176results about "Material analysis using sonic/ultrasonic/infrasonic waves" patented technology

Disclosed is a kind of wind powder fineness probe rod detection device, comprising: wind powder pipeline, opposite shot switch, probe rod;Probe rod is inserted into the wind powder pipeline, wind powder pipeline is opened in the vertical direction of the probe rod Two symmetrical through holes, the end of the probe rod is located on the connecting line of two symmetrical through holes, and the outside of two symmetrical through holes is provided with two corresponding opposite shot switches.Detection device can detect the wear degree of probe rod, and the insertion depth of probe rod can be adjusted according to the wear state.The structure is simple, the manufacturing cost is low, the installation and maintenance are convenient, and it is easy to operate.

The invention relates to a dynamic method for generating representative data of a part (1) to be inspected, said method comprising: - a step of acquiring data on the part (1) to be inspected by a multi-element sensor (2) comprising: - emitting an ultrasonic pulse (E), and - receiving said reflected wave (R) from the part (1) resulting from the ultrasonic pulse (E), the method further comprising a step of generating representative data of the part (1) to be inspected, characterized in that it further comprises, during the data acquisition step, a relative displacement between the sensor (2) and the part (1) to be inspected, and in that it further comprises a step of generating corrected representative data of the part (1) to be inspected by simulating a relative displacement between the sensor (2) and the element (1) to be inspected up to a reference position. Figure to be published: 3

The problem to be overcome by the present disclosure is to more accurately measure the water vapor pressure of gas mixtures even when the gas mixtures flow through a flow channel under a high-humidity environment. A physical quantity measurement system (1) includes a temperature and humidity sensor (16), a heat generator (17), a heat generation controller (203), and a water vapor pressure measurer (204). The temperature and humidity sensor (16) measures a humidity and temperature of gas mixtures flowing through a flow channel (101). The heat generator (17) performs a heat generating operation that generates heat to warm the temperature and humidity sensor (16). The heat generation controller (203) controls the heat generating operation. The water vapor pressure measurer (204) measures a water vapor pressure of water vapor included in the gas mixtures. The heat generation controller (203) controls the heat generating operation by the heat generator (17) based on a result of comparison between a humidity measured value of the gas mixtures that has been measured by the temperature and humidity sensor (16) and a threshold value. The water vapor pressure measurer (204) calculates the water vapor pressure by changing a measurement method depending on a condition satisfied based on the humidity measured value.

This application provides an ultrasonic sensor, its manufacturing method, and an ultrasonic testing device. The ultrasonic sensor includes a piezoelectric unit, a first contact electrode, a second contact electrode, a first bent wire, a first external structure, a second bent wire, a second external structure, and a flexible encapsulation. The first contact electrode is connected to a first surface of the corresponding piezoelectric unit, and the second contact electrode is connected to a second surface of the corresponding piezoelectric unit. The flexible encapsulation covers the piezoelectric unit, the first contact electrode, and the second contact electrode. The first contact electrode is electrically connected to the first external structure via the first bent wire, with at least a portion of the first external structure exposed within the flexible encapsulation. The second contact electrode is electrically connected to the second external structure via the second bent wire, with at least a portion of the second external structure exposed within the flexible encapsulation. This design allows for greater flexibility in the ultrasonic sensor, facilitating wider application scenarios.

A fluid measuring device (10) has two waveguides (22, 24) on a flow channel (12) and a first and a second signal converter element (26, 28) mounted to the waveguides (22, 24). The signal converter elements (26, 28) each comprise at least two signal converters (30, 32, 34, 36, 38, 40) for exciting surface acoustic waves in the waveguides (22, 24) that are arranged beside each other in a transverse direction (T) of the flow channel (12). To determining a flow rate through the flow channel (12) center signal data is measured with the center signal converters (30, 32) and side signal data is measured with the side signal converters (34, 36, 38, 40) of the first and second signal converter element (26, 28). From the measured center and side signal data, a correction coefficient is determined and a flow rate is determined from the measured center and side signal data and the determined correction coefficient.

A MEMS-based alcohol sensor, comprising a MEMS technology-based alcohol measurement module, an MCU processor (12), a circuit substrate (10), and a housing (30) that covers the circuit substrate (10). The alcohol measurement module outputs a concentration signal to the MCU processor (12) by means of a sampling and amplification circuit module, the MCU processor (12) processes the concentration signal and then outputs an alcohol concentration value. The MEMS technology-based alcohol measurement module and the MCU processor (12) are integrated in the housing (30), so the entire alcohol sensor is small in size, and can be applied to a mobile phone, a wearable device, etc.

Provided is a photoacoustic measuring apparatus. The apparatus comprises an ultrasonic sensor configured to detect a photoacoustic wave generated in a photoacoustic wave generating area in the measurement target in a predetermined frequency band, wherein with a light-incident position and a beam width of the laser light, a center of the photoacoustic wave generating area, and a position of the ultrasonic sensor given according to a predetermined geometry, the frequency band of the ultrasonic sensor may be configured to include a frequency corresponding to a wavelength equal to twice the beam width at the point of light incidence.

The utility model discloses a kind of ultrasonic test block depth groove measuring tools, including ruler body and digital display, the lower end of ruler body is equipped with measuring base, digital display is slidably connected in the periphery of ruler body, and the front end of digital display is equipped with zero clear button, the side of zero clear button is provided with key, the lower of measuring base is equipped with measuring needle assembly, and measuring needle assembly is screw connection with measuring base. Compared with the prior art, the depth groove measuring tool, the measuring base is erected on the platform, when encountering larger hole, rotating fastening knob two loosens extension rail, extension rail slides outward to extend and increase the distance of two supporting blocks, rotating fastening knob two fixes extension rail, the support adaptability of device is better, metric thread is completely screwed into the thread hole of digital depth gauge measuring surface, move ruler body to make measuring head end surface flush with measuring base, turn on by pressing key, clear zero by pressing zero clear button, normal measurement can be carried out.

The utility model provides a kind of SF6 / N2 mixed gas intelligent on-line monitoring device, it is related to gas monitoring technical field, including processing box, infrared spectrum sensor is fixedly installed in the inside one side of processing box, information processing module for processing information is fixedly installed in the inside one side of processing box, ultrasonic sensor is fixedly installed in the inside one side of processing box, pressure temperature sensor is fixedly installed in the inside one side of processing box, the top surface of processing box is fixedly installed with several alarm lamps, filter screen one, driving motor, cam, connecting roller, gyro wheel, gyro wheel, mounting rod, spring and filter screen one are cooperated with each other by being set, it can prevent dust from contacting multiple sensors such as pressure temperature sensor, ultrasonic sensor and infrared spectrum sensor while preventing air intake fluctuation from affecting mixed gas detection, reach the filtering effect to dust, improve the monitoring effect to SF / N mixed gas.

A UAV (1) attachable to an external target, the UAV comprising: a propulsion system (2); an arm (3) extending away from the propulsion system; and a releasable attachment element (4) connected to the arm and configured to releasably attach to the external target. The propulsion system and the attachment element are coupled via a coupling mechanism (5) interposed between the arm and the propulsion system or between the arm and the attachment element.

A viscometer for measuring viscosity of a fluid uses one or more ultrasound transducers to conduct an ultrasound-based time-of-flight measurement process in which an ultrasound pulse is transmitted into the fluid at a first time and received by a transducer at a second time. A viscometer has at least one transducer receptacle configured for being immersed in the fluid. The at least one transducer receptacle receives one or more ultrasound transducers and fluidly isolates the transducer(s) from the fluid. The viscometer enclosure is shaped and arranged so that, when the ultrasound-based time-of-flight measurement process is conducted, the ultrasound pulse travels a predefined distance through the fluid from where the ultrasound pulse is transmitted to where the ultrasound pulse is received, whereby a time of flight of the ultrasound pulse from when the ultrasound pulse is transmitted to when the ultrasound pulse is received indicates the viscosity of the fluid.

Non-destructive inspection of welded rail joints by ultrasound phase-array transducers in one device, precise positioning non-destructive inspection probes and moving the probes in longitudinal and transverse directions. Two scanners have ultrasound phase-array transducers and emission control unit for sequential or simultaneous inspection of welded joints using (i) two ultrasound phase-array transducers are directed to each other and operate separately, wherein the transducers provide a beam sector of 36-75 degrees; (ii) two ultrasound phase-array transducers are directed to each other and operate separately, wherein the transducers provide a beam sector of 26-24 degrees from the tread surface during longitudinal movement; and / or (iii) two ultrasound phase-array transducers are directed to each other, one transducer emits a transverse wave with a predetermined angle from the tread surface to the base of the rail, while the other transducer receives a longitudinal wave that occurs only when a vertical crack exists in the rail.

The present invention relates to a system and method for non-destructive testing of components, and to a hybrid delay line that achieves broadband impedance matching. [Solution] A system (100) for non-destructive testing of a component (104) includes a housing (106), an ultrasonic transducer (108) fixed within the housing (106), and one or more barriers (118) fixed within the housing (106). The one or more barriers (118) are formed of a solid material. A liquid-holding chamber (114) is provided between the ultrasonic transducer (108) and the one or more barriers (118) within the housing (106). The liquid-holding chamber (114) holds a liquid (116).

The utility model relates to the technical field of buried pipeline detection, disclose a kind of nondestructive testing equipment for buried pipeline anticorrosion detection, including equipment bin one, equipment bin one bottom is fixedly connected with equipment bin two, the right side top of equipment bin one is fixedly connected with connecting block, rotary groove is established in the right side of connecting block, rotating shaft is rotatably connected with the right side inside of connecting block, the outer periphery of rotating shaft is fixedly connected with ratchet wheel, handheld grip is abutted with the right side inside of connecting block, rotary bin is established in the right side inside of handheld grip, ratchet pawl is rotatably connected with the right side inside of handheld grip, spring is fixedly connected with the bottom of ratchet pawl front and back, the bottom of ratchet pawl is fixedly connected with pull rod, the left side of handheld grip is fixedly connected with display.The utility model is in, through the angle adjusting mechanism of ratchet wheel, ratchet pawl, spring and pull rod, effectively improve the defect that traditional equipment fixed angle handle is inconvenient to operate, improve the precision of detection and the efficiency of operation.

This application relates to the field of ultrasonic imaging technology, and provides an ultrasonic transducer and its fabrication method. The ultrasonic transducer includes a substrate layer, a piezoelectric layer, and an acoustic matching layer stacked sequentially along the thickness direction. The piezoelectric layer includes a substrate, which includes a wiring area and multiple piezoelectric elements spaced in a row-column pattern along both row and column directions. Adjacent piezoelectric elements are bonded together with an insulating adhesive. The upper and lower surfaces of the piezoelectric elements and the insulating adhesive are formed by vacuum-deposited electrode layers, creating rows and columns of strip electrodes. These strip electrodes can be formed by cutting and photolithography. The end of a first electrode layer is electrically connected to a first conductive element; the end of a second electrode layer is electrically connected to a second conductive element. The substrate layer and the acoustic matching layer can directly contact the piezoelectric layer for acoustic matching, improving the acoustic matching effect between the piezoelectric elements and the substrate layer and acoustic matching layer.

The problem to be overcome by the present disclosure is to measure a hydrogen concentration accurately. A physical quantity measurement system (1) includes a concentration measurer (205) and a flow rate measurer (206). The concentration measurer (205) measures a water vapor concentration of water vapor included in gas mixtures and a gas concentration of a gas included in the gas mixtures and different from the water vapor. The flow rate measurer (206) measures a flow rate of the gas mixtures and a flow rate of the gas included in the gas mixtures. The concentration measurer (205) calculates the water vapor concentration using a pressure of the gas mixtures, and a humidity measured value and a temperature measured value of the water vapor that have been measured by a temperature and humidity sensor (16). The concentration measurer (205) calculates the gas concentration using the water vapor concentration, a propagation time of an ultrasonic wave, and a temperature of the gas mixtures that has been measured by a temperature sensor (such as temperature sensors 13, 14). The flow rate measurer (206) calculates the flow rate of the gas mixtures using the pressure of the gas mixtures, the water vapor concentration, the gas concentration, and a flow coefficient. The flow coefficient is a value based on a kinematic viscosity of the gas mixtures.

An ultrasonic transducer comprising: a transducer chamber (WK) with an end-face coupling element (KE) made of a first material (M1); a piezoelectric element (PE) made of a second material (M2) for generating ultrasonic waves, having a surface (O) having a normal vector (NO) and an area (FO); wherein the coupling element (KE) has connecting elements (VE) on one side (SW), the connecting elements (VE) each having a contact surface (KF), being elastically deformable in a plane perpendicular to the normal vector (NO), and being materially bonded to the piezoelectric element (PE) by means of the contact surface (KF); wherein the sum of the areas (S) of the contact surfaces (KF) is between 30% and 9% of a surface of the piezoelectric element (PE); wherein the connecting elements (VE) have a characteristic height (CH) and a characteristic radius (CR);where the ratio of the characteristic height (CH) to the characteristic radius (CR) is not less than 1; where the ratio of the characteristic height (CH) to the characteristic radius (CR) is not more than 4.

The application belongs to the technical field of ultrasonic scanning, and particularly relates to a high-frequency ultrasonic probe and a preparation method thereof. The method comprises the following steps: S1, obtaining a conductor column and a piezoelectric film plated with electrodes on two surfaces after polarization; S2, processing a first end of the conductor column into a spherical arc surface and a first anti-reflection surface, and processing a second end of the conductor column into a second anti-reflection surface to form a backing; S3, coaxially fixing a first surface of the piezoelectric film to the spherical arc surface and the first anti-reflection surface; S4, sleeving an insulating inner shell around the backing, wrapping a shielding net around an outer side of the inner shell, bonding the shielding net to a second surface of the piezoelectric film through conductive glue, connecting a ground wire to the second anti-reflection surface, and connecting a signal wire to the shielding net to form a transducer; and S5, packaging the transducer into a metal shell as a whole, grounding the metal shell through a standard interface, and obtaining the high-frequency ultrasonic probe by plating a waterproof layer on the metal shell and the second surface of the piezoelectric film after packaging, which can be used for ultrasonic nondestructive testing.

This application provides an ultrasonic gas meter, which includes a transmitting transducer, a receiving transducer, and a processing module. The processing module calculates the propagation speed of the ultrasonic signal and generates an echo signal based on the ultrasonic signal received by the receiving transducer. The ultrasonic gas meter also includes an environmental information detection module for acquiring environmental information about the environment in which the ultrasonic gas meter is located; a gain self-adjustment module for amplifying the echo signal to a preset voltage range and calculating the signal gain; the processing module stores the trend of ultrasonic propagation speed changing with environmental information under certain conditions; the processing module determines whether the change in ultrasonic propagation speed conforms to the trend based on the changes in ultrasonic propagation speed and environmental information over a period of time; if so, the processing module determines whether the gas quality in the pipeline has changed based on the change in signal gain over the time period. The ultrasonic gas meter provided by this application provides more accurate judgment of gas quality changes.

The utility model relates to the field of weld detection discloses a kind of self-adapting pipe diameter scanning frame based on phased array ultrasonic detection, including probe fixed unit and chain unit, the first and last end of chain unit is respectively connected with the two ends of probe fixed unit to form annular structure, and chain unit is formed by a plurality of chain link assemblies being connected in series;Chain link assembly includes small shaft, sliding sleeve, gyro wheel, spring, connecting rod, first connecting piece and second connecting piece, spring and two sliding sleeves are sleeved on small shaft, and spring is located between two sliding sleeves, two gyro wheels are installed in the two ends of small shaft, the hinged ear of two sliding sleeves sides is respectively hinged to the one end of four connecting rods, and the two connecting rods of sliding sleeve same side are respectively hinged with first connecting piece and second connecting piece;The first connecting piece and the second connecting piece of adjacent two chain link assemblies are rotatably connected by pin shaft.The chain link assembly designed in the utility model has telescopic property, can be self-adapting pipe diameter of steel pipe, improve the applicability of product, and it is more convenient to use.

The utility model relates to a kind of fixing device for fixing cylindrical waveguide rod and acoustic emission sensor, the fixing device includes fixed bottom plate, fixed screw is provided on fixed bottom plate to connect on measured object, C-shaped clamping plate is fixedly arranged on fixed bottom plate, and the inner cavity of C-shaped clamping plate is for waveguide rod to be loaded into. Acoustic emission sensor is provided at the opening of C-shaped clamping plate, and acoustic emission sensor is contacted with waveguide rod to receive acoustic wave signal, and the two ends of the opening of C-shaped clamping plate are used to clamp acoustic emission sensor. C-shaped clamping plate is provided with clamp, so that C-shaped clamping plate is deformed to fix waveguide rod and acoustic emission sensor. By tightening clamp, so that C-shaped clamping plate locks cylindrical waveguide rod while its opening two ends clamps acoustic emission sensor, when disassembling, only need to loosen clamp to disassemble cylindrical waveguide rod and acoustic emission sensor, disassembly is very convenient, and waveguide rod and acoustic emission sensor are fixed more firmly.

Method of placing a control probe on an element to be controlled using at least one calibrated wedge and equipment enabling the implementation of said method. The invention relates to a method of placing a control probe (34) on an element to be controlled (40), the method comprising a step of applying an adhesive (42.1) to couple the control probe (34) and the element to be controlled (40), a step of positioning the control probe (34) relative to the element to be controlled (40) and a step of polymerizing the adhesive (42.1). To obtain an optimal glue thickness (42.1) at the end of the polymerization step, at least one calibrated shim (46) is interposed between the control probe (34) and the element to be controlled (40), each calibrated shim (46) having a thickness substantially equal to an optimal value of the glue thickness (42.1), ensuring optimal coupling between the control probe (34) and the element to be controlled (40).The invention also relates to equipment for implementing said process. Figure 5.

A method for controlling a probe unit (2) of an ultrasonic inspection apparatus, comprising: a step (S1) for moving the probe unit (2) below a subject (E) such that a distance between a lower surface of the subject (E) and an upper surface of the probe unit (2) becomes a predetermined distance; a step (S2) for starting supply of water to a space (10) formed between the lower surface of the subject (E) and an upper surface of a probe nozzle; and a step (S3) for forming a water layer (W1) in the space (10) by temporarily changing at least one of a height of the probe unit (2) with respect to the subject (E) and an amount of water supplied to the space (10) from the height of the probe unit and the amount of water used when matching a focal point (P) of a probe (21) with an inspection target part (E1) of the subject (E) in a state in which the water layer (W1) is formed in the space (10).

A respiratory assistance apparatus configured to provide a heated and humidified gases stream, comprising: a gases inlet configured to receive a supply of gases; a blower unit configured to generate a pressurised gases stream from the supply of gases; a humidification unit configured to heat and humidify the pressurised gases stream; a gases outlet for the heated and humidified gases stream; a flow path for the gases stream through the respiratory device from the gases inlet through the blower unit and humidification unit to the gases outlet; a sensor assembly provided in the flow path before the humidification unit, the sensor assembly comprising an ultrasound gas composition sensor system for sensing one or more gas concentrations within the gases stream.

This invention relates to the field of building construction technology, and more particularly to a non-destructive testing device for the construction quality of steel-concrete composite pipes based on ultrasound. The device includes a fixed frame, a self-propelled mechanism, a movable component, transducers, elastic covers, and collectors. The fixed frame is equipped with a self-propelled mechanism for moving the frame. The movable component is also mounted on the fixed frame. Several transducers for emitting and receiving ultrasound waves are connected to the movable component. Each transducer has an elastic cover on its detection surface for uniformly dispersing the coupling agent. Several collectors for cleaning the coupling agent adhering to the transducers are connected to the movable component. All collectors are combined into a ring shape. This invention achieves the removal of concrete blocks adhering to the outside of the steel-concrete composite pipe through a scraping part on a scraper, preventing the adhering concrete blocks from obstructing the adhesion between the transducer and the outside of the steel-concrete composite pipe, thus avoiding affecting the accuracy of subsequent testing.