A general-purpose grain dryer operating capacity on-line metering system and method

Abstract

The application discloses a kind of general grain dryer operating capacity on-line metering system and method, including grain discharge mechanism workload measurement module, moisture measurement module, image monitoring module, operating capacity metering terminal: grain discharge mechanism workload measurement module is composed of magneto electric type speed sensor and speed measuring gear, speed measuring gear is installed in grain dryer grain discharge mechanism drive shaft, magneto electric type speed sensor is installed in the side of speed measuring gear, after drying in the process of grain discharge operation, the rotational speed measurement of grain discharge mechanism driving gear, moisture measurement module is installed on dryer, after drying in the process of grain dryer grain discharge operation, grain moisture on-line real-time detection is carried out, and moisture measurement module data transmission line is connected with operating capacity metering terminal;Image monitoring module is installed at the place of grain dryer grain discharge, and is connected with operating capacity metering terminal;Operating capacity metering terminal calculates the operating capacity of dryer according to the data of grain discharge mechanism workload measurement module, moisture measurement module, image monitoring module.

Description

Technical Field

[0001] The present invention relates to the field of online monitoring of grain dryer operation information, and in particular to a universal grain dryer operation volume online metering system and method. Background Art

[0002] Grain drying at the production site is a crucial step and key measure for ensuring grain quality, reducing post-harvest and post-disaster losses, and ensuring a bountiful harvest. There is an urgent need to accelerate the integration of information technology with drying and grain storage facilities and equipment, improve the intelligence level of drying facilities and equipment, and promote technologies such as automatic metering of grain drying operations, online moisture measurement, and information-based monitoring of dryer operation and stored grain conditions. This will enable online perception of operational service information, precise production control, and efficient operation and maintenance management.

[0003] The agricultural machinery purchase and application subsidy system has been implemented in my country for many years. The calculation and subsidy distribution for activities such as field plant protection and deep tillage have been increasingly refined. However, the lack and inadequacy of online measurement systems and methods for grain drying workloads have made it difficult to timely monitor and control grain dryer workloads, hindering the accurate calculation and distribution of subsidies for grain drying workloads. Existing grain drying equipment lacks an online measurement system for drying workloads, making it impossible to accurately measure workloads online. Instead, it typically relies on pre- or post-drying weighing, making data authenticity difficult to guarantee. Furthermore, the cost of separately measuring drying workloads with belt scales or flowmeters is high, and the data authenticity is susceptible to tampering, making widespread adoption difficult.

[0004] The invention patent with application number 202110543942.4 relates to an embedded weighing system for real-time detection of the weight of grain in the dryer, the invention patent with application number 202110720968.1 discloses a remote monitoring method for batch grain drying operation, the invention patent with application number 202211403631.9 discloses a remote network drying yield measurement information system and yield measurement method, and the invention patent with application number CN202311766645.1 discloses a remote network operation and quality monitoring system and method for continuous dryers. However, whether it involves batch cycle grain dryers or continuous grain dryers, there are the following problems: (1) Lack of versatility, only supporting specific types of dryers, and not considering the versatility of different types of grain discharge mechanisms; (2) Not fully considering the difference in grain moisture content and bulk density, the accuracy of the operation measurement method needs to be improved, making it difficult to convert the standard moisture content, and thus difficult to calculate the subsidy according to the drying moisture difference. Summary of the Invention

[0005] The technical problem to be solved by the present application is to overcome the defects of the current drying machine operation quantity measurement system and method, such as insufficient universality and low measurement accuracy, and to provide a universal drying machine operation quantity online measurement system and method.

[0006] To achieve the above-mentioned object, the technical scheme adopted by the present application is as follows:

[0007] In the first aspect, the present application provides a universal drying machine operation quantity online measurement system, which comprises a grain discharge mechanism work measurement module, a moisture measurement module, an image monitoring module and an operation quantity measurement terminal.

[0008] The grain discharge mechanism work measurement module is composed of a magneto electric type speed sensor and a speed measuring gear, the speed measuring gear is installed on the grain discharge mechanism drive shaft of the grain dryer, and the magneto electric type speed sensor is installed on the side of the speed measuring gear. The speed of the grain discharge mechanism drive gear is measured during the drying and grain discharge operation, and the output lead of the magneto sensor is connected to the operation quantity measurement terminal.

[0009] The moisture measurement module is installed on the dryer, and the moisture of the dried grain is detected online and in real time during the grain discharge operation of the grain dryer. The data transmission line of the moisture measurement module is connected to the operation quantity measurement terminal.

[0010] The image monitoring module is installed at the grain discharge place of the dryer and is composed of an image sensor and an edge intelligent processor. The image sensor transmits the image of the dried grain to the edge intelligent processor, which analyzes the type, size and quality of the dried grain visually. The edge intelligent processor is connected to the operation quantity measurement terminal.

[0011] As a further technical scheme, the operation measurement terminal is installed on the dryer and is composed of a data acquisition and processing module, a man-machine interaction module connected thereto, a 4G communication module and a Beidou positioning module. The data acquisition and processing module receives the data transmitted by the grain discharge mechanism work measurement module, the moisture measurement module and the image monitoring module and calculates the drying operation quantity. At the same time, the data acquisition and processing module is connected to the dryer control system and can receive the grain discharge operation start signal of the dryer. The Beidou positioning module transmits the position information of the dryer to the data acquisition and processing module. The man-machine interaction module can display the raw data collected by the data acquisition and processing module and the operation quantity data obtained after operation processing. The 4G communication module transmits the raw data, operation quantity data and position information of the dryer collected by the data acquisition and processing module to the cloud work platform.

[0012] As a further technical scheme, when the grain dryer is a continuous grain dryer, the speed measuring gear is installed on the drive shaft of the continuous grain dryer grain discharge impeller, and the magneto electric type speed sensor is installed on the side of the speed measuring gear.

[0013] As a further technical solution, the moisture measurement module is installed at the bottom of the continuous dryer.

[0014] As a further technical solution, the image monitoring module is installed at the bottom of the continuous dryer.

[0015] As a further technical solution, when the dryer is a batch-type circulating dryer, the speed measuring gear is installed on the drive shaft of the bucket elevator of the batch-type circulating grain dryer, and the magneto-type rotational speed sensor is installed outside the speed measuring gear.

[0016] As a further technical solution, the moisture measurement module is installed at the bottom of the batch-type circulating grain dryer.

[0017] As a further technical solution, the image monitoring module is installed at the top of the batch-type circulating dryer.

[0018] As a further technical solution, when the dryer is a mobile grain dryer with a spiral auger grain discharge mechanism, the speed measuring gear is installed on the vertically placed drive shaft of the spiral auger in the middle of the dryer; the magneto-type rotational speed sensor is installed outside the speed measuring gear; the moisture measurement module is installed at the bottom of the mobile grain dryer; and the image monitoring module is installed at the top of the mobile grain dryer.

[0019] In a second aspect, to achieve the above object, the application further provides a general-purpose dryer operation amount online metering method, which comprises the following steps:

[0020] 1) The operation amount metering terminal is initialized to perform self-checking on each connected module, after the self-checking is completed, the geographic position information of the Beidou positioning module is read;

[0021] 2) The operation metering terminal waits for the grain discharge operation start signal of the dryer control system, after the operation metering terminal receives the grain discharge operation start signal, the operation metering terminal reads the grain discharge mechanism work measurement data, the moisture data of the dried grain, and the image data of the dried grain in real time, and performs cumulative calculation of the drying operation amount L;

[0022]

[0023] Wherein L is the drying operation amount, the unit is kg, which is an integral quantity in the drying time period T after the drying of the dryer, the unit is s, z t is the grain discharge mechanism work at time t, that is, the rotational speed of the grain discharge mechanism drive shaft at time t, the unit is r / s; p is the grain discharge volume under the unit rotational speed of the grain discharge mechanism drive shaft, p is a constant, which is only related to the fixed dryer and the grain discharge mechanism, the unit is L / r; w tis the bulk density correction coefficient at time t, used for bulk density correction, related to grain type, grain seed volume and mass, with a unit of kg / L; m t is the moisture content correction coefficient, used for correction of drying operation amount under standard moisture content, unified measurement standard, related to the moisture content of grain at time t, dimensionless.

[0024] z t measured by the discharge mechanism work measurement module in real time, m t measured by the moisture measurement module in real time, w t measured by the image intelligent monitoring module in real time by collecting and analyzing grain particle group images in the discharge operation process.

[0025] At the same time, the operation measurement terminal transmits the raw data collected by the data acquisition and processing module and the operation amount data obtained after operation processing to the man-machine interaction module for display, and transmits the raw data collected by the data acquisition and processing module, the operation amount data and the dryer position information to the cloud work platform through the 4G communication module.

[0026] 3) The data acquisition and processing module in the operation measurement terminal judges whether the discharge operation is ended by analyzing the discharge port image transmitted by the image monitoring module, and transmits the discharge operation ending signal to the dryer control system through the RS485 signal line.

[0027] The grain dryer operation amount remote online monitoring system and method according to the present application has the following beneficial effects:

[0028] 1. The discharge mechanism work measurement module of the present application is composed of a magneto-electric speed sensor and a speed measuring gear, therefore, the magneto-electric speed sensor and the speed measuring gear can be installed at different positions of different types of dryers as needed, therefore, the system has strong versatility. It is suitable for various types of dryers using gear-driven discharge mechanisms, including but not limited to bucket elevator discharge, impeller discharge, swing discharge, including but not limited to batch-type circulating dryers and continuous dryers;

[0029] 2. The present application installs a moisture measurement module on the dryer, which detects the moisture of the dried grain in real time during the discharge operation of the grain dryer, and at the same time, the image monitoring module visually analyzes the grain type, grain size and mass after drying; improves the accuracy of drying operation amount calculation, that is, the operation amount calculation considers the grain type, bulk density and moisture change, the measurement result is accurate, and the actual operation of the dryer can be effectively measured

[0030] 3. The whole structure of the present application is simple, and the installation or modification is low in difficulty. The system can be directly installed on the discharge driving gear housing of the dryer, without the need of a large amount of structural modification of the dryer, and the modification and installation are fast, and have a small influence on the production and operation activities of the warehouse enterprise. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a schematic diagram of the connection mode of the grain drying operation amount measurement system of the present application and the continuous grain dryer with the impeller discharge mechanism.

[0032] Figure 2 is a schematic diagram of the connection mode of the grain drying operation amount measurement system of the present application and the batch circulating grain dryer with the bucket elevator discharge mechanism.

[0033] Figure 3 is a schematic diagram of the connection mode of the grain drying operation amount measurement system of the present application and the mobile grain dryer with the spiral auger discharge mechanism.

[0034] Figure 4 is a block diagram of the grain drying operation amount measurement system.

[0035] Figure 5 is a program running block diagram of the grain drying operation amount measurement system.

[0036] wherein 1 is an operation amount measurement terminal, 2 is a moisture measurement module, 3 is a magneto-electric speed sensor, 4 is a speed measuring gear, 5 is an image monitoring module, 6 is an impeller discharge mechanism driving shaft, 7 is a grain conveying belt, 8 is an impeller, 9 is a continuous grain dryer with an impeller discharge mechanism, 10 is a bucket elevator driving shaft, 11 is a bucket elevator bucket, 12 is a discharge chute, 13 is a batch circulating grain dryer with a bucket elevator discharge mechanism, 14 is a spiral auger, 15 is a spiral auger driving shaft, 16 is a discharge pipe, 17 is a mobile grain dryer with a spiral auger discharge mechanism, 18 is a 4G communication module, 19 is a man-machine interaction module, 20 is a Beidou positioning module, 21 is a data acquisition and processing module, 22 is a discharge mechanism work measurement module, 23 is an image sensor, 24 is an edge intelligent processor, and 25 is a dryer control system. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical scheme and advantages of the present application more clear and explicit, the present application is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application, and are not used to limit the present application.

[0038] As Figure 1As shown in the figure, the universal grain dryer operation amount online metering system provided by the present application comprises a grain discharging mechanism work amount measuring module 22, a moisture measuring module 2, an image monitoring module 5, and an operation amount metering terminal 1, wherein the operation amount metering terminal 1 is composed of a data acquisition and processing module 21, a man-machine interaction module 19, a 4G communication module 18, and a Beidou positioning module 20.

[0039] The grain discharging mechanism work amount measuring module 22 is composed of a magneto-electric speed sensor 3 and a speed measuring gear 4. The speed measuring gear is installed on the grain discharging mechanism driving shaft of the grain dryer, and the magneto-electric speed sensor is installed on the side of the speed measuring gear. The speed of the driving gear of the grain discharging mechanism after drying during the grain discharging operation is measured. The output lead of the magneto-electric sensor 3 is connected with the input end of the data acquisition and processing module 21 in the operation amount metering terminal 1.

[0040] The moisture measuring module 2 is installed on the grain dryer, and the moisture of the grain after drying during the grain discharging operation of the grain dryer is detected online and in real time. The data transmission line of the moisture measuring module 2 is connected with the input end of the data acquisition and processing module 21 in the operation amount metering terminal 1.

[0041] The image monitoring module 5 is installed at the grain discharging position of the grain dryer and is composed of an image sensor 23 and an edge intelligent processor 24. The image sensor transmits the image of the grain after drying to the edge intelligent processor, which visually analyzes the type, size, and quality of the grain after drying. The data transmission line of the edge intelligent processor is connected with the input end of the data acquisition and processing module in the operation amount metering terminal, and transmits the type data of the grain and the bulk density correction coefficient data to the data acquisition and processing module.

[0042] The operation amount metering terminal is installed on the grain dryer and is composed of a data acquisition and processing module and a man-machine interaction module, a 4G communication module, and a Beidou positioning module connected therewith. The data acquisition and processing module receives the data transmitted by the grain discharging mechanism work amount measuring module, the moisture measuring module, and the image monitoring module and calculates the drying operation amount. Meanwhile, the data acquisition and processing module is connected with the grain dryer control system through an RS485 communication line and can receive the grain discharging operation start signal of the grain dryer. The Beidou positioning module transmits the position information of the grain dryer to the data acquisition and processing module. The man-machine interaction module can display the original data collected by the data acquisition and processing module and the operation amount data obtained after operation processing. The 4G communication module can transmit the original data, the operation amount data, and the position information of the grain dryer collected by the data acquisition and processing module to a cloud work platform.

[0043] As shown in the figure, Figure 2 The present embodiment based on the above system further provides a universal grain dryer operation amount online metering method, which comprises the following steps:

[0044] 1) The work quantity meter terminal 1 is initialized, each module connected is self-checked, after the self-checking is completed, the Beidou positioning module 20 geographic position information is read;

[0045] 2) The work meter terminal 1 waits for the grain discharging operation start signal of the dryer control system (25), when the work meter terminal receives the grain discharging operation start signal, the work quantity measurement data of the grain discharging mechanism, the grain moisture data after drying, and the image data after drying are read in real time, and the drying work quantity L is accumulated and calculated.

[0046]

[0047] Wherein L is the drying work quantity, the unit is kg, which is an integral quantity in the grain discharging time period T after drying, the unit is s, z t The t time grain discharging mechanism work quantity, that is, the t time grain discharging mechanism drive shaft rotating speed, the unit is r / s; p is the grain discharging volume under the unit grain discharging mechanism drive shaft rotating speed, p is a constant, which is only related to the fixed dryer and the grain discharging mechanism, the unit is L / r; w t The t time bulk density correction coefficient, which is used for bulk density correction, is related to the grain type, grain particle volume and mass, the unit is kg / L; m t The grain moisture content correction coefficient is used for the correction of the drying work quantity under the standard moisture content, the unified measurement standard, which is related to the grain moisture content at t time, dimensionless.

[0048] z t Measured by the grain discharging mechanism work quantity measurement module online in real time, m t Measured by the moisture measurement module 2 online in real time, w t The image intelligent monitoring module 5 collects and analyzes the grain particle group image in the grain discharging operation process to measure online in real time.

[0049] At the same time, the work meter terminal 1 transmits the original data collected by the data acquisition and processing module 21 and the work quantity data obtained after operation to the man-machine interaction module 19, which can realize display; and through the 4G communication module 18, the original data, work quantity data and dryer position information collected by the data acquisition and processing module 21 can be transmitted to the cloud work platform.

[0050] 3) The data acquisition and processing module 21 in the work meter terminal 1 judges whether the grain discharging operation is ended by analyzing the grain discharging port image transmitted by the image monitoring module 5, and transmits the grain discharging operation end signal to the dryer control system (25) through the RS485 signal line.

[0051] The installation positions of the speed measuring gear 4, the magneto electric rotating speed sensor 3, the moisture measurement module 2 and the image monitoring module 5 will be described below in combination with different types of dryers:

[0052] Embodiment 1

[0053] As shown in the figure, the application of a general-purpose grain dryer operation amount online metering system in a continuous grain dryer using an impeller to discharge grain. Figure 1 The continuous grain dryer using an impeller to discharge grain operates as follows: the impeller rotates to drive the dried grain to move downward, and the dried grain is discharged from the dryer and falls onto the grain conveying belt 7.

[0054] The speed measuring gear 4 is installed on the continuous dryer impeller drive shaft, and the magneto speed sensor 3 is installed on the outside of the speed measuring gear. During the grain discharge operation, the speed of the dried grain discharge impeller drive shaft 6 is measured, which is related to the speed of the impeller 8 discharging grain. The output lead of the magneto speed sensor is connected to the input end of the data acquisition and processing module 21 in the operation amount metering terminal 1.

[0055] The moisture measurement module 2 is installed at the bottom of the continuous dryer 9 where the grain is discharged. During the grain discharge operation of the grain dryer, the moisture of the dried grain is detected online and in real time. The data transmission line of the moisture measurement module 2 is connected to the input end of the data acquisition and processing module 21 in the operation amount metering terminal.

[0056] The image monitoring module 5 is installed at the bottom of the continuous dryer 9 where the grain is discharged. It is composed of an image sensor 23 and an edge intelligent processor 24. The image sensor 23 transmits the image of the dried grain on the grain conveying belt to the edge intelligent processor 24, which analyzes the type, size and quality of the dried grain visually. The data transmission line of the edge intelligent processor 24 is connected to the input end of the data acquisition and processing module 21 in the operation amount metering terminal 1, and the grain type data and bulk density correction coefficient data are transmitted to the data acquisition and processing module.

[0057] The operation metering terminal 1 is installed on the body of the continuous dryer 9 and is composed of a data acquisition and processing module 21, a man-machine interaction module 19 connected through a communication line, a 4G communication module 18 and a Beidou positioning module 20. The data acquisition and processing module 21 receives the data transmitted by the grain discharge mechanism work measurement module 22, the moisture measurement module 2 and the image monitoring module 5 and calculates the drying operation amount.

[0058] Embodiment 2

[0059] As shown in the figure, the application of a general-purpose grain dryer operation amount online metering system in a continuous grain dryer using an impeller to discharge grain.

[0060] Figure 2 As shown in the figure, the application of a general-purpose grain dryer operation amount online metering system in a continuous grain dryer using an impeller to discharge grain.

[0061] ​The grain discharging operation mode of the batch circulating grain dryer using a bucket elevator as the grain discharging mechanism is as follows: the bucket elevator still lifts the dried grain from the bottom to the top and discharges it from the grain discharge chute 12.

[0062] The speed measuring gear 4 is installed on the bucket elevator drive shaft 10 of the batch cycle grain dryer, and the magnetoelectric speed sensor 3 is installed on the outside of the speed measuring gear 4. The speed of the bucket elevator is measured after drying during the grain discharge operation. The speed is related to the speed at which the bucket 11 lifts the grain. The output lead of the magnetoelectric speed sensor 3 is connected to the input end of the data acquisition and processing module 21 in the workload metering terminal 1.

[0063] The moisture measurement module 2 is installed at the bottom outlet of the batch cycle grain dryer 13. The moisture content of the grain is detected online in real time after drying during the grain discharge operation of the grain dryer. The data transmission line of the moisture measurement module 2 is connected to the input end of the data acquisition and processing module in the workload metering terminal 1.

[0064] The image monitoring module 5 is installed at the grain discharge chute at the top of the batch circulation dryer 13 and consists of an image sensor 23 and an edge intelligent processor 24. The image sensor 23 transmits the image of the dried grain in the grain discharge chute 12 to the edge intelligent processor 24, which performs a visual analysis of the type of grain, grain grain size, and quality after drying. The data transmission line of the edge intelligent processor 24 is connected to the input end of the data acquisition and processing module 21 in the operation volume metering terminal 1, and transmits the grain type data and bulk density correction coefficient data to the data acquisition and processing module 21. The operation metering terminal 1 is installed on the fuselage of the batch circulation dryer 13 and consists of a data acquisition and processing module 21 and a human-computer interaction module 19, a 4G communication module 18, and a Beidou positioning module 20 connected thereto via communication lines. The data acquisition and processing module 21 receives data transmitted by the grain discharge mechanism workload measurement module 22, the moisture measurement module 2, and the image monitoring module 5, and calculates the drying workload.

[0065] Example 3

[0066] like Figure 3 As shown, the application of a universal grain dryer operation volume online metering system provided by the present invention to a mobile grain dryer using a spiral auger grain discharge mechanism.

[0067] The grain discharge operation mode of the mobile grain dryer using a spiral auger as a grain discharge mechanism is as follows: the spiral auger still lifts the dried grain from the bottom to the top and discharges it from the grain discharge pipe 16.

[0068] The speed measuring gear 4 is installed on the spiral stirring auger driving shaft 15 arranged vertically in the middle of the mobile grain dryer 17, and the magneto speed sensor 3 is installed outside the speed measuring gear 4 to measure the rotating speed of the spiral stirring auger 14 during the grain discharging operation, which is related to the grain conveying speed of the spiral stirring auger 14, and the output lead of the magneto speed sensor 3 is connected with the input end of the data acquisition and processing module 21 in the operation quantity metering terminal 1.

[0069] The moisture measuring module 2 is installed at the bottom of the mobile grain dryer 17 to perform online real-time detection of the moisture of the dried grain during the grain discharging operation of the grain dryer, and the data transmission line of the moisture measuring module 2 is connected with the input end of the data acquisition and processing module 21 in the operation quantity metering terminal 1.

[0070] The image monitoring module 5 is installed at the grain discharging pipe at the top of the mobile grain dryer 17 and is composed of an image sensor 23 and an edge intelligent processor 24, the image sensor 23 transmits the image of the dried grain in the grain discharging pipe to the edge intelligent processor 24, the edge intelligent processor 24 performs visual analysis on the type, size and quality of the dried grain, the data transmission line of the edge intelligent processor 24 is connected with the input end of the data acquisition and processing module 21 in the operation quantity metering terminal 1, and the type data and the bulk density correction coefficient data of the grain are transmitted to the data acquisition and processing module 21. The operation metering terminal 1 is installed on the body of the mobile grain dryer 17 and is composed of the data acquisition and processing module 21 and the man-machine interaction module 19, the 4G communication module 18 and the Beidou positioning module 20 connected with the data acquisition and processing module 21 through communication lines, the data acquisition and processing module 21 receives the data transmitted by the grain discharging mechanism work quantity measuring module 22, the moisture measuring module 2 and the image monitoring module 5 and calculates the drying operation quantity.

[0071] The grain discharging mechanism work quantity measuring module of the present application is composed of a magneto speed sensor and a speed measuring gear, therefore, the magneto speed sensor and the speed measuring gear can be installed at different positions of different types of dryers as needed, and therefore, the system has strong versatility. It is suitable for various types of dryers using gear driven grain discharging mechanisms, including but not limited to bucket elevator grain discharging, impeller grain discharging and swing grain discharging, including but not limited to batch type circulating dryers and continuous dryers.

[0072] The present application installs the moisture measuring module on the dryer to perform online real-time detection of the moisture of the dried grain during the grain discharging operation of the grain dryer, and the image monitoring module performs visual analysis on the type, size and quality of the dried grain; the drying operation quantity calculation accuracy is improved, that is, the operation quantity calculation considers the grain type, bulk density and moisture change, the metering result is accurate, and the actual operation situation of the dryer can be effectively metered

[0073] The present application has simple overall structure, low installation or modification difficulty. The system can be directly installed on the discharge driving gear shell of the dryer, without the need of large structural modification of the dryer, fast modification and installation, and small influence on production and operation activities of the storage enterprise.

[0074] The above merely describes the preferred embodiments of the present application and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A universal dryer operation volume online metering system, characterized in that: It includes the grain discharge mechanism workload measurement module, moisture measurement module, image monitoring module, and workload measurement terminal: The grain discharge mechanism workload measurement module is composed of a magnetoelectric speed sensor and a speed measuring gear. The speed measuring gear is installed on the drive shaft of the grain dryer grain discharge mechanism. The magnetoelectric speed sensor is installed on the side of the speed measuring gear. The speed of the grain discharge mechanism drive gear is measured after the grain is dried during the discharge operation. The output lead of the magnetoelectric sensor is connected to the workload metering terminal. The magnetoelectric speed sensor and the speed measuring gear are installed in different positions of different types of dryers as needed. The moisture measurement module is installed on the dryer to perform online real-time detection of the moisture content of the grain after drying during the grain discharge operation of the grain dryer. The data transmission line of the moisture measurement module is connected to the operation volume metering terminal; The image monitoring module is installed at the grain discharge point of the dryer and consists of an image sensor and an edge intelligent processor. The image sensor transmits the image of the dried grain to the edge intelligent processor, which performs visual analysis on the type, grain size and quality of the dried grain. The edge intelligent processor is connected to the workload metering terminal. The workload metering terminal calculates the workload of the dryer based on the data from the grain discharge mechanism workload measurement module, the moisture measurement module, and the image monitoring module. The cumulative calculation of the drying workload L is: Among them, L is the drying workload, the unit is kg, which is an integral quantity in the time period T after the grain is dried in the dryer, the unit is s. is the workload of the grain discharge mechanism at time t, that is, the speed of the grain discharge mechanism drive shaft at time t, the unit is r / s; p is the grain discharge volume under the unit speed of the grain discharge mechanism drive shaft, p is a constant, only related to the fixed dryer and grain discharge mechanism, the unit is L / r; The bulk density correction coefficient at time t is used for bulk density correction and is related to the grain type, grain grain volume and mass. The unit is kg / L. is the grain moisture content correction coefficient, which is used to correct the drying workload under standard moisture content and unify the measurement standard. It is related to the grain moisture content at time t and is dimensionless. The workload measurement module of the grain discharge mechanism measures the workload in real time online. The moisture measurement module is used for online real-time measurement. The image intelligent monitoring module collects and analyzes images of grain particle groups during grain discharge operations to perform online real-time measurements.

2. The universal dryer operation volume online metering system according to claim 1, characterized in that: The operation metering terminal is installed on the dryer and consists of a data acquisition and processing module and a human-computer interaction module, a 4G communication module and a Beidou positioning module connected thereto. The data acquisition and processing module receives data transmitted by the grain discharge mechanism workload measurement module, the moisture measurement module and the image monitoring module and calculates the drying workload. At the same time, the data acquisition and processing module is connected to the dryer control system and can receive the dryer grain discharge operation start signal; the Beidou positioning module transmits the dryer location information to the data acquisition and processing module; The human-computer interaction module can display the original data collected by the data acquisition and processing module and the workload data obtained after calculation and processing; the 4G communication module transmits the original data, workload data and dryer location information collected by the data acquisition and processing module to the cloud work platform.

3. The universal dryer operation volume online metering system according to claim 2, characterized in that: When the grain dryer is a continuous grain dryer, the speed measuring gear is installed on the driving shaft of the grain discharge impeller of the continuous dryer, and the magnetoelectric speed sensor is installed on the side of the speed measuring gear.

4. The universal dryer operation volume online metering system according to claim 3, characterized in that: The moisture measurement module is installed at the bottom of the continuous dryer where grain is placed.

5. The universal dryer operation volume online metering system according to claim 3, characterized in that: The image monitoring module is installed at the grain discharge point at the bottom of the continuous dryer.

6. The universal dryer operation volume online metering system according to claim 2, characterized in that: When the dryer is a batch cycle dryer, the speed measuring gear is installed on the driving shaft of the bucket elevator of the batch cycle grain dryer, and the magnetoelectric speed sensor is installed on the outside of the speed measuring gear.

7. The universal dryer operation volume online metering system according to claim 6, characterized in that: The moisture measurement module is installed at the bottom of the batch cycle grain dryer.

8. The universal dryer operation volume online metering system according to claim 6, characterized in that: The image monitoring module is installed at the grain discharge chute on the top of the batch circulation dryer.

9. The universal dryer operation volume online metering system according to claim 2, characterized in that: When the dryer is a mobile grain dryer with a spiral auger grain discharge mechanism, the speed measuring gear is installed on the spiral auger drive shaft placed vertically in the middle of the dryer; the magnetoelectric speed sensor is installed on the outside of the speed measuring gear; the moisture measurement module is installed at the bottom of the mobile grain dryer; and the image monitoring module is installed at the grain discharge pipe at the top of the mobile grain dryer.

10. The metering method of the universal dryer operation volume online metering system according to any one of claims 2 to 9, characterized in that: as follows: 1) Initialize the workload metering terminal, perform self-tests on each connected module, and after the self-tests are completed, obtain the geographic location information of the Beidou positioning module; 2) The operation metering terminal waits for the grain discharge start signal from the dryer control system. When it receives the grain discharge start signal, it reads the grain discharge mechanism workload measurement data, grain moisture data after drying, and image data after drying in real time, and performs cumulative calculation of the drying operation volume L. At the same time, the operation metering terminal transmits the raw data collected by the data acquisition and processing module and the workload data obtained after calculation to the human-computer interaction module for display; and transmits the raw data, workload data and dryer location information collected by the data acquisition and processing module to the cloud work platform through the 4G communication module; 3) The data acquisition and processing module in the operation metering terminal determines whether the grain discharge operation is completed by analyzing the grain discharge port image transmitted by the image monitoring module, and transmits the grain discharge operation completion signal to the dryer control system.

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