1217results 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.

Systems and methods are described for calculating an emission rate of a fugitive gas based on a gas density image of the fugitive gas. In an example, a computing device receives a gas density image of a fugitive gas from a camera. The computing device determines how to optimize the fugitive gas in the camera's field of view and instructions the camera to adjust its bearing and zoom accordingly. The camera captures one or more additional images of the fugitive gas, and the computing device stitches the images together where appropriate. The computing device then calculates the emission rate by delineating the fugitive gas in the image and determining a flux of the gas using one of various calculation methods.

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.

A multi-layer seal formed with a first layer for visual detection of leak by incorporating coloring agent that is water soluble, a second layer for electrical detection of a leak by a sensor, the second layer incorporating disbursable agent which disburses into the water upon contacting water and causing a change in chemical, and / or electrical property of the water, and a third layer made of water swelling material which swells upon contact with water. The three layers may be arranged in an orientation wherein a leak would first reach the first layer, then reach the second layer, and lastly reach the swelling layer. The sealing layer arrangement may be correlated to the fluid flowing direction. The layers may form independent parts placed side-by-side or may be integrated into a single seal loop.

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 relates to a pressure-sensitive material and an insulating gas leakage identification method based on the pressure-sensitive material, and the visual identification method comprises the following steps: a pressure-sensitive material is applied to the surface of inflation equipment using insulating gas (sulfur hexafluoride or a sulfur hexafluoride mixture), and the pressure-sensitive material has set toughness and ductility and changes color after deformation; when the pressure sensitive material bulges from the surface of the inflation equipment and changes color, leakage of the insulating gas is visually found, and treatment is carried out immediately. The pressure-sensitive material comprises the following components: an adhesive material, a foaming material, a piezochromic material and a forming agent, the mass ratio of the adhesive material is 70%-80%; the mass ratio of the pressure color-changing material is 8-12%; the foaming material is not less than 5% of the total mass. The leakage point can be found timely and visually, sulfur hexafluoride can be prevented from leaking into the atmosphere, and the situation that greenhouse effect gas sulfur hexafluoride is discharged into the atmosphere to cause harm to the environment is avoided.

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 deep-sea photoelectric separator with a liquid leakage identification function and an assembly process thereof, and the separator comprises a photoelectric separator cylinder, a sealing injection molding part, a submarine cable penetration part, a first end cover, a second end cover, a sensor, an optical connector, an electric connector, an electric connection box, and a fiber coiling box. The sensor, the electric connection box and the fiber coiling box are respectively arranged in the photoelectric separator cylinder, an insulating layer at one end of the submarine cable extends into the photoelectric separator cylinder through the submarine cable cabin-penetrating piece, and the sealing injection molding piece wraps the outer wall of the submarine cable cabin-penetrating piece and the insulating layer of a section of submarine cable in front of the outer end of the submarine cable cabin-penetrating piece, so that the sealing effect is improved; the submarine cable is divided into an electric wire part and an optical fiber part at one end in the photoelectric separator barrel, the electric wire part is connected with a tail cable of the electric connector in the electric connection box, the optical fiber part is connected with a tail cable of the optical connector in the fiber coiling box, the sensor is connected to one optical fiber in series, optical power detection is carried out through the sensor, and liquid leakage identification and alarm are achieved.

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 relates to a quality control system with automated sampling for laser-based quality control (32) of an atmosphere enclosed in packaging (V, T) produced by a packaging machine (1, 1'). Furthermore, the invention relates to a method for automated sampling of packaging (V, T) produced by a packaging machine (1, 1') for the purpose of laser-based quality control (32) of an atmosphere enclosed in the packaging (V, T).

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 present invention relates to a method for determining the concentration of a chemical compound of a fluid by means of an optical measurement system for measuring a light intensity spectrum, such that: (i) by means of a learning base comprising a plurality of learning light intensity spectra measured for a plurality of learning fluids each having a predetermined concentration, a model is constructed in order to determine the concentration of at least one chemical compound in a fluid by training a one-dimensional convolutional neural network on the learning base, the network being such that the number of convolutional filters per layer decreases with the position of the layer in the network; (ii): by means of the optical measurement system, at least one light intensity spectrum of the fluid is measured; (iii) the constructed model is applied to the measured light intensity spectrum, and the concentration of the chemical compound in the fluid is determined.

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 present invention relates to a seal inspection device for inspecting seals of a container. Specifically, according to an embodiment of the present invention, provided is the seal inspection device for inspecting the sealing of a container, comprising: an irradiation unit for irradiating light along an optical path extending in a first direction; a sensor unit for detecting the light traveling along the optical path; and a pressing module for pressing the sealing of the container, wherein the pressing module includes a plurality of pressing units arranged on the optical path, and the pressing unit can be selectively located at a first position for blocking the light from reaching the sensor unit and a second position for allowing the light to reach the sensor unit.

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 valve seat inspection method and valve seat inspection device using an image recognition camera. An inspection device main body has a checkup circuit for checking a leak with a reference leak amount, an inspection circuit in a state in which a test valve is set, and an image recognition camera for taking an image of bubbles appearing from a tip of an inspection tube being inserted into water in a container. The inspection device main body goes through a checkup process of switching a circuit switching part and making a pass / fail determination by the image recognition camera as to whether bubbles appear from the tip of the inspection tube in a checkup time and an inspection process of switching the circuit switching part and making a pass / fail determination by the image recognition camera as to whether bubbles appear from the tip of the inspection tube in an inspection time.

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.

A gas leak detection device and a detecting method are provided. The gas leak detection device includes a remote temperature sensor and a processor. The remote temperature sensors detect an area-to-be-monitored to obtain a plurality of thermal images. Each pixel position in the thermal images includes a corresponding temperature value. The processor obtains the thermal images from the remote temperature sensor, calculates a detected temperature value of each environmental block according to each of a plurality of environmental blocks in the thermal images, calculates a temperature judgment threshold based on the detected temperature value of each environmental block in a detection time period, determines whether a temperature of at least one region-of-interest is abnormal based on the temperature judgment threshold, and performs a warning operation when the temperature of the at least one region-of-interest is abnormal.

An autonomous robotic vehicle is capable of detecting, identifying, and locating the source of gas leaks such as methane. Because of the number of operating components within the vehicle, it may also be considered a robotic system. The robotic vehicle can be remotely operated or can move autonomously within a jobsite. The vehicle selectively deploys a source detection device that precisely locates the source of a leak. The vehicle relays data to stakeholders and remains powered that enables operation of the vehicle over an extended period. Monitoring and control of the vehicle is enabled through a software interface viewable to a user on a mobile communications device or personal computer.

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.

Systems and methods are described for an automatic and adaptive scanning method to efficiently scan for gas plumes using an imaging or LiDAR based gas monitoring system. The method comprises receiving 212, from an imaging device, a gas density image, detecting 214 the emission of the gas in the gas density image, determining 216 an emission rate, an emission location, or both, of the gas based on the gas density image, associating the emission of the gas with equipment 222; and causing a user interface to be displayed on a display device. The user interface comprises one or more indications of the emission rate, the emission location, or both, of the gas. In another example, systems and methods for detecting the presence of a plume of gas includes using supervised machine learning to train a model to recognize which images contain plumes of gas and estimate corresponding rates of gas leakage based on the images.

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.