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Absolute encoder sensor design and construct (optical)
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Engineering & Manufacturing > Product Design

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  • Posted: Sat, Mar 30, 2013
  • Time Left: Closed
  • Location: Anywhere
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  • Start: Immediately
  • Budget: $1,000 - $5,000
  • Fixed Price Job
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I have a need for a "true absolute" encoder with a relatively tough specification. I have a design and hand-made working prototypes (proven) and I now need to have the whole design finished professionally and made into a commercial unit, hopefully with a couple of upgrades on the way.

The current design uses Avago reflective optical sensors (6 in the prototype, giving 6 bit resolution, but prefer to go higher, if feasible) using a single track grey code wheel. The specification:

- 100 degC ambient operation
- 7mm thick, or less
- Through hole mounting (e.g. to fit on 8mm gearbox shaft)
- True absolute (reading at power on without movement)
- 6 bit resolution or higher
- Ideally incorporates a high resolution (365 line) relative track for interpolation
- 23mm outer diameter of housing
- Serial digital output (e.g. CAN bus, 485) of decoded angle
- Low power consumption (battery operation)

I have all the code tracks for 7, 8, 9 bits, etc. and conversion algorithms. Can pr...

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Job ID: 39687480
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 China  |  
I have more than twelve years designing experience in Industrial Communication Device and Automation of power systems. I am proficient in...
4
  |  
 5.0   |  $680 Earnings   |  1 Jobs
Bid ID: 39690822  |  Submitted: Mar 31, 2013 01:35 ET 
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