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公开(公告)号：US20240192043A1
公开(公告)日：2024-06-13
申请号：US18581128
申请日：2024-02-19
申请人： BNSF Railway Company
CPC分类号： G01F23/205 , G01F23/20 , G01F25/20 , G01N3/08 , G01N27/9053 , G01F23/0007 , G01G19/047 , G01M17/10
摘要： A rail vehicle includes a truck having wheels for engaging a railroad track, a bolster supported by the truck, and a tank supported by the bolster for storing a lading. A measurement system measures the level of the lading within the tank and includes gauges and a controller. The gauges are disposed at selected points on the bolster for sensing at least one of lateral and longitudinal localized displacement experienced by the bolster during motion of the rail vehicle. The controller calculates the level of the lading within the tank and compensates for changes in the level of the lading during motion of the rail vehicle in response to signals generated by the gauges.
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公开(公告)号：US11828659B2
公开(公告)日：2023-11-28
申请号：US17071568
申请日：2020-10-15
申请人： ABB Schweiz AG
摘要： A system, method, and apparatus is provided for magnetostrictive position detectors to compensate fluid level measurements for temperature conditions associated with the process without the use of a built-in or external stand-alone temperature sensor. Also disclosed is an algorithm to compensate for temperature conditions associated with the process by determining thermal error coefficients for temperature compensation that are proportional to the process temperature via digital processing of the signals of the position detector.
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3.发明授权公开(公告)号：US11650302B2
公开(公告)日：2023-05-16
申请号：US16966737
申请日：2019-01-14
IPC分类号： G01S13/34 , G01F23/284 , G01S7/40 , G01F25/20
CPC分类号： G01S13/343 , G01F23/284 , G01F25/20 , G01S7/4004 , G01S7/4056 , G01S7/4091
摘要： Disclosed is a method for detecting a faulty state of an FMCW-based fill level measuring device. For this, a correlation coefficient is ascertained by correlation, especially cross correlation, of the measurement signal with a reference signal. The faulty state is accordingly detected when the correlation coefficient subceeds a predefined minimum value. In this way, the functioning of the fill level measuring device can be monitored with a degree of safety allowing the fill level measuring device to be applied also in process plants and measuring environments, which require extremely reliable measuring apparatuses, and measurement data.
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公开(公告)号：US11951961B2
公开(公告)日：2024-04-09
申请号：US16543658
申请日：2019-08-19
发明人： Blaise Ganzel , Andreas Marx , Daniel Noll
CPC分类号： B60T17/225 , B60T13/145 , B60T13/686 , G01F23/64 , G01F23/74 , G01F25/20 , G01F25/22
摘要： A testing method includes the steps of: (1) providing a negative pressure generator; (2) generating a negative pressure in a fluid passageway and a chamber which are in fluid communication with a guiding section of a fluid reservoir wherein a second sensing element is affixed to a guiding section of the fluid reservoir; (3) transferring a fluid flow stream from the guiding section to the chamber via the fluid passageway and drawing a float having a first sensing element from an upper position to a lower position within the guiding section; (4) generating a signal via the first and second sensing elements as the float moves relative to the second sensing element within the guiding section; and (5) transmitting a signal to at least one of a control unit or a graphical user display.
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公开(公告)号：US11940315B2
公开(公告)日：2024-03-26
申请号：US17834311
申请日：2022-06-07
IPC分类号： G01F23/284 , G01F22/00 , G01F25/20
CPC分类号： G01F23/2845 , G01F22/00 , G01F23/284 , G01F25/20
摘要： A filling level determination system, for determining a filling level of a product in a tank, comprising a measurement unit for arrangement at a measurement position, the measurement unit including a transceiver; and an antenna arrangement coupled to the transceiver for radiating an electromagnetic transmit signal generated by the transceiver from the measurement position towards a target position on the tank wall, and for returning an electromagnetic first reflection signal resulting from reflection of the transmit signal at the target position back towards the transceiver; and processing circuitry coupled to the transceiver of the measurement unit and being configured to determine the filling level based on tank deformation data indicative of a known relation between the level of the product in the tank and deformation of the tank at the first target position, and a timing relation between the first transmit signal and the first reflection signal.
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公开(公告)号：US11913969B2
公开(公告)日：2024-02-27
申请号：US17360136
申请日：2021-06-28
发明人： Arun Shankar Venkatesh Iyer , Narcisse Michel Nzitchieu Gadeu , Simon Weidenbruch , Jörn Lange , Sebastian Eumann
IPC分类号： G01N9/24 , G01F25/20 , G01F23/288
CPC分类号： G01N9/24 , G01F23/288 , G01F25/20
摘要： A method for calibrating a radiometric device for determining and/or monitoring the density of a medium located in a container includes: determining the count rate of the radioactive radiation after it has passed through the empty container on the basis of the activity of the transmitting unit; determining the measured count rate of the radioactive radiation after it has passed through the container when a calibration medium of known density is located in the container; determining the mass attenuation coefficient according to the formula μ=−(ln(N/N0))/(ρ1D), where D is a beam path of the radioactive radiation or inner diameter of the container, and ρ1 is density of the calibration medium; and calculating a calibration curve representing the dependence of the density of the medium on the count rate of the measured radiation intensity after the radiation has passed through the container.
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公开(公告)号：US20240011816A1
公开(公告)日：2024-01-11
申请号：US18217672
申请日：2023-07-03
发明人： CHEN-HO CHIEN , LI-HUI HSIEH , JEN-JER JAW
摘要： A calibration system is configured to detect a capacity difference of a tipping bucket rain gauge and determine an operational condition of the tipping bucket rain gauge. The calibration system includes a field calibration device, a detection communication box, and an application. The application is executed by an electronic device, which, upon receiving metering information and environmental information transmitted by the detection communication box, can calculate the capacity difference of the tipping bucket rain gauge. The calibration system allows an operator to directly perform testing of the capacity difference and the operational condition of the tipping bucket rain gauge, so as to provide users with follow-up measures or suggestions.
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公开(公告)号：US11867550B2
公开(公告)日：2024-01-09
申请号：US17836103
申请日：2022-06-09
发明人： John A. Broadbent
摘要： An ice maker includes a refrigeration system, a water system, and a control system. The control system includes an air fitting disposed above the sump of the water system, a pneumatic tube, and a controller including a processor and an air pressure sensor. The air fitting defines a chamber in which air may be trapped and includes one or more openings through which water in the sump is in fluid communication with the air in the chamber. The pneumatic tube is in fluid communication with the air pressure sensor and the air fitting. The air pressure sensor is adapted to sense a pressure corresponding to a sump water level. The controller is adapted to control the operation of the refrigeration system and the operation of the water system based upon the sump water level. To avoid errors in water level measurements due to temperature changes, the system uses the pressure sensor data's noise level to detect when the water level reaches the bottom of the air fitting.
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公开(公告)号：US20230408319A1
公开(公告)日：2023-12-21
申请号：US18250614
申请日：2020-10-26
申请人： VEGA Grieshaber KG
发明人： Steffen Wälde
IPC分类号： G01F23/284 , G01F25/20
CPC分类号： G01F23/284 , G01F25/20
摘要： The present invention relates to a topology-acquiring radar level gauge for measuring a fill level and a topology of a fill material, comprising: a radar unit; an antenna having at least one transmitting element and at least two receiving elements; a control unit; and a memory, in which at least two different sets of calibration data are stored in the memory.
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公开(公告)号：US20230280200A1
公开(公告)日：2023-09-07
申请号：US17999520
申请日：2021-04-23
发明人： Bernhard Michalski
IPC分类号： G01F23/284 , G01F25/20
CPC分类号： G01F23/284 , G01F25/20
摘要： A radar-based, fill-level measurement device for measuring a fill-level of a filling material in a container, the high-frequency unit of which can be checked with regard to its functionality, is designed redundantly and thus comprises two, activatable, high-frequency sources for generating the high-frequency signal and two, activatable receivers for sampling the received signal such that a time-prolonged evaluation signal is generated. As a result, a correspondingly designed diagnosis unit can switch between the active high-frequency source and/or between the active receiver, wherein before and after the switching, a defined property of the evaluation signal, such as a signal amplitude, is ascertained. If the defined property of the evaluation signal changes at least by a defined value as a result of the switching, the high-frequency unit is classified as not functional.
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