Lifting table lateral stability detection method based on mechanical arm mechanics and laser ranging

Abstract

The invention discloses a lifting table lateral stability detection method based on mechanical arm mechanics and laser ranging, and the method comprises the steps: applying different constant forces to the side surface of a table plate of a lifting table through a mechanical arm, measuring the lateral displacement of the table plate in combination with a laser ranging sensor, collecting force and displacement data in real time, and drawing a force-displacement curve for analysis. Stability rating is performed according to the applied force, the lateral displacement and the height of the lifting table. According to the method, the lateral displacement of the lifting table at different heights can be accurately measured, and the problems of poor accuracy and poor repeatability in traditional manual detection are solved. And through a standardized evaluation system, consumers are helped to know the stability of the lifting table more clearly, so that a more basis purchase decision is made. Meanwhile, the detection method provides an efficient and accurate tool for research and development personnel, assists design optimization, troubleshooting, quality verification and market competitiveness improvement, and promotes innovation and perfection of lifting table products.

Description

Technical Field

[0001] The present invention relates to the technical field of lifting table detection, and particularly to a method for detecting the lateral stability of a lifting table based on robotic arm mechanics and laser ranging, aiming to improve the accuracy and reliability of the stability evaluation of the lifting table. Background Art

[0002] With the continuous evolution of the modern office environment and the growing concern of people for health, the lifting table, as a flexible and efficient office furniture, has been widely used in families, offices and various workplaces, and its applicable groups cover all age groups. The core advantage of the lifting table lies in its height-adjustable feature, which can switch between sitting and standing postures according to the needs of users, so as to meet the comfort requirements in different working scenarios. In particular, standing office has been proven to help reduce health problems caused by long-term sitting, such as spinal diseases, cervical spondylosis, obesity, etc. Therefore, the lifting table is widely regarded as an important tool to improve the working environment and work efficiency.

[0003] However, in the actual use process of the lifting table, its stability has always been the core concern of consumers and manufacturers. Especially when the desktop height is adjusted to a relatively high position, the lateral stability of the table becomes particularly crucial. If the stability of the lifting table is insufficient, it will not only affect the user experience, but may even pose a safety hazard. Therefore, how to accurately and effectively measure the lateral stability of the lifting table has become the key to improving product quality, enhancing user experience and ensuring use safety.

[0004] Currently, the stability detection methods of most lifting tables on the market rely on manual tests. This method usually manually pushes the desktop and visually estimates the shaking amplitude of the desktop. However, manual testing has significant limitations, mainly reflected in the size and angle of the applied force and the subjective judgment differences of the testers, resulting in poor repeatability and reliability of the test results. In addition, the existing traditional detection methods lack a unified standard and evaluation system, making it impossible for each manufacturer to convey the stability data of the product in a professional and standardized manner, thus making it difficult for consumers to conduct effective product comparison and selection.

[0005] In summary, the current situation of the lifting table stability test urgently needs to be optimized, especially a more accurate, objective and standardized detection method is needed to meet the market demand for high-quality and reliable lifting tables. Summary of the Invention

[0006] To solve the above problems, the present invention provides a method for detecting the lateral stability of a lifting table based on robotic arm mechanics and laser ranging. This method combines robotic arm mechanics and laser ranging technologies, and through mechanical force application and displacement measurement, realizes high-precision detection of the lateral stability performance of the lifting table.

[0007] The technical solution provided by the present invention is as follows:

[0008] A method for detecting the lateral stability of a lifting table based on the mechanics of a robotic arm and laser ranging, comprising the following steps:

[0009] S1: Place the lifting table at the position to be measured, place the robotic arm integrated with a force sensor on the side of the tabletop to be measured, and align the laser ranging sensor vertically with the side of the tabletop to be measured;

[0010] S2: Set the height of the lifting table, start the robotic arm, calibrate the force sensor and the laser ranging sensor, and record the initial position of the tabletop;

[0011] S3: The robotic arm applies a constant force to the side of the tabletop, and the laser ranging sensor records the position of the tabletop after the constant force is applied;

[0012] S4: The control system synchronously collects the real-time data of the force sensor and the laser ranging sensor, calculates the offset according to the position difference of the tabletop, draws a force-displacement curve, and evaluates the lateral stability under different test conditions according to the constant force value, the offset and the height of the lifting table.

[0013] In some embodiments, the test height of the lifting table is 60 - 130 cm.

[0014] In some embodiments, the constant force applied by the robotic arm to the side of the tabletop is 10 - 100 N.

[0015] In some embodiments, it further includes rating the stability of the table based on the lateral displacement offset.

[0016] In some embodiments, the lateral displacement offset includes a sitting posture offset and a standing posture offset.

[0017] In some embodiments, the test height for the sitting posture offset is 60 - 80 cm, and the test height for the standing posture offset is 80 - 130 cm.

[0018] In summary, the beneficial effects of the present invention are:

[0019] (1) By integrating the robotic arm and the force sensor and combining the laser ranging technology, the present invention accurately measures the lateral offset at different heights, significantly improving the detection efficiency and reducing the manual error.

[0020] (2) The present invention provides stability tests in a variety of usage scenarios to meet the needs of different users, such as the sitting and standing postures of children and adults.

[0021] (3) Based on the force magnitude, displacement and tabletop height, the present invention establishes a scientific and standardized stability rating system.

[0022] (4) Through the precise detection and standardized evaluation system, the present invention enables consumers to more clearly understand the stability performance of the lifting table, make a more well-founded purchase decision, and at the same time enhance the market competitiveness of the product and the brand trust. Description of the Drawings

[0023] Figure 1 It is a schematic structural diagram of the detection device of the present invention;

[0024] Figure 2 It is a flowchart of the method of the present invention;

[0025] Figure 3 It is a force-displacement curve diagram of Example 1.

[0026] The reference numerals are as follows:

[0027] 1, lifting table; 2, robotic arm; 3, laser distance sensor; 4, force sensor; 5, robotic arm control cabinet. Detailed Embodiment

[0028] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments. The following embodiments are only used to explain the present invention and do not constitute a limitation to the protection scope of the present invention.

[0029] As Figure 1-2 shown, the present invention provides a method for detecting the lateral stability of a lifting table based on robotic arm mechanics and laser ranging, mainly including the following parts:

[0030] (1) The robotic arm 2 and the force sensor 4 are used to apply a predetermined constant force to the lifting table to be measured, and the force applied is monitored in real time through the force sensor 4.

[0031] (2) The laser distance sensor 3: is used to accurately measure the position data of the lifting table 1 under the action of force to ensure the accuracy of the displacement data.

[0032] (3) The data acquisition and analysis system: real-time collects the data signals from the force sensor 4 and the laser distance sensor 3, and generates a displacement curve through data analysis software to further analyze the lateral stability of the lifting table.

[0033] It includes the following steps:

[0034] S1: Place the lifting table at the position to be measured, integrate the robotic arm 2 with the force sensor 4 on the side of the tabletop to be measured, the robotic arm control cabinet 5 is used to control the robotic arm 2, the force sensor 4 and the laser distance sensor 3, the laser distance sensor 3 is vertically aligned with the side of the tabletop to be measured, and the laser ranging point is located on the side of the tabletop;

[0035] Specifically, first assemble the robotic arm 2 and integrate the force sensor 4 at the end of the robotic arm 2.

[0036] As an alternative implementation, the model of the robotic arm 2 adopted in this solution is Universal Robots UR10e, and the force sensor 4 is of Futek LCLD series.

[0037] Place the height-adjustable table on the ground, and place the frame of the robotic arm 2 on one side of the height-adjustable table so that the robotic arm 2 can apply a constant force in the horizontal direction to the tabletop from the side of the tabletop.

[0038] The laser range finder sensor 3 is fixed beside the table to be measured, arranged on the same side as the robotic arm 2, vertically aligned with the side of the tabletop to be measured, and can move vertically through a lifting mechanism. The laser ranging point is within the specified range of the center of the tabletop side.

[0039] As an alternative implementation, the laser range finder sensor 3 in this solution can adopt the Panasonic HG-C series, which is suitable for precise laser ranging applications and can ensure high stability and high-precision measurement.

[0040] S2: Set the height of the height-adjustable table to 60 - 130 cm, start the robotic arm 2 and the sensors on the robotic arm 2, calibrate the force sensor 4 and the laser range finder sensor 3, and record the initial position (i.e., the reference value) of the height-adjustable table 1.

[0041] S3: The robotic arm 2 applies a constant force of 10 - 100 N to the side of the tabletop, and the laser range finder sensor 3 records the position of the tabletop after the force is applied.

[0042] Specifically, to ensure the comprehensiveness of the detection, the height-adjustable table is tested at different heights to adapt to the stability evaluation of different scenarios. Usually, the typical sitting height and standing height are tested, and the common test heights are 60 - 130 cm, so as to simulate the actual use situations of sitting and standing postures. Applying different constant forces is applicable to simulating the mechanical responses of different scenarios. Different magnitudes of constant forces include but are not limited to 10 N, 40 N, 80 N, 100 N, and the force values are used to simulate the mechanical responses of different user behaviors (such as children's learning, office work, games, etc.).

[0043] Among them, the test height for sitting posture offset is 60 - 80 cm, and the test height for standing posture offset is 80 - 130 cm.

[0044] During this process, start the robotic arm 2 and the laser range finder sensor 3, and perform necessary calibration steps to ensure that the data read by the sensors is accurate.

[0045] After the height of the height-adjustable table is set, the robotic arm 2 applies a constant force to the side of the tabletop.

[0046] The force sensor 4 monitors the applied force in real time and ensures that the force is applied stably within a preset range. The laser range finder sensor 3 measures the position data of the lifting table 1 in real time under the action of this force.

[0047] S4: The control cabinet 5 synchronously collects the position data of the force sensor 4 and the laser range finder sensor 3, calculates the offset according to the position difference of the tabletop, draws the force-displacement curve, and evaluates the lateral stability under different test conditions based on the constant force value, the offset, and the height of the lifting table.

[0048] Next, we further demonstrate the technical solution of this application through embodiments.

[0049] Embodiment 1

[0050] Select the product to be tested and test the stability of the sitting height and standing height of the lifting table.

[0051] In this embodiment, according to the test requirements, the specific height settings are as follows:

[0052] Sitting height 70 cm, applying a constant force of 40 N, and the corresponding rating criteria are as follows:

[0053] Offset 0 - 0.1 mm, the stability is defined as excellent;

[0054] Offset 0.1 - 0.3 mm, the stability is defined as good;

[0055] Offset 0.3 - 0.5 mm, the stability is defined as average;

[0056] Offset 0.5 - 1 mm, the stability is defined as poor;

[0057] Sitting height 70 cm, applying a constant force of 80 N, and the corresponding rating criteria are as follows:

[0058] Offset 0.1 - 0.3 mm, the stability is defined as excellent;

[0059] Offset 0.3 - 0.5 mm, the stability is defined as good;

[0060] Offset 0.5 - 1 mm, the stability is defined as average;

[0061] Offset 1 - 1.5 mm, the stability is defined as poor;

[0062] Standing height 110 cm, applying a constant force of 40 N, and the corresponding rating criteria are as follows:

[0063] Offset 0.3 - 0.5 mm, the stability is defined as excellent;

[0064] Offset 0.5 - 1 mm, the stability is defined as good;

[0065] The offset is 1 - 1.5 mm, and the stability is defined as average.

[0066] The offset is 1.5 - 3 mm, and the stability is defined as poor.

[0067] When the standing height is 110 cm and a constant force of 80 N is applied, the corresponding rating criteria are as follows:

[0068] The offset is 0.5 - 1 mm, and the stability is defined as excellent.

[0069] The offset is 1 - 1.5 mm, and the stability is defined as good.

[0070] The offset is 1.5 - 3 mm, and the stability is defined as average.

[0071] The offset is 3 - 5 mm, and the stability is defined as poor.

[0072] Of course, in other embodiments, different evaluation criteria can be defined according to the requirements of the manufacturer or customer.

[0073] The following table shows the actual test data of the sitting height and the standing height.

[0074] I. The sitting height is 70 cm.

[0075] Applied constant force (N) Offset (mm) Stability rating 40N 0.16 Good 80N 0.29 Excellent

[0076] II. The standing height is 110 cm.

[0077] Applied constant force (N) Offset (mm) Stability rating 40N 0.4 Excellent 80N 1.1 Good

[0078] Finally, data processing and result analysis are carried out.

[0079] All the collected data will be processed by data analysis software. The specific analysis methods include:

[0080] Fitting the force-displacement curve to analyze the lateral stability of the lifting table 1;

[0081] Based on the test data of different usage scenarios, comprehensively evaluate the stability performance of the lifting table 1 to provide data support for the user experience.

[0082] The technical solution of this application enables consumers to more clearly understand the stability performance of the lifting table through accurate detection methods and a standardized evaluation system, so as to make a more well-founded purchase decision. This solution not only enhances the market competitiveness of the product but also improves consumers' trust in the product.

[0083] The above embodiments describe the specific process of the lateral stability detection of the lift table. This detection method can not only effectively evaluate the lateral stability of the lift table, but also provide a scientific basis for its quality assessment. During the test, the laser range finder sensor 3 and the force sensor 4 collect data in real time, and rate the stability of the lift table according to the maximum lateral offset at different heights.

[0084] For the convenience of users to query and compare, all detection data will be recorded and archived, including information such as the maximum offset at different heights, the constant force value applied, and the measurement environment for each product. A stability test report will be generated for each product for users' reference.

[0085] In summary, the present application applies force through the robotic arm and combines with the laser range finder sensor to measure displacement, achieving the precise quantification of the lateral stability of the lift table. This method takes into account the influence of different usage scenarios and lift table heights on stability and can meet the detection requirements in different environments.

[0086] The technical solution of the present application can accurately measure the lateral offset of the lift table at different heights by integrating the robotic arm, the force sensor and the laser range finder sensor, avoiding the inaccuracy and low repeatability problems in the traditional manual inspection method. At the same time, the standardized evaluation system enables consumers to more intuitively understand the stability of the lift table, thus providing a stronger basis in product comparison and purchase decisions.

[0087] In addition, this detection method provides an efficient and accurate tool for R & D personnel, supporting breakthroughs in design optimization, problem troubleshooting, quality verification and market competitiveness improvement, thus promoting the innovation and improvement of lift table products.

[0088] It should be noted that in the drawings or the main text of the specification, the implementation manners that are not illustrated or described are all forms known to those of ordinary skill in the art and are not described in detail. In addition, the above definitions of each element and method are not limited to the various specific structures, shapes or manners mentioned in the embodiments.

[0089] It should also be noted that the directional terms mentioned in the embodiments, such as "up", "down", "front", "back", "left", "right", "inside", "outside", etc., are only references to the directions in the drawings and are not used to limit the protection scope of the present application.

[0090] The foregoing description illustrates and describes preferred embodiments of the present invention. As previously mentioned, it should be understood that the present invention is not limited to the forms disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the above teachings or the skills or knowledge in the relevant field. Any alterations and changes made by those skilled in the art without departing from the spirit and scope of the present invention shall fall within the protection scope of the appended claims of the present invention.

Claims

1. A method for detecting the lateral stability of a lifting table based on the mechanics of a robotic arm and laser ranging, characterized in that, It includes the following steps: S1: Place the lifting table at the position to be measured, place the robotic arm integrated with a force sensor on the side of the tabletop to be measured, and align the laser distance sensor vertically with the side of the tabletop to be measured; S2: Set the height of the lifting table, start the robotic arm, calibrate the force sensor and the laser distance sensor, and record the initial position of the tabletop; S3: The robotic arm applies a constant force to the side of the tabletop, and the laser distance sensor records the position of the tabletop after the constant force is applied; S4: The control system synchronously collects the real-time data of the force sensor and the laser distance sensor, calculates the offset according to the position difference of the tabletop, draws the force-displacement curve, and evaluates the lateral stability under different test conditions according to the constant force value, the offset and the height of the lifting table.

2. The method for detecting the lateral stability of a lifting table based on the mechanics of a robotic arm and laser ranging according to claim 1, wherein The test height of the lifting table is 60 - 130 cm.

3. The lateral stability detection method of the lifting table based on the mechanics of the robotic arm and laser ranging according to claim 1, characterized in that, The constant force applied by the robotic arm to the side of the tabletop is 10 - 100 N.

4. The lateral stability detection method of the lifting table based on the mechanics of the robotic arm and laser ranging according to claim 1, characterized in that It also includes rating the stability of the table according to the lateral offset.

5. The lateral stability detection method of the lifting table based on the mechanics of the robotic arm and laser ranging according to claim 4, characterized in that, The lateral offset includes the sitting posture offset and the standing posture offset.

6. The lateral stability detection method of the lifting table based on the mechanics of the robotic arm and laser ranging according to claim 5, characterized in that, The test height of the sitting posture offset is 60 - 80 cm, and the test height of the standing posture offset is 80 - 130 cm.

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