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    • 1. 发明授权
    • Passive, remote sensor
    • 被动,远程传感器
    • US07938010B2
    • 2011-05-10
    • US11975264
    • 2007-10-18
    • Dennis Peter VillanucciPeter Nicholas BaumIlya Schiller
    • Dennis Peter VillanucciPeter Nicholas BaumIlya Schiller
    • G01D5/32
    • G01H9/00
    • A passive, remote sensor including an optical subsystem for receiving electromagnetic radiation scattered off a surface. A detector is responsive to electromagnetic radiation received by the optical subsystem and generates a composite signal comprising a DC current component and an AC current component. A filter extracts the DC current component from the composite signal. A light emitting device is driven by the DC current component. A detector is responsive to the light emitting device and is connected to the first detector to subtract at least a portion of the DC component from the composite signal producing a modified signal. An amplifier is responsive to the modified signal detects vibrations of the surface to be detected.
    • 一种无源远程传感器,包括用于接收从表面散射的电磁辐射的光学子系统。 检测器响应于由光学子系统接收的电磁辐射,并产生包括直流电流分量和交流电流分量的复合信号。 滤波器从复合信号中提取直流电流分量。 发光器件由直流电流分量驱动。 检测器响应于发光器件并且连接到第一检测器以从复合信号中减去DC分量的至少一部分,从而产生修改的信号。 放大器响应于修改的信号检测要检测的表面的振动。
    • 2. 发明申请
    • Passive, remote sensor
    • 被动,远程传感器
    • US20080135762A1
    • 2008-06-12
    • US11975264
    • 2007-10-18
    • Dennis Peter VillanucciPeter Nicholas BaumIlya Schiller
    • Dennis Peter VillanucciPeter Nicholas BaumIlya Schiller
    • G01J5/02H01J40/00G01T1/00
    • G01H9/00
    • A passive, remote sensor including an optical subsystem for receiving electromagnetic radiation scattered off a surface. A detector is responsive to electromagnetic radiation received by the optical subsystem and generates a composite signal comprising a DC current component and an AC current component. A filter extracts the DC current component from the composite signal. A light emitting device is driven by the DC current component. A detector is responsive to the light emitting device and is connected to the first detector to subtract at least a portion of the DC component from the composite signal producing a modified signal. An amplifier is responsive to the modified signal detects vibrations of the surface to be detected.
    • 一种无源远程传感器,包括用于接收从表面散射的电磁辐射的光学子系统。 检测器响应于由光学子系统接收的电磁辐射,并产生包括直流电流分量和交流电流分量的复合信号。 滤波器从复合信号中提取直流电流分量。 发光器件由直流电流分量驱动。 检测器响应于发光器件并且连接到第一检测器以从复合信号中减去DC分量的至少一部分,从而产生修改的信号。 放大器响应于修改的信号检测要检测的表面的振动。