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Author Topic: Advisable sensor (type and model) to detect very near objects  (Read 1902 times)

Offline danechi08

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Advisable sensor (type and model) to detect very near objects
« on: November 17, 2009, 08:52:01 PM »
anu pong maiaadvise nu na sensor (type, and model), na maglologic one lang pag super lapit na ung object?as in mga 1-5 mm nlng ung distance dun lang xa maglologic one...gagamitin ko kasi sa automatic pencil sharpener.pag ung tip ng pencil ay super lapit na dun sa sensor, maglologic one ung sensor, then papatayin nya motor.aun.thanks
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Advisable sensor (type and model) to detect very near objects
« on: November 17, 2009, 08:52:01 PM »

Offline Born2BeWired

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Re: Advisable sensor (type and model) to detect very near objects
« Reply #1 on: November 17, 2009, 09:41:42 PM »
Gamitin mo microswitch para simple at mura. Maraming available sizes and form factor ang microswitch. Pick the one suitable for your application.
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Re: Advisable sensor (type and model) to detect very near objects
« Reply #1 on: November 17, 2009, 09:41:42 PM »

Offline danechi08

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Re: Advisable sensor (type and model) to detect very near objects
« Reply #2 on: November 17, 2009, 09:45:13 PM »
microswitch?meron po nun sa egizmo or alexan?
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Re: Advisable sensor (type and model) to detect very near objects
« Reply #2 on: November 17, 2009, 09:45:13 PM »

Offline Mayalin22

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Re: Advisable sensor (type and model) to detect very near objects
« Reply #3 on: November 17, 2009, 09:47:26 PM »
suggest lang to... yung encoder ng mouse pwede cguro  :D liit lang non
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Re: Advisable sensor (type and model) to detect very near objects
« Reply #3 on: November 17, 2009, 09:47:26 PM »

Offline danechi08

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Re: Advisable sensor (type and model) to detect very near objects
« Reply #4 on: November 17, 2009, 09:54:18 PM »
ay required pla na sensor  ung gamitin, so nde considered ung microswitch..
ung sa mouse?/prang optocoupler ?e dba po, mag logic 1 parin un kht malayo medyo distance?
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Re: Advisable sensor (type and model) to detect very near objects
« Reply #4 on: November 17, 2009, 09:54:18 PM »

Offline Mayalin22

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Re: Advisable sensor (type and model) to detect very near objects
« Reply #5 on: November 17, 2009, 10:01:30 PM »
pag na-block ang slot non magbabago ang state ng output.



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Offline rdpzycho

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Re: Advisable sensor (type and model) to detect very near objects
« Reply #6 on: November 17, 2009, 10:11:51 PM »
sensor:

A device or organ that detects certain external stimuli and responds in a distinctive manner

detector: any device that receives a signal or stimulus (as heat or pressure or light or motion etc.) and responds to it in a distinctive manner

it's a common misconception na 'di sensor ang mga simpleng bagay. minsan kasi pinapa-complicate din ng prof ang requirements, pero sa engineering world, the simpler you implement it, the better engineer you are. ;)

'yung sa mouse, makikita mo 'yung may wheel na may slot. ;)
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Offline danechi08

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Re: Advisable sensor (type and model) to detect very near objects
« Reply #7 on: November 18, 2009, 08:49:11 PM »
ok thanks po.
sa tingin nu anu suitable for this application?

capacitive sensor? or optosensor na very near lang range
??
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Offline Shey

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Re: Advisable sensor (type and model) to detect very near objects
« Reply #8 on: November 18, 2009, 08:55:49 PM »
Quote from: danechi08 on November 18, 2009, 08:49:11 PM
ok thanks po.
sa tingin nu anu suitable for this application?

capacitive sensor? or optosensor na very near lang range
??

I would suggest reflective object sensor like CNY70 or OPB607 available in RS Philippines or Farnell Philippines..
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Offline Mayalin22

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Re: Advisable sensor (type and model) to detect very near objects
« Reply #9 on: November 18, 2009, 09:53:00 PM »
parang mahirap i-sense ang tip ng pencil kung capacitive sensor gagamitin.. pwera na lang kung higanteng pencil  :D :D :D

mainam talaga dyan opto.
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Offline danechi08

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Re: Advisable sensor (type and model) to detect very near objects
« Reply #10 on: November 21, 2009, 11:54:48 PM »
so, ung CNY70 po kea, magbabago ang state kung madedetect nia ang longitudinal area ng lead at the back of sharpener?ung po kc problem namin, since medyo manipis ang lead ng pencil.tas ung ilalim nmn ng sharpener ay may gear attached to the motor.
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Offline ferdie444

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Re: Advisable sensor (type and model) to detect very near objects
« Reply #11 on: November 22, 2009, 12:19:59 AM »
bro,try to look proximitor switch probe.bale inductive type yan(made of coil) @ ang typical application nyan ay limit switch tulad ng ginagamit namin dine sa planta na indicator for close & open position ng mga control valves.pag ang tip ng proximitor ay nalapatan ng object(metal/conductor) ay mag-iiba ang output noon once na nakabit sa switching circuit.another application ay sa vibration monitoring & measurement.lahat ng vibration probe ay may gap voltage(initial position/setting),so pag lumaki ang gap ay tumataas ang gap volt. @ pag lumiit ay bumababa ang g.v.till zero even vert. & horiz. position.i think pupwede ito sa application mo.try to search bentley nevada products @ baka may available na dealer dyan sa pinas or dyan sa raon na equivalent.thanks and good luck.
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Offline tiktak

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Re: Advisable sensor (type and model) to detect very near objects
« Reply #12 on: November 22, 2009, 12:22:00 AM »
how about itong photo reflective sensor na ito kayang kaya nyang i detect ang malapitan at medyo maliit din sa tingin ko kaya naman nya ang sa lapis

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insomartin

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Re: Advisable sensor (type and model) to detect very near objects
« Reply #13 on: November 22, 2009, 12:28:29 AM »
these are cost efficient way of detecting objects. microswitch have a switching offset of at lease .5mm meaning it can detect and switch (logic high or low or bahala kna).
meron sa egizmo, deeco at alexan nito. add more if you need to. smaller the better.

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Offline kelvinblank

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Re: Advisable sensor (type and model) to detect very near objects
« Reply #14 on: November 22, 2009, 01:04:06 AM »
idol tlg mga tao d2
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Offline danechi08

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Re: Advisable sensor (type and model) to detect very near objects
« Reply #15 on: November 22, 2009, 06:32:29 AM »
wow.andamin nu pong naitulong.super duper salamat!.!

ferdie, electron and tiktakz, thanks=)!on my way to raon to search for those items=)

Don martin.wow.career mode.thanks sa visual representation.kaso, nde dw tlga pde microswitch smin.try q ulit kulitin.sna pumayag.
thanks sa inyong lahat!.ill try yo update you for the improvement
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Offline ferdie444

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Re: Advisable sensor (type and model) to detect very near objects
« Reply #16 on: November 24, 2009, 12:11:38 AM »
@danechi08, you're welcome bro @ ganyan talaga dito sa forum...tulungan.good luck....
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Offline danechi08

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Re: Advisable sensor (type and model) to detect very near objects
« Reply #17 on: November 24, 2009, 09:51:32 PM »
girl nga po pla q.nde boy.hahaha.=)
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Offline danechi08

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Re: Advisable sensor (type and model) to detect very near objects
« Reply #18 on: November 24, 2009, 10:08:13 PM »
ay guys, pinayagan na pla kami na microswitch gamitin.aun.anu kaya magandang orientation nung microswitch with respect to the sharpener's side, since the bottom is already occupied by the gear
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insomartin

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Re: Advisable sensor (type and model) to detect very near objects
« Reply #19 on: November 24, 2009, 10:11:33 PM »
Quote from: Don Martin on November 22, 2009, 12:28:29 AM
these are cost efficient way of detecting objects. microswitch have a switching offset of at lease .5mm meaning it can detect and switch (logic high or low or bahala kna).
meron sa egizmo, deeco at alexan nito. add more if you need to. smaller the better.


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Re: Advisable sensor (type and model) to detect very near objects
« Reply #19 on: November 24, 2009, 10:11:33 PM »
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