EP0788250A2 - Interface optique pour diagnostiques d'une commande optoélectronique de points de cuisson - Google Patents

Interface optique pour diagnostiques d'une commande optoélectronique de points de cuisson Download PDF

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Publication number
EP0788250A2
EP0788250A2 EP97100681A EP97100681A EP0788250A2 EP 0788250 A2 EP0788250 A2 EP 0788250A2 EP 97100681 A EP97100681 A EP 97100681A EP 97100681 A EP97100681 A EP 97100681A EP 0788250 A2 EP0788250 A2 EP 0788250A2
Authority
EP
European Patent Office
Prior art keywords
receiver
transmitter
optical interface
feature
optoelectronic
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.)
Withdrawn
Application number
EP97100681A
Other languages
German (de)
English (en)
Other versions
EP0788250A3 (fr
Inventor
Thomas Dipl.-Ing. Gay
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.)
BSH Hausgeraete GmbH
Original Assignee
Siemens AG
BSH Bosch und Siemens Hausgeraete GmbH
Siemens Corp
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, BSH Bosch und Siemens Hausgeraete GmbH, Siemens Corp filed Critical Siemens AG
Publication of EP0788250A2 publication Critical patent/EP0788250A2/fr
Publication of EP0788250A3 publication Critical patent/EP0788250A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C23/00—Non-electrical signal transmission systems, e.g. optical systems
    • G08C23/04—Non-electrical signal transmission systems, e.g. optical systems using light waves, e.g. infrared
    • 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
    • H05B3/00—Ohmic-resistance heating
    • H05B3/68—Heating arrangements specially adapted for cooking plates or analogous hot-plates
    • H05B3/74—Non-metallic plates, e.g. vitroceramic, ceramic or glassceramic hobs, also including power or control circuits
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C2201/00—Transmission systems of control signals via wireless link
    • G08C2201/20—Binding and programming of remote control devices
    • G08C2201/21—Programming remote control devices via third means
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C2201/00—Transmission systems of control signals via wireless link
    • G08C2201/50—Receiving or transmitting feedback, e.g. replies, status updates, acknowledgements, from the controlled devices

Definitions

  • the invention relates to an optical interface, in particular for diagnosing an optoelectronic hotplate control, according to claim 1.
  • an external programming device for data input or output for programming systems for process control or the like is known, its coupling to the unit to be programmed as an optically working interface with mutually closed contact surfaces and mutually assignable light Transmitters or light sensors.
  • such an optical interface in particular when applied to an external programming and / or diagnostic unit for an optical hotplate controller covered by a protective pane, is to be upgraded with a view to high insensitivity to external or stray influences.
  • the coupling according to the invention between a programming and / or diagnostic unit on the one hand and a control unit on the other hand ensures a high transmission quality of the transmitted pulse-width-modulated signals, despite the fact that a mutual galvanic connection is advantageous for simple handling, since the high steepness of the edge means that it is conventional and has no steep edges Ambient light and the high pulse amplitude of transmission pulses from conventional remote controls that are usually not in the immediate vicinity have no influence.
  • FIG. 1 shows in the structural application configuration and FIG. 3 in the associated block diagram shows an optical interface between an external programming and / or diagnostic unit DE above a radiation-permeable ceramic pane CE provided as a protective cover and a control unit MC in the form of a microcontroller below the ceramic pane.
  • Disc CE as a component of an optoelectronic hotplate control arranged and connected on a circuit board (PL) with a plurality of optoelectronic touch keys (not shown here).
  • a first transmitter S1 and a first receiver E1 are used for optical transmission on the upper side of the ceramic disc CE and a second receiver E2 assigned to the first transmitter S1 and a second transmitter S2 assigned to the first receiver E1 are located below the ceramic disc CE.
  • the second transmitter S2 and the second receiver E2 are connected to a serial interface output of the microcontroller, which a controller of this type, including the necessary test software, generally has.
  • the latter advantageously remains blocked during the transmission time of the activated transmitter; the data are transmitted in half-duplex mode, in which only one of the participants alternately transmits, while the other participant only receives.
  • an interface converter SW is provided on the external side between the first transmitter S1 and the first receiver E1, on the one hand, and the external programming and / or diagnostic unit DE, on the other hand, which converts or outputs the programming and / or diagnostic unit DE. incoming signals converted to the so-called TTL level.
  • this microcontroller itself can be used as a diagnostic component, in particular during the production process, in order to be able to check the correct functioning of the entire hotplate control; In addition, an initialization or update of operating parameters and, if necessary, customer service can be quickly localized, the errors are possible.
  • FIG. 2 shows in its upper first picture the example of a pulse train for a pulse-width-modulated signal which can be transmitted without interference via the first transmitter S1 to the second receiver E2 by means of infrared radiation through the ceramic disc CE and for a specific command configuration in the microcontroller MC the control unit, which in turn can then provide feedback via the second transmitter S2 by infrared radiation through the ceramic disc CE to the first receiver E1 and thus to the programming and / or diagnostic unit.
  • the output signals are usually set to high, the data bits to active low.
  • an infrared LED provided as the first transmitter S1 is pulsed, whereby no current flows during the transmission pole breaks, but a short current surge is generated during the respective pulse-compliant switch-on in such a way that the necessary high slope and high pulse amplitude is achieved;
  • the infrared signal formed in this way is shown with a steep flank during the respective pulse change in accordance with the first signal curve.
  • the corresponding signal arriving below the ceramic disc CE at the second receiver E2 is made up of the signal emitted by the first transmitter S1 with increased edge steepness and pulse amplitude and a superimposed noise caused by disturbance variables such as e.g. Room lighting and remote controls together.
  • This signal is the input signal of a differentiator DI downstream of the second receiver E2, the output signal of which is a function of the steepness of its input signals.
  • a signal change corresponding to the processed pulse edges of the signal curve in the first image leads to a short output pulse with a high amplitude, while a slow signal change only leads to a small output amplitude. This last state of affairs is indicated in the waveform of the fourth image in FIG. 2.
  • the differentiator DE is assigned a Schmitt trigger ST with an upper and a lower switching threshold, indicated with a dashed curve in the fourth image, by means of which the original pulse-width-modulated signal according to the signal curve in the fifth image can be back-modulated that a pulse edge is set by a large output amplitude each time a switching threshold is reached.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Communication System (AREA)
  • Cookers (AREA)
EP97100681A 1996-01-30 1997-01-17 Interface optique pour diagnostiques d'une commande optoélectronique de points de cuisson Withdrawn EP0788250A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19603295 1996-01-30
DE1996103295 DE19603295A1 (de) 1996-01-30 1996-01-30 Optische Schnittstelle, insbesondere zur Diagnose einer optoelektronischen Kochstellensteuerung

Publications (2)

Publication Number Publication Date
EP0788250A2 true EP0788250A2 (fr) 1997-08-06
EP0788250A3 EP0788250A3 (fr) 2001-11-07

Family

ID=7784046

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97100681A Withdrawn EP0788250A3 (fr) 1996-01-30 1997-01-17 Interface optique pour diagnostiques d'une commande optoélectronique de points de cuisson

Country Status (2)

Country Link
EP (1) EP0788250A3 (fr)
DE (1) DE19603295A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2866512A1 (fr) * 2004-02-12 2005-08-19 Jaeger Controls Systeme de table de cuisson electrique

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19619927C2 (de) * 1996-05-17 1998-06-04 Siemens Ag Optische Schnittstelle
DE29818520U1 (de) 1998-10-20 1999-02-11 industrie automation Energiesysteme GmbH & Co, 79232 March Einrichtung zur Datenübertragung und zur Freigabe von Funktionen eines Gerätes
DE10220723B4 (de) * 2002-05-10 2005-07-28 Diehl Ako Stiftung & Co. Kg Verfahren zur drahtlosen Datenübertragung

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3921344A1 (de) 1989-06-29 1991-01-10 Hengstler Gmbh Externes programmiergeraet

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3243517A1 (de) * 1982-11-25 1984-05-30 Peter Prof.Dr. Russer Elektrooptische empfangsantenne
DE3717591A1 (de) * 1987-05-25 1988-12-08 Hartmann & Braun Ag Schaltungsanordnung zur potentialfreien erfassung von binaeren signalen
FR2622754B1 (fr) * 1987-10-29 1990-01-12 Alcatel Espace Systeme de transmission radiofrequence-optique, notamment dans le domaine des telecommunications spatiales
DE3909126C2 (de) * 1989-03-20 1998-06-04 Diehl Gmbh & Co Schaltgerät für einen Kochherd
US5142397A (en) * 1990-01-04 1992-08-25 Dockery Devan T System for extending the effective operational range of an infrared remote control system
DE4019224A1 (de) * 1990-06-15 1991-12-19 Standard Elektrik Lorenz Ag Funk-nachrichtenuebertragungssystem, insbesondere zellulares mobilfunksystem
US5315645A (en) * 1990-12-10 1994-05-24 Tek Electronics Manufacturing Corporation Communication apparatus utilizing digital optical signals
ES2048106B1 (es) * 1992-07-03 1995-06-16 Balay Sa Sistema para el control remoto de electrodomesticos.
FI109496B (fi) * 1992-08-18 2002-08-15 Nokia Corp Laitteisto ja menetelmä digitaalisen infrapunavälitteisen tiedonsiirron järjestämiseksi radiopuhelinlaitteen perusosan ja toisen laitteen välillä
US5383044B1 (en) * 1992-09-18 1998-09-01 Recoton Corp Systems methods and apparatus for transmitting radio frequency remote control signals
DE4310230C2 (de) * 1992-11-26 1997-09-11 Sel Alcatel Ag Tragbares Teilnehmerendgerät für den Mobilfunk
JPH06216778A (ja) * 1993-01-14 1994-08-05 Mitsubishi Electric Corp 通信制御装置の復調回路
US5349162A (en) * 1993-04-05 1994-09-20 Whirlpool Corporation Fault detection method and apparatus for a domestic appliance
DE4433896C1 (de) * 1994-09-22 1995-11-09 Siemens Ag Verfahren und Kommunikationssystem zur Reduzierung der Funkübertragungen in drahtlosen Kommunikationssystemen
DE9416779U1 (de) * 1994-10-18 1994-12-08 Bosch-Siemens Hausgeräte GmbH, 81669 München Sensorgesteuerte Glaskeramik-Kochstelleneinheit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3921344A1 (de) 1989-06-29 1991-01-10 Hengstler Gmbh Externes programmiergeraet

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2866512A1 (fr) * 2004-02-12 2005-08-19 Jaeger Controls Systeme de table de cuisson electrique

Also Published As

Publication number Publication date
DE19603295A1 (de) 1997-07-31
EP0788250A3 (fr) 2001-11-07

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