Stock bin discharging monitoring system and method

Abstract

The invention discloses a stock bin discharging monitoring system which comprises at least one scanning device arranged at the top of a stock bin and at least used for scanning the surface of a material to obtain material surface data information of the material; the discharging valve is arranged at a discharging opening in the bottom of the stock bin and used for controlling material state information at the discharging opening; and the data processing module is used for acquiring the material level data information and the material state information at the discharge port, and analyzing and processing the material level data information and the material state information at the discharge port so as to judge whether the discharge of the stock bin is abnormal or not. The invention further discloses a stock bin discharging monitoring method. The state information of the discharging valve, the historical material form information or the material flow information at the discharging port is combined with the material level data information, whether the material surface shape and the discharging speed are abnormal or not is judged by analyzing and processing the material level data information, and then whether discharging of the stock bin is abnormal or not is intelligently monitored.

Description

Technical Field

[0001] The present invention relates to the technical field of silo monitoring, and in particular to a silo discharge monitoring system and method. Background Art

[0002] Silos are widely used in process industrial production and are an essential part of material transportation and handling. They are used to adjust and buffer the balance between the various operating procedures before and after to ensure the continuity of process production. In normal production, materials in silos such as coal silos, ore silos, and mineral powder flow in the changing cone silos, forming a large extrusion force. Due to the large friction coefficient and repose angle between materials, coupled with the influence of physical factors such as material moisture content, particle size composition, and surface shape, the materials have strong adhesion to each other, which prevents them from flowing out of the silo under their own gravity, resulting in abnormal conditions such as arching, caking, wall hanging, and blockage, resulting in an imbalance in the material ratio, which will not only affect normal production, but also cause great economic losses to production companies in serious cases.

[0003] In addition, due to the large size of the silo, it is often impossible to visually observe and immediately discover whether there are any abnormalities in the discharging process in the silo, which will greatly affect the normal production or operation of the enterprise, and will cause great economic losses to the enterprise.

[0004] Therefore, there is a need in the art for a monitoring system or method that can promptly detect abnormal discharge conditions in a silo. Summary of the invention

[0005] The present invention provides a silo discharge monitoring system and method, which are used to solve the technical problems that the existing silo cannot visually observe and discover whether there is abnormal discharge in the silo during the discharge process, affecting the normal production or operation of the enterprise, and thus causing great economic losses to the enterprise.

[0006] In order to achieve the above-mentioned object, the present invention discloses a silo discharge monitoring system, comprising:

[0007] At least one scanning device, arranged on the top of the silo, at least used to scan the surface of the material to obtain material surface data information;

[0008] A discharge valve, arranged at the discharge port at the bottom of the silo, for controlling the material status information at the discharge port;

[0009] The data processing module is used to obtain the material surface data information and the material status information at the discharge port, and analyze and process the material surface data information and the material status information at the discharge port to determine whether the discharge of the silo is abnormal.

[0010] In a further possible implementation of the present invention, when the discharge valve is opened so that the material at the discharge port is in a discharging state, the data processing module analyzes and processes the material volume change or material surface shape information in the material surface data information within a preset time period to determine whether the discharge of the silo is abnormal.

[0011] In a further possible implementation of the present invention, the material discharging abnormality includes at least one of abnormal material surface shape and abnormal material discharging speed.

[0012] In a further possible implementation of the present invention, the abnormal material surface shape includes at least one of material agglomeration, material wall hanging, material peaks, material protrusions, material cross-sections, abnormal material stacking angles, and material arches.

[0013] In a further possible implementation of the present invention, if the data processing module analyzes and processes that the material surface is continuous but the volume does not change within a preset time period, it is determined that material arching occurs in the silo.

[0014] In a further possible implementation of the present invention, when the discharge valve is opened so that the material at the discharge port is in a discharge state, the data processing module analyzes and processes the material volume change in the material surface data information within a preset time period to obtain a discharge speed;

[0015] When the data processing module analyzes and processes that the discharge speed is abnormal and the discharge speed value is greater than 0, if the material surface shape in the material surface data information is normal, it is determined that material blockage occurs in the silo.

[0016] In a further possible implementation of the present invention, when the discharge valve is opened so that the material at the discharge port is in a discharge state, the data processing module analyzes and processes the material volume change in the material surface data information within a preset time period to obtain a discharge speed;

[0017] When the data processing module analyzes and processes that the discharge speed is abnormal and the discharge speed is 0, it is determined that material arching, material cross-section or material empty warehouse occurs in the silo.

[0018] In a further possible implementation of the present invention, a material flow detection switch is provided at the material outlet, and the material flow detection switch is used to detect material flow information at the material outlet;

[0019] The data processing module performs analysis and processing based on the material surface data information, the material status information at the discharge port, and the material flow information at the discharge port to determine whether the discharge of the silo is abnormal.

[0020] In a further possible implementation of the present invention, when the discharge valve is opened so that the material at the discharge port is in a discharge state,

[0021] When the material flow detection switch detects material flow data, the data processing module analyzes and processes the material volume change in the material surface data information within a preset time period to be less than or equal to the volume change threshold value. If the material surface shape in the material surface data information is normal, it is determined that material blockage occurs in the silo;

[0022] When the material flow detection switch detects that there is no material flow data, the data processing module determines that material arching, material cross-section or material empty warehouse occurs in the silo.

[0023] In a further possible implementation of the present invention, it also includes a data storage module, which is connected to the data processing module, and the data storage module is used to store historical material morphology information; the historical material morphology information includes at least one of a material shape reference curve when there is no blockage and a material discharge reference speed.

[0024] In a further possible implementation of the present invention, the data processing module obtains the material surface data information transmitted by the scanning device, analyzes and compares the material surface data information with the material shape reference curve and the material discharge reference speed to determine whether the discharge of the silo is abnormal.

[0025] In a further possible implementation of the present invention, at least one of the scanning devices switches the working logic to the regional scanning logic according to the position of the discharge valve, and at least scans and detects the sub-material surface data information within the area where the discharge valve is located according to the regional scanning logic.

[0026] In a further possible implementation of the present invention, when the discharge valve is opened so that the material at the discharge port is in a discharging state, the data processing module analyzes and processes the material volume change or material shape information in the sub-material surface data information within a preset time period to determine whether the discharge of the silo is abnormal.

[0027] In a further possible implementation of the present invention, the scanning device includes at least one of a 3D microwave radar, a 3D laser radar, a 2D microwave radar, a 2D laser radar, a single-point microwave radar, a single-point laser radar, and a binocular camera.

[0028] Another aspect of the present invention discloses a method for monitoring material discharge from a silo, comprising the following steps:

[0029] Scanning the surface of the material by at least one scanning device disposed on the top of the silo to obtain material surface data information;

[0030] The material status information at the discharge port is controlled by a discharge valve arranged at the discharge port at the bottom of the silo;

[0031] The material surface data information and the material status information at the discharge port are obtained, and analyzed and processed to determine whether the discharge of the silo is abnormal.

[0032] In a further possible implementation of the present invention, the obtaining of the material surface data information and the material status information at the discharge port, and performing analysis and processing to determine whether the discharge of the silo is abnormal, comprises the following steps:

[0033] Obtaining whether the discharge port is in a discharge state through the discharge valve;

[0034] Acquiring the material surface data information through the scanning device;

[0035] The material volume change or material shape information in the material surface data information is analyzed and processed within a preset time period to determine whether the material bin has abnormal discharge.

[0036] The present invention discloses a silo discharge monitoring system, comprising at least one scanning device, a discharge valve and a data processing module, wherein the scanning device is arranged at the top of the silo, and is at least used to scan the material surface to obtain material surface data information; the discharge valve is arranged at the discharge port at the bottom of the silo, and is used to control the material status information at the discharge port; the data processing module is used to obtain the material surface data information and the material status information at the discharge port, and analyze and process the material surface data information and the material status information at the discharge port to determine whether the silo discharge is abnormal. The present invention also discloses a silo discharge monitoring method. The present invention combines the status information of the discharge valve, the historical material form information or the material flow information at the discharge port with the material surface data information, analyzes and processes the material surface data information to determine whether the material surface shape is abnormal and analyzes and processes to determine whether the discharge speed is abnormal, and analyzes and determines whether the discharge in the silo is abnormal by combining the material surface shape with the discharge speed. This analysis and judgment method can intelligently monitor whether the discharge in the silo is abnormal, and can analyze the specific situation of the abnormal discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation of the present invention. In the accompanying drawings:

[0038] Figure 1 This is a schematic diagram of the framework structure of a silo discharge monitoring system disclosed in the present invention. Figure 1 ;

[0039] Figure 2This is a schematic diagram of the framework structure of a silo discharge monitoring system disclosed in the present invention. Figure 2 ;

[0040] Figure 3 This is a schematic diagram of the framework structure of a silo discharge monitoring system disclosed in the present invention. Figure 3 ;

[0041] Figure 4 It is a schematic diagram of material arching in abnormal material surface shape;

[0042] Figure 5 It is a schematic diagram of the material cross section in the case of abnormal material shape;

[0043] Figure 6 This is a schematic diagram of material hanging on the wall in abnormal material shape;

[0044] Figure 7 It is a schematic diagram of the process structure of a silo discharge monitoring method disclosed by the present invention.

[0045] Summary of reference numerals:

[0046] 1. Scanning device 2. Discharge valve 3. Data processing module

[0047] 4. Material flow detection switch 5. Data storage module DETAILED DESCRIPTION

[0048] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0049] like Figure 1 As shown, on one hand, the present invention discloses a silo discharge monitoring system, comprising: at least one scanning device 1, arranged on the top of the silo, at least for scanning the material surface to obtain material surface data information; a discharge valve 2, arranged at the discharge port at the bottom of the silo, for controlling the material status information at the discharge port; a data processing module 3, for obtaining the material surface data information and the material status information at the discharge port, and analyzing and processing the material surface data information and the material status information at the discharge port to determine whether the discharge of the silo is abnormal.

[0050] The present invention sets a discharge valve 2 at the discharge port, and then obtains information about whether the material is in a discharging or non-discharging state through the discharge valve 2, and then analyzes and processes the material surface data information to determine whether the discharge of the silo is abnormal.

[0051] In the present invention, the material status information at the discharge point in the silo is obtained through the discharge valve 2. For example, when the discharge valve 2 is opened, the material in the silo is in the discharge state, and when the discharge valve 2 is closed, the material in the silo is in the storage or non-discharge state.

[0052] Usually, the silo is large in size and the silo control room is far away from the silo, so the material information in the silo cannot be directly observed, and the discharge process cannot be understood in time. If there is an abnormality in the silo discharge process, if it is not discovered in time, it may have a great impact on the normal production or operation of the enterprise, and even cause great economic losses to the enterprise. For example, the discharge abnormality may cause the proportion of ingredients not meeting the requirements, or the discharge abnormality may cause the transport vehicle to transport materials that do not meet the requirements, etc., which may affect the normal production or operation of the enterprise due to the discharge abnormality.

[0053] The present invention combines the status information of the discharge valve 2, the historical material shape information or the material flow information at the discharge port with the material surface data information, analyzes and processes the material surface data information to determine whether the material surface shape is abnormal and analyzes and processes to determine whether the discharge speed is abnormal, and analyzes and determines whether the discharge in the discharge bin is abnormal by combining the material surface shape with the discharge speed. This method can intelligently monitor whether the discharge in the bin is abnormal, and can analyze the specific circumstances of the abnormal discharge, thereby helping enterprises to timely understand the abnormal discharge situation and monitor the discharge process in real time, thereby minimizing the losses of the enterprises.

[0054] Specifically, when the discharge valve 2 at the discharge port in the silo is opened so that the material at the discharge port is in a discharge state, the data processing module 3 analyzes and processes the material volume change (material discharge flow rate) or material surface shape information in the material surface data information within a preset time period to determine whether the discharge of the silo is abnormal.

[0055] Since the volume of the silo is large, it takes a period of time for the material surface to change slowly. Therefore, the data processing module 3 in the present invention needs to monitor the material surface shape information and the material volume change in the material surface data information within a preset time period to determine whether the material discharge is abnormal. The material discharge abnormality includes at least one of the material surface shape abnormality and the material discharge speed abnormality.

[0056] The abnormal material surface shape includes at least one of material agglomeration, material wall hanging, material peak, material protrusion, material cross section, abnormal material stacking angle, and material arch.

[0057] In the present invention, the scanning device 1 is used to scan the material surface to obtain material surface data information, and the material surface data information includes at least one of the three-dimensional shape of the material, the material volume, the material mass, the highest material level, the lowest material level, and the average material level. Among them, the three-dimensional shape of the material can intuitively show the material shape of the material surface, for example, it can be seen that there are material agglomerations, material wall hanging, material peaks, material protrusions, material cross-sections or material stacking angles on the material surface. Abnormal material shape conditions such as abnormality.

[0058] The scanning device 1 at least includes one of a 3D microwave radar, a 3D laser radar, a 2D microwave radar, a 2D laser radar, a single-point microwave radar, a single-point laser radar, and a binocular camera.

[0059] The following is an explanation of the abnormal shape of the material:

[0060] Material agglomeration: The material that is seen on the surface of the material is a mass or a piece, which can be a spherical or irregular material block. It appears on the surface of the material, which is different from the smooth curve of the material surface. Among them, material agglomeration may occur on the surface of the material in the silo, or it may occur inside the material, and the volume may be large or small. The three-dimensional shape curve of the material can intuitively see the agglomeration on the surface of the material, and the internal agglomeration may be seen in the three-dimensional shape curve of the material at other times during the discharge process.

[0061] Material hanging on the wall: the material is squeezed or other factors adhere to the inner wall of the silo, and as the material discharge level drops, it will appear on the material surface, and it will not be discharged with the normal material; Figure 6 The medium dark area is the wall-hanging material, and the light area is the flowing material;

[0062] Material peak: It can be a material agglomeration with a peak shape. If it appears on the inner wall of the silo, it is considered that the material is hanging on the wall. If it is in the middle of the material surface, it is considered that the material is agglomerated.

[0063] Material bulge: When you see material bulging upward on the surface of the material, such as the bulge during the feeding process, the bulge is similar to an arch structure. If the arch shape does not change during a period of discharging, it is considered that the material surface has an arch phenomenon; if the bulge is only a local material bulge, it can be considered as material agglomeration;

[0064] Material cross section: The material surface shape is cross-sectional, and the material shape is fixed and does not change within a certain period of time. The cross-sectional material shape is vertical or nearly vertical. If the material cross section is relative to the material surface, that is, a material shape similar to a "rat hole" appears in the silo, such as Figure 5 As shown, the mouth of the "rat hole" is directly opposite to the discharge port, and no material flow information can be detected at the discharge port at this time;

[0065] Abnormal material stacking angle: Under normal circumstances, the material shape facing the discharge port is funnel-shaped. If the material surface is arched or convex, that is, there is an abnormality compared with the normal discharge stacking angle, then the stacking angle is considered abnormal. For example, if the material surface is arched, or the discharge port is blocked and the material cannot be discharged normally, the stacking angle will be abnormal, or other abnormal discharge conditions will cause abnormal material stacking angle.

[0066] For silo managers, whether the discharge port can discharge materials normally and whether the material shape is normal are important factors in silo monitoring. Abnormal material shape can be intuitively seen through the material surface data information. Whether the discharge port discharges materials normally needs to be analyzed and processed by the data processing module 3. The following is a detailed description of whether the discharge port discharges materials normally.

[0067] The discharge valve 2 at the discharge port in the silo can be manually controlled or intelligently remotely controlled, so that the open and closed states of the discharge valve 2 are known states, for example, manually uploaded to the system, or remotely communicated to obtain its state. After obtaining the open or closed state of the discharge valve 2, the data processing module 3 will obtain the material surface data information and the material status information at the discharge port, and analyze and process the material surface data information and the material status information at the discharge port to determine whether the discharge of the silo is abnormal.

[0068] When the discharge valve 2 is opened so that the material at the discharge port is in a discharge state, the data processing module 3 analyzes and processes the material volume change (material discharge flow rate) in the material surface data information within a preset time period to obtain the discharge speed. The preset time period is a set value, which can be 10 minutes, 20 minutes, half an hour or other values. The preset time period can be specifically set according to parameters such as the specific type of material and the number of discharge ports. Under normal circumstances, the material shape will change within the preset time period.

[0069] When the data processing module 3 analyzes and processes that the discharging speed is abnormal, and the discharging speed value is greater than 0, there is material flow information at the discharging port at this time. If the material surface shape in the material surface data information is normal, it is judged that material blockage occurs in the silo. Among them, material blockage means that there is a discharging flow at the discharging port, but the discharging flow is abnormal (the discharging speed is less than the normal discharging speed when abnormal). In this case, it means that the material is in a discharging state, the material surface shape is normal, but the discharging speed is abnormal, which means that material blockage must occur at the discharging port. On the contrary, if material blockage occurs at the discharging port, the material surface shape may be normal or abnormal at this time. Alternatively, material agglomeration, material wall hanging or material protrusion on the surface or inside of the material are all cases of abnormal material surface shape, but if the material flow information at the discharging port is normal, the discharging speed is normal.

[0070] When the data processing module 3 analyzes and processes that the discharge speed is abnormal and the discharge speed is 0, and the material volume does not change within the preset time period, it is determined that the material has arched, the material has a cross section, or the material is empty in the silo. Figure 4 As shown in , if the material is arched, the material arch occurs at the discharge port, so that no material flow occurs at the discharge port, that is, there is no material flow information; Figure 5 As shown in the figure, if it is a material cross-section situation, the material cross-section is a relative surface, and the "rat hole" in the middle is opposite to the discharge port. The material does not flow within the preset time period, that is, there is no material flow information; material empty warehouse means that the material discharge is completed within the preset time period, and the material empty warehouse appears. At this time, it is necessary to combine the material surface data information to further determine whether it is a real material empty warehouse, a material arch or a material cross-section.

[0071] Among them, material arching is a special but common phenomenon, and is a key abnormal discharge situation that needs to be monitored during material monitoring. Figure 4 As shown, the material arching on the material surface can be intuitively seen through the three-dimensional material shape, but if the material arching is inside the material or at the discharge port, it cannot be intuitively seen. At this time, it is necessary to make a comprehensive judgment based on the material shape and the change in material volume. Material arching may occur on the material surface, inside the material or at the discharge port, but if the data processing module 3 analyzes and processes the discharge material surface continuously but the volume does not change within the preset time period, it is judged that material arching occurs at the discharge port in the silo.

[0072] In a further embodiment of the present invention, Figure 2 As shown, a material flow detection switch 4 may be provided at the discharge port, and the material flow detection switch 4 is used to detect the material flow information at the discharge port. The data processing module 3 analyzes and processes the material surface data information, the material status information at the discharge port, and the material flow information at the discharge port to determine whether the discharge of the silo is abnormal.

[0073] Specifically, the material flow detection switch 4 may be a microwave Doppler detection device, through which the material flow condition can be identified to detect the material flow information.

[0074] After the material flow detection switch 4 is provided at the discharge port, the data processing module 3 can analyze and process the material status information, material flow information and material surface data information at the discharge port to determine whether there is abnormal discharge in the silo or at the discharge port.

[0075] When the discharge valve 2 is opened so that the material at the discharge port is in a discharge state, the material flow detection switch 4 may detect material flow data or may not detect material flow data.

[0076] When the material flow detection switch 4 detects that there is material flow data, the data processing module 3 analyzes and processes the material volume change in the material surface data information within a preset time period to be less than or equal to the volume change threshold. If the material surface shape in the material surface data information is normal, it is determined that material blockage occurs in the silo. Among them, the volume change threshold is the volume change during the material discharging process within a preset time period under normal circumstances, that is, the normal discharging speed; material blockage refers to the discharge flow at the discharge port, but the discharge flow is abnormal (the discharge speed is less than the normal discharge speed when abnormal). In this case, it means that the material is in the discharge state, the material surface shape is normal, but the discharge speed is abnormal, which means that material blockage must occur at the discharge port. On the contrary, if material blockage occurs at the discharge port, the material surface shape may be normal or abnormal at this time. Alternatively, material agglomeration, material wall hanging or material protrusion on the surface or inside of the material are all abnormal material surface shapes, but if the material flow information at the discharge port is normal, the discharge speed is normal.

[0077] When the material flow detection switch 4 detects that there is no material flow data, the data processing module 3 determines that material arching, material cross section or material empty warehouse occurs in the material bin. At this time, if it is a material arching situation, the material arching occurs at the discharge port, so that no material flow occurs at the discharge port, that is, there is no material flow information; if it is a material cross section situation, the material cross section is a relative surface, and the "rat hole" in the middle is opposite to the discharge port. The material does not flow within the preset time period, that is, there is no material flow information; if it is a material empty warehouse situation, the material empty warehouse means that the material discharge is completed within the preset time period, and the material empty warehouse appears. At this time, it is necessary to combine the material surface data information to further determine whether it is a real material empty warehouse, or a material arch or material cross section.

[0078] In a further embodiment of the present invention, Figure 3 As shown, the silo discharge monitoring system may further include a data storage module 5, which is connected to the data processing module 3, and is used to store historical material morphology information; the historical material morphology information includes at least one of a material shape reference curve when there is no material blockage and a material discharge reference speed. The historical material morphology information is standard material morphology information obtained by modeling and simulating with big data, and the standard material morphology information is material morphology information corresponding to the situation when there is no material shape abnormality or discharge speed abnormality, and the standard material morphology information includes at least one of a material shape reference curve when there is no material blockage and a material discharge reference speed.

[0079] Alternatively, the historical material form information may be directly stored in the data processing module 3 in advance, and in this case the system does not need the data storage module 5.

[0080] Exemplarily, the data processing module 3 obtains the material surface data information transmitted by the scanning device 1, analyzes and compares the material surface data information with the material shape reference curve and the material discharge reference speed to determine whether the material bin has abnormal discharge within a preset time period.

[0081] Among them, the material surface data information includes the three-dimensional shape and volume of the material. The three-dimensional shape of the material is the material shape curve. The real-time material shape curve scanned by the scanning device 1 is analyzed and compared with the material shape reference curve. If the material shape curves are similar or the same, the material shape is considered to be normal, otherwise the material shape is considered to be abnormal.

[0082] In addition, the data processing module 3 analyzes and processes the material volume in the material surface data information, obtains the real-time material discharging speed according to the volume change, and analyzes and compares the real-time material discharging speed with the material discharging reference speed. If the real-time material discharging speed is equal to or close to the material discharging reference speed, it means that the discharging is normal, otherwise it is considered that the discharging is abnormal.

[0083] For the material discharge reference speed, a certain tolerance value can be set. The material discharge reference speed within a certain tolerance value range can be used as the real-time material discharge speed comparison object. At this time, the real-time material discharge speed is analyzed and compared with the material discharge reference speed with a certain tolerance value. If the material discharge speed is outside the material discharge reference speed tolerance range, it means that the discharge in the silo is abnormal, otherwise the discharge in the silo is normal.

[0084] During the discharge process of the material in the silo, the shape of the material in the range of the discharge port changes greatly. Therefore, the material surface data information can be quickly obtained through regional scanning, and then the current material surface data information can be quickly updated. For the material surface outside the range of the discharge port, the other scanning devices in at least one scanning device can be scanned through normal scanning logic to obtain the corresponding material surface data information, and then the material surface data information inside and outside the range of the discharge port is fused to obtain the global material surface data information.

[0085] Specifically, at least one of the scanning devices 1 switches the working logic to the regional scanning logic according to the position of the discharge valve 2, and at least scans and detects the sub-material surface data information within the area where the discharge valve 2 is located according to the regional scanning logic.

[0086] In a further possible implementation of the present invention, when the discharge valve 2 is opened so that the material at the discharge port is in a discharging state, the data processing module 3 analyzes and processes the material volume change or material shape information in the sub-material surface data information within a preset time period to determine whether the discharge of the silo is abnormal.

[0087] It should be noted that the material volume change or material shape information in the sub-material surface data information is analyzed and processed to determine whether the material bin has abnormal discharge. The specific judgment process is the same as the above-mentioned analysis and processing of the material volume change or material shape information in the material surface data information obtained by scanning the entire material surface to determine whether the material bin has abnormal discharge, and will not be repeated here.

[0088] like Figure 7 As shown, the present invention also discloses a method for monitoring material discharge from a silo, comprising the following steps:

[0089] Step S100: scanning the material surface by at least one scanning device 1 disposed on the top of the silo to obtain material surface data information;

[0090] Step S200: controlling the material status information at the discharge port by means of a discharge valve 2 arranged at the discharge port at the bottom of the silo;

[0091] Step S300: acquiring the material surface data information and the material status information at the discharge port, and performing analysis and processing to determine whether the discharge of the silo is abnormal.

[0092] In a further embodiment of the present invention, the acquiring of the material surface data information and the material status information at the discharge port, and performing analysis and processing to determine whether the discharge of the silo is abnormal, comprises the following steps:

[0093] Obtaining whether the discharge port is in a discharge state through the discharge valve 2;

[0094] Acquiring the material surface data information through the scanning device 1;

[0095] The material volume change or material shape information in the material surface data information is analyzed and processed within a preset time period to determine whether the material bin has abnormal discharge.

[0096] It should be noted that a material flow detection switch 4 may be provided at the discharge port, and the material flow detection switch 4 is used to detect the material flow information at the discharge port. At this time, the material surface data information, the material state information at the discharge port and the material flow information at the discharge port are analyzed and processed to determine whether the discharge of the silo is abnormal.

[0097] Specifically, the material flow detection switch 4 may be a microwave Doppler detection device, through which the material flow condition can be identified to detect the material flow information.

[0098] After the material flow detection switch 4 is provided at the discharge port, the material state information, material flow information and material surface data information at the discharge port can be analyzed and processed to determine whether there is abnormal discharge in the silo or at the discharge port.

[0099] Furthermore, historical material morphology information can also be pre-stored; the historical material morphology information includes at least one of a material shape reference curve and a material discharge reference speed when there is no material blockage. Among them, the historical material morphology information is standard material morphology information obtained by modeling and simulation using big data, and the standard material morphology information is material morphology information corresponding to the situation without any material shape abnormality or material discharge speed abnormality, and the standard material morphology information includes at least one of a material shape reference curve and a material discharge reference speed when there is no material blockage. At this time, by acquiring the material surface data information transmitted by the scanning device 1, the material surface data information is analyzed and compared with the material shape reference curve and the material discharge reference speed to determine whether the material bin has abnormal discharge within a preset time period.

[0100] The material discharge abnormality includes at least one of abnormal material surface shape and abnormal material discharge speed. The specific process of judging the abnormal material surface shape or abnormal material discharge speed can be referred to the monitoring system of the material silo discharge abnormality, which will not be repeated here.

[0101] The present invention combines the status information of the discharge valve 2, the historical material shape information or the material flow information at the discharge port with the material surface data information, analyzes and processes the material surface data information to determine whether the material surface shape is abnormal and analyzes and processes to determine whether the discharge speed is abnormal, and analyzes and determines whether the discharge in the discharge bin is abnormal by combining the material surface shape with the discharge speed. This analysis and judgment method can intelligently monitor whether the discharge in the bin is abnormal, and can analyze the specific circumstances of the abnormal discharge, thereby helping enterprises to timely understand the abnormal discharge situation and monitor the discharge process in real time, thereby minimizing the losses of the enterprises.

[0102] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings; however, the present invention is not limited to the specific details in the above embodiments; within the technical concept of the present invention, a variety of simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0103] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0104] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A silo discharge monitoring system, characterized in that: include: At least one scanning device, arranged on the top of the silo, at least used to scan the surface of the material to obtain material surface data information; A discharge valve, arranged at the discharge port at the bottom of the silo, for controlling the material status information at the discharge port; The data processing module is used to obtain the material surface data information and the material status information at the discharge port, and analyze and process the material surface data information and the material status information at the discharge port to determine whether the discharge of the silo is abnormal.

2. The silo discharge monitoring system according to claim 1, characterized in that: When the discharge valve is opened so that the material at the discharge port is in a discharge state, the data processing module analyzes and processes the material volume change or material surface shape information in the material surface data information within a preset time period to determine whether the discharge of the silo is abnormal; The material discharge abnormality includes at least one of abnormal material surface shape and abnormal material discharge speed.

3. The silo discharge monitoring system according to claim 2, characterized in that: The abnormal material surface shape includes at least one of material agglomeration, material wall hanging, material peak, material protrusion, material cross section, abnormal material stacking angle, and material arch.

4. The silo discharge monitoring system according to claim 3, characterized in that: The data processing module analyzes and processes that the material surface is continuous but the volume does not change within a preset time period, and then determines that material arching occurs in the silo.

5. The silo discharge monitoring system according to claim 2, characterized in that: When the discharge valve is opened so that the material at the discharge port is in a discharge state, the data processing module analyzes and processes the material volume change in the material surface data information within a preset time period to obtain a discharge speed; When the data processing module analyzes and processes that the discharge speed is abnormal and the discharge speed value is greater than 0, if the material surface shape in the material surface data information is normal, it is determined that material blockage occurs in the silo; Alternatively, when the data processing module analyzes and processes that the discharge speed is abnormal and the discharge speed is 0, it is determined that material arching, material cross-section or material empty bin occurs in the silo.

6. The silo discharge monitoring system according to claim 1, characterized in that: A material flow detection switch is provided at the material outlet, and the material flow detection switch is used to detect the material flow information at the material outlet; The data processing module analyzes and processes the material surface data information, the material status information at the material outlet, and the material flow information at the material outlet to determine whether the material bin discharges abnormally; When the discharge valve is opened so that the material at the discharge port is in a discharge state, When the material flow detection switch detects material flow data, the data processing module analyzes and processes the material volume change in the material surface data information within a preset time period to be less than or equal to the volume change threshold value. If the material surface shape in the material surface data information is normal, it is determined that material blockage occurs in the silo; When the material flow detection switch detects that there is no material flow data, the data processing module determines that material arching, material cross-section or material empty warehouse occurs in the silo.

7. The silo discharge monitoring system according to claim 1, characterized in that: It also includes a data storage module, which is connected to the data processing module and is used to store historical material morphology information; the historical material morphology information includes at least one of a material shape reference curve when there is no material blockage and a material discharge reference speed; The data processing module obtains the material surface data information transmitted by the scanning device, and analyzes and compares the material surface data information with the material shape reference curve and the material discharge reference speed to determine whether the discharge of the silo is abnormal.

8. The silo discharge monitoring system according to any one of claims 1 to 7, characterized in that: At least one of the scanning devices switches the working logic to the regional scanning logic according to the position of the discharge valve, and scans and detects the sub-material surface data information within the area where the discharge valve is located according to the regional scanning logic; Among them, when the discharge valve is opened so that the material at the discharge port is in a discharge state, the data processing module analyzes and processes the material volume change or material shape information in the sub-material surface data information within a preset time period to determine whether the discharge of the silo is abnormal.

9. The silo discharge monitoring system according to claim 1, characterized in that: The scanning device includes at least one of a 3D microwave radar, a 3D laser radar, a 2D microwave radar, a 2D laser radar, a single-point microwave radar, a single-point laser radar, and a binocular camera.

10. A method for monitoring material discharge from a silo, characterized in that: The steps include: Scanning the surface of the material by at least one scanning device disposed on the top of the silo to obtain material surface data information; The material status information at the discharge port is controlled by a discharge valve arranged at the discharge port at the bottom of the silo; Obtaining the material surface data information and the material status information at the discharge port, and performing analysis and processing to determine whether the discharge of the silo is abnormal; The step of acquiring the material surface data information and the material status information at the discharge port, and performing analysis and processing to determine whether the discharge of the silo is abnormal, includes the following steps: Obtaining whether the discharge port is in a discharge state through the discharge valve; Acquiring the material surface data information through the scanning device; The material volume change or material shape information in the material surface data information is analyzed and processed within a preset time period to determine whether the material bin has abnormal discharge.

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