Fruit and vegetable sample parameter setting method and system for high-capacity food crushing homogenizer

Abstract

The invention relates to the technical field of food detection, in particular to a fruit and vegetable sample parameter setting method and system for a high-capacity food crushing homogenizer. The invention discloses a fruit and vegetable sample parameter setting method of a high-capacity food crushing homogenizer. Acquiring sample parameters of a fruit and vegetable sample to be treated, wherein the sample parameters comprise moisture content, fiber density, target particle size and viscosity; determining a plurality of crushing stages and homogenizing treatment initial parameters corresponding to each stage according to the sample parameters, cutter rotating speed, cutter rotating direction and stage time; adjusting the initial parameter according to the limit working parameter of the homogenizer to obtain an intermediate parameter, wherein the intermediate parameter comprises the adjusted cutter rotating speed, cutter rotating direction and stage time; determining the dwell time of each stage according to the intermediate parameters; and determining the homogeneous parameter of the sample according to the dwell time in the intermediate parameters. The sample homogenizing device can improve the sample homogenizing effect.

Description

Technical Field

[0001] The present invention relates to the technical field of food detection, and in particular to a method and system for setting parameters of fruit and vegetable samples of a large-capacity food crushing and homogenizing machine. Background Art

[0002] In the field of food testing, especially in the process of component analysis, pesticide residue detection, and microbial detection of fruit and vegetable samples, sample homogenization is a key step that affects the accuracy and reproducibility of detection. Traditional homogenization methods usually use a crushing method with fixed parameters, which is difficult to adapt to the physical properties of different types of fruit and vegetable samples (such as moisture content, fiber density, viscosity, etc.), resulting in uneven sample particles and insufficient representativeness after homogenization, which in turn affects the reliability of subsequent test results. For example: high-fiber fruits and vegetables (such as celery and carrots): If the crushing is insufficient, the cell wall may not be completely broken, and the extraction efficiency of the target test object (such as pesticide residues) is low; high-moisture fruits and vegetables (such as tomatoes and strawberries): If the crushing is excessive, it is easy to cause juice splashing or sample oxidation, affecting the stability of the test; sticky samples (such as bananas and mangoes): If the tool rotation direction is not optimized, the sample may adhere to the tool, resulting in uneven homogenization. Summary of the Invention

[0003] In view of this, an embodiment of the present invention provides a method and system for setting parameters of fruit and vegetable samples of a large-capacity food crushing and homogenizing machine to solve the technical problem that the homogenization effect of existing food crushing and homogenizing machines is poor.

[0004] The technical solution adopted in the present invention is:

[0005] In a first aspect, the present invention provides a method for setting parameters of fruit and vegetable samples for a large-capacity food crushing and homogenizing machine, the method comprising:

[0006] S1: Obtaining sample parameters of the fruit and vegetable sample to be processed, wherein the sample parameters include moisture content, fiber density, target particle size and viscosity;

[0007] S2: determining a number of crushing stages and initial homogenization parameters corresponding to each stage based on the sample parameters, wherein the initial homogenization parameters include tool speed, tool rotation direction, and stage time;

[0008] S3: adjusting the initial parameters according to the nominal working parameters of the homogenizer to obtain intermediate parameters, wherein the intermediate parameters include the adjusted tool speed, tool rotation direction and stage time;

[0009] S4: determining the pause time of each stage according to the intermediate parameters;

[0010] S5: Determine the homogenization parameters of the sample based on the dwell time in the intermediate parameters.

[0011] Preferably, the step S2: determining a number of crushing stages and initial homogenization parameters corresponding to each stage according to the sample parameters, wherein the initial homogenization parameters include tool speed, tool rotation direction and stage time, and further includes:

[0012] S21: Determine the number of crushing stages based on the fiber density of the fruit and vegetable sample;

[0013] S22: determining whether to add a knife reversal stage based on the viscosity of the fruit and vegetable sample;

[0014] S23: If the target particle size is within the preset particle size range, a high-speed short-time processing stage is added;

[0015] S24: determining a reference rotation speed of each forward stage according to the sample parameters, wherein the forward stage is a crushing stage in which the cutter rotates forward;

[0016] S25: Determine the time of each forward stage according to the reference rotation speed of each forward stage, the weight of the sample, and the shear energy requirement corresponding to the sample type.

[0017] S26: If there is a tool reversal phase, the reference speed and time of the tool reversal phase are determined according to the reference speed and time of the adjacent forward phase.

[0018] Preferably, the step S24: determining a reference rotation speed of each forward stage according to the sample parameters, wherein the forward stage is a crushing stage in which the cutter rotates forward and includes:

[0019] S241: Determine an upper limit of the rotation speed according to the fiber density;

[0020] S242: Determine a speed correction coefficient based on the water content;

[0021] S243: If the crushing stage is a high-speed short-time processing stage, the speed increase coefficient is determined according to the target particle size;

[0022] S244: if the crushing stage is a non-high-speed short-time processing stage, determining the reference speed according to the speed upper limit and the speed correction coefficient;

[0023] S245: If the crushing stage is a high-speed short-time processing stage, determining the reference speed according to the speed upper limit, the speed correction coefficient, and the speed increasing coefficient;

[0024] S226. Determine the stage time of each forward stage according to the reference rotation speed of each stage, the shear energy requirement corresponding to the sample type, and the weight of the sample.

[0025] S247: If there is a tool reversal phase, the tool speed and phase time of the tool reversal phase are determined according to the tool speed and phase time of the previous forward phase.

[0026] Preferably, the step S3: adjusting the initial parameters according to the nominal working parameters of the homogenizer to obtain the intermediate parameters comprises:

[0027] S31: Determine whether the tool speed in each crushing stage is between the minimum allowable speed and the maximum allowable speed;

[0028] S32: If there is a crushing stage where the tool speed is greater than the maximum safe speed, the tool speed in the corresponding crushing stage is adjusted to a safe speed;

[0029] S33: If there is a crushing stage where the tool rotation speed is less than the minimum rotation speed, the tool rotation speed of the corresponding crushing stage is adjusted to the minimum rotation speed;

[0030] S34: Determine whether the time of each crushing stage exceeds the allowed continuous time length;

[0031] S35: If there is a crushing stage that exceeds the allowed continuous time length, split the corresponding crushing stage into a number of sub-crushing stages that are less than or equal to the allowed continuous time length;

[0032] S35: If a reversal stage is added, the reversal stage is set between adjacent sub-crushing stages.

[0033] Preferably, the step S4: determining the pause time of each stage according to the intermediate parameters further comprises:

[0034] S41: determining the initial pause duration of each stage according to the sample parameters;

[0035] S42: adjusting the initial pause duration of each stage according to the intermediate parameters;

[0036] S43: The sum of the time of all crushing stages of the homogenizer crushing station is taken as the cumulative working time of the station;

[0037] S44: The sum of all pause times of the homogenizer crushing station is taken as the cumulative pause time;

[0038] S45: Calculating the duty ratio according to the accumulated pause time and accumulated working time;

[0039] S46: When the duty ratio exceeds the preset duty ratio, the total duration of the supplementary pause is calculated based on the duty ratio and the preset duty ratio;

[0040] S47: Evenly distribute the total duration of the supplementary pause to each pause stage.

[0041] Preferably, before S41: determining the initial pause duration of each stage according to the sample parameters, the method further includes:

[0042] S401: Obtaining the tool rotation direction of the previous stage and the tool rotation direction of the next stage in two adjacent crushing stages;

[0043] S402: determining whether the tool rotation direction in the previous stage is opposite to the tool rotation direction in the next stage;

[0044] S403: If the opposite is true, a pause phase is inserted between the previous phase and the next phase.

[0045] Preferably, before S41: determining the initial pause duration of each stage according to the sample parameters, the method further includes:

[0046] S404: Obtaining the tool rotation speed of the first stage and the tool rotation speed of the second stage in two adjacent crushing stages;

[0047] S405: determining whether the ratio of the tool speed increment in the subsequent stage to the tool speed in the previous stage exceeds a preset ratio;

[0048] S406: If yes, insert a pause phase between the previous phase and the next phase.

[0049] Preferably, before S41: determining the initial pause duration of each stage according to the sample parameters, the method further includes:

[0050] S407: Obtaining the upper limit of the continuous operation time of the homogenizer;

[0051] S408: Obtain safety factor;

[0052] S409: Determine a safe operation time according to the upper limit of the continuous operation time and the safety factor;

[0053] S4010: Determine whether there is a crushing stage whose operating time exceeds the safe operating time;

[0054] S4011: If yes, insert a pause phase after the crushing phase;

[0055] Preferably, before S41: determining the initial pause duration of each stage according to the sample parameters, the method further includes:

[0056] S4012: Determine whether the viscosity of the processed sample is greater than a preset viscosity;

[0057] S4013: Determine whether the oil content of the processed sample is greater than a preset oil content;

[0058] S4014: Determine whether the moisture content of the processed sample is greater than a preset moisture content;

[0059] S4015: If the viscosity of the sample is greater than a preset viscosity, or the oil content is greater than a preset oil content, or the moisture content is greater than a preset moisture content, a pause phase is inserted between two adjacent phases.

[0060] In a second aspect, the present invention provides a parameter setting system for fruit and vegetable samples of a large-capacity food crushing and homogenizing machine. The system includes a control circuit and a parameter input device. The parameter input device is electrically connected to the control circuit, and the control circuit is electrically connected to a drive motor of the large-capacity food crushing and homogenizing machine. The control circuit includes at least one processor, at least one memory, and computer program instructions stored in the memory. When the computer program instructions are executed by the processor, the method described in the first aspect is implemented.

[0061] Beneficial effects:

[0062] The large-capacity food crushing homogenizer fruit and vegetable sample parameter setting method and system of the present invention can automatically match the optimal homogenization treatment scheme according to the physical properties of different samples by obtaining key parameters such as moisture content, fiber density, target particle size and viscosity of fruit and vegetable samples, significantly improving the consistency and reliability of the homogenization effect. The present invention adopts a multi-stage crushing strategy to dynamically adjust the tool speed, rotation direction and stage time according to different sample characteristics, effectively avoiding the problem of excessive crushing or insufficient crushing, and ensuring that the uniformity of the particles after homogenization meets the detection requirements. The present invention adjusts the initial parameters in combination with the rated operating parameters of the homogenizer to avoid equipment overload operation, extend the service life, and improve processing efficiency. The present invention reduces problems such as sample splashing, knife sticking or local overheating by optimizing the pause time and stage transition strategy, ensuring that the homogenized sample has better representativeness and stability, thereby improving the accuracy and reproducibility of subsequent detection. In addition, staged processing and reasonable pause time setting can reduce energy consumption, avoid ineffective operation, and improve the overall efficiency of the homogenization process, which is particularly suitable for continuous processing of large-capacity samples. The present invention reduces reliance on manual experience through parameterized settings, allowing different laboratories or operators to obtain consistent homogenization effects and meet the requirements of standardized testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work, and these are all within the scope of protection of the present invention.

[0064] Figure 1 This is a flow chart of a method for setting parameters for fruit and vegetable samples in a large-capacity food crushing and homogenizing machine according to the present invention;

[0065] Figure 2A schematic flow chart of a method for determining initial parameters for homogenization processing according to the present invention;

[0066] Figure 3 A schematic flow chart of a method for determining a reference speed according to the present invention;

[0067] Figure 4 A schematic flow chart of a method for determining intermediate parameters according to the present invention;

[0068] Figure 5 A schematic flow chart of a method for determining a pause phase time according to the present invention;

[0069] Figure 6 Schematic diagram of the flow of the method for determining whether to insert a pause phase according to the rotation direction of the tool according to the present invention;

[0070] Figure 7 Schematic diagram of a flow chart of a method for determining whether to insert a pause phase according to the rotation speeds of front and rear tools according to the present invention;

[0071] Figure 8 Schematic diagram of a flow chart of a method for determining whether to insert a pause phase according to continuous running time according to the present invention;

[0072] Figure 9 Schematic diagram of a flow chart of a method for determining whether to insert a pause phase according to sample parameters according to the present invention;

[0073] Figure 10 It is a schematic diagram of the three-dimensional structure of the large-capacity food crushing and homogenizing machine of the present invention.

[0074] Parts and their numbers in the picture:

[0075] Base 1, first crushing and homogenizing component 2, second crushing and homogenizing component 3. DETAILED DESCRIPTION

[0076] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. It should be noted that, in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further limitations, elements defined by the phrase "comprising..." do not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising the elements. The embodiments of the present invention and the features thereof may be combined with each other if there is no conflict, and all are within the scope of protection of the present invention.

[0077] Example 1

[0078] like Figure 1 As shown, this embodiment provides a method for setting parameters of fruit and vegetable samples for a large-capacity food crushing and homogenizing machine, the method comprising:

[0079] S1: Obtaining sample parameters of the fruit and vegetable sample to be processed, wherein the sample parameters include moisture content, fiber density, target particle size and viscosity;

[0080] The sample parameters of fruit and vegetable samples reflect their properties related to homogenization. Moisture content refers to the percentage of water in fruits and vegetables. High-moisture samples (such as tomatoes) are easy to crush but may produce too much juice, so the rotation speed needs to be reduced to avoid splashing. Fiber density indicates the tightness of the plant cell wall structure. High-fiber samples (such as celery) require higher rotation speeds or longer crushing times. The target particle size is the ideal size of the particles after homogenization. Smaller particle sizes require higher rotation speeds or multi-stage processing. Viscosity reflects fluid resistance. High-viscosity samples (such as banana puree) may require intermittent processing or reverse rotation of the knife to prevent sticking. These parameters jointly affect energy consumption, processing efficiency, and final texture.

[0081] S2: determining a number of crushing stages and initial homogenization parameters corresponding to each stage based on the sample parameters, wherein the initial homogenization parameters include tool speed, tool rotation direction, and stage time;

[0082] To improve the homogenization effect, this embodiment can adopt a staged, step-by-step crushing method, with different homogenization parameters applied to each stage. This step first sets several crushing stages based on sample parameters that reflect the homogenization properties of the sample. Then, the corresponding parameters for each crushing stage are preliminarily set, i.e., the aforementioned initial homogenization parameters. Each stage lasts for the aforementioned stage duration.

[0083] S3: After adjusting the initial parameters of tool speed, tool rotation direction and stage time according to the rated working parameters of the homogenizer, intermediate parameters are obtained, and the intermediate parameters include the adjusted tool speed, tool rotation direction and stage time; the rated working parameters of the homogenizer include the tool speed range, power range, and continuous operation time range.

[0084] S4: determining the pause time of each stage according to the intermediate parameters;

[0085] The dwell time is the time the cutters stop rotating after one crushing stage. After the dwell time ends, the next crushing stage begins and the cutters resume rotating. Once the intermediate parameters for each stage are determined, the dwell time can be adjusted to further enhance the homogenization effect.

[0086] S5: Determine the homogenization parameters of the sample based on the dwell time of the intermediate parameters.

[0087] like Figure 2 As shown, in this embodiment, the step S2: determining a number of crushing stages and initial homogenization parameters corresponding to each stage according to the sample parameters, wherein the initial homogenization parameters include tool speed, tool rotation direction, and stage time.

[0088] S21: Determine the number of crushing stages based on the fiber density of the fruit and vegetable sample;

[0089] Fruits and vegetables with high fiber density (such as carrots) need to be crushed in multiple stages. Fruits and vegetables with low fiber density and loose structure (such as tomatoes and watermelons) generally require 1 to 2 crushing stages to complete the crushing.

[0090] S22: determining whether to add a knife reversal stage based on the viscosity of the fruit and vegetable sample;

[0091] Some highly viscous samples (such as bananas) are prone to sticking to the knife or accumulating on the container wall. In this embodiment, a reversal stage is introduced to assist in turning the material to avoid sticking to the knife or causing the sample to accumulate on the container wall.

[0092] S23: If the target particle size is within the preset particle size range, a high-speed short-time processing stage is added;

[0093] The target particle size refers to the sample's desired particle size after homogenization and is a crucial parameter for homogenization. If the target particle size is small, a high-speed, short-duration processing stage is required, processing the sample at a higher speed in a shorter period of time to achieve the target particle size. During this high-speed, short-duration processing stage, the tool speed is 1.5 to 4 times that of the standard stage, and the processing time is 20% to 55% of the standard stage time. If the target particle size is coarse or medium, a high-speed, short-duration processing stage is not necessary.

[0094] S24: determining a reference rotation speed of each forward stage according to the sample parameters, wherein the forward stage is a crushing stage in which the cutter rotates forward;

[0095] like Figure 3 As shown, the method for determining the reference speed in each forward phase mainly includes:

[0096] S241: Determine an upper limit of the rotation speed according to the fiber density;

[0097] The relationship between the upper speed limit and the fiber density can be determined through experiments. The higher the fiber density, the higher the upper speed limit.

[0098] S242: Determine a speed correction coefficient based on the water content;

[0099] The moisture content and the rotation speed correction coefficient are negatively correlated. When the moisture content is low, appropriately reducing the rotation speed can effectively prevent the sample from liquefying and splashing.

[0100] S243: If the crushing stage is a high-speed short-time processing stage, the speed increase coefficient is determined according to the target particle size;

[0101] The speed increasing coefficient refers to the ratio of the tool speed in the high-speed stage to the tool speed in the normal stage. The smaller the target particle size, the higher the increasing coefficient.

[0102] S244: if the crushing stage is a non-high-speed short-time processing stage, determining the reference speed according to the speed upper limit and the speed correction coefficient;

[0103] The reference speed is the product of the speed upper limit corresponding to each stage and the speed correction coefficient.

[0104] S245: If the crushing stage is a high-speed short-time processing stage, the reference speed is determined according to the speed upper limit, the speed correction coefficient and the speed increasing coefficient.

[0105] The reference speed is the product of the speed upper limit corresponding to each stage, the speed correction coefficient and the speed increase coefficient.

[0106] S246. Determine the stage time of each forward stage according to the reference rotation speed of each stage, the shear energy requirement corresponding to the sample type, and the weight of the sample.

[0107] The shear energy requirement refers to the amount of shear energy required to homogenize the sample, which can be determined through prior experimental testing. The greater the shear energy requirement, the longer the stage time, and the heavier the sample, the longer the stage time.

[0108] S247: If there is a tool reversal phase, the tool speed and phase time of the tool reversal phase are determined according to the tool speed and phase time of the previous forward phase.

[0109] The speed of the reverse rotating tool only needs to overcome the adhesion and inertia of the sample. The speed is lower than the forward rotation speed. The reverse rotation speed can be multiplied by the reverse coefficient coefficient based on the forward rotation speed of the previous stage. The reverse speed should be sufficient to turn the material but with low power consumption. The time should be based on the principle of allowing the material to be fully turned but not overheated. The reverse rotation speed generally does not exceed one-third of the forward rotation speed of the previous stage.

[0110] like Figure 4 As shown, in this embodiment, the intermediate parameters obtained by adjusting the initial parameters of the tool speed and stage time according to the rated working parameters of the homogenizer in S3 include:

[0111] S31: Determine whether the tool speed in each crushing stage is between the minimum allowable speed and the maximum allowable speed;

[0112] S32: If there is a crushing stage where the tool speed is greater than the maximum safe speed, the tool speed in the corresponding stage is adjusted to the safe speed;

[0113] After adjustment in this step, it can be ensured that the tool speed in all crushing stages will not exceed the safe speed.

[0114] S33: If there is a crushing stage where the tool rotation speed is less than the minimum rotation speed, the tool rotation speed of the corresponding stage is adjusted to the minimum rotation speed;

[0115] After adjustment in this step, the speed of all stages will not be lower than the minimum speed, which can ensure both the crushing effect and safety.

[0116] S34: Determine whether the time of each crushing stage exceeds the allowed continuous time length;

[0117] The continuous time length is the actual length of continuous rotation of the tool.

[0118] S35: If there is a crushing stage that exceeds the allowed continuous time length, split the corresponding crushing stage into a number of sub-crushing stages that are less than or equal to the allowed continuous time length;

[0119] Crushing stages that exceed the allowed continuous time length are split into relatively shorter sub-crushing stages, which can not only ensure the total crushing time but also avoid damage caused by continuous rotation of the cutter.

[0120] S35: If a reversal stage is added, the reversal stage is set between adjacent sub-crushing stages, which saves time and avoids the running time of a single stage being too long. The tool speed and stage time of the reversal stage can be set in the same way as the forward stage.

[0121] like Figure 5 As shown, the step S4: determining the pause time of each stage according to the intermediate parameters further includes:

[0122] S41: determining the initial pause duration of each stage according to the sample parameters;

[0123] For example, the higher the viscosity of the sample, the longer the initial pause time of each stage, and vice versa. For another example, the higher the water content of the sample, the shorter the initial pause time of each stage, and vice versa.

[0124] S42: adjusting the initial pause duration of each stage according to the intermediate parameters, specifically including:

[0125] S421: Obtaining the tool speed of the previous stage;

[0126] S422: Obtaining the maximum safe speed of the tool;

[0127] The maximum safe speed of the cutter is set by the homogenizer manufacturer.

[0128] S423: If the tool rotation speed in the previous stage is greater than or equal to 90% of the maximum safe rotation speed, a first preset duration is added to the initial pause duration; wherein the first preset duration is 3 to 5 seconds.

[0129] S424: If the tool rotation speed in the previous stage is less than or equal to 60% of the maximum safe rotation speed, a second preset time is reduced based on the initial pause time; wherein the second preset time is 3 to 5 seconds.

[0130] If the initial pause time is reduced to less than the minimum allowable pause time of the homogenizer, the adjusted pause time is set as the minimum allowable pause time.

[0131] S424: If the duration of the previous stage is greater than or equal to the first duration threshold, increase the pause duration;

[0132] If the allowed time for the previous segment is longer, a longer buffer time is required, so the pause time can be increased by 4 to 6 seconds.

[0133] S425: If the next stage is a short high-speed stage, a buffer of at least 3 seconds is reserved to avoid a sudden and significant increase in speed;

[0134] S43: The sum of the time of all crushing stages of the homogenizer crushing station is taken as the cumulative working time of the station;

[0135] The homogenizer used in this embodiment has multiple homogenization processing stations. This step requires obtaining the cumulative working time of each station.

[0136] S44: The sum of all pause times of the homogenizer crushing station is taken as the cumulative pause time;

[0137] This step obtains the cumulative pause time of a single workstation.

[0138] S45: Calculating the duty ratio according to the accumulated pause time and accumulated working time;

[0139] The above-mentioned duty ratio can be calculated by dividing the working time by the sum of the working time and the pause time.

[0140] S46: When the duty ratio exceeds the preset duty ratio, the total supplementary pause time is calculated based on the duty ratio and the preset duty ratio; the supplementary pause time is added to the aforementioned calculated cumulative pause time to obtain the adjusted cumulative pause time, and the duty ratio calculated according to the adjusted cumulative pause time should be less than or equal to the preset duty ratio.

[0141] S47: The total duration of the supplementary pause is evenly distributed to each pause stage, thereby increasing the time of each pause stage and preventing the homogenizer from running too frequently.

[0142] This embodiment can consider inserting a pause phase in different situations, such as Figure 6 As shown, before S41: determining the initial pause duration of each stage according to the sample parameters, this embodiment further includes:

[0143] S401: Obtaining the tool rotation direction of the previous stage and the tool rotation direction of the next stage in two adjacent crushing stages;

[0144] S402: determining whether the tool rotation direction in the previous stage is opposite to the tool rotation direction in the next stage;

[0145] S403: If the opposite is true, a pause phase is inserted between the previous phase and the next phase.

[0146] If the tool rotation directions of two adjacent stages are opposite, a pause phase is inserted to eliminate the impact caused by the tool's reverse rotation. If the tool rotation directions of two adjacent stages are continuous and in the same direction, a pause phase can be omitted.

[0147] For example Figure 7 As shown, before S41: determining the initial pause duration of each stage according to the sample parameters, this embodiment further includes:

[0148] S404: Obtaining the tool rotation speed of the first stage and the tool rotation speed of the second stage in two adjacent crushing stages;

[0149] S405: determining whether the ratio of the tool speed increment in the subsequent stage to the tool speed in the previous stage exceeds a preset ratio;

[0150] If the ratio of the tool speed increment in the latter stage to the tool speed in the previous stage exceeds a preset ratio, it indicates that a jump in the speed has occurred.

[0151] S406: If yes, insert a pause phase between the previous phase and the next phase.

[0152] This step inserts a pause phase when the tool speed jumps, thereby eliminating the impact caused by the speed jump.

[0153] For example Figure 8 As shown, before S41: determining the initial pause duration of each stage according to the sample parameters, this embodiment further includes:

[0154] S407: Obtaining the upper limit of the continuous operation time of the homogenizer;

[0155] The upper limit of the continuous operation time of the homogenizer is the maximum continuous operation time allowed by the manufacturer.

[0156] S408: Obtain safety factor;

[0157] The safety factor can be selected based on experience, for example, 0.6 to 0.68 can be selected.

[0158] S409: Determine a safe operation time according to the upper limit of the continuous operation time and the safety factor;

[0159] The safe operating time is equal to the product of the safety factor and the upper limit of the continuous operating time.

[0160] S4010: Determine whether there is a crushing stage whose operating time exceeds the safe operating time;

[0161] This step verifies all crushing stages to determine whether there is a crushing stage whose operating time exceeds the safe operating time.

[0162] S4011: If yes, insert a pause phase after the crushing phase;

[0163] For a crushing phase that runs for a long time and exceeds the safe running time, this step inserts a pause phase for caching and adjustment after the crushing phase ends.

[0164] For example Figure 9 As shown, before S41: determining the initial pause duration of each stage according to the sample parameters, this embodiment further includes:

[0165] S4012: Determine whether the viscosity of the processed sample is greater than a preset viscosity;

[0166] S4013: Determine whether the oil content of the processed sample is greater than a preset oil content;

[0167] S4014: Determine whether the moisture content of the processed sample is greater than a preset moisture content;

[0168] S4015: If the viscosity of the sample is greater than a preset viscosity, or the oil content is greater than a preset oil content, or the moisture content is greater than a preset moisture content, a pause phase is inserted between two adjacent phases.

[0169] This embodiment compares the viscosity, oil content, and moisture content of the sample, and inserts a pause phase for buffering when the viscosity, oil content, and moisture content of the sample exceed their respective preset values, thereby avoiding heat accumulation caused by long-term high-intensity operation of the homogenizer.

[0170] Example 2

[0171] like Figure 10 As shown, this embodiment provides a parameter setting system for fruit and vegetable samples in a large-capacity food crushing and homogenizing machine. The system includes a control circuit and a parameter input device. The parameter input device is electrically connected to the control circuit, which is electrically connected to the drive motor of the large-capacity food crushing and homogenizing machine. The control circuit includes at least one processor, at least one memory, and computer program instructions stored in the memory. When the computer program instructions are executed by the processor, the method described in Example 1 is implemented. The parameter input device can be a touch screen. The large-capacity food crushing and homogenizing machine in this embodiment mainly includes a base 1, several groups of first crushing and homogenizing components 2, and several groups of second crushing and homogenizing components 3.

[0172] The base 1 serves as the installation base for other components of the food crushing and homogenizing machine;

[0173] In this embodiment, a plurality of first crushing and homogenizing assemblies 2 are mounted on the base 1. The number of the first crushing and homogenizing assemblies 2 is greater than or equal to 2. In this embodiment, the first crushing and homogenizing assemblies 2 are used to crush and homogenize fruits and vegetables with a large crushing amount.

[0174] Each set of first crushing and homogenizing components 2 includes a first driver, a first cutter and a first container, wherein the output end of the first driver is connected to the first cutter, and the first cutter is located inside the container;

[0175] Several sets of second crushing and homogenizing assemblies 3 are mounted on the base 1. The second crushing and homogenizing assemblies 3 include a second cutter and a second container. The output end of the second motor is connected to the second cutter, which is located inside the second container. In this embodiment, the second crushing and homogenizing assemblies 3 are used to crush and homogenize nut samples. The number of first crushing and homogenizing assemblies 2 is greater than or equal to one.

[0176] In this embodiment, the capacity of the first container is greater than that of the second homogenizing container; this embodiment uses a homogenizing component with a larger capacity container to crush and homogenize fruit and vegetable samples, which can process more fruit and vegetable samples at a time, thereby improving the processing efficiency. In addition, the homogenization effect of the sample is further improved after the capacity of the homogenizing component container is increased. Because the present application adopts a multiple first crushing and homogenizing component 2, different fruit and vegetable samples can be crushed and homogenized simultaneously at multiple workstations, thereby further improving the sampling efficiency of fruit and vegetable samples.

[0177] The control circuit of this embodiment is electrically connected to each of the first crushing and homogenizing components 2 and the second homogenizing component, so that the control circuit can control the operation of the first crushing and homogenizing component 2 according to the homogenization parameters obtained in Example 1.

[0178] In order to automatically determine whether the sample has been cut into small segments that meet the requirements before formal homogenization and crushing, this embodiment can also perform preprocessing before S1:, specifically including:

[0179] S011: Control the tool to idle at a first preset speed, and record the motor current during idling as a reference current;

[0180] In this step, without placing any sample in the container, the cutter is allowed to idle for a period of time at a first preset speed, i.e., the normal speed of the coarse crushing stage, and the motor current characteristics at this time are recorded and saved, thereby obtaining a no-load current benchmark;

[0181] S012: After placing the sample in the container, controlling the tool to rotate at a second preset speed, and recording the motor current as a second current, wherein the second preset speed is lower than the first preset speed;

[0182] In this step, after placing the sample in the container, the tool is switched to the second preset speed, which is significantly lower than the first preset speed, and two short test cuts are performed in a gentler cutting method;

[0183] S013: Compare the second current with the first current;

[0184] Specifically, the current value of the second current is compared with the current value of the first current.

[0185] S014: If the difference between the second current and the first current is within a preset range, controlling the cutter to perform coarse crushing at a first preset rotation speed;

[0186] The preset range indicates the absolute value of the difference between the second and first currents allowed. If the difference is within the preset range, the current after the test cut is nearly identical to the baseline current. This indicates that, under the relatively mild cutting force of the second preset, the tool's power output was not significantly increased due to material resistance, equivalent to extremely low load when the tool is rotating freely. Only when the sample itself is sufficiently small, that is, each small segment is very small and has extremely low resistance, will the tool experience no significant load during the test cut, allowing the next stage of coarse crushing to proceed.

[0187] S03: If the difference between the second current and the first current exceeds a preset range, a prompt message indicating that the sample is too large is sent;

[0188] If the current after the test cut is significantly higher than the reference current, it means that the tool still needs to output additional torque to cut the large sample at the second preset speed. In this case, the operator is prompted to cut the sample into smaller pieces before inserting or retry cutting.

[0189] Only after passing the trial cutting judgment at the second preset speed, the system will automatically switch back to the first preset speed and start the continuous process from coarse crushing to fine homogenization. Otherwise, a prompt will be given and the process will be terminated.

[0190] S021: continuously detecting the loaded current when the cutter performs coarse crushing at a first preset speed;

[0191] S022: Perform moving average on the loaded current sampled in real time to obtain a smoothed current sequence;

[0192] During the coarse crushing process, the contact between the cutter and the material causes rapid current fluctuations due to factors such as tool cutting impact and power supply jitter. This step applies a moving average to these signals to effectively suppress transient noise and extract the true load trend.

[0193] S023: Divide the smoothed current sequence according to a first preset time window and a second preset time window, where the first preset time window is larger than the second preset time window.

[0194] The first preset time window is a time period with a longer time span, which is used to measure the overall load level, while the second preset time window is a time period with a shorter time span, which is used to capture instantaneous load fluctuations.

[0195] S024: Calculating an average load increment based on the current sequence divided into the first preset time window and the loaded current;

[0196] The average load increment is the difference between the average current in the first preset time window and the reference current.

[0197] S025: Calculating the current fluctuation amplitude within the second preset time window;

[0198] The fluctuation amplitude is the difference between the maximum current and the minimum current in the second preset time window.

[0199] This embodiment converts real-time current into quantitative indicators of overall load and instantaneous fluctuations. Using a dual-window approach, it can simultaneously measure overall load reduction and determine whether the impact has disappeared during the coarse crushing process. The first preset time window, the long window, focuses on macroscopic load reduction, while the second preset time window, the short window, identifies local impact attenuation.

[0200] S026: Compare the average load increment with a load increment threshold, and compare the fluctuation amplitude with a fluctuation threshold;

[0201] S027: If the average load increment is lower than the load increment threshold and the fluctuation amplitude is lower than the fluctuation threshold, calculating a change trend of the smoothed current sequence within a first preset time window to obtain a trend value;

[0202] The trend value refers to the rate of change of the long-window average load increment over time, or the slope of the long-window average load increment curve. Only when the load is low and the impact is minimal should the stabilization of the coarse crushing process be checked. A trend value approaching zero indicates the crushing process is nearing completion. When both the average load increment and the fluctuation amplitude are below the corresponding thresholds, the slope of the long-window average load can be calculated using linear regression or a differencing algorithm to output the trend value.

[0203] If any one of the indicators of average load increment and fluctuation amplitude is higher than the corresponding threshold again, the trend detection is canceled and returns to the continuous monitoring state.

[0204] By adding the detection of the changing trend of the smooth current sequence in the case of abnormal indicators, premature switching when the load is still slowly decreasing can be avoided, reducing the impact of insufficient fragmentation on the homogenization effect.

[0205] This embodiment can ensure that trend calculation is triggered only when the load actually enters a stable range through threshold determination of the average load increment and the fluctuation amplitude, thereby reducing the probability of system misjudgment.

[0206] S028: When the trend value is in the zero approximate interval, start continuous timing to obtain the accumulated stable time;

[0207] The zero approximate interval is an interval where the trend value is close to zero. In specific implementation, an upper limit value lup of the zero interval can be set based on experience. When the trend value is greater than or equal to -lup and less than or equal to lup, it is in the zero approximate interval.

[0208] S029: If the accumulated stable time is longer than the preset time threshold, the process enters the subsequent formal crushing stage, otherwise, repeat steps S021 to S029.

[0209] If coarse crushing is not complete, occasional disturbances may temporarily cause the average load increment to fall below the load increment threshold and the fluctuation amplitude to fall below the fluctuation threshold. The duration of this stability is calculated by accumulating the time. Only when this stability is maintained for a certain period of time can it be confirmed that the target particle size has been achieved.

[0210] This embodiment automatically determines whether the sample has been cut into small segments through current changes during the trial cutting process, avoiding reliance on the operator's subjective judgment and improving the consistency and reliability of the judgment. In the coarse crushing stage, dual-window current feature analysis and trend judgment are introduced to achieve dynamic identification and adaptive switching of the material state without manual intervention. If the trial cutting fails, the system automatically blocks the subsequent process to prevent large pieces of material from entering the high-speed cutting area and protect the safe operation of the tool and motor. This embodiment comprehensively considers the average load, fluctuation amplitude and change trend to determine whether the material has been sufficiently refined, and through continuous confirmation, avoids misjudgment due to short-term fluctuations.

[0211] The above is a detailed introduction to the method and system for setting parameters of fruit and vegetable samples for a large-capacity food crushing and homogenizing machine provided by an embodiment of the present invention.

[0212] It should be understood that the present invention is not limited to the specific configurations and processes described above and illustrated in the figures. For the sake of brevity, a detailed description of known methods is omitted. In the above embodiments, several specific steps are described and illustrated as examples. However, the method of the present invention is not limited to the specific steps described and illustrated. Those skilled in the art may make various changes, modifications, and additions, or change the order of the steps after understanding the spirit of the present invention.

[0213] The functional blocks shown in the above-described block diagram can be implemented as hardware, software, firmware or a combination thereof. When implemented in hardware, it can be, for example, an electronic circuit, an application specific integrated circuit (ASIC), appropriate firmware, a plug-in unit, a function card or the like. When implemented in software, the elements of the present invention are programs or code segments that are used to perform the required tasks. The program or code segment can be stored in a machine-readable medium, or transmitted on a transmission medium or a communication link by a data signal carried in a carrier wave. "Machine-readable medium" can include any medium capable of storing or transmitting information. Examples of machine-readable media include electronic circuits, semiconductor memory devices, ROMs, flash memories, erasable ROMs (EROMs), floppy disks, CD-ROMs, optical disks, hard disks, optical fiber media, radio frequency (RF) links, etc. The code segment can be downloaded via a computer network such as the Internet, an intranet, etc.

[0214] It should also be noted that the exemplary embodiments described herein describe methods or systems based on a series of steps or devices. However, the present invention is not limited to the order of the steps described above. In other words, the steps may be performed in the order described in the embodiments, or in a different order, or several steps may be performed simultaneously.

[0215] The above description is only a specific embodiment of the present invention. Those skilled in the art will clearly understand that for the convenience and brevity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present invention is not limited to this. Any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention.

Claims

1. The parameter setting method of large-capacity food crushing and homogenizing machine for fruit and vegetable samples is characterized in that: The method comprises: S1: Obtaining sample parameters of the fruit and vegetable sample to be processed, wherein the sample parameters include moisture content, fiber density, target particle size and viscosity; S2: determining a number of crushing stages and initial homogenization parameters corresponding to each stage based on the sample parameters, wherein the initial homogenization parameters include tool speed, tool rotation direction, and stage time; S3: adjusting the initial parameters according to the nominal working parameters of the homogenizer to obtain intermediate parameters, wherein the intermediate parameters include the adjusted tool speed, tool rotation direction and stage time; S4: determining the pause time of each stage according to the intermediate parameters; S5: Determine the homogenization parameters of the sample based on the dwell time in the intermediate parameters.

2. The method for setting parameters of fruit and vegetable samples of a large-capacity food crushing and homogenizing machine according to claim 1, characterized in that: S2: Determine several crushing stages and initial parameters of homogenization processing corresponding to each stage according to the sample parameters, wherein the initial parameters of homogenization processing include tool speed, tool rotation direction and stage time. S21: Determine the number of crushing stages based on the fiber density of the fruit and vegetable sample; S22: determining whether to add a knife reversal stage based on the viscosity of the fruit and vegetable sample; S23: If the target particle size is within the preset particle size range, a high-speed short-time processing stage is added; S24: determining a reference rotation speed of each forward stage according to the sample parameters, wherein the forward stage is a crushing stage in which the cutter rotates forward; S25: determining the time of each forward stage according to the reference speed of each forward stage, the weight of the sample, and the shear energy requirement corresponding to the sample type; S26: If there is a tool reversal phase, the reference speed and time of the tool reversal phase are determined according to the reference speed and time of the adjacent forward phase.

3. The method for setting parameters of fruit and vegetable samples of a large-capacity food crushing and homogenizing machine according to claim 2, characterized in that: S24: determining a reference rotation speed of each forward stage according to the sample parameters, wherein the forward stage is a crushing stage in which the cutter rotates forward, including: S241: Determine an upper limit of the rotation speed according to the fiber density; S242: Determine a speed correction coefficient based on the water content; S243: If the crushing stage is a high-speed short-time processing stage, the speed increase coefficient is determined according to the target particle size; S244: if the crushing stage is a non-high-speed short-time processing stage, determining the reference speed according to the speed upper limit and the speed correction coefficient; S245: If the crushing stage is a high-speed short-time processing stage, determining the reference speed according to the speed upper limit, the speed correction coefficient, and the speed increasing coefficient; S246, determining the stage time of each forward stage according to the reference speed of each stage, the shear energy requirement corresponding to the sample type, and the weight of the sample; S247: If there is a tool reversal phase, the tool speed and phase time of the tool reversal phase are determined according to the tool speed and phase time of the previous forward phase.

4. The method for setting parameters of fruit and vegetable samples for a large-capacity food crushing and homogenizing machine according to claim 1, characterized in that: The intermediate parameters obtained by adjusting the initial parameters according to the rated working parameters of the homogenizer in S3 include: S31: Determine whether the tool speed in each crushing stage is between the minimum allowable speed and the maximum allowable speed; S32: If there is a crushing stage where the tool speed is greater than the maximum safe speed, the tool speed in the corresponding crushing stage is adjusted to a safe speed; S33: If there is a crushing stage where the tool rotation speed is less than the minimum rotation speed, the tool rotation speed of the corresponding crushing stage is adjusted to the minimum rotation speed; S34: Determine whether the time of each crushing stage exceeds the allowed continuous time length; S35: If there is a crushing stage that exceeds the allowed continuous time length, split the corresponding crushing stage into a number of sub-crushing stages that are less than or equal to the allowed continuous time length; S36: If a reversal stage is added, the reversal stage is set between adjacent sub-crushing stages.

5. The method for setting parameters of fruit and vegetable samples of a large-capacity food crushing and homogenizing machine according to claim 1, characterized in that: The step S4: determining the pause time of each stage according to the intermediate parameters further includes: S41: determining the initial pause duration of each stage according to the sample parameters; S42: adjusting the initial pause duration of each stage according to the intermediate parameters; S43: The sum of the time of all crushing stages of the homogenizer crushing station is taken as the cumulative working time of the station; S44: The sum of all pause times of the homogenizer crushing station is taken as the cumulative pause time; S45: Calculating the duty ratio according to the accumulated pause time and accumulated working time; S46: When the duty ratio exceeds the preset duty ratio, the total duration of the supplementary pause is calculated based on the duty ratio and the preset duty ratio; S47: Evenly distribute the total duration of the supplementary pause to each pause stage.

6. The method for setting parameters of fruit and vegetable samples for a large-capacity food crushing and homogenizing machine according to claim 5, characterized in that: Before S41: determining the initial pause duration of each stage according to the sample parameters, the following steps are also included: S401: Obtaining the tool rotation direction of the previous stage and the tool rotation direction of the next stage in two adjacent crushing stages; S402: determining whether the tool rotation direction in the previous stage is opposite to the tool rotation direction in the next stage; S403: If the opposite is true, a pause phase is inserted between the previous phase and the next phase.

7. The method for setting parameters of fruit and vegetable samples for a large-capacity food crushing and homogenizing machine according to claim 5, characterized in that: Before S41: determining the initial pause duration of each stage according to the sample parameters, the following steps are also included: S404: Obtaining the tool rotation speed of the first stage and the tool rotation speed of the second stage in two adjacent crushing stages; S405: determining whether the ratio of the tool speed increment in the subsequent stage to the tool speed in the previous stage exceeds a preset ratio; S406: If yes, insert a pause phase between the previous phase and the next phase.

8. The method for setting parameters of fruit and vegetable samples for a large-capacity food crushing and homogenizing machine according to claim 5, characterized in that: Before S41: determining the initial pause duration of each stage according to the sample parameters, the following steps are also included: S407: Obtaining the upper limit of the continuous operation time of the homogenizer; S408: Obtain safety factor; S409: Determine a safe operation time according to the upper limit of the continuous operation time and the safety factor; S4010: Determine whether there is a crushing stage whose operating time exceeds the safe operating time; S4011: If yes, a pause phase is inserted after the crushing phase.

9. The method for setting parameters of fruit and vegetable samples for a large-capacity food crushing and homogenizing machine according to any one of claims 1 to 8, characterized in that: Before S1, it also included: S011: Control the tool to idle at a first preset speed, and record the motor current during idling as a reference current; S012: After placing the sample in the container, controlling the tool to rotate at a second preset speed, and recording the motor current as a second current, wherein the second preset speed is lower than the first preset speed; S013: Compare the second current with the first current; S014: If the difference between the second current and the first current is within a preset range, controlling the cutter to perform coarse crushing at a first preset rotation speed; S015: If the difference between the second current and the first current exceeds a preset range, a prompt message indicating that the sample is too large is sent; S021: continuously detecting the loaded current when the cutter performs coarse crushing at a first preset speed; S022: Perform moving average on the loaded current sampled in real time to obtain a smoothed current sequence; S023: Dividing the smoothed current sequence according to a first preset time window and a second preset time window, wherein the first preset time window is larger than the second preset time window; S024: Calculating an average load increment based on the current sequence divided into the first preset time window and the loaded current; S025: Calculating the current fluctuation amplitude within the second preset time window; S026: Compare the average load increment with a load increment threshold, and compare the fluctuation amplitude with a fluctuation threshold; S027: If the average load increment is lower than the load increment threshold and the fluctuation amplitude is lower than the fluctuation threshold, calculating a change trend of the smoothed current sequence within a first preset time window to obtain a trend value; S028: When the trend value is in the zero approximate interval, continuous timing is started to obtain the accumulated stable time; S029: If the accumulated stable time is longer than the preset time threshold, the process enters the subsequent formal crushing stage, otherwise, repeat steps S021 to S029.

10. The parameter setting system for fruit and vegetable samples of large-capacity food crushing and homogenizing machine is characterized by: The system includes a control circuit and a parameter input device, the parameter input device is electrically connected to the control circuit, the control circuit is electrically connected to a drive motor of a large-capacity food crushing and homogenizing machine, the control circuit includes at least one processor, at least one memory, and computer program instructions stored in the memory, and when the computer program instructions are executed by the processor, the method according to any one of claims 1 to 9 is implemented.

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