SG11201706581WA - Guidance system and automatic control for vehicles - Google Patents
Guidance system and automatic control for vehiclesInfo
- Publication number
- SG11201706581WA SG11201706581WA SG11201706581WA SG11201706581WA SG11201706581WA SG 11201706581W A SG11201706581W A SG 11201706581WA SG 11201706581W A SG11201706581W A SG 11201706581WA SG 11201706581W A SG11201706581W A SG 11201706581WA SG 11201706581W A SG11201706581W A SG 11201706581WA
- Authority
- SG
- Singapore
- Prior art keywords
- vehicles
- automatic control
- guidance system
- guidance
- automatic
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G5/00—Traffic control systems for aircraft, e.g. air-traffic control [ATC]
- G08G5/003—Flight plan management
- G08G5/0034—Assembly of a flight plan
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C39/00—Aircraft not otherwise provided for
- B64C39/02—Aircraft not otherwise provided for characterised by special use
- B64C39/024—Aircraft not otherwise provided for characterised by special use of the remote controlled vehicle type, i.e. RPV
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64U—UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
- B64U10/00—Type of UAV
- B64U10/10—Rotorcrafts
- B64U10/13—Flying platforms
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/38—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system
- G01S19/39—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system the satellite radio beacon positioning system transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/42—Determining position
- G01S19/48—Determining position by combining or switching between position solutions derived from the satellite radio beacon positioning system and position solutions derived from a further system
- G01S19/49—Determining position by combining or switching between position solutions derived from the satellite radio beacon positioning system and position solutions derived from a further system whereby the further system is an inertial position system, e.g. loosely-coupled
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D1/00—Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots
- G05D1/0011—Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots associated with a remote control arrangement
- G05D1/0027—Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots associated with a remote control arrangement involving a plurality of vehicles, e.g. fleet or convoy travelling
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D1/00—Control of position, course, altitude or attitude of land, water, air or space vehicles, e.g. using automatic pilots
- G05D1/10—Simultaneous control of position or course in three dimensions
- G05D1/101—Simultaneous control of position or course in three dimensions specially adapted for aircraft
- G05D1/104—Simultaneous control of position or course in three dimensions specially adapted for aircraft involving a plurality of aircrafts, e.g. formation flying
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G5/00—Traffic control systems for aircraft, e.g. air-traffic control [ATC]
- G08G5/0004—Transmission of traffic-related information to or from an aircraft
- G08G5/0013—Transmission of traffic-related information to or from an aircraft with a ground station
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G5/00—Traffic control systems for aircraft, e.g. air-traffic control [ATC]
- G08G5/003—Flight plan management
- G08G5/0039—Modification of a flight plan
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G5/00—Traffic control systems for aircraft, e.g. air-traffic control [ATC]
- G08G5/0047—Navigation or guidance aids for a single aircraft
- G08G5/0069—Navigation or guidance aids for a single aircraft specially adapted for an unmanned aircraft
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G5/00—Traffic control systems for aircraft, e.g. air-traffic control [ATC]
- G08G5/0073—Surveillance aids
- G08G5/0082—Surveillance aids for monitoring traffic from a ground station
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64U—UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
- B64U2101/00—UAVs specially adapted for particular uses or applications
- B64U2101/60—UAVs specially adapted for particular uses or applications for transporting passengers; for transporting goods other than weapons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64U—UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
- B64U2201/00—UAVs characterised by their flight controls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64U—UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
- B64U2201/00—UAVs characterised by their flight controls
- B64U2201/10—UAVs characterised by their flight controls autonomous, i.e. by navigating independently from ground or air stations, e.g. by using inertial navigation systems [INS]
- B64U2201/102—UAVs characterised by their flight controls autonomous, i.e. by navigating independently from ground or air stations, e.g. by using inertial navigation systems [INS] adapted for flying in formations
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
- G01S5/0257—Hybrid positioning
- G01S5/0263—Hybrid positioning by combining or switching between positions derived from two or more separate positioning systems
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Remote Sensing (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Computer Networks & Wireless Communication (AREA)
- Mechanical Engineering (AREA)
- Traffic Control Systems (AREA)
- Navigation (AREA)
- Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITRN20150006 | 2015-02-19 | ||
PCT/IB2016/050830 WO2016132295A1 (en) | 2015-02-19 | 2016-02-17 | Guidance system and automatic control for vehicles |
Publications (1)
Publication Number | Publication Date |
---|---|
SG11201706581WA true SG11201706581WA (en) | 2017-09-28 |
Family
ID=54105830
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SG11201706581WA SG11201706581WA (en) | 2015-02-19 | 2016-02-17 | Guidance system and automatic control for vehicles |
Country Status (11)
Country | Link |
---|---|
US (1) | US10650684B2 (en) |
EP (1) | EP3259729A1 (en) |
JP (1) | JP2018514834A (en) |
KR (1) | KR20180036914A (en) |
CN (1) | CN107567606B (en) |
AU (1) | AU2016221319A1 (en) |
CA (1) | CA2976861A1 (en) |
IL (1) | IL253955A0 (en) |
RU (1) | RU2017132146A (en) |
SG (1) | SG11201706581WA (en) |
WO (1) | WO2016132295A1 (en) |
Families Citing this family (42)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10853756B2 (en) * | 2016-03-02 | 2020-12-01 | International Business Machines Corporation | Vehicle identification and interception |
US11762384B2 (en) | 2016-04-24 | 2023-09-19 | Flytrex Aviation Ltd. | System and method for dynamically arming a failsafe on a delivery drone |
US12007764B2 (en) * | 2016-04-24 | 2024-06-11 | Flytrex Aviation Ltd. | System and method for aerial traffic management of unmanned aerial vehicles |
US11226619B2 (en) * | 2016-04-24 | 2022-01-18 | Flytrex Aviation Ltd. | Dynamically arming a safety mechanism on a delivery drone |
US10482418B2 (en) | 2016-09-28 | 2019-11-19 | Federal Express Corporation | Systems and methods for inspecting a delivery vehicle using a paired inspection drone |
US10304343B2 (en) | 2017-02-24 | 2019-05-28 | At&T Mobility Ii Llc | Flight plan implementation, generation, and management for aerial devices |
US10090909B2 (en) | 2017-02-24 | 2018-10-02 | At&T Mobility Ii Llc | Maintaining antenna connectivity based on communicated geographic information |
EP3376330B1 (en) * | 2017-03-17 | 2020-11-04 | TTTech Auto AG | Fault-tolerant method for detecting faults in an electronic system for controlling a controlled object |
EP3376390B1 (en) * | 2017-03-17 | 2019-10-30 | TTTech Auto AG | Fault tolerant method for controlling an autonomous controlled object |
US20180349831A1 (en) * | 2017-03-22 | 2018-12-06 | Geoffrey Harris | Method and System for Brokering Land Surveys |
EP3610346A1 (en) * | 2017-04-14 | 2020-02-19 | Telefonaktiebolaget LM Ericsson (Publ) | Optimal unmanned aerial vehicle flight route planning based on quality-of-service requirements for data, telemetry, and command and control requirements in 3gpp networks |
US10591911B2 (en) * | 2017-06-22 | 2020-03-17 | Korea University Research And Business Foundation | Apparatus and method for controlling drone formation |
CN107403206A (en) * | 2017-07-21 | 2017-11-28 | 北京图森未来科技有限公司 | Realize method and system, the relevant device of vehicle automatic loading and unloading goods |
JP6992312B2 (en) * | 2017-08-04 | 2022-01-13 | オムロン株式会社 | Simulation equipment, control equipment, and simulation programs |
IL253970B (en) * | 2017-08-13 | 2022-02-01 | Israel Aerospace Ind Ltd | Automatic takeoff and landing by an aircraft |
US11412475B2 (en) * | 2017-09-14 | 2022-08-09 | Telefonaktiebolaget Lm Ericsson (Publ) | Technique for verifying a geographical position of a UAV |
JP7013757B2 (en) | 2017-09-20 | 2022-02-01 | 富士フイルムビジネスイノベーション株式会社 | Information processing equipment, information processing systems and programs |
JP6634423B2 (en) * | 2017-09-26 | 2020-01-22 | Kddi株式会社 | Operation management method and operation management device |
KR102429823B1 (en) * | 2017-09-29 | 2022-08-05 | 프라운호퍼 게젤샤프트 쭈르 푀르데룽 데어 안겐반텐 포르슝 에. 베. | A system for non-terrestrial communications |
US11061414B2 (en) * | 2017-12-20 | 2021-07-13 | General Electric Company | Fleet mission advisor |
US11260985B2 (en) * | 2018-04-06 | 2022-03-01 | Qualcomm Incorporated | Detecting when a robotic vehicle is stolen |
US10916150B2 (en) * | 2018-05-03 | 2021-02-09 | Arkidan Systems Inc. | Computer-assisted aerial surveying and navigation |
US11128563B2 (en) * | 2018-06-22 | 2021-09-21 | Sorenson Ip Holdings, Llc | Incoming communication routing |
DE102018120013A1 (en) * | 2018-08-16 | 2020-02-20 | Autel Robotics Europe Gmbh | METHOD, DEVICE AND SYSTEM FOR TRANSMITTING TRAVEL INFORMATION, UNMANNED AIRCRAFT, GROUND STATION AND COMPUTER READABLE STORAGE MEDIUM |
CN109116720A (en) * | 2018-08-31 | 2019-01-01 | 百度在线网络技术(北京)有限公司 | Long-range control method, device and the server of automatic driving vehicle |
CN108877228B (en) * | 2018-08-31 | 2021-04-09 | 辽宁博昊土地科技发展有限公司 | A unmanned aerial vehicle for scenic spot guides |
JP7172464B2 (en) * | 2018-11-07 | 2022-11-16 | トヨタ自動車株式会社 | Vehicles and vehicle operation methods |
KR102188278B1 (en) * | 2018-12-11 | 2020-12-08 | 한국공항공사 | Boarding bridge and method for controlling boarding bridge |
CN109600712B (en) * | 2018-12-27 | 2020-11-20 | 沈阳航空航天大学 | Self-adaptive routing method based on software defined internet of vehicles |
CN109714830B (en) * | 2019-01-09 | 2021-06-01 | 深圳市道通智能航空技术股份有限公司 | Flight log uploading method and device, mobile terminal and unmanned aerial vehicle |
EP3709208A1 (en) * | 2019-03-14 | 2020-09-16 | Visteon Global Technologies, Inc. | Method and control unit for detecting a region of interest |
US11861957B2 (en) | 2019-05-09 | 2024-01-02 | Argo AI, LLC | Time master and sensor data collection for robotic system |
RU2732678C1 (en) * | 2019-09-17 | 2020-09-21 | Общество с ограниченной ответственностью "ИННОВАТИКА+" | Temperature and humidity monitoring and control system during storage and transportation of perishable cargoes |
CN112578806A (en) * | 2019-09-27 | 2021-03-30 | 上海佐理供应链管理有限公司 | Logistics transportation system and method based on Internet of things |
IL277350B2 (en) * | 2020-09-14 | 2024-06-01 | Israel Aerospace Ind Ltd | Positioning using satellite beacon |
US11829909B2 (en) | 2020-11-06 | 2023-11-28 | Sap Se | Route finder for integrated planning |
US11775925B2 (en) | 2020-11-06 | 2023-10-03 | Sap Se | Route planning engine using unique location identifiers |
CN114115287B (en) * | 2021-12-06 | 2023-09-22 | 西安航空学院 | Unmanned vehicle-unmanned aerial vehicle air-ground collaborative patrol and guide system |
WO2023170592A1 (en) * | 2022-03-09 | 2023-09-14 | Ierom S.R.L. | Apparatus for remotely control aircraft's flight |
US20230343101A1 (en) * | 2022-04-20 | 2023-10-26 | Ford Global Technologies, Llc | Systems And Methods For Providing A Vehicle-And-Drone-Based Security Service |
CN115022355B (en) * | 2022-04-27 | 2024-03-29 | 江苏氢枫能源装备有限公司 | Hydrogen energy unmanned aerial vehicle cloud service system for express delivery |
CN115617039B (en) * | 2022-09-15 | 2023-06-13 | 哈尔滨工程大学 | Event triggering-based distributed affine unmanned aerial vehicle formation controller construction method and unmanned aerial vehicle formation control method |
Family Cites Families (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5459469A (en) * | 1994-02-04 | 1995-10-17 | Stanford Telecommunications, Inc. | Air traffic surveillance and communication system |
CN1110764C (en) * | 1998-11-23 | 2003-06-04 | 黎明网络有限公司 | Integrated information service platform system and its method |
US20140254896A1 (en) * | 2011-07-18 | 2014-09-11 | Tiger T G Zhou | Unmanned drone, robot system for delivering mail, goods, humanoid security, crisis negotiation, mobile payments, smart humanoid mailbox and wearable personal exoskeleton heavy load flying machine |
US20100004798A1 (en) * | 2005-01-25 | 2010-01-07 | William Kress Bodin | Navigating a UAV to a next waypoint |
EP1910984A4 (en) * | 2005-06-21 | 2010-06-02 | United Parcel Service Inc | Systems and methods for providing personalized delivery services |
WO2007014574A1 (en) * | 2005-08-02 | 2007-02-08 | Galini Associates Ltd | System and method for controlling multiple services with restricted access |
US8374777B2 (en) * | 2005-12-19 | 2013-02-12 | International Business Machines Corporation | GPS equipped devices that utilize geographical navigation bundles |
US7581702B2 (en) * | 2006-06-09 | 2009-09-01 | Insitu, Inc. | Wirelessly controlling unmanned aircraft and accessing associated surveillance data |
CN101222659A (en) * | 2007-01-10 | 2008-07-16 | 金宝电子工业股份有限公司 | Navigation information sharing method and system |
US8178825B2 (en) * | 2007-10-29 | 2012-05-15 | Honeywell International Inc. | Guided delivery of small munitions from an unmanned aerial vehicle |
US8060295B2 (en) * | 2007-11-12 | 2011-11-15 | The Boeing Company | Automated separation manager |
WO2009125880A1 (en) * | 2008-04-10 | 2009-10-15 | Sk Marketing & Company Co., Ltd | System and method for call service, call server, user terminal and storage medium |
FR2935512B1 (en) * | 2008-08-26 | 2011-03-25 | Airbus France | COMMUNICATION DEVICE BETWEEN THE COMMERCIAL NAVIGATING PERSONNEL OF AN AIRCRAFT AND THE GROUND AND METHOD USING THE SAME |
US8626361B2 (en) * | 2008-11-25 | 2014-01-07 | Honeywell International Inc. | System and methods for unmanned aerial vehicle navigation |
SG171700A1 (en) * | 2008-12-19 | 2011-07-28 | Tele Atlas Bv | Dynamically mapping images on objects in a navigation system |
CN101477648A (en) * | 2008-12-25 | 2009-07-08 | 黄金龙 | Logistic combined system and implementation process thereof |
US8818696B2 (en) * | 2011-03-23 | 2014-08-26 | Ge Aviation Systems Llc | Method and system for aerial vehicle trajectory management |
EP3564882B1 (en) * | 2011-11-15 | 2021-10-27 | Insitu, Inc. | Method for limiting flying range of an unmanned aerial vehicle |
CN103763117A (en) * | 2011-12-31 | 2014-04-30 | 华茂云天科技(北京)有限公司 | Service and operation management system |
US8874360B2 (en) * | 2012-03-09 | 2014-10-28 | Proxy Technologies Inc. | Autonomous vehicle and method for coordinating the paths of multiple autonomous vehicles |
US9384668B2 (en) * | 2012-05-09 | 2016-07-05 | Singularity University | Transportation using network of unmanned aerial vehicles |
US20140018979A1 (en) * | 2012-07-13 | 2014-01-16 | Honeywell International Inc. | Autonomous airspace flight planning and virtual airspace containment system |
CN102819950A (en) * | 2012-08-14 | 2012-12-12 | 王文静 | Carrying aid decision making system and method for traffic tool |
FR2998067B1 (en) * | 2012-11-12 | 2016-09-16 | Airbus Operations Sas | AIRCRAFT MANAGEMENT SYSTEM. |
CN103034906A (en) * | 2012-12-26 | 2013-04-10 | 上海市城市建设设计研究总院 | Multiplex mode traffic intermodal system based on cloud computing |
US8989922B2 (en) * | 2013-03-15 | 2015-03-24 | Azure Sky Group, LLC. | Modular drone and methods for use |
US9476962B2 (en) * | 2013-05-02 | 2016-10-25 | The Boeing Company | Device, system and methods using angle of arrival measurements for ADS-B authentication and navigation |
CN203376643U (en) * | 2013-07-26 | 2014-01-01 | 广西曼彻彼斯自动化设备有限公司 | Logistics track intelligent trolley safety system |
WO2014080387A2 (en) * | 2014-03-25 | 2014-05-30 | Alshdaifat, Wasfi | Rescue drone |
CN103914076B (en) * | 2014-03-28 | 2017-02-15 | 浙江吉利控股集团有限公司 | Cargo transferring system and method based on unmanned aerial vehicle |
-
2016
- 2016-02-17 CA CA2976861A patent/CA2976861A1/en active Pending
- 2016-02-17 RU RU2017132146A patent/RU2017132146A/en not_active Application Discontinuation
- 2016-02-17 SG SG11201706581WA patent/SG11201706581WA/en unknown
- 2016-02-17 KR KR1020177026222A patent/KR20180036914A/en unknown
- 2016-02-17 EP EP16718002.5A patent/EP3259729A1/en active Pending
- 2016-02-17 AU AU2016221319A patent/AU2016221319A1/en not_active Abandoned
- 2016-02-17 JP JP2017544669A patent/JP2018514834A/en active Pending
- 2016-02-17 US US15/551,604 patent/US10650684B2/en active Active
- 2016-02-17 CN CN201680011237.7A patent/CN107567606B/en active Active
- 2016-02-17 WO PCT/IB2016/050830 patent/WO2016132295A1/en active Application Filing
-
2017
- 2017-08-10 IL IL253955A patent/IL253955A0/en unknown
Also Published As
Publication number | Publication date |
---|---|
CN107567606A (en) | 2018-01-09 |
RU2017132146A (en) | 2019-03-19 |
AU2016221319A1 (en) | 2017-08-31 |
WO2016132295A1 (en) | 2016-08-25 |
EP3259729A1 (en) | 2017-12-27 |
IL253955A0 (en) | 2017-10-31 |
KR20180036914A (en) | 2018-04-10 |
CN107567606B (en) | 2021-01-08 |
US20180047295A1 (en) | 2018-02-15 |
CA2976861A1 (en) | 2016-08-25 |
JP2018514834A (en) | 2018-06-07 |
US10650684B2 (en) | 2020-05-12 |
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