Steel ball mass continuous measurement system and method

Abstract

The invention relates to the technical field of measurement, in particular to a continuous measurement system and method for the quality of a steel ball. According to the steel ball mass continuous measurement system, the fixed measurement assembly and the floating measurement assembly are adopted for dual measurement, and the first mass data and the second mass data are obtained respectively. The calculation processing device calculates a difference value according to the two groups of data and judges whether the difference value is within an error range. And when the difference value is within the error range, taking the second mass data as an actual measurement value of the mass of the steel ball. According to the dual measurement and data verification mode, errors possibly generated by a single measurement mode can be effectively reduced, and the accuracy and reliability of a measurement result are improved. If one measuring assembly breaks down or the measuring result is abnormal, the problem can be found in time by comparing the two sets of data, and quality control of the measuring process is guaranteed.

Description

Technical Field

[0001] The present invention relates to the field of measurement technology, and particularly to a continuous measurement system and method for the quality of steel balls. Background Art

[0002] In industrial production, steel balls, as an important basic component, are widely used in many fields such as bearings, valves, grinding equipment, etc. The quality of steel balls directly affects the performance and service life of related products. Therefore, it is crucial to accurately measure and strictly control the quality of steel balls.

[0003] Traditional methods for measuring the quality of steel balls mainly adopt the way of manual measurement one by one. This way has many drawbacks: on the one hand, the manual measurement efficiency is extremely low, making it difficult to meet the requirements of large-scale industrial production. On the other hand, manual measurement is easily affected by subjective factors of the measurement personnel, such as differences in measurement techniques, visual errors, etc., resulting in poor accuracy and consistency of the measurement results and unable to ensure the stability of product quality.

[0004] In addition, during the measurement process, external environmental factors such as vibration and impact will have a great interference on the measurement results. Traditional measurement equipment lacks effective anti-interference measures, resulting in large measurement errors and unable to meet the requirements of high-precision measurement. Summary of the Invention

[0005] To solve the above problems, on the one hand, the present invention discloses a continuous measurement system for the quality of steel balls, including: a conveying component, a fixed measurement component, a floating measurement component, and a calculation and processing device. The fixed measurement component includes a first transfer and transmission component and a weight measurement sensor. The weight measurement sensor is arranged on the lower side of the first transfer and transmission component and is used to measure the first quality data of the steel balls on the first transfer and transmission component and transmit it to the calculation and processing device; The floating measurement component includes a second transfer and transmission component, a pressure sensor, a floating platform, and a base. The base suspends the floating platform above it through pneumatic drive. The pressure sensor is installed on the ventilation pipeline of the base and transmits the pressure measurement data to the calculation and processing device. The second quality data of the steel balls is calculated and obtained through the calculation and processing device; The calculation and processing device is used to calculate the difference between the obtained first quality data and the second quality data, judge whether it is within the error range, and when it is determined to be within the range, use the second quality data as the actual measurement value of the quality of the steel balls.

[0006] The upper surface of the base is provided with a plurality of first ventilation holes facing the floating platform. Guide columns are provided at the four corners of the bottom of the floating platform and extend downward. The base is provided with guide sleeves corresponding to the guide columns. The guide columns are located inside the guide sleeves, and the two are in clearance fit. A second ventilation hole is provided in a circle inside the guide sleeve facing the outer periphery of the guide column.

[0007] In a possible implementation manner, the diameter of the lower end of the guide sleeve gradually decreases from top to bottom.

[0008] In the above solution, the guide sleeve and the guide column are respectively connected to an electrical signal transmission line, and the other end of the electrical signal transmission line is connected to an electrical signal detection sensor. When the guide sleeve and the guide column are in contact, the electrical signal detection sensor detects the electrical signal and transmits it to the calculation and processing device. The calculation and processing device determines whether there is contact between the floating platform and the base based on the electrical signal, and determines whether the mass of the measured steel ball is accurate.

[0009] The conveying assembly, the first intermediate transfer assembly, and the second intermediate transfer assembly each include two rows of conveyor belts arranged opposite to each other. Limiting grooves for placing steel balls are symmetrically arranged on the two rows of conveyor belts. The length of the conveyor belts in the first intermediate transfer assembly and the second intermediate transfer assembly is shorter than that of the conveying assembly, and the heights of the conveying assembly, the first intermediate transfer assembly, and the second intermediate transfer assembly decrease in sequence.

[0010] On the other hand, the present invention also discloses a continuous measurement method for the mass of steel balls, specifically including the following steps: Convey the steel balls through the conveying assembly; Use the first intermediate transfer assembly to receive the steel balls conveyed by the conveying assembly; Measure the first mass data of the steel balls on the first intermediate transfer assembly through a weight measurement sensor disposed below the first intermediate transfer assembly, and transmit the first mass data to the calculation and processing device; Use the second intermediate transfer assembly to receive the steel balls conveyed by the conveying assembly; Suspend the floating platform above the base through pneumatic drive; The calculation and processing device calculates and obtains the second mass data of the steel balls on the second intermediate transfer assembly based on the acquired pressure measurement data, and then calculates the difference between the acquired first mass data and the second mass data; determines whether the difference is within the error range; if it is determined to be within the error range, the second mass data is used as the actual measured value of the mass of the steel ball.

[0011] In the above solution, the method further includes: Collect measurement data of multiple different steel balls using the weight measurement sensor, and at the same time obtain vibration characteristic data during the measurement process using the vibration sensor; Taking the collected vibration characteristic data as the independent variable and the error data measured by the weight measurement sensor as the dependent variable, a linear regression model is constructed; When actually measuring steel balls, the vibration characteristic data of the vibration sensor is collected in real time; Input the vibration characteristic data collected in real time into the trained linear regression model to predict the weighing error in the current vibration environment; Subtract the predicted weighing error from the weight of the steel ball measured by the weight measurement sensor to obtain the compensated weight measurement result of the steel ball; Among them, the vibration characteristic data includes vibration frequency and amplitude.

[0012] In addition, the method further includes judging whether the measurement processes of the fixed measurement component and the floating measurement component are stable by the calculation and processing device, and this process specifically includes: After working for a period of time, respectively obtain the first quality data and the second quality data obtained from multiple measurements, and then draw a trend chart of the first quality data and the second quality data changing with the number of measurements; Calculate the correlation coefficient of the first quality data sequence and the second quality data sequence by the calculation and processing device. When the correlation coefficient is greater than the set threshold, it is determined that the measurement process is stable, and the first quality data and the second quality data pass the mutual verification.

[0013] The continuous measurement system for the quality of steel balls of the present invention continuously conveys the steel balls to be measured to the fixed measurement component and the floating measurement component through the conveying component for quality measurement. The coordinated work of the conveying component, the first transfer transmission component and the second transfer transmission component ensures that the steel balls can be measured orderly and continuously. The system adopts the fixed measurement component and the floating measurement component for dual measurement to respectively obtain the first quality data and the second quality data. The calculation and processing device calculates the difference according to these two groups of data and judges whether it is within the error range. When the difference is within the error range, the second quality data is used as the actual measurement value of the steel ball quality. This dual measurement and data verification method can effectively reduce the errors that may be generated by a single measurement method and improve the accuracy and reliability of the measurement results. If one of the measurement components fails or the measurement result is abnormal, the problem can be found in time by comparing the two groups of data, ensuring the quality control of the measurement process. The floating platform in the floating measurement component is suspended above the base through pneumatic drive, and this suspension design can effectively reduce the influence of external vibration and impact on the measurement. The suspension structure of the floating platform provides a relatively stable measurement environment for the pressure sensor, enabling the pressure sensor to measure the quality of the steel ball more accurately and further improving the measurement accuracy. Description of the Drawings

[0014] Figure 1 It is a diagram of the continuous measurement system for the quality of steel balls in the embodiment of the present invention; Figure 2 Schematic structural diagrams of the conveying assembly, the fixed measurement assembly, and the floating measurement assembly in the embodiments of the present invention; Figure 3 Schematic structural diagram of the base in the embodiments of the present invention; Figure 4 is Figure 2 side view of; Figure 5 Schematic connection diagram of the electrical signal detection sensor in the embodiments of the present invention; Figure 6 Flowchart of the continuous measurement method for the mass of steel balls in the embodiments of the present invention. Specific embodiments

[0015] To make the objectives, features, and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the embodiments described below are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention. The principles and features of the present invention will be described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0016] The term "including" in the specification or claims of the present invention and other similar expressions mean covering non-exclusive inclusion. For example, a process, method, system, or device that includes a series of steps or units is not limited to the listed steps or units.

[0017] Embodiment 1: As Figures 1 to 4 shown, a continuous measurement system for the mass of steel balls, the system includes: a conveying assembly 100, a fixed measurement assembly 101, a floating measurement assembly 102, and a calculation and processing device 103. The fixed measurement assembly 101 includes a first transfer and transmission assembly 104 and a weight measurement sensor 105. The weight measurement sensor 105 is disposed below the first transfer and transmission assembly 104 for measuring the first mass data of the steel balls on the first transfer and transmission assembly 104 and transmitting it to the calculation and processing device 103; The conveying assembly 100 continuously conveys the steel balls to be measured to the fixed measurement assembly and the floating measurement assembly for mass measurement to achieve the continuous measurement function of the mass of the steel balls; The first transfer and transmission assembly 104 receives the steel balls sent by the conveying assembly 100 and temporarily places them on this assembly for mass measurement. The first transfer and transmission assembly 104 can be a simple platform or track to ensure that the steel balls can stay and pass stably.

[0018] The weight measurement sensor 105 is disposed below the first transfer and transmission component 104. When the steel ball is located on the first transfer and transmission component 104, the weight measurement sensor 105 can measure the first mass data of the steel ball. This sensor can use devices such as pressure sensors and weighing sensors that can measure the mass of an object. The measured first mass data will be transmitted to the calculation and processing device 103 for subsequent processing; The floating measurement component 102 includes a second transfer and transmission component 106, a pressure sensor 107, a floating platform 108, and a base 109. The base 109 pneumatically drives the floating platform 108 to float above the base 109. The pressure sensor 107 is installed on the ventilation pipeline of the base 109 and transmits the pressure measurement data to the calculation and processing device 103. The second mass data of the steel ball is obtained through calculation by the calculation and processing device 103; The second transfer and transmission component 106 is similar to the first transfer and transmission component 104 and is used to transfer the steel ball and receive the steel ball sent by the conveying component 100. When the steel ball is located on the second transfer and transmission component 106, the pressure sensor 107 measures the second mass data of the steel ball and transmits it to the calculation and processing device 103; The floating platform 108 is suspended above the base 109 through pneumatic drive. The suspended design can reduce the influence of external vibration and interference on the measurement result and improve the measurement accuracy; The pressure sensor 107 is installed on the ventilation pipeline of the base 109 and is used to measure the pressure change in the ventilation pipeline in real time. When the steel ball is placed on the floating platform 108, the floating platform 108 will have a small displacement change due to the gravity of the steel ball, which will cause the air cushion pressure between the base 109 and the floating platform 108 to change, and the pressure in the ventilation pipeline will also change accordingly and be converted into pressure measurement data in the form of an electrical signal; After receiving the pressure measurement data transmitted by the pressure sensor 107, the calculation and processing device 103 will calculate according to the pre-established pressure-mass mathematical model. This model is the corresponding relationship between the pressure change in the ventilation pipeline and the mass of the steel ball obtained through a large number of experiments and data fitting. The calculation and processing device 103 calculates the second mass data of the steel ball based on the pressure measurement data using this mathematical model.

[0019] The calculation and processing device 103 is used to calculate the difference between the obtained first mass data and the second mass data, determine whether it is within the error range, and when it is determined to be within the range, use the second mass data as the actual measurement value of the mass of the steel ball.

[0020] The calculation processing device 103 receives the first mass data from the weight measurement sensor 105 and the second mass data from the pressure sensor 107. Its main working process is as follows: Calculate the difference between the first mass data and the second mass data.

[0021] Determine whether the difference is within a preset error range. The setting of the error range is usually determined according to the measurement accuracy requirements and the actual production situation.

[0022] If the difference is within the error range, it means that the two measurement results are relatively consistent. At this time, the second mass data is used as the actual measured value of the steel ball mass. The reason for this is that since the floating measurement component 102 adopts a suspension design, the measurement result is more accurate, so the second mass data is preferentially selected as the final result.

[0023] Exemplarily, the measurement and calculation process of a steel ball includes: The first measurement (fixed measurement component): The steel ball passes through the fixed measurement component 101, and the weight measurement sensor 105 measures the first mass data m1 = 25.3 grams, and this data is transmitted to the calculation processing device 103; The second measurement (floating measurement component): The same steel ball then passes through the floating measurement component 102, and the second mass data m2 = 25.5 grams is measured and converted according to the pressure sensor 107; Calculate the difference and make a judgment. After the calculation processing device 103 receives the two mass data, it first calculates their difference △m = m2 - m1. Substituting m1 = 25.3 grams and m2 = 25.5 grams into the formula, we get: △m = 25.5 - 25.3 = 0.2 grams Then, determine whether the difference is within the preset error range. Since the allowable error range is ±0.5 grams, and the calculated difference of 0.2 grams is between -0.5 grams and +0.5 grams, that is, -0.5 < 0.2 < 0.5, it means that the two measurement results are relatively consistent.

[0024] Determine the actual measured value. According to the system rules, when the difference is within the error range, the second mass data is used as the actual measured value of the steel ball mass. Therefore, the actual measured value of the steel ball mass is m = 25.5 grams.

[0025] Example of abnormal situation: Suppose the first mass data m1 = 25.3 grams measured by the weight measurement sensor 105, and the second mass data m2 = 26.0 grams measured by the pressure sensor 107.

[0026] Under normal circumstances, the floating platform can float to reduce the influence of external vibration and interference on measurement. However, when the floating platform gets stuck, its buffering and vibration isolation functions fail, and external micro-vibrations, impact forces, etc. will be directly transmitted to the pressure sensor, resulting in a large deviation in the measured secondary quality data. The difference from the primary quality data may exceed the error range, affecting the accuracy of the final measurement result. The stuck state may make the floating platform unstable. During the steel ball measurement process, the position or attitude of the floating platform may change irregularly, making the measurement environment inconsistent each time the pressure sensor measures, resulting in large fluctuations in the secondary quality data obtained from multiple measurements and unable to obtain a stable and reliable measurement value.

[0027] As Figure 1 shown, in a possible implementation, the conveying assembly 100, the first intermediate transfer assembly 104, and the second intermediate transfer assembly 106 each include two rows of conveyer belts 116 arranged opposite to each other. Limiting grooves 117 for placing steel balls are symmetrically arranged on the two rows of conveyer belts 116. The length of the conveyer belts 116 in the first intermediate transfer assembly 104 and the second intermediate transfer assembly 106 is shorter than that of the conveying assembly 100, and the heights of the conveying assembly 100, the first intermediate transfer assembly 104, and the second intermediate transfer assembly 106 decrease in sequence.

[0028] The conveying assembly 100, the first intermediate transfer assembly 104, and the second intermediate transfer assembly 106 all adopt a structure of two rows of conveyer belts arranged opposite to each other, which can stably clamp and convey the steel balls from both sides, avoiding situations such as left - right shaking and deviation of the steel balls during the conveying process, and ensuring that the steel balls can accurately move to each measurement position along the predetermined path.

[0029] Limiting grooves 117, limiting grooves for placing steel balls are symmetrically arranged on the two rows of conveyer belts 116. The function of the limiting grooves is to further restrict the position of the steel balls and ensure that the steel balls maintain a stable attitude during the conveying process.

[0030] The length of the conveyer belts 116 in the first intermediate transfer assembly 104 and the second intermediate transfer assembly 106 is shorter than that of the conveying assembly 100. Because the main function of the conveying assembly 100 is to continuously convey a large number of steel balls to be measured from the initial position to the measurement area, a longer conveyer belt is required to ensure sufficient conveying capacity and buffer space. While the first intermediate transfer assembly 104 and the second intermediate transfer assembly 106 are mainly used for temporarily transferring steel balls for quality measurement. The shorter conveyer belt length can make the residence time of the steel balls during the transfer process shorter, improve the measurement efficiency, and at the same time facilitate the accurate measurement of the steel balls by the measurement sensor.

[0031] The heights of the conveying assembly 100, the first intermediate transfer assembly 104, and the second intermediate transfer assembly 106 decrease in sequence. During the transfer process, the effect of gravity is utilized, enabling the steel balls to smoothly transition between different components. When the steel balls are conveyed from the conveying assembly 100 to the first intermediate transfer assembly 104, due to the height difference, the steel balls can naturally slide from the limiting groove of the conveying assembly 100 to the limiting groove of the first intermediate transfer assembly 104 by their own gravity without the need for an additional driving device. Similarly, the same applies to the steel balls from the first intermediate transfer assembly 104 to the second intermediate transfer assembly 106.

[0032] Embodiment 2: As Figure 3 shown, a plurality of first vent holes 110 facing the floating platform 108 are provided on the upper surface of the base 109. Guide posts 111 are provided at the four corners of the bottom of the floating platform 108 and extend downward. The base 109 is provided with guide sleeves 112 corresponding to the guide posts 111. The guide posts 111 are located within the guide sleeves 112, and there is a clearance fit between the two. A second vent hole 113 is provided in a circle on the inner periphery of the guide sleeve 112 facing the outer periphery of the guide post 111.

[0033] By introducing compressed air into the first vent holes 110, the compressed air will form an air cushion between the base 109 and the floating platform 108, generating an upward buoyancy force, thereby suspending the floating platform 108 above the base 109; the distribution of the plurality of vent holes can make the pressure distribution of the air cushion more uniform, ensuring the stable suspension of the floating platform 108.

[0034] The guide posts 111 and the guide sleeves 112 constitute a guiding mechanism, whose main function is to limit the displacement of the floating platform 108 in the horizontal direction, ensuring that the floating platform 108 can only move up and down in the vertical direction during the suspension process, and preventing the floating platform 108 from experiencing horizontal shaking or deviation. The design of the clearance fit not only ensures that the guide posts 111 can freely slide within the guide sleeves 112 but also provides a certain guiding accuracy, making the suspension position of the floating platform 108 more stable.

[0035] At the same time, a second vent hole 113 is provided in a circle on the inner periphery of the guide sleeve 112 facing the outer periphery of the guide post 111. When the compressed air enters between the base 109 and the floating platform 108 from the first vent holes 110, part of the air will enter the gap between the guide sleeve 112 and the guide post 111 through the second vent hole 113, forming an air layer to avoid contact between the two, reducing the direct contact and friction between the guide posts 111 and the guide sleeves 112, which may cause slight vibration or position deviation of the floating platform 108.

[0036] During the specific working process, when the system is started, compressed air is introduced into the first vent holes 110, and the compressed air forms an air cushion between the base 109 and the floating platform 108, causing the floating platform 108 to start to suspend; During the suspension of the floating platform 108, the guide post 111 moves up and down along the vertical direction within the guide sleeve 112. Due to the clearance fit and the effect of the air lubrication layer (formed through the second vent hole 113), the sliding of the guide post 111 is smooth, ensuring the stable suspension of the floating platform 108.

[0037] In a possible implementation, the diameter of the lower end of the guide sleeve 112 gradually decreases from top to bottom. When it is necessary to stop suspension or perform maintenance, the floating platform 108 descends, and the structure with the gradually decreasing diameter of the lower end of the guide sleeve 112 helps the guide post 111 to accurately insert into the guide sleeve 112 to complete the positioning of the floating platform 108.

[0038] Example 3: As Figure 5 shown, the guide sleeve 112 and the guide post 111 are respectively connected in an electrical signal transmission line 114, and the other end of the electrical signal transmission line 114 is connected to an electrical signal detection sensor 115. In this way, when the guide sleeve 112 and the guide post 111 are in contact, the electrical signal detection sensor 115 detects the electrical signal and transmits it to the calculation and processing device 103. The calculation and processing device 103 determines whether there is contact between the floating platform 108 and the base 109 according to the electrical signal, and determines whether the mass of the measuring steel ball is accurate. In a possible implementation, the electrical signal detection sensor 115 can be a current sensor; the electrical signal transmission line 114 is connected to a signal source (such as an adjustable power supply); When the floating platform 108 is normally suspended, the guide post 111 has a clearance fit within the guide sleeve 112, and the two are not in direct contact. The electrical signal transmission line 114 is in an open circuit state, and the electrical signal detection sensor 115 cannot detect the electrical signal. At this time, the calculation and processing device 103 can consider that there is no contact between the floating platform 108 and the base 109, the measurement environment is normal, and the mass data of the measured steel ball may be accurate.

[0039] If due to certain reasons (such as jamming of the floating platform, external interference, etc.) the guide sleeve 112 and the guide post 111 come into contact, the electrical signal transmission line 114 will form a path and generate an electrical signal. After the electrical signal detection sensor 115 detects the electrical signal, it transmits it to the calculation and processing device 103. The calculation and processing device 103 determines that there is contact between the floating platform 108 and the base 109 according to the received electrical signal. This contact may affect the suspension stability of the floating platform 108, and further cause additional forces or interferences to be introduced during the measurement, making the measured mass data of the steel ball inaccurate. In this case, the calculation and processing device 103 may take corresponding measures, such as issuing an alarm, marking the measurement data as abnormal, and requiring re-measurement, etc.

[0040] Example 4: As Figure 6 shown, a continuous measurement method for the mass of a steel ball specifically includes the following steps: S101: Convey the steel balls through the conveying component; S102: Use the first transfer and transmission component to receive the steel balls conveyed by the conveying component; S103: Measure the first mass data of the steel balls on the first transfer and transmission component through the weight measurement sensor arranged under the first transfer and transmission component, and transmit the first mass data to the calculation and processing device; S104: Use the second transfer and transmission component to receive the steel balls conveyed by the conveying component; S105: Make the pneumatically driven floating platform float above the base; S106: The calculation and processing device calculates the second mass data of the steel balls on the second transfer and transmission component according to the acquired pressure measurement data, and then calculates the difference between the acquired first mass data and the second mass data; determine whether the difference is within the error range; if it is determined that it is within the error range, then use the second mass data as the actual measurement value of the steel ball mass.

[0041] In the above solution, the method further includes: S201: Use the weight measurement sensor to collect measurement data of multiple groups of different steel balls, and at the same time use the vibration sensor to obtain the vibration characteristic data during the measurement process; Among them, when using the weight measurement sensor to collect measurement data of multiple groups of different steel balls, the data is obtained in the actual measurement environment. Due to the existence of vibration in the measurement environment, there may be errors in the measurement results; In a specific solution, the vibration characteristic data includes the vibration frequency and the amplitude. The vibration frequency reflects the speed of vibration, and the amplitude represents the magnitude of vibration. They are important parameters for describing the vibration environment; S202: Use the collected vibration characteristic data as the independent variable and the error data measured by the weight measurement sensor as the dependent variable to construct a linear regression model; the error data refers to the difference between the measurement value of the weight measurement sensor and the true weight of the steel ball; The linear regression model is a mathematical model used to describe the linear relationship between the independent variable and the dependent variable. Assume that the vibration frequency is x1, the amplitude is x2, and the weighing error is y. Then the linear regression model can be expressed as y = βo + β1x1 + β2x2 + e, where βo is the intercept, β1 and β2 are the regression coefficients, and e is the error term. By fitting the multiple groups of data collected, the values of the regression coefficients βo, β1, and β2 can be determined, thereby obtaining a specific linear regression model; S203: When actually measuring steel balls, vibration characteristic data of the vibration sensor are collected in real time; the vibration characteristic data collected in real time are input into the trained linear regression model to predict the weighing error in the current vibration environment; the weight of the steel ball measured by the weight measurement sensor is subtracted by the predicted weighing error to obtain the compensated steel ball weight measurement result. The vibration characteristic data collected in real time are input into the trained linear regression model, and the weighing error in the current vibration environment is predicted according to the calculation result of the model. For example, if the vibration frequency collected in real time is x1real and the amplitude is x2real, substituting them into the linear regression model y = βo + β1x1real + β2x2real can obtain the predicted weighing error y. pred 。

[0042] In addition, the method further includes judging whether the measurement processes of the fixed measurement component and the floating measurement component are stable through the calculation and processing device, and this process specifically includes: S301: After working for a period of time, the first quality data and the second quality data obtained from multiple measurements are respectively acquired, and then the trend graphs of the first quality data and the second quality data changing with the measurement times are drawn; the purpose of working for a period of time is to make the measurement system enter a relatively stable operation state and avoid the influence of unstable factors that may exist in the initial stage on the data. Multiple measurements can obtain enough data samples to more accurately analyze the stability of the measurement process. For example, the Pearson correlation coefficient. The closer the correlation coefficient is to 1, the stronger the linear correlation between the two sets of data and the more consistent the change trends; the closer it is to -1, it indicates a negative correlation; close to 0 indicates that there is almost no linear relationship between the two sets of data. (Such as 0.8), it can be considered that the trends of the two sets of data are basically the same.

[0043] S302: The correlation coefficient between the first quality data sequence and the second quality data sequence is calculated through the calculation and processing device. When the correlation coefficient is greater than the set threshold, it is determined that the measurement process is stable, and the first quality data and the second quality data pass the mutual verification.

[0044] A threshold is preset in advance. When the calculated correlation coefficient is greater than the set threshold, it is determined that the measurement process is stable, and it is considered that the first quality data and the second quality data pass the mutual verification. The closer the threshold is to 1, the higher the requirement for the consistency of the measurement data. For example, if the set threshold is 0.9, when the calculated correlation coefficient is greater than 0.9, it indicates that the linear correlation between the first quality data and the second quality data is very strong, the measurement results of the two measurement components are relatively consistent, and the measurement process is stable and reliable; on the contrary, if the correlation coefficient is less than the threshold, it may indicate that there are problems in the measurement process, and it is necessary to further check whether the measurement components are working properly and whether there are external interference factors, etc.

[0045] By performing verification using the correlation between the first quality data and the second quality data, abnormal situations that may exist in a single measurement component can be discovered, improving the reliability of the measurement results. For example, if a measurement component fails and causes abnormal measurement data, then its data correlation with another normal measurement component will decrease, enabling problems to be discovered and processed in a timely manner.

[0046] The technical means disclosed in the solution of the present invention are not limited to the technical means disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present invention.

Claims

1. A continuous measurement system for the mass of steel balls, characterized in that, Comprising: A conveying component, a fixed measurement component, a floating measurement component, and a calculation and processing device. The fixed measurement component includes a first intermediate transfer component and a weight measurement sensor. The weight measurement sensor is disposed below the first intermediate transfer component and is used to measure the first mass data of the steel balls on the first intermediate transfer component and transmit it to the calculation and processing device; The floating measurement component includes a second intermediate transfer component, a pressure sensor, a floating platform, and a base. The base suspends the floating platform above it through pneumatic drive. The pressure sensor is installed on the ventilation pipeline of the base and transmits the pressure measurement data to the calculation and processing device, and the second mass data of the steel balls is obtained through calculation by the calculation and processing device; The calculation and processing device is used to calculate the difference between the obtained first mass data and the second mass data, determine whether it is within the error range, and when it is determined to be within the range, use the second mass data as the actual measured value of the steel ball mass.

2. The system according to claim 1, wherein A plurality of first ventilation holes facing the floating platform are provided on the upper surface of the base. Guide columns are provided at the four corners of the bottom of the floating platform and extend downward. The base is provided with guide sleeves corresponding to the guide columns. The guide columns are located within the guide sleeves and have a clearance fit therebetween. A second ventilation hole is provided in a circle on the inner periphery of the guide sleeve facing the outer periphery of the guide column.

3. The system according to claim 2, wherein The diameter of the lower end of the guide sleeve gradually decreases from top to bottom.

4. The system according to claim 2 or 3, characterized in that, The guide sleeve and the guide column are respectively connected in an electrical signal transmission line. The other end of the electrical signal transmission line is connected to an electrical signal detection sensor. In this way, when the guide sleeve and the guide column are in contact, the electrical signal detection sensor detects the electrical signal and transmits it to the calculation and processing device. The calculation and processing device determines whether there is contact between the floating platform and the base based on the electrical signal and determines whether the measurement of the steel ball mass is accurate.

5. The system according to claim 1, characterized in that, The conveying component, the first intermediate transfer component, and the second intermediate transfer component all include two rows of conveyor belts arranged oppositely. Limiting grooves for placing steel balls are symmetrically provided on the two rows of conveyor belts. The length of the conveyor belts in the first intermediate transfer component and the second intermediate transfer component is shorter than that of the conveying component, and the heights of the conveying component, the first intermediate transfer component, and the second intermediate transfer component decrease in sequence.

6. A continuous measurement method for the quality of steel balls, characterized in that, Including the following steps: Convey the steel balls through the conveying component; Use the first intermediate transfer component to receive the steel balls conveyed by the conveying component; Measure the first mass data of the steel balls on the first intermediate transfer component through the weight measurement sensor disposed below the first intermediate transfer component, and transmit the first mass data to the calculation and processing device; Use the second intermediate transfer component to receive the steel balls conveyed by the conveying component; Suspend the floating platform above the base through pneumatic drive; The calculation and processing device calculates the second mass data of the steel balls on the second intermediate transfer component according to the obtained pressure measurement data, and then calculates the difference between the obtained first mass data and the second mass data; Judge whether the difference is within the error range; if it is determined to be within the error range, use the second mass data as the actual measured value of the steel ball mass.

7. The method according to claim 6, wherein The method further includes: Collect measurement data of multiple different steel balls using a weight measurement sensor, and at the same time, obtain vibration characteristic data during the measurement process using a vibration sensor; Construct a linear regression model with the collected vibration characteristic data as the independent variable and the error data measured by the weight measurement sensor as the dependent variable; When actually measuring steel balls, collect vibration characteristic data of the vibration sensor in real time; Input the vibration characteristic data collected in real time into the trained linear regression model to predict the weighing error in the current vibration environment; Subtract the predicted weighing error from the weight of the steel ball measured by the weight measurement sensor to obtain the compensated steel ball weight measurement result.

8. The method according to claim 7, wherein The vibration characteristic data includes vibration frequency and amplitude.

9. The method according to claim 6, wherein The method further includes determining whether the measurement processes of the fixed measurement component and the floating measurement component are stable through the calculation and processing device, and this process specifically includes: After working for a period of time, respectively obtain the first quality data and the second quality data obtained from multiple measurements, and then draw a trend chart of the first quality data and the second quality data changing with the number of measurements; Calculate the correlation coefficient between the first quality data sequence and the second quality data sequence through the calculation and processing device. When the correlation coefficient is greater than the set threshold, it is determined that the measurement process is stable, and the first quality data and the second quality data pass the mutual verification.

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