EP3230699A1 - Module supplémentaire pour un appareil de terrain de la technique des processus et/ou de l'automatisation - Google Patents

Module supplémentaire pour un appareil de terrain de la technique des processus et/ou de l'automatisation

Info

Publication number
EP3230699A1
EP3230699A1 EP15790116.6A EP15790116A EP3230699A1 EP 3230699 A1 EP3230699 A1 EP 3230699A1 EP 15790116 A EP15790116 A EP 15790116A EP 3230699 A1 EP3230699 A1 EP 3230699A1
Authority
EP
European Patent Office
Prior art keywords
field device
unit
display
optical
additional module
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
EP15790116.6A
Other languages
German (de)
English (en)
Inventor
Benjamin MONSE
Kaj Uppenkamp
Wolfgang Brutschin
Izabella SANDOR
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.)
Endress and Hauser SE and Co KG
Original Assignee
Endress and Hauser SE and Co 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 Endress and Hauser SE and Co KG filed Critical Endress and Hauser SE and Co KG
Publication of EP3230699A1 publication Critical patent/EP3230699A1/fr
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
    • G01F15/06—Indicating or recording devices
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • 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
    • G01D13/00—Component parts of indicators for measuring arrangements not specially adapted for a specific variable
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/2092—Details of a display terminals using a flat panel, the details relating to the control arrangement of the display terminal and to the interfaces thereto
    • G09G3/2096—Details of the interface to the display terminal specific for a flat panel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2370/00—Aspects of data communication
    • G09G2370/10—Use of a protocol of communication by packets in interfaces along the display data pipeline
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2370/00—Aspects of data communication
    • G09G2370/16—Use of wireless transmission of display information
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2370/00—Aspects of data communication
    • G09G2370/18—Use of optical transmission of display information

Definitions

  • the invention relates to an additional module for a field device of process and / or automation technology to at least display information about a switching state, and / or a parameter and / or diagnostic information and / or to transmit to an external unit.
  • a field device typically comprises at least one at least partially and at least temporarily come into contact with the process sensor unit and an electronic unit, which serves for example the signal detection, evaluation and / or - supply.
  • field devices are in principle all measuring devices that are used close to the process and that provide or process process-relevant information, including remote I / Os, radio adapters or generally electronic components, which are arranged at the field level.
  • remote I / Os remote I / Os
  • radio adapters or generally electronic components which are arranged at the field level.
  • a variety of such field devices is manufactured and sold by the company Endress + Hauser.
  • Flowmeters are especially Coriolis, ultrasonic, vortex, thermal and / or magnetic inductive flowmeters.
  • Level gauges are in particular microwave level gauges, ultrasonic level gauges, time domain reflectometric level gauges (TDR), radiometric level gauges, capacitive level gauges, conductive level gauges and / or temperature-sensitive level gauges.
  • TDR time domain reflectometric level gauges
  • Pressure gauges are in particular absolute, relative or differential pressure devices.
  • Temperature measuring devices are in particular measuring devices with thermocouples and temperature-dependent resistors.
  • Point level measuring devices are in particular vibronic point level measuring devices, ultrasonic point level measuring devices and / or capacitive or conductive
  • Analytical measuring devices are in particular pH sensors, conductivity sensors, oxygen and active oxygen sensors, (spectro) -photometric sensors, and / or
  • ion-selective electrodes To display information, operating states, measured values, device parameters or the like, field devices often have at least one display unit, such as a display, or at least one optical and / or acoustic display element.
  • An optical display element is a light-emitting element, in particular an LED.
  • An acoustic element is for example a beeper.
  • optical or acoustic display elements are advantageous in terms of the required space, the power consumption of the respective field device, and / or when using the field device in a potentially explosive environment such as encapsulated field devices that meet the IP69K standard from.
  • the bandwidth of the display options is limited to switching states, operating states and / or the presence of malfunctions or malfunctions.
  • DE102006016381 A1 describes, for example, a field device with a
  • Display unit comprising at least one LED.
  • DE102008037194A1 describes a field device with a housing, within which a display element is arranged, which comprises for example at least one LED, for displaying the function or a state of a wireless communication unit.
  • Display element indicates the operational readiness of the field device, wherein a second and a third display elements signal two antivalent switching outputs of the field device, wherein a fourth display element is a malfunction or malfunction of
  • Display element is activated.
  • Corresponding optical display elements are for example also frequently used for vibronic fill level measuring devices, as manufactured and sold by the applicant under the name LIQUIPHANT and SOLIPHANT, and by means of which a predetermined fill level is detected.
  • Such field devices often referred to as a level switch, are preferably used as dry running protection for pumps or as overfill protection.
  • the respective switching state is output via a switching output of the field device configured according to the type of application. This is also referred to as MIN MAX safety.
  • the on-site information about the respective switching output or switching state of the limit level switch is usually very important for a customer, so that often display elements are integrated with at least one light-emitting element in the field device, which can visualize at least the respective switching state and / or the operating voltage.
  • 1020131 13438.6 describes a display module with a deflecting body, for example a light guide, which deflects the light emerging from at least one light-emitting element.
  • the object of the present invention is to expand the functionality of optical display elements in field devices.
  • an additional module for a field device of process and / or automation technology at least comprising a module housing and at least partially disposed within the module housing an optical receiving unit, a module electronics unit, and a display / transmission unit, wherein the optical receiving unit is configured to wirelessly receive at least a first optical signal from the field device, and to convert the at least one first optical signal into at least one first electrical signal, wherein the module electronics unit is electrically connected to the receiving unit and to the display / Transmission unit is connected, wherein the module electronics unit is configured to extract from the at least one first electrical signal at least one field device information, and to pass to the display / transmission unit, and wherein the display / transmission unit is configured to to display the at least one piece of information and / or to transmit it to at least one external unit.
  • field information may include information about a Switching state, and / or an operating state and / or a parameter and / or a diagnostic information.
  • the parameter may be a physical or chemical parameter of the medium and / or the process
  • the resonant frequency of a vibratory unit In the case of a capacitive level gauge, it may, for example, be the capacitance and / or the dimensions of the probe or additional electrode. The individual parameters and sizes differ depending on the field device used.
  • the field device information to be transmitted may also be a measured value. Diagnostic information provides information about a malfunction and / or malfunction within the field device. Again, with the respective diagnostic information between the different types of field devices to
  • the means of the at least one first optical and at least one first electrical signal are always information which is provided within the field device.
  • the additional module can be used for all field devices which display an optical signal, in particular therefore for field devices with at least one optical display element, in particular with a display element in the form of a
  • the receiving unit can in this case be present on the respective display element present in the field device and on the respectively by means of the
  • Intensity and / or wavelength can be adjusted.
  • the functionality of a field device can advantageously be extended by the use of an additional module according to the invention.
  • the at least one first optical signal from the field device can either only the anyway by means of the respective Display element displayed field device information, as described above, or moreover contain further field device information, in particular those which are not accessible by means of a simple optical display element containing. These can then be displayed by the display / transmission unit.
  • the field device can also be redesigned without the electronics unit
  • the display transmission unit is configured to transmit information to an external unit.
  • the external unit may be, for example, a field level device or a central plant control unit.
  • the module housing has a plug-in connection unit, by means of which the additional module is detachably fastened on or in the field device.
  • the receiving unit has a photodetector, which is designed to receive at least one first optical signal from the
  • the photodetector is adapted to the respective display element within the field device, or configured to the first optical signal from
  • Field device to detect is, for example, the luminous intensity of the LED, the transmission speed of the first optical signal, which depends inter alia on the particular transmission method chosen, and also the distance between the photodetector and the display element within the field device.
  • the display / transmission unit has an LED, an RGB LED, or a display.
  • the display / transmission unit merely performs the function of another display unit.
  • the display / transmission unit may comprise an LED.
  • the display functionality is to be extended by the transmission of further field device information which can not be displayed by the optical display element, for example, an RGB LED or even a display is more suitable since such display elements have a larger number
  • different device information can represent different.
  • the display / transmission unit in the case of a Bluetooth or
  • the at least one information can be transmitted to at least one external unit.
  • a radio interface may, for example, be a WI_AN module.
  • the display transmission unit also has a display and a transmission interface at the same time.
  • the module electronics unit comprises at least one arithmetic unit.
  • the at least one first electrical signal which contains the at least one information of the field device, evaluated and forwarded processed accordingly.
  • the at least one arithmetic unit must be able to execute certain methods or protocols.
  • the at least one arithmetic unit is designed to execute a protocol, in particular an IrDA- or UART-coded protocol, in order to extract the at least one information from the at least one first optical signal of the field device. This is particularly suitable if the at least one device information is modulated onto the at least one optical signal.
  • a preferred embodiment includes that the additional module is designed for bidirectional communication with the field device.
  • the additional module is designed for bidirectional communication with the field device.
  • the additional module For transmission of the at least one first and at least one second optical signal different transmission modes can be selected. If the additional module has to be designed only to display the at least one piece of information, then suffices a pure forwarding of the optical signal of the display element. If further information is to be transmitted, a targeted transmission method must be selected by means of which the at least one field device information can be impressed on the at least one first and possibly the at least one second optical signal. For this purpose, various possibilities are conceivable.
  • the invention is further achieved by a field device of the process and / or
  • Automation technology comprising at least one sensor module and a field device electronics with an optical display unit, and with an additional module according to the invention, wherein the field device electronics is configured to the optical
  • Display unit to apply at least a second electrical signal, which at least one second electrical signal, the at least one
  • Field device information includes, wherein the optical display unit is adapted to emit a first optical signal containing the at least one field device information, and wherein the additional module is arranged such that the
  • the optical display unit of the field device may be, for example, a display or an optical display element, in particular a light-emitting element, in particular an LED.
  • the LED is preferably designed to display at least one switching state, operating state and / or information about a fault and / or a malfunction by means of at least one emitted optical signal of a wavelength corresponding to the visible range of the light.
  • different information can be displayed in different colors. The color green is often used to indicate the operating status, yellow to indicate switching states and red to indicate a malfunction and / or malfunction.
  • the transmission of the at least one field device information takes place by means of a modulation.
  • the optical signal of the optical display element of the field device, the at least one field device information is modulated by the field device electronics.
  • the module electronics unit is then further able to extract the at least one information from the at least one corresponding first electrical signal and to demodulate this signal.
  • other optical transmission methods can also be used.
  • DE 1020121 12160A1 for example, a method for non-visual data transmission by means of a field device with at least one
  • the display element may be configured to visually represent at least one field device information.
  • the non-visual optical signal is preferably transmitted at the same time.
  • the field device would have to be equipped with a display element which is designed for non-visual data transmission, which tends to occur rather rarely.
  • the additional module is releasably secured within the field device electronics, and in particular attached above the optical display unit. The additional module is thus within a housing of the
  • Field device electronics arranged. Preferably, however, it is arranged so that any existing safety requirement regarding the protective provisions for use in a potentially explosive atmosphere remain. Such an arrangement is then particularly compact.
  • the field device electronics has a window, wherein the display transmission unit is arranged facing the window.
  • the display transmission unit has a display, or an LED, this is necessary in order to display the at least one field device information by means of the display / transmission unit.
  • the field device electronics has a field device housing, which allows the use of the field device in a potentially explosive environment.
  • optical display unit in a preferred
  • Embodiment at least one light-emitting optical display element, in particular an LED for displaying at least one light signal, in particular one
  • the optical display unit displays at least one switching state and / or an operating state and / or a malfunction and / or malfunction of the field device by means of the light signal, in particular the color signal.
  • the field device has a field device receiving unit, in particular a further photodetector, for receiving the at least one second optical signal from the additional module.
  • a field device receiving unit in particular a further photodetector
  • FIG. 1 is a schematic diagram of a prior art level gauge comprising an optical display element
  • FIG. 3 shows the arrangement of an additional module according to the invention within a field device.
  • FIG. 4 shows a typical transmission signal which is evaluated by means of a suitable protocol within the module electronics unit.
  • Fig. 5 is a block diagram of a receiving unit in the form of a photodetector
  • Fig. 6 shows the arrangement of an additional module according to the invention within a
  • Field device suitable for bidirectional communication.
  • FIG. 1 shows a schematic sketch of a field device 1.
  • this is a vibronic level gauge, also level limit switch.
  • the sensor unit 2 comprises a mechanically oscillatable unit 3 in the form of a
  • Tuning fork It may be in a generic field device in the
  • the sensor unit 2 Via a neck tube 3a, the sensor unit 2 is electrically connected to a field device electronics 4 arranged in an encapsulated field device housing 5.
  • the measured value processing and control of the field device 1 is taken over by a central control unit 6.
  • This also controls by means of a second electrical signal 8, an optical display unit 9, within which three light-emitting optical display elements 9a are arranged in the form of LEDs.
  • the field device electronics 4 in the example shown here on an output unit 7, which can be used for example for parameterization of the field device 1.
  • the output unit is an optional component.
  • FIG. 1 shows a schematic sketch of an additional module 10 according to the invention.
  • a first optical signal 12 strikes a receiving unit 13 of the additional module, which may be provided, for example, by a photodetector.
  • the receiving unit 13 is arranged together with a module electronics unit 15 and a display / transmission unit 17 in a housing.
  • the at least one first optical signal 12 is converted into at least one first electrical signal 14 by means of the receiving unit 13
  • the at least one first electrical signal is evaluated, which extracts at least one field device information, and transferred to the display / transmission unit.
  • the display / transmission unit 17 can display the at least one field device information or transmit it to an external unit 18.
  • a particularly preferred embodiment includes that the additional module 10 can be integrated into an existing field device electronics 4, as shown in Fig. 3. It goes without saying that the housing dimensions of the field device housing 5 then have to be adjusted accordingly. Furthermore, it is expedient to make the cover 19 of the field device housing 5 translucent, that is to say in particular including a window. This window should each be designed so that it is suitable for the
  • Wavelength of the at least one first optical signal 12 and optionally also for that of the at least one second optical signal 35 is permeable.
  • the sensor unit 2 of the field device 1 transmits a signal representing a measured value to the field device electronics 4, which in a first step a
  • Measurement evaluation 20 makes. Often the determined measured value is evaluated by means of a unit for measured value evaluation 21 in order to determine, for example, how a regulation of the transmission signal by means of a switching unit for controlling the measuring instrument 23 is to be carried out.
  • the field device electronics 4 communicate with an optical display unit 8 to display at least one field device information by means of at least one optical display element. According to the invention, either only the information displayed anyway by means of the optical display element 9 is displayed. Or the optical display element is impressed at least one further field device information, which is contained in the at least one first optical signal 12 of the optical display unit 9 of the field device. The at least one first optical signal 12 is then received by the above the field device electronics 4, but within the field device housing 5, arranged additional module 10 and as explained in Fig. 2, further processed.
  • FIG. 4 shows by way of example a transmission frame for transmitting the at least one
  • a start bit 25 is followed by an identifier 26 and optional (dashed boxes) the specification of a command and the length.
  • the receiving unit 13 of the additional module 10 may comprise, for example, a photodetector 30.
  • Fig. 5 is an example of a block diagram of a possible photodetector 30.
  • Receiving unit 13 shown in the form of a photodetector. In the choice of
  • Photodetector should be based on the light intensity of the optical display element 9a of the
  • the at least one first optical signal 12 impinges on a photodetector 30.
  • the detected at least one optical signal 12 which is converted into at least a first electrical signal by means of the photodetector 30, is amplified by means of an amplifier 31 and also passes through a comparator 32.
  • Suitable photodetectors 30 are, for example, phototransistors or photodiodes, which are sensitive to the wavelength of the at least one first optical signal.
  • the amplifier 31 and the comparator 32 can either be individually integrated and tuned, but also combined variants, in which both components are already optimized to each other, are conceivable, as indicated by the box bordered by dashed lines.
  • FIG. 6 A further embodiment of the present invention is the subject of FIG. 6. As in FIG. 3, an arrangement of an additional module 10 according to the invention within a field device 1 is shown. In contrast to the embodiment according to Figure 3, however, the variant shown in Fig. 6 is suitable for bidirectional communication between the
  • Field device 1 and the additional module 10 On already explained reference numerals will not be discussed again below.
  • the additional module 10 has an optical Transmission unit 34, by means of which at least one second optical signal 35 containing at least one information, for example, a set of field device parameters or the like contains.
  • the field device 1 could for example be parameterized via the additional module 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Optical Communication System (AREA)

Abstract

L'invention concerne un module supplémentaire (10), destiné à un appareil de terrain (1) de la technique des processus et/ou de l'automatisation, qui comprend au moins un boîtier (11) et, au moins partiellement à l'intérieur du boîtier (11), une unité de réception optique (13), une unité électronique de module (15) et une unité d'affichage/de transmission (17). L'unité de réception optique (13) est configurée pour recevoir sans fil au moins un premier signal optique (12) de l'appareil de terrain (1) et pour convertir l'au moins un premier signal optique (12) en au moins un premier signal électrique (14), l'unité électronique de module (15) est reliée électriquement à l'unité de réception (13) et à l'unité d'affichage/de transmission (17), l'unité électronique de module (15) est configurée pour extraire de l'au moins un premier signal électrique (14) au moins une information d'appareil de terrain et la transférer à l'unité d'affichage/de transmission (17) et l'unité d'affichage/de transmission (17) est configurée pour afficher l'au moins une information et/ou la transmettre à au moins une unité externe (18).
EP15790116.6A 2014-12-11 2015-11-03 Module supplémentaire pour un appareil de terrain de la technique des processus et/ou de l'automatisation Ceased EP3230699A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014118394.0A DE102014118394A1 (de) 2014-12-11 2014-12-11 Zusatzmodul für ein Feldgerät der Prozess- und/oder Automatisierungstechnik
PCT/EP2015/075540 WO2016091480A1 (fr) 2014-12-11 2015-11-03 Module supplémentaire pour un appareil de terrain de la technique des processus et/ou de l'automatisation

Publications (1)

Publication Number Publication Date
EP3230699A1 true EP3230699A1 (fr) 2017-10-18

Family

ID=54396883

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15790116.6A Ceased EP3230699A1 (fr) 2014-12-11 2015-11-03 Module supplémentaire pour un appareil de terrain de la technique des processus et/ou de l'automatisation

Country Status (5)

Country Link
US (1) US10692421B2 (fr)
EP (1) EP3230699A1 (fr)
CN (1) CN107003166A (fr)
DE (1) DE102014118394A1 (fr)
WO (1) WO2016091480A1 (fr)

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CN107003166A (zh) 2017-08-01
DE102014118394A1 (de) 2016-06-16
US10692421B2 (en) 2020-06-23
WO2016091480A1 (fr) 2016-06-16
US20180350294A1 (en) 2018-12-06

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