A gas monitoring system and a gas monitoring method

Abstract

The present application is applicable to the field of gas supervision technology, and proposes a gas supervision system, including terminal equipment, intelligent Internet of Things security gateway and gas supervision platform connected in sequence; the terminal equipment is used to connect to the intelligent Internet of Things security gateway and upload the terminal equipment information data to the intelligent Internet of Things security gateway; the intelligent Internet of Things security gateway is used to encrypt and package the information data of the terminal equipment into encrypted data packets and upload the encrypted data packets to the gas supervision platform using the 5G network; the gas supervision platform includes an integrated smart gas management and control subsystem, a blockchain subsystem, an identity authentication subsystem and a timestamp subsystem; the present application utilizes identity authentication, cryptographic algorithms, blockchain, edge computing combined with 5G technology to ensure equipment safety issues, data security issues, real-time supervision and accident tracing issues in the gas supervision process, and effectively improves the automation, digitization, visualization and intelligence level of gas supervision.

Description

Technical Field

[0001] The present invention relates to the technical field of gas monitoring, and in particular to a gas monitoring system and a monitoring method. Background Art

[0002] Gas is a high-quality, efficient, green, clean, low-carbon energy. Accelerating the development and utilization of gas has promoted coordinated and stable development and built a clean, low-carbon, safe and efficient modern energy system. However, gas accidents have occurred repeatedly in recent years, resulting in many irreparable situations.

[0003] The main reasons for these safety accidents are, on the one hand, that many gas detection-related equipment have not undergone quality inspection and have no security identity tags, making them easy to be maliciously invaded by lawless elements and tampered with the warning thresholds. When gas leaks occur, no warning is given or the warning is not timely. On the other hand, in the process of gas data collection, data transmission, data sharing and use, and data supervision, the gas management department has no data security protection measures in each link, and the data is easily tampered with or stolen. The management department cannot understand the real data in real time, and there are problems such as difficulty in supervision. When a gas safety accident occurs, the management department cannot determine which link has a problem and cannot effectively trace the source. Summary of the invention

[0004] In response to the above problems, the present application provides a gas monitoring system and a monitoring method, which at least solves the problem in the prior art that gas data cannot be traced and traced, and that gas monitoring equipment has no data security protection measures.

[0005] The embodiment of the present application proposes a gas monitoring system, including a terminal device, an intelligent Internet of Things security gateway and a gas monitoring platform connected in sequence;

[0006] A terminal device is used to connect to the smart IoT security gateway and upload the terminal device information data to the smart IoT security gateway;

[0007] Intelligent IoT security gateway, used to encrypt and package terminal device information data into encrypted data packets and upload the encrypted data packets to the gas supervision platform using the 5G network;

[0008] Gas supervision platform, including smart gas control integrated subsystem, blockchain subsystem, identity authentication subsystem and timestamp subsystem;

[0009] A smart gas control integrated subsystem, used to transmit data to the gas supervision platform, the smart gas control integrated subsystem comprising a sensing terminal device and established rules set in the smart gas control integrated subsystem;

[0010] The smart gas control integrated subsystem uses gas network facility information as basic data, gas safety data and emergency handling as supervision content, transmits gas safety data to the gas supervision platform in real time through the terminal equipment, and judges whether the data is normal according to the established rules, and warns of abnormal data;

[0011] Blockchain subsystem, used for reliable data storage;

[0012] An identity authentication subsystem, used to provide identity authentication services for users, devices, gateways, systems, and applications accessing the gas supervision platform;

[0013] The timestamp subsystem is used to provide trusted time services for data.

[0014] In one embodiment, the gas monitoring system further includes an edge layer, which is used to receive the encrypted data packet from the smart IoT security gateway and perform identity authentication on the encrypted data packet, and then upload the authenticated encrypted data packet to the gas monitoring platform.

[0015] In one embodiment, the edge layer includes artificial intelligence services, identity authentication services, timestamp services, blockchain services, and password management services;

[0016] An artificial intelligence service, which constructs an edge IoT model through a preset algorithm to analyze the data of the encrypted data packet;

[0017] Identity authentication service, used to provide identity authentication services for users, devices, gateways, systems, and applications accessing the edge layer;

[0018] A timestamp service to confirm the existence and relative time sequence of the encrypted data packets processed at the edge layer;

[0019] Blockchain service, used to receive data stored on the chain.

[0020] Password management service, used to encrypt data and send it to the gas supervision platform.

[0021] In one embodiment, the gas monitoring system further includes a gas smart cloud monitoring subsystem, and the gas smart cloud monitoring subsystem is connected to an external monitoring network and a gas monitoring platform.

[0022] The present application also provides a gas monitoring method, which is used in the gas monitoring system, comprising:

[0023] Data collection: The terminal device accesses the network for the first time and registers its identity with the smart IoT security gateway; subsequent communications must be authenticated using the identity;

[0024] The smart gas controller issues instructions: after the smart combustible gas detector detects a gas leak, it requests the smart IoT security gateway to encrypt and send instructions to the smart gas controller, and the smart gas controller requests the smart IoT security gateway to send instructions to the smart gas alarm, the smart gas solenoid valve, and the smart fan;

[0025] The smart gas controller uploads data: the smart gas controller encrypts the data and uploads it to the smart IoT security gateway, and the smart IoT security gateway pre-chains the received data based on the blockchain light node;

[0026] The smart IoT security gateway uploads data: the smart IoT security gateway encrypts the data and uploads it to the edge layer using 5G;

[0027] Edge layer uploads data: the data received by the edge layer is decrypted, analyzed, and encrypted, and uploaded to the gas supervision platform;

[0028] On-chain evidence storage: After receiving the data, the gas supervision platform will store the data on the chain in real time through the blockchain service BaaS service.

[0029] In one embodiment, in the step of the smart gas controller sending instructions, the smart combustible gas detector requests the smart IoT security gateway to obtain the public key of the smart gas controller and encrypts and sends the instructions;

[0030] After receiving the encrypted instruction, the smart gas controller uses the private key to decrypt it, and requests the smart IoT security gateway to obtain the public keys of the smart gas alarm, the smart gas solenoid valve, and the smart fan according to the instruction, and then encrypts and sends the instruction;

[0031] The smart gas alarm, the smart gas solenoid valve, and the smart fan use the private key to decrypt after receiving the encrypted instruction.

[0032] In one embodiment, in the step of uploading data by the intelligent gas controller, the data uploaded by the intelligent gas controller includes abnormal data monitored by the combustible gas detector, instruction data issued by the intelligent gas controller, alarm data of the intelligent gas alarm, the solenoid valve closing data, and the fan operation data.

[0033] In one embodiment, in the step of uploading data by the smart IoT security gateway, after the smart IoT security gateway accesses the edge network, it requests the identity authentication service to obtain a random number, uses the smart IoT security gateway's own private key to sign the random number and digital identity, and then sends them to the identity authentication service for identity authentication. Only after the authentication is passed can it access, and at the same time, a session key is generated to establish a secure encrypted link.

[0034] This application is designed to solve the problem that gas data cannot be traced and traced in the prior art, and gas monitoring equipment has no data security protection measures, and has the following beneficial effects:

[0035] 1. The security function of the equipment terminal is enhanced, and the identity identification and security protocol are used to ensure the security and accuracy of the equipment information; it can accurately carry out gas leak warning alarm, etc., reduce the probability of accidents, and ensure human life safety;

[0036] 2. The intelligent IoT security gateway integrates IoT technology and blockchain's distributed data storage, cryptography, consensus mechanism and other technologies to achieve trusted data transmission, calculation and storage;

[0037] 3. Data is encrypted and transmitted throughout the entire process from collection, alarm, triggering, early warning, and evidence storage to ensure data security and reliability;

[0038] 4. Using the characteristics of blockchain, such as openness, transparency, immutability, and traceability, the gas regulatory data can be recorded, verified, and audited, and the entire life cycle of the data can be monitored, so that the data information can be checked and the process can be traced;

[0039] 5. Utilize edge computing technology and deploy edge layer services to solve the problem of centralized data processing pressure on the regulatory platform and meet the requirements of high speed, low latency and business localization in the gas regulatory process;

[0040] 6. Accurately locate and visualize the gas pipeline network using the gas smart gas control integrated subsystem and the gas smart cloud supervision subsystem, and timely and accurate rescue can be carried out in the event of a gas safety accident;

[0041] This application utilizes identity authentication, cryptographic algorithms, blockchain, edge computing and 5G technology to ensure equipment safety, data security, real-time supervision and accident tracing in the gas supervision process, effectively improving the automation, digitization, visualization and intelligence level of gas supervision. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0043] Figure 1 A logical schematic diagram of a gas monitoring system and a monitoring method provided in an embodiment of the present application. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings, i.e., embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0045] It should be noted that when a component is referred to as being "fixed on" or "disposed on" another component, it may be directly or indirectly on the other component. When a component is referred to as being "connected to" another component, it may be directly or indirectly connected to the other component. The orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. is based on the orientation or positional relationship shown in the accompanying drawings and is only for the convenience of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the patent. The terms "first" and "second" are only used for the convenience of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0046] It should also be noted that, in the embodiments of the present application, the same figure mark is used to represent the same component or the same part. For the same parts in the embodiments of the present application, the figure may only mark one of the parts or components as an example. It should be understood that the figure mark also applies to other identical parts or components.

[0047] In order to illustrate the technical solution of the present invention, the following is a description with reference to specific drawings and embodiments.

[0048] Embodiment 1

[0049] refer to Figure 1 An embodiment of the present application provides a gas monitoring system including an intelligent gas controller, an intelligent Internet of Things security gateway and a gas monitoring platform connected in sequence.

[0050] The terminal device is used to connect to the smart IoT security gateway and upload the terminal device information data to the smart IoT security gateway. The terminal device connected to the smart gas controller can be a smart combustible gas detector, a smart gas controller, a smart gas solenoid valve, a smart gas alarm, a smart fan, a smart camera, or other terminal devices commonly used in gas supervision.

[0051] The terminal device is equipped with a device identity module and a security protocol module. Before the terminal device is used, its device ID must be used to generate the device identity of the device on the smart IoT security gateway, and it can only be used after being registered as a legal device. At the same time, during its data transmission process, the data is encrypted and transmitted using a security protocol. The security protocol encapsulates fields such as device address information, device identity, ciphertext, and check code, which can ensure that the gas sensing terminal device and data are safe and not easily invaded and controlled by criminals.

[0052] The smart IoT security gateway is used to encrypt and package the terminal device information data and upload the encrypted data packets to the gas supervision platform using the 5G network. The smart IoT security gateway is an IoT security gateway. The identity identification module and security protocol module are also set up in the smart IoT security gateway to ensure its identity security when receiving the collected data of the terminal device and communicating with the edge layer. At the same time, the smart IoT security gateway also deploys password management and blockchain light node modules, which can upload the data collected by the gas sensing terminal equipment to the chain in real time to prevent data tampering and ensure data security.

[0053] The edge layer is the edge computing platform. The edge layer can pre-process the data from the smart IoT security gateway, thereby reducing the data processing pressure of the gas supervision platform and meeting the high-speed, low-latency and business localization requirements of the gas supervision process. The edge layer is equipped with artificial intelligence, identity authentication, timestamp services, blockchain services, and password management services.

[0054] Artificial intelligence services build edge IoT models through artificial intelligence algorithms, and provide edge image processing data analysis and emergency intelligent response capabilities.

[0055] Identity authentication service provides identity authentication services for applications, devices, personnel, systems, etc. that access the edge layer.

[0056] The timestamp service, based on the public key cryptographic infrastructure technology (PKI), provides accurate and reliable timestamp services to confirm the existence of edge layer processed data at a certain time and the relative time sequence of related operations, providing basic services for time non-repudiation of gas supervision and ensuring the judicial effectiveness of data.

[0057] Blockchain service, based on blockchain technology, realizes secure and reliable data storage, provides real-time chain storage of data throughout the entire process, ensures that data cannot be tampered with, and the process is traceable.

[0058] Password management service: The edge receives data uploaded by the smart IoT security gateway, decrypts, analyzes and processes it through the password management service, and then encrypts it and uploads it to the gas supervision platform.

[0059] The gas supervision platform includes the smart gas control integrated subsystem, the gas smart cloud supervision subsystem, the blockchain subsystem, the identity authentication subsystem and the timestamp subsystem;

[0060] The smart gas control and management integrated subsystem is used to transmit data to the gas supervision platform. The smart gas control and management integrated subsystem includes sensing terminal equipment and established rules set in the smart gas control and management integrated subsystem; the smart gas control and management integrated subsystem uses gas pipeline facility information as basic data, and gas safety data and emergency response as supervision content. Through sensing terminal equipment, the gas safety data is transmitted to the gas supervision platform in real time, and the established rules are used to judge whether the data is normal, and warnings are issued for abnormal data.

[0061] The smart gas cloud supervision subsystem can be included in all aspects of daily gas safety production and operation of gas industry regulatory departments, gas operating enterprises, gas users, gas industry practitioners, and vehicles. It transforms gas safety supervision from traditional offline supervision to online supervision, and realizes real-time, visual, and early warning gas safety supervision, effectively enhancing supervision efforts, standardizing gas industry operations, and promoting safe and stable development of the gas industry. It also provides a scientific basis for safety supervision in the gas industry and assists regulatory departments in making safety decisions.

[0062] The blockchain subsystem realizes secure and reliable data storage based on blockchain technology, provides real-time chain storage of data throughout the entire process to ensure that it cannot be tampered with and the process is traceable. At the same time, it provides reliable and efficient data sharing and exchange services between various functional departments during emergency response.

[0063] The identity authentication subsystem is used to provide identity authentication services for users, devices, gateways, systems, and applications connected to the gas supervision platform, such as identity registration, key management, and trusted identity authentication services.

[0064] The timestamp subsystem is used to provide trusted time services for data.

[0065] The specific use process of the gas monitoring system provided in this application is as follows:

[0066] When a terminal device accesses the network for the first time, it must first register the device identity with the smart IoT security gateway and generate a pair of public and private keys. The smart IoT security gateway uses its private key to sign based on the device ID, generates a device identity, and sends the identity to the corresponding terminal device. At the same time, the device ID and public key are registered on the smart IoT security gateway.

[0067] Before collecting data, the terminal device must first complete identity authentication. Specifically, it first requests the smart IoT security gateway to obtain a random number, uses its own private key to sign the random number and identity identification, and then sends it to the smart IoT security gateway; identity authentication is performed during communication, and after passing, it can access the network and collect data normally, and at the same time generate a session key to establish a secure encrypted link.

[0068] When a gas pipeline or gas equipment leaks, and the gas and air mixture concentration reaches the threshold of the lower explosion limit, the intelligent combustible gas detector first obtains the public key of the intelligent gas controller through the intelligent Internet of Things security gateway, encrypts and sends the command, and the intelligent gas controller uses the private key to decrypt after receiving the command. According to the command, the intelligent Internet of Things security gateway is first requested to obtain the public key of the intelligent gas alarm, intelligent gas solenoid valve, and intelligent fan, and the command is encrypted and sent. After receiving the command, the intelligent gas alarm, intelligent gas solenoid valve, and intelligent fan use the private key to decrypt, triggering the intelligent gas alarm alarm warning, closing the intelligent gas solenoid valve, and turning on the intelligent fan.

[0069] When the smart IoT security gateway first accesses the edge layer, it first generates a public-private key pair, packages its public key and device ID, and requests the edge layer's authentication service to register the device. The edge layer's identity authentication service uses its private key to digitally sign and generate its digital identity, which is then sent to the smart IoT security gateway.

[0070] After the smart IoT security gateway accesses the edge layer, it requests a random number from the edge layer's identity authentication service, signs the random number and digital identity using the smart IoT security gateway's private key, and sends them to the edge layer's identity authentication service for identity authentication. After authentication, the access is successful, and a session key is generated to establish a secure encrypted link.

[0071] The smart gas controller uses the public key of the smart IoT security gateway to encrypt and send data such as instructions for turning on the smart gas alarm, closing the smart gas solenoid valve, and turning on the smart fan. The smart IoT security gateway uses its private key to decrypt, package the original data, encrypt the data packet based on the password management of the smart IoT security gateway, and send it to the gas supervision platform. At the same time, the light node of the blockchain service based on the smart IoT security gateway performs data pre-chain operations.

[0072] Artificial intelligence services, identity authentication services, timestamp services, blockchain services, and password management services are deployed at the edge layer, so that the edge layer has functions such as artificial intelligence, identity authentication, trusted timestamps, blockchain secure evidence storage, and data encryption.

[0073] Through the artificial intelligence algorithm of artificial intelligence services, an edge Internet of Things model is built to provide edge image processing data analysis and emergency intelligent response capabilities; through identity authentication services, an edge Internet of Things device identity security authentication mechanism is built to ensure the security and reliability of the identity of terminal devices; through timestamp services, edge trusted time services are built to provide a trusted time source for terminal device data collection, processing and analysis; through blockchain services, edge data security notarization services are built to ensure that the data collected by terminal devices cannot be tampered with at the edge layer and that the data source is authentic and valid.

[0074] refer to Figure 1 In one embodiment, the intelligent gas controller is used as the control center of the terminal device, which can issue commands to the intelligent combustible gas detector, intelligent gas alarm, intelligent gas solenoid valve, and intelligent fan in real time, and transmit data in encrypted form throughout the process to ensure data security and reliability.

[0075] The smart IoT security gateway collects data such as smart gas alarm alarms, smart gas solenoid valve switches, and smart fan operations, and uploads the data through the 5G network. At the same time, it uses edge computing technology to perform data analysis and identity authentication and uploads the data to the blockchain service in the gas supervision platform for chain storage. The data is transmitted in encrypted form throughout the process to prevent tampering and ensure the authenticity and reliability of the data.

[0076] Embodiment 2

[0077] This embodiment provides an action process of the present application when it is used specifically:

[0078] When the smart combustible gas detector is connected to the network for the first time, it must first register the device's digital identity with the smart IoT security gateway and generate a pair of public and private keys. The smart IoT security gateway uses its private key to sign based on the device ID, generates a device identity, and issues it. At the same time, the device ID and public key are registered on the smart IoT security gateway.

[0079] When the intelligent combustible gas detector detects abnormal gas in the environment, it requests the intelligent IoT security gateway to obtain the public key of the intelligent gas controller and encrypts the abnormal data and sends it to the intelligent gas controller.

[0080] After the intelligent gas controller receives the abnormal data ciphertext sent by the intelligent combustible gas detector, it uses the private key to decrypt it. After determining that there is a gas leak, it requests the intelligent IoT security gateway to obtain the keys of the intelligent gas alarm, intelligent gas solenoid valve, and intelligent fan, and encrypts and sends the instructions. After receiving the instructions, the intelligent gas alarm, intelligent gas solenoid valve, and intelligent fan decrypt them and execute the alarm, close the valve, and open the intelligent fan.

[0081] The intelligent gas controller classifies, packages and encrypts the abnormal data monitored by the intelligent combustible gas detector, the command data issued, the alarm data, the solenoid valve closing data, and the intelligent fan operation data, and uploads them to the intelligent IoT security gateway, while performing pre-chain operations based on the blockchain light node.

[0082] The intelligent IoT security gateway performs identity authentication through the identity authentication service. After passing the authentication, a secure encrypted communication link is established, and the encrypted data is uploaded to the edge layer blockchain service using the 5G network.

[0083] After the smart IoT security gateway passes the edge layer identity authentication, it uploads the encrypted data packet to the gas supervision platform through the 5G network security link.

[0084] After receiving the data, the gas supervision platform will upload the gas abnormality data, smart gas alarm data, smart gas solenoid valve closing data, and smart fan closing data to the blockchain service's BaaS service in real time for evidence storage, ensuring that the data is stored securely and cannot be tampered with.

[0085] This application is designed to solve the problem that gas data cannot be traced and traced in the prior art, and gas monitoring equipment has no data security protection measures, and has the following beneficial effects:

[0086] 1. The security function of the equipment terminal is enhanced, and the identity identification and security protocol are used to ensure the security and accuracy of the equipment information; it can accurately carry out gas leak warning alarm, etc., reduce the probability of accidents, and ensure human life safety;

[0087] 2. The intelligent IoT security gateway integrates IoT technology and blockchain's distributed data storage, cryptography, consensus mechanism and other technologies to achieve trusted data transmission, calculation and storage;

[0088] 3. Data is encrypted and transmitted throughout the entire process from collection, alarm, triggering, early warning, and evidence storage to ensure data security and reliability;

[0089] 4. Using the characteristics of blockchain, such as openness, transparency, immutability, and traceability, the gas regulatory data can be recorded, verified, and audited, and the entire life cycle of the data can be monitored, so that the data information can be checked and the process can be traced;

[0090] 5. Utilize edge computing technology and deploy edge layer services to solve the problem of centralized data processing pressure on the regulatory platform and meet the requirements of high speed, low latency and business localization in the gas regulatory process;

[0091] 6. Accurately locate and visualize the gas pipeline network using the gas smart gas control integrated subsystem and the gas smart cloud supervision subsystem, and timely and accurate rescue can be carried out in the event of a gas safety accident;

[0092] This application utilizes identity authentication, cryptographic algorithms, blockchain, edge computing and 5G technology to ensure equipment safety, data security, real-time supervision and accident tracing in the gas supervision process, effectively improving the automation, digitization, visualization and intelligence level of gas supervision.

[0093] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A gas monitoring method, characterized in that: It includes a gas monitoring system, which includes: terminal equipment, an intelligent Internet of Things security gateway and a gas monitoring platform connected in sequence; The terminal device is used to connect to the intelligent Internet of Things security gateway and upload the information data of the terminal device to the intelligent Internet of Things security gateway; The terminal equipment includes an intelligent combustible gas detector, an intelligent gas controller, an intelligent gas alarm, an intelligent gas solenoid valve, an intelligent fan, and an intelligent camera; The intelligent combustible gas detector is used to detect the gas concentration in the air, and the intelligent combustible gas detector is connected to the intelligent gas controller; The smart gas controller is connected to the smart gas alarm, the smart gas solenoid valve, and the smart fan and is used to issue instructions to the smart gas alarm, the smart gas solenoid valve, and the smart fan; The smart IoT security gateway is used to encrypt and package the information data of the terminal device into an encrypted data packet and upload the encrypted data packet to the gas supervision platform using the 5G network. The smart IoT security gateway is also used to pre-upload the data to the blockchain through a blockchain light node; The gas supervision platform includes a smart gas management and control integrated subsystem, a blockchain subsystem, an identity authentication subsystem and a timestamp subsystem; The smart gas control integrated subsystem is used to transmit data to the gas supervision platform, and the smart gas control integrated subsystem has preset established rules; The smart gas control integrated subsystem uses gas network facility information as basic data, gas safety data and emergency handling as supervision content, transmits gas safety data to the gas supervision platform in real time through the terminal equipment, and judges whether the data is normal according to the established rules, and warns of abnormal data; The blockchain subsystem is used for reliable data storage; The identity authentication subsystem is used to provide identity authentication services for users, devices, gateways, systems, and applications accessing the gas supervision platform; The timestamp subsystem is used to provide a trusted time service for data; The edge layer is used to receive the encrypted data packet from the smart IoT security gateway and perform identity authentication on the encrypted data packet, and then upload the authenticated encrypted data packet to the gas supervision platform; the edge layer includes artificial intelligence services, identity authentication services, timestamp services, blockchain services, and password management services; The artificial intelligence service constructs an edge IoT model through a preset algorithm for analyzing the data of the encrypted data packet; The identity authentication service is used to provide identity authentication services for users, devices, gateways, systems, and applications accessing the edge layer; The timestamp service is used to confirm the existence and relative time sequence of the encrypted data packets processed at the edge layer; The blockchain service is used to receive data stored on the chain; The password management service is used to encrypt data and send it to the gas supervision platform; The gas supervision method further includes: data collection: the terminal device accesses the network for the first time and registers an identity with the smart Internet of Things security gateway; All subsequent communications must be authenticated with the identity identification described above; The smart gas controller issues instructions: after the smart combustible gas detector detects a gas leak, it requests the smart IoT security gateway to encrypt and send instructions to the smart gas controller, and the smart gas controller requests the smart IoT security gateway to send instructions to the smart gas alarm, the smart gas solenoid valve, and the smart fan; The smart gas controller uploads data: the smart gas controller encrypts the data and uploads it to the smart IoT security gateway, and the smart IoT security gateway pre-chains the received data based on the blockchain light node; The smart IoT security gateway uploads data: the smart IoT security gateway encrypts the data and uploads it to the edge layer using 5G; Edge layer uploads data: the data received by the edge layer is decrypted, analyzed, and encrypted, and uploaded to the gas supervision platform; On-chain evidence storage: After receiving the data, the gas supervision platform will store the data on the chain in real time through the BaaS service of the blockchain service.

2. The gas monitoring method according to claim 1, characterized in that: The gas monitoring system also includes a gas smart cloud monitoring subsystem, which is connected to an external monitoring network and the gas monitoring platform.

3. The gas monitoring method according to claim 1, characterized in that: In the step of the smart gas controller sending instructions, the smart combustible gas detector requests the smart IoT security gateway to obtain the public key of the smart gas controller and encrypts and sends the instructions; After receiving the encrypted instruction, the smart gas controller uses the private key to decrypt it, and requests the smart IoT security gateway to obtain the public keys of the smart gas alarm, the smart gas solenoid valve, and the smart fan according to the instruction, and then encrypts and sends the instruction; The smart gas alarm, the smart gas solenoid valve, and the smart fan use the private key to decrypt after receiving the encrypted instruction.

4. The gas monitoring method according to claim 1, characterized in that: In the step of uploading data by the intelligent gas controller, the data uploaded by the intelligent gas controller includes abnormal data monitored by the combustible gas detector, instruction data issued by the intelligent gas controller, alarm data of the intelligent gas alarm, the solenoid valve switch data, and the fan operation data.

5. The gas monitoring method according to claim 1, characterized in that: In the step of uploading data by the smart IoT security gateway, after the smart IoT security gateway accesses the network, it requests the identity authentication service to obtain a random number, uses the smart IoT security gateway's own private key to sign the random number and digital identity, and then sends them to the identity authentication service for identity authentication. After passing the authentication, the access is successful, and a session key is generated at the same time to establish a secure encrypted link.

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