Visual grain depot based on 4DS four-dimensional design

Abstract

The utility model relates to a visual grain depot based on 4DS four-dimensional design. The visual grain depot comprises a grain depot, a panoramic laser radar and a mobile detection device, a hollow grain discharging pipe is vertically arranged in the center of the grain depot; the panoramic laser radar faces downwards and is arranged at the top in the grain depot; the mobile detection device comprises a lifting platform, a non-contact flow meter and a material level meter; the lifting platform is arranged on the grain discharging pipe and can move up and down along the grain discharging pipe; the non-contact type flow meters are arranged on the lifting table up and down, and the included angle between the upper non-contact type flow meter and the lifting table is larger than that between the lower non-contact type flow meter and the lifting table. And the level gage is downwards arranged on the lifting platform. The utility model aims to provide a visual grain depot with an acquisition unit capable of acquiring dynamically changing parameters of a grain cone and a grain flow, which can effectively solve the problem that an existing grain depot acquisition module is difficult to acquire the dynamically changing parameters of the grain flow and the grain cone in real time. Therefore, visual model animations of the grain cone and the grain flow can be created based on the 4DS four-dimensional technology.

Description

Technical Field

[0001] The utility model relates to the technical field of grain depot management, in particular to a visualized grain depot based on 4DS four-dimensional design. Background Art

[0002] By integrating sensor data, IoT technology and big data analysis, 4DS technology can create a dynamic, real-time changing four-dimensional model. This technology can not only show the three-dimensional shape and spatial layout of objects, but also show their changes over time, thus realizing real-time monitoring and management of complex systems.

[0003] In the prior art, for example, the invention patent with patent number CN117391586A discloses a three-dimensional digital management system for a grain warehouse based on digital twins. The data information of the grain warehouse equipment is collected through a data acquisition module, and the data information is sent to the three-dimensional digital twin visualization system platform. The three-dimensional digital twin visualization system platform uses three-dimensional modeling software or virtual reality technology to create a virtual space for the grain warehouse, and integrates virtual scene roaming technology so that users can roam freely in the virtual grain warehouse and view various equipment and monitoring points.

[0004] In grain depot management, grain cones and grain flows are formed when grain is fed in and discharged from the depot. Grain cones refer to the conical structures formed by grain accumulation in the depot. Grain flow refers to the flow of grain along the grain cone during the process of feeding or discharging grain. The shape and height of the grain cone directly affect the storage capacity and ventilation effect of the depot. During the process of feeding and discharging grain, grain flow will cause stress concentration in certain parts of the depot, which may increase the stress of the local structure and affect the structural stability of the depot. Effectively obtaining data on grain flow and grain cones formed when feeding and discharging grain from the depot is of great significance to grain depot management.

[0005] Although sensors and monitoring equipment are widely used in grain storage management to obtain information inside the grain warehouse, and three-dimensional models are established based on the collected information for display to achieve an intuitive visual effect, the existing sensors and monitoring equipment are mainly focused on environmental parameters such as temperature, humidity, and gas, and the established three-dimensional models are still mainly static. In terms of monitoring and displaying dynamically changing grain flows and grain cones, there are still problems such as difficulty in dynamic data collection and difficulty in displaying dynamic features.

[0006] Based on 4DS technology, although time stamps can be introduced to directly display the dynamic situation of grain flow and grain cone in an animated manner, the existing grain storage collection modules still have the problem of being difficult to adapt to the detection of dynamically changing grain cones and grain flows, resulting in the collected data being difficult to meet the requirements of 4DS technology to generate a four-dimensional animation model of grain flow and grain cones.

[0007] Based on this, it is necessary to study the visualized grain warehouse based on 4DS four-dimensional design. Utility Model Content

[0008] In view of this, the purpose of the utility model is to provide a visual grain depot with a collection unit capable of obtaining the dynamically changing parameters of grain cones and grain flows, which can effectively solve the problem that the existing grain depot collection modules are difficult to obtain the dynamically changing parameters of grain flows and grain cones in real time, so as to create a visual model animation of grain cones and grain flows based on 4DS four-dimensional technology.

[0009] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0010] Visualized grain warehouse based on 4DS four-dimensional design, including grain warehouse, panoramic laser radar and mobile detection device;

[0011] A hollow grain discharge pipe is vertically arranged in the center of the grain depot, the upper end of the grain discharge pipe is connected to the grain inlet, the lower end of the grain discharge pipe is connected to the grain discharge port, and a plurality of guide ports connected to the grain depot are vertically opened on the side wall of the grain discharge pipe;

[0012] The panoramic laser radar faces downward and is arranged on the top of the grain warehouse;

[0013] The mobile detection device includes a lifting platform, a non-contact flow meter and a material level meter;

[0014] The lifting platform is arranged on the grain discharging pipe and can move up and down along the grain discharging pipe;

[0015] The non-contact flow meter is arranged on a lifting platform, and two groups of non-contact flow meters are arranged in upper and lower positions, and the upper and lower positions of the two groups of non-contact flow meters correspond to each other, and the two groups of non-contact flow meters are oriented in a vertical plane, and the angle between the upper non-contact flow meter and the lifting platform is greater than the angle between the lower non-contact flow meter and the lifting platform;

[0016] The material level meter is arranged downward on the lifting platform.

[0017] Furthermore, the mobile detection device also includes a winch and a sling;

[0018] The lifting platform is a sleeve structure adapted to the grain discharge pipe, and the lifting platform is slidably sleeved on the grain discharge pipe;

[0019] The winch is arranged on the upper part of the grain discharge pipe and corresponds to the upper and lower positions of the lifting platform.

[0020] The upper end of the sling is wound on a winch, and the lower end of the sling is fixed on a lifting platform.

[0021] Furthermore, the mobile detection device also includes an angle adjustment mechanism, which includes a fixed seat, a rotating seat, a rotating shaft and a motor;

[0022] The fixing seat is fixed on the lifting platform;

[0023] The rotating seat is arranged on the fixed seat by rotating the rotating shaft up and down, and the rotating shaft is drivingly connected with the motor; the motor is fixedly connected with the fixed seat;

[0024] The non-contact flow meter is fixed on the rotating seat.

[0025] Furthermore, each group of non-contact flow meters includes a plurality of non-contact flow meters arranged circumferentially.

[0026] Furthermore, the two groups of non-contact flow meters include one or more of a laser Doppler flow meter, an ultrasonic flow meter, and a radar flow meter.

[0027] Furthermore, a plurality of pressure sensors are provided on the bottom and inner wall of the grain storage.

[0028] The beneficial effects of the above technical solution are:

[0029] The utility model uses a panoramic laser radar on the top of the grain warehouse to obtain the geometric arrangement of grain cones at different times. Combined with the three-dimensional shape of the grain cone, the lifting platform moves downward to the top of the grain cone and uses a level meter to keep it on the grain cone. The upper and lower two sets of non-contact tachometers on the lifting platform are used to detect the flow velocity of the same grain flow at different positions, so as to calculate the velocity parameters, acceleration parameters, etc. of the grain flow, and apply the flow velocity and acceleration parameters to the three-dimensional model, so as to dynamically simulate the change process of the grain flow and the grain cone, and generate a real-time grain flow distribution map. Based on 4DS technology, the three-dimensional model and flow velocity and acceleration data at different time points are integrated to form time series data, record the dynamic changes of the grain cone shape and grain flow speed inside the granary, and use the time series data to generate a dynamic three-dimensional model containing the time dimension, so as to visualize the real-time changes of the grain cone and the grain flow, which is helpful to intuitively observe the dynamic changes of the grain cone and the grain flow, so as to facilitate data analysis and trend prediction, support management personnel to make scientific decisions, and optimize the granary management strategy. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a plane schematic diagram of the utility model when feeding grain;

[0031] Figure 2 for Figure 1 The enlarged view of the part in the middle circle;

[0032] Figure 3 It is a plane schematic diagram of the utility model when releasing grain;

[0033] Figure 4 It is a three-dimensional schematic diagram of the angle adjustment mechanism.

[0034] Figure numerals: 1 is a grain depot, 2 is a panoramic laser radar, 3 is a grain discharge pipe, 4 is a lifting platform, 5 is a non-contact flow meter, 6 is a material level meter, 7 is a winch, 8 is a sling, 9 is a fixed seat, 10 is a rotating seat, 11 is a rotating shaft, 12 is a motor, 13 is a pressure sensor, 14 is a grain cone, 101 is a grain inlet, 102 is a grain discharge port, and 301 is a material guide port. DETAILED DESCRIPTION

[0035] The utility model is further described in detail below with reference to the accompanying drawings and specific implementation methods:

[0036] The present embodiment aims to provide a visualized grain depot based on 4DS four-dimensional design, which is mainly used to obtain the dynamic changes of the grain cone 14 and the grain flow when the grain depot 1 is taking in and releasing grain, and aims to solve the problem that the existing grain depot 1 collection module is difficult to obtain the parameters of the dynamically changing grain flow and grain cone 14 in real time.

[0037] Visual grain warehouse based on 4DS four-dimensional design, such as Figure 1 , including a grain depot 1, a panoramic laser radar 2 and a mobile detection device; a hollow grain discharge pipe 3 is vertically fixedly arranged in the center of the grain depot 1, the upper end of the grain discharge pipe 3 is connected to the grain inlet 101, the lower end of the grain discharge pipe 3 is connected to the grain discharge port 102, and the side wall of the grain discharge pipe 3 is vertically spaced apart with a plurality of guide ports 301 connected to the grain depot 1, such as Figure 1 During the grain feeding process of the grain depot 1, the rice enters the grain discharge pipe 3 from the grain feeding port 101, and flows into the grain bin from the guide port 301 to form a grain flow, which accumulates in the middle of the grain depot 1 and forms a conical grain cone 14. Due to the potential energy, the grain flow slides along the surface of the grain cone 14 toward the side of the grain depot 1, so that the grain cone 14 maintains a conical shape and continues to increase in height. On the contrary, if Figure 3 When releasing the grain, the rice enters the grain release pipe 3 from the guide port and is discharged from the lower grain release port 102, forming a grain flow that gathers from both sides to the middle, and forms an inverted conical grain cone 14 with a low middle and high sides.

[0038] The panoramic laser radar 2 faces downward and is set on the top of the grain warehouse 1; the panoramic laser radar 2 is hoisted on the top of the grain warehouse 1. The panoramic laser radar 2 is provided with three groups to form a visual field covering the inside of the grain warehouse 1, which is mainly used to obtain the geometric shape of the grain cone 14, judge the height of the material level, and provide image parameters for the three-dimensional model. In other embodiments, it can also be combined with a depth camera to further enhance the performance.

[0039] The mobile detection device includes a lifting platform 4, a non-contact flow meter 5 and a level meter 6; the lifting platform 4 is arranged on the grain discharge pipe 3 and can move up and down along the grain discharge pipe 3; the mobile detection device also includes a winch 7 and a sling 8, and a rope sling mechanism is used to realize the up and down movement of the lifting platform 4; the lifting platform 4 is a sleeve structure adapted to the grain discharge pipe 3, and the lifting platform 4 is slidably mounted on the grain discharge pipe 3; the winch 7 is arranged on the upper part of the grain discharge pipe 3 and corresponds to the upper and lower positions of the lifting platform 4, the upper end of the sling 8 is wound on the winch 7, and the lower end of the sling 8 is fixed on the lifting platform 4. In other embodiments, the lifting platform 4 can also adopt a screw mechanism or the like to realize up and down movement.

[0040] The non-contact flowmeter 5 is arranged on the lifting platform 4. There are two groups of non-contact flowmeters 5 arranged up and down. The upper and lower positions of the two groups of non-contact flowmeters 5 correspond to each other. The two groups of non-contact flowmeters 5 are oriented in a vertical plane. The angle between the upper non-contact flowmeter 5 and the lifting platform 4 is greater than the angle between the lower non-contact flowmeter 5 and the lifting platform 4, so as to detect the flow velocity of the same grain flow at different positions, so as to calculate the speed change and acceleration of the grain flow. For example, when feeding grain, the speed of the same unit of rice in the middle of the grain cone 14 can be detected by the non-contact flowmeter 5 located below, and when it slides to the side along the surface of the grain cone 14, its speed can be detected by the non-contact flowmeter 5 located above. The speed of the two points can be calculated to obtain parameters such as acceleration. The data can be processed to restore the motion trajectory of the grain flow and predict the motion trend of the grain flow, and the motion trend can be compared with each time point.

[0041] The two groups of non-contact flowmeters 5 are both ultrasonic flowmeters, and laser Doppler flowmeters, radar flowmeters, etc. can also be used, aiming to measure the flow velocity of the grain flow by non-contact methods. In addition, according to the actual size of the grain depot 1 and the position of the non-contact flowmeter 5 from the actual measurement point, the two groups of non-contact flowmeters 5 can also use different types of flowmeters according to actual conditions. Since the surface of the grain cone 14 is conical, each group of non-contact flowmeters 5 includes a plurality of non-contact flowmeters 5 arranged circumferentially to cover the surface of the grain cone 14.

[0042] The material level meter 6 is set downward on the lifting platform 4. The material level meter 6 adopts a laser ranging type material level meter 6, which is intended to measure the distance between the lifting platform 4 and the material level, so that the lifting platform 4 can be maintained at a specific height above the grain cone 14, so that the non-contact flow meter 5 can measure the grain flow on the surface of the grain cone 14.

[0043] In order to facilitate the adjustment of the angle of the non-contact flow meter 5, so as to ensure that the non-contact flow meter 5 can smoothly detect the flow rate of the grain flow, as shown in FIG. Figure 4The mobile detection device also includes an angle adjustment mechanism, which includes a fixed seat 9, a rotating seat 10, a rotating shaft 11 and a motor 12; the fixed seat 9 is fixed on the lifting platform 4; the rotating seat 10 is arranged on the fixed seat 9 for rotating up and down through the rotating shaft 11, and the rotating shaft 11 is transmission-connected to the motor 12; the motor 12 is fixedly connected to the fixed seat 9; the non-contact flowmeter 5 is fixed on the rotating seat 10; the motor 12 is control-connected to the control platform, and the motor 12 adopts a steering gear, and the angle between the non-contact flowmeter 5 and the lifting platform 4 is controlled by controlling the rotation angle of the motor 12.

[0044] A plurality of pressure sensors 13 are provided at the bottom and inner wall of the grain depot 1, which are mainly used to detect the stress effect of grain flow on the grain depot 1. Since the grain flow will generate stress concentration in certain parts of the grain depot 1 during the process of feeding and releasing grain, it may cause the stress of the local structure to increase, affecting the structural stability of the grain depot 1. The stress effect of grain flow on the grain depot 1 is directly detected and identified by the pressure sensor 13, and represented in the four-dimensional model, which is conducive to intuitive observation and decision-making by technicians.

[0045] In this embodiment, the lifting platform 4 is located at the top of the grain depot 1 in the default state. When grain is being fed or discharged and the grain cone 14 and grain flow of the grain depot 1 need to be detected, the control platform moves the lifting platform 4 to the top of the current grain cone 14 according to the data provided by the panoramic lidar 2, and maintains it at a specific height above the grain cone 14 in combination with the material level meter 6. The specific height is mainly to ensure that the non-contact flowmeter 5 can smoothly detect the surface of the grain flow, especially the detection point relative to the non-contact flowmeter 5 located above. The specific data of the specific height needs to be determined in combination with the size of the grain depot 1, the shape of the grain cone 14 and the detection point of the non-contact flowmeter 5, and different specific heights are required for feeding and discharging grain.

[0046] In this embodiment, the panoramic laser radar 2 is installed on the top of the grain depot 1 to scan the interior of the grain depot in real time and obtain the three-dimensional shape and height data of the grain cone 14. These data form an accurate three-dimensional point cloud. The control platform uses the panoramic laser radar 2 and data to reconstruct the three-dimensional model inside the grain depot 1 through the point cloud processing algorithm, display the shape and height of the grain cone 14, and describe the geometric form of the grain cone 14. The upper and lower groups of non-contact flow meters 5 measure the flow velocity of the same grain flow at different positions in real time. By comparing the flow velocity changes at different positions, the acceleration parameters of the grain flow are calculated. The control platform integrates the three-dimensional model and the flow velocity and acceleration data at different time points to form time series data. These data record the dynamic changes of the shape of the grain cone 14 and the grain flow speed inside the granary. Finally, the control platform uses the time series data to generate a dynamic three-dimensional model including the time dimension, that is, a four-dimensional model, to display the real-time changes of the grain cone 14 and the grain flow. The utility model aims to provide a visual grain storehouse 1 with a collection unit capable of acquiring parameters of dynamic changes of a grain cone 14 and a grain flow. As for the control platform and the application of 4DS technology, existing technologies are adopted and will not be described in detail here.

Claims

1. The visual grain warehouse based on 4DS four-dimensional design is characterized by: It includes a grain depot (1), a panoramic laser radar (2) and a mobile detection device; A hollow grain discharge pipe (3) is vertically arranged at the center of the grain depot (1); the upper end of the grain discharge pipe (3) is connected to the grain inlet (101); the lower end of the grain discharge pipe (3) is connected to the grain discharge port (102); and a plurality of material guide ports (301) connected to the grain depot (1) are vertically opened on the side wall of the grain discharge pipe (3); The panoramic laser radar (2) faces downward and is arranged on the top of the grain warehouse (1); The mobile detection device comprises a lifting platform (4), a non-contact flow meter (5) and a material level meter (6); The lifting platform (4) is arranged on the grain discharge pipe (3) and is capable of moving up and down along the grain discharge pipe (3); The non-contact flow meter (5) is arranged on the lifting platform (4), and two groups of non-contact flow meters (5) are arranged in an upper and lower position, and the upper and lower positions of the two groups of non-contact flow meters (5) correspond to each other. The two groups of non-contact flow meters are oriented in a vertical plane, and the angle between the upper non-contact flow meter and the lifting platform (4) is greater than the angle between the lower non-contact flow meter and the lifting platform (4); The material level meter (6) is arranged downward on the lifting platform (4).

2. The visualized grain depot based on 4DS four-dimensional design according to claim 1 is characterized by: The mobile detection device also includes a winch (7) and a sling (8); The lifting platform (4) is a sleeve structure adapted to the grain discharge pipe (3), and the lifting platform (4) is slidably sleeved on the grain discharge pipe (3); The hoist (7) is arranged on the upper part of the grain discharge pipe (3) and corresponds to the upper and lower positions of the lifting platform (4). The upper end of the sling (8) is wound on the hoist (7), and the lower end of the sling (8) is fixed on the lifting platform (4).

3. The visualized grain depot based on 4DS four-dimensional design according to claim 1 is characterized by: The mobile detection device further comprises an angle adjustment mechanism, which comprises a fixed seat (9), a rotating seat (10), a rotating shaft (11) and a motor (12); The fixing seat (9) is fixed on the lifting platform (4); The rotating seat (10) is arranged on the fixed seat (9) to rotate up and down via a rotating shaft (11); the rotating shaft (11) is drivingly connected to the motor (12); and the motor (12) is fixedly connected to the fixed seat (9); The non-contact flow meter (5) is fixed on the rotating seat (10).

4. The visualized grain depot based on 4DS four-dimensional design according to claim 1 is characterized by: Each group of non-contact flow meters (5) comprises a plurality of non-contact flow meters (5) arranged circumferentially.

5. The visualized grain depot based on 4DS four-dimensional design according to claim 1 is characterized by: The two groups of non-contact flow meters (5) include one or more of a laser Doppler flow meter, an ultrasonic flow meter, and a radar flow meter.

6. The visualized grain depot based on 4DS four-dimensional design according to claim 1 is characterized by: A plurality of pressure sensors (13) are provided on the bottom and inner wall of the grain storage (1).

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