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    Technique for detecting and predicting air filter condition
    2.
    发明授权
    Technique for detecting and predicting air filter condition 有权
    检测和预测空气过滤器状态的技术

    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

    IPC分类号： B01D46/00 ,  B01D46/46

    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。

    Charge loss detection and prognostics for multi-modular split systems
    3.
    发明授权
    Charge loss detection and prognostics for multi-modular split systems 有权
    多模块拆分系统的充电损失检测和预测

    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。

    Sensor fault diagnostics and prognostics using component model and time scale orthogonal expansions
    4.
    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。

    Refrigerant charge status indication method and device
    7.
    发明授权
    Refrigerant charge status indication method and device 失效
    制冷剂充电状态指示方法及装置

    公开(公告)号：US07610765B2

    公开(公告)日：2009-11-03

    申请号：US11025836

    申请日：2004-12-27

    申请人： Pengju Kang ,  Alan M. Finn ,  Sivakumar Gopalnarayanan ,  Dong Luo ,  Timothy P. Galante

    发明人： Pengju Kang ,  Alan M. Finn ,  Sivakumar Gopalnarayanan ,  Dong Luo ,  Timothy P. Galante

    IPC分类号： F25B49/00 ,  F25B45/00

    CPC分类号： F25B45/00 ,  F25B49/005 ,  F25B2345/001 ,  F25B2700/04 ,  F25B2700/2106 ,  F25B2700/21163

    摘要： A method and apparatus for determining the sufficiency of the refrigerant charge in an air conditioning system by use of temperature measurements. The temperature of the liquid refrigerant leaving the condenser coil and the outdoor temperature are sensed and representative electrical signals are generated. The electrical signals are converted to digital values that are than compared to predetermined optimal values to determine whether the system is properly charged with refrigerant. An appropriate LED is lighted to indicate that the system is undercharged, overcharged or properly charged. For non-TXV/EXV systems a third parameter i.e. the return air wet bulb temperature is also sensed and a representative digital value thereof is included in the comparison with the predetermined known values to determine if the charge is proper.

    摘要翻译： 一种用于通过使用温度测量来确定空调系统中的制冷剂充注的充足性的方法和装置。 检测离开冷凝器线圈的液体制冷剂的温度和室外温度，并产生代表性的电信号。 电信号被转换成与预定的最佳值相比的数字值，以确定系统是否用适当的制冷剂充电。 适当的LED指示灯亮起，表示系统电量不足，充电过多或正确充电。 对于非TXV / EXV系统，也检测第三参数，即返回空气湿球温度，并且其代表性数字值包括在与预定已知值的比较中，以确定电荷是否合适。

    Nuisance Alarm Filter
    8.
    发明申请
    Nuisance Alarm Filter 有权
    噪声报警滤波器

    公开(公告)号：US20080272902A1

    公开(公告)日：2008-11-06

    申请号：US11885814

    申请日：2005-03-15

    申请人： Pengju Kang ,  Alan M. Finn ,  Robert N. Tomastik ,  Thomas M. Gillis ,  Ziyou Xiong ,  Lin Lin ,  Pei-Yuan Peng

    发明人： Pengju Kang ,  Alan M. Finn ,  Robert N. Tomastik ,  Thomas M. Gillis ,  Ziyou Xiong ,  Lin Lin ,  Pei-Yuan Peng

    IPC分类号： G08B26/00

    CPC分类号： G08B29/183 ,  G08B13/19697 ,  G08B29/186

    摘要： An alarm filter (22) for use in a security system (14) to reduce the occurrence of nuisance alarms receives sensor signals (S1-Sn, Sv) from a plurality of sensors (18, 20) included in the security system (14). The alarm filter (22) produces an opinion output as a function of the sensor signals and selectively modifies the sensor signals as a function of the opinion output to produce verified sensor signals (S1′-Sn′).

    摘要翻译： 用于安全系统（14）中用于减少妨扰警报的发生的警报过滤器（22）接收传感器信号（S 1→N 2， v）包括在安全系统（14）中的多个传感器（18,20）。 报警过滤器（22）产生作为传感器信号的函数的意见输出，并且根据意见输出选择性地修改传感器信号以产生经验证的传感器信号（S 1 - S＆lt; SUB > n '）。