Inductive Proximity Switch Build Help

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SUMMARY

The discussion centers on building an inductive proximity detector for rail wheel detection, utilizing an oscillator connected to a coil to count pulses and detect changes in coil saturation. The user references NAMUR inductive switches as a similar technology and seeks guidance on resonators for sensor design. The conversation indicates that the user has a foundational understanding of the principle of operation and is looking for further insights into refining their design.

PREREQUISITES
  • Understanding of inductive proximity sensors
  • Familiarity with oscillators and pulse counting
  • Knowledge of coil saturation principles
  • Basic concepts of NAMUR inductive switches
NEXT STEPS
  • Research the design and functionality of NAMUR inductive switches
  • Explore advanced oscillator designs for improved pulse detection
  • Investigate resonator technologies applicable to inductive sensors
  • Study coil saturation effects and their impact on sensor performance
USEFUL FOR

Electronics engineers, sensor designers, and anyone involved in rail detection systems or inductive sensor technology.

andrewvanh
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I am trying to put together an inductive proximity detector for Rail Wheel detection. Currently we use an oscillator connected to a coil. We then count pulses on the oscillator and measure a detect when coil saturation changes the pulse.

There are similar industries that use NAMUR inductive switches.

The only information I have found on these is at http://www.tektron.ie/namur1.htm. I would like to build a sensor similar to this and see about how it functions. Anyone familiar with resonators more so than I that can provide some input into where to start?

Thanks
Andrew
 
Last edited by a moderator:
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It seems that you answered your own question. Both as to the principle of operation, and a description of a refined design.

What more do you want from us?
 

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