7results about How to "Simple system architecture" patented technology

This invention relates to a method and system for multi-source information knowledge fusion and intelligent retrieval. The method includes: acquiring multi-source heterogeneous data and performing unified knowledge modeling on the multi-source heterogeneous data to obtain a unified knowledge framework. Based on the unified knowledge framework, a large language model is invoked to perform structured preprocessing on the multi-source heterogeneous data to generate structured knowledge triples. The structured knowledge triples are then structured using attribute graphs, and the associated data of each entity is vectorized and stored using an embedding model to obtain a fused knowledge body. User query requests are received and responded to by performing deep analysis on the user input data to obtain the user's query intent and query elements. A condition graph is constructed based on the user's query intent and query elements, and the condition graph is mapped to a knowledge network for entity localization and condition graph matching to generate structured retrieval results. This reduces network overhead and scheduling latency, and improves retrieval response speed and accuracy.

This invention relates to a robust image semantic perception adaptive masking transmission method for vehicle-to-everything (V2X) networks, comprising: Step 1: The transmitting end performs semantic analysis on the original input image, extracts high-precision semantic features, and identifies the regions of interest (ROI) and non-ROI regions of interest (NROI); Step 2: A Boolean mask is dynamically generated based on the semantic segmentation result and SNR; Step 3: The ROI features are directly masked based on the Boolean mask; Subsequently, the processed feature map is fed into a semantic encoder to extract multi-scale semantic features; Step 4: Power normalization is performed, dynamic feature encoding is performed, and then the encoded signal is transmitted through a typical analog wireless channel, and noise is superimposed before reception and recovery; Step 5: The receiving end receives the noisy feature signal, performs channel fading compensation and preliminary denoising, and sends the decoded features into a semantic decoder; Through progressive upsampling and multi-level semantic reconstruction, multi-scale features are fused, and finally, a high-quality reconstructed image is recovered and output.

The application relates to the field of backscatter technology and discloses a single-receiver WiFi backscatter communication method and system, which comprises the following steps: a tag receives OFDM symbols from ambient WiFi signals, a linear phase factor corresponding to a tag-related cyclic shift value is applied to only the middle part of a data load, and the OFDM symbols of a reflection signal are reconstructed based on the middle part of the modulated data load; a receiver extracts the modulated part from the received OFDM symbols of the reflection signal, performs frequency domain inverse shift compensation on each candidate cyclic shift value, obtains a reconstructed data load based on the obtained compensated spectrum, calculates the correlation score between the power spectrum of the reconstructed data load each time and a binary template predefined based on the position of the empty subcarrier, decodes the cyclic shift value, and recovers the corresponding tag data. The application can realize a high data throughput without sacrificing OFDM compatibility.

This invention relates to the field of motion detection technology, and discloses a primary motion detector based on a PN junction channel, its fabrication method, and a sensor. The primary motion detector includes a first phototransistor and a second phototransistor. The first phototransistor is configured to operate under a source-drain forward bias, and its photocurrent decay process during turn-off has a first fast decay time constant and a first slow decay time constant. The second phototransistor is configured to operate under a source-drain reverse bias, and its photocurrent during turn-off has a second fast decay time constant and a second slow decay time constant, wherein the first fast decay time constant is greater than the second fast decay time constant. When a light pulse moves along the direction from the first phototransistor to the second phototransistor, a directional current pulse can be detected at the output of the primary motion detector. This invention achieves high-efficiency and low-power discrimination of the direction of light signals.

The application relates to the field of silicon-based optoelectronic integration, and particularly discloses an on-chip adaptive combining method and a feedback system for polarization diversity MZM, which comprises the following steps: optical coupling and mode conversion, polarization diversity electro-optical modulation, optical power collection and photoelectric conversion, signal processing and feedback control, and a tunable combining module; after the coupling conversion and modulation, two-way optical power is collected and photoelectrically converted, a power difference voltage is obtained through an analog circuit, a control voltage is generated by superimposing a bias voltage, and a tunable combiner is driven to dynamically adjust a beam splitting ratio to complete combining. The application solves the problems that the output power of the polarization diversity MZM randomly fluctuates with the polarization state, the existing polarization control scheme has slow response, a complex structure and is difficult to integrate with a silicon-based process, realizes real-time and accurate compensation of power fluctuation, guarantees stable combining output power, and has a simple system structure, low power consumption, is easy to monolithically integrate with a silicon-based chip, and improves the performance and compatibility of an integrated photonic link.

This application relates to an integrated fiber optic dual-parameter monitoring system for seawater metal-air batteries, its monitoring method, and its application, belonging to the field of battery monitoring technology. The monitoring system of this application includes a seawater metal-air battery cell, an integrated fiber optic sensing unit, and a spectral demodulation module. The seawater metal-air battery cell includes an oxygen reduction cathode, which comprises an electrode composite substrate and a catalyst layer loaded on the electrode composite substrate. The integrated fiber optic sensing unit includes a single optical fiber, on which a first fiber Bragg grating and a second fiber Bragg grating are sequentially arranged along the axial direction. The spectral demodulation module is optically connected to the optical fiber and is used to receive and analyze the wavelength signal of the reflected light. The monitoring system provided in this application utilizes a single optical fiber to achieve simultaneous monitoring and cross-sensitivity decoupling of stress and temperature dual parameters, and has advantages such as compact structure, low cost, and high measurement accuracy. It can be applied to the health status assessment and failure early warning of seawater metal-air batteries.

This invention discloses a wireless charging system with an adjustable polarity coupling structure, relating to the field of wireless power transmission technology. The identification and judgment module, based on the transmitting coil, achieves reconfigurable identification of the coupling structure through a three-step collaborative strategy. The intelligent control module controls the reconfigurable inverter to sequentially excite preset basic transmitting coil modes. During each excitation, the amplitude and phase characteristics of the transmitting end input impedance are calculated, generating a frequency-impedance characteristic curve. The frequency-impedance characteristic curve is then compared and matched in real-time with the reflection impedance spectra of various standard receiver models pre-stored in a feature library. The dynamic polarity adjustment module performs estimation and closed-loop control based on real-time measured online parameters. This wireless charging system is highly compatible with various receivers, including unipolar, bipolar, and quadpolar types, achieving automatic identification and adaptation, thus improving versatility, flexibility, and reliability.