Electronic scale device based on intelligent adjustment of protection screw and working method thereof

Abstract

The invention relates to the technical field of electronic scales, and discloses an electronic scale device based on intelligent adjustment of a protection screw and a working method thereof, and the device comprises a strain gauge electronic scale main body, a distance measurement module, a weighing module, a force application module, a driving mechanism and a central control system. The working method corresponds to the device. According to the application, through combination of the distance measuring module, the overload protection screw, the pull-up protection screw, the force application module, the driving mechanism and the central control system, real-time monitoring and dynamic adjustment of the deformation quantity of the sensor are realized; the problems that a traditional strain gauge electronic scale is poor in precision and low in efficiency in the aspect of screw protection adjustment can be effectively solved, the overall performance and reliability of the electronic scale are powerfully improved, and the electronic scale can well meet the urgent requirement for modern high-precision and automatic measurement.

Description

Technical Field

[0001] The present application relates to the technical field of electronic scales, and in particular to an electronic scale device based on intelligent adjustment of protective screws and a working method thereof. Background Art

[0002] Strain gauge electronic scales are widely used in industrial production, commercial trade and other fields. Their core component, the strain gauge sensor, is easily damaged due to overload or upward pull during long-term use, affecting measurement accuracy and service life. In the existing technology, the adjustment of protection screws (overload protection screws and upward pull protection screws) mainly relies on manual operation. This operation method requires manual adjustment through trial and error, which is time-consuming and labor-intensive, and difficult to adapt to the needs of modern automated production. Moreover, manual operation is easily limited by experience, and the position of the adjusted screws is difficult to accurately control the deformation amount (such as overload sinking amount, upward pull-up amount), resulting in unstable sensor protection effect. In addition, the existing technology lacks a systematic solution for the adjustment of the upward pull protection screw, and cannot effectively deal with the damage to the sensor caused by upward pull (such as the user pulling the scale plate). It lacks both accuracy and automation means, and is difficult to meet the stringent requirements of modern high-precision measurement and automated production.

[0003] Therefore, traditional electronic scale technology has the problems of low adjustment efficiency and poor accuracy of the electronic scale protection screws. Summary of the Invention

[0004] The purpose of this application is to provide an electronic scale device based on intelligent adjustment of protective screws and a working method thereof to solve the technical problems raised in the above background technology.

[0005] To achieve the above objectives, this application discloses the following technical solutions:

[0006] In a first aspect, the present application discloses an electronic scale device based on intelligent adjustment of protective screws, comprising:

[0007] The strain gauge electronic scale body includes a sensor bracket, a strain gauge sensor, an overload protection screw, and a pull-up protection screw; the sensor bracket includes an upper bracket and a lower bracket spaced apart, and the strain gauge sensor is installed between the upper bracket and the lower bracket; the overload protection screws are uniformly distributed on the lower bracket and their upper portions are threadedly connected to the upper bracket; the pull-up protection screw passes through the lower bracket and its upper portion is threadedly connected to the upper bracket;

[0008] A distance measuring module is provided above the main body of the strain gauge electronic scale;

[0009] a weighing module, electrically connected to the strain gauge sensor, for converting electrical signals into weight values ​​and transmitting the weight values ​​to a central control system;

[0010] a force applying module, disposed on the upper bracket, for applying pressure or tension to the sensor bracket;

[0011] A driving mechanism connected to the overload protection screw and the pull-up protection screw;

[0012] The central control system is configured as follows: electrically connected to the high-precision laser ranging module to obtain the displacement changes of the upper bracket under different loads in real time through the ranging module; electrically connected to the force application module to control the force application size; electrically connected to the weighing module to obtain the weight value; electrically connected to the driving mechanism to control the driving mechanism to adjust the position of the overload protection screw and the pull-up protection screw based on a preset algorithm to control the deformation of the strain gauge sensor.

[0013] Preferably, the step of the central control system controlling the deformation amount of the strain gauge sensor comprises:

[0014] Receiving the displacement data of the upper support and the weight value of the weighing module collected by the distance measurement module;

[0015] Calculating the adjustment amount of the overload protection screw or the pull-up protection screw under the current load according to a preset algorithm;

[0016] A control instruction is sent to the driving mechanism to control the overload protection screw or the pull-up protection screw to rotate until the weight value or the displacement value reaches the target value.

[0017] Preferably, the preset algorithm includes:

[0018] Overload protection adjustment algorithm: When the weight value reaches the preset overload pressure, the adjustment amount is calculated, the rotation direction and speed of the driving mechanism are dynamically optimized, and the position of the overload protection screw is adjusted to limit the downward deformation of the strain gauge sensor;

[0019] Pull-up protection adjustment algorithm: When the load value reaches the preset pull-up force, the adjustment amount is calculated, the rotation direction and speed of the drive mechanism are dynamically optimized, and the position of the pull-up protection screw is controlled in combination with the displacement change range to limit the pull-up deformation of the strain gauge sensor.

[0020] Preferably, in the overload protection adjustment algorithm, the dynamic optimization of the rotation direction and speed of the drive mechanism and the adjustment of the position of the overload protection screw include:

[0021] When the weight value reaches the overload pressure for the first time, the driving mechanism rotates at high speed to quickly adjust the position of the overload protection screw, so that the downward pressure deformation of the strain gauge sensor is reduced to 70-80% of the target deformation;

[0022] When the downward pressure deformation amount of the strain gauge sensor approaches the target deformation amount, the driving mechanism switches to low-speed rotation to perform fine adjustment so that the downward pressure deformation amount is within the target range.

[0023] Preferably, in the pull-up protection adjustment algorithm, the dynamic optimization of the rotation direction and speed of the driving mechanism and the control of the position of the pull-up protection screw in combination with the displacement variation range to limit the pull-up deformation of the strain gauge sensor include:

[0024] When the weight value reaches the pull-up force for the first time, the driving mechanism quickly adjusts the position of the pull-up protection screw at a high speed, so that the pull-up deformation of the strain gauge sensor is reduced to 70-80% of the target deformation;

[0025] When the pull-up deformation amount of the strain gauge sensor approaches the target deformation amount, the driving mechanism switches to low-speed rotation to perform fine adjustment so that the pull-up deformation amount is within the target range.

[0026] Preferably, the dynamic optimization of the rotation direction and speed of the driving mechanism further includes:

[0027] The distance measurement module monitors the displacement changes of the strain gauge sensor in real time, and feeds the data back to the central control system to dynamically correct the rotation angle and direction of the driving mechanism.

[0028] Preferably, the driving mechanism is a controllable electric screwdriver for adjusting the screw positions of the overload protection screw and the pull-up protection screw with micron-level precision.

[0029] Preferably, the force application module includes standard weights for simulating overload scenarios and a hanging scale for simulating pull-up scenarios.

[0030] Preferably, the distance measuring module is a high-precision laser rangefinder, including the electronic scale device based on intelligent adjustment of the protection screw as described above, and further comprising:

[0031] Loading a preset load and collecting data: applying a preset load to the strain gauge electronic scale body through the force application module, the preset load including overload pressure or upward pulling force; collecting the current weight value through the strain gauge sensor, and monitoring the displacement data of the upper bracket under different preset loads in real time through the distance measurement module, and transmitting the weight value and the displacement data to the central control system;

[0032] Calculating the adjustment amount of the protection screw: the central control system calculates the adjustment amount of the overload protection screw or the pull-up protection screw position required to be adjusted under the current preset load based on the weight value and the displacement data based on a preset algorithm;

[0033] Dynamically adjusting the protection screw: the central control system sends a control instruction to the driving mechanism to drive the overload protection screw or the pull-up protection screw to rotate, thereby adjusting the distance between the upper support and the lower support;

[0034] Real-time feedback and optimization: During the adjustment process, the distance measurement module continuously monitors the displacement changes of the upper bracket and feeds back the real-time data to the central control system. Based on the feedback data, the central control system dynamically optimizes the rotation direction and speed of the drive mechanism to correct the adjustment deviation, so that the deformation of the strain gauge sensor is within the target range.

[0035] Verify the adjustment accuracy: After the adjustment is completed, test the weight or displacement value of the strain gauge sensor by applying a verification load to see if it meets the preset standard. If the test result meets the requirements, the adjustment is confirmed to be qualified. If not, repeat the above adjustment steps until the standard is met.

[0036] In a second aspect, the present application discloses a method for operating an electronic scale based on intelligent adjustment of a protective screw, comprising the electronic scale device based on intelligent adjustment of a protective screw as described above, and further comprising:

[0037] Loading a preset load and collecting data: applying a preset load to the strain gauge electronic scale body through the force application module, the preset load including overload pressure or upward pulling force; collecting the current weight value through the strain gauge sensor, and monitoring the displacement data of the upper bracket under different preset loads in real time through the distance measurement module, and transmitting the weight value and the displacement data to the central control system;

[0038] Calculating the adjustment amount of the protection screw: the central control system calculates the adjustment amount of the overload protection screw or the pull-up protection screw position required to be adjusted under the current preset load based on the weight value and the displacement data based on a preset algorithm;

[0039] Dynamically adjusting the protection screw: the central control system sends a control instruction to the driving mechanism to drive the overload protection screw or the pull-up protection screw to rotate, thereby adjusting the distance between the upper support and the lower support;

[0040] Real-time feedback and optimization: During the adjustment process, the distance measurement module continuously monitors the displacement changes of the upper bracket and feeds back the real-time data to the central control system. Based on the feedback data, the central control system dynamically optimizes the rotation direction and speed of the drive mechanism to correct the adjustment deviation, so that the deformation of the strain gauge sensor is within the target range.

[0041] Verify the adjustment accuracy: After the adjustment is completed, test the weight or displacement value of the strain gauge sensor by applying a verification load to see if it meets the preset standard. If the test result meets the requirements, the adjustment is confirmed to be qualified. If not, repeat the above adjustment steps until the standard is met.

[0042] Beneficial effects: The electronic scale device based on intelligent adjustment of the protection screw and the working method of the present application realize real-time monitoring and dynamic adjustment of the sensor deformation through the combination of the ranging module, the overload protection screw, the pull-up protection screw, the force module, the drive mechanism and the central control system. It can effectively resolve the problems of poor accuracy and low efficiency faced by traditional strain gauge electronic scales in adjusting the protection screws, effectively improve the overall performance and reliability of the electronic scale, and enable the electronic scale to adapt well to the urgent needs of modern high-precision and automated measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0044] Figure 1 A schematic structural diagram of an electronic scale device based on intelligent adjustment of protective screws provided in an embodiment of the present application;

[0045] Figure 2 Schematic diagram of the positions of the strain gauge sensor, lower bracket, overload protection screw and pull-up protection screw under the explosion perspective provided in an embodiment of the present application.

[0046] Figure numerals: 11, upper bracket; 12, lower bracket; 2, strain gauge sensor; 3, overload protection screw; 4, pull-up protection screw; 5, force module; 6, distance measurement module. DETAILED DESCRIPTION

[0047] The following is a clear and complete description of the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0048] In this document, the term "comprising" is intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0049] In a first aspect, this embodiment provides an electronic scale device based on intelligent adjustment of protection screws, which aims to accurately adjust the overload protection screw 3 and the pull-up protection screw 4 of the electronic scale through automated means to protect the strain gauge sensor 2 from damage caused by overload or pull-up force, while improving the measurement accuracy and long-term reliability of the electronic scale. Specifically, Figure 1 and 2 As shown, the device includes:

[0050] Component 1: The main body of the strain gauge electronic scale includes a sensor bracket, a strain gauge sensor 2, an overload protection screw 3, and a pull-up protection screw 4. The sensor bracket comprises an upper bracket 11 and a lower bracket 12 spaced apart from each other. The upper and lower brackets 11, 12 are made of high-strength metal, and the strain gauge sensor 2 is mounted between the upper and lower brackets 11, 12. The top of the strain gauge sensor 2 is threadedly connected to the upper bracket 11. The overload protection screws 3 are evenly distributed on the lower bracket 12, with their upper portions threadedly connected to the upper bracket 11. The pull-up protection screw 4 passes through the lower bracket 12, with its upper portion threadedly connected to the upper bracket 11. In this embodiment, the overload protection screws 3 are located at the four corners of the lower bracket 12, and the pull-up protection screw 4 is located near one end of the strain gauge sensor 2.

[0051] Component 2: Distance measuring module 6, located above the strain gauge electronic scale body, monitors the displacement of the upper bracket 11 under varying loads in real time, providing distance data with millimeter-level accuracy. To ensure accurate displacement measurement, a pair of distance measuring modules 6 are preferably aligned with the sensor bracket via a fixed bracket. Distance measuring modules 6 are high-precision laser rangefinders.

[0052] Component 3: A weighing module (not shown), electrically connected to the strain gauge sensor 2, is used to convert the electrical signal into a weight value and transmit it to the central control system. The weighing module can be any of the existing technologies and is the core component that converts the electrical signal output by the strain gauge sensor into a readable weight value. Through signal processing and algorithm calculation, it converts the mechanical deformation sensed by the sensor into user-readable weight data and transmits it to the central control system. Generally, the weighing module includes a signal conditioning circuit and an analog-to-digital converter, where the signal conditioning circuit includes an amplifier and a filter. The amplifier is used to amplify the weak electrical signal (millivolt level) output by the strain gauge sensor to a processable range (such as 0-5V). The filter is used to eliminate the influence of environmental noise (such as electromagnetic interference and vibration noise) on the signal. The analog-to-digital converter is used to convert the amplified analog electrical signal into a digital signal for processing and analysis by the central controller.

[0053] Component 4: Force application module 5, mounted on the upper bracket 11, applies pressure or tension to the sensor bracket. In this embodiment, four force application modules 5 are located at the four corners of the upper bracket 11, corresponding to the overload protection screws 3. The force application modules 5 include standard weights for simulating overload scenarios and a hanging scale for simulating pull-up scenarios. The standard weights are used to apply a standard weight exceeding 30% of the full scale to simulate an overload scenario, while the hanging scale is used to apply a pull-up force equivalent to 20% of the full scale by lifting the upper bracket 12 to simulate a pull-up scenario.

[0054] Component 5: A drive mechanism, connected to the overload protection screw 3 and the pull-up protection screw 4. The drive mechanism can be a controllable electric screwdriver that adjusts the position of the overload protection screws 3 and the pull-up protection screws 4 with micron-level precision. The drive mechanism independently adjusts the position of the overload protection screws 3 at each corner of the strain gauge electronic scale body, ensuring consistent displacement of the four corners of the strain gauge sensor 2.

[0055] The central control system is configured as follows: electrically connected to the high-precision laser ranging module 6 to obtain the displacement changes of the upper bracket 11 under different loads in real time through the ranging module 6; electrically connected to the force application module 5 to control the force application size; electrically connected to the weighing module to obtain the weight value; electrically connected to the driving mechanism to control the driving mechanism to adjust the position of the overload protection screw 3 and the pull-up protection screw 4 based on a preset algorithm to control the deformation of the strain gauge sensor 2.

[0056] As a feasible implementation of this embodiment, the steps of the central control system controlling the deformation amount of the strain gauge sensor 2 include:

[0057] Step 1: Receive the displacement data of the upper bracket 11 collected by the distance measurement module 6 and the weight value of the weighing module.

[0058] Step 2: Calculate the adjustment amount of the overload protection screw 3 or the pull-up protection screw 4 under the current load according to a preset algorithm.

[0059] Step 3: Send a control instruction to the driving mechanism to control the overload protection screw 3 or the pull-up protection screw 4 to rotate until the weight value or the displacement value reaches the target value.

[0060] Furthermore, the preset algorithm includes:

[0061] Overload protection adjustment algorithm: When the weight reaches the preset overload pressure, the adjustment amount is calculated, the rotation direction and speed of the drive mechanism are dynamically optimized, and the position of the overload protection screw 3 is adjusted to limit the downward deformation of the strain gauge sensor 2;

[0062] Pull-up protection adjustment algorithm: When the load value reaches the preset pull-up force, the adjustment amount is calculated, the rotation direction and speed of the drive mechanism are dynamically optimized, and the position of the pull-up protection screw 4 is controlled in combination with the displacement change range to limit the pull-up deformation of the strain gauge sensor 2.

[0063] It is feasible to dynamically optimize the rotation direction and speed of the driving mechanism and adjust the position of the overload protection screw 3 in the overload protection adjustment algorithm, including:

[0064] When the weight value reaches the overload pressure for the first time, the driving mechanism rotates at a high speed (e.g., 80-120 rpm) to quickly adjust the position of the overload protection screw 3 so that the downward pressure deformation of the strain gauge sensor 2 is reduced to 70-80% of the target deformation;

[0065] When the downward deformation of the strain gauge sensor 2 is close to the target deformation (such as the residual deviation is less than 0.05mm), the driving mechanism switches to low-speed rotation (such as 5-10rpm) for fine-tuning so that the downward deformation is within the target range (such as ±0.01mm).

[0066] Similarly, in the pull-up protection adjustment algorithm, the rotation direction and speed of the driving mechanism are dynamically optimized, and the position of the pull-up protection screw 4 is controlled in combination with the displacement variation range to limit the pull-up deformation of the strain gauge sensor 2, including:

[0067] When the weight value reaches the pull-up force for the first time, the driving mechanism rotates at a high speed (e.g., 80-120 rpm) to quickly adjust the position of the pull-up protection screw 4 so that the pull-up deformation of the strain gauge sensor 2 is reduced to 70-80% of the target deformation;

[0068] When the pull-up deformation of the strain gauge sensor 2 is close to the target deformation (such as the residual deviation is less than 0.05mm), the driving mechanism switches to low-speed rotation (such as 5-10rpm) for fine-tuning so that the pull-up deformation is within the target range (such as ±0.01mm).

[0069] Furthermore, the dynamic optimization of the rotation direction and speed of the driving mechanism also includes:

[0070] The distance measurement module 6 monitors the displacement changes of the strain gauge sensor 2 in real time, and feeds the data back to the central control system to dynamically correct the rotation angle and direction of the drive mechanism.

[0071] Based on the above preset algorithm, in step 2, the adjustment amount is determined through the following steps and logic:

[0072] (1) Data collection and target value setting

[0073] (11) Real-time data collection:

[0074] Weight data: The weight signal is transmitted to the central control system through the strain gauge sensor 2 to obtain the weight value of the current load in real time.

[0075] Displacement data: The distance measurement module 6 monitors the displacement changes of the sensor bracket (such as the amount of sinking or stretching of the upper bracket 11) in real time.

[0076] (12) Target value setting:

[0077] Overload protection target: When the weight value exceeds 20% of the rated range (i.e., 20% overload), the overload protection screw 3 needs to be adjusted to reduce the downward deformation of the strain gauge sensor 2 to the target value (for example, when the overload is 30%, the sinking amount is 1.703mm, which needs to be reduced to 1.572mm after adjustment).

[0078] Pull-up protection target: When the load value reaches 10% of the rated range, the pull-up protection screw 4 needs to be adjusted to control the pull-up deformation of the strain gauge sensor 2 within a reasonable range (for example, the adjusted stretching amount needs to be within the displacement range corresponding to 10%-20% of the range).

[0079] (2) Calculation logic of adjustment amount

[0080] (21) Calculation of the adjustment amount of overload protection screw 3

[0081] step:

[0082] Loading overload pressure: applying a load exceeding 30% of the rated range to the sensor bracket through the force module 5 (for example, a 15kg table scale is loaded with 19.5kg).

[0083] Measuring the initial displacement: the distance measurement module 6 records the displacement value at this time (eg, 1.703 mm).

[0084] Calculate the target displacement: Based on the 20% overload target of the rated range (1.572 mm), calculate the displacement that needs to be reduced (1.703 mm - 1.572 mm = 0.131 mm).

[0085] Convert to screw adjustment:

[0086] Using the preset displacement-screw rotation relationship (for example, each screw rotation changes the bracket spacing by 0.1 mm), the number of rotations required is calculated (0.131 mm ÷ 0.1 mm / rotation ≈ 1.31 rotations).

[0087] Adjustment direction: If you need to reduce the amount of sinking, turn the overload protection screw 3 clockwise to shorten the bracket spacing.

[0088] (22) Calculation of the adjustment amount of the pull-up protection screw 4

[0089] Loading pull force: Apply a pull force of 20% of the rated range through the force application module 5 (for example, a 15kg table scale applies a 3kg pull force).

[0090] Measuring the initial displacement: the distance measuring module 6 records the stretching amount at this time (for example, the stretching amount is 0.6 mm).

[0091] Calculate the target displacement: According to the pull-up protection requirements (the stretching amount needs to be controlled within the range of 10%-20%), adjust the position of the pull-up protection screw 4 so that the stretching amount is within a reasonable range (for example, the stretching amount needs to be reduced to 0.5mm after adjustment).

[0092] Convert to screw adjustment:

[0093] The number of turns required is calculated based on the preset displacement-screw rotation relationship (for example, 0.6 mm - 0.5 mm = 0.1 mm, which requires 1 turn).

[0094] Adjustment direction: If you need to reduce the stretching amount, turn the pull-up protection screw 4 counterclockwise to increase the bracket spacing.

[0095] (3) Specific implementation of the preset algorithm

[0096] (31) Displacement-weight mapping model:

[0097] The linear or nonlinear relationship between displacement and weight is established through experimental data (for example, the full-scale sinking amount is 1.31mm, and the overload is 30% is 1.703mm), which is used to predict the deformation under different loads.

[0098] (32) Dynamic optimization algorithm:

[0099] High-speed adjustment stage: When the displacement deviation is large (such as deviation > 0.1mm), the drive mechanism rotates the screw at high speed (80-120rpm) to quickly approach the target value.

[0100] Low-speed fine-tuning stage: When the displacement deviation is small (such as deviation <0.05mm), the drive mechanism switches to low speed (5-10rpm) and is precisely adjusted through a successive approximation algorithm (such as the binary method).

[0101] (33) Closed-loop feedback control:

[0102] The distance measurement module 6 continuously monitors the displacement changes and feeds the data back to the central control system in real time.

[0103] The central control system dynamically modifies the rotation direction and speed of the drive mechanism based on real-time feedback (for example, if the displacement decreases too quickly, the rotation speed is reduced).

[0104] Based on the above, the electronic scale device based on intelligent adjustment of the protective screw in this embodiment realizes real-time monitoring and dynamic adjustment of the deformation variable of the strain gauge sensor 2 through the combination of a high-precision laser rangefinder and a central control system. Specifically, traditional manual adjustment relies on experience and judgment, and it is difficult to achieve micron-level accuracy. This solution uses a laser rangefinder to feedback displacement data in real time, combined with a central control system to dynamically optimize the rotation direction and speed of the drive mechanism, significantly improving the adjustment accuracy and solving the problem of insufficient manual adjustment accuracy; the protective screw is positioned efficiently and accurately through a staged adjustment algorithm (i.e., a high-speed adjustment stage and a low-speed adjustment stage). Specifically, for overload and pull-up scenarios, a high-speed rapid response + low-speed fine-tuning strategy is adopted. During the first adjustment, a high-speed rotation of 80-120rpm is used to quickly approach the target deformation variable, and then it is switched to a low-speed fine-tuning of 5-10rpm to ensure that the deformation variable of the strain gauge sensor 2 is controlled within the range of ±0.01mm, taking into account both efficiency and accuracy, and solving the problem of long adjustment time and poor consistency of traditional methods; the adjustment process is realized through closed-loop control logic Real-time optimization and deviation correction. Specifically, the central control system continuously receives feedback data from the distance measurement module 6 and the weighing module 5, dynamically corrects the rotation parameters of the drive mechanism (such as direction and speed), and forms a closed-loop process of monitoring, calculation, adjustment and verification, effectively avoiding adjustment deviations caused by over-adjustment or under-adjustment, and significantly improving the system stability; through the synchronous adjustment of the four corners and multi-scene adaptation, the overall performance of the electronic scale is balanced and optimized. Specifically, the protective screws at the four corners of the sensor bracket are loaded with preset loads in turn and adjusted independently to ensure that the four-corner variables are uniform and consistent, while covering the two typical scenarios of downward pressure and upward pull, solving the problem of uneven force on the sensor caused by the traditional method that only focuses on unilateral adjustment; through the combination of a controllable electric screwdriver and a force module 5, automated operation with micron-level precision is achieved. Specifically, a high-precision electric screwdriver (such as 5-120rpm adjustable) is used instead of manual tools, combined with standard weights and hanging scales to simulate different load conditions, to achieve automatic and controllable adjustment of the protective screw position, significantly improving the adjustment efficiency and solving the problem of low manual operation efficiency.

[0105] In a second aspect, the present embodiment provides an operating method of an electronic scale based on intelligent adjustment of a protective screw, comprising the electronic scale device based on intelligent adjustment of a protective screw as described above, and further comprising:

[0106] Loading a preset load and collecting data: A preset load is applied to the strain gauge electronic scale body through the force application module 5. The preset load includes an overload pressure (30% of the rated range) or an upward pull force (20% of the rated range). The current weight value is collected through the strain gauge sensor 2, and the displacement data of the upper bracket 11 under different preset loads is monitored in real time through the distance measurement module 6. The weight value and displacement data are transmitted to the central control system;

[0107] Calculating the adjustment amount of the protection screw: The central control system calculates the adjustment amount of the overload protection screw 3 or the pull-up protection screw 4 position required under the current preset load based on the preset algorithm and the weight value and displacement data;

[0108] Dynamic adjustment of the protection screw: The central control system sends a control instruction to the driving mechanism to drive the overload protection screw 3 or the pull-up protection screw 4 to rotate, thereby adjusting the distance between the upper bracket 11 and the lower bracket 12;

[0109] Real-time feedback and optimization: During the adjustment process, the distance measurement module 6 continuously monitors the displacement changes of the upper bracket 11 and feeds real-time data back to the central control system. Furthermore, the central control system dynamically optimizes the rotation direction and speed of the drive mechanism based on the feedback data to correct adjustment deviations, ensuring that the deformation of the strain gauge sensor 2 is within the target range.

[0110] Verify adjustment accuracy: After the adjustment is completed, add a verification load (such as a 20% overload weight or 50% overload force) to test whether the weight value or displacement value of the strain gauge sensor meets the preset standard. If the test result meets the requirements, the adjustment is confirmed to be qualified. If not, repeat the above adjustment steps until the standard is met.

[0111] It should be noted that the working method of the electronic scale based on intelligent adjustment of the protective screws in this embodiment is applicable to the electronic scale based on intelligent adjustment of the protective screws as described above, and the two correspond to each other. Therefore, the parts that are not described in detail in the working method of the electronic scale based on intelligent adjustment of the protective screws in this embodiment (including but not limited to technical effects and specific implementation principles, etc.) can be referred to the relevant description in the electronic scale based on intelligent adjustment of the protective screws, and this text will not go into details here.

[0112] In the embodiments provided herein, it should be understood that the embodiments described herein can be implemented in hardware, software, firmware, middleware, code, or any appropriate combination thereof. For hardware implementation, the processor can be implemented in one or more of the following units: an application-specific integrated circuit (ASIC), a digital signal processor (DSP), a digital signal processing device (DSPD), a programmable logic device (PLD), a field programmable gate array (FPGA), a processor, a controller, a microcontroller, a microprocessor, other electronic units designed to implement the functions described herein, or a combination thereof. For software implementation, part or all of the processes of the embodiments can be completed by instructing the relevant hardware through a computer program. When implemented, the above program can be stored in a computer-readable storage medium or transmitted as one or more instructions or codes on a computer-readable storage medium. Computer-readable storage media include computer storage media and communication media, wherein the communication media include any medium that facilitates the transmission of a computer program from one place to another. The storage medium can be any available medium that a computer can access. The computer-readable storage medium can include, but is not limited to, RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer.

[0113] Finally, it should be noted that the above is only a preferred embodiment of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. An electronic scale device based on intelligent adjustment of protective screws, characterized in that: include: The strain gauge electronic scale body comprises a sensor bracket, a strain gauge sensor (2), an overload protection screw (3) and a pull-up protection screw (4); the sensor bracket comprises an upper bracket (11) and a lower bracket (12) arranged at a distance, and the strain gauge sensor (2) is installed between the upper bracket (11) and the lower bracket (12); the overload protection screw (3) is evenly distributed on the lower bracket (12) and its upper part is threadedly connected to the upper bracket (11); the pull-up protection screw (4) passes through the lower bracket (12) and its upper part is threadedly connected to the upper bracket (11); A distance measuring module (6) is arranged above the strain gauge electronic scale body; a weighing module electrically connected to the strain gauge sensor (2) and used for converting the electrical signal into a weight value and transmitting the weight value to a central control system; A force applying module (5) is provided on the upper support (11) and is used to apply pressure or tension to the sensor support; A driving mechanism connected to the overload protection screw (3) and the pull-up protection screw (4); A central control system is configured to: be electrically connected to the high-precision laser distance measurement module (6) to obtain the displacement change of the upper support (11) under different loads in real time through the distance measurement module (6); and be electrically connected to the force application module (5) to control the magnitude of the force application; It is electrically connected to the weighing module to obtain a weight value; and is electrically connected to the driving mechanism to control the driving mechanism to adjust the positions of the overload protection screw (3) and the pull-up protection screw (4) based on a preset algorithm to control the deformation amount of the strain gauge sensor (2).

2. The electronic scale device based on intelligent adjustment of protection screws according to claim 1 is characterized in that: The step of the central control system controlling the deformation amount of the strain gauge sensor (2) comprises: receiving the displacement data of the upper support (11) and the weight value of the weighing module collected by the distance measuring module (6); Calculating the adjustment amount of the overload protection screw (3) or the pull-up protection screw (4) under the current load according to a preset algorithm; A control instruction is sent to the driving mechanism to control the overload protection screw (3) or the pull-up protection screw (4) to rotate until the weight value or the displacement value reaches the target value.

3. The electronic scale device based on intelligent adjustment of protective screws according to claim 2, characterized in that: The preset algorithm includes: Overload protection adjustment algorithm: when the weight value reaches a preset overload pressure, the adjustment amount is calculated, the rotation direction and speed of the driving mechanism are dynamically optimized, and the position of the overload protection screw (3) is adjusted to limit the downward deformation of the strain gauge sensor (2); Pull-up protection adjustment algorithm: when the weight value reaches a preset pull-up force, the adjustment amount is calculated, the rotation direction and speed of the driving mechanism are dynamically optimized, and the position of the pull-up protection screw (4) is controlled in combination with the displacement variation range to limit the pull-up deformation of the strain gauge sensor (2).

4. The electronic scale device based on intelligent adjustment of protection screws according to claim 3 is characterized in that: In the overload protection adjustment algorithm, the dynamic optimization of the rotation direction and speed of the driving mechanism and the adjustment of the position of the overload protection screw (3) include: When the weight value reaches the overload pressure for the first time, the driving mechanism quickly adjusts the position of the overload protection screw (3) by rotating at high speed, so that the downward pressure deformation of the strain gauge sensor (2) is reduced to 70-80% of the target deformation; When the downward pressure deformation amount of the strain gauge sensor (2) approaches the target deformation amount, the driving mechanism switches to low-speed rotation for fine adjustment so that the downward pressure deformation amount is within the target range.

5. The electronic scale device based on intelligent adjustment of protective screws according to claim 3 is characterized in that: In the pull-up protection adjustment algorithm, the dynamic optimization of the rotation direction and speed of the driving mechanism and the control of the position of the pull-up protection screw (4) in combination with the displacement variation range to limit the pull-up deformation of the strain gauge sensor (2) include: When the weight value reaches the pull-up force for the first time, the driving mechanism quickly adjusts the position of the pull-up protection screw (4) by rotating at high speed, so that the pull-up deformation of the strain gauge sensor (2) is reduced to 70-80% of the target deformation; When the pull-up deformation amount of the strain gauge sensor (2) approaches the target deformation amount, the driving mechanism switches to low-speed rotation for fine adjustment so that the pull-up deformation amount is within the target range.

6. The electronic scale device based on intelligent adjustment of protection screws according to claim 4 or 5, characterized in that: The dynamically optimizing the rotation direction and speed of the driving mechanism further includes: The distance measurement module (6) monitors the displacement change of the strain gauge sensor (2) in real time, and feeds back the data to the central control system to dynamically correct the rotation angle and direction of the driving mechanism.

7. The electronic scale device based on intelligent adjustment of protection screws according to claim 1, characterized in that: The driving mechanism is a controllable electric screwdriver for adjusting the screw positions of the overload protection screw (3) and the pull-up protection screw (4) with micron-level precision.

8. The electronic scale device based on intelligent adjustment of protection screws according to claim 1, characterized in that: The force application module (5) includes a standard weight for simulating an overload scenario and a hanging scale for simulating a pull-up scenario.

9. The electronic scale device based on intelligent adjustment of protection screws according to claim 1, characterized in that: The distance measuring module (6) is a high-precision laser distance measuring device.

10. A method for operating an electronic scale based on intelligent adjustment of a protection screw, comprising the electronic scale device based on intelligent adjustment of a protection screw according to any one of claims 1 to 9, characterized in that: Also includes: Loading a preset load and collecting data: applying a preset load to the strain gauge electronic scale body through the force application module (5), the preset load including overload pressure or upward pulling force; collecting the current weight value through the strain gauge sensor (2), and monitoring the displacement data of the upper bracket (11) under different preset loads in real time through the distance measurement module (6), and transmitting the weight value and the displacement data to the central control system; Calculating the adjustment amount of the protection screw: the central control system calculates the adjustment amount of the position of the overload protection screw (3) or the pull-up protection screw (4) required to be adjusted under the current preset load based on the weight value and the displacement data based on a preset algorithm; Dynamically adjusting the protection screw: the central control system sends a control instruction to the driving mechanism to drive the overload protection screw (3) or the pull-up protection screw (4) to rotate, thereby adjusting the distance between the upper support (11) and the lower support (12); Real-time feedback and optimization: During the adjustment process, the distance measurement module (6) continuously monitors the displacement change of the upper bracket (11) and feeds back the real-time data to the central control system; and the central control system dynamically optimizes the rotation direction and speed of the driving mechanism based on the feedback data to correct the adjustment deviation so that the deformation of the strain gauge sensor (2) is within the target range; Verify the adjustment accuracy: After the adjustment is completed, test the weight or displacement value of the strain gauge sensor by applying a verification load to see if it meets the preset standard. If the test result meets the requirements, the adjustment is confirmed to be qualified. If not, repeat the above adjustment steps until the standard is met.

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