发明授权
US09116031B2 Weighing cell based on the principle of electromagnetic force compensation with optoelectronic position sensor 有权
基于光电位置传感器的电磁力补偿原理的称重电池

Weighing cell based on the principle of electromagnetic force compensation with optoelectronic position sensor
摘要:
A weighing cell based on the principle of electromagnetic force compensation and having an optoelectronic position sensor that includes a light source, a light receiver, and a shutter vane. The light receiver functions to generate a position sensor signal corresponding to a deflection of the shutter vane from a zero position which occurs as a result of placing a load onto a load receiver of the weighing cell. A controller functions to regulate compensation current in response to the position sensor signal in such a way that the shutter vane and the movable parts of the weighing cell connected to the shutter vane are returned to the zero position by the electromagnetic force between a coil and permanent magnet system of the weighing cell.
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