Portable Drone-Mounted Gas Detector

                                                                                                     Drone-mounted Gas Detector

Background Overview

With the increasingly severe air pollution in our country in recent years and the growing proportion of pollutants, the task of air pollution detection and control in China has become heavier. The state has deployed and improved particulate matter and gas detection equipment in most cities, forming a dense ground pollution source detection network combining national control points and provincial control points.

However, we can also clearly see that there is still a large gap between the predictions made based on ground detection data from national control points and the development of actual environmental pollution conditions. In addition, the control measures implemented based on ground monitoring data, such as ground sprinkling, construction site covering, traffic restrictions, industrial production restrictions, boiler retrofitting, and desulfurization and denitrification treatments, have not yielded satisfactory results.

As the third-generation remote sensing technology following aviation and aerospace remote sensing, drone remote sensing technology has advantages such as three-dimensional monitoring, fast response, wide monitoring range, and small terrain interference. It is one of the important development directions for identifying pollution sources and monitoring concentrations in future atmospheric emergencies.

However, due to the limited payload of drones, completing high-precision atmospheric environmental monitoring work requires high-precision sensor payloads. There are not many traditional sensors available due to limitations in volume, weight, etc. Therefore, our company has researched and developed small, lightweight sensor payloads suitable for drone mounting to achieve drone air pollution monitoring and drone-fixed pollutant detection.

Features of Drone-mounted Gas Detector

● The software supports multiple drone manufacturers, including all DJI series

● Thousands of gas sensors can be replaced at any time, and the system features automatic gas type recognition

● Shell design with waterproof, windproof, dustproof, and anti-collision features

● Real-time display and real-time transmission of monitoring data, generating corresponding trend curves

● View historical real-time data, and simultaneously generate curve analysis charts, lists, and chart styles to display historical data for easy comparison and viewing

● Can display longitude and latitude, altitude, aircraft status, temperature, humidity, PM1, PM2.5, PM10, and real-time concentration values of thousands of gases

● Detection accuracy can reach ppb level

● Real-time wireless data transmission to the ground terminal, and also real-time transmission to the server via GPRS

Overview of Drone Gas Detection Payload Parameters

● Applicable: Multi-rotor drones, fixed-wing

● Detectable Gases: PM2.5, PM10, NO2, SO2, CO, O3, VOC, etc. (optional)

● Detection Principle: Electrochemical, Laser

● Weight: 1000 grams (7 parameters)

● Dimensions: 220×145×60mm

● Power Supply: 12-24V

● Data Transmission Mode: 4G/Wireless data link

● Working Environment Temperature: (-30~+60)℃

● Working Environment Humidity: (15 ~ 95)% RH, non-condensing

● Equipment Lifespan: More than 5 years (excluding consumables)

Drone Gas Detection Payload Dimensions Diagram

The software of the ground receiving system is specially designed dedicated software for receiving, decoding, displaying, processing, and reporting the above monitoring and detection data. It is separate from the flight control software and consists of two relatively independent software programs. When the drone flies normally with our company's gas detection equipment, it can detect concentration values in real-time and transmit them back to the ground software for data analysis and display. It also supports multi-detector synchronous data return and processing functions.

The data analysis software platform mainly includes functions such as real-time data display, checking whether the detection environment data status is normal, alarm value points, real-time data value change trends, and historical data query and export, all synchronized in the ground receiving system.

(1) Real-time data display is shown in the figure below:

Data Display Monitoring Large Screen

The software platform can display corresponding detection data and change trends in real-time. It integrates air quality gas sensor data and toxic gas emergency monitoring data into a unified platform for unified management and comprehensive display. Gas sensor data represents different pollution levels with different colors.

(2) Historical data query is shown in the figure below:

Historical Data Query Interface

Perform simple statistical analysis on historical monitoring data of various points, such as daily variation analysis and time series analysis, to help the purchaser save manual analysis time costs, and also help the purchaser understand the basic pollution status.

Flight Cruise Diagram

Through the flight mission function, the Bescloud monitoring platform can specifically display the flight route and real-time concentration display during the flight. It displays via real-time data, pollution concentration levels, etc., and is also compatible with synchronous gimbal display; achieving synchronous display of data and video.

1 System Structure and Working Principle

This system mainly consists of unmanned aerial vehicles, Besian BSA/QT-UAV gas detectors, data links/GPRS, ground stations/servers, and data processing software. Its main function is to detect atmospheric air quality AQI and emergency detection of toxic and harmful gases, with an accuracy of up to 1PPB. It changes the traditional fixed-point detection, making gas detection flexible, fast, accurate, and convenient.

2 Software Implementation of Gas Concentration Data Acquisition

In terms of gas detection, there are tens of thousands of gas types, ranges, accuracies, etc. To simplify user operation and costs, our company has specially designed a series of intelligent sensors. It has a complete set of software information systems, effectively dividing all detectable gas types to achieve a fully intelligent recognition system. Customers can equip different sensors according to different detection scenarios; making drone gas detection very flexible and unaffected by the payload.

Application Fields: Mounted on drones, automobiles, robot inspections, ships, etc.

1. Fire emergency monitoring and investigation of leaking dangerous sources

2. Pipeline leakage inspection

3. Air quality detection

4. Enterprise emission pollution detection

5. Monitoring of pollution gases around chemical, petroleum, and other enterprises

6. Monitoring of exhaust gas emissions from ships at ports and wharves

7. Rapid environmental screening and locking

8. Robot safety inspection in specific areas and special warehouses