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    • 1. 发明授权
    • Arc detection using detailed and approximate coefficients from discrete wavelet transforms
    • 使用离散小波变换的详细和近似系数进行电弧检测
    • US08159793B2
    • 2012-04-17
    • US12341166
    • 2008-12-22
    • Scott Jeffrey HallJohn Kenneth HookerKonstantin Vladimir GrigoryanSriram Changali
    • Scott Jeffrey HallJohn Kenneth HookerKonstantin Vladimir GrigoryanSriram Changali
    • H02H3/00
    • H02H1/0015H02H1/0092
    • An apparatus for facilitating interruption of current in an electrical circuit is provided and includes a current sensing device in the electrical circuit to service an electrical load, the current sensing device being productive of an output signal representative of a load current passing therethrough, a detection unit, in signal communication with the current sensing device such that the output signal is received by the detection unit, the detection unit being configured and disposed to output a secondary signal based on the output signal, and a microcontroller to receive and to decompose the secondary signal into detailed and approximate coefficients, and to generate a trip signal for use in interrupting an operation of the electrical circuit when a current of the sensed load is above a predetermined threshold and the detailed and approximate coefficients cooperatively indicate that threshold conditions for trip signal generation are satisfied.
    • 提供一种用于促进电路中的电流中断的装置,并且包括用于维持电负载的电路中的电流感测装置,所述电流感测装置产生代表通过其的负载电流的输出信号,检测单元 与所述电流检测装置进行信号通信,使得所述输出信号由所述检测单元接收,所述检测单元被配置和设置为基于所述输出信号输出辅助信号,以及微控制器,用于接收和分解所述辅助信号 成为详细的和近似的系数,并且当感测负载的电流高于预定阈值时产生用于中断电路的操作的跳闸信号,并且详细和近似系数协同地指示用于跳闸信号产生的阈值条件是 满意。
    • 3. 发明申请
    • ARC DETECTION USING DETAILED AND APPROXIMATE COEFFICIENTS FROM DISCRETE WAVELET TRANSFORMS
    • 使用离散小波变换的详细和大致系数的弧检测
    • US20100157488A1
    • 2010-06-24
    • US12341166
    • 2008-12-22
    • Scott Jeffrey HallJohn Kenneth HookerKonstantin Vladimir GrigoryanSriram Changali
    • Scott Jeffrey HallJohn Kenneth HookerKonstantin Vladimir GrigoryanSriram Changali
    • H02H3/08
    • H02H1/0015H02H1/0092
    • An apparatus for facilitating interruption of current in an electrical circuit is provided and includes a current sensing device in the electrical circuit to service an electrical load, the current sensing device being productive of an output signal representative of a load current passing therethrough, a detection unit, in signal communication with the current sensing device such that the output signal is received by the detection unit, the detection unit being configured and disposed to output a secondary signal based on the output signal, and a microcontroller to receive and to decompose the secondary signal into detailed and approximate coefficients, and to generate a trip signal for use in interrupting an operation of the electrical circuit when a current of the sensed load is above a predetermined threshold and the detailed and approximate coefficients cooperatively indicate that threshold conditions for trip signal generation are satisfied.
    • 提供一种用于促进电路中的电流中断的装置,并且包括用于维持电负载的电路中的电流感测装置,所述电流感测装置产生代表通过其的负载电流的输出信号,检测单元 与所述电流检测装置进行信号通信,使得所述输出信号由所述检测单元接收,所述检测单元被配置和设置为基于所述输出信号输出辅助信号,以及微控制器,用于接收和分解所述辅助信号 成为详细的和近似的系数,并且当感测负载的电流高于预定阈值时产生用于中断电路的操作的跳闸信号,并且详细和近似系数协同地指示用于跳闸信号产生的阈值条件是 满意。
    • 5. 发明授权
    • Parallel arc detection using discrete wavelet transforms
    • 使用离散小波变换的平行弧检测
    • US08170816B2
    • 2012-05-01
    • US12344772
    • 2008-12-29
    • Sriram ChangaliJohn Kenneth HookerKonstantin V. GrigoryanScott Jeffrey Hall
    • Sriram ChangaliJohn Kenneth HookerKonstantin V. GrigoryanScott Jeffrey Hall
    • G01R31/00
    • H02H1/0015H02H1/0092H02H3/08
    • An apparatus to perform parallel arc fault current interruption (AFCI) is provided. The apparatus includes a current sensing device disposed in the electrical circuit, a detection unit configured to receive an output signal produced by the current sensing device and to output a secondary signal based on the output signal, a microcontroller coupled to the detection unit, configured to receive and to decompose the secondary signal via discrete wavelet transforms to thereby obtain discrete wavelet coefficients, to compute a sum of the discrete wavelet coefficients, and to compare the sum of the discrete wavelet coefficients to a predetermined threshold, and to generate a trip signal when the sensed load current is above a predetermined threshold and the sum of the discrete wavelet coefficients cooperatively indicate that predetermined threshold conditions are satisfied.
    • 提供了一种并行电弧故障电流中断(AFCI)的设备。 该装置包括设置在电路中的电流感测装置,检测单元,被配置为接收由电流感测装置产生的输出信号并基于输出信号输出次级信号;耦合到检测单元的微控制器,被配置为 通过离散小波变换接收和分解辅助信号,从而获得离散小波系数,以计算离散小波系数的和,并将离散小波系数的和与预定阈值进行比较,并产生跳闸信号,当 感测的负载电流高于预定阈值,并且离散小波系数的和协同地指示满足预定的阈值条件。
    • 6. 发明申请
    • PARALLEL ARC DETECTION USING DISCRETE WAVELET TRANSFORMS
    • 使用离散小波变换的并行弧检测
    • US20100165521A1
    • 2010-07-01
    • US12344772
    • 2008-12-29
    • Sriram CHANGALIJohn Kenneth HookerKonstantin V. GrigoryanScott Jeffrey Hall
    • Sriram CHANGALIJohn Kenneth HookerKonstantin V. GrigoryanScott Jeffrey Hall
    • H02H3/08
    • H02H1/0015H02H1/0092H02H3/08
    • An apparatus to perform parallel arc fault current interruption (AFCI). The apparatus includes a current sensing device disposed in the electrical circuit to sense an electrical load, the current sensing device configured to produce an output signal representative of a load current passing therethrough, a detection unit, in signal communication with the current sensing device and configured to receive the output signal produced by the current sensing device, the detection unit being configured and disposed to output a secondary signal based on the output signal, and a microcontroller coupled to the detection unit, being responsive to computer executable instructions which, when executed by the microcontroller, cause the microcontroller to receive and to decompose the secondary signal via discrete wavelet transforms to thereby obtain discrete wavelet coefficients, and to compute a sum of the discrete wavelet coefficients, and to compare the sum of the discrete wavelet coefficients to a predetermined threshold, and to generate a trip signal when the sensed load current is above a predetermined threshold and the sum of the discrete wavelet coefficients cooperatively indicate that predetermined threshold conditions for trip signal generation are satisfied
    • 一种执行并联电弧故障电流中断(AFCI)的设备。 该装置包括设置在电路中以感测电负载的电流感测装置,电流感测装置被配置为产生表示通过其中的负载电流的输出信号,检测单元,与电流感测装置进行信号通信并配置 为了接收由电流感测装置产生的输出信号,检测单元被配置和布置为基于输出信号输出辅助信号,以及耦合到检测单元的微控制器响应于计算机可执行指令,当被执行时 微控制器使得微控制器通过离散小波变换接收和分解辅助信号,从而获得离散小波系数,并计算离散小波系数的和,并将离散小波系数的和与预定阈值进行比较 并且当感测到的l产生跳闸信号 oad电流高于预定阈值,并且离散小波系数的和协同地指示满足用于跳闸信号产生的预定阈值条件