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公开(公告)号：US20170153137A1
公开(公告)日：2017-06-01
申请号：US15320671
申请日：2015-06-19
Applicant: Kamstrup A/S
Inventor： Søren Tønnes Nielsen , Peter Schmidt Laursen , Jens Lykke Sørennsen
Abstract: A system of a plurality of ultrasonic consumption meters 100 each arranged in a utility network 1 for measuring consumption data of a utility in terms of a supplied fluid, the utility network 1 further comprising a data collector 2 for collecting the consumption data is provided, wherein: Each of the ultrasonic consumption meters 100 are arranged to measure a flow rate of the supplied fluid and a pressure of the supplied fluid, the consumption meters 100 comprising: A flow tube 110 with a through-going opening 112 for passage of a fluid between an inlet and an outlet, the flow tube having a wall with an outer surface 114; two ultrasonic transducers 120, 122 arranged at the outer surface 114 of the flow tube 110, so that ultrasonic signals are transmitted through the wall; a control circuit 30 arranged for operating the two ultrasonic transducers 120, 122 and to generate a signal indicative of the flow rate of the fluid; and a communication module 140 connected to the control circuit 130 and arranged for communicating the signal indicative of the flow rate of the fluid to the data collector 2; wherein the control circuit 130 is arranged for operating a first strain gauge 150 arranged at the outer surface 114 of the flow tube 110 to generate a signal indicative of the pressure of the fluid, and 1 wherein the communication module 140 is arranged for communicating the signal indicative of the pressure of the fluid to the data collector 2. The consumption meters 100 of the system are capable of obtaining and communicating data relating to flow and pressure in a utility network to an operator of the network for proper operation of the network.
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12.发明申请公开(公告)号：US20130139610A1
公开(公告)日：2013-06-06
申请号：US13515488
申请日：2010-12-15
Applicant: Peter Schmidt Laursen , Søren Tønnes Nielsen
Inventor： Peter Schmidt Laursen , Søren Tønnes Nielsen
IPC: G01F1/66
CPC classification number: G01F1/662 , G01F1/7082 , G01F15/14
Abstract: The invention relates to an ultrasonic flow meter housing and to an ultrasonic flow meter comprising a housing. The housing is a monolithic polymer structure being cast in one piece. The monolithic structure includes a straight flow tube and a cavity separated from the flow tube, where a shared wall part forms part of the wall of the flow tube and of an inside surface of the cavity. The cavity is arranged for housing at least one ultrasonic transducer at the shared wall part, and a measurement circuit operationally connected to the at least one ultrasonic transducer. In an embodiment, the cavity only has a single opening which can be sealed off by a cover.
Abstract translation: 本发明涉及一种超声波流量计壳体和涉及包括壳体的超声波流量计。 外壳是一体铸造的整体式聚合物结构。 整体结构包括直流管和与流动管分离的空腔，其中共同的壁部分形成流管的壁和腔的内表面的一部分。 空腔被布置成用于在共享壁部分处容纳至少一个超声波换能器，以及测量电路，其操作地连接到所述至少一个超声波换能器。 在一个实施例中，空腔仅具有能被盖封闭的单个开口。
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13.发明授权公开(公告)号：US06850325B2
公开(公告)日：2005-02-01
申请号：US10611988
申请日：2003-07-03
Applicant: Carsten Dam-Hansen
Inventor： Carsten Dam-Hansen
Abstract: The present invention relates to an apparatus for the determination of a condition or state of an object based on quasi-elastic interaction between the object and light transmitted to the object, the apparatus comprising a diffractive optical element having a diffracting region comprising a first diffracting structure for diffraction and focussing of a first light beam to the object, and a second diffracting structure that is laterally displaced relative to the first diffracting structure for diffraction and focussing of a second light beam to the object. The first and second diffracting structures focus the first and second light beams in the same focussing plane, the focussing plane being substantially perpendicular to propagation directions of the first and second light beams. The diffracting region further comprises a receiving diffracting structure for diffraction of light from the light beams that has interacted with the object. The diffracted light is diffracted in a diffraction angle. The size of the diffraction angle is substantially equal to the angle of incidence of the incoming light beam.
Abstract translation: 本发明涉及一种用于基于物体和被传输到物体的光之间的准弹性相互作用来确定物体的状态或状态的装置，该装置包括具有衍射区域的衍射光学元件，衍射区域包括第一衍射结构 用于将第一光束衍射和聚焦到物体，以及第二衍射结构，其相对于第一衍射结构横向移位，用于将第二光束衍射和聚焦到物体。 第一和第二衍射结构将第一和第二光束聚焦在同一聚焦平面中，聚焦平面基本上垂直于第一和第二光束的传播方向。 衍射区域还包括用于衍射来自与物体相互作用的光束的光的接收衍射结构。 衍射光以衍射角衍射。 衍射角的大小基本上等于入射光束的入射角。
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公开(公告)号：US12292318B2
公开(公告)日：2025-05-06
申请号：US17562572
申请日：2021-12-27
Applicant: Kamstrup A/S
Inventor： Anders Hedegaard , Sune Hoveroust Dupont
IPC: G01F1/667
Abstract: A fluid consumption meter (2) is arranged to measure a flow rate of a fluid and has a control device (14) with a sound detection module (26) arranged to detect a sound in said fluid. The control device (14) is configured such that during activation of the sound detection module (26) at least one further module (20, 22, 24) of the consumption meter (2) not required for sound detection is in a deactivated state. A method is provided for detecting sound in a piping system.
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公开(公告)号：US12253397B2
公开(公告)日：2025-03-18
申请号：US17865548
申请日：2022-07-15
Applicant: Kamstrup A/S
Inventor： Lotte Holmegaard , Peter Schmidt Laursen
Abstract: An ultrasound flow meter includes a housing (1) which includes a channel (2) for leading through a fluid, which fluid flow rate is to be measured. Two ultrasound transducers are arranged on the wall which delimits the channel (2), within the housing (1). The ultrasound transducers are fixed within the housing by a non-releasable snap connection and/or clamping connection.
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Patent Agency Ranking
16.发明公开公开(公告)号：US20240210261A1
公开(公告)日：2024-06-27
申请号：US18544654
申请日：2023-12-19
Applicant: Kamstrup A/S
Inventor： Lars CHRISTIANSEN , Sune Hoveroust DUPONT , Jens Lykke SØRENSEN
CPC classification number: G01L11/00 , G01L19/083
Abstract: A method determines a fluid pressure at a fluid flow meter installed in a pipe network that is supplied with fluid at a varying and/or variable input pressure. The method includes recording input pressure information for a determination of a difference between input pressures in a first considered time-window and second considered time-window, aggregating statistical data of a plurality of fluid flow events and/or fluid volume consumption events during the first considered time-window and the second considered time-window, providing the aggregated statistical data to a head-end system (HES) that has access to the input pressure information and determining, by the head-end system, a fluid pressure at the fluid flow meter based on a change in the aggregated statistical data between the first considered time-window and the second considered time-window, and the difference between the input pressures in the first considered time-window and the second considered time-window.
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公开(公告)号：US20230397036A1
公开(公告)日：2023-12-07
申请号：US18250776
申请日：2021-11-29
Applicant: Kamstrup A/S
Inventor： Flemming HALD , Jeppe HOFNI , Mathias Rønholt KIELGAST , Torben MARKUSSEN
CPC classification number: H04W28/0231 , H04W28/10 , H04L67/12
Abstract: A method provides link management for wireless communication between measuring devices (7), installed to measure or detect a value at a utility installation, and a collection unit (5), collecting data from the measuring devices. Uplink data frames are sent from a measuring device to the data collection unit. Some of the uplink data frames are provide a time-limited access opportunity (AO) for receiving downlink frames from the data collection unit. A counter value (FC) in the measuring device is updated by adjusting the counter value for each non-used or unsuccessfully used access opportunity. An urgency indicator is transmitted to the data collection unit by at least some of the uplink data frames that provide an access opportunity. The urgency indicator depends on the counter value. Downlink frames are sent from the data collection unit to the measuring device according to a prioritization scheme, based on the urgency indicator.
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公开(公告)号：US20230389103A1
公开(公告)日：2023-11-30
申请号：US18031430
申请日：2021-11-23
Applicant: Kamstrup A/S
Inventor： Jens HØRDUM , Rasmus KRIGSLUND
Abstract: An automatic reading system (ARS—1) determines values at a plurality of distributed installation locations and communicates data containing said values via a low power wide area Network (LPWAN) to a head-end-system (HES—3). The ARS includes the HES and battery-powered stationary measuring devices (7), configured to be installed at an installation location and to determine said values at the installation location. The measuring devices include an LPWAN connection module to establish a wireless values communication connection via the LPWAN to the HES. A mobile installation device (13) includes a short-range connection module establishing a communication connection (15) and sending candidate information to measuring devices about to be installed at the installation location. The LPWAN connection module attempts to establish for the first time at the one of the installation locations a handshaked LPWAN connection to the LPWAN based on the received LPWAN connection candidate information.
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公开(公告)号：US11616646B2
公开(公告)日：2023-03-28
申请号：US17320400
申请日：2021-05-14
Applicant: Kamstrup A/S
IPC: H04L9/08
Abstract: A method for replacing an existing key derivation key in a utility meter arranged in a meter communication infrastructure in a secure way. The method provide a secure mechanism for exchange of symmetric keys without the need for transferring keys across the meter communication infrastructure. From the head-end system to the utility meter is transmitted a command data message comprising a request for replacing the existing key derivation key with the new key derivation key, the key-generation information and a activation key or an authentication code calculated based on the activation key. The utility meter receiving the command data message is arranged to derive the new key derivation key based on a copy of a disaster recovery key stored in the utility meter and on the key-generation information comprised in the received command data message. Further, the utility meter is arranged for deriving a activation key from the new key derivation key. The activation key is used for verifying the command data message. If the command data message is verified the existing key derivation key is replaced by a new key derivation key.
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公开(公告)号：US20230008984A1
公开(公告)日：2023-01-12
申请号：US17779455
申请日：2020-11-26
Applicant: Kamstrup A/S
Inventor： Sune Hoveroust DUPONT , Jens Lykke SØRENSEN , Søren Tønnes NIELSEN , Anders HEDEGAARD
Abstract: A fluid consumption meter (50) configured to measure a flow rate of a fluid and with a noise detection module (40) for leak detection. Also having a control device with a bi-directional communication unit (60) and being configured to receive a leak detection control signal from an external device (100), to set the fluid consumption meter (50) into a leak detection mode upon reception of the leak detection control signal, and to start a noise measurement for leak detection in said leak detection mode and to transmit data from said noise detection module, an to a leak detection system.
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