A control method, device and equipment for preventing overloading of a discharging motor of a dryer

Abstract

The application relates to a control method, device and equipment for preventing overloading of a discharging motor of a dryer, which comprises the following steps: determining an initial discharging interval of to-be-discharged grains according to the grain type, initial moisture of the to-be-discharged grains, target moisture, atmospheric humidity and working temperature of a burner of the dryer; if the initial discharging interval meets preset time conditions corresponding to the to-be-discharged grains, the initial discharging interval is determined as a target discharging interval; if the initial discharging interval is less than a grain drying moisture time, the initial discharging interval is adjusted until the adjusted discharging interval meets the time conditions, and the adjusted discharging interval is determined as the target discharging interval; and discharging of a discharging gate of a discharging bin to the dryer for drying is controlled according to the target discharging interval. Through the method, the time required for determining the target discharging interval is shortened, and the method has good applicability for long-time continuous operation or short-time operation.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery technology, and more specifically, to a control method, device, and equipment for preventing overload of the unloading motor in a dryer. Background Technology

[0002] The discharge frequency of a continuous dryer is related to the discharge interval. The shorter the interval, the more grain can be discharged in the same amount of time. However, since the rotation speed of the unloading machine is fixed, the discharge interval should not be less than the minimum threshold. If the interval is too short, grain may accumulate in the discharge bin, causing the unloading motor to fail to rotate and resulting in overload.

[0003] In existing technologies, the target grain discharge interval time determined through multiple rounds of adjustment is not precise; it is only a rough range. From the perspective of long-term operation, it cannot fully utilize the equipment's performance. While foreign methods use mathematical models and machine learning to calculate the target grain discharge interval time are accurate, they require significant time to train the model for each operation, resulting in high time costs. This approach is more suitable for long-term, continuous operations; multiple short-duration operations yield poor results. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a control method, device and equipment for preventing overload of the unloading motor of a dryer, and to solve at least one of the above-mentioned technical problems.

[0005] Firstly, the technical solution of the present invention to solve the above-mentioned technical problems is as follows: a control method for preventing overload of the unloading motor of a dryer, the method comprising:

[0006] Obtain the grain type, initial moisture content, target moisture content, atmospheric humidity, and burner operating temperature of the grain to be discharged from the unloading silo;

[0007] The initial discharge interval time of the grain to be discharged is determined based on the grain type, the initial moisture content of the grain, the target moisture content, the atmospheric humidity, and the burner operating temperature.

[0008] If the initial grain discharge interval time meets the preset time condition corresponding to the grain to be discharged, the initial grain discharge interval time is determined as the target grain discharge interval time. The time condition is that the grain discharge interval time is not less than the minimum threshold of the grain discharge interval time corresponding to the grain to be discharged, and the grain discharge interval time is not less than the grain drying moisture time corresponding to the grain to be discharged.

[0009] If the initial grain discharge interval is less than the grain drying time, the initial grain discharge interval is adjusted until the adjusted grain discharge interval meets the time condition, and the adjusted grain discharge interval is determined as the target grain discharge interval.

[0010] The grain discharge gate of the unloading silo is controlled to discharge grain into the dryer for drying according to the target grain discharge interval time.

[0011] The beneficial effects of this invention are as follows: Based on the relationship between grain type, initial grain moisture content, target moisture content, atmospheric humidity, burner operating temperature of the dryer, and grain discharge interval, the initial grain discharge interval of the grain to be discharged from the unloading hopper can be accurately determined. Then, based on preset time conditions and the initial grain discharge interval, the initial grain discharge interval is continuously adjusted to make the obtained target grain discharge interval more accurate. This allows the grain discharge gate of the unloading hopper to discharge grain into the dryer for drying based on the target grain discharge interval, preventing overload of the unloading motor. Furthermore, this scheme can greatly shorten the time required to determine the target grain discharge interval, and has good applicability for both long-term continuous operation and short-term operation.

[0012] Based on the above technical solution, the present invention can be further improved as follows.

[0013] Furthermore, the determination of the initial discharge interval time of the grain to be discharged based on the grain type, the initial moisture content of the grain, the target moisture content, the atmospheric humidity, and the burner operating temperature includes:

[0014] The drying coefficient and compensation value corresponding to the grain to be discharged are determined based on the grain type, the atmospheric humidity, and the burner operating temperature.

[0015] The initial discharge interval time of the grain to be discharged is determined based on the initial moisture content, target moisture content, burner operating temperature, drying coefficient, and compensation value of the grain to be discharged.

[0016] The beneficial effect of adopting the above-mentioned further scheme is that different grain types, different atmospheric humidity, and different burner operating temperatures correspond to different drying coefficients and different compensation values. Therefore, based on the grain type, atmospheric humidity, and burner operating temperature of the grain to be discharged, the initial grain discharge interval time can be accurately determined.

[0017] Furthermore, for grains of the same type and under the same atmospheric humidity, different burner operating temperatures correspond to different drying coefficients and different compensation values.

[0018] The beneficial effect of adopting the above-mentioned further scheme is that, considering the influence of different burner operating temperatures and different atmospheric humidity on the drying coefficient and compensation value, the initial grain discharge interval time can be accurately determined.

[0019] Furthermore, the minimum threshold for the discharge interval time corresponding to the aforementioned grains to be discharged is determined based on the following method:

[0020] Obtain the actual weight and time of the grain to be discharged during one discharge cycle.

[0021] The actual discharge rate is determined based on the actual discharge weight and the actual discharge time.

[0022] Obtain the theoretical discharge weight of the grain unloading silo in one discharge cycle;

[0023] The theoretical discharge time is determined based on the actual discharge rate and the theoretical discharge weight.

[0024] The average of the actual discharge time and the theoretical discharge time is determined as the minimum threshold for the discharge interval time.

[0025] The beneficial effect of adopting the above-mentioned further scheme is that, considering the error between the actual grain discharge situation and the theoretical grain discharge situation, the minimum threshold for the grain discharge interval time can be accurately determined by taking this error into account when determining the minimum threshold for the grain discharge interval time.

[0026] Furthermore, the method also includes:

[0027] When grain accumulates in the unloading silo, a shutdown command is generated to shut down the unloading machine and the burner, while keeping the dryer's exhaust fan, circulating fan, exhaust fan louvers, and waste gas circulation louvers open.

[0028] The beneficial effect of adopting the above-mentioned further solution is that when grain accumulates in the unloading silo, timely control of the burners and other equipment of the unloading machine and dryer can maintain ventilation inside the tower and cool down the grain, avoiding over-drying.

[0029] Furthermore, the grain drying time corresponding to the grain to be discharged is determined based on the target moisture content and output moisture content of the grain to be discharged.

[0030] The advantage of adopting the above-mentioned further scheme is that, considering that different types of grains have different target moisture content, the grain drying time can be accurately determined based on the target moisture content of the grains to be dried.

[0031] Secondly, to solve the above-mentioned technical problems, the present invention also provides a control device for preventing overload of the unloading motor of a dryer, comprising:

[0032] The acquisition module is used to acquire the grain type, initial moisture content, target moisture content, atmospheric humidity, and burner operating temperature of the grain to be discharged in the unloading silo.

[0033] The initial grain discharge interval time determination module is used to determine the initial grain discharge interval time of the grain to be discharged based on the grain type, the initial moisture content of the grain, the target moisture content, the atmospheric humidity, and the burner operating temperature.

[0034] The first processing module is used to determine the initial grain discharge interval as the target grain discharge interval when the initial grain discharge interval meets the preset time condition corresponding to the grain to be discharged. The time condition is that the grain discharge interval is not less than the minimum threshold of the grain discharge interval corresponding to the grain to be discharged, and the grain discharge interval is not less than the grain drying moisture time corresponding to the grain to be discharged.

[0035] The second processing module is used to adjust the initial grain discharge interval time when the initial grain discharge interval time is less than the grain drying time, until the adjusted grain discharge interval time meets the time condition, and then determine the adjusted grain discharge interval time as the target grain discharge interval time.

[0036] The drying module is used to control the discharge gate of the unloading silo to discharge grain into the dryer for drying according to the target grain discharge interval time.

[0037] Thirdly, in order to solve the above-mentioned technical problems, the present invention also provides an electronic device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the control method of the present application for preventing overload of the unloading motor of the dryer.

[0038] Fourthly, in order to solve the above-mentioned technical problems, the present invention also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the control method of the dryer for preventing overload of the unloading motor of the present application.

[0039] Fifthly, in order to solve the above-mentioned technical problems, the present invention also provides a dryer, which includes the electronic equipment described in the third aspect.

[0040] Additional aspects and advantages of this application will be set forth in part in the description which follows, and will become apparent from the description or may be learned by practice of this application. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below.

[0042] Figure 1 A flowchart illustrating a control method for preventing overload of the unloading motor in a dryer, provided in one embodiment of the present invention;

[0043] Figure 2 A flowchart illustrating another control method for preventing overload of the unloading motor in a dryer, provided in an embodiment of the present invention;

[0044] Figure 3 This is a schematic diagram of a control device for preventing overload of the unloading motor in a dryer, provided in one embodiment of the present invention.

[0045] Figure 4 This is a schematic diagram of the structure of an electronic device provided in one embodiment of the present invention. Detailed Implementation

[0046] The principles and features of the present invention are described below. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0047] The technical solution of the present invention and how the technical solution of the present invention solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of the present invention will now be described with reference to the accompanying drawings.

[0048] The solution provided in this invention can be applied to any application scenario requiring a dryer to dry grain discharged from a grain silo. The solution provided in this invention can be executed by an electronic device with data processing capabilities.

[0049] This invention provides a possible implementation, such as... Figure 1 The diagram shows a flowchart of a control method for preventing overload of the unloading motor in a dryer. This method can be executed by any electronic device, such as an electronic device with data processing capabilities on the dryer (which may be a continuous dryer), or an electronic device that is communicatively connected to the dryer. For ease of description, the method provided in this embodiment will be described below using an electronic device (e.g., a PLC controller) as the execution subject. Figure 1 The flowchart shown indicates that the method may include the following steps:

[0050] S1, obtain the grain type, initial moisture content, target moisture content, atmospheric humidity, and burner operating temperature of the grain to be discharged in the unloading silo;

[0051] S2, determine the initial discharge interval time of the grain to be discharged based on the grain type, the initial moisture content of the grain, the target moisture content, the atmospheric humidity, and the burner operating temperature;

[0052] S3, if the initial grain discharge interval time meets the preset time condition corresponding to the grain to be discharged, the initial grain discharge interval time is determined as the target grain discharge interval time. The time condition is that the grain discharge interval time is not less than the minimum threshold of the grain discharge interval time corresponding to the grain to be discharged, and the grain discharge interval time is not less than the grain drying moisture time corresponding to the grain to be discharged.

[0053] S4. If the initial grain discharge interval time is less than the grain drying time, the initial grain discharge interval time is adjusted until the adjusted grain discharge interval time meets the time condition, and the adjusted grain discharge interval time is determined as the target grain discharge interval time.

[0054] S5, according to the target grain discharge interval time, control the grain discharge gate of the unloading silo to discharge grain to the dryer for drying.

[0055] The method of this invention accurately determines the initial discharge interval of grain in the unloading silo based on the relationship between grain type, initial grain moisture content, target moisture content, atmospheric humidity, burner operating temperature of the dryer, and grain discharge interval. Then, based on preset time conditions and the initial discharge interval, the initial discharge interval is continuously adjusted to make the obtained target discharge interval more accurate. This allows the discharge gate of the unloading silo to discharge grain into the dryer for drying, preventing overload of the unloading motor. Furthermore, this scheme significantly reduces the time required to determine the target discharge interval, making it suitable for both long-term continuous operation and short-term operation.

[0056] The following specific embodiments will further illustrate the solution of the present invention. In this embodiment, the hardware involved in the solution and the connection relationship between the hardware will be introduced first, so as to better understand the control method for preventing overload of the unloading motor of the dryer proposed in this solution.

[0057] In this embodiment, the grain to be discharged is placed in the unloading bin, which has a discharge gate. The unloading bin can be controlled by a corresponding controller, mainly controlling the opening and closing of the discharge gate.

[0058] The grain discharged from the unloading silo's discharge gate enters a dryer for drying. The dryer includes a burner, exhaust fan, circulating fan, exhaust fan louvers, and waste gas recirculation louvers. The dryer is controlled by a corresponding controller, which mainly controls the opening and closing of each device among the burner, exhaust fan, circulating fan, exhaust fan louvers, and waste gas recirculation louvers.

[0059] The controller for the dryer and the controller for the unloading silo can be the same controller or different controllers. If they are different controllers, they can communicate with each other and share a common control logic to jointly control the unloading silo and the dryer. Alternatively, the different controllers can be connected through a single controller to send control commands to the controllers for the dryer and the unloading silo based on that single controller.

[0060] Based on the above hardware description, this paper introduces a control method for preventing overload of the unloading motor in a dryer, which may include the following steps:

[0061] S1, obtain the grain type, initial moisture content, target moisture content, atmospheric humidity, and burner operating temperature of the grain to be discharged in the unloading silo;

[0062] Here, "grain type" refers to different types of crops, such as corn and wheat. "Initial moisture content" refers to the moisture content of the grain before it passes through the dryer, while "target moisture content" refers to the desired moisture content of the grain after it has passed through the dryer.

[0063] Different weather conditions correspond to different atmospheric humidity levels, and the operating temperature of the burner changes continuously during operation.

[0064] S2, determine the initial discharge interval time of the grain to be discharged based on the grain type, the initial moisture content of the grain, the target moisture content, the atmospheric humidity, and the burner operating temperature;

[0065] Optionally, in S2 above, determining the initial discharge interval time of the grain to be discharged based on the grain type, the initial moisture content of the grain, the target moisture content, the atmospheric humidity, and the burner operating temperature includes:

[0066] S21, determine the drying coefficient and compensation value corresponding to the grain to be discharged based on the grain type, the atmospheric humidity and the burner operating temperature;

[0067] S22, determine the initial discharge interval time of the grain to be discharged based on the initial moisture content, target moisture content, burner operating temperature, drying coefficient, and compensation value of the grain to be discharged.

[0068] For grains of the same type and under the same atmospheric humidity, different burner operating temperatures correspond to different drying coefficients and different compensation values. For grains of the same type and under the same burner operating temperature, different atmospheric humidity levels correspond to different drying coefficients and different compensation values.

[0069] This plan involves pre-testing corn and wheat with different initial moisture contents and target moisture contents under different weather conditions. The tests are divided into univariate drying tests and multivariate drying tests, i.e., drying tests where only one or a few variables are changed while other variables remain the same. All relevant data are collected, categorized, and analyzed. The data variation characteristics are obtained through analysis, and a multinomial fitting model is established accordingly. The model's predicted values ​​are compared with the actual values ​​during the drying process, and the rationality and correctness of the algorithm are continuously corrected until the error between the predicted and actual values ​​is ±5 seconds. The final formula for calculating the initial grain discharge interval time is as follows:

[0070] T=k1*(MSTR1-MSTR2)+k2*TMP-k3*(MSTR1-MSTR2)^2-k4*(MSTR 1-MSTR2)*TMP+C(1)

[0071] Where T is the initial grain discharge interval time, MSTR1 is the initial moisture content of the grain, MSTR2 is the target moisture content, TMP is the burner operating temperature, k1 is the drying coefficient 1, k2 is the drying coefficient 2, k3 is the drying coefficient 3, k4 is the drying coefficient 4, and C is the compensation value.

[0072] That is, the above formula (1) is one possible way to implement the above S2.

[0073] As an example, taking corn and wheat as examples, the drying coefficient and compensation value of the same grain are different at different burner operating temperatures.

[0074] For corn, when the atmospheric humidity (HUM) is less than 65% (65% is a set value and can be adjusted);

[0075] 1. When 100℃ <= TMP <= 120℃,

[0076] T=29.599*(MSTR1-MSTR2)-0.38*TMP+0.00061*(MSTR1-MSTR2)^2-0.15*(MSTR1-MSTR2)*TMP+65.14;

[0077] 2. When 80℃ <= TMP <= 99℃,

[0078] T=72.79*(MSTR1-MSTR2)-1.438*TMP+0.0001974*(MSTR1-MSTR2)^2-0.5719*(MSTR1-MSTR2)*TMP+173.4;

[0079] 3. When 35℃ <= TMP <= 79℃,

[0080] T=75.64*(MSTR1-MSTR2)-1.438*TMP+0.00024*(MSTR1-MSTR2)^2-0.61*(MSTR1-MSTR2)*TMP+179.4;

[0081] For corn, when the atmospheric humidity (HUM) is greater than or equal to 65%;

[0082] 1. When 100℃ <= TMP <= 120℃,

[0083] T=25.33*(MSTR1-MSTR2)-0.2478*TMP+0.00012*(MSTR1-MSTR2)^2-0.105*(MSTR1-MSTR2)*TMP+53.01;

[0084] 2. When 80℃ <= TMP <= 99℃,

[0085] T=66.85*(MSTR1-MSTR2)-1.272*TMP+0.0000797*(MSTR1-MSTR2)^2-0.51*(MSTR1-MSTR2)*TMP+157.5;

[0086] 3. When 35℃ <= TMP <= 79℃,

[0087] T=75.64*(MSTR1-MSTR2)-1.438*TMP+0.00024*(MSTR1-MSTR2)^2-0.61*(MSTR1-MSTR2)*TMP+179.4.

[0088] For wheat, without considering atmospheric humidity:

[0089] 1. When 76℃ <= TMP <= 95℃,

[0090] T=29.95*(MSTR1-MSTR2)+0.07353*TMP+0.0005053*(MSTR1-MSTR2)^2-0.1379*(MSTR1-MSTR2)*TMP-10.85;

[0091] 2. When 50℃ <= TMP <= 75℃,

[0092] T=99.03*(MSTR1-MSTR2)+0.5433*TMP-0.00007171*(MSTR1-MSTR2)^2-1.068*(MSTR1-MSTR2)*TMP+59.36;

[0093] 3. When 35℃ <= TMP <= 49℃,

[0094] T=-100.5*(MSTR1-MSTR2)-72.17*TMP-0.01829*(MSTR1-MSTR2)^2+2.886*(MSTR1-MSTR2)*TMP+3625.

[0095] S3, if the initial grain discharge interval time meets the preset time condition corresponding to the grain to be discharged, the initial grain discharge interval time is determined as the target grain discharge interval time. The time condition is that the grain discharge interval time is not less than the minimum threshold of the grain discharge interval time corresponding to the grain to be discharged, and the grain discharge interval time is not less than the grain drying moisture time corresponding to the grain to be discharged.

[0096] Optionally, the minimum threshold for the discharge interval time corresponding to the aforementioned grains to be discharged is determined based on the following method:

[0097] S11, obtain the actual weight and actual time of the grain to be discharged during one discharge;

[0098] Optionally, in this scheme, the grain can be weighed each time it is discharged, so the actual discharged grain weight can be the average of the results of multiple discharge weighings. Similarly, each discharge corresponds to a discharge time, so the actual discharge time can be the average of multiple discharge times.

[0099] S12, determine the actual discharge rate based on the actual discharge weight and the actual discharge time, i.e., actual discharge weight / actual discharge time.

[0100] S13, obtain the theoretical discharge weight (e.g., 800 kg) of the grain unloading silo for one discharge;

[0101] S14. Determine the theoretical discharge time based on the actual discharge rate and the theoretical discharge weight, i.e., theoretical discharge weight / (actual discharge weight / actual discharge time).

[0102] S15, the average of the actual discharge time and the theoretical discharge time is determined as the minimum threshold of the discharge interval time.

[0103] As an example, let WG1 be the weight of corn discharged each time (actual discharged weight) and t1 be the time required for each discharge (actual discharge time), then the actual discharge rate is WG1 / t1; for wheat, let WG2 be the weight of wheat discharged each time (actual discharged weight) and t2 be the time required for each discharge (actual discharge time), then the actual discharge rate is WG2 / t2. Assuming each discharge is 800 kg (theoretical discharge weight), and the time required to complete each discharge (theoretical discharge time) is 800 / (WG1 / t1) for corn and 800 / (WG2 / t2) for wheat, then averaging these values ​​yields the minimum threshold for the discharge interval: [t1 + 800 / (WG1 / t1)] / 2 for corn and [t2 + 800 / (WG2 / t2)] / 2 for wheat.

[0104] Optionally, both wheat and corn are dried to a target moisture content of 13%.

[0105] Optionally, the grain drying time corresponding to the grain to be discharged is determined based on the target moisture content and output moisture content of the grain to be discharged.

[0106] The time required for the moisture content of the grain to rise from its initial level to the target level is the grain drying time. In practical applications, the moisture content of the grain being discharged (i.e., the real-time moisture content of the grain discharged from the unloading silo) can be monitored continuously. Based on whether the monitored moisture content reaches the target level, it can be determined whether the initial discharge time interval needs adjustment. If the target moisture content is not reached, the initial discharge time interval is adjusted until it is reached; if the target moisture content is reached, no adjustment of the initial discharge time interval is necessary.

[0107] S4. If the initial grain discharge interval time is less than the grain drying time, the initial grain discharge interval time is adjusted until the adjusted grain discharge interval time meets the time condition, and the adjusted grain discharge interval time is determined as the target grain discharge interval time.

[0108] S5, according to the target grain discharge interval time, control the grain discharge gate of the unloading silo to discharge grain to the dryer for drying.

[0109] Optionally, the method further includes:

[0110] When grain accumulates in the unloading silo, a shutdown command is generated to shut down the unloading machine and the burner, while keeping the dryer's exhaust fan, circulating fan, exhaust fan louvers, and waste gas circulation louvers open.

[0111] Optionally, the unloading machine can be shut down based on the sensor to detect whether grain is accumulating in the unloading bin. If grain accumulation occurs, the unloading machine can be shut down based on the shutdown command to prevent the unloading motor from overloading, the burner can be shut down, and the exhaust fan, circulating fan, exhaust fan louvers, and exhaust gas circulation louvers can be kept open to maintain ventilation in the tower and cool the grain to avoid over-drying.

[0112] To better illustrate and understand the principle of the method provided by this invention, the following description uses an optional specific embodiment to illustrate the solution of this invention. It should be noted that the specific implementation of each step in this specific embodiment should not be construed as a limitation of the solution of this invention. Other implementations that can be conceived by those skilled in the art based on the principle of the solution provided by this invention should also be considered within the scope of protection of this invention.

[0113] See Figure 2 The control method for preventing overload of the unloading motor of a dryer provided in this embodiment includes the following steps:

[0114] 1. Obtain the initial moisture content of the grain, the target moisture content of the grain, the grain type, the atmospheric humidity, and the burner operating temperature of the dryer;

[0115] 2. Calculate the moisture difference of the grain based on the initial moisture content and the target moisture content of the grain;

[0116] 3. Calculate the drying coefficient and compensation value based on the grain type;

[0117] 4. Calculate and set the initial grain discharge interval time based on formula (1);

[0118] 5. The moisture meter detects whether the moisture content of the discharged grain meets the target moisture content. If it does, it means that there is no need to adjust the initial discharge interval time, and the discharge gate can be controlled to discharge the grain.

[0119] 6. If the moisture content of the discharged grain does not meet the target moisture content, fine-tune the discharge interval time (initial discharge interval time) until it meets the target moisture content;

[0120] 7. During the grain unloading process, determine whether grain has accumulated in the unloading bin. Figure 2 If the unloading silo is blocked and grain accumulates, turn off the burner and the unloading machine, keep the exhaust fan, circulating fan, exhaust fan louvers, and exhaust gas circulating louvers running, and close the grain discharge gate.

[0121] Compared with the prior art, the solution of the present invention has the following advantages:

[0122] 1. The method of this invention is based on research on large-scale grain dryers. In the test environment, the amount of grain being dried is huge and the scale of the operation is large. Once the unloading motor is overloaded and fails, the labor cost, time cost and equipment cost required for repair or replacement are high. Moreover, the equipment replacement operation is difficult and requires damage to the integrity of the equipment for repair. During this period, the operation cannot be carried out, and the drying operation will be delayed to a large extent, missing the appropriate grain drying time.

[0123] 2. Considering the tight drying cycle in the application scenarios of drying equipment, high equipment quality, reliability, and quick and convenient maintenance are particularly important. The control algorithm of this invention can greatly ensure that blockages will not occur during grain discharge, avoiding overload damage to the unloading motor.

[0124] 3. Grain moisture detection can continuously provide feedback on whether the currently set grain discharge interval has brought the grain to the target moisture value, and make fine adjustments to the initial grain discharge interval. It can provide intuitive results for easy user operation.

[0125] 4. The minimum threshold for the grain discharge interval time limits the value that users can set for the grain discharge interval time, preventing improper user operation from causing grain accumulation.

[0126] 5. Multiple fine-tuning of the initial grain discharge time intervals can continuously optimize and improve the grain drying and discharge rates, reducing user working time.

[0127] Based on and Figure 1 Based on the same principle as the method shown, this embodiment of the invention also provides a control device 20 for preventing overload of the unloading motor in a dryer, such as... Figure 3 As shown, the control device 20 for preventing overload of the unloading motor in the dryer may include an acquisition module 210, an initial discharge interval time determination module 220, a first processing module 230, a second processing module 240, and a drying module 250, wherein:

[0128] The acquisition module 210 is used to acquire the grain type, initial moisture content, target moisture content, atmospheric humidity, and burner operating temperature of the grain to be discharged in the unloading silo.

[0129] The initial grain discharge interval determination module 220 is used to determine the initial grain discharge interval of the grain to be discharged based on the grain type, the initial moisture content of the grain, the target moisture content, the atmospheric humidity, and the burner operating temperature.

[0130] The first processing module 230 is used to determine the initial grain discharge interval as the target grain discharge interval when the initial grain discharge interval meets the preset time condition corresponding to the grain to be discharged. The time condition is that the grain discharge interval is not less than the minimum threshold of the grain discharge interval corresponding to the grain to be discharged, and the grain discharge interval is not less than the grain drying moisture time corresponding to the grain to be discharged.

[0131] The second processing module 240 is used to adjust the initial grain discharge interval time when the initial grain discharge interval time is less than the grain drying time, until the adjusted grain discharge interval time meets the time condition, and to determine the adjusted grain discharge interval time as the target grain discharge interval time.

[0132] The drying module 250 is used to control the discharge gate of the unloading silo to discharge grain to the dryer for drying according to the target grain discharge interval time.

[0133] Optionally, when determining the initial discharge interval time of the grain to be discharged based on the grain type, the initial moisture content of the grain, the target moisture content, the atmospheric humidity, and the burner operating temperature, the above-mentioned initial discharge interval time determination module 220 is specifically used for:

[0134] The drying coefficient and compensation value corresponding to the grain to be discharged are determined based on the grain type, the atmospheric humidity, and the burner operating temperature.

[0135] The initial discharge interval time of the grain to be discharged is determined based on the initial moisture content, target moisture content, burner operating temperature, drying coefficient, and compensation value of the grain to be discharged.

[0136] Optionally, for grains of the same type and under the same atmospheric humidity, different burner operating temperatures correspond to different drying coefficients and different compensation values, and for grains of the same type and under the same burner operating temperature, different atmospheric humidity corresponds to different drying coefficients and different compensation values.

[0137] Optionally, the minimum threshold for the discharge interval time corresponding to the aforementioned grains to be discharged is determined based on the following method:

[0138] Obtain the actual weight and time of the grain to be discharged during one discharge cycle.

[0139] The actual discharge rate is determined based on the actual discharge weight and the actual discharge time.

[0140] Obtain the theoretical discharge weight of the grain unloading silo in one discharge cycle;

[0141] The theoretical discharge time is determined based on the actual discharge rate and the theoretical discharge weight.

[0142] The average of the actual discharge time and the theoretical discharge time is determined as the minimum threshold for the discharge interval time.

[0143] Optionally, the device may also include:

[0144] The control module is used to generate a shutdown command when grain accumulates in the unloading silo, so as to shut down the unloading machine and the burner based on the shutdown command, while keeping the exhaust fan, circulating fan, exhaust fan louvers and exhaust gas circulating louvers of the dryer open.

[0145] Optionally, the grain drying time corresponding to the grain to be discharged is determined based on the target moisture content and output moisture content of the grain to be discharged.

[0146] The control device for preventing overload of the dryer unloading motor in this embodiment of the invention can execute the control method for preventing overload of the dryer unloading motor provided in this embodiment of the invention. The implementation principle is similar. The actions performed by each module and unit in the control device for preventing overload of the dryer unloading motor in each embodiment of the invention correspond to the steps in the control method for preventing overload of the dryer unloading motor in each embodiment of the invention. For detailed functional descriptions of each module of the control device for preventing overload of the dryer unloading motor, please refer to the descriptions in the corresponding control methods for preventing overload of the dryer unloading motor shown above, which will not be repeated here.

[0147] The control device for preventing overload of the unloading motor of the dryer can be a computer program (including program code) running on a computer device. For example, the control device for preventing overload of the unloading motor of the dryer is an application software. The device can be used to execute the corresponding steps in the method provided in the embodiments of the present invention.

[0148] In some embodiments, the control device for preventing overload of the unloading motor of the dryer provided in this embodiment of the invention can be implemented in a combination of hardware and software. As an example, the control device for preventing overload of the unloading motor of the dryer provided in this embodiment of the invention can be a processor in the form of a hardware decoding processor, which is programmed to execute the control method for preventing overload of the unloading motor of the dryer provided in this embodiment of the invention. For example, the processor in the form of a hardware decoding processor can be one or more application-specific integrated circuits (ASICs), DSPs, programmable logic devices (PLDs), complex programmable logic devices (CPLDs), field-programmable gate arrays (FPGAs), or other electronic components.

[0149] In other embodiments, the control device for preventing overload of the unloading motor in the dryer provided in this invention can be implemented in software. Figure 3A control device for preventing overload of the unloading motor of a dryer, stored in a memory, is shown. It can be software in the form of programs and plug-ins, and includes a series of modules, including an acquisition module 210, an initial discharge interval time determination module 220, a first processing module 230, a second processing module 240, and a drying module 250, for implementing the control method for preventing overload of the unloading motor of a dryer provided in the embodiments of the present invention.

[0150] The modules described in the embodiments of the present invention can be implemented in software or hardware. The names of the modules are not, in some cases, limiting the scope of the module itself.

[0151] Based on the same principles as the methods shown in the embodiments of the present invention, the embodiments of the present invention also provide an electronic device, which may include, but is not limited to: a processor and a memory; the memory for storing computer programs; and the processor for executing the methods shown in any embodiment of the present invention by invoking the computer programs.

[0152] In one alternative embodiment, an electronic device is provided, such as Figure 4 As shown, Figure 4 The illustrated electronic device 4000 includes a processor 4001 and a memory 4003. The processor 4001 and the memory 4003 are connected, for example, via a bus 4002. Optionally, the electronic device 4000 may further include a transceiver 4004, which can be used for data interaction between the electronic device and other electronic devices, such as sending and / or receiving data. It should be noted that in practical applications, the transceiver 4004 is not limited to one type, and the structure of the electronic device 4000 does not constitute a limitation on the embodiments of the present invention.

[0153] Processor 4001 may be a CPU (Central Processing Unit), a general-purpose processor, a DSP (Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It can implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure of this invention. Processor 4001 may also be a combination that implements computational functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, etc.

[0154] Bus 4002 may include a pathway for transmitting information between the aforementioned components. Bus 4002 may be a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus, etc. Bus 4002 can be divided into address bus, data bus, control bus, etc. For ease of representation, Figure 4 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0155] The memory 4003 may be ROM (Read Only Memory) or other types of static storage devices capable of storing static information and instructions, RAM (Random Access Memory) or other types of dynamic storage devices capable of storing information and instructions, or EEPROM (Electrically Erasable Programmable Read Only Memory), CD-ROM (Compact Disc Read Only Memory) or other optical disc storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital universal optical discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, but not limited thereto.

[0156] The memory 4003 stores the application code (computer program) for executing the present invention, and its execution is controlled by the processor 4001. The processor 4001 executes the application code stored in the memory 4003 to implement the content shown in the foregoing method embodiments.

[0157] Among these, electronic devices can also be terminal devices. Figure 4 The electronic device shown is merely an example and should not be construed as limiting the functionality and scope of use of the embodiments of the present invention.

[0158] This invention provides a computer-readable storage medium storing a computer program that, when run on a computer, enables the computer to execute the corresponding content in the aforementioned method embodiments.

[0159] According to another aspect of the present invention, a computer program product or computer program is also provided, comprising computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the computer device to perform the methods provided in the various embodiments described above.

[0160] Computer program code for performing the operations of this invention can be written in one or more programming languages ​​or a combination thereof. These programming languages ​​include object-oriented programming languages—such as Java, Smalltalk, and C++—and conventional procedural programming languages—such as the "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0161] It should be understood that the flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of methods and computer program products according to various embodiments of the present invention. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, may be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0162] The computer-readable storage medium provided in this invention can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of a computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof. In this invention, a computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device.

[0163] The aforementioned computer-readable storage medium carries one or more programs, which, when executed by the electronic device, cause the electronic device to perform the method shown in the above embodiments.

[0164] The above description is merely a preferred embodiment of the present invention and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of disclosure in this invention is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this invention.

Claims

1. A control method for preventing overload of the unloading motor in a dryer, characterized in that, Includes the following steps: Obtain the grain type, initial moisture content, target moisture content, atmospheric humidity, and burner operating temperature of the grain to be discharged from the unloading silo; The initial discharge interval time of the grain to be discharged is determined based on the grain type, the initial moisture content of the grain, the target moisture content, the atmospheric humidity, and the burner operating temperature. If the initial grain discharge interval time meets the preset time condition corresponding to the grain to be discharged, the initial grain discharge interval time is determined as the target grain discharge interval time. The time condition is that the grain discharge interval time is not less than the minimum threshold of the grain discharge interval time corresponding to the grain to be discharged, and the grain discharge interval time is not less than the grain drying moisture time corresponding to the grain to be discharged. If the initial grain discharge interval is less than the grain drying time, the initial grain discharge interval is adjusted until the adjusted grain discharge interval meets the time condition, and the adjusted grain discharge interval is determined as the target grain discharge interval. The grain discharge gate of the unloading silo is controlled to discharge grain into the dryer for drying according to the target grain discharge interval time.

2. The method according to claim 1, characterized in that, The step of determining the initial discharge interval time of the grain to be discharged based on the grain type, the initial moisture content of the grain, the target moisture content, the atmospheric humidity, and the burner operating temperature includes: The drying coefficient and compensation value corresponding to the grain to be discharged are determined based on the grain type, the atmospheric humidity, and the burner operating temperature. Based on the initial moisture content, target moisture content, burner operating temperature, drying coefficient, and compensation value of the grain to be discharged, the initial discharge interval time of the grain to be discharged is determined using the following formula: T=k1*(MSTR1-MSTR2)+k2*TMP-k3*(MSTR1-MSTR2)^2-k4*(MSTR1-MSTR2)*TMP+C Where T is the initial grain discharge interval time, MSTR1 is the initial moisture content of the grain, MSTR2 is the target moisture content, TMP is the burner operating temperature, k1 is the drying coefficient 1, k2 is the drying coefficient 2, k3 is the drying coefficient 3, k4 is the drying coefficient 4, and C is the compensation value.

3. The method according to claim 2, characterized in that, For grains of the same type and under the same atmospheric humidity, different burner operating temperatures correspond to different drying coefficients and different compensation values.

4. The method according to any one of claims 1 to 3, characterized in that, The minimum threshold for the discharge interval time corresponding to the grain to be discharged is determined based on the following method: Obtain the actual weight and time of one discharge of the grain to be discharged; The actual discharge rate is determined based on the actual discharge weight and the actual discharge time. Obtain the theoretical discharge weight of the grain unloading silo in one discharge cycle; The theoretical discharge time is determined based on the actual discharge rate and the theoretical discharge weight. The average of the actual discharge time and the theoretical discharge time is determined as the minimum threshold for the discharge interval time.

5. The method according to any one of claims 1 to 3, characterized in that, The method further includes: When grain accumulates in the unloading silo, a shutdown command is generated to shut down the unloading machine and the burner, while keeping the dryer's exhaust fan, circulating fan, exhaust fan louvers, and waste gas circulation louvers open.

6. The method according to any one of claims 1 to 3, characterized in that, The grain drying time corresponding to the grain to be discharged is determined based on the target moisture content and output moisture content of the grain to be discharged.

7. A control device for preventing overload of the unloading motor in a dryer, characterized in that, include: The acquisition module is used to acquire the grain type, initial moisture content, target moisture content, atmospheric humidity, and burner operating temperature of the grain to be discharged in the unloading silo. The initial grain discharge interval time determination module is used to determine the initial grain discharge interval time of the grain to be discharged based on the grain type, the initial moisture content of the grain, the target moisture content, the atmospheric humidity, and the burner operating temperature. The first processing module is used to determine the initial grain discharge interval as the target grain discharge interval when the initial grain discharge interval meets the preset time condition corresponding to the grain to be discharged. The time condition is that the grain discharge interval is not less than the minimum threshold of the grain discharge interval corresponding to the grain to be discharged, and the grain discharge interval is not less than the grain drying moisture time corresponding to the grain to be discharged. The second processing module is used to adjust the initial grain discharge interval time when the initial grain discharge interval time is less than the grain drying time, until the adjusted grain discharge interval time meets the time condition, and then determine the adjusted grain discharge interval time as the target grain discharge interval time. The drying module is used to control the discharge gate of the unloading silo to discharge grain into the dryer for drying according to the target grain discharge interval time.

8. An electronic device, characterized in that, It includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the computer program, implements the method of any one of claims 1-6.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the method of any one of claims 1-6.

10. A dryer, characterized in that, Including the electronic device as described in claim 8.

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