Having Sonic Sensor Patents (Class 340/621)
  • Patent number: 10324420
    Abstract: A time-to-voltage converter (TVC) that includes a 555 timer integrated circuit (IC), and a charging circuit including a constant current source and a capacitor connected in series. The capacitor can be connected to a discharge pin of the 555 timer IC. The TVC can further include a trigger circuit and a reset circuit to receive a start signal and a stop signal, respectively, from an input line, and accordingly generate a trigger signal or a reset signal to trigger or reset the 555 timer IC. A switch can be configured to, under control of an output signal of the 555 timer IC, connect the input line with the reset circuit. A voltage across the capacitor when the 555 timer IC is reset indicates a time interval corresponding to the start and stop signals.
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: June 18, 2019
    Assignee: King Fahd University of Petroleum and Minerals
    Inventor: Muhammad Taher Abuelma'atti
  • Patent number: 10307537
    Abstract: A liquid detection system for detecting a liquid level position of a liquid in a hanging bottle includes a hanging bottle casing unit for determining the overall gravity of the hanging bottle, a hanging bottle cap unit for determining the liquid density in the hanging bottle, and a transmission unit for transmitting the overall gravity and liquid density of the hanging bottle to a server, and the server. The server is configured to determine the liquid gravity in the hanging bottle, calculate the liquid volume in the hanging bottle based on the liquid gravity and the liquid density, and determine a liquid level position based on the liquid volume.
    Type: Grant
    Filed: August 3, 2016
    Date of Patent: June 4, 2019
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Chuang Wei
  • Patent number: 10303190
    Abstract: A distribution station includes a mobile trailer, a pump on the mobile trailer, a manifold on the mobile trailer and connected with the pump, a plurality of hoses connected with the manifold, a plurality of valves on the mobile trailer, each of the valves situated between the manifold and a respective different one of the hoses, a plurality of guided wave radar level sensors, each of the guided wave radar level sensors being associated with a respective different one of the hoses, and a controller configured to communicate with the guided wave radar level sensors and operate the valves responsive to signals from the guided wave radar level sensors.
    Type: Grant
    Filed: August 10, 2017
    Date of Patent: May 28, 2019
    Assignee: Fuel Automation Station, LLC
    Inventor: Ricky Dean Shock
  • Patent number: 10289126
    Abstract: A distribution station includes a mobile trailer, a pump on the mobile trailer, a manifold on the mobile trailer and connected with the pump, a plurality of hoses connected with the manifold, a plurality of valves on the mobile trailer, each of the valves situated between the manifold and a respective different one of the hoses, a plurality of guided wave radar level sensors, each of the guided wave radar level sensors being associated with a respective different one of the hoses, and a controller configured to communicate with the guided wave radar level sensors and operate the valves responsive to signals from the guided wave radar level sensors.
    Type: Grant
    Filed: October 11, 2016
    Date of Patent: May 14, 2019
    Assignee: Fuel Automation Station, LLC
    Inventor: Ricky Dean Shock
  • Patent number: 10107670
    Abstract: An apparatus for determining and/or monitoring at least one process variable of a medium in a container comprising an oscillatable unit for introduction into the container; a housing, wherein the oscillatable unit is connected with the housing such that the oscillatable unit closes the housing terminally; at least one hollow space in the oscillatable unit which is accessible from an inner space formed by the housing; and a driving/receiving unit for exciting the oscillatable unit to execute mechanical oscillations and for receiving the mechanical oscillations and for transducing them into an electrical, received signal. Inventive features including that the driving/receiving unit is present in such a manner in the hollow space and that the hollow space is filled with a potting material in such a manner that the driving/receiving unit is connected via the potting material for force coupling with a wall of the hollow space.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: October 23, 2018
    Assignee: ENDRESS+HAUSER SE+CO.KG
    Inventors: Volker Dreyer, Sergej Lopatin, Benjamin Mack, Alexander Muller, Helmut Pfeiffer
  • Patent number: 10094923
    Abstract: In a method for checking a first ultrasonic sensor of a motor vehicle for an occlusion, a measuring signal of the first ultrasonic sensor is acquired by an evaluation unit, and from the measuring signal, a decay time of a natural oscillation of the diaphragm of the first ultrasonic sensor, brought about by an excitation pulse, is ascertained. From the measuring signal of either the first ultrasonic sensor or a second ultrasonic sensor, an echo produced by an object located in a sensing range of the first ultrasonic sensor is ascertained, and a distance value of the object is determined on the basis of the echo. An occlusion is signaled if the decay time is less than a predetermined threshold value which would be exceeded if ice and/or dirt were to adhere directly to the diaphragm, and if the distance value is less than a predetermined maximum value.
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: October 9, 2018
    Assignee: VOLKSWAGEN AG
    Inventors: Daniel Mossau, Peter Baumann, Heinecke Carsten, Manuel Tanner, Knut Sanny
  • Patent number: 10012525
    Abstract: A device for determining the fill level of a medium in a container has at least one electronic device and at least one signal conductor arrangement. The electronic device supplies the signal conductor arrangement with electromagnetic signals. To provide a device for determining the fill level that is advantageous compared to the prior art, the signal conductor arrangement has several emitting devices for emitting the electromagnetic signal. A support element that can be inserted in a wall of the container supports the signal conductor arrangement.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: July 3, 2018
    Assignee: KROHNE Messtechnik GmbH
    Inventors: Christoph Baer, Thomas Musch, Michael Deilmann, Attila Bilgic, Stephan Neuburger
  • Patent number: 9920352
    Abstract: Method and system for monitoring for a change in the amount and/or concentration of a pathogen in a pathogenic fluid. The method includes providing a pathogen-impermeable enclosure enclosing the pathogenic fluid, wherein the pathogenic fluid includes a pathogen and a carrier fluid. Additionally, the method includes acoustically monitoring for a change in the amount and/or concentration of the pathogen enclosed in the pathogen-impermeable enclosure.
    Type: Grant
    Filed: April 8, 2013
    Date of Patent: March 20, 2018
    Assignee: Labcyte Inc.
    Inventors: Mitchell W. Mutz, Richard N. Ellson
  • Patent number: 9816848
    Abstract: Methods and apparatus for non-invasive determination of one or more physical properties of a material in a conduit are presented. In one example, the method comprises initiating a vibration on a wall of the conduit at a first location, capturing a response to the vibration at the first location, capturing a response to the vibration at a second location, and determining at least one physical property of the material based on at least one of the captured responses at the first location and the second location.
    Type: Grant
    Filed: January 23, 2015
    Date of Patent: November 14, 2017
    Assignee: ULTIMO MEASUREMENT LLC
    Inventors: Alexander M. Raykhman, Francis M. Lubrano
  • Patent number: 9780346
    Abstract: Method for increasing safety when using bursting discs (BV), wherein the bursting disc (BV) is suitable for releasing gas in a controlled manner from battery systems (B), wherein a signal, in particular a warning signal, is generated in dependence upon the spatial change at least of one site on the surface of the bursting disc (BV).
    Type: Grant
    Filed: May 30, 2014
    Date of Patent: October 3, 2017
    Assignee: ROBERT BOSCH GMBH
    Inventors: Hans Partes, Markus Hald, Holger Fink, Joachim Fetzer
  • Patent number: 9285261
    Abstract: A liquid level sensor includes a rod having a first portion and a second portion, and a wave generation unit affixed to one end of the rod. The wave generation unit generates a wave group that propagates in at least a shear order and a flexural order, and the frequency of the shear wave is based on the diameter of the rod.
    Type: Grant
    Filed: September 12, 2013
    Date of Patent: March 15, 2016
    Assignee: Street Smart Sensors LLC
    Inventor: Terence J. Knowles
  • Patent number: 9163974
    Abstract: Disclosed is a wireless gauge apparatus and manufacturing method thereof. The wireless gauge apparatus comprises a printed circuit board comprising a wireless transceiver and at least one sensor, a power source electrically coupled with the printed circuit board, an antenna electrically coupled with the wireless transceiver and a casing encasing the printed circuit board, the power source and the antenna. The casing is made of polyurethane having a density of 0.8-1.2 g/cm3. The antenna is surrounded by a protective layer having a thickness of 4-8 mm, a density of at most 50 kg/m3 and a dielectric constant of 1-2.7.
    Type: Grant
    Filed: December 11, 2014
    Date of Patent: October 20, 2015
    Assignee: ENEVO OY
    Inventor: Fredrik Kekäläinen
  • Publication number: 20150002301
    Abstract: A sensor probe for monitoring levels of chemical solutions used in automatic car washes, the sensor probes comprising an elongated sensor probe tube able to be installed by being inserted into a hole in the top of storage drums. A sealed enclosure mounted to the top of the tube is thereby positioned above the associated tank, which enclosure contains a liquid level sensor and a wireless receiver/transmitter able to send data to a computer/display/and web server.
    Type: Application
    Filed: June 4, 2014
    Publication date: January 1, 2015
    Inventors: Gilbert J. Rietsch, JR., Norbert Gattinger
  • Patent number: 8816866
    Abstract: A method for audibly detecting a fluid flow state change in a flow meter pipeline. The flow state change may be identified as an upset in the normal flow state. The upset may be corrected to improve the accuracy of the flow meter. A system includes acoustic sensors mounted in the flow meter pipeline, and a computer to collect audible data from the acoustic sensors and compare the audible data to a baseline to detect an upset in the normal fluid flow state.
    Type: Grant
    Filed: November 10, 2008
    Date of Patent: August 26, 2014
    Assignee: Daniel Measurement & Control, Inc.
    Inventor: Donald Day
  • Patent number: 8477029
    Abstract: A modular device for determining attributes of a substance stored in a container having a sensing module, a transmitter module and a power source module. The sensing module is capable of sensing attributes of a substance and providing an output. The transmitter module is configured to transmit an output of the at least one sensing module when operably coupled to the sensing module. The power source module is capable of being operably connected to the sensor module and the transmitter module to power the sensor module and the transmitter module.
    Type: Grant
    Filed: October 23, 2008
    Date of Patent: July 2, 2013
    Assignee: Whirlpool Corporation
    Inventors: Farhad Ashrafzadeh, Ali R. Buendia-Garcia, Richard A. McCoy, Yingqin Yuan
  • Patent number: 8412473
    Abstract: According to various embodiments disclosed herein, battery power may be conserved by reducing the number of transmissions made by a liquid level monitoring system. The efficiency of a liquid level monitoring system may also be improved by reducing or avoiding fuel outages and unnecessary replenishment. Certain embodiments may be configured according to a schedule for making measurements. The measurement may then be compared against one or more thresholds to determine whether to transmit the measurements. A variety of thresholds may be specified and utilized to determine when it is appropriate to transmit the measurements. Further, various embodiments may be configured to detect a change in a monitored condition. Upon the detection of a change in the monitored condition, a measurement may be made and compared to an established threshold for a tank.
    Type: Grant
    Filed: April 11, 2011
    Date of Patent: April 2, 2013
    Assignee: Schmitt Industries, Inc.
    Inventors: Kelvin L. Woltring, Wayne A. Case, Christian N. Staats, Kenneth M. Wegrzyn
  • Patent number: 8354924
    Abstract: A system for facilitating the instructional training of a swimmer wherein the system is further operable to provide object detection to the swimmer of an object within the general movement path of the swimmer. The system further includes a transmitter wherein the transmitter is configured to broadcast at least two audio signals. A receiver is operably coupled to the transmitter utilizing a wireless frequency. The receiver further includes a left earpiece and a right earpiece that have intermediate therebetween two headbands for releasably securing the receiver to the head of the swimmer. The receiver further includes a plurality of sensors mounted to the first headband that are configured to generate and receive sound pulses in order to detect an object within the general movement path of the user.
    Type: Grant
    Filed: January 18, 2010
    Date of Patent: January 15, 2013
    Inventor: Spencer Goodwin
  • Patent number: 8289174
    Abstract: A sealing bolt for sealing a container lid to a container body, the sealing bolt including: a first identity element configured so as to provide a first identification signal when sensed with an ultrasonic reading device; a second identity element configured so as to provide a second identification signal when sensed with an ultrasonic reading device; and a third identity element. The third identity element includes the first and second identity elements and a third identification signal is formed by the intersection points created by an overlap of the first and second identification signals. The invention also concerns a method for sealing a container lid to a container body using such a sealing bolt.
    Type: Grant
    Filed: February 16, 2007
    Date of Patent: October 16, 2012
    Assignee: The European Union, Represented by the European Commission
    Inventors: Marco Sironi, Piercarlo Tebaldi, Paolo Timossi
  • Patent number: 8120500
    Abstract: An acoustic sensor detects presence and/or absence of fluid in a fluid delivery medium. The acoustic sensor detects fluid absence based on the difference of the speed of sound between air and a fluid. For example, the acoustic sensor may detect fluid absence based on a phase shift between acoustic signals transmitted through the fluid delivery medium when fluid is present as compared to acoustic signals transmitted through the fluid delivery medium when fluid is absent, e.g., when air or bubbles are present in the fluid delivery medium.
    Type: Grant
    Filed: December 8, 2008
    Date of Patent: February 21, 2012
    Assignee: Ecolab Inc.
    Inventors: Eugene Tokhtuev, Christopher J. Owen, Anatoly Skirda, Viktor Slobodyan, Anna Pilipchenko
  • Patent number: 8009052
    Abstract: In a method and system for monitoring the power state of an x-ray emitter and/or an x-ray detector, the x-ray emitter is operated according to a set of test parameters, so as to emit x-rays that strike at least a portion of the detector region of the x-ray detector. At least one value characterizing the operation of the x-ray emitter and/or the x-ray detector is determined, and this detected parameter is compared with a comparable reference parameter value. The power state of the x-ray emitter and/or the x-ray detector is determined based on deviation of the detected parameter from the reference parameter.
    Type: Grant
    Filed: September 28, 2007
    Date of Patent: August 30, 2011
    Assignee: Siemens Aktiengesellschaft
    Inventors: Mathias Hörnig, Thomas Mertelmeier, Phillip Thaler
  • Patent number: 7969318
    Abstract: The disclosed invention relates to detecting a flow condition in a fluid supply system. The invention is particularly useful for detecting flow in a toilet system. The flow detection device comprises a processor associated with a flow sensor. Predefined flow criteria are stored in a memory associated with said processor. When the processor detects flow through the fluid supply system, the processor uses the flow criteria to characterize the detected flow. If such flow complies with predefined flow conditions, a flow event is noted and an alert is issue. Such alert is configured according to predefined alert-criteria stored in a memory.
    Type: Grant
    Filed: June 15, 2008
    Date of Patent: June 28, 2011
    Inventors: Matt White, Cary Frieden
  • Patent number: 7952961
    Abstract: A method for tracking motion using an audio compass is disclosed. The method comprises receiving motion sensor data indicating seismic activity recorded by at least two seismic sensors, and converting the received motion sensor data into audio signals for interpretation at an audio compass. The method uses the audio compass to determine a current distance to the seismic activity based on an interpreted signal intensity of the audio signals. The method further uses the audio compass to identify a current position of the audio compass relative to the seismic activity.
    Type: Grant
    Filed: October 15, 2007
    Date of Patent: May 31, 2011
    Assignee: Honeywell International Inc.
    Inventors: Jamal Haque, Andrew W. Guyette, Edward R. Prado, Keith A. Souders
  • Patent number: 7940189
    Abstract: A leak detection system is described for detecting a leak through a closed valve disposed between an upstream pipe and a downstream pipe of an industrial process. An insertable plate is coupled to the valve in the pipe in-line with the fluid flow. A sensor couples to the flow and provides a signature output. A leak detector is coupled to the sensor and adapted to detect a leak through the valve based upon the signature output.
    Type: Grant
    Filed: September 26, 2006
    Date of Patent: May 10, 2011
    Assignee: Rosemount Inc.
    Inventor: Gregory C. Brown
  • Publication number: 20100141460
    Abstract: An acoustic sensor detects presence and/or absence of fluid in a fluid delivery medium. The acoustic sensor detects fluid absence based on the difference of the speed of sound between air and a fluid. For example, the acoustic sensor may detect fluid absence based on a phase shift between acoustic signals transmitted through the fluid delivery medium when fluid is present as compared to acoustic signals transmitted through the fluid delivery medium when fluid is absent, e.g., when air or bubbles are present in the fluid delivery medium.
    Type: Application
    Filed: December 8, 2008
    Publication date: June 10, 2010
    Inventors: Eugene Tokhtuev, Christopher J. Owen, Anatoly Skirda, Viktor Slobodyan, Anna Pilipchenko
  • Patent number: 7659828
    Abstract: An industrial field device provides information indicative of a process variable. The field device includes a controller, communication circuitry, a process variable sensor and measurement circuitry. The communication circuitry is coupled to the controller. The process variable sensor has an electrical characteristic that changes based on a variable of a process fluid. The measurement circuitry is coupled to the process variable sensor and coupled to the controller. The controller is configured to generate communication via the communication circuitry relative to the process variable, and to provide an indication of sand flow or other solids in the fluid.
    Type: Grant
    Filed: August 21, 2006
    Date of Patent: February 9, 2010
    Assignee: Rosemount Inc.
    Inventors: David L. Wehrs, Robert J. Karschnia, Evren Eryurek
  • Publication number: 20090303059
    Abstract: Apparatus (1) for monitoring liquid level in a tank comprises a battery powered monitoring unit (2) for mounting in or on the tank, and a remote display unit (3) which is mains powered. The monitoring unit (2) comprises a microcontroller (8) which operates the monitoring unit (2) alternatively in one of a first operating mode and a second operating mode. During the first operating mode an ultrasonic transducer (7) determines the liquid level at third predefined time intervals of fifteen seconds and operates a radio transceiver (10) to transmit a signal indicative of the liquid level at first predefined time intervals of one hour to the display unit (3). For so long as the microcontroller (8) determines that the liquid level is constant or falling at a normal draw-off rate, the monitoring unit (2) is operated in the first operating mode.
    Type: Application
    Filed: June 5, 2009
    Publication date: December 10, 2009
    Applicant: Tekelek Patents Limited
    Inventors: Martin Robert Von Lintzgy, Peter Anothy McCarthy
  • Patent number: 7579564
    Abstract: A device for indicating a level of a bulk material in a bin. A motor imparts a swinging motion to a paddle located inside the bin. When the paddle engages the material, drag on the paddle causes a counteracting force on the motor, indicating a presence of material at the location of the device. In various embodiments, a paddle shaft, having very little exposure inside the bin, extends from a protective enclosure. The shaft is capped with a flexible section having the paddle attached to it. The paddle is at a downward angle relative to the paddle shaft and extends into the bin so as to engage the material. The paddle may move at an urging of the material so as to avoid damage to the paddle, flexible section, and shaft.
    Type: Grant
    Filed: November 1, 2007
    Date of Patent: August 25, 2009
    Inventor: Edwin Lee Henderson
  • Patent number: 7530268
    Abstract: An apparatus for determining and/or monitoring at least one physical or chemical, process variable of a medium and includes at least one mechanically oscillatable unit and at least one driving/receiving unit. The mechanically oscillatable unit includes a tube and an internal oscillator. The tube is connected to a securement unit with an end turned away from the process and the end of the tube turned toward the process is embodied as a free end. The tube surrounds the internal oscillator and the internal oscillator is secured to the end of the tube turned toward the process with an end turned toward the process. The driving/receiving unit excites the mechanically oscillatable unit to oscillate, respectively it receives the oscillations of the mechanically oscillatable unit. The internal oscillator has at least one groove/neck, which determines at least the oscillation frequency of the mechanically oscillatable unit.
    Type: Grant
    Filed: April 21, 2004
    Date of Patent: May 12, 2009
    Assignee: Endress + Hauser GmbH + Co. KG
    Inventors: Sergej Lopatin, Helmut Pfeiffer
  • Patent number: 7417552
    Abstract: A flood alarm is disclosed. In an illustrative embodiment, the flood alarm includes a float assembly and a telephone system interface module connected to the float assembly. A method of indicating a flood in a structure is also disclosed.
    Type: Grant
    Filed: January 17, 2006
    Date of Patent: August 26, 2008
    Inventor: Milan Vaskovic
  • Patent number: 7342504
    Abstract: A monitoring system includes one or more monitoring devices, positioned in sewer manholes, storm drains, etc., and a remote monitoring station that communicates wirelessly therewith. The monitoring device may be an integrated unit, including sensors, a two-way telemetry unit, a power supply, a processor, and supporting hardware, all located in an enclosed, waterproof housing. The monitoring device is placed within a manhole cavity to obtain depth (e.g., water level) measurements and report the measurements back to the remote monitoring station, which analyzes the data and responds to alert messages when a dangerous water level is detected. The sample and reporting rates of the device, as well as the water level threshold values, may be remotely programmable via commands transmitted from the remote monitoring station. An additional sensor may monitor the manhole cover for security purposes.
    Type: Grant
    Filed: December 16, 2005
    Date of Patent: March 11, 2008
    Assignees: Aeromesh Corporation
    Inventors: Patrick R. Crane, Alan K. Pittman
  • Patent number: 7319401
    Abstract: A radar level gauge system for determining the filling level of a filling material in a tank is disclosed. The system comprises a transmitter for transmitting measuring signals towards the surface of the filling material; a receiver for receiving echo signals from the tank; processing circuitry for determining the filling level of the tank based on said echo signal and adapted to compare said determined filling level with at least one preset threshold value and to produce an alarm signal in dependence of said threshold value; and a storage means for storing the preset threshold value, wherein said threshold value in said storage means is replaceable and/or adjustable. The alarm signal could indicate high level and/or overfill. The possibility of adjusting/replacing the threshold values enables adjustment of the alarm levels when the system is already installed. A corresponding method of operation is also disclosed.
    Type: Grant
    Filed: August 27, 2004
    Date of Patent: January 15, 2008
    Assignee: Rosemount Tank Radar AB
    Inventors: Tomas Åkerström, Anders Welin
  • Patent number: 7277020
    Abstract: Apparatus for indicating the oil level in a central heating oil tank comprises a battery powered monitoring unit (1) for mounting on the oil tank which determines the oil level by an ultrasonic signal transmitter/receiver (18). A first microprocessor (14) in the monitoring unit (1) determines the oil level from the ultrasonic transmitter/receiver (18) and operates a primary transmitter (12) for transmitting a radio signal which includes data indicative of the oil level. A remotely mounted mains electricity powered receiving unit (3) comprises a primary radio receiver (15) for receiving the transmitted signal, and a second microprocessor (16) in the receiving unit (3) controls the operation of a visual display unit (10) for graphically displaying the oil level. The monitoring unit (1) and the receiving unit (3) are operable in a teaching mode initially on power-up of the receiving unit (3) during which the monitoring unit (1) teaches the receiving unit (3) its address.
    Type: Grant
    Filed: May 19, 2005
    Date of Patent: October 2, 2007
    Assignee: Tekelek Patents Limited
    Inventors: Peter Anthony McCarthy, Martin Robert Von Lintzgy
  • Patent number: 7274293
    Abstract: A cable lock device includes a housing, a tampering subsystem, and a cable having a first end and a second end. The first end is attached to the housing and is electrically connected to the tampering subsystem and the second end is selectively attached to the housing. In addition, a switch is disposed within the housing and is electrically connected to the tampering subsystem. The switch is movable between an open state and a closed state to indicate when the second end is attached to the housing. The tampering subsystem includes control circuitry that monitors the position of the switch and the status of the cable to detect removal of the second end from the housing and/or severance of the cable. The control circuitry relays status information of the cable lock device to a control unit via a transmitter to alert a property owner of a security breach.
    Type: Grant
    Filed: December 13, 2004
    Date of Patent: September 25, 2007
    Assignee: Black & Decker Inc.
    Inventors: Robert Bradus, Lawrence E Milburn, James B Watson, Peter W Bressler, John D Coleman, David Schiff
  • Patent number: 7243539
    Abstract: A continuous measurement of the level of contents in a container is effected by a level measuring device functioning in accordance with the transit time principle by means of waves transmitted from a position located above the highest possible contents level onto the surface of the material in the container. A measuring circuit determines the contents level from the transit time of the useful echo reflected from the material surface. In addition, one or more limit sensors are located at the container, each of which furnishes a signal indicating whether the contents level is above or below a level to be monitored by the limit sensor and which is situated between the minimum and maximum contents levels of the container. The measuring circuit receives the output signals of all limit sensors and uses these output signals to check and eventually to correct the contents level measured value determined by the level measuring device.
    Type: Grant
    Filed: September 22, 2004
    Date of Patent: July 17, 2007
    Assignee: Endress + Hauser GmbH + Co.
    Inventors: Johanngeorg Otto, Wolfgang Lubcke
  • Patent number: 7102528
    Abstract: A device for establishing and/or monitoring a predetermined fill level in a container is provided, to indicate the fill level in a container and exhibiting a best possible, optimum fit for an application, which device includes: a mechanical oscillatory structure placed at the height of the predetermined fill level, which structure exhibits a membrane and two mutually separated oscillation bars formed thereon, an electromechanical transducer, which in operation excites the oscillatory structure to oscillate with oscillations, such that the oscillation bars execute oscillations perpendicular to their longitudinal axis, a receiver- and evaluation-unit, which uses the oscillations to establish and/or monitor whether the predetermined fill level has been reached, or not, in which the oscillation bars exhibit a shape in which a mass moment of inertia of a liquid quantity, which the oscillation bars move with them in the immersed state in the liquid, is as large as possible and greater than 0.
    Type: Grant
    Filed: March 27, 2002
    Date of Patent: September 5, 2006
    Assignee: Endress + Hauser GmbH + Co. KG
    Inventor: Helmut Pfeiffer
  • Patent number: 6965312
    Abstract: A method of using a firearm shot helmet detection system includes providing a firearm shot detection system comprising a plurality of helmets worn by respective mobile fighters, each helmet including a firearm shot detection system that detects the presence and geographical origination of a firearm shot, and wirelessly communicates with other firearm shot detection systems of other respective helmets; detecting the presence of a firearm shot with the firearm shot detection system of each helmet; wirelessly communicating distance information on the detected firearm shot with the other firearm shot detection systems of other respective helmets; and determining the geographical origination of the firearm shot using triangulation based on the distance information on the detected firearm shot.
    Type: Grant
    Filed: November 10, 2003
    Date of Patent: November 15, 2005
    Assignee: Traptec Corporation
    Inventor: George H. Lerg
  • Patent number: 6961002
    Abstract: A method of sonically detecting a sonic act such as a graffiti-making act or firearm shot includes providing a sonic act detection system to sonically detect a sonic act and a camera to take an image of a perpetrator of the sonic act; locating the sonic act detection system and the camera near a location where the sonic act is prone to occur; sonically detecting with said sonic act detection system a sonic act; obtaining one or more images of the perpetrator of the sonic act with the camera; communicating to one or more entities that sonic act has been detected.
    Type: Grant
    Filed: May 15, 2003
    Date of Patent: November 1, 2005
    Assignee: Traptec Corporation
    Inventors: George H. Lerg, Arthur J. Devine, Donald L. Roberts
  • Patent number: 6920787
    Abstract: The invention relates to a device for determining and/or monitoring the level of a filling material in a container. According to the invention, an oscillatable unit is provided which is fastened to a membrane, whereby said oscillatable unit is mounted at the height of the predetermined level. An emitting-receiving unit is provided which, with a given emit frequency, causes the membrane and the oscillatable unit to oscillate, and which receives the oscillations of the oscillatable unit. A control/evaluation unit is provided, which identifies once the predetermined level is obtained upon a given change in frequency or which, with the aid of the oscillation frequency of the oscillatable unit, determines the density of the filling material.
    Type: Grant
    Filed: May 8, 2001
    Date of Patent: July 26, 2005
    Assignee: Endress + Hauser GmbH + Co. KG
    Inventors: Wolfgang Brutschin, Sergei Lopatin
  • Patent number: 6864797
    Abstract: The method according to the invention consists in providing two containers fed by the water source whose pollution is desired to be measured, each of the containers containing fish and being equipped with a detector able detect any abnormal behaviour of the fish, alternate the lighting and obscurity periods for said two containers, carry out the detection of the behaviour of the fish in the two containers and trigger an alarm signal when the detection shows an abnormal behaviour of the fish.
    Type: Grant
    Filed: May 21, 2003
    Date of Patent: March 8, 2005
    Assignee: Compagnie Industrielle de Filtration et d'Equipement Chimique (CIFEC)
    Inventor: Luc Derreumaux
  • Patent number: 6843124
    Abstract: A continuous measurement of the level of contents in a container is effected by a level measuring device functionong in accordance with the transit time principle by means of waves transmitted from a position located above the highest possible contents level onto the surface of the material in the container. A measuring circuit determines the contents level from the transit time of the useful echo reflected from the material surface. In addition, one or more limit sensors are located at the container, each of which furnishes a signal indicating whether the contents level is above or below a level to be monitored by the limit sensor and which is situated between the minimum and maximum contents levels of the container. The measuring circuit receives the output signals of all limit sensors and uses these output signals to check and eventually to correct the contents level measured value determined by the level measuring device.
    Type: Grant
    Filed: February 28, 2003
    Date of Patent: January 18, 2005
    Assignee: Endress + Hauser GmbH + Co. KG
    Inventors: Johanngeorg Otto, Wolfgang Lubcke
  • Patent number: 6832516
    Abstract: An ultrasonic liquid level sensor instrument that combines a continuous transmitter that transmits though the air for measuring the level of liquid in a vessel on a continuous basis and a point level sensor that sets a high level alarm. The continuous level transmitter/receiver provides a continuous measurement of the liquid level in the vessel and the point level sensor is used for sensing an overflow, or high level condition in the vessel, as well as failure of the continuous transmitter/receiver. The instrument includes a sensor fixture that holds both the continuous air transmitter/receiver transducer and the point level sensor. The fixture is mounted in a single hole in the wall of a tank or a vessel in which the liquid level is being monitored. Each of the continuous level transmitter/receiver and point level sections of the instrument has a self check capability.
    Type: Grant
    Filed: October 3, 2003
    Date of Patent: December 21, 2004
    Assignee: Cosense, INC
    Inventors: Naim Dam, William Allhusen, Glen Melder
  • Patent number: 6829932
    Abstract: In order to detect a filling process, a signal is emitted into the container and an echo reflected from the container is recorded. At least one parameter, e.g., the amplitude h(t) of the reflected echo at a time t, is determined, and a filling process is detected if the parameter lies outside an expected range.
    Type: Grant
    Filed: July 25, 2002
    Date of Patent: December 14, 2004
    Assignee: VEGA Grieshaber KG
    Inventors: Robert Laun, Dieter Haas
  • Patent number: 6828912
    Abstract: Resonant decay sensors that determine a parameter based on the decay of acoustic standing waves in a tube. Parameters that can be determined include temperature, pressure, the level of a material in the tube, and the height of a material above an end of the tube. Resonant decay sensors can produce both point level and continuous level sensors. A vibration mount, such as a rubber ring, beneficially isolates an acoustic transducer from the body of the tube.
    Type: Grant
    Filed: November 6, 2001
    Date of Patent: December 7, 2004
    Inventor: John Michael Kelly
  • Patent number: 6786090
    Abstract: The invention provides a piezoelectric liquid gauge system in particular for a motor vehicle fuel tank, the system comprising piezoelectric means suitable for transmitting a sound wave in a liquid and for detecting said wave in order to determine the distance traveled by the wave in the liquid on the basis of the time between transmission and reception, said piezoelectric means comprising two distinct active piezoelectric portions suitable respectively for directing a sound wave towards a reference obstacle and a sound wave towards the surface of the liquid to be gauged, the system being wherein the pellet is contained in a housing suitable for being fixed in position in the tank in which measurement is to be performed, the reference obstacle extending over a face of the housing which faces one of the active portions, said face also having a measurement opening placed facing the other active portion and suitable for allowing the measurement sound waves to pass through.
    Type: Grant
    Filed: December 20, 2002
    Date of Patent: September 7, 2004
    Assignee: Marwal Systems
    Inventors: Karim Benghezal, Olivier Vaillant, Christophe Gouzou
  • Patent number: 6746053
    Abstract: A system and method for detecting parallel marketing of an item, include forming at least one of a coating and a code on the item, interrogating the at least one of the coating and said code, and determining from the interrogating whether the item has been transferred from an authorized merchant to an unauthorized merchant.
    Type: Grant
    Filed: October 29, 1998
    Date of Patent: June 8, 2004
    Assignee: International Business Machines Corporation
    Inventors: Ali Afzali-Ardakani, Claudius Feger, Marco Martens, Paul Andrew Moskowitz, Alejandro Gabriel Schrott, Charles P. Tresser, Robert Jacob von Gutfeld
  • Patent number: 6696962
    Abstract: Acoustic level sensing by creating, or failing to create, resonance in a tube having a free end. An acoustic transducer at one end of the tube injects sound at a frequency that could produce resonance, depending on whether the free end is open or closed. The drive to the acoustic transducer is then removed, and the sound decay in the tube is monitored to determine if resonance occurred. Based on that determination, a signal is produced that indicates whether a material has or has not closed the free end of the tube. Beneficially, the same acoustic transducer that produces the sound monitors the sound decay. To determine whether resonance has occurred, or to verify system operation, the sound decay at the possible resonant frequency can be compared to the decay at another frequency. Temperature compensation can be performed by attempting to produce resonance at a plurality of frequencies.
    Type: Grant
    Filed: May 14, 2001
    Date of Patent: February 24, 2004
    Inventor: John M. Kelly
  • Patent number: 6679115
    Abstract: An apparatus for determining the filling level of a product in a container with a transmission unit which generates high-frequency signals and emits them at a predetermined pulse repetition frequency in the direction of the surface of the filled product. The signals are reflected by the surface of the filled product and are received by a receiving unit. A delay circuit transforms the high-frequency signals/reflected signals into low-frequency signals in accordance with a predetermined translation factor and with an evaluation unit which determines the filling level of the product in the container on the basis of the delay time of the signals. The delay circuit includes: a transmission oscillator; a sampling oscillator; a digital sampling circuit; and a closed-loop/open-loop control unit.
    Type: Grant
    Filed: February 14, 2002
    Date of Patent: January 20, 2004
    Assignee: Endress + Hauser GmbH + Co.
    Inventor: Frank Heidecke
  • Patent number: 6662649
    Abstract: An material level monitoring and reporting system uses special micropower impulse radar level sensing probes, with one such probe being inserted into each of a plurality of material containment structures, such as storage tanks. The micropower impulse radar probes use flexible waveguides which extend downward to the tank bottom such that micropower radar impulses travel to and from the liquid surface via a wave guide, with the lapse between emission and reception of the impulse indicating a distance from the probe, and thus a liquid level. Each level sensing probe is connected to a communication link which collects level and status information from the level sensing probes and transmits it to a monitoring site. The material level data may be collected from a plurality of intermediate monitoring sites by a central monitoring sites.
    Type: Grant
    Filed: April 12, 2002
    Date of Patent: December 16, 2003
    Assignee: Simmons Sirvey Corporation
    Inventors: John D. Knight, Charles Grempler
  • Patent number: 6644116
    Abstract: A device for determining and/or monitoring the level of a medium in a container or for ascertaining the density of a medium in the container embodied as a vibration detector. According to the invention the vibration detector still functions reliably even under extreme process conditions and upon abrupt changes in process conditions. The vibration detector has a tubular inner part provided, which is dimensioned such that it is positioned between the housing wall and a drive/receiving unit, and that the tubular inner part is connected to the housing or to the diaphragm.
    Type: Grant
    Filed: June 19, 2002
    Date of Patent: November 11, 2003
    Assignee: Endress + Hauser GmbH + Co. KG
    Inventors: Igor Getman, Sergej Lopatin, Armin Rupp, Bernd Kastner
  • Patent number: 6631639
    Abstract: A non-invasive system and method for measuring liquid level in a vessel utilizes a pair of ultrasonic transducers mounted spaced apart externally on the vessel wall. One of the transducers excites a single pulse of sonic energy that produces a flexural, or elastic, wave in the wall and the second transducer receives the flexural wave to produce an electrical signal waveform corresponding to the travel time of the flexural wave between the two transducers. The electrical waveform signals produced at different times are compared to determine if a phase delay exists between two waveform signals, which indicates that there has been a change in the liquid level condition in the vessel interior space between the two transducers. Measuring the phase delay, or time delay, between the flexural wave components produced at two different times is used to indicate presence or absence of the liquid at a point on the vessel and/or the height of the liquid in the space.
    Type: Grant
    Filed: August 30, 2002
    Date of Patent: October 14, 2003
    Assignee: Cosense, INC
    Inventors: Naim Dam, Howard Paul Austerlitz