Grain storage regulation and control equipment based on grain condition monitoring

Abstract

The invention relates to the field of granary regulation and control, in particular to grain storage regulation and control equipment based on grain condition monitoring, which is used for solving the problem that the storage environment does not reach the standard or the equipment operation economy is insufficient due to insufficient region pertinence when the storage regulation and control equipment regulates and controls a granary. According to the invention, region division is carried out according to monitoring results of a plurality of monitoring points in the granary, an abnormal region with unbalanced environment control or substandard storage environment in the granary is accurately positioned, and then the abnormal region is specifically adjusted through the movable, rotary and telescopic adjustable air guide grid, so that air intake at the bottom of the granary has pertinence; the system improves the penetrability of the granary during ventilation, has a good ventilation effect on the deep part of the granary, monitors the regulation and control effect of the granary, carries out feedback regulation on the regulation and control of the granary according to the obtained regulation and control effect, and guarantees that the ventilation effect of the granary can reach an expected standard. And the operation economy of the regulation and control equipment is ensured while the grain storage environment reaches the standard.

Description

Technical Field

[0001] The present invention relates to the field of grain storage control, and in particular to grain storage control equipment based on grain condition monitoring. Background Art

[0002] Grain storage safety is the ballast stone of social stability. The moisture content of wheat after harvest is 18% to 20%, and that of corn and rice is even as high as 22% to 25%. They are extremely easy to deteriorate during the existing logistics and warehousing process. At the same time, the content of impurities such as straw fragments that are prone to mildew in grain is relatively high, which can easily cause the grain to mildew. With the increasingly tight grain supply, it is imperative to further reduce grain losses to increase grain self-sufficiency and solve the problems of green and intelligent grain logistics and safe storage technology. In order to reduce losses in grain logistics and storage, it is necessary to dry and clean the grain in time after harvest to reduce the moisture content and impurity content to the standards for warehousing. At the same time, it is necessary to control grain parameters such as temperature, humidity, and atmosphere to conduct multi-level information management and safety monitoring of storage.

[0003] At present, there are still some shortcomings in the grain storage control equipment in the prior art. The storage control equipment in the prior art is mainly ventilation and temperature control equipment that operates in a fixed mode. In actual use, due to the influence of environmental climate and grain storage conditions, the storage control equipment that operates in a fixed mode may not be accurate enough in the control position during operation, resulting in insufficient control effect, or long-term unified control may cause the area where the grain storage conditions meet the standards to always maintain excessive control, resulting in a large amount of energy waste. Therefore, there is a need for a device that can perform targeted control on different areas in the granary according to the grain storage conditions, so as to meet the requirements of the grain storage environment and the economic efficiency of the control equipment operation;

[0004] In view of the above technical problems, this application proposes a solution. Summary of the invention

[0005] In the present invention, multiple monitoring points are set inside the granary, and gradient analysis and regional division are performed according to the monitoring results of the multiple monitoring points, so as to accurately locate the abnormal areas in the granary where the environmental control is unbalanced or the storage environment does not meet the standards, and then the abnormal areas are targetedly adjusted through the movable, rotatable and telescopically adjustable air guide grille, so that the air intake at the bottom of the granary is targeted, and since the air intake area is reduced, the air intake pressure is increased, which improves the penetration of the granary during ventilation, and can have a good ventilation effect in the deep part of the granary, which not only ensures the adjustment effect but also reduces the energy consumed by the adjustment, so that the grain storage environment meets the standards while ensuring the economic efficiency of the operation of the control equipment, and solves the problem that the storage environment does not meet the standards or the equipment operation is insufficient due to the lack of regional targeting of the storage control equipment when controlling the granary, and proposes a grain storage control equipment based on grain condition monitoring.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] The grain storage control equipment based on grain condition monitoring comprises an air intake funnel, an air intake pipeline is connected to the lower part of the air intake funnel, a positioning ring is fixedly installed on the top of the air intake funnel, and an air intake grille is fixedly installed on the top of the positioning ring;

[0008] The inner wall of the air inlet funnel is movably connected to a folding rod through an axle seat, an air guide pipe is fixedly installed at the movable end of the folding rod, a coupling is installed in the middle of the air guide pipe, the coupling divides the air guide pipe into two sections, so that the upper section of the air guide pipe can rotate relative to the lower section, an air guide grid is fixedly installed on the top of the upper section of the air guide pipe, the bottom end of the air guide pipe is fixedly connected to the air collecting funnel, and a control module is installed inside the folding rod;

[0009] An air guide hole is provided at the position where the air guide grid is connected to the air guide pipe. The air guide hole can guide the gas in the air guide pipe to the top of the air guide grid. A group of telescopic grids are respectively sleeved at both ends of the air guide grid. The outer ends of the two groups of telescopic grids are movably connected to pulleys. The pulleys slide on the inside of the positioning ring. The upper surfaces of the air guide grid and the telescopic grid are in contact with the air intake grid.

[0010] As a preferred embodiment of the present invention, the control module is provided with a granary monitoring unit, a distribution analysis unit, a feedback control unit and a diffusion monitoring unit;

[0011] The granary monitoring unit sets a plurality of evenly distributed collection points in the granary to collect temperature and humidity information in the granary, obtains the temperature and humidity of each collection point, and packages the position of each collection point and the temperature and humidity of each collection point and sends them to the distribution analysis unit;

[0012] The distribution analysis unit analyzes multiple collection points in the granary to obtain the temperature step in the granary, and divides the temperature area according to the temperature step in the granary space according to the temperature ladder to obtain the high temperature area. The distribution analysis unit also obtains the humidity step in the granary, divides the humidity in the granary into humidity areas according to the humidity step and the humidity ladder to obtain the high humidity area.

[0013] The feedback control unit performs projection analysis according to the high temperature area and the high humidity area, generates an air intake line, and generates a ventilation control signal according to the air intake line to control the ventilation work in the granary;

[0014] During the execution of the ventilation control signal, the diffusion monitoring unit collects the nitrogen concentration in the granary, and obtains the diffusion signal and the air intake verification signal of the granary based on the nitrogen concentration analysis. The diffusion signal includes a slow diffusion signal and a normal diffusion signal, and the air intake verification signal includes an air intake failure signal and an air intake success signal.

[0015] As a preferred embodiment of the present invention, the step of obtaining the high temperature area by the distribution analysis unit is:

[0016] S1: After the distribution analysis unit obtains the location of the collection point and the temperature and humidity corresponding to each collection point, it draws a 3D model of the space inside the granary and marks all the collection points in the 3D model according to the location of the collection point;

[0017] S2: The distribution analysis unit collects statistics on the temperature and humidity at all the collection points, selects the maximum temperature and the minimum temperature at all the collection points, calculates the difference, records it as the temperature span TK, and generates the temperature step TB through formula analysis;

[0018] S3: After the distribution analysis unit obtains the temperature step, it takes the minimum temperature value among all the collection points as the starting point, sets up a temperature ladder every temperature step, classifies the temperatures of all the collection points into different temperature ladders, and connects the temperature collection points belonging to the same temperature ladder and records them as a temperature area;

[0019] S4: The distribution analysis unit compares the maximum temperature in the temperature step with the temperature threshold. If the maximum temperature in the temperature step is greater than the temperature threshold, the temperature region is recorded as a high temperature region.

[0020] As a preferred embodiment of the present invention, the step of obtaining the humidity area by the distribution analysis unit is:

[0021] A1: The distribution analysis unit repeats step S1, and calculates the difference between the maximum humidity value and the minimum humidity value in all the collection points to obtain the humidity span RK, and generates the humidity step RB through formula analysis;

[0022] A2: The distribution analysis unit takes the minimum humidity value among all the collection points as the starting point, sets up a humidity ladder every humidity step, classifies the humidity of all the collection points into different humidity ladders, connects the collection points in the same humidity ladder, and records them as humidity areas;

[0023] A3: The distribution analysis unit compares the humidity threshold with the maximum point in the humidity step RB. If the humidity is less than or equal to the maximum value in the humidity step, it is recorded as a high humidity area.

[0024] As a preferred embodiment of the present invention, the distribution analysis unit sends the high temperature area and the high humidity area to the feedback control unit. After obtaining the high temperature area and the high humidity area, the feedback control unit generates a high temperature warning and a high humidity warning accordingly. The feedback control unit projects the high temperature warning area or the high humidity warning area onto the air intake grille in the vertical direction, and records the projected area as the area to be regulated. The feedback control unit connects any two points on the boundary line of the area to be regulated through a line segment, selects the longest line segment, records it as the air intake line, and generates a ventilation control signal.

[0025] As a preferred embodiment of the present invention, the diffusion monitoring unit obtains the ventilation control signal through the feedback control unit, and immediately collects the nitrogen concentration at each collection point inside the granary, and records the collected nitrogen concentration as the basic nitrogen concentration. During the ventilation control signal process, the nitrogen concentration of each collection point is collected at a preset interval and recorded as the variable nitrogen concentration. After the ventilation control signal ends, the nitrogen concentration of each collection point is collected again and recorded as the end nitrogen concentration.

[0026] As a preferred embodiment of the present invention, the diffusion monitoring unit compares the basic nitrogen concentration with the preset nitrogen concentration, and generates an insufficient concentration signal if the basic nitrogen concentration is less than the preset nitrogen concentration, and does not respond if the basic nitrogen concentration is greater than the preset nitrogen concentration;

[0027] The diffusion monitoring unit selects a collection point for generating an insufficient concentration signal, compares a plurality of continuously changing nitrogen concentrations with a preset nitrogen concentration in sequence, generates a concentration improvement signal when the nitrogen concentration exceeds the preset nitrogen concentration for the first time, and calculates a time interval between generating the insufficient concentration signal and generating the concentration improvement signal, and records it as the concentration improvement time;

[0028] The diffusion monitoring unit compares the final nitrogen concentration of all collection points with the preset nitrogen concentration. If the final nitrogen concentration is less than the preset nitrogen concentration, an intake failure signal is generated. If the final nitrogen concentration is greater than or equal to the preset nitrogen concentration, an intake success signal is generated.

[0029] As a preferred embodiment of the present invention, the diffusion supervision unit records the concentration improvement time as Si, i=1, 2, 3..., n, the diffusion supervision unit records the distance of each collection point from the air guide grid as Li, the diffusion supervision unit generates a concentration improvement time mean S0 through a formula, the diffusion supervision unit compares the concentration improvement time mean S0, if the concentration improvement time mean S0 is greater than a preset time value, a slow diffusion signal is generated, if the concentration improvement time mean S0 is less than the preset time value, a normal diffusion signal is generated, and the slow diffusion signal or the normal diffusion signal is sent to the feedback control unit;

[0030] The feedback control unit increases the intake pressure in the intake pipe after receiving the slow diffusion signal. The feedback control unit maintains the intake pressure of the intake pipe unchanged after receiving the normal diffusion signal. Each time the feedback control unit increases the intake pressure of the intake pipe, it increases it step by step at a preset intake pressure level. When the intake pressure level reaches the highest level, if the slow diffusion signal is received, an alarm is generated.

[0031] After generating the intake failure signal, the diffusion monitoring unit sends the intake failure signal to the feedback control unit. After receiving the intake failure signal, the feedback control unit increases the intake pressure in the intake pipeline and generates the ventilation control signal again.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] 1. In the present invention, when monitoring the granary, multiple monitoring points are set inside the granary, and gradient analysis and regional division are performed according to the monitoring results of the multiple monitoring points, so as to accurately locate the abnormal areas in the granary where the environmental control is unbalanced or the storage environment does not meet the standards, and then the abnormal areas in the granary are adjusted in a targeted manner, which not only ensures the adjustment effect but also reduces the energy consumed by the adjustment, so that the grain storage environment meets the standards while ensuring the economic operation of the control equipment.

[0034] 2. In the present invention, when the granary is regulated, the air intake area is reduced by the movable, rotatable and telescopically adjustable air guide grille, so that the air intake at the bottom of the granary is targeted, and since the air intake area is reduced, the air intake pressure is increased, which improves the penetration of the granary during ventilation, and can have a good ventilation effect in the deep part of the granary. At the same time, according to the regional gradient division in the granary, the position of the air guide grille is intelligently controlled to ensure the position accuracy of ventilation regulation.

[0035] 3. In the present invention, while the grain silo control is in progress, the control effect of the grain silo is monitored to obtain the diffusion penetration effect when the grain silo is ventilated at different depths and positions, and the grain silo control is feedback-adjusted according to the obtained diffusion penetration effect, thereby ensuring that the ventilation effect of the grain silo can meet the expected standard. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0037] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0038] Figure 2 is a system block diagram of the present invention;

[0039] Figure 3 is a system block diagram of the present invention;

[0040] Figure 4 is a system block diagram of the present invention;

[0041] Figure 5 It is a system flow chart of the present invention.

[0042] In the figure: 1. air intake funnel; 2. air intake grille; 3. air intake pipeline; 4. folding rod; 5. air guide grille; 6. telescopic grille; 7. pulley; 8. air collecting funnel; 9. air guide pipe; 10. coupling; 11. air guide hole; 12. positioning ring. DETAILED DESCRIPTION

[0043] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] Embodiment 1:

[0045] See also Figure 1 - Figure 5 As shown, the grain storage control equipment based on grain condition monitoring includes an air intake funnel 1, an air intake pipeline 3 is connected to the lower part of the air intake funnel 1, a positioning ring 12 is fixedly installed on the top of the air intake funnel 1, and an air intake grille 2 is fixedly installed on the top of the positioning ring 12;

[0046] The inner wall of the air intake funnel 1 is movably connected with a folding rod 4 through an axle seat. The folding rod 4 includes at least two groups of foldable straight rods. An air guide pipe 9 is fixedly installed at the movable end of the folding rod 4. A coupling 10 is installed in the middle of the air guide pipe 9. The coupling 10 divides the air guide pipe 9 into two sections, so that the upper section of the air guide pipe 9 can rotate relative to the lower section. An air guide grid 5 is fixedly installed on the top of the upper section of the air guide pipe 9. The bottom end of the air guide pipe 9 is fixedly connected with an air collecting funnel 8. The air collecting funnel 8 is made of rubber or other flexible materials. A control module is installed inside the folding rod 4. The control module can control the extension and retraction of the folding rod 4, the rotation of the coupling 10, and the air intake of the air intake pipeline 3;

[0047] An air guide hole 11 is provided at the position where the air guide grille 5 is connected to the air guide pipe 9. The air guide hole 11 can guide the gas in the air guide pipe 9 to the top of the air guide grille 5. A group of telescopic grilles 6 are respectively sleeved at both ends of the air guide grille 5. The outer ends of the two groups of telescopic grilles 6 are movably connected to pulleys 7. The pulleys 7 slide on the inside of the positioning ring 12. The upper surfaces of the air guide grille 5 and the telescopic grille 6 are in contact with the air intake grille 2.

[0048] Embodiment 2:

[0049] See also Figure 1 - Figure 5As shown, the control module is provided with a granary monitoring unit, a distribution analysis unit, a feedback control unit and a diffusion monitoring unit. The granary monitoring unit can collect the temperature and humidity information in the granary. During the collection, a plurality of evenly distributed collection points are set in the granary for collection, so as to obtain the temperature and humidity of each collection point. The granary monitoring unit packages the position of each collection point and the temperature and humidity of each collection point and sends them to the distribution analysis unit;

[0050] After the distribution analysis unit obtains the location of the collection point and the temperature and humidity corresponding to each collection point, it draws a 3D model of the space inside the granary and marks all the collection points in the 3D model according to their locations. The distribution analysis unit counts the temperature and humidity at all the collection points. The distribution analysis unit selects the maximum and minimum temperature values ​​of all the collection points for difference calculation and records them as the temperature span TK. The temperature step TB is generated through formula analysis. Wherein TK0 is a preset conventional temperature span, X is a preset initial temperature step, after the distribution analysis unit obtains the temperature step, it takes the minimum temperature value among all the collection points as the starting point, sets up a temperature ladder every temperature step, classifies the temperatures of all the collection points into different temperature ladders, and connects the temperature collection points belonging to the same temperature ladder, and records them as a temperature region, the distribution analysis unit obtains a preset temperature threshold, compares the maximum temperature in the temperature ladder with the temperature threshold, if the maximum temperature in the temperature ladder is less than or equal to the temperature threshold, then the temperature region is recorded as a qualified region, if the maximum temperature in the temperature ladder is greater than the temperature threshold, then the temperature region is recorded as a high temperature region;

[0051] The distribution analysis unit calculates the difference between the maximum and minimum humidity values ​​in all the collection points to obtain the humidity span RK, and at the same time obtains the conventional humidity span RK0 and the preset initial humidity step Y, and generates the humidity step RB through formula analysis. The distribution analysis unit takes the minimum humidity value of all the collection points as the starting point, sets up a humidity ladder every humidity step, classifies the humidity of all the collection points into different humidity ladders, connects the collection points in the same humidity ladder, and records them as humidity areas. The distribution analysis unit compares the humidity threshold with the maximum point in the humidity step RB. If the humidity threshold is greater than the maximum humidity value in the humidity ladder, it is recorded as a qualified area. If the humidity is less than or equal to the maximum humidity value in the humidity ladder, it is recorded as a high humidity area.

[0052] The distribution analysis unit sends the high temperature area and the high humidity area to the feedback control unit. After acquiring the high temperature area and the high humidity area, the feedback control unit generates a high temperature warning and a high humidity warning accordingly. The feedback control unit projects the high temperature warning area or the high humidity warning area onto the air intake grille 2 in the vertical direction, and records the area where the projection is located as the area to be regulated. The feedback control unit connects any two points on the boundary line of the area to be regulated through a line segment, selects the longest line segment, records it as the air intake line, and generates a ventilation control signal. The ventilation control signal includes the ventilation time, the air intake line position, and the air intake pressure.

[0053] The feedback control unit controls the folding rod 4 to extend and retract according to the ventilation control signal, and controls the coupling 10 to rotate, so that the center line of the air guide grid 5 coincides with the air intake line, and controls the air intake pipeline 3 to intake air. The gas enters the bottom of the air collecting funnel 8 through the air intake pipeline 3, flows out of the air guide grid 5 through the air guide pipe 9, and passes upward through the air intake grid 2 to ventilate the interior of the granary, wherein the gas entering the air intake pipeline 3 is nitrogen.

[0054] Embodiment three:

[0055] See also Figure 1 - Figure 5 As shown, the diffusion monitoring unit obtains the ventilation control signal through the feedback control unit, and immediately collects the nitrogen concentration at each collection point inside the granary, and records the collected nitrogen concentration as the basic nitrogen concentration. During the ventilation control signal, the nitrogen concentration of each collection point is collected at a preset interval and recorded as the variable nitrogen concentration. After the ventilation control signal ends, the nitrogen concentration of each collection point is collected again and recorded as the end nitrogen concentration.

[0056] The diffusion monitoring unit compares the basic nitrogen concentration with the preset nitrogen concentration. If the basic nitrogen concentration is less than the preset nitrogen concentration, an insufficient concentration signal is generated. If the basic nitrogen concentration is greater than the preset nitrogen concentration, no response is made.

[0057] The diffusion monitoring unit selects a collection point for generating an insufficient concentration signal, compares a plurality of continuously changing nitrogen concentrations with a preset nitrogen concentration in sequence, generates a concentration improvement signal when the nitrogen concentration exceeds the preset nitrogen concentration for the first time, and calculates the time interval between generating the insufficient concentration signal and generating the concentration improvement signal, which is recorded as the concentration improvement time;

[0058] The diffusion monitoring unit compares the final nitrogen concentration of all collection points with the preset nitrogen concentration. If the final nitrogen concentration is less than the preset nitrogen concentration, an intake failure signal is generated. If the final nitrogen concentration is greater than or equal to the preset nitrogen concentration, an intake success signal is generated to complete the intake work.

[0059] The diffusion supervision unit records the concentration improvement time as Si, i=1, 2, 3…, n. The diffusion supervision unit records the distance from each collection point to the air guide grid 5 as Li. The diffusion supervision unit generates the concentration improvement time mean S0 through the formula, The diffusion monitoring unit compares the concentration improvement time mean S0, and if the concentration improvement time mean S0 is greater than the preset time value, a diffusion slow signal is generated; if the concentration improvement time mean S0 is less than the preset time value, a diffusion normal signal is generated, and the diffusion slow signal or the diffusion normal signal is sent to the feedback control unit;

[0060] After receiving the slow diffusion signal, the feedback control unit increases the intake pressure in the intake pipe 3. After receiving the normal diffusion signal, the feedback control unit maintains the intake pressure of the intake pipe 3 unchanged. Each time the feedback control unit increases the intake pressure of the intake pipe 3, it gradually increases it at a preset intake pressure level. When the intake pressure level reaches the highest level, if a slow diffusion signal is received, an alarm reminder is generated and sent to the management personnel for the management personnel to view.

[0061] After generating the intake failure signal, the diffusion monitoring unit sends the intake failure signal to the feedback control unit. After receiving the intake failure signal, the feedback control unit increases the intake pressure in the intake pipe 3 and generates the ventilation control signal again. At the same time, the feedback control unit sends the intake failure signal to the management personnel through the network so that the management personnel can check the intake equipment.

[0062] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. Grain storage and control equipment based on grain condition monitoring, characterized in that: It comprises an air intake funnel (1), the lower part of the air intake funnel (1) is connected to an air intake pipeline (3), a positioning ring (12) is fixedly installed on the top of the air intake funnel (1), and an air intake grille (2) is fixedly installed on the top of the positioning ring (12); The inner wall of the air inlet funnel (1) is movably connected to a folding rod (4) via an axle seat, an air guide pipe (9) is fixedly installed at the movable end of the folding rod (4), a coupling (10) is installed in the middle of the air guide pipe (9), the coupling (10) divides the air guide pipe (9) into two sections, so that the upper section of the air guide pipe (9) can rotate relative to the lower section, an air guide grid (5) is fixedly installed on the top of the upper section of the air guide pipe (9), a gas collecting funnel (8) is fixedly connected to the bottom end of the air guide pipe (9), and a control module is installed inside the folding rod (4); An air guide hole (11) is provided at a position where the air guide grid (5) is connected to the air guide pipe (9), and the air guide hole (11) can guide the gas in the air guide pipe (9) to the top of the air guide grid (5). A group of telescopic grids (6) are respectively sleeved at both ends of the air guide grid (5), and the outer ends of the two groups of telescopic grids (6) are movably connected to pulleys (7), and the pulleys (7) slide on the inside of the positioning ring (12), and the upper surfaces of the air guide grid (5) and the telescopic grid (6) are in contact with the air intake grid (2).

2. The grain storage control equipment based on grain condition monitoring according to claim 1 is characterized in that: The control module is provided with a granary monitoring unit, a distribution analysis unit, a feedback control unit and a diffusion monitoring unit; The granary monitoring unit sets a plurality of evenly distributed collection points in the granary to collect temperature and humidity information in the granary, obtains the temperature and humidity of each collection point, and packages the position of each collection point and the temperature and humidity of each collection point and sends them to the distribution analysis unit; The distribution analysis unit analyzes multiple collection points in the granary to obtain the temperature step in the granary, and divides the temperature area according to the temperature step in the granary space according to the temperature ladder to obtain the high temperature area. The distribution analysis unit also obtains the humidity step in the granary, divides the humidity in the granary into humidity areas according to the humidity step and the humidity ladder to obtain the high humidity area. The feedback control unit performs projection analysis based on the high temperature area and the high humidity area to generate an air intake line, and generates a ventilation control signal based on the air intake line to control the ventilation work in the granary; During the execution of the ventilation control signal, the diffusion monitoring unit collects the nitrogen concentration in the granary, and obtains the diffusion signal and the air intake verification signal of the granary based on the nitrogen concentration analysis. The diffusion signal includes a slow diffusion signal and a normal diffusion signal, and the air intake verification signal includes an air intake failure signal and an air intake success signal.

3. The grain storage control equipment based on grain condition monitoring according to claim 2 is characterized in that: The steps of obtaining the high temperature area by the distribution analysis unit are as follows: S1: After the distribution analysis unit obtains the location of the collection point and the temperature and humidity corresponding to each collection point, it draws a 3D model of the space inside the granary and marks all the collection points in the 3D model according to the location of the collection point; S2: The distribution analysis unit collects statistics on the temperature and humidity at all the collection points, selects the maximum temperature and the minimum temperature at all the collection points, calculates the difference, records it as the temperature span TK, and generates the temperature step TB through formula analysis; S3: After the distribution analysis unit obtains the temperature step, it takes the minimum temperature value among all the collection points as the starting point, sets up a temperature ladder every temperature step, classifies the temperatures of all the collection points into different temperature ladders, and connects the temperature collection points belonging to the same temperature ladder and records them as a temperature area; S4: The distribution analysis unit compares the maximum temperature in the temperature step with the temperature threshold. If the maximum temperature in the temperature step is greater than the temperature threshold, the temperature region is recorded as a high temperature region.

4. The grain storage control equipment based on grain condition monitoring according to claim 3 is characterized in that: The steps of obtaining the humidity area by the distribution analysis unit are as follows: A1: The distribution analysis unit repeats step S1, and calculates the difference between the maximum humidity value and the minimum humidity value in all the collection points to obtain the humidity span RK, and generates the humidity step RB through formula analysis; A2: The distribution analysis unit takes the minimum humidity value among all the collection points as the starting point, sets up a humidity ladder every humidity step, classifies the humidity of all the collection points into different humidity ladders, connects the collection points in the same humidity ladder, and records them as humidity areas; A3: The distribution analysis unit compares the humidity threshold with the maximum point in the humidity step RB. If the humidity is less than or equal to the maximum value in the humidity step, it is recorded as a high humidity area.

5. The grain storage control equipment based on grain condition monitoring according to claim 2 is characterized in that: The distribution analysis unit sends the high temperature area and the high humidity area to the feedback control unit. After acquiring the high temperature area and the high humidity area, the feedback control unit generates a high temperature warning and a high humidity warning accordingly. The feedback control unit projects the high temperature warning area or the high humidity warning area onto the air intake grille (2) in the vertical direction, and records the area where the projection is located as the area to be regulated. The feedback control unit connects any two points on the boundary line of the area to be regulated through a line segment, selects the longest line segment, records it as the air intake line, and generates a ventilation control signal.

6. The grain storage control equipment based on grain condition monitoring according to claim 1 is characterized in that: The diffusion monitoring unit obtains the ventilation control signal through the feedback control unit, and immediately collects the nitrogen concentration at each collection point inside the granary, and records the collected nitrogen concentration as the basic nitrogen concentration. During the ventilation control signal process, the nitrogen concentration of each collection point is collected at a preset interval and recorded as the variable nitrogen concentration. After the ventilation control signal ends, the nitrogen concentration of each collection point is collected again and recorded as the end nitrogen concentration.

7. The grain storage control equipment based on grain condition monitoring according to claim 6 is characterized in that: The diffusion monitoring unit compares the basic nitrogen concentration with the preset nitrogen concentration, and generates an insufficient concentration signal if the basic nitrogen concentration is less than the preset nitrogen concentration, and does not respond if the basic nitrogen concentration is greater than the preset nitrogen concentration; The diffusion monitoring unit selects a collection point for generating an insufficient concentration signal, compares a plurality of continuously changing nitrogen concentrations with a preset nitrogen concentration in sequence, generates a concentration improvement signal when the nitrogen concentration exceeds the preset nitrogen concentration for the first time, and calculates a time interval between generating the insufficient concentration signal and generating the concentration improvement signal, and records it as the concentration improvement time; The diffusion monitoring unit compares the final nitrogen concentration of all collection points with the preset nitrogen concentration. If the final nitrogen concentration is less than the preset nitrogen concentration, an intake failure signal is generated. If the final nitrogen concentration is greater than or equal to the preset nitrogen concentration, an intake success signal is generated.

8. The grain storage control equipment based on grain condition monitoring according to claim 1 is characterized in that: The diffusion supervision unit records the concentration improvement time as Si, i=1, 2, 3..., n, and the diffusion supervision unit records the distance between each collection point and the air guide grid (5) as Li. The diffusion supervision unit generates a concentration improvement time mean S0 through a formula. The diffusion supervision unit compares the concentration improvement time mean S0. If the concentration improvement time mean S0 is greater than a preset time value, a slow diffusion signal is generated. If the concentration improvement time mean S0 is less than the preset time value, a normal diffusion signal is generated, and the slow diffusion signal or the normal diffusion signal is sent to the feedback control unit. The feedback control unit increases the intake pressure in the intake pipeline (3) after receiving the slow diffusion signal, and maintains the intake pressure of the intake pipeline (3) unchanged after receiving the normal diffusion signal. Each time the feedback control unit increases the intake pressure of the intake pipeline (3), it gradually increases it at a preset intake pressure level. When the intake pressure level reaches the highest level, if the slow diffusion signal is received, an alarm is generated; After generating the intake failure signal, the diffusion monitoring unit sends the intake failure signal to the feedback control unit. After receiving the intake failure signal, the feedback control unit increases the intake pressure in the intake pipeline (3) and generates the ventilation control signal again.

Images