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1. 发明公开

EP0283291A3 Differential magnetic proximity detector 失效
标题翻译：差分磁性近似检测器
公开(公告)号：EP0283291A3
公开(公告)日：1990-08-08
申请号：EP88302355.8
申请日：1988-03-17
申请人： SPRAGUE ELECTRIC COMPANY
发明人： Higgs, Jacob Kirkpatrick , Gibson, Barbara Louise
IPC分类号： H03K17/95 , H03K17/97
CPC分类号： H03K17/9517
摘要： A proximity detector includes a magnet having steel or iron pole piece plates mounted at front and rear pole ends of the magnet, and a silicon integrated circuit mounted to the outer surface of the front pole piece centered about at the magnet pole axis. The integrated circuit includes two essentially identical Hall elements having outputs connected series opposing, i.e. differentially rather than aiding, so that distortion of the magnet field ambient to the integrated circuit caused by a ferromagnetic article passing by results in a gradient field between the Hall elements producing a differential output signal. The dual Hall element integrated circuit leads to a low differential composite offset voltage while the front pole piece renders the magnetic flux density much more uniform further reducing this dual-Hall-element composite offset voltage.
摘要翻译：接近检测器包括安装在磁体的前端和后极端处的具有钢或铁极片的磁体，以及安装到以磁极轴为中心的前极片的外表面的硅集成电路。集成电路包括两个基本相同的霍尔元件，其具有串联相对的输出，即差异地而不是辅助，使得由铁磁物品导致的集成电路的磁场环境的失真通过导致霍尔元件之间的梯度场产生差分输出信号。双霍尔元件集成电路导致低差分复合失调电压，而前极片使磁通密度更均匀化，进一步减小了这种双霍尔元件复合失调电压。

2. 发明公开

EP0283291A2 Differential magnetic proximity detector 失效
标题翻译： Magnetischer Differential-Näherungsdetektor。
公开(公告)号：EP0283291A2
公开(公告)日：1988-09-21
申请号：EP88302355.8
申请日：1988-03-17
申请人： SPRAGUE ELECTRIC COMPANY
发明人： Higgs, Jacob Kirkpatrick , Gibson, Barbara Louise
IPC分类号： H03K17/95 , H03K17/97
CPC分类号： H03K17/9517
摘要： A proximity detector includes a magnet having steel or iron pole piece plates mounted at front and rear pole ends of the magnet, and a silicon integrated circuit mounted to the outer surface of the front pole piece centered about at the magnet pole axis. The integrated circuit includes two essentially identical Hall elements having outputs connected series opposing, i.e. differentially rather than aiding, so that distortion of the magnet field ambient to the integrated circuit caused by a ferromagnetic article passing by results in a gradient field between the Hall elements producing a differential output signal. The dual Hall element integrated circuit leads to a low differential composite offset voltage while the front pole piece renders the magnetic flux density much more uniform further reducing this dual-Hall-element composite offset voltage.
摘要翻译：接近检测器包括安装在磁体的前端和后极端处的具有钢或铁极片的磁体，以及安装到以磁极轴为中心的前极片的外表面的硅集成电路。集成电路包括两个基本相同的霍尔元件，其具有串联相对的输出，即差异地而不是辅助，使得由铁磁物品导致的集成电路的磁场环境的失真导致在霍尔元件之间产生梯度场差分输出信号。双霍尔元件集成电路导致低差分复合失调电压，而前极片使磁通密度更均匀化，进一步减小了这种双霍尔元件复合失调电压。

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