Granary operation safety management system based on Internet of Things and linkage control

Abstract

The utility model discloses a granary operation safety management system based on internet of things and linkage control in the technical field of grain storage, which comprises a grain checking door, a grain blocking door and a grain outlet arranged on the grain blocking door, and further comprises a controller, the grain checking door is locked through a magnetic lock electrically connected with the controller, and the grain checking door is connected with the controller. A grain outlet opening and closing device electrically connected with the controller is arranged at the grain outlet, and the controller is configured to be that when the magnetic lock of the grain checking door is in an open state, the grain outlet opening and closing device cannot be opened; and when the grain outlet opening and closing device is in an open state, the magnetic lock cannot be opened. The magnetic lock is arranged on the grain checking door, the grain outlet opening and closing device is arranged at the grain outlet, and the magnetic lock and the grain outlet opening and closing device are connected through the controller, so that the magnetic lock and the grain outlet opening and closing device can be opened singly and cannot be opened at the same time, and grains cannot be discharged when people exist in the granary, and people cannot enter the granary when the grains are discharged. Therefore, safety accidents caused by grain collapse are avoided.

Description

Technical Field

[0001] This utility model relates to the field of grain storage technology, and in particular to a grain storage operation safety management system based on the Internet of Things and linkage control. Background Technology

[0002] Currently, most grain silos are equipped with inspection doors and grain retaining doors. Grain retaining doors are usually located at the bottom of the silo, serving as the main channel for grain entry and exit. Grain is first unloaded through the outlet on the retaining door. After the grain level drops, each section of the retaining door is opened sequentially from top to bottom until all grain near the retaining door has been discharged before entering the silo for further unloading. Inspection doors are usually located at the top of the silo, above the grain level. During grain storage, personnel need to enter the silo through the inspection door periodically to check the grain storage condition. Phosphine is periodically introduced to disinfect the grain during storage; unauthorized entry by inspection personnel could lead to poisoning. During grain unloading operations, it frequently happens that while grain is being discharged, inspection personnel enter the silo through the inspection door to check the situation. Because the internal stress conditions of the grain inside the silo are complex and unstable during unloading, there is a high risk of grain collapse burying personnel. In addition, during grain discharge, the area around the discharge port is subjected to significant impact from the grain, posing a risk of the grain gate bursting open and creating a major safety hazard. Utility Model Content

[0003] To overcome the aforementioned safety problems in existing grain storage and unloading operations, the technical problem to be solved by this utility model is to provide a grain storage operation safety management system based on the Internet of Things and linkage control that can improve the integrity of operations.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] The grain storage operation safety management system based on the Internet of Things and linkage control includes a grain inspection door installed on the top of the grain storage and a grain blocking door installed at the bottom of the grain storage, as well as a grain outlet installed on the grain blocking door. It also includes a controller. The grain inspection door is locked by a magnetic lock electrically connected to the controller. The grain outlet is equipped with a grain outlet opening and closing device electrically connected to the controller. The controller is configured such that when the magnetic lock of the grain inspection door is in the open state, the grain outlet opening and closing device cannot be opened; when the grain outlet opening and closing device is in the open state, the magnetic lock cannot be opened.

[0006] Furthermore, an operating screen electrically connected to the controller is installed at the bottom of the stairs between the ground and the grain inspection gate. The operating screen can display the opening and closing status of the magnetic lock and receive the information of the personnel entering the warehouse input by the inspection personnel. The magnetic lock can only be opened through the operating screen when the input information matches the information stored in the controller and there are no fewer than two inspection personnel.

[0007] Furthermore, two light gratings electrically connected to the controller are spaced apart near the upper part of the staircase. The controller is also configured to determine the number of people entering and exiting the grain inspection door and their direction of entry and exit based on the order in which the two light gratings are sensed. After the magnetic lock is opened, the magnetic lock will only close when the number of people exiting is the same as the number of people entering.

[0008] Furthermore, the grain inspection gate is also equipped with a gate opener electrically connected to the controller, which opens and closes synchronously with the magnetic lock.

[0009] Furthermore, the grain silo is equipped with an air detector electrically connected to the controller for detecting the phosphine and oxygen content in the silo. The air quality information detected by the air detector is displayed on the operation screen. The controller is also configured to open the magnetic lock via the operation screen only when the air quality in the silo meets the entry detection conditions.

[0010] Furthermore, the grain outlet opening and closing device includes an insert plate mechanism and an actuator. The insert plate mechanism includes insert plates that are slidably disposed in the grooves on both sides of the grain outlet of the grain gate. The actuator includes an electric cylinder disposed on the grain gate and electrically connected to the controller. The telescopic end of the electric cylinder is connected to the insert plate. The controller receives remote control from the remote controller to control the electric cylinder and realize the opening and closing of the grain outlet.

[0011] Furthermore, the insert plate mechanism also includes an insert plate bracket, which is fixed in the sliding grooves on both sides of the grain outlet of the grain gate by a locking member. The insert plate is slidably mounted on the insert plate bracket in the vertical direction. The drive mechanism also includes an electric cylinder bracket, the lower end of which is fixed to the top of the insert plate bracket by a locking member. The electric cylinder is mounted on the electric cylinder bracket.

[0012] Furthermore, the electric cylinder bracket is also equipped with a human body sensing module electrically connected to the controller. The controller is also configured to control the electric cylinder to open the insert plate only when the human body sensing module detects that there is no one within a one-meter radius when the grain outlet is closed; and to control the insert plate to close the grain outlet when the human body sensing module detects that someone enters within a one-meter radius when the grain outlet is open and discharging grain.

[0013] Furthermore, the power distribution terminal that supplies power to the grain dispensing equipment is electrically connected to the controller. The controller sets three levels of danger zones based on the different distances between personnel and the grain gate detected by the human body sensing module. When personnel are within five meters of the grain gate, a voice prompt will remind them to move away from the grain gate; when personnel are within three meters of the grain gate, a flashing light will be added to remind them to move away from the grain gate; when personnel are within one meter of the grain gate, the controller will control the power distribution terminal to disconnect the circuit of the grain dispensing equipment.

[0014] The beneficial effects of this utility model are as follows: By installing a magnetic lock on the grain inspection door and a grain outlet opening and closing device at the grain outlet, and using a controller to link the magnetic lock and the grain outlet opening and closing device, the two can only be opened individually and cannot be opened simultaneously. This ensures that grain cannot be released when there are people inside the warehouse, and that no one can enter the warehouse when grain is being released, thereby preventing safety accidents caused by grain collapse. By installing an air detector inside the warehouse and a light grating on the stairs, the safety of inspection personnel entering and exiting the grain warehouse is ensured and meets regulatory requirements, preventing situations such as personnel poisoning or being stranded inside the warehouse. By installing a human body sensing module on the grain outlet opening and closing device, it is ensured that no one is near the grain gate during the grain release process, preventing safety accidents caused by the grain gate collapsing. Attached Figure Description

[0015] Figure 1 This is a layout schematic diagram of the present invention;

[0016] Figure 2 This is a schematic diagram of the layout of the grain inspection gate of this utility model;

[0017] Figure 3 This is a schematic diagram of the layout of the grain outlet of this utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the grain outlet opening and closing device of this utility model.

[0019] The diagram is labeled as follows: 1-Grain bin, 2-Grain inspection gate, 3-Grain blocking gate, 4-Controller, 5-Grain outlet opening and closing device, 6-Step ladder, 7-Operating panel, 8-Grain discharging equipment, 9-Power distribution terminal, 11-Air detector, 21-Magnetic lock, 22-Gate opener, 31-Grain outlet, 51-Insert plate, 52-Electric cylinder, 53-Insert plate bracket, 54-Electric cylinder bracket, 55-Human body sensing module, 61-Light grating. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] It should be noted that if this utility model contains directional indicators such as up, down, left, right, front, and back, these terms are used to describe the relative positional relationships between components and are not specific references to the absolute positions of the components or the relationships between them. They are only used to explain the relative positional relationships and movement of the components in a specific posture. If the specific posture changes, the directional indicator will also change accordingly. If this utility model contains terms related to quantity such as "many," "multiple," or "several," these terms specifically refer to two or more.

[0022] like Figure 1-3As shown, the present invention provides a grain storage operation safety management system based on the Internet of Things and linkage control, including a grain inspection gate 2 installed at the top of the grain storage 1 and a grain blocking gate 3 installed at the bottom of the grain storage 1, as well as a grain outlet 31 installed on the grain blocking gate 3, and a controller 4. The grain inspection gate 2 is locked by a magnetic lock 21 electrically connected to the controller 4. The grain outlet 31 is provided with a grain outlet opening and closing device 5 electrically connected to the controller 4. The controller 4 is configured such that when the magnetic lock 21 of the grain inspection gate 2 is in the open state, the grain outlet opening and closing device 5 cannot be opened; when the grain outlet opening and closing device 5 is in the open state, the magnetic lock 21 cannot be opened. The controller 4 is existing technology. This application only integrates hardware devices such as the magnetic lock 21 and the grain outlet opening and closing device 5 with the controller 4 based on the functional requirements of control, and constructs the hardware execution logic according to conventional industrial control principles, without involving substantial modifications to the software program algorithm, control model, or electronic circuit principle. The Internet of Things (IoT) and linkage control refers to the hardware and software of the entire control system being connected to the management system via a network. Users can remotely view the data and equipment operating status of the entire system through computers, remote controls, or mobile apps. They can also control related equipment in a coordinated manner based on equipment status and business requirements, while simultaneously reporting relevant data to the backend management system. This utility model uses a magnetic lock 21 on the grain inspection gate 2 and a grain outlet opening / closing device 5 at the grain outlet 31. A controller 4 links the magnetic lock 21 and the grain outlet opening / closing device 5, ensuring that only one can be opened at a time, preventing simultaneous opening. This prevents grain from being released when someone is inside the storage area, and vice versa, thus avoiding safety accidents caused by grain collapse.

[0023] During grain inspection upon entry into the warehouse, only qualified personnel are permitted to enter. Therefore, to ensure standardized operation, an operation screen 7, electrically connected to a controller 4, is installed at the bottom of the ladder 6 between the ground and the grain inspection gate 2. The operation screen 7 displays the open / closed status of the magnetic lock 21 and receives personnel information input by the inspectors. The magnetic lock 21 can only be opened via the operation screen 7 when the input information matches the information stored in the controller 4, and at least two inspectors are present. The magnetic lock 21 is magnetic when energized, locking the grain inspection gate 2. Opening the magnetic lock 21 means disconnecting its circuit, releasing the lock on the grain inspection gate 2, after which the gate can be opened manually. Information input can be done via card swiping or facial recognition. Only after the information matches can the operation screen 7 be clicked to open the magnetic lock 21. The operation screen 7 simultaneously displays that the magnetic lock 21 is open, allowing the inspectors to manually open the grain inspection gate 2 and enter the warehouse.

[0024] To prevent inspection personnel from remaining inside the warehouse, two optical gratings 61, electrically connected to a controller 4, are spaced apart near the top of the staircase 6. The controller 4 is also configured to determine the number and direction of personnel entering and exiting the grain inspection gate 2 based on the sequence of sensing by the two optical gratings 61. After the magnetic lock 21 is opened, it will only close when the number of personnel exiting is equal to the number of personnel entering. The optical gratings 61 are through-beam optical grating sensors. The two sets of optical gratings 61 determine whether personnel are entering the warehouse upwards or leaving downwards by detecting the sequence in which they pass through the two sets of optical gratings 61, and simultaneously record the number of personnel passing through the optical gratings 61. When the number of people entering and exiting the warehouse is inconsistent, the alarm associated with the optical gratings 61 will play a voice prompt. Only after ensuring that the number of people entering and exiting the warehouse is consistent can the inspection personnel click on the operation screen 7 to close the magnetic lock 21, or the magnetic lock 21 will close automatically.

[0025] The grain inspection gate 2 is also equipped with a gate opener 22 electrically connected to the controller 4. The gate opener 22 opens and closes synchronously with the magnetic lock 21. The gate opener 22 is mainly set up to realize the automatic closing of the grain inspection gate 2 by utilizing the damping effect of the pull rod of the gate opener 22. At the same time, it can effectively resist the erroneous opening and closing of the gate caused by uncontrollable external factors such as strong winds, thereby improving the safety of the grain inspection gate 2.

[0026] Furthermore, to ensure the safety of inspection personnel entering grain silo 1, an air quality detector 11, electrically connected to a controller 4, is installed inside grain silo 1 to detect the phosphine and oxygen content within the silo. The air quality information detected by the air quality detector 11 is displayed on the operation screen 7. The controller 4 is also configured to allow the magnetic lock 21 to be opened via the operation screen 7 only when the air quality inside the silo meets the entry inspection conditions. If the oxygen concentration inside the silo is less than 19.5% or the phosphine concentration is greater than 0.2 ppm, a special warning will be displayed on the operation screen 7 using different colors, and the button to open the magnetic lock 21 will be disabled.

[0027] Regarding the safety management of grain dispensing operations, the solution adopted by this utility model is as follows: Figure 4As shown, the grain outlet opening and closing device 5 includes an insert plate mechanism and an actuator. The insert plate mechanism includes insert plates 51 slidably disposed in grooves on both sides of the grain outlet 31 of the grain gate 3. The actuator includes an electric cylinder 52 disposed on the grain gate 3 and electrically connected to the controller 4. The telescopic end of the electric cylinder 52 is connected to the insert plate 51. The controller 4 receives remote control to control the electric cylinder 52, thereby opening and closing the grain outlet 31. During grain storage, the electric cylinder 52 is de-energized and cannot extend or retract, ensuring that the insert plate 51 cannot be opened. When grain unloading is required, the grain outlet opening and closing device 5 is first powered on and connected to the control system of the controller 4, and associated with the magnetic lock 21 of the grain gate 2. After association, if the magnetic lock 21 is in the closed state, the grain outlet 31 can be opened by remote control to release grain. The reason for using remote control is to avoid safety accidents caused by the grain gate 3 being broken open due to changes in the force on the grain gate 3 during grain release.

[0028] Since many existing grain gates 3 have manually operated grain outlets 31, to avoid damaging the structure of the original grain gate 3 by adding a grain outlet opening / closing device 5, the insert plate mechanism also includes an insert plate bracket 53. The insert plate bracket 53 is fixed in the sliding grooves on both sides of the grain outlet 31 of the grain gate 3 by locking components. The insert plate 51 is slidably mounted on the insert plate bracket 53 in a vertical direction. The actuator also includes an electric cylinder bracket 54. The lower end of the electric cylinder bracket 54 is fixed to the top of the insert plate bracket 53 by locking components, and the electric cylinder 52 is mounted on the electric cylinder bracket 54. In this way, the entire grain outlet opening / closing device 5 is installed on the sliding groove of the grain outlet 31 by bolts and other locking components, which will not affect the structure of the grain gate 3 and ensure the safety of the grain gate 3.

[0029] To ensure that no one is around the grain gate 3 when discharging grain, a human body sensing module 55 electrically connected to the controller 4 is also installed on the electric cylinder bracket 54. The controller 4 is further configured to control the electric cylinder 52 to open the insert plate 51 only when the human body sensing module 55 detects that no one is within one meter of the grain outlet 31 when the grain outlet 31 is closed; and to control the insert plate 51 to close the grain outlet 31 when the human body sensing module 55 detects that someone has entered within one meter of the grain outlet 31 when the grain outlet 31 is open. The human body sensing module 55 can use existing infrared sensing modules or millimeter-wave radar to detect the distance of personnel to the grain gate 3 in real time, and only open the insert plate 51 after ensuring that the surrounding area is safe. At the same time, it can urgently close the grain outlet 31 when personnel enter the safe range.

[0030] Furthermore, since there are many supporting grain discharging devices 8 during grain discharging operations, in order to prevent the gas equipment from running idle after the grain outlet 31 is accidentally closed, the power distribution terminal 9 that supplies power to the grain discharging devices 8 can be electrically connected to the controller 4, such as... Figure 3, Figure 4 As shown, the controller 4 sets up three levels of danger zones based on the different distances between personnel and the grain gate 3 detected by the human body sensing module 55. Each zone is equipped with an alarm. When a person is within five meters of the grain gate 3, a voice prompt alerts them to move away. When a person is within three meters of the grain gate 3, a flashing light alerts them to move away. When a person is within one meter of the grain gate 3, the controller 4 controls the power distribution terminal 9 to disconnect the circuit of the grain dispensing equipment 8. The emergency stop controller in the power distribution terminal 9 can be composed of a 380V AC contactor and a wireless transmission relay. The wireless transmission relay has a receiver and a transmitter. The transmitter receives the signal input from the human body sensing module 55, and the receiver executes the corresponding switch signal output based on the transmitter signal, thereby controlling the AC contactor to connect or disconnect, thus achieving the purpose of controlling the power supply to the grain dispensing equipment 8.

Claims

1. A grain warehouse operation safety management system based on Internet of Things and linkage control, comprising a grain checking door (2) arranged at the top of a grain warehouse (1) and a grain blocking door (3) arranged at the bottom of the grain warehouse (1), and a grain outlet (31) arranged on the grain blocking door (3), characterized in that: The controller (4) is configured to, when the magnetic lock (21) of the grain checking door (2) is in an open state, the grain outlet opening and closing device (5) cannot be opened; when the grain outlet opening and closing device (5) is in an open state, the magnetic lock (21) cannot be opened.

2. The grain bin operation safety management system based on Internet of Things and linkage control according to claim 1, characterized in that: An operation screen (7) electrically connected with the controller (4) is arranged at the bottom of the step ladder (6) between the ground and the grain checking door (2), the operation screen (7) can display the opening and closing state of the magnetic lock (21) and receive the inputted warehouse entry personnel information of the detection personnel, and the magnetic lock (21) can be opened through the operation screen (7) only when the inputted information matches the information stored in the controller (4) and the number of detection personnel is not less than two. 3.The granary operation safety management system based on the Internet of Things and linkage control according to claim 2, characterized in that: Two optical gratings (61) electrically connected with the controller (4) are arranged at the position close to the upper end of the step ladder (6) in a spaced manner, and the controller (4) is further configured to judge the number and direction of personnel entering and exiting the grain checking door (2) according to the sequence of sensing of the two optical gratings (61), and the magnetic lock (21) is closed only when the number of personnel walking out is the same as the number of personnel walking in after the magnetic lock (21) is opened.

4. The grain bin operation safety management system based on Internet of Things and linkage control according to claim 2, characterized in that: The grain checking door (2) is further provided with a door opener (22) electrically connected with the controller (4), and the door opener (22) is synchronously opened and closed with the magnetic lock (21).

5. The grain bin operation safety management system based on Internet of Things and linkage control according to claim 2, characterized in that: The controller (4) is further configured to open the magnetic lock (21) through the operation screen (7) only when the air quality in the warehouse meets the warehouse entry detection condition. 6.The granary operation safety management system based on Internet of Things and linkage control according to any one of claims 1-5, characterized in that: The grain outlet opening and closing device (5) comprises a plug-in plate mechanism and an execution mechanism, the plug-in plate mechanism comprises a plug-in plate (51) slidingly arranged in a sliding groove on both sides of the grain outlet (31) of the grain blocking door (3), the execution mechanism comprises an electric cylinder (52) arranged on the grain blocking door (3) and electrically connected with the controller (4), the extension end of the electric cylinder (52) is connected with the plug-in plate (51), and the controller (4) receives remote control of a remote controller to control the electric cylinder (52) and realize the opening and closing of the grain outlet (31).

7. The grain bin operation safety management system based on Internet of Things and linkage control according to claim 6, characterized in that: The plug-in plate mechanism further comprises a plug-in plate support (53), the plug-in plate support (53) is fixed in the sliding groove on both sides of the grain outlet (31) of the grain blocking door (3) through locking members, the plug-in plate (51) is slidingly arranged on the plug-in plate support (53) in a vertical direction, and the execution mechanism further comprises an electric cylinder support (54), the lower end of the electric cylinder support (54) is fixed on the top of the plug-in plate support (53) through locking members, and the electric cylinder (52) is mounted on the electric cylinder support (54). 8.The granary operation safety management system based on the Internet of Things and linkage control according to claim 7, characterized in that: The electric cylinder support (54) is further provided with a human body sensing module (55) electrically connected with the controller (4), and the controller (4) is further configured to, when the grain outlet is in a closed state, only when the human body sensing module (55) detects that there is no person within a range of one meter, the electric cylinder (52) can be controlled to open the plugboard (51); when the grain outlet (31) is in an open grain discharging state, when the human body sensing module (55) detects that a person enters within a range of one meter, the plugboard (51) is controlled to close the grain outlet (31). 9.The granary operation safety management system based on the Internet of Things and linkage control according to claim 8, characterized in that: The power distribution terminal (9) for supplying power to the grain outlet device (8) is electrically connected with the controller (4), and the controller (4) sets three danger zones according to different distances between the personnel detected by the human body sensing module (55) and the grain blocking door (3), when the personnel are within five meters from the grain blocking door (3), the personnel are prompted to move away from the grain blocking door (3) through voice; when the personnel are within three meters from the grain blocking door (3), the personnel are prompted to move away from the grain blocking door (3) through light flashing; when the personnel are within one meter from the grain blocking door (3), the controller (4) controls the power distribution terminal (9) to disconnect the circuit of the grain outlet device (8).

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