Autonomous Warehouse Drone Inspection | Marvelmind

0:00 Our colleagues, today we'll be talking about drones for inspection. So we are discussing their NIA architecture and drones—mainly one to two, one to four drones. Why? Now, let's start first with the difference between IA and NIA. The biggest difference between IA and NIA is that in NIA architecture, at any moment, only one mobile beacon is emitting ultrasound and station beacons are receiving ultrasound. So it means that if you have four drones, it means that in one cycle one drone will emit, then the next cycle another one will emit, the third, fourth, and so forth. So it means that if you have many drones, the update rate further on may be really low. It depends on the requirements, but it may be low. For example, if you have 16 Hertz.

0:58 per system, which is kind of regular update rate for each one at a relatively shorter distance. So me that if you have 10 drones, you'll have 16 divided by 10 update rate per drone, so a bit more than one update—location update per drone per second—which may be low. We usually recommend NIA architecture for one to four drones. IA architecture, on the other hand, is not really suitable for drones, at least for now, because drones are noisy—not only noisy in audible noise but also in ultrasound—so wideband noise which is coming to the ultrasound as well. So it means that if you install a receiving beacon on the drone, most probably the range will be very limited because it will be saturated by the noise of the propellers. So we are discussing NIA architecture and one.

1:57 to four drones, mainly because of the update rate. If update rate is not a problem, you can fly 100 drones, but usually update rate is the requirement. So in order to have reasonable update rate of a few Hertz or more, one to four drones is the limitation. So we're not talking about some particular case—this always covers all the cases possible. We are focusing on warehousing and bridges for inspection. So imagine this is a warehouse. Now, typical shelves are high, ten to twelve meters. Between the shelves, the width is three meters. And we want the drone to fly for their inspection—okay, not this kind of drone, but a much larger drone is flying through the air and checking QR codes or checking their pallet places and so forth. So a drone in order to fly in 3D.

2:57 must have at least three station beacons within 30 meters. As usually, they recommend three plus one redundancy. So the recommended placement of the beacons is the following: you place them on the top of the aisle, all of the shelf, facing down to the drone. So the drone will be flying from zero height to the maximum height and flying through the aisle from low to high in a pattern which you lined about the distances. As you know, the maximum distance that can be between the station beacon and mobile beacon is 30 meters, but take into account that you already have 10 to 12 meters height of the aisle and the minimum height of the drone is zero. So it means that it cannot place.

3:55 the station beacons 30 meters apart. You need 15 to 20 meters, realistically, in order to have under 30 meters the maximum distance. This is one element to remember. Another element, very important to remember, is this: so this is the aisle on the aisle. So this is three meters between the station beacons—here and there over there. That is your drone when it's flying near to the floor. As you see, the triangle for trilateration is extremely narrow. That means that since we are measuring the distance between the station beacons, we can very precisely now imagine this under one centimeter precision. But location is intersection of this and this. Submit that you will have very.

4:51 precise height but pretty imprecise this direction. Okay, let's call it Y direction. Why? Because the distance here, here, and here would be almost the same, so the difference will be comparable to this. So the spot that we will be able to give to you is this, and it is not an issue of our technology. It's an issue of any trilateration systems. So it means that, roughly, just very, very roughly—it's not real science or nothing like this—but roughly you can think about this: if you have precision of one centimeter and ratio of distance to this base is like 30 to 3, so instead of 1 centimeter, you can expect up to 10 centimeter position. It's very rough—it's not real mathematical equation—but that kind of.

5:47 range in this direction. But in this direction it will be still 1 centimeter. So this is exactly the explanation why some people are asking why you cannot fly next to next to this. So you cannot fly and have very high precision when you are flying next to their plane of station beacons. The same story, for example: you have a drone here. The same theory we have here, but opposite. So you'll have very precise this location but very precise this location because you have very narrow angle here. So we have a separate video shot and published on YouTube much earlier. But remember: in order to have reasonable tracking in all XY directions, you need to fly in about and about the same distances as the base. So if you have a base of five meters, and then.

6:47 let's say five meters is your sweet spot. If you have it narrower, it will be too bad. If you have just, whatever, half a meter, it will be also very bad. So don't try to fly it. But in general, overall recommendations for the warehouse: put them on high, on the top, face down. Enable only those sensors that you need, as usually. So, for example, if you are facing like this, you need this, this, and this. You don't need this, and you don't need this. So don't enable all of them. It's easy with Super-Beacons because Super-Beacons have wider receiving diagram, but it's more challenging for Beacon HW v4.9 on the mobile beacon. Of course, because the drone is flying everywhere, you must enable all of them. Since the distances are high, so you need to enable or switch from five periods by default to thirty periods in order to be able to reach thirty meters distance. That's it. So if you have additional questions, please ask us and send to info@marvelmind.com, and we will be happy to tell you more and explain. Thank you.