468results about "Fluid-tightness measurement using light" patented technology

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.

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.

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.

A gas emission monitoring system is configured for versatile deployment across various sites, including gas extraction locations, industrial settings, and environmental monitoring areas. The system may include a support structure holding a plurality of tubings, each equipped with at least one intake port. The tubings may be interconnected through a connecting tubing that ultimately links to an analysis tubing feeding into a gas analyzer. The design ensures that the intake ports are strategically positioned at different vertical levels relative to the ground, for example, for optimized air sampling. The gas analyzer may be configured to identify multiple types of gas content in a received air mixture, which is collected from the various intake ports. Thus, the systems discussed herein may provide a comprehensive, adaptable solution for real-time gas monitoring, capable of handling a broad range of gases and environmental conditions.

Some systems include an acoustic sensor array configured to receive acoustic signals, an electromagnetic imaging tool configured to receive electromagnetic radiation, a user interface, a display, and a processor. The processor can receive electromagnetic data from the electromagnetic imaging tool and acoustic data from the acoustic sensor array. The processor can generate acoustic image data of the scene based on the received acoustic data, generate a display image comprising combined acoustic image data and electromagnetic image data, and present the display image on the display. The processor can receive an annotation input from the user interface and update the display image based on the received annotation input. The processor can be configured to determine one or more acoustic parameters associated with the received acoustic signal and determine a criticality associated with the acoustic signal. A user can annotated the display image with determined criticality information or other determined information.

A pipeline inspection system includes an unmanned aerial vehicle (UAV) operable to travel in an airspace above a pipeline configured to transport a hydrocarbon fluid. The UAV includes sensors configured to detect a leak of the hydrocarbon fluid from the pipeline. The system includes a control system configured to perform operations including operating the UAV to travel at a first altitude range in the airspace, identifying a measurement, taken at the first altitude range, from a first sensor that indicates a location of a potential leak of the hydrocarbon fluid, based on the identified measurement from the first sensor, operating the UAV to travel at a second altitude range different from the first altitude range in the airspace, identifying a measurement, taken at the second altitude range, from a second sensor that indicates the location of the potential leak, and generating a recommended action based on the identified measurements.

Presented are smart testing systems for detecting leaks in electrochemical devices, methods for making / using such testing systems, and memory-stored instructions for automating operation of such systems. A method of detecting a leak in an electrochemical device includes positioning a temperature-controlled (TC) screen with an electrothermal device at a predefined distance from an infrared camera to define therebetween a test envelope. A testing system controller commands the electrothermal device to modify the TC screen's operating temperature to a predefined screen testing temperature. After positioning an electrochemical device in the test envelope, between the TC screen and infrared camera, the infrared camera captures infrared images of the electrochemical device within the test envelope, showing the device's housing located in front of the TC screen. The system controller then analyzes the captured infrared images of the electrochemical device to determine if a gas leak is present in the device housing.

The application provides a kind of eccentric butterfly valve performance detection method and system based on optical detection, the method comprises: obtaining the first image of the light transmission intensity distribution of the sealing pair structure of bidirectional full-metal hard sealing four eccentric butterfly valve;According to the reflection interference image of structured light on the sealing pair structure collected by phase modulation structure grating light field, and combined with the first image, joint analysis is carried out to generate contact pressure distribution matrix;Based on the first image and contact pressure distribution matrix, the corresponding multi-dimensional image features are extracted to generate leakage early warning area atlas;The floating response trajectory of the sealing pair structure in the opening and closing process is compared with the leakage early warning area atlas in space, and the corresponding floating response characteristics of the leakage early warning area in the opening and closing process are determined;According to the abnormal degree of floating response characteristics, the butterfly valve sealing performance detection result is generated. Through the implementation of the application scheme, the leakage early warning area and its corresponding dynamic abnormal characteristics can be identified in advance, and the safety and operation stability of the system are improved.

An apparatus (100) for monitoring a fluid pipe (1), the apparatus comprising a cable (11) disposed within the pipe (1). The cable (11) comprises a plurality of sensing fibres (10, 502, 508, 510), wherein the plurality of sensing fibres (10, 502, 508, 510) are spliced together (504, 512, 506) at their respective ends to form a continuous looped configuration (500) within the cable (11). The apparatus further comprises a light emitter (101) for introducing light pulses into the continuous looped configuration (500), a light detector (110) for detecting backscattering of the light pulses from the continuous looped (configuration 500) and outputting a backscattering signal in response thereto as well as a processing unit (103) configured to process the backscattering signal to identify backscattering signal features characteristic of particular events within or in a vicinity of the fluid pipe (1).

The invention discloses a ground equipment oil leakage hidden danger identification method and system, and the method comprises the steps: collecting the ground surface reflected light brightness data of a ground region of target equipment through a satellite multispectral channel, recognizing a suspected oil leakage region according to the ground surface reflected light brightness data, and extracting the position coordinates and boundary range of the suspected oil leakage region; the unmanned aerial vehicle detects the organic matter concentration of the suspected oil leakage area one by one according to the inspection flight route, determines concentration distribution data, identifies an abnormal concentration standard-exceeding area according to the concentration distribution data, and generates an abnormal concentration distribution area map corresponding to the abnormal concentration standard-exceeding area; and comparing and matching the suspected oil leakage region with the concentration anomaly region map, determining a comprehensive matching degree score about the position overlapping degree and the boundary consistency, comprehensively evaluating the suspected oil leakage region and the concentration anomaly exceeding region, and determining an actual oil leakage region, thereby improving the recognition efficiency and reliability of the oil leakage hidden danger.

A leak of a cold fluid (e.g., a chilled fluid, or a fluid that is initially pressurized and becomes cold on leakage) is detected using a sequence of Infrared (IR) and Visual (VI) images. Using neural nets, in each of VI and IR image-level features are extracted from images and compared with image-level features from images of different times to obtain motion-enhanced features. The motion enhanced features from VI and IR are then compared to obtain fused features from which the leak is detected. The image-level features may be extracted using a neural net with multiple stages. The motion-enhanced and fused features may be obtained in parallel using the image-level features from the multiple stages, and the leak detection based on the stage-specific fused features.

The utility model relates to the field of detection devices, in particular to a liquid immersion type pressure pipeline air tightness detection device, which comprises a liquid immersion box, a corrugated main pipe, a lifting frame and an air tightness immersion mounting pipe, through a separation area formed by the wave impingement plate and the blocking lines, in combination with a built-in infrared sensor, bubble dynamic states are monitored in real time, subjective errors of naked eye observation are eliminated, tiny leakage is effectively recognized, the lifting frame is driven by the air cylinder to ascend and descend, the water pressure in the liquid immersion box can be accurately adjusted, and pressure impacts of different working conditions on a pipeline can be simulated. Meanwhile, the wave impingement plate and the stabilizing plate cooperate to reduce water flow fluctuation interference, the airtight soaking mounting pipe is subjected to steering adjustment and air bag floating ball self-adaptive positioning, rapid adaptation of different pipe diameters and mounting angles is supported, the operation complexity is reduced, an airtight sleeve and a branch sleeve form a multi-layer sealing structure, and the service life is prolonged. The pressurizing box is combined to control the air pump to dynamically compensate air pressure, misjudgment or equipment damage caused by sudden pressure change in the detection process is prevented, and the overall detection effect is improved.

An optical detector for detecting a coolant leak from a liquid cooling system within an information handling system includes a light source and a sensor configured to absorb light emitted from objects illuminated by the light source. A first flexible waveguide is communicatively coupled to the light source, and a second flexible waveguide is communicatively coupled to the sensor. The optical detector is configured to detect a potential coolant leak in response to the sensor absorbing light having a predetermined characteristic. The light is reflected from an object illuminated by the first flexible waveguide. The reflected light is transmitted to the sensor via the second flexible waveguide.

A leak detection system is configured to provide vehicle-specific leak detection for a vehicle. The leak detection system includes a memory circuit having a plurality of leak detection instructions matched with vehicle identification information. The system additionally includes an ultraviolet light source and a camera configured to capture an image of an area illuminated by the ultraviolet light source. A processor is in operative communication with the memory circuit and the camera. The processor is configured to facilitate identification of at least one of the plurality of leak detection instructions in response to receipt of vehicle identification information associated with the vehicle, and compare the image captured by the camera to a known image of the vehicle to determine presence and location of a leak.

The present invention provides a method for leakage testing of an electrostatic chuck. The method for leakage testing of an electrostatic chuck comprises: a mounting step of mounting the electrostatic chuck on a test stage of a testing chamber; a loading step of loading a dummy substrate in an upper surface of the electrostatic chuck; a decompression step of decompressing an interior of the testing chamber; a tracking fluid supply step of supplying a tracking fluid with visibility to a flow path of the electrostatic chuck; a photographing step of photographing the electrostatic chuck; and a determination step of determining whether a leakage occurs in the flow path by examining an image photographed in the photographing step.

The invention discloses an automatic detection system for floating roof sealing of a storage tank, and relates to the technical field of sealing detection, and is technically characterized in that the automatic detection system comprises a connecting frame mounted at the top of the storage tank, a lifting mechanism is arranged on the connecting frame, and a horizontal displacement mechanism is arranged below the lifting mechanism; a detection mechanism for detecting the sealing performance is arranged on the movable part of the horizontal displacement mechanism, and the detection mechanism is in signal connection with a wireless transmission module; the sealing detection mechanism comprises a laser distance measuring sensor, an infrared thermal imager and a gas concentration sensor, a certain detection distance is kept between the laser distance measuring sensor and the edge of the floating roof of the storage tank by adjusting the lifting mechanism, and the field angle of the infrared thermal imager covers the full width of a sealing belt of the floating roof of the storage tank; the top sealing performance can be automatically detected, and the efficiency and the reliability are improved.

This application provides a device, method, and vehicle battery pack for detecting electrolyte leakage in a vehicle battery pack, relating to the field of vehicle battery technology. The device includes a microprocessor, a leakage detection module, and an alarm module. The leakage detection module includes an electrolyte detection module, which comprises an electrolyte-sensitive membrane, an excitation light source, and a light receiving probe disposed opposite to each other. The microprocessor is electrically connected to the light receiving probe. The excitation light source emits excitation light through the electrolyte-sensitive membrane to the light receiving probe; the light receiving probe receives the excitation light passing through the electrolyte-sensitive membrane and detects the light intensity; the microprocessor determines that there is electrolyte leakage in the vehicle battery pack when the light intensity attenuation relative to a preset light intensity threshold is greater than a set attenuation threshold. Since dust and moisture do not affect the light intensity of the excitation light passing through the electrolyte-sensitive membrane, the reliability of determining electrolyte leakage in the vehicle battery pack is high.

To accurately estimate a feature quantity related to a gas concentration and accurately measure a gas concentration in a space even in a case where a background temperature changes due to a factor other than gas.A gas concentration measuring device 20 includes an inspection image acquisition unit 211 that acquires infrared image time-series data captured by an infrared camera 10, a pixel specifying unit 2121 that specifies a target pixel for gas concentration measurement and a reference pixel with a gas concentration lower than a gas concentration of the target pixel in the infrared image, a without-gas background temperature estimation unit 2122 that estimates without-gas background temperature time-series infrared data in the target pixel based on target pixel time-series infrared data and reference pixel time-series infrared data in time-series data of the infrared image, and a concentration-feature-quantity calculation unit 2123 that calculates time-series data of a feature quantity related to a gas concentration of the target pixel based on the target pixel time-series infrared data and without-gas background temperature time-series infrared data of the target pixel.

Techniques are provided for facilitating detection threshold determination for infrared imaging systems and methods. In one example, a method includes capturing, by an imaging device, a thermal image of a scene. The method further includes determining temperature difference data indicative of a difference between temperature data of the thermal image associated with a background of the scene and temperature data of the thermal image associated with gas detection. The method further includes determining detection threshold data based on sensitivity characteristics associated with the imaging device and the temperature difference data. The method further includes generating a detection threshold image based on the detection threshold data. Each pixel of the detection threshold image corresponds to a respective pixel of the thermal image and has a value indicative of a detection threshold associated with the respective pixel of the thermal image. Related devices and systems are also provided.

Systems and methods for monitoring underwater structures are provided. First and second sets of point cloud data that are obtained at different times are compared to determine whether the location of the underwater structure has changed. For detecting vibration, a series of range measurements taken along a line intersecting the underwater structure are compared to one another to determine an amplitude and frequency of any vibration present in the underwater structure. For detecting temperature, the ratio of different components of return signals obtained from a point in the water surrounding the underwater structure is measured to derive the temperature of the water. Leak detection can be performed by scanning areas around the underwater structure. Monitoring systems can include a primary receiver for range measurements, and first and second temperature channel receivers for temperature measurements.

A gas flow rate estimation device includes a map acquisition section acquiring, from position information of a camera capturing an image including information of an infrared ray, map information around the camera, a distance calculation section calculating, based on the map information, a distance from the camera to a gas cloud, a first calculation section calculating, using time-series images, a gas velocity of the gas cloud and a gas passage time for which gas passes through a gas region, a second calculation section calculating a gas concentration thickness product of the gas region by using image data of the gas region and a gas amount of the gas region by using the gas concentration thickness product and a distance calculated by the distance calculation section, and a third calculation section calculating a flow rate estimation value of gas by using the gas passage time and the gas amount.

To reduce the workload in directing a laser irradiator to an air break switch on a column.SOLUTION: An immersion inspection device comprises: a laser output unit that irradiates a bottom face of a housing of an air break switch with a laser; a photographing unit that performs photographing in a direction along the irradiation direction of the laser; a learning model storage unit that stores a learning model that, by using a plurality of images of the air break switch photographed in the past, specifies power distribution installations around the air break switch captured in the plurality of images; a specification unit that inputs data indicating an image including the air break switch newly photographed by the photographing unit to the learning model to specify the power distribution installation around the air break switch; a control unit that, based on a result of specification performed by the specification unit, controls emission of the laser performed by the laser output unit so that the power distribution installation around the air break switch is not irradiated with the laser; a temperature detection unit that detects the temperature of the bottom face when the bottom face is irradiated with the laser; and an inspection unit that inspects whether the inside of the housing of the air break switch is immersed in water based on a result of detection of the temperature of the bottom face.SELECTED DRAWING: Figure 1

To provide a liquid leakage sensor system having a high degree of freedom with respect to a place to which a liquid leakage sensor is attached and the number of liquid leakage sensors.SOLUTION: In the liquid leakage sensor system, wireless communication is possible between liquid leakage sensor master device 200 and liquid leakage sensor master device 200, and wireless communication is possible between semiconductor device 1000 including first liquid leakage sensor slave devices 100-1-n to 100-X-n installed inside semiconductor device 1000 and liquid leakage sensor master device 200. And second liquid leakage sensor slave devices 100-Y-1 to 100-Y-n installed outside the semiconductor device 1000, in which the second liquid leakage sensor slave devices 100-Y-1 to 100-Y-n are installed in the liquid supply / discharge pipes P-1 to P-n that connect the outside of the semiconductor device 1000 and the inside of the semiconductor device 1000, and the liquid leakage sensor master device 200 can set the second liquid leakage sensor slave devices 100-Y-1 to 100-Y-n to be valid or invalid via the user interface 400.SELECTED DRAWING: Figure 3

Various embodiments of optical sensors, such as optical leakage sensors, are provided. Example embodiments of optical sensors described herein may include an optical prism and / or a microcontroller configured to provide power to a plurality of wires, the optical prism includes a plurality of substantially semi-cylindrical grooves, a plurality of conductive lines disposed within the plurality of substantially semi-cylindrical grooves, wherein the plurality of conductive lines are configured to provide heat to a sensing surface of the optical prism in response to application of power.

A system for detecting methane includes a body and a shaft extending from the body. The system also includes a wind sensor coupled to the shaft. The wind sensor is configured to measure a wind direction and a wind intensity. The system also includes a pyranometer coupled to the body. The pyranometer is configured to measure ambient light. The system also includes a methane sensor positioned on or in the body. The methane sensor is configured to measure a methane concentration in ambient air.