公开(公告)号：US20150053011A1

公开(公告)日：2015-02-26

申请号：US14527288

申请日：2014-10-29

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Shinichi Amemiya ,  Bruno Haider ,  Krishnakumar Sundaresan

IPC: H01L41/09 ,  G01N29/44 ,  G01N29/06

CPC classification number: H01L41/09 ,  B06B1/0207 ,  B06B1/0215 ,  G01N29/06 ,  G01N29/34 ,  G01N29/44 ,  G01N2291/048 ,  G01N2291/102

Abstract: An ultrasonic transducer driving circuit configured to supply an output current and/or an output voltage to an output line for driving an ultrasonic transducer is provided. The ultrasonic transducer driving circuit includes a first current discharge circuit configured to allow a current arising from electric charges accumulated in the ultrasonic transducer to flow from the output line to ground when the output line is at a positive voltage, and a second current discharge circuit configured to allow the current arising from the electric charges accumulated in the ultrasonic transducer to flow from ground to the output line when the output line is at a negative voltage. The first current discharge circuit and the second current discharge circuit are controlled based on the output current and/or the output voltage.

Abstract translation: 提供了一种超声波换能器驱动电路，其被配置为向用于驱动超声换能器的输出线提供输出电流和/或输出电压。 超声波换能器驱动电路包括：第一电流放电电路，被配置为当输出线处于正电压时允许从超声波换能器中累积的电荷产生的电流从输出线流向地，并且第二电流放电电路配置 当输出线处于负电压时，允许从超声波换能器中累积的电荷产生的电流从地流到输出线。 基于输出电流和/或输出电压来控制第一电流放电电路和第二电流放电电路。

公开(公告)号：US20140095102A1

公开(公告)日：2014-04-03

申请号：US13630939

申请日：2012-09-28

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Radislav Alexandrovich Potyrailo ,  Jeffrey Michael Ashe ,  Sm Shajed Hasan ,  Naresh Kesavan Rao ,  Krishnakumar Sundaresan

IPC: G06F15/00 ,  G01R27/02

CPC classification number: G01R27/28 ,  G01R31/2824

Abstract: An impedance analyzer is provided. The analyzer includes a signal excitation generator comprising a digital to analog converter, where a transfer function of the digital to analog converter from digital to analog is programmable. The impedance analyzer further includes a receiver comprising a low noise amplifier (LNA) and an analog to digital converter (ADC), where the LNA is a current to voltage converter; where the programmable digital to analog transfer function is implemented by a direct digital synthesizer (DDS) and a voltage mode digital to analog converter, or a digital phase locked loop (PLL), or both. Further, a multivariable sensor node having an impedance analyzer is provided. Furthermore, a multivariable sensor network having a plurality of multivariable sensor nodes is provided.

Abstract translation: 提供阻抗分析仪。 该分析器包括一个包括数模转换器的信号激励发生器，其中从数字到模拟的数模转换器的传递函数是可编程的。 该阻抗分析器还包括一个包括低噪声放大器（LNA）和模数转换器（ADC）的接收器，其中LNA是电流到电压转换器; 其中可编程数字到模拟传递功能由直接数字合成器（DDS）和电压模式数模转换器或数字锁相环（PLL）或两者实现。 此外，提供了具有阻抗分析器的多变量传感器节点。 此外，提供了具有多个多变量传感器节点的多变量传感器网络。

公开(公告)号：US20140091811A1

公开(公告)日：2014-04-03

申请号：US13630954

申请日：2012-09-28

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Radislav Alexandrovich Potyrailo ,  Jeffrey Michael Ashe ,  Sm Shajed Hasan ,  Naresh Kesavan Rao ,  Krishnakumar Sundaresan

IPC: G01R27/02

CPC classification number: G06K19/0717 ,  G06K19/0723 ,  G06K19/07749

Abstract: A method for multivariable measurements using a single-chip impedance analyzer includes providing a sensor, exposing the sensor to an environmental parameter, determining a complex impedance of the sensor over a measured spectral frequency range of the sensor, and monitoring at least three spectral parameters of the sensor.

Abstract translation: 使用单芯片阻抗分析仪进行多变量测量的方法包括提供传感器，将传感器暴露于环境参数，在传感器的测量光谱频率范围内确定传感器的复阻抗，以及监测至少三个光谱参数 传感器。