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    • 81. 发明授权
    • A/D Converter to convert an analog signal from a bridge circuit to a digital signal
    • A / D转换器将模拟信号从桥接电路转换为数字信号
    • US07755529B2
    • 2010-07-13
    • US12338875
    • 2008-12-18
    • Kazuo HasegawaHirohisa Suzuki
    • Kazuo HasegawaHirohisa Suzuki
    • H03M1/12
    • H03M3/34G01P15/12H03M3/356H03M3/43H03M3/462
    • An AD converter comprising: a delta-sigma-modulation circuit to output an analog signal from a bridge circuit as a quantized signal; a switch circuit to switch between a first state, where a first level voltage is applied to one terminal of the bridge circuit and a second level voltage different in level from the first level voltage is applied to the other terminal thereof, and a second state, where voltages opposite in level to those in the first state are applied thereto, based on a logic level of a control signal; and an up-down counter to increase a count value based on a rate of the quantized signal being one logic level, during a predetermined period, in the first state, and decrease the count value based on the rate, during the predetermined period, in the second state, the count value representing a digital signal according to the physical quantity.
    • 一种AD转换器,包括:Δ-Σ调制电路,用于将来自桥接电路的模拟信号作为量化信号输出; 在第一状态和第二状态之间进行切换,该第一状态向桥接电路的一个端子施加第一电平电压,另一端施加与第一电平电压不同的第二电平电压, 其中基于控制信号的逻辑电平对其施加与第一状态相反的电压电平; 以及升降计数器,用于在所述第一状态期间的预定时段期间,基于所述量化信号为一逻辑电平的速率来增加计数值,并且在所述预定时段期间,基于所述速率减少所述计数值 第二状态,计数值表示根据物理量的数字信号。
    • 82. 发明申请
    • TEMPERATURE SENSOR CIRCUIT
    • 温度传感器电路
    • US20100046580A1
    • 2010-02-25
    • US12509094
    • 2009-07-24
    • Kazuo Hasegawa
    • Kazuo Hasegawa
    • G01K7/00H01L37/00
    • G01K7/01
    • A temperature sensor circuit includes a band-gap reference voltage circuit. The resistor and diode-connected bipolar transistor of the band-gap reference voltage circuit are separated into a transistor-resistor series circuit and a transistor-diode series circuit. The transistor-resistor series circuit is configured such that an emitter of the bipolar transistor Q21 is connected to a power supply voltage terminal VCC, a collector thereof is grounded via the resistor R2. The transistor-diode series circuit is configured such that an emitter of the bipolar transistor Q20 is connected to the power supply voltage terminal VCC, a collector thereof is connected to a collector of the diode-connected bipolar transistor Q19, and an emitter of the diode-connected bipolar transistor is grounded. A voltage divider circuit 5 having a plurality of output terminals is connected to the transistor-resistor series circuit and the transistor-diode series circuit via first and second buffer circuits 3 and 4, respectively.
    • 温度传感器电路包括带隙基准电压电路。 带隙参考电压电路的电阻和二极管连接双极晶体管分为晶体管电阻串联电路和晶体管二极管串联电路。 晶体管电阻串联电路被配置为使得双极晶体管Q21的发射极连接到电源电压端子VCC,其集电极经由电阻器R2接地。 晶体管二极管串联电路被配置为使得双极晶体管Q20的发射极连接到电源电压端子VCC,其集电极连接到二极管连接的双极晶体管Q19的集电极,二极管的发射极 连接的双极晶体管接地。 具有多个输出端子的分压器电路5分别经由第一和第二缓冲电路3和4连接到晶体管电阻器串联电路和晶体管二极管串联电路。
    • 83. 发明授权
    • Capacitive sensor
    • 电容传感器
    • US06823747B2
    • 2004-11-30
    • US10376751
    • 2003-02-28
    • Kazuo HasegawaKatsuyuki IshiguroYasuichi OnoDaiichi Hashimoto
    • Kazuo HasegawaKatsuyuki IshiguroYasuichi OnoDaiichi Hashimoto
    • G01L126
    • G01C9/06G01C2009/062
    • A capacitive sensor includes a retaining member, an intermediate member retained by the retaining member such that the intermediate member can rotate around a first axis, a movable member retained by the intermediate member such that the movable member can rotate around a second axis which is perpendicular to the first axis, a weight provided on the movable member, a movable electrode unit consisting of one or more electrodes which is provided on the movable member, and a board on which a fixed electrode unit consisting of one or more electrodes is provided such that the fixed electrode unit faces the movable electrode unit. At least one of the movable electrode unit and the fixed electrode unit includes a plurality of electrodes, and capacitances between the one or more electrodes of the movable electrode unit and the one or more electrodes of the fixed electrode unit are detected.
    • 电容式传感器包括保持构件,由保持构件保持的中间构件,使得中间构件能够围绕第一轴线旋转;可移动构件,其被中间构件保持,使得可移动构件可围绕垂直于第二轴线的第二轴线旋转 设置在可动构件上的重物,由设置在可动构件上的一个或多个电极构成的可动电极单元和由一个或多个电极组成的固定电极单元的基板, 固定电极单元面对可动电极单元。 可动电极单元和固定电极单元中的至少一个包括多个电极,并且检测可动电极单元的一个或多个电极与固定电极单元的一个或多个电极之间的电容。
    • 90. 发明授权
    • Photoelectric switch including synch timing signal emitter and detector
and photoelectric detector system using the same
    • 光电开关包括同步定时信号发射器和检测器和光电探测器系统使用相同
    • US5243182A
    • 1993-09-07
    • US847976
    • 1992-03-05
    • Hisashi MurataKazuo HasegawaHironobu WatanabeIkuo Ouchi
    • Hisashi MurataKazuo HasegawaHironobu WatanabeIkuo Ouchi
    • H03K17/16H03K17/94
    • H03K17/16H03K17/943
    • This invention relates to a photoelectric switch and a photoelectric detector for detecting the presence or absence of an object by using a light, and more particularly to prevention of mutual interference in the case of using a plurality of photoelectric switches. For example, an LED in a light emitting unit intermittently emits a sensing light at the timing of an output pulse from a pulse generator. The resultant pulse is divided in frequency by a frequency divider and then delayed by a one-shot circuit. At the timing of an output pulse from the one-shot circuit, another LED emits a transmission light to a photoelectric switch at next stage. Therefore, the transmission light is always delayed from the sensing light. The transmission light from the preceding photoelectric switch of the same construction is received by a photodiode, and an output pulse is outputted from a pulse generator in synchronism with a synch timing signal produced from the light receiving unit. Thus, the sensing lights from the respective photoelectric switches are emitted at the timings shifted from one another through delays effected by the one-shot circuits.
    • 本发明涉及光电开关和光电检测器,用于通过使用光来检测物体的存在或不存在,更具体地,涉及在使用多个光电开关的情况下防止相互干扰。 例如,发光单元中的LED在来自脉冲发生器的输出脉冲的定时间歇地发出感测光。 所得脉冲由分频器分频,然后由单触发电路延迟。 在来自单触发电路的输出脉冲的定时,另一LED在下一阶段向光电开关发射透射光。 因此,传输光总是从感测光延迟。 来自同一结构的前一光电开关的透射光由光电二极管接收,并且与由光接收单元产生的同步定时信号同步地从脉冲发生器输出输出脉冲。 因此,来自相应光电开关的感测光在通过由单触发电路实现的延迟之间彼此偏移的定时发射。