公开(公告)号：US07849371B2

公开(公告)日：2010-12-07

申请号：US11921914

申请日：2006-06-12

申请人： Masahiro Ohishi ,  Yoshikatsu Tokuda ,  Fumio Ohtomo

发明人： Masahiro Ohishi ,  Yoshikatsu Tokuda ,  Fumio Ohtomo

IPC分类号： G06K5/04

摘要： In measuring a certain time lag between generations of two pulse signals, a time lag measuring device prevents errors in measurement results even with an error in two reference signals for measuring the time lag. The device measures a time lag between a start signal M1 and a stop signal M2 and includes a reference signal generating section 41 generating two reference signals S1, S2 having a phase difference π/2, and an amplitude detecting section 42 detects amplitudes A11, A12 and A21, A22 of the reference signals S1, S2 at generation timings for the start signal M1 and the stop signal M2, a phase difference detecting section 43 calculating a phase _ of the reference signals S according to each set of the amplitudes (A11, A12) and (A21, A22), and a correcting section 46 correcting the calculated phase using correction data for error correction in the reference signals S1, S2.

公开(公告)号：US20090235127A1

公开(公告)日：2009-09-17

申请号：US11921914

申请日：2006-06-12

申请人： Masahiro Ohishi ,  Yoshikatsu Tokuda ,  Fumio Ohtomo

发明人： Masahiro Ohishi ,  Yoshikatsu Tokuda ,  Fumio Ohtomo

IPC分类号： G06F11/07

CPC分类号： G01S17/10 ,  G01S7/4865 ,  G01S7/487 ,  G04F10/06

摘要： In measuring a certain time lag between generations of two pulse signals, a time lag measuring device prevents errors in measurement results even with an error in two reference signals for measuring the time lag. The device measures a time lag between a start signal M1 and a stop signal M2 and includes a reference signal generating section 41 generating two reference signals S1, S2 having a phase difference π/2, and an amplitude detecting section 42 detects amplitudes A11, A12 and A21, A22 of the reference signals S1, S2 at generation timings for the start signal M1 and the stop signal M2, a phase difference detecting section 43 calculating a phase _ of the reference signals S according to each set of the amplitudes (A11, A12) and (A21, A22), and a correcting section 46 correcting the calculated phase using correction data for error correction in the reference signals S1, S2.

摘要翻译： 在测量两个脉冲信号代之间的一定时间滞后的情况下，时差测量装置即使在两个参考信号中用于测量时滞的误差也可以防止测量结果中的错误。 该装置测量起始信号M1和停止信号M2之间的时间滞后，并且包括产生具有相位差pi / 2的两个参考信号S1，S2的参考信号产生部分41，并且振幅检测部分42检测振幅A11，A12 以及用于起始信号M1和停止信号M2的产生定时的参考信号S1，S2的A21，A22;相位差检测部分43，根据各组幅度（A11，...）计算参考信号S的相位， A12）和（A21，A22），以及校正部46，其使用用于参考信号S1，S2中的纠错的校正数据来校正所计算的相位。

公开(公告)号：US07945821B2

公开(公告)日：2011-05-17

申请号：US11921914

申请日：2006-06-12

申请人： Masahiro Ohishi ,  Yoshikatsu Tokuda ,  Fumio Ohtomo

发明人： Masahiro Ohishi ,  Yoshikatsu Tokuda ,  Fumio Ohtomo

IPC分类号： G06K5/04

CPC分类号： G01S17/10 ,  G01S7/4865 ,  G01S7/487 ,  G04F10/06

摘要： In measuring a certain time lag between generations of two pulse signals, a time lag measuring device prevents errors in measurement results even with an error in two reference signals for measuring the time lag. The device measures a time lag between a start signal M1 and a stop signal M2 and includes a reference signal generating section 41 generating two reference signals S1, S2 having a phase difference π/2, and an amplitude detecting section 42 detects amplitudes A11, A12 and A21, A22 of the reference signals S1, S2 at generation timings for the start signal M1 and the stop signal M2, a phase difference detecting section 43 calculating a phase _ of the reference signals S according to each set of the amplitudes (A11, A12) and (A21, A22), and a correcting section 46 correcting the calculated phase using correction data for error correction in the reference signals S1, S2.

摘要翻译： 在测量两个脉冲信号代之间的一定时间滞后的情况下，时差测量装置即使在两个参考信号中用于测量时滞的误差也可以防止测量结果中的错误。 该装置测量起始信号M1和停止信号M2之间的时间滞后，并且包括产生具有相位差pgr / 2的两个参考信号S1，S2的参考信号产生部分41，并且振幅检测部分42检测振幅A11， A12和A21，在起始信号M1和停止信号M2的产生定时处的参考信号S1，S2的A22，相位差检测部分43，根据各组幅度（A11）计算参考信号S的相位 ，A12）和（A21，A22），以及校正部46，其使用用于参考信号S1，S2中的纠错的校正数据来校正计算出的相位。

公开(公告)号：US5995233A

公开(公告)日：1999-11-30

申请号：US790631

申请日：1997-01-29

申请人： Fumio Ohtomo ,  Hiroyuki Nishizawa ,  Yoshikatsu Tokuda ,  Ken-ichiro Yoshino ,  Toshikazu Adegawa

发明人： Fumio Ohtomo ,  Hiroyuki Nishizawa ,  Yoshikatsu Tokuda ,  Ken-ichiro Yoshino ,  Toshikazu Adegawa

IPC分类号： G01C15/00 ,  G01B11/00

CPC分类号： G01C15/006

摘要： A surveying system which comprises a light source section for emitting laser beam, a rotational portion for rotating the laser beam from the light source in horizontal direction, a light source driving section for driving the light source unit, a survey instrument main unit having a light receiving unit for receiving the reflected laser beam, and a reflecting object for reflecting the laser beam irradiated from the survey instrument main unit main unit of the survey instrument.

摘要翻译： 一种测量系统，包括用于发射激光束的光源部分，用于在水平方向上旋转来自光源的激光束的旋转部分，用于驱动光源单元的光源驱动部分，具有光的测量仪器主单元 用于接收反射的激光束的接收单元和用于反射从测量仪器的测量仪器主单元主体照射的激光束的反射对象。

公开(公告)号：US5751408A

公开(公告)日：1998-05-12

申请号：US492584

申请日：1995-06-20

申请人： Fumio Ohtomo ,  Yoshikatsu Tokuda

发明人： Fumio Ohtomo ,  Yoshikatsu Tokuda

IPC分类号： G01C3/06 ,  G01C15/00 ,  G01C15/06 ,  G01S7/00 ,  G01S7/499 ,  G01S17/06 ,  G01S17/36 ,  G01S17/42 ,  G01C3/08

CPC分类号： G01S7/499 ,  G01C15/004 ,  G01S17/06 ,  G01S17/36 ,  G01S7/006

摘要： There is provided a surveying apparatus for detecting an object reflector (102) and measuring a distance from the object reflector (102) based on a luminous flux reflected by the object reflector (102) by irradiating a luminous flux toward the object reflector which varies a direction of polarization of reflected rays relative to that of incident rays. The surveying apparatus includes a light source section (106) for radiating the luminous flux as a luminous flux having a predetermined direction of polarization; an irradiating optical system (101) for irradiating the luminous flux from the light source section (106) toward the object reflector (102); a polarizing optical element (122) for dividing a polarized/reflected luminous flux of which direction of polarization has been varied when reflected by the object reflector (102); a first light-receiving section (124, 126) for receiving the polarized/reflected luminous flux divided by the polarizing optical element (122); a second light-receiving section (120) for receiving the reflected luminous flux reflected by the object reflector (102); a detecting section (104) for detecting the object reflector based on an output signal from the first light-receiving section (124, 126); and a distance measuring section (131) for measuring the distance from the object reflector (102) based on an output signal from the second light-receiving section (120).

摘要翻译： 提供了一种用于检测物体反射器（102）的测量装置，并且基于由对象反射器（102）反射的光束，通过向目标反射器照射光束来测量与对象反射器（102）的距离，该距离改变 反射光线相对于入射光线的极化方向。 测量装置包括用于将光束照射为具有预定极化方向的光束的光源部分（106） 照射光学系统（101），用于将来自光源部分（106）的光束照射到物体反射器（102）; 用于分割当由所述物体反射器（102）反射时偏振方向的偏振/反射光束已经变化的偏振光学元件（122）; 用于接收被偏振光学元件（122）分割的偏振/反射光束的第一光接收部分（124,126）; 第二光接收部分（120），用于接收由所述目标反射器（102）反射的反射光束; 检测部分，用于根据来自第一光接收部分的输出信号检测目标反射体; 以及距离测量部分，用于基于来自第二光接收部分的输出信号来测量与目标反射器（102）的距离。

公开(公告)号：US20090046272A1

公开(公告)日：2009-02-19

申请号：US12063820

申请日：2006-07-27

申请人： Masahiro Ohishi ,  Yoshikatsu Tokuda

发明人： Masahiro Ohishi ,  Yoshikatsu Tokuda

IPC分类号： G01C3/08

CPC分类号： G01S17/105 ,  G01S7/4818 ,  G01S7/484 ,  G01S7/4865 ,  G01S7/487

摘要： To provide a surveying instrument for measuring difference in required time of light or distance to an object to be measured while covering a wide dynamic range without adjusting light amount. A light pulse emanating from a light emitting section 1 is divided into a reference light cast to a reference light path F1 and a measurement light cast to a measurement light path F2 through which the measurement light travels to and is reflected back from the object to be measured. These two light beams are received with a light receiving section 9. With a multiplex reflection optical fiber Mp1 interposed in the middle of the measurement light path F2, the measurement light comes out as a row of multiplex light pulses attenuating successively in light amount at a constant rate. From this row of pulses, a measurement light of approximately the same in received light level as the reference light may be selected. Based on the selected measurement light and the reference light, the difference between the time required for the measurement light traveling through the measurement light path F2 and the time required for the reference light traveling through the reference light path F1, or the distance to the object to be measured, is measured.

摘要翻译： 提供一种测量仪器，用于在不调节光量的同时覆盖宽动态范围，测量所需时间的光或距离物体的差异。 从发光部1发出的光脉冲被分割为参考光投射到参考光路径F1和投射到测量光路F2的测量光，测量光通过该光测量光线从物体传播并被从物体反射回来 测量。 这两个光束被光接收部分9接收。通过插入在测量光路F2的中间的多路反射光纤Mp1，测量光作为在 恒定率。 从该行脉冲，可以选择与参考光接收的光级近似相同的测量光。 基于所选择的测量光和参考光，测量光通过F2的测量光所需的时间与通过参考光路F1行进的参考光所需的时间之间的距离，或距物体的距离 被测量。

公开(公告)号：US20110310377A1

公开(公告)日：2011-12-22

申请号：US13141541

申请日：2009-12-18

申请人： Masahiro Ohishi ,  Yoshikatsu Tokuda

发明人： Masahiro Ohishi ,  Yoshikatsu Tokuda

IPC分类号： G01C3/06

CPC分类号： G01S17/325 ,  G01S7/497 ,  G01S17/10

摘要： A distance measuring apparatus and a distance measuring method that enable high-precision and high-speed measurement by canceling variations of a delay circuit in the distance measuring apparatus are provided. In the apparatus and the method, light emitted by a light source section 10 in a pulsed manner is branched into first reference light r1, second reference light r2, and transmitted measurement light mt, and the difference in detection time among the first reference light r1 having propagated through a first reference light path R1 which causes substantially no optical variations, the second reference light r2 having propagated through a second reference light path in which an optical delay generating section 50 is inserted, and received measurement light mr returning from an object to be measured 160 as a result of radiating the transmitted measurement light to the object to be measured 160 is measured to measure the distance from the object to be measured 160. In the case where the received measurement light mr and the first reference light r1 are temporally separate from each other, the distance is calculated from the difference in detection time between the received measurement light mr and the first reference light r1. In the case where the received measurement light mr and the first reference light r1 are not temporally separate from each other, a distance L is calculated from a difference in detection time Td between the first reference light r1 and the second reference light r2 and a difference in detection time Td′ between the received measurement light mr and the second reference light r2.

摘要翻译： 提供了一种通过抵消距离测量装置中的延迟电路的变化来实现高精度和高速测量的距离测量装置和距离测量方法。 在该装置和方法中，由光源部10以脉冲方式发射的光分支为第一参考光r1，第二参考光r2和透射测量光mt，并且第一参考光r1中的检测时间差 已经传播通过基本上不发生光学变化的第一参考光路R1，第二参考光r2已经传播通过其中插入光学延迟产生部分50的第二参考光路，并且接收从对象返回的测量光mr 被测量160的结果是将测量光发射到待测量对象160被测量以测量与待测物体160的距离。在接收测量光mr和第一参考光r1在时间上的情况下 彼此分离，距离是根据接收到的测量值之间的检测时间差来计算的 t mr和第一参考光r1。 在接收的测量光mr和第一参考光r1在时间上不相互分离的情况下，根据第一参考光r1和第二参考光r2之间的检测时间Td的差异计算距离L， 在接收测量光mr和第二参考光r2之间的检测时间Td'。

公开(公告)号：US07626686B2

公开(公告)日：2009-12-01

申请号：US12063820

申请日：2006-07-27

申请人： Masahiro Ohishi ,  Yoshikatsu Tokuda

发明人： Masahiro Ohishi ,  Yoshikatsu Tokuda

IPC分类号： G01C3/08

CPC分类号： G01S17/105 ,  G01S7/4818 ,  G01S7/484 ,  G01S7/4865 ,  G01S7/487

摘要： To provide a surveying instrument for measuring difference in required time of light or distance to an object to be measured while covering a wide dynamic range without adjusting light amount. A light pulse emanating from a light emitting section 1 is divided into a reference light cast to a reference light path F1 and a measurement light cast to a measurement light path F2 through which the measurement light travels to and is reflected back from the object to be measured. These two light beams are received with a light receiving section 9. With a multiplex reflection optical fiber Mp1 interposed in the middle of the measurement light path F2, the measurement light comes out as a row of multiplex light pulses attenuating successively in light amount at a constant rate. From this row of pulses, a measurement light of approximately the same in received light level as the reference light may be selected. Based on the selected measurement light and the reference light, the difference between the time required for the measurement light traveling through the measurement light path F2 and the time required for the reference light traveling through the reference light path F1, or the distance to the object to be measured, is measured.

摘要翻译： 提供一种测量仪器，用于在不调节光量的同时覆盖宽动态范围，测量所需时间的光或距离物体的差异。 从发光部1发出的光脉冲被分割为参考光投射到参考光路径F1和投射到测量光路F2的测量光，测量光通过该光测量光线从物体传播并被从物体反射回来 测量。 这两个光束被光接收部分9接收。通过插入在测量光路F2的中间的多路反射光纤Mp1，测量光作为在 恒定率。 从该行脉冲，可以选择与参考光接收的光级近似相同的测量光。 基于所选择的测量光和参考光，测量光通过F2的测量光所需的时间与通过参考光路F1行进的参考光所需的时间之间的距离，或距物体的距离 被测量。

公开(公告)号：US08610880B2

公开(公告)日：2013-12-17

申请号：US13141541

申请日：2009-12-18

申请人： Masahiro Ohishi ,  Yoshikatsu Tokuda

发明人： Masahiro Ohishi ,  Yoshikatsu Tokuda

IPC分类号： G01C3/08

CPC分类号： G01S17/325 ,  G01S7/497 ,  G01S17/10

摘要： A distance measuring apparatus and method that enable high-precision and high-speed measurement by canceling variations of a delay circuit in the apparatus are provided. Pulsed light is branched into first and second reference light, and transmitted measurement light, and the difference in detection time among the first reference light along a first path with no optical variations, the second reference light along a second path with an optical delay, and received measurement light from an object to be measured is measured. The received measurement light and the first reference light are temporally separate, distance is calculated from the difference in detection time between the received measurement light and the first reference light. When the received measurement light and the first reference light are not temporally separate, distance is calculated from a difference in detection time between the first reference light and the second reference light and a difference in detection time between the received measurement light and the second reference light.

摘要翻译： 提供了一种通过抵消装置中的延迟电路的变化来实现高精度和高速测量的距离测量装置和方法。 脉冲光被分支为第一和第二参考光，并且传输测量光，并且沿着第一路径而不具有光学变化的第一参考光中的检测时间差异，沿着具有光学延迟的第二路径的第二参考光，以及 测量来自待测物体的测量光。 所接收的测量光和第一参考光在时间上是分开的，距离是根据所接收的测量光和第一参考光之间的检测时间差来计算的。 当所接收的测量光和第一参考光不在时间上分离时，根据第一参考光和第二参考光之间的检测时间差和从接收的测量光和第二参考光之间的检测时间的差计算出距离 。

公开(公告)号：US06665055B2

公开(公告)日：2003-12-16

申请号：US10320234

申请日：2002-12-16

申请人： Masahiro Ohishi ,  Yoshikatsu Tokuda

发明人： Masahiro Ohishi ,  Yoshikatsu Tokuda

IPC分类号： G01C308

CPC分类号： G01C3/08 ,  G01S7/487 ,  G01S7/4873 ,  G01S7/497 ,  G01S17/105

摘要： The present invention relates to a light-wave rangefinder using a pulse method, which can reduce a measurement error, in which a tuned amplifier converts an electric signal of a light receiving unit into a damped oscillation waveform and thereby an arithmetic processing means can calculate a distance from a measuring position to a reflecting object on the basis of the damped oscillation waveform of the tuned amplifier. An optical noise sampling unit samples an optical noise produced in the rangefinder; an optical-noise storage unit stores sampling data of the optical-noise sampling unit; an arithmetic processing means reduces a measurement error caused by an optical noise on the basis of the sampling data of the optical-noise storage unit; and thereby a distance, a measurement error of which is reduced, can be calculated.