Battery Powered L515

Hi,

We are trying to find a way to use a RealSense L515 as part of a battery powered system, with a target battery lifetime of 5 years. This of course immediately means that we’ll need to have the sensor switched off most of the time, as the standby draw or 0.8W is still much too high (we might have ~15 Wh), but let’s assume we solve that.

The main challenge is how to integrate over USB. We can’t use the SDK as-is, because running a full blown OS from the list of supported ones is out of the question. So we’d need to port the parts that we need. Ok, sounds doable.

But then there are a few other potential showstoppers:

The data sheet states a requirement of USB 3.0, which many of our target devices don’t support
The SDK is mostly concerned with streaming video, whereas we’d just be looking to capture a single image. I haven’t found any other documentation for the USB interface the sensor exposes that we could use. I doubt that our little micro could keep up with the sensor’s volume of data for very long…
If we were to power off the sensor each time, we’d need to be sure that it can power back up very quickly

The question: Is anybody using the sensor in such a battery-powered setting? Do you perhaps even have an application note for it?

Or can you already see from any of my points that it won’t be possible to integrate the sensor into a system with a long battery life?

Zulkifli Halim

August 20, 2021 15:29

Hello Johannes,

Thank you for contacting us.

USB 3 is required when using L515, otherwise, it won't work.

There are no users who have tried using the sensors on a battery-powered setting as you mentioned and Intel doesn't provide an application note for that.

Sincerely,

Intel Customer Support

Johannes Lehmann

August 23, 2021 14:07

Thanks Zulkifli, I appreciate the to-the-point answer!

Battery Powered L515

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