公开(公告)号：US20090237642A1

公开(公告)日：2009-09-24

申请号：US12405096

申请日：2009-03-16

申请人： Noriyuki Yoshida ,  Noboru Hirabayashi ,  Koji Nishida

发明人： Noriyuki Yoshida ,  Noboru Hirabayashi ,  Koji Nishida

IPC分类号： G01P3/36

CPC分类号： G01P3/366 ,  G01S7/4811 ,  G01S7/497 ,  G01S17/58

摘要： A velocimeter is disclosed that includes a plurality of photodetectors detecting scattered light in different directions, the light being emitted from a laser source and reflected on a moving object. The velocimeter includes an analog-to-digital conversion unit converting detection signals of the photodetectors, a velocity calculator calculating velocities of the moving object, an amplitude calculator calculating the amplitudes of the detection signals, a dropout detector detecting dropouts of the detection signals, a time keeper keeping detection times of the dropouts, a switching-time calculator calculating signal switching times, a storage memory storing the velocities, the amplitudes, and the signal switching times, and an output selector selecting one of the velocities stored in the storage memory based on the amplitudes and the signal switching times and outputting the selected velocity.

摘要翻译： 公开了一种测速仪，其包括检测不同方向上的散射光的多个光电检测器，该光源从激光源发射并在运动物体上反射。 速度计包括转换光电检测器的检测信号的模数转换单元，计算运动对象的速度的速度计算器，计算检测信号幅度的幅度计算器，检测检测信号的丢失的压差检测器， 时间保持器保持掉落的检测时间，切换时间计算器计算信号切换时间，存储存储速度，振幅和信号切换时间的存储存储器，以及选择存储在存储器存储器中的速度之一的输出选择器 在幅度和信号切换时间上输出所选择的速度。

公开(公告)号：US07834986B2

公开(公告)日：2010-11-16

申请号：US12405096

申请日：2009-03-16

申请人： Noriyuki Yoshida ,  Noboru Hirabayashi ,  Koji Nishida

发明人： Noriyuki Yoshida ,  Noboru Hirabayashi ,  Koji Nishida

IPC分类号： G01P3/36

CPC分类号： G01P3/366 ,  G01S7/4811 ,  G01S7/497 ,  G01S17/58

摘要： A velocimeter is disclosed that includes a plurality of photodetectors detecting scattered light in different directions, the light being emitted from a laser source and reflected on a moving object. The velocimeter includes an analog-to-digital conversion unit converting detection signals of the photodetectors, a velocity calculator calculating velocities of the moving object, an amplitude calculator calculating the amplitudes of the detection signals, a dropout detector detecting dropouts of the detection signals, a time keeper keeping detection times of the dropouts, a switching-time calculator calculating signal switching times, a storage memory storing the velocities, the amplitudes, and the signal switching times, and an output selector selecting one of the velocities stored in the storage memory based on the amplitudes and the signal switching times and outputting the selected velocity.

摘要翻译： 公开了一种测速仪，其包括检测不同方向上的散射光的多个光电检测器，该光源从激光源发射并在运动物体上反射。 速度计包括转换光电检测器的检测信号的模数转换单元，计算运动对象的速度的速度计算器，计算检测信号幅度的幅度计算器，检测检测信号的丢失的压差检测器， 时间保持器保持掉落的检测时间，切换时间计算器计算信号切换时间，存储存储速度，振幅和信号切换时间的存储存储器，以及选择存储在存储器存储器中的速度之一的输出选择器 在幅度和信号切换时间上输出所选择的速度。