844results about "Fluid-tightness measurement using light" patented technology

A method of operation of an unmanned autonomous vehicle includes autonomously maneuvering the unmanned autonomous vehicle about a facility, collecting gas concentration data using one or more sensors carried on or integrated with the unmanned autonomous vehicle, and monitoring the collected gas concentration data to detect a high concentration due to a gas leak. The method further includes, if a high concentration is detected, estimating a location of the gas leak and maneuvering the unmanned autonomous vehicle toward the estimated location of the gas leak.

Provided is a system and method for pipe monitoring. The system includes a sensor arrangement comprising a visual sensor, an inertial sensor, and a laser projector, and at least one processor configured to: project a laser on an inner surface of a pipe with the laser projector; emit light with a light-emitting device on the inner surface of the pipe; capture a plurality of frames of the inner surface of the pipe with the visual sensor, wherein at least a subset of frames of the plurality of frames is captured while the laser is projected on the inner surface, and wherein the at least a subset of frames or a different subset of frames is captured while the light illuminates the inner surface; and generate a 3D reconstruction of the inner surface of the pipe based on the plurality of frames.

The invention relates to the technical field of optical nondestructive testing equipment for the sealing performance of a blueberry bottle opening, in particular to an optical nondestructive testing device and method for the sealing performance of the blueberry bottle opening. According to the technical scheme, the optical nondestructive testing device for the sealing performance of the blueberry bottle opening comprises an optical testing device, mounting grooves, a lead screw, a mounting support, a mounting ring, a Fresnel lens, a micrometer caliper, a double-color laser line light source and a rotating motor, and the mounting grooves are formed in the two sides of the interior of the optical testing device; compared with a traditional optical nondestructive testing device for the sealing performance of the blueberry bottle opening, a single light source or a simple lens group is mostly adopted, a 360-degree annular area of the bottle opening is difficult to cover, illumination on the edge of the bottle opening or a complex curved surface area is insufficient, and tiny defects are prone to being omitted; according to the optical nondestructive testing device for the sealing performance of the blueberry bottle opening, the double-color laser line light source is matched with the Fresnel lens array, multispectral reflection data are synchronously collected, the surface micro-mark contrast is enhanced by utilizing wavelength difference, and the monochromatic light detection sensitivity is effectively improved.

Apparatus and methods for monitoring the status of a floating roof. The floating-roof tank assembly has: an impermeable roof section, and a floating-roof seal configured to span between the impermeable roof section and components of a container. One or more deformable floats are attached to the roof section to provide buoyancy so that the roof floats on top of the liquid contained in the container. To monitor the status of the floating roof tank, it is provided with a fiber optic sensor array comprising one or more fiber optic sensors. A light source configured to transmit light to the fiber optic sensors and a receiver configured to detect light from each fiber optic cable after it has interacted with the fiber optic cable. Based on the received light, a controller configured to process the light received by the receiver to determine the status of the floating roof tank.

The invention discloses a transformer oil leakage detection method and device based on polarization-ultraviolet fusion imaging, and the device comprises a housing, a support, a camera, an environment induction device, an overall controller, a power supply, a polaroid rotating wheel assembly, a lens seat assembly, and an image processor. And the motor driver, the illumination intensity sensor, the ultraviolet irradiance sensor, the image processor and the power supply are electrically connected with the integral controller respectively. According to the invention, a multi-angle polarization image and a non-polarization image in the same field of view can be acquired, and then polarization characteristics contained in an oil stain fluorescence signal are extracted and effectively distinguished from non-polarization characteristics of background light; in the daytime mode, the transformer oil leakage detection device can identify a target area with relatively high polarization intensity, and through image fusion enhancement processing, non-target background signals are significantly suppressed, and the fluorescence significance of an oil leakage characteristic area is improved.

The invention provides an eccentric butterfly valve performance detection method and system based on optical detection. The method comprises the steps that a first image of light transmission intensity distribution of a sealing pair structure of a bidirectional all-metal hard sealing four-eccentric butterfly valve is obtained; acquiring a reflection interference image of the structured light on the sealing pair structure according to the phase modulation structure grating light field, and performing conjoint analysis in combination with the first image to generate a contact pressure distribution matrix; based on the first image and the contact pressure distribution matrix, extracting corresponding multi-dimensional image features to generate a leakage early warning area map; space comparison is carried out on the leakage early warning area map and the floating response track of the sealing pair structure in the opening and closing process, and the corresponding floating response characteristics of the leakage early warning area in the opening and closing process are determined; and generating a butterfly valve sealing performance detection result according to the abnormal degree of the floating response characteristics. Through the implementation of the scheme, the leakage early warning area and the corresponding dynamic abnormal characteristics can be identified in advance, and the safety and the operation stability of the system are improved.

This gas leakage monitoring device comprises: an image data acquisition unit that acquires, as original image data, image data generated by capturing images at different times; a vector generation unit that selects two pieces of original image data in chronological order from the original image data, and performs predetermined image processing for calculating the movement direction and movement speed of an object included in the images, for the selected two pieces of original image data, to generate a vector indicating the movement direction and movement speed for each pixel included in the original image data; and a frequency distribution generation unit that classifies the vectors generated by the vector generation unit into sections of predetermined vector lengths, and generates a frequency distribution for gas leakage monitoring.

The invention discloses a metal powder packaging quality detection system based on machine vision, and relates to the technical field of visual inspection, the system comprises a visual acquisition module, an image processing module and a central processing module, the visual acquisition module is used for acquiring at least one group of detection images of each metal powder packaging bag; the visual acquisition module transmits the detection image module to the image processing module; after the image processing module receives the detection image, the detection image is matched with the corresponding technical powder packaging bag, and the image processing module preprocesses the detection image; and after receiving the preprocessed detection image, the central processing module performs visual identification on the detection image to obtain use quality data of the packaging bag. Through combination of the visual sensor module and the image processing module, accurate detection of the quality of the packaging bag is realized, and the packaging bag can be monitored in real time.

The invention discloses a hydrocarbon gas leakage infrared imaging detection system and a detection method. The system comprises a front end and a monitoring terminal. The front end comprises an infrared optical lens, an uncooled IRFPA assembly and a video processing and system control device. The infrared optical lens comprises a medium-wave infrared objective optical lens and a long-wave infrared objective optical lens; the transmittance of the uncooled IRFPA assembly at the infrared band of 6.5-8.5 [mu] m is greater than 90%; the video processing and system control equipment comprises an infrared acquisition module and an infrared image processing module, and the infrared image processing module is configured to acquire an image acquired by the infrared acquisition module through the infrared optical lens and the uncooled IRFPA assembly, and at least process the image through a non-uniform correction algorithm to form a gas signal for the monitoring terminal to call. The system can be simultaneously suitable for detection of various alkane gases.

The utility model discloses a CH4 gas detector of an optical device, relates to the field of gas detection of optical devices, and provides the following scheme aiming at the problem that in the existing practical application, a packaged 2.0 mm window flat window pipe cap is not particularly ideal in product performance index when being used by a client, the CH4 gas detector comprises a pipe seat, a ceramic gasket is connected with the middle part of the upper end of the pipe seat, and the upper end of the ceramic gasket is provided with a hollow cavity; a ceramic gasket is arranged in the tube base, the ceramic gasket is of a detachable adjusting structure, a chip is connected to the upper end of the ceramic gasket, a coated glass sheet is connected to the outer side of the chip, a tube shell is connected to the outer end of the coated glass sheet and the four sides of the upper portion of the tube base, and a mm light-transmitting window is formed in the middle of the upper end of the tube shell. According to the utility model, the structure is novel, the sensitivity and accuracy of the detector are improved by adjusting the thickness of the ceramic gasket and controlling the height from the photosensitive surface of the chip to the glass surface, and the optical performance of the detector is improved by matching with the 3.0 mm light-transmitting window arranged at the middle part of the upper end of the tube shell.

The invention belongs to the technical field of safety monitoring, and particularly relates to a liquid leakage detection alarm system based on optical detection and a method thereof. Comprising a plurality of liquid leakage monitoring alarm terminals, a plurality of portable comprehensive monitoring communication devices, a fixed comprehensive monitoring communication device, and necessary auxiliary devices such as a system server and a comprehensive alarm unit. The liquid leakage monitoring alarm terminal is internally provided with a liquid accumulation tank, and light emitted by a light emitting end in the liquid accumulation tank is received by a light receiving end. When a liquid leakage event occurs, leaked liquid flows into the liquid accumulation groove, the light receiving end cannot receive the light emitted by the emitting end, an output signal of the optical detection module changes, and the liquid leakage monitoring alarm terminal gives a liquid leakage sound-light alarm. And wireless signals are sent to the portable comprehensive monitoring communication machine and the fixed comprehensive monitoring communication machine to carry out remote alarm. The liquid leakage detector is suitable for leakage detection of all liquids, and has the outstanding advantages of simple structure, high reliability, high safety, high sensitivity, miniaturization, easy integration and the like.

The invention relates to a safety protection device for airtightness detection of hydrogen storage equipment, and belongs to the technical field of sealed container detection, the device comprises a protective cover and a hydrogen storage tank to be detected, the hydrogen storage tank is placed in the protective cover, and the airtightness of the tank body is detected by increasing the pressure intensity in the tank body and forming an air pressure difference with the pressure intensity in the protective cover. The air tightness detection unit comprises a transparent tube, a detection outer box body, a piston, a light source and a photosensitive element, whether the air tightness is intact or not is judged by detecting changes of light interference conditions, the device can effectively prevent operators from being hurt by hydrogen leakage in the detection process, meanwhile, the detection precision and efficiency are improved, and the protective cover comprises an upper cover and a lower cover. A complete sealed cavity is formed after splicing, a supporting seat and a sealing ring seat are arranged in the sealed cavity and used for supporting a hydrogen storage tank to be detected and separating a sealed area, through cooperative work of all the components, the device achieves efficient and accurate detection of the air tightness of the hydrogen storage equipment, and meanwhile the safety of the operation process is ensured.

The invention relates to the technical field of gas detection, and discloses a high-sensitivity sulfur hexafluoride detection method and a high-sensitivity sulfur hexafluoride detection system based on cooperation of a long-wave infrared absorption spectrum and a thermal infrared spectrum, which are used for solving the problem that water vapor in a detection area affects a sulfur hexafluoride detection result during sulfur hexafluoride detection. The method comprises the following steps: acquiring long-wave infrared absorption spectrum data and environment abnormal data, acquiring an infrared radiation space distribution diagram of a to-be-detected area, acquiring environment humidity and dew point temperature, obtaining initial detection concentration of sulfur hexafluoride according to the long-wave infrared absorption spectrum data, and calculating the concentration of sulfur hexafluoride according to the environment abnormal data, the environment humidity and the dew point temperature. The method comprises the following steps: acquiring an environmental water vapor influence index through evaluation, performing water vapor interference judgment, and if judging that water vapor interference exists in a current detection environment, correcting an initial detection concentration according to the environmental water vapor influence index to obtain an actual detection concentration, thereby effectively improving the accuracy of a sulfur hexafluoride detection result and reducing the problems of missing detection and false detection.

The invention discloses a detection device for oil and gas pipeline sealing element production, and belongs to the technical field of pipeline sealing element detection, the detection device comprises a detection table and a gas detection mechanism, the detection table is fixedly provided with a fixing frame, and one end of the fixing frame is provided with a sealing driving mechanism; the gas detection mechanism comprises a gas injection part, a gas detection part and a gas auxiliary detection unit; the gas injection part is used for injecting detection gas into the sealing element body, the gas detection part is used for detecting gas leaked from the sealing element body, the gas auxiliary detection unit comprises a light source and an industrial camera, the light source is inserted into the sealing element body, and the upper portion of the light source is connected with the output end of a first motor; the industrial camera and the gas detection part are both located on the outer side of the sealing part body and rotate around the sealing part body. The device has the advantages that various detection modes are coordinated and matched, and all-directional accurate detection of the defects of the sealing element is realized.

To provide a gas leakage monitoring device, a gas leakage monitoring method, and a program capable of indicating presence or absence of gas leakage accurately in a further short period of time.SOLUTION: A gas leakage monitoring device is provided with: an image data acquisition unit which acquires image data, as original image data, generated by being photographed at different time points; a vector generating unit which selects two pieces of original image data in a time series order from the original image data, and generates a vector indicating a moving direction and a moving speed for each pixel contained in the original image data by executing a prescribed image process for calculating the moving direction and moving speed of an object contained in the image to the two pieces of selected original image data; and a frequency distribution generation unit which generates a frequency distribution for gas leakage monitoring by classifying the vector generated by the vector generating unit for each segment of a previously determined length of a vector length.SELECTED DRAWING: Figure 1

The invention relates to an optical fiber accelerometer and a pipeline leakage sensing system. The optical fiber accelerometer comprises a sensing optical fiber, a first mass block, a metal diaphragm, a second mass block and an integrated shell, a tapering structure is manufactured on the sensing optical fiber, and the tail end of the sensing optical fiber is plated with a high-reflection film; the central part of the metal diaphragm is tightly clamped by the first mass block and the second mass block; and the edge part of the metal diaphragm is fixed together by the lower shell and the upper shell of the integrated shell. The pipeline leakage sensing system comprises a detection light source, an optical fiber accelerometer, a multiplexing device, a photoelectric detector, a signal collecting and processing unit and the like. The phase generation carrier unit is used for generating carrier signals, signal demodulation and processing are combined, the system can accurately capture weak vibration signals caused by pipeline leakage, the leakage position is determined through a cross-correlation operation algorithm, and therefore the accuracy and reliability of pipeline leakage monitoring are improved. In addition, the system is low in cost and easy to install and maintain, and has good economical efficiency and expandability.

A leakage electrolyte solution detection device includes a hyperspectral imaging device, an image extractor, and a determination unit. The hyperspectral imaging device includes an optical unit that collects reflected light by scanning a rechargeable battery on which the electrolyte solution injection process has been completed, a dispersive element that disperses light processed by the optical unit, and an image sensor that converts the light dispersed by the dispersive element into an electric signal, and acquires a hyperspectral image of a rechargeable battery. The image extractor extracts an image of a band related to a characteristic wavelength of an electrolyte solution from the hyperspectral image. The determination unit determines a presence or absence of a leakage electrolyte solution by analyzing the image extracted by the image extractor.

The invention provides a system and a method for positioning a gas leakage part of a gas storage. The method comprises the following steps: emitting an optical signal to a first optical fiber arranged in the gas storage; the receiving point receives an optical signal which is changed due to the influence of ultrasonic vibration generated by the leakage point of the gas storage at the monitoring point; an optical signal which is changed due to the influence of ultrasonic vibration generated by a leakage point is converted into an electric signal; converting the electric signal into the length of the first optical fiber from the monitoring point to the receiving point; calculating position information of the monitoring point according to the length of the first optical fiber of the receiving point; calculating the wave velocity of ultrasonic waves; obtaining time differences of light signal changes of different monitoring points; and the position of the leakage point is calculated according to the position information of different monitoring points, the time difference of optical signal change of different monitoring points and the speed of ultrasonic waves. According to the invention, the detection accuracy and convenience can be improved.

The invention relates to the technical field of defect detection, in particular to an automatic cosmetic bottle defect detection system based on machine vision, which comprises a bottle body acquisition module for performing image acquisition on cosmetic bottles on an assembly line, and performing matching and image correction according to cosmetic bottle features in a detection area and preset cosmetic bottle features; obtaining a to-be-detected cosmetic bottle image; the surface defect detection module performs appearance feature recognition on the image of the cosmetic bottle to be detected in combination with the features of the cosmetic bottle, and performs bottle body surface defect detection according to different appearance features; if the defects exist, calculating the overall defect degree, judging whether sales is affected or not according to the overall defect degree, performing early warning and marking cosmetic bottles; the sealing defect detection module is used for processing the to-be-detected cosmetic bottle image by using a bottle opening feature matching algorithm to obtain a bottle opening image, and performing defect detection to judge whether a sealing defect exists or not; if yes, early warning is conducted, and the cosmetic bottles are marked.

The invention discloses a soft package leakproofness detection method and system based on image recognition, and relates to the related field of soft package leakproofness detection.The method comprises the steps that a to-be-detected soft package is placed in a vacuumizing cavity, first-stage infrared irradiation is executed under the first pressure condition, and initial image data are collected; performing negative pressure treatment on the vacuumized cavity to a set pressure threshold value, executing second-stage infrared irradiation under a second pressure condition, and collecting deformation image data; performing registration alignment on the initial image data and the deformed image data, extracting image feature difference data, and calculating a deformation vector of the sealed area according to the image feature difference data; and constructing a soft package surface deformation distribution diagram according to the deformation vector to perform sealing judgment, and determining a package leakage detection result. The technical problem of low efficiency and accuracy of the existing soft package sealing performance detection is solved, and the technical effect of improving the sealing performance detection efficiency and accuracy is achieved.

Methods and systems for detecting anomalies in pipeline operational data. The methods and systems include acquiring operational data, transforming the data into encoded signatures via a feature extraction model, clustering the signatures in a feature space, and calculating an anomaly score based on a comparison to baseline clusters. By comparing the signatures to known event clusters and scoring against a threshold, anomalies of interest in pipeline operations can be efficiently identified, while false detections of anomalies can be greatly reduced.

The invention provides a monitoring system and a monitoring method for monitoring air leakage of an etching process cavity, the monitoring system comprises a wafer etching machine, a detection device and a processing unit, the wafer etching machine comprises an etching process cavity and an alarm device, and the etching process cavity is used for wafer etching; the detection device is arranged on the etching process cavity and is used for detecting a spectral signal of gas to be detected in the etching process cavity in real time and sending a detection result to the processing unit; the processing unit is used for receiving the detection result of the detection device, processing based on the detection result to obtain a spectral signal intensity value of the to-be-detected gas, comparing the spectral signal intensity value with a preset gas alarm value in the processing unit for judgment, and transmitting a judgment result to the alarm device. According to the monitoring system and the monitoring method for monitoring the air leakage of the etching process cavity, the influence range of the leakage of the etching process cavity is prevented from being expanded, and the product yield is improved.

An image capturing system includes an image capturing unit and a processing unit. The image capturing unit includes a first optical adjustment unit to make adjustment of at least one of a focal position and a depth of field of the image capturing unit. The processing unit divides an image capturing visual field of the image capturing unit into a plurality of image capturing regions based on distance information, acquires a plurality of image capturing region images as the background images of the plurality of image capturing regions by having the first optical adjustment unit make the adjustment and having the image capturing unit perform the image capturing of the background surface, and executes the process of detecting the condition of the fluid based on the plurality of image capturing region images.

A method of imaging an internal surface of a conduit, the method including deploying an inspection assembly within an internal volume of a conduit, the inspection assembly having a camera and a lighting array including a plurality of light emitters; illuminating a region of interest on said internal surface using the lighting array; and capturing image data of the region of interest using the camera, the image data including spatial data and intensity data at a plurality of different narrowband wavelength ranges of light.

The invention discloses a carbon dioxide formation leakage monitoring device and method based on distributed optical fiber sensing. The device comprises a simulated formation, an injection system and a DTS system. A thermal insulation device, a thermometer and a production well system are mounted on the simulated stratum; the injection system is used for injecting carbon dioxide and liquid into the simulated stratum; the DTS system comprises a light source assembly, an optical fiber group, a detection assembly and a data acquisition and processing unit which are connected in sequence; a plurality of monitoring points of the optical fiber group are arranged, and the plurality of monitoring points are arranged in the simulated stratum at intervals; the detection assembly is used for detecting Rayleigh scattering frequency shift and Rayleigh backscattering light intensity and phase in the optical fiber group, and the data acquisition and processing unit is used for acquiring signals output by the detection assembly and performing data processing and analysis. According to the invention, fine monitoring and continuous monitoring of carbon dioxide stratum leakage can be realized, the environmental interference resistance is high, and the installation and maintenance cost is low.

The invention discloses a liquid contact detection device and method based on an optical fiber, and the method comprises the steps: controlling a light emitter to emit light with a specific wavelength through a main control system, and forming a light source; light rays are transmitted to the optical fiber sensor through the optical fiber interface, are propagated in the optical fiber sensor through a path with a specific shape and then are captured through the optical fiber interface again, and the main control system controls the optical receiver to sample data to obtain optical data reflected by the optical transmitter through the optical fiber sensor; and the master control system analyzes the change of the intensity of the light data according to the collected light intensity data and judges whether the liquid is contacted or not. The scheme can be used for measuring dangerous liquid, overcomes the defect of low manual detection efficiency, and solves the problems of potential safety hazards of conductivity detection and easiness in being influenced by temperature.

The invention discloses a hazardous gas leakage monitoring system and method based on a porous rotating wheel device, and belongs to the technical field of hazardous gas leakage monitoring. The system comprises a multi-hole rotating wheel device, the multi-hole rotating wheel device comprises a disc-shaped rotating wheel, a rotating shaft is arranged in the center of the rotating wheel, a plurality of optical filter installation hole positions are evenly distributed in the rotating wheel, and the installation hole positions correspond to optical filters of different wave bands; the stepping motor is connected with a rotating shaft of the rotating wheel and used for driving the rotating wheel to rotate so as to switch the optical filters; the refrigerating device comprises a cylindrical chamber and a Stirling cryocooler, the cylindrical chamber seals the porous rotating wheel optical filter device, and the cylindrical chamber is provided with an incident window and an emergent window on the two sides of the porous rotating wheel device respectively; a refrigeration probe of the Stirling cryocooler is inserted into the closed cavity and is used for refrigerating incident infrared light; a medium wave infrared movement; and a control module. According to the invention, through switching of the plurality of optical filters, more VOCs gas leakage monitoring imaging is realized, the monitoring capability is improved, and the cost is reduced.

Systems can include an acoustic sensor array configured to receive acoustic signals, an illuminator configured to emit electromagnetic radiation, an electromagnetic imaging tool configured to receive electromagnetic radiation, a distance measuring tool, and a processor. The processor can illuminate the target scene via the illuminator, receive electromagnetic image data from the electromagnetic imaging tool representative of the illuminated scene, receive acoustic data from the acoustic sensor array, and receive distance information from the distance measuring tool. The processor can be further configured to generate acoustic image data of the scene based on the received acoustic data and received distance information and generate a display image comprising combined acoustic image data and electromagnetic image data. The processor can determine depths of various acoustic signals within a scene and generate a representation of the scene the shows the determined depths, including floorplan and volumetric representations.

A hydrocarbon gas detection system including a longwave infrared camera, a spectral filter, and a computation unit. The spectral filter is disposed in the light path of the camera sensor. The spectral filter is made of a material selected from the group consisting of calcium fluoride, zinc sulfide, magnesium fluoride, and silicon. The computation unit is arranged to process image data of the longwave infrared camera for the hydrocarbon gas detection.