-
公开(公告)号：US20200085667A1
公开(公告)日：2020-03-19
申请号：US16414926
申请日：2019-05-17
Inventor： Wenbin Chen , Tongtong Wei , Tiancheng Zhou , Shuang Wu , Caihua Xiong
Abstract: The disclosure belongs to the technical field of lower limb exoskeleton, and specifically discloses a hip-knee passive exoskeleton device based on clutch time-sharing control, comprising a waist support subassembly, connection subassemblies, thigh subassemblies, clutch subassemblies, shank subassemblies and elastic member subassemblies, the waist support subassembly is configured to be connected to the waist, the connection subassemblies are configured to include two connection subassemblies which are arranged in bilateral symmetry on two sides of the support subassembly, the thigh subassemblies are configured to include two thigh subassemblies which are respectively connected to the two connection subassemblies, the clutch subassemblies are configured to include two clutch subassemblies which are respectively mounted on the two thigh subassemblies, the shank subassemblies are configured to include two shank subassemblies which are arranged in bilateral symmetry below the two thigh subassemblies, the elastic member subassemblies are configured to include two elastic member subassemblies which are arranged in bilateral symmetry. The disclosure can assist the movements of the knee and hip joints, thereby improving the energy utilization efficiency and reducing the metabolic energy consumption of walking.
-
公开(公告)号：US10592736B2
公开(公告)日：2020-03-17
申请号：US16105005
申请日：2018-08-20
Inventor： Jiang Xiao , Yuxi Wang , Hai Jin , Mingxuan Ni
IPC: G06K9/00 , G06K9/03 , G06F40/232 , G06F40/20
Abstract: The invention provides a method for CSI-based fine-grained gesture recognition, wherein the method comprises the following steps: determining a start point, an end point, a velocity, a direction and/or an inflection point of at least one stroke gesture in multiple dimensions according to an eigenvalue of channel state information; dividing the strokes according to the start point, the end point, the velocity, the direction and/or the inflection point of the stroke using a machine learning method and forming a stroke sequence; building a stroke decipherment model according to frequencies of the strokes appearing in natural language rules and/or scientific language rules and/or connection rules between the strokes; and dividing and recognizing the stroke sequence as a letter sequence, a radical sequence, a numeral sequence and/or a pattern sequence conforming to the natural language rules and/or the scientific language rules using the stroke decipherment model. The present invention involves recognizing strokes of characters from finger gesture, and then recovering characters from the strokes, so as to enrich types of languages that can be recognized from finger gesture and enhance recognition accuracy of gesture writing.
-
公开(公告)号：US20200051753A1
公开(公告)日：2020-02-13
申请号：US16655271
申请日：2019-10-17
Inventor： Hongwei HAN , Anyi MEI , Shuang LIU , Xiaolei LI , Deyi ZHANG
Abstract: A ferroelectric enhanced solar cell, including a conductive substrate, and a hole blocking layer, a mesoporous nanocrystalline layer, a mesoporous spacer layer and a mesoporous back electrode sequentially deposited in that order on the conductive substrate. The mesopores of at least one of the mesoporous nanocrystalline layer, the mesoporous spacer layer and the mesoporous back electrode are filled with a photoactive material. At least one of the hole blocking layer, the mesoporous nanocrystalline layer and the mesoporous spacer layer includes a ferroelectric material or a ferroelectric nanocomposite.
-
公开(公告)号：US10525166B2
公开(公告)日：2020-01-07
申请号：US15889235
申请日：2018-02-06
Inventor： Shengmin Zhang , Yan Li , Hang Hao
Abstract: The invention relates to a selenium-doped hydroxyapatite and a preparation method thereof. The selenium-doped hydroxyapatite provided is a single crystal comprising a rod-like structure, a uniform morphology, and a good dispersibility. The preparation method comprises adding a mixed solution of a phosphate and a selenite dropwise to a mixed solution of a calcium salt and a dispersing agent, and reacting for 1.5-2.5 hrs at a controlled temperature of 80-90° C., to obtain a solution of a calcium phosphate amorphous precursor, followed by performing a hydrothermal reaction at 190-210° C., to obtain a selenium-doped hydroxyapatite comprising a rod-like structure. Compared with selenium-doped hydroxyapatite with severe agglomeration, the selenium-doped hydroxyapatite provided in the present invention comprises good dispersibility and able to have better prevention of clogging problem in human body when in use, thus having a good prospect using as a multi-functional new material for bone repair in patients as a repair material for bone defects, an anti-tumor, etc.
-
公开(公告)号：US10521888B2
公开(公告)日：2019-12-31
申请号：US16359990
申请日：2019-03-20
Inventor： Tianxu Zhang , Xuan Hou , Chuan Zhang , Li Liu , Quan Chen , Ao Zhong , Mingxing Xu , Yutian Zhou
Abstract: An aerothermal-radiation correction method, including: using a Gaussian surface to approximate a thermal radiation noise, performing a Fourier transform on the Gaussian surface so as to obtain a centralized spectrum of the thermal radiation noise, constructing a filter function H based on the centralized spectrum of the thermal radiation noise; performing a Fourier transform on the aerothermal-radiation degraded image f so as to obtain a centralized spectrum F, taking dot product of F and H to obtain a filtered spectrum G; and performing an inverse Fourier transform on filtered spectrum G to obtain a modulus, and acquire a corrected image. The method effectively removes background noise generated by aerothermal radiation, greatly improves image quality and image signal-to-noise ratio. The method features reduced computational complexity and a shorter operation time, and is suited for real-time processing.
-
Patent Agency Ranking
106.发明申请公开(公告)号：US20190312461A1
公开(公告)日：2019-10-10
申请号：US16178914
申请日：2018-11-02
Applicant: Guangdong Institute of Industrial Technology, Huazhong University of Science and Technology
Inventor： Haitao Zhang , Binbin Hu , Bin Liu , Zhiguo Cao , Jin Zhao , Housheng Su , Zhecheng Xu , Junfeng Ge , Tao Geng
Abstract: A method and system for cooperative charging between an unmanned aerial vehicle and an unmanned surface vessel includes: using the unmanned aerial vehicle to capture an image of the unmanned surface vessel; analyzing the relative position of a capturing device and the velocity of the unmanned surface vessel; controlling the unmanned aerial vehicle to approach the capturing device, and making the unmanned aerial vehicle to hover at a certain height within the capture range; detecting whether the unmanned aerial vehicle is within the capture range and, if within the range, using the unmanned surface vessel to capture the unmanned aerial vehicle or using the unmanned aerial vehicle to re-capture an image of the unmanned surface vessel; using the capturing device to adjust the position of the unmanned aerial vehicle and performing wireless charging.
-
公开(公告)号：US20190294267A1
公开(公告)日：2019-09-26
申请号：US16116468
申请日：2018-08-29
Inventor： Huan ZHAO , Hao LI , Han DING , Sijie YAN , Xiaoming ZHANG , Xiaojian ZHANG
IPC: G06F3/0354 , G01B5/008 , G01B3/00 , G01L5/22
Abstract: A complex surface three-coordinate measuring device includes a three-degree-of-freedom motion platform and a force control probe, the force control probe is fixedly mounted on the Z-axis sliding block, which is in the same direction as the X-axis direction and used to contact with the workpiece surface with constant force. A six-axis force sensor is used to collect the contact force between the stylus and the workpiece surface. In this method, the force control is realized in the measurement to make the stylus in constant force contact with the workpiece surface. The error compensation direction is determined according to the direction of the contact force, and then the effective radius of the stylus spherical head is compensated in this direction, thus the actual contact point of stylus and workpiece can be obtained.
-
公开(公告)号：US10424918B2
公开(公告)日：2019-09-24
申请号：US15491954
申请日：2017-04-19
Inventor： Li Ren , Siyuan Liang , Yuejin Tang , Ying Xu , Zhong Xia , Zuoshuai Wang , Jing Shi , Jingdong Li , Lihui Zhang , Sinian Yan , Zhangwei Yang , Yi Zhang
Abstract: A fault current limiter, including: an inductor, a direct current circuit breaker, a shunt resistor, and a first fixed resistor. The inductor includes wound superconducting wires. The direct current circuit breaker and the inductor are connected in series to form a series branch. The shunt resistor is connected in parallel to the series branch. The first fixed resistor is connected in parallel to the direct current circuit breaker.
-
109.发明授权公开(公告)号：US10365399B2
公开(公告)日：2019-07-30
申请号：US15106703
申请日：2014-09-02
Inventor： Tianxu Zhang , Wenxuan Ma , Cen Lu , Longwei Hao , Yuehuan Wang , Nong Sang , Weidong Yang , Hu Zhu
Abstract: 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. The method comprises: obtaining an original infrared image g formed after stratum modulation is generated on an underground tubular facility; setting an initial value h0 of a Gaussian thermal diffusion function according to the original infrared image g; using the original infrared image g as an initial target image f0, and performing, according to the initial value h0 of the Gaussian thermal diffusion function, iteration solution of a thermal diffusion function hn and a target image fn by by using a single-frame image blind deconvolution method based on a Bayesian theory; and determining whether an iteration termination condition is met, and if the iteration termination condition is met, determining that the target image fn obtained by means of iteration solution this time is a final target image f; and if the iteration termination condition is not met, continuing the iteration calculation. By means of the method, the display of the infrared image of the original underground tubular facility is clearer, and the real structure of the underground tubular facility can also be inverted.
-
公开(公告)号：US20190220958A1
公开(公告)日：2019-07-18
申请号：US16359990
申请日：2019-03-20
Inventor： Tianxu ZHANG , Xuan HOU , Chuan ZHANG , Li LIU , Quan CHEN , Ao ZHONG , Mingxing XU , Yutian ZHOU
Abstract: An aerothermal-radiation correction method, including: using a Gaussian surface to approximate a thermal radiation noise, performing a Fourier transform on the Gaussian surface so as to obtain a centralized spectrum of the thermal radiation noise, constructing a filter function H based on the centralized spectrum of the thermal radiation noise; performing a Fourier transform on the aerothermal-radiation degraded image f so as to obtain a centralized spectrum F, taking dot product of F and H to obtain a filtered spectrum G; and performing an inverse Fourier transform on filtered spectrum G to obtain a modulus, and acquire a corrected image. The method effectively removes background noise generated by aerothermal radiation, greatly improves image quality and image signal-to-noise ratio. The method features reduced computational complexity and a shorter operation time, and is suited for real-time processing.
-
-
-
-
-
-
-
-
-
Search Results
942
records
(took 0.028 seconds)
