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'[OT]: Detecting a flying mosquito'
2001\06\14@063957 by Diego Sierra

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Hi!

Is there something that can be build to detect the direction where a flying mosquito is?

I suppose its sound is extremely distinguished (is this the word?)

Regards,
Diego.

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2001\06\14@071253 by Diego Sierra

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14/06/01 11:38:17, Diego Sierra <.....dsgKILLspamspam@spam@ll.iac.es> wrote:

>Hi!
>
>Is there something that can be build to detect the direction where a flying mosquito is?

I was thinking in something able to drive a laser beam to fry it ;-)

Cheers,
Diego.

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2001\06\14@074002 by spam

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This is a noble cause !

I am sure the "pop" when the mosquito evaporates will be sufficient
to triangulate the beast.
Apart from that, the noise a mosquito makes is periodic. It is
therefore very hard to calculate the direction from 3-4 microphones.
Maybe using doppler effect -

But if you can fry - or just startle the beast so it makes a distinctive
sound (is that the word then?), it would be just a matter of sound
speed, a set of equations and a good laser.

During the experiments - don't eat papaya while your circuit is on
or soak your moustache in fire retarding fluids.

Kent



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2001\06\14@094117 by Lawrence Lile

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There is a commercial device with a similar purpose.  It uses a small gas
flame to produce a little carbon dioxide and warmth.  The flame is inside a
tortuous trap, with either a bug zapper or a sticky substance (can't
rememmber) to kill the little buggers.   Mosquitoes are attracted by carbon
dioxide (from breath) and then zone in to a warm object (a body) to do their
nefarious business.  The devices are supposed to clear mosquitoes
effectively from several acres.

Commercial bug zappers are useless - they mostly kill moths and other
non-target species.  Mosquitoes only blunder into them by chance, they are
not attracted by the lights.  Why do so many hicks buy them?

Seems like a much simpler method than triangulation and directing a laser.
Don't try to sell one, it's patented.
No PICs in it either.

-- Lawrence Lile

{Original Message removed}

2001\06\14@121623 by Dan Michaels

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Diego wrote:
>Hi!
>
>Is there something that can be build to detect the direction
where a flying mosquito is?
>
>I suppose its sound is extremely distinguished (is this the
word?)
>

Maybe "distinctive" is the word you are looking for.

BTW, I just read yesterday that mosquitos are attracted to the
color "blue". Maybe time to paint the house orange. Also, I
believe they home in on their victims partially by detecting
CO2 emissions, for whatever help that might offer.

Hmmmm, maybe you could make a box with a big blue flashing
light that emits CO2 vapors [possibly from a cat chained or
other CO2 emitter], and lure the mosquitos into an electrocution
grid, or detect their buzz and zap'em with a flame thrower as
they fly in the door.

good luck,
- dan michaels
http://www.oricomtech.com
============================

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2001\06\14@124752 by Wendy J Olend

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BTW, I just read yesterday that mosquitos are attracted to the
color "blue". Maybe time to paint the house orange. Also, I
believe they home in on their victims partially by detecting
CO2 emissions, for whatever help that might offer


I've seen traps, that use CO2 as bait to catch mosquitoes.  A tank emits a
small stream of CO2 which the mosquito homes in on.  She then flies into
the trap, expecting a free lunch, and cannot get out again.  I forget what
actually does the critters in, maybe dehydration/starvation.

They are supposedly used by the US Military to clear out the skeeters in
swampy areas.

I wanted to get one for my Mom, but they were well over $1000.  Maybe once
I graduate and get a real job...

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2001\06\14@125845 by Kevin Olalde

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> Hmmmm, maybe you could make a box with a big blue flashing
> light that emits CO2 vapors [possibly from a cat chained or
> other CO2 emitter]

Finally a use for cats!

Kevin

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2001\06\14@131042 by Dan Michaels

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At 12:57 PM 6/14/01 -0400, you wrote:
>> Hmmmm, maybe you could make a box with a big blue flashing
>> light that emits CO2 vapors [possibly from a cat chained or
>> other CO2 emitter]
>
>Finally a use for cats!
>
>Kevin
>

When "brainstorming" you have to consider every possibility,
even if you don't eventually go there. And besides, the
idea of a chained cat might serve as a good "prototype"
for something ultimately more practical.

[and unfortunately my neighbors moved away and took their
cat - they saw me trying to lure it into the box with milk
and catnip].

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2001\06\14@135032 by Scott Stephens

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Bats use ultrasound. Beam around 100Khz and listen for the doppler modulated
return their fluttering little wings create.

I thought a kewl yuppy toy would be a little phased array panel that fires
compressed vortex rings to blow the wings off da 'lil suckers. Or perhaps
just a brief squirt of water would do. I have a feeling that between a
couple watts of ultrasound and the firecracker-like pop of the vortex
cannon, it would be too obnoxious to keep around.

Scott

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2001\06\14@165612 by Brent Brown

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>> Hmmmm, maybe you could make a box with a big blue flashing
>> light that emits CO2 vapors [possibly from a cat chained or
>> other CO2 emitter]
>
>Finally a use for cats!

Dye the cat blue.

Brent Brown
Electronic Design Solutions
16 English Street
Hamilton, New Zealand
Ph/fax: +64 7 849 0069
Mobile/text: 025 334 069
eMail:  TakeThisOuTbrent.brownEraseMEspamspam_OUTclear.net.nz

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2001\06\14@170319 by Spehro Pefhany

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At 08:56 AM 6/15/01 +1200, you wrote:
>>> Hmmmm, maybe you could make a box with a big blue flashing
>>> light that emits CO2 vapors [possibly from a cat chained or
>>> other CO2 emitter]
>>
>>Finally a use for cats!
>
>Dye the cat blue.

A small blue strobe lamp inserted into the cat. With feeding tubes
in the other end.

Actually, if you're considering wetware, a (suitably interfaced)
frog brain would do the trick.

Best regards,


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2001\06\14@181615 by Kyrre Aalerud

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Haha, mosquitos chasing the cars!
(co2)

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To: <RemoveMEPICLISTspam_OUTspamKILLspamMITVMA.MIT.EDU>
Sent: Thursday, June 14, 2001 6:16 PM
Subject: Re: [PICLIST] [OT]: Detecting a flying mosquito


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2001\06\14@203322 by goflo

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Spehro Pefhany wrote:

> Actually, if you're considering wetware, a (suitably interfaced)
> frog brain would do the trick.

How about the whole frog - Don't they eat mosquitos?
Small covered terrarium, bleed a little CO2 through
a hole in the cover... Saw a spectral plot of mosquito
eye somewhere once - Very sharp response at blood temp.
Seems like a suitable spoof could be arranged.

Jack

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2001\06\15@021012 by Dan Michaels

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Forwarded over for AliceC - SCS Engineers is having some
server problems
========================


http://www.epar-mosquito.com/product_development.htm

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2001\06\15@021503 by Dan Michaels

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Forwarded over for AliceC - SCS Engineers is having some
server problems
========================


At 02:01 PM 6/14/01 -0700, you wrote:
>When "brainstorming" you have to consider every possibility,
>even if you don't eventually go there. And besides, the
>idea of a chained cat might serve as a good "prototype"
>for something ultimately more practical.
>
>[and unfortunately my neighbors moved away and took their
>cat - they saw me trying to lure it into the box with milk
>and catnip].
>

Ive actually looked into this for camping trips.  The CO2 source could be
a candle for all anyone cares.  A little 5V pc fan, set in a section of
PVC pipe near the candle flame, sucking gently.  She sees the IR
signature, smells the CO2, wanders over, and is gently wafted into the
pipe, trashed by the fan blades, and deposited in the foot end of an old
pantyhose.  When the foot-sack is full, toss it in trash and use other
leg.  Use a pic, turn on after peak daylight, turn off at about nine.
peltier to run the fan, using candle for heat?

gotta look into steam-fired pics...

a

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2001\06\15@074937 by Russell McMahon

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{Quote hidden}

Too inefficient. Use a Stirling Engine driven from the candle.



           Russell

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2001\06\15@093155 by Diego Sierra

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Hi!

>http://www.epar-mosquito.com/product_development.htm

Too big for my room, and too expensive !

I just need something to tell me where it is, leaving the pleasure (to kill it) to me }:->

Cheers,
Diego.

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2001\06\15@105613 by Dan Michaels

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Diego wrote:
>Hi!
>
>>http://www.epar-mosquito.com/product_development.htm
>
>Too big for my room, and too expensive !
>
>I just need something to tell me where it is, leaving
the pleasure (to kill it) to me }:->
>

Set up 2 high-gain amplifiers fed by 2 directional mikes
located on the ends of a 6" boom [piece of plastic]. Use
a servo motor or 2 to pan the boom around and zero in on the
mosquito's hi-freq buzz - you are pointing at the mosquito
when the signals in the 2 amps are the same. Use the PIC to
determine this, and also to control the servos. When the boom
stops moving, the mosquito is resting, and go in quick with
your swatter.

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2001\06\15@115743 by spam

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Dan, that is the Danish Design Price for you right there.
Maybe Bang & Olufsen would be interested.
With a Georg Jensen fly swatter bundled, it would be in every
home.
Can we internet-enable it ?
Kent


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2001\06\15@120159 by spam

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> Too inefficient. Use a Stirling Engine driven from the candle.

Conrad in Germany has nice sterling engines..
Order no . 672017-92
http://www.conrad-electronic.com/cgi-
bin/conshop/ConShop.pl?TK_EV[SHOWPAGE]=&TK_PAR[PAGEID]=
19490

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2001\06\15@134544 by Roman Black

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Dan Michaels wrote:

> Set up 2 high-gain amplifiers fed by 2 directional mikes
> located on the ends of a 6" boom [piece of plastic]. Use
> a servo motor or 2 to pan the boom around and zero in on the
> mosquito's hi-freq buzz - you are pointing at the mosquito
> when the signals in the 2 amps are the same. Use the PIC to
> determine this, and also to control the servos. When the boom
> stops moving, the mosquito is resting, and go in quick with
> your swatter.


Ha ha! You guys are cracking me up! :o)
In Australia the hobby electronics shops
have sold cheap mosquito repeller kits for
many years. The female is the only one that
sucks blood (for her developing eggs) and
the male's ultrasonic call can be duplicated
easily and drives the females away. They work
pretty good too.
:o)
-Roman

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2001\06\15@140030 by Martin Baker

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Hmmmmm... The thought occurs that by using either the suggested acoustic
triangulation method or a pair of microwave motion detectors, you could
track the little beggars and then use a laser pointer to target them for
swatting...or substitute a 500mw laser diode and toast the little
bloodsuckers....

Explaining the little scorch marks on the wall is a matter for a different
forum........

Martin

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2001\06\15@140439 by Dan Michaels

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Roman wrote:
>
>Ha ha! You guys are cracking me up! :o)
>In Australia the hobby electronics shops
>have sold cheap mosquito repeller kits for
>many years. The female is the only one that
>sucks blood (for her developing eggs) and
>the male's ultrasonic call can be duplicated
>easily and drives the females away. They work
>pretty good too.


For some reason, Diego wishes to dispatch each and
every mosquito on an individual basis himself.
Proverbial power over life and death, I suppose.

And funny that the females should run away at
hearing a male. Why then are there so many of
these unwelcome suckers around?

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2001\06\15@141128 by Dan Michaels

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Kent Johansen wrote:
>Dan, that is the Danish Design Price for you right there.
>Maybe Bang & Olufsen would be interested.
>With a Georg Jensen fly swatter bundled, it would be in every
>home.
>Can we internet-enable it ?
>Kent
>

I guess that would be the Bang & Olufsen Mosquito Banger then.
We might be able to get the company that makes the Big Bertha
golf club to build the swatter. US outlets could be Abercrombie
& Fitch and the Sharper Image. Mounting a CCD on the boom, fed
to a PIC-based internet engine, would be the best way for the
matrix denizens to vicariously keep track of the hunt. Maybe
we could franchise it to ESPN for the 3AM - 4AM slot.


{Quote hidden}

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2001\06\15@141734 by Roman Black

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Dan Michaels wrote:
{Quote hidden}

That data was in the text for the mosquito
repeller kit I built for Dad years ago, apparently
after mating they go into "egg" mode and stay clear
of the males. I suppose before that it was "disco
season".:o)
-Roman

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2001\06\15@153019 by Dale Botkin

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On Sat, 16 Jun 2001, Roman Black wrote:

> Dan Michaels wrote:
> > And funny that the females should run away at
> > hearing a male. Why then are there so many of
> > these unwelcome suckers around?
>
>
> That data was in the text for the mosquito
> repeller kit I built for Dad years ago, apparently
> after mating they go into "egg" mode and stay clear
> of the males. I suppose before that it was "disco
> season".:o)
> -Roman

Hmm, would that be when they start looking for a cloud of cigarette smoke
to fly through?

Dale
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On my desk I have a workstation...

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2001\06\16@024435 by Peter L. Peres

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Really, how hard can it be to make a homing array using microphones and
rigid phasing (i.e. array has fixed phasing and moves by servo f.ex.)
using a PIC to steer and fire. It would have to pick up about 400Hz,
gymbal on two axes using model servos and fire if the level is high
enough. Add blue LED, 37.5 degree blackbody radiator and CO2 source (cat)
at will.

I don't think that a mosquito notices a 10mW laser beam even if it is kept
on it for a while. The critter is simply too small to absorb any kind of
significant energy from the beam (unlike people's eyes, which would).

Has anyone got experience with speaker coil squirt guns ? I have toyed
with solenoid types, these are not quiet but they pack a lot of punch
(they use a good sized solenoid core combined with water hammer principles
to reach astronomical ejection pressures).

I have imagined a speaker squirt gun. It's one of those waterproof
intercom speakers, with a cardboard diaphragm with a hole fitted over the
open side. It would be fired by a capacitor discharge circuit from low
voltage (max 12V). The space between the diaphragm and the membrane would
contain the liquid with or without some sponge retainer and some air over
it. The shape of the hole is the key. The device would work only upwards
and up to an angle from vertical. It could be refilled continuously using
a syphon and 2 tubes from a reservoir. Now I hold the patent ;-).

Peter

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2001\06\16@070735 by Diego Sierra

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>For some reason, Diego wishes to dispatch each and
>every mosquito on an individual basis himself.
>Proverbial power over life and death, I suppose.

Hahaha :-)

Well, just keeping them out would be nice ... at least there will be no scorch marks on the walls :-)

How to build one of those ultrasonic kits?

Cheers,
Diego.

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2001\06\17@005743 by Russell McMahon

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> Set up 2 high-gain amplifiers fed by 2 directional mikes
> located on the ends of a 6" boom [piece of plastic]. Use
> a servo motor or 2 to pan the boom around and zero in on the
> mosquito's hi-freq buzz - you are pointing at the mosquito
> when the signals in the 2 amps are the same. Use the PIC to
> determine this, and also to control the servos. When the boom
> stops moving, the mosquito is resting, and go in quick with
> your swatter.


Typical engineer - brilliant solution which overlooks the obvious :-)

When Mosquitos stop moving, where are they usually resting?
You'll avoid Mosquito bites but don't expect much sleep!!!
Whack, whack -- Yeow !!
:-)




       Russell McMahon

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2001\06\17@012952 by Dan Michaels

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RM wrote:

>
>Typical engineer - brilliant solution which overlooks the obvious :-)
>
>When Mosquitos stop moving, where are they usually resting?
>You'll avoid Mosquito bites but don't expect much sleep!!!
>Whack, whack -- Yeow !!
> :-)
>

Ha, in america they usually end up hanging upside down from
the ceiling. I guess when downunder, they end up hanging
rightside up on your chin.

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2001\06\17@145031 by Thomas McGahee

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Instead of trying to dynamically track the pesky mosquitoes, save some
bucks and instead opt for a method that only determines when they have
invaded
a particular section of your air-space. This would only require two
sound sensors mounted on opposite walls and facing one another.

When both sensors detect the same sound level of pesky mosquito noise
this would be detected by a PIC or an IBM 370 mainframe computer which
would then trigger the release of high speed micro-particles (sort of
like miniature shotguns) that would saturate the detection area
and shred to death any hapless mosquito that may have invaded the
detection zone.

If such wanton violence turns you off, then instead fire high energy
x-ray bursts. This will not immediately kill the pesky mosquitoes,
but it will make all their hair fall out, and render them sterile.

You could also trigger explosives that would send concussion waves
screaming towards the poor mosquitoes that would then obliterate
them entirely. The resident human(s) would, of course, have to
wear appropriate ear protection at all times. Probably more
comfortable than wearing the lead-lined clothing required if using
the high energy x-ray technique.

The American Society for the Prevention of Cruelty to Mosquitoes will most
likely not approve of ANY of the above measures. So just capture as many
live mosquitoes as you can and release them into the homes of the
members of the ASPCM and let THEM figure out what to do with them.

Fr. Tom McGahee

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2001\06\17@153057 by Alexandre Domingos F. Souza
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>When both sensors detect the same sound level of pesky mosquito noise
>this would be detected by a PIC or an IBM 370 mainframe computer which
>would then trigger the release of high speed micro-particles (sort of
>like miniature shotguns) that would saturate the detection area
>and shred to death any hapless mosquito that may have invaded the
>detection zone.

       Maybe you are playing quake too much?

>The American Society for the Prevention of Cruelty to Mosquitoes will most
>likely not approve of ANY of the above measures. So just capture as many
>live mosquitoes as you can and release them into the homes of the
>members of the ASPCM and let THEM figure out what to do with them.

       Obaaaaaaaaaaaaaaaaa, nice method! I'm working on it! :oD


---8<---Corte aqui---8<----

Alexandre Souza
EraseMEtaitospam@spam@terra.com.br
http://planeta.terra.com.br/lazer/pinball/

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2001\06\17@215907 by DFansler

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I will probably regret telling this secret, but having been relocated/new
identity several times due to the work I do, what the heck!

I once built a mosquito (actual size of course)  with AI capabilities.  The
processor was actually 150 PIC 12C509's that MicroChip put on one wafer
using a rather exotic machine with .00001 nm trace width's.  By using these
as a parallel processor, I was able to get enough intelligence that the
mosquito would fly, obtain and track objects.  I was up to the "lawyer
function" (blood sucking) part of the development when we ran into a
problem - the AI (based on the 3 laws of robotics) would refuse to perform
the function - this ending up scrapping the whole project.  Oh well such is
life.

David V. Fansler
@spam@DFanslerspam_OUTspam.....MindSpring.com
Now Showing http://www.dv-fansler.com

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2001\06\17@233220 by Dan Michaels

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David Fansler wrote:
........
I was able to get enough intelligence that the
>mosquito would fly, obtain and track objects.  I was up to the "lawyer
>function" (blood sucking) part of the development when we ran into a
>problem - the AI (based on the 3 laws of robotics) would refuse to perform
>the function - this ending up scrapping the whole project.  Oh well such is
>life.
>

Oh no, this is truly terrible. However, there is a very easy remedy
to Asimov's 3 laws. If you read the following book, you will discover
that implementation of the 3 laws is "automatic" if you simply follow
the guidelines of Rodney Brooks' subsumption architecture.

"Mobile Robots: Inspiration to Implementation" by Jones & Flynn

If will also be clear that the solution to your problem is to
simply add a priority reversing routine inline in the arbitrate()
function. Once accomplished, no lawyer in town will be safe
thereafter.

Another possibility is simply to take each operation in the
arbitrate() function, and multiply by a -1. BTW, this is a
digital -1, and not an analog approximation -0.9999999999r.

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2001\06\18@032407 by Russell McMahon

picon face
> RM wrote:
>
> >
> >Typical engineer - brilliant solution which overlooks the obvious :-)
> >
> >When Mosquitos stop moving, where are they usually resting?
> >You'll avoid Mosquito bites but don't expect much sleep!!!
> >Whack, whack -- Yeow !!
> > :-)
> >
>
> Ha, in america they usually end up hanging upside down from
> the ceiling. I guess when downunder, they end up hanging
> rightside up on your chin.


In the US of A Mosquito's suck blood from the ceilings???



       RM

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2001\06\18@032410 by Russell McMahon

picon face
> When both sensors detect the same sound level of pesky mosquito noise
> this would be detected by a PIC or an IBM 370 mainframe computer which
> would then trigger the release of high speed micro-particles (sort of
> like miniature shotguns)


When using an IBM 370 you would have to use Main-Frame particles. This could
have unpleasant repercussions (I believe they call this "collateral
damage").



       RM

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2001\06\22@195000 by Dan Michaels

flavicon
face
Diego wrote:
>Hi!
>
>>http://www.epar-mosquito.com/product_development.htm
>
>Too big for my room, and too expensive !
>
>I just need something to tell me where it is, leaving
the pleasure (to kill it) to me }:->
>

Diego, I just discoverd that the US Navy has a mosquito
hunter-killer robot that they use when on maneuvers down
in the tropics - claimed to be 100% effective:

(check out the jpeg first)
http://www.nosc.mil/robots/images/robart3c.jpg

http://www.nosc.mil/robots/land/robart/spie96.html

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2001\06\24@151638 by Dan Michaels

flavicon
face
Diego, I ran across the following while looking for something
else. Discusses role of CO2, sweat, etc.  Might help in your
quest for mosquito eradication.

"Mosquito Host-Seeking: a partial review"

http://www.ent.iastate.edu/dept/research/vandyk/hostseek.html

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2001\06\27@153850 by Diego Sierra

flavicon
face
Dan Michaels wrote:

> Diego, I just discoverd that the US Navy has a mosquito
> hunter-killer robot that they use when on maneuvers down
> in the tropics - claimed to be 100% effective:
>
> (check out the jpeg first)
> http://www.nosc.mil/robots/images/robart3c.jpg

Hehehe, ... I will buy one!, until then I will keep turning on the
mosquito chemical repellent every night :-)

Cheers,
Diego.

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2001\06\27@154718 by Dan Michaels

flavicon
face
Diego wrote:
>Dan Michaels wrote:
>
>> Diego, I just discoverd that the US Navy has a mosquito
>> hunter-killer robot that they use when on maneuvers down
>> in the tropics - claimed to be 100% effective:
>>
>> (check out the jpeg first)
>> http://www.nosc.mil/robots/images/robart3c.jpg
>
>Hehehe, ... I will buy one!, until then I will keep turning on the
>mosquito chemical repellent every night :-)
>

Just a cool $4,000,000 - cheap by DOD standards.

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