Measuring Distance on a Cylinder - Ideas & Opinions Wanted

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SUMMARY

The discussion centers on measuring distance between two points on a cylinder with a diameter of 300 mm, specifically 200 mm apart. The proposed method involves using two lasers mounted 200 mm apart to measure the time of flight of the beams. However, participants suggest that time of travel may not be effective for this measurement and recommend considering interferometry or ultrasound as alternative methods. The feasibility study for the design and laser specifications is also a key focus.

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  • Understanding of laser measurement techniques
  • Familiarity with interferometry principles
  • Knowledge of ultrasound distance measurement
  • Basic concepts of cylindrical geometry
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  • Research laser specifications for distance measurement applications
  • Explore the principles and applications of interferometry
  • Investigate ultrasound measurement techniques for cylindrical surfaces
  • Study the effects of geometry on laser measurement accuracy
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Engineers, researchers, and technicians involved in precision measurement, particularly those working with cylindrical objects and laser technology.

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Hi all
I have assigned a task to measure distance at two points separated 200 mm apart on a cylinder having diameter about 300 mm dia. The distance from point and measuring point will be 150 mm and that of for second point will be 150.05mm.I have an idea of using two lasers mounted 200 mm apart on a fixture and measure the time traveled by both beams and calculate the distance.
But I am looking after opinion for design in view to carry out feasbility study in details.I also welcome the thoughts/opinion for laser specifications and suppliers thereof.
All thoughts are highly appreciated.
thanks
 
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Could you show a diagram of your setup? I don't think, at these distances, that time of travel will be an effective means to measure distance. Would your setup lend itself to interferometry?
 
Perhaps you could think in terms of ultrasound instead of light?
 

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