WO2008080898A1 - Procédé pour faire fonctionner un appareil de champ autonome de métrologie des processus - Google Patents

Procédé pour faire fonctionner un appareil de champ autonome de métrologie des processus Download PDF

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Publication number
WO2008080898A1
WO2008080898A1 PCT/EP2007/064455 EP2007064455W WO2008080898A1 WO 2008080898 A1 WO2008080898 A1 WO 2008080898A1 EP 2007064455 W EP2007064455 W EP 2007064455W WO 2008080898 A1 WO2008080898 A1 WO 2008080898A1
Authority
WO
WIPO (PCT)
Prior art keywords
field device
unit
level unit
active mode
energy
Prior art date
Application number
PCT/EP2007/064455
Other languages
German (de)
English (en)
Inventor
Christian Seiler
Original Assignee
Endress+Hauser Process Solutions Ag
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 Endress+Hauser Process Solutions Ag filed Critical Endress+Hauser Process Solutions Ag
Publication of WO2008080898A1 publication Critical patent/WO2008080898A1/fr

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Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/20—Pc systems
    • G05B2219/25—Pc structure of the system
    • G05B2219/25187—Transmission of signals, medium, ultrasonic, radio
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/20—Pc systems
    • G05B2219/25—Pc structure of the system
    • G05B2219/25289—Energy saving, brown out, standby, sleep, powerdown modus for microcomputer
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/20—Pc systems
    • G05B2219/25—Pc structure of the system
    • G05B2219/25428—Field device
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/31—From computer integrated manufacturing till monitoring
    • G05B2219/31121—Fielddevice, field controller, interface connected to fieldbus

Definitions

  • process measurement field devices are often used, which are used for detecting and / or influencing process variables.
  • field devices are level gauges, mass flowmeters, pressure and temperature measuring devices, pH and conductivity meters, etc., which detect the corresponding process variables level, flow, pressure, temperature, pH or conductivity as sensors.
  • actuators such.
  • B valves that affect the flow of a liquid in a pipe section or pumps that affect the level in a container.
  • field devices in modern manufacturing plants via standardized fieldbus systems (Profibusä, FoundationAFieldbus, HART® etc.) with higher-level units, eg. For example, control systems or control units connected.
  • higher-level central units are used for process control, process visualization, process monitoring and commissioning of the field devices.
  • corporate networks may also be connected to public networks, e.g. connected to the Internet.
  • Communication systems are usually wired. In many cases, the power supply of the field devices via the same wire connection. This is referred to as 2-wire devices. If a separate power supply line is provided next to the communication line, this is referred to as 4-wire devices. Here an additional cabling effort for the energy supply is necessary.
  • the field devices provide data that are retrieved from the parent unit. Communication often takes place according to the master-slave or client-server principle.
  • the solar cells must be designed to be correspondingly large or correspondingly large energy stores must be present in the field device in order to provide sufficient energy continuously even in times when little or no solar energy is available.
  • the object of the present invention is to provide a method for operating an autonomous field device of process measurement technology, which does not have the disadvantages mentioned above, which in particular consumes less energy and which is simple and inexpensive to implement.
  • the essential idea of the invention is that the field device is operated predominantly in a power-saving mode, in which the field device is not ready to receive and thus no data exchange with the parent unit is possible.
  • the field device is switched sporadically into an active mode.
  • This active mode is activated at specific communication times agreed in advance between the higher-level unit and the field device. After activation of the field device, proper communication between the field device and the higher-level unit is possible. This method ensures secure communication because both communication partners are aware of the communication times.
  • Synchronization of the timer of the control unit and field device mandatory Since the length of time for the execution of communication tasks can be variable, it makes sense if it is possible for the control unit to terminate the active mode in the field device. This can be done by a corresponding command, which is sent to the field device. The field device should also be able to terminate the active mode. In a simple way, this takes place when the higher-level unit does not access the field device for a longer predetermined period of time. At the communication times, a user would normally want to operate the field device. For this reason it will automatically if that
  • FIG. 1 shows an application with several autonomous field devices of FIG. 1
  • Fig. 1 Base station and 5 field devices at different times.
  • Fig. 1 are two typical applications for autonomous field devices PatXML 5/10 PS0044-WO
  • an autonomous field device F1 radar level gauge
  • a container B1 silica, tank, etc.
  • the field device F1 communicates via a radio link FS1 with a remotely located superordinated unit S1, which serves for process monitoring or process visualization.
  • This unit S1 can also provide information of the field device F1 to further superordinate units S2 and S3.
  • the radio link FS1 may be, for example, a public communications network (GSM / satellite).
  • GSM public communications network
  • the second application has a plurality of field devices F2, F3, F4, F5, F6, which are respectively arranged on respective containers B2, B3, B4, B5, B6.
  • These field devices communicate with a base station B via a second radio link FS2 and together form a wireless radio network FN2.
  • a base station B which can communicate with several field devices, is for example the product Fieldgate of the company Endress + Hauser.
  • the base station B collects the measurement data of the field devices and transmits them to the higher-level unit S1 in the same way as the field device F1, namely via the radio link FS1.
  • the field device F1 is operated in a power saving mode. In this state, the device consumes extremely little energy and can not be addressed by the higher-level unit S1.
  • the field device transitions from the energy-saving mode into an active mode.
  • the superordinate unit S1 transmits a corresponding command to the field device F1 to deactivate the active mode and to activate the energy-saving mode.
  • the field device switches to the energy-saving mode as a precaution when, in the active mode, the higher-level unit S1 does not access the field device F1 over a longer defined period of time.
  • the field device To determine the measured value, the field device must also be in
  • the measured value is transmitted to the higher-level unit S1 at the end of an active phase in a measured-value transmission phase. Since the field device F1 communicates with the higher-level unit S1 at these times, the communication times for an operation can also be set at these times.
  • the field device has a timer (timer / calendar), which activates the field device at the desired communication time.
  • the timers in the field device F1 and in the higher-level unit S1 are regularly synchronized.
  • the communication times are agreed between the higher-level unit S1 and the field device F1.
  • an operating program is automatically started on the higher-level unit at the communication times.
  • control unit S1 must propose a later communication time in this case.
  • the essential idea of the second application is that a whole local radio network FN2 consisting of several field devices with radio interface and autonomous power supply is operated mainly in a power saving mode in which the wireless network FN2 including the field devices F2-F6 and base station B is not ready to receive is and thus no data exchange with the higher-level unit S1 is possible.
  • the entire wireless network, including the field devices F2-F6 and base station B is switched sporadically into an active mode.
  • the devices are predominantly in an energy-saving mode. In this energy-saving mode, neither communication nor measured value acquisition is possible.
  • both the base station B and the field devices F2-F6 are in energy-saving mode (shown without hatching).
  • the base station B is arranged to start booting at a time T-x, where T is a specific communication time.
  • the base station B is responsible for setting up and coordinating the radio network FN2 and therefore must be ready for operation x time units before all other network subscribers F2-F6.
  • the base station is in the active state (shown hatched) and awaits the registration of the field devices F2-F6.
  • Base station B now waits until all field devices F2-F6 are ready for operation and have registered as local network nodes of network FN2.
  • the field devices F2-F6 have also set the previously determined communication time T as the next wake-up time and, according to the internal time management, start the boot process at time T.
  • FIG. 4 shows now the base station B as well as the field devices F2 - F6 in the active state (shown hatched).
  • the base station B authenticates the network users F2-F6 and coordinates the now active radio network FN2. Subsequently, a communication between the field devices F2-F6 and the higher-level unit S1 via the radio link FS2 with radio network FN2, base station B and radio link FS1 is possible.
  • the field devices F2-F6 and the base station revert to the energy-saving mode (FIG. 2).

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé pour faire fonctionner un appareil de champ autonome de métrologie des processus qui présente une alimentation de courant interne et qui communique avec une unité supérieure par l'intermédiaire d'une liaison radioélectrique, procédé selon lequel l'appareil de champ F1 fonctionne essentiellement dans un mode économie d'énergie, dans lequel l'appareil de champ F1 ne peut être mis en fonctionnement par l'unité supérieure S1. L'appareil de champ est mis en fonctionnement de manière sporadique en mode actif. Dans cet état, l'unité S1 supérieure peut avoir accès à l'appareil de champ et un échange de données entre l'appareil de champ F1 et l'unité supérieure est possible. La commutation entre le mode économie d'énergie et le mode actif a lieu à des instants de communication convenus à l'avance entre l'unité supérieure S1 et l'appareil de champ F1.
PCT/EP2007/064455 2006-12-28 2007-12-21 Procédé pour faire fonctionner un appareil de champ autonome de métrologie des processus WO2008080898A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006062479.3 2006-12-28
DE200610062479 DE102006062479A1 (de) 2006-12-28 2006-12-28 Verfahren zum Betreiben eines autonomen Feldgerätes der Prozessmesstechnik

Publications (1)

Publication Number Publication Date
WO2008080898A1 true WO2008080898A1 (fr) 2008-07-10

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Application Number Title Priority Date Filing Date
PCT/EP2007/064455 WO2008080898A1 (fr) 2006-12-28 2007-12-21 Procédé pour faire fonctionner un appareil de champ autonome de métrologie des processus

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DE (1) DE102006062479A1 (fr)
WO (1) WO2008080898A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008035756A1 (de) * 2008-07-31 2010-02-04 Robert Bosch Gmbh Vorrichtung und Verfahren zum Reduzieren des Energieverbrauchs einer Maschine oder Anlage
EP2187281B1 (fr) * 2008-11-13 2013-04-17 Siemens Aktiengesellschaft Appareil d'automatisation et son procédé de fonctionnement
EP2708967B1 (fr) * 2012-09-13 2016-04-27 Fabian Sacharowitz Dispositif d'actionnement électrique décentralisé
DE102013215152A1 (de) * 2013-08-01 2015-02-05 Micropatent B.V. Feldgeräteanordnung
DE102014111758A1 (de) * 2014-08-18 2016-02-18 Endress + Hauser Gmbh + Co. Kg Verfahren zum Überprüfen eines Feldgerätes

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4215380A1 (de) * 1992-05-11 1993-11-18 Siemens Ag Verfahren zum Synchronisieren von lokalen Zeitgebern eines Automatisierungssystems
DE10315164A1 (de) * 2003-04-02 2004-10-14 Endress + Hauser Gmbh + Co. Kg Verfahren zur näherungsweisen Bestimmung eines Messzeitpunktes und entsprechende Vorrichtung
WO2005103851A1 (fr) * 2004-04-23 2005-11-03 Endress+Hauser Process Solutions Ag Module radio pour appareils de terrain utilises en automatisation
US20060053218A1 (en) * 2002-03-06 2006-03-09 Werner Thoren Method and device for reducing a dataset consisting of process data to be transmitted
US20060116102A1 (en) * 2004-05-21 2006-06-01 Brown Gregory C Power generation for process devices

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4235187A1 (de) * 1992-10-19 1994-04-21 Metrona Waermemesser Union Einrichtung zum Ablesen von Verbrauchswerten in einem Gebäude anfallender Verbrauchsmengen
DE10213114B4 (de) * 2002-03-23 2006-01-26 Kundo Systemtechnik Gmbh Verfahren zur periodischen Funkübertragung der Messdaten einer Mehrzahl von Messgeräten auf einen gemeinsamen Empfänger

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4215380A1 (de) * 1992-05-11 1993-11-18 Siemens Ag Verfahren zum Synchronisieren von lokalen Zeitgebern eines Automatisierungssystems
US20060053218A1 (en) * 2002-03-06 2006-03-09 Werner Thoren Method and device for reducing a dataset consisting of process data to be transmitted
DE10315164A1 (de) * 2003-04-02 2004-10-14 Endress + Hauser Gmbh + Co. Kg Verfahren zur näherungsweisen Bestimmung eines Messzeitpunktes und entsprechende Vorrichtung
WO2005103851A1 (fr) * 2004-04-23 2005-11-03 Endress+Hauser Process Solutions Ag Module radio pour appareils de terrain utilises en automatisation
US20060116102A1 (en) * 2004-05-21 2006-06-01 Brown Gregory C Power generation for process devices

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Publication number Publication date
DE102006062479A1 (de) 2008-07-03

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