-
公开(公告)号：US5048320A
公开(公告)日：1991-09-17
申请号：US423475
申请日：1989-11-07
IPC分类号： G01M7/08
CPC分类号： G01M7/08
摘要： A method of inspection of structures in which a hammer capable of imparting a non-destructive impact to an object to be inspected and provided with a pressure sensor or an acceleration sensor is hit against the object and, from a signal then put out, a processed signal of the time during which the hammer is in contact with the object or of the waveform signal during such time is displayed, apparatus provided with a signal processing device for the measurement of the above time, and apparatus provided with a device for removing an impact driving force responsive to a signal put out when the hammer contacts the object, for the measurement.
摘要翻译： PCT No.PCT / JP88 / 00092 Sec。 371日期：1989年11月7日 102（e）日期1989年11月7日PCT提交1988年2月2日PCT公布。 公开号WO89 / 07249 日期：1989年8月10日。一种检查结构的方法，其中能够对待检查物体施加非破坏性冲击并具有压力传感器或加速度传感器的锤撞击物体，并且从 然后输出信号，显示在此期间锤子与物体接触的时间或波形信号的处理信号，设置有用于测量上述时间的信号处理装置的设备，以及设备 具有用于响应于当锤接触物体时放出的信号来消除冲击驱动力的装置，用于测量。
-
公开(公告)号：US5130711A
公开(公告)日：1992-07-14
申请号：US801445
申请日：1991-12-02
申请人： Noriaki Kimura , Kanji Murasawa , Chihiro Jyomuta , Masuo Konishi
发明人： Noriaki Kimura , Kanji Murasawa , Chihiro Jyomuta , Masuo Konishi
CPC分类号： H01Q21/062 , G01S7/024 , G01S7/411 , G01V3/12 , H01Q21/245 , G01S13/885
摘要： Subsurface target identification radar includes an antenna array, a rotary encoder, a radar controller, a polarization switching circuit, and transmitter and receiver circuits. The antenna array is constituted by dipole antennas having plane triangle elements. The antennas are disposed at angular intervals of 120.degree. with respect to a rotated symmetric point of the array. The rotary encoder generates a distance pulse every time the radar travels a presetted distance. The radar controller sequentially generates three switching pulses within one period on the basis of the distance pulse from the rotary encoder. The polarization switching circuit selects an arbitrary dipole antenna as a transmitting antenna from the antenna array, selects an arbitrary dipole antenna, other than the selected antenna, as a receiving antenna, and changes a combination of selected antennas every time the switching pulse is generated by the radar controller. The transmitter and receiver circuits transmit/receive electromagnetic waves through the selected antennas.
摘要翻译： 地下目标识别雷达包括天线阵列，旋转编码器，雷达控制器，偏振切换电路以及发射机和接收机电路。 天线阵列由具有平面三角形元件的偶极天线构成。 天线相对于阵列的旋转对称点以120°的角度间隔设置。 旋转编码器在每次雷达行驶预设距离时都会产生一个距离脉冲。 雷达控制器基于来自旋转编码器的距离脉冲在一个周期内顺序地产生三个切换脉冲。 极化开关电路从天线阵列中选择任意的偶极天线作为发送天线，选择除选定的天线以外的任意的偶极天线作为接收天线，并且在每次由 雷达控制器。 发射机和接收机电路通过所选天线发射/接收电磁波。
-
搜索结果
2 条记录 (耗时 0.027 秒)
