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1. 发明申请

WO2013007646A3 METAL DETECTOR FOR PRODUCTION AND PACKAGING LINES 审中-公开
标题翻译：金属检测器生产和包装线
公开(公告)号：WO2013007646A3
公开(公告)日：2013-06-06
申请号：PCT/EP2012063283
申请日：2012-07-06
申请人： METTLER TOLEDO SAFELINE LTD , BUTTERWORTH DAREN
发明人： BUTTERWORTH DAREN
IPC分类号： G01V3/10 , G01R33/025
CPC分类号： G01N27/00 , G01R33/025 , G01V3/10
摘要： A metal detector (20) has a metallic enclosure (21) with an entrance aperture (30) and an exit aperture (31). Arranged inside the enclosure (21) is a coil system with a transmitter coil and a first and a second receiver coil bounding a detection zone (28) which extends between the entrance and exit apertures (30, 31) and through which objects under inspection (2) travel. Relative to the travel direction (13), the first and second receiver coils are arranged on opposite sides of the transmitter coil. The first and second receiver coils are connected in series with each other, but their windings are wired with the opposite sense of rotation relative to each other. When the transmitter coil is energized by an alternating electric current, a metal contamination in an object under inspection (2) generates a detection signal in the otherwise balanced receiver coils. To cancel an undesirable sensitivity to metallic objects outside of the detection zone (28), the metal detector (20) has a first cancelling means (26) arranged at the entrance aperture (30) to cancel the undesirable influence of metallic objects beyond a first distance (d) upstream of the coil system and/or a second cancelling means (27) arranged at the exit aperture (31) to cancel the undesirable influence beyond a second distance (e) downstream of the coil system. The first and second cancelling means (26, 27) are different from each other and, consequently, the first and second distances (d, e) are likewise different from each other.
摘要翻译：金属检测器（20）具有带有入口孔（30）和出口孔（31）的金属外壳（21）。在外壳（21）内布置的是具有发射器线圈和限定检测区域（28）的第一和第二接收器线圈的线圈系统，该检测区域（28）在入口孔和出口孔（30,31）之间延伸并且被检查物体 2）旅行。相对于行进方向（13），第一和第二接收线圈布置在发射器线圈的相对侧上。第一和第二接收器线圈彼此串联连接，但是它们的绕组以相对于彼此的相反的旋转方向布线。当发送器线圈被交流电流通电时，被检查物体（2）中的金属污染物在平衡的接收器线圈中产生检测信号。为了消除对检测区域（28）外的金属物体的不期望的灵敏度，金属检测器（20）具有布置在入口孔（30）处的第一抵消装置（26），以抵消金属物体超出第一在线圈系统的上游距离（d）和/或布置在出口孔（31）处的第二抵消装置（27），以消除超过线圈系统下游的第二距离（e）的不期望的影响。第一和第二抵消装置（26,27）彼此不同，因此第一和第二距离（d，e）同样是不同的。

2. 发明申请

WO2013007646A2 METAL DETECTOR FOR PRODUCTION AND PACKAGING LINES 审中-公开
标题翻译：生产和包装线的金属探测器
公开(公告)号：WO2013007646A2
公开(公告)日：2013-01-17
申请号：PCT/EP2012/063283
申请日：2012-07-06
申请人： METTLER-TOLEDO SAFELINE LTD. , BUTTERWORTH, Daren
发明人： BUTTERWORTH, Daren
IPC分类号： G01V3/10 , G01R33/025
CPC分类号： G01N27/00 , G01R33/025 , G01V3/10
摘要： A metal detector (20) has a metallic enclosure (21) with an entrance aperture (30) and an exit aperture (31). Arranged inside the enclosure (21) is a coil system with a transmitter coil and a first and a second receiver coil bounding a detection zone (28) which extends between the entrance and exit apertures (30, 31) and through which objects under inspection (2) travel. Relative to the travel direction (13), the first and second receiver coils are arranged on opposite sides of the transmitter coil. The first and second receiver coils are connected in series with each other, but their windings are wired with the opposite sense of rotation relative to each other. When the transmitter coil is energized by an alternating electric current, a metal contamination in an object under inspection (2) generates a detection signal in the otherwise balanced receiver coils. To cancel an undesirable sensitivity to metallic objects outside of the detection zone (28), the metal detector (20) has a first cancelling means (26) arranged at the entrance aperture (30) to cancel the undesirable influence of metallic objects beyond a first distance (d) upstream of the coil system and/or a second cancelling means (27) arranged at the exit aperture (31) to cancel the undesirable influence beyond a second distance (e) downstream of the coil system. The first and second cancelling means (26, 27) are different from each other and, consequently, the first and second distances (d, e) are likewise different from each other.
摘要翻译：金属探测器（20）具有带有入口孔（30）和出口孔（31）的金属外壳（21）。在外壳（21）内部布置有线圈系统，该线圈系统具有发射器线圈以及界定检测区域（28）的第一和第二接收器线圈，所述检测区域在入口孔和出口孔（30,31）之间延伸并且被检查物体（ 2）旅行。相对于行进方向（13），第一和第二接收器线圈被布置在发送器线圈的相对侧上。第一和第二接收器线圈彼此串联连接，但是它们的绕组以相对于彼此的相反旋转方向布线。当发射线圈通过交流电流通电时，被检查物体（2）中的金属污染物会在另外平衡的接收线圈中产生检测信号。为了消除对检测区（28）外部的金属物体的不良敏感性，金属检测器（20）具有布置在入口孔（30）处的第一消除装置（26），以消除金属物体超出第一距线圈系统上游的距离（d）和/或布置在出口孔径（31）处的第二消除装置（27），以消除线圈系统下游超过第二距离（e）的不良影响。第一和第二消除装置（26,27）彼此不同，因此第一和第二距离（d，e）同样彼此不同。

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