METHOD AND SYSTEM FOR MENTAL STATE PERCEPTION, READABLE STORAGE MEDIUM

    公开(公告)号:US20250134430A1

    公开(公告)日:2025-05-01

    申请号:US19008644

    申请日:2025-01-03

    Abstract: Disclosed are a method and a system for mental state perception and a computer-readable storage medium. The method includes: acquiring image sequences with timestamps and millimeter-wave radar raw data with timestamps; preprocessing the image sequences and the millimeter-wave radar raw data; analyzing the head region image sequences to obtain head vibration signal features; calculating face region image sequences obtained from preprocessing by using a remote photovolumetric pulse wave recording method to obtain a first heart rate; analyzing the original millimeter-wave radar data sequence to obtain a second heart rate and a breathing rate; fusing the first heart rate, the second heart rate and the breathing rate to obtain a fused heart rate and breathing rate; performing feature extraction on facial change information by a Transformer-like network; establishing a non-contact multi-modal mental perception model for prediction to obtain a predicted result of the mental state.

    Signal amplitude feature-based method for fast reconstructing a magnetic particle imaging and device

    公开(公告)号:US12136145B2

    公开(公告)日:2024-11-05

    申请号:US17811738

    申请日:2022-07-11

    Abstract: The present disclosure includes: transforming a time-domain voltage signal collected by an MPI system device to a frequency domain; calculating a square root of a square sum of a real part and an imaginary part at each frequency point of a frequency domain signal; arranging acquired amplitudes in a descending order, and acquiring a screening threshold by an amplitude ratio method; screening an amplitude through the screening threshold and constructing frequency domain signal data; acquiring a row vector of a system matrix corresponding to each frequency point of the data, so as to construct an update system matrix; and solving, based on the frequency domain signal array and the update system matrix, an inverse problem in a form of a least square based on an L2 constraint to obtain a three-dimensional magnetic particle concentration distribution result, so as to achieve a fast reconstruction of the MPI system.

    Industrial 5G dynamic multi-priority multi-access method based on deep reinforcement learning

    公开(公告)号:US12035380B2

    公开(公告)日:2024-07-09

    申请号:US17296509

    申请日:2020-12-25

    CPC classification number: H04W74/0875 G06N3/045 H04L5/003 H04W74/002

    Abstract: An industrial 5G dynamic multi-priority multi-access method based on deep reinforcement learning includes the following steps: establishing an industrial 5G network model; establishing a dynamic multi-priority multi-channel access neural network model based on deep reinforcement learning; collecting state, action and reward information of multiple time slots of all industrial 5G terminals in the industrial 5G network as training data; training the neural network model by using the collected data until the packet loss ratio and end-to-end latency meet industrial communication requirements; collecting the state information of all the industrial 5G terminals in the industrial 5G network at the current time slot as the input of the neural network model; conducting multi-priority channel allocation; and conducting multi-access by the industrial 5G terminals according to a channel allocation result. The method allocates multiple channels to the industrial 5G terminals of different priorities in the industrial 5G network in real time to ensure large-scale concurrent access.

    Method and device for simultaneous independent motion measurement of multiple probes in atomic force microscope

    公开(公告)号:US11892471B2

    公开(公告)日:2024-02-06

    申请号:US17757328

    申请日:2021-05-08

    CPC classification number: G01Q20/02 G01Q60/38

    Abstract: A device capable of simultaneous independent motion measurement of multiple probes in an atomic force microscope includes at least two cantilever arms arranged in parallel. The end of each cantilever arm is provided with a needle tip. The surface of each cantilever arm is provided with a grating structure with a periodic distribution rule for reflecting laser irradiated on the grating structure and receiving the laser through reflected light detectors. The discrimination and motion measurement includes the steps of irradiating the measurement laser of different wavelengths on the back surfaces of multiple probes through the same light path at the same time, adopting the grating structures of different feature sizes as physical labels of the multiple probes and reflecting high-order reflected light of the laser of different wavelengths by the grating structures at different angles to separate the light path.

    Non-uniform excitation field-based method and system for performing magnetic nanoparticle imaging

    公开(公告)号:US11771336B2

    公开(公告)日:2023-10-03

    申请号:US17811235

    申请日:2022-07-07

    CPC classification number: A61B5/0515 G01R33/54

    Abstract: The present disclosure belongs to a field of biomedical imaging technology, and in particularly to a non-uniform excitation field-based method and system for performing a magnetic nanoparticle imaging. The present disclosure includes: separating the non-uniform excitation field into independent space and current time functions by a spatialtemporal separation method; calculating a normalized signal peak through the current time function; constructing a reconstruction mathematical model based on the normalized signal peak and an imaging subunit volume; and quantitatively reconstructing a spatial distribution of a nanoparticle by combining the normalized signal peak, a non-uniform spatial function of the excitation field and the reconstruction mathematical model, so as to achieve the magnetic nanoparticle imaging of a to-be-reconstructed object.

    ONLINE DETECTION DEVICE AND METHOD FOR UNDERWATER ELEMENTS BASED ON LIBS TECHNOLOGY

    公开(公告)号:US20230304936A1

    公开(公告)日:2023-09-28

    申请号:US18318045

    申请日:2023-05-16

    CPC classification number: G01N21/718 G01N2201/023 G01N2201/0218

    Abstract: An online detection device underwater elements includes an LIBS system in a sealing pressure chamber and an external airflow control system. The airflow control system has a gas probe bin and a gas source. An opening is formed at one end of the gas probe bin while the other end and the sealing pressure chamber are hermetically partitioned through a glass window. A laser in the LIES system outputs laser to an underwater object surface to be detected for generating plasma spectra. A spectrometer collects plasma spectra returned along an original optical path. When the device operates in water, the balance gas storage tank produces gas with the same pressure as underwater. A flow model is invoked according to the current water pressure to accurately control the air flow rate to form a stable gas environment in the gas probe, which improves the plasma excitation and collection efficiency.

    Control system based on multi-unmanned aerial vehicle cooperative strategic confrontation

    公开(公告)号:US11669110B2

    公开(公告)日:2023-06-06

    申请号:US17261036

    申请日:2020-08-13

    CPC classification number: G05D1/104 G05D1/0088 G05D1/0094

    Abstract: The control system based on multi-unmanned aerial vehicle (UAV) cooperative strategic confrontation includes a management module, a UAV formation module, a situation assessment module, a decision-making module, and a cooperative mission assigning module of both sides in a confrontation. The management module is configured to store state information acquired by the UAV formation module. The UAV formation module is configured to acquire state information of UAVs and execute a control instruction. The situation assessment module is configured to acquire situation assessment information according to the state information. The decision-making module is configured to acquire a countermeasure based on the situation assessment information. The cooperative mission assigning module is configured to generate control instructions for the UAVs based on the countermeasure and in combination with a confrontation target and an optimal situation assessment value.

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