Patents Assigned to CHONGQING UNIVERSITY
  • Publication number: 20250033464
    Abstract: The disclosure discloses a transmission system capable of implementing four-wheel drive and an operating model thereof. The transmission system includes an odd shift motor, an even shift motor, a front-wheel drive shaft, a rear-wheel drive shaft, a front-wheel output shaft gear disposed on the front-wheel drive shaft, and a rear-wheel output shaft gear disposed on the rear-wheel drive shaft. The front-wheel output shaft gear and the rear-wheel output shaft gear are connected by a front/rear drive shaft coupling sleeve. In the disclosure, coordinated control of two motors allows the motors to operate with high efficiency to the maximum, which improves the efficiency of the transmission system. A four-wheel drive model and a two-wheel drive model are implemented through the coordinated control of two motors. Moreover, in the disclosure, sensor information is used to synchronously control a rotational speed during gear shift, which can reduce the impact during the gear shift.
    Type: Application
    Filed: May 27, 2020
    Publication date: January 30, 2025
    Applicants: CHONGQING UNIVERSITY, CHONGQING CHANGAN NEW ENERGY AUTOMOBILE TECHNOLOGY CO., LTD., CHONGQING CHANGAN AUTOMOBILE CO., LTD.
    Inventors: Minghui HU, Anjian ZHOU, Dongyang WANG, Ling SU, Chunyun FU, Kaibin CAO, Datong QIN, Chenghao DENG, Dongye SUN, Guoqing JIN, Jianjun HU, Wankai SHI, Changhong DU
  • Publication number: 20250023821
    Abstract: A joint optimization method for path selection and gate scheduling in time-sensitive networking comprises S1, a CNC finding a TSN topology, and abstracting same into a network directed graph; S2, a terminal device sending to a CUC a TSN connection request, and the CUC sending same to the CNC; S3, the CNC selecting K shortest paths as alternative paths; S4, the CNC selecting m preferred paths; S5, the CNC finding an optimal transmission path for a TT stream, and finding a proper transmission path for a non-TT stream; S6, CNC completing traversal; S7, configuring a gate control list for the optimal transmission path of each pair of terminal devices; and S8, the CNC encapsulating a computation result into a gate scheduling table, configuring the gate scheduling table to a TSN switch, and then sending a traffic transmission computation result to the TSN terminal device.
    Type: Application
    Filed: May 7, 2022
    Publication date: January 16, 2025
    Applicant: CHONGQING UNIVERSITY OF POSTS AND TELECOMMUNICATIONS
    Inventors: Min WEI, Xingbin FANG, Mengfei YOU, Chengjie HUO, Ping WANG, Wei XU
  • Publication number: 20250012746
    Abstract: The present disclosure discloses an infrared thermal imaging defect detection method and apparatus for a substation insulator. An infrared module is bidirectionally connected to a core computing module, and an infrared module is unidirectionally connected to a high-rate battery. The core computing module is unidirectionally connected to a touch screen. The infrared module is configured to obtain infrared radiation information through a lens, and calculate and generate a temperature distribution video. The method includes infrared video acquisition, thermal region segmentation, device type determination, key temperature information extraction, defect diagnoses, result display and result saving.
    Type: Application
    Filed: September 30, 2022
    Publication date: January 9, 2025
    Applicant: CHONGQING UNIVERSITY
    Inventors: Ruotong MING, Fan YANG, Tian TAN, Hongrui YI, Zhili LI, Zikang YANG, Hui JIANG
  • Publication number: 20250008493
    Abstract: A successive approximation-based joint scheduling method for a time sensitive network and an industrial wireless network includes: in an offline stage: S1, performing customization processing on a superframe structure in an industrial wireless network, determining a superframe duration and a slot length, and calculating the number of slots; S2, acquiring data packet information sent by a node, wherein the data packet information remains consecutive temporally; S3, constructing a training set and a test set for a slot requirement forecasting model; and S4, training the slot requirement prediction model; and in an online stage: S5, configuring a heterogeneous network, which involves configuring configuration information, which is determined in the off-line stage, for a cooperative scheduling subsystem, an industrial wireless gateway, a wireless routing device and an industrial wireless node; S6, performing slot prediction and assignment, and broadcasting beacons; and S7, performing data transmission according t
    Type: Application
    Filed: April 7, 2023
    Publication date: January 2, 2025
    Applicant: CHONGQING UNIVERSITY OF POSTS AND TELECOMMUNICATIONS
    Inventors: Min WEI, Shujie YANG, Xinyang YU, Tao YU, Seungho HONG
  • Publication number: 20240405698
    Abstract: The present invention provides a method for DC-bus capacitance minimization of hybrid clamped converter (HCC), which includes: obtaining the system parameters of the HCC during operation; determining the reference wave; determining the duty ratio of each switch according to the reference wave; determining the total neutral point current of the system; the fundamental component of the upper and lower DC-bus capacitor voltage of the system; determining the maximum voltage fluctuation of the upper and lower DC-bus capacitors; determining the minimum DC-bus capacitance value that satisfies the requirements of system capacitor voltage fluctuation by traversing the capacitance value. The present invention not only reduces the design complexity and cost of the high-power HCC system, but also improves the power density and reliability of the converter.
    Type: Application
    Filed: May 14, 2024
    Publication date: December 5, 2024
    Applicant: CHONGQING UNIVERSITY
    Inventors: Jianyu PAN, Xiaojie FU, Yihui ZHAO
  • Publication number: 20240404077
    Abstract: The present invention relates to unsupervised tracking technology, specifically an unsupervised tracking model training strategy based on contrastive loss. The method comprises: S1: forming a constrained SSCI module using the relation between objects within a video frame and between adjacent video frames; S2: setting features of different objects in each frame as negative samples, and similar adjacent frame objects as positive sample pairs, constructing contrastive loss; S3: constraining embedded features (E_t) by variable loss based on self-supervised contrastive loss. This invention provides a contrastive loss-based training strategy for unsupervised multi-object tracking, leveraging the prior that objects in a frame must be different to enhance object similarity, and using self-supervised learning to match similar objects in short-interval frames as positive samples to boost cross-frame feature expression.
    Type: Application
    Filed: May 30, 2024
    Publication date: December 5, 2024
    Applicant: CHONGQING UNIVERSITY OF TECHNOLOGY
    Inventors: Xin FENG, Ling LU, Yumei SHAN, Di MING, Fang YUE, Wu YANG, Jianwu LONG
  • Patent number: 12145208
    Abstract: The present disclosure provides a worm gear machine, including a workbench, a cutter holder and a cutter holder adjusting system, where the cutter holder includes a big bracket, a first slide rail is disposed on the big bracket, a slide seat in sliding fit with the first slide rail is disposed on the first slide rail, a second slide rail is disposed on the slide seat, a small bracket in sliding fit with the second slide rail is disposed on the second slide rail; and a cutter holder spindle is disposed between the big bracket and the slide seat, a cutter bar synchronously rotating with the cutter holder spindle is disposed between an end of the cutter holder spindle facing toward the small bracket and the small bracket, and a gearbox for driving the cutter spindle to rotate is disposed in the big bracket.
    Type: Grant
    Filed: September 9, 2021
    Date of Patent: November 19, 2024
    Assignee: CHONGQING UNIVERSITY
    Inventors: Shilong Wang, Chi Ma, Sibao Wang, Dechao Heng, Lingwan Zeng, Yong Yang, Canhui Yang
  • Patent number: 12139422
    Abstract: A stormwater runoff treatment substrate includes a lower pyrite substrate layer and an upper biochar substrate layer. The lower pyrite substrate layer includes pyrite, oyster shell powder, and sandy materials in a volume ratio of 10:5:85. The upper biochar substrate layer includes biochar or activated carbon, organic nutrient soil, and sandy materials in a volume ratio of 20:3:77.
    Type: Grant
    Filed: December 10, 2023
    Date of Patent: November 12, 2024
    Assignee: CHONGQING UNIVERSITY
    Inventors: Hongxiang Chai, Zheng Kong, Zhiyu Shao, Jingchen Ma
  • Patent number: 12143199
    Abstract: The present invention relates to a multi-carrier resource allocation method based on a wireless-powered backscatter communication network. The method comprises following steps: S1.
    Type: Grant
    Filed: March 17, 2020
    Date of Patent: November 12, 2024
    Assignee: CHONGQING UNIVERSITY OF POSTS AND TELECOMMUNICATIONS
    Inventors: Yongjun Xu, Qianbin Chen, Guoquan Li, Qilie Liu
  • Patent number: 12131866
    Abstract: A method for preparing a supercapacitor with good cycling stability uses NiO@CoMoO4/NF, an activated carbon plate, a KOH solution (6 mol/L), and polypropylene as raw materials, and is implemented through preparation of an NiO@CoMoO4/NF electrode and assembly of the supercapacitor, wherein the NiO@CoMoO4/NF is the anode of the supercapacitor, the activated carbon plate is the cathode of the supercapacitor, the KOH solution is the electrolyte, and the polypropylene is an isolation plate. The NiO@CoMoO4/NF electrode in the supercapacitor of the present disclosure treated with the ductile material can better adapt to volume changes during the charging and discharging process. After 10,000 cycles of charging and discharging, the capacity of the present disclosure has not faded and still maintains 100% of the maximum capacity, with a high specific capacitance of 79.4 F/g, an energy density of 35.7 Wh/kg, and a functional density of 899.5 W/kg.
    Type: Grant
    Filed: December 7, 2023
    Date of Patent: October 29, 2024
    Assignee: CHONGQING UNIVERSITY OF ARTS AND SCIENCES
    Inventors: Liangliang Tian, Hanwen Ou, Wenyao Yang, Yi Wang
  • Patent number: 12113306
    Abstract: The present disclosure relates to a dual-band antenna array with fan beam and pencil beam. The antenna comprises a substrate and an antenna array arranged on the surface of the substrate, a first antenna element and a second antenna element are cascaded in an x-axis direction by a filter phase-shift line so as to form a subarray. A pair of T-shaped monopoles are symmetrically placed along the x axis at a certain distance above and below each of the first and second antenna elements, respectively, and a rectangular slot is embedded in the upper edge of the second antenna element to achieve good impedance matching. The second antenna element generates a fan beam at one frequency point or frequency band to have the performance of a wide beam, and generates a pencil beam at another frequency point or frequency band to have the performance of a narrow beam.
    Type: Grant
    Filed: December 2, 2022
    Date of Patent: October 8, 2024
    Assignee: CHONGQING UNIVERSITY
    Inventors: Mei Li, Lin Pu, Ming-Chun Tang, Lei Zhu
  • Patent number: 12104225
    Abstract: Provided are a method and molten salt system for recovering rare earth elements from NdFeB waste and use of ferric oxide as a raw material of a manganese-zinc ferrite. The molten salt system comprising the following components in percentage by weight: 40% of K3AlF6 or Na3AlF6, 40% of KBe2F5, and 20% of KAlF4. By adopting the three-component molten salt system of the present invention, recovery rates of rare earth elements extracted from NdFeB waste all can reach 98% or above. By adopting the three-component molten salt system, extraction temperature is 100-400° C. lower than that of all current similar halogenation methods, and extraction time is fold shorted to 1-3 h. The reduction of the extraction temperature and the shortening of the melting time greatly reduce the energy consumption of extracting rare earth elements from NdFeB waste, and the economic benefits are remarkable.
    Type: Grant
    Filed: May 11, 2023
    Date of Patent: October 1, 2024
    Assignees: CHONGQING SHANGJAI ELECTRONIC, CHONGQING UNIVERSITY
    Inventors: Liang Fu, Shuchun Li, Fusheng Pan, Hualin Xie, Xinren Liao, Juncai Ma, Ping Li, Zhan Xu
  • Patent number: 12066809
    Abstract: A method for identifying a critical error of a worm gear machine, step 1: obtaining an actual forward kinematic model T27a and an ideal forward kinematic model T27i from a coordinate system of a worm gear hob to a coordinate system of a worm gear, thereby establishing a geometric error-pose error model of the worm gear machine; step 2: regarding the geometric error-pose error model of the worm gear machine as a multi-input multi-output (MIMO) nonlinear system, and solving, by taking the geometric error of each motion axis of the worm gear machine as an input feature X, and a pose error between the worm gear hob and the worm gear as an output variable Y, an importance coefficient of each input feature with a random forest algorithm; and step 3: determining a critical error affecting a machining accuracy of the worm gear machine.
    Type: Grant
    Filed: September 9, 2021
    Date of Patent: August 20, 2024
    Assignee: CHONGQING UNIVERSITY
    Inventors: Shilong Wang, Chi Ma, Sibao Wang, Dechao Heng, Lingwan Zeng, Yong Yang, Canhui Yang
  • Patent number: 12058846
    Abstract: A titanium sulfide (TiS) nanomaterial and a composite material thereof for wave absorption are disclosed. The TiS nanomaterial is in a form of dispersed micro-particles which are bulks formed by stacking two-dimensional nano-sheets. The TiS nanomaterial is a bulk formed by stacking two-dimensional nano-sheets, thereby having a laminated structure that improves the wave absorption effect. In addition, experimental results demonstrate that the TiS nanomaterial with a dose of 40 wt % has the most excellent wave absorption performance, with a minimum reflection loss up to ?47.4 dB, an effective absorption bandwidth of 5.9 GHz and an absorption peak frequency of 6.8 GHz, which are superior to those of existing two-dimensional bulk materials. One of reasons for the excellent wave absorption performance of the TiS nanomaterial may be because the laminated micro-morphology of TiS results in the electromagnetic wave refraction loss.
    Type: Grant
    Filed: February 23, 2022
    Date of Patent: August 6, 2024
    Assignee: CHONGQING UNIVERSITY
    Inventors: Yuxin Zhang, Kailin Li, Ping′an Yang, Xiaoying Liu, Shihai Ren, Shuang Yi, Jinsong Rao, Nan Li, Lichao Dong, Dalong Cong, Jingying Bai, Wenxiang Shu
  • Publication number: 20240243829
    Abstract: The present invention relates to a cross-network time synchronization method for industrial wireless network and TSN fusion, which belongs to the field of Industrial Internet, comprising the following steps: S1: conducting clock synchronization by a TSN module of a border gateway with a TSN switch of a TSN 2 in a slave clock state; S2: inside the border gateway, using the TSN module as a master clock of an industrial wireless module, and conducting clock synchronization by the industrial wireless module with the TSN module through a serial port; S3: conducting clock synchronization by a routing device in the industrial wireless network with the industrial wireless module of the border gateway through a beacon frame synchronization mode in the slave clock state, and conducting clock synchronization by the routing device as the master clock of a node device for the node device; S4: conducting clock synchronization by a terminal side conversion node in the slave clock state with the node device in the industrial
    Type: Application
    Filed: May 7, 2022
    Publication date: July 18, 2024
    Applicant: CHONGQING UNIVERSITY OF POSTS AND TELECOMMUNICATIONS
    Inventors: Min Wei, Xiaoyun Li, Shuang Niu, Qingyun Fu, Yiming Xing, Ping Wang
  • Publication number: 20240211656
    Abstract: The present disclosure relates to a method and system for fatigue analysis on an offshore deepwater drilling conductor or surface casing. The method includes: obtaining a dynamic soil reaction curve of soil where a conductor or a surface casing is mounted, with consideration of a cyclic decline effect; obtaining a stress response time-history of a hot spot position of the conductor or the surface casing under a dynamic load in each direction, thereby forming a first stress response time-history; obtaining a stress response time-history of the hot spot position of the conductor or the surface casing coupled with a soil reaction under the dynamic load in each direction in combination with the dynamic soil reaction curve and the first stress response time-history, thereby forming a second stress response time-history; and performing fatigue life prediction on the surface casing or the conductor by using the second stress response time-history.
    Type: Application
    Filed: December 26, 2023
    Publication date: June 27, 2024
    Applicant: CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Kanhua SU, Meng LI, Jiangen XU, Hao LI, Chengwei QI, Jilin LIU, Lifu WAN, Li SHI
  • Publication number: 20240158994
    Abstract: An adjustment method of moisture content and dense state for a hydrogel improved subgrade based on weather-resistance during an in-service period, including: step 1: carrying out surface cleaning and compaction of ground; step 2: preparing hydrogel improved subgrade raw material; step 3: paving the prepared material on the surface to form first-layer improved subgrade; and step 4: paving plain soil subgrade onto the first-layer. The method combines the water absorption and release function of the modified resin and the characteristic of the gel state thereof, to pave the improved subgrade in layers, which can absorb water and slightly expand when the water content in the subgrade is increased to a certain threshold value, and a strength and compactness protective layer can also be formed at the connection sections of the ground and the subgrade, and the subgrade and the pavement, to prevent the pot-cover effect from occurring.
    Type: Application
    Filed: October 31, 2022
    Publication date: May 16, 2024
    Applicants: SHANDONG JIAOTONG UNIVERSITY, SHANDONG UNIVERSITY, CHONGQING UNIVERSITY, JINAN JINYUE HIGHWAY ENGINEERING CO., LTD.
    Inventors: Xinzhuang CUI, Jin LI, Qing JIN, Shen ZUO, Dalu XIONG, Peng JIANG, Xiaoning ZHANG, Yefeng DU, Kai YUAN, Chongsheng XIN
  • Patent number: 11973514
    Abstract: A low-complexity selective mapping method using cyclic redundancy check is provided. In performing coding, a transmitter adds a check bit to information bits to be transmitted to obtain modulated data. Demodulation is performed on an M-order modulation symbol received by a receiver to obtain a decoding result of a coding polynomial of the modulation symbol and bit information received by the receiver. A modulo-2 division result of the decoding result of the coding polynomial and a generation polynomial is calculated. In a case that a remainder of the modulo-2 division result is equal to zero, if the modulated data corresponding to the same index value of the receiver and the transmitter are identical, a current iteration is stopped, and a current value is outputted as a phase rotation sequence index recovery value. Finally, the receiver obtains a decoded signal.
    Type: Grant
    Filed: February 1, 2021
    Date of Patent: April 30, 2024
    Assignee: CHONGQING UNIVERSITY OF POSTS AND TELECOMMUNICATIONS
    Inventors: Guojun Li, Junbing Li, Congji Yin, Changrong Ye
  • Publication number: 20240125826
    Abstract: A method for detecting a topological structure of a grounding grid under extremely cold condition, includes the following steps: in a substation in an extremely cold area, determining a measuring area S on a ground surface of a grounding grid according to the positions of branches and nodes of the grounding grid in a selected area, acquiring dynamic current values of the branches and nodes through a current sensor based on TMR tunnel magnetoresistance, and then indirectly acquiring the magnetic induction intensity of the measuring area S through conversion; calculating moduli of first to third derivatives of magnetic induction intensities; and determining specific positions and laying depths of the branches of the grounding grid according to peak distances between main lobe peaks and side peaks between strong peaks of the moduli. According to the method, the calculation amount is greatly reduced, and the detection method has strong anti-interference.
    Type: Application
    Filed: October 10, 2022
    Publication date: April 18, 2024
    Applicant: CHONGQING UNIVERSITY
    Inventors: Ruotong MING, Fan YANG, Zhili LI, Tian TAN, Jihua GE, Hui JIANG, Zikang YANG
  • Publication number: 20240129363
    Abstract: A distributed task offloading and computing resources management method based on energy harvesting is provided, including: establishing a task local computing model and an edge cloud computing model; establishing a device maximum benefit objective function based on the perturbation Lyapunov optimization algorithm and a mobile edge computing server maximum benefit objective function; pre-selecting, by the device based on a pre-screening criteria, a mobile edge computing server for task offloading; calculating an optimal task size strategy for performing task offloading by the device to the selected mobile edge computing server by using a Lagrange multiplier algorithm and a KKT condition; obtaining an optimal quotation strategy of the mobile edge computing server for the device in each of time slots; and obtaining a solution of the optimal task size strategy meeting a Stackelberg equilibrium and a solution of the optimal dynamic quotation strategy meeting the Stackelberg equilibrium as a resource allocation str
    Type: Application
    Filed: November 4, 2021
    Publication date: April 18, 2024
    Applicant: CHONGQING UNIVERSITY OF POSTS AND TELECOMMUNICATIONS
    Inventors: Yun LI, Zhixiu YAO, Shichao XIA, Guangfu WU