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The invention relates to a circuit and a method for operating at least one lamp.
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There are different electronic control gear for bulbs known. For example, by means of such electronic control gear at least one light source, for. B. at least one lamp and / or at least one light module, driven and possibly their or its brightness can be adjusted.
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It is disadvantageous that different operating modes of the electronic control gear require a complex pre-configuration. This is inflexible and requires considerable logistical effort because the preconfigured operating devices must then be assigned to the bulbs for which they have been configured.
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The object of the invention is to avoid the disadvantages mentioned above and in particular to provide a flexible and efficient solution to configure operating devices.
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This object is achieved according to the features of the independent claims. Further developments of the invention will become apparent from the dependent claims.
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To solve the problem, a circuit is proposed for operating at least one lamp
- With at least two inputs to which a mains voltage can be applied,
- - with a control input,
- With at least one output for controlling the at least one luminous means,
- - It is detectable whether the control input is open or connected to one of the inputs.
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It should be noted that several control inputs can be provided. Accordingly, it can be determined per control input whether it is open or connected to the mains voltage.
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In particular, it can be determined to which of the inputs of the mains voltage the control input is connected. Thus it can be determined whether the control input is connected to the phase or to the neutral conductor of a mains voltage. In particular, it can be determined with which phase (eg of a three-phase network) the control input is connected.
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For example, a potential difference between the control input and one of the at least two inputs can be determined. In this case, for example, a current through a resistor between the control input and one of the at least one inputs can be measured (preferably, this measurement can be clocked to minimize losses). Alternatively or additionally, a phase position at the control input with respect to one of the inputs can be determined. Based on a comparison with the reference potential (eg ground), it can be determined which of the inputs is connected to one phase and which of the inputs is connected to the neutral conductor (usually the neutral conductor and the earth are (approximately) at the same potential).
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It should also be noted that the control input can be connected directly or indirectly to one of the inputs, via which the mains voltage can be applied. In particular, it is possible that the connection to one of the inputs of the mains voltage means that it (or a phase or a neutral conductor) is detectable.
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The control input is open when it is not connected to any of the inputs of the mains voltage.
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The bulb is z. Example, to a lamp or a light source, which may be part of a lighting device or a light module.
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The mains voltage can also be a voltage with several phases. In particular, phases of a three-phase network can be provided.
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For example, it is possible that the circuit is supplied from a phase to a neutral conductor. The control line may be connected or open to one of three phases or the netural conductor of a three-phase network. In particular, a plurality of control lines can be provided, which are each connected to one of several phases or the neutral conductor of a three-phase network or open.
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A further development is that the control input by means of an electronic switch or by means of a manually operable switch with one of the inputs of the mains voltage is connectable.
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The electronic switch may be a transistor, a mosfet, a relay, or any electronic component that senses a switching function.
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Also, the control input may be connected to a shorting bridge or open.
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Another development is that the electronic switch based on a signal a sensor, in particular a motion sensor or a brightness sensor can be controlled.
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Thus, the sensor may cause a change in the switching state of the electronic switch which connects or disconnects the control input to the mains voltage (or to one of the inputs of the circuit connected to the mains voltage).
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In particular, it is a development that a first operating mode is adjustable, provided that the control input is open and that a second operating mode is adjustable, if the control input is not open.
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It is also a development that two second operating modes are distinguishable, depending on which input to which the mains voltage can be applied, the control input is connected.
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In particular, the two inputs of the mains voltage are distinguishable from each other on the basis of the circuit presented here. For example, different phases of a multiphase mains voltage can be distinguished. Thus, the (at least one) control input z. B. connected to one of the phases, be open, short-circuited or connected to the neutral conductor.
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Furthermore, it is a further development that a further operating mode can be set if a change in the signal at the control input can be detected in the first operating mode.
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An additional development is that a further operating mode is adjustable, provided that in the second operating mode, a change of the signal at the control input is detectable.
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It should be noted that the further operating mode may be a third operating mode. Different operating modes (three and four) can also be distinguished depending on whether a change in the signal detected at the control input is detected in the first or in the second operating mode.
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A next development consists in that, in the further operating mode, a control of the at least one lighting means takes place dynamically as a function of the signal at the control input.
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Thus, the control of the at least one light source z. B. be performed in a clock of the signal applied to the control signal. Thus, an efficient change from a static operating mode (first or second operating mode) to a dynamic operating mode is possible.
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In particular, the clock can be used as an alternating signal that switches between groups of light sources.
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One embodiment is that, per operating mode, a brightness and / or color information for the at least one lighting means can be controlled statically or dynamically changeable.
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An alternative embodiment consists in that a plurality of light sources are provided, which can be controlled the same or different per operating mode.
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A next embodiment is that the at least one luminous means comprises at least one of the following light sources:
- A fluorescent lamp;
- A semiconductor light-emitting element, in particular a light-emitting diode or an organic light-emitting diode;
- A light module;
- - a lamp.
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It is also an embodiment that the circuit is arranged in an electronic operating device and / or in a lamp.
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The above-mentioned object is also achieved by a luminaire or a lighting device or an electronic operating device comprising at least one of the circuits described here.
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Also, the above-mentioned object is achieved by means of a method for operating at least one luminous means,
- In which a mains voltage is applied to at least two inputs,
- In which the at least one luminous means is activated in dependence on a signal which is detected at a control input,
- - It is detected whether the control input is open or connected to the mains voltage.
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The above-mentioned developments of the circuit apply to this method accordingly.
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One embodiment is that it is detected whether the control input is open or to which input of the mains voltage it is connected.
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It is also an embodiment that a change of an operating mode takes place if a change of the signal detected at the control input is detected.
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Embodiments of the invention are illustrated and explained below with reference to the drawings.
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Show it:
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1 by way of example a block diagram comprising an electronic operating device, to which a phase and a neutral conductor of a mains voltage is connected, which has at least one control input and which can be used to control at least one light-emitting means;
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2 a schematic block diagram based on the in 1 shown representation, wherein a control input via an electronic switch with the phase L is connectable;
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3A a signal diagram illustrating an operating mode 1 and a transition to an operating mode 3 ;
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3B a signal diagram illustrating an operating mode 2 and a transition to the operating mode 3 ;
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4 a schematic flow diagram illustrating the change between the illustrated operating modes 1 to 3 ;
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5 an exemplary state transition diagram illustrating how a plurality of operating modes are adjustable from a single control input.
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The solution proposed here makes possible a flexible configuration of an electronic operating device for controlling (at least) one light source.
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The lighting means may be a light module or a lamp. In particular, the luminous means may comprise a fluorescent lamp and / or a semiconductor light-emitting element (eg a light-emitting diode).
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The proposed solution may be part of an electronic control gear and / or part of the bulb. In particular, the solution may be part of a luminaire.
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1 shows an example of a block diagram comprising an electronic control gear 100 , to which a phase L and a neutral conductor N of a mains voltage 101 connected.
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Furthermore, the electronic control gear 100 at least one control input on; in 1 are exemplary two control inputs 102 and 105 shown.
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A dashed line 103 indicates that the control input 102 is connectable to the neutral conductor N and a dashed line 104 indicates that the control input 102 can be connected to the L phase. Furthermore, the control input 102 open, ie not connected to the neutral conductor N nor to the phase L.
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The same applies to the other control input 105 , For clarity, the control input 105 in the exemplary arrangement according to 1 open, ie not connected to the phase L nor to the neutral conductor N.
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The electronic control gear 100 has several outputs 107 . 109 . 111 and 113 on that with bulbs 108 . 110 . 112 . 114 are connected. At the bulbs 108 . 110 . 112 . 114 For example, these are semiconductor light elements and / or fluorescent lamps. Basically, the most diverse bulbs of the electronic control gear 100 controllable. The electronic control gear 100 and the bulbs 108 . 110 . 112 . 114 are also with a reference potential 106 , z. B. a protective conductor (ground potential) connected.
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2 shows a schematic block diagram based on the in 1 shown illustration. In contrast to 1 is in 2 only one control input 102 represented by an electronic switch 202 connected to the L phase. At the electronic switch 202 can it be z. B. to act a transistor or a Mosfet. The electronic switch 202 can via a drive signal, which in 2 exemplified by a sensor 201 (or an evaluation unit comprising a sensor) is provided, are controlled. Alternatively, the drive signal from the electronic control gear 100 to be generated.
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At the sensor 201 For example, it is a brightness or motion sensor that provides a signal to drive the electronic switch 202 serves.
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Furthermore, in 2 exemplary two outputs 107 . 109 of the electronic control gear 100 shown, based on the output 107 the bulb 108 and based on the output 109 the bulb 110 is controllable.
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Thus, the control input 102 optionally permanently open (operating mode 1 ) or permanently over the switch 202 connected to phase L (operating mode 2 ). Furthermore, both in the operating mode 1 as well as in the operating mode 2 a change in the switching state of the switch 202 be achieved by the sensor 201 (or the associated evaluation unit) the switch 202 either opens or closes. In other words, there is a transition to an operating mode 3 as soon as a change of the voltage potential at the control input 102 is recognized.
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In 2 is exemplified that the electronic control gear via the sensor 201 the switch 202 controls. In this respect, z. Example, a processor, a control device or be provided via a manually actuable actuator, the switch 202 controls.
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The proposed solution has the advantage that the electronic operating device can operate a plurality of light sources or light sources (eg fluorescent lamps or semiconductor light elements) independently of one another and can be used flexibly on the basis of the at least one preferably digital control input.
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3A and 3B each show signal diagrams for illustrating the above-mentioned operating modes.
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In the operating mode 1 is the control input 102 open when the mains voltage (phase L) is present. The electronic control gear 100 operates the two bulbs 108 and 110 simultaneously with full brightness. It thus comes in the operating mode 1 for example, to a light color mixture between different. bulbs 108 and 110 (These bulbs may be of different types and / or emit light of different colors).
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In the operating mode 2 is the control input 102 connected to the phase L of the mains voltage. The electronic control gear 100 operates the two bulbs 108 and 110 simultaneously with reduced (eg half) brightness (eg dimmed via a suitable modulation of a bridge circuit).
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It should be noted that in the individual operating modes, the brightness of the individual bulbs 108 . 110 can be different. In particular, the brightnesses can also be modulated during the individual operating modes (for example, a light source can be automatically brightness-modulated according to a predetermined pattern). It is also possible that z. B. Color gradients are traversed using a single light source during an operating mode (eg multicolored light modules can be controlled in different colors during the operating mode).
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The operating mode 3 is reached at the first change of the potential at the control input 102 , so if in the operating mode 1 or in the operating mode 2 the potential at the control input 102 changes. By way of example, in the operating mode 3 one of the state of the control input 102 dependent control of the two bulbs 108 and 110 take place: lies at the control entrance 102 a voltage, so is the bulb 108 turned on and the bulb 110 is switched off; is located at the control input 102 no voltage, so is the bulb 108 switched off and the bulb 110 is on.
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This corresponds, for example, to automatic illumination of a corridor which is controlled as a function of a motion sensor: the motion sensor detects a movement and causes the switch 202 in 2 is closed. The electronic control gear 100 detects the applied phase L at the control input 102 and turns on the bulb 108 one and the bulb 110 out. At the bulb 108 it can be several fluorescent lamps to illuminate the corridor and the illuminant 110 it can be an emergency lighting, z. B. by means of energy-saving Halbleitleuchtelemente act.
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4 shows a schematic flow diagram for illustrating the change between the above-described operating modes 1 to 3 ,
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In one step 401 becomes the mains voltage 101 with the electronic control gear 100 connected. In one step 402 it is queried whether the control input 102 is open. If this is the case, it will be in one step 404 in the operating mode 1 changed. Is the control input 102 However, not open, so in one step 403 in the operating mode 2 changed.
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Both on the step 403 as well as on the step 404 follows a step 405 in which it is determined if the signal is at the control input 102 has changed. If not, the step will be in a loop 405 repeated. Should the signal be at the control input 102 have changed to one. step 406 branches and the operating mode 3 set.
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It should be noted that each mode of operation may be flexibly configured statically or with varying drive signals.
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5 shows an exemplary state transition diagram illustrating how a plurality of operating modes can be set from a single control input. Correspondingly, a plurality of control inputs can also be provided so that an even greater number of distinguishable operating modes can be set.
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Starting from a start state 500 finds a change
- - in an operating mode 501 instead, if the control input ST is open,
- - in an operating mode 502 instead, if the control input ST is connected to the phase L,
- - in an operating mode 503 instead, if the control input ST is connected to the neutral conductor N.
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Based on the operating mode 501 finds a change
- - in an operating mode 504 instead, if there is a change in the signal at the control input ST and the control input ST is connected to the phase L,
- - in an operating mode 505 instead, if there is a change in the signal at the control input ST and the control input ST is connected to the neutral conductor N.
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Based on the operating modes 502 or 503 finds a change to an operating mode 506 instead, if a change of the signal at the control input ST is such that the control input ST is open (neither connected to the phase L nor to the neutral conductor N).
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LIST OF REFERENCE NUMBERS
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- 100
- electronic control gear (also referred to as electronic ballast)
- 101
- Mains voltage (with connections L and N)
- 102
- control input
- 103
- (optional) connection of the control input 102 with the neutral conductor N
- 104
- (optional) connection of the control input 102 with the phase L
- 105
- control input
- 106
- Reference potential (eg earth)
- 107
- output
- 108
- Lamp
- 109
- output
- 110
- Lamp
- 111
- output
- 112
- Lamp
- 113
- output
- 114
- Lamp
- 201
- Sensor (possibly with associated evaluation unit)
- 202
- electronic switch
- 401 to 406
- Steps of the flowchart
- 500
- Start state
- 501 to 506
- operating modes
- L
- phase
- N
- neutral
- ST
- control input
