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公开(公告)号：US20220147754A1
公开(公告)日：2022-05-12
申请号：US17463523
申请日：2021-08-31
Applicant: UBTECH ROBOTICS CORP LTD
Inventor： Rui Guo , Zhichao Liu , Zhanjia Bi , Yongsheng Zhao
IPC: G06K9/62
Abstract: A relocation method and a mobile machine using the same are provided. The method includes: obtaining a global map and a current scan map of a target scene where a mobile machine is located, and generating a local sub-map based on the global map; obtaining a black boundary in the local sub-map, determining a length and a curve complexity of the black boundary, and determining a weight of the black boundary based on the length and the curve complexity of the black boundary; determining an estimated pose and a target black boundary based on the local sub-map and the current scan image, and obtaining a matching value between the current scan image and the local sub-map based on a weight of the target black boundary; and determining the estimated pose as a relocated pose of the mobile machine in response to the matching value being larger than a preset threshold.
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公开(公告)号：US10771925B1
公开(公告)日：2020-09-08
申请号：US16699763
申请日：2019-12-02
Applicant: UBTECH ROBOTICS CORP LTD
Inventor： Yongsheng Zhao , Wanjun He , Yu Tang , Youjun Xiong , Jianxin Pang
IPC: H04W4/02 , H04B17/27 , H04W4/029 , H04W48/10 , H04B17/318
Abstract: The present disclosure provides localization methods and a system using the same. One of the methods includes: broadcasting a ranging frame in a awake state of a localization tag; obtaining a response frame returned by the first anchor according to the ranging frame; updating the ranging anchor list according to the response frame; and calculating a distance between the localization tag and the first anchor based on a time of broadcasting the ranging frame, a time of receiving the response frame, the time of the first anchor receiving the ranging frame, and the time of the first anchor transmitting the response frame. In such a manner, the localization tag is enabled to switch the anchor for ranging in time according to the updated ranging anchor list during movement, thereby automatically ranging with the nearby anchor.
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公开(公告)号：US20200209876A1
公开(公告)日：2020-07-02
申请号：US16396783
申请日：2019-04-29
Applicant: UBTECH ROBOTICS CORP LTD.
Inventor： Yongsheng Zhao , Youjun Xiong , Longbiao Bai , Jianxin Pang
Abstract: The present disclosure provides a positioning method and an apparatus with the same. The method includes: obtaining, by die sensor set, current track node information of a current track node of a map on which the to-be-positioned device is located, where the current track node information includes a color of the current track node; and determining position information of the to-be-positioned device based on the track node information. In the above manner, the positioning of the to-be-positioned device in a specific map can be realized.
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公开(公告)号：US11498227B2
公开(公告)日：2022-11-15
申请号：US16709931
申请日：2019-12-11
Applicant: UBTECH ROBOTICS CORP LTD
Inventor： Yongsheng Zhao , Zhichao Liu , Youjun Xiong
Abstract: The present disclosure provides a robot pose determination method including: collecting laser frames; calculating a current pose of the robot in a map pointed by a first pointer based on the laser frames, and obtaining an amount of the laser frames having been inserted into the map pointed by the first pointer; inserting the laser frames into a map pointed by the first pointer, if less than a first threshold; inserting the laser frames into the map pointed by the first pointer and a map pointed by a second pointer, if greater than or equal to the first threshold and less than a second threshold; and pointing the first pointer to the map pointed by the second pointer, pointing the second pointer to a newly created empty map, and inserting the laser frames into the map pointed by the first pointer, if equal to the second threshold.
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公开(公告)号：US11416719B2
公开(公告)日：2022-08-16
申请号：US17012016
申请日：2020-09-03
Applicant: UBTECH ROBOTICS CORP LTD
Inventor： Chenchen Jiang , Zhichao Liu , Yongsheng Zhao , Yu Tang , Jianxin Pang , Youjun Xiong
Abstract: The present disclosure provides a localization method as well as a helmet and a computer readable storage medium using the same. The method includes: extracting first feature points from a target image; obtaining inertial information of the carrier, and screening the first feature points based on the inertial information to obtain second feature points; triangulating the second feature points of the target image to generate corresponding initial three-dimensional map points, if the target image is a key frame image; performing a localization error loopback calibration on the initial three-dimensional map points according to at least a predetermined constraint condition to obtain target three-dimensional map points; and determining a positional point of the specific carrier according to the target three-dimensional map points. In this manner, the accuracy of the localization of a dynamic object such as a person when moving can be improved.
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Patent Agency Ranking
公开(公告)号：US11260529B2
公开(公告)日：2022-03-01
申请号：US16584968
申请日：2019-09-27
Applicant: UBTECH ROBOTICS CORP LTD
Inventor： Jian Zhang , Youjun Xiong , Zhichao Liu , Longbiao Bai , Chenchen Jiang , Simin Zhang , Hongjian Liu , Zhanjia Bi , Yongsheng Zhao , Jianxin Pang
Abstract: The present disclosure provides a virtual rail based cruise method as well as an apparatus and a robot using the same. The method includes: obtaining a digital map including a virtual rail; performing a path planning based on the virtual rail, a current position of the robot, and a cruise end point to obtain a cruise path; and obtaining parameter(s) of the robot by calculating through a preset path tracking algorithm based on the cruise path and the current position of the robot, and controlling the robot based on the control parameter(s). In this manner, the problems of the prior art that needs to lay a rail or set an auxiliary device which causes high cost and inconvenience in usage as well as the rail needs to be re-laid or the auxiliary device needs to be reinstalled when the route is to be changed can be solved.
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公开(公告)号：US20210190513A1
公开(公告)日：2021-06-24
申请号：US16843923
申请日：2020-04-09
Applicant: UBTECH ROBOTICS CORP LTD
Inventor： Yongsheng Zhao , Zhichao Liu , Jianxin Pang , Youjun Xiong
Abstract: The present disclosure discloses a navigation map updating method as well as an apparatus, and a robot using the same. The method includes: controlling a robot to move along a designated path after a successful relocalization of the robot, and recording key frame data of each frame on the designated path and a corresponding pose; creating a new navigation map, and copying information in an original navigation map into the new navigation map; and covering the key frame data of each frame on the designated path onto the new navigation map to obtain an updated navigation map. In this manner, there is no need for the user to manipulate the robot to recreate the map at the environment where the robot is operated, which saves a lot of time and manpower.
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公开(公告)号：US10667091B1
公开(公告)日：2020-05-26
申请号：US16396691
申请日：2019-04-28
Applicant: UBTECH ROBOTICS CORP LTD
Inventor： Yongsheng Zhao , Youjun Xiong , Yu Tang
Abstract: The present disclosure provides a wireless positioning method as well as a server and a storage medium with the same. The method includes: obtaining a current ranging value between a first positioning device and a second positioning device, where there is no obstruction between the first positioning device and the second positioning device; determining a distance of the first positioning device and the second positioning device in a depth direction of a tunnel based on the current ranging value; and obtaining a current coordinate of the second positioning device based on the distance. In the above-mentioned manner, the automatic updating of the coordinate of the reference base station in the tunnel can be realized, the times of repeated measurements of the base station are reduced, thereby improving the construction efficiency of the tunnel and saving working loads.
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公开(公告)号：US20200096343A1
公开(公告)日：2020-03-26
申请号：US16396690
申请日：2019-04-28
Applicant: UBTECH ROBOTICS CORP LTD
Inventor： Yongsheng Zhao , Youjun Xiong
Abstract: The present disclosure provides a positioning method and a robot with the same. The method is applied to a robot having a camera, the method includes: taking a photo of a predetermined area, wherein the predetermined area comprises a marker pattern area; identifying at least two marker points of the marker pattern area and obtaining first coordinate data of each marker point; calculating second coordinate data of the robot in a world coordinate based on parameters of the camera and the first coordinate data of the marker points; and calculating angle data of the robot in the world coordinate based on the first coordinate data of the marker points and the second coordinate data of the robot in the world coordinate. Through the above-mentioned positioning method, the robot can quickly perform monocular visual positioning and reduce the calculation amount of positioning.
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公开(公告)号：US20240215788A1
公开(公告)日：2024-07-04
申请号：US18372003
申请日：2023-09-22
Applicant: UBTECH ROBOTICS CORP LTD
Inventor： SIMIN ZHANG , Yongsheng Zhao , Jichao Jiao , Jiahao Ji
CPC classification number: A47L11/4011 , A47L9/2805 , A47L9/2852 , G05D1/0214 , A47L2201/04 , G05D2201/0203 , G05D2201/0215
Abstract: A collided position determination method, a computer-readable storage medium, and a robot are provided. The method includes: obtaining, from a collision sensor of the robot, a triggered signal corresponding to a collision of the robot; determining at least two candidate positions of the collision based on the triggered signal corresponding to the collision; obtaining a motion trajectory of the robot after the collision; and obtaining a collided position by screening each of the candidate positions of the collision according to the motion trajectory. In this manner, when the robot collides during its movement, the collision signal generated by the collision sensor of the robot can accurately mark the collided position, thereby reducing the probability of the robot colliding again at the same position.
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