Abstract:
One aspect described herein includes a capacitive screen smart scale system to determine a weight of an object. The system includes a non-transitory memory storing computer-executable instructions and a processor configured to facilitate execution of said instructions. The system determines a pattern of at least two touch points that indicates that a weight table is on a capacitive touch screen, calibrates the weight table with no object present, and determines a weight of an object on the weight table by determining a difference between calibrated values of the at least two touch points and weighted values of the at least two touch points with the object present on the weight table. Capacitive screen smart scale methods and weight tables for use in determining a weight of an object are also described herein.
Abstract:
A method of adjusting a zero point in a process for combination weighing or counting, having the steps of weighing articles with a plurality of weighing instruments, calculating a value from a combination of the values of the weights of the articles in the respective weighing instruments or of the number of the articles converted from the values of the weights of the articles, selecting the combination of weights or the number of the articles equal to or nearest to a set value and discharging the articles corresponding to the selected combination from the weighing instruments. This method can automatically adjust the zero point of a predetermined weighing instrument selected from the weighing instruments which already discharged the articles without stopping the operation of the weighing instruments with every discharge.
Abstract:
A high accuracy coal weighing feeder is comprised of an input funnel (2), an output means (10), a feeder shell (5), a conveyor belt (4), a drawing strickle scavenging machine (9), a tacho-generator (11) and weighing means. The weighing means include three weighers(3,7,12) which are set below the conveyor belt (4), two weighers (3,7) are adjacently positioned upstream from the input funnel and one weigher (12) is positioned downstream from the input funnel. Each weigher has a check weights (8), a gas inlet valve (17) is set on the check weights and connected to a gas blow pipe (18). The three weighers (3,7,12) and the tacho-generator (11) are connected to an integrated metering device by signal cables. The present weighing means can realize automatic calibration, automatic comparison and the zero point continuously determined on line.
Abstract:
A semiconductor wafer metrology technique comprising performing atmospheric buoyancy compensated weighing of a wafer, in which the wafer is weighed in a substantially upright condition. A vertical or near vertical wafer orientation causes the surface area in the direction of a force (weight) sensor to be reduced compared with a horizontal wafer orientation. Hence, the electrostatic force components acting in the same direction as the wafer weight force component is reduced.