EP2796012B1 - Procédé, appareillage d'alimentation et système d'éclairage, avec détection d'effet de redressement de lampes - Google Patents

Procédé, appareillage d'alimentation et système d'éclairage, avec détection d'effet de redressement de lampes Download PDF

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Publication number
EP2796012B1
EP2796012B1 EP12824791.3A EP12824791A EP2796012B1 EP 2796012 B1 EP2796012 B1 EP 2796012B1 EP 12824791 A EP12824791 A EP 12824791A EP 2796012 B1 EP2796012 B1 EP 2796012B1
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EP
European Patent Office
Prior art keywords
light
threshold value
emitting means
lamp
socp
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Not-in-force
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EP12824791.3A
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German (de)
English (en)
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EP2796012A1 (fr
Inventor
Hans Auer
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Tridonic GmbH and Co KG
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Tridonic GmbH and Co KG
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    • 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
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
    • H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
    • H05B41/282—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices
    • H05B41/285—Arrangements for protecting lamps or circuits against abnormal operating conditions
    • H05B41/2851—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions
    • H05B41/2855—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions against abnormal lamp operating conditions

Definitions

  • the present invention relates to control gear for lamps, in particular for gas discharge lamps, as well as to a lighting system.
  • a first aspect of the invention relates to a method for operating at least one luminous means, such as, for example, a gas discharge lamp, starting from a clocked circuit.
  • a measurement signal which reproduces a first electrical parameter with respect to the luminous means operation is compared with a threshold value.
  • the threshold value can be set as a function of a rectifier effect having the luminous means.
  • a further aspect of the invention relates to a method for operating at least one luminous means, such as. Gas discharge lamp, starting from a clocked circuit.
  • a luminous means such as. Gas discharge lamp
  • To detect a fault condition of the operation of the bulb is a measurement signal, the one reproduces electrical parameter with respect to the lighting mode, with a. Threshold compared.
  • the threshold value can be set as a function of the DC component of the luminous flux.
  • Another aspect of the invention relates to a method for operating at least one light source, such as. Gas discharge lamp.
  • a rectifier effect of the luminous means is determined in such a way that an error state (EOL) can be derived from a comparison of a value (Sbase) that reproduces this rectifier effect with a threshold value (SEOL +).
  • the determined rectifier effect is taken into account when monitoring another fault condition.
  • Another aspect of the invention relates to a control circuit, in particular ASIC or microcontroller, which is designed for such a method.
  • Another aspect of the invention relates to an operating device for lighting means, in particular for gas discharge lamps, comprising such a control circuit.
  • Another aspect of the invention relates to a lighting system, comprising a control unit and at least one such preferably connected via a bus line such operating device.
  • a further aspect of the invention relates to a circuit for operating a luminous means, such as, for example, a gas discharge lamp, comprising a half-bridge or full-bridge circuit for providing a supply voltage for the at least one luminous means, and a control circuit for controlling the operation of the lighting means and / or error detection.
  • a measurement signal which reproduces a first electrical parameter with regard to the luminous means operation is compared with a threshold value.
  • the threshold value can be set as a function of a rectifier effect having the luminous means.
  • the rectifier effect can be detected by directly or indirectly monitoring a rectifier effect parameter.
  • the rectifier effect parameter can map the voltage dropping at the light source, the luminous flux, the luminous flux impedance and / or the power consumed by the luminous means.
  • the rectifier effect can be detected by directly or indirectly monitoring a rectifier effect parameter.
  • the rectifier effect parameter can reflect the DC voltage drop across the lamp or the unbalance of the lamp current.
  • the threshold may be adjustable such that a variation of the rectifier effect parameter results in a corresponding variation of the threshold.
  • the threshold may be adjustable at each clock or period of the clocked circuit.
  • a detected change in the rectifier effect parameter may result in the adjustment of the threshold in the next clock of the clocked circuit.
  • the maximum permissible change of the threshold value can be limited.
  • An error condition can be triggered as soon as the rectifier effect parameter reaches or reaches several times.
  • the measurement signal can reproduce the current through a switch of the clocked circuit, and be compared to detect an overcurrent with a threshold value.
  • the threshold can be used to detect a dead reset of a switch of the clocked circuit.
  • the threshold value can serve to detect a capacitive operation of the luminous means.
  • a first exemplary embodiment of a measuring circuit for an operating device 1 for at least one luminous means is to be described schematically on the basis of FIG Fig. 1 be explained.
  • the AC line voltage is fed via a filter 8 to an AC / DC converter 7.
  • the AC line voltage is converted into a DC voltage and set to a higher voltage, preferably between 300V and 400V. This is accordingly also at the storage capacitor 6.
  • the AC / DC converter 7 may include a rectifier and also an active (PFC) circuit (clocked by a switch controlled by a control unit or formed by a charge pump circuit (Active or Passive Valley Fill)).
  • An inverter 2 in this case a half-bridge, alternately drives the switches Q1 and Q2, preferably power transistors. This is used to provide a supply voltage for at least one light-emitting element 4.
  • the luminous element or luminous means may be a gas discharge lamp, but also any other type of luminaire, for example an LED or OLED or LED / OLED arrangement.
  • the half-bridge current is detected via a measuring resistor R102 in series with the lower-potential switch Q2 of the half-bridge.
  • the lamp voltage is detected via a resistor divider R104.
  • Both measurement signals are preferably fed via a single pin SDV_lamp a control circuit 3, preferably an ASIC.
  • a control circuit 3 preferably an ASIC.
  • any other form of integrated circuit, such as a microcontroller or hybrid solution, or a conventional (discrete) circuit may be used as an alternative to the ASIC.
  • the ASIC 3 also controls the AC / DC converter and the clock frequency of the half bridge 2.
  • the pin SDV_lamp is therefore an addition of the voltages of the lamp voltage resistance divider R104 and the measuring resistor R102.
  • the ASIC 3 has an internal constant current source A. This supplies the incoming signal with a DC level, so that negative voltages at the pin SDVlamp are avoided.
  • the internal constant current source A can also be an external power source, in the simplest case, a to a supply voltage (eg, the bus voltage or low-voltage supply) connected resistor or it can also be an internal or external voltage source can be used.
  • the signal of the half-bridge current has a regular time interval, with preferably half a period length in which it is zero. The reason for this is that during this period, the switch Q2 is open and therefore no half-bridge current is measured. In this period, therefore, only the lamp voltage is applied to the pin SDV lamp . This circumstance can be exploited to discriminate the two signals.
  • the signal of the lamp voltage has a sinusoid, which can be sufficiently determined by measuring frequency and amplitude.
  • an overcurrent for example at throttle saturation in the lamp ignition process or an overcurrent during lamp operation, can be determined. Furthermore, a capacitive operation of the lamp and an EOL effect (end of lamp life) of the lamp can be detected.
  • the attenuation of the AC component of the lamp voltage takes place in the circuit according to Fig. 1 regardless of their DC component.
  • the AC component is attenuated more than the DC component.
  • the capacitor C10X serves as a filter for the AC component.
  • the DC component is less dampened relative to the AC component.
  • both values can be damped in areas suitable for the ASIC. This is necessary because the voltage spikes of the AC component in the firing process are many times higher than the DC component whose DC offset is used to identify an EOL. If the capacitor C10X has a sufficiently large value, the high-frequency AC voltage component of the lamp voltage can be filtered out, so that the detected signal at the input SDV Lamp is composed of the DC voltage component of the lamp voltage and the half-bridge current. Thus, during the phase in which no half-bridge current is detected, the DC component of the lamp voltage can be measured, while in the phase in which a half-bridge current flows, the half-bridge current is detected, taking into account the determined DC voltage component of the lamp voltage.
  • the AC signal of the half-bridge current can be used, for example, to identify a saturation of the throttle as well as to detect an overcurrent, a capacitive operation or for preheat control.
  • the ignition detection for example, additionally monitors whether the throttle is no longer in saturation. It can also be an ignition control, in which the throttle is driven to saturation. When igniting an ignitible or defective lamp, the circuit is driven into saturation because the frequency is very close. is pushed to resonance). In case of saturation can at least one half-bridge switch is opened earlier, but preferably the next switching clock is initiated with the previous switch-on time. The omission of the saturation, or a high ignition current, can also be used as an ignition detection signal
  • the heating coils of the lamp 4 are first preheated.
  • the half-bridge 2 generates an AC voltage which is above the resonant frequency of the resonant circuit.
  • the resulting voltage is too low to cause the ignition of the lamp 4.
  • the pin SDVI Lamp may be in standby at this time if none of the measurements described above is used, such as lamp filament detection or preheat control.
  • the ignition of the lamp 4 is achieved in that the switch-on time of the two switches Q1 and Q2 of the inverter is gradually increased. Accordingly, the operating frequency of the inverter is reduced.
  • the internal current source A can also be realized as a stepwise switchable current source or as a parallel connection of two current sources.
  • different currents to compensate for a DC offset can be impressed by the internal power source A and
  • a lower current for the internal power source A can be set during ignition, so that a lower sensitivity can be set according to the expected high voltages.
  • the detection of errors such as the detection of the EOL effect can be activated depending on the operating state of the lamp or the circuit.
  • the following is an example of a method for avoiding overcurrent in lamp ignition.
  • the heating coils are preheated.
  • switch Q1 of the inverter is closed.
  • Switch Q2 is open at this time.
  • t R it is preferably half the period of the current operating frequency of the inverter, but it may also be a shorter period of time.
  • the switch Q2 is closed. There may be a delay time t D between the opening of the switch Q1 and the closing of the switch Q2.
  • the signal applied to Pin SDV lamp is measured. If it is above a threshold value V lamp peak (pk), the lamp is supplied with an excessively high current. However, it is also conceivable, an inadmissible high current only when the threshold has been exceeded several times, for example five times.
  • the increase in the current can also be assessed and an inadmissibly high rise can be used as an additional assessment criterion.
  • the signal to be analyzed by the AC voltage must always be taken into account in the characteristic to be analyzed in the ASIC.
  • the signal of the lamp voltage from the ASIC must be compensated analogously without delay.
  • the switch Q2 For returning the half-bridge current to permissible ranges, the switch Q2 is now opened again immediately. This is equivalent to an increase in the current switching frequency.
  • the actual operating frequency of the inverter is not changed.
  • the process is instead repeated with keeping the current operating frequency, preferably after a dead time, by a return to the step of closing the switch Q1.
  • the duty cycle t R is increased.
  • the operating frequency of the inverter is reduced.
  • the process is repeated several times in succession. There may be a delay time t D between the steps of opening and closing the switches.
  • the inadmissible state may occur that the lamp is operated capacitively. In this state, a current flows through the switch when switching on. This can destroy the switch. Furthermore, in capacitive operation, the regulation of the lamp by the ASIC no longer works.
  • the following example shows a method of avoiding capacitive operation of the lamp.
  • a gradient measurement is made here between the phase of the lamp voltage and the half-bridge current. (Instead of the lamp voltage, it is also possible to monitor another voltage in the load circuit, for example the voltage across the choke or via a transformer, if present).
  • the lamp After a successful ignition, the lamp is in normal operation. At least two measurements are now taken at successive times at the pin SDV lamp . The measurements are samples. The measurements are taken at a time when switch Q2 has just not been opened.
  • the difference of the at least 2 measurements is then calculated.
  • the measuring process is repeated several times. However, the possibility also exists after a time interval, or only after the change of parameters, e.g. the lamp dimming, make another measurement.
  • the dead time is preferably a predetermined value, but it is also conceivable to use an adaptive method for determining the dead time. For example, an extension of the dead time would be possible with a single or renewed occurrence of a capacitive operation.
  • the dead time can also be adjusted by measuring and checking the half-bridge current shortly before switching on the switch Q2 (ie while a current is already flowing through the free-wheeling diode from the switch Q2). With an impermissible value for the half-bridge current, the dead time can be increased and thus the switch Q2 can be protected from an overcurrent or an overload.
  • a measurement S1 is made immediately before switching off switch Q2 on pin SDV lamp .
  • Another measurement S2 is made immediately after switching on switch Q1.
  • the threshold value is compared with the difference S1-S2.
  • the driving frequency of the half-bridge is subsequently increased.
  • the lamp operation returns to the inductive branch of the resonance curve.
  • the lamp is turned off.
  • a counter x can be used, which is increased by one.
  • the value of the counter x is compared with a reference value X max .
  • the lamp is switched off.
  • the counter x can be reset to 0.
  • any other measure is conceivable, for example, a signal that warns of a capacitive operation.
  • the charge in capacitor C101 slowly becomes smaller. This charge was caused by a high half-bridge current during the ignition phase. However, the internal DC power source and the DC component of the lamp voltage recharge the capacitor C101 at the same time due to an EOL (End of Lamp Life) effect. In this way, the charge stabilizes at a certain level.
  • the DC component of the lamp voltage can be easily monitored.
  • Fig. 2 shows the time course of different signals or voltages within the operating device.
  • the signal Vgs / Q1 indicates the gate-source voltage or the control voltage of the higher-potential switch Q1 of the inverter 2.
  • the signal Vgs / Q2 is the gate-source voltage or the control voltage of the potential-low Switch Q2. Both switches are turned on and off periodically. In each period TP, each switch Q1, Q2 is turned on once. The higher-potential switch Q1 is turned on at a time T0, T4 and turned off again at a later time T1. The potential-low switch Q2 is turned on at a time T2 and turned off again at a later time T3. Between switching off one of the switches and turning on the other switch, there is preferably a delay time T2-T1 and T4-T3.
  • the control voltages Vgs / Q1, Vgs / Q2 for the switches are preferably PWM signals.
  • Fig. 2 also shows the voltage Vds / Q2 between drain and source.
  • this voltage Vds / Q2 is at a low voltage level, preferably zero.
  • this voltage Vds / Q2 rises to a constant value and, after turning off the higher-potential switch Q1, it goes back to the low voltage level.
  • the signal SDEOL corresponds to the signal SDV Lamp described above, which is present at the pin of ASIC and which represents the measurement of the half-bridge current and the lamp voltage.
  • a rectifier effect can be deduced.
  • this effect is detected on the basis of the signal SDEOL, for example if the DC component of the lamp voltage is higher than a first threshold value SEOL +.
  • a rectifier effect is detected if the DC component of the lamp voltage is smaller than a second threshold value SEOL-.
  • the rectifier effect may e.g. occur on older gas discharge lamps or fluorescent lamps and lead to an overload of the operating device 1. Because of the uneven emission surfaces of the two lamp electrodes, the lamp current flowing over the gas discharge path of the gas discharge lamp concerned can then be higher in one direction than in the other. The fluorescent lamp then acts in a similar way to a rectifier, preferentially passing the lamp current in one direction while being less well transmitted in the opposite direction.
  • a slower occurring rectifier effect is recognized according to the invention. This is done e.g. by means of the signal SDEOL, in which the value of this signal SDEOL is detected during the switch-off time of the higher-potential switch Q1 or during the switch-on time of the low-potential switch Q2.
  • the only measured DC component of the signal SDEOL indeed comes from the lamp voltage during this period. If the measured value of the DC lamp voltage is not between the two prescribed threshold values SEOL + and SEOL-, an inadmissible rectifier effect is detected and appropriate measures are taken.
  • the rectifier effect can also be recognized by the fact that asymmetries in the lamp current occur. An excessive asymmetry would then lead to a fault condition.
  • a monitoring signal so can also serve the lamp current.
  • the measurement of the lamp current takes place with the aid of the above-described signal SDVI lamp .
  • This signal SDVI lamp is connected to a pin of the ASIC present, to which the measurement of the half-bridge current, the lamp voltage and the lamp current are supplied.
  • a measuring resistor (not shown) may be provided for measuring the lamp current.
  • a current shift occurring between individual lamp branches due to the rectifier effect can also be detected by evaluating the impedance or the power of the lamp 4, the impedance or the power being measured in a known manner.
  • the above-described method for avoiding overcurrent is carried out with the aid of the signal SDEOL.
  • the lamp current is compared with a threshold for the lamp current SOCP. If the measured lamp current exceeds this threshold SOCP, an error condition OCP (Overcurrent Protection) is triggered, i. too high a current flows through the resistor in series with the lower-potential switch of the half-bridge.
  • OCP Overcurrent Protection
  • this threshold value for the lamp current SOCP is set as a function of a detected rectifier effect.
  • the DC component of the lamp voltage Sbase is taken into account when setting the threshold value for the lamp current SOCP. If the DC lamp voltage Sbase increases, the control circuit 3 causes the threshold value for the lamp current SOCP to increase.
  • the threshold value SCCD for the error state with respect capacitive state, and the threshold for the switching of the switches of the half-bridge inverter at zero voltage state adjusted according to the DC lamp voltage.
  • Fig. 3 shows an embodiment of the adaptation of the threshold value SOCP for detecting a fault condition due to an excessive current through the low-potential switch Q2.
  • the low-potential switch Q2 of the half-bridge is turned on and off once per period TP.
  • a period can also be called a clock.
  • the control circuit 3 measures a DC lamp current of 0. At the same time, the control circuit 3 performs overcurrent monitoring. For this purpose, as already described, it compares the current through the switch Q2 with the set threshold SOCP / 0. Since no DC lamp voltage has been measured, the threshold for detecting an overcurrent in the second period remains the same.
  • a DC lamp voltage ⁇ 1 is measured. This value is taken into account according to the invention for adapting the threshold value SOCP.
  • the threshold SOCP is increased accordingly, preferably to SOCP / 0 + ⁇ 2.
  • the adjustment of the threshold value SOCP preferably takes place already one period after detection of a DC lamp voltage. As soon as a variation of the DC lamp voltage is measured by the control circuit 3, in the next clock or in the next Period of threshold SOCP adjusted and recalculated.
  • a variation ⁇ 1 in the DC lamp voltage causes the new threshold value to be changed by the value ⁇ 2.
  • the threshold increases or decreases according to the variation of the DC lamp voltage.
  • ⁇ 2 ⁇ 1.
  • the variation ⁇ 2 of the threshold SOCP is a function of the variation ⁇ 1 in the DC lamp voltage.
  • OCP and CCD thresholds as well as optional other errors such as zero saturation saturation or switching are adaptively adjusted.
  • the reference value SOCP, SCCD
  • SOCP, SCCD the reference value is reset in each cycle in which the higher-potential switch Q1 is turned on.
  • the corresponding thresholds (SOCP, SCCD) may be changed in the subsequent cycle.
  • a shutdown due to an OCP, CCD, and / or another fault condition is dependent on a DC lamp voltage.
  • the shutdown can be done only at a higher (SOCP / 0 + ⁇ 2) or even at a much lower switch current (OCP state).
  • the DC lamp voltage, in Fig. 2 also called baseline or zero line, or this level is at the same time also the level which is related to the non-relative, but absolute thresholds SEOL +, SEOL- for the error states EOL. This means that the corresponding error states are reached when the baseline level reaches the corresponding absolutely predefined switch-off thresholds SEOL +, SEOL-.
  • interference can also be coupled in, for example by clocking other switches in the operating device, PFC switches, heating switches, etc.
  • a further development of the invention thus proposes such short-term disturbances in the adaptation of the various Threshold values SOCP, SCCD should be ignored or not taken into account as far as possible.
  • such disturbances are taken into account only stepwise or clockwise to a certain extent in which, in the course of the adaptation, a maximum variation of a threshold per cycle is determined.
  • Fig. 4 shows a corresponding embodiment of a filter 170.
  • the threshold values SOCP, SCCD are adaptively changed so that it can be prevented that the coupling of said interference due to misinterpretation leads to premature shutdown of the half-bridge or the operating device.
  • the filter 170 prevents such abrupt changes in the DC lamp voltage from leading to undesired error conditions OCP, CCD.
  • the detected signal of the pin SDV lamp is supplied to the filter, for example via a low-pass filter.
  • an analog-to-digital converter (174) may detect and relay the signal.
  • An input comparator 171 feeds an increment-decrement counter 172.
  • a sampling unit 173 is preferably clocked with the clocked inverter 2, e.g. at a period of 50 ⁇ s. The sampling unit 173 provides the adaptation for the threshold values SOCP, SCCD to the output of the filter 170.
  • the input and output signals INPUT, OUTPUT of the filter 170 are in the Fig. 5, 6 shown.
  • the input signal INPUT preferably corresponds to the detected DC component of the lamp voltage or outputs this value again.
  • the output signal OUTPUT corresponds to the adjusted threshold value SOCP, SCCD or Variation of the threshold ⁇ 2 or reflects these values.
  • the maximum variation of the threshold value SOCP, SCCD is limited for each cycle.
  • the filter 170 limits the variation to the value 1 for each cycle.
  • the thresholds can increase or decrease by a maximum of 1 within 50 ⁇ s, which corresponds to the clock speed of the inverter.
  • the values given for the input and output signals are preferably voltages in volts.
  • the value of the output signal increases rapidly, ie already after 0.0025 s, to the predetermined input value of 50. Thereafter, the output signal and thus also the threshold value SOCP, SCCD remain stable at the desired value.
  • the short-term disturbance thus has no negative influence on the error detection OCP, CCD.
  • the adaptive tracking of the threshold values SOCP, SCCD proposed by the invention is particularly advantageous in a state in which a certain EOL contribution is already delivered, but the EOL switch-off thresholds SEOL +, SEOLaber have not yet been reached.
  • the DC offset of the lamp voltage may be subject to certain fluctuations. However, according to the present invention, it is contemplated that these variations adaptively result in the corresponding shift of the turn-off threshold SOCP, SCCD in the next cycle.
  • a possible DC offset at the input SDV lamp can be determined already in the phase before the ignition of the lamp and then taken into account in the operation of the lamp, ie after ignition, in the evaluations of the measurements and when setting the thresholds ,

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  • Circuit Arrangements For Discharge Lamps (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)

Claims (15)

  1. Procédé de fonctionnement d'au moins un moyen d'éclairage (4), comme par ex. une lampe à décharge gazeuse, à partir d'un circuit (2) cadencé,
    un signal de mesure qui reproduit un premier paramètre électrique concernant le fonctionnement du moyen d'éclairage étant, pour l'identification d'un état, en particulier un état d'erreur, du fonctionnement du moyen d'éclairage, comparé à une valeur de seuil (SOCP), la valeur de seuil (SOCP) pouvant être réglée en fonction d'un effet redresseur présentant le moyen d'éclairage (4),
    caractérisé en ce que
    le signal de mesure reproduit le courant traversant un commutateur (Q2) du circuit (2) cadencé et est comparé à la valeur de seuil (SOCP) pour l'identification d'une surintensité de courant (OCP), ou en ce que la valeur de seuil (SCCD) sert à l'identification d'un fonctionnement capacitif du moyen d'éclairage (4).
  2. Procédé selon la revendication 1,
    l'effet redresseur étant détecté par une surveillance directe ou indirecte d'un paramètre d'effet redresseur, et
    le paramètre d'effet redresseur représentant la tension chutant sur le moyen d'éclairage (4), le courant du moyen d'éclairage, l'impédance du moyen d'éclairage et/ou la puissance prélevée par le moyen d'éclairage (4).
  3. Procédé selon la revendication 1,
    l'effet redresseur étant détecté par une surveillance directe ou indirecte d'un paramètre d'effet redresseur, et
    le paramètre d'effet redresseur reproduisant la tension continue (Sbase) chutant sur le moyen d'éclairage (4) ou l'asymétrie du courant de lampe.
  4. Procédé selon l'une des revendications 2 à 3,
    la valeur de seuil (SOCP) étant réglable de telle sorte qu'une variation (Δ1) du paramètre d'effet redresseur entraîne une variation (Δ2) correspondante de la valeur de seuil (SOCP).
  5. Procédé selon l'une des revendications 2 à 4,
    la valeur de seuil (SOCP) pouvant être réglée pour chaque cadence ou respectivement pour chaque période du circuit (2) cadencé.
  6. Procédé selon l'une des revendications 2 à 5, une variation détectée du paramètre d'effet redresseur conduisant, dans la cadence suivante du circuit (2) cadencé, à l'adaptation de la valeur de seuil (SOCP).
  7. Procédé selon l'une des revendications 2 à 6,
    la variation maximale de la valeur de seuil (SOCP) étant limitée à l'intérieur d'une cadence.
  8. Procédé selon l'une des revendications 2 à 7,
    un état d'erreur (EOL) étant déclenché dès que le paramètre d'effet redresseur (Sbase) atteint ou respectivement atteint plusieurs fois une valeur de seuil (SEOL+, SEOL-).
  9. Procédé selon l'une des revendications précédentes,
    la valeur de seuil servant à l'identification d'un ré-enclenchement hors tension d'un commutateur du circuit cadencé.
  10. Procédé de fonctionnement d'au moins un moyen d'éclairage (4), comme par ex. une lampe à décharge gazeuse, à partir d'un circuit (2) cadencé,
    un signal de mesure qui reproduit un paramètre électrique concernant le fonctionnement du moyen d'éclairage étant, pour l'identification d'un état d'erreur du fonctionnement du moyen d'éclairage, comparé à une valeur de seuil (SOCP, SCCD), la valeur de seuil pouvant être réglée en fonction d'une composante continue de la tension du moyen d'éclairage (Sbase),
    caractérisé en ce que
    le signal de mesure reproduit le courant, traversant un commutateur (Q2,) du circuit cadencé (2), et est comparé à la valeur de seuil (SOCP) pour l'identification d'une surintensité de courant (OCP), ou en ce que la valeur de seuil (SCCD) sert à l'identification d'un fonctionnement capacitif du moyen d'éclairage (4).
  11. Procédé de fonctionnement d'au moins un moyen d'éclairage (4), comme par ex. une lampe à décharge gazeuse,
    - un effet redresseur du moyen d'éclairage (4) étant déterminé de telle sorte que, à partir d'une comparaison d'une valeur (Sbase) reproduisant cet effet redresseur avec une valeur de seuil (SEOL+), il est possible de déduire un état d'erreur (EOL),
    - l'effet redresseur déterminé étant pris en compte lors de la surveillance d'un autre état d'erreur.
  12. Circuit de commande (3), en particulier ASIC ou microcontrôleur, qui est conçu pour un procédé selon l'une des revendications précédentes.
  13. Appareil de fonctionnement pour des moyens d'éclairage, en particulier pour des lampes à décharge gazeuse,
    présentant un circuit de commande selon la revendication 12.
  14. Système d'éclairage, présentant une unité de commande et au moins un appareil de fonctionnement selon la revendication 13 qui lui est connecté de préférence par le biais d'une ligne de bus.
  15. Circuit (1) pour le fonctionnement d'un moyen d'éclairage (4), comme par exemple une lampe à décharge gazeuse,
    présentant
    - un circuit en demi-pont ou en pont intégral (2) destiné à la fourniture d'une tension d'alimentation pour le moyen d'éclairage (4) au moins au nombre de un, et
    - un circuit de commande (3) destiné à la régulation du fonctionnement des moyens d'éclairage (4) et/ou à l'identification d'erreurs, un signal de mesure qui reproduit un premier paramètre électrique concernant le fonctionnement du moyen d'éclairage étant, pour l'identification d'un état d'erreur du fonctionnement du moyen d'éclairage, comparé à une valeur de seuil (SOCP), et
    la valeur de seuil (SOCP) pouvant être réglée en fonction d'un effet redresseur présentant le moyen d'éclairage (4),
    caractérisé en ce que
    le signal de mesure reproduit le courant traversant un commutateur (Q2) du circuit en demi-pont ou en pont intégral (2) et, pour l'identification d'une surintensité de courant (OCP), est comparé à la valeur de seuil (SOCP), ou en ce que la valeur de seuil (SCCD) sert à l'identification d'un fonctionnement capacitif du moyen d'éclairage (4).
EP12824791.3A 2011-12-23 2012-12-21 Procédé, appareillage d'alimentation et système d'éclairage, avec détection d'effet de redressement de lampes Not-in-force EP2796012B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102011089890 2011-12-23
DE102012207002A DE102012207002A1 (de) 2011-12-23 2012-04-27 Verfahren, Betriebsgerät und Beleuchtungssystem
PCT/AT2012/000322 WO2013090955A1 (fr) 2011-12-23 2012-12-21 Procédé, appareillage d'alimentation et système d'éclairage, avec détection d'effet de redressement de lampes

Publications (2)

Publication Number Publication Date
EP2796012A1 EP2796012A1 (fr) 2014-10-29
EP2796012B1 true EP2796012B1 (fr) 2017-09-13

Family

ID=48575802

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12824791.3A Not-in-force EP2796012B1 (fr) 2011-12-23 2012-12-21 Procédé, appareillage d'alimentation et système d'éclairage, avec détection d'effet de redressement de lampes

Country Status (4)

Country Link
EP (1) EP2796012B1 (fr)
CN (1) CN104094674B (fr)
DE (1) DE102012207002A1 (fr)
WO (1) WO2013090955A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021129077A1 (de) 2021-11-09 2023-05-11 Vossloh-Schwabe Deutschland Gmbh LED-Betriebsschaltung mit Betriebsüberwachung und Verfahren zum Betrieb von LEDs

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DE19708792A1 (de) * 1997-03-04 1998-09-10 Tridonic Bauelemente Verfahren und Vorrichtung zum Erfassen des in einer Gasentladungslampe auftretenden Gleichrichteffekts
FI102347B (fi) * 1997-06-18 1998-11-13 Helvar Oy Lampun tasasuuntauksen tunnistuspiirillä varustettu elektroninen liitä ntälaite
DE19837728A1 (de) * 1998-08-20 2000-02-24 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Schaltungsanordnung zum Betrieb mindestens einer Entladungslampe
DE10108138A1 (de) * 2001-02-20 2002-08-29 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Schutzschaltung für eine Leuchstofflampe
WO2003041457A1 (fr) * 2001-11-07 2003-05-15 Koninklijke Philips Electronics N.V. Arrangement de circuit ballast assurant le fonctionnement d'une lampe a decharge, avec detection de la fin de duree de vie de cette lampe
DE10209620A1 (de) * 2002-03-05 2003-09-25 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh EOL-Erkennung mit integrieter Wendelabfrage
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Also Published As

Publication number Publication date
EP2796012A1 (fr) 2014-10-29
DE102012207002A1 (de) 2013-06-27
WO2013090955A1 (fr) 2013-06-27
CN104094674A (zh) 2014-10-08
CN104094674B (zh) 2016-08-24

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