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1.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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Patent Agency Ranking
公开(公告)号：US11499853B2
公开(公告)日：2022-11-15
申请号：US16952175
申请日：2020-11-19
Applicant: Kamstrup A/S
Inventor： Søren Tønnes Nielsen , Peter Schmidt Laursen , Kaspar Raahede Aarøe
IPC: G01F1/66 , G01F1/667 , G01F15/063
Abstract: A consumption meter arranged to measure a flow rate of a fluid, comprising: a tube with for passage of the fluid between an inlet and an outlet, multiple individual flow meters arranged at the tube to measure a sub-flow rate of the fluid, a first control circuit and communication interface arranged for receiving the measured sub-flow rate from each of the multiple flow meters, and being arranged to generate a signal indicative of the flow rate of the fluid according to the received sub-flow rates, each of the multiple individual flow meters comprising: a flow meter housing arranged at the tube; first and second ultrasonic transducers arranged in the flow meter housing for transmitting and receiving ultrasonic signals propagating through the fluid; a second control circuit arranged for operating the first and second ultrasonic transducers, and being arranged to generate the signal indicative of the sub-flow rate of the fluid accordingly; and a communication interface arranged for transmitting the signal indicative of the sub-flow rate to the first control circuit.
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公开(公告)号：US11473956B2
公开(公告)日：2022-10-18
申请号：US17257803
申请日：2019-07-04
Applicant: Kamstrup A/S
Inventor： Daniel Beck Rømer , Bjarke Fisker Brogaard
Abstract: Integrated flow meter and control valve (1) including a flow tube (11); a substantially watertight meter housing (12) providing a compartment (121), extending from the flow tube; a metering unit (139 arranged inside the compartment for measuring the flow of a medium flowing though the flow channel, and an electrical valve actuator (18) arranged inside the compartment and adapted to control a flow control element (19) arranged inside the flow channel, wherein that meter housing is formed as an integrated part of the flow tube with the compartment having a primary opening (124) for insertion of the metering unit and a secondary sealable opening (125) for insertion of the electrical valve actuator.
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公开(公告)号：US20220326107A1
公开(公告)日：2022-10-13
申请号：US17715256
申请日：2022-04-07
Applicant: Kamstrup A/S
Inventor： Sune Hoveroust DUPONT
Abstract: A method for locating a leak (19) in a water supply network with a water source (11) and one or more water consumption meters (21, 22) on the consumer side. The method includes calculating a length of the pipe (17) between the consumption meter (21) and the leak (19) location based on a temporal temperature curve and a quantity of water flowing through the at least one consumption meter (21).
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公开(公告)号：US20220205823A1
公开(公告)日：2022-06-30
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：US20220163359A1
公开(公告)日：2022-05-26
申请号：US17434806
申请日：2020-02-27
Applicant: Kamstrup A/S
Inventor： Kasper HEMME , Mads Erik Lund JENSEN , Allan JENSEN
Abstract: Utility meter for measuring thermal energy delivered to a point of consumption by a fluid supplied via a supply flow and a return flow, including a flow meter unit for measuring a supply flow rate or return flow rate of the fluid; a pair of temperature sensing probes for measuring temperatures of the supply flow and the return flow, each of the temperature sensing probes including a resistive temperature device; and a calculator device configured for executing a measuring algorithm for determining an amount of thermal energy delivered to the point of consumption over le a period of time based on flow rates and temperatures received from the flow meter unit and temperature sensing probes, respectively; wherein the calculator device is configured to detect the type of resistive temperature device included in the temperature sensing probes and to adapt the measuring algorithm according to the type of resistive temperature device.
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