64 research outputs found
Smart load cells: an industrial application
This paper presents a data acquisition solution using a RISC type
microcontroller with a very few components around, taking
advantage of the ratiometric functioning of the load cells. The need
of thermally stable circuits is minimized through
the use of the same amplification chain for both signal and reference.
The amplification and filtering are done trough switched-capacitor
techniques controlled by the microcontroller. This option allows the
choice of the proper scale according to the platform and permits the
auto-calibration of the system.
The weighing tests show errors below 100 gr in 400 kg for an
industrial platform of 8 smart load cells. The paper also describes
an example of software calibration of a multi-load cell weigh-bridge
using one processor per smart load cell
Integrated circuits for accurate linear analogue electric signal processing
Electrical Engineering, Mathematics and Computer ScieneElectrical Engineering, Mathematics and Computer Scienc
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