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    • 3. 发明授权
    • Pressure sensor
    • 压力传感器
    • US06843132B2
    • 2005-01-18
    • US10845196
    • 2004-05-14
    • Kentaro MizunoKouji TsukadaYoshiteru OmuraShoji HashimotoJiro Sakata
    • Kentaro MizunoKouji TsukadaYoshiteru OmuraShoji HashimotoJiro Sakata
    • G01L19/04G01L7/08G01L23/08
    • G01L23/10G01L23/18
    • A pressure sensor is realized wherein output error of sensor element can be reduced even in the case where the pressure sensor is utilized in high temperature conditions. A pressure sensor is provided with a housing 20, a diaphragm 24 that partitions the interior and the exterior of the housing 20, a sensor element 54 provided within the housing 20, output value of the sensor element 54 varying in accordance with force exerted thereupon, and a force transmitting rod 52 provided within the housing, the force transmitting rod 52 moving downwardly when a pressure is exerted upon the diaphragm 24, the force transmitting rod 52 thereby exerting force upon the sensor element 54. The diaphragm 24 has a central region 26 contacting with the force transmitting rod 52, and a surrounding region 27 surrounding the periphery of the central region 26 and connecting the central region 26 with the housing 20. The surrounding region 27, viewed cross-sectionally along the radius, is V-shaped or U-shaped, and cancels thermal expansion.
    • 实现了压力传感器,即使在高温条件下使用压力传感器的情况下也能够降低传感器元件的输出误差。 压力传感器设置有壳体20,隔离壳体20的内部和外部的隔膜24,设置在壳体20内的传感器元件54,传感器元件54的输出值根据施加在其上的力而变化, 以及设置在壳体内的力传递杆52,当施加压力施加到隔膜24上时,力传递杆52向下移动,力传递杆52从而对传感器元件54施加力。隔膜24具有中心区域26 与力传递杆52接触,以及围绕中心区域26的周边并将中心区域26与壳体20连接的周围区域27.沿着半径横截面地观察的周边区域27为V形或 U型,取消热膨胀。
    • 5. 发明授权
    • Stress measurement device and stress measurement method
    • 应力测量装置和应力测量方法
    • US07646190B2
    • 2010-01-12
    • US11727152
    • 2007-03-23
    • Kentaro MizunoShoji HashimotoHidenori MoriyaHiromichi Yasuda
    • Kentaro MizunoShoji HashimotoHidenori MoriyaHiromichi Yasuda
    • G01N19/00
    • G01L1/2281G01L9/065
    • A stress measurement device includes a current supply portion; a series circuit which is connected to the current supply portion and has a piezoresistive element that forms a single gauge resistance and a compensating diode that is connected in series to the piezoresistive element; and a voltage measuring portion that measures voltage between both ends of the series circuit. The single gauge resistance has a piezoresistive effect in which a resistance value changes according to applied stress, and a positive temperature characteristic in which the resistance value increases depending on an increase in temperature. The compensating diode is provided in a forward direction with respect to the current supply portion and has a negative temperature characteristic in which a voltage between an anode and a cathode of the compensating diode decreases depending on the increase in temperature.
    • 应力测量装置包括电流供应部分; 串联电路,其连接到电流供应部分,并具有形成单规格电阻的压阻元件和与压阻元件串联连接的补偿二极管; 以及测量串联电路的两端之间的电压的电压测量部。 单规格电阻具有压阻效应,其中电阻值根据施加的应力而变化,并且电阻值随着温度升高而增加的正温度特性。 补偿二极管相对于电流供给部分在正向方向上设置,并且具有负温度特性,其中补偿二极管的阳极和阴极之间的电压根据温度的升高而降低。
    • 7. 发明申请
    • Stress measurement device and stress measurement method
    • 应力测量装置和应力测量方法
    • US20070240518A1
    • 2007-10-18
    • US11727152
    • 2007-03-23
    • Kentaro MizunoShoji HashimotoHidenori MoriyaHiromichi Yasuda
    • Kentaro MizunoShoji HashimotoHidenori MoriyaHiromichi Yasuda
    • G01L1/00
    • G01L1/2281G01L9/065
    • A stress measurement device includes a current supply portion; a series circuit which is connected to the current supply portion and has a piezoresistive element that forms a single gauge resistance and a compensating diode that is connected in series to the piezoresistive element; and a voltage measuring portion that measures voltage between both ends of the series circuit. The single gauge resistance has a piezoresistive effect in which a resistance value changes according to applied stress, and a positive temperature characteristic in which the resistance value increases depending on an increase in temperature. The compensating diode is provided in a forward direction with respect to the current supply portion and has a negative temperature characteristic in which a voltage between an anode and a cathode of the compensating diode decreases depending on the increase in temperature.
    • 应力测量装置包括电流供应部分; 串联电路,其连接到电流供应部分,并具有形成单规格电阻的压阻元件和与压阻元件串联连接的补偿二极管; 以及测量串联电路的两端之间的电压的电压测量部。 单规格电阻具有压阻效应,其中电阻值根据施加的应力而变化,并且电阻值随着温度升高而增加的正温度特性。 补偿二极管相对于电流供给部分在正向方向上设置,并且具有负温度特性,其中补偿二极管的阳极和阴极之间的电压根据温度的升高而降低。
    • 10. 发明授权
    • Inverter generator
    • 变频器发电机
    • US08232777B2
    • 2012-07-31
    • US12504457
    • 2009-07-16
    • Shoji HashimotoKazufumi Muronoi
    • Shoji HashimotoKazufumi Muronoi
    • H02P11/00H02P9/00
    • H02M7/53873H02M5/4585H02P9/48H02P27/08H02P29/50H02P2101/45
    • In an inverter generator having an engine generator unit generating alternating current, a converter converting the alternating current to direct current, an inverter that converts the direct current to alternating current, an inverter driver that drives switching elements with a PWM signal generated using a reference sine wave of a desired output voltage waveform and a carrier and makes the alternating current to the alternating current of a predetermined frequency, the alternating current supplied to an electrical load is detected, gains Gn (n: 2, 3, 4, 5, 6, . . . m) of n-th harmonics of the reference sine wave and amplitudes An are calculated from the detected current, and the reference sine wave is corrected by a sum obtained by the calculated gains and amplitudes. With this, the reference sine wave is accurately corrected to reliably remove harmonic distortion components from the output voltage waveform.
    • 在具有产生交流电的发动机发电机单元的逆变器发电机中,将交流电转换为直流电的转换器,将直流转换为交流电的逆变器,使用参考正弦产生的PWM信号驱动开关元件的逆变器驱动器 所需输出电压波形和载波的波形,并使交流电流达到预定频率的交流电流,检测提供给电负载的交流电流,增益Gn(n:2,3,4,5,6, 根据检测到的电流计算参考正弦波和幅度An的n次谐波的... m),并且通过计算的增益和幅度获得的和来校正参考正弦波。 由此,精确地校正参考正弦波,以便可靠地从输出电压波形中去除谐波失真分量。