EP1664945A2 - Vorrichtung zur übertragung von daten sowie tragbares elektronisches gerät und feldgerät für eine derartige vorrichtung - Google Patents

Vorrichtung zur übertragung von daten sowie tragbares elektronisches gerät und feldgerät für eine derartige vorrichtung

Info

Publication number
EP1664945A2
EP1664945A2 EP04765596A EP04765596A EP1664945A2 EP 1664945 A2 EP1664945 A2 EP 1664945A2 EP 04765596 A EP04765596 A EP 04765596A EP 04765596 A EP04765596 A EP 04765596A EP 1664945 A2 EP1664945 A2 EP 1664945A2
Authority
EP
European Patent Office
Prior art keywords
field device
data
coupling piece
portable electronic
connection
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
EP04765596A
Other languages
German (de)
English (en)
French (fr)
Inventor
Alf Zips
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of EP1664945A2 publication Critical patent/EP1664945A2/de
Ceased legal-status Critical Current

Links

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
    • G05B15/00—Systems controlled by a computer
    • G05B15/02—Systems controlled by a computer electric

Definitions

  • the invention relates to a device for transmitting data between a portable electronic device and a field device according to the preamble of claim 1 and a portable electronic device and a field device according to claim 7 or claim 8 for such a device.
  • Field devices for example for use as measuring transducers and / or actuators in process engineering systems, are generally known. They can be used to record or influence process variables. In order for field devices of this type to work in the desired manner at their place of use, a parameterization often has to be carried out, in which, for example, the start and end values of the measurement range are specified for a transmitter. If the field device itself is provided with an input keyboard and a display, the parameterization can be carried out in an on-site operation, for example by means of mechanical keys or infrared reflection keys. Since such operations are carried out on field devices especially during commissioning and rarely occur in later operation, equipping the field device with an input keyboard and a display means a comparatively high outlay.
  • the parameterization of the field device can thus be carried out by the operating device. It is possible to operate the field device on site, but it will be partially provided that the process values are transmitted in normal operation with an analog current signal. If a field device with a different fieldbus connection is used, the HMI device cannot be used.
  • a distributed control system with field devices is known from EP 0 788 627, which are connected to a wired network. So that the field devices do not have to be parameterized over the network, the field devices also have a wireless one
  • the wireless connection can be implemented, for example, by a radio, light or sound transmission link.
  • the energy required for field devices is supplied via the wired network connection.
  • no additional cables are required to supply the field device with operating energy.
  • the disadvantage here is that the additional wireless interface increases the energy consumption of the field device and thus less energy is available for the actual function of the field device, since the amount of energy that can be extracted from the network is usually very limited.
  • EP 0 929 948 B1 discloses a modular electronic control for use in a process plant, in which operating energy and data are transmitted wirelessly between the individual modules.
  • the invention has for its object to provide a device for transmitting data between a portable electronic device and a field device, via which the data can be transmitted wirelessly and by which the energy requirement of the field device for an operating power supply during the transmission of data is minimal at most is increased compared to its energy requirement in normal operation.
  • WEI Other tasks are to provide a portable electronic device and a field device for such a device.
  • the new device of the type mentioned at the outset has the features specified in the characterizing part of claim 1.
  • Advantageous further developments are described in the dependent claims.
  • claim 7 is a portable electronic device
  • claim 8 is a field device for such a device for transmitting data.
  • the invention has the advantage that it is possible to operate a field device with a portable operating device on site, that is, for example, not from a remote control room. Furthermore, no additional effort, such as opening a housing of the field device or connecting connecting lines to existing communication lines, via which the field device transmits its measured values to a higher-level station, is required. Since the power consumption of the field device is not excessively increased by communication with an operating device, the supply of the field device with its amount of energy required for normal operation, for example via a network connection, which is already present, is still sufficient. Since the required operating energy supply is at most slightly increased by the data transmission between the field device and the portable electronic device, this additional interface also means that there is no need for further lines for supplying power to the field device.
  • the field device coupling piece can preferably be arranged on the housing of the field device. This has the advantage that no further cable is required between the field device coupling piece and the field device and that the housing of the field device can be constructed more simply, since the close connection between the cable coupling piece and the field device coupling piece can be achieved, for example, by a wall section of the housing can be realized.
  • a local connection once set up, remains in place without further action by the operator if the cable coupling piece is detachably held on the field device coupling piece. After the cable coupling piece has been attached, it can be held automatically on the field device coupling piece, for example by magnetic adhesive force.
  • the operator has his hands free to operate the portable electronic device.
  • the portable electronic device is designed as an operating device for the field device and is provided with an input keyboard and a display
  • this has the advantage in connection with a field device, the electrical connection of which is designed as a network connection, that no keyboard and display for the field device itself Operation must be provided.
  • Its network connection is sufficient to integrate the field device into a control network of a process engineering system.
  • the instrumentation required for on-site operation of the field device, in particular the input keyboard and display, is thus relocated to the operating device.
  • the effort that has to be carried out for on-site operation which is very rare in relation to the service life of the field device, is reduced overall.
  • a further reduction in the current consumption of the field device in normal operation is possible if a circuit of the field device required for data transmission via the local connection assumes a standby state with lower energy consumption in normal operation, which is only left when a local connection is established and used for data transmission ,
  • the invention is particularly advantageously applicable to field devices that meet the requirements of explosion protection have to. Due to the lack of a plug-in connection with electrical contacts, the effort that would otherwise be required for the intrinsically safe design of an interface is eliminated and no housing cover is necessary above the field device coupling part. In addition, the mechanical or atmospheric stress on the contact elements of the plug connection would be disadvantageous, since field devices are usually intended for use in a harsh industrial environment.
  • Figure 1 is a portable control device and a field device with a device for transmitting data
  • Figure 2 is a schematic diagram of a wireless local area connection.
  • FIG. 1 shows a portable operating device 3 and a field device 2, which are connected to one another via a cable 1 of a device for transmitting data.
  • the field device 2 is, for example, a pressure transmitter that is connected to a
  • Pipe 5 of a process plant is attached.
  • the field device 2 is connected to a network via which it communicates with a higher-level control station 12, for example reports the pressure measurement values to the control station 12, and via which the field device 2 requires the normal operation in the process engineering system Energy is supplied from an operating power supply 13 in the control station 12.
  • the operating device 3 is sent to the field device 2 via the device for transmitting data and the operating energy of the field device 2 required for data transmission connected.
  • the operating device 3 has a keyboard 7 and a display 8, by means of which an operator can carry out inputs and receive outputs from the field device 2. No such elaborate controls are required on the field device 2.
  • the device for transmitting data has a cable 1, which is plugged at one end with a plug 9 into a corresponding socket 10 of the operating device.
  • An electrical connection between cable 1 and operating device 3 and an optical connection for data transmission are thus established for transmitting the operating energy of field device 2 required for data transmission.
  • a circuit suitable for operating the interface is provided in the operating device 3.
  • the cable 1 is provided at its other end with a cable coupling piece 4 which can be connected to a corresponding field device coupling piece 11 in order to establish a wireless local connection. You can use this close connection between the operator panel
  • Figure 2 shows the basic structure of a wireless local connection. This is done by inserting the cable coupling piece
  • a field device coupling piece 11 which is designed to be positive.
  • the state shortly before the cable coupling piece 4 is fully inserted is shown in FIG. Because the close connection. is wireless, no electrical contacts are required and the field device coupling piece 11 can be formed by a section of a housing wall 20 of the field device 2.
  • the wall 20 is offset in this area towards the interior of the housing. In the central area of this offset section, a window 21 is provided, through which optical signals an optical transmit / receive device 22 of the field device
  • the transmission of the operating energy which is necessary for supplying circuit parts 24 of the field device 2 involved in the data transmission, takes place by means of two inductive transmitters 25 and 26, one coil each in the cable coupling piece 4 and a second coil in the field device coupling piece 11.
  • the circuit 24 of the field device 2 required for data transmission via the local connection is put into an active state when a local connection is established and when the required operating energy is supplied via the local connection so that data can be transmitted.
  • the circuit 24 is in a standby state in which it only requires a very low operating energy. This ensures that the power consumption of the field device 2, with which it loads the network of a control system for the process engineering system, through the transfer of data between the operating device
  • the cable coupling part 4 is detachably held by a rotationally symmetrical ring magnet 27.
  • An interface controller 28 can be designed for communication according to any protocol. However, a widely used protocol, for example according to a PROFIBUS or HART standard, is preferably used.
  • FIG. 2 The exemplary construction of a wireless local connection shown in FIG. 2 clearly shows that this which is advantageous when used in potentially explosive areas, since no housing cover or the like has to be opened in order to connect the cable coupling part 4 to the field device coupling part 11. In addition, there are no fault-prone electrical contacts in the wireless local area connection.
  • this can take place in the same physical way as the energy transmission, for example when using different frequency bands for data and energy transmission.
  • capacitive data and / or energy transmission is possible.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Selective Calling Equipment (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Input From Keyboards Or The Like (AREA)
  • Transceivers (AREA)
  • Near-Field Transmission Systems (AREA)
EP04765596A 2003-09-25 2004-09-24 Vorrichtung zur übertragung von daten sowie tragbares elektronisches gerät und feldgerät für eine derartige vorrichtung Ceased EP1664945A2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10344575A DE10344575A1 (de) 2003-09-25 2003-09-25 Vorrichtung zur Übertragung von Daten sowie tragbares elektronisches Gerät und Feldgerät für eine derartige Vorrichtung
PCT/EP2004/010758 WO2005031477A2 (de) 2003-09-25 2004-09-24 Vorrichtung zur übertragung von daten sowie tragbares elektronisches gerät und feldgerät für eine derartige vorrichtung

Publications (1)

Publication Number Publication Date
EP1664945A2 true EP1664945A2 (de) 2006-06-07

Family

ID=34384283

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04765596A Ceased EP1664945A2 (de) 2003-09-25 2004-09-24 Vorrichtung zur übertragung von daten sowie tragbares elektronisches gerät und feldgerät für eine derartige vorrichtung

Country Status (5)

Country Link
US (1) US7620463B2 (zh)
EP (1) EP1664945A2 (zh)
CN (1) CN100474182C (zh)
DE (1) DE10344575A1 (zh)
WO (1) WO2005031477A2 (zh)

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Also Published As

Publication number Publication date
DE10344575A1 (de) 2005-04-28
CN1871560A (zh) 2006-11-29
US7620463B2 (en) 2009-11-17
CN100474182C (zh) 2009-04-01
WO2005031477A2 (de) 2005-04-07
US20070004168A1 (en) 2007-01-04
WO2005031477A3 (de) 2005-09-15

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