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    • 2. 发明专利
    • Σδ type a/d converter and angular velocity sensor using the same
    • SigmaDelta型A / D转换器和使用相同的角速度传感器
    • JP2008206134A
    • 2008-09-04
    • JP2007292830
    • 2007-11-12
    • Matsushita Electric Ind Co Ltd松下電器産業株式会社
    • NABEYA MASAYUKIMURAKAMI HIDEYUKIKAWAI TAKASHI
    • H03M3/02G01C19/56G01C19/5614
    • G01C19/56G01C19/5649H03M3/326H03M3/368H03M3/43H03M3/456H03M3/474H03M3/486H03M3/49
    • PROBLEM TO BE SOLVED: To provide a ΣΔ type A/D converter and an angular velocity sensor using the same in which an output characteristic is stabilized without varying output signals from a D/A converter and an integration circuit because of the effect of power supply voltage variation or temperature variation. SOLUTION: The ΣΔ type A/D converter comprises: an integrating device 62 for integrating charges outputted from an input switching device 44 and a D/A converter 48 and holding at least the two values of the integration, a comparator 63 for comparing at least the two values of the integration outputted from the integrating device 62 with a predetermined value, and an operation unit 73 for operating an output signal of the comparator 63 and having a differential operation unit 70 for operating the difference between at least the two comparison signals outputted from the comparator 63 in the operation unit 73. COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:为了提供一种ΣΔ型A / D转换器和使用其的角速度传感器,其中输出特性稳定而不改变来自D / A转换器和积分电路的输出信号,因为其效果 的电源电压变化或温度变化。 解决方案:ΣΔ型A / D转换器包括:积分装置62,用于积分从输入开关装置44输出的电荷和D / A转换器48,并且至少保持两个积分值;比较器63,用于 将从积分装置62输出的积分的至少两个值与预定值进行比较;以及操作单元73,用于操作比较器63的输出信号,并具有差分运算单元70,用于操作至少两个 在操作单元73中从比较器63输出的比较信号。(C)2008,JPO和INPIT
    • 3. 发明专利
    • Dynamic quantity sensor
    • 动态数量传感器
    • JP2008180671A
    • 2008-08-07
    • JP2007016019
    • 2007-01-26
    • Matsushita Electric Ind Co Ltd松下電器産業株式会社
    • NABEYA MASAYUKIKAWAI TAKASHI
    • G01L1/22G01P15/12
    • PROBLEM TO BE SOLVED: To provide a small sized dynamic quantity sensor which needs small area of additional substrate in the case of attaching a circuit constitution for adjusting the amplification degree of the external operation amplifier.
      SOLUTION: The dynamic quantity sensor to solve the problem is constituted such that a sensitivity adjusting resistance 29 and an adjusting electrode 26 are provided on a base plate 21, and also one end of the sensitivity adjusting resistance 29 is electrically connected with an output electrode 25, and the other end is connected with the adjusting electrode 26.
      COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:为了提供在附加用于调整外部运算放大器的放大度的电路结构的情况下需要小面积的附加基板的小尺寸动态量传感器。 解决方案:解决问题的动态量传感器构成为使得灵敏度调节电阻29和调节电极26设置在基板21上,灵敏度调节电阻29的一端与 输出电极25,另一端与调整电极26连接。版权所有(C)2008,JPO&INPIT
    • 4. 发明专利
    • Inertial force sensor
    • 惯性力传感器
    • JP2008128860A
    • 2008-06-05
    • JP2006315222
    • 2006-11-22
    • Matsushita Electric Ind Co Ltd松下電器産業株式会社
    • MURAKAMI HIDEYUKIKAWAI TAKASHI
    • G01C19/56G01C19/5614G01P15/14
    • PROBLEM TO BE SOLVED: To enhance detection accuracy as to an inertial force sensor used in various electronic apparatuses that perform attitude control, navigation, etc. of movable bodies such as airplanes, automobiles, robots, ships, and vehicles.
      SOLUTION: A drive circuit 2, constituting this inertial force sensor, is structured so as to AD-convert a monitor signal 11 outputted from a monitor electrode 8 to form a digital value of the monitor signal 11 and amplitude information; to compare the amplitude information with previously determined reference amplitude information, to arithmetically process the digital value of the monitor signal 11, based on this comparison information to convert it into a multi-bit signal; and to convert this multi-bit signal into a prescribed output signal to output it into a drive electrode 6.
      COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:为了提高用于各种执行诸如飞机,汽车,机器人,船舶和车辆的移动体的姿态控制,导航等的各种电子设备中使用的惯性力传感器的检测精度。 构成该惯性力传感器的驱动电路2构成为对从监视电极8输出的监视信号11进行AD转换,形成监视信号11的数字值和振幅信息; 将幅度信息与先前确定的参考幅度信息进行比较,基于该比较信息对监视信号11的数字值进行算术处理,将其转换为多位信号; 并将该多位信号转换为规定的输出信号,将其输出到驱动电极6.版权所有(C)2008,JPO&INPIT
    • 5. 发明专利
    • Density sensor
    • 密度传感器
    • JP2008058211A
    • 2008-03-13
    • JP2006237227
    • 2006-09-01
    • Matsushita Electric Ind Co Ltd松下電器産業株式会社
    • KAWAI TAKASHIMURAKAMI HIDEYUKI
    • G01N9/00
    • PROBLEM TO BE SOLVED: To accurately measure the density of a measuring object even if the peripheral temperature of a vibrator is changed.
      SOLUTION: The density sensor is constituted so as to be provided with a comparing circuit 31 for comparing the initial signal wave of an initial signal wave output means 26 for producing an initial signal of frequency lower than the resonance frequency of the vibrator 11, with the signal wave of an AM demodulator 30. By this constitution, even if the peripheral temperature of the vibrator is changed, the density of the measuring object is accurately measured.
      COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:即使振动器的周围温度改变,也能精确地测量测量对象的密度。 解决方案:密度传感器被构造成设置有比较电路31,用于比较初始信号波输出装置26的初始信号波,用于产生频率低于振动器11的共振频率的初始信号 利用AM解调器30的信号波。通过这种结构,即使振动器的周围温度改变,也可以精确地测量测量对象的密度。 版权所有(C)2008,JPO&INPIT
    • 6. 发明专利
    • Inclination angle sensor
    • INCLINATION角度传感器
    • JP2006258695A
    • 2006-09-28
    • JP2005078882
    • 2005-03-18
    • Matsushita Electric Ind Co Ltd松下電器産業株式会社
    • NOMURA KAZUHIROKAWAI TAKASHI
    • G01C9/06G01C9/10
    • PROBLEM TO BE SOLVED: To provide an inclination angle sensor for improving the measurement accuracy.
      SOLUTION: Especially in the inclination angle sensor, the side wall 6a section of a conductor case on which a spherical conductor 7 abuts is considered as an inclined plane expanding from the top surface 6b side of a conductor cover 6 toward a substrate 4 side. This constitution can improve measurement accuracy of the inclination angle sensor, and the sensor is useful in an application requiring high measurement accuracy, especially detection of roll-over of a vehicle.
      COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:提供一种用于提高测量精度的倾斜角度传感器。 解决方案:特别是在倾斜角传感器中,球形导体7邻接的导体壳体的侧壁6a部分被认为是从导体盖6的顶表面6b侧朝向基板4扩展的倾斜面 侧。 该结构可以提高倾斜角度传感器的测量精度,并且该传感器在需要高测量精度的应用中尤其是检测车辆的翻转是有用的。 版权所有(C)2006,JPO&NCIPI
    • 8. 发明专利
    • DISTORTION DETECTOR
    • JPH11257911A
    • 1999-09-24
    • JP5940798
    • 1998-03-11
    • MATSUSHITA ELECTRIC IND CO LTD
    • OTOBE TOSHIROKAWAI TAKASHIMOTOFUSA TOSHIHARUOGATA MOTOKIMIZUKAMI YUKIO
    • G06F3/033G01B7/16
    • PROBLEM TO BE SOLVED: To obtain a distortion detector having no characteristics that silver components in an electrode containing silver are imigrated to a distortion resistive element and output characteristics are deteriorated by a method wherein the distortion resistive element provided on an upper face of an insulation base is connected to an electrode containing a pair of silvers via a connection layer composed of a noble metal and having an opening part. SOLUTION: A pair of connection layers 15 comprising a noble metal such as gold, platinum, or the like is provided at a position of both ends of a distortion resistive element 14 on an upper face of an insulation base 11, and also is electrically connected to the distortion resistive element 14. An opening part 16 is provided at an approximately a center of the pair of connection layers 15 and an electrode 17 containing silver is connected onto the insulation base 11 via the opening part 16. When a shearing force is applied from an upper face of an end part of the insulation base 11, a bending moment occurs on the insulation base 11. A resistance value of the distortion resistive element changes by this bending moment. The change of this resistance value is output to an external computer, etc., by the electrode 17 containing silver to detect weighting loaded on the insulation base 11.
    • 9. 发明专利
    • PROCESSING CIRCUIT OF LOAD SENSOR
    • JPH10253469A
    • 1998-09-25
    • JP5582197
    • 1997-03-11
    • MATSUSHITA ELECTRIC IND CO LTD
    • KAWAI TAKASHIMOTOFUSA TOSHIHARUSATO YOSHIHIROOGATA MOTOKI
    • G01L1/22G06F3/033G06F3/038
    • PROBLEM TO BE SOLVED: To provide a load sensor giving no effect to the output signal of the sensor even when the power voltage fed to the sensor is fluctuated, by providing a reference signal generation section outputting a reference signal proportional to the power voltage and a selector selectively outputting the detection output from a detection section or the reference signal. SOLUTION: When a load is applied to an operation section, a control circuit section 40 selectively operates a selector 35 so that the detection output of a detection section 31 is inputted to the DC amplifier 37 of a DC amplifying circuit section 36. The output signal is converted by an A/D converter 39 and stored in the control circuit section 40. The control circuit section 40 selectively operates the selector 35 so that the reference signal of a reference signal generation section 34 is inputted to the amplifier 37 of the DC amplifying circuit section 36. The output signal is converted by the A/D converter 39 and stored in the control circuit section 40. When the power voltage of a power supply 33 is fluctuated by a temperature change, the control circuit section 49 corrects the fluctuation of the digital signal output of a load sensor caused by the fluctuation of the power voltage and outputs it to a host 41.