Automatic zeroing of scales with digital display

专利名称：Automatic zeroing of scales with digital

display

发明人：Waltteri Matilainen申请号：US05/663125申请日：19760302公开号：US04044846A公开日：19770830

摘要：A system for the automatic zero setting of scales having digital display of theweight is provided so that at tare weight of a bridge mechanism connected to a weighingpan of the scale the display will be as closely equal to zero as possible. Amplifiers and avoltage/frequency transducer are connected to the electrical measuring bridge. Apresettable counter connects with the voltage/frequency transducer. The counter ispreset so that at tare weight of the bridge mechanism the reading of the scale will be asclose to zero as possible. In the path of the information going to the counter a correctionunit is arranged. The count provided by the counter is observed by a differentiating unitfor detecting deviations of a given magnitude in one direction or the other from a countvalue which produces a zero indication. The differentiating unit then supplies thecorrection order and direction of correction to the correction unit.

申请人：MATILAINEN; WALTTERI

代理机构：Hill, Gross, Simpson, Van Santen, Steadman, Chiara & Simpson

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