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1. 发明授权

US08271210B2 Method and apparatus for enhancing in-situ gas flow measurement performance 有权
公开(公告)号：US08271210B2
公开(公告)日：2012-09-18
申请号：US12634568
申请日：2009-12-09
申请人： Sherk Chung , James MacAllen Chalmers , Jialing Chen , Yi Wang , Paul Tran , Sophia Leonidovna Shtilman , Joseph R. Monkowski
发明人： Sherk Chung , James MacAllen Chalmers , Jialing Chen , Yi Wang , Paul Tran , Sophia Leonidovna Shtilman , Joseph R. Monkowski
IPC分类号： G06F1/34
CPC分类号： G01F15/061 , G01F1/88 , G01F15/04 , G01F15/043 , Y10T137/0324
摘要： An in-situ gas flow measurement controller measures the temperature and rate of pressure drop upstream from a flow control device (FCD). The controller samples the pressure and temperature data and applies the equivalent of a decimating filter to the data to produce filtered data at a slower sampling rate. The controller derives timestamps by counting ticks from the sampling clock of the A/D converter that is sampling the pressure at regular intervals to ensure the timestamps associated with the pressure samples are accurate and do not contain jitter that is associated with software clocks. The controller additionally normalizes the temperature reading to account for power supply fluctuations, filters out noise from the pressure and temperature readings, and excludes data during periods of instability. It calculates the gas flow rate accounting for possible non-linearities in the pressure measurements, and provides the computed gas flow measurement via one of many possible interfaces.

2. 发明授权

US08271211B2 Method and apparatus for enhancing in-situ gas flow measurement performance 有权
标题翻译：用于提高原位气流测量性能的方法和装置
公开(公告)号：US08271211B2
公开(公告)日：2012-09-18
申请号：US12634593
申请日：2009-12-09
申请人： Sherk Chung , James MacAllen Chalmers , Jialing Chen , Yi Wang , Paul Tran , Sophia Leonidovna Shtilman , Joseph R. Monkowski
发明人： Sherk Chung , James MacAllen Chalmers , Jialing Chen , Yi Wang , Paul Tran , Sophia Leonidovna Shtilman , Joseph R. Monkowski
IPC分类号： G01F1/34
CPC分类号： G01F15/046 , G01F1/34 , Y10T137/0324
摘要： An in-situ gas flow measurement controller measures the temperature and rate of pressure drop upstream from a flow control device (FCD). The controller samples the pressure and temperature data and applies the equivalent of a decimating filter to the data to produce filtered data at a slower sampling rate. The controller derives timestamps by counting ticks from the sampling clock of the A/D converter that is sampling the pressure at regular intervals to ensure the timestamps associated with the pressure samples are accurate and do not contain jitter that is associated with software clocks. The controller additionally normalizes the temperature reading to account for power supply fluctuations, filters out noise from the pressure and temperature readings, and excludes data during periods of instability. It calculates the gas flow rate accounting for possible non-linearities in the pressure measurements, and provides the computed gas flow measurement via one of many possible interfaces.
摘要翻译：原位气体流量测量控制器测量流量控制装置（FCD）上游的压降的温度和速率。控制器对压力和温度数据进行采样，并将等效的抽取滤波器应用于数据，以较慢的采样速率产生滤波数据。控制器通过对A / D转换器的采样时钟进行计数来计算时间戳，A / D转换器采样时间间隔采样压力，以确保与压力样本相关联的时间戳准确，并且不包含与软件时钟相关的抖动。控制器另外对温度读数进行标准化以考虑电源波动，从压力和温度读数滤除噪声，并在不稳定期间排除数据。它计算气体流量，考虑压力测量中可能的非线性，并通过许多可能的接口之一提供计算的气体流量测量。

3. 发明申请

US20110137583A1 METHOD AND APPARATUS FOR ENHANCING IN-SITU GAS FLOW MEASUREMENT PERFORMANCE 有权
公开(公告)号：US20110137583A1
公开(公告)日：2011-06-09
申请号：US12634629
申请日：2009-12-09
申请人： Sherk CHUNG , James MacAllen CHALMERS , Jialing CHEN , Yi WANG , Paul TRAN , Sophia Leonidovna SHTILMAN , Joseph R. MONKOWSKI
发明人： Sherk CHUNG , James MacAllen CHALMERS , Jialing CHEN , Yi WANG , Paul TRAN , Sophia Leonidovna SHTILMAN , Joseph R. MONKOWSKI
IPC分类号： G01F1/34
CPC分类号： G01F1/34 , G01F15/046 , Y10T137/0324
摘要： An in-situ gas flow measurement controller measures the temperature and rate of pressure drop upstream from a flow control device (FCD). The controller samples the pressure and temperature data and applies the equivalent of a decimating filter to the data to produce filtered data at a slower sampling rate. The controller derives timestamps by counting ticks from the sampling clock of the A/D converter that is sampling the pressure at regular intervals to ensure the timestamps associated with the pressure samples are accurate and do not contain jitter that is associated with software clocks. The controller additionally normalizes the temperature reading to account for power supply fluctuations, filters out noise from the pressure and temperature readings, and excludes data during periods of instability. It calculates the gas flow rate accounting for possible non-linearities in the pressure measurements, and provides the computed gas flow measurement via one of many possible interfaces.

4. 发明申请

US20110137582A1 METHOD AND APPARATUS FOR ENHANCING IN-SITU GAS FLOW MEASUREMENT PERFORMANCE 有权
公开(公告)号：US20110137582A1
公开(公告)日：2011-06-09
申请号：US12634593
申请日：2009-12-09
申请人： Sherk Chung , James MacAllen Chalmers , Jialing Chen , Yi Wang , Paul Tran , Sophia Leonidovna Shtilman , Joseph R. Monkowski
发明人： Sherk Chung , James MacAllen Chalmers , Jialing Chen , Yi Wang , Paul Tran , Sophia Leonidovna Shtilman , Joseph R. Monkowski
IPC分类号： G01F1/34
CPC分类号： G01F15/046 , G01F1/34 , Y10T137/0324
摘要： An in-situ gas flow measurement controller measures the temperature and rate of pressure drop upstream from a flow control device (FCD). The controller samples the pressure and temperature data and applies the equivalent of a decimating filter to the data to produce filtered data at a slower sampling rate. The controller derives timestamps by counting ticks from the sampling clock of the A/D converter that is sampling the pressure at regular intervals to ensure the timestamps associated with the pressure samples are accurate and do not contain jitter that is associated with software clocks. The controller additionally normalizes the temperature reading to account for power supply fluctuations, filters out noise from the pressure and temperature readings, and excludes data during periods of instability. It calculates the gas flow rate accounting for possible non-linearities in the pressure measurements, and provides the computed gas flow measurement via one of many possible interfaces.

5. 发明授权

US07937232B1 Data timestamp management 有权
标题翻译：数据时间戳管理
公开(公告)号：US07937232B1
公开(公告)日：2011-05-03
申请号：US11821810
申请日：2007-06-25
申请人： Paxton Ming Kai Chow , Vera Alexandrova Snowball , Barton George Lane, III , Sophia Leonidovna Shtilman , Chalee Asavathiratham , Abhijit Majumdar , Sherk Chung , Yi Wang , Paul Tran
发明人： Paxton Ming Kai Chow , Vera Alexandrova Snowball , Barton George Lane, III , Sophia Leonidovna Shtilman , Chalee Asavathiratham , Abhijit Majumdar , Sherk Chung , Yi Wang , Paul Tran
IPC分类号： G01R29/02
CPC分类号： G05B21/02
摘要： Embodiments of the present invention relate to managing timestamps associated with received data. According to one embodiment, data is collected from a device that generates data at a specified rate, but which lacks a built-in clock. An accurate timestamp is assigned to the data by first taking an absolute timestamp from a reference clock, and then adding a calculated amount of time to each subsequent data point based on an estimate of the sampling frequency of the device. As the generated timestamp drifts from the actual reference clock time, the sampling frequency is re-estimated based on the amount of detected drift.
摘要翻译：本发明的实施例涉及管理与接收到的数据相关联的时间戳。根据一个实施例，从以指定速率产生数据但是缺少内置时钟的设备收集数据。通过首先从参考时钟获取绝对时间戳，然后基于设备的采样频率的估计，将计算出的时间量加到每个后续数据点，从而将准确的时间戳分配给数据。随着生成的时间戳从实际参考时钟时间漂移，基于检测到的漂移量重新估计采样频率。

6. 发明授权

US08265888B2 Method and apparatus for enhancing in-situ gas flow measurement performance 有权
公开(公告)号：US08265888B2
公开(公告)日：2012-09-11
申请号：US12634629
申请日：2009-12-09
申请人： Sherk Chung , James MacAllen Chalmers , Jialing Chen , Yi Wang , Paul Tran , Sophia Leonidovna Shtilman , Joseph R. Monkowski
发明人： Sherk Chung , James MacAllen Chalmers , Jialing Chen , Yi Wang , Paul Tran , Sophia Leonidovna Shtilman , Joseph R. Monkowski
IPC分类号： G01F1/34
CPC分类号： G01F1/34 , G01F15/046 , Y10T137/0324
摘要： An in-situ gas flow measurement controller measures the temperature and rate of pressure drop upstream from a flow control device (FCD). The controller samples the pressure and temperature data and applies the equivalent of a decimating filter to the data to produce filtered data at a slower sampling rate. The controller derives timestamps by counting ticks from the sampling clock of the A/D converter that is sampling the pressure at regular intervals to ensure the timestamps associated with the pressure samples are accurate and do not contain jitter that is associated with software clocks. The controller additionally normalizes the temperature reading to account for power supply fluctuations, filters out noise from the pressure and temperature readings, and excludes data during periods of instability. It calculates the gas flow rate accounting for possible non-linearities in the pressure measurements, and provides the computed gas flow measurement via one of many possible interfaces.

7. 发明申请

US20110137581A1 METHOD AND APPARATUS FOR ENHANCING IN-SITU GAS FLOW MEASUREMENT PERFORMANCE 有权
标题翻译：用于增加现场气体流量测量性能的方法和装置
公开(公告)号：US20110137581A1
公开(公告)日：2011-06-09
申请号：US12634568
申请日：2009-12-09
申请人： Sherk CHUNG , James MacAllen Chalmers , Jialing Chen , Yi Wang , Paul Tran , Sophia Leonidovna Shtilman , Joseph R. Monkowski
发明人： Sherk CHUNG , James MacAllen Chalmers , Jialing Chen , Yi Wang , Paul Tran , Sophia Leonidovna Shtilman , Joseph R. Monkowski
IPC分类号： G01F1/34
CPC分类号： G01F15/061 , G01F1/88 , G01F15/04 , G01F15/043 , Y10T137/0324
摘要： An in-situ gas flow measurement controller measures the temperature and rate of pressure drop upstream from a flow control device (FCD). The controller samples the pressure and temperature data and applies the equivalent of a decimating filter to the data to produce filtered data at a slower sampling rate. The controller derives timestamps by counting ticks from the sampling clock of the A/D converter that is sampling the pressure at regular intervals to ensure the timestamps associated with the pressure samples are accurate and do not contain jitter that is associated with software clocks. The controller additionally normalizes the temperature reading to account for power supply fluctuations, filters out noise from the pressure and temperature readings, and excludes data during periods of instability. It calculates the gas flow rate accounting for possible non-linearities in the pressure measurements, and provides the computed gas flow measurement via one of many possible interfaces.
摘要翻译：原位气体流量测量控制器测量流量控制装置（FCD）上游的压降的温度和速率。控制器对压力和温度数据进行采样，并将等效的抽取滤波器应用于数据，以较慢的采样速率产生滤波数据。控制器通过对A / D转换器的采样时钟进行计数来计算时间戳，A / D转换器采样时间间隔采样压力，以确保与压力样本相关联的时间戳准确，并且不包含与软件时钟相关的抖动。控制器另外对温度读数进行标准化以考虑电源波动，从压力和温度读数滤除噪声，并在不稳定期间排除数据。它计算气体流量，考虑压力测量中可能的非线性，并通过许多可能的接口之一提供计算的气体流量测量。

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