Permeameter having a differential transformer probe with a reduced
distance between the detecting coils
    1.
    发明授权
    Permeameter having a differential transformer probe with a reduced distance between the detecting coils 失效
    具有差分变压器探头的通孔具有检测线圈之间的距离减小

    公开(公告)号:US5103173A

    公开(公告)日:1992-04-07

    申请号:US663661

    申请日:1991-03-04

    IPC分类号: G01R33/16 G01N27/72 G01R33/12

    CPC分类号: G01N27/72 G01R33/1223

    摘要: Permeameter suited for measuring permeability of a small, non-magnetic (i.e., the permeability value is close to 1) object. The probe of the permeameter is of the differential transformer type with an exciting coil and two detecting coils placed at both ends of the exciting coil. The difference in the outputs of the detecting coils is analyzed and the effect of the eddy current is effectively eliminated, whereby the signal representing the permeability of the object is extracted from the difference signal by the phase shift analysis. By reducing the distance between the two detecting coils, the influence of the disturbance of the eddy current at the boundary of the object sample is minimized and the permeameter can measure a small object sample without sacrificing accuracy and sensitivity.

    摘要翻译: 适用于测量小,非磁性(即磁导率值接近1)物体的磁导率的透度计。 渗透仪的探头是具有励磁线圈的差动变压器型,放置在励磁线圈的两端的两个检测线圈。 分析检测线圈输出的差异,有效地消除涡电流的影响,通过相移分析从差分信号中提取表示物体的磁导率的信号。 通过减小两个检测线圈之间的距离,使目标样品边界处的涡流干扰的影响最小化,并且渗透仪可以在不牺牲精度和灵敏度的情况下测量小物体样品。

    MAGNETIC SENSOR
    2.
    发明申请
    MAGNETIC SENSOR 有权
    磁传感器

    公开(公告)号:US20060038561A1

    公开(公告)日:2006-02-23

    申请号:US10522753

    申请日:2004-08-18

    IPC分类号: G01R33/04

    摘要: A magnetic sensor includes a magnetic sensitive member 11 including an amorphous wire, a detection coil 12 wound around the magnetic sensitive member 11, and a sample-and-hold circuit for detecting a voltage induced in the amorphous wire 11 when a pulse current is interrupted. The sample-and-hold circuit has a sample-and-hold unit B31 and a delay circuit. The sample-and-hold unit B31 includes an electronic switch S31, a capacitor C32, a resistor R32, a resistor R33, and a high-input amplifier A31. The delay circuit includes a resistor R31 connected to a control terminal of the electronic switch S31 and a capacitor C31.

    摘要翻译: 磁传感器包括:包含非晶线的感磁元件11,缠绕在感磁元件11上的检测线圈12;以及当脉冲电流中断时检测非晶线11感应电压的采样保持电路 。 采样保持电路具有采样保持单元B31和延迟电路。 采样保持单元B31包括电子开关S31,电容器C32,电阻器R32,电阻器R33和高输入放大器A 31.延迟电路包括电阻器R 31,其连接到 电子开关S31的控制端子和电容器C31。

    Magnetic field detection device
    3.
    发明授权
    Magnetic field detection device 失效
    磁场检测装置

    公开(公告)号:US06909368B2

    公开(公告)日:2005-06-21

    申请号:US10273129

    申请日:2002-10-18

    CPC分类号: G01R33/02

    摘要: The present invention is a magnetic field detection device that makes use of a frequency characteristic affording circuit in order to selectively detect magnetic signals from a frequency domain accurately at a high level of sensitivity. The present invention has a magneto-impedance element, a detector coil and a negative feedback coil which is wound around the magneto-impedance element, and a frequency characteristic affording circuit which affords a frequency characteristics on the negative feedback signal of a negative feedback connecting an output terminal thereof with the negative feedback coil. Using filters as the frequency characteristic affording circuit, the following are possible uses of this magnetic field detection device: a geomagnet detection device for earthquake prediction (using a high-pass filter), a bill validation apparatus for vending machines, etc. (using a low-pass filter), and a magnetic oscillation detection device for a magnetic gate system (using a band-reject filter).

    摘要翻译: 本发明是利用频率特性提供电路的磁场检测装置,以便以高灵敏度精确地选择性地从频域检测磁信号。 本发明具有缠绕在磁阻元件上的磁阻抗元件,检测线圈和负反馈线圈,以及频率特性提供电路,其在负反馈信号上提供负反馈的频率特性, 输出端与负反馈线圈连接。 使用滤波器作为频率特性提供电路,以下是该磁场检测装置的可能用途:用于地震预测的地磁检测装置(使用高通滤波器),用于自动售货机的纸币确认装置等(使用 低通滤波器)和用于磁栅系统的磁振荡检测装置(使用带阻滤波器)。

    Magnetic sensor
    4.
    发明授权
    Magnetic sensor 有权
    磁传感器

    公开(公告)号:US07026812B2

    公开(公告)日:2006-04-11

    申请号:US10522753

    申请日:2004-08-18

    IPC分类号: G01R33/00 G01R33/02

    摘要: A magnetic sensor includes a magnetic sensitive member 11 including an amorphous wire, a detection coil 12 wound around the magnetic sensitive member 11, and a sample-and-hold circuit for detecting a voltage induced in the amorphous wire 11 when a pulse current is interrupted. The sample-and-hold circuit has a sample-and-hold unit B31 and a delay circuit. The sample-and-hold unit B31 includes an electronic switch S31, a capacitor C32, a resistor R32, a resistor R33, and a high-input amplifier A31. The delay circuit includes a resistor R31 connected to a control terminal of the electronic switch S31 and a capacitor C31.

    摘要翻译: 磁传感器包括:包含非晶线的感磁元件11,缠绕在感磁元件11上的检测线圈12;以及当脉冲电流中断时检测非晶线11感应电压的采样保持电路 。 采样保持电路具有采样保持单元B31和延迟电路。 采样保持单元B31包括电子开关S31,电容器C32,电阻器R32,电阻器R33和高输入放大器A31。 延迟电路包括连接到电子开关S31的控制端子的电阻器R31和电容器C31。

    Dental attachment
    5.
    发明授权
    Dental attachment 失效
    牙齿贴附

    公开(公告)号:US5931676A

    公开(公告)日:1999-08-03

    申请号:US702491

    申请日:1996-08-27

    IPC分类号: A61C8/00 A61C13/235

    CPC分类号: A61C8/0081 A61C13/235

    摘要: A dental magnetic attachment, which is embedded in the denture base so as to face a soft magnetic keeper 103 and attract the keeper by magnetic force, comprising at least three yokes which are plates and made of soft magnetic material, and at least two pieces of magnet which have the magnetization direction parallel to the thickness. In the example the attachment comprises a central yoke 10, the magnet 1, the magnet 2, the outer yoke 11, and the outer yoke 12. The invention is characterized by a magnet arrangement in which like poles of the magnet 1 and the magnet 2 faces each other. Because of it mutually independent two magnetic circuits are formed and they offer strong attractive force which is two times larger than that of existing ones in a compact volume required for dental attachment. Furthermore, corrosion resistance and wear resistance are improved by covering the attracting face of the magnet 1, 2 with spacers made of non-magnetic material and covering the whole attachment with the cap made of non-magnetic material except the attracting face of the attachment.

    摘要翻译: PCT No.PCT / JP95 / 02685第 371日期1997年12月12日 102(e)日期1997年12月12日PCT 1995年12月26日PCT PCT。 第WO96 / 19951号公报 日期1996年7月4日牙科磁性附件嵌入义齿底座以面对软磁性保持器103并通过磁力吸引保持器,其包括至少三个由软磁性材料制成的磁轭, 至少两片具有磁化方向平行于厚度的磁体。 在该示例中,附件包括中心磁轭10,磁体1,磁体2,外磁轭11和外磁轭12.本发明的特征在于磁体装置,其中磁体1和磁体2的相同磁极 面对面 由于它相互独立,形成了两个磁路,并且它们具有强的吸引力,这是在牙齿附着所需的紧凑体积中比现有的两倍大的吸引力。 此外,通过用由非磁性材料制成的间隔物覆盖磁体1,2的吸附面,并且除了附件的吸附面以外的非磁性材料制成的盖子覆盖整个附件,提高了耐腐蚀性和耐磨性。

    Dental magnetic attachment
    6.
    发明授权
    Dental magnetic attachment 失效
    牙科磁性附件

    公开(公告)号:US5678998A

    公开(公告)日:1997-10-21

    申请号:US530860

    申请日:1995-09-20

    IPC分类号: A61C8/00 A61C13/235

    CPC分类号: A61C13/235

    摘要: A dental magnetic attachment embedded in the denture base so as to face a soft magnetic keeper embedded in the top of the root surface comprising a magnet body with a magnet cover sandwiched by a pair of yoke plates and have its magnetic pole to face the yoke plates, the magnet cover made of corrosion resistant non-magnetic material covering lateral face of the magnet body, the pair of yoke plates made of corrosion resistant soft magnetic material, the keeper made of corrosion resistant soft magnetic material, in condition that the yoke plates and the magnet cover are welded together.

    摘要翻译: 嵌入在假牙基部中的牙科磁性附件,以面对嵌入根表面顶部的软磁保持器,包括磁体,磁体盖被一对轭板夹住,并且其磁极面对轭板 ,由覆盖磁体侧面的耐腐蚀非磁性材料制成的磁体盖,由防腐软磁材料制成的一对轭板,由耐腐蚀软磁材料制成的保持器,条件是轭板和 磁体盖焊接在一起。

    Magnetic apparatus for detecting position of vehicle
    7.
    发明授权
    Magnetic apparatus for detecting position of vehicle 失效
    用于检测车辆位置的磁性装置

    公开(公告)号:US06336064B1

    公开(公告)日:2002-01-01

    申请号:US09508675

    申请日:2000-03-28

    IPC分类号: G06F1550

    摘要: A magnetic apparatus for detecting a position of a vehicle, capable of detecting a lateral deviating distance of a vehicle over a lateral deviation width with a high accuracy and at a high speed, wherein a magnetic field component in the direction of advance of the vehicle is detected; or more preferably a three dimensional magnetic sensor (1), which comprises a magnetic sensor element for the direction of advance of the vehicle, and magnetic sensor elements for two directions crossing the first-mentioned direction and provided additionally, is used, whereby it becomes possible to heighten a center retaining capability of the vehicle, widen a lateral deviating distance detecting range around four times from around 25 cm to around 1 m, and detect a magnetic marker (3) reliably even when disturbance magnetic field exerts influence upon this detection operation to thereby start center side guidance reliably.

    摘要翻译: 一种用于检测车辆位置的磁性装置,其能够以高精度和高速度检测车辆横向偏差宽度的横向偏离距离,其中车辆前进方向上的磁场分量为 检测到 或更优选三维磁传感器(1),其包括用于车辆前进方向的磁传感器元件和用于另外提供与前述方向交叉的两个方向的磁传感器元件,由此成为 可能提高车辆的中心保持能力,将距离大约25cm到大约1m左右的横向偏离距离检测范围扩大四倍,即使当干扰磁场对该检测操作产生影响时,也可以可靠地检测磁性标记(3) 从而可靠地启动中心侧引导。

    Soft magnetic Cr-Al steel
    8.
    发明授权
    Soft magnetic Cr-Al steel 失效
    软磁性Cr-Al钢

    公开(公告)号:US4957699A

    公开(公告)日:1990-09-18

    申请号:US217001

    申请日:1989-04-28

    IPC分类号: C22C38/00 C22C38/18 C22C38/28

    CPC分类号: C22C38/18

    摘要: The present invention relates to a soft magnetic steel improved in electric resistance, coercive force, magnetic flux density, magnetic response, cold forgeability, machinability, and corrosion resistance, which is characterized by the composition containing by weight, 0.015% or lower C+N, 0.20% or lower Si, 0.20% or lower Mn, 7 to 13% Cr, 2 to 5% Al, and balance of Fe with impurities, which is applicable to core materials of electronic fuel injection systems, solenoid valves, electromagnetic sensors, etc.

    摘要翻译: PCT No.PCT / JP88 / 00084 Sec。 371日期1989年4月28日第 102(e)日期1989年4月28日PCT提交1988年1月29日PCT公布。 第WO89 / 00210号公报 日本1991年1月12日。本发明涉及电阻,矫顽力,磁通密度,磁响应,冷锻,可加工性,耐腐蚀性等改善的软磁钢,其特征在于, 0.015%以下的C + N,0.20%以下的Si,0.20%以下的Mn,7〜13%的Cr,2〜5%的Al,余量的Fe与杂质,适用于电子燃料喷射系统的核心材料 ,电磁阀,电磁传感器等

    GEOMAGNETIC APPLICATION DEVICE
    9.
    发明申请
    GEOMAGNETIC APPLICATION DEVICE 有权
    地磁应用装置

    公开(公告)号:US20130307547A1

    公开(公告)日:2013-11-21

    申请号:US13983308

    申请日:2012-01-30

    IPC分类号: G01V3/40

    摘要: A geomagnetic application device including a triaxial magnetic sensor, a measurement point acquiring mechanism, a calibration mechanism calibrating offset of the magnetic sensor, and an azimuth calculator. The calibration mechanism includes an offset calculation measurement point selector selecting at least six measurement points of the geomagnetic vectors from among a data set stored in the measurement point storage unit by the measurement point acquiring mechanism and storing the selected measurement points in an offset calculation measurement point storage unit. The offset calculation measurement point selector selects the measurement points from among the data set stored in the measurement point storage unit to include at least six points, component values of which are maximum or minimum in each of three orthogonal axes.

    摘要翻译: 包括三轴磁传感器,测量点获取机构,校准磁传感器的偏移的校准机构和方位计算器的地磁施加装置。 校准机构包括:偏移计算测量点选择器,通过测量点获取机构从存储在测量点存储单元中的数据集中选择至少六个测量点的地磁矢量,并将所选择的测量点存储在偏移计算测量点 存储单元。 偏移计算测量点选择器从存储在测量点存储单元中的数据集中选择测量点,以包括在三个正交轴中的每个中的至少六个点,其分量值最大或最小。

    ANISOTROPIC RARE EARTH MAGNET AND METHOD FOR PRODUCING THE SAME
    10.
    发明申请
    ANISOTROPIC RARE EARTH MAGNET AND METHOD FOR PRODUCING THE SAME 审中-公开
    各向异性稀土磁体及其制造方法

    公开(公告)号:US20120299675A1

    公开(公告)日:2012-11-29

    申请号:US13514942

    申请日:2010-08-27

    摘要: A method for producing an anisotropic rare earth magnet according to the present invention comprises a forming step of obtaining a formed body by press-forming a mixed raw material of a magnet raw material capable of generating R2TM14B1-type crystals of a tetragonal compound of a rare earth element (R), boron (B), and a transition element (TM), and a diffusion raw material to serve as a supply source of at least a rare earth element (R′) and Cu; and a diffusing step of diffusing at least R′ and Cu onto surfaces or into crystal grain boundaries of the R2TM14B1-type crystals by heating the formed body. In this production method, the diffusion raw material having a low melting point and high wettability envelops the R2TM14B1-type crystals, and therefore an anisotropic rare earth magnet having high coercivity can be obtained without decreasing magnetization which should be inherently exhibited by the magnet raw material.

    摘要翻译: 根据本发明的各向异性稀土磁体的制造方法包括以下形成步骤:通过压制成型能够产生稀有的四方晶格化合物的R2TM14B1型晶体的磁铁原料的混合原料来获得成形体 土壤元素(R),硼(B)和过渡元素(TM),以及用作至少稀土元素(R')和Cu的供给源的扩散原料; 以及通过加热成形体将至少R'和Cu扩散至R2TM14B1型晶体的表面或晶界的扩散步骤。 在该制造方法中,具有低熔点和高润湿性的扩散原料包围R2TM14B1型晶体,因此可以获得具有高矫顽力的各向异性稀土磁体,而不会降低磁体原料固有地显示的磁化强度 。