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公开(公告)号：EP0287949B1
公开(公告)日：1992-02-19
申请号：EP88105943.0
申请日：1988-04-14
IPC分类号： G01D5/20
CPC分类号： H02K29/12 , G01D5/2053
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2.发明公开Printed circuit windings for screened inductance sensors, especially sensors for level measurement 失效用于筛选电感式传感器的打印电路绕组，用于电平测量的特殊传感器
公开(公告)号：EP0295609A3
公开(公告)日：1991-01-09
申请号：EP88109385.0
申请日：1988-06-13
CPC分类号： H01L27/01 , G01D5/20 , G01F23/36 , H01F41/045 , H01F2017/0053 , H05K1/165 , H05K3/0002 , H05K2203/056 , Y10S73/05
摘要： In a method of producing a printed circuit winding for a screened inductance sensor, a winding shape for a two-pole planar linear geometry is first of all computed. The shape of this winding is selected to provide an output in accordance with a specified transfer function for the sensor. The computed planar linear winding shape is then transformed to, typically, polar coordinates to provide a winding shape suitable for a rotary planar geometry. The method is carried out using a computer and the transformed winding shape is output to provide the printed circuit artwork. The method is especially suited to producing printed circuit windings for screened inductance level gauges, especially level gauges for fuel tanks where a physical barrier is interposed between the movable screen and the windings of the transducer. The method may also be applied to the design of concentric turn windings providing a similar output to that from an equivalent distributed winding in which the turns are displaced in the direction of relative screen and sense winding movement.
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公开(公告)号：EP0182085B1
公开(公告)日：1992-04-22
申请号：EP85112999.9
申请日：1985-10-14
CPC分类号： G01P3/42 , G01D5/2053
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公开(公告)号：EP0247000B1
公开(公告)日：1990-12-05
申请号：EP87730055.8
申请日：1987-05-13
IPC分类号： G01D5/22
CPC分类号： G01D11/245 , G01D5/2225
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公开(公告)号：EP0289033A2
公开(公告)日：1988-11-02
申请号：EP88106876.1
申请日：1988-04-29
CPC分类号： G01D5/2053
摘要： In a screened inductance sensor system having a drive winding (18) energisable to set up an alternating magnetic drive field, a sense winding (20) links the drive field and a screening element (13) modulates the spatial distribution of the drive field, when in the vicinity of the sense winding (20). Variations in voltage induced in the sense winding (20) provide an indication of the relative position of the screening element (13) and the sense winding (20). The drive winding (18) and the sense winding (20) are accommodated in a displaceable portion (15) of the sensor, and the screening element (13) is fixedly located relative to the movable sensor portion (15). Modulation of the spatial distribution of the drive field occurs when the displaceable sensor portion (15) is moved into the vicinity of the screening element (13). In application of the system to control of vehicles (12) following a predetermined path, fixed screening elements (13) may be located at spaced apart intervals along the path, where the vehicles (12) are on tracks, to provide locational signals according as the vehicles (12) pass these fixed screens. The system may also be applied to providing guidance and position information for a steerable vehicle, in which case two sense windings are used, one responsive to sidewise deviation from the intended path of travel, and the other sense winding providing a cycled output signal, which is counted to yield a measure of distance travelled.
摘要翻译： 在具有能够设置交变磁驱动场的驱动绕组（18）的屏蔽电感传感器系统中，感测绕组（20）链接驱动场和屏蔽元件（13）来调制驱动场的空间分布，当 在感应绕组（20）附近。 在感测绕组（20）中感应的电压的变化提供了屏蔽元件（13）和感测绕组（20）的相对位置的指示。 驱动绕组（18）和感测绕组（20）容纳在传感器的可移动部分（15）中，并且屏蔽元件（13）相对于可移动传感器部分（15）固定地定位。 当可移动传感器部分（15）移动到屏蔽元件（13）附近时，驱动场的空间分布的调制发生。 在应用系统来控制遵循预定路径的车辆（12）之后，固定屏蔽元件（13）可以沿着道路以间隔开的间隔设置，其中车辆（12）位于轨道上，以根据如下方式提供位置信号： 车辆（12）通过这些固定屏幕。 该系统还可以应用于为可转向车辆提供引导和位置信息，在这种情况下，使用两个感测绕组，一个响应于与预期行进路径的侧向偏差，另一个检测绕组提供循环输出信号， 被计算得出行进距离的度量。
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公开(公告)号：EP0182085A2
公开(公告)日：1986-05-28
申请号：EP85112999.9
申请日：1985-10-14
CPC分类号： G01P3/42 , G01D5/2053
摘要： In a sensor having a drive winding (121) for establishing a forward field, an electrically conductive screen (123) is displaceable relative to a sense winding (122). In the presence of the drive field, eddy currents are generated in the screen to establish a counter-field opposing the forward field, so that the sense winding is shaded by the screen to a varying extent during relative displacement of screen and sense winding and the voltage induced in the sense winding is accordingly correspondingly varied. Application of a high frequency input to the drive winding (121) results in a modulated output from the sense winding (122) which may be demodulated to provide a signal indicative of screen position relative to sense winding. The position signal may be further processed to provide a speed signal. The sensor may assume a multiplicity of linear or planar, rotational and axial or solenoidal configurations.
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公开(公告)号：EP0178615A2
公开(公告)日：1986-04-23
申请号：EP85112998.1
申请日：1985-10-14
CPC分类号： H02P25/0925 , H02P25/092
摘要： In a power supply system, an inductance L is connected between a rail at a voltage V, and a rail at earth through a switch S. When the switch is opened, a current i 1 flowing from the inductance L is directed to a third rail through a diode D, voltage on the third rail rising to V 1 . The system may function as a dc to dc converter with an output voltage between the V 1 rail and the V 2 rail equal to V 2 -V 1 . The system may alternatively be used in, for example, a reluctance motor drive, in which case a further inductance with associated switch and diode is included in the circuit in inverse configuration to prevent excessive voltage rise on the third rail.
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公开(公告)号：EP0180815B2
公开(公告)日：1994-12-28
申请号：EP85112996.5
申请日：1985-10-14
CPC分类号： H02K19/103 , H02K19/24 , H02K29/06 , H02P25/08
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公开(公告)号：EP0180815B1
公开(公告)日：1990-07-25
申请号：EP85112996.5
申请日：1985-10-14
CPC分类号： H02K19/103 , H02K19/24 , H02K29/06 , H02P25/08
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