Weighing Scale

Weighing Scale The system consists mainly of a 24-bit ADC for load cell sensing, a DSP for signal processing and a 8-bit microcontroller for interface. ADS1255 implementation A 24-bit converter was selected since the aim of the board is to serve as an interface to any of the load cells used across the different weighing points, without the need of an amplification stage. Thus making the calibration easier, in comparison with the current weighing system that requires manual adjustment of the amplifier gain. The menu interface is user-friendly. Calibration is achieved just by pressing a few buttons. First, zero offset correction is corrected by selecting "Calibration -> Zero". Then a full scale load is placed on the weighing platform, the option "Calibration -> Pattern" is selected, the user inputs the weight expressed in grams and then confirms. The system calculates the necessary parameters after which the system is ready to be used. Ma...