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    • 1. 发明申请
    • PIEZOELECTRIC SENSOR AND SENSING INSTRUMENT
    • 压电传感器和感应仪器
    • US20090288488A1
    • 2009-11-26
    • US12454518
    • 2009-05-19
    • Junichiro YamakawaKazuo AkaikeTakeru MutohHiroyuki Kukita
    • Junichiro YamakawaKazuo AkaikeTakeru MutohHiroyuki Kukita
    • G01N29/00H01L41/047
    • H01L41/1132H01L41/042
    • To provide a piezoelectric sensor in which a first electrode for measurement and a second electrode for reference are provided apart from each other on one surface side of a piezoelectric piece and a common electrode is provided on the other surface side so as to face the first and second electrodes, and which achieves highly reliable oscillation by reducing the influence of electrical coupling between the first electrode and the second electrode. A piezoelectric sensor includes: a first electrode for measurement and a second electrode for reference provided apart from each other on one surface side of a piezoelectric piece; a common electrode provided on the other surface side of the piezoelectric piece commonly for the first electrode and the second electrode to face the first electrode and the second electrode; and an adsorption layer formed on an area, of the common electrode, to which the first electrode is projected, to adsorb a substance to be sensed. This structure prevents the first electrode and the second electrode from being electrically coupled due to the impedance of the sample fluid.
    • 提供一种压电传感器,其中第一测量用电极和第二参考用电极在压电片的一个表面侧彼此分开设置,并且公共电极设置在另一个表面侧上以面向第一和 第二电极,并且通过减少第一电极和第二电极之间的电耦合的影响来实现高度可靠的振荡。 一种压电传感器包括:用于测量的第一电极和用于在压电片的一个表面侧彼此分开的第二参考电极; 在所述压电片的另一个表面侧上设置的公共电极,所述公共电极通常用于所述第一电极,所述第二电极与所述第一电极和所述第二电极相对; 以及形成在所述公共电极的与所述第一电极投影的区域上的吸附层,以吸附待感测的物质。 这种结构防止了第一电极和第二电极由于样品流体的阻抗而电耦合。
    • 2. 发明授权
    • Piezoelectric sensor and sensing instrument
    • 压电传感器和传感仪器
    • US08176773B2
    • 2012-05-15
    • US12454518
    • 2009-05-19
    • Junichiro YamakawaKazuo AkaikeTakeru MutohHiroyuki Kukita
    • Junichiro YamakawaKazuo AkaikeTakeru MutohHiroyuki Kukita
    • G01N29/036H01L41/047
    • H01L41/1132H01L41/042
    • To provide a piezoelectric sensor in which a first electrode for measurement and a second electrode for reference are provided apart from each other on one surface side of a piezoelectric piece and a common electrode is provided on an opposite surface side so as to face the first and second electrodes. A piezoelectric sensor includes: a first electrode for measurement and a second electrode for reference provided apart from each other on one surface side of a piezoelectric piece; a common electrode provided on an opposite surface side of the piezoelectric piece commonly for the first electrode and the second electrode to face the first electrode and the second electrode; and an adsorption layer formed on an area, of the common electrode, to which the first electrode is faced across the piezoelectric piece, to adsorb a substance to be sensed.
    • 为了提供一种压电传感器,其中用于测量的第一电极和用于参考的第二电极彼此分离地设置在压电片的一个表面侧上,并且公共电极设置在相对的表面侧上以面对第一和 第二电极。 一种压电传感器包括:用于测量的第一电极和用于在压电片的一个表面侧彼此分开的第二参考电极; 公共电极,设置在压电片的相对表面侧,通常用于第一电极,第二电极与第一电极和第二电极相对; 以及形成在所述公共电极与所述第一电极面对所述压电片的区域上的吸附层,以吸附待感测的物质。
    • 5. 发明申请
    • Sensing instrument
    • 感应仪器
    • US20090308142A1
    • 2009-12-17
    • US12311262
    • 2007-09-27
    • Naoki OnishiHiroyuki KukitaShunichi Wakamatsu
    • Naoki OnishiHiroyuki KukitaShunichi Wakamatsu
    • G01N5/02G01G3/16
    • G01N29/036G01N5/02G01N29/022G01N29/30G01N2291/0256G01R31/2829
    • In a sensing instrument using a quartz sensor on whose front surface an adsorption layer for adsorbing a substance to be sensed is formed and which changes in natural frequency by the adsorption of the substance to be sensed, the present invention has an object to quickly detect a trouble of the quartz sensor to prevent an operator from recognizing an incorrect measurement result.In the present invention, a level detecting circuit detecting a signal level of an oscillation output of an oscillator circuit is provided, and after the time for stabilization passes after the power-on time, a computer takes a level detection value therein to compare the signal level and a threshold value. Then, when the signal level is lower than the threshold value, the signal level is determined as abnormal and, for example, the abnormality notification is displayed on a display unit, whereby an operator is notified of the occurrence of the abnormality.
    • 在使用石英传感器的感测装置中,通过吸附待检测物质的表面形成吸附被检测物质的吸附层和固有频率的变化,本发明的目的是快速检测 石英传感器的故障,以防止操作者识别不正确的测量结果。 在本发明中,提供了检测振荡电路的振荡输出的信号电平的电平检测电路,并且在通电时间稳定的时间之后,计算机在其中进行电平检测值,以比较信号 水平和阈值。 然后,当信号电平低于阈值时,信号电平被确定为异常,并且例如,异常通知被显示在显示单元上,从而通知操作者异常的发生。
    • 7. 发明申请
    • SENSING INSTRUMENT
    • 感应仪器
    • US20100021346A1
    • 2010-01-28
    • US12311959
    • 2007-10-24
    • Shunichi WakamatsuMitsuaki KoyamaHiroyuki Kukita
    • Shunichi WakamatsuMitsuaki KoyamaHiroyuki Kukita
    • G01N33/53G01N5/02H01L41/08
    • G01N5/02H03H9/19
    • A sensing instrument includes: a reference sensor including a reference piezoelectric resonator not adsorbing a substance to be sensed; a reference oscillator circuit oscillating the reference piezoelectric resonator; a measuring unit receiving an oscillation output of a sensing oscillator circuit and an oscillation output of the reference oscillator circuit in a time-series manner to measure frequencies of the oscillation outputs of the oscillator circuits; and a data creator creating time-series data of a difference between a frequency in a sensing sensor and a frequency in the reference sensor, based on the frequencies of the oscillation outputs of the oscillator circuits obtained by the measuring unit. Therefore, a frequency changed due to a factor other than the adsorption of the substance to be sensed is cancelled.
    • 感测仪器包括:参考传感器,其包括不吸附待检测物质的参考压电谐振器; 参考振荡器电路振荡参考压电谐振器; 测量单元,其以时间序列方式接收感测振荡器电路的振荡输出和参考振荡器电路的振荡输出,以测量振荡器电路的振荡输出的频率; 以及数据创建器,基于由测量单元获得的振荡器电路的振荡输出的频率,创建感测传感器中的频率与参考传感器中的频率之间的差异的时间序列数据。 因此,取消了除了被检测物质的吸附以外的因素而变化的频率。
    • 8. 发明申请
    • Sensing instrument
    • 感应仪器
    • US20090273335A1
    • 2009-11-05
    • US12311261
    • 2007-09-27
    • Naoki OnishiHiroyuki KukitaShunichi Wakamatsu
    • Naoki OnishiHiroyuki KukitaShunichi Wakamatsu
    • G01N27/00
    • G01N29/022G01N5/02G01N29/036G01N29/36G01N29/42G01N29/4427G01N2291/0255G01N2291/0256G01N2291/0426
    • In adopting a structure in which an oscillator circuit unit and an instrument main body including a measuring unit are separately formed in a sensing instrument measuring the concentration of or determining the presence/absence of a substance to be sensed by using a quartz sensor, the present invention has an object to enable the instrument main body side to know an oscillation frequency of the connected oscillator circuit unit.As a concrete solving means, a plurality of band-pass filters having pass characteristics corresponding to oscillation frequencies of the oscillator circuits respectively are provided in the instrument main body side to sort frequency signals, it is determined whether or not levels of the sorted frequency signals are equal to or higher than a threshold value, and a switching unit is controlled so as to connect a channel having a signal level equal to or higher than the threshold value to the measuring unit, and a reference frequency used in the measuring unit, for instance, is selected according to the frequency of the frequency signal corresponding to this channel.
    • 采用在通过使用石英传感器测量待检测物质的浓度或存在/不存在的感测装置中分别形成振荡器电路单元和包括测量单元的仪器主体的结构时,本发明 本发明的目的是使仪器主体侧能够知道连接的振荡器电路单元的振荡频率。 作为具体的解决方案,在仪器主体侧分别设置多个具有与振荡电路的振荡频率相对应的通过特性的带通滤波器,对频率信号进行分频,判定分频频率信号的电平 等于或高于阈值,并且控制切换单元以将具有等于或高于阈值的信号电平的信道连接到测量单元,以及在测量单元中使用的参考频率,用于 根据与该信道对应的频率信号的频率来选择。
    • 9. 发明授权
    • Sensing device
    • 感应装置
    • US08454902B2
    • 2013-06-04
    • US13369506
    • 2012-02-09
    • Hiroyuki KukitaShunichi WakamatsuWakako Shinobu
    • Hiroyuki KukitaShunichi WakamatsuWakako Shinobu
    • G01N33/00
    • G01N29/022G01N29/036G01N2291/0255G01N2291/0256G01N2291/0427
    • A sensing device is configured that a first piezoelectric vibrator and a second piezoelectric vibrator, changing over a connection to an oscillation circuit, have the oscillation circuit in common, that an impedance of a conductive path including a first one-surface-side electrode constituting the first piezoelectric vibrator from the oscillation circuit and an impedance of a conductive path including a second one-surface-side electrode constituting the second piezoelectric vibrator from the oscillation circuit are uniform with each other, and that an impedance of a conductive path including a first other-surface-side electrode constituting the first piezoelectric vibrator from the oscillation circuit and an impedance of a conductive path including a second other-surface-side electrode constituting the second piezoelectric vibrator from the oscillation circuit are uniform with each other.
    • 感测装置被构造成:将与振荡电路的连接相切的第一压电振动器和第二压电振动器具有共振的振荡电路,包括构成第一压电振子的第一单面侧电极的导电路径的阻抗 来自振荡电路的第一压电振动器和包括构成第二压电振动器的第二单表面侧电极的导电路径的阻抗彼此相同,并且包括第一其他的导电路径的阻抗 从振荡电路构成第一压电振动器的表面侧电极和从振荡电路构成第二压电振动器的包括第二另一表面侧电极的导电路径的阻抗彼此一致。
    • 10. 发明申请
    • Sensing device
    • 感应装置
    • US20110316522A1
    • 2011-12-29
    • US13134866
    • 2011-06-20
    • Wakako ShinobuHiroyuki KukitaTomoya YoritaShunichi Wakamatsu
    • Wakako ShinobuHiroyuki KukitaTomoya YoritaShunichi Wakamatsu
    • G01R29/22
    • G01N5/02
    • To provide a sensing device that holds a piezoelectric sensor and a channel forming member placed on the sensor in a closely contacted state while maintaining a shape of space of a passage space formed inside the device. In a sensing device 1100 that senses a substance to be sensed based on a variation in an oscillation frequency caused by an absorption of the substance to be sensed in an absorption layer provided on a piezoelectric resonator 1720 of a piezoelectric sensor 1700, a holding member 1600 holds the piezoelectric sensor 1700 and a channel forming member 1730 that forms a passage space through which a sample fluid passes on an upper surface side of the sensor, in a vertically stacked state. A cover member 1510 is placed on the channel forming member 1730, and a pressing part 1350 which is raised/lowered by a first raising/lowering mechanism 1300 presses the cover member 1510 placed on the channel forming member 1730 downward with a previously set force.
    • 提供一种感测装置,其保持紧密接触状态下放置在传感器上的压电传感器和通道形成构件,同时保持形成在装置内部的通道空间的形状。 在感测装置1100中,基于由设置在压电传感器1700的压电谐振器1720上的吸收层中的被吸收物质的吸收引起的振荡频率的变化来感测待检测物质,保持部件1600 保持压电传感器1700和通道形成部件1730,其形成在垂直堆叠状态下样品流体在传感器的上表面侧通过的通道空间。 盖构件1510被放置在通道形成构件1730上,并且通过第一升降机构1300升高/降低的按压部1350以预先设定的力将向下设置在通道形成构件1730上的盖构件1510按压。