AT16154U1 - Bulb converter and light bulb module with two-wire communication - Google Patents

Abstract

The invention relates to an operating device for the operation of a lighting module (1), preferably at least one LED, as a load, provided comprising a control circuit (SEK), a clocked AC / DC converter (5) with a switch, starting from the control circuit (SEK) is clocked, and connections (A1, A2) for the power supply of the lamp module, wherein the control circuit (SEK) is adapted, at a connected as a load on the terminals (A1, A2) lamp module (1 ), in particular in a start-up phase after activating a supply voltage of the operating device, to detect a load change on the basis of an operating parameter of the clocked AC / DC converter (5) and to store it as an operating or identification parameter of the lighting module (1).

Description

description

LUMINAIRE CONVERTER AND LUMINAIRE MODULE WITH TWO-WIRE COMMUNICATION The invention relates to an operating device for operating at least one illuminant module and an illuminant module with at least one illuminant, in particular at least one LED, and a method for transmitting Information or parameters between the control gear and the lamp module. A two-wire communication is used in particular for the transmission of the information, which means that no separate channel is provided for the transmission of information from or to the operated lamp module and / or to the operating device or a lighting converter of the operating device.

[0002] “Two-wire communication” is therefore to be understood without restriction to the specific implementation that, according to the invention, information is not transmitted via a physically separate channel, but rather via one or more electrical supply lines. However, additional information transmission via a separate channel is not excluded, but is preferably not used.

In particular, the invention relates to a lamp module, a lamp converter or converter and a method that enables operating parameters of the lamp module to the lamp converter without a specific communication line between the lamp module and the lamp converter to transfer. An AC / DC converter (for example a power factor correction circuit PFC) can be used as the light source converter. In the following, the phrase illuminant converter or AC / DC converter is used as a representative.

Approaches are known from the prior art for specifying an illuminant converter operating parameter for a connected illuminant module. This is e.g. Necessary if different forward currents are required for different illuminant modules in order to control the LED section or the illuminant module and to generate light emission on one illuminant. Operating parameters can be a required forward current or a desired or forward voltage to be applied.

It is also known that the operating parameters for a connected lamp module can be set on a lamp converter via dip switches or resistors. This requires user interaction with the lamp converter.

It is also known to use configuration resistors in the lamp module in order to specify the required operating parameters for the lamp converter. This requires additional connections and, on the other hand, user interaction with the lamp converter.

It is also known to provide a separate digital signal channel on the lamp converter in order to transmit the necessary operating parameters. This requires additional components that increase the costs for a lamp converter or the control gear.

The illuminant module can also be equipped with a memory, for example an EPROM, from which the illuminant converter can read information relating to the illuminant module and in particular the operating parameters to be set.

It is also known on the module side that a circuit of the illuminant module is automatically activated or deactivated depending on an applied supply voltage, so that the illuminant module can take up power without the LED path through the illuminant module is operable, operated. The illuminant converter can then record the power consumption or a change in the power consumption of the illuminant module in a readout window and, based on this, set or deduce operating parameters or maintenance parameters of the illuminant module.

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AT16 154U1 2019-02-15 Austrian

Patent Office The invention now relates particularly to transmitting information from the lamp module back to the lamp converter or to a power factor correction circuit (PFC). This is then read out by the lamp converter, the

Illuminant module can generate a targeted modulation of the load behavior.

The invention therefore provides an operating device, a method, a lamp module and a lighting system according to the independent claims. Further developments of the invention are the subject of the dependent claims.

In a first aspect, an operating device for the operation of a lamp module, preferably at least one LED, is provided as a load, comprising a control circuit, a clocked AC / DC converter with a switch, which is clocked starting from the control circuit , and connections for the voltage supply of the illuminant module, the control circuit being designed to change the load on the basis of an operating parameter of the clocked AC / DC when an illuminant module is connected to the connections as a load, in particular in a starting phase after activation of a supply voltage of the operating device Transducer to record and save as operating or identification parameters of the lamp module.

[0013] The clocked AC / DC converter can be a power factor correction circuit.

[0014] The DC / DC converter can be part of a lamp converter.

The control circuit can detect and evaluate the change in load based on a change in operating parameters, in particular by monitoring a voltage generated by the AC / DC converter.

The control circuit can change a clocking of the AC / DC converter in response to the detected load change or a detected changed output voltage.

The change in load can display temperature information and / or information about the nominal current of the lamp module, in particular information about the current through the lamp.

The control circuit can modulate the voltage supplied to the lamp module.

In a further aspect, a lamp module is provided, preferably an LED module, having connections for voltage supply, at least one adjustable resistor and a control unit, the control unit being set up to set, activate and activate the at least one adjustable resistor / or to deactivate and thus generate a change in load of a load operated by the lamp module. An adjustable resistor is to be understood as a mechanically or electronically changeable or adjustable resistor, but also the selective activation / deactivation of a simple ohmic resistor. Several such resistors can also be provided.

The resistor can be provided separately from the lamp module at the connections.

The control unit of the lamp module can only generate a change in the load in a starting phase, i.e. after its activation, preferably by establishing a voltage supply. Activation of the illuminant module means in particular an initial electrical supply, starting from the illuminant converter or the operating device.

The control unit of the lamp module can modulate the load, in particular by setting, activating and / or deactivating a resistor.

[0023] The control unit can transmit information by means of amplitude modulation but also a time duration and / or a frequency of the load change.

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Patent Office [0024] The control unit can detect a modulation of a supply voltage, in particular a bus voltage, and in particular the supply voltage with regard to a

Evaluate modulation. The bus voltage is generated in particular by the AC / DC converter.

The control unit can control a switch of the lamp module, and switch on or activate and / or switch off or deactivate the resistor by means of the switch and thus generate the load change.

In response to a detected modulation of the supply voltage, the control unit can generate a load change and / or a number of load changes, and in particular control the switch.

The control unit can control the switch depending on the detected modulation.

In yet another aspect, a lighting system is provided, comprising an operating device as described above and a lighting module as described above, the lighting module with the operating device us especially the AC / DC converter directly or indirectly via only a two-wire connection is connected.

[0029] In yet another aspect, a method for operating a lighting device, preferably an operating device as described above for operating at least one LED, is provided, a lighting module, as described above, with a clocked converter of the operating device via a two-wire Connection is connected and the illuminant module operates and changes a load, and by means of the change in the load transmits a communication signal to the clocked converter via the two-wire connection.

The invention will now be described with reference to the figures. Show it:

1 schematically shows a lamp converter and a lamp module according to the invention;

2 shows exemplary curve profiles of relevant parameters.

According to the present invention, an identification or other transmission of a parameter from the lamp module to the lamp converter or a clocked AC / DC converter of the converter is carried out by reading an electrical parameter on the lamp converter or performed actively by means of a switch clocked power factor correction circuit (PFC circuit), in particular via a bus voltage Vbus generated by the power factor correction circuit.

In a starting phase of the operation of the lamp module, a load resistance of a defined or variable value in the lamp module can be activated, i.e. switched on, or deactivated, i.e. switched off or set, by a control circuit, so as to adjust the load behavior of the lamp - Modify or modulate the module in a targeted manner. The bus voltage is then readjusted accordingly on the lamp converter or the power factor correction circuit.

This readjustment of the bus voltage, which takes place in particular by changing the clocking parameters of the clocked switch of the lamp converter (for example changing a dead time, a switch-on time and / or a switch-off time of the switch, preferably the power factor correction circuit) can also be carried out in an analog manner can be evaluated digitally in the case of more complex protocols as a return channel for the information from the lamp module to the lamp converter.

In particular, information relating to a nominal current of a lamp operated by the lamp module, in particular at least one LED, but also temperature information, signs of aging or parameters changed by aging etc. can be reported back to the power factor correction circuit or the lamp converter ,

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Patent Office Information can be transmitted by means of an amplitude, but also over a period of time, frequency, etc. of the load change. It can be provided that a control circuit of the lamp module has a plurality of resistors that can be selectively switched on and off, i.e. can be activated or deactivated, or can be set in order to transmit information on the bus line back to the lamp converter or the AC / DC converter.

In addition, a forward channel can be provided by changing the voltage on the lamp module. This forward channel from the lamp converter to the lamp module can be used, for example, to retrieve information from the lamp module. In the lamp module, a control circuit then evaluates a defined input voltage change in such a way that it causes the load current, for example by switching one or more ohmic resistors, for a defined period of time, which in turn transmits information to the lamp converter. This can lead to a status query on the lamp module, in particular a cyclical query (polling) on the lamp module by the lamp converter.

In addition to the possibility of feedback during a start phase, i.e. Within a predetermined period of time after activation of the lamp converter, after transmission of a certain signal, or after information is retrieved by the lamp converter, it is also conceivable that an intelligent circuit, for example an IC, ASIC and or a microcontroller of the lamp module , in particular in the event of error conditions, causes feedback on the load converters to be defined on its own.

As stated, the lamp converter can be an AC / DC converter that generates a modulation of the load, in particular via an adjustable resistor R _mod . It is to be understood that a plurality of resistors can also be provided, which are arranged in parallel in the illuminant module, for example, and which can be selectively switched on or off in order to generate different load jumps. The at least one adjustable resistor R _mod is arranged parallel to the load and in particular the lamp (LED). A communication signal is then detected via the two-wire supply line by monitoring the supply voltage or an output signal from a control unit.

The lamp converter can be an AC / DC converter, in particular a power factor correction circuit (PFC). The modulation can take place by switching resistors on and off in the illuminant module or by setting a resistance. A control circuit can be provided in the illuminant module, which generates a corresponding activation / deactivation / setting of the resistors. It can also be provided that the control unit is provided separately from the illuminant module. Communication can now take place directly between the DC / DC converter and the load or the lamp module or across additional stages, for example a further additional converter.

Fig. 1 shows a schematic and exemplary representation of a lamp converter with a lamp module 1 that has an adjustable resistor R _mod , which is arranged in parallel with a lamp 2, and which can be activated by a switch S. The switch is controlled by a control unit SEM. The lamp converter 3 is shown in particular as a combination of an AC / DC converter 4 as a rectifier with a downstream DC / DC converter 5, for example a power factor correction circuit (PFC). The DC / DC converter is controlled by a control circuit SEK, and in particular a power transmission of the lamp converter 3 is set by clocking a switch provided in the DC / DC converter 5 by the control circuit SEK.

The AC / DC converter, which generates a _bus voltage V _bus , which can serve as the supply voltage for the lamp module, is now trying to constantly detect the load it has identified

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Hold patent office, whereby a modulation by the control unit of the lamp module, or one

Deactivation / activation / setting of the adjustable resistance R _mod , can be recognized.

It can also be provided that the lamp converter 3 supplies more than one lamp module 1. Correspondingly, the lamp converter 3 can also communicate with more than one lamp module 1, or a plurality of lamp modules can transmit information to the lamp converter 3.

By modulating the bus voltage Vbus, e.g. an identifier of a lamp module can be transmitted to the lamp converter. In addition, the lamp converter can query several modules by using an identifier or within different time windows.

2 therefore shows exemplary curves which on the one hand switch the switch S in the lamp module 1 and a resultant change in the bus voltage and a resultant change in a clocking parameter, here for example a switch-on time T _{on of} the switch of the AC / DC converter 5. It should be noted in particular that when the switch S of the lamp module 1 is activated by the control unit SEM, a load step can be seen (see curve S) which produces a change in the bus voltage Vbus. This is in turn corrected by changing the switch-on time Ton of the switch of the DC / DC converter, for example a PFC switch by activating the switch, whereby the modulation is recognized. Alternatively or additionally, a switch-off period, a dead time and / or a frequency of the activation of the switch S can be changed by the control unit SEM.

In the illuminant converter 3, a control circuit SEK thus clocks a converter switch, the illuminant converter 3 providing connections A1, A2 for supplying voltage to the illuminant module 1. The control circuit SEK of the lamp converter 3 can detect a load change based on an operating parameter and in particular the bus voltage Vbus of the clocked AC / DC converter 5, in particular in a start phase after activation of a supply voltage of the operating device or the lamp converter 3.

This detected operating parameter can then be an identification parameter which, for example, provides information about a type of the connected illuminant 2 or the illuminant module 1. The DC / DC converter 5 can therefore correspondingly set an operating parameter for controlling the lamp module 1. The control circuit of the lamp converter SEK can then detect and evaluate a load change generated by the lamp module 1 on the basis of the operating parameter changes, in particular by monitoring the voltage Vbus generated by the AC / DC converter 5.

Since, for example, the operating parameters of the illuminant module 1 can change due to external influences, for example due to heating or signs of aging, the AC / DC converter 5 can be set accordingly and react accordingly to parameter changes.

Of course, the control unit SEM of the lamp module 1 can also generate a sequence of load changes, in particular in the presence of a plurality of adjustable resistors, in order to allow more complex communication with the lamp converter 3 or the operating device.

It is to be understood that a corresponding configuration of a module to be connected to an operating device can also be used for other areas of building technology devices. In principle, it is possible by means of a load change according to the invention, for example by activating or deactivating an adjustable resistance or setting a resistance value, to transmit information back via a two-wire line to the operating device of the corresponding module.

Claims (10)

Expectations 1. Operating device for the operation of a lamp module (1), preferably at least one LED, as a load, comprising: -a control circuit (SEK), - A clocked AC / DC converter (5) with a switch which is clocked starting from the control circuit (SEK), and Connections (A1, A2) for the illuminant module, characterized in that the control circuit (SEK) is designed for a illuminant module (1) connected as a load to the connections (A1, A2), in particular in a starting phase After activating a supply voltage of the operating device, a change in load is detected using an operating parameter of the clocked AC / DC converter (5) and stored as an operating or identification parameter of the illuminant module (1). 2. Operating device according to claim 1, characterized in that the clocked AC / DC converter (5) is an actively clocked by means of a switch power factor correction circuit; and / or that the AC / DC converter (5) is part of a lamp converter (3). 3. Operating device according to one of the preceding claims, characterized in that the control circuit (SEK) is designed to detect and evaluate the change in load based on a change in operating parameters, in particular by monitoring a voltage (Vbus) generated by the AC / DC converter; and / or that the control circuit (SEK) changes a timing of the AC / DC converter (5) in response to the detected load change; and / or that the control circuit (SEK) is set up to modulate the voltage supplied to the illuminant module (1). 4. Operating device according to one of the preceding claims, characterized in that the change in load indicates temperature information and / or information about the nominal current of the lamp module (1), in particular information about the current through the lamp (2). 5. illuminant module (1), preferably an LED module, having connections for voltage supply, and at least one adjustable resistor (R _mod ) and a control unit (SEM), characterized in that the control unit (SEM) is set up to the Set, activate and / or deactivate at least one adjustable resistor (Rmod) and thus generate a change in load of a load operated starting from the illuminant module (1). 6. illuminant module (1) according to claim 5, characterized in that the control unit (SEM) of the illuminant module (1) is set up to generate a change in the load only in a starting phase, i.e. after its activation, preferably by establishing a voltage supply; and / or that the control unit (SEM) of the illuminant module (1) is set up to modulate the load, in particular by setting, activating and / or deactivating a resistor (Rmod); and / or that the control unit (SEM) is set up to transmit information by means of amplitude modulation, a time period and / or a frequency of the load change. 7. illuminant module (1) according to claim 5 or 6, characterized in that the control unit (SEM) is set up to detect a modulation of a supply voltage (Vbus) and in particular to evaluate the supply voltage (Vbus) with respect to a modulation; and or 6.8 AT16 154U1 2019-02-15 Austrian Patent office that the control unit (SEM) is set up to control a switch (S) of the lamp module (1) and to activate and / or deactivate the resistor (R _mod ) by means of the switch (S) and thus to generate the load change. 8. illuminant module (1) according to one of claims 5 to 7, characterized in that the control unit (SEM) is set up to respond to a detected modulation of the supply voltage (Vbus) a load change and / or a number of load changes generate, and in particular to control the switch (S); and / or that the control unit (SEM) is set up to control the switch (S) depending on the detected modulation. 9. Lighting system, comprising an operating device according to one of claims 1 to 4 and a lamp module (1) according to one of claims 5 to 8, characterized in that the lighting module (1) with the operating device and in particular the AC / DC converter (5) is connected directly or indirectly via only a two-wire connection. 10. A method for operating a lamp operating device, preferably an operating device according to one of claims 1 to 4 for operating at least one LED, characterized in that a lamp module (1), preferably according to one of claims 5 to 8, with a clocked converter ( 5) the operating device is connected via a two-wire connection and that the illuminant module (1) operates and changes a load, and transmits a communication signal to the clocked converter (5) via the two-wire connection by changing the load.