公开(公告)号：US20220278466A1

公开(公告)日：2022-09-01

申请号：US17605005

申请日：2021-01-12

Applicant: SOUTHEAST UNIVERSITY ,  PURPLE MOUNTAIN LABORATORIES

Inventor： Zhihao JIANG ,  Ke ZHANG ,  Wei HONG

IPC: H01Q21/24 ,  H01Q9/04 ,  H01Q19/00 ,  H01Q21/00 ,  H01Q21/06 ,  H01Q21/30 ,  H01Q1/36

Abstract: A compact dual-band triple-polarized antenna based on shielded mushroom structures includes a vertically-polarized radiator and a horizontally-polarized radiator. Two parts are fixedly connected in a disc-shaped structure. The vertically-polarized radiator and the horizontally-polarized radiator are both multilayer structures. Each multilayer structure includes a plurality of concentric circles, and the plurality of concentric circles include a plurality of dielectric substrates. The vertically-polarized radiator and horizontally-polarized radiator each include a plurality of shielded mushroom cell structures. Each shielded mushroom cell structure includes at least three metal layers and a metallic shorting pin, and the metallic shorting pin connects at least two of the at least three metal layers. By controlling dispersion properties of the each shielded mushroom cell structure, a multi-frequency pattern diversity device possessing both vertical polarization and dual horizontal polarization radiation characteristics in two pre-defined frequencies is designed.

公开(公告)号：US20220218928A1

公开(公告)日：2022-07-14

申请号：US17708037

申请日：2022-03-30

Applicant: ZHONGDA HOSPITAL SOUTHEAST UNIVERSITY ,  SHENZHEN MINDRAY BIO-MEDICAL ELECTRONICS CO., LTD.

Inventor： Ling LIU ,  Jinglei LIU ,  Jianfeng XIE ,  Xiaoyong ZHOU ,  Jingyuan XU ,  Jun CHEN ,  Yi YANG ,  Xinru ZOU ,  Haibo QIU

IPC: A61M16/00 ,  G16H20/40

Abstract: This disclosure provides a method for evaluating volume responsiveness and a medical device. The medical device includes a respiratory assistance device for providing respiratory support for a patient, and a first sensor for collecting physiological parameters of the patient and a processor. When volume responsiveness evaluation is needed, the processor controls ventilation parameters to switch to a second ventilation parameter that may increase the variation of the intrathoracic pressure of the patient, and then uses a parameter variation capable of reflecting the heartbeat of the patient to evaluate whether the patient is volume responsive.

公开(公告)号：US20220211920A1

公开(公告)日：2022-07-07

申请号：US17602202

申请日：2020-09-23

Applicant: SOUTHEAST UNIVERSITY

Inventor： Ning GU ,  Xin LIU

IPC: A61L31/04

Abstract: The present invention relates to a method for molding a self-supporting silk fibroin catheter stent, which comprises preparing an excellent catheter stent by a mold casting and freeze-drying molding process using silk fibroin as a raw material. The raw material is silk fibroin extracted from natural mulberry silk; and the mold is a hollow tubular mold, having an outer shell that is a transparent polyethylene straw with a diameter of 6 mm and an inner core that is a fiber rod FRP with a diameter of 3 mm, with the two ends being closed. The mold casting and freeze-drying molding process comprises the steps of casting; pre-freezing; removing the mold and placing the mold onto a pre-frozen freeze-drying plate; and freeze-drying. The freeze-drying procedure comprises: (1) a pre-freezing stage; (2) a freezing—vacuum transition stage; (3) a gradient temperature-rising and freeze-drying stage; and (4) a secondary freeze-drying stage. The freeze-drying procedure is strictly regulated in accordance with the specifications of freeze-dried stents. The prepared stent has a good shape, and good tolerance without adding any additional components. The stent presents a three-dimensional porous space structure, the process is simple, and the stent meets the requirements for tissue-engineered vascular stent in clinic.

公开(公告)号：US11372129B2

公开(公告)日：2022-06-28

申请号：US17418848

申请日：2019-05-30

Applicant: SOUTHEAST UNIVERSITY

Inventor： Tijing Cai ,  Mingbiao Yu

IPC: G01V7/06 ,  G01P15/18

Abstract: A post-compensation method for motion errors of a rotating accelerometer gravity gradiometer includes the steps of: during moving-base gravity gradient exploration, recording angular and linear motions of a gravity gradiometer; after the exploration, removing angular and linear motion errors from output data of the gravity gradiometer based on an analytical model of the rotating accelerometer gravity gradiometer; while ensuring that the precision of the gravity gradiometer is unchanged, the post-compensation method for the motion errors may be applied to greatly reduce the requirements of the gravity gradiometer for the precision of an online error compensation system, thereby simplifying the circuit design and mechanical design of the rotary accelerometer gravity gradiometer, and making the rotating accelerometer gravity gradiometer simpler and cheaper.

公开(公告)号：US11367785B2

公开(公告)日：2022-06-21

申请号：US17606216

申请日：2020-03-31

Applicant: SOUTHEAST UNIVERSITY

Inventor： Jing Zhu ,  Ankang Li ,  Long Zhang ,  Weifeng Sun ,  Shengli Lu ,  Longxing Shi

IPC: H01L29/73 ,  H01L29/739 ,  H01L29/10

Abstract: A lateral insulated gate bipolar transistor (IGBT) with a low turn-on overshoot current is provided to reduce a peak value of a current flowing through a device during turn-on of a second gate pulse while preventing a current capability and a withstand voltage capability from being degraded. The lateral IGBT includes: a buried oxygen arranged on a P-type substrate, an N-type drift region arranged on the buried oxygen, on which a P-type body region and an N-type buffer region are arranged, a P-type collector region arranged in the N-type buffer region, a field oxide layer arranged above the N-type drift region, a P-type well region arranged in the P-type body region, and a P-type emitter region and an emitter region arranged in the P-type well region, where inner boundaries of the foregoing 4 regions are synchronously recessed to form a pinch-off region. A gate oxide layer is arranged on a surface of the P-type body region, and a polysilicon gate is arranged on the gate oxide layer. The polysilicon gate includes a first gate located above the surface of the P-type body region and a second gate located above the pinch-off region and the N-type drift region. The first gate is connected to a first gate resistor, and the second gate is connected to a second gate resistor.

公开(公告)号：US20220179061A1

公开(公告)日：2022-06-09

申请号：US17436614

申请日：2019-05-29

Applicant: Southeast University

Inventor： Xu LI ,  Huaikun GAO ,  Qimin XU

IPC: G01S13/87 ,  G01S13/91

Abstract: In Intelligent Vehicle Infrastructure Cooperative Systems (IVICS), a high-precision vehicle positioning method utilizing Ultra-Wide Band (UWB) is proposed. Owing to remarkable wide band of radio signal, this UWB-based positioning method shows excellent anti-interference capability and multi-path immunity, which are essential for achieving high precision in practical traffic scenario. In this approach, several UWB nodes are deliberately deployed at the crossing with the help of roadside infrastructure in IVICS. Meanwhile, an algorithm aiming at Non Line of Sight (NLOS) error compensation is developed to improve the positioning performance. In a word, this method has been demonstrated the potential to achieve accurate, reliable, continuous and integrated localization.

公开(公告)号：US20220111536A1

公开(公告)日：2022-04-14

申请号：US17280305

申请日：2020-04-21

Applicant: SOUTHEAST UNIVERSITY

Inventor： Aiguo SONG ,  Chaolong QIN ,  Jiahang ZHU ,  Linhu WEI ,  Yu ZHAO ,  Huijun LI ,  Baoguo XU

IPC: B25J13/02 ,  G06F3/0338 ,  G06F3/01

Abstract: The present invention discloses a care robot controller, which includes: a controller body that includes slide rails, finger slot sliders and a joystick, wherein the finger slot sliders are movably arranged on the slide rails and configured to receive pressing, and the joystick is configured to control the care robot; a gesture parsing unit configured to parse three-dimensional gestures of the controller body, and control the care robot to perform corresponding actions when the three-dimensional gestures of the controller body are in line with preset gestures; and a tactile sensing unit configured to sense the pressing received by the finger slot sliders and initiate a user mode corresponding to the pressing information, so that the controller body provides corresponding vibration feedback. Thus the user can control the controller efficiently and conveniently, the control accuracy is improved, and effective man-machine interaction is realized.

公开(公告)号：US11293759B2

公开(公告)日：2022-04-05

申请号：US16980860

申请日：2019-03-12

Applicant: SOUTHEAST UNIVERSITY

Inventor： Xiyuan Chen ,  Ping Yang ,  Junwei Wang ,  Lin Fang

IPC: G01C21/18 ,  G01C25/00 ,  G01C21/16

Abstract: A method for decoupling an angular velocity in a transfer alignment process under a dynamic deformation includes: (1) generating, by a trajectory generator, information about an attitude, a velocity, and a position of a main inertial navigation system and an output of an inertial device, and simulating a bending deformation angle {right arrow over (θ)} between the main inertial navigation system and a slave inertial navigation system and a bending deformation angular velocity {right arrow over (ω)}θ by using second-order Markov; (2) decomposing the dynamic deformation into a vibration deformation and a bending deformation, and establishing an angular velocity model under the dynamic deformation of a wing; (3) deducing an error angle Δ{right arrow over (ϕ)} between the main inertial navigation system and the slave inertial navigation system; and (4) deducing an expression Δ{right arrow over (ω)} of a coupling error angular velocity, and applying that to an angular velocity matching process of transfer alignment to improve the precision of the transfer alignment.

公开(公告)号：US11290009B2

公开(公告)日：2022-03-29

申请号：US16966474

申请日：2020-04-30

Applicant: SOUTHEAST UNIVERSITY

Inventor： Chao Chen ,  Jun Yang ,  Xinning Liu

IPC: H02M3/07 ,  H02M1/00

Abstract: A high energy efficiency switched-capacitor power converter includes the transmission gates T1-T7, the capacitors C1-C4, the load capacitor CL, and resistors, PMOS tubes and NMOS tubes. The power converter converts a stable input voltage of 3V into an output voltage of 1V by means of charge transfer. In the state of timing sequence 1, the on-chip capacitor C1, the capacitor C2 and the load capacitor CL are charged in series. In the state of timing sequence 2, the capacitor C1 and the capacitor C2 are connected in parallel to the capacitor CL to supplement the charge loss due to load for the capacitor CL. When the establishment is completed, the voltages across the capacitor C1, the capacitor C2, and the capacitor CL are basically the same. At this time, the voltage drop across the switch tube approximates 0 V during the charge transfer process.

公开(公告)号：US20220069718A1

公开(公告)日：2022-03-03

申请号：US17420866

申请日：2020-06-19

Applicant: SOUTHEAST UNIVERSITY ,  CSMC TECHNOLOGIES FAB2 CO., LTD.

Inventor： Shen XU ,  Minggang CHEN ,  Wanqing YANG ,  Dejin WANG ,  Rui JIANG ,  Weifeng SUN ,  Longxing SHI

IPC: H02M3/335 ,  H02M1/38

Abstract: Disclosed are a system and method for controlling an active clamp flyback (ACF) converter. The system includes: a drive module configured to control turning-on or turning-off of a main switching transistor SL and a clamp switching transistor SH; a main switching transistor voltage sampling circuit configured to sample a voltage drop between an input terminal and an output terminal of the main switching transistor SL; a first comparator connected to the main switching transistor voltage sampling circuit and configured to determine whether a sampled first sampling voltage is a positive voltage or a negative voltage; and a dead time calculation module configured to adjust, according to an output of the first comparator and a main switching transistor control signal DUTYL of a current cycle, a clamp switching transistor control signal DUTYH of next cycle outputted by the drive module.