公开(公告)号：US06545751B2

公开(公告)日：2003-04-08

申请号：US09791736

申请日：2001-02-26

申请人： Sean Beliveau ,  Edward R. Barrientos ,  Yvan Beliveau ,  Thomas M. Hedges ,  Eric J. Lundberg ,  Edmund S. Pendleton ,  Timothy Pratt ,  Rick Slater ,  Michael J. Sobel

发明人： Sean Beliveau ,  Edward R. Barrientos ,  Yvan Beliveau ,  Thomas M. Hedges ,  Eric J. Lundberg ,  Edmund S. Pendleton ,  Timothy Pratt ,  Rick Slater ,  Michael J. Sobel

IPC分类号： G01B1126

CPC分类号： G01S5/16 ,  G01C15/002 ,  G01S1/70

摘要： An improved low cost theodolite position measurement system and process which is particularly useful in enabling a single operator to conveniently set up the system and calculate elevation (el) and azimuth (az) angle data. Only a single optical transmitter is positioned within a predetermined workspace thus significantly decreasing equipment costs and setup time. The single transmitter is positioned and leveled at a predetermined point in the workspace. In operation the single rotatably mounted transmitter head illuminates the workspace volume with a pair of spaced apart precalibrated fan beams which sweep the space and a periodically emitted reference strobe pulse. At least one optical receiver is selectively positionable within said workspace so that during each revolution of said single transmitter head said receiver receives a first position strike and a second position strike of said fan beams. To determine elevation angle data, tracker logic means responsive to said receiver determines a first tie interval separation between receiving said first position strike and said second position strike and calculation means for converting said first time separation interval into an elevation angle data. To determine an azimuth angle data said receiver receives a strobe pulse and a fan beam position strike, both of which are repeatedly transmitted with a known periodicity, determining a measure of time separation related to the strobe pulse and the position strike, and converting the measure of time separation into the azimuth angle data utilizing the known periodicity.

公开(公告)号：US5100229A

公开(公告)日：1992-03-31

申请号：US570268

申请日：1990-08-17

申请人： Eric Lundberg ,  Yvan Beliveau ,  Timothy Pratt

发明人： Eric Lundberg ,  Yvan Beliveau ,  Timothy Pratt

IPC分类号： G01C15/00 ,  G01S1/70 ,  G01S5/16

CPC分类号： G01C15/002 ,  G01S1/70 ,  G01S5/16

摘要： A spatial positioning apparatus providing three-dimensional position information and methods to utilize the position information for improved surveying, construction layout, equipment operations, manufacturing control and autonomous vehicle control is disclosed. The spatial positioning apparatus includes at least three, preferably four, fixed referent stations. A minimum of two, preferably three, of the fixed stations sweeps a spread laser beam horizontally across the site of interest. The remaining fixed station sweeps a spread beam vertically across the site of interest. A strobe signal is emitted from each fixed station when the rotation mechanism actuates a rotation datum. The spatial positioning apparatus also includes one or more portable position sensors. The portable position sensor includes a light sensitive detector, a computer, and a display. The x, y, z coordinates of the portable position sensor are obtained through a triangulation technique based on time marks received from each spread laser beam from the fixed stations and the rotation datum received from the strobe of each fixed station. Multiple portable position sensors for use in attitude information for productivity improvement for equipment and for control of autonomous vehicles are disclosed.

摘要翻译： 公开了一种提供三维位置信息的空间定位装置和利用位置信息进行改进的测量，施工布局，设备操作，制造控制和自主车辆控制的方法。 空间定位装置包括至少三个，优选四个固定的指示站。 至少两个，最好是三个固定站扫描一个传播的激光束横跨所关心的站点。 剩余的固定站扫描一个扩展光束垂直穿过感兴趣的位置。 当旋转机构启动旋转基准时，从每个固定站发出选通信号。 空间定位装置还包括一个或多个便携式位置传感器。 便携式位置传感器包括光敏检测器，计算机和显示器。 便携式位置传感器的x，y，z坐标通过基于从固定站的每个扩展激光束接收的时间标记和从每个固定站的选通接收到的旋转数据的三角测量技术获得。 公开了用于姿态信息的多个便携式位置传感器，用于设备的生产率提高和自动车辆的控制。