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Posted by Fulliautomatix on March 17, 2007, 7:35 am
Please log in for more thread options rolfedh@gmail.com wrote:
> I'd like to generate a colored 'heat map' of readings from a hand-held
> sensor being moved around a room by a person.
>
> I envisioned something like having two "measuring spools" (or ranging
> instruments), separated by a known distance, measuring the distance to
> the sensor.
String pull encoders???
> If one knows the length all three sides of a triangle, how does one
> get the x,y coordinates of the sensor?
It is at the intersection of the two circles of radius "measured
distance" centred at the measuring device.
r1^2=x1^2+y1^2
r2^2=x2^2+y2^2
x1=x2, y1=y2
Anyway...I'll get back to that
Any recommendations on:
> - Other cost-effective or easy (out of the box) methods for achieving
> this result.
easy? nope
- Software for transforming a signal and x,y coordinates into a color
> image.
Matlab
a VB script
Excel
look up RGB format - I think it is fairly easy to make an image from
data arranged in the right fashion.
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> get the x,y coordinates of the sensor?