| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 481 | DEVICE AND METHOD FOR MEASURING THE LEVEL OF A LIQUID WITHIN A CONTAINER | US13768608 | 2013-02-15 | US20140230542A1 | 2014-08-21 | Thomas MOLITOR; Frank IBACH |
| A device for measuring the level of a liquid within a container, in particular the level of liquid gas, comprises a housing and a piezoelectric element adapted for generating vibrations when energized. A coupling pad is provided which is bonded to the piezoelectric element for transmitting the vibrations to a surface of the container. Further, a non-tilting element is provided which surrounds the coupling pad. A method for measuring the level of liquid within a container uses a piezoelectric element for generating vibrations which are transmitted into the shell of the container. An analyzing strategy is used which distinguishes between normal post-pulse oscillations of the piezoelectric element after a measurement was triggered, and extended post-pulse oscillations which are the result of echoed oscillations in the shell of the container. | ||||||
| 482 | Device for emulsion measuring by means of a standpipe | US13307757 | 2011-11-30 | US08701483B2 | 2014-04-22 | Roland Welle; Karl Griessbaum |
| A measuring device is for determining a separating layer or a mixing ratio in a container. The measuring device comprises two fill-level measuring apparatuses that acquire the echo curves in a standpipe and outside the standpipe, respectively. Solely from these two echo curves the position of a virtual boundary layer or the mixing ratio of the two different liquids can be determined. | ||||||
| 483 | Acoustic volume indicator | US13114978 | 2011-05-24 | US08695419B2 | 2014-04-15 | Winston B. Young; Huey Wai |
| Acoustic volume indicators for determining liquid or gas volume within a container comprise a contactor to vibrate a container wall, a detector to receive vibration data from the container wall, a processor to convert vibration data to frequency information and compare the frequency information to characteristic container frequency vs. volume data to obtain the measured volume, and an indicator for displaying the measured volume. The processor may comprise a microprocessor disposed within a housing having lights that each represent a particular volume. The microprocessor is calibrated to provide an output signal to a light that indicates the container volume. The processor may comprise a computer and computer program that converts the data to frequency information, analyzes the frequency information to identify a peak frequency, compares the peak frequency to the characteristic frequency vs. volume data to determine the measured volume, and displays the measured volume on a video monitor. | ||||||
| 484 | Discrete fluid level sensor and mount | US12519948 | 2008-01-16 | US08646328B2 | 2014-02-11 | Terrence J. Knowles; Brian J. Truesdale; Kenneth A. Albrecht; Slawomir P. Kielian |
| A level sensor for determining the presence or absence of a liquid in contact with the sensor includes an elongate probe, a transducer operably connected to the probe and configured to produce compressional waves in the probe, and circuitry for detecting acoustic energy emitted into the liquid when liquid is in contact with the probe. A mount for the releasably holding the sensor includes a base have a receiving region formed in part by a plurality of flexible securing fingers. The fingers have locking projections extending therefrom. A contact is mounted to the base and extends into the receiving region. A cartridge supports the level sensor and is received in the receiving region. The cartridge includes a circumferential recess for receiving the securing fingers. When the level sensor is positioned in the cartridge and the cartridge is inserted into the base, the level sensor is operably connected to the contact and the cartridge is resiliently secured in the base. | ||||||
| 485 | METHOD FOR DETERMINING THE FILL LEVEL OF A MEDIUM AND CORRESPONDING DEVICE | US13644021 | 2012-10-03 | US20130276529A1 | 2013-10-24 | Michael GERDING; Michael VOGT |
| A method for determining the fill level of a medium, wherein a transmission signal is transmitted, a return signal is received, and the return signal is evaluated in view of the process variable in a manner which allows a general and flexible handling of interfering signals in the received signals. This result is obtained by filtering at least one of the return signal, a signal derived from the return signal and an envelope curve formed from the return signal into at least one sub-signal, and using said at least one sub-signal for evaluating the return signal for at least determining the fill level. | ||||||
| 486 | Device for measuring foamed media | US12932722 | 2011-03-04 | US08555716B2 | 2013-10-15 | Thomas Niemann; Thomas Kueck; Ingo Zoyke; David Hessenkaemper; Sergej Tonewizki |
| A device for measuring the fill level in a container has an ultrasound sensor and a damping beaker with at least one antechamber. The antechamber has an inlet opening to the container and an outlet opening to the damping beaker, and has a geometric structure, which guides a fluid at least once around the midpoint of the damping beaker. The antechamber has at least two planes lying horizontally over each other. Each plane has a geometric structure, and the geometric structures of the planes are designed so that the fluid streams through the planes in opposite directions. As a result, the path to be traversed in the antechamber is lengthened, and the inflowing medium is additionally swirled. Even foamed media that quickly flow into the antechamber are effectively retained, and degassing is possible prior to entry into the measuring section of the ultrasound sensor. | ||||||
| 487 | Event monitoring and detection in liquid level monitoring system | US13084121 | 2011-04-11 | US08412473B2 | 2013-04-02 | Kelvin L. Woltring; Wayne A. Case; Christian N. Staats; Kenneth M. Wegrzyn |
| 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. | ||||||
| 488 | Apparatus for transferring high-frequency signals comprising overlapping coupling regions that are serially connected | US11659505 | 2005-07-07 | US08397566B2 | 2013-03-19 | Bernhard Michalski; Qi Chen |
| An apparatus for the transfer of broadband, high-frequency signals of a center wavelength (λc), including a conductor structure, which includes at least one signal path and two reference paths arranged symmetrically to the signal path. Together the conductor structure and the two reference paths form a coplanar line, with the conductor structure being arranged on two oppositely lying sides of at least one dielectric substrate layer of a predetermined thickness in such a manner that the conductor structure overlaps in predetermined coupling regions, whereby the coupling region of the conductor structure transfers the high-frequency signals by an electromagnetic coupling, wherein the thickness of the substrate layer (18) is smaller than λc/4, and wherein multiple electromagnetic couplings are arranged serially one after the other. The apparatus enables a galvanic isolation having good transfer properties in the case of frequencies greater than 6 GHz. | ||||||
| 489 | Device for emulsion measuring by means of a standpipe | US13307757 | 2011-11-30 | US20130000400A1 | 2013-01-03 | Roland WELLE; Karl GRIESSBAUM |
| A measuring device is for determining a separating layer or a mixing ratio in a container. The measuring device comprises two fill-level measuring apparatuses that acquire the echo curves in a standpipe and outside the standpipe, respectively. Solely from these two echo curves the position of a virtual boundary layer or the mixing ratio of the two different liquids can be determined. | ||||||
| 490 | Wireless Liquid Quantity Measurement System | US12970664 | 2010-12-16 | US20120158321A1 | 2012-06-21 | Jason P. Bommer; James P. Irwin; Andrew M. Robb; Wayne Cooper; Dennis M. Lewis |
| Technologies are described herein for wirelessly measuring liquid quantity in an enclosure. According to various aspects, an incident electromagnetic wave is transmitted within a conductive enclosure. One or more rebound electromagnetic waves that correspond to the incident electromagnetic wave are received. Using the rebound electromagnetic waves, a transfer function of the rebound electromagnetic waves is measured and a quantity of liquid stored in the enclosure is calculated based on the measured transfer function. | ||||||
| 491 | METHOD FOR DETERMINING OR MONITORING A PREDETERMINED FILL LEVEL, A PHASE BOUNDARY OR A DENSITY OF A MEDIUM | US13375804 | 2010-04-23 | US20120085165A1 | 2012-04-12 | Martin Hortenbach; Martin Urban; Dietmar Frühauf; Tobias Brengartner; Frank Ruhnau; Michael Siegel |
| A method and an apparatus for determining or monitoring a predetermined fill level, a phase boundary or a density of a medium in a container with an oscillatable unit. The oscillatable unit is placed at the height of the predetermined fill level and is excited to oscillate successively with discrete exciter frequencies following one another in a frequency scanning operation (sweep) within a predeterminable frequency band in the working range of the oscillatable unit. The corresponding oscillations of the oscillatable unit are received in the form of received signals; wherein that exciter frequency is ascertained in the frequency scanning operation, at which the oscillatable unit oscillates with an oscillation frequency, which has a predetermined phase shift between the transmission signal and the received signal; and wherein the transmitting/receiving unit excites the oscillatable unit to oscillate with the ascertained oscillation frequency. | ||||||
| 492 | Acoustic volume indicator | US12546996 | 2009-08-25 | US07946168B2 | 2011-05-24 | Winston B. Young; Huey Wai |
| Acoustic volume indicators for determining liquid or gas volume within a container comprise a contactor to vibrate a container wall, a detector to receive vibration data from the container wall, a processor to convert vibration data to frequency information and compare the frequency information to characteristic container frequency vs. volume data to obtain the measured volume, and an indicator for displaying the measured volume. The processor may comprise a microprocessor disposed within a housing having lights that each represent a particular volume. The microprocessor is calibrated to provide an output signal to a light that indicates the container volume. The processor may comprise a computer and computer program that converts the data to frequency information, analyzes the frequency information to identify a peak frequency, compares the peak frequency to the characteristic frequency vs. volume data to determine the measured volume, and displays the measured volume on a video monitor. | ||||||
| 493 | Detector of liquid consumption condition | US11290398 | 2005-12-01 | US20110100118A1 | 2011-05-05 | Kenji Tsukada; Munehide Kanaya |
| A detector of liquid consumption condition includes first and second vibrating parts that can vibrate relatively to a containing space that can be filled and refilled with a liquid. At least a portion of the first and second vibrating parts are exposed to the containing space. Each of the vibrating parts are caused to vibrate by piezoelectric devices based on a driving signal and can generate a counter electromotive force signal by a vibration of the vibrating parts. A liquid consumption condition detecting part can detect a liquid consumption condition, based on the counter electromotive force signal from at least one of the piezoelectric devices. The containing space can contains a predetermined volume of the liquid, and the first vibrating part is placed near a surface of the liquid at a first level, and the second part is placed near a surface of the liquid at a second level. | ||||||
| 494 | Radar level gauge system with adaptive transmission power control | US11807984 | 2007-05-31 | US07895889B2 | 2011-03-01 | Anders Jirskog |
| A radar level gauge system, for determining a filling level of a product contained in a tank, the radar level gauge system comprising a transceiver including a signal generator for generating electromagnetic signals for transmission; a transmitter branch for transmitting the electromagnetic signals; and a receiver branch for receiving electromagnetic signals. The radar level gauge system further comprises a propagation device for allowing transmitted electromagnetic signals to propagate towards a surface of the product inside the tank, where signals are reflected, and for returning reflected electromagnetic signals back from the surface of the product; processing circuitry connected to the transceiver and configured to determine the filling level based on the reflected electromagnetic signals; power sensing circuitry connected to the transceiver and configured to determine a received power level of received electromagnetic signals; and power level adjusting circuitry provided on the transmitter branch of the transceiver, connected to the power determination circuitry, and configured to adjust a transmitted power level of the transmitted electromagnetic signals in response to the determined received power level of the reflected electromagnetic signals. | ||||||
| 495 | Fluid level regulator | US12333814 | 2008-12-12 | US07866209B2 | 2011-01-11 | Douglas A. Tenney |
| A biological specimen collection and transfer system, including a biological sample container configured for storing a biological fluid sample, a vacuum source, a specimen filter having an interior chamber and an opening in communication with the chamber, and a fluid level regulator configured to determine a fluid level in the biological sample container and to dispense a fluid into the container if the determined fluid level is less than a desired fluid level. The fluid level regulator includes a fluid level monitor, a fluid dispenser, and a controller in communication with the fluid level monitor and the fluid dispenser, wherein the fluid level monitor includes a sound source configured to emit sound towards a surface of the fluid sample, and a sound detector configured to measure sound reflected from the surface of the fluid sample, wherein the controller determines the fluid level based at least in part on a measurement of reflected sound emitted from the sound source. | ||||||
| 496 | Pulsed radar level gauging with relative phase detection | US11593384 | 2006-11-06 | US07823446B2 | 2010-11-02 | Valter Nilsson; Fabian Wenger |
| A method for determining a process variable of a product in a tank based on a time delay of electromagnetic waves. The method further comprises forming a measurement signal comprising a sequence of values, each value representing a time correlation between a pulse of a reference signal and a reflected signal, sampling and digitizing this measurement signal to form a digital signal, identifying a time window of the digital signal including the surface echo peak, determining a relative time period between a reference time corresponding to the predefined reference and a beginning of the time window, time-to-frequency transforming the digital signal in the time window to obtain a phase spectrum, determining a relative phase shift of the spectrum and using the relative phase shift to calculate a corresponding time shift, and determining the time delay by adding the relative time period and the time shift.The invention is based on the realization that major improvement of measurement performance, compared to amplitude detection only, can be achieved by discrimination of the phase difference between the reflected signal and a reference. The detection is further independent of the pulse waveform and modulation, significantly reducing the requirements on pulse modulation. | ||||||
| 497 | Filling level measurement method according to the running time principle | US10583354 | 2004-12-14 | US07819002B2 | 2010-10-26 | Dietmar Spanke; Marc Baret; Edgar Schmitt; Yong Jin |
| A reliable method for measuring a fill level of a fill substance in a container using a fill level measuring device working according to the travel-time principle, wherein, periodically, transmission signals are sent in the direction of the fill substance, their echo signals are registered and converted into an echo function, at least one echo characteristic of the echo function is determined and, on the basis of the echo characteristics of at least one preceding measurement, a prediction is derived for the echo characteristics to be expected in the case of the current measurement, the echo characteristics of the current measurement are determined taking into consideration the prediction, and, on the basis of the echo characteristics, the current fill level is determined. | ||||||
| 498 | Liquid sensing apparatus for a liquid container for supplying a liquid to a liquid consuming apparatus, and a liquid container in which the liquid sensing apparatus is built | US12208600 | 2008-09-11 | US07805991B2 | 2010-10-05 | Minoru Usui; Kazuo Koshino; Hitotoshi Kimura |
| A liquid sensing apparatus includes a liquid sensing chamber 33 having a liquid inlet port that is in communication with an external liquid container in which a liquid is reserved, and a liquid outlet port that is in communication with a liquid consuming apparatus, a movable member 34 movable depending on a liquid level in the liquid sensing chamber 33, a recess portion 33b, 41a for cooperating with a wall surface of the movable member 34 to form a closed space when the movable member 34 is moved to a predetermined position depending the liquid level, and a piezoelectric sensing means 40 for applying a vibration to the recess portion and sensing a state of a free vibration following upon the vibration. | ||||||
| 499 | DISCRETE FLUID LEVEL SENSOR AND MOUNT | US12519948 | 2008-01-16 | US20100024543A1 | 2010-02-04 | Terrence J. Knowles; Brian J. Truesdale; Kenneth A. Albrecht; Slawomir P. Kielian |
| A level sensor for determining the presence or absence of a liquid in contact with the sensor includes an elongate probe, a transducer operably connected to the probe and configured to produce compressional waves in the probe, and circuitry for detecting acoustic energy emitted into the liquid when liquid is in contact with the probe. A mount for the releasably holding the sensor includes a base have a receiving region formed in part by a plurality of flexible securing fingers. The fingers have locking projections extending therefrom. A contact is mounted to the base and extends into the receiving region. A cartridge supports the level sensor and is received in the receiving region. The cartridge includes a circumferential recess for receiving the securing fingers. When the level sensor is positioned in the cartridge and the cartridge is inserted into the base, the level sensor is operably connected to the contact and the cartridge is resiliently secured in the base. | ||||||
| 500 | Fluid sensing system and methods, including vehicle fuel sensors | US11489075 | 2006-07-18 | US07644889B2 | 2010-01-12 | Roger F. Johnson |
| Fluid sensing systems and methods, including sensors used to sense various fluid levels in vehicles, are disclosed herein. One aspect of the invention is directed toward a method for sensing a fluid that includes passing electromagnetic radiation through a receptacle positioned to hold a fluid. The receptacle can be configured so that electromagnetic radiation that passes through portions of the receptacle containing fluid is focused. The method can further include determining (a) whether fluid is located in a selected portion of the receptacle based on an amount of electromagnetic radiation that impinges on at least one radiation sensor, (b) a characteristic of fluid located in the passageway of the selected portion based on a pattern of the electromagnetic radiation that is created on the at least one radiation sensor, or (c) both (a) and (b). | ||||||
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