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Predict 3D position of flying bugs and pest to shoot down them with a laser

naro.go.jp

91–100 of 124 posts

Re: Predict 3D position of flying bugs and pest to shoot down them with a laser

#91
post #17

Ah yes, the "star wars laser defense mosquito system". It' as impractical then (early 00's origin) as it is now https://www.youtube.com/watch?v=TGkPMZxWPpA&t=2s (it's Dutch but you get it). Unless you can get mm accuracy and perfect non-foe detection it's useless with the multi-watt lasers generally required.

But is it practical yet for the much larger moths the article is discussing?

Re: Predict 3D position of flying bugs and pest to shoot down them with a laser

#92

Earlier quoted context omitted.

In a flat area, you could imagine designing a system so that it couldn't aim below horizon, and then mount it 10-15 feet up to mitigate the risk of blinding.

That sounds like a big risk to aircraft.

I think an aircraft flying 15 feet above ground is a big risk to your crops too.

Re: Predict 3D position of flying bugs and pest to shoot down them with a laser

#93
post #46

Earlier quoted context omitted.

You might be able to create a vortex cannon with enough shear force to rip their wings off.

https://www.youtube.com/watch?v=6BhV-o77RqQ

Dan! Always wanted a tour of his place, I can’t even count the number of times I thought about grabbing an old projection TV to upcycle the fresnel into a solar death ray.

Re: Predict 3D position of flying bugs and pest to shoot down them with a laser

#94
post #74

Earlier quoted context omitted.

I've been dreaming about that to kill mosquitoes since I was a teenager. Then I wondered: "how to prevent firing the laser into someone's eye?" and my idea was to only shoot laser from 2 meters high and to only ever shoot towards the ceiling, never downwards, while having the ceiling having some kind of paint/material that wouldn't be reflecting the laser too much. Make the paint/material all white to makes mosquito…

Wipe them out, all of them. The ecosystem will survive mosquitoes' extinction. On the subject of laser safety, can you make one weak enough that a human will naturally blink or look away without getting blinded but powerful enough that it'll overheat the mosquito its trained on for a few seconds? If the Joules are spread out linearly over a few second, I expect it'd exponentially decrease the risk of chance reflectio…

No post body was provided.

Re: Predict 3D position of flying bugs and pest to shoot down them with a laser

#95
post #73

Earlier quoted context omitted.

There are a number of DIY instructions for building a phased array ultrasonic manipulator, eg [1]. You might be able to 'tweeze' the offender into a capture apparatus or high voltage deanimator. https://hackaday.com/2021/08/18/phased-array-levitation-is-s...

Why not the same idea with lasers, if you have an array of low power lasers but they all focus on one 3D location, if you are not at the focus location you will not be exposed to a dangerous laser power. An array of hundred to a thousand low end laser diodes using a an array of mems mirrors to aim the beams will ensure the focus point will fry the bug.

Or just use some optics to create a focal point of one 5W laser thats +/- 1-2ft.

Or 200W xD

https://youtu.be/WAI7Lu4UFi4

Re: Predict 3D position of flying bugs and pest to shoot down them with a laser

#96

This sounds very similar to that old idea for protecting African families from female Aedes Aegypti mosquitoes[0]. I think the idea never took off, and I’m still not sure why. [0]: https://youtu.be/hqKafI7Amd8

It never took off because a) Mosquitos are small and hard targets and b) because philanthropists realized they could buy mosquito nets for billions with the funding required to develop it. If it gets developed for mosquitoes, it will be a solution for rich people for decades.

Re: Predict 3D position of flying bugs and pest to shoot down them with a laser

#97
post #74

Earlier quoted context omitted.

I've been dreaming about that to kill mosquitoes since I was a teenager. Then I wondered: "how to prevent firing the laser into someone's eye?" and my idea was to only shoot laser from 2 meters high and to only ever shoot towards the ceiling, never downwards, while having the ceiling having some kind of paint/material that wouldn't be reflecting the laser too much. Make the paint/material all white to makes mosquito…

Wipe them out, all of them. The ecosystem will survive mosquitoes' extinction. On the subject of laser safety, can you make one weak enough that a human will naturally blink or look away without getting blinded but powerful enough that it'll overheat the mosquito its trained on for a few seconds? If the Joules are spread out linearly over a few second, I expect it'd exponentially decrease the risk of chance reflectio…

> Wipe them out, all of them. The ecosystem will survive mosquitoes' extinction.

Reminds me of the Chinese's brutally misguided attempts to stave off the famines during the Cultural Revolution. One of their worst ideas was to eradicate sparrows, thinking that sparrows were eating crops. No, sparrows were eating insects that were eating crops. So with sparrows gone, the insect population exploded, resulting in even worse destruction.

Just a reminder that when it comes to ecosystems, we really don't know what the fuck we are doing. There are hundreds of similar stories, e.g. destruction of wolves, bison, pigeons, and other organisms we consider "pests". It's a wonder that the worldwide ecosystem doesn't consider us the pests.

Re: Predict 3D position of flying bugs and pest to shoot down them with a laser

#98
post #82
post #77

Earlier quoted context omitted.

That’s not how reflections work. Also there’s no bug as big as a coin that such a system could/should kill, so it’s pretty easy to not misdetect that. Again, corners have a higher probability of ending up in your eye than even just someone flipping a coin in 2022.

The comment said your system has a bug as in it malfunctions and decides to shoot the coin anyways, and his other point was you will be looking at the coin wide eyed so perfect chance for a reflected laser to hit you in the eye if by chance the correct angle happens to line up and send it back to your eye. Also, I've seen too much unbelievable stuff actually happen so nothing is unbelievable in 2022. Yes we are talki…

Right, because nothing else we already use has any chance of causing permanent damage. Nothing at all.

Leave your bubble, I’m talking about relative probability, I’m not saying that it’s “impossible.” We accept far greater risks in our daily life than this.

Re: Predict 3D position of flying bugs and pest to shoot down them with a laser

#99
post #6

It says the prediction is accurate to 1.4cm, but it doesn’t say at what range. 1.4cm at 1km is great, but 1.4cm at 1m likely isn’t usable. I’m also curious what the failsafes are like for this - how will they prevent laser spillover or misfires from hitting eyes? Even if this is a 1 in a million chance, it likely isn’t worth it except in highly remote areas.

The original article was published a month or so earlier, and sounded a bit like the angular resolution for whatever machine was already determined, and they worked their way back to suitable bugs and the use case, rather than having a specific issue in mind and designing the setup around.

Re: Predict 3D position of flying bugs and pest to shoot down them with a laser

#100
post #98
post #82

Earlier quoted context omitted.

The comment said your system has a bug as in it malfunctions and decides to shoot the coin anyways, and his other point was you will be looking at the coin wide eyed so perfect chance for a reflected laser to hit you in the eye if by chance the correct angle happens to line up and send it back to your eye. Also, I've seen too much unbelievable stuff actually happen so nothing is unbelievable in 2022. Yes we are talki…

Right, because nothing else we already use has any chance of causing permanent damage. Nothing at all. Leave your bubble, I’m talking about relative probability, I’m not saying that it’s “impossible.” We accept far greater risks in our daily life than this.

I know it is new years but you sound like an angry drunk. I know there are lots of risks in life I have taken many of them. I used to work at a Bungy jump and jumped hundreds of times. I ride a motorcycle at high speeds. I was simply commenting to the fact that your original comment did not respond correctly to the ops comment. He said a bug in the system as in a computer error bug and you went off and said there is not bug that big that would be mistaken, he wasn't talking about an insect but a computer error. Then you said that is not how reflections work, and again not true it could reflect into your eye not simply because he was looking at it but it would also take a certain angle but op was making a general statement about possible dangers. You are very defensive about this just chill out and accept that we are just discussing some of the possible dangers of such a system. We are, after all, talking about lasers and it would be totally irresponsible if such a system was built and all the modes of failure not explored. Not likely to happen does not mean you do not discuss it. Have a happy new years.
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