1 mm accuracy IC sensor

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Hello,

 

anyone knows of any distance IC sensor (max size similar to a TQFP48 package), touchless (laser, tof ,reflective,... ), with accuracy of +/- 1 mm. Distance i need to sense is 1 mm to 100 mm.

I checked ton of site but best i found in this size had accuracy of +/- 5mm. Thanks for any help in advance.

 

Kind regards.

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The St Vl6180 and VL53L0X are most likely the start of the art at the moment. MM resolution is possible, but I'd suggest MM accuracy is asking a bit much the the technology as we know it.

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Thanks, then i guess i will go with reflective type sensor like  HSDL - 9100 and try to calibrate it for my reflective material/accuracy/range and hope for the best :D

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Klemko wrote:
...  with accuracy of +/- 1 mm.
after a two-point calibration; inherent precision meets that requirement :

Common Inductive and Capacitive Sensing Applications

by Mubina Toa

January 2020

[page 10]

5 LDC: Metal Proximity Sensor

LDC - Inductance-to-Digital Converter

via https://www.ti.com/product/LDC1001/technicaldocuments

due to LDC1001/Q1 Inductance to Digital Converters - TI | Mouser

 

"Dare to be naïve." - Buckminster Fuller

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 distance IC sensor

Distance to what?  Paper, molten aluminum, water?  It can make a big difference! 

 

here is an ultrasonic one that is very small

https://www.murata.com/-/media/webrenewal/products/sensor/ultrasonic/open/applinote_masmd.ashx?la=en

When in the dark remember-the future looks brighter than ever.   I look forward to being able to predict the future!

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Thanks for info, i ordered VL6180X-SATEL board (and also VL53L1X)from ST and will see how much i can get out of the sensor.  Materials that is measured are different kinds and colors of textile. That is why i went with ToF technology.

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Bigger than a TQFP48 and I assume uses phase measurement rather the ToF but this might work for you

 

https://www.panasonic-electric-works.com/eu/hg-c-measurement-sensor.htm#product-description-Download

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Klemko wrote:

anyone knows of any distance IC sensor (max size similar to a TQFP48 package), touchless (laser, tof ,reflective,... ), with accuracy of +/- 1 mm. Distance i need to sense is 1 mm to 100 mm.

I checked ton of site but best i found in this size had accuracy of +/- 5mm. Thanks for any help in advance.

 

I remember this went past a few weeks back

 

https://www.edacafe.com/nbc/articles/1/1724721/TDK-announces-availability-new-MEMS-based-sonar-silicon-chip-ultrasonic-time-of-flight-sensor-with-extended-sensing-range

https://www.tdk-electronics.tdk.com/download/2431644/f7219af118484fa9afc46dc1699bacca/02-presentation-summary.pdf

 

CH-201   3.5 mm x 3.5 mm x 1.25 mm  Range: Up to 5 m  Range jitter : 1mm RMS (typical)   I2C Up to 180'

 

The PDF claims better noise, the CH-101 with 1m range is stocked.

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Thank you, i will check them out.

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This are sadly too big for my application. But thank anyway.

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This are sadly too big for my application. But thank anyway.

What is your application---maybe there is some other type or method that can help. 

When in the dark remember-the future looks brighter than ever.   I look forward to being able to predict the future!

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OK let  me try to explain my application. Lets say you have something a size of a 0.7l whiskey bottle, that has its inside covered by a fabric of random thickens and you wish to measure its inside measurements.  Basically what i need to do is make a low resolution (but high accuracy) 3D scan of its interior. 

So i planned to make like a magic stick covered with like 20 to 50 sensors, that you can put inside the bottle shaped object and it reads internal height, width and length.

Basically it would function like a miniature Lidar.

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Why not use a single laser phase measuring spot thing at the neck of the "bottle" and bounce it off a 45 degree mirror that spins around inside the bottle.   Then the sensor does not have to be small enough to enter the neck - only the mirror and the laser beam.  I believe laser beams don't take up much volume.

 

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Another idea is  to use fiber optics...each sensor can be a fiber going into the "bottle", perhaps with some lensing.  There are ways to use fibers in making small distance measurements, like micrometers (perhaps even relective types)

When in the dark remember-the future looks brighter than ever.   I look forward to being able to predict the future!