Verifying a 2.5mm Hole: IR Light Sensor Solution?

In summary, the conversation is discussing a part with a 2.5mm hole that can move around a slotted area due to flexing and install force. One idea suggested is using an 850nm InfraRed light and IR light sensor to verify the hole's presence. Other suggestions include using tiny photosensors with fiberoptic leads or a vision sensor with programmable detection criteria. Various manufacturers offer these types of sensors for this application.
  • #1
fitz_calc
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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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  • #3
KEYENCE makes a range of very tiny photosensors with fiberoptic leads for applications like this. Many other manufacturers, too.
 
  • #4
I think its great idea...
 

1. How does the IR light sensor solution verify a 2.5mm hole?

The IR light sensor solution uses infrared light to detect the presence of a 2.5mm hole. The sensor emits infrared light and measures the reflection or absorption of this light by the hole. If the light is reflected or absorbed, it indicates that there is a hole present.

2. What is the accuracy of the IR light sensor solution in verifying a 2.5mm hole?

The accuracy of the IR light sensor solution depends on the quality of the sensor and its calibration. Generally, it can accurately detect a 2.5mm hole with an accuracy of +/- 0.1mm.

3. Can the IR light sensor solution be used for holes smaller or larger than 2.5mm?

The IR light sensor solution is designed specifically for verifying a 2.5mm hole. It may not be suitable for holes smaller or larger than this size. However, with proper calibration and adjustments, it may be possible to use the sensor for slightly smaller or larger holes.

4. How does the IR light sensor solution compare to other methods of verifying a 2.5mm hole?

The IR light sensor solution is a non-contact, non-destructive method for verifying a 2.5mm hole. It is quick, accurate, and does not require physical contact with the object being tested. Other methods, such as calipers or micrometers, may be more time-consuming and require physical contact, which can potentially damage the object.

5. Are there any limitations to using the IR light sensor solution for hole verification?

The IR light sensor solution may not be suitable for certain materials that do not reflect or absorb infrared light, such as black or highly reflective surfaces. Additionally, the sensor may need to be recalibrated for different hole sizes or materials. It is important to consult with the manufacturer or conduct thorough testing before using the sensor for hole verification.

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