In recent years, the Emergency Management Department and the Fire Rescue Bureau have incorporated big data into the construction of the emergency management system and fire safety management system. Li'an Technology takes the "smart city" construction express to promote the construction of "smart firefighting" such as smart firefighting big data management system . Use information integration and data empowerment to build a smart fire management system , broaden data sources, tap data value, innovate data use, and serve fire management.
Construction of Smart Fire Big Data Management System
In accordance with the "three horizontal and three vertical" structure, the three horizontal core contents of the fire protection data resource database, the fire protection big data platform, and the fire prevention and control intelligent system are built separately, and the standards and regulations, safety guarantees, policies, regulations and management systems are implemented. , Promotion and application and operation and maintenance of three vertical safeguard measures. In order to fully tap the value of the integrated data, clean and filter the massive data gathered in the early stage, integrate the valuable data according to a unified data structure, and associate the data items according to the idea of ​​preventing and destroying.
Application of Smart Fire Management System
Internet of things supervision, unit independent management, grid management, fire supervision and management, intelligent prevention and control, and auxiliary decision-making information support applications.
1. Internet of Things Supervision
On the interface of the fire big data platform, city-level supervisors can obtain account authorization rights. "One picture" grasps the relevant information of the city’s fire distribution, supervision, grid investigation, maintenance inspection and other existing fire protection systems, and dynamically tracks and accesses The equipment status of the firefighting Internet of Things platform company provides a comprehensive understanding of the city-wide firefighting enforcement status, and real-time display of the regional safety index rankings.
2. Independent management by the unit
In the unit management module, the safety index can be obtained by analyzing the basic information of the unit and the perception data of the Internet of Things to assist the daily supervision and execution of fa and the fire safety work of major events. Used in key fire protection units, high-rise building information access. View the unit's building structure, facility information, surrounding water sources, etc. through three-dimensional modeling to provide data support for fire protection and security work.
3. Fire grid management
Fire supervisors can use the grid management module to control the dynamics of the grassroots organization and management in real time, and use the grid inspection results to give a four-color warning of fire risk in the grassroots grid: red, yellow, blue, and green. Grid management can cover provinces, cities, counties, towns, streets, villages, communities, etc.
Established a fire safety grid management system of "grid personnel inspecting hidden dangers, town and street governments urging rectification, and functional departments in accordance with law"
4. Fire supervision and management
The supervision and management module covers the core data of five major systems: fire statistics system, supervision and management system, technical service organization management system, double random and one open supervision and management system. Real-time display, analysis and next in-depth mining of the massive data of each major system in modular and graphical form. Such data will be notified to relevant departments regularly, and after forming a joint working mechanism with the provincial big data center, real-time interaction and joint supervision with relevant industry departments will be achieved.
5. Intelligent prevention and control
Intelligent prevention and control summarizes the various IoT platforms. Including fire detectors, electrical monitoring, water pressure and water volume monitoring and other IOT perception information to realize the remote supervision of the integrity rate of various fire protection facilities, product quality, and human behavior. Access hardware includes: smoke detectors, electrical detectors, water system detectors, video cameras, gas detectors, fire station resources and other key points.
6. Support decision-making information
Auxiliary decision-making information support application, based on various types of fire-fighting data collected on the platform, establish a fire risk index model to provide information support for dynamic supervision of fire hazards, assessment of fire risk requirements, accurate deployment of supervision forces, and auxiliary decision-making for fire fighting and rescue.
The accuracy of fire prevention inspection can be easily increased several times, and key fire safety units can realize 24-hour fire protection supervision-new technologies such as big data, cloud computing, and artificial intelligence are applied to the field of fire protection to create intelligent linkage, upper and lower integration, unified and efficient wisdom Fire protection system.
The smart fire management system has changed the traditional paper work and manual inspection mode. We can monitor various fire safety data indicators online in real time on the mobile APP, and grasp the fire safety dynamics in time. The APP can also analyze the operating status of the equipment, view the failure rate of the equipment, and provide an assessment of the operating status of fire safety facilities. The construction of the smart fire big data system realizes the integration of multiple modules such as online monitoring, remote monitoring, and intelligent inspection, so as to achieve information interaction, data sharing, and interconnection.
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Nox sensor is one of the key components of SCR post-treatment system. It is used to measure the concentration of nitrogen and oxygen in engine exhaust to meet the needs of closed-loop control of engine aftertreatment system and on-board OBD diagnostic system. It can be applied to gas engine or diesel engine. Its structure includes ceramic probe, cable and processing chip controller, which is connected with ECU through can communication.
The effects of Nox sensor damage are as follows:
1. If the Nox sensor is damaged, the diesel control system is in an open-loop state, that is, the emission data cannot be accurately fed back, and the engine control unit cannot accurately adjust the emission. At this time, the vehicle's emission must exceed the standard. If it always exceeds the standard, the service life of tail gas emission treatment equipment will be shortened.
2. Because it is a key component for measuring the excessive exhaust of diesel vehicles. If it is damaged or works poorly, it will directly cause multiple fault lights of the engine to turn on. At the same time, there will be relevant fault storage records in the control unit.
3. The damage of Nox sensor will lead to the disorder of diesel combustion control, resulting in weak acceleration, idle jitter, unable to start and so on.
Once a problem occurs, the Nox sensor needs to be replaced in time. It is usually installed at the rear end of the catalyst in the exhaust pipe.
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