An intelligent terminal IoT management system for grain depots

Abstract

The present invention relates to the field of intelligent management technology for grain depots, specifically to an intelligent terminal IoT management system for grain depots, including an IoT sensing terminal, a network communication layer and an IoT management platform; the IoT sensing terminal is used to perform real-time detection and early warning of the grain storage environment in each granary through a sensor system and related peripherals; the network communication layer is used to transmit the data to the IoT management platform after data encryption by clustering the IoT sensing terminals configured for a number of storage granaries; the IoT management platform is used to obtain the data transmitted by the network communication layer for decryption processing and to provide information feedback for the processed data; the IoT sensing terminal detection and statistical data are uniformly managed and data analysis and processing are performed. Real-time monitoring, data transmission and data analysis and processing of grain data in the granary are realized, effectively improving the intelligent level and efficiency of grain depot management.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent management of grain depots, and in particular to an intelligent terminal Internet of Things management system for grain depots. Background Art

[0002] Granaries are the base for grain storage and preservation, and their management level is directly related to the safety of national grain reserves. Information systems and artificial intelligence technology are currently important means to strengthen the management of reserve granaries. my country's granary management has achieved full coverage of informatization, thus ensuring that grain is not affected by pests, mildew, oxidation and other factors during storage.

[0003] However, with the rapid growth of the number of intelligent terminal devices installed and applied in grain depots and the rapid expansion of data traffic, the management of these data faces severe challenges. On the one hand, due to the limited capacity of network transmission resources, the terminal devices will cause the data of various intelligent terminal devices to queue up for processing during transmission, resulting in serious lag in the processing of some data. On the other hand, factors such as network fluctuations or network interruptions may cause abnormal values ​​or missing data in the data, which will affect the accuracy and reliability of data processing and analysis. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a grain depot intelligent terminal IoT management system, including an IoT sensing terminal, a network communication layer and an IoT management platform;

[0005] The IoT sensing terminal is used to conduct real-time detection and early warning of the grain storage environment in each granary through the sensor system and related peripherals, and to record the data of grain purchase, storage and sales in the granary; and upload the detection data and statistical data to the IoT management platform through the network communication layer;

[0006] The network communication layer is used to transmit the data uploaded by the IoT sensing terminal. The IoT sensing terminals configured in several storage granaries are clustered and transmitted, and the data is encrypted and transmitted to the IoT management platform.

[0007] The IoT management platform is used to obtain data transmitted by the network communication layer, decrypt it, and provide information feedback on the processed data; it manages IoT sensing terminal detection and statistical data in a unified manner, and performs data analysis and processing;

[0008] The network communication layer performs cluster transmission on the IoT sensing terminals configured in several storage granaries, and the specific method is as follows:

[0009] S1. Cluster the IoT sensing terminals configured in each granary of the granary, determine the number of cluster groups according to the total number of granaries in the granary, classify the IoT sensing terminals configured in each granary into one cluster group, and set the cluster head of each cluster group;

[0010] S2, obtaining detection or statistical data of the IoT sensing terminal corresponding to the cluster head of each cluster group, and transmitting the cluster head data of all cluster groups to the IoT management platform at the same time;

[0011] S3, updating the cluster head of each cluster group, reacquiring the updated cluster head data, and transmitting the cluster heads of all cluster groups simultaneously until the data of all IoT sensing terminals of each cluster group are transmitted to the IoT management platform;

[0012] In updating the cluster heads of each cluster group, priority is given to updating the IoT sensing terminals that are not transmitting data as the cluster heads of the cluster groups;

[0013] If there is an IoT sensing terminal for detecting and warning in the cluster group, the IoT sensing terminal for detecting and warning will be used as the cluster head of the cluster group, and the warning data will be transmitted preferentially;

[0014] If there are three or more IoT sensing terminals with detection and warning in the cluster group, the network communication layer will not update the cluster head of the cluster group, and will transmit the detection data of the IoT sensing terminals with warning in the cluster group;

[0015] S4. After the data transmission of all IoT sensing terminals in a single cluster group is completed, the initial cluster head is restored for cyclic transmission.

[0016] As a specific implementation method, the IoT sensing terminal includes a grain condition detection system and a grain information collection system;

[0017] The grain condition detection system includes a temperature and humidity detection terminal, a gas detection terminal, a water immersion detection terminal, a pest detection terminal and a video monitoring terminal; the temperature and humidity detection terminal is used to monitor the temperature and humidity in the granary in real time; the gas detection terminal is used to detect the oxygen content, carbon dioxide concentration and phosphine gas concentration inside the granary in real time; the water immersion detection terminal is used to monitor whether there is water leakage inside the granary; the pest detection terminal is used to detect pests inside the granary through the photoelectric effect; the video monitoring terminal is used to monitor the interior of the granary and the grain storage status in real time, and use machine recognition technology to identify abnormal granary environment;

[0018] The grain information collection system includes a weighing terminal, a conveying terminal and a scanning terminal; the weighing terminal is used to detect and record the weight of grain when it enters or leaves the granary; the conveying terminal is used to transport the grain stored in the granary; the scanning terminal is used to scan the grain warehouse's entry and exit orders, and record and upload information such as the entry and exit time and quantity of the grain in the granary.

[0019] The network communication layer includes clustering module, communication protocol module and data encryption module;

[0020] The clustering module is used to cluster all IoT sensing terminals in the grain depot, and preferentially transmit data to the IoT sensing terminals corresponding to the cluster heads of each cluster;

[0021] The communication protocol module is used to match the communication interface protocols of different IoT sensing terminals and adapt the network communication protocol during data transmission;

[0022] The data encryption module is used to encrypt the transmitted data.

[0023] The specific operation of the data encryption module for data encryption is:

[0024] The original detection data of the transmitted IoT sensing terminal, the terminal code, and the corresponding granary number are combined into an initial string data;

[0025] Encrypt and convert the initial string data to obtain encrypted data;

[0026] The initial string data is concatenated to the encrypted data backend to form a new string data, and the concatenated new string data is encrypted twice to obtain the final data ciphertext.

[0027] The IoT management platform includes data decryption module, information feedback module, display module and storage module;

[0028] The data decryption module is used to decrypt the encrypted data transmitted by the network communication layer;

[0029] The information feedback module is used to provide information feedback according to the decryption result of the data decryption module, and transmit the feedback result back to the corresponding IoT sensing terminal according to the terminal code and the granary number;

[0030] The storage module is used to store the data successfully decrypted by the data decryption module; the display module is used to display the IoT perception terminal data stored in the storage module.

[0031] The data decryption module performs decryption processing on the encrypted data, and its operation is as follows:

[0032] Decrypt the final data ciphertext to obtain the decrypted string data;

[0033] Splitting the string data according to the splicing identifier, intercepting the string data and splitting the backend data into string data 1 and string data 2, wherein the string data 2 is the intercepted backend data;

[0034] Decrypt string data one to obtain decrypted ciphertext, and compare the decrypted ciphertext with string data two. If the decrypted ciphertext is consistent with string data two, the decryption is successful; if the decrypted ciphertext is inconsistent with string data two, the decryption fails, indicating that the data transmission at the network communication layer is abnormal.

[0035] The IoT management platform confirms network fluctuations through the information feedback module. When the data decryption module decrypts and determines that the decryption is wrong, the information feedback module feeds back the result to the IoT sensing terminal and triggers the IoT sensing terminal to re-upload the data.

[0036] The data decryption module re-decrypts the newly uploaded data. If the decryption is successful, there is no network fluctuation; if the decryption is recognized, it is confirmed that there is a network fluctuation.

[0037] While the IoT management platform is confirming network fluctuations, the IoT sensing terminal also includes a temporary storage device, which is electrically connected to the IoT sensing terminal and is used to temporarily store data of the IoT sensing terminal when the network is interrupted.

[0038] Beneficial effects: The present invention is a grain depot intelligent terminal IoT management system, which clusters and transmits IoT sensing terminals configured in the grain depot through the network communication layer, ensuring the orderly transmission of data from different IoT sensing terminals in all grain depots, preventing congestion of network transmission channels caused by simultaneous transmission of data, and improving the accuracy and efficiency of data transmission. And by encrypting the data for transmission, it ensures the safe transmission and accurate management of grain data in the grain depot.

[0039] In addition, the system can automatically detect and handle network fluctuations based on the accuracy of the transmitted data to ensure the stability of data communication. At the same time, the temporary storage equipped with the IoT sensing terminal can temporarily store data when the network is interrupted to prevent data loss, further enhancing the reliability of the system. The intelligent terminal IoT management system of the grain warehouse realizes real-time monitoring, data transmission and data analysis and processing of grain data in the granary through IoT management of each IoT sensing terminal, providing comprehensive, accurate and reliable data support for grain warehouse management, and effectively improving the intelligence level and efficiency of grain warehouse management. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 This is a structural diagram of the intelligent terminal Internet of Things management system for grain depots. DETAILED DESCRIPTION

[0041] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings.

[0042] See also Figure 1 The present embodiment provides an intelligent terminal IoT management system for a grain depot, including an IoT sensing terminal, a network communication layer and an IoT management platform. The IoT sensing terminal and the IoT management platform are respectively connected to the network communication layer, and work together to realize online monitoring of grain conditions in different grain depots and several storage granaries in each grain depot, as well as dynamic statistics of grain in and out of the grain depot, thereby completing the digital management of grain depot information.

[0043] Among them, the IoT sensing terminal is used to conduct real-time detection and early warning of the grain storage environment in each granary through the sensor system and related peripherals, and to record the data of grain purchase, storage and sales in the granary; and upload the detection data and statistical data to the IoT management platform through the network communication layer. The IoT sensing terminal includes a grain condition detection system and a grain information collection system.

[0044] The grain condition detection system includes a temperature and humidity detection terminal, a gas detection terminal, a water immersion detection terminal, a pest detection terminal and a camera monitoring terminal. The grain condition detection system is used to use a sensor system and corresponding terminal equipment to monitor various environmental information and status information in the granary in real time to ensure safe storage of grain.

[0045] The temperature and humidity detection terminal is used to monitor the temperature and humidity in the granary in real time, strictly control the moisture, temperature and humidity, and realize the long-term storage of grain.

[0046] The gas detection terminal is used to detect the oxygen content, carbon dioxide concentration and phosphine gas concentration inside the granary in real time. By real-time detection of different gas contents and concentrations in the granary, the respiration of grain during storage is suppressed, creating a low-oxygen storage environment to effectively suppress the occurrence of pests and diseases.

[0047] The water immersion detection terminal is used to monitor whether there is water leakage inside the granary to prevent water from entering the granary and causing grain to become moldy and infested with insects.

[0048] The above-mentioned technologies of temperature and humidity detection, gas detection, and water immersion detection are relatively mature in grain monitoring in granaries and will not be elaborated here. The technologies currently used for pest detection are generally acoustic wave detection, near-infrared detection, and electronic nose technology. However, acoustic wave detection is easily interfered by grain accumulation or complex environment, resulting in inaccurate detection results. Although near-infrared detection can monitor pests at a long distance, its detection effect will be greatly reduced under conditions of insufficient optics or obstructed field of view. Electronic nose technology detects chemical signals unique to pests, but is easily interfered by other odors in the granary environment, which also causes inaccurate detection.

[0049] The pest detection terminal of the present invention detects pests inside the granary through the photoelectric effect. A light strip is fixedly arranged along the longitudinal direction inside the granary, and a camera mechanism is electrically connected to the side of the light strip. The light strip is used to emit light to lure pests in the granary. The pests move toward the light source and are captured by the camera mechanism, thereby detecting and confirming the pest and disease phenomenon inside the granary.

[0050] At the same time, the pest detection terminal is also electrically connected to the temperature and humidity detection terminal and the gas detection terminal respectively. The pest detection terminal performs pest warning based on the detection signals of the temperature and humidity detection terminal and the gas detection terminal. The warning method is:

[0051] Obtain a temperature detection signal from a temperature and humidity detection terminal. If the temperature detection signal falls into a temperature range suitable for pests, an identification is performed. The temperature range suitable for pests is 18 to 32°C.

[0052] Obtain the humidity detection signal of the temperature and humidity detection terminal. If the humidity detection signal is greater than or equal to the relative humidity threshold of the air, perform secondary identification.

[0053] Obtain the oxygen content value of the gas detection terminal. If the oxygen content value reaches the oxygen concentration threshold, mark it three times;

[0054] When the primary, secondary and tertiary identifications are triggered at the same time, the pest detection terminal issues a pest warning, that is, there are environmental conditions inside the granary that are suitable for the growth of pests. The pest detection terminal extracts the warning to the IoT sensing terminal through the network communication layer, so that manual inspection can be carried out to achieve early prevention.

[0055] The video surveillance terminal is used to monitor the interior of the granary and the grain storage conditions in real time, and uses machine recognition technology to identify abnormalities in the granary environment, thereby realizing monitoring alarms.

[0056] The grain information collection system includes a weighing terminal, a conveying terminal and a scanning terminal. The grain information collection system is used to collect the inbound and outbound information of grain in the granary in real time, perform data statistics, and ensure the accuracy of grain warehouse information management.

[0057] The weighing terminal is used to detect and record the weight of grain when it enters or leaves the granary; the conveying terminal is used to transport the grain stored in the granary; the scanning terminal is used to scan the entry and exit orders of the granary, and record and upload information such as the entry and exit time and quantity of the grain in the granary.

[0058] The network communication layer is used to transmit the data uploaded by the IoT sensing terminal. By clustering the IoT sensing terminals configured in several storage granaries, the collected and transmitted data is encrypted and transmitted to the IoT management platform. The network communication layer includes a clustering module, a communication protocol module and a data encryption module.

[0059] The clustering module is used to cluster all IoT sensing terminals in the grain depot, and preferentially transmit data to the IoT sensing terminals corresponding to the cluster heads of each cluster;

[0060] The communication protocol module is used to match the communication interface protocols of different IoT sensing terminals and adapt the network communication protocol during data transmission;

[0061] The data encryption module is used to encrypt the data transmitted by the network communication layer.

[0062] The specific operations of data encryption by the data encryption module in the network communication layer are as follows:

[0063] The original detection data of the transmitted IoT sensing terminal, the terminal code, and the corresponding granary number are combined into an initial string data;

[0064] Encrypt and convert the initial string data to obtain encrypted data;

[0065] The initial string data is concatenated to the encrypted data backend to form a new string data, and the concatenated new string data is encrypted twice to obtain the final data ciphertext.

[0066] In order to ensure that the detection or statistical data of each IoT sensing terminal can be transmitted to the IoT management platform in an orderly manner, and to prevent the congestion of the network transmission channel caused by the simultaneous transmission of each data, resulting in data transmission delay, the network communication layer clusters the IoT sensing terminals of several storage granaries to achieve orderly transmission of the detection data of each physical sensing terminal. The specific method is as follows:

[0067] S1. Cluster the IoT sensing terminals configured in each granary of the granary, determine the number of cluster groups according to the total number of granaries in the granary, classify the IoT sensing terminals configured in each granary into one cluster group, and set the cluster head of each cluster group;

[0068] The IoT sensing terminals configured in each granary are a combination of different numbers of arbitrary terminals in the grain condition detection system and the grain information collection system. Therefore, taking each granary in the grain depot as a unit, the IoT sensing terminals configured in each granary are classified into a cluster group belonging to each granary. When data is transmitted at the network communication layer, the relevant data of all granaries can be transmitted simultaneously, and the data of the IoT sensing terminals can be transmitted in an orderly manner according to the cluster head, thereby reducing network transmission resources.

[0069] S2, obtaining detection or statistical data of the IoT sensing terminal corresponding to the cluster head of each cluster group, and transmitting the cluster head data of all cluster groups to the IoT management platform at the same time;

[0070] S3, updating the cluster head of each cluster group, reacquiring the updated cluster head data, and transmitting the cluster heads of all cluster groups simultaneously until the data of all IoT sensing terminals of each cluster group are transmitted to the IoT management platform;

[0071] In updating the cluster heads of each cluster group, priority is given to updating the IoT sensing terminals that are not transmitting data as the cluster heads of the cluster groups;

[0072] If there is an IoT sensing terminal for detecting and warning in the cluster group, the IoT sensing terminal for detecting and warning will be used as the cluster head of the cluster group, and the warning data will be transmitted preferentially;

[0073] If there are three or more IoT sensing terminals with detection and warning in a cluster group, the network communication layer will not update the cluster head of the cluster group, and will transmit the detection data of the IoT sensing terminals with warning in the cluster group at the same time.

[0074] S4. After the data transmission of all IoT sensing terminals in a single cluster group is completed, the initial cluster head is restored for cyclic transmission.

[0075] Because the number of IoT sensing terminal combinations in different cluster groups is different, the number of times the data of all IoT sensing terminals in each cluster group are transmitted is also different. When the network communication layer transmits data, there is no constraint between the granary cluster groups. The network communication layer only needs to realize the simultaneous transmission of the cluster head data of each cluster, which can ensure that the data of the IoT sensing terminals of all granaries are orderly transmitted to the IoT management platform while reducing the occupation of network communication resources.

[0076] The IoT management platform is used to obtain data transmitted by the network communication layer for decryption processing and provide information feedback on the processed data; it uniformly manages the data detected and counted by the IoT sensing terminal and performs data analysis and processing. The IoT management platform includes a data decryption module, an information feedback module, a display module and a storage module.

[0077] The data decryption module is used to decrypt the encrypted data transmitted by the network communication layer, and its operation is as follows:

[0078] Decrypt the final data ciphertext to obtain the decrypted string data;

[0079] Splitting the string data according to the splicing identifier, intercepting the string data and splitting the backend data into string data 1 and string data 2, wherein the string data 2 is the intercepted backend data;

[0080] Decrypt string data one to obtain decrypted ciphertext, and compare the decrypted ciphertext with string data two. If the decrypted ciphertext is consistent with string data two, the decryption is successful; if the decrypted ciphertext is inconsistent with string data two, the decryption fails, indicating that the data transmission at the network communication layer is abnormal.

[0081] The information feedback module is used to provide information feedback based on the decryption result of the data decryption module, and transmit the feedback result back to the corresponding IoT sensing terminal according to the terminal code and granary number.

[0082] The storage module is used to store the data successfully decrypted by the data decryption module; the display module is used to display the IoT sensing terminal data stored in the storage module, so that the operation and maintenance personnel can monitor the grain status of the grain stored in the grain depot online according to the displayed data.

[0083] The IoT management platform can confirm network fluctuations through the information feedback module. The specific operations are as follows:

[0084] When the data decryption module decrypts and determines that the decryption is wrong, the information feedback module feeds back the result to the IoT sensing terminal and triggers the IoT sensing terminal to re-upload the data;

[0085] The data decryption module re-decrypts the newly uploaded data. If the decryption is successful, there is no network fluctuation; if the decryption fails, it is confirmed that there is a network fluctuation. The IoT management platform displays the network fluctuation warning through the display module, reminding the operation and maintenance personnel to conduct on-site network detection to ensure the accuracy of the subsequent grain status detection data.

[0086] While the IoT management platform is confirming network fluctuations, the IoT sensing terminal can confirm network interruptions. If the IoT sensing terminal does not receive feedback within a preset time period after being clustered and collected by the network communication layer, it is confirmed that there is a network interruption and data cannot be uploaded to the IoT management platform.

[0087] In order to ensure the integrity of detection and statistical data, in a specific implementation, the IoT sensing terminal also includes a temporary storage device, which is electrically connected to the IoT sensing terminal and can temporarily store the data of the IoT sensing terminal. After the network transmission at the network communication layer is restored, the temporary storage device will upload the stored data in a unified manner.

[0088] The IoT management platform is also used to evaluate the storage effect of the granary according to the early warning data of the IoT sensing terminal configured in each granary. The evaluation method is as follows:

[0089] Set the frequency thresholds corresponding to abnormal temperature and humidity, gas, pests and diseases, monitoring abnormalities, and weighing abnormalities;

[0090] According to the warning data of the IoT sensing terminal received by the IoT management platform within a unit time, the unit time is 24 hours, the warning frequency is calculated, and the warning frequency is judged against the frequency threshold:

[0091] Temperature and humidity: If the warning frequency of the temperature and humidity detection terminal is greater than or equal to the temperature and humidity warning frequency threshold, the trigger condition flag is set;

[0092] Gas: If the warning frequency of the gas detection terminal is greater than or equal to the gas frequency threshold, the condition flag is triggered;

[0093] Pest and disease abnormality: If the warning frequency of the pest detection terminal is greater than or equal to the pest and disease abnormality frequency threshold, the condition flag is triggered;

[0094] Monitoring abnormality: If the warning frequency of the video monitoring terminal is greater than or equal to the monitoring abnormality frequency threshold, the condition flag is triggered;

[0095] Abnormal weighing: When the actual weight of the weighing terminal does not match the weight recorded in the order of the scanning terminal, a detection warning will be issued. If the warning frequency of abnormal weighing is greater than or equal to the abnormal weighing frequency threshold, the condition mark will be triggered;

[0096] If any one of the conditional identifiers is triggered by the IoT management platform, the storage effect of the granary is assessed as good; if two or more conditional identifiers are triggered, the storage effect of the granary is assessed as poor, and the IoT management platform will issue a manual inspection instruction to manually inspect the corresponding granaries with good or poor storage effects;

[0097] If none of the condition indicators are triggered, the grain storage effect is assessed as excellent, indicating that the grain condition detection in the grain warehouse is normal.

Claims

1. A grain depot intelligent terminal IoT management system, characterized in that: Including IoT sensing terminals, network communication layer and IoT management platform; The IoT sensing terminal is used to conduct real-time detection and early warning of the grain storage environment in each granary through the sensor system, and to record the data of grain in and out of the warehouse; and upload the detection data and statistical data to the IoT management platform through the network communication layer; The IoT sensing terminal includes a grain condition detection system and a grain information collection system; The grain condition detection system includes a temperature and humidity detection terminal, a gas detection terminal, a water immersion detection terminal, a pest detection terminal and a video monitoring terminal; the temperature and humidity detection terminal is used to monitor the temperature and humidity in the granary in real time; the gas detection terminal is used to detect the oxygen content, carbon dioxide concentration and phosphine gas concentration inside the granary in real time; the water immersion detection terminal is used to monitor whether there is water leakage inside the granary; the pest detection terminal is used to detect pests inside the granary through the photoelectric effect; the video monitoring terminal is used to monitor the interior of the granary and the grain storage status in real time, and use machine recognition technology to identify abnormal granary environment; The grain information collection system includes a weighing terminal, a conveying terminal and a scanning terminal; the weighing terminal is used to detect and record the weight of grain when entering or leaving the granary; the conveying terminal is used to transport the grain stored in the granary; the scanning terminal is used to scan the grain storage order, and record and upload the grain storage time and quantity information in the granary; The network communication layer is used to transmit the data uploaded by the IoT sensing terminal. The IoT sensing terminals configured in several storage granaries are clustered and transmitted, and the data is encrypted and transmitted to the IoT management platform. The network communication layer includes a clustering module, a communication protocol module and a data encryption module; The clustering module is used to cluster all IoT sensing terminals in the grain depot, and preferentially transmit data to the IoT sensing terminals corresponding to the cluster heads of each cluster; The communication protocol module is used to match the communication interface protocols of different IoT sensing terminals and adapt the network communication protocol during data transmission; The data encryption module is used to encrypt the transmitted data; The IoT management platform is used to obtain data transmitted by the network communication layer for decryption processing, provide information feedback, and confirm network fluctuations based on the results of information feedback; centrally manage IoT sensing terminal detection and statistical data, and perform data analysis and processing; The IoT management platform includes a data decryption module, an information feedback module, a display module and a storage module; The data decryption module is used to decrypt the encrypted data transmitted by the network communication layer; The information feedback module is used to provide information feedback according to the decryption result of the data decryption module, and transmit the feedback result back to the corresponding IoT sensing terminal according to the terminal code and the granary number; The storage module is used to store the data successfully decrypted by the data decryption module; the display module is used to display the IoT sensing terminal data stored in the storage module; The network communication layer performs cluster transmission on the IoT sensing terminal, and the specific method is as follows: S1. Cluster the IoT sensing terminals of each granary in the granary, determine the number of cluster groups according to the total number of granaries, classify the IoT sensing terminals configured in each granary into one cluster group, and set the cluster head of each cluster group; S2, obtaining detection or statistical data of the IoT sensing terminal corresponding to the cluster head of each cluster group, and transmitting the cluster head data of all cluster groups to the IoT management platform at the same time; S3, updating the cluster head of each cluster group, reacquiring the updated cluster head data, and transmitting the cluster heads of all cluster groups simultaneously until the data of all IoT sensing terminals of each cluster group are transmitted to the IoT management platform; In updating the cluster heads of each cluster group, priority is given to updating the IoT sensing terminals that are not transmitting data as the cluster heads of the cluster groups; If there is an IoT sensing terminal for detecting and warning in the cluster group, the IoT sensing terminal for detecting and warning will be used as the cluster head of the cluster group, and the warning data will be transmitted preferentially; If there are three or more IoT sensing terminals with detection and warning in the cluster group, the network communication layer will not update the cluster head of the cluster group, and will transmit the detection data of the IoT sensing terminals with detection and warning in the cluster group; S4. After the data transmission of all IoT sensing terminals in a single cluster group is completed, the initial cluster head is restored for cyclic transmission.

2. The intelligent terminal IoT management system for grain depots according to claim 1 is characterized in that: The specific operation of the data encryption module for data encryption is: The original detection data of the transmitted IoT sensing terminal, the terminal code, and the corresponding granary number are combined into an initial string data; Encrypt and convert the initial string data to obtain encrypted data; The initial string data is concatenated to the encrypted data backend to form a new string data, and the concatenated new string data is encrypted twice to obtain the final data ciphertext.

3. The intelligent terminal IoT management system for grain depots according to claim 1 is characterized in that: The data decryption module performs decryption processing on the encrypted data, and its operation is as follows: Decrypt the final data ciphertext to obtain the decrypted string data; Splitting the string data according to the splicing identifier, splitting the decrypted string data into string data one and string data two by intercepting the back-end data of the string data, wherein the string data two is the back-end data intercepted by the string data; Decrypt string data one to obtain decrypted ciphertext, and compare the decrypted ciphertext with string data two. If the decrypted ciphertext is consistent with string data two, the decryption is successful; if the decrypted ciphertext is inconsistent with string data two, the decryption fails, indicating that the data transmission at the network communication layer is abnormal.

4. The intelligent terminal IoT management system for grain depots according to claim 1 is characterized in that: The IoT management platform confirms network fluctuations through the information feedback module. When the data decryption module decrypts and determines that the decryption is wrong, the information feedback module feeds back the result to the IoT sensing terminal and triggers the IoT sensing terminal to re-upload the data. The data decryption module re-decrypts the newly uploaded data. If the decryption is successful, there is no network fluctuation; if the decryption fails, it is confirmed that there is a network fluctuation.

5. The intelligent terminal IoT management system for grain depots according to claim 1 is characterized in that: The IoT sensing terminal also includes a temporary memory, which is electrically connected to the IoT sensing terminal and is used to temporarily store data of the IoT sensing terminal when a network is interrupted.

Images