6results about How to "For quick inspection" patented technology

The present application relates to a kind of track crack detection devices based on magneto-optic, belong to crack detection technical field.The device includes: surface light source, for generating light beam;Magneto-optic sensor, at the surface of measured track preset distance, for sensing the leakage magnetic field generated by measured track due to crack in magnetic field environment, and leakage magnetic field information is modulated as the polarization state change of reflected light beam;Industrial camera, for collecting reflected light beam after being modulated by magneto-optic sensor, generate magneto-optic image;Control processing module is at least connected with industrial camera, for receiving magneto-optic image, and identifying crack in measured track.By the device, real-time online detection under normal running speed of train can be realized.And detection is not covered by surface contaminants such as oil stain, rust mark, water stain, dust.

This invention relates to the field of unmanned aerial vehicle (UAV) patrol technology, and more particularly to a UAV radar monitoring method and equipment for the sea area near a nuclear power plant's water intake. The UAV radar monitoring method for the sea area near a nuclear power plant's water intake includes: acquiring the monitoring and early warning requirements for floating objects on the sea surface and the target flight area, obtaining the monitoring and early warning threshold and the location range of the UAV's patrol flight area; determining the UAV patrol path and patrol strategy based on the monitoring and early warning threshold and the location range of the UAV's patrol flight area; conducting patrols according to the patrol strategy and the UAV patrol path, and acquiring graphic data of the target patrol path; performing recognition processing on the graphic information of the target patrol path to obtain the recognition result; and determining whether the recognition result meets preset alarm conditions, and issuing an early warning if it does. This invention enables rapid, large-scale patrols, recording, and analysis of the sea area near a nuclear power plant's water intake, improving the accuracy of monitoring floating objects in the large-scale sea area near a nuclear power plant's water intake.

The utility model provides a modular multifunctional handheld filter rod detection device belongs to tobacco product detection equipment technical field, including detection board main part, the upper portion of detection board main part is provided with filter rod height detection subassembly, and the lower portion is provided with filter rod comprehensive detection module and storage cabin, filter rod comprehensive detection module includes a plurality of standard filter rod measurement round holes of opening in the lower portion of detection board main part and at least one collins filter rod detection hole, and the detachable filter rod measurement sleeve can be selectively inserted in standard filter rod measurement round hole, the shape of collins filter rod detection hole is adapted to collins filter rod appearance, and its inside is fixedly provided with the mandrel, be provided with the storage drawer of pull -out in storage cabin, be provided with the rack of a plurality of placement holes in storage drawer. The utility model integrates multiple detection functions, realizes fast, accurate, portable filter rod multi -parameter detection, effectively solves the quality control problem of composite filter rod, special-shaped filter rod.

This utility model discloses a drone-mounted photovoltaic panel cleaning device, comprising a drone, a drone hanger mounted on the bottom of the drone, and a cleaning device mounted on the bottom of the drone hanger. The cleaning device includes a main pipe and branch pipes, with the branch pipes distributed on both sides of the main pipe and fixedly connected to the bottom of the drone hanger. A ducted fan is installed at the front opening of the main pipe, and a liquid container is installed at the top front of the main pipe. A downward-spraying atomizing nozzle is installed at the end of the branch pipe furthest from the main pipe. This utility model, by using a drone mounted on a cleaning device for cleaning and maintaining photovoltaic equipment, can reduce the large amount of travel required for traditional manual inspections, thereby reducing carbon emissions. Simultaneously, the drone can quickly inspect and clean flexible photovoltaic power stations in mountainous areas, significantly shortening the inspection and maintenance cycle and improving work efficiency.

The invention belongs to the technical field of photovoltaic module nondestructive testing, and particularly relates to a photovoltaic module internal circuit integrity detection method and system based on magnetic field rotation imaging, and the method comprises the steps: collecting discrete three-dimensional magnetic field data of a photovoltaic module; spatial interpolation is carried out on the discrete three-dimensional magnetic field data, and a high-density magnetic field vector grid with second derivative continuity is constructed; constructing a current density vector by using the space partial derivative of the magnetic field vector based on the physical constraint of the Maxwell-Ampere law; the Euclidean norm of the current density vector is calculated, and the magnetic field rotation full modulus is obtained; and performing adaptive enhancement processing on the calculated magnetic field rotation full modulus to generate a thermodynamic diagram reflecting current distribution, and identifying current abnormality caused by grid breakage, pseudo soldering or subfissure according to continuous fracture or strength attenuation of a highlight area in the thermodynamic diagram. According to the invention, high-resolution and visual imaging of current abnormal defects such as broken gates, cracks and pseudo soldering can be realized under outdoor natural illumination.

This invention discloses a rapid bridge damping ratio identification method based on a stationary inspection vehicle, belonging to the field of bridge structure vibration testing technology. The method includes: parking the inspection vehicle at the mid-span of the bridge under inspection; exciting the bridge vibration using a passing vehicle and then driving away; collecting the acceleration response of the inspection vehicle in the attenuation segment; establishing a dynamic model of the attenuation segment of the vehicle-bridge coupled system; constructing a two-degree-of-freedom joint state model, internalizing the vehicle-bridge interaction force as a linear combination of system state variables; extracting the effective attenuation segment through signal preprocessing and introducing a dual anti-noise mechanism of adaptive signal-to-noise ratio weights and Huber weights; and employing a profiled two-stage parameter identification strategy, first locking the frequency and modal mass, and then finely scanning and identifying the bridge's first-order damping ratio. This invention requires only a single inspection vehicle and an acceleration sensor, eliminating the need to deploy sensors on the bridge structure. It has strong anti-interference capabilities, high identification accuracy, and is suitable for rapid inspection of small-to-medium span bridges.