Gas emergency command system based on GIS and low-delay streaming media communication

Abstract

The invention provides a gas emergency command system based on GIS and low-delay streaming media communication. The gas emergency command system comprises a GIS application module, a low-delay streaming media communication module, a gas emergency field module, a gas emergency command center module, a monitoring playback center module, a gas emergency disposal whole process module, an emergency guarantee module, a statistical report module and an operation management module. According to the invention, GIS accurate positioning and visualization, low-delay streaming media communication real-time audio and video transmission and big data intelligent decision are integrated, and real-time emergency command of gas is realized.

Description

Technical Field

[0001] The present invention relates to the field of emergency command technology in the gas industry, and specifically to a gas emergency command system based on GIS and low-latency streaming media communication, specifically to a gas emergency command system that integrates GIS and low-latency streaming media communication technology and is specially designed for emergency scenarios in the gas industry, aiming to improve emergency response and disposal efficiency. Background Art

[0002] Traditional gas emergency command systems mostly rely on a single communication method or simple geographic location information. When faced with complex and ever-changing emergencies, they often encounter bottlenecks such as communication barriers, information silos, and low command efficiency. With the rapid development of GIS, broadband networks, and streaming media technology, it has become possible to build an efficient and intelligent emergency command system, but existing technologies have failed to optimize the specific needs and operating processes of the gas industry, resulting in insufficient emergency response, inaccurate command and dispatch, poor communication, and difficulty in information sharing in emergencies such as gas leaks and fires. It is difficult to meet the urgent needs of the gas industry for efficient emergency command. In addition, the current streaming media transmission method has high latency and poor stability, cannot flexibly adapt to different scenarios, and cannot achieve high cross-platform compatibility. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a gas emergency command system based on GIS and low-latency streaming media communication. The system is based on GIS (geographic information system) and low-latency streaming media communication technology. Through a highly integrated design for the specific needs and operating processes of the gas industry, it achieves rapid response, precise scheduling and efficient handling in gas emergencies, and significantly improves the intelligence and informatization level of emergency command.

[0004] In order to achieve the above object, the present invention adopts the following technical solution: A gas emergency command system based on GIS and low-latency streaming media communication, including a GIS application module, a low-latency streaming media communication module, a gas emergency site module, a gas emergency command center module, a monitoring playback center module, a gas emergency disposal full process module, an emergency guarantee module, a statistical report module, and an operation management module; The GIS application module includes GIS map and GIS dispatching functions, supports pipe network information access and pipe burst analysis, real-time viewing of the geographic location of on-site disposal personnel and equipment, and realizes map-based visual command and dispatch; The low-latency streaming media communication module includes two main parts: streaming media service and terminal device access. The streaming media service integrates the SRT protocol and WebRTC technology to achieve low-latency, low-traffic and high-stability streaming media services. The SRT protocol is responsible for one-way audio and video stream transmission, and has packet loss recovery, congestion control and adaptive bit rate functions to ensure high-quality transmission in unstable networks and reduce bandwidth consumption. When two-way communication is required, WebRTC supports point-to-point connections through NAT penetration and achieves stable two-way transmission through adaptive network management. The terminal device access function can achieve compatibility with multiple devices and support multiple access protocols, including HLS, DASH, RTSP and RTMP, etc. It can adapt to the access of smart terminals, mobile control balls and vehicle-mounted monitoring equipment to meet the needs of diverse scenarios.

[0005] The gas emergency scene module includes rapid alarm response, first-site real-time video invitation, and combat dispatch; The gas emergency command center module realizes the visualization and precise dispatch of personnel and locations, events and spaces based on GIS maps; The monitoring playback center module provides video live broadcast management for mobile audio and video terminals including smart helmets, inspection instruments, handheld terminals, mobile control balls, and vehicle-mounted monitoring based on low-latency and low-traffic streaming media services; The gas emergency handling full process module includes the entire process of gas emergency from alarm reception to resupply; The emergency support module includes emergency plan management, emergency material management, emergency vehicle management, and rescue team management, providing plans and resource guarantees for dispatching and commanding when emergency events occur; The statistical report module includes data statistics and analysis such as terminal online and offline, rule violations, alarm conditions, fault information, storage warnings, etc., and supports user online time statistics, login details viewing, operation log retrieval and export; The operation management module includes department management, role management, user management, device management, group management, and device APK upgrade management.

[0006] Furthermore, the operating console of the gas emergency command center module realizes the visualization and precise dispatch of personnel and locations, events and spaces based on the GIS map, and realizes personnel visualization, command visualization, real-time command dispatch, and timely response and disposal; when an alarm occurs, the gas emergency command center sends an invitation via SMS to the alarm person to start a real-time video call and upload the on-site situation to the gas emergency command center; the gas emergency command center conducts analysis and remote guidance based on the real-time video, and uses the GIS system to quickly select nearby equipment to form a temporary group, conduct audio and video intercom and task allocation, and realize rapid response and efficient disposal.

[0007] Furthermore, the gas emergency site module realizes real-time video invitation and reporting, positioning services, video calls and intercoms, combat dispatch and group and on-site archiving.

[0008] Furthermore, in the GIS application module, the GIS map enables the gas emergency command center to intuitively see the location of on-site disposal personnel, and directly complete live broadcast and intercom operations on the GIS display terminal; the GIS dispatch function includes event layer, personnel layer, equipment layer, and resource layer functions, and supports map search, target selection, multi-point selection, ranging, and map display mode switching functions, providing the gas emergency command center with comprehensive and accurate on-site information; the GIS application module realizes gas pipeline network data access, and quickly accesses gas pipeline network data by configuring relevant service addresses and authentication information of the gas pipeline network geographic information system; the GIS application module realizes pipe burst analysis.

[0009] Furthermore, the monitoring and playback center module includes a video monitoring center and a data playback center; the video monitoring center realizes the video live broadcast management of mobile audio and video terminals including smart safety helmets, inspection instruments, handheld terminals, mobile control balls, and vehicle-mounted monitoring; the data playback center realizes the query and playback functions of intercom, audio, video, pictures, and trajectories, and supports multi-dimensional retrieval by personnel and files; specific functions include click-and-play equipment, on-demand window switching, pan-tilt control, audio and video, photo playback, and historical trajectory playback.

[0010] Furthermore, the gas emergency handling full process module completes the entire gas emergency handling process from alarm reception to supply restoration, specifically including the alarm reception stage, judgment stage, alarm dispatch stage, rescue stage, and supply restoration stage.

[0011] Furthermore, the operation management module enables the creation of multi-level permission roles, and different administrator accounts can select and assign roles as needed; supports multi-level department creation, user ID creation, department personnel equipment allocation and binding; performs device management, views detailed information of all terminal devices, supports authorized activation and deletion of devices; provides viewing and analysis of the APK upgrade status of devices; performs group management, creates groups, allocates devices, and supports voice intercom for terminal devices in the same group.

[0012] Furthermore, the terminal device access function is the function of the low-latency streaming media communication module, which enables different communication devices to access low-latency, low-traffic streaming media services; terminals that support access include smart terminals, mobile control balls, and vehicle-mounted monitoring.

[0013] Beneficial effects: The present invention brings significant effects and advantages in the field of gas emergency management and disposal, which are mainly reflected in the following aspects: 1. Significantly improve emergency response speed: Through the combination of GIS technology and low-latency streaming media communication, rapid positioning and visualization of emergency events such as gas leaks and fires are achieved. The gas emergency command center can quickly obtain real-time video footage on the scene and conduct precise command based on the map, which greatly shortens the emergency response time and improves the handling efficiency.

[0014] 2. Enhanced command and dispatch capabilities: The system provides a unified operating platform and supports seamless interconnection of multiple communication terminals, including smart helmets, inspection instruments, handheld terminals and other mobile audio and video devices. Through one-click audio and video operation, group fusion conference and other functions, it realizes the coordinated operations of multiple departments and groups, significantly enhancing the flexibility and effectiveness of command and dispatch.

[0015] 3. Customized gas emergency management process: This invention customizes the whole process of gas emergency management according to the characteristics of the gas industry. There are clear operation procedures and guidance for each stage from alarm to restoration of supply to ensure the standardization and efficiency of emergency command.

[0016] 4. Improve the accuracy of emergency dispatch: It integrates rich GIS application functions, such as event layer, personnel layer, equipment layer, etc., so that the gas emergency command center can fully grasp the on-site situation, including personnel distribution, equipment status, resource distribution, etc. This information provides a scientific basis for emergency decision-making and improves the accuracy and timeliness of decision-making.

[0017] 5. Compared with traditional streaming media transmission methods, the present invention has low latency and high stability, can be flexibly adapted to different scenarios, and has high cross-platform compatibility.

[0018] In summary, the present invention innovatively proposes a gas emergency command system that integrates GIS precise positioning and visualization, low-latency streaming media communication real-time audio and video transmission, and big data intelligent decision-making. The system not only uses GIS technology to achieve precise allocation and visual display of emergency resources, but also ensures the instant transmission and sharing of audio and video information through low-latency streaming media communication technology combined with self-developed low-latency streaming media services. At the same time, the system adopts advanced microservice architecture and B / S design mode, giving it a high degree of flexibility and scalability, providing a safer, more efficient and intelligent solution for gas emergency command. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The present invention is a workflow diagram of a gas emergency command system based on GIS and low-latency streaming media communication. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0021] A gas emergency command system based on GIS and low-latency streaming media communication of the present invention includes a GIS application module, a low-latency streaming media communication module, a gas emergency site module, a gas emergency command center module, a monitoring and playback center module, a gas emergency disposal full process module, an emergency guarantee module, a statistical report module, and an operation management module.

[0022] The GIS application module includes GIS map and GIS dispatching functions, supports pipe network information access and pipe burst analysis, can view the geographic location of on-site disposal personnel and equipment in real time, and realize map-based visual command and dispatch.

[0023] The low-latency streaming media communication module includes streaming media communication services and terminal device access. The present invention combines the SRT protocol and WebRTC to provide a low-latency, low-traffic, and highly stable streaming media communication service to solve the problems of high latency and large traffic in the transmission process of traditional streaming media services. The service implements one-way low-latency audio and video streaming based on the SRT protocol to ensure the transmission quality of key information. SRT comes with packet loss recovery and congestion control mechanisms and adaptive bit rate functions, which can ensure high-quality transmission performance, low bandwidth consumption and low latency in unstable networks. In scenarios where two-way real-time audio and video communication is required, WebRTC implements NAT penetration through STUN and TURN services, and can directly perform point-to-point low-latency stable connections. The built-in adaptive network management mechanism of WebRTC adjusts the stream transmission parameters according to changes in network conditions, ensuring that audio and video remain consistent and smooth under different network conditions, thereby improving call quality.

[0024] Based on this streaming media communication service, the terminal device access function can achieve multi-device compatibility and support multiple access protocols. Smart terminals such as smart helmet terminals and smart inspection instrument terminals can be directly accessed through WebRTC to achieve two-way video real-time communication. For mobile control balls and vehicle-mounted monitoring equipment deployed in dynamic environments, use the SRT protocol to access to adapt to network fluctuations, reduce bandwidth usage and provide stable one-way video transmission. In addition, the module is compatible with HTTP streaming protocols such as HLS and DASH, and real-time streaming protocols such as RTSP and RTMP, and can adapt to different types of terminal devices.

[0025] The gas emergency scene module includes alarm rapid response, first-site real-time video invitation, combat dispatch, etc. When an alarm occurs, the gas emergency command center can send a text message to invite the alarm person to start a real-time video call and upload the on-site situation to the gas emergency command center. The gas emergency command center conducts analysis and remote guidance based on the real-time video, and uses the GIS system to quickly select nearby equipment to form a temporary group, conduct audio and video intercom and task allocation, and achieve rapid response and efficient disposal.

[0026] The gas emergency command center module realizes the visualization and precise dispatch of personnel and locations, events and spaces based on GIS maps. The interface integrates voice, message, audio and video, and positioning functions, making it easy for customers to operate in a unified interface.

[0027] The monitoring playback center module provides live video management for mobile audio and video terminals such as smart helmets, inspection instruments, handheld terminals, mobile control balls, and vehicle-mounted monitoring based on low-latency, low-traffic streaming media services.

[0028] The gas emergency handling full process module includes the entire process of gas emergency from alarm reception to resupply.

[0029] The emergency support module includes emergency plan management, emergency material management, emergency vehicle management, rescue team management, etc., providing plans, resources and other guarantees for dispatching and commanding when emergency events occur.

[0030] The statistical report module includes data statistical analysis such as terminal online and offline, rule violations, alarm conditions, fault information, storage warnings, etc., and supports user online time statistics, login details viewing, operation log retrieval and export.

[0031] The operation management module includes department management, role management, user management, device management, (intercom) group management, device APK upgrade management, etc.

[0032] The gas emergency command system based on GIS and low-latency streaming media communication of the present invention realizes the following functions:

[0033] 1. Gas emergency site module: (1) Real-time video invitation and reporting When an alarm occurs, the gas emergency command center expert group can quickly initiate a real-time video invitation. The system automatically sends a text message to the alarm person's mobile phone number through the alarm person's mobile phone number. After the alarm person clicks the link, the real-time video call can be automatically started, and the current alarm location can be uploaded to the gas emergency command center in real time. This function greatly shortens the response time, allowing the gas emergency command center to quickly obtain the on-site situation, conduct accurate analysis and remote guidance.

[0034] (2) Location services During the video call, the alarm person's mobile phone automatically obtains the current location through GIS positioning and reports it to the gas emergency command center. The platform map displays the alarm location in real time. If the location deviation is large, it can be calibrated to the accurate location after confirmation with the alarm person. This function ensures that the gas emergency command center can accurately grasp the on-site situation and provide strong support for subsequent dispatch and disposal.

[0035] (3) Video calls and intercoms The system supports one-to-one and one-to-many two-way video calls. Platform users can see the on-site situation through the phone screen of the alarm user, and the alarm user can also see the platform user through the phone screen. In addition, the system also supports intercom function, which can manage call rights according to the level of intercom users, ensuring fast and orderly communication in emergency situations.

[0036] (4) Combat Deployment and Grouping Gas emergency command center operators can quickly create temporary groups through the GIS interface or create multiple fixed groups through group management, and move devices near the alarm into the group. The device can initiate a one-to-many voice intercom for the current group members, and can also freely switch fixed groups for intercom. This function enables the gas emergency command center to quickly organize forces and efficiently dispatch the scene.

[0037] (5) On-site archive The conversation between the alarm user and the gas emergency command center will be automatically recorded as a video file for archiving. When creating a fixed group, you can choose to save the intercom record. The platform will store and archive the intercom voice of the fixed group to facilitate the subsequent review of the alarm handling specifications.

[0038] 2. Gas emergency command center module: The gas emergency command center console realizes the visualization and precise dispatch of personnel and locations, events and spaces based on GIS maps. The interface integrates voice, message, audio and video, and positioning functions, making it easy for customers to operate in a unified interface. Specific functions include: (1) Personnel visualization: Multiple terminals report their positions in real time, and GIS maps display their positions in real time, thus visualizing personnel distribution. Map zooming is supported to facilitate viewing of terminal distribution.

[0039] (2) Visualized command: Drag a box to the corresponding location on the map to quickly select the terminal and initiate audio and video operations with one click to visualize the on-site situation.

[0040] (3) Real-time command and dispatch: By selecting a terminal based on the map interface, you can easily initiate multi-terminal real-time video monitoring, one-to-one voice intercom / video intercom, group voice intercom, etc.

[0041] (4) Timely response and disposal: Provide early warning methods such as sound, light, and pop-up boxes to respond to alarm calls initiated by terminals as soon as possible.

[0042] 3.GIS application module: The GIS application module includes GIS map and GIS dispatch functions, supports access to pipe network information and pipe burst analysis, can view the geographic location of on-site disposal personnel and equipment in real time, and realize map-based visual command and dispatch.

[0043] (1) GIS map: The gas emergency command center can directly see the location of on-site personnel and complete operations such as live broadcast and intercom directly on the GIS display terminal.

[0044] (2) GIS dispatching function: including event layer, personnel layer, equipment layer, resource layer and other functions, supporting map search, target selection, multi-point selection, distance measurement and map display mode switching, etc., providing comprehensive and accurate on-site information for the gas emergency command center.

[0045] (3) Gas pipeline network data access: The gas pipeline network data can be quickly accessed by configuring the relevant service address and authentication information of the gas pipeline network geographic information system.

[0046] (4) Pipe burst analysis: The pipe burst analysis function enables the system to automatically analyze the valves that need to be closed and the gas usage impact range after marking the pipe burst location on the map, and guide operators to switch in time.

[0047] 4. Monitoring playback center module: The monitoring playback center includes the video monitoring center and the data playback center. The video monitoring center implements the video live broadcast management of mobile audio and video terminals such as smart helmets, inspection instruments, handheld terminals, mobile control balls, and vehicle-mounted monitoring. The data playback center implements the query and playback functions of intercom, audio, video, pictures, and trajectories, and supports multi-dimensional retrieval by personnel and files.

[0048] Specific features include: (1) Click-and-play device: Call the terminal video screen in real time and realize audio and video interaction on demand.

[0049] (2) Switch windows on demand: Supports multiple window layouts, supports simultaneous viewing on multiple terminals, and interacts on demand.

[0050] (3) PTZ control: Supports operations such as focusing, aperture, setting preset direction angles, and zooming in and out on terminal devices with PTZ function.

[0051] (4) Audio, video and photo playback: Supports searching audio and video files by department, terminal user, date, file source, file attributes and other parameters, and can preview and download files online. When playing back data, you can view the location information when the current file was generated, and support notes and dot.

[0052] (5) Historical track playback: Supports viewing the historical track and path playback of the selected terminal, and the terminal's historical behavior is clearly obtained.

[0053] 5. Gas emergency disposal full process module: The entire process of gas emergency response includes the entire process of gas emergency response from alarm reception to resupply, specifically including the alarm reception stage, judgment stage, alarm dispatch stage, rescue stage, and resupply stage. The functions of each stage can be found in the attached figure.

[0054] 6. Emergency support module: The emergency support module includes emergency plan management, emergency material management, rescue team management, etc., providing plans, resources and other guarantees for dispatch and command when emergency events occur.

[0055] (1) Emergency Plan: Paper documents are managed electronically. After the dispatch center initiates the emergency plan, relevant personnel can be notified to handle the emergency according to the steps in the emergency plan.

[0056] (2) Emergency supplies: Manage emergency warehouses and emergency supplies in various warehouses to facilitate the allocation of emergency supplies when emergency incidents occur.

[0057] (3) Rescue Team: Maintain the rescue team, modify the rescue team personnel, and mark the rescue team's skills, etc.

[0058] 7. Statistical report module: Provides statistical analysis of terminal online and offline, rule violations, alarms, fault information, storage warnings, and other data, and can export reports. Supports user online time statistics, login details viewing, operation log retrieval and export.

[0059] 8. Operation management module: Provides department management, role management, user management, device management, (intercom) group management, device APK upgrade management, etc.

[0060] (1) Roles and users: Multi-level permission roles can be created, and different administrator accounts can choose to assign roles as needed. Supports multi-level department creation, user ID creation, department personnel equipment allocation and binding.

[0061] (2) Device management: You can view detailed information of all terminal devices, support authorization activation and device deletion, and provide analysis of the device's APK upgrade status.

[0062] (3) Group management: Create groups, assign devices, and support voice intercom among terminal devices in the same group.

[0063] 9.Terminal access function: The terminal access function is a function of the low-latency streaming media communication module, which mainly realizes the access of different communication devices to low-latency, low-traffic streaming media services. The terminals supported by the present invention include intelligent terminals, mobile control balls, vehicle-mounted monitoring, etc.

[0064] (1) Intelligent terminal access: Smart terminal devices include smart helmet terminals, smart inspection instrument terminals, AR smart glasses, etc., which are suitable for on-site inspection and data collection of the gas emergency command center platform. These devices are accessed through WebRTC, penetrate NAT through STUN and TURN services, and have built-in adaptive network management mechanisms to ensure stable point-to-point connections under different network conditions, achieve two-way audio and video real-time communication with the command center, and support on-site data collection and upload. Smart helmets can collect on-site audio and video in real time, and smart inspection instruments can record gas pipeline conditions in real time through camera and audio functions; AR smart glasses support augmented reality and audio and video data transmission functions; achieving real-time collaboration between on-site operators and the command center can improve the accuracy and efficiency of emergency response.

[0065] (2) Mobile control ball access: The mobile surveillance ball is a comprehensive, portable wireless video emergency command integrated product with ultra-high equipment integration, built-in high-performance lithium battery pack, external high-definition display control terminal, waterproof, shockproof, explosion-proof and other features. It can meet the special requirements of rapid installation under on-site operation monitoring such as gas construction and handling of dangerous situations. It is mainly used in gas construction and sudden dangerous situations. The surveillance ball is accessed through the SRT protocol. The SRT protocol has adaptive bit rate, packet loss recovery function and congestion control mechanism, which can still provide clear and stable video streaming transmission in an environment with large network fluctuations and limited bandwidth.

[0066] (3) Vehicle monitoring access: Vehicle-mounted monitoring is a high-definition network camera with functions such as high-definition image acquisition, wireless transmission, video storage, and cloud mirror control. It has the characteristics of super strong vibration resistance, high reliability, strong environmental adaptability, and flexible installation, and is widely used in vehicle-mounted video monitoring scenarios. Vehicle-mounted monitoring equipment accesses low-latency streaming media communication services through the SRT protocol. The adaptive bit rate and packet loss control functions of the SRT protocol make it suitable for mobile networks. It can dynamically adjust the video transmission rate to reduce bandwidth usage and ensure the continuity and stability of the video stream. Vehicle-mounted monitoring can achieve smooth video backhaul under 4G / 5G networks, and the command center can remotely control the monitoring direction through the cloud to achieve real-time video monitoring. Video data can be stored on demand for subsequent viewing and analysis, providing records for the entire process of emergency events.

[0067] like Figure 1 The following is the logical sequence and key links of the gas emergency command process, including: Start: represents the triggering of an emergency event, such as receiving an alarm call or the system detecting abnormal data.

[0068] Call record receiving report: It means that after the system receives the alarm, the alarm record list is automatically generated, including basic information such as alarm time, location, type, etc.

[0069] Confirmation by the dispatch center: In this phase, the gas emergency command center personnel will review and confirm the specific content of the work order in detail based on the call list, including the work order type (such as gas leak, fire, etc.) and specific location.

[0070] Alarm receiving stage: The dispatch center automatically (according to pre-settings) or manually selects appropriate personnel for dispatch based on the nearby personnel information displayed by the system (based on GIS's nearest location screening), and notifies them to immediately go to the scene to confirm the dangerous situation and conduct on-site monitoring.

[0071] Arrival at the scene: The police officer clicks the "Arrival" button on the APP, and the system automatically records the arrival time.

[0072] Danger confirmation: After the alarm personnel arrive at the scene, they will report the on-site situation to the gas emergency command center through the APP and automatically add them to the emergency member list to facilitate unified dispatch and command by the gas emergency command center.

[0073] Judgment stage: The gas emergency command center conducts a comprehensive assessment based on the on-site situation reported by the alarm receivers and the pipe burst analysis function to analyze the impact of the emergency incident.

[0074] Emergency dispatch: The dispatch center activates the corresponding emergency plan according to the emergency response plan, notifies the relevant emergency teams to handle the situation according to the emergency plan; dispatches appropriate rescue teams to carry out rescue operations, and notifies the customer service center through the system to issue a gas outage notice.

[0075] Alarm phase: After the rescue team is dispatched, the system monitors the movement trajectory of the rescue vehicles or personnel. When they enter the range of 500 meters from the scene, they are automatically marked as "arrived", which makes it easier for the gas emergency command center to grasp the arrival of the rescue forces.

[0076] Rescue stage: The rescue team conducts gas concentration detection, leak source location, isolation and other measures on site. After the rescue is completed, the APP fills in the detection time, uploads on-site photos and concentration data to ensure the transparency and traceability of the rescue process.

[0077] Restoration stage: After confirming that the restoration preparations are complete, the gas emergency command center coordinates with relevant departments to carry out gas restoration operations and restore gas use to users. After the restoration is completed, the customer service center is notified that the restoration has been completed.

[0078] End: The entire emergency command process ends, and the system automatically records and archives relevant data and records to provide a basis for subsequent analysis and summary.

Claims

1. A gas emergency command system based on GIS and low-latency streaming media communication, characterized in that: It includes GIS application module, low-latency streaming media communication module, gas emergency site module, gas emergency command center module, monitoring playback center module, gas emergency disposal full process module, emergency support module, statistical report module, and operation management module; The GIS application module includes GIS map and GIS dispatching functions, supports pipe network information access and pipe burst analysis, real-time viewing of the geographic location of on-site disposal personnel and equipment, and realizes map-based visual command and dispatch; The low-latency streaming communication module includes two main parts: streaming media service and terminal device access. The streaming media service integrates the SRT protocol and WebRTC technology to achieve low-latency, low-traffic and high-stability streaming media services. The SRT protocol is responsible for one-way audio and video stream transmission, and has packet loss recovery, congestion control and adaptive bit rate functions to ensure high-quality transmission in unstable networks and reduce bandwidth consumption. When two-way communication is required, WebRTC supports point-to-point connections through NAT penetration and achieves stable two-way transmission through adaptive network management. The terminal device access function can achieve compatibility with multiple devices and support multiple access protocols, including HLS, DASH, RTSP and RTMP, etc. It can adapt to the access of smart terminals, mobile control balls and vehicle-mounted monitoring equipment to meet the needs of diverse scenarios; The gas emergency scene module includes rapid alarm response, first-site real-time video invitation, and combat dispatch; The gas emergency command center module realizes the visualization and precise dispatch of personnel and locations, events and spaces based on GIS maps; The monitoring playback center module provides video live broadcast management for mobile audio and video terminals including smart helmets, inspection instruments, handheld terminals, mobile control balls, and vehicle-mounted monitoring based on low-latency and low-traffic streaming media services; The gas emergency handling full process module includes the entire process of gas emergency from alarm reception to resupply; The emergency support module includes emergency plan management, emergency material management, emergency vehicle management, and rescue team management, providing plans and resource guarantees for dispatching and commanding when emergency events occur; The statistical report module includes data statistics and analysis such as terminal online and offline, rule violations, alarm conditions, fault information, storage warnings, etc., and supports user online time statistics, login details viewing, operation log retrieval and export; The operation management module includes department management, role management, user management, device management, group management, and device APK upgrade management.

2. According to claim 1, a gas emergency command system based on GIS and low-latency streaming media communication is characterized in that: The operating console of the gas emergency command center module realizes the visualization and precise dispatch of personnel and locations, events and spaces based on the GIS map, realizes personnel visualization, command visualization, real-time command dispatch, and timely response and disposal; when an alarm occurs, the gas emergency command center sends an invitation to the alarm person to start a real-time video call via SMS, and uploads the on-site situation to the gas emergency command center; the gas emergency command center conducts analysis and remote guidance based on the real-time video, and uses the GIS system to quickly select nearby equipment to form a temporary group, conduct audio and video intercom and task allocation, and realize rapid response and efficient disposal.

3. According to claim 1, a gas emergency command system based on GIS and low-latency streaming media communication is characterized in that: The gas emergency scene module realizes real-time video invitation and reporting, positioning service, video call and intercom, combat dispatch and group and scene archiving.

4. According to claim 1, a gas emergency command system based on GIS and low-latency streaming media communication is characterized in that: In the GIS application module, the GIS map enables the gas emergency command center to intuitively see the location of on-site disposal personnel, and directly complete live broadcast and intercom operations on the GIS display terminal; the GIS dispatch function includes event layer, personnel layer, equipment layer, and resource layer functions, and supports map search, frame selection, multi-point selection, distance measurement, and map display mode switching functions, providing the gas emergency command center with comprehensive and accurate on-site information; the GIS application module realizes gas pipeline network data access, and quickly accesses gas pipeline network data by configuring the relevant service address, authentication information, etc. of the gas pipeline network geographic information system; the GIS application module realizes pipe burst analysis.

5. According to claim 1, a gas emergency command system based on GIS and low-latency streaming media communication is characterized in that: The monitoring and playback center module includes a video monitoring center and a data playback center; the video monitoring center realizes the video live broadcast management of mobile audio and video terminals including smart safety helmets, inspection instruments, handheld terminals, mobile control balls, and vehicle-mounted monitoring; the data playback center realizes the query and playback functions of intercom, audio, video, pictures, and trajectories, and supports multi-dimensional retrieval by personnel and files; specific functions include click-and-play equipment, on-demand window switching, pan-tilt control, audio and video, photo playback, and historical trajectory playback.

6. A gas emergency command system based on GIS and low-latency streaming media communication according to claim 1, characterized in that: The gas emergency handling full process module completes the entire gas emergency handling process from alarm reception to supply restoration, specifically including the alarm reception stage, judgment stage, alarm dispatch stage, rescue stage, and supply restoration stage.

7. A gas emergency command system based on GIS and low-latency streaming media communication according to claim 1, characterized in that: The operation management module enables the creation of multi-level permission roles, and different administrator accounts can select and assign roles as needed; Supports multi-level department creation, user ID creation, department personnel equipment allocation and binding; Manage devices, view detailed information of all terminal devices, support authorization activation, and delete devices; provide analysis of device APK upgrade status; manage groups, create groups, assign devices, and support voice intercom for terminal devices in the same group.

8. The gas emergency command system based on GIS and low-latency streaming media communication according to claim 1 is characterized in that: The terminal device access function is the function of the low-latency streaming media communication module, which enables different communication devices to access low-latency, low-traffic streaming media services; the terminals that support access include smart terminals, mobile control balls, and vehicle-mounted monitoring.

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