发明授权
- 专利标题: Weighing cell based on the principle of electromagnetic force compensation with optoelectronic position sensor
- 专利标题(中): 基于光电位置传感器的电磁力补偿原理的称重电池
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申请号: US13780864申请日: 2013-02-28
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公开(公告)号: US09116031B2公开(公告)日: 2015-08-25
- 发明人: Christophe Béguin , Thomas Köppel , Stephan Baltisberger
- 申请人: Mettler-Toledo AG
- 申请人地址: CH Greifensee
- 专利权人: Mettler-Toledo AG
- 当前专利权人: Mettler-Toledo AG
- 当前专利权人地址: CH Greifensee
- 代理机构: Standley Law Group LLP
- 优先权: EP12157426 20120229
- 主分类号: G01G7/04
- IPC分类号: G01G7/04 ; G02B6/26 ; G01G7/02 ; G02B6/42 ; G02B7/00 ; G06F3/03
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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