3results about How to "Avoid signal loss" patented technology

This invention discloses a partial discharge interference suppression method based on pulse period consistency evaluation. First, the partial discharge signal is analyzed using a cumulative energy function to calculate the average energy. Em Then, a cumulative energy curve is constructed, and after smoothing and filtering, local minima are identified as pulse start points and local maxima as pulse end points, allowing for accurate extraction of pulse timestamps. Next, periodic consistency is evaluated based on the pulse time series: the interference period is estimated using a third-order autocorrelation function. T Then, time deviation score and energy consistency score are calculated separately to quantify the periodicity characteristics of the pulse through dual scoring. Finally, pulses with scores all above the threshold are identified as periodic interference, and the partial discharge quantity of their corresponding time period is set to zero. This invention does not require changes to the hardware connection, can adaptively distinguish and eliminate periodic interference generated by power electronic devices, improve the accuracy and reliability of partial discharge monitoring, and overcome the shortcomings of traditional manual window selection methods.

A system and method for early warning of falls into water by maintenance personnel in floating photovoltaic power plants is applicable to agricultural-photovoltaic complementary scenarios such as fishponds. Through waterproof safety equipment worn by maintenance personnel, the system achieves dual determination of the fall-in status. After triggering an early warning, a signal is transmitted via a dual-band communication module, and after validity verification by the base station, it is synchronized to the backend and rescue terminal. The system adopts a tiered response mechanism: the first-level response dispatches rescue forces within 300 meters of the fall-in point; if no confirmation is made within a short time, a second-level response is automatically triggered. The rescue terminal plans an obstacle avoidance path based on preset 3D data of the fishpond, prioritizing the avoidance of obstacles such as photovoltaic piles and deep water areas. On-site, specialized tools such as telescopic rescue poles and fluorescent waterproof lifebuoys are used to carry out targeted rescues based on the personnel's conscious state, and real-time feedback of rescue node information is provided. After the rescue is completed, vital sign checks and medical coordination are conducted, and a fully traceable summary report is generated. This invention shortens the rescue response time and improves scenario adaptability and process standardization.

This application discloses a distributed fiber optic vibration sensor wiring method and wiring device for bridge structures. The method includes the following steps: determining the key monitoring areas of the bridge; deploying a wiring device in the key monitoring areas; sequentially passing single-mode optical fibers through the fiber inlet and outlet ports to obtain an optical fiber sensing network; winding the single-mode optical fibers according to a set method to form redundant fiber segments; using cyanoacrylate adhesive to couple and fix the straight segments of the main optical fibers along the centerline of the bridge structure to the bridge surface; dynamically adjusting the number of winding turns of the redundant fiber segments by controlling the servo motor in the wiring device according to the real-time vibration frequency and amplitude of the bridge; by deploying a wiring device with redundant optical fibers in the key monitoring areas, the density of local optical fiber sampling points is increased by utilizing the redundant segments to meet the bridge monitoring requirements; and the winding speed is dynamically adjusted by the servo motor to ensure that the optical fibers maintain constant tension during storage and deployment, thus avoiding damage to the optical fibers.