WO2021209606A1 - Ensemble de mesure comprenant au moins un dispositif de terrain et au moins un dispositif de réception, ainsi que procédé de surveillance d'un dispositif de terrain - Google Patents

Ensemble de mesure comprenant au moins un dispositif de terrain et au moins un dispositif de réception, ainsi que procédé de surveillance d'un dispositif de terrain Download PDF

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Publication number
WO2021209606A1
WO2021209606A1 PCT/EP2021/059921 EP2021059921W WO2021209606A1 WO 2021209606 A1 WO2021209606 A1 WO 2021209606A1 EP 2021059921 W EP2021059921 W EP 2021059921W WO 2021209606 A1 WO2021209606 A1 WO 2021209606A1
Authority
WO
WIPO (PCT)
Prior art keywords
field device
failure
failure signal
voltage supply
communication channel
Prior art date
Application number
PCT/EP2021/059921
Other languages
German (de)
English (en)
Inventor
Andreas Isenmann
Original Assignee
Vega Grieshaber Kg
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Vega Grieshaber Kg filed Critical Vega Grieshaber Kg
Publication of WO2021209606A1 publication Critical patent/WO2021209606A1/fr

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D21/00—Measuring or testing not otherwise provided for
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D4/00—Tariff metering apparatus
    • G01D4/002—Remote reading of utility meters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D2204/00—Indexing scheme relating to details of tariff-metering apparatus
    • G01D2204/20—Monitoring; Controlling
    • G01D2204/22—Arrangements for detecting or reporting faults, outages or leaks

Definitions

  • the invention relates to a measuring arrangement with at least one field device and at least one receiving device.
  • the invention also relates to a method for monitoring a field device.
  • such a field device can be a limit level sensor, by means of which the level of a flow is to be monitored. If the measured level exceeds or falls below a predetermined limit level, the limit level sensor sends a signal (for example in the form of the measured value) to the receiving device. The signal is only transmitted in those aforementioned cases in which a predetermined measured value is exceeded or not reached.
  • the at least one field device or the multiple field devices can be arranged at a distance from the receiving device and sometimes also in difficult to access locations, the case may arise that the power and / or voltage supply of the field device fails without this being noticed.
  • the operator of such a measuring arrangement feels certain that the measured values do not exceed or fall below the predetermined limit values and are within the norm range.
  • the cause of the missing notification is the lack of power and / or voltage supply.
  • the underlying object of the invention is therefore to provide a measuring arrangement and a method for monitoring a field device, by means of which an inexpensive and reliable monitoring of a field device is made possible.
  • a measuring arrangement comprises at least one field device and at least one receiving device.
  • the field device and the receiving device are stood apart from each other.
  • several spatially distributed field devices are assigned to a receiving device.
  • the receiving device can be a central receiving server, for example a server in a control center.
  • the at least one field device and the receiving device are connected to one another via a first communication channel which is used to transmit a first signal.
  • the first signal is a signal which is transmitted when the measuring device determines an actual measured value which exceeds or falls below a predetermined limit value.
  • the signal can contain the actual measured value or just be a signal which indicates that the limit value has been exceeded or fallen below.
  • the signal is sent from the field device to the receiving device in particular via the cellular network.
  • the signal is transmitted via a wireless connection.
  • the field device also includes an external radio unit connected to the field device for transmitting the signals.
  • the external radio unit can have its own power and / or voltage supply, e.g. in the form of a battery.
  • Means for monitoring the current and / or voltage supply of the at least one field device are also provided.
  • the current and / or the voltage can be made available in the field device by an external current and / or voltage connection or by at least one battery arranged in the field device or an accumulator arranged in the field device.
  • An accumulator can in particular be charged by means of a solar cell. It is preferably a self-sufficient field device.
  • the field device and the receiving device are connected to one another via a second communication channel which is used to transmit a failure signal.
  • the failure signal is then transmitted if a failure of the current and / or voltage supply of the field device is detected.
  • the field device has an energy store that provides energy for the transmission of the failure signal.
  • the connection via the second communication channel should be designed in such a way that the field device and the receiving device do not communicate with one another permanently. For example, a one-time initialization can take place and, in the event of a failure, the field device only sends the failure signal. In particular, it is not checked whether the Signal was received by the receiving device. In particular, reciprocal communication does not necessarily take place.
  • the failure signal can, for example, take the form of a so-called broadcast message, that is, a message that is sent to any recipient who is ready to receive.
  • the failure signal can have the following content: "Batteries empty" or "Supply switched off".
  • the first communication channel can be used to transmit a failure signal if a failure of the current and / or voltage supply of the field device is detected.
  • the field device has an energy store which provides energy for the transmission of the failure signal.
  • the failure signal can, for example, take the form of a so-called broadcast message, that is to say a message that is sent to any recipient who is ready to receive.
  • the failure signal can, for example, have the following content: "Batteries empty" or "Supply switched off".
  • the measuring arrangement according to the invention ensures that an operator is reliably notified in the event of a power and / or voltage supply failure.
  • the energy store ensures that a failure signal can be sent despite the lack of power and / or voltage supply.
  • the second, redundant communication channel according to variant a) increases the reliability of the measuring arrangement.
  • the measuring arrangement according to the invention works in an energy-saving and cost-saving manner. This becomes particularly clear when close-meshed monitoring of the field device is desired.
  • a "still-alive” signal must be sent at short intervals, which overall also leads to a large amount of "still-alive” signals sent. This in turn leads to a large volume of data and high costs
  • a failure signal is sent in those cases in which a failure of the power and / or voltage supply is actually detected.
  • the at least one field device is in particular a limit level sensor which is used to monitor a limit level in a container or to monitor a level in a body of water.
  • it can also be a pressure sensor or a temperature sensor. What the various sensors have in common is that they each determine measured values and send a signal to the field device if a specified limit level, a specified pressure or a specified temperature is exceeded or fallen short of. Different types of sensors can also be connected to a receiving device.
  • the second communication channel is a low power wide area network (LPWAN).
  • LPWAN low power wide area network
  • Examples of such an LPWAN are a Long Range Wide Area Network (LoRa-WAN) or LoRa from the LoRa Alliance, Sigfox or Silver Spring from the Silver Spring Network. Signal transmission with particularly low energy consumption is possible via these networks and high ranges can still be achieved. In particular, ranges of over 10 km can be achieved.
  • the data transfer rate ranges from 292 bit / s to 50 kbit / s.
  • the field device has an energy store for transmitting the failure signal to the receiving device.
  • the energy store can in particular be a capacitor. This can be charged in the manner of a buffer with an existing power and / or energy supply and, if a failure is detected, it can provide the energy for sending the failure signal. In particular, if the failure signal is sent via LPWAN, an energy supply through a capacitor is sufficient.
  • a capacitor is inexpensive, takes up only a small amount of space and, in contrast to a battery, can also be charged when the field device is in operation. Alternatively, however, a battery and / or an accumulator can also be seen as an energy store.
  • the field device has at least one battery for power and / or voltage supply.
  • the power and / or voltage supply for the field device the power and / or voltage supply of an external radio unit connected to the field device is also understood here.
  • the invention also relates to a method for monitoring a field device, where in the case of the field device a signal is sent to a receiving device via a first communication channel when the field device determines whether a limit value has been undershot or exceeded.
  • the current and / or voltage supply of the field device is monitored
  • a failure signal is sent to the receiving device via a second communication channel, the energy for sending the failure signal being made available by an energy store in the field device.
  • a failure signal is sent to the receiving device via the first communication channel, the energy for sending the failure signal being made available by an energy store in the field device.
  • the failure signal is sent in particular via a low power wide area network. Only small amounts of energy have to be made available for sending the failure signal via such a network. This can be implemented, for example, via an energy buffer in the form of a capacitor.
  • the field device switches to a secure mode after a failure has been detected.
  • Secure mode means, for example, that capacitors that are still charged are discharged (activation of a safety integrity level (SIL) protection) or that an electromagnetically secured mode Cover is secured or locked. The energy available from the capacitors can also be used to send the failure signal.
  • SIL safety integrity level
  • the field device has at least one internal energy store and the remaining energy from the at least one internal energy store is transferred to the energy store for sending the failure signal before the failure signal is sent.
  • An internal energy store is in particular the current and / or voltage supply in the form of at least one battery and / or the at least one accumulator.
  • the internal energy store can also be a battery for securing an uninterruptible power supply (UPS).
  • UPS uninterruptible power supply
  • the failure of the field device is indicated in particular on the receiving device.
  • a failure can also be displayed on a higher-level unit, e.g. in the cloud.
  • Fig. 1 shows a measuring arrangement according to the invention in a schematic Dar position.
  • a measuring arrangement 10 with a receiving device 12 and three field devices 14 is shown.
  • the three field devices 14 are spaced apart from the receiving device 12 and arranged spatially distributed.
  • the receiving device 12 is in the present case a central receiving server.
  • the field devices 14 are point level sensors for monitoring a level in a body of water.
  • the field devices 14 are each connected to the receiving device 12 via a first communication channel 16.
  • the first communication channel 16 is a connection via the cellular network.
  • a signal is sent from the respective field device 14 via the first communication channel 16 if a predetermined value is exceeded or not reached on this field device 14. th limit value is determined. For example, exceeding a level in a river can result in the field device 14 which measured such an exceedance sending a signal to the receiving device 12.
  • the field devices 14 also each have means for monitoring a current and / or voltage supply 18. If a failure of the power and / or voltage supply is detected by means of the means 18, a failure signal is sent to the receiving device 12 via a second communication channel 20 (shown here by dashed lines). This second communication channel 20 is an LPWAN.
  • the field devices 14 In order to send a failure signal from the field device 14 to the receiving device 12 when the power and / or voltage supply fails, the field devices 14 each have an energy store 22.
  • the energy store 22 is here in the form of a capacitor.
  • failure signal can also be sent via the first communication channel 16.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

L'invention concerne un ensemble de mesure (10) comprenant au moins un dispositif de terrain (14) et au moins un dispositif de réception (12), le dispositif de terrain (14) et le dispositif de réception (12) étant connectés l'un à l'autre par le biais d'un premier canal de communication (16) qui sert à transmettre un signal. L'objet de l'invention est de fournir un ensemble de mesure (10) destiné à surveiller un dispositif de terrain (14), permettant une surveillance économique et fiable du dispositif de terrain (14). L'ensemble de mesure (10) comprend en outre un moyen de surveillance de l'alimentation en courant et/ou en tension (18) du dispositif de terrain (14) et le dispositif de terrain (14) et le dispositif de réception (12) étant connectés l'un à l'autre par le biais d'un second canal de communication (20), qui sert à transmettre un signal de défaillance, dans le cas d'une détection d'une défaillance de l'alimentation en courant et/ou en tension du dispositif de terrain (14), et le dispositif de terrain (14) comportant un accumulateur d'énergie (22) qui fournit de l'énergie permettant de transmettre le signal de défaillance. La présente invention concerne également un procédé de surveillance d'un dispositif de terrain (14).
PCT/EP2021/059921 2020-04-17 2021-04-16 Ensemble de mesure comprenant au moins un dispositif de terrain et au moins un dispositif de réception, ainsi que procédé de surveillance d'un dispositif de terrain WO2021209606A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020110520.7 2020-04-17
DE102020110520.7A DE102020110520A1 (de) 2020-04-17 2020-04-17 Messanordnung mit mindestens einem Feldgerät und mindestens einem Empfangsgerät sowie Verfahren zur Überwachung eines Feldgerätes

Publications (1)

Publication Number Publication Date
WO2021209606A1 true WO2021209606A1 (fr) 2021-10-21

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Family Applications (1)

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PCT/EP2021/059921 WO2021209606A1 (fr) 2020-04-17 2021-04-16 Ensemble de mesure comprenant au moins un dispositif de terrain et au moins un dispositif de réception, ainsi que procédé de surveillance d'un dispositif de terrain

Country Status (2)

Country Link
DE (1) DE102020110520A1 (fr)
WO (1) WO2021209606A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009047542A1 (de) * 2009-12-04 2011-06-09 Endress + Hauser Process Solutions Ag Verfahren zur Diagnose von fehlerhaften eingestellten Energieversorgungs-Parametern eines Feldgerät-Stromversorgungsmoduls
DE102010043102A1 (de) * 2010-10-29 2012-05-03 Siemens Aktiengesellschaft Verfahren zur manipulationsgesicherten Schlüsselverwaltung
US20130344818A1 (en) * 2012-06-26 2013-12-26 Rosemount Inc. Modular terminal assembly for wireless transmitters
DE102013105994A1 (de) * 2013-06-10 2014-12-11 Endress + Hauser Conducta Gesellschaft für Mess- und Regeltechnik mbH + Co. KG Messsystem mit zumindest einem Feldgerät mit zumindest einer Anzeigevorrichtung sowie Verfahren zum Betreiben desselben
US20150002185A1 (en) * 2013-06-28 2015-01-01 Rosemount Inc. Logic capable power module
US20170230074A1 (en) * 2016-02-05 2017-08-10 Apana Inc. Low power, centralized data collection
DE102018122014A1 (de) * 2018-09-10 2020-03-12 Endress + Hauser Flowtec Ag Meßgeräte-System sowie damit gebildete Meßanordnung

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19929804B4 (de) 1998-07-01 2004-09-16 Elan Schaltelemente Gmbh & Co. Kg Steuerungssystem

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009047542A1 (de) * 2009-12-04 2011-06-09 Endress + Hauser Process Solutions Ag Verfahren zur Diagnose von fehlerhaften eingestellten Energieversorgungs-Parametern eines Feldgerät-Stromversorgungsmoduls
DE102010043102A1 (de) * 2010-10-29 2012-05-03 Siemens Aktiengesellschaft Verfahren zur manipulationsgesicherten Schlüsselverwaltung
US20130344818A1 (en) * 2012-06-26 2013-12-26 Rosemount Inc. Modular terminal assembly for wireless transmitters
DE102013105994A1 (de) * 2013-06-10 2014-12-11 Endress + Hauser Conducta Gesellschaft für Mess- und Regeltechnik mbH + Co. KG Messsystem mit zumindest einem Feldgerät mit zumindest einer Anzeigevorrichtung sowie Verfahren zum Betreiben desselben
US20150002185A1 (en) * 2013-06-28 2015-01-01 Rosemount Inc. Logic capable power module
US20170230074A1 (en) * 2016-02-05 2017-08-10 Apana Inc. Low power, centralized data collection
DE102018122014A1 (de) * 2018-09-10 2020-03-12 Endress + Hauser Flowtec Ag Meßgeräte-System sowie damit gebildete Meßanordnung

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