7 results about "Optical noise" patented technology

This invention discloses a dual-laser synergistic high-temperature, high-speed rotating object axial vibration measurement device, relating to the field of vibration detection technology. It includes a main plate and a radiation-resistant plate mounted on the main plate. A drive motor is installed on the main plate. Measuring the dynamic characteristics, such as axial vibration, of a high-speed rotating object at high temperatures is a challenging problem. This device uses a dual-laser measuring instrument for measurement, and also features non-contact functionality. Furthermore, the dual lasers can compensate for light path disturbances caused by hot airflow. Specifically, one laser acts as the main measurement optical path, while the other acts as a reference optical path, specifically monitoring common path optical noise caused by hot airflow. Through differential calculations by a subsequent signal processor, environmental noise is subtracted from the main signal, thereby extracting the pure vibration signal of the measured turntable.

The application provides a single-cell protein high-resolution quantitative detection system and method based on a micro-droplet compression channel, and the system composition comprises: a micro-droplet lysis and generation module, which is used for realizing the falling of a single-cell dyeing antibody in a droplet; a micro-droplet quartz compression channel detection module, which is used for realizing the collection and detection of a single-cell protein fluorescence signal in a micro-droplet; a micro-droplet fluorescence signal collection and processing module, which is used for processing and analyzing the collected fluorescence signal; and a micro-droplet driving module, which is used for realizing the flow rate control of the micro-droplet in a micro-channel. The application reduces optical noise by using quartz instead of a common base material, reduces electrical noise by using a sine wave to control a laser source to modulate fluorescence, and has a significant two-order-of-magnitude improvement in detection resolution compared with existing methods; and the application realizes high reliability and accuracy of detection results by optimizing the composition of a cell lysis solution compared with existing methods.

The present application relates to the technical field of intelligent detection of transformer substations, and more particularly to a power distribution substation intelligent inspection method and system for urban power grids, comprising: collecting multi-source inspection feature data and performing space-time dimension alignment, obtaining a target area corresponding to the to-be-tested equipment in infrared thermal imaging data, and associating and identifying a three-phase equipment group to which the target area belongs; constructing a thermal load evolution offset index of each sampling time, which is used to quantify the matching degree between the cumulative Joule heat effect generated by the current in a specific time period and the actual temperature rise at the sampling time. The present application constructs a thermal balance window in the time dimension to eliminate thermal inertia errors, and combines three-phase balance degree and image texture features in the space dimension to filter optical noise, thereby accurately identifying real high-temperature thermal defects, greatly improving the inspection accuracy of intelligent robots, and releasing grassroots operation and maintenance human resources.

This invention belongs to the field of 3D reconstruction technology, specifically involving a dynamic vehicle reconstruction method and system based on 3D Gaussian splashing and triangular mesh. The provided dynamic vehicle reconstruction method, in addition to 3DGS and Mesh reconstruction methods, incorporates vehicle characteristics and designs algorithms such as scale restoration, vehicle surface patching based on the "side skirt locking" optimization mechanism, and vehicle componentization. This eliminates optical noise and reconstructs regular continuous surfaces, improving the reconstruction effect for dynamic vehicles and increasing the utilization rate of reconstructed assets. It can simultaneously obtain high-precision 3DGS and Mesh reconstruction results for dynamic vehicles.

The application provides an optical noise suppressor, a manufacturing method and an application, and the optical noise suppressor comprises a substrate, a piezoelectric driving structure and a top cover, the substrate is provided with a vertical through-space in the substrate, the vertical through-space is provided with a grating structure, and the grating structure is connected with the substrate through a cantilever beam structure; the piezoelectric driving structure is located above the cantilever beam structure, and the piezoelectric driving structure comprises a bottom electrode metal layer, a piezoelectric film layer and a top electrode metal layer which are stacked from bottom to top; the top cover is bonded and connected above the substrate, the lower surface of the top cover is provided with a reflection layer, and the projection of the reflection layer on the substrate covers the grating structure, wherein the cantilever beam structure can be deformed after a voltage is applied to the piezoelectric driving structure, and then the distance between the grating structure and the top cover is changed. In the application, the distance between the grating structure and the reflection layer can be accurately controlled through voltage driving, the reference light intensity can be controlled and monitored in real time, and the application has the advantages of full automation and high precision.

This invention discloses a method for intelligent recognition and deployment of multiple targets underwater based on lightweight YOLOv8, belonging to the field of intelligent recognition technology for multiple targets underwater. It involves constructing an underwater multi-target recognition image dataset; obtaining a trained color-aware lightweight YOLOv8 detection model; generating enhanced underwater optical images and global color bias vectors; outputting shallow high-resolution feature maps that preserve the geometric details of small targets, and deep low-resolution feature maps containing target semantic information; generating shallow and deep color bias embedding feature maps; generating a noise-resistant fusion feature map set; generating target category probabilities and target bounding box prediction results; and achieving real-time recognition and localization of multiple targets underwater. This invention effectively reduces the impact of suspended particle scattering, background flickering textures, and local optical noise on target detection, improving the robustness of underwater multi-target detection in turbid water environments.

This invention relates to the field of optical communication technology, and in particular to an optical power detection device and method, comprising: an optical power detection module, an optical noise detection module, and a control module; the optical power detection module and the optical noise detection module are respectively connected to the control module; the optical power detection module is used to receive the optical signal to be measured and convert the optical signal to be measured into a first signal; the optical noise detection module is used to receive the ambient light signal and convert the ambient light signal into a second signal; the control module is used to obtain the optical power of the optical signal to be measured based on the first signal and the second signal; this invention receives the optical signal to be measured through the optical power detection module and receives the ambient light signal through the optical noise detection module, and through the design of corresponding circuits, eliminates the influence of background noise on the actual optical power through a combination of hardware, software, and optics, improves the accuracy of optical power detection, ensures the stability of optical communication, and is suitable for optical power detection scenarios in various environments.