Patents by Inventor CEN LU
CEN LU 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: 10365399Abstract: The present invention provides a method for infrared imaging detection and positioning of an underground tubular facility in a plane terrain. Demodulation processing is performed on an original infrared image formed after stratum modulation is generated on the underground tubular facility according to an energy diffusion Gaussian model of the underground tubular facility, so as to obtain a target image of the underground tubular facility.Type: GrantFiled: September 2, 2014Date of Patent: July 30, 2019Assignee: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Tianxu Zhang, Wenxuan Ma, Cen Lu, Longwei Hao, Yuehuan Wang, Nong Sang, Weidong Yang, Hu Zhu
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Publication number: 20190222075Abstract: A low-voltage direct current motor has a stator and a rotor rotatable relative to the stator. The rotor includes a rotary shaft, a rotor core fixed to the shaft, a commutator fixed to the shaft adjacent to the rotor core, and rotor windings wound about poles of the rotor core and electrically connected to the commutator. The stator includes a round housing, a permanent magnet mounted to an inner surface of the housing, and brushes disposed in sliding contact with the commutator. An input voltage of the motor is in the range of 7 to 36V, and a ratio of an outer diameter of the rotor core to an outer diameter of the housing is in the range of 67% to 75%.Type: ApplicationFiled: December 21, 2018Publication date: July 18, 2019Inventors: Ming Cen LU, Chi Keung LAW, Ngai Ming LEUNG
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Patent number: 10218230Abstract: A low-voltage direct current motor has a stator and a rotor rotatable relative to the stator. The rotor includes a rotary shaft, a rotor core fixed to the shaft, a commutator fixed to the shaft adjacent to the rotor core, and rotor windings wound about poles of the rotor core and electrically connected to the commutator. The stator includes a round housing, a permanent magnet mounted to an inner surface of the housing, and brushes disposed in sliding contact with the commutator. An input voltage of the motor is in the range of 7 to 36V, and a ratio of an outer diameter of the rotor core to an outer diameter of the housing is in the range of 67% to 75%.Type: GrantFiled: June 17, 2016Date of Patent: February 26, 2019Assignee: Johnson Electric International AGInventors: Ming Cen Lu, Chi Keung Law, Ngai Ming Leung
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Patent number: 9741120Abstract: An infrared imaging detection and positioning method for an underground building in a planar land surface environment comprises: obtaining an original infrared image g0 formed after stratum modulation is performed on an underground building, and determining a local infrared image g of a general position of the underground building in the original infrared image g0; setting an iteration termination condition, and setting an initial value h0 of a Gaussian thermal diffusion function; using the local infrared image g as an initial target image f0, and performing iteration solution of a thermal expansion function hn and a target image fn by using a maximum likelihood estimation algorithm according to the initial value h0 of the Gaussian thermal diffusion function; and determining whether the iteration termination condition is met, if the iteration termination condition is met, using the target image fn obtained by means of iteration solution this time as a final target image f; and if the iteration termination conType: GrantFiled: September 2, 2014Date of Patent: August 22, 2017Assignee: Huazhong University of Science and TechnologyInventors: Tianxu Zhang, Longwei Hao, Cen Lu, Wenxuan Ma, Yuehuan Wang, Nong Sang, Weidong Yang
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Patent number: 9625611Abstract: The present invention discloses a method for detecting, recognizing, and positioning a zonal underground target in a mountain land environment by detecting a ridge position in the mountain land environment and carrying out energy correction. The method belongs to the interdisciplinary field of pattern recognition, remote sensing technology and terrain analysis. The zonal underground target can cause energy abnormity when the heat field thereof is different from that of a mountain mass, and the heat island effect of the ridge can also cause the energy of the mountain mass to be abnormal. However, the energy abnormity caused by the heat island effect is essentially different from the energy abnormity caused by the zonal underground target in the aspect of mode.Type: GrantFiled: February 10, 2015Date of Patent: April 18, 2017Assignee: Huazhong University of Science and TechnologyInventors: Tianxu Zhang, Cen Lu, Yuehuan Wang, Weidong Yang, Nong Sang, Wenxuan Ma, Longwei Hao
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Patent number: 9599165Abstract: A fastening device for a rolling bearing includes a bearing mounting portion disposed at an end of a motor housing, a rolling bearing received in the mounting portion, and a retainer ring disposed between an inner peripheral surface of the mounting portion and a peripheral surface of an outer ring of the rolling bearing. The rolling bearing is fastened to the motor housing by the retainer ring. The retainer ring is resiliently deformable in the radial direction of the rolling bearing.Type: GrantFiled: July 30, 2015Date of Patent: March 21, 2017Assignee: JOHNSON ELECTRIC S.A.Inventors: Ming Cen Lu, James Ching Sik Lau, Xi Ping Yang, Chi Keung Law
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Patent number: 9582885Abstract: A zonal underground structure detection method based on sun shadow compensation is provided, which belongs to the crossing field of remote sensing technology, physical geography and pattern recognition, and is used to carry out compensation processing after a shadow is detected, to improve the identification rate of zonal underground structure detection and reduce the false alarm rate. The present invention comprises steps of acquiring DEM terrain data of a designated area, acquiring an image shadow position by using DEM, a solar altitude angle and a solar azimuth angle, processing and compensating a shadow area, and detecting a zonal underground structure after the shadow area is corrected.Type: GrantFiled: February 10, 2015Date of Patent: February 28, 2017Assignee: Huazhong University of Science and TechnologyInventors: Tianxu Zhang, Longwei Hao, Wenxuan Ma, Cen Lu, Heng Yao, Yuehuan Wang, Nong Sang, Weidong Yang
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Patent number: 9582862Abstract: The invention discloses a direction-adaptive image deblurring method, comprising steps of: (1) defining a minimum cost function for deblurring an image by direction-adaptive total variation regularization; (2) converting the unconstrained minimization problem in step (1) to a constrained problem by auxiliary variables d1=Hu, d2=?xu and d3=?yu; (3) obtaining a new minimum cost function from the constrained problem in step (2) by introducing penalty terms; and (4) converting the minimization problem in step (3) to an alternating minimization problem about u, d1, d2 and d3, where a minimum of a variable is calculated as other variables are determined, and obtaining a deblurred image by solving the alternating minimization problem by an alternative and iterative minimization process.Type: GrantFiled: February 10, 2015Date of Patent: February 28, 2017Assignee: Huazhong University of Science and TechnologyInventors: Tianxu Zhang, Gang Zhou, Ao Zhong, Liangliang Wang, Ming Li, Cen Lu, Wen Zhang, Zhiyong Zuo
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Patent number: 9564722Abstract: An audio jack connector (100) includes an insulative housing (1) having a number of passageways (111) and a number of slits (112) beside the passageways, and a number of contacts (2) retained in the passageways. Each contact includes a retaining portion (22) retained in the passageway, a contacting portion (21) extending inwardly from the retaining portion, and a horizontal portion (23) bent outwardly from the retaining portion and being located in a bottom face (11) of the insulative housing. The audio jack connector includes a glue plate (3) assembled to the bottom face of the insulative housing. The audio jack connector includes a glue frame (4) having a base portion (41) seamlessly sandwiched between the glue plate and the insulative housing, and a number of protrusions (42) seamlessly sandwiched between the horizontal portions of contacts and the insulative housing. The protrusions are received in the slits.Type: GrantFiled: August 17, 2015Date of Patent: February 7, 2017Assignee: FOXCONN INTERCONNECT TECHNOLOGY LIMITEDInventors: Qiang Ning, Cen Lu
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Patent number: 9547809Abstract: A card connector (100) includes an insulative housing (1) and a number of contacts (2) retained in the insulative housing. The insulative housing defines a receiving space (10), a front-and-rear direction, and a left-and-right direction perpendicular to the front-and-rear direction. Each contact includes a soldering portion (23), two retaining portions (24), and a curved portion (25) connecting between the two retaining portions. The curved portion includes a contacting portion (251) arching upwardly to protrude into the receiving space and two flexible portions (252) integrally formed at two opposite ends of the contacting portion. The two flexible portions are centrosymmetry with respect to the contacting portion.Type: GrantFiled: July 1, 2015Date of Patent: January 17, 2017Assignee: FOXCONN INTERCONNECT TECHNOLOGY LIMITEDInventors: Cen Lu, Wang-Ke He, Wei-De Zhang
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Publication number: 20170003416Abstract: The present invention provides a method for infrared imaging detection and positioning of an underground tubular facility in a plane terrain. Demodulation processing is performed on an original infrared image formed after stratum modulation is generated on the underground tubular facility according to an energy diffusion Gaussian model of the underground tubular facility, so as to obtain a target image of the underground tubular facility.Type: ApplicationFiled: September 2, 2014Publication date: January 5, 2017Applicant: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Tianxu ZHANG, Wenxuan MA, Cen LU, Longwei HAO, Yuehuan WANG, Nong SANG, Weidong YANG, Hu ZHU
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Publication number: 20160372981Abstract: A low-voltage direct current motor has a stator and a rotor rotatable relative to the stator. The rotor includes a rotary shaft, a rotor core fixed to the shaft, a commutator fixed to the shaft adjacent to the rotor core, and rotor windings wound about poles of the rotor core and electrically connected to the commutator. The stator includes a round housing, a permanent magnet mounted to an inner surface of the housing, and brushes disposed in sliding contact with the commutator. An input voltage of the motor is in the range of 7 to 36V, and a ratio of an outer diameter of the rotor core to an outer diameter of the housing is in the range of 67% to 75%.Type: ApplicationFiled: June 17, 2016Publication date: December 22, 2016Inventors: Ming Cen LU, Chi Keung LAW, Ngai Ming LEUNG
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Publication number: 20160371841Abstract: A zonal underground structure detection method based on sun shadow compensation is provided, which belongs to the crossing field of remote sensing technology, physical geography and pattern recognition, and is used to carry out compensation processing after a shadow is detected, to improve the identification rate of zonal underground structure detection and reduce the false alarm rate. The present invention comprises steps of acquiring DEM terrain data of a designated area, acquiring an image shadow position by using DEM, a solar altitude angle and a solar azimuth angle, processing and compensating a shadow area, and detecting a zonal underground structure after the shadow area is corrected.Type: ApplicationFiled: February 10, 2015Publication date: December 22, 2016Inventors: Tianxu ZHANG, Longwei HAO, Wenxuan MA, Cen LU, Heng YAO, Yuehuan WANG, Nong SANG, Weidong YANG
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Publication number: 20160364509Abstract: The present invention discloses a method for stimulating a temperature field of a mountain mass containing a distributed underground facility under the influence of a seepage effect.Type: ApplicationFiled: February 10, 2015Publication date: December 15, 2016Inventors: Tianxu ZHANG, Wenxuan MA, Longwei HAO, Cen LU, Heng YAO, Yuehuan WANG, Nong SANG, Weidong YANG
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Publication number: 20160356920Abstract: The present invention discloses a method for detecting, recognizing, and positioning a zonal underground target in a mountain land environment by detecting a ridge position in the mountain land environment and carrying out energy correction. The method belongs to the interdisciplinary field of pattern recognition, remote sensing technology and terrain analysis. The zonal underground target can cause energy abnormity when the heat field thereof is different from that of a mountain mass, and the heat island effect of the ridge can also cause the energy of the mountain mass to be abnormal. However, the energy abnormity caused by the heat island effect is essentially different from the energy abnormity caused by the zonal underground target in the aspect of mode.Type: ApplicationFiled: February 10, 2015Publication date: December 8, 2016Inventors: Tianxu ZHANG, Cen LU, Yuehuan WANG, Weidong YANG, Nong SANG, Wenxuan MA, Longwei HAO
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Publication number: 20160321788Abstract: The invention discloses a direction-adaptive image deblurring method, comprising steps of: (1) defining a minimum cost function for deblurring an image by direction-adaptive total variation regularization; (2) converting the unconstrained minimization problem in step (1) to a constrained problem by auxiliary variables d1=Hu, d2=?xu and d3=?yu; (3) obtaining a new minimum cost function from the constrained problem in step (2) by introducing penalty terms; and (4) converting the minimization problem in step (3) to an alternating minimization problem about u, d1, d2 and d3, where a minimum of a variable is calculated as other variables are determined, and obtaining a deblurred image by solving the alternating minimization problem by an alternative and iterative minimization process.Type: ApplicationFiled: February 10, 2015Publication date: November 3, 2016Applicant: Huazhong University of Science and TechnologyInventors: Tianxu ZHANG, Gang ZHOU, Ao ZHONG, Liangliang WANG, Ming LI, Cen LU, Wen ZHANG, Zhiyong ZUO
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Publication number: 20160321795Abstract: An infrared imaging detection and positioning method for an underground building in a planar land surface environment comprises: obtaining an original infrared image g0 formed after stratum modulation is performed on an underground building, and determining a local infrared image g of a general position of the underground building in the original infrared image g0; setting an iteration termination condition, and setting an initial value h0 of a Gaussian thermal diffusion function; using the local infrared image g as an initial target image f0, and performing iteration solution of a thermal expansion function hn and a target image fn by using a maximum likelihood estimation algorithm according to the initial value h0 of the Gaussian thermal diffusion function; and determining whether the iteration termination condition is met, if the iteration termination condition is met, using the target image fn obtained by means of iteration solution this time as a final target image f; and if the iteration termination conType: ApplicationFiled: September 2, 2014Publication date: November 3, 2016Inventors: Tianxu ZHANG, Longwei HAO, Cen LU, Wenxuan MA, Yuehuan WANG, Nong SANG, Weidong YANG
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Patent number: 9454692Abstract: A method for identifying and positioning a building using mountain-based outline region restraint, including steps of: (1) obtaining a real-time image, detecting a mountain-based outline of the real-time image, and extending the mountain-based outline thereby obtaining a mountain-based outline restraint region, (2) conducting morphological enhancement and background suppression on the image in the mountain-based outline restraint region, (3) conducting recursive segmentation in the mountain-based outline restraint region thereby transforming an image obtained in step (2) into a binary image, (4) extracting local regions of interest of a target building in the mountain-based outline restraint region according to the binary image, and (5) directly identifying and positioning the target building in the local regions of interest.Type: GrantFiled: May 15, 2015Date of Patent: September 27, 2016Assignee: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGYInventors: Tianxu Zhang, Li Zhang, Fan Peng, Heng Yao, Cen Lu, Yayun Zheng, Yaxun Wei, Cong Xiao
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Publication number: 20160049755Abstract: An audio jack connector (100) includes an insulative housing (1) having a number of passageways (111) and a number of slits (112) beside the passageways, and a number of contacts (2) retained in the passageways. Each contact includes a retaining portion (22) retained in the passageway, a contacting portion (21) extending inwardly from the retaining portion, and a horizontal portion (23) bent outwardly from the retaining portion and being located in a bottom face (11) of the insulative housing. The audio jack connector includes a glue plate (3) assembled to the bottom face of the insulative housing. The audio jack connector includes a glue frame (4) having a base portion (41) seamlessly sandwiched between the glue plate and the insulative housing, and a number of protrusions (42) seamlessly sandwiched between the horizontal portions of contacts and the insulative housing. The protrusions are received in the slits.Type: ApplicationFiled: August 17, 2015Publication date: February 18, 2016Inventors: QIANG NING, CEN LU
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Publication number: 20160032980Abstract: A fastening device for a rolling bearing includes a bearing mounting portion disposed at an end of a motor housing, a rolling bearing received in the mounting portion, and a retainer ring disposed between an inner peripheral surface of the mounting portion and a peripheral surface of an outer ring of the rolling bearing. The rolling bearing is fastened to the motor housing by the retainer ring. The retainer ring is resiliently deformable in the radial direction of the rolling bearing.Type: ApplicationFiled: July 30, 2015Publication date: February 4, 2016Inventors: MING CEN LU, JAMES CHING SIK LAU, XI PING YANG, CHI KEUNG LAW