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CN102023003A - Unmanned helicopter three-dimensional positioning and mapping method based on laser detection and image recognition - Google Patents

Unmanned helicopter three-dimensional positioning and mapping method based on laser detection and image recognition Download PDF

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Publication number
CN102023003A
CN102023003A CN 201010297558 CN201010297558A CN102023003A CN 102023003 A CN102023003 A CN 102023003A CN 201010297558 CN201010297558 CN 201010297558 CN 201010297558 A CN201010297558 A CN 201010297558A CN 102023003 A CN102023003 A CN 102023003A
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China
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laser
depopulated helicopter
flight
image recognition
distance
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CN 201010297558
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Chinese (zh)
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王冠林
朱纪洪
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Tsinghua University
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Tsinghua University
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Abstract

The invention relates to an unmanned helicopter three-dimensional positioning and mapping method based on laser detection and image recognition, which belongs to the technical field of application of unmanned aerial vehicles. A distance measurement sensor based on laser detection and image recognition, an altimetric sensor and a flight control computer are comprised, wherein the distance measurement sensor consists of a vehicle-mounted camera and a laser emitter and used for detecting the distance from the unmanned helicopter to obstacles around. The distance measurement sensor is used for detecting and measuring distance for the around environment of the unmanned helicopter by means of changing the angle of pitch and the angle of yaw. The altimetric sensor is used for measuring the flight altitude from the unmanned helicopter to the ground. The distance measurement data obtained from the measurement under different angles of altitude, angles of yaw and flight altitudes can realize three-dimensional synchronous positioning and mapping of unknown environment by the unmanned helicopter. In the invention, the around environment can be rapidly, simply and reliably detected during the flying by carrying the distance measurement sensor based on laser detection and image recognition on the unmanned helicopter.

Description

Depopulated helicopter three-dimensional localization and mapping method based on laser acquisition and image recognition
Technical field
The present invention is used for the method that depopulated helicopter positions and surveys at complicated circumstances not known, can realize three-dimensional synchronized positioning and the mapping of depopulated helicopter in complicated circumstances not known accurately.Be mainly used in technical fields such as Aero-Space, unmanned plane and robot.
Background technology
Three-dimensional synchronized positioning in complicated circumstances not known and mapping are one of important intelligent functions of depopulated helicopter, and fundamental purpose is finished location, detection and mapping in circumstances not known, and auxiliary depopulated helicopter carries out the flight of height autonomy-oriented.Traditional three-dimensional synchronized positioning and mapping flight are many to be finished under landform detection radar auxiliary.Because landform detection radar weight is big, small-sized depopulated helicopter is difficult to equipment.Therefore, depopulated helicopter adopts laser radar usually.Yet laser radar can only obtain two-dimensional localization and surveying and mapping data.Carry out three-dimensional localization and detection if desired, then depopulated helicopter must change of flight height, to finish location and the detection under the differing heights.For the flight of depopulated helicopter in circumstances not known, the change of flight height may cause the collision with barrier.In addition, laser radar costs an arm and a leg, weight is bigger, is not the optimal selection of depopulated helicopter.
Because common depopulated helicopter all has airborne video camera, height sensor and flight-control computer usually.The present invention by adding a generating laser, makes generating laser, airborne video camera form the distance measuring sensor based on laser acquisition and image recognition on the basis of the said equipment.Subsequently, under the cooperation of height sensor and flight-control computer, by making airborne video camera and generating laser carry out synchronous deflection in pitch orientation and yaw direction, can real-time detection and obtain depopulated helicopter and peripheral obstacle between distance and height off the ground.According to detection range, detection angle and flying height, can obtain depopulated helicopter apart from the distance of surrounding environment and the database of detection angle, thereby obtain the depopulated helicopter Three-dimensional Numeric Map of circumstances not known on every side, and then realize three-dimensional synchronized positioning and mapping.Compare with traditional landform detection radar (100Kg level), weight of the present invention light (50g level) can be by depopulated helicopter, and especially small-sized depopulated helicopter is entrained; Compare with laser radar, the present invention need not to change the flying height of depopulated helicopter, and the angle of pitch and the crab angle that only need to change generating laser can realize three-dimensional synchronized positioning and detection, can increase the flight safety of depopulated helicopter so greatly.In addition, the present invention has made full use of the original airborne equipment of depopulated helicopter, only needs to increase a generating laser and gets final product.Therefore, simple in structure, cheap, the easy advantage of repacking that the present invention has, and do not add the hardware of complex and expensive, few based on software upgrading to the depopulated helicopter weightening finish, and can be used for assisting depopulated helicopter to carry out the flight of height autonomy-oriented.
Summary of the invention
The object of the present invention is to provide a kind of method that makes depopulated helicopter in complicated circumstances not known, realize high-precision three-dimensional synchronized positioning and mapping.
The invention is characterized in, contain: based on distance measuring sensor, height sensor and the flight-control computer of laser acquisition and image recognition, wherein, distance measuring sensor based on laser acquisition and image recognition is made up of airborne video camera and generating laser, be used to survey the distance D between depopulated helicopter and the peripheral obstacle, height sensor is used to measure the flying height H of depopulated helicopter, wherein:
The course angle Ψ of angle of pitch Θ by changing generating laser, generating laser utilizes its emitted laser that the surrounding environment of depopulated helicopter is carried out scanning probe; When laser radiation to around barrier the time, can produce laser spot thereon; Airborne video camera photographs laser spot, and video is sent to flight-control computer; Flight-control computer can calculate the distance D of depopulated helicopter apart from peripheral obstacle according to the position of luminous point in this video; Flight-control computer can be known the flying height H of depopulated helicopter apart from ground by height sensor; According to generating laser under each angle of pitch Θ, course angle Ψ and flying height H condition, measure apart from obstacle distance D, can obtain the Three-dimensional Numeric Map of circumstances not known around the depopulated helicopter, thereby realize three-dimensional synchronized positioning and mapping; And the depopulated helicopter fuselage can solve by the yawed flight of depopulated helicopter blocking that generating laser institute emitted laser causes.
The invention has the advantages that: simple in structure, cheap, repacking is easy to advantage, and does not add the hardware of complex and expensive, and is few to the depopulated helicopter weightening finish based on software upgrading, and can be used for assisting depopulated helicopter to carry out the flight of height autonomy-oriented.Compare with traditional landform detection radar (100Kg level), weight of the present invention light (50g level) can be entrained by depopulated helicopter; Compare with laser radar, the present invention need not to change the flying height of depopulated helicopter, and the angle of pitch and the crab angle that only need to change generating laser can realize three-dimensional synchronized positioning and detection, can increase the flight safety of depopulated helicopter so greatly.In addition, the present invention has made full use of the original airborne equipment of depopulated helicopter, only needs to increase a generating laser and gets final product.
Description of drawings
Fig. 1 is based on the depopulated helicopter three-dimensional localization of laser acquisition and image recognition and the schematic diagram (side view) of mapping method.
Fig. 2 is based on the depopulated helicopter three-dimensional localization of laser acquisition and image recognition and the schematic diagram (vertical view) of mapping method.
In Fig. 1 and Fig. 2,1. depopulated helicopter, 2. flight-control computer, 3. based on the distance measuring sensor of laser acquisition and image recognition, 4. airborne video camera, 5. generating laser, 6. laser, the 7. laser spot of laser radiation on target, 8. height sensor.
Embodiment
Need collaborative the finishing of distance measuring sensor (3), height sensor (8) and flight-control computer (2) three based on the depopulated helicopter three-dimensional localization of laser acquisition and image recognition and mapping method based on laser acquisition and image recognition.Wherein, be used to survey distance D between depopulated helicopter (1) and the peripheral obstacle based on the distance measuring sensor (3) of laser acquisition and image recognition, height sensor (8) is used to measure the flying height H of depopulated helicopter (1), flight-control computer (2) is used for the calculating sensor data, and finishes three-dimensional localization and the mapping of depopulated helicopter (1) in complicated circumstances not known.
Distance measuring sensor (3) based on laser acquisition and image recognition is made up of airborne video camera (4) and generating laser (5).The whole deflection synchronously of airborne video camera (4) and generating laser (5), and send taken real-time video to flight-control computer (2).According to the position of laser spot (7) in video, flight-control computer (2) can calculate the distance D between depopulated helicopter (1) and the peripheral obstacle.
The course angle Ψ of angle of pitch Θ by changing generating laser (5), generating laser (5) utilizes its emitted laser (6), and depopulated helicopter (1) environment is on every side scanned.When laser (6) when shining peripheral obstacle, can produce laser spot (7) on its surface.Airborne video camera (4) photographs laser spot (7), and video is sent to flight-control computer (2).Flight-control computer (2) can calculate the distance D of depopulated helicopter (1) apart from peripheral obstacle according to the position of laser spot (7) in camera plane in this video.Flight-control computer (2) can be known the flying height H of depopulated helicopter (1) apart from ground by height sensor (8).
Inevitably, the fuselage of depopulated helicopter (1) can cause necessarily generating laser (5) institute's emitted laser (6) and block, and this can solve by the yawed flight of depopulated helicopter (1).
According to generating laser (5) under each angle of pitch Θ, course angle Ψ and depopulated helicopter (1) flying height H condition, measure apart from obstacle distance D, can obtain depopulated helicopter (1) apart from the distance of surrounding environment and the database of detection angle.Thereby can obtain depopulated helicopter (1) Three-dimensional Numeric Map of circumstances not known (spherical coordinates) on every side, and then realize three-dimensional synchronized positioning and the mapping of depopulated helicopter (1) in circumstances not known.

Claims (1)

1. based on the depopulated helicopter three-dimensional localization and the mapping method of laser acquisition and image recognition, it is characterized in that, contain: based on distance measuring sensor, height sensor and the flight-control computer of laser acquisition and image recognition, wherein, distance measuring sensor based on laser acquisition and image recognition is made up of airborne video camera and generating laser, be used to survey the distance D between depopulated helicopter and the peripheral obstacle, height sensor is used to measure the flying height H of depopulated helicopter, wherein:
Relative position between airborne video camera and the generating laser is fixed, and can wholely rotate synchronously; By rotation, can change the course angle Ψ of the angle of pitch Θ of generating laser based on the distance measuring sensor of laser acquisition and image recognition around pitch axis and course axle; The course angle Ψ of angle of pitch Θ by changing generating laser, generating laser utilizes its emitted laser that the surrounding environment of depopulated helicopter is carried out scanning probe; When laser radiation to around barrier the time, can produce laser spot on its surface; Airborne video camera photographs laser spot, and video is sent to flight-control computer; Flight-control computer can calculate the distance D of depopulated helicopter apart from this barrier according to the position of luminous point in this video; Flight-control computer can be known the flying height H of depopulated helicopter apart from ground by height sensor; According to generating laser under each angle of pitch Θ, course angle Ψ and unmanned helicopter flight height H condition, measure apart from obstacle distance D, can obtain depopulated helicopter apart from the distance of surrounding environment and the database of detection angle, thereby obtain the depopulated helicopter Three-dimensional Numeric Map of circumstances not known on every side, and then realize three-dimensional synchronized positioning and the mapping of depopulated helicopter in circumstances not known; And the depopulated helicopter fuselage can solve by the yawed flight of depopulated helicopter blocking that generating laser institute emitted laser causes.
CN 201010297558 2010-09-29 2010-09-29 Unmanned helicopter three-dimensional positioning and mapping method based on laser detection and image recognition Pending CN102023003A (en)

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Cited By (28)

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CN103673978A (en) * 2013-12-10 2014-03-26 苏州市峰之火数码科技有限公司 Scanning type aerial surveying and mapping instrument
CN103673979A (en) * 2013-12-10 2014-03-26 苏州市峰之火数码科技有限公司 Aerial photographing device used for continuous plotting
CN103968810A (en) * 2014-05-06 2014-08-06 天津全华时代航天科技发展有限公司 Precise surveying and mapping system for unmanned aerial vehicles and data acquisition method of precise surveying and mapping system
CN104062977A (en) * 2014-06-17 2014-09-24 天津大学 Full-autonomous flight control method for quadrotor unmanned aerial vehicle based on vision SLAM
CN104391507A (en) * 2014-10-09 2015-03-04 清华大学 Control method and system of unmanned aerial vehicle, and unmanned aerial vehicle
CN104730523A (en) * 2015-03-04 2015-06-24 中国商用飞机有限责任公司 Method for displaying terrain information based on meteorological radar
CN105094143A (en) * 2015-08-27 2015-11-25 泉州装备制造研究所 Unmanned aerial vehicle based map display method and apparatus
CN105492985A (en) * 2014-09-05 2016-04-13 深圳市大疆创新科技有限公司 Multi-sensor environment map building
CN105571588A (en) * 2016-03-10 2016-05-11 赛度科技(北京)有限责任公司 Method for building three-dimensional aerial airway map of unmanned aerial vehicle and displaying airway of three-dimensional aerial airway map
CN105698742A (en) * 2016-02-29 2016-06-22 北方民族大学 Quick land area measurement device based on unmanned aerial vehicle and measurement method thereof
CN105759829A (en) * 2016-04-12 2016-07-13 深圳市龙云创新航空科技有限公司 Laser radar-based mini-sized unmanned plane control method and system
CN106005383A (en) * 2016-06-02 2016-10-12 中国矿业大学(北京) Underground roadway high-precision three-dimensional model scanning device and method
CN106323242A (en) * 2016-08-03 2017-01-11 北京奇虎科技有限公司 Space structure detection method and device for unmanned aerial vehicle
CN107000833A (en) * 2016-12-26 2017-08-01 深圳市大疆创新科技有限公司 Unmanned plane
CN107132583A (en) * 2017-06-07 2017-09-05 嘉兴扬光电科技有限公司 A kind of laser scanning barrier generation method detected for unmanned plane
US10001778B2 (en) 2014-09-05 2018-06-19 SZ DJI Technology Co., Ltd Velocity control for an unmanned aerial vehicle
US10029789B2 (en) 2014-09-05 2018-07-24 SZ DJI Technology Co., Ltd Context-based flight mode selection
CN108897342A (en) * 2018-08-22 2018-11-27 江西理工大学 For the positioning and tracing method and system of the civilian multi-rotor unmanned aerial vehicle fast moved
CN109085852A (en) * 2018-09-20 2018-12-25 清华四川能源互联网研究院 A kind of flying robot's system suitable for high-rise non-flat configuration
CN109143167A (en) * 2017-06-28 2019-01-04 杭州海康机器人技术有限公司 A kind of complaint message acquisition device and method
CN109211185A (en) * 2017-06-30 2019-01-15 北京臻迪科技股份有限公司 A kind of flight equipment, the method and device for obtaining location information
US10240930B2 (en) 2013-12-10 2019-03-26 SZ DJI Technology Co., Ltd. Sensor fusion
CN109828274A (en) * 2019-01-07 2019-05-31 深圳市道通智能航空技术有限公司 Adjust the method, apparatus and unmanned plane of the main detection direction of airborne radar
CN110081861A (en) * 2019-06-03 2019-08-02 淮南矿业(集团)有限责任公司 A kind of quick mapping system of laser based on image recognition and mapping method
WO2020247212A1 (en) * 2019-06-04 2020-12-10 FLIR Unmanned Aerial Systems AS 3d localization and mapping system and method
CN113359197A (en) * 2021-06-03 2021-09-07 河北省地震局 High-precision superposition imaging method for shallow curved earth surface
WO2022121024A1 (en) * 2020-12-10 2022-06-16 中国科学院深圳先进技术研究院 Unmanned aerial vehicle positioning method and system based on screen optical communication
WO2023082255A1 (en) * 2021-11-15 2023-05-19 深圳市大疆创新科技有限公司 Unmanned aerial vehicle control method, unmanned aerial vehicle and storage medium

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CN103673978A (en) * 2013-12-10 2014-03-26 苏州市峰之火数码科技有限公司 Scanning type aerial surveying and mapping instrument
CN103673979A (en) * 2013-12-10 2014-03-26 苏州市峰之火数码科技有限公司 Aerial photographing device used for continuous plotting
US10240930B2 (en) 2013-12-10 2019-03-26 SZ DJI Technology Co., Ltd. Sensor fusion
CN103968810A (en) * 2014-05-06 2014-08-06 天津全华时代航天科技发展有限公司 Precise surveying and mapping system for unmanned aerial vehicles and data acquisition method of precise surveying and mapping system
CN104062977A (en) * 2014-06-17 2014-09-24 天津大学 Full-autonomous flight control method for quadrotor unmanned aerial vehicle based on vision SLAM
CN104062977B (en) * 2014-06-17 2017-04-19 天津大学 Full-autonomous flight control method for quadrotor unmanned aerial vehicle based on vision SLAM
US10001778B2 (en) 2014-09-05 2018-06-19 SZ DJI Technology Co., Ltd Velocity control for an unmanned aerial vehicle
US10845805B2 (en) 2014-09-05 2020-11-24 SZ DJI Technology Co., Ltd. Velocity control for an unmanned aerial vehicle
US10421543B2 (en) 2014-09-05 2019-09-24 SZ DJI Technology Co., Ltd. Context-based flight mode selection
US10429839B2 (en) 2014-09-05 2019-10-01 SZ DJI Technology Co., Ltd. Multi-sensor environmental mapping
US10029789B2 (en) 2014-09-05 2018-07-24 SZ DJI Technology Co., Ltd Context-based flight mode selection
CN105492985A (en) * 2014-09-05 2016-04-13 深圳市大疆创新科技有限公司 Multi-sensor environment map building
US11914369B2 (en) 2014-09-05 2024-02-27 SZ DJI Technology Co., Ltd. Multi-sensor environmental mapping
US10901419B2 (en) 2014-09-05 2021-01-26 SZ DJI Technology Co., Ltd. Multi-sensor environmental mapping
US11370540B2 (en) 2014-09-05 2022-06-28 SZ DJI Technology Co., Ltd. Context-based flight mode selection
CN104391507B (en) * 2014-10-09 2017-04-19 深圳清华大学研究院 Control method and system of unmanned aerial vehicle, and unmanned aerial vehicle
CN104391507A (en) * 2014-10-09 2015-03-04 清华大学 Control method and system of unmanned aerial vehicle, and unmanned aerial vehicle
CN104730523A (en) * 2015-03-04 2015-06-24 中国商用飞机有限责任公司 Method for displaying terrain information based on meteorological radar
CN104730523B (en) * 2015-03-04 2017-09-15 中国商用飞机有限责任公司 Method for displaying terrain information based on meteorological radar
CN105094143A (en) * 2015-08-27 2015-11-25 泉州装备制造研究所 Unmanned aerial vehicle based map display method and apparatus
CN105698742A (en) * 2016-02-29 2016-06-22 北方民族大学 Quick land area measurement device based on unmanned aerial vehicle and measurement method thereof
CN105698742B (en) * 2016-02-29 2018-12-21 北方民族大学 A kind of quick land area measuring device and measurement method based on unmanned plane
CN105571588A (en) * 2016-03-10 2016-05-11 赛度科技(北京)有限责任公司 Method for building three-dimensional aerial airway map of unmanned aerial vehicle and displaying airway of three-dimensional aerial airway map
CN105759829A (en) * 2016-04-12 2016-07-13 深圳市龙云创新航空科技有限公司 Laser radar-based mini-sized unmanned plane control method and system
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CN108897342B (en) * 2018-08-22 2020-01-07 江西理工大学 Positioning and tracking method and system for fast-moving civil multi-rotor unmanned aerial vehicle
CN109085852B (en) * 2018-09-20 2020-05-08 清华四川能源互联网研究院 Flying robot system suitable for high-rise uneven structure
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CN110081861A (en) * 2019-06-03 2019-08-02 淮南矿业(集团)有限责任公司 A kind of quick mapping system of laser based on image recognition and mapping method
CN110081861B (en) * 2019-06-03 2021-06-29 淮南矿业(集团)有限责任公司 Laser rapid mapping system and mapping method based on image recognition
WO2020247212A1 (en) * 2019-06-04 2020-12-10 FLIR Unmanned Aerial Systems AS 3d localization and mapping system and method
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CN113359197B (en) * 2021-06-03 2024-01-23 河北省地震局 Curved surface superposition imaging method suitable for shallow high precision
CN113359197A (en) * 2021-06-03 2021-09-07 河北省地震局 High-precision superposition imaging method for shallow curved earth surface
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Application publication date: 20110420