 So we're here with a Fraunhofer about the energy harvesting system. So hello, so who are you? I'm Peter from Fraunhofer and What are you wearing on your wrist right here? This is actually a wristband, which is powered by thermoelectric generators So there's no battery. No, no battery Thermoelectric so the heat from your body. Yeah, the heat from your body is used with the help of So-called thermo generator and the thermo generator produces a very low voltage a very small voltage And we have developed special power management circuits to upconvert that voltage so that we are able to supply any Commercial electronics in this case. We're using a Bluetooth low energy wireless transceiver. That's amazing So you can have a smartwatch with no battery exactly it can last forever Yes, exactly as long as you wear it on your wrist, but right now it's this size right Is it possible that you can have it integrated in something like my watch like or how you're gonna put it in something like this We would use it probably not in the watch directly, but we would put it in the wristband. It's possible Yes, of course We would use a very small pieces of these thermoelectric harvester and Distributed all over the wristband and then you can get around the display. Maybe. Yeah, also It can be any shape or And you will be able to have enough power for this is very low power display This is with battery. It's seven days battery life. This one. So it's low power It's a microcontroller. It's not a and it's a RTAS microcontroller some kind of, you know, Bluetooth Solution that the problem is not the display or the microcontroller The problem is always the wireless transceiver So as long as you start sending any kind of data from your watch to your smartphone or things like that This is real that the consumer which consumes the most energy And so it depends on the use case if we can power it with thermal harvesting or not And what are you showing right here right here? We just showing that this principle is working not only on warm objects Or not but also on cold objects. So what is this cold? This is cold and this is warm and this sensor is working on the cold pipe and it is also working on the hot pipe It doesn't matter as long as you have a very small thermal gradient of at least two calvins And here you see what we are measuring and we're sending the data to the display here And all the devices are solely powered by the thermal gradient. So what is it showing here? So we're actually showing these two devices We're showing what kind of thermal gradient we're using and we're showing the orientation of the device And it's a 32 degrees and the other one's 19 actually the use thermal gradient is displayed here and the red numbers and So this emits Bluetooth. Yes, Bluetooth low energy and it turns it on as a PCB inside There's a SOC and arm. Is it an arm? Ah, yes, Cortex M0 plus some very small one. Yes, exactly. And the software The software is a standard software So the main innovation in that system is the power management and the interface between the thermoelectric generator and And the SOC Bluetooth model. Are you the most advanced in the world to make a so small She what's it called a heat Differentiator what do you call this thermal generator thermal generator? Are you the most advanced thermal generator in the world? We have the most advanced power management for these thermal generators in the world So this power management is it low chip? Yes, is it an arm? No, it's a chip It's not a microcontroller. It's just an analog chip Which is able to use very very low voltage around 20 millivolts and Upconvert these voltages to around three volts and with these three volts I can power any kind of electronics as long as the power is sufficient. How can it upconvert? Where does it get the power from? Is magic or no, it's not magic. It's a principle which uses a transformer and a special a JFet transistor, so there is a Combination is a patent of our group and so we can use this combination for this kind of application So is this one part now? Come your wrist. Is it active? I hope it's active Give me a second. So you have another app checking your wrist Takes a couple of seconds so Presently I see that temperature in the module just to have any kind of application So in the module we have 30 degree and here you see the orientation of the module which is displayed here Oh, so we you have an accelerometer. Yes Howard from your from your body from your body. Yeah, exactly So How long have you been working on this and since when have you been able to get to this size? When are you gonna get smaller? When is it gonna be in my watch? How long times it take? It depends on the on the interest of the industry and of course on the Miniaturization or perhaps a couple of months or years couple months Yeah, but why wouldn't the industry be interested in having no batteries anymore of course, they'll be interested, right? Perhaps presently it's a cost issue because the battery is very cheap and the thermoelectric harvest is a little bit more expensive How about more? Let's say if you put it on my watch three times four times if you put it on my wristband here, right? Yeah How much more do you estimate is it ten dollars more for twenty dollars more ten to thirty dollars nothing, right? Yeah, people spend a hundred fifty dollars in the watch. Yeah, I think the retail price is a hundred fifty So there should be no brainer, right? Yeah So this is coming but so people just contact for an offer and they license the patents Exactly, we can license the patents we adapt the technology we further develop the technology any kind of things and Any company in the world can license from phone offer not only German companies German companies get a discount or no same thing Cool, how many different phone offers are there? There's like many different. I in Germany. We have 60 60 different phone offers exactly so each one is specialized in a different and where you based we are based in Nuremberg and Erlangen Bavaria and you have a whole team working on this Experts in energy harvesting. Yeah, and this is also for IOT This is the main application presently is IOT Shipping Somewhere people are using this now Yeah, we were no we're working on industrial applications, but unfortunately. We are not allowed to talk about that