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    • 5. 发明授权
    • System and method for counting nominally identical articles by weight
    • 按照重量计算名义上相同的物品的系统和方法
    • US08283580B2
    • 2012-10-09
    • US12311011
    • 2007-09-20
    • Duncan McPhailNeil James HunterWilliam Wright Hamilton
    • Duncan McPhailNeil James HunterWilliam Wright Hamilton
    • G01G19/42G01G23/10
    • G01G19/42G01G23/10
    • A method and apparatus for counting nominally identical articles employs weighing apparatus, which comprises a load hod (102) for holding a number of articles to be weighed and a load transducer (20) responsive to loading of the hod (102) to produce a derived electrical signal indicative of the apparent weight of articles in the hod (102). The signal is susceptible to fluctuation as a result of local air currents acting on the hod (102) or on the articles contained therein. The transducer derived signal is filtered to extract a component signal representative of such fluctuation. After further processing, the filtered component signal is used to correct the original transducer signal thereby to indicate the true weight of articles in the hod (102). The number of articles in the hod (102) is then determined by dividing the true weight indication by an expected average weight of an article. Fluctuations in the transducer signal due to air currents may also be removed by a system of validation of the signals depending on whether or not they are within range limits based on a running average.
    • 用于计数名义上相同的制品的方法和装置使用称重装置,其包括用于保持多个待称重物品的装载头(102)和响应于所述炉(102)的装载的负载传感器(20),以产生衍生 电信号,表示物品(102)中物品的表观重量。 由于局部气流作用在炉体(102)或其上所含的物品上,该信号容易发生波动。 对换能器导出信号进行滤波以提取代表这种波动的分量信号。 在进一步处理之后,滤波后的分量信号用于校正原始换能器信号,从而指示炉头(102)中物品的真实重量。 然后通过将真实重量指示除以物品的预期平均重量来确定盘(102)中的物品数量。 由于气流引起的传感器信号的波动也可以通过信号的验证系统去除,这取决于它们是否在基于运行平均值的范围限度内。