Coarse cereal processing and preparation process monitoring and control method

Abstract

The invention relates to the technical field of food preparation processing, in particular to a coarse cereal processing preparation process monitoring and control method which comprises the following steps: step 1, presetting a plurality of coarse cereal formulas, and selecting the required coarse cereal formula as a target formula by a user according to a nutrition reference value and a taste reference value; 2, calculating the required weight of the coarse cereals, multiplying by a fault-tolerant coefficient to obtain an extracted weight, and extracting the coarse cereals for sorting; 3, marking the extracted coarse cereals as coarse cereals to be detected, obtaining characteristic data of the coarse cereals to be detected, adjusting parameters of the photoelectric sorting machine based on the characteristic data, and sorting the coarse cereals to be detected, and 4, preparing the sorted coarse cereals into coarse cereal porridge according to a target formula, rapidly cooling to normal temperature, and sub-packaging into packaging bags, so as to obtain the coarse cereal porridge. Freezing the bagged coarse cereal porridge to obtain a prefabricated coarse cereal porridge finished product.

Description

Technical Field

[0001] The present invention relates to the technical field of food preparation and processing, and particularly to a method for monitoring and controlling the process of miscellaneous grain processing and preparation. Background Art

[0002] Miscellaneous grains generally refer to grain and bean crops other than the five major crops of rice, wheat, corn, soybeans, and potatoes. They are characterized by a short growth period, a small planting area, special planting regions, and a low yield, and generally contain rich nutritional components. Miscellaneous grain porridge refers to porridge made by boiling miscellaneous grains with rice or millet as the main ingredient. With the development of cold chain transportation, prefabricated miscellaneous grain porridge has entered the public eye, and prefabricated miscellaneous grain porridge prepared by the method of quick-freezing and preservation can be stored for a long time and sold over long distances.

[0003] The preparation process of prefabricated miscellaneous grain porridge mainly includes steps of formula selection, raw material preparation, porridge cooking, packaging, and transportation. In the raw material preparation process, a photoelectric sorter is required to sort the miscellaneous grain raw materials to remove foreign objects and deteriorated particles in the miscellaneous grain raw materials. Since the raw materials of miscellaneous grain porridge include a variety of miscellaneous grain raw materials, it is necessary to frequently manually adjust the air jet parameters of the pneumatic nozzle of the photoelectric sorter to adapt to different miscellaneous grains. In addition, the transportation of prefabricated miscellaneous grain porridge needs to be kept frozen, and there is a lack of relevant methods in the prior art to monitor whether it thaws during transportation. Summary of the Invention

[0004] In view of the above-mentioned drawbacks of the prior art, the present invention provides a method for monitoring and controlling the process of miscellaneous grain processing and preparation, which can effectively solve the problem in the prior art that it is difficult to intelligently adjust the air flow parameters of the photoelectric sorter according to the raw material data when sorting miscellaneous grain raw materials.

[0005] To achieve the above object, the present invention is realized through the following technical solutions:

[0006] The present invention provides a method for monitoring and controlling the process of miscellaneous grain processing and preparation, including the following steps:

[0007] Step 1: Preset multiple miscellaneous grain formulas, calculate the nutritional reference value and taste reference value of each miscellaneous grain formula according to the composition of different miscellaneous grain formulas, and the user selects the required miscellaneous grain formula according to the nutritional reference value and taste reference value and records it as the target formula;

[0008] Step 2: Obtain the target formula and the user order quantity, calculate the required weight of each miscellaneous grain based on the user order quantity and the various miscellaneous grain ratios in the target formula, calculate the extraction weight by multiplying the required weight of the miscellaneous grain by the error tolerance coefficient, and extract the miscellaneous grains for sorting;

[0009] Step 3: Denote the various coarse grains obtained by extraction as the coarse grains to be tested, obtain the characteristic data of the coarse grains to be tested, and adjust the parameters of the optoelectronic sorter based on the characteristic data and sort the various coarse grains to be tested. The adjustment process is as follows:

[0010] Obtain the unit grain weight and air resistance area of the coarse grains to be tested;

[0011] Identify the coordinate positions of abnormal particles on the conveyor belt, and control the jet time of the pneumatic nozzle based on the coordinate positions of the abnormal particles;

[0012] Based on the unit grain weight and air resistance area of the coarse grains to be tested and combined with the position of the foreign matter collection box, perform analysis and calculation to adjust the pressure difference between the inlet and outlet of the nozzle;

[0013] Set an influence area for each abnormal particle based on the influence range of the pneumatic nozzle, identify the number of normal particles within the influence area, and analyze and calculate the fault tolerance coefficient in combination with the total weight of the abnormal particles collected within the preset time;

[0014] Step 4: Make the sorted coarse grains into coarse grain porridge according to the target formula, quickly cool it to room temperature, and pack it into packaging bags. Freeze the bagged coarse grain porridge to obtain the finished prefabricated coarse grain porridge.

[0015] Furthermore, the calculation process of the nutrition reference value of the coarse grain formula is as follows:

[0016] Obtain the various coarse grain ratios of the coarse grain formula and denote them as kind i , where i is the type serial number of the coarse grains, and obtain the energy value C corresponding to 100 g of edible part of each coarse grain 1，i , protein C 2，i , fat C 3，i , carbohydrate C 4，i , dietary fiber C 5，i , GI value C 6，i . Calculate the first nutritional value, the second nutritional value, and the third nutritional value through the formula. The specific formula is expressed as

[0017] H 1 represents the first nutritional value;

[0018] H 2 represents the second nutritional value;

[0019] H 3 represents the third nutritional value;

[0020] After normalizing the first nutritional value, the second nutritional value, and the third nutritional value, substitute them into the formula α 营养 = η 1 * H 1 + 2 * η 2 * H2 +3*η 3 *H 3 Calculate in it to obtain the nutrient reference value α 营养 , where η 1 , η 2 , η 3 are all preset weight coefficients.

[0021] Furthermore, the calculation process of the taste reference value of the miscellaneous grain formula is as follows:

[0022] Obtain the unit density and unit grain weight of various miscellaneous grains before and after cooking in the miscellaneous grain formula, which are respectively recorded as ρ 1，i , ρ 2，i , Substitute into the formula for calculation to obtain the expansion coefficient PZ of various miscellaneous grains i , volume coefficient V i ;

[0023] Obtain the hardness value YD after cooking of different miscellaneous grains i , obtain the fiber unit mass XW' in the miscellaneous grain porridge corresponding to the miscellaneous grain composition formula, and substitute it into the formula for calculation to obtain the taste reference value α 口感 , where:

[0024] λ 1 , λ 2 , λ 3 are all preset weight coefficients;

[0025] V i max , V i min respectively represent the maximum and minimum values of V i ;

[0026] α 口感 represents the taste reference value.

[0027] Furthermore, the adjustment process of the jetting time of the pneumatic nozzle of the photoelectric sorting machine is as follows:

[0028] Construct a rectangular coordinate system with the surface of the conveyor belt as a two-dimensional plane, the x-axis is the transverse direction of the conveyor belt, and the y-axis is the length direction of the conveyor belt. Define a monitoring range [y 1 , y 1 +Δd] in the rectangular coordinate system. y 1 respectively represent the y-axis coordinates of the starting line of the monitoring range, Δd is the width of the monitoring range, obtain the image of the monitoring range and mark abnormal particles through image algorithms, and obtain the coordinate position of the abnormal particles, which is recorded as (x 0 , y 0 );

[0029] Calculate the distance of the abnormal particle from the end of the conveyor belt based on the coordinate position of the abnormal particle, and calculate the time difference between the abnormal particle and the pneumatic nozzle through the formula. The calculation formula is Wherein:

[0030] Δt′ represents the time difference;

[0031] d′ represents the distance of the abnormal particle from the end of the conveyor belt;

[0032] v 1 represents the moving speed of the conveyor belt;

[0033] h represents the vertical height difference between the end of the conveyor belt and the pneumatic nozzle;

[0034] g represents the acceleration due to gravity;

[0035] Set an influence range for each pneumatic nozzle Where x 1 represents the x-axis coordinate corresponding to the pneumatic nozzle, and Δd′ represents the air flow width of the pneumatic nozzle. Determine the corresponding pneumatic nozzle based on the coordinate position of the abnormal particle, and control the pneumatic nozzle to start at ΔT time after the abnormal particle is marked. The calculation formula of ΔT is Wherein:

[0036] d″ represents the horizontal distance of the pneumatic nozzle from the end of the conveyor belt;

[0037] v 2 represents the speed of the gas ejected by the pneumatic nozzle;

[0038] Δt 0 is a preset lead.

[0039] Furthermore, the calculation process of the pressure difference between the inlet and outlet of the nozzle of the photoelectric sorter is as follows:

[0040] Select a miscellaneous grain particle with a mass equal to the unit grain weight in the miscellaneous grains to be tested and record it as an analysis particle. Obtain multi-angle images of the analysis particle, and obtain the contour area of the analysis particle in the multi-angle images and take the average value as the wind resistance area of the miscellaneous grains to be tested;

[0041] Preset a horizontal distance value D′ and substitute it into the formula for calculation to obtain the horizontal displacement value ΔD. Calculate the ideal acceleration a′ through the formula where h′ is a preset height difference;

[0042] Obtain the unit grain weight of the miscellaneous grains to be tested and the wind resistance area S, and substitute them into the formula for calculation to obtain the ideal speed v′ 2, where C F , ρ air are respectively the preset drag coefficient and air density;

[0043] Substitute the ideal speed into the preset formula to solve for the velocity v of the gas ejected from the nozzle 2 . The relational formula between the initial gas velocity at the nozzle outlet and the pressure difference ΔP is

[0044] Furthermore, the calculation process of the fault tolerance coefficient is as follows:

[0045] Obtain the influence range corresponding to the abnormal particles in combination with the y-axis range Construct a square area denoted as the influence area. Each abnormal particle corresponds to an influence area. After identifying the abnormal particles, obtain the number of normal particles within the influence area;

[0046] Set an analysis duration T 分选 , and at the moment T 分选 after the start of sorting, obtain the total weight of the abnormal particles collected. Calculate the fault tolerance coefficient k′ through the formula , where:

[0047] w is the number of times the nozzle jets air;

[0048] m all is the total weight of the abnormal particles collected during the analysis duration;

[0049] m′ all is the total weight of the particles within the collection area during the analysis duration;

[0050] p is the serial number of the abnormal particle;

[0051] q is the total number of abnormal particles during the analysis duration;

[0052] NUM p represents the number of normal particles within the influence area corresponding to the abnormal particle with serial number p.

[0053] Furthermore, it further includes step five:

[0054] On each packaging bag, identification grid lines are set. After the multi-grain porridge is bagged and frozen, the outer packaging of each bagged multi-grain porridge is identified and analyzed to determine the appearance data of each bagged multi-grain porridge. During the selling process, the appearance of each bagged multi-grain porridge is verified based on the appearance data. Among them, the determination process of the appearance data of the bagged multi-grain porridge is as follows:

[0055] Denote the horizontal line and vertical line on the identification grid line as L I , L J, where I and J respectively represent the serial numbers of the horizontal and vertical lines on the grid line, and both I and J are integers greater than or equal to 0 and less than or equal to 9. Denote the coordinates of the corresponding intersection points of the horizontal line L I and the vertical line L J as (I, J);

[0056] Clamp and fix both ends of the frozen bagged miscellaneous grain porridge. Measure the vertical distances of each intersection point with a laser rangefinder at a fixed height and sort the intersection points in ascending order of the vertical distances. Obtain the coordinates of the top N sorted intersection points, which are respectively denoted as (I 1 , J 1 ), (I 2 , J 2 ), …, (I N , J N ). Extract the coordinate values among them to form an appearance data string I 1 J 1 I 2 J 2 … I N J N , and spray the appearance data string on the packaging bag.

[0057] Further, the process of determining the appearance data of the bagged miscellaneous grain porridge is as follows:

[0058] Clamp and fix both ends of the frozen bagged miscellaneous grain porridge. Collect the grid line image on the packaging bag of the bagged miscellaneous grain porridge. Draw a cross curve graph corresponding to the grid line in the two-dimensional plane based on the collected image. Denote the curves corresponding to L I and L J in the cross curve graph as L I ′ and L′ J . Calculate the length value of each curve respectively, sort the curves in ascending order of the length value, obtain the subscripts of the top N sorted curves to form an appearance data string, and spray the appearance data string on the packaging bag.

[0059] A computer device includes a memory and a processor. The memory stores a computer program, and when the processor executes the computer program, the steps of the above method are implemented.

[0060] A computer-readable storage medium stores a computer program thereon, and when the computer program is executed by a processor, the steps of the above method are implemented.

[0061] The technical solution provided by the present invention has the following beneficial effects compared with the known prior art:

[0062] 1. The present invention can adjust the pressure difference between the nozzle inlet and outlet based on the unit grain weight and wind resistance area of different miscellaneous grains to be measured, thereby adjusting the velocity of the gas ejected from the nozzle. Furthermore, when sorting different types of miscellaneous grains to be measured, the gas ejected from the nozzle can be adaptively adjusted to blow the unqualified grains in the miscellaneous grains to be measured into the foreign matter collection box, improving the sorting effect and preventing foreign matter or substandard miscellaneous grains from entering the collection area and affecting the final finished product quality.

[0063] 2. The present invention directly evaluates the nutritional type and taste level of the miscellaneous grain porridge prepared by each formula by setting and calculating the nutritional reference value and taste reference value. As a result, users can select the miscellaneous grain porridge formula they need through the nutritional reference value and taste reference value, and then the processing factory can cook the prefabricated miscellaneous grain porridge according to this formula and sell it to users to meet the personalized needs of users.

[0064] 3. After the miscellaneous grain porridge is bagged and frozen, the present invention can identify and analyze the outer packaging of each bag of bagged miscellaneous grain porridge to determine the unique appearance data string of each bag of bagged miscellaneous grain porridge. When it is sold, by checking this appearance data string and the appearance data of the miscellaneous grain porridge, it can be confirmed that the bagged miscellaneous grain porridge has not been thawed or melted during storage and transportation, ensuring that the prefabricated miscellaneous grain porridge is always at an appropriate storage temperature, and further ensuring the sold quality of the bagged miscellaneous grain porridge, strengthening the quality control in the process of miscellaneous grain processing and preparation. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following described drawings are only some embodiments of the present invention, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts.

[0066] Figure 1 It is the overall method flowchart of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0067] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the scope of protection of the present invention.

[0068] The following further describes the present invention with reference to the embodiments.

[0069] Embodiment 1:

[0070] Refer toFigure 1 , a method for monitoring and controlling the processing and preparation of miscellaneous grains, at least including the following steps:

[0071] Step 1: According to the ingredient composition of different miscellaneous grain formulas, calculate the nutritional reference value and taste reference value of each miscellaneous grain formula. The user selects the required miscellaneous grain formula based on the nutritional reference value and taste reference value and records it as the target formula. Based on the target formula, carry out the processing and preparation of miscellaneous grains, where:

[0072] There are multiple preset miscellaneous grain composition formulas. Each miscellaneous grain composition formula contains multiple miscellaneous grain types and the proportion of each miscellaneous grain type. By selecting multiple miscellaneous grains and cooking them together according to different ratios, the miscellaneous grain porridge corresponding to this formula can be obtained. For each miscellaneous grain composition formula, calculate and analyze, and calculate the nutritional reference value and taste reference value of the miscellaneous grain composition formula respectively, where:

[0073] Obtain the various miscellaneous grain ratios of the miscellaneous grain composition formula and record them as kind i , where i is the serial number of the miscellaneous grain type. Based on the nutritional composition data table of various miscellaneous grains (per 100g of edible part), obtain the energy value C corresponding to 100g of edible part of each miscellaneous grain 1，i , protein C 2，i , fat C 3，i , carbohydrate C 4，i , dietary fiber C 5，i , GI value C 6，i , and calculate the first nutritional value, the second nutritional value, and the third nutritional value through the formula. The specific formula is expressed as

[0074]

[0075] H 1 represents the first nutritional value;

[0076] H 2 represents the second nutritional value;

[0077] H 3 represents the third nutritional value;

[0078] After normalizing the first nutritional value, the second nutritional value, and the third nutritional value, substitute them into the formula α 营养 =η 1 *H 1 +2*η 2 *H 2 +3*η 3 *H 3 for calculation to obtain the nutritional reference value α 营养 , where η 1 , η 2 , η 3They are all preset weight coefficients. The larger the nutrition reference value, the longer the residence time of the components of the formula in the gastrointestinal tract, the longer the digestion time required, the stronger the satiety, the lower the absorption rate, the slow release of nutrients, and it is more suitable as a meal replacement for diabetic patients and people who are fitness shaping. While the larger the nutrition reference value, the higher the energy of the components of the formula, the faster digestion after entering the gastrointestinal tract, the higher the absorption rate, and it is more suitable for manual laborers as an energy supplement food;

[0079] Obtain the unit density (here, cooking means completely cooked, and before cooking refers to the grains in the unprocessed state) and unit grain weight (average particle weight) of various grains in the grain composition formula before and after cooking, and record them as ρ 1，i 、ρ 2，i 、 where ρ 1，i 、ρ 2，i 、 represent the unit density before cooking, the unit density after cooking, the unit grain weight before cooking, and the unit grain weight after cooking respectively. Substitute them into the formula for calculation to obtain the expansion coefficient PZ i and volume coefficient V i of various grains, obtain the hardness value YD i after cooking of different grains, obtain the fiber unit mass XW′ (fiber component mass per 100 grams) in the porridge corresponding to the grain composition formula of the grains, and after normalization, substitute it into the formula for calculation to obtain the taste reference value α 口感 , where:

[0080] λ 1 、λ 2 、λ 3 are all preset weight coefficients;

[0081] V i max 、V i min represent the maximum and minimum values of V i respectively;

[0082] α 口感 represents the taste reference value.

[0083] It should be noted that the taste reference value reflects the obviousness of the taste level of the multigrain porridge corresponding to the multigrain composition formula. When the taste reference value is larger, it indicates that obvious granularity can be felt when eating the multigrain porridge, and it is closer to a solid state and needs to be chewed before swallowing. When the taste reference value is smaller, it means that the multigrain porridge has a lower consistency and is closer to a liquid state, and can be directly drunk, which is suitable for user groups with poor digestive ability and those who need liquid food. Users can intuitively judge the nutritional type (i.e., high-fat and high-carbon or low-fat, low-carbon, and high-fiber) and taste level of the multigrain porridge prepared by each formula according to the nutritional reference value and taste reference value, so as to select the multigrain porridge formula they need. Then, the processing factory boils the prefabricated multigrain porridge according to this formula and sells it to users to meet the personalized needs of users.

[0084] Step 2: Obtain the target formula and the quantity of the user's order. Calculate the required weights of various multigrains based on the quantity of the user's order and the various multigrain ratios in the target formula, and extract the corresponding weights of multigrains from the multigrain storage warehouse for sorting. The formula for extracting the weight of each multigrain is M 2 = k′ * M 1 , where:

[0085] M 1 represents the total weight required for this type of multigrain;

[0086] M 2 represents the total weight extracted for this type of multigrain;

[0087] k′ is a preset error tolerance coefficient (the error tolerance coefficient is obtained by the staff through pre-input settings or analysis and calculation).

[0088] Step 3: Denote the extracted various multigrains as the to-be-tested multigrains δ m , where m represents the serial number of the to-be-tested multigrain. Obtain the characteristic data of various to-be-tested multigrains, adjust multiple parameters of the photoelectric sorter based on the characteristic data, and sort various to-be-tested multigrains through the photoelectric sorter to screen out the deteriorated parts and foreign matters in the to-be-tested multigrains.

[0089] It should be noted that the main process of the photoelectric sorter when sorting the to-be-tested multigrains is as follows: The vibrating feeding device evenly spreads the multigrains into a thin layer and conveys them to the collection area by the conveyor belt. There are high-speed cameras or photoelectric sensors on the conveyor belt to capture the light reflected by the particles in real time, and convert the photoelectric signals into digital images and transmit them to the processing unit built in the device. The image algorithm analyzes whether the particles meet the preset standards. Pneumatic nozzles are configured at the end of the conveyor belt to blow away the foreign matters that do not meet the preset standards. The sorting process of the photoelectric sorter is a prior art and will not be elaborated here.

[0090] The process of adjusting the parameters of the photoelectric sorter is as follows:

[0091] S1: Obtain the unit grain weight of the miscellaneous grains to be measured. Select a miscellaneous grain particle with a mass equal to the unit grain weight from the miscellaneous grains to be measured and record it as the analysis particle. Obtain multi-angle images of the analysis particle, and obtain the contour area of the analysis particle in the multi-angle images and calculate the average value, which is recorded as the wind resistance area of the miscellaneous grains to be measured;

[0092] S2: Construct a rectangular coordinate system with the surface of the conveyor belt as the two-dimensional plane, where the x-axis is the transverse direction of the conveyor belt and the y-axis is the length direction of the conveyor belt. Define a monitoring range [y 1 , y 1 +Δd] in the rectangular coordinate system, where y 1 and y 0 respectively represent the y-axis coordinates of the starting line of the monitoring range, and Δd is the width of the monitoring range. Obtain the image of the monitoring range and mark abnormal particles through image algorithms, and obtain the coordinate positions of the abnormal particles, which are recorded as (x 0 );

[0093] S3: Calculate the distance of the abnormal particle from the end of the conveyor belt based on the coordinate position of the abnormal particle, and calculate the time difference between the abnormal particle and the pneumatic nozzle through the formula. The calculation formula is where:

[0094] Δt′ represents the time difference;

[0095] d′ represents the distance of the abnormal particle from the end of the conveyor belt;

[0096] v 1 represents the moving speed of the conveyor belt;

[0097] h represents the vertical height difference between the end of the conveyor belt and the pneumatic nozzle;

[0098] g represents the acceleration due to gravity;

[0099] S4: Set an influence range for each pneumatic nozzle where x 1 represents the x-axis coordinate corresponding to the pneumatic nozzle, and Δd′ represents the air flow width of the pneumatic nozzle. Determine the corresponding pneumatic nozzle based on the coordinate position of the abnormal particle, and control the pneumatic nozzle to start at ΔT time after the abnormal particle is marked. The calculation formula of ΔT is

[0100] where:

[0101] d″ represents the horizontal distance of the pneumatic nozzle from the end of the conveyor belt;

[0102] v 2 represents the gas injection speed of the pneumatic nozzle;

[0103] Δt 0 is the preset lead.

[0104] It should be noted that according to the position of the abnormal particles, the movement data, and combined with physical motion analysis, the start-up time of the pneumatic nozzle is adjusted so that the airflow ejected by the pneumatic nozzle can accurately blow the dropped abnormal particles and remove them from the normal particles, achieving the effect of screening foreign objects and deteriorated particles.

[0105] Furthermore, based on the unit grain weight and wind resistance area of the miscellaneous grains to be measured, the pressure difference between the nozzle inlet and outlet is adjusted, thereby adjusting the velocity of the gas ejected by the pneumatic nozzle, where:

[0106] A preset horizontal distance value D′ (the horizontal distance value is equal to the horizontal distance between the foreign object collection box and the end of the conveyor belt) is substituted into the formula for calculation to obtain the horizontal displacement value ΔD. Through the formula the ideal acceleration a′ is calculated, where h′ is the preset height difference (the vertical height difference between the end of the conveyor belt and the foreign object collection box). The unit grain weight of the miscellaneous grains to be measured is obtained and the wind resistance area S, which are substituted into the formula for calculation to obtain the ideal velocity v′ 2 , where C F , ρ air are respectively the preset resistance coefficient and air density;

[0107] The ideal velocity is substituted into the preset formula to solve for the velocity v of the gas ejected by the nozzle 2 . The relational formula between the initial gas velocity at the nozzle outlet and the pressure difference ΔP is Thus, based on this formula, the pressure difference between the nozzle inlet and outlet is adjusted.

[0108] It should be noted that by adjusting the velocity of the gas ejected by the nozzle, the gas ejected by the nozzle can be adjusted based on the characteristic parameters (weight and size) of different miscellaneous grains to be measured. Furthermore, when the variety of the miscellaneous grains to be measured changes, the gas ejected by the nozzle can also be adjusted adaptively, blowing the unqualified objects in the miscellaneous grains to be measured into the foreign object collection box, improving the sorting effect, and preventing foreign objects or substandard miscellaneous grains from entering the collection area and affecting the final finished product quality.

[0109] S5: Obtain the influence range corresponding to the abnormal particles and combine it with the y-axis range Construct a square area denoted as the influence area. Each abnormal particle corresponds to an influence area (the influence area refers to the area that will be affected when sorting abnormal particles, and the normal particles within this area will be blown into the foreign object collection box). Immediately after identifying the abnormal particles, the image within the influence area is identified to obtain the number of normal particles (miscellaneous grain particles meeting the preset standards) within the influence area;

[0110] Set an analysis duration T 分选 , and obtain the total weight of the collected abnormal particles (i.e., particles that do not meet the preset standards, such as foreign objects and deteriorated particles) at the moment of T 分选 after the start of sorting. Calculate the fault tolerance coefficient k′ through the formula , where:

[0111] w is the number of times the nozzle jets air;

[0112] m all is the total weight of the abnormal particles collected during the analysis duration;

[0113] m′ all is the total weight of the particles in the collection area during the analysis duration;

[0114] p is the serial number of the abnormal particle;

[0115] q is the total number of abnormal particles during the analysis duration;

[0116] NUM p represents the number of normal particles in the corresponding influence area of the abnormal particle with serial number p.

[0117] It should be noted that the image recognition algorithm is an existing technology that can identify objects meeting specific features in a planar image, and will not be elaborated here. Since the vibrating feeding device will evenly spread the miscellaneous grains into a thin layer and convey them to the collection area by the conveyor belt, there are no stacked miscellaneous grains in the influence area, enabling the image recognition algorithm to accurately identify the number of normal particles in the influence area. By calculating the fault tolerance coefficient, the weight setting for extracting miscellaneous grains can be adjusted according to the proportion of abnormal particles in the miscellaneous grains, so that the weight of the extracted miscellaneous grains can still meet the processing requirements after sorting. It should be noted that the sorting of miscellaneous grains is not carried out only once, but through multiple cyclic sorting of abnormal particles to completely remove foreign objects while retaining the normal particles among them.

[0118] It should be noted that before the fault tolerance coefficient is calculated, a fixed value less than or equal to the required weight is set. First, extract the miscellaneous grain raw materials corresponding to the fixed value for step three, then calculate the fault tolerance coefficient, and then extract the remaining miscellaneous grain raw materials based on the fault tolerance coefficient. Therefore, the calculation of the fault tolerance coefficient in step three does not conflict with the extraction of the miscellaneous grains to be measured.

[0119] Step Four: Precisely weigh and mix the sorted miscellaneous grains according to the target formula, put them into the corresponding containers, add water for cooking and processing to obtain miscellaneous grain porridge. Quickly cool the cooked porridge to room temperature (below 25°C) and package it into packaging bags through a packaging device. Freeze the bagged miscellaneous grain porridge to below -18°C through a tunnel freezer to obtain the finished prefabricated miscellaneous grain porridge.

[0120] Example Two:

[0121] Based on the monitoring and control method for the processing and preparation of miscellaneous grains in Embodiment 1, it is necessary to maintain a frozen state during the transportation process after processing to ensure that the miscellaneous grain porridge does not deteriorate. However, in the prior art, it is difficult to continuously monitor the frozen state during transportation, and it is impossible to identify the situation where the prefabricated miscellaneous grain porridge thaws midway, which affects the quality guarantee of the miscellaneous grain porridge. To address the above problems, this embodiment proposes further improvements. The differences compared with Embodiment 1 are as follows:

[0122] It further includes Step Five:

[0123] On each packaging bag, there are identification grid lines (when the packaging bag is flattened, the identification grid lines are in a two-dimensional plane. The identification grid lines are composed of multiple horizontal lines and multiple vertical lines that intersect vertically, and the grids formed by the intersections are unit squares with equal side lengths). After the miscellaneous grain porridge is bagged and frozen, the outer packaging of each bagged miscellaneous grain porridge is identified and analyzed to determine the appearance data of each bagged miscellaneous grain porridge. During the sale process, the appearance of each bagged miscellaneous grain porridge is verified based on the appearance data, so as to ensure that the miscellaneous grain porridge does not thaw midway and to guarantee the quality and quality of the miscellaneous grain porridge.

[0124] Among them, the process of determining the appearance data of the bagged miscellaneous grain porridge is as follows:

[0125] The horizontal and vertical lines on the identification grid lines are respectively denoted as L I 、L J , where I and J respectively represent the serial numbers of the horizontal and vertical lines on the grid lines, and both I and J are integers greater than or equal to 0 and less than or equal to 9. The coordinates of the intersection points corresponding to the horizontal line L I and the vertical line L J are denoted as (I, J);

[0126] The two ends of the frozen bagged miscellaneous grain porridge are clamped and fixed by a clamping tool (when clamping, ensure that the two ends of the bagged miscellaneous grain porridge are sealed in the same plane, and the packaging bag at the sealing part is kept flat). The vertical distances of each intersection point (the vertical distance from the intersection point to the laser emission end of the laser rangefinder) are measured by a laser rangefinder with a fixed height, and the intersection points are sorted in ascending order of the vertical distance. The coordinates of the top N intersection points obtained are respectively denoted as (I 1 , J 1 ), (I 2 , J 2 ), …, (I N , J N ). The coordinate values are extracted to form an appearance data string I 1 J 1 I 2 J 2 …I N J N(The appearance data string can be used to represent the appearance data of the bagged miscellaneous grain porridge. During the sales process, the appearance data string can be reversely disassembled and recombined into intersection coordinates, and then the laser rangefinder can be used to measure the distance of the intersection coordinates and check the distance sorting order, so as to realize the appearance detection of the bagged miscellaneous grain porridge). The appearance data string is sprayed on the packaging bag in the form of inkjet before the bagged miscellaneous grain porridge leaves the factory.

[0127] Embodiment 3:

[0128] The difference compared with Embodiment 2 is that the process of determining the appearance data of the bagged miscellaneous grain porridge is as follows:

[0129] Clamp and fix both ends of the frozen bagged miscellaneous grain porridge with a clamping tool, collect the grid line image on the packaging bag of the bagged miscellaneous grain porridge, and draw a cross-curve graph corresponding to the grid line in the two-dimensional plane based on the collected image (that is, depict the grid line in the collected image, and the grid line appears as a curve in the collected image). In the cross-curve graph, the curves corresponding to L I 、L J are denoted as L I ′, L′ J . Calculate the length value of each curve respectively, sort the curves in ascending order of the length value, obtain the subscripts of the top N curves in the sorting to form an appearance data string, and spray the appearance data string on the packaging bag in the form of inkjet before the bagged miscellaneous grain porridge leaves the factory.

[0130] Generally, the shapes formed after the miscellaneous grain porridge is frozen and bagged are different, so each bag of bagged miscellaneous grain porridge has a unique appearance shape. This appearance shape will be continuously maintained in the frozen state. If the bagged miscellaneous grain porridge thaws during transportation, it will cause changes in the appearance shape. By setting the appearance data string to distinguish the appearance shape of each bag of bagged miscellaneous grain porridge in the frozen state when it leaves the factory, and then checking the appearance data string and the appearance data of the miscellaneous grain porridge when it is sold, it can be confirmed that the bagged miscellaneous grain porridge has not thawed or melted during storage and transportation, ensuring that the prefabricated miscellaneous grain porridge is always at an appropriate storage temperature, and then ensuring the sold quality of the bagged miscellaneous grain porridge, and strengthening the quality control during the processing and preparation of the miscellaneous grains.

[0131] A computer device includes a memory and a processor. The memory stores a computer program, and when the processor executes the computer program, the steps in the above method are implemented.

[0132] A computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps in the above method are implemented.

[0133] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for monitoring and controlling a grain processing and preparation process, characterized in that: The following steps are involved: Step 1: There are multiple grain recipes preset. According to the ingredients of different grain recipes, the nutritional reference value and taste reference value of each grain recipe are calculated. The user selects the desired grain recipe according to the nutritional reference value and taste reference value and records it as the target recipe; Step 2: Obtain the target formula and the number of user orders, calculate the required weight of various grains based on the number of user orders and the ratio of various grains in the target formula, calculate the required weight of the grains and multiply it by the tolerance coefficient to obtain the extraction weight, and extract the grains for sorting; Step 3: Record the various grains extracted as grains to be tested, obtain characteristic data of the grains to be tested, adjust the parameters of the photoelectric sorting machine based on the characteristic data, and sort the various grains to be tested. The specific adjustment process is as follows: Obtain unit grain weight and wind resistance area of ​​the grains to be tested; Identify the coordinate position of abnormal particles on the conveyor belt, and control the jetting time of the pneumatic nozzle based on the coordinate position of the abnormal particles; Based on the unit grain weight and wind resistance area of ​​the grains to be tested and the position of the foreign matter collection box, the pressure difference between the nozzle inlet and outlet is adjusted; An impact area is set for each abnormal particle based on the impact range of the pneumatic nozzle, the number of normal particles in the impact area is identified, and the total weight of abnormal particles collected within a preset time period is combined to analyze and calculate the fault tolerance coefficient; Step 4: The sorted grains are made into grain porridge according to the target formula, quickly cooled to room temperature and packaged into packaging bags, and the bagged grain porridge is frozen to obtain the prefabricated grain porridge product.

2. A method for monitoring and controlling the processing of grains according to claim 1, characterized in that: The calculation process of the nutritional reference value of the coarse grain formula is as follows: The various grain ratios for obtaining grain recipes are recorded as kind i , where i is the type number of the grains, and the energy value C corresponding to 100g of edible part of each grain is obtained 1，i , Protein C 2，i , fat C 3，i , Carbohydrate C 4，i , dietary fiber C 5，i , GI value C 6，i , the first nutritional value, the second nutritional value, and the third nutritional value are calculated by the formula. The specific formula is expressed as follows: in: H1 represents the first nutritional value; H2 represents the second nutritional value; H3 represents the third nutritional value; The first nutritional value, the second nutritional value, and the third nutritional value are normalized and then entered into the formula α 营养 =η1*H1+2*η2*H2+3*η3*H3 to calculate and get the nutritional reference value α 营养 , where η1, η2, and η3 are all preset weight coefficients.

3. A method for monitoring and controlling the processing of grains according to claim 2, characterized in that: The calculation process of the taste reference value of the coarse grain formula is as follows: The unit density and unit grain weight of various grains before and after cooking in the grain formula are recorded as ρ 1，i , 2，i , Substitute into the formula The expansion coefficient PZ of various grains is calculated in i , Volume coefficient V i ; Get the hardness value YD of different grains after cooking i , obtain the fiber unit mass XW′ in the coarse grain porridge corresponding to the coarse grain composition formula, and enter it into the formula after normalization. Calculate the taste reference value α 口感 ,in: λ1, λ2, and λ3 are all preset weight coefficients; V i max 、V i min Respectively represent V i The maximum and minimum values ​​of ; α 口感 Indicates taste reference value.

4. The method for monitoring and controlling the processing of grains according to claim 1, characterized in that: The pneumatic nozzle jet time adjustment process of the photoelectric sorting machine is as follows: A rectangular coordinate system is constructed with the conveyor belt surface as a two-dimensional plane. The x-axis is the lateral direction of the conveyor belt, and the y-axis is the length direction of the conveyor belt. A monitoring range [y1, y1+Δd] is defined in the rectangular coordinate system, where y1 represents the y-axis coordinate of the starting line of the monitoring range, and Δd is the width of the monitoring range. The image of the monitoring range is obtained and abnormal particles are marked by an image algorithm. The coordinate position of the abnormal particles is recorded as (x0, y0); The distance between the abnormal particle and the end of the conveyor belt is calculated based on the coordinate position of the abnormal particle, and the time difference between the abnormal particle and the pneumatic nozzle is calculated by the formula: in: Δt′ represents the time difference; d′ represents the distance of the abnormal particle from the end of the conveyor belt; v1 represents the moving speed of the conveyor belt; h represents the vertical height difference between the end of the conveyor belt and the pneumatic nozzle; g represents the acceleration due to gravity; Set a range of influence for each pneumatic nozzle Where x1 represents the x-axis coordinate corresponding to the pneumatic nozzle, Δd′ represents the airflow width of the pneumatic nozzle, the corresponding pneumatic nozzle is determined based on the coordinate position of the abnormal particle, and the pneumatic nozzle is controlled to start at ΔT time after the abnormal particle is marked. The ΔT calculation formula is: in: d″ represents the horizontal distance between the pneumatic nozzle and the end of the conveyor belt; v2 represents the velocity of the gas ejected by the pneumatic nozzle; Δt0 is the preset advance amount.

5. A method for monitoring and controlling the processing of grains according to claim 4, characterized in that: The pressure difference calculation process between the inlet and outlet of the photoelectric sorting machine nozzle is as follows: A grain with a mass equal to the unit grain weight is selected from the grains to be tested as the analysis grain, and a multi-angle image of the analysis grain is obtained. The contour area of ​​the analysis grain in the multi-angle image is obtained and the average value is calculated and recorded as the wind resistance area of ​​the grains to be tested; Preset a horizontal distance value D′ and substitute it into the formula Calculate the horizontal displacement value ΔD by the formula The ideal acceleration a′ is calculated, where h′ is the preset height difference; Get the unit grain weight of the grain to be tested and wind resistance area S, substitute into the formula Calculate the ideal speed v′2, where C F , air are the preset drag coefficient and air density respectively; Substitute the desired speed into the preset formula In the equation, the velocity v2 of the nozzle jet gas is obtained, and the relationship between the initial gas velocity at the nozzle outlet and the pressure difference ΔP is:

6. A method for monitoring and controlling the processing of grains according to claim 5, characterized in that: The fault tolerance coefficient calculation process is as follows: Get the influence range of abnormal particles and the y-axis range A square area is constructed as the impact area. Each abnormal particle corresponds to an impact area. After identifying the abnormal particles, the number of normal particles in the impact area is obtained. Set an analysis time T 分选 , after the sorting starts, T 分选 Obtain the total weight of abnormal particles collected at all times, using the formula The fault tolerance coefficient k′ is calculated, where: w is the number of nozzle jets; m all is the total weight of abnormal particles collected during the analysis period; m′ all is the total weight of particles in the collection area during the analysis time; p is the serial number of the abnormal particle; q is the total number of abnormal particles within the analysis time; NUM p Indicates the number of normal particles in the affected area corresponding to the abnormal particle with serial number p.

7. The method for monitoring and controlling the processing of grains according to claim 1, characterized in that: Also includes step five: An identification grid line is set on each packaging bag. After the multi-grain porridge is bagged and frozen, the outer packaging of each bag of bagged multi-grain porridge is identified and analyzed to determine the appearance data of each bag of bagged multi-grain porridge. During the sales process, the appearance of each bag of bagged multi-grain porridge is verified based on the appearance data. The process of determining the appearance data of the bagged multi-grain porridge is as follows: The horizontal and vertical lines on the identification grid are denoted as L I , L J , where I and J represent the numbers of the horizontal and vertical lines on the grid, respectively, and I and J are integers greater than or equal to 0 and less than or equal to 9. I , vertical line L J The coordinates of the corresponding intersection are labeled (I, J); The frozen bagged multi-grain porridge is clamped and fixed at both ends, and the vertical distance of each intersection is measured by a laser rangefinder at a fixed height, and the intersections are sorted in the order of vertical distance from small to large, and the coordinates of the intersections in the top N are obtained and recorded as (I1, J1), (I2, J2), ..., (I N ,J N ), extract the coordinate values ​​to form the appearance data string I1J1I2J2…I N J N , spray the appearance data string on the packaging bag.

8. A method for monitoring and controlling the processing of grains according to claim 7, characterized in that: The process of determining the appearance data of bagged multi-grain porridge is as follows: The two ends of the frozen bagged multi-grain porridge are clamped and fixed, and the grid line image on the bagged multi-grain porridge packaging bag is collected. Based on the collected image, a cross curve graph corresponding to the grid line is drawn in a two-dimensional plane, and L in the cross curve graph is drawn. I , L J The corresponding curve is denoted as L I ′, L′ J , calculate the length value of each curve respectively, sort the curves in ascending order of length value, obtain the curve subscripts in the top N order to form an appearance data string, and spray the appearance data string on the packaging bag.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 8 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 8 are implemented.

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