WEBVTT

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oh oh that's awesome

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so you guys we are here at the hofu institute at uestc

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to check out not just the life-size yao

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ming free throw robot but also

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the one and only badminton playing robot

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i'm gonna uh see if my skills are up to snuff here in just a moment we're gonna

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get briefed on exactly how this thing was built over the last several years

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and see if man is obsolete just yet

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or if we've still got some time left

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thanks to videoblocks for sponsoring this episode they're a great

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so we haven't been briefed yet on how exactly it works but it seems to have

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something to do with these stereo cameras in these base stations at the end of the

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court cool so this robot is not being used right

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now because there's a lineup of people that want to use it but i think i should

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be up now everyone's kind of leaving okay

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you like this yeah should be good okay we can pray

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oh sure all right i guess i'm getting a warm-up

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match

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okay so we're getting a private demo now and we're starting with them showing us

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the two robots playing against each other completely robotic badminton game

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okay so here's how the base station works i was right these two cameras here

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are for stereo computer vision and i was actually wrong about some

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other aspects of it so for example i had thought that these right here might be

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ultrasonic sensors that aided these cameras in some way but no that's not

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the case at all so they're using two baumer cameras they're 2048 by 2048

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resolution and they run at 180 frames per second

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so according to the guys here they manage as little as 10

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milliseconds of delay between the shuttle starting to move

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towards one of the robots and it predicting

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approximately where it's going to land on the court so here's how the game

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starts right now it's very much in prototype

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stages but the plan is actually to turn these into a commercial product and you

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can actually buy one today if you want

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at the value price of just about 65 000

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us dollars for the whole system so that's the robot itself which runs for

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about 30 to 60 minutes on battery the base station with the cameras that's

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powered by it's either a core i5 or a core i7 computer they weren't 100 sure

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and uh i don't know maybe they throw in a racket for you at the same time that one

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i'm not 100 on

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so at this point the robots aren't really aiming at

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anything specific they're just trying to schwack the bird

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kind of that away and then it's up to the other robot to get in the right spot

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so they haven't actually measured the top speed that the robot can travel on

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the court but from just watching them you can see

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especially in a case where one of them mishits

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they can actually get to where they need to go really fast

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so they've got treads on the bottom that allow the entire robot to move on the

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court and then the racket itself and the

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servo that's mounted to it can also travel in both x and y axes like uh a

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cnc as you can see ever since that first

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glitch they've actually been rallying with each other continuously

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and it's finally over you can see it really went for it there though okay

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okay it's my turn to play

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oh nice

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so you can see the robot returns to center every time

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that puts it in the best position to make the next shot although i

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shouldn't say that the robot does it so much as the control tower does it

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so the robot itself actually doesn't have any sensors at all

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and it relies on the cameras to get around on the court

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so they need to use like a tracker pad at the beginning of

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the setup process in order to help measure the court as a calibration

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process now in the future the plan is to continue to develop it

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maybe give it the ability to block a smash

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or give it the ability to watch the player and use ai to predictively decide

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what shot it expects him to play

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and then get ready for it proactively

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look at it go all right let's make it really move

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nice see that

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i hit the ceiling but the robot still moved to a location and made a swing

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that's because what it does is it actually predicts based on the first 10

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milliseconds of the shuttle's movement where it's going to go and then does its

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best to update with more granularity as

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the shuttle continues to fly but it will still take that initial data

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move to where it thinks it's going to go and then use a countdown timer

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calculation to make a swing when it thinks it's going to arrive so watch i'm

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going to try and do that again as long as i'm not smashing too hard it

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can actually play back some of my downward shots

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but it'll have to wait until the racket's angle can be adjusted before it

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can do so with more consistency now the original model that they used

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to win the robotics contest back in i think it was 2015 or 2016 when

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the initial design was made had two rackets one that hit this way and one

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that hit vertically but what they found as they continued to refine the design

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was that it really just didn't make that much of a difference at this level

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so according to the students here

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the condition of the shuttle shouldn't make that much of a difference

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because of the way that they're calculating its likely trajectory

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but i did notice the one that i was using just now it missed twice within a

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span of about 30 seconds so

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oh not bad oh

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wow it actually won a point on me there your turn

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okay hold on i gotta ah gotta do this up

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shut up i showered this morning no i showed up that doesn't change that the

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easy rig is sweaty you know how to use it oh man that sucks

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what the heck

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i can't figure out how to get you in focus

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did you hit it out again robot's gonna kick your ass dennis

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dude what this is like nerd sports all

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over again so

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we're not at the point yet where all humans

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can be bested by robots

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but at least some of them can

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and so i for one am gonna prepare myself

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to welcome our robot overlords and now a word from our sponsor

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jason from drive badminton today but we have LTT shirts down there and also link

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down there is our community forum which you should totally join now i'm gonna

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get back to my game