公开(公告)号：US20180143224A1

公开(公告)日：2018-05-24

申请号：US15462831

申请日：2017-03-18

Applicant: University of Electronic Science and Technology of China

Inventor： Qi Huang ,  Arsalan Habib Khawaja ,  Ai Zheng ,  Shi Jing ,  Jian Li ,  Zhenyuan Zhang ,  Jianbo Yi

IPC: G01R15/20 ,  G01D5/14

CPC classification number: G01R15/148 ,  G01R19/2513

Abstract: The invention discloses a monitoring system for estimation of phase conductor parameters of overhead high voltage transmission lines. Particularly, these parameters include electric current, conductor clearance from ground and wind induced conductor motion. This is realized by utilizing magnetic field sensing at various points or of various components with state of art Tunnel Magneto resistive sensors. The measured data is then divided into two groups, where one group performs the reconstruction using magnetic field and the other group validates the reconstructed results. For each group, initial conductor to sensor position coefficients are stored in two different sensitivity matrices in memory. For a change in conductor spatial position, the sensitivity matrices are altered which is estimated for each group and then validated by comparison. Errors in the reconstruction process are minimized by sensor placement at optimal points which ensures the condition number remains close to unity.

公开(公告)号：US09921194B2

公开(公告)日：2018-03-20

申请号：US15164841

申请日：2016-05-25

Applicant: University of Electronic Science and Technology of China

Inventor： Xiaosong Du ,  Huan Yuan ,  Xulan Zhao ,  Penglin Wu ,  Yadong Jiang

IPC: G01N30/60 ,  G01N30/02

CPC classification number: G01N30/6086 ,  G01N30/6095 ,  G01N2030/025 ,  G01N2030/6056

Abstract: A wavy micro gas chromatography column includes a silicon substrate and a bonded glass cover. A micro channel having a rectangular cross section is etched on the silicon substrate and coated with a stationary phase film. A projection figure of the micro channel on the silicon substrate includes multiple regular wavy curves. Each wavy curve is formed through alternately connecting first upper arcs with first lower arcs. Because the groove has a curving structure, the carrier gas velocity is decreased as the increase of the arc angle, resulting in an improvement of the flow uniformity at the zones between two adjacent bends but also an enlarging nonsymmetric distribution at the bends. Thus, an optimal curving structure can make the overall flow more even, and in turn achieve a better separation performance compared to the straight channel columns. Meanwhile, a wavy channel realizes a longer column length on a given area.

公开(公告)号：US09905682B2

公开(公告)日：2018-02-27

申请号：US15372352

申请日：2016-12-07

Applicant: UNIVERSITY OF ELECTRONIC SCIENCE AND TECHNOLOGY OF CHINA ,  INSTITUTE OF ELECTRONIC AND INFORMATION ENGINEERING IN DONGGUAN, UESTC

Inventor： Jinping Zhang ,  Zehong Li ,  Jingxiu Liu ,  Min Ren ,  Bo Zhang ,  Zhaoji Li

IPC: H01L29/74 ,  H01L29/78 ,  H01L21/02 ,  H01L21/265 ,  H01L21/3065 ,  H01L29/10 ,  H01L29/40 ,  H01L29/66 ,  H01L29/747

CPC classification number: H01L29/7424 ,  H01L21/02233 ,  H01L21/26586 ,  H01L21/3065 ,  H01L29/0623 ,  H01L29/1095 ,  H01L29/407 ,  H01L29/408 ,  H01L29/66325 ,  H01L29/66386 ,  H01L29/7394 ,  H01L29/747 ,  H01L29/78

Abstract: A bidirectional Metal-Oxide-Semiconductor (MOS) device, including a P-type substrate, and an active region. The active region includes a drift region, a first MOS structure and a second MOS structure; the first MOS structure includes a first P-type body region, a first P+ contact region, a first N+ source region, a first metal electrode, and a first gate structure; the second MOS structure includes a second P-type body region, a second P+ contact region, a second N+ source region, a second metal electrode, and a second gate structure; and the drift region includes a dielectric slot, a first N-type layer, a second N-type layer, and an N-type region. The active region is disposed on the upper surface of the P-type substrate. The first MOS structure and the second MOS structure are symmetrically disposed on two ends of the upper layer of the drift region.

公开(公告)号：US09869868B2

公开(公告)日：2018-01-16

申请号：US15625429

申请日：2017-06-16

Applicant: University of Electronic Science and Technology of China

Inventor： Ziji Liu ,  Xuan He ,  Xing Xiong ,  Zhiqing Liang ,  Yadong Jiang

IPC: G01N21/25 ,  G02B27/10 ,  G02B5/20 ,  G02B3/00

CPC classification number: G02B27/1013 ,  G01J3/00 ,  G01N21/255 ,  G01N21/31 ,  G01N2021/3155 ,  G01N2201/0627 ,  G02B3/0056 ,  G02B5/201

Abstract: A light splitting module for obtaining spectrums of an object to be tested is disclosed, which sequentially includes a light entrance window, a diffuser and a filter array along a light entrance direction, wherein the filter array is an angle modulated filter array which has multiple subareas and includes multiple filters with different center wavelengths respectively corresponding to the subareas. Also, a dual-mode multiplexing optical device is disclosed, which includes the light splitting module, an illumination module and a light field imaging module, can realize the integration of spectral detection and light field imaging, so it can be applied to material spectral detection, digital image detection and digital focusing for obtaining high-resolution imaging results; and simultaneously, the modules of the device are detachable, so that users can use the device as required.

公开(公告)号：US20170373638A1

公开(公告)日：2017-12-28

申请号：US15696533

申请日：2017-09-06

Applicant: UNIVERSITY OF ELECTRONIC SCIENCE AND TECHNOLOGY OF CHINA

Inventor： Peng YE ,  Feng TAN ,  Xingqi LIU ,  Duyu QIU ,  Lianping GUO ,  Kuojun YANG ,  Qinchuan ZHANG ,  Huiqing PAN

IPC: H03B5/04 ,  H03B5/32

CPC classification number: H03B5/04 ,  H03B5/32 ,  H03L1/022 ,  H03L1/028

Abstract: The present invention provides a temperature-compensated crystal oscillator based on digital circuit, a closed-loop compensation architecture is employed to realize the high precision compensation of the crystal oscillator. The output frequency f(T) of the TCXO to be compensated is directly connected with the compensation voltage Vc(T) in real time, and the compensation voltage is fed back to the voltage control terminal of the VCXO to be compensated to compensate, so that the output frequency after compensation is equal to the target frequency signal, thus avoiding the frequency shift of output signal caused by temperature hysteresis, i.e. the discrepancy between the temperature acquired by a temperature senor and the real temperature of the resonant wafer in the prior art.

公开(公告)号：US09726651B2

公开(公告)日：2017-08-08

申请号：US14593304

申请日：2015-01-09

Applicant: University of Electronic Science and Technology of China

Inventor： Xiaosong Du ,  Luhua Cheng ,  Penglin Wu ,  Huan Yuan ,  Yadong Jiang ,  Ze Wu ,  Yi Li ,  Dong Qiu

IPC: G01N30/08 ,  H01L27/02 ,  G01N30/93 ,  B01L3/00 ,  G01N1/40

CPC classification number: G01N30/93 ,  B01L3/5027 ,  B01L3/502707 ,  B01L2300/069 ,  B01L2300/0816 ,  B01L2300/0864 ,  B01L2300/0883 ,  G01N1/4005 ,  G01N1/405 ,  G01N30/08 ,  G01N2030/085

Abstract: A double-sided diaphragm micro gas-preconcentrator has a micro-gas chamber which is formed by stacking an upper silicon substrate with a lower silicon substrate with a back-on-face configuration. One or more suspended membranes are provided on every silicon substrate. The silicon where the suspended membrane is provided is completely removed for forming a cavity. A thin-film heater is deposited on every suspended membrane. A sorptive film is coated on an inner wall of every suspended membrane. Thus, the upper and lower sides of the preconcentrator in the present invention are suspended membranes, which improve the area of the sorptive film on the diaphragm. As a result, the preconcentrating factor is improved while keeping the small heat capacity, fast heating rate, and low power consumption features of the planar diaphragm preconcentrator.

公开(公告)号：US20170194720A1

公开(公告)日：2017-07-06

申请号：US15466640

申请日：2017-03-22

Applicant: University of Electronic Science and Technology of China

Inventor： Zhaoyun Duan ,  Fei Wang ,  Xin Wang ,  Zhanliang Wang ,  Qing Zhou ,  Xinyi Li ,  Yubin Gong

IPC: H01Q21/29 ,  H01Q9/26 ,  H01Q13/20 ,  H01Q1/36 ,  H01Q9/04 ,  H01Q1/48

CPC classification number: H01Q1/36 ,  H01Q1/243 ,  H01Q1/48 ,  H01Q1/521 ,  H01Q9/40 ,  H01Q15/0086 ,  H01Q21/0006

Abstract: The present invention provides a miniature wideband antenna for 5G, which includes a dielectric substrate, a coplanar waveguide feed structure on a front of the dielectric substrate, a main radiator, a second and third radiators and a first radiator on a back of the dielectric substrate. The antenna is small in size with operation band of 3 GHz-30 GHz which covers the various 5G frequency band and covers the current wireless modes of Wi-MAX, W-LAN, UWB and so on. The antenna guarantees future compatibility for various complicated communication modes and has good perspectives for many applications. Based on the antenna, the double-unit and four-unit MIMO antenna adopts orthogonal polarization and metamaterial unit. Thus, high unit separation is achieved without increase on the size of the antenna unit. The present invention has wide applications in small mobile device such as cell phone and laptop.

公开(公告)号：US09679478B2

公开(公告)日：2017-06-13

申请号：US14694984

申请日：2015-04-23

Applicant: University of Electronic Science and Technology of China

Inventor： Huijuan Wu ,  Yunjiang Rao ,  Ya Qian ,  Hanyu Li

IPC: G08G1/04 ,  H04L12/26 ,  G08G1/02

CPC classification number: G08G1/04 ,  G08G1/02

Abstract: An online traffic volume monitoring system based on a phase-sensitive optical time domain reflectometry and its monitoring method are related to a field of intelligent transportation and an application of distributed fiber sensing. A vehicle moving temporal-spatial response graph is generated by accumulating differentiated Optical Time-Domain Reflectometry tracks at different moments in one unit monitoring period for traffic volume statistics, and then converted into a vehicle moving trajectory image through binarization and image pre-processing. Parameters of the moving vehicles are detected by utilizing a search-match method. A traffic volume, moving speeds, moving directions and locations are obtained respectively from detected trajectory number, and a tilt angle and pixel positions. The monitoring method is helpful to solve traffic congestion problem and informing drivers of real-time traffic volume, and contributes to realize an intelligent city traffic regulation.

公开(公告)号：US20170024015A1

公开(公告)日：2017-01-26

申请号：US15284273

申请日：2016-10-03

Applicant: Huawei Technologies Co., Ltd. ,  University of Electronic Science and Technology of China

Inventor： Xingguang SONG ,  Hong CHENG ,  Yanli JI ,  Yang ZHAO ,  Guo YE

IPC: G06F3/01 ,  G06K9/46 ,  G06T5/00 ,  H04N13/02 ,  G06T7/00 ,  G06F3/03

CPC classification number: G06F3/017 ,  G06F3/011 ,  G06F3/0304 ,  G06K9/00355 ,  G06K9/4604 ,  G06T5/002 ,  G06T7/73 ,  G06T2207/10028 ,  G06T2207/20036 ,  G06T2207/30196 ,  H04N13/204

Abstract: Embodiments of the present invention provide a pointing interaction method, apparatus, and system. The method includes: obtaining a hand image and an arm image; determining spatial coordinates of a fingertip according to the hand image, and determining spatial coordinates of an arm key portion according to the arm image; and performing converged calculation on the spatial coordinates of the fingertip and the spatial coordinates of the arm key portion, to determine two-dimensional coordinates, on a display screen, of an intersection point between fingertip pointing and the display screen. Therefore, the pointing interaction apparatus can implement high-precision pointing only by using the spatial coordinates of the fingertip and the spatial coordinates of the arm key portion, and the pointing has good realtimeness.

Abstract translation: 本发明的实施例提供了一种指向交互方法，装置和系统。 该方法包括：获得手图像和手臂图像; 根据所述手图像确定指尖的空间坐标，以及根据所述手臂图像确定手臂键部分的空间坐标; 对指尖的空间坐标和手臂键部的空间坐标进行收敛计算，以在显示画面上确定指尖指示与显示画面的交点的二维坐标。 因此，指点交互装置只能通过使用指尖的空间坐标和手臂键部的空间坐标来实现高精度指示，并且指示具有良好的逼真性。

公开(公告)号：US20160275788A1

公开(公告)日：2016-09-22

申请号：US14694984

申请日：2015-04-23

Applicant: University of Electronic Science and Technology of China

Inventor： Huijuan Wu ,  Yunjiang Rao ,  Ya Qian ,  Hanyu Li

IPC: G08G1/04

CPC classification number: G08G1/04 ,  G08G1/02

Abstract: An online traffic volume monitoring system based on a phase-sensitive optical time domain reflectometry and its monitoring method are related to a field of intelligent transportation and an application of distributed fiber sensing. A vehicle moving temporal-spatial response graph is generated by accumulating differentiated Optical Time-Domain Reflectometry tracks at different moments in one unit monitoring period for traffic volume statistics, and then converted into a vehicle moving trajectory image through binarization and image pre-processing. Parameters of the moving vehicles are detected by utilizing a search-match method. A traffic volume, moving speeds, moving directions and locations are obtained respectively from detected trajectory number, and a tilt angle and pixel positions. The monitoring method is helpful to solve traffic congestion problem and informing drivers of real-time traffic volume, and contributes to realize an intelligent city traffic regulation.

Abstract translation: 基于相敏光时域反射测量及其监测方法的在线流量监测系统与智能交通领域和分布式光纤传感应用有关。 通过在一个单位监测周期内在不同时刻累积差分光时域反射测量轨迹来产生车辆移动时空响应图，用于交通量统计，然后通过二值化和图像预​​处理转换成车辆移动轨迹图像。 通过利用搜索匹配方法来检测移动车辆的参数。 分别从检测到的轨迹数以及倾斜角度和像素位置获得交通量，移动速度，移动方向和位置。 监测方法有助于解决交通拥堵问题，通知驾驶员实时交通量，有助于实现智能城市交通管制。