公开(公告)号：US07323673B1

公开(公告)日：2008-01-29

申请号：US11414383

申请日：2006-04-28

申请人： DuWain K. Ake ,  Ayman Hajmousa

发明人： DuWain K. Ake ,  Ayman Hajmousa

IPC分类号： G01J1/44 ,  H01J40/14 ,  H03F3/08

CPC分类号： G01J1/4257 ,  G01C15/006 ,  G01J1/4228 ,  G01J1/44

摘要： A modulated laser light detector that converts laser light energy into electrical signals which exhibit a frequency that is substantially the same as the laser light modulation frequency, in which these signals allow the detector unit to determine a position where the laser light is impacting upon a photodiode array. A superheterodyne receiver circuit is used to provide high gain at an improved signal-to-noise ratio to improve the range at which the modulated laser light signal can be reliably detected. Various types of signal detection circuits are available. Various processing algorithms are disclosed, including a Discrete Fourier Transform with a simplified computational algorithm for use with a low-power processor device.

摘要翻译： 一种调制激光检测器，其将激光光能转换成电信号，其呈现与激光调制频率基本相同的频率，其中这些信号允许检测器单元确定激光照射到光电二极管上的位置 数组。 超外差接收电路用于以提高的信噪比提供高增益，以提高可以可靠地检测调制的激光信号的范围。 各种类型的信号检测电路是可用的。 公开了各种处理算法，包括具有用于低功率处理器设备的简化计算算法的离散傅里叶变换。

公开(公告)号：US07012237B1

公开(公告)日：2006-03-14

申请号：US10695673

申请日：2003-10-29

申请人： DuWain K. Ake

发明人： DuWain K. Ake

IPC分类号： H03F3/08

CPC分类号： H03F3/08 ,  G01C15/006

摘要： A modulated laser light detector that converts laser light energy into electrical signals which exhibit a frequency that is substantially the same as the laser light modulation frequency, in which these signals allow the detector unit to determine a position where the laser light is impacting upon a photodiode array. A synchronous rectifier circuit is provided which, by use of a phase locked loop, converts a full-wave analog signal representative of the modulated laser energy into a half-wave analog signal, which is filtered and demodulated to generate a DC level that is indicative of the strength of the received laser light energy. At least two channels of these signals are used to determine the impacting position of the laser light energy.

摘要翻译： 一种调制激光检测器，其将激光光能转换成电信号，其呈现与激光调制频率基本相同的频率，其中这些信号允许检测器单元确定激光照射到光电二极管上的位置 数组。 提供了一种同步整流电路，其通过使用锁相环将表示调制的激光能量的全波模拟信号转换为半波模拟信号，该半波模拟信号被滤波和解调以产生指示的DC电平 的接收激光强度的能量。 这些信号的至少两个通道用于确定激光能量的冲击位置。

公开(公告)号：US5000564A

公开(公告)日：1991-03-19

申请号：US491227

申请日：1990-03-09

申请人： DuWain K. Ake

发明人： DuWain K. Ake

IPC分类号： G01C15/00

CPC分类号： G01C15/002

摘要： A laser beam three dimensional position measurement system includes a laser transmitter mounted at a stationary reference position at a work site and a receiver mounted on a mobile machine at the site. The transmitter produces a laser reference plane by sweeping a laser beam about the transmitter. The receiver includes two spaced apart laser beam detectors for measuring the horizontal angle of the incoming beam with respect to the face of the receiver at two spaced apart locations on the face of the receiver. The horizontal angles are used to determine the range of the receiver from the transmitter. The transmitter includes an azimuth device for providing signals to the receiver indicative of the azimuth angle at which the receiver is positioned with respect to a reference axis that extends from the transmitter. The receiver includes a decoder signal receiving device for receiving the angle signals from the transmitter in order to determine its azimuth angle.

摘要翻译： 激光束三维位置测量系统包括安装在工作现场的固定参考位置处的激光发射器和安装在现场的移动机器上的接收器。 发射器通过扫描发射器周围的激光束产生激光参考平面。 接收器包括两个间隔开的激光束检测器，用于在接收器的表面上的两个间隔开的位置处测量入射光束相对于接收器的面的水平角度。 水平角用于确定发射机接收机的范围。 发射机包括方位设备，用于向接收机提供指示接收机相对于从发射机延伸的参考轴定位的方位角的信号。 接收机包括一个解码器信号接收装置，用于接收来自发射机的角度信号，以确定其方位角。

公开(公告)号：US4830489A

公开(公告)日：1989-05-16

申请号：US898080

申请日：1986-08-20

申请人： Gary L. Cain ,  DuWain K. Ake ,  Ted L. Teach

发明人： Gary L. Cain ,  DuWain K. Ake ,  Ted L. Teach

IPC分类号： G01C15/00

CPC分类号： G01C15/004

摘要： A laser beam alignment system includes a transmitter which establishes a laser reference plane by continuously rotating a horizontal laser beam about the transmitter. A remotely located receiver senses the elevation of the laser reference plane and reflects a portion of the laser energy back to the transmitter where the reflected energy is employed to produce a signal indicative of the range of the receiver and its location with respect to a reference axis. The position of the receiver is thus established in three dimensions.

摘要翻译： 激光束对准系统包括发射器，其通过围绕发射器连续旋转水平激光束来建立激光参考平面。 远程接收器感测激光参考平面的高度并且将一部分激光能量反射回发射机，其中采用反射能量来产生指示接收机的范围及其相对于参考轴线的位置的信号 。 因此，接收机的位置在三维中建立。

公开(公告)号：US07838808B1

公开(公告)日：2010-11-23

申请号：US11881121

申请日：2007-07-25

申请人： DuWain K. Ake

发明人： DuWain K. Ake

IPC分类号： G01J1/44 ,  H01J40/14 ,  H03F3/08

CPC分类号： G01J1/4228 ,  G01C15/006 ,  G01J1/02 ,  G01J1/0214 ,  G01J1/0219 ,  G01J1/0271 ,  G01J1/4257 ,  G01J1/44 ,  G01J2001/4242

摘要： A modulated laser light detector that converts laser light energy into electrical signals which exhibit a frequency that is substantially the same as the laser light modulation frequency, in which these signals allow the detector unit to determine a position where the laser light is impacting upon a photodiode array. A superheterodyne receiver circuit is used to provide high gain at an improved signal-to-noise ratio to improve the range at which the modulated laser light signal can be reliably detected. Various types of signal detection circuits are available. Various processing algorithms are disclosed, including one which rejects laser light strikes that are due to reflections, rather than due to a direct strike from the laser transmitter.

摘要翻译： 一种调制激光检测器，其将激光光能转换成电信号，其呈现与激光调制频率基本相同的频率，其中这些信号允许检测器单元确定激光照射到光电二极管上的位置 数组。 超外差接收电路用于以提高的信噪比提供高增益，以提高可以可靠地检测调制的激光信号的范围。 各种类型的信号检测电路是可用的。 公开了各种处理算法，包括拒绝由于反射引起的激光光束的处理算法，而不是由于来自激光发射器的直接撞击。

公开(公告)号：US06263595B1

公开(公告)日：2001-07-24

申请号：US09299397

申请日：1999-04-26

申请人： DuWain K. Ake

发明人： DuWain K. Ake

IPC分类号： G05D102

CPC分类号： E02F3/435 ,  E02F9/264

摘要： An improved level indicating system is provided for use with excavating equipment based upon a family of laser light receivers. In a first embodiment, a laser receiver with a single “long” photocell is mounted directly on the dipperstick of an excavator in a position that is designed to intercept pulses of laser light being emitted by a rotating laser light transmitter, and an angle-sensing sensor is also mounted to the dipperstick. In a second embodiment, a laser receiver with two parallel “long” photocells is mounted directly on the dipperstick, in which the pair of photocells are of sufficient precision to determine the angle of the dipperstick. In a third embodiment, a laser receiver with two parallel photocells is mounted directly on the dipperstick on a “servo mast” that can be re-positioned along the length of the dipperstick. The movable photocells thus can be shorter in length than the “long” photocells used in the second embodiment. In a fourth embodiment, a laser receiver with two or more parallel photocells is mounted on an “electric mast” which can have its elevation changed. Rotation sensors are mounted to the pivot joints between the platform and boom, the boom and dipperstick, and the dipperstick and bucket, so as to provide a complete solution in detecting the digging level with respect to the laser plane of light.

摘要翻译： 提供了一种改进的液位指示系统，用于基于一系列激光接收器的挖掘设备。 在第一实施例中，具有单个“长”光电池的激光接收器直接安装在挖掘机的液压计上，该位置被设计成拦截由旋转激光发射器发射的激光的脉冲，以及角度感测 传感器也安装在dipperstick。 在第二实施例中，具有两个平行的“长”光电管的激光接收器直接安装在二把手上，其中一对光电池具有足够的精度来确定二手准确的角度。 在第三实施例中，具有两个平行光电管的激光接收器直接安装在可以沿着手柄长度重新定位的“伺服桅杆”上的叼纸器上。 因此，可移动光电管的长度可以比​​在第二实施例中使用的“长”光电池更短。 在第四实施例中，具有两个或更多个平行光电管的激光接收器安装在可以使其高度改变的“电动桅杆”上。 旋转传感器安装在平台和起重臂之间的枢轴接头处，悬臂和千斤顶以及铲斗和铲斗之间，以便提供相对于激光平面检测挖掘水平的完整解决方案。

公开(公告)号：US6133991A

公开(公告)日：2000-10-17

申请号：US192770

申请日：1998-11-16

申请人： DuWain K. Ake

发明人： DuWain K. Ake

IPC分类号： G01C15/00 ,  H01L31/0248 ,  G01C3/08 ,  G01B11/26 ,  H01L27/00

CPC分类号： G01C15/006 ,  H01L31/0248

摘要： An improved photocell configuration is provided to create a more accurate laser receiver that not only is very accurate and flexible in its operational capabilities, but also can greatly reduce the effect of rotational offset due to shading of the photocell. In one embodiment, a very long photocell is provided in which multiple split-cells are used to present a geometry that will tend to negate some of the effects of shading. The shading effects are minimized by having a different active photocell area along each vertical edge of the photocell. In another embodiment, a "segmented" photocell is used, in which the split-cell design of a long photocell is also divided into vertical segments. These segments can be re-configured so that alternating segments comprise a mirror image about the longitudinal of the long photocell. Such an arrangement tends to reduce the effect of rotational offset due to shading to an extremely small percentage of error. The segmented photocell configuration of the present invention is capable of being manufactured in "cell units" of relatively small length that can be stacked up next to one another to build a very long photocell. Each of the smaller segmented photocell structures can be manufactured using standard integrated circuit processing in lengths of less than two inches for ease of manufacture.

摘要翻译： 提供改进的光电池配置以创建更精确的激光接收器，其不仅在其操作能力方面非常精确和灵活，而且还可以大大降低由于光电池的阴影引起的旋转偏移的影响。 在一个实施例中，提供了非常长的光电池，其中多个分裂单元用于呈现将倾向于否定阴影的一些影响的几何形状。 通过在光电池的每个垂直边缘处具有不同的有源光电池区域来最小化阴影效应。 在另一实施例中，使用“分段”光电管，其中长光电池的分裂电池设计也被分成垂直段。 可以重新配置这些段，使得交替的段包括围绕长光电池的纵向的镜像。 这种布置趋向于将由于阴影引起的旋转偏移的影响降低到极小百分比的误差。 本发明的分段光电管结构能够以相对较小长度的“单元单元”制造，可以相互堆叠堆叠以形成非常长的光电管。 每个较小的分段光电池结构可以使用长度小于2英寸的标准集成电路处理来制造，以便于制造。

公开(公告)号：US5486690A

公开(公告)日：1996-01-23

申请号：US297116

申请日：1994-08-29

申请人： DuWain K. Ake

发明人： DuWain K. Ake

IPC分类号： G01C15/00 ,  H01J40/14 ,  G01C3/08

CPC分类号： G01C15/006

摘要： A laser light detector is provided which can be used to detect pulsed laser light that is produced by a rotating laser light source on a construction job site. The laser light detector provides an easily-read display which is indicative of the present level or elevation of the laser light detector with respect to the plane of rotating laser light. The laser light detector has a very large dynamic range, while maintaining a very good signal-to-noise ratio, and can, therefore, be used at both short and long distances from the rotating laser light source. The laser light detector is not dependent upon the energy level received of laser light, or by the spot size of laser light as it reaches the light detectors. The laser light detector is available with several options, including dead band adjustment and audible indication of the elevation.

摘要翻译： 提供了一种激光检测器，可用于检测在施工作业现场由旋转激光光源产生的脉冲激光。 激光检测器提供了一种易于读取的显示器，其表示激光检测器相对于旋转激光平面的当前水平或高度。 激光检测器具有非常大的动态范围，同时保持非常好的信噪比，并且因此可以在距离旋转激光光源的短距离和长距离处使用。 激光检测器不依赖于接收到的激光的能量水平，也不依赖于激光在到达光检测器时的光斑大小。 激光检测器有多种选择，包括死区调整和高程可听见的指示。

公开(公告)号：US4976538A

公开(公告)日：1990-12-11

申请号：US428624

申请日：1989-10-30

申请人： DuWain K. Ake

发明人： DuWain K. Ake

IPC分类号： G01C5/00 ,  G01B11/26 ,  G01C15/00

CPC分类号： G01C15/006

摘要： A device for detecting and displaying the relative position of a generally horizontal reference plane of light, even when partial shading of the device occurs, produces a linear response that is independent of spot size and energy distribution. The device includes a photodetector means having first and second interdigitated photodetector elements positioned adjacent each other on the device. The first and second interdigitated photodetector elements provide first and second detection signals, respectively. A circuit means, responsive to the photodetector means, determines the relative levels of the first and second detection signals such that the position of the reference plane of light with respect to the detector device is determined. A display means, responsive to the circuit means, provides an indication of the position of the reference plane of light with respect to the detector device.

摘要翻译： 用于检测和显示大致水平的参考平面光的相对位置的装置即使在发生器件的部分阴影的情况下也产生与光点大小和能量分布无关的线性响应。 该装置包括光电检测器装置，该装置具有在装置上彼此相邻定位的第一和第二叉指式光检测器元件。 第一和第二叉指式光电探测器元件分别提供第一和第二检测信号。 响应于光电检测器装置的电路装置确定第一和第二检测信号的相对电平，使得确定参考光的相对于检测器装置的位置。 响应于电路装置的显示装置提供相对于检测器装置的参考平面的位置的指示。

公开(公告)号：US4907874A

公开(公告)日：1990-03-13

申请号：US228465

申请日：1988-08-05

申请人： DuWain K. Ake

发明人： DuWain K. Ake

IPC分类号： G01C15/00

CPC分类号： G01C15/006

摘要： A device for detecting and displaying the relative position of a generally horizontal reference plane of light. even when partial shading of the device occures, includes a photodetector means having including first and second interdigitated photodetector elements positioned adjacent each other on the device. The first and second interdigitated photodetector element provide first and second detection signals, respectively. A circuit means, responsive to the photodetector means, for determines the relative levels of the first and second detection signals such that the position of the reference plane of light with respect to the detector device is determined. A display means, responsive to the circuit means, for provides an indication of the position of the referece plane of light with respect to the detector device.