Document Type : Research Paper


Computer Engineering Department, Collage of Engineering, University of Mosul


The paper presents and discusses how to use some  software techniques to handle the  error in the  weighing signal that  is  produced from a load cell . The load cell is the best sensor used to  transform the weight to an electrical signal.   In  industry the production of an accurate  weighing signal suffers from a noisy environment. Different sources of noise like electromagnetic fields from machines, motors,   microwaves and power lines  in addition to tempreture variations and humidity have significant effects on weak electrical signals produced by load cells. The software filtering is adopted to reduce or remove  the unwanted effects. The measured combined error is 0.416% when the load is 6000g. The error normal distribution has a sigma improvement equals to 6.922%. With the adaptive hardware gain the measurement time is reduced by about 20%.


Main Subjects