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Transforming vibrations into electricity to power the Industrial IoT

ReVibe Energy creates systems that transform kinetic energy from vibrations into electricity. Its energy harvesting technology powers sensors and monitoring systems, enabling predictive maintenance and condition monitoring, essential to the industrial world.

Written by Tess Roberts

ReVibe Energy & Protolabs Network
Organization ReVibe Energy
Location Gothenburg, Sweden
Industry Electric power
Product Vibration energy harvesters
Technology CNC machining, 3D printing (MJF)
Materials Aluminum 6061-T6, nylon 11
Why us? Getting CNC machined parts in less than 2 weeks

Where there are continuous vibrations, ReVibe Energy can leverage this energy to power nearly every type of wireless sensor system, including vibration sensors, light sensors and GPS systems. These vibrations are mostly found in industrial sectors like railway, logistics, construction, mining, process manufacturing, shipping, and aviation.

ReVibe Energy reduces the costs of replacing batteries or cables in remote or hard-to-reach locations. The vibration harvesting device also enables expensive industry equipment never goes unmonitored, insusceptible to unforeseen breakages, by powering different types of condition monitoring systems

Harvesting vibrations from trains

One example where ReVibe excels is cargo trains. These trains are off-the-grid - disconnected from electricity and offline. In the past, if you wanted to track these trains through GPS monitoring, the only way possible would have been batteries.

“And, if you have one sensor per wagon, that translates to one battery,” explains Viktor Börjesson, CEO of ReVibe Energy, “There’s about 5 to 10 million cargo wagons globally, and that battery would run out every 2 years. You can imagine how high the costs get to replace those batteries.”

ReVibe’s vibration harvester mounted on a railway track in Germany together with Deutsche Bahn

“Instead, we use vibrations created by the friction between the railway track and the wheel of the train when the train is moving,” shares Viktor, “and we use that vibration because that is, in all its simplicity, kinetic energy.”

With this technology, railway companies can keep track of their assets and understand where they need to perform maintenance on the wheels.

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Custom builds for every environment

Every unit ReVibe makes has to be integrated into a different environment and therefore has different power and space requirements. Meaning for every customer, ReVibe needs to build bespoke parts.

The team starts by designing parts in a CAD software which they test for performance using a proprietary simulation software. If successful, they go on to test 3D printed, experimental parts which they test on a vibration table, in order to expose the parts to similar vibrations they will meet in the real environment. After making the necessary adjustments, ReVibe order CNC milled parts to test out in real life, and continue to repeat this process until the device harvests enough power and is fully integrated into the customers’ environment.

Vibration harvester custom designed for an aviation company

Although each project requires custom parts, certain design considerations remain consistent, including:

  • Weight: light casing, heavy inside mass
    Because the unit needs to be attached to different objects, the outer casing has to be as light and compact as possible. Which is why ReVibe manufactures it from aluminum and keeps it thin. However, the mass inside the unit needs to be heavy, as the weight affects the amount of electricity harvested.
  • Precision
    As the units are usually quite compact, the individual pieces are small and need to be precise, especially when they need to fit into their customers’ existing products. This need for detail is why ReVibe energy chose to CNC machine the majority of parts.

Speed is essential

Core to the business is speed. “We’re a start-up, so we always try to excel when it comes to speed when working with our clients,” shares Viktor, “and as we’re a small organization, we will always be naturally faster than our larger enterprise clients.

“But one area where we would be equally as slow is if we used the same suppliers. That’s why we always try to choose suppliers that can deliver within a week or two maximum to be as quick as possible. We were having issues finding a company that could CNC machine fast at a reasonable price, until we found the network.”

“Plus the transparency in pricing is really big for us,” comments Viktor, “just uploading the STEP files and seeing the price and lead time straight away has been transformational.”

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