Patents by Inventor Qingquan LI
Qingquan LI has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11796299Abstract: A pipeline three-dimensional curve measuring robot and implementation method therefor. The measuring robot includes an electronic bin, sliding rods, wheel bracket, walking wheels arranged on wheel bracket, odometer wheels arranged on sliding rod on one side and encoders; the electronic bin is internally provided with an inertia measurement unit, collection control module and power supply module; when measuring, the measuring robot is controlled to move back and forth in a pipeline collecting measuring data; comparing measured data with three-dimensional curve data at pipeline reference moment to obtain deformation quantity of pipeline three-dimensional curve.Type: GrantFiled: November 28, 2019Date of Patent: October 24, 2023Assignee: SHENZHEN UNIVERSITYInventors: Qingquan Li, Zhipeng Chen, Yu Yin, Xiang Cheng, Jiasong Zhu
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Publication number: 20230260151Abstract: Disclosed are a method for simultaneous localization and mapping, device, system and storage medium.Type: ApplicationFiled: April 15, 2021Publication date: August 17, 2023Inventors: Xuewan Li, Weicheng Xiong, Liang Zhang, Shuang Yang, Qingquan Li
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Patent number: 11679670Abstract: A two-gear bridge driving system. A speed changer of the two-gear bridge driving system includes a dual-planetary gear mechanism, the dual-planetary gear mechanism has only one sun gear, the sun gear is fixed with respect to a speed changer input gear, and the sun gear and one planetary gear in the dual gear are always in an engagement state. Compared with the two-gear bridge driving system in the prior art, the two-gear bridge driving system provided here is simpler in structure, lower in costs and lower in weight, and good NVH control is easily achieved. Also provided is a vehicle including the two-gear bridge driving system.Type: GrantFiled: July 17, 2020Date of Patent: June 20, 2023Assignee: Schaeffler Technologies AG & Co. KGInventors: Lei Liu, Qingquan Li
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Patent number: 11586863Abstract: Provided are an image fusion classification method and device. The method includes that: a three-dimensional weight matrix of a hyperspectral image is obtained by use of a Support Vector Machine (SVM) classifier (101); superpixel segmentation is performed on the hyperspectral image to obtain K superpixel images, K being a positive integer (102); the three-dimensional weight matrix is regularized by use of a superpixel-image-based segmentation method to obtain a regular matrix (103); and a class that a sample belongs to is determined according to the regular matrix (104).Type: GrantFiled: March 22, 2021Date of Patent: February 21, 2023Assignee: SHENZHEN UNIVERSITYInventors: Sen Jia, Bin Deng, Jiasong Zhu, Lin Deng, Qingquan Li
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Publication number: 20220250468Abstract: A two-gear bridge driving system. A speed changer of the two-gear bridge driving system includes a dual-planetary gear mechanism, the dual-planetary gear mechanism has only one sun gear, the sun gear is fixed with respect to a speed changer input gear, and the sun gear and one planetary gear in the dual gear are always in an engagement state. Compared with the two-gear bridge driving system in the prior art, the two-gear bridge driving system provided here is simpler in structure, lower in costs and lower in weight, and good NVH control is easily achieved. Also provided is a vehicle including the two-gear bridge driving system.Type: ApplicationFiled: July 17, 2020Publication date: August 11, 2022Applicant: Schaeffler Technologies AG & Co. KGInventors: Lei LIU, Qingquan LI
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Publication number: 20220196759Abstract: The present disclosure provides a system and a method for measuring hot-spot temperature of a transformer, wherein the measurement system comprises a processor, an oscilloscope and a plurality of ultrasonic sensors, wherein the ultrasonic sensors are oppositely arranged on an outer wall of a transformer oil tank and electrically connected with the oscilloscope, and the oscilloscope is electrically connected with the processor; the ultrasonic sensors receive signals transmitted by the oppositely arranged ultrasonic sensors and transmit them to the oscilloscope. The method, by applying an ultrasonic wave to measure the hot-spot temperature of a transformer in real time, solves the problems that methods in the prior art are susceptible to the external environment, have short service life and cannot correctly measure the internal temperature of the transformer.Type: ApplicationFiled: August 27, 2021Publication date: June 23, 2022Applicant: Shandong UniversityInventors: Dongxin HE, Qingjing ZANG, Qingquan LI, Wenjie GONG, Xinyan FENG, Han LIU
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Publication number: 20210209426Abstract: Provided are an image fusion classification method and device. The method includes that: a three-dimensional weight matrix of a hyperspectral image is obtained by use of a Support Vector Machine (SVM) classifier (101); superpixel segmentation is performed on the hyperspectral image to obtain K superpixel images, K being a positive integer (102); the three-dimensional weight matrix is regularized by use of a superpixel-image-based segmentation method to obtain a regular matrix (103); and a class that a sample belongs to is determined according to the regular matrix (104).Type: ApplicationFiled: March 22, 2021Publication date: July 8, 2021Inventors: Sen JIA, Bin DENG, Jiasong ZHU, Lin DENG, Qingquan LI
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Patent number: 10931871Abstract: A method including: putting a pre-set detection apparatus in a pipeline to be detected, collecting, every pre-set time, movement information about and pipeline image thereof; at each collection moment, calculating, according to movement information collected, first position where detection apparatus is located; calculating, according to pipeline image photographed, second position where detection apparatus is located; determining, according to first position and second position, position where detection apparatus is located so as to position pipeline according to position at each collection moment. By performing position information extraction by means of inertial navigation and video combined positioning algorithm, accurate positioning of pipeline position is realized, so as to accurately position crack inside pipeline according to photographed image and positioned pipeline position.Type: GrantFiled: November 3, 2017Date of Patent: February 23, 2021Assignee: SHENZHEN UNIVERSITYInventors: Qingquan Li, Jiasong Zhu, Chisheng Wang, Zhipeng Chen
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Publication number: 20200400419Abstract: A pipeline three-dimensional curve measuring robot and implementation method therefor. The measuring robot includes an electronic bin, sliding rods, wheel bracket, walking wheels arranged on wheel bracket, odometer wheels arranged on sliding rod on one side and encoders; the electronic bin is internally provided with an inertia measurement unit, collection control module and power supply module; when measuring, the measuring robot is controlled to move back and forth in a pipeline collecting measuring data; comparing measured data with three-dimensional curve data at pipeline reference moment to obtain deformation quantity of pipeline three-dimensional curve.Type: ApplicationFiled: November 28, 2019Publication date: December 24, 2020Applicant: SHENZHEN UNIVERSITYInventors: Qingquan LI, Zhipeng CHEN, Yu YIN, Xiang CHENG, Jiasong ZHU
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Patent number: 10755132Abstract: A method for extracting a surface deformation feature of an object based on linear scanning three-dimensional point cloud is disclosed comprising: performing data acquisition by using a three-dimensional measurement sensor based on line structured light, and obtaining a three-dimensional point cloud data of a surface of the object after data pre-processing; eliminating influences of abnormal data and textures on extraction of sectional main profiles, to accurately obtain the sectional main profiles of the object; obtaining a binary image based on deformation feature points extracted from sections, in conjunction with a deformation feature knowledge base, and preliminarily positioning a deformation region based on sub-block images to obtain a set of target morphology sub-blocks; then performing a morphological operation on deformation feature points in the set of target morphology sub-blocks, and generating a deformation region of confidence ROC, and then performing a region growth to extract a target using geType: GrantFiled: January 15, 2016Date of Patent: August 25, 2020Assignee: WUHAN WUDA ZOYON SCIENCE AND TECHNOLOGY CO., LTDInventors: Qingquan Li, Min Cao, Dejin Zhang, Hong Lin, Ying Chen
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Publication number: 20200177805Abstract: A method including: putting a pre-set detection apparatus in a pipeline to be detected, collecting, every pre-set time, movement information about and pipeline image thereof; at each collection moment, calculating, according to movement information collected, first position where detection apparatus is located; calculating, according to pipeline image photographed, second position where detection apparatus is located; determining, according to first position and second position, position where detection apparatus is located so as to position pipeline according to position at each collection moment. By performing position information extraction by means of inertial navigation and video combined positioning algorithm, accurate positioning of pipeline position is realized, so as to accurately position crack inside pipeline according to photographed image and positioned pipeline position.Type: ApplicationFiled: November 3, 2017Publication date: June 4, 2020Applicant: SHENZHEN UNIVERSITYInventors: Qingquan LI, Jiasong ZHU, Chisheng WANG, Zhipeng CHEN
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Patent number: 10571256Abstract: A three-dimensional measurement sensor based on line structured light, comprising a sensing head and a controller. The sensing head is used for collecting section data and attitude information of its own, and matching the section data with the self attitude information. The sensing head comprises a three-dimensional camera, an attitude sensor, a laser and a control sub-board, wherein the three-dimensional camera is installed at a certain angle relative to the laser, and acquires elevation and grey information about an object surface corresponding to laser rays using a triangulation principle. The attitude sensor, the three-dimensional camera and the laser are installed on the same rigid plane, and the attitude sensor reflects measurement attitude of the three-dimensional camera and the laser in real time. The controller is used for measuring and controlling the sensing head, performing data processing transmission and supporting external control.Type: GrantFiled: August 26, 2016Date of Patent: February 25, 2020Assignee: WUHAN WUDA ZOYON SCIENCE AND TECHNOLOGY CO., LTDInventors: Qingquan Li, Dejin Zhang, Min Cao, Xinlin Wang, Hong Lin
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Patent number: 10489903Abstract: The present invention discloses a stepwise refinement detection method for pavement cracks, processing pavement images comprising the following primary steps: extracting and processing marking lines, extracting ROA, adaptive threshold segmentation based on ROA, extracting ROC and region growth based on ROC direction feature weighting.Type: GrantFiled: April 27, 2015Date of Patent: November 26, 2019Assignee: WUHAN WUDA ZOYON SCIENCE AND TECHNOLOGY CO., LTD.Inventors: Qingquan Li, Dejin Zhang, Min Cao, Hong Lin
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Publication number: 20190234728Abstract: A three-dimensional measurement sensor based on line structured light, comprising a sensing head and a controller. The sensing head is used for collecting section data and attitude information of its own, and matching the section data with the self attitude information. The sensing head comprises a three-dimensional camera, an attitude sensor, a laser and a control sub-board, wherein the three-dimensional camera is installed at a certain angle relative to the laser, and acquires elevation and grey information about an object surface corresponding to laser rays using a triangulation principle. The attitude sensor, the three-dimensional camera and the laser are installed on the same rigid plane, and the attitude sensor reflects measurement attitude of the three-dimensional camera and the laser in real time. The controller is used for measuring and controlling the sensing head, performing data processing transmission and supporting external control.Type: ApplicationFiled: August 26, 2016Publication date: August 1, 2019Applicant: WUHAN WUDA ZOYON SCIENCE AND TECHNOLOGY CO., LTDInventors: Qingquan LI, Dejin ZHANG, Min CAO, Xinlin WANG, Hong LIN
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Publication number: 20190197340Abstract: A method for extracting a surface deformation feature of an object based on linear scanning three-dimensional point cloud is disclosed comprising: performing data acquisition by using a three-dimensional measurement sensor based on line structured light, and obtaining a three-dimensional point cloud data of a surface of the object after data pre-processing; eliminating influences of abnormal data and textures on extraction of sectional main profiles, to accurately obtain the sectional main profiles of the object; obtaining a binary image based on deformation feature points extracted from sections, in conjunction with a deformation feature knowledge base, and preliminarily positioning a deformation region based on sub-block images to obtain a set of target morphology sub-blocks; then performing a morphological operation on deformation feature points in the set of target morphology sub-blocks, and generating a deformation region of confidence ROC, and then performing a region growth to extract a target using geType: ApplicationFiled: January 25, 2016Publication date: June 27, 2019Applicant: WUHAN WUDA ZOYON SCIENCE AND TECHNOLOGY CO., LTD.Inventors: Qingquan LI, Min CAO, Dejin ZHANG, Hong LIN, Ying CHEN
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Publication number: 20180137612Abstract: The present invention discloses a stepwise refinement detection method for pavement cracks, processing pavement images comprising the following primary steps: extracting and processing marking lines, extracting ROA, adaptive threshold segmentation based on ROA, extracting ROC and region growth based on ROC direction feature weighting.Type: ApplicationFiled: April 27, 2015Publication date: May 17, 2018Inventors: Qingquan LI, Dejin ZHANG, Min CAO, LIN HONG