EP2552178B1 - Appareil d'affichage doté d'un champ d'affichage optique - Google Patents

Appareil d'affichage doté d'un champ d'affichage optique Download PDF

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Publication number
EP2552178B1
EP2552178B1 EP11175552.6A EP11175552A EP2552178B1 EP 2552178 B1 EP2552178 B1 EP 2552178B1 EP 11175552 A EP11175552 A EP 11175552A EP 2552178 B1 EP2552178 B1 EP 2552178B1
Authority
EP
European Patent Office
Prior art keywords
light source
display device
output
activation module
color
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.)
Active
Application number
EP11175552.6A
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German (de)
English (en)
Other versions
EP2552178A1 (fr
Inventor
Michael Mayer
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
Priority to EP11175552.6A priority Critical patent/EP2552178B1/fr
Priority to US13/548,741 priority patent/US8777432B2/en
Priority to CN201210262989.4A priority patent/CN102905446B/zh
Publication of EP2552178A1 publication Critical patent/EP2552178A1/fr
Application granted granted Critical
Publication of EP2552178B1 publication Critical patent/EP2552178B1/fr
Active legal-status Critical Current
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Classifications

    • 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
    • G09G3/34—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 by control of light from an independent source
    • G09G3/3406—Control of illumination source
    • G09G3/3413—Details of control of colour illumination sources
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/20—Controlling the colour of the light
    • H05B45/24—Controlling the colour of the light using electrical feedback from LEDs or from LED modules
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
    • H05B45/52—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits in a parallel array of LEDs
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/20—Responsive to malfunctions or to light source life; for protection
    • H05B47/21—Responsive to malfunctions or to light source life; for protection of two or more light sources connected in parallel
    • H05B47/22—Responsive to malfunctions or to light source life; for protection of two or more light sources connected in parallel with communication between the lamps and a central unit
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/08—Fault-tolerant or redundant circuits, or circuits in which repair of defects is prepared

Definitions

  • the invention relates to a display device with an optical display panel, wherein behind the display panel, a first light source is arranged, which is configured to generate a base color or a mixed color of the primary colors red, green and blue, wherein the first light source is connected to a drive module and the drive module is designed to control the first light source in accordance with the color to be generated.
  • Such display devices are preferably used in automation technology for the automation of industrial processes.
  • the display devices are preferably designed as operating and monitoring devices or HMI devices.
  • the display devices can be designed as key panel or PushButton panels.
  • the key panels or PushButton panels usually have illuminated pushbuttons for machine operation. Since these panels are preferably designed for direct machine operation, they are preferably implemented via a field bus, such as a fieldbus. a Profibus or a Profinet connected to a programmable logic controller.
  • a field bus such as a fieldbus.
  • a Profibus or a Profinet connected to a programmable logic controller.
  • such display devices are used for passing a machine status in the form of color information and for information recording in the form of pressed or keyed keys of the display device.
  • the five colors red / green / blue / yellow / white can preferably be displayed on account of an inserted RGB LED.
  • Yellow and white represent mixed colors. Yellow is created by red and green, white is created by red and green and blue.
  • the color information to be reproduced is falsified. The user or one Machine operator could then misinterpret the machine status.
  • the color information yellow is interpreted as an abnormal state, see also the standard IEC / EN 60204-1.
  • each light source consists of a red, a green and a blue LED and mixes white light from this. If, by decreasing the amount of light of an LED in a cell, the mixed light gets a color cast, this is compensated by appropriately driving the other LEDs of the cell. If the decrease in the amount of light of an LED of a cell reaches a limit value, no further compensation takes place.
  • the invention is based on the object to provide a display device for displaying color information, which increases the safety in automation technology.
  • a second light source is arranged behind the display panel, which is also configured to produce a base color or a mixed color of the primary colors red, green and blue, wherein the second light source with the drive module in Connection is and the drive module is configured to control the second light source according to the color of the first light source to be generated, wherein a monitoring means is provided, which is configured to detect a fault or a defect on one of the two light sources and then turn off the faulty light source ,
  • one of the RGB light sources for example the light source component for the red color
  • fails the entire color information is corrupted.
  • a new mixed color would result because one light source is still lit yellow and the other light source is illuminated by the red failure green, this new mixed color, but strongly influenced by green.
  • green is again interpreted in automation technology as a normal state.
  • this error is detected and then the faulty light source is switched off. This ensures the reproduction of the actually relevant color information, preferably yellow.
  • the drive module for the first light source has a first output, a second output and a third output
  • for the second light source has a fourth output, a fifth output and a sixth output.
  • Three outputs are thus available for each of the two redundantly connected light sources.
  • each output controls a color component namely the first output the color component red, the second output the color component green and the third output the color component blue. The same applies to the fourth to sixth output of the second light source.
  • the drive module further comprises a means for detecting a short circuit and / or a means for detecting a wire break with respect to the light sources.
  • control module has a reporting means, which is configured to report the detected error to a higher-level block.
  • the reporting means is connected to a control module and the control module with the reporting means form the monitoring means.
  • the display device has a fieldbus interface for connection to a programmable logic controller.
  • the control module is preferably connected to the fieldbus interface in order to forward an error message to a programmable logic controller.
  • the display device may have a push-button switch which comprises the display field.
  • the light sources are each configured as an RGB LED.
  • FIG. 1 the schematic diagram of a display device 1 with a control component 51, a monitoring component 52 and a redundancy component 53 is shown.
  • the redundancy component 53 essentially has a first light source 11 and a second light source 12 for the redundant illumination of a display panel 2 (see FIG FIG. 2 ) on.
  • a display device 1 can have a large number of optical display fields 2. This is with the illustration a further first light source 11 'and a further second light source 12' illustrates.
  • the first light source 11 and the second light source 12 are connected to a drive module 3.
  • the drive module 3 is designed to control the first light source 11 via a first output 31 (red), a second output 32 (green) and a third output 33 (blue) in accordance with the color to be displayed. Particularly critical is the representation of the color yellow, in which of the drive module 3, the first output 31 and the second output 32 are driven.
  • the redundant second light source 12 is also configured to generate a base color or a mixed color from the primary colors red, green and blue, the second light source 12 is connected to the drive module 3 via a fourth output 34 (red), a fifth output 35 (green ) and a sixth output 36 (blue).
  • the drive module 3 is configured to likewise control the second light source 12 in accordance with the color of the first light source 11 to be generated, ie yellow, so that the fourth output 34 and the fifth output 35 are active.
  • the first light source 11 and the second light source 12 are each configured as an RGB LED.
  • the drive module 3 has a means 4 for detecting a short circuit and a means 5 for detecting a wire break. If a short circuit or wire break is detected in the RGB LED, then the means 4, 5 pass on the detected fault to a reporting means 6.
  • the drive module 3 is configured to turn off after detection of a short circuit or wire break the faulty light source and the shutdown after the occurrence of a fault is performed immediately.
  • a monitoring means is the command for switching off the light source, while the reporting means 6 reports a control module 7 an error and the control module 7 gives the control module 3 the command for switching off.
  • This shutdown or generally the detection of a fault in one of the two light sources 11,12 is forwarded to the control module 7.
  • the control module 7 is designed to take over the control and monitoring of all components necessary for the display device in addition to the outputting of shutdown commands.
  • FIG. 2 a display device with nine key switches is shown, namely a first key switch 21 to a ninth key switch 29.
  • the key switches 21 to 29 are each provided with a display panel 2. Behind the display panel 2 are in FIG. 1 described light sources redundant
  • This Fieldbus interface 8 connects via a fieldbus 40, the display device 1 with a programmable controller 41.
  • the control module 7 is further connected within the display device 1 to the fieldbus interface 8 and configured such that an error message regarding the light sources to the fieldbus interface 8 is forwarded and this Error message can thus get over the fieldbus 40 in the programmable logic controller 41 and inform a user or a machine operator about the failure of a light source as a fault message 42.
  • a machine operator could possibly detect the failure of an LED on the display device from the outside, since the faulty RGB LED is now turned off to prevent playback of wrong color information, but the other RGB LED, which is not affected by the errors, keeps lit and receives the color information of each key switch, only the brightness of the color information of the key switch is impaired.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Testing And Monitoring For Control Systems (AREA)

Claims (9)

  1. Appareil ( 1 ) d'affichage ayant un champ ( 2 ) d'affichage optique, dans lequel, derrière le champ ( 2 ) d'affichage, est disposée une première source ( 11 ) lumineuse, qui est constituée pour produire, à partir des couleurs fondamentales rouge, vert et bleu, une couleur fondamentale ou une couleur mélangée, la première source ( 11 ) lumineuse étant reliée à un module ( 3 ) d'excitation et le module ( 3 ) d'excitation étant conformé pour exciter la première source ( 11 ) lumineuse conformément à la couleur à produire,
    caractérisé en ce qu'une deuxième source ( 12 ) lumineuse est disposée derrière le champ ( 2 ) d'affichage et est conformée également pour produire une couleur fondamentale ou une couleur mélangée à partir des couleurs fondamentales rouge, vert et bleu, la deuxième source ( 12 ) lumineuse étant en liaison avec le module ( 3 ) d'excitation et le module ( 3 ) d'excitation étant conformé pour exciter la deuxième source ( 12 ) lumineuse conformément à la couleur à produire de la première source ( 11 ) lumineuse, un moyen de contrôle étant présent, qui est constitué pour détecter une erreur ou un défaut sur l'une des deux sources ( 11, 12 ) lumineuses et débrancher ensuite la source ( 11, 12 ) lumineuse défectueuse.
  2. Dispositif ( 1 ) d'affichage suivant la revendication 1, dans lequel le module ( 3 ) d'excitation de la première source ( 11 ) lumineuse a une première sortie ( 31 ), une deuxième sortie ( 32 ) et une troisième sortie ( 33 ) et, pour la deuxième source ( 12 ) lumineuse, une quatrième sortie ( 34 ), une cinquième sortie ( 35 ) et une sixième sortie ( 36 ).
  3. Dispositif ( 1 ) d'affichage suivant l'une des revendications 1 ou 2, dans lequel le module ( 3 ) d'excitation a un moyen ( 4 ) de détection d'un court-circuit rapporté aux sources ( 11, 12 ) lumineuses.
  4. Dispositif ( 1 ) d'affichage suivant l'une des revendications 1 à 3, dans lequel le module ( 3 ) d'excitation a un moyen ( 5 ) de détection d'une rupture de fil rapportée aux sources ( 11, 12 ) lumineuses.
  5. Dispositif ( 1 ) d'affichage suivant l'une des revendications 1 à 4, dans lequel le module ( 3 ) d'excitation a un moyen ( 6 ) d'avertissement, qui est conformé pour annoncer l'erreur détectée à un module supérieur hiérarchiquement.
  6. Dispositif ( 1 ) d'affichage suivant la revendication 5, dans lequel le moyen ( 6 ) d'avertissement est en liaison avec un module ( 7 ) de commande et le module ( 7 ) de commande forme, avec le moyen ( 8 ) d'avertissement, le moyen de contrôle.
  7. Dispositif ( 1 ) d'affichage suivant l'une des revendications 1 à 6, ayant une interface ( 8 ) de bus de champ pour le raccordement à un automate programmable.
  8. Dispositif ( 1 ) d'affichage suivant l'une des revendications 1 à 7, ayant un commutateur ( 21, ..., 29 ) à touches, qui comprend le champ ( 2 ) d'affichage.
  9. Dispositif ( 1 ) d'affichage suivant l'une des revendications 1 à 8, dans lequel la source ( 11, 12 ) lumineuse est conformée respectivement sous la forme d'une diode électroluminescente rouge, vert, bleu.
EP11175552.6A 2011-07-27 2011-07-27 Appareil d'affichage doté d'un champ d'affichage optique Active EP2552178B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP11175552.6A EP2552178B1 (fr) 2011-07-27 2011-07-27 Appareil d'affichage doté d'un champ d'affichage optique
US13/548,741 US8777432B2 (en) 2011-07-27 2012-07-13 Display device having an optical display field
CN201210262989.4A CN102905446B (zh) 2011-07-27 2012-07-26 带有光学显示区的显示装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11175552.6A EP2552178B1 (fr) 2011-07-27 2011-07-27 Appareil d'affichage doté d'un champ d'affichage optique

Publications (2)

Publication Number Publication Date
EP2552178A1 EP2552178A1 (fr) 2013-01-30
EP2552178B1 true EP2552178B1 (fr) 2014-04-16

Family

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Application Number Title Priority Date Filing Date
EP11175552.6A Active EP2552178B1 (fr) 2011-07-27 2011-07-27 Appareil d'affichage doté d'un champ d'affichage optique

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US (1) US8777432B2 (fr)
EP (1) EP2552178B1 (fr)
CN (1) CN102905446B (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103987172B (zh) * 2014-05-19 2016-10-05 宁波市爱使电器有限公司 组合式led路灯的光照强度控制方法
ES2709332T3 (es) * 2014-10-13 2019-04-16 Diebold Nixdorf Inc Conjunto de tarjeta de circuito indicador de guía
DE102016105989A1 (de) 2016-04-01 2017-10-05 Osram Opto Semiconductors Gmbh Lichtemittierendes Modul
KR102615606B1 (ko) * 2018-11-12 2023-12-18 엘지디스플레이 주식회사 유기발광표시장치

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1302883B1 (it) * 1998-11-27 2000-10-10 G & A Eng Srl Pulsante luminoso con colorazione variabile elettronicamente.
KR20070024235A (ko) * 2005-08-26 2007-03-02 삼성전자주식회사 백라이트 유닛, 이를 포함하는 표시장치 그리고 백라이트유닛의 제어방법
US7429917B2 (en) * 2006-02-27 2008-09-30 Whelen Engineering Company, Inc. LED aviation warning light with fault detection
US20110175952A1 (en) 2008-10-10 2011-07-21 Sharp Kabushiki Kaisha Illumination device and liquid crystal display device including same
DE102009031403A1 (de) * 2009-07-01 2011-01-05 Osram Gesellschaft mit beschränkter Haftung Leuchtelement, Leuchte und Verfahren zum Betrieb des Leuchtelements
CN101937911B (zh) * 2010-07-14 2013-07-24 深圳市华星光电技术有限公司 发光二极管封装构造及背光模块

Also Published As

Publication number Publication date
US20130027925A1 (en) 2013-01-31
EP2552178A1 (fr) 2013-01-30
CN102905446A (zh) 2013-01-30
CN102905446B (zh) 2015-12-16
US8777432B2 (en) 2014-07-15

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