WO2012052207A1 - Arrangement comprenant une première et une deuxième unité radioélectrique ainsi qu'un appareil de terrain et procédé pour faire fonctionner ceux-ci - Google Patents

Arrangement comprenant une première et une deuxième unité radioélectrique ainsi qu'un appareil de terrain et procédé pour faire fonctionner ceux-ci Download PDF

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Publication number
WO2012052207A1
WO2012052207A1 PCT/EP2011/064662 EP2011064662W WO2012052207A1 WO 2012052207 A1 WO2012052207 A1 WO 2012052207A1 EP 2011064662 W EP2011064662 W EP 2011064662W WO 2012052207 A1 WO2012052207 A1 WO 2012052207A1
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WO
WIPO (PCT)
Prior art keywords
radio unit
radio
current loop
field device
current
Prior art date
Application number
PCT/EP2011/064662
Other languages
German (de)
English (en)
Inventor
Christian Seiler
Marc Fiedler
Stefan Probst
Uwe Mannbar
Werner Thoren
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 WO2012052207A1 publication Critical patent/WO2012052207A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/12—Arrangements for remote connection or disconnection of substations or of equipment thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks
    • H04L2012/4026—Bus for use in automation systems
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/50—Reducing energy consumption in communication networks in wire-line communication networks, e.g. low power modes or reduced link rate

Definitions

  • the invention relates to an arrangement comprising a first and a second radio unit and a field device.
  • the invention also relates to a first and a second radio unit and a radio adapter for use in such an arrangement.
  • the invention relates to a method for operating the arrangement.
  • radio unit field devices are, for example, from DE 102007045884 A1, DE 102007043328 A1, DE
  • the radio unit of such field devices is based, for example, on the IEEE 802.1 1 b / g (WLAN) standard and as a result of the absorption capacity of the environment for the
  • Radio transmission used radiation a certain range.
  • this range is, for example, up to about 150 m.
  • the IEEE 802.1 1 b / g standard like the Bluetooth standard, is to be attributed to wireless local transmission, while transmission standards such as GSM, GPRS and UMTS are to be attributed to wireless remote transmission, since they can be communicated worldwide, in particular.
  • transmission standards such as GSM, GPRS and UMTS are to be attributed to wireless remote transmission, since they can be communicated worldwide, in particular.
  • Equip energy source which serves both energy source for supplying the radio module and the connected field device with energy. Furthermore, from o.g. Publications have become known to provide corresponding energy-saving operating modes, so that the
  • Application number 102009055186.7 known, which have both a primary and a secondary radio interface, which primary and secondary radio interface have different functionalities and / or serve different purposes.
  • the field devices there have a number of, in particular hardware-different, radio interfaces on the field device whose operation requires additional resources. It is an object of the invention to provide a field device of the process automation technology, both the operation of a first, in particular the wireless Nahübertragung serving, radio unit as well as by a second, in particular the wireless remote transmission serving, radio unit accessible.
  • the object is achieved by an arrangement in which the first radio unit is connected to a current loop between the field device and the second radio unit, wherein the first radio unit, a first radio interface and the second radio unit, a second
  • Radio interface and wherein the first radio interface in particular for wireless Nahübertragung of signals and the second radio interface in particular for wireless remote transmission of signals, wherein the second radio unit has a power source, by means of which energy source, a current in the current loop is adjustable, wherein in the Current set current at least serves to operate the field device, and wherein the first radio unit and the second radio unit are used for communication with the field device via the current loop.
  • Radio adapter exists, for example, to the wired interface of the field device
  • the first radio unit preferably in parallel, can be connected to the current loop by the first radio unit, for example, to the current loop via
  • Communication interface is then connected according to an embodiment of the proposed invention to the current loop, to which the first and second radio unit are connected. If necessary, the signals received by the first radio unit or by the second radio unit by means of the first and second radio interface can be converted, that is to say the data can be converted between the different protocols used and transmitted to the field device via the current loop.
  • the first and the second radio interface can be converted, that is to say the data can be converted between the different protocols used and transmitted to the field device via the current loop.
  • Radio interface Send and / or receive data in the form of signals according to different transmission standards.
  • signals transmitted by the field device via the current loop can be converted by the first and / or second radio unit and, for example, sent to a higher-order unit via the first or second radio interface.
  • the field device thus continues to communicate directly only via its wired
  • the first radio unit serve for near transmission and the second radio unit for remote transmission of signals or data.
  • the field device or the first radio interface can also be supplied and / or operated via a transmission line separate from the current loop by means of energy, in particular from the energy source of the second radio unit.
  • the first radio unit which is connected to the current loop between the field device and the second radio unit, has no permanent power itself
  • the first radio unit can also be operated at least temporarily, for example, with energy removed from the current loop. In particular, we operated the first radio only with energy removed from the current loop.
  • the current set in the current loop can be provided for the purpose of supplying power to the field device and / or the first radio unit (exclusively) from the energy source of the second radio unit.
  • the field device connected via the current loop to the second radio unit does not have its own energy source or other energy supply and is supplied exclusively with energy removed from the current loop.
  • the field device can also be supplied and / or operated via a transmission line separate from the current loop by means of energy, in particular from the energy source of the second radio unit.
  • the energy source of the second radio unit may be, for example, a limited energy source, which thus has only a certain amount of energy - in the sense of a battery.
  • the first and second radio units may also be, as mentioned, mutually redundant radio units, i. to radio units using the same transmission standard for wireless communication act.
  • a specific transmission standard can include both hardware-based configurations and the use of specific protocols for data exchange.
  • the first radio unit is connected to the current loop between the field device and the second radio unit.
  • the arrangement consists in this case only of the field device and the first and second radio unit, which are connected to each other via the current loop.
  • the field device is thus preferably a self-sufficient field device in which the energy required for operation is supplied by the energy source of the second radio unit, in particular permanently connected to the field device via the current loop.
  • a self-sufficient field device has become known, for example, from the published patent application DE 102008043199 A1.
  • the arrangement consisting of first and second radio unit and field device by means of the power source of the second radio unit can be operated in an advantageous manner.
  • the current loop preferably consists of a two-wire current loop.
  • the current loop can serve both for power supply and / or for communication between the first radio unit and the field device or the second radio unit and the field device.
  • the current loop can also be used for communication between the first and the second radio unit.
  • About the current loop can, for example, a
  • the communication of the field device with a higher-level unit can, for example.
  • Such a higher-level unit may, for example, for process control, process visualization, process monitoring and / or
  • Parameterization of the field device serve. The measured values recorded by the field device or
  • This higher-level unit can, for example, also be used for parameterizing the field device or for diagnostic purposes.
  • the plant operator and / or a service provider of maintenance of a system of process automation technology but it may be necessary to make this information available locally or just in a remote control room.
  • Field devices are often arranged on site but only in hard to reach places in the system.
  • the first radio unit which is used in particular for wireless near transmission, can be used.
  • the energy source in particular if the second radio unit is a wireless remote transmission radio unit, which usually has a higher energy requirement than radio units for wireless local transmission, can be spared and thus the service life of the arrangement, in particular maintenance-free, be extended.
  • the second radio unit may preferably be designed for wireless remote transmission, for example, according to one of the standards UMTS, GPRS, GSM.
  • the first radio unit may then preferably be for wireless local transmission in accordance with one of the standards WLAN or infrared (IEEE 802.15.7), but particularly preferably according to the Bluetooth standard (IEEE 802.15.1).
  • the first radio unit is preferably a low-energy unit, which has a lower power consumption, in particular compared to the second radio unit, ie, the first radio unit preferably has so-called low-power electronics.
  • Such low-power electronics is, for example, characterized by a current consumption of a few ⁇ (microamps), in particular by a current consumption of a maximum of 10 ⁇ (microamps).
  • the first radio unit may be a, in particular passive, unit which at least temporarily does not draw energy from the current loop.
  • At least the second radio interface in a first operating mode, is switched off or in a standby mode, wherein in the first
  • the current in the current loop is further adjustable by means of the power source of the second radio unit, and wherein in the first operating mode, the first radio unit is used for communication with the field device.
  • the power supply of the field device and / or the first radio unit can take place via the current set in the current loop.
  • the current set in the current loop can also be used for communication between the field device and the first radio unit. The communication takes place, for example, via the modulation of the current set in the current loop, so that in the
  • the second radio unit can be operated such that, for example, not only the second radio interface but also at least part of the operating electronics of the second radio unit is switched off or in a standby mode.
  • Standby mode is, for example, characterized in that it has a reduced energy consumption compared to the normal operation in which the second radio unit sends, for example, signals via the second radio interface.
  • the energy for operating the field device and / or the first radio unit can during this first mode of operation, a
  • Embodiment of the invention further be provided by the power source contained in the first radio unit via the current loop.
  • the power supply of the field device and the first radio unit can be done but instead via the current loop or in addition to the current loop via a separate transmission line.
  • only the first radio unit can be used for communication with the field device.
  • the field device is then wireless only via the first radio unit, which is preferably a wireless unit for wireless transmission, operable.
  • the field device can always be operated via an optionally existing on-site operating unit, which is arranged on the field device itself.
  • the first radio unit has an energy store.
  • the energy store can be an accumulator, a battery or a capacitor, in particular a double-layer capacitor, for example a so-called gold cap.
  • This energy store can serve, for example, to supply the first radio unit with energy at least temporarily, in particular during the first operating mode.
  • Energy storage of the first radio unit is preferably a (re) rechargeable energy storage.
  • a unit other than a radio unit which has the proposed energy store and is connected to the current loop. This other unit may, for example, be a display unit.
  • Energy storage can then just as well. For example, cached (measurement or parameter) values are displayed when no current is set in the current loop, or no energy can be removed from the current loop.
  • the values can be about the
  • a memory unit in particular the display unit.
  • the field device may, for example, be switched off or continue to be operated with power from the current loop or otherwise with energy from the energy source of the second radio unit.
  • the energy store is used in the event that the current loop is free of an electric current to supply at least the first radio unit with energy.
  • the first radio unit can be supplied with energy from the energy store when no current in the current loop, in particular by means of the energy source of the second radio unit, is set.
  • the arrangement and in particular the second radio interface in the first mode of operation i. is off or in standby mode.
  • data stored or stored in the first radio unit, in particular measuring or parameter values of the field device, of the first or second radio unit can continue to be retrievable. Since the energy storage can only absorb a limited amount of energy, we the
  • the first radio unit further comprises a circuit which serves to charge the energy store, if necessary, when an electric current set in the current loop exceeds a first predetermined threshold value. Since the field device has a certain current consumption, it can be advantageous to remove the energy required for charging the energy store only in the case of the current loop if sufficient energy is available for operating the field device. This can be specified by a corresponding first threshold value.
  • the first threshold value can be, for example, in the case that the field device is a measuring device.
  • the energy storage When the energy storage is filled, it needs eg no further current drain, for example from the current loop, in order to fill up the energy store.
  • the energy storage is also used to provide the first radio unit with energy when the current set in the current loop falls below a second predetermined threshold.
  • a second threshold value which is identical to the first threshold value, for example, although a current in the current loop is set
  • the power supply of the first radio unit can be at least partially made from the energy store. This can ensure that sufficient energy is transmitted via the current loop to the field device in order, for example, to fully or at least the functionalities of the field device
  • Operation of the first radio unit and the field device is transmitted via the Stormschleife.
  • the circuit in the case that, a current in the current loop is present, serves to charge the energy storage.
  • Circuits which, for example, serve to detect a current value in the current loop and to compare this value with a predetermined value, in particular the first or second threshold value, are known from the prior art. Furthermore, at least the first radio unit can be operated with energy from the energy store just when no current is set in the current loop.
  • the first radio unit is a radio unit for near-transmission of signals in accordance with the Bluetooth standard.
  • the first radio unit is provided, which preferably has just a first radio interface operating in accordance with the Bluetooth standard. Another advantage is that the first radio unit or its first radio interface in the case that the Bluetooth transmission standard is used as low-power, i.
  • Low energy circuit can be designed.
  • the second radio unit or second radio interface to be used for example, is used for wireless remote transmission and therefore has a higher energy consumption.
  • the second radio unit is a radio unit for remote transmission according to the Global System for Mobile Communication standard, GSM standard for short.
  • the first radio unit and / or the second radio unit in particular if a current is set in the current loop, serve for communication with the field device, preferably for making settings on the field device or for interrogating data from the field device via current loop.
  • the communication ie the transmission of data via the current loop, can take place, for example, in accordance with one of the current fieldbus protocols, such as, for example, HART, PROFIBUS, FOUNDATION FIELDBUS, etc. In this case, either a constant current can be fed into the current loop, then to the
  • Communication signals are modulated, or on a variable background current, the communication signals are modulated.
  • a second operating mode in a second operating mode no current is set by means of the energy source of the second radio unit in the current loop and the current loop is substantially free of an electrical current in the second operating mode.
  • the field device then no longer draws any energy from the current loop, that is, in particular has no current consumption from the current loop more. Instead, however, it can also be provided that only a minimum current value is fed into the current loop by the energy source of the second radio unit, which minimum current value serves to maintain a basic function of the field device and / or the first radio unit. The field device can therefore be switched off in the second operating mode or only via
  • the first radio unit is operated in the second operating mode from the energy store of the first radio unit, so that a communication with the first radio unit is possible.
  • the second radio unit is preferably switched off in the second operating mode, so that it has no or only a small energy intake from the energy source.
  • the first radio unit further comprises means for, in the event that the first radio unit receives a first wake-up signal via the first radio interface, transmitting a corresponding second wake-up signal via the current loop, the second wake-up signal for waking the second radio unit from the second operating mode via the current loop is used.
  • the first wake-up signal is, for example, issued by a user via a handheld and received by the first radio unit.
  • the arrangement may, for example, be in the second operating mode, in which, for example, no current is set in the current loop and the first radio unit is operated with energy from the energy store. If the first wake-up signal enters via the first radio interface, a corresponding second wake-up signal is sent via the current loop.
  • the first wake-up signal can be implemented, for example, by means of a modem, or a corresponding stored second wake-up signal can be transmitted via the current loop.
  • the energy required for this can be taken from the energy store of the first radio unit.
  • the second wake-up signal the second radio unit can be woken up and transferred from the second operating mode, for example.
  • a current in the current loop is set or is adjustable.
  • the field device can then be put into operation again or settings or queries can be made by the field device or the second radio unit.
  • This current or current value can then be used to operate the field device, the first radio unit and / or the second radio unit and / or to charge the energy store of the first radio unit.
  • the first and / or the second radio unit are integrated in a single radio adapter.
  • a wireless adapter can therefore be connected to a wired
  • Communication interface of a field device connected and has two radio interfaces. The communication and the energy supply takes place via the
  • a reprogrammable logic module is provided, wherein the logic module is used for operating the first and / or the second radio unit, in particular for operating the first and second radio interface.
  • programs or instructions for controlling or generally for operating the first and / or the second radio unit can be stored in the logic module and / or in an associated memory unit.
  • a single logic device may be used to operate the first radio and the second radio by reprogramming the device as needed.
  • the logic module is, for example, programmed to operate the first radio unit, since the second radio unit is, for example, switched off in this operating mode or its radio interface is not operated. If the second radio interface is put back into operation, the logic module can be programmed with a corresponding program for operating the second radio unit.
  • the logic module is a reconfigurable FPGA. From the prior art, corresponding reconfigurable, i. especially reprogrammable, FPGAs become known.
  • Communication interfaces are not flexible and can only one standard or one Support implementation by means of hardware. For the manufacturers of such field devices, it is also costly to offer different standards / implementations simultaneously in one device, since as a rule several communication modules have to be present in the device at the same time. Standards that would be particularly suitable for the sporadic configuration of a field device, such as Bluetooth, make a field device more expensive, although this interface is used very rarely.
  • the proposed refinement allows a cost-effective implementation of a field device with a flexible radio interface by means of the reconfigurable logic module, without the respective implementations in the form of modules or chipsets having to be present in the device at the same time.
  • the field device is then able to identify existing wireless applications and accordingly offer the activation of the corresponding radio interface to the user.
  • the field device is also able to realize sporadic radio links for on-site diagnostics and configuration on customer request for the time of application, without this radio interface must be permanently available.
  • Radio units are generally built according to the ISO / OSI layer model, with the lowest layers corresponding to the physical interface PHY and the MAC layer with data link and medium access functionalities. Overlying are Network, Transport and Application Layer. PHY and MAC are today implemented in hardware, in the form of modules or chipsets and the layers above usually in software. It will therefore
  • the radio interface reconfigurable logic device in particular FPGA devices, which are able to dynamically implement a variety of PHYs and the information to one of the system, i. the radio unit and / or the field device, such as e.g. Flash to load.
  • FPGA devices which are able to dynamically implement a variety of PHYs and the information to one of the system, i. the radio unit and / or the field device, such as e.g. Flash to load.
  • FPGA field device
  • All necessary data is loaded from the existing storage unit.
  • the reconfiguration of corresponding logic devices can be done in fractions of a second, so that the system is very fast to switch between the different wireless transmission standards.
  • the customer has the option of selecting a standard for the application or the system is able to perform a car detection by alternately switching between the individual wireless transmission standards.
  • a field device is to be configured, for example, via Bluetooth
  • a corresponding signal can be sent via a corresponding operating unit
  • a detection algorithm of the radio unit recognizes the Bluetooth request or, in particular, manually activates the user Bluetooth support in the field device and / or the radio unit, whereupon the current wireless transmission standard removes from the reconfigurable hardware and the corresponding one
  • Bluetooth Stack is loaded from the attached memory unit and remains active for the duration of the configuration.
  • a single hardware field device can support multiple wireless transmission standards.
  • the automatic detection of the wireless transmission standard used is enabled. Thus, only one radio unit is needed.
  • a reconfigurable hardware enables faster switching between wireless transmission standards.
  • the object is further achieved by a first radio unit for use in an arrangement according to one of the embodiments of the arrangement.
  • the object is achieved by a second radio unit for use in an arrangement according to one of the embodiments of the arrangement.
  • the object is achieved by a radio adapter for use in an arrangement according to one of the embodiments.
  • the radio adapter can then, for example, via such
  • reconfigurable logic device which can be reprogrammed depending on the purpose. For example, for wireless configuration by a user on site de
  • Bluetooth or another wireless near-end standard while in normal operation it supports the GSM standard or another wireless remote transmission standard.
  • the object is achieved by a method for operating an arrangement comprising a first and a second radio unit and a field device, wherein the first radio unit is connected to a current loop between the field device and the second radio unit, wherein the first radio unit has a first radio interface and the second radio Radio unit a second
  • Power source has, by means of which power source, a current in the current loop is set, wherein the current set in the current loop is used to operate the field device, and wherein the first radio unit and the second radio unit communicate with the field device via the current loop.
  • Fig. 1 a schematic representation of an embodiment of the proposed invention.
  • a field device F is attached to a tank T, which is intended to monitor and / or determine the fill level of the tank T.
  • a field device F is for this purpose just usually attached at some height to the tank T and not or only with difficulty accessible.
  • an on-site operating unit not shown, of the field device F is made more difficult.
  • Such an on-site operating unit consists, for example, of buttons or corresponding operating elements which are attached to the housing of the field device F.
  • a second radio unit F2 is provided in particular for the remote transmission of measured values and / or other process-relevant data of the field device F2.
  • the transmission of data via the second radio unit F2 is, in particular if this for
  • a first radio unit F1 which uses a wireless transmission standard which is not redundant with respect to the second radio unit F2. Via this first radio unit F1, communication with the field device F can then take place locally, in particular if it is a wireless unit F1 for wireless local transmission.
  • the communication can, for example, by a user by a handheld H with a corresponding radio interface HF for
  • the handheld H has, for example, a display A
  • the measured values of the field device F can then also be displayed locally on the handheld H and read by the user.
  • the proposed arrangement thus consists of the field device F, the first and the second radio unit F1, F2. Furthermore, the handheld H can still serve for operation and / or display.
  • the second radio unit F2 can be woken up via the first radio unit F1 in the event that it is in a standby mode.
  • the arrangement can, for example, have a first and / or a second operating mode, as defined above, in which at least the second radio interface S2 is switched off or in a standby mode and yet a current in the current loop S can be adjusted by means of the energy source E or at no current in the current loop S is set.
  • the second radio unit and / or the field device can be put back into operation and a current in the current loop can be set.
  • the field device F is supplied with the required energy from a power source E accommodated in the second radio unit F2 via the current loop S.
  • a power source E accommodated in the second radio unit F2 via the current loop S.
  • the first radio unit F1 preferably has an energy store G, such as. Goldcaps, via the current loop S and with out of the current loop S.
  • removed energy can be charged.
  • an accumulator can also be used.
  • the first radio unit F1 can furthermore also have an energy-saving standby mode during which it waits for wake-up signals arriving via the first radio interface F1.
  • the operation is in particular the standby mode of the first radio unit F1 independent of the power supply from the current loop S.
  • this standby mode preferably an input circuit, not shown, the first radio unit F1, which input circuit comprises at least the first radio interface S1, supplied with energy so that incoming wake-up signals can be detected.
  • Such a wake-up signal may, for example, be sent from the handheld H to the first radio unit F1, thereby initiating a wake-up procedure.
  • Handheids H can also be used any display and / or operating device.
  • the transmission of the first wake-up signal is shown in FIG. 1 by means of a dashed line between the handheld H and the first radio unit F1.
  • the wake-up procedure comprises sending the first wake-up signal from the handheld H to the first radio unit F1.
  • the first radio unit F1 may have a modem M which triggers signals corresponding to the received first wake-up signal, in particular a second wake-up signal, in the current loop S.
  • the wide wake-up signal is shown in FIG. 1 by a dashed line between the first radio unit and the second radio unit and is transmitted via the current loop S. It can be used to communicate the second
  • This signal transmission via the current loop S then represents the second wake-up signal, which causes the second radio unit F2 to wake up from the first or second standby mode. This can, for example, simply by the detection of a
  • a corresponding detection or a corresponding standby mode can be realized according to the method disclosed in DE 102007048476 A1, namely by operating the corresponding interface to the current loop, not shown, in a clocked manner. So will one
  • the power supply for other electronic units of the second radio unit F2 can be turned on. Furthermore, then by means of the energy source E of the second radio unit F2, a current in the current loop S can be set, which supplies the field device F with energy.
  • the energy storage G of the first radio unit F1 or the modem M integrated therein can be recharged, for this purpose a circuit L in the provided first radio unit, by which the charging of the energy storage can be controlled and / or monitored.
  • the waking of the field device F or the second radio unit F2 is also possible when the second radio unit F2 off or in a
  • Standby mode is. As a result of the fact that wireless signal transmission takes place between the handheld H and the first radio unit F1, it is possible to wake up even if the second radio unit F2 or field device F is difficult to access. In addition, a quick wake-up by a user on site is now possible without having to wait long for an active phase of the second radio unit F2.
  • only one energy source E such as, for example, a battery is required, which may need to be serviced and / or replaced.
  • the first radio unit F1 or its modem M is essentially maintenance-free.
  • the first and second radio units F1, F2 and the first and second radio interface S1, S2 can be integrated into a single device, not shown. So that one current can be set in the current loop S, the second one has
  • Radio unit F2 via a corresponding supply circuit V, which, for example, in the first
  • Operation mode also allows a current in the current loop is set by means of the power source E, when the second radio unit F2 is in a standby mode or the second radio interface S2 is turned off.
  • the communication between handheld H and the first radio unit F1 can be done via the 433Mhz band or the ZigBee standard.
  • the communication between the handheld H and the first radio unit F1 can be used, for example, for on-site monitoring during the filling of the tank T.
  • the communication between handheld H and the first radio unit F1 can be used for the configuration of the field device F and / or the second radio interface F2.

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un arrangement comprenant une première et une deuxième unité radioélectrique (F1, F2) ainsi qu'un appareil de terrain (F), la première unité radioélectrique (F1) étant raccordée à une boucle de courant (S) entre l'appareil de terrain (F) et la deuxième unité radioélectrique (F2), la première unité radioélectrique (F1) présentant une première interface radioélectrique (S1) et la deuxième unité radioélectrique (F2) présentant une deuxième interface radioélectrique (S2), et la première interface radioélectrique (S1) servant notamment à la transmission sans fil de proximité de signaux et la deuxième interface radioélectrique (S2) notamment à la transmission sans fil à distance de signaux, la deuxième unité radioélectrique (F2) disposant d'une source d'énergie (E), source d'énergie (E) au moyen de laquelle un courant peut être réglé dans la boucle de courant (S), le courant réglé dans la boucle de courant (S) servant au moins à faire fonctionner l'appareil de terrain (F), et la première unité radioélectrique (F1) ainsi que la deuxième unité radioélectrique (F2) servant à la communication avec l'appareil de terrain par le biais de la boucle de courant (S).
PCT/EP2011/064662 2010-10-20 2011-08-25 Arrangement comprenant une première et une deuxième unité radioélectrique ainsi qu'un appareil de terrain et procédé pour faire fonctionner ceux-ci WO2012052207A1 (fr)

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DE102010042717.9 2010-10-20
DE102010042717.9A DE102010042717B4 (de) 2010-10-20 2010-10-20 Anordnung umfassend eine erste und eine zweite Funkeinheit sowie ein Feldgerät und ein Verfahren zum Betreiben derselben

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DE102015115275A1 (de) * 2015-09-10 2017-03-16 Endress+Hauser Gmbh+Co. Kg Verfahren zur Energieverwaltung eines Feldgeräts der Prozessautomatisierung
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DE102017127024A1 (de) * 2017-11-16 2019-05-16 Endress+Hauser Conducta Gmbh+Co. Kg Verfahren zur Betreuung zumindest eines Feldgeräts der Prozessautomatisierungstechnik
DE102018120108A1 (de) * 2018-08-17 2020-02-20 Endress+Hauser SE+Co. KG Feldgerät der Automatisierungstechnik
DE102019127291A1 (de) * 2019-10-10 2021-04-15 Schaeffler Technologies AG & Co. KG Vorrichtung sowie Verfahren zum Konnektieren und zum Überwachen von Prozessen einer Produktionsmaschine
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