Method and device for weighing products
AssigneeMettler-Toledo Garvens GmbH
InventorsHarald Beck, Rolf Kreimeyer
Life of this patent
Estimating the term…
Abstract
The invention relates to control scales whereon the weight of products (14) is determined in a dynamic manner during the transport thereof on a weighing strip (4) by means of filtering weight values detected during said transportation. According to the invention, said scales comprise an optimisation device which automatically determines the optimum length of filtering.
Claims10
Method for weighing products, wherein the products are individually fed to a measuring interval and conveyed along the measuring interval, during which weight values are determined at regular intervals, and mean values and variances are formed from the weight values detected on a partial interval of the measuring interval to determine the weighing result, wherein, to determine the weighing result, the partial interval with the smallest variance is selected from among a number of different partial intervals, for each of which the variance of the weight values detected on it is formed.
Device for weighing products, with a belt conveyor (4) that serves as the measuring interval, to which the products are individually delivered and on which they are conveyed in a direction of conveyance;
- with a load cell (13), on which the belt conveyor (4) is supported and which detects weight values at regular time intervals;
- with a sensor device (17), which is coordinated with the belt conveyor (4) and detects the leading end (18) and the trailing end (19) of each conveyed product (14) that passes through its detection zone;
- and with a filtering device and a selection device assigned to it for determining the weighing result on the basis of mean values and variances formed from weight values detected on a partial interval;
- wherein, to determine the weighing result, the partial interval with the smallest variance is selected by the selection device from among a number of different partial intervals, for each of which the variance of the weight values detected on it is formed.
Dependencies are inferred from the claim text.