Safe operation control device for grain in and out of barn

Abstract

The utility model relates to the technical field of grain operation control, in particular to a safe operation control device for grain warehousing and warehousing. The safe operation control device comprises a belt conveyor electric control box, an intelligent integrated control terminal, a wireless communication module and a voice broadcast module. A belt motor M1, a manual start button, a manual stop button, a switch control circuit and a plurality of sensors are arranged in the belt conveyor electric control box. The intelligent integrated control terminal comprises a processor, a shutdown relay and a starting relay. During application, the manual stop button is in a normally closed state, and the manual start button is in a normally open state. When the manual start button is powered on, the switch control circuit can enable the belt motor M1 and the three-phase alternating current to be mutually conducted, so that the belt motor M1 starts to operate. The sensor monitors the operation condition and feeds back the operation condition to the processor, the processor can control the starting relay and the stopping relay to switch the opening and closing states, and therefore automatic starting and stopping control over the belt motor M1 can be achieved.

Description

Technical Field

[0001] This application relates to the field of grain operation control technology, specifically to a grain entry and exit warehouse safety operation control device. Background Technology

[0002] In the grain storage and transshipment sector, mobile conveyor equipment (such as truck-mounted bulk receiving machines, mobile telescopic conveyors, and scraper unloaders) is widely used in grain loading and unloading operations due to its flexible deployment capabilities. These machines primarily use conveyor belts to load, clean, and transfer grain. The safety, response speed, and intelligence level of their start-stop control directly affect operational efficiency and operator safety. Traditional belt control technology mainly relies on manual operation and simple electrical interlocks, which has the following limitations:

[0003] 1. Insufficient operational safety and environmental adaptability:

[0004] Traditional electrical control systems require operators to frequently approach the equipment to directly control the belt start and stop via physical buttons. In dynamic operation scenarios with mobile equipment (such as the telescopic adjustment of loading machines or the position switching of steering conveyors), operators may be forced into confined spaces or high platforms, significantly increasing the risk of electric shock and mechanical crushing. Furthermore, when equipment is moving, it is susceptible to environmental factors such as dust and humidity, and manual buttons are prone to poor contact or wire wear, leading to control failure.

[0005] 2. Weak operational condition perception and closed-loop control capabilities:

[0006] Existing systems often lack real-time monitoring of belt operating status (such as belt misalignment, material blockage, and overload) and dynamic acquisition of environmental parameters (such as temperature and vibration). For example, if the belt load suddenly changes during vibrating screening of a mobile cleaning screen, traditional relay control cannot cut off the power in time, which can easily lead to motor burnout or belt breakage. Although some improved solutions add sensors, the signal processing is scattered and cannot achieve adaptive start-stop decisions based on multi-source data (such as current fluctuations and speed deviations).

[0007] 3. Lack of remote interaction and collaborative control:

[0008] Mobile equipment often requires multi-point coordinated operation (such as the linkage between telescopic conveyors and grain unloaders), but traditional control boxes only support local operation and cannot remotely synchronize status or centrally schedule via wireless communication. When the equipment is distributed, operators need to travel between each piece of equipment to manually start and stop it, which is inefficient and prone to errors. At the same time, there is a lack of remote alarm mechanisms for sudden failures (such as belt jamming in hydraulic silo loading machines), delaying emergency response.

[0009] 4. Mismatch between human-computer interaction and status feedback in mobile scenarios:

[0010] In noisy and dusty mobile work environments, the visual feedback from traditional indicator lights and displays is easily interfered with, making it difficult for operators to perceive changes in equipment status in a timely manner (such as belt slippage warnings). Especially when operating at heights or in confined spaces, the lack of proactive prompts such as voice broadcasts further exacerbates the risk of misjudgment. For example, if the belt of a mobile aerial work platform stops abnormally during extension or retraction, relying solely on visual signals can easily be overlooked by operators, leading to secondary operational accidents.

[0011] To address the aforementioned issues, existing technologies are insufficient to meet the core requirements of automatic control for mobile grain conveying equipment. There is an urgent need for a control device integrating sensing, wireless communication, and multimodal interaction to adapt to the safety and efficiency improvement demands in complex and dynamic operating scenarios. How to simultaneously perform manual and automatic control of the conveyor belt motor's start and stop is a technical problem that needs to be solved in this field. Utility Model Content

[0012] In view of this, this application provides a safety operation control device for grain entering and leaving the warehouse, which can manually and automatically control the start and stop of the belt motor of the conveyor belt.

[0013] Firstly, this application provides a grain storage safety operation control device, comprising a belt conveyor electrical control box, an intelligent integrated control terminal, a wireless communication module, and a voice broadcast module; the belt conveyor electrical control box includes a belt motor M1, a manual start button, a manual stop button, and a switch control circuit; the belt conveyor electrical control box also includes multiple sensors; the belt motor M1 is connected to three-phase AC power; part of the switch control circuit is connected in series between the belt motor M1 and the three-phase AC power; the manual stop button, the manual start button, and part of the switch control circuit are sequentially connected in series between the live wire and the ground wire; the intelligent integrated control... The terminal includes a processor, a stop relay, and a start relay. The processor includes multiple data input serial ports, multiple data output serial ports, a wireless communication serial port, and a voice communication serial port. The signal terminal of the sensor is connected to the data input serial port. The stop relay is connected to the data output serial port, and the start relay is connected to the data output serial port. The stop relay is connected in series between the manual stop button and the manual start button, and the start relay is connected in parallel across the two ends of the manual start button. The wireless communication module is connected to the wireless communication serial port, and the voice broadcast module is connected to the voice communication serial port.

[0014] In conjunction with the first aspect, in one possible implementation, the switch control circuit includes a three-stage switch KM1 and a contactor coil KM1 that are matched with each other. The three-stage switch KM1 is connected in series between the belt motor M1 and the three-phase AC power supply, and the contactor coil KM1 is connected in series between the manual start button and the ground wire. The belt motor control box also includes a reset switch, which is connected in parallel across the manual start button.

[0015] In conjunction with the first aspect, in one possible implementation, the belt conveyor electrical control box further includes a first thermal overload relay RJ1 and a second thermal overload relay RJ2, wherein the first thermal overload relay RJ1 is connected in series between the belt motor M1 and the three-phase AC power supply, and the second thermal overload relay RJ2 is connected in series between the manual start button and the ground wire.

[0016] In conjunction with the first aspect, one possible implementation further includes a power supply module, which comprises a voltage regulator chip U39, a voltage regulator chip U17, a fuse F1, capacitors C56 and C55, a diode D2, an inductor L1, capacitors C57, C58, C1, C14, C3, and C12; the voltage regulator chip U39 includes a first VIN terminal, a first GND terminal, an EN terminal, a first OUT terminal, and an FT terminal, with the first GND terminal and the EN terminal both grounded; a +12V power supply is connected to the first VIN terminal, the fuse F1 is connected in series between the +12V power supply and the first VIN terminal, the capacitor C56 is connected in parallel between the first VIN terminal and the first GND terminal, and the capacitor C55 is connected in parallel between the first VIN terminal and the first GND terminal; the cathode of the diode D2 is connected to the first OUT terminal, and the diode D2... The anode of the diode is grounded; the inductor L1 and the capacitor C57 are connected in series and then in parallel across the diode D2; the capacitor C58 is connected in parallel across the capacitor C57; the capacitor C1 is connected in parallel across the capacitor C57; the capacitor C14 is connected in parallel across the capacitor C57; the FT terminal is connected between the inductor L1 and the capacitor C57; a +5V power supply is led out from the line between the FT terminal and the capacitor C57; the voltage regulator chip U17 includes a second VIN terminal, a second GND terminal, and a second OUT terminal; the second GND terminal is grounded; the +5V power supply is connected to the second VIN terminal; the capacitor C3 is connected in parallel across the second OUT terminal and the second GND terminal; the capacitor C12 is connected in parallel across the capacitor C3; a +3.3V power supply is led out from the second OUT terminal and the capacitor C3; the +3.3V power supply is connected to the power supply terminal of the processor.

[0017] In conjunction with the first aspect, in one possible implementation, the belt conveyor electrical control box further includes an optocoupler U6, a capacitor C60, and an inductor L2; the optocoupler U6 includes a first pin, a second pin, a third pin, and a fourth pin; the signal terminal of the sensor is connected to the first pin of the optocoupler U6; the capacitor C60 is connected in parallel between the first and second pins of the optocoupler U6; a -24V power supply is connected between the capacitor C60 and the second pin of the optocoupler U6; the third pin of the optocoupler U6 is connected to the data input serial port; the fourth pin of the optocoupler U6 is grounded; one end of the inductor L2 is connected to a +3.3V power supply; and the other end of the inductor L2 is connected between the third pin of the optocoupler U6 and the data input serial port.

[0018] In conjunction with the first aspect, in one possible implementation, the sensor is selected from one of the following: motor overload sensor, speed sensor, misalignment sensor, shaft temperature sensor, human proximity sensor, noise sensor, start switch sensor, and emergency stop switch sensor.

[0019] In conjunction with the first aspect, in one possible implementation, the wireless communication module is a 433 wireless module, which includes a communication module ground terminal, a communication module VCC terminal, a communication module RX terminal, and a communication module TX terminal. The wireless communication serial port includes PA9 and PA10 terminals. The communication module ground terminal is grounded, the communication module VCC terminal is connected to a +3.3V power supply, the communication module RX terminal is connected to the PA9 terminal, and the communication module TX terminal is connected to the PA10 terminal.

[0020] In conjunction with the first aspect, one possible implementation further includes a transceiver IC7 module. The voice broadcast module includes a broadcast ground terminal, a broadcast VCC terminal, a broadcast audio A terminal, and a broadcast audio B terminal. The transceiver IC7 module includes a transceiver RO terminal, a transceiver RE terminal, a transceiver DE terminal, a transceiver DI terminal, a transceiver VCC terminal, a transceiver audio B terminal, a transceiver audio A terminal, and a transceiver ground terminal. The voice communication serial port includes PB3 terminals, PB6 terminals, and PD2 terminals. Both the broadcast ground terminal and the transceiver ground terminal are grounded. The transceiver RO terminal is connected to the PB3 terminal, the transceiver RE terminal is connected to the PB6 terminal, and the transceiver DE terminal is connected to the PB6 terminal. The transmit DI terminal is connected to the PD2 terminal. The transmit / receive VCC terminal is connected to a capacitor C2, the other end of which is grounded. A +3.3V power supply is connected between the transmit / receive VCC terminal and the capacitor C2. The transmit / receive audio B terminal is connected to the broadcast audio B terminal. The transmit / receive audio A terminal is connected to the broadcast audio A terminal. The broadcast VCC terminal is connected to a +3.3V power supply. An inductor R46 is connected in parallel between the transmit / receive audio B terminal and the transmit / receive audio A terminal. A TVS diode D18 is also connected to the transmit / receive audio A terminal, the other end of which is grounded. A TVS diode D19 is also connected to the transmit / receive audio B terminal, the other end of which is grounded.

[0021] In conjunction with the first aspect, one possible implementation further includes an optocoupler U5 and a first PNP transistor. The optocoupler U5 includes a first pin, a second pin, a third pin, and a fourth pin. The data output serial port includes a PB15 terminal, which is connected to the first pin of the optocoupler U5. An inductor R23 is connected in series between the PB15 terminal and the first pin of the optocoupler U5. The second pin of the optocoupler U5 is grounded, and the third pin of the optocoupler U5 is connected to the first terminal of the first PNP transistor. Connecting the optocoupler U5, an inductor R20 is connected in series between the third pin and the first PNP transistor. The third terminal of the first PNP transistor is connected to a -24V power supply. The stop relay includes a stop relay switch and a stop relay coil. The stop relay switch is connected in series between the manual stop button and the manual start button. One end of the stop relay coil is connected to the second terminal of the first PNP transistor, and the other end of the stop relay coil is connected to a +24V power supply. A diode D6 is also connected in parallel across the two ends of the stop relay coil.

[0022] In conjunction with the first aspect, one possible implementation further includes an optocoupler U13 and a second PNP transistor. The optocoupler U13 includes a first pin, a second pin, a third pin, and a fourth pin. The data output serial port includes a PB6 terminal, which is connected to the first pin of the optocoupler U13. An inductor R66 is connected in series between the PB6 terminal and the first pin of the optocoupler U13. The second pin of the optocoupler U13 is grounded, and the third pin of the optocoupler U13 is connected to the second PNP transistor. The first end of the tube is connected, and an inductor R60 is connected in series between the third pin of the optocoupler U13 and the second PNP transistor. The third end of the second PNP transistor is connected to a -24V power supply. The start relay includes a start relay switch and a start relay coil. The start relay switch is connected in parallel across the two ends of the manual start button. One end of the start relay coil is connected to the second end of the second PNP transistor. The other end of the start relay coil is connected to a +24V power supply. A diode D22 is also connected in parallel across the two ends of the start relay coil.

[0023] In this application, the manual stop button is normally closed, and the manual start button is normally open. When the manual start button is energized, the switch control circuit enables the belt motor M1 to conduct to the three-phase AC power supply, thereby starting the belt motor M1. Sensors monitor the operating conditions and feed them back to the processor, which can control the start and stop relays to switch their on / off states, thus achieving automated start and stop control of the belt motor M1. Attached Figure Description

[0024] Figure 1 The figure shown is a schematic diagram of the system structure of a grain entry and exit safety operation control device provided in an embodiment of this application.

[0025] Figure 2 The diagram shows the circuit structure of the power supply module.

[0026] Figure 3 The diagram shows the connection circuit between the sensor and the processor.

[0027] Figure 4 The diagram shows the connection circuit between various sensors and the processor.

[0028] Figure 5 The diagram shows a circuit diagram of the wireless communication module and the processor.

[0029] Figure 6 The diagram shows the connection circuit between the voice broadcast module and the processor.

[0030] Figure 7The diagram shows the connection circuit between the shutdown relay and the processor.

[0031] Figure 8 The diagram shows the connection circuit between the start relay and the processor. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0033] An example of a safe operation control device for grain entering and leaving the warehouse is as follows:

[0034] Figure 1 The diagram shown is a system structure schematic of a grain loading and unloading safety operation control device according to an embodiment of this application. This application provides a grain loading and unloading safety operation control device, in one embodiment, as follows: Figure 1 As shown, the grain loading and unloading safety operation control device includes a belt conveyor electrical control box 1, an intelligent integrated control terminal 2, a wireless communication module 3, and a voice broadcast module 4. The belt conveyor electrical control box 1 includes a belt motor M1, a manual start button 101, a manual stop button 102, and a switch control circuit. The belt conveyor electrical control box 1 also has multiple sensors 103. The belt motor M1 is connected to three-phase AC power. Part of the switch control circuit is connected in series between the belt motor M1 and the three-phase AC power. Figure 1 The circuit is labeled A, B, and C phases. The manual stop button 102, manual start button 101, and a portion of the switch control circuitry are connected in series between the live wire and the ground wire. Specifically, one end of the manual stop button 102 is connected to one live wire of the three-phase AC power supply. The other end of the manual stop button 102 is connected in series with one end of the manual start button 101. The other end of the manual start button 101 is connected to the ground wire. Figure 1 The value is represented as N. The intelligent integrated control terminal 2 includes a processor 201, a stop relay 202, and a start relay 203. The processor 201 includes multiple data input serial ports, multiple data output serial ports, a wireless communication serial port, and a voice communication serial port. The signal terminal of the sensor 103 is connected to the data input serial port. The stop relay 202 is connected to the data output serial port, and the start relay 203 is connected to the data output serial port. The stop relay 202 is connected in series between the manual stop button 102 and the manual start button 101, and the start relay 203 is connected in parallel across the two ends of the manual start button 101. The wireless communication module 3 is connected to the wireless communication serial port. The voice broadcast module 4 is connected to the voice communication serial port.

[0035] In this embodiment, the manual stop button 102 is normally closed, and the manual start button 101 is normally open. When the manual start button 101 is energized, the switch control circuit enables the belt motor M1 and the three-phase AC power to conduct to each other, thereby starting the belt motor M1. The sensor monitors the operating condition and feeds it back to the processor 201. The processor 201 can control the start relay 203 and the stop relay 203 to switch their open and closed states, thereby realizing automated start and stop control of the belt motor M1.

[0036] In one embodiment, the switch control circuit includes a matched three-stage switch KM1 and a contactor coil KM1. The three-stage switch KM1 is connected in series between the belt motor M1 and the three-phase AC power supply, and the contactor coil KM1 is connected in series between the manual start button 101 and the ground wire. The belt conveyor electrical control box 1 also includes a reset switch, which is connected in parallel across the manual start button 101. In application, when the manual start button 101 is energized, the contactor coil KM1 is energized, thereby attracting the three-stage switch KM1, closing the three-stage switch KM1, and turning on the belt motor M1 to operate.

[0037] In one embodiment, such as Figure 1 As shown, the belt conveyor electrical control box 1 also includes a first thermal overload relay RJ1 and a second thermal overload relay RJ2. The first thermal overload relay RJ1 is connected in series between the belt motor M1 and the three-phase AC power supply, and the second thermal overload relay RJ2 is connected in series between the manual start button 101 and the ground wire. In this embodiment, when the circuit containing the first thermal overload relay RJ1 and the second thermal overload relay RJ2 experiences excessive load or excessive operating current, the bimetallic strip inside the thermal overload relay bends due to heat, triggering the contacts to open, thus preventing the circuit from overheating.

[0038] Figure 2 The diagram shows the circuit structure of the power supply module. In one embodiment, as shown... Figure 2As shown, the grain in / out storage safety operation control device also includes a power supply module, which includes voltage regulator chip U39, voltage regulator chip U17, fuse F1, capacitor C56, capacitor C55, diode D2, inductor L1, capacitor C57, capacitor C58, capacitor C1, capacitor C14, capacitor C3, and capacitor C12. Voltage regulator chip U39 includes a first VIN terminal, a first GND terminal, an EN terminal, a first OUT terminal, and an FT terminal. Both the first GND terminal and the EN terminal are grounded. The +12V power supply is connected to the first VIN terminal. Fuse F1 is connected in series between the +12V power supply and the first VIN terminal. Capacitor C56 and capacitor C55 are connected in parallel between the first VIN terminal and the first GND terminal. The cathode of diode D2 is connected to the first OUT terminal, and the anode of diode D2 is grounded. Inductor L1 and capacitor C57 are connected in series and then in parallel across diode D2. Capacitor C58, capacitor C1, and capacitor C14 are connected in parallel across capacitor C57. The FT terminal is connected between inductor L1 and capacitor C57, and a +5V power supply is drawn from the line between the FT terminal and capacitor C57. The voltage regulator chip U17 includes a second VIN terminal, a second GND terminal, and a second OUT terminal, with the second GND terminal grounded. A +5V power supply is connected to the second VIN terminal. Capacitor C3 is connected in parallel to the second OUT terminal and the second GND terminal. Capacitor C12 is connected in parallel across capacitor C3. A +3.3V power supply is drawn between the second OUT terminal and capacitor C3. The +3.3V power supply is connected to the power supply terminal of processor 201.

[0039] In this embodiment, voltage regulator chip U39 can be an LM2596S-5.0 type, and voltage regulator chip U17 can be an XC6214P332JR type. Voltage regulator chip U39 converts +12V to +5V output. The +5V can be used by some electrical components and can also be further stepped down by voltage regulator chip U17. Voltage regulator chip U17 can convert +5V to +3.3V output.

[0040] Figure 3 The diagram shows a schematic of the connection circuit between the sensor and the processor. In one embodiment, as shown... Figure 3As shown, the belt conveyor electrical control box 1 also includes an optocoupler U6, a capacitor C60, and an inductor L2. The optocoupler U6 includes pin 1001, pin 2002, pin 3003, and pin 4004. The signal terminal of the sensor 103 is connected to pin 1001 of the optocoupler U6. The capacitor C60 is connected in parallel between pin 1001 and pin 2002 of the optocoupler U6. A -24V power supply is connected between the capacitor C60 and pin 2002 of the optocoupler U6. Pin 3003 of the optocoupler U6 is connected to the data input serial port. Pin 4004 of the optocoupler U6 is grounded. One end of the inductor L2 is connected to a +3.3V power supply, and the other end of the inductor L2 is connected between pin 3003 of the optocoupler U6 and the data input serial port. In this embodiment, the optocoupler U6 can achieve isolated transmission through an optical medium, controlling whether the detection signal from the sensor 103 is sent to the processor 201. The working principle of the optocoupler U6 avoids electromagnetic interference. Even in high temperature, high humidity, or strong electromagnetic field environments, the optocoupler can still operate stably, which is superior to traditional relays.

[0041] Figure 4 The diagram shows a schematic of the connection circuit between various sensors and a processor. In one embodiment, as shown... Figure 4 As shown, sensor 103 is selected from one of the following: motor overload sensor, speed sensor, belt misalignment sensor, shaft temperature sensor, human proximity sensor, noise sensor, start switch sensor, and emergency stop switch sensor. The above sensors are connected to the processor's data input serial port, as shown in the reference... Figure 5 The aforementioned sensors are respectively connected to the processor's serial ports DI0, DI1, DI2, DI3, DI4, DI5, DI6, and DI7.

[0042] Figure 5 The diagram shows a circuit diagram of the wireless communication module and processor. In one embodiment, as shown... Figure 5 As shown, wireless communication module 3 is a 433 wireless module. Wireless communication module 3 includes a ground terminal, a VCC terminal, an RX terminal, and a TX terminal. The wireless communication serial port includes PA9 and PA10 terminals. The ground terminal is grounded, the VCC terminal is connected to a +3.3V power supply, the RX terminal is connected to the PA9 terminal, and the TX terminal is connected to the PA10 terminal.

[0043] Figure 6 The diagram shows the connection circuit between the voice broadcast module and the processor. In one embodiment, as shown... Figure 6As shown, the grain in / out storage safety operation control device also includes a transceiver IC7 module. The voice broadcast module 4 includes a broadcast ground terminal, a broadcast VCC terminal, a broadcast audio A terminal, and a broadcast audio B terminal. The transceiver IC7 module includes a transceiver RO terminal, a transceiver RE terminal, a transceiver DE terminal, a transceiver DI terminal, a transceiver VCC terminal, a transceiver audio B terminal, a transceiver audio A terminal, and a transceiver ground terminal. The processor's voice communication serial port includes PB3 terminals, PB6 terminals, and PD2 terminals. The transceiver IC7 module can be a MAX3485AE, and the TVS diodes D18 and D19 can be SMAJ5.0CA. Both the broadcast ground and the transmit / receive ground are grounded. The transmit / receive RO terminal is connected to the PB3 terminal, the transmit / receive RE terminal is connected to the PB6 terminal, the transmit / receive DE terminal is connected to the PB6 terminal, and the transmit / receive DI terminal is connected to the PD2 terminal. A capacitor C2 is connected to the transmit / receive VCC terminal, and the other end of the capacitor C2 is grounded. A +3.3V power supply is connected between the transmit / receive VCC terminal and the capacitor C2. The transmit / receive audio B terminal is connected to the broadcast audio B terminal, and the transmit / receive audio A terminal is connected to the broadcast audio A terminal. A +3.3V power supply is connected to the broadcast VCC terminal. An inductor R46 is connected in parallel between the transmit / receive audio B terminal and the transmit / receive audio A terminal. A TVS diode D18 is also connected to the transmit / receive audio A terminal, and the other end of the TVS diode D18 is grounded. A TVS diode D19 is also connected to the transmit / receive audio B terminal, and the other end of the TVS diode D19 is grounded.

[0044] Figure 7 The diagram shows a schematic of the connection circuit between the shutdown relay and the processor. In one embodiment, as shown... Figure 7As shown, the grain entry and exit safety operation control device also includes an optocoupler U5 and a first PNP transistor 8. The optocoupler U5 includes a first pin, a second pin, a third pin, and a fourth pin. The data output serial port includes a PB15 terminal, which is connected to the first pin of the optocoupler U5. An inductor R23 is connected in series between the PB15 terminal and the first pin of the optocoupler U5. The second pin of the optocoupler U5 is grounded. The third pin of the optocoupler U5 is connected to the first end of the first PNP transistor 8. An inductor R20 is connected in series between the third pin of the optocoupler U5 and the first PNP transistor 8. The third end of the first PNP transistor 8 is connected to a -24V power supply. The stop relay 202 includes a stop relay switch 2021 and a stop relay coil 2022. The stop relay switch 2021 is connected in series between the manual stop button 102 and the manual start button 101. One end of the stop relay coil 2022 is connected to the second end of the first PNP transistor 8, and the other end of the stop relay coil 2022 is connected to a +24V power supply. A diode D6 is also connected in parallel across the two ends of the stop relay coil 2022. In this embodiment, the optocoupler U5 can achieve isolated transmission through an optical medium, i.e., whether the signal from the control processor 201 is sent to the stop relay coil 2022. The working principle of the optocoupler U5 can avoid electromagnetic interference. In high temperature, high humidity, or strong electromagnetic field environments, the optocoupler can still work stably, which is superior to traditional relays.

[0045] Figure 8 The diagram shows a schematic of the connection circuit between the start relay and the processor. In one embodiment, as shown... Figure 8As shown, the grain in-and-out warehouse safety operation control device also includes an optocoupler U13 and a second PNP transistor. The optocoupler U13 includes a first pin, a second pin, a third pin, and a fourth pin. The data output serial port includes a PB6 terminal, which is connected to the first pin of the optocoupler U13. An inductor R66 is connected in series between the PB6 terminal and the first pin of the optocoupler U13. The second pin of the optocoupler U13 is grounded. The third pin of the optocoupler U13 is connected to the first end of the second PNP transistor. An inductor R60 is connected in series between the third pin of the optocoupler U13 and the second PNP transistor. The third end of the second PNP transistor is connected to a -24V power supply. The start relay 203 includes a start relay switch 2031 and a start relay coil 2032. The start relay switch 2031 is connected in parallel across the two ends of the manual start button 101. One end of the start relay coil 2032 is connected to the second end of the second PNP transistor, and the other end of the start relay coil 2032 is connected to a +24V power supply. A diode D22 is also connected in parallel across the two ends of the start relay coil 2032. In this embodiment, the optocoupler U13 can achieve isolated transmission through an optical medium, i.e., whether the signal from the control processor 201 is sent to the start relay coil 2032. The working principle of the optocoupler U13 can avoid electromagnetic interference. In high temperature, high humidity, or strong electromagnetic field environments, the optocoupler can still work stably, which is superior to traditional relays.

[0046] exist Figure 7 and Figure 8 In this embodiment, when both the stop relay 202 and the start relay 203 are turned on by the processor 201, the contactor coil KM1 is energized, thereby attracting the three-stage switch KM1 and starting the belt motor M1; when the start relay 203 is turned on and the stop relay 202 is turned off by the processor 201, the contactor coil KM1 is no longer energized, the three-stage switch KM1 is turned off, and the belt motor M1 stops.

[0047] The basic principles of this application have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this application are merely examples and not limitations, and should not be considered as essential features of each embodiment of this application. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the application to the necessity of employing the aforementioned specific details for implementation.

[0048] The block diagrams of devices, apparatuses, devices, and systems involved in this application are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, devices, and systems can be connected, arranged, and configured in any manner. Words such as “comprising,” “including,” “having,” etc., are open-ended terms meaning “including but not limited to,” and are used interchangeably with them. The terms “or” and “and” as used herein refer to the terms “and / or,” and are used interchangeably with them unless the context clearly indicates otherwise. The term “such as” as used herein refers to the phrase “such as but not limited to,” and is used interchangeably with it.

[0049] It should also be noted that in the apparatus, equipment, and methods of this application, the components or steps can be disassembled and / or recombined. These disassemblies and / or recombinations should be considered as equivalent solutions of this application.

[0050] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use this application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of this application. Therefore, this application is not intended to be limited to the aspects shown herein, but rather to be accorded the widest scope consistent with the principles and novel features of the present invention.

[0051] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications or equivalent substitutions made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A safety operation control device for grain entering and leaving a warehouse, characterized in that, It includes a belt conveyor electrical control box (1), an intelligent integrated control terminal (2), a wireless communication module (3), and a voice broadcast module (4). The belt conveyor electrical control box (1) includes a belt motor M1, a manual start button (101), a manual stop button (102), and a switch control circuit. The belt conveyor electrical control box (1) is also equipped with multiple sensors (103). The belt motor M1 is connected to three-phase AC power. Part of the switch control circuit is connected in series between the belt motor M1 and the three-phase AC power. The manual stop button (102), the manual start button (101), and part of the switch control circuit are connected in series between the live wire and the ground wire. The intelligent integrated control terminal (2) includes a processor (201), a stop relay (202), and a start relay (203). The processor (201) includes multiple data input serial ports, multiple data output serial ports, a wireless communication serial port, and a voice communication serial port. The signal terminal of the sensor (103) is connected to the data input serial port. The stop relay (202) is connected to the data output serial port. The start relay (203) is connected to the data output serial port. The stop relay (202) is connected in series between the manual stop button (102) and the manual start button (101). The start relay (203) is connected in parallel across the two ends of the manual start button (101). The wireless communication module (3) is connected to the wireless communication serial port; The voice broadcast module (4) is connected to the voice communication serial port.

2. The grain entry and exit safety operation control device according to claim 1, characterized in that, The switch control circuit includes a three-stage switch KM1 and a contactor coil KM1 that are matched with each other. The three-stage switch KM1 is connected in series between the belt motor M1 and the three-phase AC power, and the contactor coil KM1 is connected in series between the manual start button (101) and the ground wire. The belt conveyor electrical control box (1) also includes a reset switch, which is connected in parallel across the two ends of the manual start button (101).

3. The grain entry and exit safety operation control device according to claim 1, characterized in that, The belt conveyor electrical control box (1) also includes a first thermal overload relay RJ1 and a second thermal overload relay RJ2; The first thermal overload relay RJ1 is connected in series between the belt motor M1 and the three-phase AC power supply, and the second thermal overload relay RJ2 is connected in series between the manual start button (101) and the ground wire.

4. The grain entry and exit safety operation control device according to claim 1, characterized in that, It also includes a power supply module, which includes a voltage regulator chip U39, a voltage regulator chip U17, a fuse F1, a capacitor C56, a capacitor C55, a diode D2, an inductor L1, a capacitor C57, a capacitor C58, a capacitor C1, a capacitor C14, a capacitor C3, and a capacitor C12. The voltage regulator chip U39 includes a first VIN terminal, a first GND terminal, an EN terminal, a first OUT terminal, and an FT terminal, wherein the first GND terminal and the EN terminal are both grounded; The +12V power supply is connected to the first VIN terminal. The fuse F1 is connected in series between the +12V power supply and the first VIN terminal. The capacitor C56 is connected in parallel between the first VIN terminal and the first GND terminal. The capacitor C55 is connected in parallel between the first VIN terminal and the first GND terminal. The cathode of the diode D2 is connected to the first OUT terminal, and the anode of the diode D2 is grounded. The inductor L1 and the capacitor C57 are connected in series and then in parallel across the two ends of the diode D2. The capacitor C58 is connected in parallel across the two ends of the capacitor C57. The capacitor C1 is connected in parallel across the two ends of the capacitor C57. The capacitor C14 is connected in parallel across the two ends of the capacitor C57. The FT terminal is connected between the inductor L1 and the capacitor C57. A +5V power supply is led out from the line between the FT terminal and the capacitor C57. The voltage regulator chip U17 includes a second VIN terminal, a second GND terminal, and a second OUT terminal, with the second GND terminal grounded. The +5V power supply is connected to the second VIN terminal, the capacitor C3 is connected in parallel to the second OUT terminal and the second GND terminal, and the capacitor C12 is connected in parallel across the two ends of the capacitor C3; a +3.3V power supply is drawn between the second OUT terminal and the capacitor C3. The +3.3V power supply is connected to the power supply terminal of the processor (201).

5. The grain entry and exit safety operation control device according to claim 4, characterized in that, The belt conveyor electrical control box (1) also includes an optocoupler U6, a capacitor C60, and an inductor L2; the optocoupler U6 includes a first pin (1001), a second pin (1002), a third pin (1003), and a fourth pin (1004). The signal terminal of the sensor (103) is connected to the first pin (1001) of the optocoupler U6. The capacitor C60 is connected in parallel between the first pin (1001) and the second pin (1002) of the optocoupler U6. A -24V power supply is connected between the capacitor C60 and the second pin (1002) of the optocoupler U6. The third pin (1003) of the optocoupler U6 is connected to the data input serial port. The fourth pin (1004) of the optocoupler U6 is grounded. One end of the inductor L2 is connected to a +3.3V power supply. The other end of the inductor L2 is connected between the third pin (1003) of the optocoupler U6 and the data input serial port.

6. The grain entry and exit safety operation control device according to claim 4, characterized in that, The sensor (103) is selected from one of the following: Motor overload sensor, speed sensor, belt misalignment sensor, shaft temperature sensor, human proximity sensor, noise sensor, start switch sensor, emergency stop switch sensor.

7. The grain entry and exit safety operation control device according to claim 1, characterized in that, The wireless communication module (3) is a 433 wireless module. The wireless communication module (3) includes a ground terminal, a VCC terminal, an RX terminal, and a TX terminal. The wireless communication serial port includes a PA9 terminal and a PA10 terminal. The communication module's ground terminal is grounded, the communication module's VCC terminal is connected to a +3.3V power supply, the communication module's RX terminal is connected to the PA9 terminal, and the communication module's TX terminal is connected to the PA10 terminal.

8. The grain entry and exit safety operation control device according to claim 1, characterized in that, It also includes a transceiver IC7 module. The voice broadcast module (4) includes a broadcast ground terminal, a broadcast VCC terminal, a broadcast audio A terminal and a broadcast audio B terminal. The transceiver IC7 module includes a transceiver RO terminal, a transceiver RE terminal, a transceiver DE terminal, a transceiver DI terminal, a transceiver VCC terminal, a transceiver audio B terminal, a transceiver audio A terminal and a transceiver ground terminal. The voice communication serial port includes a PB3 terminal, a PB6 terminal and a PD2 terminal. Both the broadcast ground terminal and the transceiver ground terminal are grounded. The transceiver RO terminal is connected to the PB3 terminal, the transceiver RE terminal is connected to the PB6 terminal, the transceiver DE terminal is connected to the PB6 terminal, the transceiver DI terminal is connected to the PD2 terminal, the transceiver VCC terminal is connected to a capacitor C2, and the other end of the capacitor C2 is grounded. A +3.3V power supply is connected between the transceiver VCC terminal and the capacitor C2. The transceiver audio B terminal is connected to the broadcast audio B terminal, the transceiver audio A terminal is connected to the broadcast audio A terminal, the broadcast VCC terminal is connected to a +3.3V power supply, an inductor R46 is connected in parallel between the transceiver audio B terminal and the transceiver audio A terminal, a TVS diode D18 is also connected to the transceiver audio A terminal, and the other end of the TVS diode D18 is grounded. The transceiver audio B terminal is also connected to a TVS diode D19, and the other end of the TVS diode D19 is grounded.

9. The grain entry and exit safety operation control device according to claim 1, characterized in that, It also includes an optocoupler U5 and a first PNP transistor (8). The optocoupler U5 includes a first pin, a second pin, a third pin, and a fourth pin. The data output serial port includes a PB15 terminal. The PB15 terminal is connected to the first pin of the optocoupler U5. An inductor R23 is connected in series between the PB15 terminal and the first pin of the optocoupler U5. The second pin of the optocoupler U5 is grounded. The third pin of the optocoupler U5 is connected to the first end of the first PNP transistor (8). An inductor R20 is connected in series between the third pin of the optocoupler U5 and the first PNP transistor (8). The third end of the first PNP transistor (8) is connected to a -24V power supply. The stop relay (202) includes a stop relay switch (2021) and a stop relay coil (2022). The stop relay switch (2021) is connected in series between the manual stop button (102) and the manual start button (101). One end of the stop relay coil (2022) is connected to the second end of the first PNP transistor (8). The other end of the stop relay coil (2022) is connected to a +24V power supply. A diode D6 is also connected in parallel across the two ends of the stop relay coil (2022).

10. The grain entry and exit safety operation control device according to claim 1, characterized in that, It also includes an optocoupler U13 and a second PNP transistor. The optocoupler U13 includes a first pin, a second pin, a third pin, and a fourth pin. The data output serial port includes a PB6 terminal, which is connected to the first pin of the optocoupler U13. An inductor R66 is connected in series between the PB6 terminal and the first pin of the optocoupler U13. The second pin of the optocoupler U13 is grounded. The third pin of the optocoupler U13 is connected to the first end of the second PNP transistor. An inductor R60 is connected in series between the third pin of the optocoupler U13 and the second PNP transistor. The third end of the second PNP transistor is connected to a -24V power supply. The start relay (203) includes a start relay switch (2031) and a start relay coil (2032). The start relay switch (2031) is connected in parallel across the two ends of the manual start button (101). One end of the start relay coil (2032) is connected to the second end of the second PNP transistor. The other end of the start relay coil (2032) is connected to a +24V power supply. A diode D22 is also connected in parallel across the two ends of the start relay coil (2032).

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