Abstract: Distributed sensing systems and methods with spatial location correlation of a reflection produced along an electromagnetic (EM) waveguide. A distributed sensing system comprises an EM waveguide, a distributed sensing interrogator, and a processor. The distributed sensing interrogator comprises a transmitter coupled to the EM waveguide and generates an interrogation pulse through the EM waveguide. The distributed sensing interrogator also comprises a receiver coupled to the EM waveguide and responsive to backscattered EM waves propagating through the EM waveguide. The processor determines a spatial location associated with a reflection produced along the EM waveguide using a return signal generated from the reflection by the interrogator and an interrogation signal including the interrogation pulse.

Abstract: A breath alcohol device calibration system includes a computerized calibration module operable to calibrate a breath alcohol device, and an interface operable to couple the breath alcohol device to a remote server. The interface uses a connection employing a cryptographic function such that data stored on the breath alcohol device can be securely transferred from the breath alcohol device to the remote server using the calibration system. The interface is further operable to transfer data stored on the breath alcohol device from the breath alcohol device to the remote server directly without storing the data in nonvolatile storage on the calibration station.

Abstract: A triboelectric sensor comprises a substrate; at least one grid structure disposed in or on the substrate; and at least one electrode for collecting triboelectric charges that are generated by sliding of an object over a surface of the substrate; wherein the at least one grid structure is configured such that motion of the object is detectable from a signal generated by crossing of the object over at least part of the grid structure.

Abstract: According to an embodiment, a diagnostic apparatus includes a sound-emitting unit, at least one measurement unit, and a processor. The sound-emitting unit includes a plurality of speakers arranged at equal angular intervals on a circumference of a circle, and is configured to emit a first vibration sound to a target by using the speakers. The at least one measurement unit is arranged on a central axis of the circle, and is configured to measure a vibration of the target generated in response to the first vibration sound, or a second vibration sound radiated from the target due to the vibration. The processor is configured to diagnose the target based on an output from the at least one measurement unit.

Abstract: According to various, but not necessarily all, embodiments there is provided an apparatus comprising means for: controlling one or more electroacoustic transducers of a device to create a standing wave having a displacement antinode at an expected location of a component of the device; receiving a signal representing sound generated by vibration of the component driven by the standing wave; causing analysis of the signal to determine whether there is a defect based on whether the signal represents a sound that would be expected to result from vibration of the component driven by the standing wave in the absence of a defect.

Abstract: An apparatus for providing a sensor signal (SS) for evaluating a vehicle braking system, including: a first signal-path (SP) for outputting the SS to a first output-interface (OI) to a first converter-device (CD), the first SP having first electronic-components (EC), and is electrically connectable to an input-interface (II) to a vehicle sensor (VS); a first test-device (TD) for applying a first test-signal (TS) to the SS in the first SP, the first TD being electrically connectable to the first SP; a second SP for outputting the SS to a second OI to a second CD, the second SP having second EC, and is electrically connectable to the II to the VS; and a second TD for applying a second TS to the SS in the second SP, the second TD being electrically connectable to the second SP. Also described are a method, control unit, braking system, and computer readable medium.

Abstract: The present disclosure is related to techniques for the inspection of joints and repairs in pipelines. In this scenario, the a method is provided for the inspection of joints in composite pipes and of composite repairs in metallic pipelines, comprising the steps of (i) emitting a series of acoustic wave pulses, at different frequencies, from a collar of acoustic transducers positioned at a predetermined distance from a joint or repair to be inspected, (ii) recording, in a time interval subsequent to the emission, echoes of wave displacements to the repair or joint in each of the transducers in the form of an A-Scan, and (iii) generating a flattened C-Scan image, through a CSM, for each frequency of pulse emission from the collar of acoustic transducers. The disclosure further provides a system for inspection of joints in composite pipes and of composite repairs in metallic pipelines associated with the provided method.

Abstract: Disclosed herein is an apparatus for ultrasonic inspection. The apparatus comprises, in certain examples, a base, a lower coupler block slidably coupled to the base such that the base is translationally movable relative to the lower coupler block, and a pair of wings rotatably coupled to the lower coupler block at a wing pivot point and pivotable between a first angle and a second angle. In certain examples, the apparatus also includes a sensor carriage located within the base and slidably coupled to the base such that the sensor carriage is translationally movable relative to the base.

Abstract: An apparatus for scanning a cylindrical part is provided. The apparatus includes an ultrasonic transducer operable to emit ultrasonic waves into and receive ultrasonic waves from the part, with the ultrasonic transducer connected to a translation stage to move it up and down the part and around the circumference of the part. The apparatus does not mechanically contact the cylindrical or maintains contact only with soft elements, such that the apparatus does not damage sensitive parts. The apparatus also contains no magnetic parts, nor any elements that rely on magnetic detection, such that the apparatus is capable of being used in the vicinity of a part exhibiting a strong magnetic field.

Abstract: The present invention refers to a device for detecting the pressure of compressed gas cylinders in breathing apparatuses for scuba diving which can be powered by means of a battery, provided with a pressure sensor. The device allows the housing of sensors with sufficiently large dimensions, guaranteeing precise gas cylinder pressure readings. Furthermore, the elements that guarantee the watertight seal of the device can be replaced in a practical effective manner.

Abstract: A sensor (100) mounting apparatus is provided, including a housing (10), a guiding component (20) provided on the housing (10), a first cleaning member (30) slidably arranged on the guiding component (20), and a first driving element (40). The housing (10) has an accommodating cavity (11), the first driving element (40) is configured to drive the first cleaning member (30) to slide along the guiding component (20), and the first cleaning member (30) includes a second driving element (31) and a cleaning element (32) in transmission connection with the second driving element (31). The second driving element (31) is configured to drive the cleaning element (32) to swing back and forth around a direction perpendicular to a light-transmitting surface (12).

Abstract: An apparatus for measuring isometric muscle strength and dynamic strength when a limb is fixed, wherein the apparatus comprises: an attachment assembly for releasably attaching the apparatus to a support frame of an item of exercise equipment; a strain gauge configured to measure compressive or tensional forces; and a connection assembly for releasably connecting the strain gauge to a moveable component (e.g. barbell) of the exercise equipment wherein when connected makes the component immoveable such that forces exerted on the formerly moveable component require isometric muscle contraction or dynamic contraction while the limb is fixed that can be measured by the strain gauge.

Abstract: A fluid impermeable transducer includes an assembly of a transducer head and a casing, and an actuator disposed in the casing rearward of the back of the transducer head and operable to transmit acoustic energy through the transducer head. The transducer head and casing define a working portion of the transducer that is fluid impermeable.

Abstract: A spray rig monitoring system having a plurality of sensors that detect and transmit operational parameters to a computer. The operational parameters are processed to determine if a spray rig and its crew are operating within preset parameters.

Abstract: Methods and devices to mitigate time varying impairments in sensors are described. The application of such methods and devices to pressure sensors facing time varying parasitic capacitances due to water droplets is detailed. Benefits of auto-zeroing technique as adopted in disclosed devices is also described.

Abstract: An electronic liquid level gauge assembly includes an electronic display located in a housing connected to a tank. The display has first and second display portions for indicating liquid level condition. A first electronic sensor senses a change in magnetic field of a magnet associated with a liquid level transducer, with magnet rotation being proportional liquid level change. A processor determines a temperature-compensated liquid level condition by correlating the liquid level signal with temperature measurement of the liquid. A temperature-compensated vapor space can also be calculated based on tank information and properties of the liquid. Signals related to the temperature-compensated liquid level and vapor space are sent to the display and wirelessly transmitted to a smart phone or the like for remotely viewing the tank information. The smart phone also includes a special app for sending information, firmware updates, and display configuration data to the electronic gauge assembly.

Abstract: A fluid measuring device for determining at least one characteristic property of a fluid includes a measuring tube having a fluid duct and a measuring section in which an area of a measuring tube wall is configured as a waveguide for surface acoustic waves which forms an interface to the fluid. At least two piezoelectric transducers are arranged in direct contact with an outer surface of the waveguide and one of which serves as a transmitter for exciting acoustic waves and at least one as a receiver for receiving acoustic waves. Acoustic waves excited by the transmitter can propagate as a volume wave through the fluid, and the piezoelectric transducers are configured to be elastically flexible while retaining their function in that the piezoelectric transducers have strip-shaped piezoelectric elements arranged parallel to each other, are rigid per se and between which a respective layer of an elastic material is arranged.

Abstract: A device and a method for ultrasonic detecting a mechanical member based on magnetic fluid coupling. The device comprises a magnetic field generating apparatus, magnetic fluid and an ultrasonic probe. The magnetic field generating apparatus has a cylindrical structure, into which the magnetic fluid is injected, where an upper portion of the apparatus is provided with the ultrasonic probe a front end that vertically extends into a liquid level of the magnetic fluid, and a bottom portion of the apparatus covers a detected position of a member under detection. The magnetic fluid at least contains magnetic suspension particles and oil-based or water-based liquid. With the device and the method, the ultrasonic probe is coupled with the member under detection to realize ultrasonic detecting of the service stress of the member under detection.

Abstract: An apparatus for scanning a cylindrical part is provided. The apparatus includes an ultrasonic transducer operable to emit ultrasonic waves into and receive ultrasonic waves from the part, with the ultrasonic transducer connected to a translation stage to move it up and down the part and around the circumference of the part. The apparatus does not mechanically contact the cylindrical or maintains contact only with soft elements, such that the apparatus does not damage sensitive parts. The apparatus also contains no magnetic parts, nor any elements that rely on magnetic detection, such that the apparatus is capable of being used in the vicinity of a part exhibiting a strong magnetic field.

Abstract: An acoustic apparatus and method of determining the composition of a floor, based on the filtered sound waves produced by vibrating the floor is disclosed. The apparatus includes a transducer for generating vibrations and/or sound, as well as microphones for detecting sounds. The apparatus may include two microphones so that ambient noise can be removed from an audio signal.