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公开(公告)号：US10539663B2
公开(公告)日：2020-01-21
申请号：US15785243
申请日：2017-10-16
Applicant: SZ DJI TECHNOLOGY CO., LTD.
Inventor： Xiang Liu , Zhipeng Zhan , Wenjin Pu , Xiaoping Hong
Abstract: Introduced here are techniques for implementing a comparator-based LIDAR system with improved components, such as an improved high-speed comparator circuit, to acquire depth information from the surroundings of an unmanned moving object (e.g., a UAV). In various embodiments, the LIDAR system includes an amplifier module with different configurations of anti-saturation circuitry. The LIDAR system may further include various feedback control mechanisms for noise interference reduction and timing measurement compensation including, for example, dynamic gain adjustment of the photodetector module, and/or dynamic adjustment of comparators' thresholds. Among other components, the disclosed comparator circuit can provide the LIDAR system with a wide dynamic range, preventing large signal amplification saturation while also providing sufficient magnification of small signals.
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公开(公告)号：US11188079B2
公开(公告)日：2021-11-30
申请号：US16283551
申请日：2019-02-22
Applicant: SZ DJI TECHNOLOGY CO., LTD.
Inventor： Jiebin Xie , Wei Ren , Zhipeng Zhan
IPC: G05D1/00 , B64C39/02 , B64D47/08 , G01S17/89 , G01S17/933
Abstract: Example embodiments include a motion mechanism that can be coupled between the main body of an unmanned movable object and the optoelectronic scanning module. The motion mechanism can include, e.g., a spinning device and a tilting device. The spinning device can be operable to rotate the scanning module relative to the main body about a spin axis. The tilting device can be operable, e.g., in response to a tilt angle input, to rotate the scanning module about an additional axis that is transverse to the spin axis. Further example embodiments include an orientation sensor installed on the main body of the unmanned movable object. Some embodiments also provide a controller that is configured to receive an orientation signal from the orientation sensor and, based at least in part on the orientation signal, determine a tilt value for the tilt angle input for the tilting device in the motion mechanism.
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Patent Agency Ranking
公开(公告)号：US20180284229A1
公开(公告)日：2018-10-04
申请号：US15785243
申请日：2017-10-16
Applicant: SZ DJI TECHNOLOGY CO., LTD.
Inventor： Xiang Liu , Zhipeng Zhan , Wenjin Pu , Xiaoping Hong
Abstract: Introduced here are techniques for implementing a comparator-based LIDAR system with improved components, such as an improved high-speed comparator circuit, to acquire depth information from the surroundings of an unmanned moving object (e.g., a UAV). In various embodiments, the LIDAR system includes an amplifier module with different configurations of anti-saturation circuitry. The LIDAR system may further include various feedback control mechanisms for noise interference reduction and timing measurement compensation including, for example, dynamic gain adjustment of the photodetector module, and/or dynamic adjustment of comparators' thresholds. Among other components, the disclosed comparator circuit can provide the LIDAR system with a wide dynamic range, preventing large signal amplification saturation while also providing sufficient magnification of small signals.
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公开(公告)号：US11053005B2
公开(公告)日：2021-07-06
申请号：US16252172
申请日：2019-01-18
Applicant: SZ DJI TECHNOLOGY CO., LTD.
Inventor： Jiebin Xie , Wei Ren , Weisi Ma , Zhipeng Zhan , Shuhan Zhang
Abstract: An apparatus includes a light source configured to emit light, a beam shaper configured to project the light to substantially surround the apparatus in a plane and onto an object in the plane, and a receiver configured to project the light reflected from the object in the plane to an image sensor. A distortion parameter of the receiver in conjunction with a difference between the emitted light and the reflected light detected at the image sensor is indicative of at least one of a direction or a distance of the apparatus relative to the object.
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公开(公告)号：US20200150232A1
公开(公告)日：2020-05-14
申请号：US16742224
申请日：2020-01-14
Applicant: SZ DJI TECHNOLOGY CO., LTD.
Inventor： Xiang LIU , Zhipeng Zhan , Wenjin Pu , Xiaoping Hong
IPC: G01S7/487 , G01S17/933 , G01S7/486 , G01S7/4865
Abstract: Introduced here are techniques for implementing a comparator-based LIDAR system with improved components, such as an improved high-speed comparator circuit, to acquire depth information from the surroundings of an unmanned moving object (e.g., a UAV). In various embodiments, the LIDAR system includes an amplifier module with different configurations of anti-saturation circuitry. The LIDAR system may further include various feedback control mechanisms for noise interference reduction and timing measurement compensation including, for example, dynamic gain adjustment of the photodetector module, and/or dynamic adjustment of comparators' thresholds. Among other components, the disclosed comparator circuit can provide the LIDAR system with a wide dynamic range, preventing large signal amplification saturation while also providing sufficient magnification of small signals.
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6.发明申请公开(公告)号：US20190257923A1
公开(公告)日：2019-08-22
申请号：US16285079
申请日：2019-02-25
Applicant: SZ DJI TECHNOLOGY CO., LTD.
Inventor： Jiebin Xie , Wei Ren , Zhipeng Zhan
Abstract: Introduced here are techniques to implement an optoelectronic scanning module (e.g., a LIDAR module) that is lighter in weight and cheaper in cost than the traditional LIDAR modules, and yet still enjoy the same or similar advantages (e.g., high precision, and all weather) as the traditional LIDARs. Example embodiments of the various techniques introduced here include a scanning optoelectronic scanning module that can be carried by an unmanned movable object, such as a UAV. The scanning module further includes an optical structure coupled to the light emitting module. The optical structure is positioned to increase a beam height of the emitted light while generally maintaining a beam width of the emitted light. Moreover, the UAV can carry a motion mechanism operable to rotate the scanning module relative to the airframe about a spin axis, so that the scanning module can perform 360 degree horizontal scans.
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7.发明申请公开(公告)号：US20190187711A1
公开(公告)日：2019-06-20
申请号：US16283551
申请日：2019-02-22
Applicant: SZ DJI TECHNOLOGY CO., LTD.
Inventor： Jiebin Xie , Wei Ren , Zhipeng Zhan
CPC classification number: G05D1/0094 , B64C39/024 , B64C2201/123 , B64C2201/127 , B64C2201/141 , B64D47/08 , G01S17/89 , G01S17/933
Abstract: Example embodiments include a motion mechanism that can be coupled between the main body of an unmanned movable object and the optoelectronic scanning module. The motion mechanism can include, e.g., a spinning device and a tilting device. The spinning device can be operable to rotate the scanning module relative to the main body about a spin axis. The tilting device can be operable, e.g., in response to a tilt angle input, to rotate the scanning module about an additional axis that is transverse to the spin axis. Further example embodiments include an orientation sensor installed on the main body of the unmanned movable object. Some embodiments also provide a controller that is configured to receive an orientation signal from the orientation sensor and, based at least in part on the orientation signal, determine a tilt value for the tilt angle input for the tilting device in the motion mechanism.
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