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7387026 |
Peripheral ultrasonic sensing array system and method
An improved system and method for detecting leaks in substantially enclosed objects such as automobiles, airplanes, tanks, etc. uses an ultrasonic transmitter and an array of ultrasonic sensors...
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7331215 |
Deployment of equipment into fluid containers and conduits
Apparatus for deploying equipment in a fluid container or fluid conduit comprises a fluid housing having an outlet aperture, the fluid housing being adapted to be secured to the container or...
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7318335 |
Ultrasonic gas leak detector including a detector testing device
An ultrasonic gas leak detector of the kind where a detector transducer senses airborne acoustic ultrasonic sound waves emitted from a leakage in a gas installation is provided. The detector is...
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7283425 |
Apparatus for measuring flow noise of water over a hydrophone
A water flow noise measuring apparatus comprising: a frame; a beam comprising a distal and a proximal end, where the proximal end is pivotably coupled to the frame; a hydrophone capable of...
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7266992 |
Remote pipeline acoustic inspection
A pipe inspection apparatus comprising an acoustic source ( 3 ) for location at a first position in a pipe or pipe network, one or more acoustic or pressure detectors ( 4 ) for location at one or...
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7243549 |
Acoustic wave lubricity sensor
A lubricity sensor includes a flexural plate wave device and a face shear mode bulk acoustic wave device, which is associated with and located proximate to the flexural plate wave device. The face...
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7240574 |
Sensors carrier for in-tube inspection scraper
A sensor carrier for an in-tube inspection scraper has setting places for installation of monitoring sensors responsive to any diagnostic parameters of a pipeline being inspected. The carrier...
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7107839 |
System and method for the detection of ballistic impacts and/or penetration of a pressure vessel
A system and method for determining whether leaks exist in a pressure vessel comprises measuring a mechanical response of the pressure vessel using any of an acoustic sensor and a vibration sensor;...
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7075653 |
Method and apparatus for laser-based remote methane leak detection
A method and apparatus for remote laser-based detection of gas at levels exceeding natural background levels preferably utilizing wavelength modulated tunable diode laser absorption spectroscopy....
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7051577 |
Multi-functional leak detection instrument along with sensor mounting assembly and methodology utilizing the same
A leak detection instrument may comprise a housing, a gas sensor supported relative to the housing, an AE sensor for generating a sound detection input signal upon exposure to gas leakage,...
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7007545 |
Method and measurement probe for the performance of measurements in water supply systems
Measuring elements for the output of measured quantities in respect of the flow, namely the flow quantity and direction, the water pressure and the flow noise are integrated in a measurement probe...
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6999881 |
Method and apparatus for detecting and locating noise sources whether correlated or not
A method of detecting and locating noise sources each emitting respective signals S j with j=1 to M, detection being provided by a sound wave or vibration sensors each delivering a respective...
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6983642 |
System and method for automatically judging the sealing effectiveness of a sealed compartment
An improved and non-destructive test method and system utilizes ultrasound wave energy to automatically judge the sealing effectiveness of a sealed compartment such as the cabin of a motor vehicle...
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6976503 |
Diagnostic system and method for a valve
A diagnostic system, for a valve ( 2 ), having a sensor ( 12 ) that senses structure-borne noise and having a device ( 14 ) for evaluating a measurement signal ( 13 ) of the structure-borne noise....
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6970808 |
Realtime computer assisted leak detection/location reporting and inventory loss monitoring system of pipeline network systems
There is provided a method for detecting and locating leaks in a pipeline network in real-time. A flow model is provided that characterizes flow behavior for at least one of steady and unsteady...
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6964694 |
Diesel particulate filter monitoring using acoustic sensing
A particulate filter system is provided including an exhaust system transporting emissions from an engine. A filter such as a diesel particulate filter is disposed in the exhaust system. An...
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6957157 |
Tracking vibrations in a pipeline network
Tracking vibrations on a pipeline network includes installing multiple vibration recorders on the pipeline network, with each recorder including a sensor, a timer, a processor, and a digital...
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6920793 |
Systems and apparatus for airborne ultrasonic testing of package and container seals
Systems and devices for testing or inspecting the integrity of package closure seals using contact and non-contact ultrasonic systems wherein a relative movement is created between a package seal...
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6840108 |
Method and apparatus for airborne ultrasonic testing of package and container seals
A method for testing or inspecting the integrity of package closure seals using contact and non-contact ultrasonic systems wherein a relative movement is created between a package seal and at least...
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6804992 |
System and method for processing ultrasonic signals
A system and method for eliminating confusion associated with checking valves, wherein additional test points are added to the measurement of a valve for ensuring the verification of the actual...
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6789411 |
Detecting leaks in pipes
An apparatus for permanently or semi-permanently fitting to an underground water pipe 15,16 for detecting leaks therein, comprises a hydrophone 26 mounted to acoustically monitor water flowing...
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6725705 |
Enhanced acoustic detection of gas leaks in underground gas pipelines
A method for locating gas leaks from underground gas pipelines in which a first acoustic sensor having a first signal output is positioned in ground disposed substantially above or at a distance...
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6707762 |
System and method for heterodyning an ultrasonic signal
A method and apparatus for detecting leaks and mechanical faults by way of an ultrasonic device. An output from a variable gain amplifier is supplied to a pair of heterodyning circuits, i.e., a...
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6684702 |
Method of detection of flow duct obstruction
A method for detecting an obstruction in a flow duct is provided. The method includes the steps of directing gas through at least one port of the flow duct, measuring a flow noise level of the gas...
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6668619 |
Pattern matching for real time leak detection and location in pipelines
A method and apparatus is provided for detecting and locating leaks in a pipeline. Pattern match filtering is used to reduce false alarm rate, increase sensitivity and improve leak location...
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6666070 |
Method for testing the integrity of DPFs
A method for inspecting the integrity of diesel exhaust filter by introducing air under pressure through one end of the structure and detecting the presence of air flow at an opposing end surface....
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6595038 |
Apparatus for determining the position of a signal from a pipe
An apparatus for determining the position of a signal from a pipe, the apparatus comprising a first sensor capable of being coupled to the pipe for detecting a signal from the pipe, a second sensor...
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6567006 |
Monitoring vibrations in a pipeline network
The invention relates to acoustic detection of leaks in a pipeline using locally-intelligent, data-adaptive monitors deployed for a period of time. Monitors are initialized by a base station....
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6530263 |
Method and system for localizing and correlating leaks in fluid conveying conduits
A system for localizing and correlating leaks in a pipeline includes a plurality of loggers for detecting and storing sound data, an interface unit removably connected to the plurality of loggers...
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6453247 |
PC multimedia-based leak detection system for water transmission and distribution pipes
This invention pertains to the detection of leaks in plastic water distribution pipes by processing the sound or vibration induced in the pipe by water escaping under pressure. Acoustic leak...
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6442999 |
Leak locator for pipe systems
A system and method for determining a time of occurrence of a pressure wave in a pipe provides a first sonic transducer and a second sonic transducer at each of a plurality of site locations along...
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6430988 |
Ultrasonic leakage inspection device of non-pressure type
Leakage inspection of items, such as vessels and pipings, is performed using an ultrasonic wave under no pressure with a device of simple structure. The ultrasonic leakage inspection device...
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6404343 |
Water leakage monitoring apparatus
A water leakage detecting apparatus is capable of detecting water leakage of a water pipe precisely and at low cost. The water leakage monitoring apparatus includes vibration/electric converter for...
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6389881 |
Method and apparatus for pattern match filtering for real time acoustic pipeline leak detection and location
A method and apparatus is provided for detecting and locating leaks in a pipeline. Pattern match filtering is used to reduce false alarm rate, increase sensitivity and improve leak location...
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6370943 |
Process for monitoring the integrity of hollow fiber filtration modules
A process is disclosed for monitoring the integrity of hollow fiber filtration modules and for detecting leaks of treated liquid through a fiber completely or partially broken. It operates...
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6327896 |
Photo-acoustic leak detection system
The present invention is a photo-acoustic leak detection system that detects whether gas is leaking from a component. The system includes multiple beams wherein one beam is not absorbed by the gas...
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6289723 |
Detecting seal leaks in installed valves
An apparatus is disclosed for detecting a leak in a valve and the magnitude of the leak. The valve has an upstream seal, a downstream seal and an inner cavity isolated by the seals. The apparatus...
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6247353 |
Digital ultrasonic monitoring system and method
A portable digital ultrasonic monitoring system and method for use by an operator in detecting the ultrasonic waves and temperature variations produced by sources such as leaks in pipes, arcing,...
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6244100 |
Temperature compensation for automated leak detection
An apparatus for detecting a leak in an isolated segment of a pipe with a known fluid: The apparatus includes a mechanism for producing a pressure pulse in the pipe. The producing mechanism is...
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6227036 |
Multiple microphone photoacoustic leak detection and localization system and method
A method and system for multiple microphone photoacoustic leak detection and localization. The leak detection technique uses photoacoustic sounds produced by the interaction of a carbon dioxide...
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6220098 |
Multiple sensor ultrasonic monitoring device
An ultrasonic monitoring apparatus is provided for use by an operator in detecting ultrasonic vibrations and sound waves. The ultrasonic monitoring apparatus consists of a hand held device with a...
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6216539 |
Equipment setup for ultrasonic monitoring
An apparatus and method determines ultrasonic measurement parameters of ultrasonic measurements to be performed on a mechanical system, where the ultrasonic measurements are performed using a...
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6212942 |
Leakage inspection method and apparatus
A leakage inspection method and apparatus having a pressure wave generating means, including an air supply source, a regulator, and a solenoid valve. A pressure wave of a fluid is applied to a...
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6138512 |
Method and apparatus for determining source location of energy carried in the form of propagating waves through a conducting medium
A method and apparatus for determining source location for acoustic or other waveform energy in a conducting medium. The method includes simultaneously detecting and transducing the source energy...
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6134949 |
Method and apparatus for on-line detection of leaky emergency shut down or other valves
A method and apparatus for on-line detection of leaky emergency shutdown or other valves in a fluid transport system having an upstream pipe, a downstream pipe and the valve connected between the...
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6089076 |
System to control the power of a beam
The present invention is a system for controlling the power level of a beam exiting an acousto-optic cell and/or a beam delivery device. A beam detector senses the power level of the beam and...
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6044692 |
Ultrasonic method of testing a plate heat exchanger for leakage
A vessel such as a dairy pasteuriser having a path B for product and a separate path A for coolant in intimate relationship is tested for leaks by circulating a donor fluid under pressure in path A...
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5987990 |
System of autonomous sensors for pipeline inspection
A flaw detection system for a prestressed concrete cylinder pipe uses hydrophones inserted into valves in the pipe while the pipe is in use. The hydrophones listen for sounds that are consistent...
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5979239 |
Ultrasonic imaging system
An imaging system is described which can be used to either passively search for sources of ultrasonics or as an active phase imaging system, which can image fires, gas leaks, or air temperature...
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5974862 |
Method for detecting leaks in pipelines
The invention relates to detecting leaks in a pipeline using enhanced methods of data sensing, digitally encoded transmission, and cross-correlation. A plurality of acoustic sensors are applied to...
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