Drones

DJI Matrice 300 RTK

Carried equipment

DJI Zenmuse L1

LiDAR laser scanner with RGB camera. Using LiDAR technology (a method of remotely measuring the distance to the object being scanned using a laser beam), we create point clouds. We then use an RGB camera to add colour to the point cloud. This gives us a very accurate 3D model of reality. Our applications include monitoring traffic accidents, scanning burnt or crumbled objects. It is also planned to be deployed in other projects such as scanning important objects for the needs of the IZS (Integrated Rescue System), where we will create a basis for simulating and planning a crisis scenario.

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DJI Zenmuse H20T

The most commonly used for the need of the IZS (Integrated Rescue System). Combination of a total of 4 different sensors. But there are also plans to integrate it into our inspection system. It has an optical ZOOM camera for detailed monitoring, a thermal camera for finding fire hotspots or searching for people, a laser rangefinder for GPS targeting of important points and counting their distance from the UAV, and a wide-angle camera for a general overview.

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GL60 Spotlight

LED spotlight to assist the IZS (Integrated Rescue System). This is the most commonly used payload at events in the dark. It was created as a replacement for the DJI Z15 Spotlight we have used so far. It now has the ability to adjust its focal length during flight. This allows us to direct the intensity of the light much more precisely on the object of interest. It is fully compatible with the DJI Matrice 210 and DJI Matrice 300.

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Specification

Specification of the DJI Matrice 300 RTK

Maximum flight time	55 minutes
Maximum take-off weight	9 kg
Maximum speed	23 m/s
Maximum wind resistance	15 m/s
IP rating	45
Operation temperatures	-20°C to 50°C
Impact sensors	for 6 directions
Hot-swap batteries	yes

The Matrice 300 RTK has a battery hot-swap function. Thanks to this feature we are able to replace the batteries with new ones in a moment and the UAV is on all the time. The advantage is that all systems, such as RTK and GPS, are working and we do not have to re-initialize them.

Scan

The DJI Matrice 300 RTK is most often deployed for scanning traffic accidents, where we use the DJI Zenmuse H20T or DJI Zenmuse L1 camera. We are then able to provide the Czech Republic Traffic Police with a detailed orthophoto or 3D point cloud of the accident area. The Traffic Police together with forensic experts then use the materials to measure various parameters or simulate the course of the accident.

Scanning is also applied to burnt or otherwise damaged objects. The output is often a 3D point cloud.

Search

In combination of LED spotlight, thermal imaging camera and zoom camera we help the IZS (integrated rescue system) with searching for people. In the case of a missing person, we most often use the thermal camera to search for heat signatures. Both during the day and in the dark. In sunlight we also use the ZOOM camera for detailed searches of suspicious places. At night, we use an LED spotlight. This is used to illuminate the area for other IZS units or to test signal suspicious objects. We simply flash the object and wait for a reaction to see if it is, for example, just an animal that then runs away.

Monitoring

Mainly for the needs of the Riot Police we intervene at various cultural or sporting events where there is a possibility of aggression and other unauthorized activities.

Last but not least, monitoring fires and their spread. This is where we use the DJI Zenmuse H20T camera because of the laser rangefinder, which we can then use in our application to measure the approximate size of the fire.