INTELLIGENT SIGNAL

77ris paper describes a data acqui.\'ition.\'olution using a single chip risc type microcontroller with ver) ' Jew other active and passive component.\ ' Howevcr this solution although greatly reducing tile around. 77re need Jor thermallY stable circuits and commissioning time of wcighbridge. type equiprncnt components is minimized through lhe use oJ lhe some needs a cost effectivc solution for the load cclls data amplification chain Jor both lhe...ignal and reJerence. proccssing so that is not uneconornical to use one per together with soflware calibration. The analog to transduccr. digital conversion is done u...ing lhe single ramp approach controlled by lhe microcontroller which Having in rnind industrial wcighing applications doe... ali lhe digital proce ing required as well a.. whcre (,()()() divisions are nccded for the equiprnent lhe serial communication with lhe external world. (external divisions) a conversion resolution of at least 77re paper also describes an example oJ soflware 60000 divisions (10 infernal divisions for cach calibration oJ a multi-loadcell weighhridge using cxternal) with 20 or more rcadings per second. ai one single processing module per sensor. lcast for static weighing applications. For dynarnic weighing a fastcr reading cate is required but wit