8 results about "Diagnostic equipments" patented technology

The invention provides a transformer substation unmanned aerial vehicle inspection method and system based on multi-modal data fusion. The method comprises the steps that a visible light image, an infrared thermogram and laser point cloud data of a transformer substation are collected; performing cross-modal registration on the visible light image, the infrared thermogram and the laser point cloud data to map texture information of the visible light image and temperature information of the infrared thermogram into a unified three-dimensional space model, and constructing a transformer substation live-action three-dimensional fusion model; identifying and segmenting independent substation equipment units, and extracting multi-dimensional features from the three-dimensional geometry, the surface texture and the temperature field; and comparing the multi-dimensional features with an equipment health reference model preset in the digital twin of the transformer substation in real time, and analyzing the feature deviation degree to obtain the mechanical stability, the electrical insulation state and the thermal operation state of the diagnostic equipment. According to the method, multi-source heterogeneous data can be effectively fused, and the equipment state can be comprehensively and accurately evaluated in a unified spatial model.

The application belongs to the field of medical instrument imaging diagnosis equipment quality detection, and particularly relates to a phantom and a method for coronal plane transmission detection of a three-dimensional ultrasonic imaging device. The phantom comprises: an upper panel, an acoustic window, a target group, and an aggregate formed by background ultrasonic tissue simulation material. The upper panel is located above the acoustic window, and the upper panel and the acoustic window form an inner cavity after being connected. The target group and the aggregate formed by the background ultrasonic tissue simulation material are located in the inner cavity. When the coronal plane transmission imaging performance is detected, the phantom is suspended in the imaging area of a hemispherical ultrasonic array, and a degassed water body is also contained in the imaging area. Each target in the target group extends along the vertical direction and is perpendicular to the coronal plane of the breast to be imaged. In this way, the convenience and accuracy of the coronal plane transmission imaging performance detection are improved, and the utility is good.

The invention discloses a wind fire extinguisher detection method and system based on field operation scene reconstruction, and relates to the technical field of intelligent measurement and testing, and the method comprises the steps: collecting operation operation data through an intelligent sensor, constructing a three-dimensional operation scene model, building a space projection relation between airflow propagation and terrain, and calculating the blocking effect of the terrain on airflow; and determining an airflow action boundary. And superposing the airflow action boundary and the combustible distribution, and calculating the proportion of the uncovered area to obtain a coverage effectiveness index. The method comprises the following steps: extracting time sequence data of coverage effectiveness indexes and equipment operation parameters under different operation positions, identifying response delay characteristics of parameter changes to the indexes, constructing influence weight distribution after time delay compensation, and identifying a parameter sensitive interval; and analyzing the fluctuation amplitude of the equipment parameters under different terrains in the sensitive interval, diagnosing the performance degradation mode of the equipment, and outputting a performance evaluation result. The operation efficiency and the equipment management level of the pneumatic extinguisher can be improved.

The present application relates to a kind of GIS disconnecting switch mechanical state on-line evaluation method based on VFTC, comprising: obtaining the VFTC full process waveform generated in the process of switching on and off of GIS disconnecting switch when no fault, VFTC full process waveform is composed of multiple single breakdown oscillation waveform;The expectation and variance of the peak value of each single breakdown oscillation waveform when no fault are calculated based on Gaussian process regression model;The upper and lower threshold of the peak value of each single breakdown oscillation waveform is set based on the value of expectation and variance, the proportion of the number of the peak value of each single breakdown oscillation waveform of the equipment to be diagnosed in the corresponding upper and lower threshold range is counted, whether the equipment to be diagnosed produces fault is evaluated based on the proportion;It can realize the on-line monitoring of GIS disconnecting switch mechanical state without power, without periodic power-off disassembly calibration, save a lot of manpower and material resources, while various potential mechanical faults can be found in time, avoid its further development deterioration, guarantee the stable operation of GIS disconnecting switch and power system.

The invention belongs to the technical field of industrial automatic control, and particularly relates to a blast furnace tuyere inspection robot control method and system, a navigation positioning module in the system performs fusion processing on environment point cloud data acquired by a laser radar and image data acquired by a visual sensor, and positioning, map construction and path planning of an inspection robot are realized; in the positioning and map building process, the three-dimensional motion vector of a point in a scene is calculated in combination with optical flow information and depth information, and a dynamic object area is separated and removed through motion residual clustering; the data acquisition module controls a sensor group mounted on the inspection robot and detects the blast-furnace tuyere; the state diagnosis module identifies the tuyere burning loss defect and diagnoses the abnormal state of the equipment by using the multi-source data; the predictive maintenance module predicts the remaining service life or the fault occurrence probability of the key component through a predictive maintenance model based on the historical operation data and the abnormal state data of the equipment.

The invention provides an anti-interference multichannel optoelectronic isolation trigger for a pulse power system, and relates to the technical field of pulse power. The invention provides an anti-interference multi-channel photoelectric isolation trigger for a pulse power system. The anti-interference multi-channel photoelectric isolation trigger comprises a multi-channel electricity-to-light device and a plurality of light-to-electricity devices, wherein the multi-channel electricity-to-light device and the plurality of light-to-electricity devices are placed in two independent cavities; the multi-channel electricity-to-light conversion device comprises an electricity-to-light conversion module. The light-to-electricity device comprises a totally-enclosed light-to-electricity shielding shell, and a light-to-electricity module is arranged in an inner cavity of the light-to-electricity shielding shell; the electricity-to-light module is used for converting an electric signal of external equipment into a light signal, and the light signal is transmitted to the light-to-electricity circuit through an optical fiber; the light-to-electricity circuit is used for converting light signals into electric signals, and the electric signals converted by the light-to-electricity circuit are used for triggering external diagnostic equipment. The device is suitable for photoelectric conversion triggering application in a strong electromagnetic environment, and the characteristics of low jitter and high precision of multiple paths of triggering signals are realized.

The invention discloses a cost-saving optical detection device and a blood coagulation analyzer, and relates to the technical field of in-vitro diagnostic equipment, the adopted technical scheme comprises a first light emitting unit, a second light emitting unit, a dichroscope and a light receiving unit, the first light emitting unit and the second light emitting unit respectively comprise a light source and a light filter arranged between the light source and the dichroscope; light beams emitted by the first light emitting unit are reflected by the dichroscope to form a reflection light path, light beams emitted by the second light emitting unit penetrate through the dichroscope to form a transmission light path, the optical axis of reflection light in the reflection light path is parallel to the optical axis of transmission light in the transmission light path, and the light receiving unit receives the reflection light and the transmission light. Switching of light rays with different wavelengths is achieved through switches of the dichroscope and the two light-emitting units, independent adjustment of the light intensity of the light rays with different wavelengths is achieved by changing the installation positions of the two light-emitting units, the LED lamp panel replaces a halogen lamp to serve as a light source, heating is low, and the service life is long.

The utility model belongs to electrical equipment insulation defect diagnosis technical field, concretely relates to electrical equipment insulation defect multispectral diagnosis equipment, including shell, optical module and data processing module, still include acoustic module, acoustic module includes ultrasonic sensor and the acoustic wave focusing cover of sleeve joint installation inductive front end outside ultrasonic sensor, a plurality of modularized installation grooves are provided in the shell, acoustic module, optical module and data processing module all are installed in modularized installation groove through standardization interface, acoustic module and optical module all are connected with data processing module electricity, in the utility model, ultrasonic sensor can capture 20-100kHz characteristic ultrasonic wave of partial discharge, cooperate the data of optical module collection, realize more comprehensive, accurate electrical equipment insulation defect diagnosis.