公开(公告)号：EP2211194A1

公开(公告)日：2010-07-28

申请号：EP08845650.4

申请日：2008-10-29

申请人： Tokyo Institute of Technology

发明人： UEDA, Tomoaki ,  ABE, Masanori ,  NAKAGAWA, Takashi ,  TADA, Masaru ,  MIZUMOTO, Tetsuya ,  HANDA, Hiroshi ,  SANDHU, Adarsh ,  ARAKI, Kiyomichi

IPC分类号： G01R33/07

CPC分类号： G01R33/07

摘要： Provided is a highly sensitive sensor system that can improve the S/N ratio by use of an electronic circuit without complicating the sensor body or degrading temporal resolution. A broad spectrum sensor element outputs an electric signal corresponding to a detected physical quantity, the sensor driven by multiplying a carrier signal by m-sequence code. The spread spectrum signal, after phase adjustment, is used to demodulate the sensor output signal, which corresponds to the broad spread spectrum of the physical quantity. The electrical noise generated in the sensor is a broad spread spectrum and is suppressed by low-pass filtering so as to improve the S/N ratio.

摘要翻译： 提供了一种高灵敏度的传感器系统，其可以通过使用电子电路来提高S / N比，而不会使传感器体复杂化或降低时间分辨率。 宽频谱传感器元件输出对应于检测到的物理量的电信号，该传感器通过乘以载波信号由m序列码驱动。 相位调整后的扩频信号用于解调对应于物理量的广泛扩频的传感器输出信号。 在传感器中产生的电噪声是广泛的扩频，并通过低通滤波来抑制，以提高S / N比。