Abstract:
The present invention relates to a system and method for detection of contraband such as concealed explosives, drugs, smuggled goods, etc., through the use of an acoustic frequency detector having a crystalline transducer module and mass comparator. The present invention can be employed in a non-destructive manner for the mobile and stationary inspection of object such as luggage, person, containers, etc., through a combination of computer-aided electron counting and mass analysis techniques combined with a crystalline and oil enhanced transducer that, upon return of a system-generated acoustic signal, are used to screen and confirm explosive threats and/or other contraband.
Abstract:
Die Erfindung betrifft ein Verfahren zum Überwachen eines Zustands einer Kolbendichtung (104) eines Zylinders (100), wobei in einem Schritt des Durchführens ein Vergleich zwischen einem in den Zylinder (100) eingekoppelten Schwingungssignal (120) und einem aus dem Zylinder (100) ausgekoppelten, an der Kolbendichtung (104) reflektierten Reflexionssignal (124) des Schwingungssignals (120) und/oder einem aus dem Zylinder (100) ausgekoppelten, an der Kolbendichtung (104) vorbei transmittierten Transmissionssignal (126) des Schwingungssignals (120) durchgeführt wird, und in einem Schritt des Ermittelns ein den Zustand repräsentierender Zustandswert (136) unter Verwendung eines Ergebnisses (138) des Vergleichsermittelt wird.
Abstract:
Vibrational behavior of a wellbore operation can be characterized as a vibrational map relating a modeled or sensed vibration level of the operation's equipment to operational parameters of the wellbore operation. The operational parameters can be controllable by settings of the equipment. The map can include multiple contour lines, each representing a set of adjacent coordinates of operational parameters that have the same vibrational level. Tracing a contour line can include determining vibration at a pre-tracing coordinate, adjusting the operational parameters until the vibration level to be mapped is reached at a tracing origin coordinate, then varying the operational parameters while keeping the vibration level constant until the tracing origin or a bound of the operational parameters is reached. Vibration levels having multiple, non-intersecting contour lines can be found by repeating tracing from a different pre-tracing coordinate.
Abstract:
The invention relates to a system and method for detecting the changes in the structural health of a composite panel, more specifically structural or material changes caused to the composite panel as a result of de-lamination, distortion or breakage of the material at the molecular level rendering the composite panel unfit for use.
Abstract:
A method for processing data (30) obtained from a condition monitoring system (10), which comprises the step of obtaining dynamic signal data in the form of a first time waveform (28)comprising a number of samples from at least one sensor (14). The method comprises the step of creating a plurality of new time waveforms (30) from said first time waveform (28), each of said plurality of new time waveforms (30) having a smaller number of samples than said first time waveform (28), and transmitting or displaying or storing said plurality of new time waveforms (30) instead of said dynamic signal time waveform data.
Abstract:
A method of determining a state of biofouling of a membrane is provided. The membrane is contained within a flow cell and the flow cell has an outer surface coupled to a tranducer, The method comprises introducing inorganic particles into the flow cell such that the inorganic particles form a part of a top surface of a foulant layer on the membrane. The transducer then emits acoustic waves towards the membrane and an acoustic signature of reflected sound waves are detected. A state of biofouling of the membrane is determined based on the detected acoustic signature. A method and an apparatus are also provided for determining a state of biofouling in commercial membrane modules such as spiral wounded membrane modules.
Abstract:
A method for determining the purity or authenticity of a substance being transported in a container through a supply chain including providing an entry transmitter for generating a multi-frequency coded ultrasonic signal and an entry receiver for receiving said signal after it has passed through the substance and the container, generating an entry identifier of the substance in the container, recording said entry identifier at an entry point of said supply chain, transporting the substance in the container to a destination, providing an exit transmitter for generating a multi-frequency coded ultrasonic signal and an exit receiver for receiving said signal after it has passed through the substance and the container, generating an exit identifier of the substance in the container, and comparing said entry identifier and said exit identifier to determine whether the substance in the container has been altered during travel through the supply chain.
Abstract:
Gauss-Rees waveform utilization in identifying an object, including: directing a primary acoustic waveform at the object to produce a nonlinear acoustic effect; receiving a secondary wavelet produced by the nonlinear effect; and processing the received secondary wavelet in identifying the object. The object is identified by composition, image, and preferably both. The object can be concealed in a container, underground, under water, or otherwise.
Abstract:
Pour compresser un signal numérique d'acquisition (12) représentant un signal analogique pseudo-sinusoïdal centré échantillonné, un procédé de compression de données (10) comporte une étape de compression avec perte (30) éventuellement suivie d'une étape de compression sans perte (40). La compression avec perte (30) est telle que chaque échantillon du signal numérique d'acquisition (12) correspondant à un extremum local est comparé à deux seuils S1 et S2, et est conservé dans un signal numérique synthétique (13) sans modification si son amplitude est supérieure à S1 ou inférieure à S2 ou à défaut après modification si l'amplitude d'un échantillon correspondant à un extremum local immédiatement suivant et/ou immédiatement précédent est supérieure à S1 ou inférieure à S2. Les autres échantillons ne sont pas conservés dans le signal numérique synthétique. L'invention concerne également un procédé de reconstruction (50) d'une approximation du signal d'acquisition (12), et un système pour la mise en œuvre des deux procédés.