Background Status:

The open-air burning of straw belongs to low-temperature burning, incomplete combustion, and its smoke contains a large amount of carbon monoxide, carbon dioxide, nitrogen oxides, photochemical oxidants, and suspended particulate matter, causing air pollution and exacerbating the occurrence of haze to a certain extent. At present, although there are multiple ways to utilize straw in China, the Ministry of Environmental Protection issued the "Management Measures for Straw Burning and Comprehensive Utilization" as early as 1999, and local environmental protection bureaus have also issued corresponding incineration management measures, attaching great importance to incineration work. Every summer and autumn harvest season, the Ministry of Ecology and Environment, the Ministry of Agriculture and Rural Affairs, and local governments invest a large amount of manpower to monitor the burning of straw. However, the low overall utilization rate of straw and the lack of government regulatory personnel result in over 300 million tons of straw being directly burned or thrown away as waste every year, causing great harm to air quality, ecological environment, traffic safety, and fire prevention.

System Overview:

With the power of technology to assist straw burning work, Qingdao Haohai Network Technology Co., Ltd. has launched a straw burning ban and "Blue Sky Project" intelligent warning and monitoring system solution. The system includes a video capture system, fire and smoke search system, fire identification system, communication and control system, video storage, and on-demand system. Based on front-end video monitoring, with automatic fire warning as the condition, and digital communication as the means, it realizes the digitization and modernization of straw burning management.

Blue Sky Guardian straw burning intelligent warning detection system application Haohai TechnologyLin Hai GuardianandNight EyesSeries of video surveillance products and related independently developed onesVideo surveillance and contingency management command software platformBy utilizing modern monitoring and surveillance technologies that are widely used and effective, a straw burning intelligent warning and detection system is constructed, which mainly relies on thermal imaging remote non-contact temperature measurement alarm and is supplemented by visible light smoke recognition alarm. The surrounding environment is monitored remotely in 360 degrees 24/7, and unmanned monitoring and alarm are carried out. By installing binocular monitoring cameras on the iron tower, real-time monitoring of the installation point within a 3-kilometer radius is achieved 24/7 and from all angles. The monitoring point cameras use intelligent smoke and fire recognition and thermal imaging detection technology to automatically analyze and alarm for straw burning behavior. Regardless of day or night, sunny or hazy weather, if fireworks are detected within a 3-kilometer monitoring range of the monitoring station, an alarm will be issued on the command center platform; At the same time, based on the gimbal information and angle information returned by the front-end device, the location of the fire point can be accurately determined, and the fire point can be automatically located and marked on the electronic map, which can effectively control the chaotic situation of straw burning in the open air, achieve the management requirements of "early detection, early mobilization, and early extinguishing" of straw burning, strive to extinguish the fire in the bud or initial stage, and achieve the "digitalization, high-definition, and intelligence" of the environmental protection bureau's monitoring system.

The intelligent warning and detection system for straw burning has been developed based on a 3D GIS engine for related business. Implement basic information management such as monitoring videos, GIS location information, field resources, hazards, material warehouses, and isolation zones, to facilitate users' real-time understanding of the surrounding resources of the fire situation; The precise 3D fire alarm positioning function allows users to accurately and timely lock the location of the fire alarm; The functions of fire spread analysis, dynamic fire situation mapping, emergency command, etc. enable users to accurately command during the firefighting process; The post disaster assessment function assists users in conveniently calculating the losses caused by fires, forming a comprehensive GIS application platform from discovering and locking fire alarms, extinguishing command to disaster damage assessment.

System composition:

The entire system consists of four parts: perception layer, transport layer, platform layer, and application layer. Among them, the perception layer is composed of multiple monitoring devices, including a dual spectrum warning detection integrated machine and meteorological monitoring (optional), which can achieve continuous automatic online monitoring of on-site videos, wind speed, direction, temperature and humidity, and atmospheric pressure. The transmission layer uses wired optical fibers, wireless microwaves, and other methods to transmit monitoring data and images from various monitoring points to the central platform. The platform layer receives real-time data and images from the perception layer, and uses big data analysis to process and organize the information. At the application layer, the visible light and thermal imaging video images of each monitoring point and the entire area, as well as meteorological information, are displayed in real-time in an intuitive and visual manner using 2D/3D GIS. Multiple services are provided, such as locating and promptly alerting the monitored straw burning site, and conducting post event investigation and evidence collection.

System Highlights:

1. Work 24/7.The binocular surveillance camera includes high-definition visible light lens and high-definition thermal imaging lens; Visible light lenses can achieve optical transparency in foggy weather, while thermal imaging lenses can capture images in dark and dark environments at night. The lenses work together to achieve full time and all-weather monitoring.

2. High sensitivity.Capable of eliminating conventional interference sources such as chimneys, water bodies, vehicles, and light shaking, with a horizontal accuracy of ± 0.5 ° and a pitch accuracy of ± 0.01 °, and a positioning error of less than 20 meters.

3. Rapid alarm and low false alarm rate.Discovering fireworks targets, with an alarm time of less than 1 second; The false alarm rate is less than once per day per 10000 hectares.

4. High target positioning accuracy.At a distance of 5KM from the monitoring point, the thermal imaging recognition alarm target area is less than 0.25 ㎡; The target area for high-definition visible light recognition alarm is less than 3 square meters.

5. Fire alarm function.Integrate GIS geographic information system, computer-aided decision-making system, large-scale database system, etc., reflecting the perfect combination of high-tech and emergency linkage business, and linking with social alarm linkage.

6. Auxiliary dispatch and command function.Visually presenting non intuitive report data on an electronic map allows experts and leaders to quickly understand the scope of the event's spread and the location of the resources that need to be called upon.

7. The system reserves various system interfaces.Such as emergency plans, office work, information dissemination, etc.

Through the construction of intelligent monitoring systems, the supervision of straw burning work can be transformed from a "civil defense" to a "technical defense"+"civil defense" mode, which has a positive effect on continuously improving environmental quality and winning the battle to protect the blue sky.

Advantages of the plan:

1. Dual mode detection:The overheating detection and warning integrated machine adopts visible light and thermal imaging dual-mode detection, which can adapt to any environment, especially at night without the need for additional supplementary light sources. By using thermal imaging technology, the monitoring area can be directly detected around the clock.

2. Accurate ultra long distance temperature measurement:Based on the thermal imaging temperature measurement algorithm, remote compensation algorithm, forest fire feature recognition algorithm, and typical non forest fire exclusion algorithm are added to accurately and quickly identify and warn of ongoing forest fires.

3. Dual mode fusion over temperature warning:Pioneering the "Smoke and Fire Recognition Constant Speed Cruise Alarm Algorithm" with secondary recognition technology, it identifies static smoke and fire features during cruising, detects dynamic smoke and fire features through the control stop pan tilt platform after discovering a fire, reduces false alarms, and reduces cruising time to 5 minutes through rapid cruising. Area shielding, smoke parameters, high-definition image recognition, improve alarm accuracy; Plan cruise control tasks to avoid manual intervention in the gimbal, which could cause the cruise to stop and lead to the spread of forest fires, resulting in fires.

4. Accurate fire location based on 3D GIS:By utilizing pan tilt angle feedback and 3DGIS combined with a unique angle area correction algorithm, precise positioning of over temperature points can be achieved.

5. Mature and stable forest fire warning front-end products:Ultra wide working temperature, nitrogen filling design, all metal shell, front smoke and fire recognition&temperature alarm, multi-sensor information feedback, dual lens automatic focusing; Double front, dual aggregation, dual mode.