CN218675733U - Wisdom granary cloud platform management and control system - Google Patents
Wisdom granary cloud platform management and control system Download PDFInfo
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Abstract
The utility model discloses a smart granary cloud platform management and control system, which overcomes the problem of inconvenient data lookup existing in the prior art; the intelligent granary cloud platform management and control system comprises an acquisition device (1), a control device (2), an execution device (3), a cloud platform (4) and a mobile phone client (5); the acquisition device (1) is in wired connection with the A pin and the B pin of the communication module U6 in the control device (2) through the A pin and the B pin of the communication module U3, wherein: the model of the communication module U3 is MAX3485EESA, and the model of the communication module U6 is MAX3485EESA; the A2 terminal of an alternating current coil in the execution device (3) is in wired connection with the output end OUT1 which is 4 pins of a contact switch of a relay K1 in the control device (2); the cloud platform (4) is in wireless connection with the control device (2), and the mobile phone client (5) is in wireless connection with the cloud platform (4).
Description
Technical Field
The utility model relates to a control system among the grain storage accuse temperature technical field, more exactly, the utility model relates to a wisdom granary cloud platform management and control system.
Background
As a large population country, the demand of China on grains is difficult to estimate, in order to solve the grain demand, not only the grain yield is increased in an effort, but also the situation that the grain yield is reduced due to natural disasters is prevented, the grain storage is more and more important, the country mostly stores the grains by adopting a warehouse, in the traditional storage process, various kinds of monitoring on the grains can only be stored on a specified PC, the data query is very inconvenient, the capacity of a hard disk is limited, and in order to solve the problems, the intelligent grain bin cloud platform management and control system is provided. Monitoring data are uploaded to the cloud server, so that the monitoring data can be inquired at any PC or mobile phone end, data storage is improved, and an intelligent control function is added.
Disclosure of Invention
The utility model aims to solve the technical problem that the inconvenient problem is looked up to the data of having overcome prior art existence, provide a wisdom granary cloud platform management and control system.
In order to solve the technical problem, the utility model discloses an adopt following technical scheme to realize:
the intelligent granary cloud platform management and control system comprises an acquisition device, a control device, an execution device, a cloud platform and a mobile phone client;
the acquisition device is in wired connection with the A pin and the B pin of the communication module U6 in the control device through the A pin and the B pin of the communication module U3, the A2 wiring end of the alternating current coil in the execution device is in wired connection with the output end OUT1 of the control device, the cloud platform is in wireless connection with the control device, and the mobile phone client is in wireless connection with the cloud platform.
The acquisition device in the technical scheme comprises an MCU U1, a temperature and humidity sensor U2, a communication module U3 and a temperature sensor network; the model of the MCU U1 is STC8G1K08-TSSOP20, the model of the temperature and humidity sensor U2 is AHT20, the temperature sensor network consists of temperature sensors, and the model of the communication module U3 is MAX3485EESA;
the temperature and humidity sensor network is characterized in that an IO1 pin line of the MCU U1 is connected with a DA pin of the temperature and humidity sensor U2, an IO2 pin line of the MCU U1 is connected with a CLK pin of the temperature and humidity sensor U2, a TX pin line of the MCU U1 is connected with an RX pin of the communication module U3, an RX pin line of the MCU U1 is connected with a TX pin of the communication module U3, an IO3 pin line of the MCU U1 is connected with a DQ pin of the temperature sensor network, and a VSS pin line of the MCU U1 is connected with a VCC pin and a GND pin of the temperature sensor network.
The temperature sensor network in the technical scheme is formed by connecting 100-500 temperature sensors in parallel, the temperature sensors are buried in a grain pile according to the rule that the row-column spacing in the horizontal direction is not more than 5m, the spacing in the vertical direction is not more than 5m, the type of the temperature sensors is DS18B20, the temperature sensors are connected and communicated through a 1-wire bus, a VCC pin and a GND pin of the temperature sensors are connected together and connected to a VSS pin of an MCU U1, and DQ pins of all the temperature sensors are connected with an IO3 pin of the MCU U1 through the 1-wire bus.
The control device in the technical scheme comprises a power supply module U4, an MCU U5, a communication module U6, a 4G module U7, a resistor R1, a triode Q1 and a relay K1; the power module U4 adopts S-20-5 of IDEC company, the MCU U5 adopts a singlechip with the model of STC8A8K32AS4A12, the communication module U6 adopts MAX3485EESA, the 4G module U7 adopts EC200N-CN, the triode Q1 adopts NPN type triode S8050, and the relay K1 adopts SRD-05VDC-SL-C;
a VCC pin line of the MCU U5 is connected with a V1 pin of the power supply module U4, and a VSS pin line of the MCU U5 is connected with a COM pin of the power supply module U4; a TX1 pin of the MCU U5 is connected with an RX pin line of the communication module U6, an RX1 pin of the MCU U5 is connected with a TX pin line of the communication module U6, and the MCU U5 and the communication module U6 carry out asynchronous serial communication; a TX2 pin of the MCU U5 is connected with an RX pin line of the 4G module U7, an RX2 pin of the MCU U5 is connected with a TX pin line of the 4G module U7, and the MCU U5 and the 4G module are in asynchronous serial communication; the IO1 pin of MCU U5 is connected with a pin line of resistance R1, triode Q1's base is connected to resistance R1's other end line, power module U4's COM pin is connected to triode Q1's projecting pole line, relay K1's drive coil's 1 pin is connected to the collecting electrode of triode, power module U4's V1 pin is connected to 2 pins of relay K1's drive coil, live wire L1 is connected to relay K1's contact switch's 3 pins.
The executing device (3) in the technical scheme comprises an alternating current contactor KM1 and an axial flow fan M1; the alternating current contactor KM1 adopts an alternating current contactor with the model number CJX2-09-10, and the axial flow fan M1 adopts a 1.2KW three-phase alternating current motor with the model number SUN-ZNTTF-FJXTS;
the alternating current contactor KM1 comprises 3 groups of normally open main contacts and alternating current coils, wherein the main contact 1 is connected with a live wire L1 line of a power grid, the main contact 3 is connected with a live wire L2 of the power grid, and the main contact 5 is connected with a live wire L3 line of the power grid; the main contact 2, the main contact 4, the main contact 6 and the power supply end of the axial flow fan M1 are connected; the A1 wiring end of the alternating current coil is connected with a power grid zero line, and the A2 wiring end of the alternating current coil is used as an input pin of the execution device and is connected with a 4 pin wire of a contact switch of a relay K1 in the control device.
Compared with the prior art, the beneficial effects of the utility model are that:
1. a wisdom granary cloud platform management and control system can be according to temperature in the storehouse, weather conditions automatic control ventilation system operating condition.
2. Wisdom granary cloud platform management and control system can remote operation ventilation system.
3. A wisdom granary cloud platform management and control system grain feelings data in high in the clouds storage granary to at mobile client inquiry.
Drawings
Fig. 1 is a schematic block diagram of the structure of a smart granary cloud platform management and control system according to the present invention;
fig. 2 is a schematic view of the structural composition of the acquisition device in the intelligent granary cloud platform management and control system according to the present invention;
fig. 3 is a schematic view of the structural composition of a control device in the intelligent granary cloud platform management and control system according to the present invention;
fig. 4 is a schematic view of the structural composition of an executing device in the smart granary cloud platform management and control system according to the present invention;
in the figure: 1. the system comprises a collection device, 2a control device, 3 an execution device, 4a cloud platform and 5a mobile phone client.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings:
referring to fig. 1, the intelligent granary cloud platform management and control system comprises an acquisition device 1, a control device 2, an execution device 3, a cloud platform 4 and a mobile phone client 5.
The collecting device 1 is arranged in a granary and is used for collecting parameters such as temperature, humidity and temperature in a grain stack;
the control device 2 receives various parameters of the acquisition device 1, uploads the parameters to the cloud platform, can also receive a control command of the cloud platform for the execution device 3, and can judge whether the execution device 2 needs to be started or not according to weather information sent by the cloud platform and the parameters in the bin, so that automatic control is realized;
the execution device 3 executes the control command of the control device 2 to improve the grain storage condition in the bin;
the cloud platform 4 stores various parameters sent by the control device 2 and authorizes the client right, so that a client can remotely control the control device 2 through the client 5, and the client can also be allowed to inquire historical information and store weather information sent by the client for the control device 2 to inquire;
the mobile phone client 5 downloads a corresponding APP on a client mobile phone, a client name and a password are input on an APP interface to obtain a corresponding permission on the cloud platform, a control command can be issued and sent to the control device 2 through the cloud platform to achieve remote control, the APP inquires a local weather forecast through accessing a third website, namely China weather, obtains current weather information and sends the current weather information to the control device 2 through the cloud platform 4, and the APP can inquire historical data stored in the cloud platform 4.
The acquisition device 1 is in wired connection with the control device 2, the execution device is in wired connection with the control device, the cloud platform 4 is in wireless connection with the control device 2, and the mobile phone client 5 is in wireless connection with the cloud platform 4.
Referring to fig. 2, the collecting device 1 includes an MCU U1, a temperature and humidity sensor U2, a communication module U3, and a temperature sensor network.
The model of the MCU U1 is STC8G1K08-TSSOP20, no external crystal oscillator and external reset are needed, the structure is simple, and the cost is low. The IO1 pin of the MCU U1 is connected with the DA pin of the temperature and humidity sensor U2, the IO2 pin of the MCU U1 is connected with the CLK pin of the temperature and humidity sensor U2, the TX pin of the MCU U1 is connected with the RX pin of the communication module U3, the RX pin of the MCU U1 is connected with the TX pin of the communication module U3, the IO3 pin of the MCU U1 is connected with the DQ pin of the temperature sensor network, and the VSS pin of the MCU U1 is connected with the VCC pin and the GND pin of the temperature sensor network.
Referring to fig. 2, the temperature and humidity sensor U2 has the model of AHT20, is small in size, wide in measurement range, high in precision, and low in development cost and short in cycle by adopting I2C communication. Temperature and humidity sensor U2 hangs on the room roof beam of central point position in the granary, and humiture in the test storehouse, temperature and humidity sensor U2's DA pin is connected MCU U1's IO1 pin, and temperature and humidity sensor U2's CLK pin is connected MCU U1's IO2 pin, realizes I2C communication, and the humiture information that will gather conveys MCU U1.
Referring to fig. 2, the temperature sensor network is formed by connecting 100-500 temperature sensors in parallel, the temperature sensors are embedded in the grain pile according to the rule that the row-column spacing in the horizontal direction is not more than 5m and the vertical spacing is not more than 5m, the model of the temperature sensors is DS18B20,1-wire bus connection communication, the measurement range is-55 ℃ to +125 ℃, and the precision is +/-0.5 ℃;
referring to fig. 2, the VCC pin and the GND pin of the temperature sensor are connected together and to the VSS pin of the MCU U1, and the DQ pins of all the temperature sensors are connected to the IO3 pin of the MCU U1 by a 1-wire bus; the temperature sensor converts the temperature signal into a digital signal and transmits the digital signal to the controller MCU U1 through a DQ pin.
Referring to fig. 2, the model of the communication module U3 is MAX3485EESA, the maximum communication rate is 250kbps, the RX pin of the communication module U3 is connected to the TX pin of the MCU U1, the TX pin of the communication module U3 is connected to the RX pin of the MCU U1, the pin a of the communication module U3 is connected to the pin a of the communication module U6 in the control device 2, and the pin B of the communication module U3 is connected to the pin B of the communication module U6 in the control device 2, so as to realize RS485 bus communication between the acquisition device 1 and the control device 2.
The working principle is as follows: temperature and humidity data in the storehouse are gathered to temperature and humidity sensor network, convey to MCU U1 through the I2C bus, temperature sensor network gather each point temperature data in the grain heap and convey to MCU U1 through 1-wire bus, MCU U1 will gather data and convey controlling means 2 through communication module U3, provide raw data when doing data analysis for controlling means 2.
Referring to fig. 3, the control device 2 includes a power module U4, an MCU U5, a communication module U6, a 4G module U7, a resistor R1, a triode Q1, and a relay K1.
The power module U4 adopts S-20-5 of IDEC company, two input ends IN1 and IN2 of the power module U4 are respectively connected with a live wire L1 and a zero line of a power grid, a V1 pin of the power module U4 is a positive voltage output end of the power module U4, an output voltage 5V, a COM pin is a negative voltage output end of the power module U4, the potential 0 of the output voltage is GND, and the power module U4 supplies power to the MCU U5, the communication modules U6 and the 4G module U7 and the relay K1.
The MCU U5 adopts a singlechip with the model of STC8A8K32AS4A12, a 24M high-precision oscillator is arranged in the MCU U5, a peripheral circuit is simple, and the cost is saved.
A VCC pin line of the MCU U5 is connected with a V1 pin of the power supply module U4, and a VSS pin line of the MCU U5 is connected with a COM pin of the power supply module U4; a TX1 pin of the MCU U5 is connected with an RX pin line of the communication module U6, an RX1 pin of the MCU U5 is connected with a TX pin line of the communication module U6, and the MCU U5 and the communication module U6 carry out asynchronous serial communication; a TX2 pin of the MCU U5 is connected with an RX pin line of the 4G module U7, an RX2 pin of the MCU U5 is connected with a TX pin line of the 4G module U7, and the MCU U5 and the 4G module are in asynchronous serial communication; an IO1 pin of the MCU U5 is connected with a pin line of the resistor R1.
The model of the 4G module U7 is EC200N-CN, and the 4G module U7 has the function of full-network communication and is configured in a transparent transmission mode, a VCC pin of the 4G module U7 is connected with a V1 pin of a power supply module U4, a VSS pin of the 4G module is connected with a COM pin of the power supply module U4, a TX pin of the 4G module U7 is connected with an RX2 pin of the MCU U5, an RX pin of the 4G module U7 is connected with a TX2 pin of the MCU U5, and the MCU U5 realizes data exchange with a cloud platform through the 4G module U7.
The type of the communication module U6 is MAX3485EESA, the maximum communication speed is 250kbps, an RX pin of the communication module U6 is connected with a TX1 pin of the MCU U5, a TX pin of the communication module U6 is connected with an RX1 pin of the MCU U5, a pin A of the communication module U6 is connected with a pin A of a communication module U3 in the acquisition device 1, a pin B of the communication module U6 is connected with a pin B of the communication module U3 in the acquisition device 1, and RS485 bus communication between the acquisition device 1 and the control device 2 is achieved.
The triode Q1 is an NPN type triode s8050, the collector current can reach 0.5A, and the driving capability is strong.
The relay K1 is SRD-05VDC-SL-C, the contact switching function can reach 10A, and the size is small.
Referring to fig. 3, one end of the resistor R1 is connected to an IO1 pin of the controller MCU U5, the other end of the resistor R1 is connected to a base of the transistor Q1, an emitter of the transistor Q1 is connected to a COM pin of the power module U4, a collector of the transistor is connected to a pin 1 of a driving coil of the relay K1, a pin 2 of the driving coil of the relay K1 is connected to a pin V1 of the power module U4, a pin 3 of a contact switch of the relay K1 is connected to a live wire L1, and a pin 4 of the contact switch of the relay K1 is connected to an input pin of the execution device 3 as an output terminal OUT 1.
The working principle is as follows:
the control device 2 has the following functions
1. Automatic control: the MCU U5 acquires relevant data of the acquisition device 1 through the communication module U6, local weather information is acquired through the 4G module U7, data analysis is carried OUT, when the temperature in a bin is too high or the humidity is too high, or the temperature in a grain stack is too high, and when the weather is dry, the IO1 pin of the MCU U5 outputs a high level, the triode Q1 is conducted, the relay is closed, the OUT1 pin of the relay K1 is connected with a live wire, if the weather is moist and is not easy to open a window for ventilation, the OUT1 pin of the relay K1 outputs a low level, the triode Q1 is cut, the relay K1 contact switch is in a disconnected state, the OUT1 pin of the relay K1 is suspended, and the automatic control function is realized;
2. data uploading: the other function of the MCU U5 uploads the data acquired from the acquisition device 1 to the cloud platform;
3. remote control: when the MCU U5 receives a ventilation opening command from the cloud platform, the IO1 pin of the MCU U5 outputs a high level.
Referring to fig. 4, the actuating device 3 includes an ac contactor KM1 and an axial flow fan M1.
The alternating current contactor KM1 adopts an alternating current contactor with the model number CJX2-09-10, the alternating current contactor KM1 is mainly used in a 50HZ (or 60 HZ) alternating current 380V circuit, the alternating current contactor KM1 comprises 3 groups of normally open main contacts and alternating current coils, wherein the main contact 1 is connected with a live wire L1 line of a power grid, the main contact 3 is connected with a live wire L2 of the power grid, and the main contact 5 is connected with a live wire L3 line of the power grid; the main contact 2, the main contact 4 and the main contact 6 are connected with the power supply end of the axial flow fan M1; the A1 wiring end of the alternating current coil is connected with the zero line of the power grid, the A2 wiring end of the alternating current coil is used as an input pin of the execution device 3 and is connected with an output pin OUT1 pin line of the control device 2, and the alternating current contactor KM1 is used for cutting off or communicating a power supply circuit of the axial flow fan M1;
the axial flow fan M1 adopts a 1.2KW three-phase alternating current motor with the model of SUN-ZNTF-FJXTS.
After an input pin of the execution device 3 is connected to the L1 line, the alternating current contactor KM1 is closed, the axial flow fan M1 is electrified to operate, the input pin of the execution device 3 is disconnected from the L1, the alternating current contactor KM1 is released, the axial flow fan M1 is powered off, and the operation is stopped.
The working principle is as follows: when an input pin of the execution device 3 is connected with an L1 line, a power-on loop is formed by the input pin and a zero line connected with an A1 wiring end of a coil, the alternating current contactor KM1 is attracted, and the main contact 2, the main contact 4 and the main contact 6 are respectively connected with the L1 line, the L2 line and the L3 line to provide electric energy for the axial flow fan M1, so that the axial flow fan M1 operates, the temperature in a bin is reduced, and the grain storage condition is improved; when the input pin of the execution device 3 is connected to the L1 line and disconnected, the energization loop of the coil is disconnected, the alternating current contactor KM1 is released, the main contact 2, the main contact 4 and the main contact 6 are disconnected with the L1 line, the L2 line and the L3 line respectively, and the axial flow fan M1 loses electric energy and stops running.
A wisdom granary cloud platform management and control system theory of operation:
referring to fig. 1 to 4, the acquisition device 1 acquires temperature and humidity data in a warehouse through the temperature and humidity sensor U2, and transmits the temperature and humidity data to the MCU U1 through an I2C bus, the temperature sensor network acquires temperature data of each point in a grain pile and transmits the temperature data to the MCU U1 through a 1-wire bus, the MCU U1 transmits the acquired data to the MCU U5 through an RS485 communication function between the communication module U3 and the communication module U6 in the control device 2, so as to provide raw data for the MCU U5 in the control device 2 to perform data analysis, the MCU U5 uploads the data to the cloud platform 4 through a 4G module U7, the cloud platform 4 stores the data together with current year, month and time information, and a client downloads relevant APP on a mobile phone and inputs a correct password through an authorized user name, so as to acquire authorized data of the warehouse at any time, and cannot inquire the data of the warehouse without authorization; a client can remotely control an authorized warehouse, issues a ventilation opening command and uploads the ventilation opening command to the cloud platform 4, the cloud platform 4 transmits the command to the MCU U5 through the 4G module U7, the MCU U5 controls the IO1 pin to output a high level after receiving the command, the triode Q1 is conducted, the relay K1 is closed, the alternating current contactor KM1 of the execution device 3 is attracted, and the axial flow fan M1 rotates to realize ventilation in the warehouse; APP inquires local weather forecast through visiting a third website, namely China weather, acquires current weather information and uploads the current weather information to the cloud platform 4, the cloud platform 4 sends the information to the MCU U5 in the control device 2, and the MCU U5 determines whether the granary needs to be ventilated according to the weather information, so that an automatic control function is realized.
Claims (5)
1. A smart granary cloud platform management and control system is characterized by comprising an acquisition device (1), a control device (2), an execution device (3), a cloud platform (4) and a mobile phone client (5);
the acquisition device (1) is in wired connection with the A pin and the B pin of a communication module U6 in the control device (2) through the A pin and the B pin of the communication module U3, the A2 wiring end of an alternating current coil in the execution device (3) is in wired connection with the output end OUT1 of the control device (2), the cloud platform (4) is in wireless connection with the control device (2), and the mobile phone client (5) is in wireless connection with the cloud platform (4).
2. The intelligent granary cloud platform management and control system according to claim 1, wherein the acquisition device (1) comprises an MCU U1, a temperature and humidity sensor U2, a communication module U3 and a temperature sensor network;
the model of the MCU U1 is STC8G1K08-TSSOP20, the model of the temperature and humidity sensor U2 is AHT20, the temperature sensor network consists of temperature sensors, and the model of the communication module U3 is MAX3485EESA;
the temperature and humidity sensor network is characterized in that an IO1 pin line of the MCU U1 is connected with a DA pin of the temperature and humidity sensor U2, an IO2 pin line of the MCU U1 is connected with a CLK pin of the temperature and humidity sensor U2, a TX pin line of the MCU U1 is connected with an RX pin of the communication module U3, an RX pin line of the MCU U1 is connected with a TX pin of the communication module U3, an IO3 pin line of the MCU U1 is connected with a DQ pin of the temperature sensor network, and a VSS pin line of the MCU U1 is connected with a VCC pin and a GND pin of the temperature sensor network.
3. The intelligent granary cloud platform management and control system according to claim 2, wherein the temperature sensor network is formed by connecting 100-500 temperature sensors in parallel, the temperature sensors are embedded in the granary according to the rule that the row-column spacing in the horizontal direction is not more than 5m and the vertical direction spacing is not more than 5m, the type of the temperature sensors is DS18B20,1-wire bus connection communication is adopted, a VCC pin and a GND pin of the temperature sensors are connected together and connected to a VSS pin of the MCU U1, and DQ pins of all the temperature sensors are connected with an IO3 pin of the MCU U1 through a 1-wire bus.
4. The intelligent granary cloud platform management and control system according to claim 1, wherein the control device (2) comprises a power module U4, an MCU U5, a communication module U6, a 4G module U7, a resistor R1, a triode Q1 and a relay K1;
the power module U4 adopts S-20-5 of IDEC company, the MCU U5 adopts a singlechip with the model of STC8A8K32AS4A12, the communication module U6 adopts MAX3485EESA, the 4G module U7 adopts EC200N-CN, the triode Q1 adopts NPN type triode S8050, and the relay K1 adopts SRD-05VDC-SL-C;
a VCC pin line of the MCU U5 is connected with a V1 pin of the power supply module U4, and a VSS pin line of the MCU U5 is connected with a COM pin of the power supply module U4; a TX1 pin of the MCU U5 is connected with an RX pin line of the communication module U6, an RX1 pin of the MCU U5 is connected with a TX pin line of the communication module U6, and the MCU U5 and the communication module U6 carry out asynchronous serial communication; a TX2 pin of the MCU U5 is connected with an RX pin line of the 4G module U7, an RX2 pin of the MCU U5 is connected with a TX pin line of the 4G module U7, and the MCU U5 and the 4G module are in asynchronous serial communication; the IO1 pin of MCU U5 is connected with a pin line of resistance R1, triode Q1's base is connected to resistance R1's other end line, power module U4's COM pin is connected to triode Q1's projecting pole line, relay K1's drive coil's 1 pin is connected to the collecting electrode of triode, power module U4's V1 pin is connected to 2 pins of relay K1's drive coil, live wire L1 is connected to relay K1's contact switch's 3 pins.
5. The intelligent granary cloud platform management and control system according to claim 1, wherein the execution device (3) comprises an alternating current contactor KM1 and an axial flow fan M1;
the alternating current contactor KM1 adopts an alternating current contactor with the model number CJX2-09-10, and the axial flow fan M1 adopts a 1.2KW three-phase alternating current motor with the model number SUN-ZNTTF-FJXTS;
the alternating current contactor KM1 comprises 3 groups of normally open main contacts and alternating current coils, wherein the main contact 1 is connected with a live wire L1 line of a power grid, the main contact 3 is connected with a live wire L2 of the power grid, and the main contact 5 is connected with a live wire L3 line of the power grid; the main contact 2, the main contact 4, the main contact 6 and the power supply end of the axial flow fan M1 are connected; a1 wiring end of the alternating current coil is connected with a power grid zero line, and an A2 wiring end of the alternating current coil is used as an input pin of the execution device (3) and is connected with a 4 pin line of a contact switch of a relay K1 in the control device (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202222961888.8U CN218675733U (en) | 2022-11-08 | 2022-11-08 | Wisdom granary cloud platform management and control system |
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| CN202222961888.8U CN218675733U (en) | 2022-11-08 | 2022-11-08 | Wisdom granary cloud platform management and control system |
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