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1. 发明授权

US4461363A High-speed capacitive weighing method and apparatus 失效
标题翻译：高速电容称重方法及装置
公开(公告)号：US4461363A
公开(公告)日：1984-07-24
申请号：US401680
申请日：1982-07-26
申请人： Nicholas J. Loy
发明人： Nicholas J. Loy
IPC分类号： G01G9/00 , G01N27/22 , G01G3/14 , G01G11/16 , G01G17/00
CPC分类号： G01G9/00
摘要： The mass of an object dropped through a capacitive sensing transducer having a pair of spaced plates is determined independently of the spatial orientation of the object as it passes through the transducer, and independently of whether the object is entirely within the transducer at any instant. The transducer generates an output proportional to the instantaneous change in capacitance between the spaced plates caused by the sample passing therethrough. When the sample is a powder, the transducer output is integrated, and a correction factor is subtracted from the integral for correcting for temperature drift and for accumulation of minute particles of the powder on the plates. The spaced plates can be formed in a substantially 90.degree. twist; or, the transducer may be in the form of a plurality of pairs of spaced plates, each pair being oriented at a different angle with respect to the path of a sample through the transducer.
摘要翻译：通过具有一对间隔板的电容式感测换能器落下的物体的质量独立于物体在穿过换能器时的空间取向而独立地确定，并且与物体是否在任何时刻完全在换能器内。换能器产生与由样品通过的间隔板之间的电容瞬时变化成比例的输出。当样品是粉末时，传感器输出被积分，并且从积分中减去校正因子以校正温度漂移并且将粉末的微小颗粒堆积在板上。间隔板可以形成为大致90度的捻度; 或者，换能器可以是多对间隔板的形式，每对相对于通过换能器的样品的路径以不同的角度取向。

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