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公开(公告)号：US06316931B1
公开(公告)日：2001-11-13
申请号：US09484796
申请日：2000-01-18
IPC分类号： G01R3300
摘要： It is an object of the invention to provide a magnetic sensor and a current sensor that exhibit high performance at low costs. A magnetic sensor has a magnetic core (1) having a magnetic saturation property and a sensor coil (2) wound around the magnetic core (1). An end of a detection coil (20) is connected to an end of the sensor coil (2). The other end of the detection coil (20) is grounded. The magnetic sensor further comprises a drive circuit (3) and a detection circuit (4). The drive circuit (3) has a series resonance circuit part of which is made up of the sensor coil (2). To the sensor coil (2) the drive circuit (3) supplies a resonance current flowing into the series resonance circuit as an alternating current that allows the magnetic core (1) to reach a saturation region. The detection circuit (4) detects a magnetic field to be measured by detecting variations in resonance current flowing through the sensor coil (2).
摘要翻译： 本发明的目的是提供一种以低成本呈现高性能的磁传感器和电流传感器。 磁传感器具有磁饱和特性的磁芯（1）和缠绕在磁芯（1）上的传感器线圈（2）。 检测线圈（20）的一端连接到传感器线圈（2）的一端。 检测线圈（20）的另一端接地。 磁传感器还包括驱动电路（3）和检测电路（4）。 驱动电路（3）的串联谐振电路部分由传感器线圈（2）构成。 驱动电路（3）向传感器线圈（2）提供作为允许磁芯（1）达到饱和区域的交流电流流入串联谐振电路的谐振电流。 检测电路（4）通过检测流过传感器线圈（2）的谐振电流的变化来检测要测量的磁场。
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2.发明授权Magnetic sensor apparatus, current sensor apparatus and magnetic sensor element 失效磁传感器装置，电流传感器装置和磁传感元件公开(公告)号：US06323634B1
公开(公告)日：2001-11-27
申请号：US09484793
申请日：2000-01-18
IPC分类号： G01R3300
摘要： A magnetic sensor apparatus comprises a magnetic detector (101) that outputs a signal responsive to a magnetic field and a magnetic substance (110) having a cavity (111) in which the magnetic detector (101) is placed. The magnetic detector (101) is placed in the cavity (111) of the magnetic substance (110). The ratio between a magnetic field (H) to be measured and a magnetic field applied to the magnetic detector (101) is set to a specific value, based on at least one of a first demagnetizing factor depending on the shape of the magnetic substance (110) and a second demagnetizing factor depending on the shape of the cavity (111). The magnetic sensor apparatus further comprises a feedback coil (112) that applies a negative feedback magnetic field to the magnetic detector (101) and a reference magnetic field coil (113) that applies a reference alternating magnetic filed to the magnetic detector (101) for controlling the property of the magnetic detector (101).
摘要翻译： 磁传感器装置包括输出响应于磁场的信号的磁检测器（101）和具有放置磁检测器（101）的空腔（111）的磁性体（110）。 磁检测器（101）放置在磁性物质（110）的空腔（111）中。 基于磁性物质的形状的第一退磁系数中的至少一个，将要测量的磁场（H）和施加到磁性检测器（101）的磁场之间的比率设定为特定值（ 110）和取决于空腔（111）的形状的第二去磁因子。 磁传感器装置还包括向磁检测器（101）施加负反馈磁场的反馈线圈（112）和将参考交变磁场施加到磁检测器（101）的参考磁场线圈（113），用于 控制磁检测器（101）的性质。
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公开(公告)号：US06411078B1
公开(公告)日：2002-06-25
申请号：US09487802
申请日：2000-01-20
IPC分类号： G01R3300
CPC分类号： G01R15/20 , G01R15/183
摘要： It is an object of the invention to provide a current sensor apparatus that reduces measurement errors resulting from variations in a position of a current path passing through the space inside a magnetic yoke. The current sensor apparatus comprises a ring-shaped magnetic yoke (2) surrounding a current path (1), part of the yoke having a gap (3), and a magnetic sensor element (4) placed in the gap (3) of the magnetic yoke (2). The magnetic sensor element (4) detects a magnetic field in the gap (3) generated by a current flowing through the current path (1) to measure the current flowing through the current path (1). The current sensor apparatus further comprises a magnetic field interrupter (5), placed between the current path (1) and the gap (3), for interrupting a magnetic field corresponding to a magnetic flux generated by the current passing through the current path (1) and not passing through the magnetic yoke (2), so that the magnetic field would not reach the magnetic sensor element (4).
摘要翻译： 本发明的目的是提供一种电流传感器装置，该电流传感器装置减少了通过磁轭内的空间的电流路径的位置变化引起的测量误差。 电流传感器装置包括围绕电流路径（1）的环形磁轭（2），具有间隙（3）的磁轭的一部分和放置在电机的间隙（3）中的磁传感器元件（4） 磁轭（2）。 磁传感器元件（4）检测由流过电流路径（1）的电流产生的间隙（3）中的磁场，以测量流过电流通路（1）的电流。 电流传感器装置还包括设置在电流路径（1）和间隙（3）之间的磁场断续器（5），用于中断与通过电流路径（1）的电流产生的磁通相对应的磁场 ）并且不通过磁轭（2），使得磁场将不会到达磁性传感器元件（4）。
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4.发明授权Magnetic sensor measuring apparatus and current sensor non-contact measuring apparatus 失效磁传感器测量装置和电流传感器非接触式测量装置公开(公告)号：US06316939B1
公开(公告)日：2001-11-13
申请号：US09648460
申请日：2000-08-28
申请人： Shiro Nakagawa , Katsumi Yabusaki
发明人： Shiro Nakagawa , Katsumi Yabusaki
IPC分类号： G01R3304
CPC分类号： G01R15/185
摘要： It is an object of the invention to provide a magnetic sensor apparatus and a current sensor apparatus each of which incorporates a fluxgate element for reducing an offset voltage and reducing variations in offset voltage. A drive section for exciting a sensor coil (2) includes a self-excited oscillation circuit having a resonant circuit part of which is made up of the sensor coil (2). The self-excited oscillation circuit includes an npn transistor (21) and a pnp transistor (31) that are amplifier elements used for continuing oscillation. The npn transistor (21) operates when an oscillation wave is on the positive side. The pnp transistor (31) operates when an oscillation wave is on the negative side. In the self-excited oscillation circuit, clamping of oscillation waves similarly occurs on both positive and negative sides. Therefore, the oscillation waveform has symmetrical positive and negative portions or has minor asymmetry if any.
摘要翻译： 本发明的目的是提供一种磁传感器装置和电流传感器装置，每个磁传感器装置和电流传感器装置包括用于减小偏移电压并减小偏移电压变化的磁通门元件。 用于激励传感器线圈（2）的驱动部分包括具有谐振电路部分由传感器线圈（2）构成的自激振荡电路。 自激振荡电路包括作为用于继续振荡的放大器元件的npn晶体管（21）和pnp晶体管（31）。 当振荡波在正极侧时，npn晶体管（21）工作。 当振荡波在负极侧时，pnp晶体管（31）工作。 在自激振荡电路中，振荡波的钳位同样发生在正侧和负侧。 因此，振荡波形具有对称的正和负部分，或者如果有的话具有较小的不对称性。
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公开(公告)号：US5741623A
公开(公告)日：1998-04-21
申请号：US990979
申请日：1992-12-09
申请人： Kenryo Namba , Akihiko Kuroiwa , Shiro Nakagawa
发明人： Kenryo Namba , Akihiko Kuroiwa , Shiro Nakagawa
CPC分类号： G11B7/249 , G11B7/246 , G11B7/2472 , G11B2007/24612 , G11B2007/25706 , G11B2007/25708 , G11B2007/25715 , G11B7/245 , G11B7/2467 , G11B7/248 , G11B7/2492 , G11B7/2495 , G11B7/2531 , G11B7/2534 , Y10S430/146
摘要： An optical recording medium has deposited on a substrate a recording layer incorporating therein a cyanine dye, preferably an indoline dye, and optionally incorporating therein an autoxidizable compound or a thermoplastic resin and/or a singlet oxygen quencher.
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公开(公告)号：US5652382A
公开(公告)日：1997-07-29
申请号：US473209
申请日：1995-06-07
申请人： Shiro Nakagawa , Atsuko Tsuchida , Eiji Takahashi , Kenji Aizawa
发明人： Shiro Nakagawa , Atsuko Tsuchida , Eiji Takahashi , Kenji Aizawa
CPC分类号： G01N27/048
摘要： An oscillator circuit includes a gate G.sub.11 of C-MOS type (Q.sub.1, Q.sub.2, and the like) having the function of increasing an operating current i with increasing operating frequency. A humidity sensor HS changing electric impedance thereof in accordance with humidity is arranged in part of the oscillator circuit. The oscillator circuit converts a change in humidity into a change in frequency, causes the gate G.sub.11 to convert the change in frequency into a change in operating current i, and outputs the converted change in operating current i. Further, in order to increase the change in operating current i due to the change in frequency, a series circuit consisting of a capacitor C.sub.13 and a resistor R.sub.17 is connected to the gate G.sub.11 as a capacitive load.
摘要翻译： 振荡器电路包括具有随着工作频率的增加而增加工作电流i的功能的C-MOS型（Q1，Q2等）的栅极G11。 湿度传感器HS根据湿度变化其阻抗被布置在振荡器电路的一部分中。 振荡器电路将湿度变化转换成频率变化，使门G11将频率变化转换为工作电流i的变化，并输出转换的工作电流变化i。 此外，为了增加由于频率变化引起的工作电流i的变化，由电容器C13和电阻器R17组成的串联电路作为电容性负载连接到栅极G11。
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公开(公告)号：US5531097A
公开(公告)日：1996-07-02
申请号：US385877
申请日：1995-02-09
申请人： Atsuko Tsuchida , Shiro Nakagawa
发明人： Atsuko Tsuchida , Shiro Nakagawa
CPC分类号： G01N27/122 , G01N27/121
摘要： An absolute humidity meter in which a humidity sensor changes an electrical impedance thereof-exponentially with respect to the relative humidity. A z-f converting circuit (impedance to frequency ) generates a pulse signal corresponding to the impedance. A time constant control differentiating circuit has an impedance of a voltage control variable impedance element changed exponentially by a control voltage, and outputs a differentiated signal obtained by differentiating the pulse signal. A waveform shaping circuit outputs a pulse signal train obtained by binary-valued the differentiated signal. An integrating circuit causes a first integrating circuit to obtain the control voltage by integrating the pulse signal train and a second integrating circuit to obtain an output voltage of a relative humidity signal by integrating the pulse signal train, and obtains an absolute humidity signal by causing at least one of these integrating circuit to control the control voltage or the output voltage with increasing temperature.
摘要翻译： 一种绝对湿度计，其中湿度传感器以其相对湿度指数地改变其电阻抗。 z-f转换电路（阻抗到频率）产生对应于阻抗的脉冲信号。 时间常数控制微分电路具有由控制电压呈指数变化的电压控制可变阻抗元件的阻抗，并且输出通过微分脉冲信号获得的微分信号。 波形整形电路输出通过二进制值的微分信号获得的脉冲信号串。 积分电路使第一积分电路通过积分脉冲信号串和第二积分电路来获得控制电压，以通过对脉冲信号序列进行积分来获得相对湿度信号的输出电压，并通过使得 这些积分电路中的至少一个用于随温度升高来控制控制电压或输出电压。
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公开(公告)号：US5310425A
公开(公告)日：1994-05-10
申请号：US15165
申请日：1993-02-09
申请人： Shiro Nakagawa , Taisuke Domon , Takehiro Imai , Eiji Takahishi
发明人： Shiro Nakagawa , Taisuke Domon , Takehiro Imai , Eiji Takahishi
CPC分类号： G03G15/0853 , G03G15/0851
摘要： A toner concentration detecting device for detecting a toner concentration of a two component developer including a differential transformer which is connected with a phase detecting circuit. A variable capacitance diode is connected between the primary coil and the secondary coil and a variable resistor is provided to supply the variable capacitance diode with a DC voltage to vary the capacitance of the diode. The variable resistor and DC voltage are located at a remote location from the transformer.
摘要翻译： 一种用于检测包括与相位检测电路连接的差分变压器的双组分显影剂的调色剂浓度的调色剂浓度检测装置。 一个可变电容二极管连接在初级线圈和次级线圈之间，并提供可变电阻器来为可变电容二极管提供直流电压以改变二极管的电容。 变压器和直流电压位于远离变压器的位置。
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公开(公告)号：US06194121B1
公开(公告)日：2001-02-27
申请号：US09010010
申请日：1998-01-21
申请人： Kenryo Namba , Akihiko Kuroiwa , Shiro Nakagawa
发明人： Kenryo Namba , Akihiko Kuroiwa , Shiro Nakagawa
IPC分类号： G11B724
CPC分类号： G11B7/2492 , G11B7/245 , G11B7/2467 , G11B7/2472 , G11B7/248 , G11B7/2495 , G11B7/2533 , G11B7/2534 , G11B7/2572 , G11B2007/24612 , G11B2007/25706 , G11B2007/25708 , G11B2007/25715 , Y10S430/146
摘要： An optical recording medium has deposited on a substrate a recording layer incorporating therein a cyanine dye, preferably an indoline dye, and optionally incorporating therein an autoxidizable compound or a thermoplastic resin and/or a singlet oxygen quencher.
摘要翻译： 光学记录介质在衬底上沉积了一种其中结合有花青染料，优选二氢吲哚染料的记录层，并且可选地掺入可自动氧化的化合物或热塑性树脂和/或单线态氧猝灭剂。
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公开(公告)号：US5515723A
公开(公告)日：1996-05-14
申请号：US383314
申请日：1995-02-03
申请人： Atsuko Tsuchida , Shiro Nakagawa
发明人： Atsuko Tsuchida , Shiro Nakagawa
CPC分类号： G01N27/121 , G01N27/122
摘要： A humidity sensor 1 has an impedance Zs thereof changed exponentially with respect to a relative humidity. A z-f conversion circuit 2 generates a pulse signal S1 corresponding to the impedance Zs. A time constant controlled differentiating circuit 3 has an impedance Zt of a voltage control variable impedance element 32 changed exponentially by a control voltage Vc, and outputs a differentiated signal S2 obtained by differentiating the pulse signal S1. A waveform shaping circuit 4 outputs a pulse signal train S3 obtained by binary-coding the differentiated signal S2. An integrating circuit 5 causes a first integrating circuit 51 to obtain the control voltage Vc by integrating the pulse signal train S3 and causes a second integrating circuit 52 to obtain a humidity signal S4 by integrating the pulse signal train S3. A bias circuit 6 applies a bias voltage to a control terminal 323 of the voltage control variable impedance element 32.
摘要翻译： 湿度传感器1的阻抗Zs相对于相对湿度呈指数变化。 z-f转换电路2产生与阻抗Zs对应的脉冲信号S1。 时间常数控制差动电路3的电压控制可变阻抗元件32的阻抗Zt由控制电压Vc呈指数变化，并且输出通过微分脉冲信号S1获得的微分信号S2。 波形整形电路4输出通过对差分信号S2进行二进制编码而获得的脉冲信号串S3。 积分电路5使第一积分电路51通过对脉冲信号序列S3进行积分来获得控制电压Vc，并使第二积分电路52通过对脉冲信号串S3进行积分来获得湿度信号S4。 偏置电路6将偏置电压施加到电压控制可变阻抗元件32的控制端子323。
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