Measurement of extra-small distances
Measurement of extra-small distances
(OP)
Hello,
I am currently working on seats for the automotive industry and I would like to detect the presence of a small plastic joint automatically. When this small joint is not present, another part of the mechanism is able to move a few millimeters. I thought of using a proximity sensor with contact to measure the position of this part with the joint and set it as a reference. Then, for each test, the part can be pushed from the opposite side of the sensor by a spring and the difference between the measure and the reference can be calculated.
Do such sensors exist? Is there another solution?
Thanks.
Vianney
I am currently working on seats for the automotive industry and I would like to detect the presence of a small plastic joint automatically. When this small joint is not present, another part of the mechanism is able to move a few millimeters. I thought of using a proximity sensor with contact to measure the position of this part with the joint and set it as a reference. Then, for each test, the part can be pushed from the opposite side of the sensor by a spring and the difference between the measure and the reference can be calculated.
Do such sensors exist? Is there another solution?
Thanks.
Vianney





RE: Measurement of extra-small distances
ht
This has the advantage of being tolerant of most material or surface properties.
TTFN

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RE: Measurement of extra-small distances
And I would prefer something not too expensive but that is not the most important.
Thanks.
RE: Measurement of extra-small distances
I strongly suggest you get a sample into a lab and measure the force vs deflection curve with and without the missing part. Then decide on an appropriate pass fail criteria.
Cheers
Greg Locock
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RE: Measurement of extra-small distances
Laser is light, so if it reflects, and is not transparent, there is no issue.
The Sick laser has resolution down to 0.05 mm
TTFN

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