A resident household gas safety monitoring and early warning system

Abstract

This utility model discloses a residential gas safety monitoring and early warning system, comprising: a gas metering unit, at least one leak alarm unit, a control and communication unit, a higher-level safety management system, and a safety response unit. The gas metering unit outputs an internal early warning signal and a first safety response signal to the control and communication unit when abnormal pipeline data is detected. The leak alarm unit outputs an external early warning signal and a safety response signal to the control and communication unit when abnormal gas data is detected. The control and communication unit outputs the safety response signal to the safety response unit. This utility model establishes wireless communication between the gas metering unit, the leak alarm unit, the safety response unit, and the higher-level safety management system through the control and communication unit, thereby enabling intuitive monitoring and early warning of gas safety through the higher-level safety management system, improving the timeliness, accuracy, and convenience of gas monitoring and early warning.

Description

Technical Field

[0001] This utility model relates to the field of gas transmission and distribution pipeline monitoring technology, and in particular to a residential gas safety monitoring and early warning system. Background Technology

[0002] With the rapid development of urbanization, residents are paying more and more attention to their quality of life and living environment. As a result, the widespread use of natural gas, coal gas and other gas has brought great convenience to people.

[0003] However, on the other hand, users' lack of safety knowledge, improper daily operations, and inappropriate handling of emergencies are significant problems. Gas pipelines have wide coverage and are highly ubiquitous; once a safety issue occurs, it can lead to accidents such as gas poisoning and gas explosions, causing incalculable casualties and economic losses. Current technology mainly relies on manual on-site inspections and maintenance to identify safety hazards. This method is inefficient, costly, and difficult to monitor. Furthermore, gas safety problems have diverse causes, anomalies are difficult to pinpoint, the workload is large, the rate of missed detections is high, and the response is slow. Manual inspections alone cannot provide early warnings, leading to frequent gas safety issues.

[0004] Therefore, existing technologies still need to be improved and developed. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a residential gas safety monitoring and early warning system, which aims to solve the technical problems in the prior art that gas safety problems are difficult to be fully investigated through manual on-site inspections, and that the causes of faults are diverse, abnormal points are difficult to locate, the workload is large, and the rate of missed detection is high.

[0006] The technical solution of this utility model is as follows:

[0007] A residential gas safety monitoring and early warning system includes: a gas metering unit, at least one leak alarm unit, a control and communication unit, a higher-level safety management system, and a safety response unit; wherein,

[0008] The gas metering unit is connected to the control and communication unit and is used to monitor the node data inside the gas pipeline. When abnormal pipeline data is detected, it outputs an internal early warning signal and a first safety response signal to the control and communication unit.

[0009] The leakage alarm unit is connected to the control communication unit and is used to monitor the gas data outside the gas pipeline. When abnormal gas data is detected, it outputs an external warning signal and a second safety response signal to the control communication unit.

[0010] The control communication unit is connected to the safety response unit and the upper-level safety management system respectively. The control communication unit is used to interact with the user and generate a third safety response signal. It is also used to detect the node data, gas data, internal warning signal and external warning signal and feed them back to the upper-level safety management system. The first safety response signal, the second safety response signal and the third safety response signal are output to the safety response unit.

[0011] The upper-level safety management system is used to read and display the node data, gas data, internal early warning signals and external early warning signals;

[0012] The safety response unit is used to isolate the gas when the first safety response signal, the second safety response signal, or the third safety response signal is detected.

[0013] In a further embodiment of this invention, the safety response unit includes a gas flow control structure and at least one ventilation control structure. The gas flow control structure is connected to the control communication unit and is used to shut down the gas pipeline upon detecting the first safety response signal, the second safety response signal, or the third safety response signal. The ventilation control structure is connected to the control communication unit and is used to start exhaust when detecting the first safety response signal, the second safety response signal, or the third response signal.

[0014] A further feature of this invention includes a higher-level revenue management system, which communicates with the gas metering unit via NB-IoT.

[0015] In a further embodiment of this invention, the gas metering unit includes a flow meter, a pressure sensor, a temperature sensor, and a control unit; wherein,

[0016] The flow meter, the pressure sensor, and the temperature sensor are respectively located on the inner wall of the gas pipeline;

[0017] The flow meter is used to collect gas flow data and generate an internal warning signal when abnormal flow is detected.

[0018] The pressure sensor is used to detect pipeline pressure data and generate an internal warning signal when abnormal pressure is detected.

[0019] The temperature sensor is used to detect the ambient temperature data of the pipeline and generate an internal early warning signal when an abnormal temperature is detected.

[0020] The control unit is connected to the flow meter, pressure sensor, temperature sensor and control communication unit respectively, and is used to detect and output the gas flow data, pipeline pressure data and pipeline ambient temperature data, and output a first safety response signal based on the gas flow data, pipeline pressure data and pipeline ambient temperature data.

[0021] In a further embodiment of this invention, the leakage alarm unit is one of a combustible gas alarm, a hazardous gas alarm, a smoke alarm, and a water immersion alarm.

[0022] In a further embodiment of this invention, the flow meter is an ultrasonic flow meter.

[0023] In a further embodiment of this invention, the safety response unit includes a solenoid valve controller and a solenoid valve; wherein,

[0024] The solenoid valve controller is connected to the control communication unit and is used to detect the safety response signal and output the valve control signal;

[0025] The solenoid valve is connected to the solenoid valve controller and is installed inside the gas pipeline. The solenoid valve is used to detect the valve control signal and control the gas flow.

[0026] A further feature of this invention includes a smart home appliance, which is connected to the control and communication unit and used to detect abnormal pipeline data or abnormal gas data. The smart home appliance is at least one of a smart gas stove, a smart range hood, and a smart water heater.

[0027] In a further embodiment of this invention, the control communication unit includes an intelligent gateway, which is connected to the gas metering unit, the leak alarm unit, and the safety response unit via a star-flash connection.

[0028] The utility model discloses a residential household gas safety monitoring and early warning system, which includes: a gas metering unit, at least one leakage alarm unit, a control and communication unit, an upper-level safety management system and a safety response unit; wherein, the gas metering unit is connected to the control and communication unit, and is used for monitoring the node data inside the gas pipeline, and outputting an internal early warning signal and a first safety response signal to the control and communication unit when abnormal pipeline data is detected; the leakage alarm unit is connected to the control and communication unit, and is used for monitoring the gas data outside the gas pipeline, and outputting an external early warning signal and a second safety response signal to the control and communication unit when abnormal gas data is detected; the control and communication unit is respectively connected to the safety response unit and the upper-level safety management system, and the control and communication unit is used for interacting with users and generating a third safety response signal, and is also used for detecting the node data, gas data, internal early warning signal and external early warning signal and feeding them back to the upper-level safety management system, and outputting the first safety response signal, the second safety response signal and the third safety response signal to the safety response unit; the upper-level safety management system is used for reading and displaying the node data, gas data, internal early warning signal and external early warning signal; the safety response unit is used for isolating the gas when the first safety response signal, the second safety response signal or the third safety response signal is detected. Through the topological structure formed between the control and communication unit and the gas metering unit, several leakage alarm units, the safety response unit and the upper-level safety management system, the utility model realizes multi-device linkage gas safety early warning and multi-party collaborative processing, so as to be able to monitor gas safety in real time and conveniently, improve the timeliness and accuracy of gas safety monitoring and early warning and taking safety measures, provide a digital intelligent solution, and comprehensively curb the occurrence of gas safety problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0030] Figure 1 It is a structural block diagram of a residential household gas safety monitoring and early warning system in some preferred embodiments of the present utility model.

[0031] Figure 2 It is a structural block diagram of a residential household gas safety monitoring and early warning system in another part of the preferred embodiments of the present utility model.

[0032] Figure 3 It is a structural block diagram of the gas metering unit in the present utility model.

[0033] Figure 4 This is a schematic diagram of the ultrasonic flow meter in this utility model.

[0034] Figure 5 This is a schematic diagram illustrating the principle of the gas safety problem detection process in this utility model.

[0035] Figure 6 This is a structural block diagram of a residential gas safety monitoring and early warning system in another preferred embodiment of the present invention.

[0036] The following labels in the attached diagram represent: 1. Gas metering unit; 11. Flow meter; 111. Downstream ultrasonic transducer; 112. Upstream ultrasonic transducer; 12. Pressure sensor; 13. Temperature sensor; 14. Control unit; 2. Leakage alarm unit; 3. Control communication unit; 4. Upper-level safety management system; 5. Safety response unit; 6. Upper-level revenue management system; 7. Terminal equipment. Detailed Implementation

[0037] This utility model provides a residential gas safety monitoring and early warning system. To make the purpose, technical solution, and effects of this utility model clearer and more explicit, the following describes this utility model in further detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of this utility model and are not intended to limit this utility model.

[0038] In the implementation methods and claims, unless otherwise specified in the text, the terms "a," "an," "the," and "the" may also include plural forms. If the embodiments of this utility model involve descriptions of "first," "second," etc., such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0039] It should be further understood that the term "comprising" as used in this specification means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. It should be understood that when we say an element is "connected" or "coupled" to another element, it can be directly connected or coupled to the other element, or there may be intermediate elements. Furthermore, "connected" or "coupled" as used herein can include wireless connections or wireless coupling. The term "and / or" as used herein includes all or any unit and all combinations of one or more associated listed items.

[0040] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless specifically defined as herein.

[0041] Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0042] The inventors' research revealed that, in existing technologies, natural gas has permeated all aspects of social production and daily life. Due to its flammable and explosive properties, natural gas is prone to causing various safety accidents. Therefore, ensuring safe use of natural gas at all times is essential. To reduce the incidence of gas accidents, current methods generally rely on manual publicity and supervision, with supervisors checking each node of the gas pipeline. Gas safety depends on subjective will; short-term rectification is effective, but it cannot form a long-term effective management mechanism. Furthermore, in practice, changes in habits can easily lead to missed shut-offs, resulting in accidents. Moreover, gas leaks have diverse causes, and leak points are difficult to locate. Relying primarily on manual on-site inspections is labor-intensive, has a high rate of missed detections, low efficiency, and cannot report gas safety issues immediately.

[0043] To address the aforementioned technical problems in the existing technology, this utility model discloses a residential gas safety monitoring and early warning system, such as... Figure 1As shown, it includes: a gas metering unit 1, at least one leak alarm unit 2, a control communication unit 3, a higher-level safety management system 4, and a safety response unit 5; wherein, the gas metering unit 1 is connected to the control communication unit 3 and is used to monitor node data inside the gas pipeline, and output an internal warning signal and a first safety response signal to the control communication unit 3 when abnormal pipeline data is detected; the leak alarm unit 2 is connected to the control communication unit 3 and is used to monitor gas data outside the gas pipeline, and output an external warning signal and a second safety response signal to the control communication unit 3 when abnormal gas data is detected; the control communication unit 3 is connected to the safety response unit 5 and the higher-level safety management system 4 respectively, and is used to interact with the user and generate a third safety response signal, and is also used to detect node data, gas data, internal warning signals and external warning signals and feed them back to the higher-level safety management system 4, and output the first safety response signal and the second safety response signal to the safety response unit 5; the higher-level safety management system 4 is used to read and display node data, gas data, internal warning signals and external warning signals; the safety response unit 5 is used to isolate gas when the first safety response signal, the second safety response signal or the third safety response signal is detected.

[0044] Specifically, the gas metering unit 1, at least one leak alarm unit 2, the upper-level safety management system 4, and the safety response unit 5 are respectively connected to the control and communication unit 3, forming a topology. That is, the residential gas safety monitoring and early warning system in this application achieves interconnection between devices based on the control and communication unit 3, enabling flexible expansion and facilitating the monitoring and management of gas safety issues. Specifically, the residential gas safety monitoring and early warning system simultaneously monitors potential safety issues both inside and outside the gas pipeline and in the surrounding living space. The living space includes at least kitchens, bathrooms, or balconies where gas appliances such as gas stoves and water heaters or gas pipelines are installed, and where gas safety issues may occur.

[0045] Specifically, for the gas pipeline interior, abnormal pipeline data and internal warning signals can include gas parameters such as abnormally high flow rate, continuous gas consumption, and low flow rate. For the external living space, gas data and external warning signals can include gas parameters such as combustible gas concentration, harmful gas concentration, or water immersion data. Gas metering unit 1 monitors flow data in the gas pipeline and connects to control communication unit 3 via a 5G wireless network. Leakage alarm unit 2 is located in the living space outside the gas pipeline and is used to monitor for gas leaks in the living space, and can also be used to monitor any other potential gas safety hazards. The upper-level safety management system 4, acting as the host computer, communicates with leakage alarm unit 2 and gas metering unit 1 through control communication unit 3, receiving and displaying node data (gas data, internal warning signals, and external warning signals) from leakage alarm unit 2 and gas metering unit 1 in real time. Simultaneously, safety response unit 5 detects the first, second, or third safety response signal and takes safety measures to isolate the gas in the gas pipeline from the living space, reducing the gas content in the user's living space and thus eliminating safety hazards. This application relies on a control communication unit to construct a topology to achieve multi-device monitoring linkage, thereby constructing a multi-device gas safety detection and early warning network, realizing remote gas safety monitoring and emergency response and handling when gas safety problems occur, and ensuring gas safety.

[0046] In addition, such as Figure 2 As shown, the residential gas safety monitoring and early warning system may also include at least one terminal device 7, such as... Figure 6 As shown, terminal device 7 communicates with the upper-level safety management system 4. Users can receive real-time data and early warning information from the upper-level safety management system 4 through terminal device 7. The early warning information is an internal or external early warning signal indicating a gas safety problem. Terminal device 7 can be one of the following electronic terminal devices: computer, smartphone, tablet, router, switch, etc. A small program or software can run on terminal device 7 to interact with the user and generate a fifth safety response signal, which is an enable signal used to control the operation of the safety response unit. Users can remotely control the working status of gas metering unit 1 and safety response unit 5 through terminal device 7, and can also perform safety checks through the small program or software on terminal device 7. For safety check operations, users can set terminal device 7 to automatically start the safety check after a certain preset time, or users can manually start it at any time.

[0047] Further, please refer to Figure 3The gas metering unit 1 includes a flow meter 11, a pressure sensor 12, a temperature sensor 13, and a control unit 14. The flow meter 11, pressure sensor 12, and temperature sensor 13 are located on the inner wall of the gas pipeline. The flow meter 11 collects gas flow data and generates an internal warning signal when an abnormal flow is detected. The pressure sensor 12 detects pipeline pressure data and generates an internal warning signal when an abnormal pressure is detected. The temperature sensor 13 detects pipeline ambient temperature data and generates an internal warning signal when an abnormal temperature is detected. The control unit 14 is connected to the flow meter 11, pressure sensor 12, temperature sensor 13, and control communication unit 3, and is used to detect and output gas flow data, pipeline pressure data, and pipeline ambient temperature data, and output a first safety response signal based on these data.

[0048] Specifically, the gas metering unit 1 is used to monitor, display, and report various data in the gas pipeline. When a gas leak occurs or unauthorized installation occurs, the instantaneous flow rate and pipeline pressure in the gas pipeline will change accordingly. The gas metering unit 1 then reports this to the upper-level safety management system 4, which can then determine whether there is an abnormal flow rate, a minor leak, or gas pipeline meter removal or reverse installation in the user's home based on the instantaneous flow rate. The pressure sensor 12 at the corresponding node can detect gas leaks based on pressure changes and report internal warning signals to the upper-level safety management network accordingly. The method of pressure sensor 12 determining gas leaks through pipeline pressure is existing technology in this field and will not be elaborated further in this application. The gas metering unit 1 can also combine gas flow rate data and pipeline pressure data in the gas pipeline to determine whether there is a leak in the gas pipeline through a dual detection mechanism of flow rate and pressure. That is, if only abnormal flow rate or abnormal pressure is detected within a certain period of time, the gas metering unit 1 considers it an error signal and does not output an internal warning signal to the control communication unit 3. When abnormal flow and abnormal pressure are detected simultaneously within a certain period of time, the gas metering unit 1 can confirm a gas leak through a dual detection mechanism. The gas metering unit 1, upon receiving pipeline pressure data, recognizes a safety issue in the gas pipeline and outputs an internal warning signal. Warning signals may include: overflow, continuous constant flow, low flow, abnormal temperature, and abnormal pressure. Users and monitoring personnel can receive overflow alarms, continuous constant flow alarms, low flow alarms, abnormal temperature alarms, or abnormal pressure alarms through the upper-level safety management system 4 or terminal equipment 7, receiving immediate warnings of potential gas pipeline safety issues.

[0049] Furthermore, the gas metering unit 1 also includes a motor valve. The control communication unit 3 communicates wirelessly with both the gas metering unit 1 and the leak alarm unit 2. Simultaneously, when the safety response unit 5 contains a solenoid valve for isolating gas, the gas metering unit 1 can be linked with the safety response unit 5. Upon detecting a combustible gas leak, the gas metering unit 1 or the leak alarm unit 2 will sound an alarm and send an internal or external warning signal to the control communication unit 3. Upon receiving the alarm signal, the control communication unit 3 will immediately issue a valve-closing command to both the gas metering unit 1 and the safety response unit 5. Upon receiving the command, the gas metering unit 1 will automatically and quickly close the built-in motor valve and the solenoid valve in the safety response unit, cutting off the gas supply. This control of the gas metering unit 1's internal motor valve reduces the gas pipeline valve control delay and improves the response speed to gas safety issues.

[0050] For further details regarding this invention, please refer to [link / reference]. Figure 5 The flow meter 11 is an ultrasonic flow meter. The ultrasonic flow meter 11 includes a downstream ultrasonic transducer 111 and a counter-current ultrasonic transducer 112, which are arranged opposite each other in the gas pipeline. The angle between the ultrasonic wave transmission direction of the downstream ultrasonic transducer 111 and the gas flow direction is a first deflection angle θ. Specifically, the transmission distance between the downstream and counter-current ultrasonic transducers 111 is L, the time for the ultrasonic wave from the downstream ultrasonic transducer 111 to the counter-current ultrasonic transducer 112 is T1, and the time for the ultrasonic wave from the counter-current ultrasonic transducer 112 to be transmitted is T2. The velocity of the fluid being measured is calculated by measuring the time difference caused by the different propagation speeds during forward and reverse propagation. Therefore, for the gas flow velocity V in the pipeline, we have:

[0051] .

[0052] The time-difference measurement method using ultrasonic flow meters enables non-contact measurement without the need for flow interruption or pipe cutting during installation. The transducer can be installed outside the existing pipeline. Furthermore, there is no flow obstruction during measurement and no additional pressure loss, making it suitable for various large circular and rectangular pipelines.

[0053] In a further embodiment of this invention, the control communication unit 3 includes a smart gateway. The smart gateway connects to the gas metering unit 1, the leak alarm unit 2, and the safety response unit 5 via NearLink, and connects to the upper-level safety management system via 5G / IPv6. NearLink is a new generation of short-range wireless communication technology used for data interaction in applications such as smart terminals, smart homes, and smart manufacturing. Testing shows that the connection rate of the internal units of the NearLink-based residential gas safety monitoring and early warning system exceeds 900Mbps (20MHz bandwidth), the transmission latency is 0.02ms, and the communication distance can reach 600 meters. Its functionality is significantly superior to the existing Bluetooth 5.3 technology specifications.

[0054] Specifically, the smart gateway uses 5G intelligent connectivity to achieve real-time data interaction between the smart gateway and the platform, and uses a star-flash connection to connect various supporting devices. It also supports the IPv6 protocol to adapt to different network environments and ensure the stability and security of data communication. In another preferred embodiment of this utility model, the smart gateway can further use 5G NR, LTE-FDD, LTE-TDD, UMTS (HSDPA, HSUPA, HSPA+), WCDMA, and other 5G / 4G / 3G network data connections. The smart gateway is powered by mains electricity and features an LCD display, status lights, and a buzzer, which can be used to display gas usage information, status information, and alarm information. Specifically, when an anomaly is detected, the corresponding status light illuminates, immediately alerting the user to gas safety issues. The smart gateway and the gas metering unit 1 terminal use a star-flash connection for data transmission and have the function of actively initiating connections via terminal buttons and reporting data in abnormal states. After the terminal data is uploaded to the smart gateway, the smart gateway interacts with the upper-level safety management system 4 via the TCP / IP protocol, uploading data every 15 minutes to ensure the real-time nature and accuracy of the data. Simultaneously, the smart gateway can generate and transmit safety response signals for controlling safety response unit 5, and synchronize the commands to the meter in real time after other units in the residential gas safety monitoring and early warning system issue valve-closing commands. The valve-closing command is a safety response signal that controls safety response unit 5 to completely close. The smart gateway supports both IPv4 and IPv6 protocols to adapt to different network environments and ensure the stability and security of data communication.

[0055] Furthermore, such as Figure 5 As shown, the leakage alarm unit 2 is one of a combustible gas detector 21, a hazardous gas detector, a smoke detector 22, and a water immersion detector 23, and several leakage alarm units 2 are respectively connected to the control communication unit 3. When the leakage alarm unit 2 is a combustible gas detector 21, the combustible gas detector can be a laser-type combustible gas detector or a semiconductor-type combustible gas detector.

[0056] In a further embodiment of this invention, the gas monitoring and early warning management unit may also include a smart home appliance. Specifically, the smart home appliance is connected to the control and communication unit and is used to detect abnormal pipeline data or abnormal gas data. The smart home appliance is at least one of a smart gas stove, a smart range hood, and a smart water heater. The smart home appliance is connected to the control and communication unit 3 and is located in the gas usage space. When the smart home appliance is in working condition, it can be regarded as a leak alarm unit 2 and monitor the gas safety in the user's living space.

[0057] Further, please refer to Figure 4 and Figure 6 The safety response unit 5 includes a gas flow control structure 51 and at least one ventilation control structure. The gas flow control structure 51 is connected to the control communication unit 3 and is used to close the gas pipeline upon detecting a first safety response signal, a second safety response signal, or a third safety response signal. The ventilation control structure is also connected to the control communication unit 3 and is used to open the exhaust system upon detecting the first, second, or third safety response signal. The gas flow control structure 51 includes a solenoid valve controller 511 and a solenoid valve 512. The solenoid valve controller 511 is connected to the control communication unit 3 and is used to detect the safety response signal and output a valve control signal. The solenoid valve 512 is connected to the solenoid valve controller 511 and is disposed inside the gas pipeline. The solenoid valve 512 is used to detect the valve control signal and control the gas flow. Similarly, the safety response unit 5 can also be driven by a third, fourth, or fifth safety response signal. The first, second, third, fourth, or fifth safety response signal are enable signals used to control the safety response unit 5 to automatically take various safety measures.

[0058] The ventilation control structure is used to ventilate the indoor living space in the event of a safety problem, thereby removing the existing gas in the space and reducing safety hazards. The ventilation control structure can be any ventilation equipment such as a ventilator 52 or a window opener 53. Several ventilation control structures also form a topology with the control communication unit 3 and receive the first safety response signal, the second safety response signal, the third safety response signal, the fourth safety response signal, or the fifth safety response signal from the control communication unit.

[0059] Internal and external warning signals are the highest safety level signals. Therefore, when the control communication unit 3 receives the first or second safety response signal, both the motor valve and the solenoid valve are forcibly closed to prevent further gas leakage. Users cannot manually restart the motor valve built into the gas metering unit 1 or the solenoid valve in the safety response unit 5 via the control communication unit 3; they must wait for gas company maintenance personnel to inspect and close them. This prevents secondary hazards caused by gas leaks and reduces safety risks. Correspondingly, the third, fourth, and fifth safety response signals are weak valve closing signals. The safety level of weak valve closing signals is lower than that of the first or second safety response signals. Users can control the opening or closing of the solenoid valve in the safety response unit 5 via the control communication unit, the upper-level safety management system, or the terminal device 7.

[0060] For further details regarding this invention, please refer to [link / reference]. Figure 2 It also includes a higher-level revenue management system 6, which communicates with the gas metering unit 1 via NB-IoT. The higher-level revenue management system 6 is used for unified management of gas user files, meter reading, billing, user affairs management, IC card management, gas purchase certificate management, reports, printed vouchers, data chart analysis, and online business processing, achieving compatibility and integration with various meter manufacturers and multiple systems, and realizing unified and standardized gas user management.

[0061] The upper-level safety management system 4 serves as the host computer for the control and communication unit 3. It displays gas safety data transmitted from the control and communication unit 3, including node data, gas data, and internal and external warning signals in case of gas safety issues. The upper-level safety management system 4 can also output a fourth safety response signal, which is an enable signal used to control the operation of the safety response unit. Gas companies can use the upper-level safety management system 4 to build models for hierarchical management and closed-loop tracking of safety inspections and potential hazards. Furthermore, the upper-level safety management system 4 can be linked with local residents, businesses, emergency response command centers, or property management companies to provide advance notification and rectification of early warnings of gas safety issues and hazards. It can detect gas safety problems immediately and notify relevant personnel; or, after an emergency leak, it can immediately notify businesses and surrounding businesses via SMS or telephone for emergency handling and dynamically track the specific details of the gas safety issue. Simultaneously, it is necessary to implement emergency gas shutdowns and proactively assist rescue teams in their rescue efforts.

[0062] The schematic diagram of the control communication unit 3 realizing gas leak alarm through topology is shown below. Figure 5As shown, the control communication unit 3 links the gas metering unit 1, the leak alarm unit 2, and the solenoid valve in the safety response unit 5 to close the valve. It also reports gas safety issues and abnormal signals to the upper-level safety management system 4 via the control communication unit 3. For example, the leak alarm unit 2 uses a gas leak alarm. The control communication unit 3, through a star-shaped flash, links with the gas leak alarm and the solenoid valve controller to monitor the gas concentration. When the gas concentration exceeds a predetermined threshold, the gas leak alarm will issue an audible and visual alarm and send an alarm signal to the control communication unit 3. Upon receiving the alarm signal, the smart gateway will immediately issue a valve-closing command to the gas metering unit 1. Upon receiving the command, the gas metering unit 1 will automatically and quickly close its built-in motor valve, cutting off the gas supply, and upload the valve-closing information to the upper-level safety management system to promptly prevent gas accidents.

[0063] In summary, this application provides a residential gas safety monitoring and early warning system. Ultrasonic smart gas meters, combustible gas alarms, and solenoid valve controllers in the user's living space are connected to a super IoT platform via a 5G smart gateway, enabling real-time data interaction with the upper-level system. Combined with a mobile app or mini-program provided by the gas company, this forms a comprehensive safety system capable of real-time communication, enabling real-time safety sensing, real-time valve closure in case of abnormalities, and online pressure maintenance safety checks. Simultaneously, users can view gas usage, equipment status, and abnormal alarm information through the mobile app or mini-program, gaining a comprehensive understanding of their household gas equipment. When abnormal gas usage occurs in the user's home—such as excessive flow (overflow alarm), continuous constant flow, minimal flow (micro-flow leak warning), abnormal temperature, or abnormal pressure—the ultrasonic smart meter will send the information to the super IoT safety platform in real-time via the 5G smart gateway. The platform will then promptly contact the user via SMS or telephone to inform them of the danger. The system also issues instantaneous flow detection results (overflow alarm, micro-flow leak warning, meter removal, reverse installation alarm), pipeline pressure detection results (differential leak detection), and abnormal pipeline / ambient temperature alarms. Users can directly shut off the meter's valves and solenoid valves via a mobile app or mini-program even when not physically present. Utilizing 5G communication technology, it is online in real time, enabling valve closure at any time. Furthermore, it can intelligently analyze gas usage behavior and identify gas-consuming equipment characteristics through AI algorithms combined with big data technology, accurately locating risk anomalies. Equipped with a digital safety management system platform and the Shenran Safety Home mini-program, it provides visualized risk tracking, enabling "risk identification."

[0064] This utility model discloses a residential gas safety monitoring and early warning system, which produces the following beneficial technical effects:

[0065] The utility model constructs a topology structure with a gas metering unit, a leakage alarm unit, a safety response unit and an upper-level safety management system by controlling a communication unit, so as to realize linkage through the control communication unit, visually monitor and pre-warn gas safety, with a small network delay time, effectively improving the timeliness, accuracy and reliability of the residential domestic gas safety monitoring and warning system.

[0066] By adding a gas metering unit and a leakage alarm unit that communicate with the control communication unit in real time, and using Internet of Things technology, it is possible to monitor data such as pressure, flow, confined space, gas leakage, etc., record and analyze the health data of the pipeline network operation in real time, realize the integration of pipeline network geographical space and operation state information, and the dynamic safety supervision of the pipeline network operation state. Provide reliable, effective and useful automated online monitoring technical means for gas companies, and improve the operation and management efficiency of gas companies.

[0067] It is applicable to the smart kitchen project built by the kitchen smart intelligent gateway. Relying on the smart intelligent gateway, it can realize the monitoring and linkage of multiple kitchen devices, realize remote real-time valve closing and multi-device linkage, and can conduct kitchen active security tests to ensure gas use safety.

[0068] It should be understood that the application of the utility model is not limited to the above examples. For those of ordinary skill in the art, improvements or transformations can be made according to the above description, and all such improvements and transformations should fall within the protection scope of the appended claims of the utility model.

Claims

1. A residential gas safety monitoring and early warning system, characterized in that, include: The system includes a gas metering unit, at least one leak alarm unit, a control and communication unit, a higher-level safety management system, and a safety response unit; among which, The gas metering unit is connected to the control and communication unit and is used to monitor the node data inside the gas pipeline. When abnormal pipeline data is detected, it outputs an internal early warning signal and a first safety response signal to the control and communication unit. The leakage alarm unit is connected to the control communication unit and is used to monitor the gas data outside the gas pipeline. When abnormal gas data is detected, it outputs an external warning signal and a second safety response signal to the control communication unit. The control communication unit is connected to the safety response unit and the upper-level safety management system respectively. The control communication unit is used to interact with the user and generate a third safety response signal. It is also used to detect the node data, gas data, internal warning signal and external warning signal and feed them back to the upper-level safety management system. The first safety response signal, the second safety response signal and the third safety response signal are output to the safety response unit. The upper-level safety management system is used to read and display the node data, gas data, internal early warning signals and external early warning signals; The safety response unit is used to isolate the gas when the first safety response signal, the second safety response signal, or the third safety response signal is detected.

2. The residential gas safety monitoring and early warning system according to claim 1, characterized in that, The safety response unit includes a gas flow control structure and at least one ventilation control structure. The gas flow control structure is connected to the control communication unit and is used to shut off the gas pipeline upon detecting the first safety response signal, the second safety response signal, or the third safety response signal. The ventilation control structure is connected to the control communication unit and is used to start exhaust when the first safety response signal, the second safety response signal, or the third response signal is detected.

3. The residential gas safety monitoring and early warning system according to claim 1, characterized in that, It also includes a higher-level revenue management system, which communicates with the gas metering unit via NB-IoT.

4. The residential gas safety monitoring and early warning system according to claim 1, characterized in that, The gas metering unit includes a flow meter, a pressure sensor, a temperature sensor, and a control unit; wherein, The flow meter, the pressure sensor, and the temperature sensor are respectively located on the inner wall of the gas pipeline; The flow meter is used to collect gas flow data and generate an internal warning signal when abnormal flow is detected. The pressure sensor is used to detect pipeline pressure data and generate an internal warning signal when abnormal pressure is detected. The temperature sensor is used to detect the ambient temperature data of the pipeline and generate an internal early warning signal when an abnormal temperature is detected. The control unit is connected to the flow meter, pressure sensor, temperature sensor and control communication unit respectively, and is used to detect and output the gas flow data, pipeline pressure data and pipeline ambient temperature data, and output a first safety response signal based on the gas flow data, pipeline pressure data and pipeline ambient temperature data.

5. The residential gas safety monitoring and early warning system according to claim 1, characterized in that, The leakage alarm unit is one of the following: combustible gas alarm, hazardous gas alarm, smoke alarm, and water immersion alarm.

6. The residential gas safety monitoring and early warning system according to claim 4, characterized in that, The flow meter is an ultrasonic flow meter.

7. The residential gas safety monitoring and early warning system according to claim 2, characterized in that, The gas flow control structure includes a solenoid valve controller and a solenoid valve; wherein... The solenoid valve controller is connected to the control communication unit and is used to detect the safety response signal and output the valve control signal; The solenoid valve is connected to the solenoid valve controller and is installed inside the gas pipeline. The solenoid valve is used to detect the valve control signal and control the gas flow.

8. The residential gas safety monitoring and early warning system according to claim 1, characterized in that, It also includes smart home appliances, which are connected to the control and communication unit and used to detect abnormal pipeline data or abnormal gas data. The smart home appliances are at least one of smart gas stoves, smart range hoods and smart water heaters.

9. The residential gas safety monitoring and early warning system according to claim 1, characterized in that, The control communication unit includes a smart gateway, which is connected to the gas metering unit, the leak alarm unit, and the safety response unit via StarFlash, and is connected to the upper-level safety management system via 5G / IPv6.

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