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 Unmanned Aerial Vehicle (UAV) Spot
Jakub Karas
Jakub Karas
co-owner, UAS manager in UPVISION, Director in Czech Unmanned Aerial Alliance

Thermal mapping highways and bridges in Czech Republic by UAV

 
December 11th, 2014 by Jakub Karas

Czech company UPVISION (the largest unmanned aerial system company in the Czech Republic) in collaboration with The Road and Motorway Directorate of the Czech Republic (RSD), conducted in September 2014, thermal mapping and damage control decks on the highway D3, namely the closed sections of the bridges Koberný, Čekanice and 10 km section of higway.

hexacopter

Hexacopter with thermal camera, Jakub Karas on the left (UPVISION)

The subjects were using non-destructive methods using thermal imaging differential heating of the deck. Small thermal camera was placed on a special hexacopter and mapping was performed from various heights to determine the needed critical locations and for the control. Everything was carried out under specific conditions (air temperature, road temperature, cloudiness etc.).
Thus, it was revealed damage to the road, the location of the insulation or drainage, which shows different temperature. Every image with overlaps is placed directly in the coordinates and can therefore places that are not visible to the trace and draw their exact location, either on the ground online or on a map.

online monitoring from UAV

Monitor with online transmitting the image from thermalcamera on UAV (UPVISION)

Mapping from the air can monitor the road more quickly at a high angle shot. In addition, thermal imaging is visible online at the monitor on the ground and it can be easily mark critical points in terrain identified for repair.
The actual movement of the drone is possible to plan and moving is fully automatic or can be manually controlled remotely over the necessary places.

UAV inspection

UAV flight over critical points on the highway bridge (RSD)

UAV flights were for mapping all found bulges while thermography record their actual shape below the surface, and identification of other bulges that have not yet been found and are not a common sight to see.

thermo bulges_gis

Thermal image shows bulges and expansion joints between isolation 8 cm below the surface (UPVISION)

Also on thermal image can be seen an isolation, that is about 8 cm below the surface. On the thermal image showing expansion joints with higher temperature.
RMD this modern way fairly easily detected before taking over buildings or during reconstruction or whether the building is fine, or effectively map out the locations to repair or complaint.

This project is included in project from Jakub Karas (UAS manager and partner UPVISION) with name “Precision mapping line constructions by UAS”, with which got 3rd place in regional round European Satellite Navigation Competition 2014 (Galileo Masters), from Ministry of Transport in Czech Republic.

ESNC label_2014_czech3rd

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One Response to “Thermal mapping highways and bridges in Czech Republic by UAV”

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