EP2534532A1 - Interface avec un séparateur de potentiel dans la branche de réception - Google Patents

Interface avec un séparateur de potentiel dans la branche de réception

Info

Publication number
EP2534532A1
EP2534532A1 EP11702652A EP11702652A EP2534532A1 EP 2534532 A1 EP2534532 A1 EP 2534532A1 EP 11702652 A EP11702652 A EP 11702652A EP 11702652 A EP11702652 A EP 11702652A EP 2534532 A1 EP2534532 A1 EP 2534532A1
Authority
EP
European Patent Office
Prior art keywords
branch
interface
signals
potential separation
separation element
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.)
Granted
Application number
EP11702652A
Other languages
German (de)
English (en)
Other versions
EP2534532B1 (fr
Inventor
Christian Nesensohn
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.)
Tridonic GmbH and Co KG
Original Assignee
Tridonic GmbH 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 Tridonic GmbH and Co KG filed Critical Tridonic GmbH and Co KG
Publication of EP2534532A1 publication Critical patent/EP2534532A1/fr
Application granted granted Critical
Publication of EP2534532B1 publication Critical patent/EP2534532B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • H05B47/10—Controlling the light source
    • H05B47/175—Controlling the light source by remote control
    • H05B47/18—Controlling the light source by remote control via data-bus transmission

Definitions

  • the invention generally relates to the field of interfaces for operating devices of building technology, in particular for connected bulbs.
  • the interface has a reception branch for incoming signals, for example from a bus, and optionally also a transmission branch.
  • the interface can be designed to receive digital and / or analog signals.
  • the signals may have amplitudes in the low-voltage range (eg below 15 volts) and / or mains voltage range (220V to 250 volts).
  • the incoming signals can be DC or AC signals.
  • the reception branch of the interfaces addressed by the invention has a potential separation element.
  • a bidirectional interface is known, via which an operating device for a lighting means can swap over a bus with a central digital data.
  • the interface consists of a receiving branch with subsequent potential separation element and a transmission channel.
  • the reception branch and the transmission channel are combined at the ports intended for connection to the bus.
  • the reception branch read the data given by the transmission channel on the bus, which is also desirable.
  • the reception branch is supposed to check the data output by the transmission channel and - if time errors are detected - correct.
  • the invention deals with another problem which is not limited to the combination of the reception branch with a transmission channel, but is related to the presence of an electrical isolation element adjacent to the reception branch which is necessary for a galvanic isolation between input and output of the reception branch is.
  • the potential separator is typically an optocoupler.
  • a potential separator for example a transformer operated at a fundamental frequency, modulating a frequency on one side of the transformer for signal transmission which can then be read out on the other side.
  • the signal states can be discriminated digitally via the modulated frequency.
  • potential isolators of the type considered here, in particular optocouplers only have an acceptable transmission behavior in the form of still tolerable signal distortions, if they are operated with a certain minimum power. in the In the case of optocouplers operated with an impressed current from a power source, this means that for each specimen there is a certain minimum operating current value which must not be undercut. Otherwise, the signal distortions during the transmission can lead to the fact that the received useful signals can not be evaluated.
  • the invention is therefore based on the object to make the receiving branch of an interface with potential separator more efficient.
  • One aspect of the invention relates to a method for setting a receiving branch (1) designed for the reception of preferably digital signals with an electrically isolated basic power, preferably for controlling an operating device (6) for a lighting means (7),
  • the control unit can evaluate the defined signal parameters and set the basic power of the potential separation element depending thereon.
  • the potential separator (2) may be a transformer which is operated at a fundamental frequency, which is aufmoduliert for signal transmission a higher frequency, and
  • the fundamental frequency and / or its amplitude and / or the amplitude of the modulated modulation is / are set in order to minimize the power requirement of the receiving branch (1).
  • the signals can be transmitted by a transmitting branch of the same interface, whose receiving branch has the potential isolating member, or by an external source, such as.
  • a central unit or another operating device The setting of the basic power can, for example. In the fabrication of the interface, during commissioning, and / or to be executed at defined intervals.
  • the adjustment of the basic power may be performed when a temperature fluctuation detected by the control unit exceeds a threshold value.
  • the basic power can be set depending on a detected temperature.
  • the distortion experienced by a bit pulse supplied to the receiving channel as it passes the potential isolation member can be detected and evaluated, and the power supplied to the potential separation element can be set so low that the distorted bit pulse just yet meets certain minimum conditions with regard to its shape, in particular with regard to its amplitude and / or pulse width
  • the forward pulse edge of the bit pulse (B) supplied to the receiving branch can be compared with that of the bit pulse (C) which is distorted by the passage of the potential separation element, and the delay time (tV) can be determined therefrom, and
  • the power supplied to the potential separator can be adjusted depending on the delay time.
  • the adjustment of the power isolator supplied power can be repeated periodically.
  • the temperature of the potential separation element and / or its environment can be additionally measured and taken into account.
  • the bit pulse (B) may be a test bit pulse or a payload.
  • an optocoupler is used as potential separator, whose operating current is set in order to minimize the power requirement in the sense described above.
  • the receiving branch can be connected to an adjacent potential separation element be connected to a transmission channel, wherein the reception branch generates a test bit pulse, which reads from the reception branch for the purpose of determining the delay time.
  • the reception branch is also provided with time information on the start edge of the test bit pulse so that the system can determine the delay time between the time of occurrence of the start edge of the original test bit pulse and the time of occurrence of the start edge of the pass of the potential separator is distorted test bit pulse.
  • the start edge of the distorted test bit pulse is typically less steep than that of the original test bit pulse. This also means that the pulse width of the distorted test bit pulse is less than that of the original test bit pulse. If the distortion is particularly strong, this can also be a
  • Amplitude reduction result This fact can be used to determine if the amplitude of a distorted test bit pulse still reaches a certain minimum value. By appropriate dimensioning of the minimum amplitude value, it is possible, irrespective of the delay time, to make a decision as to whether an increase in the power supplied to the potential isolating element is necessary or not.
  • the delay time and / or the amplitude value are therefore also suitable for validating the useful signals supplied to the reception branch.
  • the invention further relates to an em catch branch with it subsequent potential separation member with which the task defined above can be solved device technology.
  • An aspect of the invention in this case provides measuring means for measuring the distortion, which experiences a bit pulse supplied to the receiving branch when passing the potential separation element, and also adjusting means for the power supplied to the potential separation element as a function of the measurement result, such that the distorted bit pulse just yet meets certain minimum conditions with regard to its shape, in particular with regard to its amplitude and / or pulse width.
  • Another aspect of the invention provides an interface for operating devices for lighting, which is designed to carry out a method of the type mentioned above.
  • the invention provides an integrated circuit, in particular an ASIC, microcontroller or hybrid thereof, which is designed to evaluate at one input signals from a reception branch of an interface via a potential separation element, and at an output an electrical parameter, in particular electrical a basic energy supply of the potential separation element directly or indirectly.
  • an integrated circuit in particular an ASIC, microcontroller or hybrid thereof, which is designed to evaluate at one input signals from a reception branch of an interface via a potential separation element, and at an output an electrical parameter, in particular electrical a basic energy supply of the potential separation element directly or indirectly.
  • the circuit can be designed to the electrical parameters depending on a
  • the invention also provides an operating device for lighting means, comprising an interface having such an integrated circuit.
  • the invention also provides a lighting system comprising a plurality of operating devices for lighting means, including at least one of the above-mentioned type, the operating devices being connected to one another and / or to a central unit via a signal line, in particular an analogue or digital bus.
  • the central unit or an operating device can be designed for the transmission of test signals via the signal line, so that a (further) operating device for lighting means under evaluation of these in the reception branch of a unidirectional or bidirectional interface of a (further) operating device for lighting (adaptive) the basic electrical supply a potential separator of its receive branch can set.
  • Figure 1 is a schematic block diagram of a
  • FIGS. 2 (a) and (b) show time profiles of
  • FIG 3 is a block diagram as Figure 1, but with
  • FIG. 1 shows a bidirectional interface according to the prior art, as known from WO 2006/010416.
  • This interface is used for bidirectional data exchange of an operating device (ECG) 6 for a light source 7 (preferably a fluorescent tube) with a remote, not shown center or another operating device via a bus 8.
  • ECG operating device
  • a light source 7 preferably a fluorescent tube
  • a remote, not shown center or another operating device via a bus 8.
  • ECG operating device
  • a light source 7 preferably a fluorescent tube
  • a remote, not shown center or another operating device via a bus 8.
  • the output of the receiving branch 1 is followed by an opto-coupler 2 serving for potential separation. This is powered by a power source 3 with operating power.
  • the system further includes a controller 4 that includes an input logic 5 and an output logic 9. The output signals of the optocoupler 2 are supplied to the input logic, which in turn evaluates these signals and the control unit 6 corresponding control commands supplies.
  • the operating device 6 in turn outputs state information to the output logic 9, which converts these into digital DALI signals and another
  • Potential separation element 10 to the transmission channel 11 supplies.
  • the latter transmits the digital output signals via the bus 8 to the control center.
  • the digital output signals are - as mentioned above - read from the receiving branch 1, checked and evaluated.
  • the evaluation result can be used to correct the digital signals to be transmitted if time errors have been detected in the previously transmitted signals.
  • A represents the envelope of a bit signal sequence transmitted by the control center via the bus 8 in accordance with the DALI standard.
  • This bit signal sequence has a predetermined gap of at least 10 ms at intervals.
  • the transmission channel 11 sends a test bit pulse B generated in it, which the reception branch 1 reads.
  • FIG. 2 (b) now shows how the test bit pulse is distorted as it passes through the optocoupler 2, specifically the lower the operating current supplied to the optocoupler 2 by the current source 3.
  • the distorted test bit pulse C is thus the result of a relatively high operating current, while the more distorted test bit pulse D is the result of a reduced operating current for the optocoupler 2.
  • the reduced amplitude of the distorted test bit pulse can be used as a criterion for the transmission quality of the receiving branch 1 with optocoupler 2 following it.
  • the amplitude level is only suitable for assessing whether a predetermined amplitude threshold value is exceeded or undershot.
  • a more accurate evaluation allows the delay time t v , which corresponds to the time interval between the start edge of the original test bit pulse and the start edge of the distorted test bit pulse, for a given reference voltage U ref .
  • the analog or digital signals for setting the potential separation element can thus be generated:
  • an additional circuit block 13 which communicates with the input logic 5 and the output logic 9 and generates a control signal for the current source 3 which supplies the optocoupler 2 with operating energy provided.
  • the output logic 9 notifies the block 13 of the timing of the start edge of the test bit pulse B generated in the output logic 9, while the block 13 receives from the input logic the information about the timing at which the amplitude of the distorted test bit Pulses C reaches the reference voltage U ref .
  • the block 13 can determine the delay time t v and set the current source 3 for the optocoupler so that a certain limit for the delay time t v is just not exceeded.
  • the operating current for the optocoupler is increased when an extension of the delay time t v is detected, and conversely, the operating current is lowered when the delay time t v shortens.
  • the adjustment of the current source 3 for the optocoupler 2 can be made once or continuously repeated.
  • the operating current for an optocoupler which is required to cover the entire spectrum of manufacturing tolerances and possible operating temperatures, previously had to be set at 400 ⁇ without the inventive measure.

Landscapes

  • Arrangements For Transmission Of Measured Signals (AREA)
  • Dc Digital Transmission (AREA)

Abstract

L'invention concerne un procédé pour le réglage d'une branche de réception (1) réalisée pour la réception de signaux, de préférence numériques, à laquelle se raccorde un séparateur de potentiel (2) présentant une puissance de base électrique active et servant de préférence à commander un appareil de service (6) pour un moyen d'éclairage (7). Ce procédé comporte les étapes suivantes : - réception par la branche de réception de plusieurs signaux provenant d'une source de signaux interne ou externe et - diminution ou augmentation de la puissance de base amenée au séparateur de potentiel jusqu'à ce qu'un paramètre de signal défini chute en deçà ou dépasse une valeur seuil sur le côté secondaire du séparateur de potentiel relié à une unité de commande.
EP11702652.6A 2010-02-11 2011-02-10 Interface avec isolation électrolytique dans la voie de réception Active EP2534532B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010001795A DE102010001795A1 (de) 2010-02-11 2010-02-11 Schnittstelle mit Potentialtrennglied im Empfangszweig
PCT/EP2011/051968 WO2011098524A1 (fr) 2010-02-11 2011-02-10 Interface avec un séparateur de potentiel dans la branche de réception

Publications (2)

Publication Number Publication Date
EP2534532A1 true EP2534532A1 (fr) 2012-12-19
EP2534532B1 EP2534532B1 (fr) 2016-01-20

Family

ID=43900805

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11702652.6A Active EP2534532B1 (fr) 2010-02-11 2011-02-10 Interface avec isolation électrolytique dans la voie de réception

Country Status (3)

Country Link
EP (1) EP2534532B1 (fr)
DE (2) DE102010001795A1 (fr)
WO (1) WO2011098524A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010064027B4 (de) * 2010-12-23 2018-10-18 Tridonic Gmbh & Co Kg Schnittstelle mit Potentialtrennglied im Empfangszweig

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0556544A1 (fr) * 1992-02-18 1993-08-25 Martignoni Electronics Ag Arrangement de circuit pour la connexion d'un terminal de voix ou de données à une ligne de communication
US5422629A (en) * 1992-03-30 1995-06-06 Brk Brands, Inc. Alarm silencing circuitry for photoelectric smoke detectors
FR2706701B1 (fr) * 1993-06-14 1997-03-21 Apple Computer Dispositif d'isolation galvanique à optocoupleur, et modem l'incorporant.
DE102004035752A1 (de) 2004-07-23 2006-03-16 Tridonicatco Gmbh & Co. Kg Verfahren zur Kontrolle von Übertragungen einer bidirektionalen Schnittstelle
DE102007013758B4 (de) * 2007-03-09 2016-05-04 Tridonic Gmbh & Co Kg Busfähiges Betriebsgerät für Leuchtmittel mit temperaturkompensiertem Sendezweig, Verfahren zur Temperaturkompensation des Übertragungsverhaltens eines Optokopplers und Steuereinheit zur Durchführung des Verfahrens

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2011098524A1 *

Also Published As

Publication number Publication date
WO2011098524A1 (fr) 2011-08-18
DE102010001795A1 (de) 2011-08-11
DE112011100510A5 (de) 2013-01-17
EP2534532B1 (fr) 2016-01-20

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