A low-cost real-time measurement system and method for rapidly measuring the plasticity of ceramic slip

Abstract

This application relates to the field of ceramic material processing performance testing technology, and discloses a low-cost, rapid real-time measurement system and method for measuring the plasticity of ceramic clay. The system includes: a mechanical execution unit for compressing the clay sample to be tested along a preset direction, causing deformation; a sensing and detection unit for collecting displacement data of the mechanical execution unit in the preset direction and force data of the clay sample during deformation, and outputting force-displacement change data; and a control and processing unit connected to the mechanical execution unit for controlling the mechanical execution unit to compress the clay sample, and also connected to the sensing and detection unit to acquire the force-displacement change data, and calculate the plasticity characteristic parameters of the clay sample based on the force-displacement change data. Through the above measurement method and system, the testing time can be effectively shortened, and the testing efficiency can be effectively improved.

Description

Technical Field

[0001] This application relates to the field of ceramic material process performance testing technology, and in particular to a low-cost, rapid real-time measurement system and method for measuring the plasticity of ceramic clay. Background Technology

[0002] The plasticity of ceramic clay is a key indicator determining its extrusion molding performance, directly affecting the molding quality, drying shrinkage, and firing pass rate of the product. Traditional methods for evaluating plasticity mainly rely on experiential judgment or complex laboratory instrument analysis, which suffers from problems such as high subjectivity, time-consuming, and costly.

[0003] In the prior art, invention patent CN112730009A discloses a ceramic clay plasticity testing device. This method prepares standard clay strips through vacuum stirring and aging, and then measures their fracture strength to evaluate plasticity. Although this method provides a quantitative evaluation means, the sample preparation process is complex, and the testing cycle takes several hours, which cannot meet the rapid feedback requirements of the production site. Invention patent CN113533000B discloses a detection method based on clay flowability, which indirectly evaluates plasticity by measuring the flow distance of the clay on an inclined plate.

[0004] While this method simplifies the operation process, the test results are significantly affected by the surface tension and adhesion of the clay, and have a weak correlation with the mechanical behavior of the actual extrusion process. In addition, although commercial rheometers (such as TA.XT Plus) can provide accurate rheological parameters, the equipment is expensive (200,000-500,000 RMB), complex to operate, requires professional technicians, and a single test usually takes more than 30 minutes, making it difficult to widely apply in ceramic production enterprises. Summary of the Invention

[0005] Therefore, it is necessary to provide a low-cost, rapid real-time measurement system and method for measuring the plasticity of ceramic clay to address the aforementioned technical problems.

[0006] In a first aspect, this application provides a low-cost, rapid real-time measurement system for measuring the plasticity of ceramic clay, comprising: The mechanical actuator is used to compress the mud sample to be tested along a preset direction, causing the mud sample to deform. The sensing and detection unit is used to collect displacement data of the mechanical actuator in a preset direction, as well as force data of the mud sample under test during deformation, and output force-displacement change data. It also includes a control and processing unit connected to the mechanical execution unit to control the mechanical execution unit to squeeze the mud sample to be tested, and a sensing and detection unit to obtain force-displacement change data and calculate the plastic characteristic parameters of the mud sample to be tested based on the force-displacement change data.

[0007] In one embodiment, the mechanical actuator includes a precision linear slide and a parallel plate extrusion mechanism. The parallel plate extrusion mechanism includes a loading section and an extrusion section. The working plane of the loading section is arranged parallel to the working plane of the extrusion section and is located at one end of the precision linear slide. The extrusion section is connected to the precision linear slide and is driven by the precision linear slide to move toward or away from the loading section.

[0008] In one embodiment, the precision linear slide includes a vertically arranged ball screw, a slider threadedly connected to the ball screw, and a stepper motor connected to one end of the ball screw. The extrusion part is fixedly connected to the slider, and the stepper motor is connected to a control processing unit. The control processing unit outputs a motor drive signal to control the stepper motor to rotate, so that the extrusion part moves along the axial direction of the ball screw.

[0009] In one embodiment, the sensing and detection unit includes a strain gauge pressure sensor and an ADC module. The strain gauge pressure sensor is disposed on the working surface of the extrusion section, and the ADC is connected to the strain gauge pressure sensor to sample the analog signal output by the strain gauge pressure sensor and output the force data in the form of a digital signal.

[0010] In one embodiment, the sensing and detection unit includes a stepper motor microstepping position detection module, which is used to detect the step angle of the stepper motor output shaft rotation and output a step angle pulse signal to the control processing unit, and the control processing unit calculates displacement data based on the step angle pulse signal.

[0011] Secondly, this application also provides a low-cost, rapid real-time measurement method for measuring the plasticity of ceramic clay, applied to the aforementioned low-cost, rapid real-time measurement system for measuring the plasticity of ceramic clay, comprising: Output a preset initialization command to restore the low-cost, rapid real-time measurement system for measuring the plasticity of ceramic clay to its initial state; The first control command is output to the mechanical execution unit to make the mechanical execution unit move in a preset direction. During the movement, a preset intelligent contact recognition algorithm is used to determine whether it has come into contact with the mud sample to be tested. If so, the second control command is output to the mechanical execution unit so that the mechanical execution unit extrudes the mud sample to be tested along the preset direction, and continuously collects the displacement data of the mechanical execution unit in the preset direction and the force data of the mud sample to be tested during the deformation process during the extrusion process. By mapping displacement data one-to-one with force data, force-displacement change data can be obtained. The plastic characteristic parameters of the mud sample to be tested are calculated based on the force-displacement change data, and the process evaluation level of the mud sample to be tested is obtained and output based on the plastic characteristic parameters.

[0012] In one embodiment, the preset intelligent contact recognition algorithm includes the following steps: The force data output by the sensing and detection unit is continuously read during the movement of the mechanical actuator; Determine whether the force data exceeds the preset contact judgment threshold; If so, it means that the mud sample to be tested has been in contact; Otherwise, it means that the mud sample to be tested has not been contacted.

[0013] In one embodiment, the specific steps for calculating the plastic characteristic parameters of the tested clay sample based on force-displacement change data include: Determine whether the displacement data is greater than a preset displacement threshold based on the force-displacement change data; If so, calculate the real-time rate of change of force-displacement change data after the displacement data exceeds the preset displacement threshold; Determine whether the real-time rate of change is less than the product of a preset threshold coefficient and a preset baseline slope. If so, it means that the force-displacement change data corresponding to the real-time change rate is the yield point force-displacement change data of the mud sample to be tested.

[0014] In one embodiment, the specific steps for calculating the plastic characteristic parameters of the tested clay sample based on force-displacement change data further include: The yield stress of the mud sample to be tested was calculated based on the yield point force-displacement variation data. The apparent viscosity is calculated based on the instantaneous plate spacing and instantaneous compression velocity of the mechanical actuator at the corresponding moment of the yield point force-displacement change data. Plastic characteristic parameters are calculated based on yield stress and apparent viscosity.

[0015] In one embodiment, the specific steps for obtaining and outputting the process evaluation level of the clay sample to be tested based on plasticity characteristic parameters include: By substituting the plasticity characteristic parameters into the preset plasticity characteristic parameter-evaluation level mapping relationship, the process evaluation level corresponding to the plasticity characteristic parameters is obtained and output.

[0016] The aforementioned low-cost, rapid real-time measurement system and method for measuring the plasticity of ceramic clay can effectively shorten the testing time, controlling the complete testing time to 2-3 minutes, thus effectively improving testing efficiency. Moreover, the testing system has a simple structure and a significant cost advantage compared to existing instruments. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a low-cost, rapid real-time measurement system for measuring the plasticity of ceramic clay in one embodiment. Figure 2 This is a schematic diagram of the specifications of the mud sample to be tested in one embodiment; Figure 3 This is a flowchart illustrating a low-cost, rapid, real-time measurement method for measuring the plasticity of ceramic clay in one embodiment. Figure 4 This is a schematic diagram of the initial state of the mud sample to be tested in one embodiment; Figure 5 This is a schematic diagram of the compression state of the mud sample to be tested in one embodiment; Figure 6 This is a schematic diagram of the force-displacement relationship curve during the testing process of the mud sample in one embodiment; Figure 7 This is a flowchart illustrating a dual-mode adaptive filtering strategy in one embodiment; Figure 8 This is a reference table showing the mapping relationship between preset plasticity characteristic parameters and evaluation levels in one embodiment.

[0018] Reference numerals: 1. Precision linear slide; 11. Ball screw; 12. Slider; 13. Stepper motor; 2. Parallel plate extrusion mechanism; 21. Loading section; 22. Extrusion section; 3. Base; 4. Mounting frame; 5. Mud sample to be tested. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0020] In one embodiment, such as Figure 1 As shown, in a first aspect, this application provides a low-cost, rapid, real-time measurement system for measuring the plasticity of ceramic clay, comprising: The mechanical actuator is used to compress the mud sample 5 to be tested along a preset direction, causing the mud sample to deform. The sensing and detection unit is used to collect displacement data of the mechanical actuator in a preset direction, as well as force data of the mud sample 5 under test during deformation, and output force-displacement change data. It also includes a control and processing unit connected to the mechanical execution unit to control the mechanical execution unit to squeeze the mud sample 5 to be tested, and a sensing and detection unit to obtain force-displacement change data and calculate the plastic characteristic parameters of the mud sample 5 to be tested based on the force-displacement change data.

[0021] In this embodiment of the application, the mud sample 5 to be tested is set as follows: Figure 2The cylindrical sample block shown has a diameter d ranging from 10 to 30 mm, preferably 20 mm; a height h ranging from 10 to 30 mm, preferably 15 mm; and a height-to-diameter ratio h / d ranging from 0.5 to 1.5, with a recommended ratio h / d of 0.75.

[0022] When using this low-cost, rapid real-time measurement system for measuring the plasticity of ceramic clay, the clay sample to be tested is placed in the mechanical execution unit. During the process of the mechanical execution unit extruding the clay sample 5, the sensing and detection unit records the displacement data of the mechanical execution unit to describe the degree of deformation of the clay sample 5. The system also detects the force at each stage of deformation of the clay sample 5 to obtain force data. The force-displacement change data is obtained by correlating the degree of deformation of the clay sample 5 with the force data. After the control and processing unit analyzes the force-displacement change data, it obtains the plasticity characteristic parameters of the clay sample 5 and obtains the process evaluation level of the clay sample 5 based on the value of the plasticity characteristic parameters. This completes the evaluation of the clay sample.

[0023] In this embodiment of the application, to facilitate the installation of the mechanical execution unit, the sensing and detection unit, and the control and processing unit, the low-cost and rapid real-time measurement system for measuring the plasticity of ceramic clay also includes a base 3. The mechanical execution unit includes a precision linear slide 1 and a parallel plate extrusion mechanism 2. The parallel plate extrusion mechanism 2 includes a loading part 21 and an extrusion part 22. The working plane of the loading part 21 is arranged parallel to the working plane of the extrusion part 22 and is located at one end of the precision linear slide 1. The extrusion part 22 is connected to the precision linear slide 1 and is driven by the precision linear slide 1 to move towards or away from the loading part 21.

[0024] Specifically, both the loading section 21 and the extrusion section 22 are horizontally arranged circular plate-shaped structures. The two circular planes of the loading section 21 and the extrusion section 22 that are close to each other are the working surfaces. The loading section 21 and the extrusion section 22 have the same diameter, and their axes coincide. The loading section 21 is fixedly connected to the base 3, and the extrusion section 22 is installed on the precision linear slide 1 so that it can move towards or away from the loading section 21 under the drive of the linear slide to realize the extrusion test of the mud sample 5 to be tested.

[0025] In this embodiment, the precision linear slide 1 includes a vertically arranged ball screw 11, a slider 12 threadedly connected to the ball screw 11, and a stepper motor 13 connected to one end of the ball screw 11. The pressing part 22 is fixedly connected to the slider 12. The stepper motor 13 is connected to the control processing unit. The control processing unit outputs a motor drive signal to control the stepper motor 13 to rotate, so that the pressing part 22 moves along the axial direction of the ball screw 11.

[0026] To facilitate the installation of the ball screw 11 and stepper motor 13, a mounting bracket 4 is fixedly connected to the base 3. The ball screw 11 is vertically arranged, and its two ends are rotatably connected to the horizontal sections of the base 3 and the mounting bracket 4, respectively. The stepper motor 13 is fixedly connected to the horizontal section of the mounting bracket 4, and its output shaft is fixedly connected to one end of the ball screw 11 that is closer to the horizontal section of the mounting bracket 4. The axis of the ball screw 11 is parallel to the axis of the extrusion section 22. The slider 12 is used in conjunction with the ball screw 11 and is threadedly connected. In one embodiment, a vertically arranged guide rail is also fixedly connected between the base 3 and the horizontal section of the mounting bracket 4, and the guide rail is slidably connected to the slider 12.

[0027] After the stepper motor 13 starts, it drives the ball screw 11 to rotate. The slider 12, which is threadedly connected to the ball screw 11, moves along the axis of the ball screw 11, thereby driving the extrusion part 22 to move closer to or further away from the loading part 21.

[0028] In this embodiment, the sensing and detection unit includes a strain gauge pressure sensor, a stepper motor 13 microstepping position detection module, and an ADC module. The strain gauge pressure sensor is located in the middle of the working surface of the extrusion section 22. The ADC is connected to the strain gauge pressure sensor to sample the analog signal output by the strain gauge pressure sensor and output force data in the form of a digital signal. The stepper motor 13 microstepping position detection module is used to detect the step angle of the output shaft rotation of the stepper motor 13 and output the step angle pulse signal to the control processing unit. The control processing unit calculates the displacement data based on the step angle pulse signal.

[0029] The control processing unit includes a main controller and a stepper motor 13 driver. The main controller is connected to the ADC module and the stepper motor 13 subdivision position detection module to acquire force data and displacement data. It then combines the force data and displacement data one-to-one through a preset program to obtain force-displacement change data. Based on the obtained force-displacement change data, it obtains the plastic characteristic parameters of the mud sample 5 to be tested and obtains the process evaluation level of the mud sample 5 to be tested based on the value of the plastic characteristic parameters. The main controller is also connected to the stepper motor 13 driver, which is in turn connected to the stepper motor 13. The main controller outputs control signals to the stepper motor 13 driver, which outputs drive signals according to the control signals to control the stepper motor 13 to rotate forward, reverse, or stop.

[0030] Based on the same inventive concept, this application also provides a low-cost, rapid real-time measurement method for measuring the plasticity of ceramic clay, applied to the aforementioned low-cost, rapid real-time measurement system for measuring the plasticity of ceramic clay. The solution provided by this method is similar to the solution described above. Therefore, the specific limitations in one or more embodiments of the low-cost, rapid real-time measurement method for measuring the plasticity of ceramic clay provided below can be found in the limitations of the low-cost, rapid real-time measurement system for measuring the plasticity of ceramic clay described above, and will not be repeated here.

[0031] In one embodiment, such as Figure 3 As shown, a low-cost, rapid real-time measurement method for measuring the plasticity of ceramic clay is provided, applied to the aforementioned low-cost, rapid real-time measurement system for measuring the plasticity of ceramic clay. Specifically, this low-cost, rapid real-time measurement method for measuring the plasticity of ceramic clay is applied to the main controller. This low-cost, rapid real-time measurement method for measuring the plasticity of ceramic clay includes: Step S100: Output a preset initialization command to restore the low-cost, rapid real-time measurement system for measuring the plasticity of ceramic clay to its initial state.

[0032] This step clears the data stored from the previous test, automatically zeroes the pressure sensor and initializes the filter status, controls the stepper motor 13 to quickly reverse and resets the extrusion section 22 to zero the slider 12 position, and performs a system parameter self-check. After the self-check is completed, the tester can vertically place the cylindrical mud sample 5 that meets the size requirements on the loading section 21 to begin a new round of testing.

[0033] Step S200: Output the first control command to the mechanical execution unit so that the mechanical execution unit moves along the preset direction. During the movement, the preset intelligent contact recognition algorithm determines whether it has contacted the mud sample 5 to be tested.

[0034] The first control command is used to control the extrusion section 22 to rapidly approach the carrier section 21 until the extrusion section 22 contacts the mud sample 5 to be tested. Whether the extrusion section 22 contacts the mud sample 5 to be tested is determined by a preset intelligent contact recognition algorithm preset in the main controller. In this embodiment of the application, the preset intelligent contact recognition algorithm includes the following steps: Step S210: Continuously read the force data output by the sensing and detection unit during the movement of the mechanical actuator.

[0035] In this step, when the strain gauge pressure sensor installed on the working surface of the extrusion section 22 is not in contact with the mud sample 5 to be tested, the force data output by the strain gauge pressure sensor is always less than 0N. However, when it comes into contact with the mud sample 5 to be tested, the reaction force exerted on the strain gauge by the mud sample 5 after being compressed causes the strain gauge pressure sensor to output a pressure measurement value greater than 0N.

[0036] Step S220: Determine whether the force data is greater than the preset contact judgment threshold.

[0037] In this step, to prevent the main controller from misjudging the noise signal greater than 0N output by the strain gauge pressure sensor as the pressure part having contacted the upper surface of the mud sample 5 to be tested, a preset contact judgment threshold is set in the program to reduce the probability of misjudgment. In a specific embodiment, the preset contact judgment threshold is set to 0.5N.

[0038] Step S230: If yes, it means that the mud sample 5 to be tested has been contacted.

[0039] Step S240: Otherwise, it means that the mud sample 5 to be tested has not been contacted.

[0040] Through the above steps, when the force data is greater than the preset contact judgment threshold, the position of the extrusion part 22 at this time is set as the initial position, and the distance between the extrusion part 22 and the load part 21 at this time is set as the initial plate distance.

[0041] Step S300: If yes, output the second control command to the mechanical execution unit so that the mechanical execution unit squeezes the mud sample 5 to be tested along the preset direction, and continuously collects the displacement data of the mechanical execution unit in the preset direction and the force data of the mud sample 5 to be tested during the deformation process during the squeezing process.

[0042] The second control command is used to control the extrusion section 22 to extrude the mud sample 5 to be tested at a constant speed, so as to extrude the mud sample from... Figure 4 The initial state shown is compressed to the following: Figure 5 The final state is shown. During the compression process, as the extrusion section 22 moves closer to the load section 21 from the initial position, the compression state of the mud sample 5 to be tested gradually intensifies, and the force data also changes with the change in the compression state of the mud sample 5 to be tested.

[0043] Step S400: Match the displacement data with the force data one by one to obtain force-displacement change data.

[0044] In step S400, during the test process after the extrusion section 22 contacts the mud sample 5 to be tested, displacement data and force data are sampled simultaneously to obtain the displacement data and corresponding force data of the extrusion section 22, thereby obtaining force-displacement change data. A coordinate system of force and displacement is established, and the force-displacement change data is added as data points to this coordinate system. Figure 6 The force-displacement relationship curve is shown.

[0045] In actual use, steps S300 and S400 do not have a clear order. During the compression process, new displacement data and corresponding force data can be obtained, and the displacement data and force data can be directly combined to obtain force-displacement change data.

[0046] In a preferred embodiment, a dual-mode adaptive filtering strategy is also employed during the acquisition of force-displacement change data to reduce noise signals in the force-displacement change data; the dual-mode adaptive filtering strategy includes, for example: Figure 7 The two working modes shown are as follows: Continuous testing mode: Employs a 5-point moving average filter to ensure data smoothness; Real-time query mode: Employs a 3-point fast average filter to ensure real-time response, synchronously collects force-displacement-time data, and sets the sampling frequency to 10-100Hz.

[0047] Step S500: Calculate the plastic characteristic parameters of the mud sample 5 to be tested based on the force-displacement change data, and obtain and output the process evaluation level of the mud sample 5 to be tested based on the plastic characteristic parameters.

[0048] In this embodiment of the application, the specific steps for calculating the plastic characteristic parameters of the tested clay sample 5 based on force-displacement change data include: Step S510: Determine whether the displacement data is greater than the preset displacement threshold based on the force-displacement change data.

[0049] Step S520: If yes, calculate the real-time rate of change of force-displacement change data after the displacement data exceeds the preset displacement threshold.

[0050] In one specific embodiment, a preset displacement threshold is set to 2 mm. When the extrusion section 22 contacts the mud sample to be tested, and the displacement data exceeds 2 mm, the real-time rate of change of the force-displacement change data is calculated. The specific method for calculating the real-time rate of change is as follows: Step S521: Establishment of reference slope: In the initial stage of compression, the system collects a set of force-displacement data, calculates its slope through linear regression, and establishes it as the reference slope characterizing the elastic deformation stage of the material.

[0051] Step S522: Real-time slope calculation: During the subsequent compression process, the system maintains a fixed-length sliding data window and calculates the real-time slope of the latest force-displacement data within the window.

[0052] Step S530: Determine whether the real-time rate of change is less than the product of the preset threshold coefficient and the preset baseline slope.

[0053] Step S530 is used to determine whether the mud sample 5 to be tested has been compressed to yield. When the real-time slope drops to below the product of the reference slope and a preset threshold K' (0.5 < K' < 0.8), it is determined that the material has yielded, and the force value at this moment is recorded as the yield force Fmax.

[0054] Step S540: If yes, it means that the force-displacement change data corresponding to the real-time change rate is the yield point force-displacement change data of the mud sample 5 to be tested.

[0055] In this embodiment of the application, the specific steps for calculating the plastic characteristic parameters of the tested clay sample 5 based on the force-displacement change data further include: Step S550: Calculate the yield stress of the mud sample 5 to be tested based on the yield point force-displacement change data.

[0056] Specifically, the formula for calculating yield stress is as follows: ; Where Fmax is the peak pressure (N) and A is the initial cross-sectional area of ​​the sample (m²).

[0057] Step S560: Calculate the apparent viscosity based on the instantaneous plate spacing and instantaneous compression rate of the mechanical actuator at the corresponding moment of the yield point force-displacement change data.

[0058] Specifically, the formula for calculating apparent viscosity is as follows: ; in, denoted as apparent viscosity, Fs as steady-state hydrodynamic force (N), h as instantaneous plate spacing (m), V as compression velocity (m / s), and A as initial cross-sectional area of ​​the sample (m²).

[0059] Step S570: Calculate the plastic characteristic parameters based on the yield stress and apparent viscosity.

[0060] Specifically, the formulas for calculating plastic characteristic parameters are as follows: ; in, This is a correction factor related to material properties, used in practical rapid measurements when comparing formulations of the same type of clay. A value of 1 is sufficient. At this point, the plasticity index reflects the relative trend of material plasticity, which is enough to meet the comparative control needs of the production process.

[0061] In one embodiment, the specific steps for obtaining and outputting the process evaluation level of the tested clay sample 5 based on plasticity characteristic parameters include: Step S580: Input the plasticity characteristic parameters into the preset plasticity characteristic parameter-evaluation level mapping relationship, obtain the process evaluation level corresponding to the plasticity characteristic parameters, and output it.

[0062] Specifically, the preset mapping relationship between plasticity characteristic parameters and evaluation levels is as follows: Figure 8 As shown, the corresponding evaluation level is obtained and output based on the calculated plasticity characteristic parameters.

[0063] The above-mentioned low-cost and rapid real-time measurement method for measuring the plasticity of ceramic clay can effectively shorten the testing time, controlling the complete testing time to 2-3 minutes, effectively improving testing efficiency. Moreover, the testing system has a simple structure and has a significant cost advantage compared to existing instruments.

[0064] Those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium. When executed, the computer program can include the processes of the embodiments described above. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, etc., and are not limited to these.

[0065] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0066] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A low-cost, rapid real-time measurement system for measuring the plasticity of ceramic clay, characterized in that, include: The mechanical actuator is used to squeeze the mud sample to be tested (5) along a preset direction, so that the mud sample to be tested will deform. The sensing and detection unit is used to collect displacement data of the mechanical actuator in a preset direction, as well as the force data of the mud sample (5) under test during deformation, and output force-displacement change data. The system also includes a control processing unit connected to the mechanical execution unit for controlling the mechanical execution unit to squeeze the mud sample (5) to be tested, and a sensing and detection unit for acquiring the force-displacement change data and calculating the plastic characteristic parameters of the mud sample (5) to be tested based on the force-displacement change data.

2. The low-cost, rapid real-time measurement system for measuring the plasticity of ceramic clay according to claim 1, characterized in that, The mechanical actuator includes a precision linear slide (1) and a parallel plate extrusion mechanism (2). The parallel plate extrusion mechanism (2) includes a loading section (21) and an extrusion section (22). The working plane of the loading section (21) is parallel to the working plane of the extrusion section (22) and is located at one end of the precision linear slide (1). The extrusion section (22) is connected to the precision linear slide (1) and is driven by the precision linear slide (1) to move towards or away from the loading section (21).

3. The low-cost, rapid real-time measurement system for measuring the plasticity of ceramic clay according to claim 2, characterized in that, The precision linear slide (1) includes a vertically arranged ball screw (11), a slider (12) threadedly connected to the ball screw (11), and a stepper motor (13) connected to one end of the ball screw (11). The extrusion part (22) is fixedly connected to the slider (12). The stepper motor (13) is connected to the control processing unit. The control processing unit outputs a motor drive signal to control the stepper motor (13) to rotate, so that the extrusion part (22) moves along the axial direction of the ball screw (11).

4. The low-cost, rapid real-time measurement system for measuring the plasticity of ceramic clay according to claim 2 or 3, characterized in that, The sensing and detection unit includes a strain gauge pressure sensor and an ADC module. The strain gauge pressure sensor is disposed on the working surface of the extrusion section (22). The ADC is connected to the strain gauge pressure sensor to sample the analog signal output by the strain gauge pressure sensor and output the force data in the form of a digital signal.

5. The low-cost, rapid real-time measurement system for measuring the plasticity of ceramic clay according to claim 4, characterized in that, The sensing and detection unit includes a stepper motor (13) subdivision position detection module, which is used to detect the step angle of the output shaft rotation of the stepper motor (13) and output the step angle pulse signal to the control processing unit. The control processing unit calculates the displacement data based on the step angle pulse signal.

6. A low-cost, rapid real-time measurement method for measuring the plasticity of ceramic clay, applied to the low-cost, rapid real-time measurement system for measuring the plasticity of ceramic clay as described in any one of claims 1 to 5, characterized in that, include: Output a preset initialization command to restore the low-cost, rapid real-time measurement system for measuring the plasticity of ceramic clay to its initial state; Output a first control command to the mechanical execution unit so that the mechanical execution unit moves in a preset direction. During the movement, a preset intelligent contact recognition algorithm is used to determine whether the mechanical execution unit has come into contact with the mud sample to be tested (5). If so, the second control command is output to the mechanical execution unit so that the mechanical execution unit squeezes the mud sample (5) to be tested along the preset direction, and continuously collects the displacement data of the mechanical execution unit in the preset direction and the force data of the mud sample (5) to be tested during the deformation process during the squeezing process. The displacement data is matched one-to-one with the force data to obtain force-displacement change data; The plastic characteristic parameters of the mud sample (5) to be tested are calculated based on the force-displacement change data, and the process evaluation level of the mud sample (5) to be tested is obtained and output based on the plastic characteristic parameters.

7. The low-cost, rapid, real-time measurement method for the plasticity of ceramic clay according to claim 6, characterized in that, The preset intelligent contact recognition algorithm includes the following steps: The force data output by the sensing and detection unit is continuously read during the movement of the mechanical actuator; Determine whether the force data is greater than a preset contact judgment threshold; If so, it means that the mud sample to be tested (5) has been contacted; Otherwise, it indicates that the tested mud sample (5) has not been contacted.

8. The low-cost, rapid, real-time measurement method for the plasticity of ceramic clay according to claim 7, characterized in that, The specific steps for calculating the plastic characteristic parameters of the tested clay sample (5) based on the force-displacement change data include: Based on the force-displacement change data, determine whether the displacement data is greater than a preset displacement threshold; If so, calculate the real-time rate of change of force-displacement change data after the displacement data exceeds the preset displacement threshold; Determine whether the real-time rate of change is less than the product of a preset threshold coefficient and a preset baseline slope; If so, it means that the force-displacement change data corresponding to the real-time change rate is the yield point force-displacement change data of the mud sample (5) to be tested.

9. The low-cost, rapid, real-time measurement method for the plasticity of ceramic clay according to claim 8, characterized in that, The specific steps for calculating the plastic characteristic parameters of the tested clay sample (5) based on the force-displacement change data also include: The yield stress of the tested mud sample (5) is calculated based on the yield point force-displacement variation data; The apparent viscosity is calculated based on the instantaneous plate spacing and instantaneous compression velocity of the mechanical actuator at the time corresponding to the yield point force-displacement change data. The plastic characteristic parameters are calculated based on the yield stress and the apparent viscosity.

10. The low-cost, rapid, real-time measurement method for the plasticity of ceramic clay according to any one of claims 7-9, characterized in that, The specific steps for obtaining and outputting the process evaluation level of the tested clay sample (5) based on the plasticity characteristic parameters include: The plasticity characteristic parameters are substituted into a preset plasticity characteristic parameter-evaluation level mapping relationship to obtain and output the process evaluation level corresponding to the plasticity characteristic parameters.

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