Patents Assigned to CHONGQING UNIVERSITY
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Patent number: 12218684Abstract: The present invention relates to a layered semi-parallel LDPC decoder system having a single permutation network, and belongs to the field of decoder hardware design. The system comprises a layered decoding architecture of the single permutation network, a layered semi-parallel decoding architecture of the single permutation network, a pipeline design for layered semi-parallel decoding and a hardware framework of a layered semi-parallel LDPC decoder. The present invention removes a permutation network module between a check node and a variable node by modifying the cyclic shift value of each information block transferred from the variable node to the check node, i.e., the cyclic shift operation of the decoder can be completed through the single permutation network so as to reduce hardware resources of the decoder. A semi-parallel decoding structure is adopted, and meanwhile, a pipeline is added between half layers.Type: GrantFiled: November 15, 2021Date of Patent: February 4, 2025Assignee: Chongqing University Of Posts And TelecommunicationsInventors: Hongsheng Zhang, Taiyun Ding, Ting Liu, Hong Yang, Yi Huang, Weizhong Chen, Qi Wang, Xi Wang
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Publication number: 20250033464Abstract: 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: ApplicationFiled: May 27, 2020Publication date: January 30, 2025Applicants: 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
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Patent number: 12206265Abstract: The present disclosure provides a decentralized active equalization method for a cascaded lithium-ion battery pack. The method includes: connecting each battery cell in the cascaded lithium-ion battery pack to a direct current (DC) bus through an equalizer respectively, where each equalizer includes an independent controller, a sampling circuit, a power supply circuit, a drive circuit, and a main circuit; connecting an input terminal of the main circuit to a corresponding battery cell, and connecting an output terminal of the main circuit to the DC bus. The present disclosure solves the technical problem that an existing cascaded lithium-ion battery pack equalization method cannot achieve equalization when a centralized controller failure or a communication failure occurs, improves the reliability of the equalization method, can make the equalizer work at high efficiency by configuring parameters of C, K, and R, and speeds up the equalization or improves the equalization accuracy.Type: GrantFiled: January 31, 2022Date of Patent: January 21, 2025Assignees: Chongqing University, Star Institute of Intelligent Systems, DB (Chongqing) Intelligent Technology Research Institute Co., Ltd.Inventors: Yongduan Song, Jiawei Chen, Li Chen, Qingchao Song
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Patent number: 12203526Abstract: A negative stiffness generating mechanism and a quasi-zero stiffness vibration isolator are provided. A housing is mounted on a base, and the axial relative positions of the housing and the base can be adjusted; a negative stiffness unit comprises inner-ring magnets, outer-ring magnets and a supporting shaft, the supporting shaft axially slides on the base and passes through the housing, the inner-ring magnets fixedly sleeve the supporting shaft, and the outer-ring magnets sleeve outside the inner-ring magnets and are divided into upper and lower groups of outer-ring magnets; the upper and lower groups of outer-ring magnets can synchronously move through a negative stiffness adjusting device; and the axial relative positions of the middle planes of the outer-ring and inner-ring magnets can be adjusted by adjusting the axial relative positions of the housing and the base. The isolator comprises a negative stiffness generating mechanism and a positive stiffness unit.Type: GrantFiled: March 17, 2022Date of Patent: January 21, 2025Assignee: Chongqing UniversityInventors: Jun Luo, Xu Chen, Huayan Pu, Jinglei Zhao, Yan Jing
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Publication number: 20250023821Abstract: 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: ApplicationFiled: May 7, 2022Publication date: January 16, 2025Applicant: CHONGQING UNIVERSITY OF POSTS AND TELECOMMUNICATIONSInventors: Min WEI, Xingbin FANG, Mengfei YOU, Chengjie HUO, Ping WANG, Wei XU
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Publication number: 20250012746Abstract: 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: ApplicationFiled: September 30, 2022Publication date: January 9, 2025Applicant: CHONGQING UNIVERSITYInventors: Ruotong MING, Fan YANG, Tian TAN, Hongrui YI, Zhili LI, Zikang YANG, Hui JIANG
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Publication number: 20250008493Abstract: 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 tType: ApplicationFiled: April 7, 2023Publication date: January 2, 2025Applicant: CHONGQING UNIVERSITY OF POSTS AND TELECOMMUNICATIONSInventors: Min WEI, Shujie YANG, Xinyang YU, Tao YU, Seungho HONG
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Patent number: 12175704Abstract: Embodiments of the present disclosure provide a quantitative method and system for attention based on a line-of-sight estimation neural network, which improves the stability and training efficiency of the line-of-sight estimation neural network. A few-sample learning method is applied to training of the line-of-sight estimation neural network, which improves generalization performance of the line-of-sight estimation neural network. A nonlinear division method for small intervals of angles of the line of sight is provided, which reduces an estimation error of the line-of-sight estimation neural network. Eye opening and closing detection is added to avoid the line-of-sight estimation error caused by an eye closing state. A method for solving a landing point of the line of sight is provided, which has high environmental adaptability and can be quickly used in actual deployment.Type: GrantFiled: February 25, 2022Date of Patent: December 24, 2024Assignees: Chongqing University, Star Institute of Intelligent Systems, DB (Chongqing) Intelligent Technology Research Institute Co., Ltd., University of Electronic Science and Technology of ChinaInventors: Yongduan Song, Feng Yang, Rui Li, Qin Chen, Shichun Wang, Hongyu Xia, Caishi He, Shihao Pu
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Publication number: 20240405698Abstract: 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: ApplicationFiled: May 14, 2024Publication date: December 5, 2024Applicant: CHONGQING UNIVERSITYInventors: Jianyu PAN, Xiaojie FU, Yihui ZHAO
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Publication number: 20240404077Abstract: 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: ApplicationFiled: May 30, 2024Publication date: December 5, 2024Applicant: CHONGQING UNIVERSITY OF TECHNOLOGYInventors: Xin FENG, Ling LU, Yumei SHAN, Di MING, Fang YUE, Wu YANG, Jianwu LONG
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Patent number: 12145208Abstract: 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: GrantFiled: September 9, 2021Date of Patent: November 19, 2024Assignee: CHONGQING UNIVERSITYInventors: Shilong Wang, Chi Ma, Sibao Wang, Dechao Heng, Lingwan Zeng, Yong Yang, Canhui Yang
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Patent number: 12139422Abstract: 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: GrantFiled: December 10, 2023Date of Patent: November 12, 2024Assignee: CHONGQING UNIVERSITYInventors: Hongxiang Chai, Zheng Kong, Zhiyu Shao, Jingchen Ma
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Multi-carrier resource allocation method based on wireless-powered backscatter communication network
Patent number: 12143199Abstract: 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: GrantFiled: March 17, 2020Date of Patent: November 12, 2024Assignee: CHONGQING UNIVERSITY OF POSTS AND TELECOMMUNICATIONSInventors: Yongjun Xu, Qianbin Chen, Guoquan Li, Qilie Liu -
Patent number: 12135926Abstract: A method for quickly optimizing key mining parameters of an outburst coal seam as provided includes steps of constructing a graphic basic information model of the coal mine, giving coal mine characteristic information, performing mining simulation, constructing a CNN-LSTM predicating model, obtaining changes under different mining conditions, constructing a Lorenz chaotic primer, and the like. The model can be improved with continuous breakthroughs in theory, so that the model has a strong learning ability and can adapt to the constantly changing complex geological environment. The method has very good predictability for the determination of coal seam group parameters, and can efficiently select and output a set of candidate parameters.Type: GrantFiled: June 16, 2021Date of Patent: November 5, 2024Assignees: Chongqing University, North China Institute Of Science And TechnologyInventors: Quanle Zou, Zhiheng Cheng, Liang Chen, Hongbing Wang, Tengfei Ma, Zihan Chen, Zhenli Zhang, Zhimin Wang, Ying Liu
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Publication number: 20240361224Abstract: The present application introduces a membrane fouling warning methodology grounded in machine learning. It utilizes a machine learning-based membrane fouling prediction model to automatically forecast and generate electrochemical information values, which characterize the extent of membrane fouling at various time points, based on influent water quality parameters. It then acquires the electrochemical information values Zt at a moment t and Zt+?t at a moment t+?t. Subsequently, it computes and assesses the respective fouling levels using the electrochemical information values derived from the membrane fouling prediction model. Finally, it issues an early warning signal contingent upon the determined warning level. This methodology facilitates proactive understanding and management of membrane fouling, thereby sustaining the normal operation of the membrane fouling treatment system, mitigating the propensity for membrane assembly fouling, and prolonging the operational lifespan of the membrane assembly.Type: ApplicationFiled: April 27, 2024Publication date: October 31, 2024Applicant: Chongqing UniversityInventors: Le HAN, Ting ZOU, Jian LIU, Lu ZHOU, Haoquan ZHANG, Jingmei YAO
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Patent number: 12131866Abstract: 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: GrantFiled: December 7, 2023Date of Patent: October 29, 2024Assignee: CHONGQING UNIVERSITY OF ARTS AND SCIENCESInventors: Liangliang Tian, Hanwen Ou, Wenyao Yang, Yi Wang
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Patent number: 12127143Abstract: The present invention relates to a consensus-based clock synchronization skew estimation method based on sequential least squares, and belongs to the technical field of wireless sensor networks. The method is to establish a relationship model of clock information and time delay between nodes with respect to a bounded random communication time delay scenario subject to arbitrary distribution, fully consider all clock information received by a node from a neighbor, build a clock parameter estimation model and a cost function based on a least squares principle, iteratively estimate relative clock skew by a sequential least squares method, and update logical clock parameters of nodes by a consensus-based clock synchronization method, so as to achieve global clock consistency of all nodes in a network in a completely distributed way.Type: GrantFiled: June 15, 2021Date of Patent: October 22, 2024Assignee: Chongqing University of Posts and TelecommunicationsInventors: Heng Wang, Pengfei Gong, Ping Wang
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Patent number: 12123820Abstract: The present application introduces a membrane fouling warning methodology grounded in machine learning. It utilizes a machine learning-based membrane fouling prediction model to automatically forecast and generate electrochemical information values, which characterize the extent of membrane fouling at various time points, based on influent water quality parameters. It then acquires the electrochemical information values Zt at a moment t and Z++?t at a moment t+?t. Subsequently, it computes and assesses the respective fouling levels using the electrochemical information values derived from the membrane fouling prediction model. Finally, it issues an early warning signal contingent upon the determined warning level. This methodology facilitates proactive understanding and management of membrane fouling, thereby sustaining the normal operation of the membrane fouling treatment system, mitigating the propensity for membrane assembly fouling, and prolonging the operational lifespan of the membrane assembly.Type: GrantFiled: April 27, 2024Date of Patent: October 22, 2024Assignee: Chongqing UniversityInventors: Le Han, Ting Zou, Jian Liu, Lu Zhou, Haoquan Zhang, Jingmei Yao
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Patent number: 12113306Abstract: 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: GrantFiled: December 2, 2022Date of Patent: October 8, 2024Assignee: CHONGQING UNIVERSITYInventors: Mei Li, Lin Pu, Ming-Chun Tang, Lei Zhu
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Publication number: 20240328128Abstract: Disclosed are an automatic remote water supply system in a low gravity environment, which includes a water supply unit, an environment detection unit and a control unit. The water supply unit includes a water bag, an air inlet pipe, a water pipe and a water pump on the water pipe. The bottom of the water bag has an air inlet and a water outlet. The air inlet pipe is communicated with the water bag through the air inlet. The water pipe is communicated with the water bag through the water outlet. The environment detection unit is configured to detect environmental information in the ecosystem to which the water supply system belongs in the low gravity environment. The control unit is configured to control the starting state of the water pump according to the environmental information, so that water in the water bag flows out through the water pipe.Type: ApplicationFiled: February 26, 2024Publication date: October 3, 2024Applicant: Chongqing UniversityInventors: Gengxin XIE, Xi WANG, Xiaojun YANG, Dan QIU, Pan DONG, Xianzhe ZHENG, Yingbo LIU, Jinghang DING