公开(公告)号：US07135870B2

公开(公告)日：2006-11-14

申请号：US11119556

申请日：2005-05-02

申请人： Kim Mohajer ,  Edward McChesney Browne ,  Abbas Khajeh

发明人： Kim Mohajer ,  Edward McChesney Browne ,  Abbas Khajeh

IPC分类号： G01R27/04

CPC分类号： G01N22/00 ,  G01N33/2847 ,  G01R27/22

摘要： A method and apparatus are disclosed for determining the concentration of individual components within a fluid mixture by determining the permittivity of the individual components. The method and apparatus use a reference sensor and at least one measurement sensor positioned inside the same sensor device that is immersed in the fluid mixture to be measured. Signals, such as radio frequency or microwave, are sequentially transmitted at multiple, known, constant frequencies to and reflected from both the reference and measurement sensor(s). Permittivities of the individual components are determined from these transmitted and reflected signals and information about the concentration of the individual fluids and other compounds within the fluid mixture and the density of the fluid mixture are produced. Repetitive sampling and processing of these signals allow determination and real-time monitoring of the concentration of individual components within a mixture of fluids. The present invention provides self-calibration, accurate frequency maintenance and self-selection of an operating frequency range.

摘要翻译： 公开了一种用于通过确定各个部件的介电常数来确定流体混合物内各个部件的浓度的方法和装置。 该方法和装置使用参考传感器和位于同一传感器装置内部的至少一个测量传感器，该传感器装置浸没在要测量的流体混合物中。 诸如射频或微波之类的信号以多个已知的恒定频率被顺序传送到参考和测量传感器两者并从其反射。 根据这些透射和反射的信号以及关于流体混合物内的各种流体和其它化合物的浓度的信息以及流体混合物的密度产生单个组分的介电常数。 重复采样和处理这些信号可以确定和实时监测流体混合物内各个组分的浓度。 本发明提供工作频率范围的自校准，精确的频率维持和自选。

公开(公告)号：US20080263380A1

公开(公告)日：2008-10-23

申请号：US11738825

申请日：2007-04-23

申请人： Joseph Ernest Dryer ,  John David Lambert ,  Edward McChesney Browne

发明人： Joseph Ernest Dryer ,  John David Lambert ,  Edward McChesney Browne

IPC分类号： G06F1/12 ,  G06F13/42 ,  H04L7/00

CPC分类号： G06F1/14

摘要： A method is presented to improve the accuracy of time synchronization of data. The invention consists of a timing module compromising a GPS interface with ability controller-based timing standard, high speed inputs and outputs and an asynchronous interface to an external processor system. It attaches a time-stamp referenced to an absolute time standard to transitions on the high speed inputs and a means for delivering these time stamps referenced to the high speed input to a computer or network. Alternatively the computer or network can specify a high speed output and an absolute time for an output transition and the timing module can deliver the specified output transition at the specified absolute time. Compared to existing systems of time synchronization, it will improve the accuracy of the timed data from the current Ethernet tolerance of up to 5 milliseconds to a possible tolerance of 250 nanoseconds.

摘要翻译： 提出了一种提高数据时间同步精度的方法。 本发明包括一个定时模块，它利用基于能力控制器的定时标准，高速输入和输出以及与外部处理器系统的异步接口来影响GPS接口。 它附加了一个参考绝对时间标准的时间标记，用于高速输入上的转换，以及将参考高速输入的这些时间戳传送到计算机或网络的装置。 或者，计算机或网络可以指定高速输出和输出转换的绝对时间，并且定时模块可以在指定的绝对时间递送指定的输出转换。 与现有的时间同步系统相比，它将提高定时数据的准确性，从当前的以太网容限高达5毫秒到250纳秒的可能容限。