公开(公告)号：US11964655B2

公开(公告)日：2024-04-23

申请号：US17766870

申请日：2021-04-12

Applicant: SOUTHEAST UNIVERSITY

Inventor： Xu Li ,  Weiming Hu ,  Jinchao Hu ,  Xuefen Zhu

IPC: B60W30/095 ,  G06N3/045 ,  G06N3/0464

CPC classification number: B60W30/0956 ,  G06N3/045 ,  G06N3/0464 ,  B60W2300/125 ,  B60W2420/408 ,  B60W2554/4041 ,  B60W2554/80

Abstract: The present invention discloses a backward anti-collision driving decision-making method for a heavy commercial vehicle. Firstly, a traffic environment model is established, and movement state information of a heavy commercial vehicle and a vehicle behind the heavy commercial vehicle is collected. Secondly, a backward collision risk assessment model based on backward distance collision time is established, and a backward collision risk is accurately quantified. Finally, a backward anti-collision driving decision-making problem is described as a Markov decision-making process under a certain reward function, a backward anti-collision driving decision-making model based on deep reinforcement learning is established, and an effective, reliable and adaptive backward anti-collision driving decision-making policy is obtained. The method provided by the present invention can overcome the defect of lack for research on the backward anti-collision driving decision-making policy for the heavy commercial vehicle in the existing method, can quantitatively output proper steering wheel angle and throttle opening control quantities, can provide effective and reliable backward anti-collision driving suggestions for a driver, and can reduce backward collision accidents.

公开(公告)号：US11954681B2

公开(公告)日：2024-04-09

申请号：US17617577

申请日：2020-06-16

Applicant: SOUTHEAST UNIVERSITY

Inventor： Xintong Ling ,  Yuwei Le ,  Bowen Zhang ,  Jiaheng Wang ,  Xiqi Gao

IPC: G06Q20/00 ,  G06Q20/38 ,  G06Q20/40 ,  H04L9/00 ,  H04W12/08 ,  H04W12/122

CPC classification number: G06Q20/401 ,  G06Q20/3825 ,  H04L9/50 ,  H04W12/08 ,  H04W12/122 ,  G06Q2220/00

Abstract: A blockchain-enhanced open Internet of Things (IoT) access architecture includes an access point, a number of IoT devices, a hash access mechanism, a blockchain mining network, and a blockchain enabling mechanism that manages network access of the IoT device. The blockchain-enhanced open IoT access architecture provided in the present invention provides a secure, reliable, fair, and short-packet access service for a plurality of devices in an IoT network by using features of a blockchain such as distributed storage, tamper-proofing, and traceability, thereby promoting the trust and cooperation between the devices and ensuring the security and efficiency of the network in the large-scale untrustworthy IoT network. The blockchain-enhanced open IoT access architecture in the present invention can provide secure and reliable IoT access with low latency and a high value in practice.

公开(公告)号：US20240101428A1

公开(公告)日：2024-03-28

申请号：US18013285

申请日：2022-04-27

Applicant: SOUTHEAST UNIVERSITY

Inventor： Huiyan ZHANG ,  Dongyang JIANG ,  Qingyu LIU ,  Ru HONG ,  Bo PENG ,  Rui XIAO

IPC: C01B32/162 ,  B01J23/86 ,  B01J23/94 ,  C01B3/26

CPC classification number: C01B32/162 ,  B01J23/862 ,  B01J23/94 ,  C01B3/26 ,  B82Y40/00 ,  C01B2203/0277 ,  C01B2203/06 ,  C01B2203/1023 ,  C01B2203/1047 ,  C01B2203/1235

Abstract: A meshed catalyst based high-yield preparation and regeneration method for carbon nanotubes and hydrogen includes the following steps: step one, adding waste plastic into a low-temperature pyrolysis section, conducting slow heating, and continuously introducing nitrogen; step two, using a multilayer stainless steel mesh obtained through laminated pressing and vacuum sintering as a catalyst, introducing the volatiles into a high-temperature catalytic section, conducting a catalytic reaction under the action of a meshed stainless steel catalyst obtained through acid etching and calcination pretreatment, generating the carbon nanotubes on a surface of the catalyst, and meanwhile generating high-purity hydrogen; and step three, after temperature drop, conducting ultrasonic treatment on a stainless steel mesh after the reaction, achieving physical stripping of the carbon nanotubes from the stainless steel mesh, then placing the stainless steel mesh subjected to secondary calcination in a system for recycling, and regenerating the carbon nanotubes and the hydrogen.

公开(公告)号：US11943080B2

公开(公告)日：2024-03-26

申请号：US17611179

申请日：2021-03-17

Applicant: Southeast University

Inventor： Haiming Wang ,  Bensheng Yang ,  Peize Zhang ,  Chen Yu ,  Wei Hong

IPC: H04L12/50 ,  H04L25/02

CPC classification number: H04L25/0204

Abstract: Disclosed is a method for estimating dense multipath parameters by means of multipolarized broadband extended array responses, which includes: first transmitting multiple different transmitted signal sequences via a multipolarized antenna array, and processing received data in multiple snapshots according to the known transmitted signals, to obtain channel responses of multipolarized antenna components at all frequency points in a frequency band; extending the obtained channel response matrixes of multiple frequency points in multiple snapshots into a large two-dimensional channel response matrix; then, acquiring a delay parameter regarding multipath propagation by using a reference array element, and estimating two-dimensional departure and arrival angles by using a channel matrix subjected to frequency domain smoothing and dimensionality reduction; and afterwards, pairing the estimated departure and arrival angles, and estimating parameters such as the cross-polarization ratios, the initial phases, and the amplitudes of the sub-paths by using the estimated parameters.

公开(公告)号：US20240083794A1

公开(公告)日：2024-03-14

申请号：US18264047

申请日：2022-07-01

Applicant: SOUTHEAST UNIVERSITY

Inventor： Dongxu WU ,  Xiaosong ZHANG ,  Yuanzhi GAO ,  Zhaofeng DAI

IPC: C02F9/00 ,  B01D1/00 ,  B01D3/00 ,  C02F1/00 ,  F24S20/40 ,  F24S60/30 ,  F24S80/30 ,  F25B27/00 ,  F25B30/02

CPC classification number: C02F9/00 ,  B01D1/0035 ,  B01D3/007 ,  C02F1/006 ,  F24S20/40 ,  F24S60/30 ,  F24S80/30 ,  F25B27/005 ,  F25B30/02 ,  C02F1/14

Abstract: The present disclosure discloses a saline wastewater treatment system using solar-assisted heat pump. A method of solar thermal collector coupled with a heat pump can treat saline wastewater at low carbon and high efficiency, and industrial salt and fresh water can be obtained by concentration. The system includes a wastewater pretreatment system, a wastewater heating system, and a wastewater evaporation and concentration treatment system. The wastewater pretreatment system is connected to the wastewater heating system; and the wastewater heating system is connected to the wastewater evaporation and concentration treatment system.

公开(公告)号：US11927446B2

公开(公告)日：2024-03-12

申请号：US17040543

申请日：2019-03-12

Applicant: SOUTHEAST UNIVERSITY

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

IPC: G01C21/00 ,  B63B79/10 ,  B63G8/00 ,  G01C21/16 ,  G01C21/20 ,  G01S19/49

CPC classification number: G01C21/165 ,  B63B79/10 ,  B63G8/001 ,  G01C21/20 ,  G01S19/49 ,  B63B2213/00 ,  B63G2008/004

Abstract: A navigation and positioning system for an underwater glider includes a micro-electro-mechanical system inertial measurement unit, a global positioning system receiving module, a triaxial magnetometer, a Doppler velocimeter, and an integrated navigation hardware processing system. If a navigation and positioning error is too large, the underwater glider stops working in real time and switches from the underwater working state to the up floating error correction state; and when velocity and location errors of a GPS/INS integrated navigation system are smaller than specified thresholds, the underwater glider switches from the up floating error correction state to the underwater working state and continues to work. An H∞ Kalman filter algorithm based on an adaptive multiple fading factor is established to ensure robustness and adaptability of navigation and positioning of a glider.

公开(公告)号：US11906646B2

公开(公告)日：2024-02-20

申请号：US17621688

申请日：2021-03-17

Applicant: SOUTHEAST UNIVERSITY

Inventor： Haiming Wang ,  Bensheng Yang ,  Wenhao Wu

IPC: G01S5/02

CPC classification number: G01S5/0273

Abstract: The invention discloses a method for estimating the air propagation delay of a direct wave, wherein an azimuth, an elevation angle and a total delay of a multipath wave reaching a receiving end are obtained through a receiving device; a departure angle of a reflected wave is obtained using a geometric relationship of wave reflection; a hypothetical point on a direct wave ray is selected as a transmitting end, and hereby the air propagation delay of the direct wave and the position of a reflection point of the reflected wave are calculated; the propagation delay and distance of the reflected wave are calculated according to the total delay of the direct wave and the reflected wave and the position of the hypothetical point. The invention can obtain the air propagation delay of the direct wave, thereby obtaining a propagation distance of the direct wave and fulfilling the requirements of ranging and positioning.

公开(公告)号：US11889663B1

公开(公告)日：2024-01-30

申请号：US18368026

申请日：2023-09-14

Applicant: SOUTHEAST UNIVERSITY

Inventor： Xu Liu ,  Ao Li ,  Jiangfeng Yao ,  Zilong Deng ,  Chengbin Zhang

IPC: H05K7/20

CPC classification number: H05K7/20818 ,  H05K7/203 ,  H05K7/20236 ,  H05K7/20272 ,  H05K7/20327 ,  H05K7/20781

Abstract: An immersion dual-cycle multi-mode liquid cooling regulation system and method for a data center comprises data center cabinets, a microchannel condensation heat exchanger, a plate heat exchanger, waste heat recovery devices, a cooling water storage tank, a fluorinated liquid storage tank, a liquid pump, a fluorinated liquid, pipelines, and pipeline valves. The system switches between single-phase and two-phase circulation loops according to the working power consumption of a server and the thermophysical property of a cooling working medium, and realizes flexible adjustment and control according to the cooling demand of the cabinet, the load magnitude and the working environment, thus avoiding the waste of resources caused by different loads in the data center; and cooling water flows through the waste heat recovery devices to recover heat, to reduce the electricity consumption of the system and greatly improve the utilization efficiency of cooling capacity.

公开(公告)号：US11887472B2

公开(公告)日：2024-01-30

申请号：US17925748

申请日：2022-07-04

Applicant: SOUTHEAST UNIVERSITY

Inventor： Yanyong Guo ,  Hongliang Ding ,  Yao Wu ,  Pan Liu ,  Pei Liu

IPC: G08G1/01

CPC classification number: G08G1/0129 ,  G08G1/0137

Abstract: The present invention discloses a method and system for evaluating road safety based on multi-dimensional influencing factors, and relates to the field of road safety technologies. Based on historical traffic data and corresponding safety influencing factors, safety evaluation models in different dimensions are respectively constructed, and road safety risk exposure is classified flexibly. The safety evaluation models in macro and micro dimensions are linked by using a constraint function, and influence mechanisms of the safety influencing factors are determined respectively. Specifically, a safety evaluation model is constructed and obtained for each sub-region in a limited region range. The safety evaluation model is applied to obtain influencing factors of safety of each traffic road in the sub-region, and safety evaluation is performed on the sub-region. Through the technical solutions of the present invention, an accurate, comprehensive, objective method for evaluating road safety that reflects authentic influence data is provided, which has a wider application scope.

公开(公告)号：US20240009640A1

公开(公告)日：2024-01-11

申请号：US18230732

申请日：2023-08-07

Applicant: SOUTHEAST UNIVERSITY

Inventor： Chunxiang QIAN ,  Tianwen ZHENG

IPC: B01J2/12 ,  B02C23/10

CPC classification number: B01J2/12 ,  B02C23/10

Abstract: A microbial repairing agent production line includes a feeder, where the feeder is connected to a storage bin, the bottom of the storage bin is connected to a metering tank, the metering tank is in communication with a granulator through a spiral or pneumatic conveying apparatus, a screening device is arranged below the granulator, and a discharge port of the screening device is connected to one end of a conveyor belt; a production process for includes: conveying a raw material to a storage bin through a feeder; then adding the raw materials to a metering tank in sequence through a spiral or pneumatic conveying apparatus, and metering and weighing the raw materials; conveying metered raw materials into a granulator; discharging the microbial repairing agent; and screening the microbial repairing agent, and collecting and maintaining the microbial repairing agent.