[Diy_efi] [Diy_efi]: prop sensing

[Tom Sharpe]

Strain gauge on the motor mounts....... Tom
On Mon, 22 Apr 2002 09:58:46 +0100, "Rich M" <richm at ntlworld.com> wrote :

> I believe the 'standard' method of non-contact signal transfer is by using
> inductive coupling to transfer power to the measurement circuit and signal
> back.
> 
> Cheers
> Rich
> 
> -----Original Message-----
> From: diy_efi-admin at diy-efi.org [mailto:diy_efi-admin at diy-efi.org]On
> Behalf Of bill.shurvinton at nokia.com
> Sent: 22 April 2002 09:20
> To: Diy_efi at diy-efi.org
> Subject: RE: [Diy_efi] [Diy_efi]: prop sensing
> 
> 
> Might not be a digital solution :-)
> 
> -----Original Message-----
> From: ext Stephen Andersen [mailto:SAndersen at advan-tek.com]
> Sent: Monday, April 22, 2002 12:26 AM
> To: 'Diy_efi at diy-efi.org'
> Subject: RE: [Diy_efi] [Diy_efi]: prop sensing
> 
> 
> INteresting concept.  I would suspect it would require
> very high sample rates, and also would require some
> type of slip-ring to get the signals from the gauges
> out.  The problem with slip-rings is that they can
> be very noisy for a low-signal data acq. situation.
> 
> Good ones could be pricy...
> 
> Steve
> 
> > -----Original Message-----
> > From: diy_efi-admin at diy-efi.org [mailto:diy_efi-admin at diy-efi.org]On
> > Behalf Of William Shurvinton
> > Sent: Sunday, April 21, 2002 4:48 PM
> > To: Diy_efi at diy-efi.org
> > Subject: [Diy_efi] [Diy_efi]: prop sensing
> >
> >
> > There was a thread some months back talking about the all
> > pervading knock
> > sensing issue where someone mentioned torque sensing. Was
> > talking with a
> > good friend yesterday who does a lot of work with some major
> > UK race teams
> > and  he said that he regularly fits strain guages to
> > propshafts cranks etc
> > Got me thinking and I wondered if anyone had any practical
> > experience of
> > this sort of stuff and whether it is DIY doable. Certainly to me seems
> > easier than doing a load of DSP on a microphone to try and
> > measure knock,
> > but I suspect I have overlooked some fundamentals somewhere.
> >
> > Bill
> >
> >
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