公开(公告)号：EP1497620A2

公开(公告)日：2005-01-19

申请号：EP03727370.3

申请日：2003-04-23

申请人： Fast Technology AG

发明人： MAY, Lutz, Axel ,  CUNTZE, Georg

IPC分类号： G01D5/22 ,  G01D5/20

CPC分类号： G01D5/14

摘要： A transducer for measuring a displacement along an axis of movement of a first part relative to a second part, comprises a magnetic source for generating a magnetic field mounted to the first part, and a plurality of magnetic field sensing devices mounted to the second part to be movable relative to the magnetic field generated by the magnetic source. The sensing devices are spaced in the direction of the axis. A circuit arrangement is provided to which the sensing devices are connected to generate an output signal dependent on contributions from the sensing devices of the plurality. The magnetic source has North and South poles oriented in the direction of the axis. The sensing devices are each oriented to respond to an axially-directed component of magnetic field, and comprise at least two axially-spaced sensing devices whose contributions to the output signal are combined in a subtractive fashion.

公开(公告)号：EP1483551A1

公开(公告)日：2004-12-08

申请号：EP03706572.9

申请日：2003-02-24

申请人： Fast Technology AG

发明人： MAY, Lutz, Axel

IPC分类号： G01D5/12 ,  G01L3/10 ,  G01B7/00

CPC分类号： G01D5/2046 ,  G01D5/14 ,  G01L3/105

摘要： A method of measuring torque in a part, for example a shaft, (210) in which at least one coil, (212) wound about an axis of the part about which axis torque is applied, is A.C. energised to create an alternating polarity magnetic field in the part, which field emanates a component dependent on torque. A magnetic field sensor arrangement (218) is responsive to the emanated component to produce a torque-indicating signal. The at least one coil is energised (220) by a series of energising pulses of current of alternating polarity which pulses have a relatively small duty cycle. The sensor arrangement produces sensor pulses of alternating polarity corresponding to said energising pulses, and the sensor pulses are measured in a peak-to-peak fashion to produce an output signal representing torque.

公开(公告)号：EP1439035A1

公开(公告)日：2004-07-21

申请号：EP02028056.6

申请日：2002-12-16

申请人： Fast Technology AG ,  Chicago Pneumatics

发明人： May,Lutz ,  Antier,Yves

IPC分类号： B25B23/14 ,  B25F5/00 ,  B25B23/145

CPC分类号： B25B23/1405 ,  B25B13/06 ,  B25B23/14 ,  B25B23/1456 ,  B25F5/00

摘要： The present invention relates to a signal processing and control device for a power torque tool. The signal processing and control device is adapted to be removably engageable with the body of said power torque tool, to be operable to process pulse signals representing pulses of torque being received from a torque sensor adaptor of the power torque tool in order to provide a shut-off signal to the power torque tool dependent on the received pulse signals, and to be powered by the power supply of the power torque tool.

摘要翻译： 本发明涉及一种用于功率转矩工具的信号处理和控制装置。 信号处理和控制装置适于可拆卸地与所述功率转矩工具的主体接合，以可操作以处理表示从功率转矩工具的扭矩传感器适配器接收的扭矩脉冲的脉冲信号，以便提供关闭 取决于接收到的脉冲信号到功率转矩工具，并且由功率转矩工具的电源供电。

公开(公告)号：EP1395801A1

公开(公告)日：2004-03-10

申请号：EP02778885.0

申请日：2002-06-07

申请人： Fast Technology AG

发明人： MAY, Lutz, Axel

IPC分类号： G01L3/14

CPC分类号： G01L3/105 ,  G01L3/104 ,  G01L3/1435

摘要： A torque transducer system comprises a disc (20) through which torque is transmitted in a radial direction and which has a magnetised annular region (26) which emanates a torque-dependent magnetic field. A non-contacting magnetic field sensor (L1) detects the emanated field. The annular region (26) comprises segments (30) by means of which a pulsed magnetic field is emanated as the disc (20) rotates. The segments (30) may be magnetically unipolar and spatially separated or of alternate polarity (Fig 2). They may be integral with the disc (20) of or material applied to the disc (Fig 3) that is magnetised or that segments an underlying magnetisation in the disc. The preferred direction of magnetisation is radial and the effect of the orientation of a sensor (L) with respect to the radial field is discussed. One sensor arrangement comprises a pair of sensors (L1: L2) oriented at an angle to one another with reference to the radial field. The teachings of the invention can be applied to the segmentation of an integral transducer region of a torque-transmitting shaft, the region having an annulus of axially-directed remanent magnetisation.

公开(公告)号：EP1203210B1

公开(公告)日：2004-01-07

申请号：EP00953308.4

申请日：2000-08-14

申请人： Fast Technology AG

发明人： MAY, Lutz Axel

IPC分类号： G01L3/10 ,  G01L1/12 ,  G01L3/14

CPC分类号： G01L3/102 ,  G01L1/125 ,  G01L3/1435

摘要： A magnetic torque tranducer for a structure such as a disc (10) through which torque is transmitted between a central shaft (20) to which the disc is mounted and an outer periphery such as a gear wheel (24). The intervening region through which torque is transmitted is magnetised to provide a transducer element (22) having two magnetised, annular regions (12, 14: 54, 56) which cooperate to emanate a magnetic field (Ms) that is torque-dependent. The two magnetised regions may be longitudinally-magnetised (12, 14) through the disc or circumferentially magnetised (54, 56) with opposite polarities. A sensor assembly of non-contacting sensors (26a-26c) is used to detect the emanated field and connected in circuitry to provide a torque-dependent signal. In an alternative a single magnetised annular region is empLoyed. The annular region or regions need not be a complete annulus. The same disC-like structure can also be used as force sensor for measuring bending moments or other forces which result in stress occurring in the disc.

摘要翻译： 用于诸如盘（10）之类的结构的磁扭矩转换器通过该磁转矩转换器在安装盘的中心轴（20）和诸如齿轮（24）的外周之间传递扭矩。 扭矩传递通过的插入区域被磁化以提供具有两个磁化的环形区域（12,14：54,56）的换能器元件（22），所述区域协作以发出与扭矩相关的磁场（Ms）。 两个磁化区域可以通过磁盘纵向磁化（12,14）或者具有相反极性的圆周磁化（54,56）。 非接触式传感器（26a-26c）的传感器组件被用于检测发出的电场并在电路中连接以提供与转矩有关的信号。 在另一个选择中，强制使用单个磁化环形区域。 环形区域不需要是完整的环形。 也可以使用相同的类碟形结构作为力传感器，用于测量弯曲力矩或导致盘中出现应力的其他力。

公开(公告)号：EP1368626A1

公开(公告)日：2003-12-10

申请号：EP02719862.1

申请日：2002-02-18

申请人： Fast Technology AG

发明人： MAY, Lutz, Axel

IPC分类号： G01L3/10

CPC分类号： G01L3/102

摘要： Compensation is provided for changes in the stored magnetisation of a magnetic-based transducer having a transducer region (12) of permanent magnetisation which emanates a magnetic field that is a function of an applied stress such as torque or a bending force. Magnetic field sensors (MFS1-4) are employed to derive a stress-dependent signal (MFS1,2) and a reference signal (MFS3,4) that is independent of the applied stress. The reference signal is obtained by detecting the emanated field at a point where it is substantially unaffected by torque, preferably by a differential measurement of two sensors (Fig. 4), or at two axially-spaced points at which detection is torque-dependent in a substantially equal manner (Fig. 10b).

公开(公告)号：EP1282811A1

公开(公告)日：2003-02-12

申请号：EP01943403.4

申请日：2001-05-17

申请人： Fast Technology AG

发明人： MAY, Lutz, Axel

IPC分类号： G01L3/14 ,  G01L3/10 ,  G01P3/487

CPC分类号： G01L1/12 ,  G01L3/14 ,  G01L3/1435 ,  G01P3/487

摘要： Torque is measured in the chain wheel (50) of a pedal cycle by a non-contacting magnetic-based transducer. A magnetising source (70), a D.C. type of source such as a permanent magnet is positioned adjacent the chain wheel (50) to induce an arcuate magnetised zone (72) in the wheel (50) as it rotates. The zone emanates a torque-dependent magnetic-field component that is detectable by a sensor (74) that follows the source (70) in the direction of rotation. By having the magnetising source (70) continually in position the arcuate tranducer zone (72) is refreshed on each rotation of the chain wheel. The nature of the pulsating torque in the chain wheel due to the exertion of the rider and its relationship to the angle of the pedal cranks is discussed with a preference for positioning the source (70) and sensor (74) at positions of minimum and maximum exerted torque respectively. If the induced arcuate magnetisation is interrupted (76) pulses for measuring rotational speed are obtainable. The torque measurement is of general application to torque in sprocket wheels or gear wheels.

公开(公告)号：EP1274974A1

公开(公告)日：2003-01-15

申请号：EP01931551.4

申请日：2001-03-28

申请人： Fast Technology AG

发明人： MAY, Lutz, Axel

IPC分类号： G01L1/12 ,  G01L3/10 ,  H01L41/00

CPC分类号： G01M5/0091 ,  G01L1/125 ,  G01L3/102 ,  G01M5/0016 ,  G01M5/0041

摘要： A force transducer element (20) comprises a body (22) of magnetisable material having at least one magnetised region (30) at an angle, say 45°, to the force-sensing direction (P-P). Preferably there are a plurality of parallel magnetised regions of alternating opposite polarity of magnetisation to form closed loops (43p, 43n). The element may be a block having opposite force receiving surfaces (24, 24'). The body (122) may contain plural transducer elements (120a, 120b) angled to one another to resolve force directions. The principle is extended to a circular transducer element (243). The invention may be implemented in a flexible magnetic tape. Another embodiment (300) is realised in a planar structure in which a ferromagnetic core (310) is subject to a magnetic field (326) at an angle to the direction (F) of force application generated by laterally offset coils (312, 314). A sensor device (330) is fabricated in the structure.

公开(公告)号：EP1221055A1

公开(公告)日：2002-07-10

申请号：EP00971326.4

申请日：2000-10-05

申请人： Fast Technology AG

发明人： MAY, Lutz, Axel

IPC分类号： G01P15/08 ,  G01P15/11

CPC分类号： G01P15/18 ,  G01P15/0885 ,  G01P15/105 ,  G01P15/11

摘要： An accelerometer is disclosed which uses magnetic transducer technology. A mass-block (56) is mounted to a reference base (58) by an elongate member (shaft) (51) whereby the mass-block (56) is capable of movement (A) relative to the base (58) in response to accelerations to which it is subjected. The elongate member (51) has at least one magnetised transducer region (51b, 51c), for example circumferentially or longitudinally magnetised, so as to emanate a magnetic field which is a function of the flexure in the member (51) due to acceleration of the mass-block (56) relative to the base (58). A sensor system (52a, 52b) is located adjacent the transducer region (51b, 51c) to detect the emanated field from which an acceleration-representing signal can be derived. In a modification a mass-block (156) is mounted to a central hub portion (152) of a disc (151) which is radially secured (158) and has an intermediate region (154) that flexed in response to acceleration of the mass-block (156). The intermediate region (154) is magnetised (160, 161), e.g. a region of annular magnetisation, to provide the magnetic transducer element. In another embodiment, the mass-block (110) is supported in an aperture (111) of a reference base (112) by cores (114) of inductors. The core permeability is a function of the compressive/tensile forces on the cores due to acceleration of the mass-block (110) relative to the base (112). The resulting acceleration-dependent inductance changes provide signals for deriving an acceleration-representing output.

摘要翻译： 公开了一种使用磁换能器技术的加速度计。 质量块（56）通过细长构件（轴）（51）安装到参考基座（58），由此质量块（56）能够相对于基座（58）移动（A） 加速度。 细长构件（51）具有例如周向或纵向磁化的至少一个磁化的换能器区域（51b，51c），以便发出随着构件（51）中的弯曲而变化的磁场， 质量块（56）相对于基座（58）。 传感器系统（52a，52b）位于换能器区域（51b，51c）附近以检测可从其导出加速度表示信号的发出场。 在一个变型中，质量块（156）被安装到径向固定（158）的盘（151）的中心轮毂部分（152）并且具有响应于质量块的加速而弯曲的中间区域（154） - 区块（156）。 中间区域（154）被磁化（160,161），例如， 环形磁化区域，以提供磁换能器元件。 在另一个实施例中，质量块（110）由电感器芯（114）支撑在参考基座（112）的孔（111）中。 由于质量块（110）相对于基部（112）的加速度，芯部磁导率是芯部上的压缩/拉伸力的函数。 由此产生的与加速度相关的电感变化提供用于导出加速度表示输出的信号。

公开(公告)号：EP1221030A1

公开(公告)日：2002-07-10

申请号：EP00972736.3

申请日：2000-10-10

申请人： Fast Technology AG

发明人： MAY, Lutz, Axel

IPC分类号： G01L3/10

CPC分类号： G01L3/105 ,  G01L3/102

摘要： Torque in a shaft (61) is detected by means of non-contacting sensors (23, 24) sensing a torque-dependent magnetic field emanated by an integral transducer region (64, 32) of the shaft (61) that is circumferentially or longitudinally magnetised. The shaft (61) is driven by a motor (63) and subject to a longitudinal magnetic field (60) which acts on interference field. In one implementation of the invention coils (L1, L2: L3, L4) are energised to provide a counteracting magnetic field to compensate the interference field (60).

摘要翻译： 借助于非接触式传感器（23,24）检测轴（61）中的扭矩，所述非接触式传感器感测由轴（61）的整体换能器区域（64,32）发出的与扭矩相关的磁场，所述整体换能器区域沿周向或纵向 磁化。 轴（61）由马达（63）驱动并经受作用于干涉场的纵向磁场（60）。 在本发明的一个实施方式中，线圈（L1，L2：L3，L4）被激励以提供抵消磁场以补偿干扰场（60）。