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公开(公告)号：US20050247194A1
公开(公告)日：2005-11-10
申请号：US10840758
申请日：2004-05-06
申请人： Pengju Kang , Mohsen Farzad , Slaven Stricevic , Payman Sadegh , Alan Finn
发明人： Pengju Kang , Mohsen Farzad , Slaven Stricevic , Payman Sadegh , Alan Finn
CPC分类号： B01D46/0086 , B01D46/444 , B01D2273/30 , Y10S116/25
摘要： A method and system for detecting and predicting air filter condition for an air handling system operates by determining a system resistance to air flow. The system resistance is utilized to determine a detection statistic indicative of current filter condition and to predict remaining life of the air filter. The system resistance is determined using models that approximate the expected operation of the air handling system. The approximation is then compared to actual values to obtain a difference. Once the difference between the approximated value exceeds a threshold value, an alarm is initiated that is indicative of system resistance. The remaining air filter life is then determined by using historically gathered data, or by using a known degradation rate of the air filter. Once the remaining life of the air filter is estimated, replacement can be scheduled that would coincide with other maintenance.
摘要翻译： 用于检测和预测空气处理系统的空气过滤器状态的方法和系统通过确定系统对气流的阻力来操作。 系统电阻用于确定表示当前过滤条件的检测统计量，并预测空气过滤器的剩余寿命。 使用近似空气处理系统的预期操作的模型确定系统阻力。 然后将近似值与实际值进行比较以获得差异。 一旦近似值之间的差超过阈值，则启动指示系统电阻的报警。 然后通过使用历史收集的数据或通过使用空气过滤器的已知降解速率来确定剩余的空气过滤器寿命。 一旦估计空气过滤器的剩余寿命，可以安排与其他维护一致的更换。
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公开(公告)号：US07261762B2
公开(公告)日：2007-08-28
申请号：US10840758
申请日：2004-05-06
申请人： Pengju Kang , Mohsen Farzad , Slaven Stricevic , Payman Sadegh , Alan M. Finn
发明人： Pengju Kang , Mohsen Farzad , Slaven Stricevic , Payman Sadegh , Alan M. Finn
CPC分类号： B01D46/0086 , B01D46/444 , B01D2273/30 , Y10S116/25
摘要： A method and system for detecting and predicting air filter condition for an air handling system operates by determining a system resistance to air flow. The system resistance is utilized to determine a detection statistic indicative of current filter condition and to predict remaining life of the air filter. The system resistance is determined using models that approximate the expected operation of the air handling system. The approximation is then compared to actual values to obtain a difference. Once the difference between the approximated value exceeds a threshold value, an alarm is initiated that is indicative of system resistance. The remaining air filter life is then determined by using historically gathered data, or by using a known degradation rate of the air filter. Once the remaining life of the air filter is estimated, replacement can be scheduled that would coincide with other maintenance.
摘要翻译： 用于检测和预测空气处理系统的空气过滤器状态的方法和系统通过确定系统对气流的阻力来操作。 系统电阻用于确定表示当前过滤条件的检测统计量，并预测空气过滤器的剩余寿命。 使用近似空气处理系统的预期操作的模型确定系统阻力。 然后将近似值与实际值进行比较以获得差异。 一旦近似值之间的差超过阈值，则启动指示系统电阻的报警。 然后通过使用历史收集的数据或通过使用空气过滤器的已知降解速率来确定剩余的空气过滤器寿命。 一旦估计空气过滤器的剩余寿命，可以安排与其他维护一致的更换。
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公开(公告)号：US07159408B2
公开(公告)日：2007-01-09
申请号：US10900478
申请日：2004-07-28
申请人： Payman Sadegh , Mohsen Farzad , Alan M. Finn , Pengju Kang , Slaven Stricevic
发明人： Payman Sadegh , Mohsen Farzad , Alan M. Finn , Pengju Kang , Slaven Stricevic
IPC分类号： F25B1/00
CPC分类号： F25B49/005 , F25B2500/19 , F25B2600/19 , F25B2600/2513 , F25B2700/04
摘要： A method for detecting and predicting refrigerant level includes the steps of determining an estimated value for a parameter indicative of refrigerant level and comparing that estimated value to an actual value. The difference between the actual and estimated value provides a refrigerant charge indicator value. The charge indicator value is indicative of the amount of refrigerant contained within the system. A change value is combined with the charge indicator value to provide a prediction for the future value of the charge indicator value. This future value is determined based on a rate of change and charge indicator value over a selected period of time.
摘要翻译： 一种用于检测和预测制冷剂液位的方法包括以下步骤：确定指示制冷剂水平的参数的估计值，并将该估计值与实际值进行比较。 实际值和估计值之间的差值提供制冷剂充注指标值。 充电指示器值表示包含在系统内的制冷剂的量。 将变化值与充电指标值组合以提供充电指示器值的未来值的预测。 该未来值是根据所选时间段内的变化率和收费指标值确定的。
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4.发明申请Sensor fault diagnostics and prognostics using component model and time scale orthogonal expansions 有权传感器故障诊断和使用组件模型和时间尺度正交扩展的预测公开(公告)号：US20050251364A1
公开(公告)日：2005-11-10
申请号：US10840566
申请日：2004-05-06
申请人： Pengju Kang , Mohsen Farzad , Slaven Stricevic , Payman Sadegh , Alan Finn
发明人： Pengju Kang , Mohsen Farzad , Slaven Stricevic , Payman Sadegh , Alan Finn
CPC分类号： G05B9/02 , G05B2219/31359 , Y02P90/22
摘要： A method of diagnosing sensor faults for a heating, ventilation and air conditioning system includes the steps of creating a component model for a specific component within the system. The component model is created through the use of commonly available manufacturing data. Data within the system is input into the component model and compared to calculated and predicted values that are also calculated using the identical component models. Differences between the calculated and actual values is determined and compared to a threshold difference value. If the difference exceeds the threshold value, then a fault is detected. The specific type of sensor fault is determined using probability distribution analysis. Each type of sensor fault produces a different type of statistical deviation from normal distribution. By recognizing these patterns of deviations from the normal distribution, the specific type of fault such as electrical, intermittent or freezing of the sensor can be determined to provide initial information as to the severity and type of remedial action required.
摘要翻译： 诊断加热，通风和空调系统的传感器故障的方法包括为系统内的特定部件创建组件模型的步骤。 组件模型是通过使用常用的制造数据创建的。 将系统中的数据输入到组件模型中，并与使用相同组件模型计算的计算值和预测值进行比较。 确定计算值和实际值之间的差异，并与阈值差值进行比较。 如果差值超过阈值，则检测到故障。 使用概率分布分析确定传感器故障的具体类型。 每种类型的传感器故障都会产生与正态分布不同的统计偏差。 通过识别这些偏离正常分布的模式，可以确定传感器的电气，间歇或冻结的特定类型的故障，以提供所需补救措施的严重性和类型的初始信息。
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5.发明授权公开(公告)号：US07219506B2
公开(公告)日：2007-05-22
申请号：US10973009
申请日：2004-10-25
申请人： Pengju Kang , Mohsen Farzad , Alan Finn , Payman Sadegh , Slaven Stricevic
发明人： Pengju Kang , Mohsen Farzad , Alan Finn , Payman Sadegh , Slaven Stricevic
CPC分类号： F24F11/83 , F24F11/30 , F24F2110/10 , F24F2110/20 , F25B2500/19 , F25B2700/1931 , F25B2700/1933 , F25B2700/21151 , F25B2700/21152 , F25B2700/21172 , F25B2700/21174 , F25B2700/21175
摘要： The temperature of the air exiting an evaporator and the relative humidity of the air entering and exiting the evaporator can be calculated by using existing sensors in a vapor compression system. The temperature of the air exiting the evaporator is calculated by using the detected temperature of the air entering the evaporator, the saturation temperature of the air, and a bypass factor. The relative humidity of the air entering and exiting the evaporator are then estimated using a psychrometric chart. By using the existing sensors to determine the temperature of the air exiting the evaporator and the relative humidity of the air entering and exiting the evaporator, the load requirement of the vapor compression system can be calculated without employing additional sensors. The system capacity of the vapor compression system can be matched to the load requirement to allow the effective use of electric power.
摘要翻译： 离开蒸发器的空气的温度和进入和离开蒸发器的空气的相对湿度可以通过使用蒸气压缩系统中的现有传感器来计算。 通过使用检测到的进入蒸发器的空气的温度，空气的饱和温度和旁路因子来计算离开蒸发器的空气的温度。 进入和离开蒸发器的空气的相对湿度然后使用湿度图进行估计。 通过使用现有的传感器来确定离开蒸发器的空气的温度和进入和离开蒸发器的空气的相对湿度，可以在不使用附加传感器的情况下计算蒸气压缩系统的负载要求。 蒸汽压缩系统的系统容量可以与负载要求相匹配，以有效利用电力。
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6.发明授权Sensor fault diagnostics and prognostics using component model and time scale orthogonal expansions 有权传感器故障诊断和使用组件模型和时间尺度正交扩展的预测公开(公告)号：US07200524B2
公开(公告)日：2007-04-03
申请号：US10840566
申请日：2004-05-06
申请人： Pengju Kang , Mohsen Farzad , Slaven Stricevic , Payman Sadegh , Alan M. Finn
发明人： Pengju Kang , Mohsen Farzad , Slaven Stricevic , Payman Sadegh , Alan M. Finn
IPC分类号： G06F3/02
CPC分类号： G05B9/02 , G05B2219/31359 , Y02P90/22
摘要： A method of diagnosing sensor faults for a heating, ventilation and air conditioning system includes the steps of creating a component model for a specific component within the system. The component model is created through the use of commonly available manufacturing data. Data within the system is input into the component model and compared to calculated and predicted values that are also calculated using the identical component models. Differences between the calculated and actual values is determined and compared to a threshold difference value. If the difference exceeds the threshold value, then a fault is detected. The specific type of sensor fault is determined using probability distribution analysis. Each type of sensor fault produces a different type of statistical deviation from normal distribution. By recognizing these patterns of deviations from the normal distribution, the specific type of fault such as electrical, intermittent or freezing of the sensor can be determined to provide initial information as to the severity and type of remedial action required.
摘要翻译： 诊断加热，通风和空调系统的传感器故障的方法包括为系统内的特定部件创建组件模型的步骤。 组件模型是通过使用常用的制造数据创建的。 将系统中的数据输入到组件模型中，并与使用相同组件模型计算的计算值和预测值进行比较。 确定计算值和实际值之间的差异，并与阈值差值进行比较。 如果差值超过阈值，则检测到故障。 使用概率分布分析确定传感器故障的具体类型。 每种类型的传感器故障都会产生与正态分布不同的统计偏差。 通过识别这些偏离正常分布的模式，可以确定传感器的电气，间歇或冻结的特定类型的故障，以提供所需补救措施的严重性和类型的初始信息。
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7.发明申请公开(公告)号：US20060086111A1
公开(公告)日：2006-04-27
申请号：US10973009
申请日：2004-10-25
申请人： Pengju Kang , Mohsen Farzad , Alan Finn , Payman Sadegh , Slaven Stricevic
发明人： Pengju Kang , Mohsen Farzad , Alan Finn , Payman Sadegh , Slaven Stricevic
CPC分类号： F24F11/83 , F24F11/30 , F24F2110/10 , F24F2110/20 , F25B2500/19 , F25B2700/1931 , F25B2700/1933 , F25B2700/21151 , F25B2700/21152 , F25B2700/21172 , F25B2700/21174 , F25B2700/21175
摘要： The temperature of the air exiting an evaporator and the relative humidity of the air entering and exiting the evaporator can be calculated by using existing sensors in a vapor compression system. The temperature of the air exiting the evaporator is calculated by using the detected temperature of the air entering the evaporator, the saturation temperature of the air, and a bypass factor. The relative humidity of the air entering and exiting the evaporator are then estimated using a psychrometric chart. By using the existing sensors to determine the temperature of the air exiting the evaporator and the relative humidity of the air entering and exiting the evaporator, the load requirement of the vapor compression system can be calculated without employing additional sensors. The system capacity of the vapor compression system can be matched to the load requirement to allow the effective use of electric power.
摘要翻译： 离开蒸发器的空气的温度和进入和离开蒸发器的空气的相对湿度可以通过使用蒸气压缩系统中的现有传感器来计算。 通过使用检测到的进入蒸发器的空气的温度，空气的饱和温度和旁路因子来计算离开蒸发器的空气的温度。 进入和离开蒸发器的空气的相对湿度然后使用湿度图进行估计。 通过使用现有的传感器来确定离开蒸发器的空气的温度和进入和离开蒸发器的空气的相对湿度，可以在不使用附加传感器的情况下计算蒸气压缩系统的负载要求。 蒸汽压缩系统的系统容量可以与负载要求相匹配，以有效利用电力。
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公开(公告)号：US20060021362A1
公开(公告)日：2006-02-02
申请号：US10900478
申请日：2004-07-28
申请人： Payman Sadegh , Mohsen Farzad , Alan Finn , Pengju Kang , Slaven Stricevic
发明人： Payman Sadegh , Mohsen Farzad , Alan Finn , Pengju Kang , Slaven Stricevic
CPC分类号： F25B49/005 , F25B2500/19 , F25B2600/19 , F25B2600/2513 , F25B2700/04
摘要： A method for detecting and predicting refrigerant level includes the steps of determining an estimated value for a parameter indicative of refrigerant level and comparing that estimated value to an actual value. The difference between the actual and estimated value provides a refrigerant charge indicator value. The charge indicator value is indicative of the amount of refrigerant contained within the system. A change value is combined with the charge indicator value to provide a prediction for the future value of the charge indicator value. This future value is determined based on a rate of change and charge indicator value over a selected period of time.
摘要翻译： 一种用于检测和预测制冷剂液位的方法包括以下步骤：确定指示制冷剂水平的参数的估计值，并将该估计值与实际值进行比较。 实际值和估计值之间的差值提供制冷剂充注指标值。 充电指示器值表示包含在系统内的制冷剂的量。 将变化值与充电指标值组合以提供充电指示器值的未来值的预测。 该未来值是根据所选时间段内的变化率和收费指标值确定的。
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