loadcell digital filter
$250-750 USD
Paid on delivery
Dear ,
I need a freelancer with LOTS of experience with digital filters.
I am currently working on a weight measuring crane for light weights (20 gram till 2 kg) using a 10kg load cell fixed on an arm and a load cell amplifier that returns digital information to my STM32G4 controller.
I need to be able to measure the weight of an object with 5 gram resolution as fast and precisely as possible, while the weight is moving up.
However, I am facing 2 kinds of distortion in the weight measurement :
1) High frequency noise from motor's and digital communication lines near the loadcell. The distortion consists of bursts in the 115kbaud data stream, which can repeat as low as every 10ms.
2) Slow mechanical distortion and damped sinusoid (pendulum) in the weight information due to the moving of the arm.
This mechanical movement of the arm is also measured by an accelerometer , so it should be possible to use this info as input together with the loadcell information input to filter out any mechanical movement of the arm.
As the mechanical distortion is always the same in nature, i think we can get good results with adaptive filtering.
For this task i need a freelancer good in Mathematics , digital adaptive filtering, and some understanding of programming/software. I will do the implemementation in C.
I can deliver data from loadcell and accelerometer to work with.
When you are interested please show me how experienced you are in this matter.
Thank you for your consideration.
Best regards,
Project ID: #36546513
About the project
28 freelancers are bidding on average $434 for this job
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