Smart Forest Fire Warning: Fire Monitoring Web GIS Visualization Platform

Preface

Forest fire is a natural disaster with strong suddenness, great destructiveness and difficulty in handling and rescue. In the first three quarters of 2021, a total of 527 forest fires occurred nationwide, affecting an area of about 2,628 hectares of forest, and 15 people died; 12 grassland fires occurred, affecting an area of about 3,388 hectares of grassland.

Forest fire prevention focuses on prevention. When a fire occurs, it is necessary to use effective and scientific methods and advanced fire fighting equipment to fight it out in time to minimize fire losses.

The traditional method of finding fire usually relies on manual inspection, which is inefficient because most forests are vast and far away from cities. Satellite remote sensing monitoring of forest fires is a relatively common means of forest fire risk monitoring in recent years, with the characteristics of large coverage, timely, rapid, continuous and complete.

effect display

Fire Orientation

The spherical map is presented through the Hightopo self-developed engine HT combined with GIS to display and describe the relevant geographical distribution data in the entire earth's surface space, and then use drones combined with forest cameras to monitor forest fires. The use of modern photogrammetry technology for automatic fire identification can realize comprehensive, detailed and accurate monitoring of forest fire information, and can provide practical decision-making reference information for forest fire early warning and fire fighting command work.

The HT for Web GIS product supports the loading of different map tile services or data, 3DTiles format data of aerial oblique photography real scenes, and different GIS data such as urban building groups. At the same time, combined with the technical advantages of lightweight BIM data, 3D video fusion, and seamless integration of 2D and 3D, the massive POI data, traffic flow data, planning data, status data, etc. are displayed in a variety of visualizations in the GIS system.

The HT 3D interface and the GIS interface can be switched at will by buttons, which are suitable for different usage scenarios.

HT for Web GIS can accurately synchronize with the 3D scene, which not only retains the effects and functions of the GIS engine, but also does not limit the designer's play in the 3D scene, ensuring a good visualization effect during fire rescue.

Through HT for Web GIS, the precise location of the fire location can be realized, and the rapid rescue can be realized. In the GIS interface, the fire point can be accurately determined to a specific county, such as Danba County, Sichuan, and then the fire area can be determined according to the topography.

GIS is usually used in conjunction with GPS. For large-scale, open-air patrol inspections, patrol personnel hold GPS inspection devices, receive GPS satellite positioning information (time, latitude and longitude) in real time, and automatically send them at preset time intervals. Or manually send positioning information to the wireless communication front-end at a specific location. The wireless communication front-end computer transmits the data to the management system platform after receiving the positioning information. The system software adopts the GIS electronic map technology to dynamically display and playback the inspection track, and submit it to the GIS for analysis to obtain the detailed information of the fire point.

The live video accessed through the visual interface can clarify the stage of the forest fire, which is convenient for the arrangement of rescue equipment and personnel. The occurrence process of fire can generally be divided into 3 stages: ① Preheating stage, in the state before combustion. ② Gas combustion stage. As the temperature of the combustible material increases rapidly, the combustible gas is ignited, a yellow-red flame is emitted, and carbon dioxide and water vapor are produced. ③ Charcoal burning stage. Charcoal burning is the burning of carbon particles on the surface, no flames can be seen, only charcoal fire.

Fire Preparedness

Hightopo's large visual screen can intuitively grasp the fire situation, so that managers can take more effective fire fighting measures.

Forest fire control is mainly based on isolation belts, and large-scale fire-fighting equipment such as large-scale fire-fighting aircraft, off-road fire trucks, and turbojet water mist water cannons are used for fire rescue. Through scientific and technological means (such as remote sensing satellites, meteorological radars, airborne thermal imagers, etc.) to predict the wind direction and fire in advance, set up isolation belts and fire extinguishers to intercept them, and begin to encircle after the fire has stabilized.

rescue input

Hightopo's large visualization screen can effectively count and display the data of firefighters, ambulances, medical personnel, firefighting vehicles, helicopters, and drones, which is convenient for managers to deploy personnel and equipment. The use of helicopters, small fixed wings, drones and other related equipment for fire prevention and fire fighting work can play a significant role in time and efficiency.

In the process of fighting forest and grassland fires, the forest aviation firefighting force mainly plays the functions of fire scene reconnaissance and command, personnel and material delivery, aerial sprinkler fire extinguishing and other functions. It has the characteristics of fast response speed, strong maneuverability, wide rescue range and good rescue effect.

For areas with frequent fires, clarify the elements of command structure, force composition, organizational structure, equipment and support measures, continuously improve the level of combat readiness of the team, and maintain a state of readiness to wait and respond quickly.

The medical facilities and police equipment near the fire point can be seen at a glance, which can be combined with the Internet of Vehicles system to quickly deploy rescue vehicles and shorten the rescue time.

Live Rescue

Forest fires are generally classified into three types: surface fires, canopy fires and underground fires. Surface fires: Fires spread along the forest surface and account for about 94% of forest fires. Canopy Fire: Fire spreads along the canopy of trees, mainly caused by surface fires under the action of strong winds. Underground fire: Also known as peat fire or humus fire. It is destructive and can burn all the peat, humus and tree roots in the soil, and is not easy to extinguish.

After the firefighters arrive at the fire scene, the manager can determine the type of fire by calling the camera screen, so that the follow-up rescuers can carry suitable fire-fighting equipment.

As a component library based on the HTML5 standard, HT can seamlessly integrate various multimedia functions of HTML5, support the integration of various video resources to form a unified video stream, and mark camera objects on 2D and 3D situation maps and associate their video signal sources. Scene interaction to retrieve the corresponding monitoring video of the fire scene, to meet the monitoring needs of the operation and maintenance personnel for real-time situational awareness of the scene, historical data retrospective comparison, and emergency response plans.

Fire Statistics

This month's disaster damage and historical fire statistics: detailed data on casualties, forest burning, and economic losses can be counted for traceability. By binding the data of the HT visualization 2D panel and the chart, the fire situation of each month is counted by the display method of the area chart. Through historical data, determine the frequent areas and times of forest fires.

Forest fires are mainly based on prevention, and should actively improve the normalized information communication mechanism with the resident emergency management, forest grass, meteorology and other departments, insist on analyzing and judging daily fire warning information, and weave a dense fire prevention and control network.

escape self-help measures

When encountering a forest and grassland fire, do not choose a random direction and run away blindly, otherwise you will be easily trapped by thick smoke and fire. To correctly judge the wind direction, you must not race with the fire. Once you flee with the wind, it is very easy to be caught up and surrounded by forest and grassland fires.

It is impossible to escape to the top of the mountain. As the smoke rises, the mountain fire will expand faster to the top of the mountain. Cover your mouth and nose with a damp towel and walk upwind, down or sideways, choosing a route with sparse vegetation to escape.

Natural Gas Station Fire

Tupu's visualization system can not only help forest firefighting, but also has a set of solutions combined with the Internet of Vehicles for firefighting management of natural gas stations. Natural gas, as a combustible substance, is very dangerous for natural gas stations with large storage capacity, and its safety requirements are also very high. Pre-planned firefighting lines, personnel rescue plans, etc., simulate on-site firefighting rescues through Hightopo 3D scene simulation, providing reliable and effective information for firefighting rescue work.

flood control 161e118773001a

Using Hightopo's self-developed product HT for Web, combined with GIS, realizes the timely arrangement, timely arrangement, timely rescue and timely rescue of flood control and disaster relief work. In the GIS system, the massive POI data, traffic flow data, planning data, status data, etc. are displayed in a variety of visualizations. According to the collected rainfall information, the arrival time of the flood is deduced, and the community residents and reservoir staff are reminded.

summary

Tupu has always insisted on localization for many years, and the independent research and development core product HT for Web has independent intellectual property rights, does not rely on third-party commercial or open source libraries, and meets the requirements of modern, high-performance, cross-platform (desktop Mouse/mobile Touch /Virtual Reality (VR) data visualization needs.

Based on partial refresh, batch aggregation, image caching, and minimization of DOM elements, the ultimate performance is pursued from the bottom-level design. Components can withstand 10,000 or even 100,000-level data volumes, breaking through the application limits of many traditional industries.

For more industry application examples, please refer to the case link of Software's official website: 161e11877300d5 https://www.hightopo.com/demos/index.html