Drying curve construction method, grain drying method, grain drying device, grain drying equipment and medium

Abstract

The embodiment of the invention discloses a drying curve construction method, a grain drying method and device, equipment and a medium, and belongs to the technical field of equipment automatic control. The drying curve construction method comprises the following steps: in response to a received curve construction request, determining a target moisture stage corresponding to an initial moisture value of grains; determining the drying temperature corresponding to the target moisture stage as a real-time drying temperature; based on the real-time drying temperature, a drying device is controlled to dry the grains; reducing the real-time drying temperature according to the crack ratio and the real-time moisture value of the grains until the real-time moisture value is the target moisture value; and constructing a drying curve between the time and the real-time drying temperature. Compared with the prior art, the drying operation can be carried out on the same kind of grains based on the constructed drying curve, the duration of each drying process can be shortened on the basis that the quality of the grains is not damaged, and then the grains are efficiently and accurately dried.

Description

Technical Field

[0001] The present application relates to the technical field of equipment automatic control, and in particular to a drying curve construction method, a grain drying method, a device, equipment and a medium. Background Art

[0002] With the rapid development of agricultural production technology, drying equipment is widely used in drying scenarios of grains such as rice, millet and corn. By drying grains with heat sources such as biomass furnaces, gas furnaces, coal furnaces and suspension furnaces provided by drying equipment, reducing the moisture in grains can extend the storage time of grains and improve the processing efficiency of grains. Usually, the transverse cracks on grains are called cracks, and the percentage of cracks in grains is called the crack rate. When the drying temperature remains unchanged, too high a drying temperature will lead to too high a crack rate of grains, resulting in low quality of the dried grains. Too low a drying temperature will lead to too long a time required to dry the grains, affecting the grain drying efficiency.

[0003] Usually, it is necessary to manually observe the grain drying process and manually adjust the drying temperature of the drying equipment based on personal experience. However, the drying of different types of grains depends on manual adjustment of the drying temperature. Different drying temperatures adjusted each time may result in large differences in the quality of the dried grains and large differences in the time required to dry the grains, making it impossible to accurately dry the grains efficiently. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a drying curve construction method, a grain drying method, a device, an equipment and a medium, so as to solve the problem that the prior art cannot efficiently and accurately dry grains.

[0005] In order to achieve the above-mentioned object, the first aspect of the present application provides a drying curve construction method, and the drying curve construction method comprises:

[0006] In response to the received curve building request, determining a target moisture stage corresponding to an initial moisture value of the grain;

[0007] Determine the drying temperature corresponding to the target moisture stage as the real-time drying temperature;

[0008] Based on the real-time drying temperature, the drying device is controlled to dry the grains;

[0009] According to the cracking rate and real-time moisture value of the grains, the real-time drying temperature is reduced until the real-time moisture value reaches the target moisture value;

[0010] Build a drying curve between time and real-time drying temperature.

[0011] In the embodiment of the present application, according to the cracking rate and the real-time moisture value of the grains, the real-time drying temperature is reduced, including:

[0012] Obtain the grain cracking rate, real-time moisture value and grain temperature within the first interval;

[0013] According to the grain bursting rate in the first interval time, determining the increase value of the grain bursting rate in the first interval time;

[0014] Determining a grain temperature increase value within the first interval time length according to the grain temperature of the grain within the first interval time length;

[0015] When the preset conditions are met, the real-time drying temperature is lowered according to the bursting rate and the real-time moisture value of the grain within the first interval time, wherein the preset conditions are at least one of the bursting rate growth value within the first interval time exceeding the bursting rate growth threshold value, and the grain temperature growth value within the first interval time exceeding the grain temperature growth threshold value.

[0016] In an embodiment of the present application, according to the cracking rate and the real-time moisture value of the grains within the first interval, the real-time drying temperature is reduced, including:

[0017] Determine the temperature adjustment coefficient according to the cracking rate of the grains within the first interval;

[0018] Determine the temperature drop value based on the real-time moisture value of the grains within the first interval, the minimum temperature adjustment value of the drying device, and the real-time drying temperature;

[0019] Reduce the real-time drying temperature according to the temperature adjustment coefficient and the temperature drop amplitude value.

[0020] In an embodiment of the present application, a drying curve between construction time and real-time drying temperature includes:

[0021] Fit the time-varying data of the real-time drying temperature during the grain drying process to construct an initial curve of the real-time drying temperature;

[0022] Get the growth value of the grain's burst rate in each second interval;

[0023] According to the increase value of the grain cracking rate in each second interval, three dividing points are determined;

[0024] Based on the initial curve and the three dividing points, three drying stages are obtained, wherein the drying temperature corresponding to each drying stage is a fixed value, and the drying temperatures corresponding to the three drying stages decrease successively over time;

[0025] According to the drying temperature corresponding to each drying stage, a drying curve between time and real-time drying temperature is constructed.

[0026] In the embodiment of the present application, the target moisture stage includes a first moisture stage, a second moisture stage, and a third moisture stage, and the moisture value ranges corresponding to the first moisture stage, the second moisture stage, and the third moisture stage decrease in sequence;

[0027] The drying temperature corresponding to the target moisture stage is determined as the real-time drying temperature, including:

[0028] When the target moisture stage is the first moisture stage or the second moisture stage, the drying temperature corresponding to the target moisture stage is determined as the real-time drying temperature.

[0029] In the embodiment of the present application, the drying temperature corresponding to the first moisture stage is the first temperature, the drying temperature corresponding to the second moisture stage is the second temperature, and the drying temperature corresponding to the third moisture stage is the third temperature. The first temperature is greater than the second temperature, and the second temperature is greater than the third temperature.

[0030] The curve construction method also includes:

[0031] When the target moisture stage is the third moisture stage, a drying curve is constructed in which the real-time drying temperature is constant at the third temperature.

[0032] A second aspect of the present application provides a grain drying method, the grain drying method comprising:

[0033] In response to the received grain drying request, a drying curve corresponding to the target grain is obtained, wherein the drying curve is obtained according to the above-mentioned drying curve construction method;

[0034] Based on the drying curve, the drying device is controlled to dry the target grains.

[0035] A third aspect of the present application provides a control device, comprising:

[0036] a memory configured to store instructions;

[0037] The processor is configured to call instructions from the memory and implement the above-mentioned drying curve construction method or the above-mentioned grain drying method when executing the instructions.

[0038] A fourth aspect of the present application provides a drying device, comprising:

[0039] The control device mentioned above;

[0040] A drying device is configured to dry grain.

[0041] A fifth aspect of the present application provides a machine-readable storage medium having instructions stored thereon, the instructions being used to enable a machine to execute the above-mentioned drying curve construction method or the above-mentioned grain drying method.

[0042] The present application provides a drying curve construction method, including: in response to a received curve construction request, determining a target moisture stage corresponding to the initial moisture value of the grain; determining the drying temperature corresponding to the target moisture stage as the real-time drying temperature; based on the real-time drying temperature, controlling the drying device to dry the grain; according to the cracking rate and the real-time moisture value of the grain, reducing the real-time drying temperature until the real-time moisture value is the target moisture value; constructing a drying curve between time and real-time drying temperature. When the initial moisture value of the grain is high, a higher drying temperature can shorten the drying time of the grain, thereby improving the drying efficiency. At the same time, according to the grain quality of the grain during the drying process, lowering the drying temperature avoids damage to the quality of the grain during the drying process. For the same type of grain, the drying operation can be performed based on the constructed drying curve, and the duration of each drying process can be shortened without damaging the grain quality, thereby efficiently and accurately drying the grain.

[0043] Other features and advantages of the embodiments of the present application will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the following specific implementations, they are used to explain the embodiments of the present application, but do not constitute a limitation on the embodiments of the present application. In the accompanying drawings:

[0045] Figure 1 A schematic diagram of a process of constructing a drying curve according to an embodiment of the present application is shown;

[0046] Figure 2 An example diagram of a drying curve according to an embodiment of the present application is schematically shown;

[0047] Figure 3 A schematic diagram of a process of a grain drying method according to an embodiment of the present application is schematically shown;

[0048] Figure 4 A first structural diagram of a drying device according to an embodiment of the present application is schematically shown;

[0049] Figure 5 A first structural diagram of a drying device according to an embodiment of the present application is schematically shown.

[0050] Description of Reference Numerals

[0051] 300 - drying equipment; 310 - control device, 320 - drying device, 330 - detection device, 340 - cloud server, 350 - human-computer interaction device. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. It should be understood that the specific implementation methods described herein are only used to illustrate and explain the embodiments of the present application, and are not used to limit the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0053] It should be noted that the acquisition, transmission, storage, use, and processing of data in the technical solution of this application are in compliance with the relevant provisions of national laws and regulations. In the embodiments of this application, some existing solutions in the industry such as certain software, components, and models may be mentioned, which should be considered as exemplary. Their purpose is only to illustrate the feasibility of implementing the technical solution of this application, but it does not mean that the applicant has or will necessarily use the solution.

[0054] It should be noted that if directional indication is involved in the embodiments of the present application, the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0055] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0056] Example 1

[0057] Figure 1 The following is a schematic diagram showing a flow chart of a method for constructing a drying curve according to an embodiment of the present application. Figure 1 As shown, the embodiment of the present application provides a drying curve construction method, and the drying curve construction method may include the following steps:

[0058] S110 , in response to the received curve building request, determining a target moisture stage corresponding to the initial moisture value of the grain.

[0059] When a type of grain is required for drying operation, determine whether there is a drying curve corresponding to the grain type. In the case that there is no drying curve corresponding to the grain, generate a curve construction request. The drying equipment responds to the received curve construction request, determines the initial moisture value of the grain, and determines the target moisture stage corresponding to the initial moisture value. It should be understood that in this embodiment, the user can collect the manually input drying equipment operating area and grain type through the provided human-computer interaction interface, and then bind the drying curve, operating area and grain type.

[0060] It should be understood that the types of cereals are set according to actual needs, and can be rice, wheat, corn, etc., which are not limited here. For ease of understanding, the cereals in the embodiments of the present application are rice.

[0061] S120: Determine the drying temperature corresponding to the target moisture stage as the real-time drying temperature.

[0062] The grains are pre-divided into multiple moisture stages, each moisture stage corresponds to a drying temperature, so as to determine the initial temperature during drying. The drying temperature corresponding to the target moisture stage is determined as the real-time drying temperature.

[0063] S130, based on the real-time drying temperature, controlling the drying device to dry the grains.

[0064] The drying temperature corresponding to the target moisture stage is determined as the initial real-time drying temperature, and the drying device is controlled to dry the grains based on the real-time drying temperature. During the drying of grains, the moisture tester can be used to collect the grain cracking rate every 1 hour, and the real-time moisture value of the grain can be collected every 15 minutes. The wind temperature sensor can be used to collect the real-time drying temperature, and the grain temperature can be used to collect the grain temperature in real time.

[0065] It should be understood that the collected data can also be cleaned to remove abnormal data and ensure the reliability of the constructed drying curve. For ease of understanding, in the embodiment of the present application, for the real-time drying temperature, the abnormal value data greater than 100°C and less than 0°C are removed; for the grain temperature, the abnormal value data greater than 60°C and less than 0°C are removed; for the real-time moisture value, the abnormal value data with a moisture percentage greater than 35% and less than 10% are removed.

[0066] S140, according to the cracking rate and the real-time moisture value of the grains, reducing the real-time drying temperature until the real-time moisture value reaches the target moisture value.

[0067] The bursting rate of grains can reflect the quality of grains during the drying process. If the bursting rate of grains is too high, it is determined that the quality of the dried grains is low. The real-time moisture value of grains is constantly changing during the drying process. When the real-time moisture value of grains is high, drying the grains at a higher temperature can improve the efficiency of drying the grains. When the real-time moisture value of grains is low, continuing to dry the grains at a high temperature will lead to an increase in the bursting rate of grains, and the real-time drying temperature needs to be lowered. In this embodiment, the real-time drying temperature is lowered according to the bursting rate and real-time moisture value of the grains, and the drying device is controlled to dry the grains after lowering the real-time drying temperature. According to the changes in the quality of the grains, the drying temperature is continuously lowered until the real-time moisture value reaches the target moisture value, then it is determined that the grain drying operation is completed and the drying of the grains is stopped.

[0068] In the embodiment of the present application, according to the cracking rate and the real-time moisture value of the grains, the real-time drying temperature is reduced, including:

[0069] Obtain the grain cracking rate, real-time moisture value and grain temperature within the first interval;

[0070] According to the grain bursting rate in the first interval time, determining the increase value of the grain bursting rate in the first interval time;

[0071] Determining a grain temperature increase value within the first interval time length according to the grain temperature of the grain within the first interval time length;

[0072] When the preset conditions are met, the real-time drying temperature is lowered according to the bursting rate and the real-time moisture value of the grain within the first interval time, wherein the preset conditions are at least one of the bursting rate growth value within the first interval time exceeding the bursting rate growth threshold value, and the grain temperature growth value within the first interval time exceeding the grain temperature growth threshold value.

[0073] The cracking rate, real-time moisture value and grain temperature of the grain in the first time interval are obtained to determine the changes in the cracking rate, real-time moisture value and grain temperature of the grain in the time interval. According to the cracking rate of the grain in the first time interval, the increase value of the cracking rate in the first time interval is determined, and according to the grain temperature of the grain in the first time interval, the increase value of the grain temperature in the first time interval is determined.

[0074] If the growth value of the cracking rate and the growth value of the grain temperature are too high, the quality of the grain will be damaged. The preset condition is that at least one of the growth value of the cracking rate in the first interval time exceeds the cracking rate growth threshold and the growth value of the grain temperature in the first interval time exceeds the grain temperature growth threshold. If the preset conditions are met, the real-time drying temperature is reduced according to the cracking rate and the real-time moisture value of the grain in the first interval time, thereby avoiding damage to the grain quality during the drying process.

[0075] In an embodiment of the present application, according to the cracking rate and the real-time moisture value of the grains within the first interval, the real-time drying temperature is reduced, including:

[0076] Determine the temperature adjustment coefficient according to the cracking rate of the grains within the first interval;

[0077] Determine the temperature drop value based on the real-time moisture value of the grains within the first interval, the minimum temperature adjustment value of the drying device, and the real-time drying temperature;

[0078] Reduce the real-time drying temperature according to the temperature adjustment coefficient and the temperature drop amplitude value.

[0079] The value of the first interval duration is set according to actual needs and is not limited here. For ease of understanding, in the embodiment of the present application, the first interval duration is 1 hour, and the temperature adjustment coefficient is determined according to the cracking rate of the grains within the first interval duration:

[0080] αn=[W(n+1)t-Wnt] / Wnt Formula (1)

[0081] Among them, αn is the temperature adjustment coefficient, Wnt is the burst waist rate collected for the nth time, and the interval between the burst waist rate collected for the nth time and the burst waist rate collected for the (n+1)th time is the first interval time.

[0082] Based on the real-time moisture value of the grains in the first interval, the minimum temperature adjustment value of the drying device and the real-time drying temperature, the temperature drop value is determined as follows:

[0083] ΔTn=[S(n+1)t-Snt+&]×T(t) Formula (2)

[0084] Among them, ΔTn is the temperature drop amplitude value, Snt is the real-time moisture value collected for the nth time, the interval between the nth collection of the bursting rate and the n+1th collection of the bursting rate is the first interval length, & is the minimum temperature adjustment value when the drying device adjusts the drying temperature once, and T(t) is the real-time drying temperature.

[0085] According to the temperature adjustment coefficient and the temperature drop amplitude value, the real-time drying temperature is reduced. For ease of understanding, in the embodiment of the present application, the real-time drying temperature is reduced n times, and the real-time drying temperature after being reduced n times is:

[0086] T(t)=Tc-α1ΔT1-α2ΔT2-α3ΔT3-…αnΔTn Formula (3)

[0087] Wherein, T(t) is the real-time drying temperature after being reduced n times, αn is the temperature adjustment coefficient when the real-time drying temperature is reduced for the nth time, and ΔTn is the temperature drop amplitude value when the real-time drying temperature is reduced for the nth time.

[0088] S150, constructing a drying curve between time and real-time drying temperature.

[0089] When the real-time moisture value reaches the target moisture value, the grain drying operation is determined to be completed and the grain drying is stopped. The drying temperature of the grain drying process that changes with time is obtained to construct a drying curve between time and real-time drying temperature. When the grain needs to be dried again, the drying device can be directly controlled according to the drying curve to dry the grain. The grain can be dried efficiently and accurately without manually adjusting the drying temperature.

[0090] When the initial moisture content of the grain is high, a higher drying temperature can shorten the drying time of the grain, thereby improving the drying efficiency. At the same time, according to the grain quality during the drying process, lowering the drying temperature avoids damage to the grain quality during the drying process. For the same type of grain, the drying operation can be performed based on the constructed drying curve, which can shorten the duration of each drying process without damaging the grain quality, thereby drying the grain efficiently and accurately.

[0091] In an embodiment of the present application, a drying curve between construction time and real-time drying temperature includes:

[0092] Fit the time-varying data of the real-time drying temperature during the grain drying process to construct an initial curve of the real-time drying temperature;

[0093] Get the growth value of the grain's burst rate in each second interval;

[0094] According to the increase value of the grain cracking rate in each second interval, three dividing points are determined;

[0095] Based on the initial curve and the three dividing points, three drying stages are obtained, wherein the drying temperature corresponding to each drying stage is a fixed value, and the drying temperatures corresponding to the three drying stages decrease successively over time;

[0096] According to the drying temperature corresponding to each drying stage, a drying curve between time and real-time drying temperature is constructed.

[0097] Figure 2 An example diagram of a drying curve according to an embodiment of the present application is schematically shown.

[0098] The changing data of the drying temperature when the drying device is used to dry the grains is fitted to construct an initial drying temperature curve. Usually, the drying temperature of the initial curve will change many times, which is difficult to adapt to different types of drying equipment. In this embodiment, the initial drying curve is adjusted to a three-stage drying curve.

[0099] The growth value of the cracking rate of the grains in each second interval is obtained. The value of the second interval is set according to actual needs and is not limited here. For ease of understanding, in the embodiment of the present application, the interval from the 60th minute is taken as an example, and the growth value of the cracking rate is obtained as follows:

[0100] According to the temperature adjustment coefficient and the temperature drop amplitude value, the real-time drying temperature is reduced. For ease of understanding, in the embodiment of the present application, the real-time drying temperature is reduced n times, and the real-time drying temperature after being reduced n times is:

[0101]

[0102] Among them, K is the increase value of waist burst rate, W is the waist burst rate, t 60 is the 60th minute, and l is the length of the second interval.

[0103] According to the growth value of the cracking rate of the grains in each second interval, three dividing points are determined. For ease of understanding, in the embodiment of the present application, the two points with the highest values ​​from all the cracking rate growth values ​​are taken as two of the dividing points to avoid damage to the grain quality caused by the unchanged drying temperature, and the point where the drying is stopped is taken as one dividing point, and three dividing points are obtained together. Based on the initial curve and the three dividing points, three drying stages are obtained, wherein the drying temperature corresponding to each drying stage is a fixed value, and the drying temperatures corresponding to the three drying stages are successively reduced.

[0104] According to the drying temperature corresponding to each drying stage, a drying curve between the construction time and the real-time drying temperature is constructed. As shown in the figure, the x-axis of the drying curve is the drying time, and the y-axis is the drying temperature. Ideally, the drying temperature should be reduced instantly when the dividing point is reached, and the drying temperature needs time to gradually reduce when the dividing point is reached during the actual drying process. In the present embodiment, the three dividing points are respectively the first dividing point, the second dividing point and the third dividing point, the first dividing point is the point where the moisture percentage of the rice is 19%-20%, the second dividing point is the point where the moisture percentage of the rice is 15%-16%, and the third dividing point is the point where the moisture percentage of the rice is 13.5%-14%.

[0105] When rice is dried based on the drying curve, the drying speed of the rice is mainly related to the net drying time. Under the premise of ensuring the quality of the rice, the drying time required for the rice with a moisture percentage of 26% to drop to a safe moisture percentage of 13.5% is greater than 120 minutes. At the same time, each time the drying time reaches 6 to 15 minutes, providing a slow time to stop drying can further ensure the quality of the dried rice, so that the duration of the drying curve in this embodiment is 14 hours.

[0106] In this embodiment, the three drying stages are respectively the extreme precipitation stage, the steady precipitation stage and the constant speed quality preservation stage. The drying temperature corresponding to the extreme precipitation stage is 80°C, and the real-time moisture value of the grains drops rapidly, so that the grains can be dried with high efficiency and the cracking rate increases slowly. The drying temperature corresponding to the extreme precipitation stage is 65°C. After the extreme precipitation stage, the real-time moisture value of the grains drops rapidly, and the drying temperature is reduced to 65°C. The growth value of the cracking rate remains at a low level, that is, the grains are still dried with high efficiency and the cracking rate increases slowly. When entering the constant speed quality preservation stage, the real-time moisture value of the grains is already low, and the temperature corresponding to the constant speed quality preservation stage is 55°C. Continuing to reduce the drying temperature suppresses the change in the growth value of the cracking rate. When drying grains based on the drying curve, the three-stage drying curve reduces the frequency of drying temperature adjustment and can be adapted to different types of drying equipment. At the same time, by continuously reducing the drying temperature, a balance between drying efficiency and drying quality is achieved, and then the grains are dried efficiently and accurately without damaging the quality of the grains.

[0107] In the embodiment of the present application, the target moisture stage includes a first moisture stage, a second moisture stage, and a third moisture stage, and the moisture value ranges corresponding to the first moisture stage, the second moisture stage, and the third moisture stage decrease in sequence;

[0108] The drying temperature corresponding to the target moisture stage is determined as the real-time drying temperature, including:

[0109] When the target moisture stage is the first moisture stage or the second moisture stage, the drying temperature corresponding to the target moisture stage is determined as the real-time drying temperature.

[0110] In this embodiment, three moisture value ranges are divided into the first moisture stage, the second moisture stage and the third moisture stage, which decrease in sequence. The first moisture stage is the high moisture stage of the grains, the third moisture stage is the low moisture stage of the grains, and the second moisture stage is the medium moisture stage of the grains between the high moisture stage and the low moisture stage. When the target moisture stage is the first moisture stage or the second moisture stage, the moisture value of the grains is relatively high, and the drying temperature corresponding to the target moisture stage is determined as the real-time drying temperature, and the grains are quickly dried at a higher drying temperature, and then the drying temperature is lowered. When the target moisture stage is the third moisture stage, the moisture value of the grains is relatively low, and the grains can be directly dried at a lower drying temperature to avoid damage to the quality of the grains due to excessively high drying temperatures. When the drying temperature set at the beginning is relatively low, there is no need to execute the step of lowering the real-time drying temperature according to the cracking rate and the real-time moisture value of the grains.

[0111] In the embodiment of the present application, the drying temperature corresponding to the first moisture stage is the first temperature, the drying temperature corresponding to the second moisture stage is the second temperature, and the drying temperature corresponding to the third moisture stage is the third temperature. The first temperature is greater than the second temperature, and the second temperature is greater than the third temperature.

[0112] The curve construction method also includes:

[0113] When the target moisture stage is the third moisture stage, a drying curve is constructed in which the real-time drying temperature is constant at the third temperature.

[0114] For ease of understanding, in the embodiment of the present application, the first moisture stage is a moisture value percentage range greater than 25%, and the first temperature is 85°C. The second moisture stage is a moisture value percentage range of 20% to 25, and the second temperature is 75°C. The third moisture stage is a moisture value percentage range of less than 20%, and the third temperature is 60°C. When the target moisture stage is the third moisture stage, the drying temperature is maintained at 60°C until the drying is completed to avoid damage to the quality of the grain due to excessively high drying temperature. Since the drying temperature is not lowered, a drying curve is directly constructed in which the real-time drying temperature is constant at the third temperature.

[0115] The present application provides a drying curve construction method, including: in response to a received curve construction request, determining a target moisture stage corresponding to the initial moisture value of the grain; determining the drying temperature corresponding to the target moisture stage as the real-time drying temperature; based on the real-time drying temperature, controlling the drying device to dry the grain; according to the cracking rate and the real-time moisture value of the grain, reducing the real-time drying temperature until the real-time moisture value is the target moisture value; constructing a drying curve between time and real-time drying temperature. When the initial moisture value of the grain is high, a higher drying temperature can shorten the drying time of the grain, thereby improving the drying efficiency. At the same time, according to the grain quality of the grain during the drying process, lowering the drying temperature avoids damage to the quality of the grain during the drying process. For the same type of grain, the drying operation can be performed based on the constructed drying curve, and the duration of each drying process can be shortened without damaging the grain quality, thereby efficiently and accurately drying the grain.

[0116] Example 2

[0117] Figure 3 The schematic diagram of the process of a grain drying method according to an embodiment of the present application is shown. Figure 3 As shown, the embodiment of the present application provides a grain drying method, which may include the following steps:

[0118] S210, in response to the received grain drying request, obtaining a drying curve corresponding to the target grain, wherein the drying curve is obtained according to the above-mentioned drying curve construction method.

[0119] In response to the received grain drying request, the target grain to be dried is determined. Based on the type of the target grain, it is determined whether there is a drying curve corresponding to the target grain. If there is no drying curve corresponding to the target grain, a drying curve is obtained based on the above-mentioned drying curve construction method. If there is a drying curve corresponding to the target grain, the drying curve corresponding to the target grain is directly obtained.

[0120] S220: Based on the drying curve, control the drying device to dry the target grains.

[0121] Based on the drying curve, the drying device is controlled to dry the target grains. Since the drying curve is the relationship between drying temperature and time, the drying temperature can be automatically lowered based on the drying curve to avoid long-term high drying temperature from damaging the grain quality. For the same type of grain, the drying operation can be performed based on the constructed drying curve, which can shorten the duration of each drying process without damaging the grain quality, thereby drying the grain efficiently and accurately.

[0122] The present application also provides a control device, including:

[0123] a memory configured to store instructions;

[0124] The processor is configured to call instructions from the memory and implement the above-mentioned drying curve construction method or the above-mentioned grain drying method when executing the instructions.

[0125] The present application also provides a drying device, including:

[0126] The control device mentioned above;

[0127] A drying device is configured to dry grain.

[0128] Figure 4 A first structural diagram of a drying device according to an embodiment of the present application is schematically shown.

[0129] The drying device includes a control device 310 and a drying device 320. The control device 310 can respond to the received instructions and then control the drying device 320 to dry the grains. In the case where there is no drying curve corresponding to the grains, the control device 310 responds to the instructions to construct a drying curve for the grains. In the case where there is a drying curve corresponding to the grains, the control device 310 responds to the instructions to control the drying temperature of the drying device 320 based on the drying curve. The type of the drying device 320 is set according to actual needs, and can be a device that provides a heat source such as a biomass furnace, a gas furnace, a coal furnace, and a suspension furnace, which is not limited here.

[0130] Figure 5 A first structural diagram of a drying device according to an embodiment of the present application is schematically shown.

[0131] It should be understood that the drying equipment also includes other devices, and the other devices are set according to actual needs and are not limited here. For ease of understanding, other devices in the embodiments of the present application include a detection device 330, a cloud server 340, and a human-computer interaction device 350. The type of the detection device 330 is set according to actual needs, and can be a moisture meter, a wind temperature sensor, and a grain temperature sensor, etc., which are not limited here. The detection device 330 is used to obtain parameters such as grain temperature, drying temperature, cracking rate, and grain moisture value, and then construct a drying curve for the grain based on the acquired parameters. The human-computer interaction device 350 is used to display the acquired parameters and display the drying curve corresponding to the grain. The human-computer interaction device 350 is also used to provide a human-computer interaction interface to facilitate the user to input instructions, which will not be repeated here.

[0132] Since a large amount of data needs to be processed when constructing a drying curve, the drying device in this embodiment also includes a cloud server 340 to process data through the cloud server 340. The acquired grain temperature, drying temperature, cracking rate and grain moisture value are uploaded to the cloud server 340, and the cloud server 340 generates and stores the drying curve of the grain. When it is necessary to dry the grain, the cloud server 340 sends the drying curve to the control device 310, and the control device 310 controls the drying device 320 to perform the drying operation based on the drying curve.

[0133] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0134] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0135] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0136] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0137] In a typical configuration, a device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0138] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. The memory is an example of a computer-readable medium.

[0139] Computer readable media include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. Information can be computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a device. As defined herein, computer readable media does not include temporary computer readable media (transitory media), such as modulated data signals and carrier waves.

[0140] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0141] The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included within the scope of the claims of the present application.

Claims

1. A method for constructing a drying curve, characterized in that: The drying curve construction method comprises: In response to the received curve building request, determining a target moisture stage corresponding to an initial moisture value of the grain; Determine the drying temperature corresponding to the target moisture stage as the real-time drying temperature; Based on the real-time drying temperature, controlling a drying device to dry the grains; According to the cracking rate and the real-time moisture value of the grains, the real-time drying temperature is reduced until the real-time moisture value reaches the target moisture value; A drying curve between the construction time and the real-time drying temperature.

2. The drying curve construction method according to claim 1, characterized in that: The step of reducing the real-time drying temperature according to the cracking rate and the real-time moisture value of the grains comprises: Obtaining the cracking rate, real-time moisture value and grain temperature of the grain within the first interval; According to the grain bursting rate in the first time interval, determining the increase value of the grain bursting rate in the first time interval; Determining a grain temperature increase value within the first time interval according to the grain temperature of the grain within the first time interval; When the preset conditions are met, the real-time drying temperature is lowered according to the bursting rate and the real-time moisture value of the grain within the first interval time, wherein the preset conditions are at least one of the bursting rate growth value within the first interval time exceeding the bursting rate growth threshold, and the grain temperature growth value within the first interval time exceeding the grain temperature growth threshold.

3. The drying curve construction method according to claim 2, characterized in that: The step of reducing the real-time drying temperature according to the cracking rate and the real-time moisture value of the grains within the first time interval includes: Determining a temperature adjustment coefficient according to the cracking rate of the grains within the first time interval; Determine a temperature drop amplitude value based on the real-time moisture value of the grain within the first time interval, the minimum temperature adjustment value of the drying device, and the real-time drying temperature; The real-time drying temperature is reduced according to the temperature adjustment coefficient and the temperature drop amplitude value.

4. The drying curve construction method according to claim 1, characterized in that: The drying curve between the construction time and the real-time drying temperature includes: Fitting the time-varying data of the real-time drying temperature during the drying of the grains to construct an initial curve of the real-time drying temperature; Obtaining the growth value of the bursting rate of the grain in each second interval time; Determine three dividing points according to the increase value of the cracking rate of the grains in each second interval time; Based on the initial curve and the three dividing points, three drying stages are obtained, wherein the drying temperature corresponding to each drying stage is a fixed value, and the drying temperatures corresponding to the three drying stages decrease successively over time; According to the drying temperature corresponding to each drying stage, a drying curve between time and the real-time drying temperature is constructed.

5. The drying curve construction method according to claim 1, characterized in that: The target moisture stage includes a first moisture stage, a second moisture stage and a third moisture stage, and the moisture value ranges corresponding to the first moisture stage, the second moisture stage and the third moisture stage decrease in sequence; The step of determining the drying temperature corresponding to the target moisture stage as the real-time drying temperature includes: When the target moisture stage is the first moisture stage or the second moisture stage, the drying temperature corresponding to the target moisture stage is determined as the real-time drying temperature.

6. The drying curve construction method according to claim 5, characterized in that: The drying temperature corresponding to the first moisture stage is a first temperature, the drying temperature corresponding to the second moisture stage is a second temperature, and the drying temperature corresponding to the third moisture stage is a third temperature, the first temperature is greater than the second temperature, and the second temperature is greater than the third temperature; The curve construction method further includes: When the target moisture stage is the third moisture stage, a drying curve in which the real-time drying temperature is constant at the third temperature is constructed.

7. A method for drying grains, characterized in that: The grain drying method comprises: In response to the received grain drying request, obtaining a drying curve corresponding to the target grain, wherein the drying curve is obtained according to the drying curve construction method according to any one of claims 1 to 6; Based on the drying curve, a drying device is controlled to dry the target grains.

8. A control device, characterized in that: include: a memory configured to store instructions; A processor is configured to call the instruction from the memory and to implement the drying curve construction method according to any one of claims 1 to 6, or the grain drying method according to claim 7 when executing the instruction.

9. A drying device, characterized in that: include: The control device according to claim 8; A drying device is configured to dry grain.

10. A machine-readable storage medium, characterized in that: The machine-readable storage medium stores instructions for enabling the machine to execute the drying curve construction method according to any one of claims 1 to 6, or the grain drying method according to claim 7.

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