Wireless acquisition structure; 241. Signal acquisition board; 242. Bluetooth communication component; 243. Antenna; 244. Antenna cover; 25. Tension component; 251. Rigid rope; 252. Rigid rod; 2521. Sliding hole; 26. Main measuring platform; 27. Secondary measuring platform; 28. Groove; 281. Arc surface. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0022] This utility model provides a method such as Figures 1 to 7 The wireless portable force measuring platform shown includes: Base 1, with a fixing part 11 on the top; Force measuring platform 2 is mounted on base 1 and located on one side of fixing member 11; force measuring platform 2 includes base plate 21, force receiving platform 22, sensing structure 23 and wireless acquisition structure 24; Base plate 21, with a fine-tuning component 211 at the bottom; The force-bearing platform 22 is installed on the base plate 21. The force-bearing platform 22 has a receiving cavity 221 with the opening of the receiving cavity 221 facing the base plate 21. The sensing structure 23 is set in the receiving cavity 221, with one end fixedly connected to the force-bearing platform 22 and the other end fixedly connected to the base plate 21; The wireless acquisition structure 24 is installed in the receiving cavity 221 to acquire the signal of the sensing structure 23 and communicate with external devices. The tension component 25 is fixedly connected to the fastener 11.

[0023] The specific working principle of this utility model is as follows: First, place the base 1 at the test position, then place the force measuring platform 2 on the base 1. According to the test requirements, place the force measuring platform 2 around the fixing part 11. The fine adjustment component 211 installed on the base plate 21 of the force measuring platform 2, such as a soft rubber pad, can adaptively adjust the flatness of the force platform 22 to compensate for the slight unevenness that the ground may bring, and ensure that the force platform 22 above the base plate 21 is in a stable initial state. If a tensile test or a mid-thigh hard pull test is required, the tensile component 25 can be installed on the fixing part 11 on the base 1.

[0024] When the tester stands on the force platform 22 of the force measuring table 2, the load received by the force platform 22 is transmitted to the sensing structure 23 in the receiving cavity 221. Since one end of the sensing structure 23 is fixedly connected to the force platform 22 and the other end is fixedly connected to the base plate 21, the applied force will cause the sensing structure 23 to undergo physical deformation, such as the deformation of the strain gauge in a strain gauge sensor. At this time, the sensitive element inside the sensing structure 23 will convert the sensed physical deformation into an electrical signal, such as a change in resistance, voltage or charge. At this time, the wireless acquisition structure 24 will acquire this electrical signal in real time and perform a series of processing on the acquired raw electrical signal, including signal amplification, filtering to eliminate noise, and analog-to-digital conversion to convert the analog signal into digital force value data. Then, through the wireless communication unit used to connect with external devices, the digital force value data is transmitted in the form of a wireless signal. The tester can then obtain the corresponding test data through external devices such as a computer or mobile phone.

[0025] This embodiment reduces the overall weight and thickness of the force measuring platform 2 by adopting an integrated built-in signal acquisition system and wireless communication technology, thereby reducing wired dependence and improving the portability of the force measuring platform 2.

[0026] In some embodiments of this utility model, such as Figure 1 As shown, the force measuring platform 2 includes a main measuring platform 26 and a secondary measuring platform 27, which are set on both sides of the fixing member 11. Both the main measuring platform 26 and the secondary measuring platform 27 include a base plate 21, a force-bearing platform 22, a sensing structure 23 and a wireless acquisition structure 24.

[0027] Since both the main testing platform 26 and the auxiliary testing platform 27 are equipped with complete testing structures, they can be used independently to perform tests such as single-leg standing or single-movement tests to obtain mechanical data. Alternatively, the main testing platform 26 and the auxiliary testing platform 27 can work together. In tests requiring simultaneous bipedal measurement, each foot stands on one testing platform, and the tester applies force simultaneously to the force-bearing platforms 22 of both platforms. The sensing structures 23 of the two platforms independently sense the load borne by their respective force-bearing platforms 22 and generate corresponding electrical signals. Their respective wireless acquisition structures 24 synchronously acquire and process these signals. The wireless acquisition structures 24 of the main testing platform 26 and the auxiliary testing platform 27 establish a wireless connection with the same external device through their built-in wireless communication function. The software on the external device can receive and synchronously display the data from the two testing platforms, thereby calculating parameters that are crucial in bipedal testing, such as total force, difference between left and right forces, and trajectory of the pressure center.

[0028] Since the main and auxiliary test stations 27 are independent in structure and function and both have wireless capabilities, users can flexibly choose to use a single test station for simple testing or combine the two test stations for bipedal synchronous testing according to actual testing needs. The main and auxiliary test stations 27 do not require any cables for connection and data synchronization. They work together with external devices wirelessly, simplifying the preparation work before testing, avoiding cumbersome wiring, and greatly improving the convenience of force measurement testing.

[0029] In some embodiments of this utility model, such as Figure 3 and Figure 4 As shown, the wireless acquisition structure 24 includes: The signal acquisition board 241 is installed inside the receiving cavity 221, and one side passes through the side wall of the force-bearing platform 22. The signal acquisition board 241 is a printed circuit board that integrates electronic circuits such as analog front-end, microprocessor, memory and power management. A connector or interface can be set on one side and passes through the side wall of the force-bearing platform 22 to facilitate connection.

[0030] Bluetooth communication component 242 is installed on signal acquisition board 241; Bluetooth communication component 242 can be an integrated chip that conforms to the Bluetooth protocol and is responsible for pairing, connecting and transmitting data with external smart devices.

[0031] Antenna 243 is installed on one side of the force-bearing platform 22. Antenna 243 can be a flexible circuit board used to receive and amplify electromagnetic wave signals. It is attached to a pre-reserved position on the inside of the force-bearing platform 22 with adhesive. This design saves space and is easy to install. The radome 244, which corresponds to the antenna 243, is mounted on the force-bearing platform 22. It covers the mounting position of the internal antenna 243 and the position where the signal acquisition board 241 passes through the side wall of the force-bearing platform 22, protecting the internal parts from damage. At the same time, the radome 244 is made of non-metallic material, which will not shield or interfere with signal transmission, thus ensuring the quality of wireless communication.

[0032] In this embodiment, signal acquisition, processing and wireless communication functions are all integrated on a single circuit board and built into the cavity 221 of the force platform 22, making maximum use of the internal space and significantly reducing the overall volume and thickness of the force measuring platform 2.

[0033] In some embodiments of this utility model, such as Figure 2As shown, the fine-tuning component 211 includes several shock-absorbing and anti-slip rubber pads 2111, which are evenly spaced along the bottom of the base plate 21. The rubber pads 2111 can be made of materials with high coefficient of friction, good elastic deformation ability and wear resistance, such as natural rubber, neoprene rubber or silicone rubber; a preferred arrangement is to set one at each of the four corners of the base plate 21, thereby forming a stable support structure. When the force measuring table 2 is placed on the ground, the rubber pads 2111 contact the ground. If there is a slight unevenness in the ground, the tester will cause the rubber pads 2111 at higher support points to be subjected to greater pressure and produce greater compressive deformation, while the rubber pads 2111 at lower support points will deform less, adaptively compensating for the unevenness of the ground. Moreover, by replacing the support pads with thinner rubber pads 2111, the thickness of the force measuring table 2 is reduced, which facilitates the transportation and storage of the force measuring table 2.

[0034] In some embodiments of this utility model, such as Figure 5 and Figure 8 As shown, a positioning post 12 is provided on the base 1, and an O-ring 121 is provided on the positioning post 12. The positioning post 12 is preferably a cylindrical structure, and there are usually two or four of them, which are symmetrically arranged on the base 1 in the area corresponding to the placement position of the force measuring table 2. The positioning post 12 can be manufactured by integral molding with the base 1, or it can be fixedly installed on the base 1 by welding or threaded connection. The O-ring 121 is made of a material with good elasticity and wear resistance, and is fitted into the annular groove 28 or smooth cylindrical surface of the positioning post 12, which can effectively absorb and isolate the impact and vibration in dynamic testing.

[0035] Based on the above embodiments, such as Figure 5 As shown, the force measuring platform 2 has slots 28 on both sides, and arc surfaces 281 are provided in the slots 28, which contact the O-rings 121. The slots 28 on both sides of the force measuring platform 2 provide grip points for carrying the force measuring platform 2, making it easy to transport. The arc surfaces 281 in the slots 28 can form good contact and fit with the outer contour of the O-rings 121 fitted on the positioning post 12. When it is necessary to place the force measuring platform 2 on the base 1, simply align the arc surfaces 281 in the slots 28 on both sides of the force measuring platform 2 with and contact the O-rings 121 on the positioning post 12 on the base 1, and then put the force measuring platform 2 down. The arc surfaces 281 and the O-rings 121 cooperate to form a quick positioning and installation effect, which facilitates the use of the force measuring platform 2.

[0036] In some embodiments of this utility model, such as Figure 7 As shown, the fastener 11 is provided with a waist-shaped hole 111.

[0037] Based on the above embodiments, such as Figure 7As shown, the tension assembly 25 includes a stiff rope 251 and a stiff rod 252. The stiff rope 251 passes through the waist-shaped hole 111, and the stiff rod 252 is slidably connected to the stiff rope 251.

[0038] The rigid rope 251 can be made of a high-strength, low-elongation material, such as nylon rope or Dyneema rope. The rigid rope 251 is passed through the waist-shaped hole 111 on the fixing member 11 and then connected to the rigid rod 252. The tester stands on the force platform 22, holds the two sides of the rigid rod 252 with both hands, and pulls the rigid rod 252 upward. At this time, the force platform 22 will be subjected to a lifting reaction force greater than the tester's weight. This force is detected and collected by the sensing structure 23 and the wireless acquisition structure 24 to complete the force measurement.

[0039] By replacing the large and bulky equipment required for conventional leg deadlift tests with three lightweight accessories—fixture 11, deadlift rope 251, and deadlift rod 252—the system can be moved to any location along with the force table 2, improving its flexibility and portability.

[0040] In some embodiments of this utility model, such as Figure 6 As shown, the top of the force platform 22 is provided with anti-slip patterns 222. These patterns can be formed by machining, stamping, etching, or mold forming, and can have a certain depth and regularity of raised and recessed textures. The anti-slip patterns 222 can also adopt various pattern forms, such as staggered diamond-shaped protrusions, parallel wavy grooves, and evenly distributed circular protrusion arrays, as long as they can enhance the friction. The anti-slip patterns 222 can increase the surface roughness of the force platform 22, improve the static friction coefficient, thereby increasing the friction between the tester's feet and the top surface of the force platform 22, preventing the tester from sliding on the force platform 22, ensuring safety, and also ensuring that the data collected by the force measuring table 2 reflects the tester's vertical force.

[0041] In some embodiments of this utility model, such as Figure 7 As shown, a sliding hole 2521 is provided on the deadlift bar 252, through which the deadlift rope 251 passes. When the test subject performs a mid-thigh deadlift test, he / she holds the deadlift bar 252 with both hands and pulls upward. At this time, the pulling force is transmitted through the deadlift bar 252 to the deadlift rope 251 passing through the sliding hole 2521. Considering that the test subject's body posture may change during the lifting process, the sliding hole 2521 is used in conjunction with the deadlift rope 251. In this way, the deadlift bar 252 can change with the test subject's body rotation or tilt, maintaining a force-feeding angle friendly to the test subject's wrist, providing a more natural force application experience, and protecting the test subject's safety.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A wireless portable force measuring platform, characterized in that, include: The base (1) has a fastener (11) on top; A force measuring platform (2) is mounted on the base (1) and located on one side of the fixing member (11); the force measuring platform (2) includes a base plate (21), a force-bearing platform (22), a sensing structure (23) and a wireless acquisition structure (24); The base plate (21) has a fine-tuning component (211) at its bottom; The force-bearing platform (22) is installed on the base plate (21), and the force-bearing platform (22) has a receiving cavity (221) with the opening facing the base plate (21); The sensing structure (23) is disposed in the receiving cavity (221), with one end fixedly connected to the force-bearing platform (22) and the other end fixedly connected to the base plate (21); The wireless acquisition structure (24) is installed in the receiving cavity (221) to acquire the signal of the sensing structure (23) and communicate with external devices; The tension assembly (25) is fixedly connected to the fastener (11).

2. The wireless portable force measuring platform according to claim 1, characterized in that, The force measuring platform (2) includes a main measuring platform (26) and a secondary measuring platform (27), which are arranged on both sides of the fixing member (11). The main measuring platform (26) and the secondary measuring platform (27) each include a base plate (21), a force-bearing platform (22), a sensing structure (23), and a wireless acquisition structure (24).

3. The wireless portable force measuring platform according to claim 1, characterized in that, The wireless acquisition structure (24) includes: The signal acquisition board (241) is installed in the cavity (221) and one side passes through the side wall of the force-bearing platform (22); A Bluetooth communication component (242) is installed on the signal acquisition board (241); Antenna (243) is mounted on one side of the force-bearing platform (22); The radome (244) is mounted on the force-bearing platform (22) corresponding to the antenna (243).

4. The wireless portable force measuring platform according to claim 1, characterized in that, The fine-tuning component (211) includes several shock-absorbing and anti-slip rubber pads (2111), which are evenly spaced along the bottom of the base plate (21).

5. The wireless portable force measuring platform according to claim 1, characterized in that, The base (1) is provided with a positioning post (12), and an O-ring (121) is provided on the positioning post (12).

6. The wireless portable force measuring platform according to claim 5, characterized in that, The force measuring platform (2) has slots (28) on both sides, and an arc surface (281) is provided in the slot (28), which contacts the O-ring (121).

7. The wireless portable force measuring platform according to claim 1, characterized in that, The fastener (11) is provided with a waist-shaped hole (111).

8. The wireless portable force measuring platform according to claim 7, characterized in that, The tension assembly (25) includes a stiff rope (251) and a stiff rod (252), the stiff rope (251) passing through the waist-shaped hole (111), and the stiff rod (252) being slidably connected to the stiff rope (251).

9. The wireless portable force measuring platform according to claim 1, characterized in that, The top of the force-bearing platform (22) is provided with anti-slip patterns (222).

10. The wireless portable force measuring platform according to claim 8, characterized in that, The rigid rod (252) is provided with a sliding hole (2521), and the rigid rope (251) passes through the sliding hole (2521).

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