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14 条记录 (耗时 0.008 秒)

    Capacitance type detector
    1.
    发明公开
    Capacitance type detector 有权
    Kapazitivgeber

    公开(公告)号：EP1096238A1

    公开(公告)日：2001-05-02

    申请号：EP00115586.0

    申请日：2000-07-19

    申请人： NOHKEN INC.

    发明人： Wakabayashi, Kazuhiro

    IPC分类号： G01F23/26

    CPC分类号： G01F23/266

    摘要： From the time of power on, an output of a variable frequency generating circuit (5) is kept matching with the resonance frequency of a resonance circuit (1). When an object of detection comes into contact or to the vicinity of a detection electrode and the resonance frequency of resonance circuit (1) changes, a phase deviation is generated from the output of the variable frequency generating circuit (5). The deviation is detected by a phase comparing circuit (3), and a control circuit (4) changes a control voltage so that the oscillation frequency of variable frequency generating circuit (5) is changed to attain phase matching. This change is detected by a detection circuit (7), and presence/absence of the object is detected.

    摘要翻译： 从上电开始，可变频率发生电路（5）的输出与谐振电路（1）的谐振频率保持一致。 当检测对象接触到检测电极附近并且谐振电路（1）的谐振频率发生变化时，从可变频率发生电路（5）的输出产生相位偏差。 通过相位比较电路（3）检测偏差，控制电路（4）改变控制电压，使变频产生电路（5）的振荡频率发生变化，达到相位匹配。 通过检测电路（7）检测该变化，检测出有无物体。

    Vibrator-type level sensor
    4.
    发明公开
    Vibrator-type level sensor 失效
    Füllstandsensorvom Schwingungstyp。

    公开(公告)号：EP0499265A2

    公开(公告)日：1992-08-19

    申请号：EP92102494.9

    申请日：1992-02-14

    申请人： NOHKEN INC.

    发明人： Umezawa, Takayuki ,  Kawakita, Takao

    IPC分类号： G01F23/22

    CPC分类号： G01F23/22 ,  G01F23/2967

    摘要： In a vibrator-type level sensor, a detection pipe (14) is provided projecting from a base unit (1) to be mounted to a wall of a container (8) containing a substance (100) to be detected and the detection pipe (14) has an internal vibration plate (12) attached with a vibrating piezo-electric device (16) thereon; the internal vibration plate (12) are mechanically connected through an end cap (13) to the free end of the detection pipe (14, 140), to configure a folded cantilever unit (30).

    摘要翻译： 在振子式液位传感器中，设置从基座单元（1）突出设置的检测管（14），所述基座单元（1）安装到容纳待检测物质（100）的容器（8）的壁上，并且所述检测管 14）在其上安装有振动压电装置（16）的内部振动板（12） 内部振动板（12）通过端盖（13）机械地连接到检测管（14,140）的自由端，以构成折叠的悬臂单元（30）。

    COIL IMPEDANCE DETECTION METHOD AND OBJECT DETECTION METHOD AND APPARATUS USING THE SAME
    5.
    发明公开
    COIL IMPEDANCE DETECTION METHOD AND OBJECT DETECTION METHOD AND APPARATUS USING THE SAME 有权
    线圈阻抗检测方法和对象检测的方法和装置

    公开(公告)号：EP1387152A4

    公开(公告)日：2013-08-28

    申请号：EP02722931

    申请日：2002-05-02

    申请人： NOHKEN INC

    发明人： KAWAKATSU HIROSHI

    IPC分类号： G01F23/22 ,  G01F23/00 ,  G01F23/296 ,  G01V3/10

    CPC分类号： G01V3/101 ,  G01F23/0076 ,  G01F23/0092 ,  G01F23/2967 ,  G01H11/00 ,  G01N11/16

    摘要： A triangular wave generating circuit (21) generates a sweep voltage of a triangular wave, a VCO (22) generates a sweep of a frequency according to the sweep voltage, and a driving coil (4) is driven by the sweep voltage. From the current flowing through the driving coil (4), an interference component is extracted and rectified by a rectifier circuit (27). A peak hold circuit (28) holds a peak value of an interference voltage within a period corresponding to one sweep. The peak value thus held is compared by a comparator circuit (29) with a predetermined value and accordingly, a relay circuit (30) outputs a signal indicative of whether an object is present or not.

    Distance measuring device, distance measuring method and distance measuring program
    7.
    发明公开
    Distance measuring device, distance measuring method and distance measuring program 有权
    Abstandsmessgerät，Abstandsmessverfahren und Abstandsmessprogramm

    公开(公告)号：EP1744176A1

    公开(公告)日：2007-01-17

    申请号：EP06014738.6

    申请日：2006-07-14

    申请人： The University of Tokushima ,  NOHKEN INC.

    发明人： Iritani, Tadamitsu c/o Faculty of Engineering ,  Wakabayashi, Kazuhiro c/o Nohken Inc.

    IPC分类号： G01S13/36

    CPC分类号： G01S13/36 ,  G01S2007/356

    摘要： A transmission unit (20) emits an electromagnetic wave having the same frequency f as an output signal from a sending unit (12) in a direction of a measurement axis (x-axis). A detecting unit (30) performs synchronous detection on a reflected wave (R) detected by a directional coupler (32) by an in-phase signal and a quadrature signal of the transmission signal, and by extracting DC component from the detection signal, detects the in-phase component (I(f)) and quadrature component (Q(f))of the reflected wave (R). An analysis signal generating unit (42) mixes the in-phase component (I(f)) and quadrature component (Q(f)) of the reflected wave (R) and signals (I 0 (f), Q 0 (f)), having periodicity corresponding to a prescribed distance (do), and using only one of the resulting side bands, generates an analysis signal (p(f)). Fourier transform unit (44) finds distance to the object of measurement from a profile (P(x)) obtained by Fourier transform of the analysis signal (p(f)).

    摘要翻译： 发送单元（20）沿着测量轴（x轴）的方向发射具有与来自发送单元（12）的输出信号相同的频率f的电磁波。 检测单元（30）通过同步信号和发送信号的正交信号对由定向耦合器（32）检测的反射波（R）进行同步检测，并且通过从检测信号中提取DC分量来检测 反射波（R）的同相分量（I（f））和正交分量（Q（f））。 分析信号生成单元（42）将反射波（R）的同相分量（I（f））和正交分量（Q（f））和信号（I 0（f），Q 0（f） ），具有对应于规定距离（do）的周期性，并且仅使用所产生的边带中的一个产生分析信号（p（f））。 傅立叶变换单元（44）通过分析信号（p（f））的傅立叶变换获得的轮廓（P（x））找到与测量对象的距离。

    COIL IMPEDANCE DETECTION METHOD AND OBJECT DETECTION METHOD AND APPARATUS USING THE SAME
    8.
    发明公开
    COIL IMPEDANCE DETECTION METHOD AND OBJECT DETECTION METHOD AND APPARATUS USING THE SAME 有权
    ÜUNG UNG UNG UNG UNG UNG UNG UNG UNG UNG UNG UNG UNG UNG UNG UNG UNG UNG UNG

    公开(公告)号：EP1387152A1

    公开(公告)日：2004-02-04

    申请号：EP02722931.9

    申请日：2002-05-02

    申请人： Nohken Inc.

    发明人： KAWAKATSU, Hiroshi

    IPC分类号： G01F23/22

    CPC分类号： G01V3/101 ,  G01F23/0076 ,  G01F23/0092 ,  G01F23/2967 ,  G01H11/00 ,  G01N11/16

    摘要： A triangular wave generating circuit (21) generates a sweep voltage of a triangular wave, a VCO (22) generates a sweep of a frequency according to the sweep voltage, and a driving coil (4) is driven by the sweep voltage. From the current flowing through the driving coil (4), an interference component is extracted and rectified by a rectifier circuit (27). A peak hold circuit (28) holds a peak value of an interference voltage within a period corresponding to one sweep. The peak value thus held is compared by a comparator circuit (29) with a predetermined value and accordingly, a relay circuit (30) outputs a signal indicative of whether an object is present or not.

    摘要翻译： 三角波产生电路（21）产生三角波的扫描电压，VCO（22）根据扫描电压产生频率扫描，驱动线圈（4）由扫描电压驱动。 从流经驱动线圈（4）的电流，通过整流电路（27）提取并整流干扰成分。 峰值保持电路（28）将干扰电压的峰值保持在对应于一次扫描的周期内。 这样保持的峰值由具有预定值的比较器电路（29）进行比较，因此继电器电路（30）输出指示对象是否存在的信号。

    Vibration type level detector
    9.
    发明公开
    Vibration type level detector 有权
    VibrierenderFüllstandsdetektor

    公开(公告)号：EP0949489A1

    公开(公告)日：1999-10-13

    申请号：EP99102162.7

    申请日：1999-02-03

    申请人： NOHKEN INC.

    发明人： Kawakatsu, Hiroshi

    IPC分类号： G01F23/22 ,  G01F23/296

    CPC分类号： G01F23/2966 ,  G01F23/2967

    摘要： A base of a detection pipe is fixed. A vibration piece has its one end fixed to a closing portion and the other end provided with a permanent magnet. An electromagnet is closely attached inside the detection pipe such that it is arranged in a direction of axis of the permanent magnet, thereby forming a folded cantilever. Vibration is detected by a distortion detecting element, and the output therefrom is amplified by an amplification circuit for driving the electromagnet. Thus, the detection pipe, closing portion and vibration piece are repeatedly vibrated.

    摘要翻译： 检测管的底座是固定的。 振动片的一端固定在封闭部分，另一端设有永磁体。 电磁铁紧密地安装在检测管内，使其沿永久磁铁的轴线方向排列，从而形成折叠的悬臂。 由失真检测元件检测振动，其输出由用于驱动电磁体的放大电路放大。 因此，检测管，关闭部和振动片重复地振动。