Spring member for acceleration sensor, acceleration sensor and magnetic disk drive apparatus
    2.
    发明公开
    Spring member for acceleration sensor, acceleration sensor and magnetic disk drive apparatus 有权
    为加速度计,加速度计和磁盘驱动单元的弹簧元件

    公开(公告)号:EP1790986A3

    公开(公告)日:2010-01-06

    申请号:EP06124691.4

    申请日:2006-11-23

    申请人: TDK Corporation

    发明人: Shoji, Shigeru

    摘要: A spring member (21) used in an acceleration sensor, for supporting weight members (22a-22d) that cooperate as magnetic field generation members or magnetic field detection sensors includes at least one strip-shaped plate spring (21b,21c) with a fulcrum and support sections (21d-21g) separated from the fulcrum for supporting the weight members (22a-22d). The at least one strip-shaped plate spring (21b,21c) is configured to produce a bending stress in response to an external force applied so as to displace the weight members (22a-22d).

    Magnetic temperature sensor device, manufacturing process and detection process therefrom
    3.
    发明公开
    Magnetic temperature sensor device, manufacturing process and detection process therefrom 有权
    磁性温度传感器装置,制造工艺及其检测工艺

    公开(公告)号:EP1722207A3

    公开(公告)日:2006-11-29

    申请号:EP06118447.9

    申请日:2004-09-29

    IPC分类号: G01K13/08

    CPC分类号: B60C23/0408 G01P15/105

    摘要: A sensor device (120) consisting of a temperature sensor deposited onto a spin valve device (10) comprising a plurality of layers arranged as a stack with a layer with low Curie temperature (122) at least 2 spacer layers (121,123) and a permanent magnetic layer (124). The low Curie temperature layer (122) loses its magnetisation when temperature drops below the Curie temperature which leads to an increase of electric resistance in the spin valve device (10).

    摘要翻译: 一种由沉积在自旋阀装置(10)上的温度传感器组成的传感器装置(120),所述传感器装置包括多个层,所述多个层与具有低居里温度的层(122)布置成至少2个间隔层(121,123) 磁层(124)。 当温度下降到居里温度以下时,低居里温度层(122)失去其磁化,这导致自旋阀装置(10)中的电阻增加。

    Accelerometer with compensation of external magnetic fields
    4.
    发明公开
    Accelerometer with compensation of external magnetic fields 审中-公开
    加速度计与外部磁场补偿

    公开(公告)号:EP1591792A3

    公开(公告)日:2006-05-24

    申请号:EP05009085.1

    申请日:2005-04-26

    摘要: An accelerometer for measuring the displacement of a magnet body using magnetic detecting elements is provided, the accelerometer having superior measurement accuracy by suppressing influence of an external magnetic field such as the earth magnetic field. The accelerometer has detecting units each having a cantilever which is elastically deformed so as to rotate around a fixed end thereof, a magnet body provided at a free end of the cantilever, and a magnetic detecting head portion disposed outside the rotation region of the cantilever. In order to correct detection signals output from the magnetic detecting head portions, the accelerometer has peripheral magnetic field detecting portions for measuring an external magnetic field acting on the magnetic detecting head portions and the magnet body for correcting a detection signal output from the magnetic detecting head portion. The correction includes a correction of the cantilever movement in response to the external magnetic field. The beam may be formed of a Ni-P alloy, and its support may extend parallel to the beam, to protect the beam.

    Calibration of an Accelerometer
    5.
    发明公开
    Calibration of an Accelerometer 审中-公开
    Kalibrierung eines Beschleunigungsaufnehmers

    公开(公告)号:EP1640728A1

    公开(公告)日:2006-03-29

    申请号:EP05255835.0

    申请日:2005-09-21

    摘要: A method of calibrating an acceleration sensor includes suspending an inertial body using a magnetic fluid; generating a magnetic field within the magnetic fluid; modulating the magnetic field to cause a displacement of the inertial body; measuring a response of the inertial body to the modulation; and calibrating the acceleration sensor in real time based on the measurement. Current can be driven through a plurality of magnets for generating the magnetic field so as to create the modulation. Sensing coils can be used for detecting the response of the inertial body. The modulation can be periodic, an impulse or some other aperiodic function.

    摘要翻译: 校准加速度传感器的方法包括使用磁性流体悬挂惯性体; 在磁流体内产生磁场; 调制磁场引起惯性体的位移; 测量惯性体对调制的响应; 并基于测量实时校准加速度传感器。 可以通过用于产生磁场的多个磁体驱动电流,以便产生调制。 感应线圈可用于检测惯性体的响应。 调制可以是周期性的,脉冲或其他非周期性的功能。

    Sensor device
    8.
    发明公开
    Sensor device 失效
    传感器布置

    公开(公告)号:EP0793102A3

    公开(公告)日:1998-12-16

    申请号:EP97300874

    申请日:1997-02-11

    CPC分类号: G01P15/11 G01P15/105

    摘要: A sensor device comprises a beam anchored at both ends to a mounting frame (31, 37) and composed of an amorphous material exhibiting a magnetostrictive effect. The beam has disposed at an intermediate point along its length a seismic mass (29), which may be magnetic or non-magnetic, and a magnetising coil (34) for imposing an alternating carrier flux upon the beam and a sensing coil (35) for sensing changes in magnetic field associated with the beam due to accelerations of an object to which the mounting frame is attached. The sensing coil may be in two sections (35a, 35b), one each side of the seismic mass, for the suppression of a transverse sensing effect. The invention also provides for the realisation of a strain-sensing device, the seismic mass being then dispensed with.

    BESCHLEUNIGUNGSSENSOR
    9.
    发明授权

    公开(公告)号:EP0507902B1

    公开(公告)日:1995-05-03

    申请号:EP91917610.7

    申请日:1991-10-05

    申请人: ROBERT BOSCH GMBH

    IPC分类号: G01P15/08

    CPC分类号: G01P15/105 Y10S73/03

    摘要: In the acceleration sensor (11) proposed, the measurement unit (16), comprising a flexural spring (17) and two permanent magnets (20, 21), is fitted in a recess (15) in a stop plate (13). The stop plate (13) is attached to the connector housing (12). Located on the upper surface of the stop plate (13) is a hybrid circuit (25), while the baseplate (36) for the housing (10) rests against the lower surface of the stop plate (13). The permanent magnets (20, 21) act both as seismic masses and also, in conjunction with the baseplate (36), as damping elements. The acceleration sensor (11) is particularly compact and simple in design and meets the requirements for a failsafe sensor.

    摘要翻译: 在所提出的加速度传感器(11)中,包括弯曲弹簧(17)和两个永磁体(20,21)的测量单元(16)装配在止动板(13)中的凹部(15)中。 止动板(13)连接到连接器壳体(12)。 位于止动板(13)的上表面上的是混合电路(25),而用于壳体(10)的底板(36)靠在止动板(13)的下表面上。 永磁体(20,21)既作为震动质量体也作为阻尼元件与底板(36)一起起作用。 加速度传感器(11)的设计特别紧凑和简单,并且满足故障安全传感器的要求。

    Force detector and acceleration detector and method of manufacturing the same
    10.
    发明公开
    Force detector and acceleration detector and method of manufacturing the same 失效
    Kraftdetektor und Beschleunigungsdetektor und Verfahren zu seiner Herstellung。

    公开(公告)号:EP0480471A2

    公开(公告)日:1992-04-15

    申请号:EP91117418.3

    申请日:1991-10-11

    申请人: OKADA, Kazuhiro

    发明人: OKADA, Kazuhiro

    摘要: An electrode layer (E1) is formed on the upper surface of a first substrate (100), and a processing for partially removing the substrate is carried out in order to allow the substrate to have flexibility. To the lower surface of the first substrate, a second substrate (200) is connected. Then, by cutting the second substrate, a working body (210) and a pedestal (220) are formed. On the other hand, a groove (401) is formed on a third substrate (400). An electrode layer (E2) is formed on the bottom surface of the groove. The third substrate is connected to the first substrate so that both the electrodes (E1, E2) face to each other with a predetermined spacing therebetween. Finally, the first, second and third substrates are cut off every respective unit regions to form independent sensors, respectively. When an acceleration is exerted on the working body (210), the first substrate (100) bends. As a result, the distance between both the electrodes (E1, E2) changes. Thus, an acceleration exerted is detected by changes in an electrostatic capacitance between both the electrodes.

    摘要翻译: 在第一基板(100)的上表面上形成电极层(E1),并进行部分去除基板的处理,以使基板具有柔性。 向第一基板的下表面连接第二基板(200)。 然后,通过切割第二基板,形成工作体(210)和基座(220)。 另一方面,在第三基板(400)上形成有凹槽(401)。 在槽的底面上形成电极层(E2)。 第三基板连接到第一基板,使得两个电极(E1,E2)之间以预定的间隔彼此面对。 最后,第一,第二和第三基板分别切断每个单元区域以分别形成独立的传感器。 当对工作体(210)施加加速度时,第一基板(100)弯曲。 结果,两个电极(E1,E2)之间的距离发生变化。 因此,通过两个电极之间的静电电容的变化来检测施加的加速度。