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公开(公告)号：US07942258B2
公开(公告)日：2011-05-17
申请号：US12788421
申请日：2010-05-27
IPC分类号： G08B21/00
CPC分类号： B65G43/02 , G01M13/023
摘要： A digital processor for use in a conveyor belt rip detector, which provides excitation signals at a selected frequency to inverted and noninverted sensor loops on a conveyor belt and then detects corresponding received signals from the sensor loops. The digital processor then performs FFTs on the corresponding received signals to provide respective received signal frequency spectrums. Next magnitude and phase values of the selected frequency in the respective received signal frequency spectrums are used to determine a qualitative state of the sensor loops. The selected frequency has a lowest detected ambient noise level, and the magnitude value is a normalized magnitude value.
摘要翻译： 一种用于传送带撕裂检测器的数字处理器，其将所选频率的激励信号提供给传送带上的反相和非反相传感器环路，然后检测来自传感器环路的相应接收信号。 然后，数字处理器对相应的接收信号执行FFT，以提供相应的接收信号频谱。 使用各个接收信号频谱中所选频率的下一个幅值和相位值来确定传感器回路的定性状态。 所选择的频率具有最低的检测到的环境噪声水平，并且幅度值是归一化幅度值。
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公开(公告)号：US20100235113A1
公开(公告)日：2010-09-16
申请号：US12788421
申请日：2010-05-27
CPC分类号： B65G43/02 , G01M13/023
摘要： A digital processor for use in a conveyor belt rip detector, which provides excitation signals at a selected frequency to inverted and noninverted sensor loops on a conveyor belt and then detects corresponding received signals from the sensor loops. The digital processor then performs FFTs on the corresponding received signals to provide respective received signal frequency spectrums. Next magnitude and phase values of the selected frequency in the respective received signal frequency spectrums are used to determine a qualitative state of the sensor loops. The selected frequency has a lowest detected ambient noise level, and the magnitude value is a normalized magnitude value.
摘要翻译： 一种用于传送带撕裂检测器的数字处理器，其将所选频率的激励信号提供给传送带上的反相和非反相传感器环路，然后检测来自传感器环路的相应接收信号。 然后，数字处理器对相应的接收信号执行FFT，以提供相应的接收信号频谱。 使用各个接收信号频谱中所选频率的下一个幅值和相位值来确定传感器回路的定性状态。 所选择的频率具有最低的检测到的环境噪声水平，并且幅度值是归一化幅度值。
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公开(公告)号：US07740130B2
公开(公告)日：2010-06-22
申请号：US11421224
申请日：2006-05-31
IPC分类号： G08B21/00
CPC分类号： B65G43/02 , G01M13/023
摘要： A digital processor for use in a conveyor belt rip detector, which provides excitation signals at a selected frequency to inverted and noninverted sensor loops on a conveyor belt and then, detects corresponding received signals from the sensor loops. The digital processor then performs FFTs on the corresponding received signals to provide respective received signal frequency spectrums. Next magnitude and phase values of the selected frequency in the respective received signal frequency spectrums are used to determine a qualitative state of the sensor loops. The selected frequency has a lowest detected ambient noise level, and the magnitude value is a normalized magnitude value.
摘要翻译： 一种用于传送带撕裂检测器的数字处理器，其将所选频率的激励信号提供给传送带上的反相和非反相传感器环路，然后检测来自传感器环路的相应接收信号。 然后，数字处理器对相应的接收信号执行FFT，以提供相应的接收信号频谱。 使用各个接收信号频谱中所选频率的下一个幅值和相位值来确定传感器回路的定性状态。 所选择的频率具有最低的检测到的环境噪声水平，并且幅度值是归一化幅度值。
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