公开(公告)号：US20110074246A1

公开(公告)日：2011-03-31

申请号：US12889457

申请日：2010-09-24

申请人： Junichi NISHIE ,  Takaaki ASADA ,  Mio FURUYA ,  Takayuki SHIMAMOTO ,  Kazuhiro EBARA

发明人： Junichi NISHIE ,  Takaaki ASADA ,  Mio FURUYA ,  Takayuki SHIMAMOTO ,  Kazuhiro EBARA

IPC分类号： H01L41/053

CPC分类号： G10K9/122

摘要： An ultrasonic transducer includes a case, a reflective portion, and a piezoelectric body. The case has a substantially cylindrical shape including one closed end in the center axis direction that defines a top. The piezoelectric body is disposed on the inner surface of the top of the case. The reflective portion is arranged to oppose and be spaced apart from the piezoelectric body. The distance between the piezoelectric body and the reflective portion is greater than the maximum displacement of the piezoelectric body and is substantially an odd number multiple of a ¼ wavelength of sound waves or less than or equal to the ¼ wavelength.

摘要翻译： 超声换能器包括壳体，反射部分和压电体。 壳体具有基本上圆柱形的形状，包括限定顶部的中心轴线方向上的一个封闭端。 压电体设置在壳体顶部的内表面上。 反射部分被布置成与压电体相对并间隔开。 压电体和反射部之间的距离大于压电体的最大位移，并且基本上是声波的1/4波长或小于或等于1/4波长的奇数倍。

公开(公告)号：US5635786A

公开(公告)日：1997-06-03

申请号：US455717

申请日：1995-05-31

申请人： Katsumi Fujimoto ,  Takeshi Nakamura ,  Kazuhiro Ebara ,  Nobuyuki Ishitoko

发明人： Katsumi Fujimoto ,  Takeshi Nakamura ,  Kazuhiro Ebara ,  Nobuyuki Ishitoko

IPC分类号： G01C19/56 ,  G01C19/5649 ,  G01C19/5663 ,  H01L41/08

CPC分类号： G01C19/5642

摘要： A vibrating gyroscope 10 includes a regular quadrangular prism-shaped vibrator 12. The vibrator 12 includes, a first piezoelectric base plate 14a and a second piezoelectric base plate 14b, which are polarized reversely each other in a direction of thickness. On a main surface of the first piezoelectric base plate 14a, two divided electrodes 16, 16 are formed in laterally spaced relationship. On a main surface of the second piezoelectric base plate 14b, a common electrode 18 is formed. Between the first piezoelectric base plate 14a and the second piezoelectric base plate 14b, a dummy electrode 20 is formed. One output terminal of an oscillation circuit 30 as a driving means is connected to the two divided electrodes 16, 16 of the vibrator 12, via resistors 32a and 32b. Another output terminal of the oscillation circuit 30 is connected to the common electrode 18 of the vibrator 12. The two divided electrodes 16, 16 of the vibrator 12 are respectively connected to a non-inverting input terminal and an inverting input terminal of a differential amplifier circuit 36 as a detecting means, via resistors 34a and 34b.

摘要翻译： 振动陀螺仪10包括规则的四边形棱柱形振动器12.振动器12包括在厚度方向上彼此反向偏振的第一压电基板14a和第二压电基板14b。 在第一压电基板14a的主表面上，以横向间隔的关系形成两个分开的电极16,16。 在第二压电基板14b的主表面上形成公共电极18。 在第一压电基板14a和第二压电基板14b之间形成有虚拟电极20。 作为驱动装置的振荡电路30的一个输出端子经由电阻器32a和32b连接到振动器12的两个分割电极16,16。 振荡电路30的另一个输出端子连接到振动器12的公共电极18.振动器12的两个分开的电极16,16分别连接到差分放大器的非反相输入端子和反相输入端子 电路36作为检测装置，通过电阻34a和34b。

公开(公告)号：US20110077537A1

公开(公告)日：2011-03-31

申请号：US12891265

申请日：2010-09-27

申请人： Kazuhiro EBARA ,  Takaaki ASADA ,  Mio FURUYA

发明人： Kazuhiro EBARA ,  Takaaki ASADA ,  Mio FURUYA

IPC分类号： A61B5/0245

CPC分类号： A61B5/0245 ,  A61B5/681 ,  A61B2562/0247 ,  A61B2562/028 ,  A61B2562/046

摘要： A pulse wave measurement device includes a vibrating membrane configured to transfer displacement of a skin surface caused by a pulse wave, a frame portion configured to fix the outer region of the vibrating membrane, a partitioning portion configured to partition a central region of the vibrating membrane into a plurality of sections, and a plurality of sensor elements respectively provided in the plurality of sections and arranged on the vibrating membrane within each of the plurality of sections. The sensor element in each section is configured to convert vibration of the vibrating membrane in that section into an electric signal. The partitioning portion is coupled to the vibrating membrane. The vibrating membrane is coupled to the frame portion. Thus, the sections of the vibrating membrane partitioned by the partitioning portion vibrate individually, and each section of the vibrating membrane does not substantially interfere with the other sections.

摘要翻译： 一种脉波测量装置，包括：振动膜，其被配置为传递由脉搏波引起的皮肤表面的位移，构成为固定所述振动膜的外部区域的框架部;隔离部，其配置成将所述振动膜的中心区域分隔开; 多个部分中的多个传感器元件和分别设置在多个部分中的多个传感器元件，并且布置在多个部分中的每个部分内的振动膜上。 每个部分中的传感器元件被配置为将该部分中的振动膜的振动转换为电信号。 分隔部分耦合到振动膜。 振动膜与框架部分相连。 因此，由分隔部分隔开的振动膜的部分分别振动，振动膜的各部分基本上不干扰其他部分。

公开(公告)号：US06588274B1

公开(公告)日：2003-07-08

申请号：US09697412

申请日：2000-10-26

申请人： Akira Kumada ,  Akira Mori ,  Kazuhiro Ebara

发明人： Akira Kumada ,  Akira Mori ,  Kazuhiro Ebara

IPC分类号： G01P900

CPC分类号： G01C19/56

摘要： A self-diagnosing circuit for a vibrating gyroscope for detecting a vibration due to a Coriolis force including a differential operating circuit for determining a difference between output signals outputted from a plurality of detecting electrodes which provided on the vibrator to detect the vibration due to the Coriolis force; and an offset signal source for superposing an offset signal on at least one of the signals outputted from said plurality of detecting electrodes such that the signals are offset with different signal levels.

摘要翻译： 一种用于检测由科里奥利力引起的振动的振动陀螺仪的自诊断电路，包括用于确定从设置在振动器上的多个检测电极输出的输出信号之间的差异的差分运算电路，以检测由科里奥利引起的振动 力; 以及偏移信号源，用于在从所述多个检测电极输出的至少一个信号上叠加偏移信号，使得信号以不同的信号电平偏移。

公开(公告)号：US08354775B2

公开(公告)日：2013-01-15

申请号：US12889457

申请日：2010-09-24

申请人： Junichi Nishie ,  Takaaki Asada ,  Mio Furuya ,  Takayuki Shimamoto ,  Kazuhiro Ebara

发明人： Junichi Nishie ,  Takaaki Asada ,  Mio Furuya ,  Takayuki Shimamoto ,  Kazuhiro Ebara

IPC分类号： H01L41/08

CPC分类号： G10K9/122

摘要： An ultrasonic transducer includes a case, a reflective portion, and a piezoelectric body. The case has a substantially cylindrical shape including one closed end in the center axis direction that defines a top. The piezoelectric body is disposed on the inner surface of the top of the case. The reflective portion is arranged to oppose and be spaced apart from the piezoelectric body. The distance between the piezoelectric body and the reflective portion is greater than the maximum displacement of the piezoelectric body and is substantially an odd number multiple of a ¼ wavelength of sound waves or less than or equal to the ¼ wavelength.

摘要翻译： 超声换能器包括壳体，反射部分和压电体。 壳体具有基本上圆柱形的形状，包括限定顶部的中心轴线方向上的一个封闭端。 压电体设置在壳体顶部的内表面上。 反射部分被布置成与压电体相对并间隔开。 压电体和反射部之间的距离大于压电体的最大位移，并且基本上是声波的1/4波长或小于或等于1/4波长的奇数倍。

公开(公告)号：US06666090B2

公开(公告)日：2003-12-23

申请号：US09888678

申请日：2001-06-25

申请人： Akira Mori ,  Akira Kumada ,  Kazuhiro Ebara

发明人： Akira Mori ,  Akira Kumada ,  Kazuhiro Ebara

IPC分类号： G01C1900

CPC分类号： G01C19/5649

摘要： A vibrating gyroscope includes a vibrator having a driving electrode and a sensor electrode, a driving circuit for applying a driving voltage to the driving electrode, a detection circuit which receives, from the sensor electrode, a signal corresponding to a bending displacement of the vibrator, a signal processing circuit for processing a signal input from the detection circuit to detect an angular velocity, a power supply circuit, and a diagnostic circuit for examining whether or not the detection circuit, the driving circuit, the signal processing circuit, and the power supply circuit are all functioning normally.

公开(公告)号：US06564638B1

公开(公告)日：2003-05-20

申请号：US09459425

申请日：1999-12-13

申请人： Kazuhiro Ebara

发明人： Kazuhiro Ebara

IPC分类号： G01P904

CPC分类号： G01C19/5649

摘要： A vibrating gyroscope includes: a vibrator having an driving electrode and two detecting electrodes; a first drive circuit for applying a first drive signal to the driving electrode; a second drive circuit for applying a second drive signal having an inverted phase of the drive signal, or an inverted phase of a detection signal detected from the two detecting electrodes, to the detecting electrodes; and a detection circuit for detecting the detected signal in correspondence with the rotational angular velocity from the two detecting electrodes.

摘要翻译： 振动陀螺仪包括：具有驱动电极和两个检测电极的振动器; 用于将第一驱动信号施加到驱动电极的第一驱动电路; 第二驱动电路，用于将具有驱动信号的反相的第二驱动信号或从两个检测电极检测的检测信号的反相，施加到检测电极; 以及检测电路，用于检测与来自两个检测电极的旋转角速度对应的检测信号。

公开(公告)号：US6158281A

公开(公告)日：2000-12-12

申请号：US728847

申请日：1996-10-10

申请人： Kazuhiro Ebara ,  Katsumi Fujimoto ,  Hiroshi Nishiyama ,  Takeshi Nakamura

发明人： Kazuhiro Ebara ,  Katsumi Fujimoto ,  Hiroshi Nishiyama ,  Takeshi Nakamura

IPC分类号： G01C19/56 ,  G01C19/5649 ,  G01P9/04

CPC分类号： G01C19/5649

摘要： A vibration gyroscope 10 includes a vibrator 12. The vibrator 12 has a vibration member 14 formed in a regular triangular prism shape. On side faces of the vibration member 14, piezoelectric elements 16a, 16b and 16c are formed. Two of the piezoelectric elements 16a and 16b are connected to resistors 26 and 28, respectively. Between the other feedback piezoelectric element 16c and these resistors, an oscillation circuit 30 is connected. A signal having a phase opposite to that of the signal output from the feedback piezoelectric element 16c is input to the vibration member 14 serving as a grounding terminal by a phase inverter 34. The signals output from the two piezoelectric elements 16a and 16b are input to a differential circuit 36. The differential circuit 36 is connected to a synchronous detection circuit 38 and connected to a smoothing circuit 40 and a DC amplifier 42 in series.

摘要翻译： 振动陀螺仪10包括振动器12.振动器12具有以正三角形棱柱形状形成的振动部件14。 在振动部件14的侧面形成压电元件16a，16b，16c。 两个压电元件16a和16b分别连接到电阻器26和28。 在另一反馈压电元件16c与这些电阻之间，连接振荡电路30。 具有与从反馈压电元件16c输出的信号相反的相位的信号通过相位逆变器34输入到用作接地端子的振动部件14.由两个压电元件16a和16b输出的信号被输入到 差分电路36.差分电路36连接到同步检测电路38并串联连接到平滑电路40和DC放大器42。

公开(公告)号：US5922954A

公开(公告)日：1999-07-13

申请号：US754704

申请日：1996-11-21

申请人： Kazuhiro Ebara ,  Katsumi Fujimoto

发明人： Kazuhiro Ebara ,  Katsumi Fujimoto

IPC分类号： G01C19/56 ,  G01C19/5649 ,  G01C19/00

CPC分类号： G01C19/5649

摘要： A vibration gyroscope includes a vibrator. The vibrator has a vibration member formed in a regular triangular prism shape. On side faces of the vibration member, three piezoelectric elements are formed, respectively. Two of the piezoelectric elements are connected to the input terminal of an oscillation circuit through resistors which serve as the loads of the two piezoelectric elements, respectively. The output terminal of the oscillation circuit is connected to the other piezoelectric element. The former piezoelectric elements are also connected to the non-inverting input terminal and the inverting input terminal of a differential amplifier circuit, respectively. By changing the impedances of the resistors, the characteristics of the vibration gyroscope is adjusted.

摘要翻译： 振动陀螺仪包括振动器。 振动器具有形成为正三角形棱柱形状的振动部件。 在振动部件的侧面分别形成三个压电元件。 两个压电元件通过分别作为两个压电元件的负载的电阻连接到振荡电路的输入端。 振荡电路的输出端子连接到另一个压电元件。 以前的压电元件也分别连接到差分放大器电路的非反相输入端子和反相输入端子。 通过改变电阻的阻抗，调整振动陀螺仪的特性。

公开(公告)号：US6058777A

公开(公告)日：2000-05-09

申请号：US26388

申请日：1998-02-19

申请人： Katsumi Fujimoto ,  Kazuhiro Ebara ,  Nobuyuki Ishitoko

发明人： Katsumi Fujimoto ,  Kazuhiro Ebara ,  Nobuyuki Ishitoko

IPC分类号： G01C19/56 ,  G01C19/5649 ,  G01P9/00 ,  H01L41/08

CPC分类号： G01C19/5642

摘要： A vibrating gyroscope includes a vibrating unit and a driving unit for driving the vibrating unit. The vibrating unit includes at least a pair of piezoelectric bodies stacked and polarized in a stacked direction thereof such that polarizing directions of the piezoelectric bodies are opposed to each other. An interface between the piezoelectric bodies is electrically floating with respect to a reference potential. The driving circuit receives at least one feedback signal from the vibrating unit and outputs to the vibrating unit a driving signal which has substantially the same phase as the feedback signal.

摘要翻译： 振动陀螺仪包括振动单元和用于驱动振动单元的驱动单元。 所述振动单元包括至少一对压电体，所述至少一对压电体在其堆叠方向上堆叠并极化，使得所述压电体的偏振方向彼此相对。 压电体之间的界面相对于参考电位电浮动。 驱动电路从振动单元接收至少一个反馈信号，并向振动单元输出与反馈信号基本相同的驱动信号。