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    • 81. 发明申请
    • Thermal flowmeter of fluid
    • 流体热流量计
    • US20070125169A1
    • 2007-06-07
    • US10580112
    • 2003-11-20
    • Hiroshi NakanoMasamichi YamadaMasahiro MatsumotoIzumi WatanabeKeiji HanzawaKeiichi Nakada
    • Hiroshi NakanoMasamichi YamadaMasahiro MatsumotoIzumi WatanabeKeiji HanzawaKeiichi Nakada
    • G01F1/68
    • G01F1/6965G01F1/6845
    • A thermal air flowmeter having excellent temperature characteristics and improved measurement accuracy. The thermal air flowmeter comprises a temperature sensor disposed in a casing of the air flowmeter, a computing unit for correcting a flow rate detection voltage from a measuring element by using the temperature sensor, and heating temperature control means disposed in a temperature control circuit for performing temperature control of a heating resistor to vary a temperature rise of the heating resistor relative to an air temperature depending on the air temperature. Flow rate detection errors of the thermal air flowmeter caused by an overall temperature change and a temperature change on an intake passage wall surface can be corrected simultaneously and a thermal air flowmeter having superior measurement accuracy can be realized.
    • 具有优异的温度特性和改进的测量精度的热空气流量计。 热空气流量计包括设置在空气流量计的壳体中的温度传感器,用于通过使用温度传感器校正来自测量元件的流量检测电压的计算单元,以及设置在温度控制电路中的加热温度控制装置,用于执行 加热电阻器的温度控制以根据空气温度改变加热电阻器相对于空气温度的温度升高。 可以同时校正由总体温度变化和进气通道壁面上的温度变化引起的热空气流量计的流量检测误差,并且可以实现具有优异的测量精度的热空气流量计。
    • 82. 发明授权
    • Heating resistance flow rate measuring apparatus
    • 耐热流量测量装置
    • US07225669B2
    • 2007-06-05
    • US11283778
    • 2005-11-22
    • Masahiro MatsumotoMasamichi YamadaHiroshi NakanoIzumi WatanabeKeiji HanzawaKeiichi Nakada
    • Masahiro MatsumotoMasamichi YamadaHiroshi NakanoIzumi WatanabeKeiji HanzawaKeiichi Nakada
    • G01F1/68
    • G01F1/6845F02D41/187G01F1/692G01F1/696G01F1/699
    • A heating resistance flow rate measuring apparatus which can use a power source of an ECU in an automobile without requiring an expensive protective circuit and regulator. Heating of temperature detecting resistors themselves causes temperature changes on the windward and leeward sides, and these temperature changes depend on the amounts of heat generated by the temperature detecting resistors. The amounts of heat generated by the temperature detecting resistors depend on a voltage value of the ECU power source applied to the temperature detecting resistors, and an error is caused in a sensor output depending on a variation in the voltage of the ECU power source. Based on the finding that suppressing the amount of heat generated by the temperature detecting resistors is effective in avoiding the sensor output error caused depending on a variation in the output voltage of the ECU power source, means for suppressing the amount of heat generated by the temperature detecting resistors is disposed.
    • 一种能够在汽车中使用ECU的电源而不需要昂贵的保护电路和调节器的加热电阻流量测量装置。 温度检测电阻本身的加热引起迎风侧风和背风侧的温度变化,这些温度变化取决于温度检测电阻产生的热量。 由温度检测电阻器产生的热量取决于施加到温度检测电阻器的ECU电源的电压值,并且根据ECU电源的电压变化在传感器输出中引起误差。 基于这样的发现,抑制由温度检测电阻产生的热量对于避免根据ECU电源的输出电压的变化而导致的传感器输出误差是有效的,用于抑制由温度产生的热量的装置 设置检测电阻器。
    • 83. 发明申请
    • Sensor adjusting circuit
    • 传感器调节电路
    • US20060239063A1
    • 2006-10-26
    • US11430975
    • 2006-05-10
    • Masahiro MatsumotoSatoshi ShimadaSeikou SuzukiAkihiko SaitoAtsushi MiyazakiKeiji Hanzawa
    • Masahiro MatsumotoSatoshi ShimadaSeikou SuzukiAkihiko SaitoAtsushi MiyazakiKeiji Hanzawa
    • G11C11/00
    • G01D3/022G01D3/02
    • A sensor adjusting circuit for adjusting a digital sensor, whose circuit scale is small and which can maintain high accuracy in a wide adjustment range is provided. A sensor adjusting circuit for adjusting an analog input signal inputted from a sensor and outputting it as another analog output signal in accordance with a physical quantity to be sensed, comprises: a first analog-to-digital converter having an analog integrator (2) for integrating the analog input signal, a comparator (3) for comparing an output of the analog integrator with a predetermined value, and a D/A converter (7) for outputting an output of the comparator as the input signal; and a second digital-to-analog converter (5) for converting the output of the comparator and outputting it as the analog output signal.
    • 提供了一种用于调整数字传感器的传感器调节电路,其电路规模小并且可以在宽的调节范围内保持高精度。 一种传感器调节电路,用于调节从传感器输入的模拟输入信号,并根据要感测的物理量将其输出为另一个模拟输出信号,包括:第一模数转换器,具有模拟积分器(2),用于 积分模拟输入信号,比较器(3),用于将模拟积分器的输出与预定值进行比较;以及D / A转换器(7),用于输出比较器的输出作为输入信号; 以及用于转换比较器的输出并将其作为模拟输出信号输出的第二数模转换器(5)。
    • 84. 发明申请
    • Flowmeter and flowmeter system
    • 流量计和流量计系统
    • US20060217901A1
    • 2006-09-28
    • US11442158
    • 2006-05-30
    • Atsushi KankeMasahiro MatsumotoShinya IgarashiKeiji HanzawaKei Ueyama
    • Atsushi KankeMasahiro MatsumotoShinya IgarashiKeiji HanzawaKei Ueyama
    • G01F1/00
    • G01F1/6965G01F1/6845G01F1/696G01F1/72
    • In a thermal-type airflow meter that measures an intake airflow rate in an internal combustion engine of an automobile or the like, there has been a problem that pulsation errors caused by external fluctuations under the environment including a large pulsation and reverse flow in the intake valve are difficult to be reduced. In order to solve this problem, the invention provides a flowmeter comprising a detection element that outputs a non-linear signal corresponding to a flow rate, and a regulation means that regulates an output signal of the detection element for controlling. With this construction, the regulation means executes output regulation processing that regulates irregularities of the detection element in the output signal, and inequality linearization processing that regulates an average value of the output signal after the output regulation processing by means of regulating parameters.
    • 在测量汽车等的内燃机中的进气量的热式气流计中,存在由于在进气中具有大的脉动和反向流动的环境下的外部波动引起的脉动误差的问题 阀门难以减少。 为了解决这个问题,本发明提供了一种流量计,其包括:输出对应于流量的非线性信号的检测元件;以及调节装置,用于调节用于控制的检测元件的输出信号。 利用这种结构,调节装置执行调节输出信号中的检测元件的不规则性的输出调节处理,以及通过调节参数来调节输出调节处理之后的输出信号的平均值的不等式线性化处理。