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1. 发明公开

EP2841877A1 DISPOSITIF DE MESURE À FIBRE OPTIQUE, GYROMÈTRE, CENTRALE DE NAVIGATION ET DE STABILISATION INERTIELLE 有权转让
标题翻译：光纤测量装置，并打开KREISELTRÄGHEITSSTABILISIERUNGS-和导航装置
公开(公告)号：EP2841877A1
公开(公告)日：2015-03-04
申请号：EP13723874.7
申请日：2013-04-25
申请人： Ixblue
发明人： LEFEVRE, Hervé , GUATTARI, Frédéric , MOLUCON, Cédric , DUCLOUX, Eric , FERRAND, Sébastien
IPC分类号： G01C19/72
CPC分类号： G01C19/721 , G01C19/726 , G01C21/00
摘要： The invention relates to a fibre-optic measurement device (10) comprising a SAGNAC ring interferometer (20) having its own frequency f
p , a detector (14) and a modulation chain (30) generating a phase-shift modulation ϕ
m (t) between the two counter-propagating waves (24, 25) propagating in the ring interferometer. The invention aims to reduce measurement faults due to the linearity defects in the modulation chain of such a measurement device with optical fibre. For said reason, the invention provides a fibre-optic measurement device reducing the amplitude of the phase-shift modulation ϕ
m (t) which is the sum of a first biasing phase-shift modulation component ϕ
b1 (t) and a first counter-reaction phase-shift modulation component ϕ
cr1 (t), said phase-shift modulation ϕ
m (t) falling or rising by twice the amplitude of the first biasing phase-shift modulation component ϕ
b1 (t). The invention also relates to a rate gyro comprising such a measurement device and to an inertial stabilisation or navigation unit including at least one such rate gyro.

2. 发明公开

EP2336718A2 System to reduce gyroscopic errors with limited power supply quality in a fiber optic gyroscope 有权转让
标题翻译：系统zur Reduzierung von Gyroskopfehlern mit begrenzterStromversorgungsqualität在einem faseroptischen Gyroskop
公开(公告)号：EP2336718A2
公开(公告)日：2011-06-22
申请号：EP10176685.5
申请日：2010-09-14
申请人： Honeywell International Inc.
发明人： Keith, Gregory W. , Mead, Derek , Smith, Douglas E. , Tarleton, Norman Gerard
IPC分类号： G01C19/72 , H04B15/02
CPC分类号： G01C19/726
摘要： A fiber optic gyroscope includes a light source, an optical coupler in optical communication with the light source, with the optical coupler configured to receive an optical signal from the light source, an optical modulator in optical communication with the optical coupler, and a fiber optic coil in optical communication with the optical modulator. A demodulator is configured to receive an optical signal from the optical coupler and convert the optical signal to an electrical signal. A loop closure electronics module is configured to receive the electrical signal from the demodulator. A bias modulator is responsive to an output from the loop closure electronics module and is configured to output a modulation signal to the optical modulator. A first crosstalk filter network is operatively coupled to the demodulator, and a second crosstalk filter network is operatively coupled to the bias modulator.
摘要翻译：光纤陀螺仪包括光源，与光源光通信的光耦合器，光耦合器被配置为从光源接收光信号，光调制器与光耦合器光学通信，以及光纤线圈与光学调制器进行光通信。解调器被配置为从光耦合器接收光信号并将光信号转换成电信号。闭环电子模块被配置为从解调器接收电信号。偏置调制器响应于闭环电子模块的输出，并被配置为向光调制器输出调制信号。第一串扰滤波器网络可操作地耦合到解调器，并且第二串扰滤波器网络可操作地耦合到偏置调制器。

3. 发明公开

EP2154477A2 Segmented optics circuit drive for closed loop fiber optic sensors 审中-公开
标题翻译： Segmentierter OptikschaltungsantriebfürGlasfasersensoren mit geschlossener Schlaufe
公开(公告)号：EP2154477A2
公开(公告)日：2010-02-17
申请号：EP09167101.6
申请日：2009-08-03
申请人： Honeywell International, Inc.
发明人： Keith, Gregg
IPC分类号： G01C19/72
CPC分类号： G01C19/726 , H03M1/68
摘要： Systems and methods for improving output resolution of an optical drive circuit in an optical sensor. The optical sensor circuit includes an optics circuit (10) that generates analog measurement data, a detector circuit (20) that detects the analog measurement data and converts the analog measurement data to a digital measurement data, and a signal processing circuit (30) that demodulates the digital measurement data and generates a segmented digital signal based on the demodulated digital measurement data. The optical sensor circuit further includes an optics drive circuit (40) that generates an analog drive signal based on the segmented digital signal. The analog drive signal is then used to drive the optical circuit.
摘要翻译：用于提高光学传感器中的光驱动电路的输出分辨率的系统和方法。光传感器电路包括产生模拟测量数据的光学电路（10），检测模拟测量数据并将模拟测量数据转换成数字测量数据的检测器电路（20），以及信号处理电路（30），其中，解调数字测量数据，并根据解调的数字测量数据生成分段数字信号。光学传感器电路还包括基于分割的数字信号产生模拟驱动信号的光学驱动电路（40）。然后将模拟驱动信号用于驱动光电路。

4. 发明公开

EP1718929A1 SYSTEM AND METHOD FOR REDUCING FIBER OPTIC GYROSCOPE COLOR NOISE 失效
标题翻译：装置和方法用于降低色彩噪声用于光纤陀螺仪
公开(公告)号：EP1718929A1
公开(公告)日：2006-11-08
申请号：EP04810489.7
申请日：2004-11-05
申请人： Honeywell International Inc.
发明人： CHEN, Chung-Jen , LANGE, Charles, H.
IPC分类号： G01C19/72
CPC分类号： G01C19/726
摘要： A phase jump amplitude and timing controller is used in a fiber optic gyroscope for suppressing color noise. The phase jump amplitude and timing controller inserts a phase/voltage jump into the feedback signal of the loop closure electronics of the fiber optic gyroscope. This phase/voltage jump breaks the repeated pattern of the drive signal. The IOC time-dependent characteristics are totally eliminated by the randomized feedback signal because no repeated signal is applied to the IOC. The randomized amplitude is preferably within the full ±π phase such that the optical errors average to zero. A fixed frequency higher than the interested spectral region can shift the color noise to higher frequency. A randomized frequency can spread the color noise over full spectrum and totally eliminate the RDS. In other words, the color noise caused by the nonlinearity of the driving circuit and IOC spreads out over a wide range of spectrum such that no distinct frequency peaks are apparent in the spectral domain.

5. 发明授权

EP1036302B1 DIGITALER PHASENMODULATOR 有权
标题翻译：数字相位调制器
公开(公告)号：EP1036302B1
公开(公告)日：2004-03-24
申请号：EP98961100.9
申请日：1998-10-15
申请人： LITEF GmbH
发明人： RIBES, Mauricio , TAZARTES, Daniel, A. , MARK, John, G.
IPC分类号： G01C19/72 , G02F1/035
CPC分类号： G01C19/726 , G02F1/011 , G02F1/0121

6. 发明授权

EP1029221B1 VERFAHREN ZUR VERMEIDUNG VON NULLPUNKTFEHLERN IN EINEM FASEROPTISCHEN SAGNAC-INTERFEROMETER 有权
标题翻译：程序，以防止零缺陷在光纤萨格纳克干涉仪
公开(公告)号：EP1029221B1
公开(公告)日：2001-08-08
申请号：EP98951518.4
申请日：1998-10-13
申请人： LITEF GmbH
发明人： HANDRICH, Eberhard , SPAHLINGER, Günter , KEMMLER, Manfred
IPC分类号： G01C19/72
CPC分类号： G01C19/726

7. 发明公开

EP1029221A1 VERFAHREN ZUR VERMEIDUNG VON NULLPUNKTFEHLERN IN EINEM FASEROPTISCHEN SAGNAC-INTERFEROMETER 有权
标题翻译：程序，以防止零缺陷在光纤萨格纳克干涉仪
公开(公告)号：EP1029221A1
公开(公告)日：2000-08-23
申请号：EP98951518.4
申请日：1998-10-13
申请人： LITEF GmbH
发明人： HANDRICH, Eberhard , SPAHLINGER, Günter , KEMMLER, Manfred
IPC分类号： G01C19/72
CPC分类号： G01C19/726
摘要： The invention relates to a method and a related device for avoiding zero-point errors in an optical fibre Sagnac-interferometer for measuring rotation speeds. Said device works according to a stochastic modulation method characterised in that any fault occurring in the detector path, which is proportional to the difference between two successive phase modulator values, is decorrelated from the intrinsic detector signal. In order to obtain this decorrelation, the Sagnac interferometer is designed so that the propagation time from the phase modulator (6) to the detector device (8) is greater than the time up to the next modulation change. For this purpose, it is possible either to insert an optical waveguide (7) with an appropriate length, i.e. a waveguide at least as long as the detector fibre (5), upstream from the detector (8), or to increase, by integer multiple multiplication, the detector modulation frequency f0 up to a value i.f0.

8. 发明授权

EP0611950B1 Kompensation der Lichtquellenwellenlängenänderung in einem geregelten faseroptischen Sagnac-Interferometer 失效
标题翻译：在经调节的光纤萨格纳克干涉仪的光源的波长变化的补偿
公开(公告)号：EP0611950B1
公开(公告)日：1997-01-08
申请号：EP93102494.7
申请日：1993-02-17
申请人： LITEF GmbH
发明人： Kemmler, Manfred
IPC分类号： G01C19/72
CPC分类号： G01C19/726

9. 发明授权

EP0576655B1 GYROMETRE A FIBRE OPTIQUE A TRAITEMENT NUMERIQUE DU SIGNAL 失效
标题翻译：光纤陀螺用于数字信号处理的
公开(公告)号：EP0576655B1
公开(公告)日：1996-01-31
申请号：EP93902375.0
申请日：1992-12-23
申请人： SAGEM SA
发明人： ROCHEREAU, Jacques , PEPIN, Jean-François
IPC分类号： G01C19/72
CPC分类号： G01C19/726
摘要： The gyrometer is comprised of an optical fiber coil (10); an electromagnetic source (12) provided with a separator to supply the coil with two contrarotary waves coming form the source; an interference detector (22) receiving the contrarotary waves; electro-optical phase shifting means (31), which are controlled to provide the waves with a periodical alternating and phase-symmetrical modulation, at 1/2 period τn subtantially equal to the throughput time τf of the coil, and receive a phase shifting ramp of adjustable slope, said means being arranged upstream of the coil for one wave and downstream for the other; and electronic loop and measurement means controlling the direction and the value of the slope of the ramp to cancel the phase shifting of the waves received by the detector. The electronic means are comprised of an analog/digital convertor (27) receiving the output signal from the interference detector (22) and driving a circuit having a digital demodulator (26) receiving a reference signal at the period 2τn, an integrator (28) providing a signal representative of an estimation Φ of the rotation speed, a correction adder (29) and an integrator (30) for the generation of said ramp.

10. 发明授权

EP0587202B1 Fiber optic gyro 失效
标题翻译：光纤陀螺仪
公开(公告)号：EP0587202B1
公开(公告)日：1996-01-24
申请号：EP93119056.5
申请日：1990-08-09
申请人： JAPAN AVIATION ELECTRONICS INDUSTRY, LIMITED
发明人： Okada, Kenichi, c/o Japan Aviation Electronics , Nishinio, Masashi, c/o Japan Aviation Electronics , Tanigawa, Shu, c/o Japan Aviation Elect.Ind.Ltd.
IPC分类号： G01C19/72
CPC分类号： G01C19/726

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