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1. 发明授权

US07945821B2 Time lag measuring device, distance measuring apparatus and distance measuring method 有权
标题翻译：时滞测量装置，距离测量装置和距离测量方法
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。

2. 发明授权

US07849371B2 Time lag measuring device, distance measuring apparatus and distance measuring method 有权
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.

3. 发明申请

US20090235127A1 Time lag measuring device, distance measuring apparatus and distance measuring method 有权
标题翻译：时滞测量装置，距离测量装置和距离测量方法
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。

4. 发明授权

US08610880B2 Distance measuring apparatus and distance measuring method 有权
标题翻译：距离测量仪和距离测量方法
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。

5. 发明授权

US06665055B2 Light-wave rangefinder using a pulse method 有权
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.

6. 发明授权

US06384904B1 Distance measuring apparatus 有权
标题翻译：距离测量仪
公开(公告)号：US06384904B1
公开(公告)日：2002-05-07
申请号：US09574489
申请日：2000-05-19
申请人： Masahiro Ohishi , Yoshikatsu Tokuda
发明人： Masahiro Ohishi , Yoshikatsu Tokuda
IPC分类号： G01C308
CPC分类号： G01S17/08 , G01S7/4812 , G01S7/4868
摘要： The present invention relates to a distance measuring apparatus having an attenuation filter for adjusting luminous energy of a luminous flux incident on light receiving converting means. An object of the present invention is to provide a distance measuring apparatus in which at least a part of the attenuation filter is arranged as deflection means. According to the arrangement of the distance measuring apparatus of the present invention, a light projecting system irradiates a measuring luminous flux toward an object under measurement, a light receiving system receives the reflected luminous flux reflected on the object under measurement and leading the reflected light to light receiving converting means, and a distance from a position at which measurement is carried out to a position at which the object under measurement is located, is measured based on the reflected luminous flux received by the light receiving converting means. An attenuation filter adjusts luminous energy of the luminous flux incident on the light receiving converting means, and at least a part of the attenuation filter is arranged as deflection means.
摘要翻译：本发明涉及一种具有衰减滤波器的距离测量装置，该衰减滤波器用于调节入射在光接收转换装置上的光通量的光能。本发明的目的是提供一种距离测量装置，其中衰减滤波器的至少一部分被布置为偏转装置。根据本发明的距离测量装置的布置，光投射系统向测量对象照射测量光束，光接收系统接收被测物体上反射的反射光束并将反射光导向基于由光接收转换装置接收到的反射光通量来测量光接收转换装置以及从测量所在的位置到测量对象位置的位置的距离。衰减滤波器调节入射在光接收转换装置上的光束的光能，并且衰减滤波器的至少一部分被布置为偏转装置。

7. 发明申请

US20110310377A1 DISTANCE MEASURING APPARATUS AND DISTANCE MEASURING METHOD 有权
标题翻译：距离测量装置和距离测量方法
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'。

8. 发明授权

US07626686B2 Surveying instrument 有权
标题翻译：测量仪器
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。

9. 发明申请

US20090046272A1 SURVEYING INSTRUMENT 有权
标题翻译：调查仪器
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。

10. 发明授权

US07777865B2 Time difference measuring device, measuring method, distance measuring device, and distance measuring method 有权
标题翻译：时差测量装置，测量方法，距离测量装置和距离测量方法
公开(公告)号：US07777865B2
公开(公告)日：2010-08-17
申请号：US11664666
申请日：2005-09-30
申请人： Masahiro Ohishi , Fumio Ohtomo
发明人： Masahiro Ohishi , Fumio Ohtomo
IPC分类号： G01C3/08
CPC分类号： G01S17/105 , G01S7/497 , G04F10/06
摘要： A time difference measuring device can accurately measure a time difference between two pulse signals generated with a predetermined time difference by measuring the two pulse signals by one measurement. The time difference measuring device measures a time difference between a start signal (M1) and a stop signal (M2). The device has a reference signal generation unit (41) for generating two reference signals (S1, S2) having a π/2 phase difference. According to corresponding amplitude values (A11, A12) and (A21, A22) of the reference signals (S1, S2) at each generation timing of the start signal (M1) and the stop signal (M2), a phase difference detection unit (42) calculates a phase difference Δθ (=θstop−θstart) between the generation timings of the pulse signals (M1, M2). According to the detected phase difference Δθ and the cycle (Ts) of the reference signals (S1; S2), a time difference calculation unit (44) calculates the generation time difference Δt between the pulse signals (m1, M2).
摘要翻译：时差测量装置可以通过一次测量来测量两个脉冲信号来精确地测量以预定时间差产生的两个脉冲信号之间的时间差。时差测量装置测量起始信号（M1）和停止信号（M2）之间的时间差。该装置具有用于产生具有＆pgr / 2相位差的两个参考信号（S1，S2）的参考信号产生单元（41）。根据开始信号（M1）和停止信号（M2）的各生成定时的参考信号（S1，S2）的相应振幅值（A11，A12）和（A21，A22），相位差检测单元 42）计算相位差＆Dgr;＆Thetas; （M1，M2）的发生定时之间（=＆amp; t;停止 - 开始）。根据检测到的相位差＆Dgr;＆Thetas; 参考信号（S1; S2）的周期（Ts），时间差计算单元（44）计算脉冲信号（m1，M2）之间的生成时间差Dgr; t。

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