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公开(公告)号：US10222770B2
公开(公告)日：2019-03-05
申请号：US13678704
申请日：2012-11-16
发明人： Thomas B. Meagher , Gerald R. Creech , Philip J. Agar , Shelby A. Murrell , Ian David D. W. Jones
IPC分类号： G05B19/02 , G05B19/042 , G05B9/03
摘要： An output module comprises two management units each of which calculates the current demand for the module independently from one another. One management unit controls an output current, controller whilst the other unit monitors the current produced by the output current controller against an independently calculated demand. The output module has multiple output modules. In normal operation, each module provides a portion of the required output current, the total output current being equal to the sum of the currents output by each module. in the event of failure on one of the, modules, the other module or modules switch to providing the total current required and the failed module is switched to a fail safe mode by using an isolation circuit to switch off the output current from that module.
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公开(公告)号：US09182754B2
公开(公告)日：2015-11-10
申请号：US13678775
申请日：2012-11-16
IPC分类号： G05B15/02 , G06F7/02 , G05B19/02 , G05B19/042 , G05B9/03
CPC分类号： G05B19/02 , G05B9/03 , G05B19/0425 , G05B2219/24163 , G05B2219/24182 , G05B2219/24187 , G05B2219/24189
摘要： This invention relates to an apparatus and method for output current control in an Industrial Process Control System, The output module comprises two management units each of which calculates the current demand for the module independently from one another. One management unit controls an output current controller whilst the other unit monitors the current produced by the output current controller against an independently calculated demand. The output module has multiple output modules. However rather than one module providing a backup for the other modules, or alternating between use of each module, in normal operation, each module provides a portion of the required output current, the total output current being equal to the sum of the currents output by each module. In the event of failure on one of the modules, the other module or modules switch to providing the total current required.
摘要翻译： 本发明涉及工业过程控制系统中输出电流控制的装置和方法。输出模块包括两个管理单元，每个管理单元彼此独立地计算模块的当前需求。 一个管理单元控制输出电流控制器，而另一个单元监视由输出电流控制器产生的电流与独立计算的需求。 输出模块有多个输出模块。 然而，在正常操作中，每个模块提供所需输出电流的一部分，而不是一个模块为其它模块提供备用，或者在每个模块的使用之间交替使用，总输出电流等于由 每个模块。 在其中一个模块发生故障的情况下，其他模块或模块切换到提供所需的总电流。
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公开(公告)号：US20150103957A1
公开(公告)日：2015-04-16
申请号：US14504637
申请日：2014-10-02
发明人： Philip J. Agar , Alison Cooper
CPC分类号： H04L27/14 , H04L27/106 , H04L27/144 , H04L27/1563
摘要： A method for processing an electrical signal comprises receiving an electrical signal comprising a frequency modulated signal encoding digital data, sampling a first portion of the electrical signal to provide a first sample set, and determining an intermediate value from the first sample set. A first output value is selected from a plurality of stored output values based on the intermediate value, the output value indicating a frequency modulation encoded value within the first portion of the electrical signal. An indication of the obtained output value is output.
摘要翻译： 一种用于处理电信号的方法包括：接收包括编码数字数据的频率调制信号的电信号，对电信号的第一部分进行采样以提供第一采样集，以及从第一采样集确定中间值。 基于中间值从多个存储的输出值中选择第一输出值，该输出值指示电信号的第一部分内的频率调制编码值。 输出获得的输出值的指示。
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公开(公告)号：US20130131834A1
公开(公告)日：2013-05-23
申请号：US13678775
申请日：2012-11-16
IPC分类号： G05B19/02
CPC分类号： G05B19/02 , G05B9/03 , G05B19/0425 , G05B2219/24163 , G05B2219/24182 , G05B2219/24187 , G05B2219/24189
摘要： This invention relates to an apparatus and method for output current control in an Industrial Process Control System. The output module comprises two management units each of which calculates the current demand for the module independently from one another. One management unit controls an output current controller whilst the other unit monitors the current produced by the output current controller against an independently calculated demand. The output module has multiple output modules. However rather than one module providing a backup for the other modules, or alternating between use of each module, in normal operation, each module provides a portion of the required output current, the total output current being equal to the sum of the currents output by each module. In the event of failure on one of the modules, the other module or modules switch to providing the total current required.
摘要翻译： 本发明涉及工业过程控制系统中输出电流控制的装置和方法。 输出模块包括两个管理单元，每个管理单元彼此独立地计算模块的当前需求。 一个管理单元控制输出电流控制器，而另一个单元监视由输出电流控制器产生的电流与独立计算的需求。 输出模块有多个输出模块。 然而，在正常操作中，每个模块提供所需输出电流的一部分，而不是一个模块为其它模块提供备用，或者在每个模块的使用之间交替使用，总输出电流等于由 每个模块。 在其中一个模块发生故障的情况下，其他模块或模块切换到提供所需的总电流。
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公开(公告)号：US20200244494A1
公开(公告)日：2020-07-30
申请号：US16850378
申请日：2020-04-16
发明人： Philip J. Agar , Alison Cooper
IPC分类号： H04L27/14 , H04L27/156 , H04L27/10
摘要： A method for processing an electrical signal comprises receiving an electrical signal comprising a frequency modulated signal encoding digital data; sampling a first portion of the electrical signal to obtain a plurality of samples to obtain a first sample set; determining an index value from the first sample set by assigning a value to each sample in the first sample set based upon an amplitude of the sample; comparing the determined index value with a plurality of predetermined index values to identify a first output value from a plurality of predetermined output values, each of the predetermined index values corresponding to one of the plurality of predetermined output values; and outputting an indication of the output value. Each of the predetermined output values indicates a respective frequency modulation encoded value and the first output value indicates a frequency modulation encoded value within the first portion of the electrical signal.
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公开(公告)号：US09331682B2
公开(公告)日：2016-05-03
申请号：US14632204
申请日：2015-02-26
发明人： Philip J. Agar , Mitchell Couper
CPC分类号： H03K5/125 , G01R31/2829 , G05B23/0235 , G05B2219/23201 , H03K5/08 , H03K21/023 , H03K23/00
摘要： A method of monitoring an analog signal output from a sensor comprising comparing the amplitude of the analog signal to a first high and low threshold, setting a primary monitoring signal to a first value when the amplitude of the analog signal exceeds the first high threshold, setting the primary monitoring signal to a second value when the amplitude of the analog signal decreases below the first low threshold, comparing the amplitude of the analog signal to a second high and low threshold, setting a secondary monitoring signal to a first value when the amplitude of the analog signal exceeds the second high threshold, setting the secondary monitoring signal to a second value when the amplitude of the analog signal decreases below the second low threshold, comparing the primary and secondary monitoring signals and determining from the comparison whether an error exists with the monitoring of the analog signal.
摘要翻译： 一种监测从传感器输出的模拟信号的方法，包括将模拟信号的幅度与第一高低阈值进行比较，当模拟信号的幅度超过第一高阈值时，将初级监测信号设置为第一值，设置 当所述模拟信号的幅度降低到低于所述第一低阈值时，将所述主监视信号设置为第二值，将所述模拟信号的幅度与第二高低阈值进行比较，当所述模拟信号的振幅为 所述模拟信号超过所述第二高阈值，当所述模拟信号的幅度降低到所述第二低阈值以下时，将所述辅助监视信号设置为第二值，比较所述主要和次要监视信号，并从所述比较确定是否存在与 监控模拟信号。
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公开(公告)号：US11233683B2
公开(公告)日：2022-01-25
申请号：US16850378
申请日：2020-04-16
发明人： Philip J. Agar , Alison Cooper
IPC分类号： H04L27/14 , H04L27/156 , H04L27/10 , H04L27/144
摘要： A method for processing an electrical signal comprises receiving an electrical signal comprising a frequency modulated signal encoding digital data; sampling a first portion of the electrical signal to obtain a plurality of samples to obtain a first sample set; determining an index value from the first sample set by assigning a value to each sample in the first sample set based upon an amplitude of the sample; comparing the determined index value with a plurality of predetermined index values to identify a first output value from a plurality of predetermined output values, each of the predetermined index values corresponding to one of the plurality of predetermined output values; and outputting an indication of the output value. Each of the predetermined output values indicates a respective frequency modulation encoded value and the first output value indicates a frequency modulation encoded value within the first portion of the electrical signal.
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公开(公告)号：US20150263712A1
公开(公告)日：2015-09-17
申请号：US14632204
申请日：2015-02-26
发明人： Philip J. Agar , Mitchell Couper
CPC分类号： H03K5/125 , G01R31/2829 , G05B23/0235 , G05B2219/23201 , H03K5/08 , H03K21/023 , H03K23/00
摘要： A method of monitoring an analogue signal output from a sensor comprising comparing the amplitude of the analogue signal to a first high and low threshold, setting a primary monitoring signal to a first value when the amplitude of the analogue signal exceeds the first high threshold, setting the primary monitoring signal to a second value when the amplitude of the analogue signal decreases below the first low threshold, comparing the amplitude of the analogue signal to a second high and low threshold, setting a secondary monitoring signal to a first value when the amplitude of the analogue signal exceeds the second high threshold, setting the secondary monitoring signal to a second value when the amplitude of the analogue signal decreases below the second low threshold, comparing the primary and secondary monitoring signals and determining from the comparison whether an error exists with the monitoring of the analogue signal.
摘要翻译： 一种监测从传感器输出的模拟信号的方法，包括将模拟信号的幅度与第一高低阈值进行比较，当模拟信号的幅度超过第一高阈值时，将初级监测信号设置为第一值，设置 当所述模拟信号的幅度降低到低于所述第一低阈值时，所述主监视信号为第二值，将所述模拟信号的幅度与第二高低阈值进行比较，当所述模拟信号的振幅为 模拟信号超过第二高阈值，当模拟信号的幅度降低到低于第二低阈值时，将辅助监控信号设置为第二值，比较主要和次要监控信号，并从比较中确定是否存在与 监控模拟信号。
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