公开(公告)号：US5812495A

公开(公告)日：1998-09-22

申请号：US668411

申请日：1996-06-21

申请人： Muneharu Yamashita ,  Jun Tabota ,  Yasuharu Matsui

发明人： Muneharu Yamashita ,  Jun Tabota ,  Yasuharu Matsui

IPC分类号： G01S7/521 ,  G01S7/527 ,  G01S7/529 ,  G01S15/10 ,  G01S15/00 ,  G01N29/00

CPC分类号： G01S7/521 ,  G01S7/527 ,  G01S7/529

摘要： An ultrasonic rangefinder capable of effectively removing high-level, directly transmitted wave components. The rangefinder can be used even at low temperatures. The rangefinder comprises an input signal-processing circuit, an output signal-processing circuit, and a gain control circuit inserted between the input and output signal-processing circuits. The output signal-processing circuit includes a reception amplification circuit and a detection circuit, the reception amplification circuit having an amplifier. The gain control circuit lowers the gain of the reception amplification circuit to raise the undetected and detected input voltage levels applied to the detection circuit. The gain control circuit comprises three control devices. The first control device is driven into conduction when its input pulse signal varies from a low level to a high level. The second control device reduces the feedback resistance of the amplifier of the reception amplification circuit in response to conduction of the first control device. In response to conduction of the first control device, the third control device controls the time for which the second control device operates.

摘要翻译： 超声波测距仪能够有效地去除高级直接传输的波浪成分。 即使在低温下也可使用测距仪。 测距仪包括输入信号处理电路，输出信号处理电路和插入在输入和输出信号处理电路之间的增益控制电路。 输出信号处理电路包括接收放大电路和检测电路，接收放大电路具有放大器。 增益控制电路降低接收放大电路的增益，以提高未检测到和检测到的施加到检测电路的输入电压电平。 增益控制电路包括三个控制装置。 当其输入脉冲信号从低电平变化到高电平时，第一控制装置被驱动导通。 第二控制装置响应于第一控制装置的导通而降低接收放大电路的放大器的反馈电阻。 响应于第一控制装置的导通，第三控制装置控制第二控制装置工作的时间。

公开(公告)号：US6094984A

公开(公告)日：2000-08-01

申请号：US925896

申请日：1997-09-08

申请人： Hiroshi Asano ,  Jun Tabota ,  Muneharu Yamashita ,  Toshihiro Mizuno ,  Masayuki Ichimaru

发明人： Hiroshi Asano ,  Jun Tabota ,  Muneharu Yamashita ,  Toshihiro Mizuno ,  Masayuki Ichimaru

IPC分类号： G01P1/02 ,  G01P15/09 ,  H05K3/30

CPC分类号： G01P1/023 ,  G01P15/0915 ,  H05K3/306

摘要： An acceleration sensor 1 comprises a circuit board 3 on which an acceleration detecting element 2 is carried. A plurality of connecting terminals 4 arranged along the periphery of the circuit board 3 are projected outward after penetrating through a metal base plate 5. The metal base plate 5 is fixed to the connecting terminals 4 spaced apart from the circuit board 3 by a predetermined distance in a state being insulated from the connecting terminals 4. The peripheral edge of the metal base plate 5 is connected to a case 7 covering the entire acceleration sensor 1. Circuit elements constituting a signal processing circuit for processing a detection signal of the acceleration detecting element 2 are arranged on the upper surface and the lower surface of the circuit board 3.

摘要翻译： 加速度传感器1包括承载有加速度检测元件2的电路基板3。 沿着电路板3的周边布置的多个连接端子4在穿过金属基板5之后向外突出。金属基板5固定到与电路板3间隔开预定距离的连接端子4 在与连接端子4绝缘的状态下。金属基板5的周缘连接到覆盖整个加速度传感器1的壳体7.构成用于处理加速度检测元件的检测信号的信号处理电路的电路元件 2布置在电路板3的上表面和下表面上。

公开(公告)号：US5517845A

公开(公告)日：1996-05-21

申请号：US392084

申请日：1995-02-22

申请人： Muneharu Yamashita ,  Jun Tabota ,  Toshihiro Mizuno ,  Jiro Inoue

发明人： Muneharu Yamashita ,  Jun Tabota ,  Toshihiro Mizuno ,  Jiro Inoue

IPC分类号： G01P1/00 ,  G01P1/02 ,  G01P15/09 ,  G01P21/00

CPC分类号： G01P21/00 ,  G01P1/006 ,  G01P1/023 ,  G01P15/0922

摘要： An acceleration sensor includes a piezoelectric element for outputting an electric signal corresponding to acceleration applied thereto, a signal processor for processing a signal outputted from the piezoelectric element, an AC signal outputting device for receiving an externally inputted signal and generating an AC signal which is synchronized with the period of the timing signal in response to receipt of the timing signal and for applying the AC signal to the piezoelectric element, and a capacitor connected between the AC signal outputting device and the piezoelectric element for detecting a fault in the acceleration sensor.

公开(公告)号：US5388459A

公开(公告)日：1995-02-14

申请号：US997675

申请日：1992-12-28

申请人： Jiro Inoue ,  Muneharu Yamashita ,  Jun Tabota ,  Toshihiro Mizuno

发明人： Jiro Inoue ,  Muneharu Yamashita ,  Jun Tabota ,  Toshihiro Mizuno

IPC分类号： G01P15/09

CPC分类号： G01P15/0915

摘要： As acceleration sensor has an insulating substrate, a pair of signal deriving electrodes provided on one surface and an acceleration detecting element electrically connected to the pair of electrodes. The acceleration detecting element is provided with first and second piezoelectric elements, having a pair of facing end surfaces, which are directly or indirectly coupled to each other to be polarized in reverse directions. First end surfaces of the first and second piezoelectric elements are electrically connected to the pair of signal deriving electrodes respectively while other end surfaces, being opposite to the first end surfaces, of the first and second piezoelectric elements are electrically connected with each other.

摘要翻译： 由于加速度传感器具有绝缘基板，一对设置在一个表面上的信号导出电极和与该对电极电连接的加速度检测元件。 加速度检测元件设置有第一和第二压电元件，其具有一对相对的端表面，它们彼此直接或间接耦合以在相反的方向上极化。 第一和第二压电元件的第一端面分别电连接到一对信号导出电极，而与第一和第二压电元件的第一端面相对的其它端表面彼此电连接。

公开(公告)号：US5481915A

公开(公告)日：1996-01-09

申请号：US163436

申请日：1993-12-08

申请人： Jun Tabota ,  Muneharu Yamashita ,  Hiroshi Asano ,  Toshihiro Mizuno ,  Jiro Inoue

发明人： Jun Tabota ,  Muneharu Yamashita ,  Hiroshi Asano ,  Toshihiro Mizuno ,  Jiro Inoue

IPC分类号： G01P15/09

CPC分类号： G01P15/0915

摘要： An acceleration sensor includes a circuit board having an acceleration signal output electrode and a ground electrode formed on its one major surface, a piezoelectric element fixed on the acceleration signal output electrode, a conductive member fixed on the ground electrode, and a weight member mounted in a crosslinked manner and fixed on the conductive member and the piezoelectric element, and wherein the piezoelectric element is so arranged that its axis of polarization is in a direction along the direction in which acceleration is applied, and the weight member is so constructed that its one surface in contact with the piezoelectric element and the conductive member has conductivity.

摘要翻译： 加速度传感器包括具有加速度信号输出电极和形成在其一个主表面上的接地电极的电路板，固定在加速度信号输出电极上的压电元件，固定在接地电极上的导电部件和安装在 并且固定在导电部件和压电元件上，并且其中压电元件被布置成使得其偏振轴沿着沿着加速度的方向的方向，并且配重构件被构造成使得它的一个 与压电元件和导电部件接触的表面具有导电性。

公开(公告)号：US5438859A

公开(公告)日：1995-08-08

申请号：US950478

申请日：1992-09-24

申请人： Muneharu Yamashita ,  Jun Tabota ,  Toshihiro Mizuno ,  Jiro Inoue

发明人： Muneharu Yamashita ,  Jun Tabota ,  Toshihiro Mizuno ,  Jiro Inoue

IPC分类号： G01P1/00 ,  G01P1/02 ,  G01P15/09 ,  G01P21/00

CPC分类号： G01P21/00 ,  G01P1/006 ,  G01P1/023 ,  G01P15/0922

摘要： An acceleration sensor includes a piezoelectric element for outputting an electric signal corresponding to acceleration applied thereto, a signal processor for processing a signal outputted from the piezoelectric element, an AC signal outputting device for receiving an externally inputted signal and generating an AC signal which is synchronized with the period of the timing signal in response to receipt of the timing signal and for applying the AC signal to the piezoelectric element, and a capacitor connected between the AC signal outputting device and the piezoelectric element for detecting a fault in the acceleration sensor.

摘要翻译： 加速度传感器包括用于输出对应于加速度的加速度的电信号的压电元件，用于处理从压电元件输出的信号的信号处理器，用于接收外部输入信号的AC信号输出装置，并产生同步的AC信号 响应于接收到定时信号并且将AC信号施加到压电元件的定时信号的周期，以及连接在AC信号输出装置和用于检测加速度传感器中的故障的压电元件之间的电容器。

公开(公告)号：US5907521A

公开(公告)日：1999-05-25

申请号：US668386

申请日：1996-06-21

申请人： Yasuharu Matsui ,  Jun Tabota ,  Keiichi Kami

发明人： Yasuharu Matsui ,  Jun Tabota ,  Keiichi Kami

IPC分类号： G01S7/521 ,  G10K11/00 ,  G01S15/00 ,  H04R17/00

CPC分类号： G10K11/004 ,  G01S7/521

摘要： An ultrasonic range finder which can effectively suppress the influence of direct transmission waves is provided. An ultrasonic range finder according to the present invention comprises a transmitting ultrasonic sensor, a receiving ultrasonic sensor, and a case which holds both ultrasonic sensors mounted and separated on the same surface, wherein a foam member fabricated to contain air bubbles is provided between the ultrasonic sensors within the case and the foam member is exposed to the surface of the case. Each of the sections of the transmitting and receiving ultrasonic sensors (which are held within the case) are covered with a second foam member and the matching layer sections of the transmitting and receiving ultrasonic sensors project beyond the surface of the case.

摘要翻译： 提供了可以有效地抑制直接传输波的影响的超声波测距仪。 根据本发明的超声波测距装置包括发射超声波传感器，接收超声波传感器和保持在同一表面上安装和分离的两个超声波传感器的壳体，其中在超声波之间设置包含气泡的泡沫构件 壳体内的传感器和泡沫构件暴露于壳体的表面。 发送和接收超声波传感器（其保持在壳体内）的每个部分被第二泡沫构件覆盖，并且发射和接收超声波传感器的匹配层部分突出超过壳体的表面。

公开(公告)号：US20060162453A1

公开(公告)日：2006-07-27

申请号：US10540240

申请日：2004-07-01

申请人： Atsushi Mikado ,  Jun Tabota

发明人： Atsushi Mikado ,  Jun Tabota

IPC分类号： G01P15/08 ,  G01P3/44

CPC分类号： G01P15/09 ,  G01P15/097

摘要： A compact, high-sensitivity acceleration sensor that is prevented from being affected by factors other than acceleration, such as a change in temperature, has a bimorph acceleration-sensor element including first and second resonators attached to opposite sides of a base plate with respect to a direction in which acceleration is applied. One longitudinal end of the acceleration-sensor element is fixed such that the first and second resonators bend in the same direction in response to the acceleration. Changes in frequency or changes in impedance in the first and second resonators caused by the bending of the acceleration-sensor element are differentially detected in order to detect the acceleration. The acceleration-sensor element is bendable about a central bending plane in response to the acceleration, the central bending plane being positioned at a central portion of the base plate with respect to the application direction of acceleration. A vibrating section of each of the first and second resonators is disposed close to the fixed end of the acceleration-sensor element.

公开(公告)号：US06810740B2

公开(公告)日：2004-11-02

申请号：US10376777

申请日：2003-02-28

申请人： Jun Tabota

发明人： Jun Tabota

IPC分类号： G01P1509

CPC分类号： G01P15/0922

摘要： An acceleration sensor includes a piezoelectric element and a support member for supporting the piezoelectric element at both longitudinal ends thereof. The piezoelectric element includes a laminate having a plurality of piezoelectric layers. An intermediate piezoelectric layer is a dummy layer which generates no charge when acceleration is applied thereto. Each of the two outer piezoelectric layers includes four longitudinally aligned regions separated at two borders and one central border where stress is inverted when the acceleration is applied. The two outer piezoelectric layers are polarized in the direction of thickness of the piezoelectric element such that cells adjacent to each other in the longitudinal direction of the piezoelectric elements have opposite polarization directions and such that cells aligned with each other in the direction of thickness have the same polarization. Electrodes are arranged on the top and bottom major surfaces of the piezoelectric element and between the piezoelectric layers so that two cells on one side of the central border are connected in parallel with the other two cells on the other side of the central border are connected in parallel in each of the two outer piezoelectric layers, and so that the two parallel-connected cells in the one side are serially connected with the other two parallel-connected cells on the other side. At least one of the electrodes on each of the top and bottom major surfaces and between the layers extends to different longitudinal end surfaces of the piezoelectric element.

摘要翻译： 加速度传感器包括压电元件和用于在其两个纵向端部处支撑压电元件的支撑构件。 压电元件包括​​具有多个压电层的层叠体。 中间压电层是当加速度时不产生电荷的虚拟层。 两个外部压电层中的每一个包括在两个边界处分开的四个纵向排列的区域和一个中心边界，其中施加加速度时应力被反转。 两个外部压电层在压电元件的厚度方向上极化，使得在压电元件的纵向彼此相邻的电池具有相反的偏振方向，并且使得在厚度方向上彼此对准的电池具有 相同的极化 电极布置在压电元件的顶部和底部主表面和压电层之间，使得中心边界一侧上的两个电池与中央边界另一侧上的另外两个电池并联连接 平行于两个外部压电层中的每一个，并且使得一侧中的两个并联连接的单元与另一个两个并联连接的单元串联连接。 顶表面和底部主表面中以及层之间的电极中的至少一个延伸到压电元件的不同纵向端面。

公开(公告)号：US6043588A

公开(公告)日：2000-03-28

申请号：US683231

申请日：1996-07-18

申请人： Jun Tabota ,  Mitsugu Ogiura ,  Toshihiko Unami

发明人： Jun Tabota ,  Mitsugu Ogiura ,  Toshihiko Unami

IPC分类号： G01P15/09 ,  H01L41/113 ,  H01L41/08

CPC分类号： G01P15/0922 ,  H01L41/1132 ,  G01N2291/02827

摘要： A piezoelectric sensor has a piezoelectric element having a specific axis of sensitivity and a package for the piezoelectric element. The package has a rectangular parrallelopiped configuration with opposite longitudinal end surfaces having a height-to-width ratio of about 1:1. External lead electrodes are formed to cover at least the longitudinal end surfaces. A method and apparatus for detecting if the sensor is disposed in the proper posture is also disclosed.

摘要翻译： 压电传感器具有具有特定的灵敏轴的压电元件和用于压电元件的封装。 该包装具有长方形的直立螺旋形结构，其具有相对的纵向端面，其高度与宽度之比约为1:1。 外部引线电极形成为至少覆盖纵向端面。 还公开了一种用于检测传感器是否处于适当姿势的方法和装置。