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PLUS+1™ Software => General controls => Topic started by: F.M.Elettromeccanica on November 22, 2019, 05:40:58 PM

Title: Cross slope sensor scale
Post by: F.M.Elettromeccanica on November 22, 2019, 05:40:58 PM
Hi all,
i have to use an inclination sensor to control a levelling system, i connect Can King and i see this:

ID: 1560 D1 and D2 i decode and insert in a COMBINE S16, i see exactly 10000  -10000 output on -90 +90 Xaxis degree.
but when i scale it the angle does not change linearly.
i can see when i'm on a perfect Zero, but at 30 degrees i read 44.....at 45 degrees i read 65 etc....
where i'm doing wrong?

thanks
Title: Re: Cross slope sensor scale
Post by: SJ Industries on November 22, 2019, 07:54:42 PM
You have probably already checked but is the sensor output linear throughout its range? Or does it have a curve, to give a higher degree of precision below 45 degrees?
Title: Re: Cross slope sensor scale
Post by: oiltronic on November 22, 2019, 11:16:49 PM
Does it reach 10000 (100%) at around 70 degrees, not 90?  45/.65 = 69, and 30/.44=68, which implies the limit is more like 69 degrees.

Does the output increase continually from 0 to 90 degrees?   Or jump back down to a lesser value on occasion?  If so, it might an integer wrap-around, caused by a byte ordering error, 8-bit limit, etc.
Title: Re: Cross slope sensor scale
Post by: F.M.Elettromeccanica on November 23, 2019, 01:07:58 AM
first of all thanks to all, the output increases up to 90 degrees, never coming back.  but it is not linear.  at 45 degrees for example I read an output of 7000. at 30 degrees an output of about 5000.
Title: Re: Cross slope sensor scale
Post by: F.M.Elettromeccanica on November 23, 2019, 09:32:36 AM
You have probably already checked but is the sensor output linear throughout its range? Or does it have a curve, to give a higher degree of precision below 45 degrees?
It has a curve
Thanks