公开(公告)号：US20180188210A1

公开(公告)日：2018-07-05

申请号：US15741560

申请日：2016-07-01

Applicant: Kamstrup A/S

Inventor： Søren Tønnes Nielsen ,  Peter Schmidt Laursen ,  Jens Lykke Sørensen ,  Sune Hoveroust Dupont

IPC: G01N29/032

CPC classification number: G01N29/032 ,  G01D4/00 ,  G01D4/002 ,  G01D4/004 ,  G01F1/666 ,  G01M3/243 ,  G01M3/2815 ,  G01N2291/015 ,  G01N2291/02408 ,  G01N2291/02416 ,  G01N2291/044 ,  Y02B90/241 ,  Y02B90/242 ,  Y02B90/246 ,  Y04S20/32 ,  Y04S20/322 ,  Y04S20/36 ,  Y04S20/42

Abstract: A turbidity measurement device for measuring turbidity of a fluid flowing in a flow tube. A first transducer transmits ultrasonic signals through the fluid in the turbidity measurement section so as to provide a first ultrasonic standing wave between the first and second section ends. A receiver transducer receives the ultrasonic scattered response from particles in the fluid flowing through the turbidity measurement section. A control circuit operates the transducers and generates a signal indicative of the turbidity of the fluid in response to signals received from the receiver transducer. Preferably, the device may comprise a second transducer for generating a second ultrasonic standing wave with the same frequency, and further the two transducers may be used to generate a measure of flow rate by means of known ultrasonic techniques. This flow rate may be used in the calculation of a measure of turbidity. Both turbidity facilities and flow rate facilities may be integrated in a consumption meter, such as a heat meter or a water meter.

公开(公告)号：US20170122829A1

公开(公告)日：2017-05-04

申请号：US15323626

申请日：2015-07-03

Applicant: Kamstrup A/S

Inventor： Anders Skallebæk ,  Jens Lykke Sørensen ,  Kristian Rokkjær

IPC: G01L19/08 ,  E03B7/00 ,  G06F17/14 ,  G01L19/00

CPC classification number: G01L19/086 ,  E03B7/003 ,  G01M3/2815

Abstract: The invention provides a pressure sensor device arranged for measuring a pressure in a fluid pipe system, e.g. a utility network. A measurement system with a pressure sensor serves to measure pressure in the fluid pipe system, and a data processing unit determines at least one statistical parameter in response to a plurality of pressure measurements. Data packets with the statistical parameter is then transmitted by means of a communication module, e.g. via a data network which serves for remote reading of utility meters. The statistical parameter is selected from the second, third and fourth statistical moments of the pressures measured with the plurality of measurements of pressure. The pressure sensor device in a battery driven form can be placed at remote locations in a fluid pipe system to monitor pressure transients, e.g. in a water distribution system. Especially, a time stamp may follow the statistical parameter(s) sent, such that it is possible to track pressure transient creating events on the fluid pipe system.

公开(公告)号：US20240085378A1

公开(公告)日：2024-03-14

申请号：US18509492

申请日：2023-11-15

Applicant: Kamstrup A/S

Inventor： Søren Tønnes Nielsen ,  Peter Schmidt Laursen ,  Jens Lykke Sørensen ,  René Gajda Kristensen ,  Martin Christian Høj Petersen

IPC: G01N29/032 ,  G01D4/00 ,  G01F1/66 ,  G01M3/24 ,  G01M3/28

CPC classification number: G01N29/032 ,  G01D4/00 ,  G01D4/002 ,  G01D4/004 ,  G01F1/666 ,  G01M3/243 ,  G01M3/2815 ,  G01N2291/015 ,  G01N2291/02408 ,  G01N2291/02416 ,  G01N2291/044 ,  Y02B90/20 ,  Y04S20/30

Abstract: A consumption meter, e.g. a water or heat meter, for measuring a flow rate of a fluid supplied in a flow tube. First and second ultrasonic transducers are arranged at the flow tube for transmitting and receiving ultrasonic signals transmitted through the fluid and operated by a flow measurement sub-circuit for generating a signal indicative of the flow rate of the fluid. A noise measurement sub-circuit operates a sensor arranged at the flow tube for detection of acoustic signals of the flow tube, and being arranged to generate a signal indicative of a noise level of the flow tube accordingly. This sensor may comprise a separate transducer, or the sensor may be constituted by one or both of the first and second ultrasonic transducers. The consumption meter may communicate data representative of the noise level via a communication module along with data consumed amount of water, heat etc. Such consumer noise level measurement at the consumer site allows collection of noise level data to assist in locating fluid leakages in a fluid supply pipe system.

公开(公告)号：US20210003531A1

公开(公告)日：2021-01-07

申请号：US17029153

申请日：2020-09-23

Applicant: Kamstrup A/S

Inventor： Søren Tønnes Nielsen ,  Peter Schmidt Laursen ,  Jens Lykke Sørensen ,  René Gajda Kristensen ,  Martin Christian Høj Petersen

IPC: G01N29/032 ,  G01D4/00 ,  G01M3/24 ,  G01F1/66 ,  G01M3/28

Abstract: A consumption meter, e.g. a water or heat meter, for measuring a flow rate of a fluid supplied in a flow tube. First and second ultrasonic transducers are arranged at the flow tube for transmitting and receiving ultrasonic signals transmitted through the fluid and operated by a flow measurement sub-circuit for generating a signal indicative of the flow rate of the fluid. A noise measurement sub-circuit operates a sensor arranged at the flow tube for detection of acoustic signals of the flow tube, and being arranged to generate a signal indicative of a noise level of the flow tube accordingly. This sensor may comprise a separate transducer, or the sensor may be constituted by one or both of the first and second ultrasonic transducers. The consumption meter may communicate data representative of the noise level via a communication module along with data consumed amount of water, heat etc. Such consumer noise level measurement at the consumer site allows collection of noise level data to assist in locating fluid leakages in a fluid supply pipe system.

公开(公告)号：US10564017B2

公开(公告)日：2020-02-18

申请号：US16335084

申请日：2017-09-19

Applicant: Kamstrup A/S

Inventor： Søren Tønnes Nielsen ,  Jens Lykke Sørensen ,  Paul Martin Bendixen

IPC: G01F1/66 ,  G01N29/02

Abstract: Ultrasonic flowmeter for measuring the flowrate of a fluid based on transit times of opposite propagating ultrasonic wave packets, including two ultrasonic transducers arranged at a flow tube for transmitting and receiving the ultrasonic wave packets through a fluid; a control circuit configured for operating the ultrasonic transducers to transmit and receive co-propagating and counter-propagating ultrasonic wave packets, and to determine transit times between transmission and reception of the ultrasonic wave packets; wherein the control circuit is further configured to continuously determine the flowrate of the fluid based on sequential application of separate flow measurement sequences and flow estimation sequences, the flow measurement sequence including transmitting and receiving a co-propagating wave packet and a counter-propagating wave packet, determining a transit time difference between the co-propagating and the counter-propagating wave packets, determining the speed of sound in the fluid, and calculating the flowrate based on the transit time difference and the speed of sound; and the flow estimation sequence including transmitting and receiving a co-propagating wave packet and/or a counter-propagating wave packet, and based on the co-propagating or the counter-propagating wave packet, determining whether a fluid condition of the fluid has changed since the previous flow measurement.

公开(公告)号：US20190219429A1

公开(公告)日：2019-07-18

申请号：US16335084

申请日：2017-09-19

Applicant: Kamstrup A/S

Inventor： Søren Tønnes Nielsen ,  Jens Lykke Sørensen ,  Paul Martin Bendixen

IPC: G01F1/66

CPC classification number: G01F1/668 ,  G01F1/662 ,  G01F1/667 ,  G01F25/0007

Abstract: Ultrasonic flowmeter for measuring the flowrate of a fluid based on transit times of opposite propagating ultrasonic wave packets, including two ultrasonic transducers arranged at a flow tube for transmitting and receiving the ultrasonic wave packets through a fluid; a control circuit configured for operating the ultrasonic transducers to transmit and receive co-propagating and counter-propagating ultrasonic wave packets, and to determine transit times between transmission and reception of the ultrasonic wave packets; wherein the control circuit is further configured to continuously determine the flowrate of the fluid based on sequential application of separate flow measurement sequences and flow estimation sequences, the flow measurement sequence including transmitting and receiving a co-propagating wave packet and a counter-propagating wave packet, determining a transit time difference between the co-propagating and the counter-propagating wave packets, determining the speed of sound in the fluid, and calculating the flowrate based on the transit time difference and the speed of sound; and the flow estimation sequence including transmitting and receiving a co-propagating wave packet and/or a counter-propagating wave packet, and based on the co-propagating or the counter-propagating wave packet, determining whether a fluid condition of the fluid has changed since the previous flow measurement.

公开(公告)号：US09733112B2

公开(公告)日：2017-08-15

申请号：US14361269

申请日：2012-11-30

Applicant: Kamstrup A/S

Inventor： Jens Lykke Sørensen ,  Paul Martin Bendixen

IPC: G01F1/66 ,  G06F17/40 ,  G06F19/00 ,  G01P5/24

CPC classification number: G01F1/66 ,  G01F1/662 ,  G01F1/667 ,  G01P5/245 ,  G06F17/40 ,  G06F19/00

Abstract: The invention relates to a method of operating an ultrasonic flow meter by digitally sampling received signals. Acoustic wave packets are transmitted through a measuring distance in opposite directions, and the received signals are digitized at a sampling frequency being below the Nyquist-limit of two times the signal frequency of the wave packet to generate digitized under-sampled signals 31. From the digitized under-sampled signals, the difference in propagation time along the measuring distance is determined.

公开(公告)号：US09714858B2

公开(公告)日：2017-07-25

申请号：US14443772

申请日：2013-11-21

Applicant: Kamstrup A/S

Inventor： Peter Schmidt Laursen ,  Søren Tønnes Nielsen ,  Jens Lykke Sørensen

IPC: G01F15/06 ,  G01D4/02 ,  G01D11/24

CPC classification number: G01F15/06 ,  G01D4/02 ,  G01D11/24

Abstract: A consumption meter is provided with a conductive feed through for external communication equipment. The meter comprises a housing (104) which forms a closed compartment when an opening of the housing is closed with a cover (106). The compartment includes a communication module (204) and the conductive feed through comprises at least one conductive path (202, 408) from the communication module (204) to an outside part of the meter (102), which outside part is subject to ambient conditions. The path is provided via the opening of the housing and a sealing means (210) in the opening of the housing is used to seal against a first surface (308) of the conductive path when the cover is attached to the housing.

公开(公告)号：US20140216167A1

公开(公告)日：2014-08-07

申请号：US14346177

申请日：2012-09-19

Applicant: Kamstrup A/S

Inventor： Søren Tønnes Nielsen ,  Peter Schmidt Laursen ,  Jens Lykke Sørensen

IPC: G01F1/66

CPC classification number: G01F1/66 ,  G01F1/662 ,  G01F1/667

Abstract: The invention relates to an ultrasonic flow meter arranged to measure a flow rate of a liquid, the flow meter comprises a flow tube 2, optionally a measurement insert, and two or more ultrasonic transducers 8 which are arranged in transducer inserts 20 to be inserted into the flow tube through openings in the flow tube. The transducer inserts are formed monolithically with the housing as a part of the bottom of the housing. The transducer inserts are in a mount position inserted through the openings in the flow tube to extend into the flow passage so that the surface 15 of the transducer inserts protrude into the flow passage. In this manner, gas bubbles, such as air bubbles, released from the flowing liquid will not rest in front of the transducer insert irrespectively of the orientation of the flow meter in the pipe installation.

Abstract translation: 本发明涉及一种布置成测量液体流速的超声波流量计，该流量计包括一个流量管2，可选地是一个测量插入件，以及两个或多个超声波换能器8，它们设置在换能器插入件20中以插入 流管通过流管中的开口。 换能器插入件与外壳一体地形成为壳体底部的一部分。 换能器插入件处于穿过流管中的开口插入的安装位置，以延伸到流动通道中，使得换能器插入件的表面15突出到流动通道中。 以这种方式，从流动液体释放的气泡（例如气泡）不会停留在换能器插入件的前面，而与管道安装中的流量计的取向无关。