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    • 4. 发明申请
    • FAIL-SAFE FOR SHARED PIN
    • 失去安全的共享密码
    • WO2017173295A1
    • 2017-10-05
    • PCT/US2017/025418
    • 2017-03-31
    • TEXAS INSTRUMENTS INCORPORATEDTEXAS INSTRUMENTS JAPAN LIMITED
    • DUBEY, SumitAGARWAL, Nitin
    • H03K3/00
    • H02H3/20
    • In described examples, an integrated circuit IC (100A) provides an improved fail-safe signal (PKEEP2) to a module sharing a fail-safe pin at which a voltage can be greater than a voltage of an upper rail. The IC (100 A) includes: a first circuit segment (102, 104, 106) that receives a first fail-safe signal (PKEEP) and a first power-down signal (PWDN) and provides an intermediate signal (PWDNZ1), wherein the first fail-safe signal (PKEEP) indicates when the voltage at the fail-safe pin is greater than the upper rail, and the first power-down signal (PWDN) indicates when the module is powered down; and a second circuit segment (108, 110) connected to receive the intermediate signal (PWDNZ1) and to provide the improved fail-safe signal (PKEEP2) to the module.
    • 在所描述的示例中,集成电路IC(100A)向共享故障安全引脚的模块提供改进的故障安全信号(PKEEP2),在该模块处,电压可以大于 上部导轨。 IC(100A)包括:接收第一故障安全信号(PKEEP)和第一断电信号(PWDN)并提供中间信号(PWDNZ1)的第一电路段(102,104,106),其中 第一个故障安全信号(PKEEP)指示故障安全引脚上的电压何时大于上导轨,第一个掉电信号(PWDN)指示模块何时掉电; 和被连接以接收中间信号(PWDNZ1)并向模块提供改进的故障安全信号(PKEEP2)的第二电路段(108,110)。
    • 10. 发明申请
    • SPECTROGRAPHIC MATERIAL ANALYSIS USING MULTI-FREQUENCY INDUCTIVE SENSING
    • 使用多频感应感测的光谱材料分析
    • WO2016126989A1
    • 2016-08-11
    • PCT/US2016/016638
    • 2016-02-04
    • TEXAS INSTRUMENTS INCORPORATEDTEXAS INSTRUMENTS JAPAN LIMITED
    • REITSMA, George, Pieter
    • G01N27/90G01R27/00
    • G01N33/483A61B5/053A61B5/0531
    • In described examples, a multi-frequency inductive sensing system (10) can be used for spectrographic material analysis of a conductive target material (30) based on electrical impedance spectroscopy. An inductive senor (14) can be driven with an excitation current at multiple sensor excitation frequencies (ω) to project a time-varying magnetic field (16) into a sensing area (19) on the surface (31) of the target material, inducing eddy currents within the target material. The inductive sensor can be characterized by a sensor impedance Z(ω) as a function of the sensor excitation frequency (ω) and the resulting induced eddy currents. Multiple sensor impedance Zs(ω) measurements at the multiple sensor excitation frequencies (ω) can be determined, which represent electromagnetic properties of the target material (such as permittivity ε, permeability μ, and resistivity ρ), based on the induced eddy currents. The multiple sensor excitation frequencies (ω) and corresponding multiple sensor impedance Zs(ω) measurements can be selected for particular target penetration depths (t).
    • 在所描述的示例中,多频感应感测系统(10)可用于基于电阻抗谱的导电靶材料(30)的光谱材料分析。 感应传感器(14)可以以多个传感器激励频率(ω)的激励电流驱动,以将时变磁场(16)投射到目标材料的表面(31)上的感测区域(19)中, 在目标材料内引起涡流。 感应传感器的特征可以在于传感器阻抗Z(ω)与传感器激励频率(ω)和所产生的感应涡流有关。 可以基于感应的涡流来确定在多个传感器激励频率(ω)下的多传感器阻抗Zs(ω)测量,其表示目标​​材料的电磁特性(例如介电常数ε,磁导率μ和电阻率ρ)。 可以为特定的目标穿透深度(t)选择多个传感器激励频率(ω)和相应的多传感器阻抗Zs(ω)测量值。