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公开(公告)号：EP3767339A1
公开(公告)日：2021-01-20
申请号：EP18915710.0
申请日：2018-04-18
发明人： KOTAKE, Nobuki , KAJIYAMA, Yutaka
IPC分类号： G01S17/95
摘要： In a conventional laser radar device, there has been a problem that since a distance resolution is changed in advance depending on a measurement distance, it is necessary to perform measurement again after changing the distance resolution. A laser radar device of the present invention includes: an optical oscillator oscillating laser light; an optical modulator modulating the laser light oscillated by the optical oscillator; an optical antenna radiating the laser light modulated by the optical modulator to an atmosphere, and receiving scattered light from a radiation target as received light; an optical receiver performing heterodyne detection on the received light received by the optical antenna; and a signal processor calculating for a range bin a spectrum of a received signal obtained by the heterodyne detection by the optical receiver, calculating a signal to noise ratio of the range bin, and integrating the spectrum of the range bin and spectra of one or more range bins adjacent to the range bin when the signal to noise ratio is less than or equal to a threshold value.
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公开(公告)号：EP2896972B1
公开(公告)日：2019-10-30
申请号：EP13837680.1
申请日：2013-05-16
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公开(公告)号：EP3428685A1
公开(公告)日：2019-01-16
申请号：EP16897856.7
申请日：2016-04-05
发明人： KOTAKE, Nobuki , KAMEYAMA, Shumpei
摘要： In conventional laser radar systems, the wind velocity measurement accuracy cannot be improved without changing their time gate widths, which is a problem.
A laser radar system according to the present invention includes: an optical oscillator to perform laser light oscillation; an optical modulator to modulate the laser light by oscillation of the optical oscillator; an optical antenna to emit the laser light modulated by the optical modulator into the atmosphere and to receive scattered light from an irradiated target as reception light; an optical receiver to perform heterodyne detection on the reception light received by the optical antenna; and a signal processor to calculate a spectrum of a reception signal obtained by the optical receiver's performing heterodyne detection, to decompose the spectrum using signal-to-noise ratios, and to calculate a velocity of an irradiated target from a decomposed spectrum.-
公开(公告)号：EP2884306B1
公开(公告)日：2017-09-13
申请号：EP13827399.0
申请日：2013-03-04
CPC分类号： G01S17/95 , G01S7/4817 , G01S7/4818 , G01S7/484 , G01S7/4868 , G01S7/487 , G01S17/42 , G01S17/58 , Y02A90/19
摘要： An optimal position analysis unit 24 specifies an optimal installation position for a photodetector 6 by using spectra which by a spectrum and wind speed computing unit 23 calculated by analyzing output data of a photodetector 6 installed at different installation positions, controls a position adjustment made by an optical unit adjustment driving unit 7, and optimizes the installation position of the photodetector 6.
摘要翻译： 最佳位置分析单元24通过使用频谱和风速计算单元23通过分析安装在不同安装位置处的光电检测器6的输出数据而计算出的频谱来指定光电检测器6的最佳安装位置， 光学单元调节驱动单元7，并优化光电探测器6的安装位置。
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公开(公告)号：EP3955028A1
公开(公告)日：2022-02-16
申请号：EP20787733.3
申请日：2020-01-27
IPC分类号： G01S17/95
摘要： The measurement accuracy of the wind speed at a long distance is improved without lowering a wind speed measurement rate at a short distance. A wind measurement lidar device 1 includes: a beam switching unit 8 to switch to another beam direction when beam selection time elapses in one beam direction, the beam selection time being time in which pulses of greater than or equal to a predetermined minimum number of pulses are generated; an integrated spectrum storage unit 12d to store an integrated spectrum obtained by integrating spectra for each of wind speed measurement sections being a combination of a beam direction and a time interval; spectrum integrating units 12c, 12e to generate an integrated spectrum by integrating, for each of the wind speed measurement sections, a plurality of spectra obtained from a plurality of the pulses transmitted in succession in a beam direction and an integrated spectrum being stored in the integrated spectrum storage unit; a wind speed calculating unit 12h to calculate the wind speed when the SN ratio of the integrated spectrum is greater than or equal to a first threshold value; and a stored integrated spectrum correcting unit 12j to store an integrated spectrum integrated for one of the wind speed measurement sections, for which no wind speed is calculated, into the integrated spectrum storage unit 12d.
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公开(公告)号：EP3875866A1
公开(公告)日：2021-09-08
申请号：EP18942943.4
申请日：2018-12-11
发明人： KOTAKE, Nobuki , SUZUKI, Masataka , YANAGISAWA, Takayuki , SHIGA, Akira , YOSHIKI, Wataru , HAMADA, Mamoru , SAKAI, Yu
IPC分类号： F24F11/79 , F24F110/30 , F24F120/10
摘要： An air conditioning device (200) includes: a wind measurement processing unit (51) calculating wind directions (Φ, Θ) using measured values by a wind measurement lidar (11); and a blowing control unit (52) controlling blowing directions (Φ', Θ') using measured wind direction values (Φ E , Θ L ) calculated by the wind measurement processing unit (51).
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公开(公告)号：EP3604799A1
公开(公告)日：2020-02-05
申请号：EP17908025.4
申请日：2017-04-26
发明人： KOTAKE, Nobuki , OTSUKA, Hiroshi
IPC分类号： F03D7/04
摘要： The conventional wind farm control system has a problem in that it is difficult to obtain information with high spatial resolution and information sufficient for improving machine learning cannot be obtained. An artificial intelligence (AI) system according to the present invention includes: a learning device to perform machine learning on a wind vector, to predict a power generation amount of a wind turbine, and compare the predicted amount with a measured power generation amount, the learning device choosing, when the power difference therebetween is a predetermined threshold value or larger, a laser radar system for measuring the wind vector and then deriving measurement parameters; and a control device to send the measurement parameters derived by the learning device to the laser radar system.
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公开(公告)号：EP3056924B1
公开(公告)日：2020-01-01
申请号：EP13895308.8
申请日：2013-10-11
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公开(公告)号：EP3232226A1
公开(公告)日：2017-10-18
申请号：EP14908007.9
申请日：2014-12-12
摘要： A laser radar device is described that includes a multi-wavelength light oscillator 1 to generate a plurality of light beams with different wavelengths, a plurality of modulation units 3 to modulate each of the plurality of light beams generated by the multi-wavelength light oscillator with a modulation frequency altered according to a corresponding line of sight of emission, a transmitting/receiving optical system 8 to emit each of the light beams modulated by the modulation units in a corresponding line of sight, and receive reflected light beams, an optical receiver 11 to perform heterodyne detection by using the generated light beams and the received light beams corresponding to the generated light beams, and detect beat signals in the respective lines of sight, and a signal analyzing unit 12 to calculate a value of Doppler wind speed in the respective lines of sight from the respective beat signals, and calculate a value of three-dimensional wind speed using the values of Doppler wind speed
摘要翻译： 描述了激光雷达装置，其包括：多波长光振荡器1，用于产生具有不同波长的多个光束;多个调制单元3，用于利用多波长光振荡器产生的多个光束中的每一个来调制 根据相应的发射视线改变的调制频率;发射/接收光学系统8，用于发射由调制单元调制的在对应视线中的每个光束，并接收反射光束;光接收器11 通过使用产生的光束和与所产生的光束相对应的接收光束来执行外差检测，并且检测各个视线中的差拍信号，以及信号分析单元12，用于计算相应的多普勒风速的值 来自各个差拍信号的视线，并且使用多普勒值来计算三维风速的值 风速
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公开(公告)号：EP2866050A1
公开(公告)日：2015-04-29
申请号：EP13810413.8
申请日：2013-04-05
摘要： A noise spectral differential unit 10 records a noise spectrum in a state without any received signal, and subtracts the noise spectrum from a received signal spectrum. An offset corrector 11 performs offset correction of the signal spectrum obtained by subtracting the noise spectrum by the noise spectral differential unit 10 with respect to the noise level at a frequency separated from the frequency peak position of the received signal by a prescribed value. A frequency shift analyzer 12 executes signal processing of the signal spectrum resulting after the offset correction and measures a frequency shift. A wind velocity converter 13 makes wind velocity detection from the frequency shift measured by the frequency shift analyzer 12.
摘要翻译： 噪声频谱差分单元10在没有任何接收信号的状态下记录噪声频谱，并且从接收信号频谱中减去噪声频谱。 偏移校正器11对通过噪声频谱微分单元10减去噪声频谱所获得的信号频谱相对于与接收信号的频率峰值位置分开预定值的频率处的噪声水平执行偏移校正。 频移分析器12执行偏移校正之后产生的信号频谱的信号处理并测量频移。 风速转换器13根据由频移分析器12测量的频移来进行风速检测。
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