Verifying a 2.5mm Hole: IR Light Sensor Solution?

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Discussion Overview

The discussion revolves around verifying the presence of a 2.5mm hole in a part that can flex and move within a fixture. Participants explore various sensor solutions, particularly focusing on infrared light sensors and vision sensors for this application.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant proposes using an 850nm InfraRed light directed at the hole, with an IR light sensor positioned near the slot to detect the hole's presence.
  • Another participant shares links to specific IR light sensor products that may be suitable for the application.
  • A different participant mentions that KEYENCE offers very small photosensors with fiberoptic leads that could be applicable for this type of detection.
  • One participant expresses support for the initial idea of using an IR light sensor.
  • Another suggestion is made to consider a vision sensor, which could allow for programmable detection criteria through pixel isolation.

Areas of Agreement / Disagreement

Participants present multiple competing views on the best approach to verify the hole's presence, with no consensus reached on a single solution.

Contextual Notes

Some suggestions depend on specific product capabilities and may require further exploration of their suitability for the described application.

Who May Find This Useful

Individuals interested in sensor technology, particularly in applications involving small openings and flexible components, may find this discussion relevant.

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I have a part with a 2.5mm hole that sits inside a fixture (I need to verify hole presence), the hole can move anywhere around the slotted area due to part flexing, install force, etc.

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One idea I had was point an 850nm InfraRed light from the other side at the hole, then mount an IR light sensor near the slot. Does an IR light sensor exist for an application like this? Any other ideas? Thanks!
 
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KEYENCE makes a range of very tiny photosensors with fiberoptic leads for applications like this. Many other manufacturers, too.
 
I think its great idea...
 

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