Developed by Siemens, in collaboration with the Zaragoza University Hostile Environment Technology Group (GTE), the TEDRA™ device uses rock as a transmission element, providing a much greater level of security, and therefore facilitating, among other things, exploration work and cave rescue operations.
At BARRABES we had the opportunity to attend the presentation of TEDRA™, alongside representatives from specialized underground and rescue groups. After witnessing on-the-spot tests we were convinced that this system would revolutionize security for cavers and underground workers alike.
At BARRABES we had the opportunity to attend the presentation of TEDRA™, alongside representatives from specialized underground and rescue groups. After witnessing on-the-spot tests we were convinced that this system would revolutionize security for cavers and underground workers alike.
The sort of wireless communication we are used to is based on the transmission of electromagnetic waves (more commonly known as “radio waves”). Although able to travel through empty space or the atmosphere, radio waves are, in general, incapable of penetrating even a few metres underground. It’s not surprising then, that wireless communication in underground environments has proven to be a real technological challenge.However, the collaboration between Siemens S.A and the Zaragoza University Hostile Environment Technology Group has produced outstanding results. An advanced digital technology device (TEDRA™) allows voice communication between the surface and underground with no need of any wire connection between either appliance.
This is, without a doubt, an element, which considerably increases the level of security in multiple applications, such as caving exploration, geological study, mining, civil work, the storage of hazardous waste, etc.
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