Universal grain dryer work load on-line metering system and universal grain dryer work load on-line metering method

Abstract

The invention discloses a general grain dryer operation quantity on-line metering system and method, and the system comprises a grain discharge mechanism workload measurement module, a moisture measurement module, an image monitoring module, and an operation quantity metering terminal. The grain discharge mechanism workload measurement module is composed of a magnetoelectric rotating speed sensor and a speed measurement gear. The speed measuring gear is installed on a driving shaft of a grain discharging mechanism of the grain dryer, the magnetoelectric rotating speed sensor is installed on the side face of the speed measuring gear, and the rotating speed of the driving gear of the grain discharging mechanism is measured after drying is conducted in the grain discharging operation process. In the grain discharging operation process of the grain dryer, the moisture of dried grains is detected on line in real time, and a data transmission line of a moisture measurement module is connected with an operation quantity metering terminal; the image monitoring module is installed at the grain discharging position of the dryer and connected with the workload metering terminal. And the workload metering terminal calculates the workload of the dryer according to data of the workload measuring module, the moisture measuring module and the image monitoring module of the grain discharging mechanism.

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] Drying grain at the production site is an important link and key measure to ensure grain quality, reduce post-production and post-disaster losses, and ensure a bumper grain harvest. It is urgent 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 measurement of grain drying operations, online moisture measurement, and information monitoring of dryer operations and stored grain conditions, so as to achieve online perception of operation service information, fine 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 issuance of operations such as field plant protection and deep tillage have been increasingly improved. However, due to the lack and insufficiency of online measurement systems and methods for grain drying operations, it is difficult to timely statistically supervise the grain dryer operations, which leads to the accurate calculation and accurate issuance of subsidies for grain drying operations. Existing grain drying equipment is not equipped with an online measurement system for drying operations, and it is impossible to achieve accurate online measurement of the operation volume. It is mostly measured by weighing before or after drying, and the authenticity of the data is difficult to guarantee. In addition, the cost of measuring the drying operation volume with a belt scale or flow scale is high, and the authenticity of the data is prone to tampering, which makes it difficult to promote it widely.

[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 workload, 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 continuous dryer remote network workload and quality monitoring system and method. However, whether it involves a batch cycle grain dryer or a continuous grain dryer, 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) The difference between grain moisture content and bulk density is not fully considered, the accuracy of the workload measurement method needs to be improved, and it is difficult to convert the standard moisture content, and then it is 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 invention is to overcome the defects of the current dryer operation volume metering system and method, such as insufficient versatility and need to improve metering accuracy, and to provide a universal dryer operation volume online metering system and method.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0007] In the first aspect, the present invention provides a universal dryer workload online metering system, including a grain discharge mechanism workload measurement module, a moisture measurement module, an image monitoring module, and a workload metering terminal:

[0008] 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 driving shaft of the grain discharge mechanism of the grain dryer. The magnetoelectric speed sensor is installed on the side of the speed measuring gear. The speed of the driving gear of the grain discharge mechanism is measured after drying during the grain discharge operation. The output lead of the magnetoelectric sensor is connected to the workload metering terminal.

[0009] The moisture measurement module is installed on the dryer, and the moisture of the grain after drying is detected online 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 volume metering terminal;

[0010] The image monitoring module is installed at the grain discharge 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 performs a visual analysis of the type of dried grain, grain grain size and quality. The edge intelligent processor is connected to the workload metering terminal.

[0011] As a further technical solution, 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 start signal of the dryer grain discharge operation; the Beidou positioning module transmits the dryer position information to the data acquisition and processing module; the human-computer interaction module can realize the display of 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.

[0012] As a further technical solution, 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.

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

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

[0015] As a further technical solution, when the dryer is a batch circulation dryer, the speed measuring gear is installed on the driving shaft of the bucket elevator of the batch circulation grain dryer, and the magnetoelectric speed sensor is installed on the outside of the speed measuring gear.

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

[0017] As a further technical solution, an image monitoring module is installed at the grain discharge chute at the top of the batch circulation 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 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.

[0019] In a second aspect, to achieve the above-mentioned purpose, the present invention also provides a universal dryer operation volume online measurement method, comprising the following steps:

[0020] 1) The workload metering terminal is initialized and self-checks each connected module. After the self-check is completed, the geographical location information of the Beidou positioning module is read;

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

[0022]

[0023] Where L is the drying workload, in kg, and is an integral of the grain release time period T after drying in the dryer, in seconds. t is the workload of the grain discharge mechanism at time t, that is, the speed of the driving shaft of the grain discharge mechanism at time t, in r / s; p is the grain discharge volume under the unit speed of the driving shaft of the grain discharge mechanism, p is a constant, which is only related to the fixed dryer and the grain discharge mechanism, in L / r; w tIt is the bulk density correction coefficient at time t, which is used for bulk density correction and is related to the grain type, grain grain volume and mass. The unit is kg / L; m t It 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.

[0024] z t The workload measurement module of the grain discharge mechanism is used to measure the workload in real time online, m t The moisture measurement module is used to measure the moisture in real time online. t The image intelligent monitoring module collects and analyzes images of grain particle groups during the grain discharge operation to perform online real-time measurement.

[0025] At the same time, the operation metering terminal transmits the original data collected by the data acquisition and processing module and the operation volume data obtained after calculation and processing to the human-computer interaction module for display; and through the 4G communication module, the original data collected by the data acquisition and processing module, the operation volume data and the dryer location information can be transmitted to the cloud work platform.

[0026] 3) The data acquisition and processing module in the operation metering terminal determines whether the grain releasing operation is completed by analyzing the grain releasing port image transmitted by the image monitoring module, and transmits the grain releasing operation completion signal to the dryer control system through the RS485 signal line.

[0027] The remote online monitoring system and method for the grain dryer operation volume of the present invention have the following beneficial effects:

[0028] 1. The grain discharge mechanism workload measurement module of the present invention is composed of a magnetoelectric speed sensor and a speed measuring gear. Therefore, the magnetoelectric 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 all types of dryers using gear-driven grain discharge mechanisms, including but not limited to bucket elevator discharge, impeller discharge, swing discharge, including but not limited to batch cycle dryers and continuous dryers;

[0029] 2. The present invention installs the moisture measurement module on the dryer, and performs online real-time detection of the moisture content of the dried grain during the grain discharge operation of the grain dryer. At the same time, the image monitoring module performs visual analysis on the type of grain, grain grain size and quality after drying; the accuracy of the calculation of the drying workload is improved, that is, the workload calculation takes into account the type of grain, bulk density and moisture changes, the measurement result is accurate, and the actual operation of the dryer can be effectively measured.

[0030] 3. The overall structure of the present invention is simple, and the installation or modification is easy. The system can be directly installed on the grain discharge drive gear housing of the dryer, without the need for a large number of structural modifications to the dryer. The modification and installation speed is fast, and the impact on the production and operation activities of the warehousing enterprise is small. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the connection between the grain drying operation volume metering system of the present invention and a continuous grain dryer using an impeller grain discharge mechanism.

[0032] Figure 2 It is a schematic diagram of the connection between the grain drying operation volume metering system of the present invention and a batch cycle grain dryer using a bucket elevator grain discharge mechanism.

[0033] Figure 3 The invention is a schematic diagram of the connection between the grain drying operation volume metering system of the present invention and a mobile grain dryer using a spiral auger grain discharge mechanism.

[0034] Figure 4 It is a block diagram of the grain drying operation volume metering system.

[0035] Figure 5 It is the program operation block diagram of the grain drying operation quantity metering system.

[0036] Among them, 1 is the workload metering terminal, 2 is the moisture measurement module, 3 is the magnetoelectric speed sensor, 4 is the speed measuring gear, 5 is the image monitoring module, 6 is the impeller grain discharge mechanism drive shaft, 7 is the grain transport belt, 8 is the impeller, 9 is the continuous grain dryer using the impeller grain discharge mechanism, 10 is the bucket elevator drive shaft, 11 is the bucket elevator bucket, 12 is the grain discharge chute, 13 is the batch circulation grain dryer using the bucket elevator grain discharge mechanism, 14 is the spiral auger, 15 is the spiral auger drive shaft, 16 is the grain discharge pipe, 17 is the mobile grain dryer using the spiral auger grain discharge mechanism, 18 is the 4G communication module, 19 is the human-computer interaction module, 20 is the Beidou positioning module, 21 is the data acquisition and processing module, 22 is the grain discharge mechanism workload measurement module, 23 is the image sensor, 24 is the edge intelligent processor, and 25 is the dryer control system. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0038] like Figure 1As shown, a general-purpose grain dryer workload online metering system provided by the present invention is composed of a grain discharge mechanism workload measurement module 22, a moisture measurement module 2, an image monitoring module 5, and a workload metering terminal 1, wherein the workload metering terminal 1 is composed of a data acquisition and processing module 21, a human-computer interaction module 19, a 4G communication module 18 and a Beidou positioning module 20.

[0039] The grain discharge mechanism workload measurement module 22 is composed of a magnetoelectric speed sensor 3 and a speed measuring gear 4. The speed measuring gear is installed on the driving shaft of the grain discharge mechanism of the grain dryer. The magnetoelectric speed sensor is installed on the side of the speed measuring gear. The speed of the driving gear of the grain discharge mechanism is measured after drying during the grain discharge operation. The output lead of the magnetoelectric sensor 3 is connected to the input end of the data acquisition processing module 21 in the workload metering terminal 1.

[0040] The moisture measurement module 2 is installed on the dryer, and 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 21 in the workload metering terminal 1.

[0041] The image monitoring module 5 is installed at the grain discharge point of the dryer and is composed of an image sensor 23 and an edge intelligent processor 24. The image sensor transmits the image of the dried grain to the edge intelligent processor, and the edge intelligent processor 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 is connected to the input end of the data acquisition and processing module in the workload metering terminal, and transmits the grain type data and bulk density correction coefficient data to the data acquisition and processing module.

[0042] 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 to it. 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 through the RS485 communication line and can receive the start signal of the dryer grain discharge operation; the Beidou positioning module transmits the dryer location information to the data acquisition and processing module; the human-computer interaction module can realize the display of the original data collected by the data acquisition and processing module and the workload data obtained after calculation and processing; the 4G communication module can transmit the original data, workload data and dryer location information collected by the data acquisition and processing module to the cloud work platform.

[0043] like Figure 2 As shown, this embodiment is based on the above system and also provides a general grain dryer operation volume online measurement method, which includes the following steps:

[0044] 1) The workload metering terminal 1 is initialized, and each connected module is self-checked. After the self-check is completed, the geographical location information of the Beidou positioning module 20 is read;

[0045] 2) The operation metering terminal 1 waits for the grain discharge operation start signal from the dryer control system (25). When the operation metering terminal receives the grain discharge operation start signal, the operation metering terminal 1 reads the grain discharge mechanism workload measurement data, the grain moisture data after drying, and the image data after drying in real time, and performs cumulative calculation of the drying workload L.

[0046]

[0047] Where L is the drying workload, in kg, and is an integral of the grain release time period T after drying in the dryer, in seconds. t is the workload of the grain discharge mechanism at time t, that is, the speed of the driving shaft of the grain discharge mechanism at time t, in r / s; p is the grain discharge volume under the unit speed of the driving shaft of the grain discharge mechanism, p is a constant, which is only related to the fixed dryer and the grain discharge mechanism, in L / r; w t It is the bulk density correction coefficient at time t, which is used for bulk density correction and is related to the grain type, grain grain volume and mass. The unit is kg / L; m t It 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.

[0048] z t The workload measurement module of the grain discharge mechanism is used to measure the workload in real time online, m t The moisture measurement module 2 measures the moisture in real time online. t The image intelligent monitoring module 5 collects and analyzes images of grain particle groups during the grain discharge operation to perform online real-time measurement.

[0049] At the same time, the operation metering terminal 1 transmits the original data collected by the data acquisition and processing module 21 and the operation volume data obtained after calculation and processing to the human-computer interaction module 19 for display; and the original data, operation volume data and dryer location information collected by the data acquisition and processing module 21 can be transmitted to the cloud work platform through the 4G communication module 18.

[0050] 3) The data acquisition and processing module 21 in the operation metering terminal 1 determines whether the grain discharge operation is completed by analyzing the grain discharge port image transmitted by the image monitoring module 5, and transmits the grain discharge operation completion signal to the dryer control system (25) through the RS485 signal line.

[0051] The installation positions of the speed measuring gear 4, the magnetoelectric speed sensor 3, the moisture measuring module 2 and the image monitoring module 5 are described below in combination with different types of dryers:

[0052] Example 1

[0053] like Figure 1 As shown, a universal grain dryer operation volume online metering system provided by the present invention is applied to a continuous grain dryer using an impeller grain discharge mechanism.

[0054] The grain discharging operation mode of the continuous grain dryer using the grain discharging impeller as the grain discharging mechanism is as follows: the grain discharging impeller rotates, driving the dried grain to move downward, and the dried grain is discharged from the dryer and falls onto the grain transport belt 7;

[0055] The speed measuring gear 4 is installed on the driving shaft of the grain discharge impeller of the continuous dryer, and the magnetoelectric speed sensor 3 is installed on the outside of the speed measuring gear. The speed of the grain discharge impeller driving shaft 6 is measured after drying during the grain discharge operation. The speed is related to the grain discharge speed of the impeller 8. The output lead of the magnetoelectric speed sensor is connected to the input end of the data acquisition and processing module 21 in the workload metering terminal 1.

[0056] The moisture measurement module 2 is installed at the bottom of the continuous dryer 9 where grain is discharged. The moisture content of the grain after drying is detected online in real time 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 21 in the workload metering terminal.

[0057] The image monitoring module 5 is installed at the grain discharge point at the bottom of the continuous dryer 9, 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 on the grain transport belt to the edge intelligent processor 24, and the edge intelligent processor 24 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 workload metering terminal 1, and transmits the grain type data and bulk density correction coefficient data to the data acquisition and processing module.

[0058] The operation metering terminal 1 is installed on the body of the continuous dryer 9, 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 to it through 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.

[0059] Example 2

[0060] like Figure 2 As shown, the application of a universal grain dryer operation volume online metering system provided in this embodiment to a batch cycle grain dryer using a bucket elevator grain discharge mechanism.

[0061] The grain discharging operation mode of the batch-type 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 discharging chute 12.

[0062] The speed measuring gear 4 is installed on the driving shaft 10 of the bucket elevator of the batch circulation 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 after drying is detected online in real time 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 cycle dryer 13, and is composed of an image sensor 23 and an edge intelligent processor 24. The image sensor 23 transmits the image of the grain after drying in the grain discharge chute 12 to the edge intelligent processor 24, and the edge intelligent processor 24 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 at the fuselage of the batch cycle dryer 13, and is composed 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 through a communication line. The data acquisition and processing module 21 receives the 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, a universal grain dryer operation volume online metering system provided by the present invention is applied to a mobile grain dryer adopting a spiral auger grain discharge mechanism.

[0067] The grain discharge operation mode of the mobile grain dryer using the spiral auger as the 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 auger driving shaft 15 placed vertically in the middle of the mobile grain dryer 17, and the magnetoelectric speed sensor 3 is installed on the outside of the speed measuring gear 4. The speed of the spiral auger 14 is measured during the grain discharge operation. The speed is related to the speed of the spiral auger 14 conveying 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 operation volume metering terminal 1.

[0069] The moisture measurement module 2 is installed at the bottom of the mobile grain dryer 17, and the moisture content of the grain after drying is detected online in real time 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 21 in the workload metering terminal 1.

[0070] The image monitoring module 5 is installed at the grain discharge pipe on 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 discharge pipe to the edge intelligent processor 24, and the edge intelligent processor 24 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 at the fuselage of the mobile grain dryer 17, and is composed 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 through a communication line. The data acquisition and processing module 21 receives the 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.

[0071] The grain discharge mechanism workload measurement module of the present invention is composed of a magnetoelectric speed sensor and a speed measuring gear. Therefore, the magnetoelectric 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 all types of dryers using gear-driven grain discharge mechanisms, including but not limited to bucket elevator discharge, impeller discharge, swing discharge, including but not limited to batch cycle dryers and continuous dryers;

[0072] The present invention installs a moisture measurement module on the dryer, and performs online real-time detection of the moisture content of the dried grain during the grain discharge operation of the grain dryer. At the same time, the image monitoring module performs visual analysis on the type of grain, grain grain size and quality after drying; the accuracy of the calculation of the drying workload is improved, that is, the workload calculation takes into account the type of grain, bulk density and moisture changes, the measurement result is accurate, and the actual operation of the dryer can be effectively measured.

[0073] The overall structure of the present invention is simple, and the installation or modification difficulty is low. The system can be directly installed on the grain discharge drive gear housing of the dryer, without a large number of structural modifications to the dryer, and the modification and installation speed is fast, with little impact on the production and operation activities of the storage enterprise.

[0074] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A universal dryer operation volume online metering system, characterized in that: Including 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 driving shaft of the grain discharge mechanism of the grain dryer. The magnetoelectric speed sensor is installed on the side of the speed measuring gear. The speed of the driving gear of the grain discharge mechanism is measured after drying during the grain discharge operation. The output lead of the magnetoelectric sensor is connected to the workload metering terminal. The moisture measurement module is installed on the dryer, and the moisture of the grain after drying is detected online 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 volume metering terminal; The image monitoring module is installed at the grain discharge 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 performs a visual analysis of the type of dried grain, grain grain size and quality. The edge intelligent processor is connected to the workload metering terminal. The workload metering terminal calculates the workload of the dryer according to the data of the workload measurement module of the grain discharge mechanism, the moisture measurement module and the image monitoring module.

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 is composed 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 a start signal for the grain discharge operation of the dryer; 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 bottom of the continuous dryer where grain is discharged.

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 cycle 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 on 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-checks on each connected module, and after the self-checks are completed, obtain the geographical location information of the Beidou positioning module; 2) The operation metering terminal waits for the grain discharge operation start signal from the dryer control system. When the operation metering terminal receives the grain discharge operation start signal, the operation metering terminal reads the grain discharge mechanism workload measurement data, the grain moisture data after drying, and the image data after drying in real time, and performs cumulative calculation of the drying operation volume L; Where L is the drying workload, in kg, and is an integral of the grain release time period T after drying in the dryer, in seconds. t is the workload of the grain discharge mechanism at time t, that is, the speed of the driving shaft of the grain discharge mechanism at time t, in r / s; p is the grain discharge volume under the unit speed of the driving shaft of the grain discharge mechanism, p is a constant, which is only related to the fixed dryer and the grain discharge mechanism, in L / r; w t It is the bulk density correction coefficient at time t, which is used for bulk density correction and is related to the grain type, grain grain volume and mass. The unit is kg / L; m t is the grain moisture content correction coefficient, which is used to correct the drying workload under standard moisture content, unify the measurement standard, and is related to the grain moisture content at time t, dimensionless; t The workload measurement module of the grain discharge mechanism is used to measure the workload in real time online, m t The moisture measurement module is used to measure the moisture in real time online. t The image intelligent monitoring module collects and analyzes images of grain particle groups during grain discharge operations to conduct online real-time measurements; At the same time, the operation metering terminal transmits the original data collected by the data collection and processing module and the operation volume data obtained after calculation and processing to the human-computer interaction module for display; and the original data, operation volume data and dryer location information collected by the data collection and processing module can be transmitted 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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