DE102016116483B4 - Error-prone and energy-efficient power supply for LEDs based on the detection of voltage drops across the LEDs and their power sources - Google Patents

Abstract

A device for supplying a plurality of m * n LED groups (L _1,1 , L _{, 1,2} , ..., L _{1, j 1,} ... L _{1, n 1,} L _2,1 , L, _{2 , 2} , ..., L _{2, j2} , ... L _{2, η 2} ; ......... L _{k, 1} , L, _{k, 2} , ..., L _{k, jk,.} ..L _{k, nk} ; ........ L _{m, 1} , L, _{m, 2} , ..., L _{m, j m} , ... L _{m, nm} ), which are located in m LED Assemblies (LB ₁ ... LB _m ) are located, comprising with electrical energy
- At least one control IC (IC _{k, Ik} ) per LED assembly (LB _k ) of the m LED assemblies (LB ₁ ... LB _m ), which is a bus slave of a bus master;
- A plurality of current sources (Iq _1,1 , Iq _1,2 , .... Iq _{1, j1} , .... Iq _{1, n1} , Iq _2.1 , Iq _2.2 , .... Iq _{2nd , j2} , .... Iq2 _{, n2} ; Iqk _{, 1} , Iqk _{, 2} , .... Iqk _{, jk} , .... Iqk _{, nk} ; Iqm _{, 1} , Iqm _{, 2} , .... Iq _{m, jm} , .... Iq _{m, nm} ), each of the said LED groups (L _1,1 , L, _1,2 , ..., L _{1, j1} , ... L _{1, n 1,} L _2,1 , L, _2,2 , ..., L _{2, j 2} , ... L _{2, n 2} ; _......... L _{k, 1} , L, _{k , 2} , ..., L _{k, jk} , ... L _{k, n k} ; L _{m, 1} , L, _{m, 2} , ..., L _{m, j m} , ... L _{m, nm} ) .
Wherein each of the current sources (Iq _{k, j} , with 1≤k≤m and 1≤j≤n _m ) is arranged and provided for, in proper operation, each having an electric current (I _{k, j} , with 1≤k≤ m and 1≤j≤n _m ), by the respective connected LED group (L _{k, j} , with 1≤k≤m and 1≤j≤n _m ) of the plurality of LED groups (L _1,1 , L , _1,2 , ..., L _{1, j1} , ... L _{1, n 1,} L _2,1 , L, _2,2 , ..., L _{2, j 2,} ... L _{2, n 2} ; L _{k, 1} , L, _{k, 2} , ..., L _{k, j k,} ... L _{k, n k} ; _......... L _{m, 1} , L, _{m, 2} , .. ., L _{m, j m,} ... L _{m, nm} ) in the amount of a respective assigned fixed or adjustable current source current (I _{k, j} , with 1≤k≤m and 1≤j≤n _m ) to drive and
Wherein the at least one control IC (IC _{k, Ik} ) comprises at least one of the current sources (Iq _{k, j} , with 1≤k≤m and 1≤j≤n _m );
- Detection _devices (M _{Lk1, jk1} , with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; M _{Lk2, jk2} , with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ; M _{Qk1, jk1)} with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; M _{Qk2, jk2} , with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ;) for detecting the at least two voltage _values (V _{Qk1, jk1} , with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; V _{Qk2, jk2} , with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ; V _{Lk1, jk1} , with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 , V _{Lk2, jk2} , with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ) of at least two voltage _drops across at least two LED groups (L _{k1, jk1} , with 1≤k ₁ ≤ m and 1 ≦ j _k1 ≦ n _k1 ; L _{k2, jk2} , where 1≤k ₂ ≦ m and 1 _≦ j _{k2 ≦} n _k2 ) and / or current sources (Iq _{k1, jk1} , where 1≤k ₁ ≦ m and 1 ≦ j _k1 ≦ n _k1 ; Iq _{k2, jk2} , where 1≤k ₂ ≦ m and 1 _≦ j _{k2 ≦} n _k2 ) of the plurality of Current sources (Iq _1,1 , Iq _1,2 , .... Iq _{1, j1} , .... Iq _{1, n1} ; Iq _2,1 , Iq _2,2 , .... Iq _{2, j2,.} Iq2 _{, n2} , Iqk _{, 1} , Iqk _{, 2} , .... Iqk _{, jk,} .... Iqk _{, nk} ; Iqm _{, 1} , Iqm _{, 2} , .... Iq _{m, jm} , .... Iq _{m, nm} ) for forming an at least two-dimensional voltage value vector (Vec) from the at least two voltage _values thus detected (V _{Qk1, jk1} , with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; V _{Qk2, jk2} , with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ; V _{Lk1, jk1} , with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; V _{Lk2, jk2} , with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ) at least one of the at least two LED groups (L _{k1, jk1} , with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; L _{k2, jk2} , with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ) and / or at least one of the at least two current sources (Iq _{k1, jk1} , with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; Iq _{k2, jk2} , with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ,
Wherein the at least one control IC (IC _{k, Ik} ) _comprises at least one of the detection _devices (M _{Lk1, jk1} , with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; M _{Lk2, jk2} , with 1≤k ₂ ≦ m and 1 _≦ j k2 _≦ n _k2 ; M _{Qk1, jk1} , where 1≤k ₁ ≦ m and ₁ ≦ j _k1 ≦ n _k1 ; M _{Qk2, jk2} , where 1≤k ₂ ≦ m and 1 _≦ j _{k2 ≦} n _k2 ;);
a voltage vector dimension reduction unit (VDVM),
• the at least two detected voltage _values (V _{Qk1, jk1} , with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; V _{Qk2, jk2} , with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ; V _{Lk1, jkl} , with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; V _{Lk2, jk2} , with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ) of the voltage vector (Vec) by _detecting one each Evaluation _value (B _{Qk1, jk1} , with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; B _{Qk2, jk2} , with 1≤k ₂ ≤m and _1≤j k2 _≤nk2 ; B _{Lk1, jk1} , with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; B _{Lk2, jk2} , with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ) of the respective voltage _value (V _{Qk1, jk1} , with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; V _{Qk2, jk2} , where 1≤k ₂ ≤m and _1≤j k2 _≤nk2 ; V _{Lk1, jk1} , where 1≤k ₁ ≤m and 1≤j _k1 ≤ n _k1 ; V _{Lk2, jk2} , with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ;), and
• rejects at least the voltage _{value of} the voltage vector (Vec) whose evaluation _{value is} (B _{Qk1, jk1} , where 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; B _{Qk2, jk2} , where 1≤k ₂ ≤m and 1≤ j _k2 ≤n _k2 , B _{Lk1, jk1} , where 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; B _{Lk2, jk2} , where 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ;) one Threshold (SW _v ) is exceeded or undershot, wherein a reduced voltage vector (VecR) is generated by the voltage vector diminution unit (VDVM) from the voltage vector (Vec), and
Wherein the threshold value (SW _v ) is also another voltage value (V _{Qk1, jk1} , with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; V _{Qk2, jk2} , with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ; V _{Lk1, jkl} , with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; V _{Lk2, jk2} , with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ) of the voltage vector ( Vec) or its evaluation _value (B _{Qk1, jk1} , with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; B _{Qk2, jk2} , with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ; B _{Lk1 , jk1} , with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; B _{Lk2, jk2} , with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ;);
a controllable voltage converter (DCDC), in particular a switched-mode power supply, for the regulated energy supply of the LED groups (L _{k, j} , where 1≤k≤m and 1≤j≤n _m ) and for the supply of the electrical currents (I _{k, j} , with 1≤k≤m and 1≤j≤n _m ) into the LED groups (L _{k, j} , with 1≤k≤m and 1≤j≤n _m );
a controller (CTR) adapted and arranged to regulate the output voltage (V _sup ) of the voltage converter (DCDC) by means of a control signal (R _v ) having a control characteristic based on the voltage values of the reduced voltage vector (VecR) located in a control board (SB) and which is the bus master;
at least one control IC controller (ICCTR _{k1, jk1} , ICCTR _{k2, jk2} ),
• the part of the control IC (IC _{k, Ik} ) is and
• the pulse width modulated signals (CPWM) for driving switches or current sources (Iq _{k, jk} , with 1≤k≤m and 1≤j _k ≤n _k ) for modulating the LED groups (L _{k, j} , with 1 ≤k≤m and 1≤j≤n _m ) and
• the controller (CTR) and / or the voltage _{vector dimension reduction unit} (VDVM) receive the at least one detected voltage _value (V _{Qk1, jk1} , where 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; V _{Qk2, jk2} , where 1≤ k ₂ ≤m and 1≤j _k2 ≤n _k2 ; V _{Lk1, jkl} , with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; V _{Lk2, jk2} , with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ) of the voltage vector (Vec) or the at least two detected voltage _values (V _{Qk1, jk1} , with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; V _{Qk2, jk2} , with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ; V _{Lk1, jk1} , where 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; V _{Lk2, jk2} , with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ) of the voltage vector (Vec), if the device comprises only one control IC (IC _{k, Ik} ) characterized by
- That the control IC (IC _{k, Ik} ) of the m LED assemblies (LB ₁ ... LB _m ) are each intended to participate in a car addressing method, and
- That the control IC (IC _{k, Ik} ) of the m LED modules (LB ₁ ... LB _m ) are each intended to log in to the controller (CTR) and to authenticate there and
a voltage value (V _{Qk, j} , where 1≤k≤m and 1≤j≤nm; V _{Lk, j} , where 1≤k≤m and 1≤j≤n _m ) of the voltage vector (Vec) in the case of a missing one Authentication of the control IC (IC _{k, Ik} ) by the voltage vector diminution unit (VDVM) is discarded to form the reduced voltage vector (VecR).

Description

preamble

The invention is directed to a fault-robust device for the energy-efficient supply of a plurality of n LED groups from one LED or a plurality of LEDs with electrical energy.

General introduction

LED lighting devices are known from the prior art, in which a combined power supply for the energy-efficient power supply of whole LED groups are used. In this case, preferably, a switching power supply operating voltage with high efficiency so that the totaled load cell voltages of the LEDs of the LED group are sufficiently exceeded with a margin of safety to ensure a current flow through the LEDs of the LED group. A current source sets the average current through the LEDs so that the brightness of the LEDs corresponds to a default value. Typically, a plurality of LEDs in a plurality of LED groups are supplied by a voltage converter. This can lead to failures and errors. Since the applications are security relevant applications, e.g. Stop lights of a car, can act, circuit failure should not lead to total failure of the application circuit. The proposed technical solution deals with a possible solution to this problem.

State of the art

The closest prior art devices for supplying a plurality of n LED groups (L _j , where 1≤j≤n) are provided by a controllable switching power supply (DCDC) having an output voltage (V _sup ) having an output voltage value (V _sup ). provided. As examples here can DE 10 318 780 A1 . US 2010/0 026 209 A1 . US Pat. No. 8,519,632 B2 . US 8 319 449 B2 . US Pat. No. 7,157,866 B2 . DE 10 2005 028 403 B4 . DE 10 2006 055 312 A1 . EP 1 499 165 B1 . WO 2013/030 047 A1 to be named. Such a device of the prior art typically has a plurality of n current sources (Iq ₁ , Iq ₂ , .. Iq _j , .... Iq _n ). Each of the current sources (Iq _j with 1≤j≤n) is associated with preferably precisely one LED group (L _j) and makes the LED groups current in normal operation (I _j, with 1≤j≤n) a.

An LED group (L _j ) here consists of one or more LEDs in parallel and / or series connection and the like combinations with a first and a second terminal. An LED group (L _j ) typically always has a first terminal connected to the output voltage (V _sup ) of the voltage converter (DCDC) and a second terminal connected to the first terminal of an associated current source (Iq _j ) of the n power sources is connected. The serial order of such serially connected elements within the series circuit may be changed within the meaning of this disclosure without affecting the content of this disclosure or the claimed scope of the claims.

Each of the current sources (Iq _j ) is set up and provided for, in proper operation, in each case an electric current (I _j ), by the respectively connected and thus associated with their LED group (L _j ) from the plurality of n LED groups (L ₁ , L ₂ , ..., L _j , ... L _n ) in the amount of a respective associated current source current (I _j ) to drive. This means that the respective current source (Iq _j ) in normal operation limits the current source current (I _j ) through this LED group (L _j ). For example, the respective current source (Iq _j ) may be a current mirror circuit or another current source circuit having a current source transistor. The actual power supply, however, via a voltage converter (DCDC), which supplies the series circuit of the respective current source (Iq _j ) and LED group (L _j ) with its output voltage (V _sup ). If the voltage converter (DCDC) fails or the voltage converter (DCDC) supplies too little output voltage (V _sup ) or output current, such a real transistor current source (Iq _j ) does not run into an infinite voltage like an ideal current source to supply the current source current (I _j ) but on the contrary shows an insufficient voltage drop (V _Qj ) across this current source (Iq _j ). From the prior art devices are therefore known which use the value of this voltage drop (V _Qj ) via the current source (Iq _j ) for the regulation of the output voltage (V _sup ) of the voltage converter (DCDC). For this purpose, they have detection _devices (M _Qj , with 1≤j≤n) for detecting voltage _values (V _Qj , where 1≤j≤n) of these voltage drops across the respective current sources (Iq _j ).

In the prior art, it is proposed to use the minimum detected voltage _value (V _Qj ) of the voltage drop across the corresponding current source (Iq _j ) having this minimum voltage drop (V _Qj ) of the voltage drop for controlling the voltage converter (DCDC). For this purpose, devices of the prior art _comprise a circuit (Min) for determining this minimum of the voltage _values (V _Qj ) of the voltage _drops across the current sources (Iq _j ) from the voltage _values (V _Qj ).

This has the advantage that the voltage drop across all power sources and thus the power consumption of the power sources through this Voltage drop can be minimized. The current sources are preferably linear regulators which have to reduce any excess supply voltage which may be present for a given current source value. The voltage across the LED group is typically specified by the LED chain length and the sum of the load voltages of the LEDs in series. However, this control method of the prior art based on the minimum power source voltage drop also has, on the other hand, various disadvantages which have an effect especially in safety-relevant applications and are not solved in the prior art:

In the case of a loss of mass of a current source (Iq _j ), no current flows through this current source (Iq _j ). Thus, the voltage drop across this current source (Iq _j ), since it is usually a real transistor current source is zero. But then the voltage converter (DCDC) is fully turned on by the controller (CTR), which can result in damage and subsequent failure of the remaining LED groups (L _j ). This can be a safety-related malfunction in safety-relevant modules. An LED short circuit would only have consequences insofar as the regulation would then be determined by another LED group. A short circuit of a current source (Iq _j ) would express itself as the loss of mass of a current source (Iq _j ) by the maximum Aufsteuern of the voltage converter (DCDC) and would thus also potentially safety relevant.

From the US 2010/0 201 278 A1 , of the US 2012/0 268 012 A1 , of the EP 2 600 695 B1 , of the US 2011/0 043 114 A1 , of the US 2008/0 122 383 A1 , of the US 2011/0 012 521 A1 and the US 2009/0 230 874 A1 are known devices for the controlled power supply of LED strands. The technical lessons of US 2010/0 201 278 A1 , of the US 2012/0 268 012 A1 , of the EP 2 600 695 B1 , of the US 2011/0 043 114 A1 , of the US 2008/0 122 383 A1 , of the US 2011/0 012 521 A1 and the US 2009/0 230 874 A1 do not allow detection of invalid - for example, obsolete - components or components in unauthorized locations in the utility network. Such obsolete components can occur in the course of mass production and may only be installed in certain version configurations with newer components. This has in particular the consequence that the not insignificant voltage drops across the supply lines may not be correctly taken into account in the regulation may not be correct.

From the US 2007/0139317 A1 a device for LED lighting is known whose control measurement values are transmitted by wire, wireless and / or via supply lines.

From the US 2015/0 355 850 A1 It is known that protecting sensor networks against manipulation makes sense.

The invention is therefore based on the object to provide a solution which does not have the above disadvantages of the prior art and has further advantages. This relates to the detection of a faulty state and the still error-free control of the supply voltage (V _sup ) remaining non-fault affected LED groups.

This object is achieved by a device according to claim 1.

Solution of the problem of the invention

The invention describes a device for supplying a plurality of n LED groups (L _1,1 , L, _1,2 , ..., L _{1, j 1,} ... L _{1, n 1,} L _2,1 , L, _2.2 ..., L _{2, j2} , ... L _{2, n2} ; _...... L _{k, 1} , L, _{k, 2} , ..., L _{k, jk} , ... L _{k, nk .....} , L _{m, 1} , L, _{m, 2} , ..., L _{m, j m} , ... L _{m, nm} ), which in m LED assemblies (LB ₁ , LB ₂ , ..... LB _k , ..... LB _m ) are organized but now controlled by a control module (SB) and supplied with voltage with an operating voltage _value (V _sup ). The entire device comprises a plurality of current sources (Iq _1,1 , Iq _1,2 , .... Iq _{1, j1} , .... Iq _{1, n1} ; Iq _2,1 , Iq _2,2 , ... . Iq _{2, j2,} .... Iq _{2, n2;} Iq _{k, 1,} I q _{k, 2,} .... Iq _{k, jk,} .... Iq _{k, nk;} Iq _{m, 1,} Iq _{m , 2} , .... Iq _{m, jm} , .... Iq _{m, nm} ). These are preferably housed in integrated control circuits control IC (IC _{k, Ik} , with 1≤k≤m and 1≤I _k ≤o _k ), which are divided into LED modules (LB _k ). Each LED module (LB _k , with 1≤k≤m) comprises an LED modules specific number of o _{k control} ICs (IC _{k, Ik} , with 1≤k≤m and 1≤I _k ≤o _k ) , This number o _k can be the same for all LED modules, but also different from LED module to LED module. Each control IC (IC _{k, Ik} , with 1≤k≤m and 1≤I _k ≤o _k ) thus comprises one or more of the current sources (Iq _{k, jk} , with 1≤k≤m and 1≤j _k ≤ n _k .Also the number of current sources per the control IC (IC _{k, Ik)} may be different from the control IC to control IC. Here, n _{k is} the number of the current sources (Iq _{k, jk} means with 1≤k≤m and 1≤j _k ≤n _k ) in the k-th LED package (LB _k ) Also, the number n _k of current sources per LED package may vary from LED package to LED package m means the number of LEDs Each of the current sources (Iq _{k, jk} with 1≤k≤m and 1≤j _k ≤n _k ) is thus preferably exactly one LED group (L _{k, jk} , with 1≤k≤m and 1≤ j _k ≤n _k ) and in normal operation sets their LED group current (I _{k, jk} , with 1≤k≤m and 1≤j _k ≤n _k ).

An LED group here consists of one or more LEDs in parallel and / or series connection. An LED group always points a first terminal connected to the operating voltage (V _sup ) or other supply potential. The operating voltage is equal to the output voltage of the control module (SB).

Each of the current sources (Iq _{k, j} , with 1≤k≤m and 1≤j≤n _m ) is arranged and provided for, in proper operation, each having an electric current (I _{k, j} , with 1≤k≤m and 1 ≤j≤n _m ), by the respective connected LED group (L _{k, j} , with 1≤k≤m and 1≤j≤n _m ) of the plurality of LED groups (L _1,1 , L _1,2 , ..., L _{1, j1} , ... L _{1, n 1,} L _2,1 , L, _2,2 , ..., L _2, j ₂ , ... L _{2, n 2} ; L _{k, 1} , L, _{k, 2} , ..., _{Lk, jk} , ... _{Lk, nk} ; ........ L _{m, 1} , L, _{m, 2} , ..., L _{m , jm} , ... ... L _{m, nm} ) in the amount of a respective associated current source current (I _{k, j} , with 1≤k≤m and 1≤j≤n _m ) to drive. This means that the respective current source (Iq _{k, j} , with 1≤k≤m and 1≤j≤n _m ) in proper operation, the current (I _{k, j} , with 1≤k≤m and 1≤j≤n _m ) is limited by this LED group (L _{k, j} , with 1≤k≤m and 1≤j≤n _m ). For example, it may again be a current mirror circuit or another current source circuit having a current source transistor. However, the actual power supply is again via a voltage converter (DCDC), the series circuit of respective current source (Iq _{k, j} , with 1≤k≤m and 1≤j≤n _m ) and LED group (L _{k, j} , with 1≤k≤m and 1≤j≤n _m) with an operating voltage, the output voltage (V _sup) of the voltage converter (DC-DC) supplied. If the voltage converter (DCDC) fails or the voltage converter (DCDC) does not supply enough output voltage (V _sup ) or output current, then such a real transistor power source does not run into an infinite voltage like an ideal current source to maintain the current source current but shows Conversely, an insufficient voltage drop across this current source (Iq _{k, j} , with 1≤k≤m and 1≤j≤n _m ).

1. a. einen Spannungswert (V_Qk1,jk1, mit 1≤k₁≤m und 1≤j_k1≤n_k1) des Spannungsabfalls über eine Stromquelle (Iq_k1,jk1, mit 1≤k₁≤m und 1≤j_k1≤n_k1) und einen Spannungswert (V_Lk2,jk2, mit 1≤k₂≤m und 1≤j_k2≤n_k2) eines Spannungsabfalls über eine LED-Gruppe (L_k2,jk2, mit 1≤k₂≤m und 1≤j_k2≤n_k2)
2. b. mindestens zwei Spannungswerte (V_Qk1,jk1, mit 1≤k₁≤m und 1≤j_k1≤n_k1; V_Qk2,_jk2, mit 1≤k₂≤m und 1≤j_k2≤n_k2) mindestens zweier Spannungsabfälle über mindestens zwei Stromquellen (Iq_k1,jk1, mit 1≤k₁≤m und 1≤j_k1≤n_k1; Iq_k2,jk2, mit 1≤k₂≤m und 1≤j_k2≤n_k2)
3. c. mindestens zwei Spannungswerte (V_Lk1,jk1, mit 1≤k₁≤m und 1≤j_k1≤n_k1; V_Lk2,jk2, mit 1≤k₂≤m und 1≤j_k2≤n_k2) mindestens zweier Spannungsabfälle über mindestens zwei LED-Gruppen (L_k1,jk1, mit 1≤k₁≤m und 1≤j_k1≤n_k1; L_k2,jk2, mit 1≤k₂≤m und 1≤j_k2≤n_k2

The proposed device now has in a first embodiment detection devices (M _{Lk1, jk1} , with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; M _{Lk2, jk2} , with 1≤k ₂ ≤m and 1≤j _k2 ≤ n _k2 ; M _{Qk1, jk1} , with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; M _{Qk2, jk2} , with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ;) for detecting at least two voltage _values (V _{Qk1, jk1} , with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; V _{Qk2, jk2} , with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ; V _{Lk1, jk1)} with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; V _{Lk2, jk2} , with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ) of at least two voltage _drops across at least two LED groups (L _{k1, jk1} , with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; L _{k2, jk2} , with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ) and / or current sources (Iq _{k1, jk1} , with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; Iq _{k2, jk2} , where 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ) of the plurality of current sources (Iq _1,1 , Iq _1,2 , Iq _{1, j1} , .... Iq _{1, n1} ; Iq _2,1 , Iq _2,2 , .... Iq _{2, j2} , .... Iq _{2, n2} ; Iq _{k, 1} , Iq _{k, 2} , .... Iqk _{, jk} , .... Iqk _{, nk} ; Iqm _{, i} , Iqm _{, 2,} .... Iqm _{, jm} , .... Iqm _{, nm} ). In doing so, it is sufficient to cover the following cases:

1. a. a voltage _value (V _{Qk1, jk1} , with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ) of the voltage drop across a current source (Iq _{k1, jk1} , with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ) and a voltage _value (V _{Lk2, jk2} , with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ) of a voltage drop across an LED group (L _{k2, jk2} , with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 )
2. b. at least two voltage _values (V _{Qk1, jk1} , with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; V _Qk2 , _jk2 , with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ) of at least two voltage _drops at least two current sources (Iq _{k1, jk1} , with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; Iq _{k2, jk2} , with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 )
3. c. at least two voltage _values (V _{Lk1, jk1} , with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; V _{Lk2, jk2} , with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ) of at least two voltage _drops at least two LED groups (L _{k1, jk1} , with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; L _{k2, jk2} , with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2

From these at least two voltage _values (V _{Qk1, Jk1} , V _{Qk2, Jk2} , V _{Lk1, Jk1} , V _{Lk2, Jk2} ), a controller (CTR) then forms an at least two-dimensional voltage _value vector (Vec), which is _calculated from the at least two voltage _values ( V _{Qk1, jk1} ; V _{Qk2, jk2} ; V _{Lk1, jk1} ; V _{Lk2, jk2} ). In the case a), the voltage _value vector (Vec) thus comprises at least one voltage _value (V _{Lk1, jk1} ) of one of the at least two LED groups (L _{k1, jk1} ) and a voltage _value (V _{Qk2, jk2} ) of at least one of the at least two current sources ( Iq _{k2, jk2} ).

1. a. Eine erste Variante des Vorschlags kann dann so aussehen, dass die Spannungsvektordimensionsverminderungseinheit (VDVM) den Spannungswert des (V_Qk,j; V_Lk,j) des Spannungsvektors (Vec) mit dem größten Spannungswert verwirft, um den reduzierten Spannungsvektor (VecR) zu bilden;
2. b. Eine zweite Variante des Vorschlagskann dann so aussehen, dass die Spannungsvektordimensionsverminderungseinheit (VDVM) den Spannungswert des (V_Qk,j; V_Lk,j) des Spannungsvektors (Vec) verwirft, dessen Betrag oberhalb eines Schwellwertes (SW_v) liegt, um den reduzierten Spannungsvektor (VecR) zu bilden;
3. c. Eine dritte Variante des Vorschlagskann dann so aussehen, dass die Spannungsvektordimensionsverminderungseinheit (VDVM) den Spannungswert des (V_Qk,j; V_Lk,j) des Spannungsvektors (Vec), dessen Betrag unterhalb eines Schwellwertes (SW_v) liegt, verwirft, um den reduzierten Spannungsvektor (VecR) zu bilden;
4. d. Eine vierte Variante des Vorschlagskann dann so aussehen, dass die Spannungsvektordimensionsverminderungseinheit (VDVM) den Spannungswert des (V_Qk,j; V_Lk,j) des Spannungsvektors (Vec) mit dem kleinsten Spannungswert verwirft, um den reduzierten Spannungsvektor (VecR) zu bilden;

_{According to the} proposal, the voltage _values (V _{Qk1, jk1} , V _{Qk2, jk2} , V _{Lk1, jk1} , V _{Lk2, jk2} ) of the voltage _value vector (Vec) are now evaluated. A voltage _{vector diminution unit} (VDVM) determines, for each of the at least two detected (V _{Qk1, jk1} ; V _{Qk2, jk2} ; V _{Lk1, jk1} ; V _{Lk2, jk2} ) of the voltage _value vector (Vec), an evaluation _value (B _{Qk1, jk1} , 1≤ k ₁ ≤m and 1≤j _k1 ≤n _k1 ; B _{Qk2, jk2} , where 1≤k ₂ ≤m and _1≤j k2 _≤nk2 ; B _{Lk1, Jk1} , where 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; B _{Lk2, jk2} , with 1≤k ₂ ≤m and 1≤j _{k2≤n k2 of} the respective voltage _value (V _{Qk1, jk1} ; V _{Qk2, jk2} ; V _{Lk1, jk1} ; V _{Lk2, jk2} ). This voltage _{vector dimension reduction unit} (VDVM) then rejects the voltage _{value of} the voltage vector (Vec) whose evaluation _value (B _{Qk1, jk1} ; B _{Qk2, jk2} ; B _{Lk1, jk1} ; B _{Lk2, jk2} ) exceeds or _{falls below} a threshold value (SW _v ) For example, if the overflow or underflow is used depends only on the implementation, for example, if only the power source voltages (V _{Qk, jk} ) are used, then it makes sense to use the smallest power source voltage In that case, for example, one could then provide the second smallest current source voltage with an offset (V _off ) as a safety margin and then use the value thus obtained for regulation. This then has the advantage that in one of the errors described above, this does not affect the Voltage regulation cuts through and leads to safety-relevant errors. In this error model, however, it is assumed that only single errors always occur. Thus, the voltage vector dimension reduction unit (VDVM) generates a reduced voltage vector (VecR) from the voltage vector (Vec) reduced by the number of one dimension. Of course it is possible to delete more N values in order to be able to intercept multiple errors. However, N must always be smaller than the number n by the number 1.

1. a. A first variant of the proposal may then be such that the voltage vector dimension reduction unit (VDVM) rejects the voltage value of the (V _{Qk, j} ; V _{Lk, j} ) of the voltage vector (Vec) having the largest voltage value to form the reduced voltage vector (VecR) ;
2. b. A second variant of the proposal may then be such that the voltage vector dimension reduction unit (VDVM) rejects the voltage value of the (V _{Qk, j} ; V _{Lk, j} ) of the voltage vector (Vec) whose magnitude is above a threshold value (SW _v ) by the reduced one Voltage vector (VecR) to form;
3. c. A third variant of the proposal may then be such that the voltage vector dimension reduction unit (VDVM) discards the voltage value of the (V _{Qk, j} ; V _{Lk, j} ) of the voltage vector (Vec) whose magnitude is below a threshold value (SW _v ) to form a reduced voltage vector (VecR);
4. d. A fourth variant of the proposal may then be such that the voltage vector dimension reduction unit (VDVM) rejects the voltage value of the (V _{Qk, j} ; V _{Lk, j} ) of the voltage vector (Vec) having the lowest voltage value to form the reduced voltage vector (VecR);

The proposed also present controllable voltage converter (DCDC), which is preferably a switching power supply with high efficiency, is the regulated power supply of the LED groups (L _{k, j} ) and for feeding the electrical currents (I _{k, j} ) in the LED groups ( _{Lk, j} ). The already mentioned controller (CTR) is, as proposed, suitable and intended to regulate the output voltage (V _sup ) of the voltage converter (DCDC) by means of a control signal (R _v ) representing the control value, based on the voltage values of the reduced voltage vector (VecR) , The controller (CTR) in conjunction with the voltage converter (DCDC) has a control characteristic. This manifests itself in how the control signal (R _v ) depends on the voltage values of the reduced voltage vector (VecR). Preferably, the control characteristic has a linear range in which the output voltage (V _sup ) of the variable voltage converter (DCDC) depends linearly on the weighted or unweighted average value (VecRM) of the voltage values of the reduced voltage vector (VecR).

The control characteristic has at least one operating point (AP), which is a combination of the voltage values of the reduced voltage vector (VecR), on, in which the output voltage (V _sup) of the controllable voltage converter (DCDC) non-linearly from the mean (VecRM) of the voltage values of the reduced Voltage vector (VecR) depends. At the same time, the controller (CTR) generates pulse width modulated signals (CPWM) for driving switches or current sources (Iq _{k, jk} ) for modulating the LED groups (L _{k, j} ). Particularly preferably, the current source transistors are switched on and off by these signals, whereby a pulse-width modulated current is generated.

According to the proposal, it is now advantageous if the device can be disassembled into suitable assemblies.

For this purpose, it comprises at least one control module (SB). This includes at least the said controller (CTR) with at least one data interface (DSC). Furthermore, it comprises at least the voltage converter (DCDC) having at least said output voltage (V _sup ) with an output voltage value for _supplying power to at least two LED groups (L _{k1, jk1} , L _{k2, jk2} ) of the plurality of LED groups (L _{k , j} ). As described above, the output voltage value of the output voltage (V _sup ) of this voltage converter (DCDC) is controlled by this controller (CTR) by means of the control signal (R _v ). becomes;

The proposed device comprises a plurality of LED assemblies (LB _k , with 1≤k≤m). Each of the LED assemblies (LB _k ) has at least one control IC (IC _{k, Ik} , with 1≤k≤m and 1≤I _k ≤o _k ). The control IC (IC _{k, Ik} ) are each assigned to a specific LED group (L _{k, j} , with 1≤k≤m and 1≤j≤n _m ). The control IC (IC _{k, Ik)} has each associated LED group (L _{k, j)} at least one of the respective LED group (L _{k, j)} associated with the current source (Iq _{k, j,} and with 1≤k≤m 1≤j≤n _m ). The control IC (IC _{k, Ik} ) has at least one data interface (DSS _{k, Ik} , with 1≤k≤m and 1≤I _k ≤o _k ). This data interface (DSS _{k, Ik} ) is connected via at least one data line (DL _{k, Ik} , with 1≤k≤m and 1≤I _k ≤o _k ) to at least the data interface (DSC) of the at least one controller (CTR) Control board (SB) connected.

The device preferably has at least one LED group (L _{k, j} ). The electric current through preferably each of these LED groups (L _{k, j} ) becomes in proper operation by the associated current source (Iq _{k, j} ) of the associated control IC (IC _{k, Ik} ) determined. In doing so, a current source voltage (V _{Qk, jk} ) drops across the respective current source (Iq _{k, j} ). An LED group voltage then drops across the respective LED group (L _{k, j} ).

The device preferably comprises, in each LED assembly (LB _k ), detection devices (M _{Lk, jk} , with 1≤k≤m and 1≤j _k ≤n _k ) for detecting LED group voltage values (V _{Lk, jk} , with 1≤k ≤m and 1≤j _{k≤n k} ) of the LED group _voltages .

Likewise, the proposed device in preferred each LED assembly (LB _k ) detecting devices (M _{Qk, jk} , with 1≤k≤m and 1≤j _k ≤n _k ) for detecting current source voltage values (V _{Qk, jk} , with 1≤k ≤ m and 1 <j _k <n _k) of the power source voltages.

Furthermore, the LED module has means (DSC) for transmitting the detected group LED voltage _values (V _{Lk, jk} ) and / or current source _{voltage values} (V _{Qk, jk} ) to the control module (SB) via the data interface (DSS _{k, Ik} ) of the respectively associated control ICs (IC _{k, Ik} ). The supply terminal for supplying the LED module (LB _{k, j} ) with electrical energy is directly or indirectly connected to the voltage converter (DCDC) and is supplied by the latter with the output voltage (V _sup ) of the voltage converter (DCDC).

The controller (CTR) of the control module (SB) receives by means of wired or wireless data transmission at least one LED group voltage value (V _{Lk, jk} , with 1≤k≤m and 1 <j _k <n _k ) of at least one of the LED assemblies ( LB _k ). It is also sufficient if the controller (CTR) of the control module (SB) receives at least one power source _{voltage value} (V _{Qk, jk} ) from at least one of the LED modules (LB _k ).

This transmission can be wired and wireless. In addition to the data transmission via star-shaped or serially chain-shaped buses, the transmission via the supply voltage line comes into question in order to save wiring costs. It is important that the complex internal resistance of the voltage converter (DCDC) and the current sources (Iq _{k, jk} ) in the frequency range of the data signal are sufficiently high, so that the data signal is not short-circuited or over-attenuated.

Especially in the case of a wireless transmission of the detected voltage values (V _{Lk, jk,} with 1≤k≤m and 1≤j _k ≤ n _k; V _{Q k, jk,} with 1≤k≤m and 1≤j _k ≤ n _k ) it is important that the controller system can not be disturbed from the outside. It is therefore important that the LED modules (LB _k ) or the control ICs (IC _{k, Ik} ) located on them, log on to the controller (CTR) and authenticate there. Voltage values (V _{Lk, jk,} with 1≤k≤m and 1≤j _k ≤ n _k; V _{Q k, jk,} with 1≤k≤m and 1 <j _k <n _k) of unauthenticated LED assemblies (LB _k ) or control ICs (IC _{k, Ik} ) are not used for the regulation of the supply voltage (V _sup ) and discarded. Preferably, the authentication is repeated at regular intervals.

Interference due to EMC can be intercepted by a redundant transmission of the voltage values from the LED modules (LB _k ) to the control module (SB).

1. a. von mindestens einem LED-Gruppenspannungswert (V_Lk,jk) und zwar vorzugsweise dem zweit größten LED-Gruppenspannungswert (V_Lk,jk) oder
2. b. von mindestens einem LED-Gruppenspannungswert (V_Lk,jk) und mindestens einem Stromquellenspannungswert (V_Qk,jk) und zwar vorzugsweise dem zweit größten LED-Gruppenspannungswert (V_Lk,jk) und ebenso vorzugsweise dem zweit kleinsten Stromquellenspannungswert (V_Qk,jk) oder
3. c. von mindestens zwei Stromquellenspannungswerten (V_Qk1,jk1, V_Qk2,jk2) und zwar vorzugsweise dem zweit kleinsten Stromquellenspannungswert (V_Qk,jk) ein.

The controller (CTR) then sets the output voltage value of the output voltage (V _sup ) of the voltage converter (DCDC) in dependence

1. a. of at least one LED group _{voltage value} (V _{Lk, jk} ), preferably the second largest LED group _{voltage value} (V _{Lk, jk} ) or
2. b. at least one LED group _{voltage value} (V _{Lk, jk} ) and at least one power source _{voltage value} (V _{Qk, jk} ), preferably the second largest group LED _{voltage value} (V _{Lk, jk} ) and also preferably the second lowest power source _{voltage value} (V _{Qk, jk} ) or
3. c. of at least two power source _{voltage values} (V _{Qk1, jk1} , V _{Qk2, jk2} ), preferably the second lowest power source _{voltage value} (V _{Qk, jk} ).

In an important variant of the proposal, the controller (CTR) of the control module (SB) _receives a number of at least three power source _{voltage values} (V _{Qk1, j1} ; V _{Qk2, j2} ; V _{Qk3, j3} ) of at least two LED modules (LB _k1 , with 1 ≤k ₁ ≤m; L _k2 , where 1≤k ₂ ≤m). In this case, the controller (CTR) of the control board (SB) preferably discards at least one of the at least three power source _{voltage values} (V _{Qk1, j11} ; V _{Qk2, j2} ; V _{Qk3, j3} ). The controller (CTR) then uses, as previously described, the at least one reduced number of at least two remaining power source _{voltage values} (eg, V _{Qk1, j1} ; V _{Qk2, j2} ) of the original at least three power source _{voltage values} (V _{Qk1, j1} ; V _{Qk2, j2} ; V _{Qk3, j3} ) as previously described.

The controller (CTR) then adjusts the output voltage value of the output voltage (V _sup ) of the voltage converter (DCDC) as a function of the remaining at least two residual power source _{voltage values} (V _{Qk1, j1} , V _{Qk2, j2} ) which have been reduced by at least one.

list of figures

• 1 shows a device according to the prior art.
• 2 shows an LED assembly with detection devices for the voltage drop across the power sources.
• 3 shows an LED assembly with detection devices for the voltage drop across the LED groups.
• 4 shows an LED assembly with detection devices for the voltage drop across the LED groups and the power sources for a star-connected data bus.
• 5 shows an exemplary interconnection of two LED modules with four LED groups and two control IC per LED group with a control module via a star-shaped data bus
• 6 shows an LED assembly with voltage drop detection devices across the LED groups and current sources for a data bus interconnected in a linear sequence.
• 7 Shows an exemplary interconnection of two LED modules with four LED groups each and two control ICs per LED group with a control module via a data bus interconnected in a linear sequence.
• 8th equals to 6 with the difference that the transmission of the detected voltage _values (V _{Qk, jk} , V _{Lk, jk} ) takes place by means of a data transmission via the supply voltage line.
• 9 equals to 7 with the difference that the transmission of the detected voltage _values (V _{Qk, jk} , V _{Lk, jk} ) takes place by means of a data transmission via the supply voltage line.
• 10 corresponds to the 6 and 8th with the difference that the transmission of the detected voltage _values (V _{Qk, jk} , V _{Lk, jk} ) takes place by means of a wireless data transmission.
• 11 corresponds to the 7 and 9 with the difference that the transmission of the detected voltage _values (V _{Qk, jk} , V _{Lk, jk} ) takes place by means of a wireless data transmission.

Description of the figures

FIG. 1

1 shows schematically and simplified a device according to the cited prior art. A voltage transformer ( DCDC ) converts the non-drawn operating voltage of the vehicle, which is a DC voltage, into an output voltage ( V _sup ) with an output voltage value that is typically different from the voltage value of the operating voltage, typically at smaller voltage amounts. The controllable voltage converter ( DCDC ) From the operating voltage network of the car extracted energy as electric power. This output current of the voltage converter ( DCDC ) flows through the n LED groups ( L ₁ . L ₂ , ... L _j , ... L _n ). He splits himself to the partial currents through these LED groups ( L ₁ . L ₂ , ... L _j , ... L _n ). The current through the respective LED group ( L _j , with 1≤j≤n) is thereby replaced by one, the respective LED group ( L _j ) associated current source (Iq _i , Iq ₂ , ... iq _j , .... Iq _n ). The setting is either fixed or programmable or adjustable. It falls on the associated power source ( Iq _j , with 1≤j≤n), a power source voltage decreases. This voltage value is determined as the detected voltage value ( V _Qj , with 1≤j≤n) through one of these current sources ( Iq _j ) associated detection device ( M _Qj , measured with 1≤j≤n) and forwarded for control. A circuit ( min ) for detecting this minimum of the voltage values ( V _Qj ) of the voltage drops across the power sources ( Iq _j ) then determines the minimum value of these voltage values ( V _Qj ) of the voltage drops across the power sources ( Iq _j ) and passes this value to the controller ( CTR ) further.

This then calculates the control signal (R _v ) on the basis of this selected value. The voltage converter ( DCDC ) generates the output voltage ( V _sup ) in response to this control signal (R _v ), whereby the control loop is closed. Regulated by the minimum voltage drop across the power sources ( Iq _j ) ensures that all power sources are within the permissible operating range and thus all LED groups ( LB ₁ . LB ₂ , .... LB _j , .... LB _n ) are supplied with the predetermined electrical current and at the same time the output voltage ( V _sup ) of the voltage converter ( DCDC ) is set so that no unnecessary further voltage drop across the power sources ( Iq ₁ . Iq ₂ , .... Iq _j , .... Iq _n ) Occurs.

FIG. 2

2 shows schematically and simplified a k-th LED assembly ( LB _k ) with 1≤k≤m, where m is the number of LED assemblies in the lighting system under consideration. The module is connected via the supply voltage line with the output voltage ( V _sup ) of the voltage converter can be connected, supplied with electrical energy. The supply voltage is at all n _k LED groups ( _{Lk, jk} ) (with 1≤j _k ≤n _k ). This will cause the LED groups ( _{Lk, jk} ) of the k th LED Assembly (L _k ) by a specific electric current ( I _{k, jk} ) (with 1≤j _k ≤n _k ) flows through in proper operation. This one is through the n _k Current sources (iq _{k, jk} ) (with 1≤j _k ≤n _k ), each of a respective LED group ( _{Lk, jk} ) of the k th LED assembly ( LB _k ), according to a default value, for example, by a control IC controller (ICCTR _{k, 1k} ) set. The corresponding lines to this setting are not shown for clarity in this and the following figures. In the example of 2 all LED groups ( _{Lk, jk} ) by a single control IC (IC _{k, 1k} ) of the k th LED assembly ( LB _k ). This control IC ( IC _{k, Ik} ) includes the adjustable current sources ( Iq _{k, jk} ) and the power sources ( Iq _{k, jk} ) associated detection _devices (M _{Qk, jk} ) for detecting the voltage value (V _{Qk, jk} ) of the respective voltage drop across the respective power source ( Iq _{k, jk} ). The power sources ( Iq _{k, jk} ) could also be split among several control ICs. Each control IC would then preferably have its own control IC controller (ICCTR _{k, 1k} ). In general, therefore, an LED assembly ( LB _k ) o _{k control} ICs ( IC _{k, Ik} ) (with 1≤1 _k ≤o _k ) then include the n _k Power sources for setting the n _k Streams ( I _{k, jk} ) for the n _k LED groups ( _{Lk, jk} ) of the k th LED assembly (L _k ). In the example of 2 For example, an exemplary analog-to-digital converter (ADC _{k, 1k} ) is provided within the single control IC (ICk _{, 1k} ) of this example. This converts the voltage _values (V _{Qk, jk} ) of the respective voltage drop across the respective current source ( Iq _{k, jk} ) into values that the control IC controller (ICCTR _{k, 1k} ) sends to the controller ( CTR ) of the control module not shown in this figure ( SB ) sends. This is done by a data interface (DSS _{k, 1k} ) of the exemplary first control IC (IC _{k, 1k} ). In the example of this figure, a star-shaped interconnection of the data interfaces (DSS _{k, 1k} ) with the data interface ( DSC ) of the controller ( CTR ) of the control module ( SB ) via the data bus ( DB ) intended.

FIG. 3

3 largely corresponds to the 2 with the difference that now the voltage drops across the LED groups ( _{Lk, jk} ) by detection devices (M _{Lk, jk} ) for detecting the voltage value (V _{Lk, jk} ) of the respective voltage drop across the respective LED groups ( _{Lk, jk} ) in the k-th LED board (L _k ) are detected.

FIG. 4

4 corresponds to the combination of 2 and 3 , There will now be voltage drops across the LED groups ( _{Lk, jk} ) by detection devices (M _{Lk, jk} ) for detecting the voltage value (V _{Lk, jk} ) of the respective voltage drop across the respective LED groups ( _{Lk, jk} ) in the exemplary single control IC (IC _{k, 1k} ) of the k th LED assembly (L _k ) and voltage drops across the power sources ( Iq _{k, jk} by detection _devices (M _{Qk, jk} ) for detecting the voltage _value (V _{Qk, jk} ) of the respective voltage drop across the respective current sources ( Iq _{k, jk} ) detected. The detection devices (M _{Lk, jk} ) for detecting the voltage value (V _{Lk, jk} ) of the respective voltage drop across the respective LED groups ( _{Lk, jk} ) are in the exemplary single control IC (IC _{k, 1k} ) of the k-th LED assembly (L _k ) for the supply of the LED groups ( _{Lk, jk} ) of the k-th LED assembly (L _k ) is provided.

FIG. 5

5 shows an exemplary overall structure of such a lighting device. For simplicity, only two LED modules ( LB ₁ . LB ₂ ) (in this case, for example, m = 2). However, the proposal deals with any number of m of LED assemblies ( LB _k ). Each of the two exemplary LED assemblies ( LB ₁ . LB ₂ ) has two control ICs each ( IC _1.1 . IC _1,2 . IC _2.1 . IC _2.2 ) on. In this example, the data bus ( DB ) arranged in a star shape. The control ICs ( IC _1.1 . IC _1,2 . IC _2.1 IC _2.2 ) typically act as slaves of the controller ( CTR ) located in the control module ( SB ) and is typically the bus master. The proposal also includes solutions with any number _ok of control ICs ( IC _{k, Ik} ) (with 1≤k≤n and 1≤I≤o _k ), where the number o _{k of} the control ICs ( IC _{k, Ik} ) per LED assembly ( LB _k ) may vary from LED assembly to LED assembly. In the example of 5 are each control IC ( IC _1.1 . IC _1,2 . IC _2.1 . IC _2.2 ) the electric currents ( I _1,1 . I _1,2 , I _1.3 , I _1.4 , I _2.1 . I _2,2 , I _2,3 , I _2,4 ) for every two LED groups ( L _1,1 . L ₁ , ₂ , L _1.3 . L _1,4 . L _2.1 , L _2,2 , L _2,3 . L _2,4 ) that this control IC ( IC _1.1 . IC _1,2 . IC _2.1 . IC _2.2 ) are assigned by this control IC ( IC _1.1 . IC _1,2 . IC _2.1 . IC _2.2 ).

The LED groups ( L _1,1 . L ₁ , ₂ , L _1.3 . L _1,4 ) of the first LED assembly ( LB ₁ ) are preferably within the LED assembly with a first connection with each other and from there preferably with the output voltage ( V _sup ) of the voltage converter ( DCDC ) in the control module ( SB ) connected. With the second connection, they are connected to the respective power source within the associated control IC ( IC _1.1 . IC _1,2 ) of the first LED assembly ( LB ₁ ) connected.

The LED groups ( L _2.1 . L _2.2 . L _2,3 . L _2,4 ) of the second LED assembly ( LB ₂ ) are preferably within the LED assembly with a first connection with each other and from there with the output voltage ( V _sup ) of the voltage converter ( DCDC ) in the control module ( SB ) connected. With the second connection they are with the respective power source within the associated control IC ( IC _2.1 . IC _2.2 ) of the second LED assembly ( LB ₂ ) connected.

Within the control assembly ( SB ) receives the data interface ( DSC ) of the controller ( CTR ) the data from the data bus ( DB ) and transmits them to the controller ( CTR ). This calculates from the control ICs ( IC _1.1 . IC _1,2 . IC _2.1 . IC _2.2 ) received voltage _values (V _L1,1 , V _L1,2 , V _L1,3 , V _L1,4 , V _L2,1 , V _L2,2 , V _L2,3 , V _L2,4 ,) of the respective voltage _drops across the respective LED groups ( L _1,1 . L _1,2 . L _1.3 , L _1,4 , L _2.1 . L _2,2 . L _2,3 . L _2,4 ) and / or from the control ICs ( IC _1.1 . IC _1,2 . IC _2.1 . IC _2.2 ) received voltage _values (V _Q1,1 , V _Q1,2 , V _Q1,3 , V _Q1,4 , V _Q2,1 , V _Q2,2 , V _Q2,3 , V _Q2,4 ) of the respective voltage _drops across the respective Power source ( Iq _1.1 . Iq _1,2 , Iq _1.3 , Iq _1.4 , Iq _2.1 . Iq _2,2 , Iq _2,3 , Iq _2,4 ) within the control ICs ( IC _1.1 . IC _1,2 . IC _2.1 . IC _2.2 ) the control value of the control signal (R _v ). With this control signal (R _v ) the controller ( CTR ) the output voltage ( V _sup ) of the voltage converter ( DCDC ) such that all the voltage _drops (V _Q1,1 , V _Q1,2 , V _Q1,3 , V _Q1,4 , V _Q2,1 , V _Q2,2 , V _Q2,3 , V _Q2,4 ,) over all Power sources ( Iq _1.1 . Iq _1,2 , Iq _1.3 , Iq _1.4 , Iq _2.1 . Iq _2,2 , Iq _2,3 , Iq _2,4 ) within the control ICs ( IC _1.1 . IC _1,2 . IC _2.1 . IC _2.2 ) have a sufficient height above a respective minimum voltage drop for proper operation and at the same time the output voltage ( V _sup ) of the voltage converter ( DCDC ) is minimized so that no unnecessary energy in the control ICs ( IC _1.1 . IC _1,2 . IC _2.1 . IC _2.2 ) due to excessive voltage _drops (V _Q1,1 , V _Q1,2 , V _Q1,3 , V _Q1,4 , V _Q2,1 , V _Q2,2 , V _Q2,3 , V _Q2,4 ,) via the current sources ( Iq _1.1 . Iq _1,2 , Iq _1.3 , Iq _1.4 , Iq _2.1 . Iq _2,2 , Iq _2,3 , Iq _2,4 ) is lost and this heats up. Here the controller regulates ( CTR ) but not after the minimum of these voltage _{values of} the voltage _drops (V _Q1,1 , V _Q1,2 , V _Q1,3 , V _Q1,4 , V _Q2,1 , V _Q2,2 , V _Q2,3 , V _{Q2, 4} ,) on the power sources ( Iq _1.1 . Iq _1,2 , Iq _1.3 , Iq _1.4 , Iq _2.1 . Iq _2,2 , Iq _2,3 , Iq _2,4 ), but preferably rejects the lowest value and determines from the remaining voltage values the control value of the control signal (R _v ). For example, one method could be the second lowest value of the voltage _drops (V _Q1,1 , V _Q1,2 , V _Q1,3 , V _Q1,4 , V _Q2,1 , V _Q2,2 , V _Q2,3 , V _Q2 , ₄ ,) via the power sources ( Iq _1.1 . Iq _1,2 , Iq _1.3 , Iq _1.4 , Iq _2.1 . Iq _2,2 , Iq _2,3 , Iq _2,4 ), this value by a predetermined offset ( V _off ) and to use the corrected voltage value thus obtained as the basis for the calculation of the control value. Such a construction is thus fault-tolerant to single errors. If multiple _errors are to be compensated up to a number N, then the N lowest voltage _{values of} the voltage _drops (V _Q1,1 , V _Q1,2 , V _Q1,3 , V _Q1,4 , V _Q2,1 , V _Q2,2 , V _Q2,3 , V _Q2,4 ,) via the current sources ( Iq _1.1 . Iq _1,2 , Iq _1.3 , Iq _1.4 , Iq _2.1 . Iq _2,2 , Iq _2,3 , Iq _2,4 ) are discarded. Obviously, N always has to be at least smaller by the number 1 than the number n (here by way of example n = 8) of the LED groups ( L _1,1 . L _1,2 . L _1.3 . L _1,4 . L _2.1 . L _2,2 . L _2,3 . L _2,4 ). Instead of the control of the second smallest voltage _{value of} the voltage _drops (V _Q1,1 , V _Q1,2 , V _Q1,3 , V _Q1,4 , V _Q2,1 , V _Q2,2 , V _Q2,3 , V _Q2,4 ,) on the power sources ( Iq _1.1 . Iq _1,2 , Iq _1.3 , Iq _1.4 , Iq _2.1 . Iq _2,2 , Iq _2,3 , Iq _2,4 ) may also be based on a weighted or _unweighted average of the voltage _{values of} the voltage _drops (V _Q1,1 , V _Q1,2 , V _Q1,3 , V _Q1,4 , V _{Q2 , 1} , V _Q2,2 , V _Q2,3 , V _Q2,4 ,), but then preferably the smallest voltage _{value of} these voltage _values (V _Q1,1 , V _Q1,2 , V _Q1,3 , V _Q1,4 , V _Q2,1 , V _Q2,2 , V _Q2,3 , V _Q2,4 ,) should not be considered for error avoidance and again the mentioned predetermined offset ( _FIG . V _off ) is subtracted from the mean value determined in this way before it is used to determine the control value of the control signal (R _v ). The offset ( V _off ) is preferably adjustable or programmable.

In addition to regulation based on the voltage _{values of} the voltage _drops (V _Q1,1 , V _Q1,2 , V _Q1,3 , V _Q1,4 , V _Q2,1 , V _Q2,2 , V _Q2,3 , V _Q2,4 ) via the power sources ( Iq _1.1 . Iq _1,2 , Iq _1.3 , Iq _1.4 , Iq _2.1 . Iq _2,2 , Iq _2,3 , Iq _2,4 ) is also a control based on the voltage _values (V _L1,1 , V _L1,2 , V _L1,3 , V _L1,4 , V _L2,1 , V _L2,2 , V _L2,3 , V _L2,4 ) of the respective voltage _drops across the respective LED groups ( L _1,1 . L _1,2 . L _1.3 . L _1,4 . L _2.1 . L _2,2 . L _2,3 . L _2,4 ) possible. Here it makes sense to set the greatest voltage _{value of} the voltage _values (V _L1,1 , V _L1,2 , V _L1,3 , V _L1,4 , V _L2,1 , V _L2,2 , V _L2,3 , V _{L2, 4} ) of the respective voltage drops across the respective LED groups ( L _1,1 . L ₁ , ₂ , L _1.3 . L _1,4 . L _2.1 . L _2,2 , L _2,3 , L _2,4 ) before determining the control value of the control signal (R _v ). This is done in the example of 5 through the controller ( CTR ). A voltage vector dimensional reduction unit ( VDVM ), the object of which is to reduce the dimension of the voltage vector of the voltage _drops (V _L1,1 , V _L1,2 , V _L1,3 , V _L1,4 , V _L2,1 , V _L2,2 , V _L2,3 , V _L2,4 ) (Here is the dimension 8), is in the example of 5 not shown because the controller ( CTR ) perceives this function. In this respect, here is the controller ( CTR ) simultaneously the voltage vector dimension reduction unit ( VDVM ). The control value of the control signal can again be determined, for example, on the basis of the weighted or unweighted average of the remaining values of the voltage _drops (V _L1,1 , V _L1,2 , V _L1,3 , V _L1,4 , V _L2,1 , V _L2,2 , V _L2.3 , V _L2.4 ) after _canceling the largest voltage drop _value . Alternatively, for example, the control would be based on the second largest voltage _{value of} the voltage _drops (V _L1,1 , V _L1,2 , V _L1,3 , V _L1,4 , V _L2,1 , V _L2,2 , V _L2,3 , V _L2,4 ) conceivable.

Finally, a mixed control is also based on several voltage _{values of} the voltage _drops (V _Q1,1 , V _Q1,2 , V _Q1,3 , V _Q1,4 , V _Q2,1 , V _Q2,2 , V _Q2,3 , V _{Q2 , 4} ) via the power sources ( Iq _1.1 . Iq _1,2 , Iq _1.3 , Iq _1.4 , Iq _2.1 . Iq _2,2 , Iq _2,3 , Iq _2,4 ) and simultaneously several voltage _{values of} the voltage _drops (V _L1,1 , V _L1,2 , V _L1,3 , V _L1,4 , V _L2,1 , V _L2,2 , V _{L2 , 3} , V _L2,4 ) via the LED groups ( L _1,1 . L _1,2 . L _1.3 . L _1,4 . L _2.1 . L _2,2 . L _2,3 . L _2,4 ) possible. Preferably, the voltage vector dimension reduction unit ( VDVM ) the intial voltage value vector ((V _Q1,1 , V _Q1,2 , V _Q1,3 , V _Q1,4 , V _Q2,1 , V _Q2,2 , V _Q2,3 , V _Q2,4 , V _L1,1 , V _L1,2 , V _L1,3 , V _L1,4 , V _L2,1 , V _L2,2 , V _L2,3 , V _L2,4 ) = Vec), which here has a dimension of 16, by two Dimensions by deleting the smallest voltage _{value of} the voltage _drops (V _Q1,1 , V _Q1,2 , V _Q1,3 , V _Q1,4 , V _Q2,1 , V _Q2,2 , V _Q2,3 , V _Q2,4 ) via the power sources ( Iq _1.1 . Iq _1,2 , Iq _1.3 , Iq _1.4 , Iq _2.1 . Iq _2,2 , Iq 2, ₃ , Iq _{2, 4} ) and at the same time deleting the largest voltage _{value of} the voltage _drops (V _L1,1 , V _L1,2 , V _L1,3 , V _L1,4 , V _L2,1 , V _L2,2 , V _L2,3 , V _L2,4 ) via the LED groups ( L _1,1 . L _1,2 . L _1.3 . L _1,4 . L _2.1 . L _2,2 . L _2,3 . L _2,4 ). For the sake of clarity, we assume that this is the values V _L1,1 and V _Q1,1 because, for example, the current source ( Iq _1.1 ) is short-circuited and therefore no voltage (V _Q1,1) via the power source ( Iq _1.1 ) drops or this voltage (V _{Q1,1) is} too small or the voltage drop (V _L1,1 ) via the LED group ( L _1,1 ) is too big. In that case the controller (here CTR ) in its role as stress vector dimension reduction unit ( VDVM ) cancel these two values (V _L1,1 , V _Q1,1 ) to obtain the reduced voltage _value vector ((V _Q1,2 , V _Q1,3 , V _Q1,4 , V _Q2,1 , V _Q2,2 , V _{Q2 , 3} , V _Q2,4 , V _L1,2 , V _L1,3 , V _L1,4 , V _L2,1 , V _L2,2 , V _L2,3 , V _L2,4 ) = VecR) here has a dimension of 14. Here then the controller ( CTR ) based on this reduced voltage _{value vector} (V _Q1,2 , V _Q1,3 , V _Q1,4 , V _Q2,1 , V _Q2,2 , V _Q2,3 , V _Q2,4 , V _L1,2 , V _{L1 , 3} , V _L1,4 , V _L2,1 , V _L2,2 , V _L2,3 , V _L2,4 ) = VecR), eg by weighted averaging to generate the control value of the control signal (R _v ). It is also conceivable to calculate the voltage values of this reduced voltage value vector ( VecR ) by an affine mapping into a modified voltage value vector ( VECM ) and then only weighted or unweighted the averaging to then generate the control value of the control signal (R _v ).

FIG. 6

6 equals to 4 with the difference that the connection to the subsequent LED assembly (LB ( _{k + 1} )), which is no longer drawn, is now connected via an additional second data interface (DSS _{Bk, 1} ) and a second data bus (FIG. DB ₂ ) and the connection to the preceding, not shown LED assembly (LB ( _k-1 )) or not shown control assembly ( SB ) via a first data interface ( DSS _{Ak, 1} ) and a first data bus ( DB ₁ ) will be produced. A direct communication between the subsequent LED groups on the one hand and the control module or preceding LED modules on the other side is then not possible.

FIG. 7

7 equals to 5 with the difference that now control ICs with data interfaces accordingly 6 be used. Inside the LED assemblies ( LB ₁ . LB ₂ ) the data connection between the control ICs ( IC _1.1 ; IC _1.2 ) of the first LED assembly ( LB ₁ ) and between the control ICs ( IC _1.1 ; IC _1,2 ) of the second LED assembly ( LB ₂ ) by internal data buses (DB _i1 , DB _i2 ). The first data bus ( DB ₁ ) connects the first control IC ( IC _1.1 ) of the first LED assembly ( LB ₁ ) with the data interface ( DSC ) of the control board. The second data bus ( DB ₂ ) connects the second control IC ( IC _1,2 ) of the first LED assembly with the first control IC ( IC _2.1 ) of the second LED assembly ( L ₂ ). On the one hand, this construction enables the application of auto-addressing methods, such as from the EP 1490 772 B1 known. Also, such a lighting device can be located on a flexible circuit carrier and configured configurable. In this connection, please refer to the pending German patent applications DE 10 2017 106 811 A1 . DE 10 2017 106 812 A1 and DE 10 2017 106 813 A1 referring to a configurable LED chain.

FIG. 8

equals to 6 with the difference that the transmission of the detected voltage _values (V _{Qk, jk} , V _{Lk, jk} ) by means of a data transmission via the supply voltage line ( V _sup ) he follows. For this purpose, the simplest illustrated k th LED assembly ( LB _k ) a data interface ( DSSPL _{k, 1} ), the data of the determined voltage values (V _{Qk, jk} V _{Lk, jk} ) via the supply voltage line ( V _sup ) to the control board ( SB ) can transmit. In this example, the determined voltage values (V _{Qk, jk} ) for controlling the supply voltage ( V _sup ) via the supply voltage line ( V _sup ) of the LED assemblies ( LB _k ) to the control board ( SB ), where the adjustment of the supply voltage ( V _sup ) depending on these data. Furthermore, an encryption of the transmission is particularly useful here to make it difficult for an attacker to manipulate the transmitted data. To do this, the control IC controller encrypts ( ICCTR _{k, Ik} ) the detected voltage values (V _{Lk, jk} , V _{Qk, jk} ) and sends them to the controller ( CTR ) of the control module ( SB ). The controller of the control module ( SB ) decrypts these data in order to determine the) the determined voltage values (V _{Lk, jk} , V _{Qk, jk} ) and thus the voltage vector ( Vec ) to extract or complete. On the basis of the controller ( CTR ) then the regulation of the output voltage ( V _sup ) of the voltage converter ( DCDC ) by.

Is the data connection for whatever reason between controller ( CTR ) and all control IC controllers ( ICCTR _{k, Ik} ) too disturbed or even interrupted, so regulates the controller the output voltage ( V _sup ) of the voltage converter ( DCDC ) preferably to a Notlaufwert.

FIG. 9

equals to 7 with the difference that the transmission of the detected voltage _values (V _{Qk, jk} , V _{Lk, jk} ) by means of a data transmission via the supply voltage line ( V _sup ) he follows. The control assembly ( SB ) has a data interface ( DSCPL ) of the controller ( CTR ) for data transmission via the supply voltage line ( V _sup ) on. In this example, the determined voltage values (V _{Qk, jk} ) for controlling the supply voltage ( V _sup ) via the supply voltage line ( V _sup ) of the LED assemblies ( LB _k ) to the control board ( SB ), where the adjustment of the supply voltage ( V _sup ) depending on these data.

FIG. 10

corresponds to the 6 and 8th with the difference that the transmission of the detected voltage _values (V _{Qk, jk} , V _{Lk, jk} ) takes place by means of a wireless data transmission. For this purpose, the simplest illustrated k th LED assembly ( LB _k ) a wireless data interface ( DSSWL _{k, 1} ), which transmits the data of the determined voltage values (V _{Qk, jk} , V _{Lk, jk} ) wirelessly to the control module ( SB ) can transmit. In this case, a wireless transmission but also an acoustic, optical or other type of wireless transmission may refer to wirelessly. In this example, the determined voltage values (V _{Lk, jk} , V _{Qk, jk} ) for controlling the supply voltage ( V _sup ) wirelessly from the LED assemblies ( LB _k ) to the control board ( SB ), where the adjustment of the supply voltage ( V _sup ) depending on these data. In this type of transmission is an authentication of the LED modules ( LB _k ) and / or the control ICs (IC _{k, jk} ) are particularly preferred. The detected voltage values (V _{Lk, jk} , V _{Qk, jk} ) of unauthenticated LED assemblies ( LB _k ) and / or the control ICs (ICk _{, jk} ) are preferably discarded. Since EMC interference can also occur, a redundant transmission is indicated. Furthermore, an encryption of the transmission is particularly useful here to make it difficult for an attacker to manipulate the transmitted data. To do this, the control IC controller encrypts ( ICCTR _{k, Ik} ) the detected voltage values (V _{Lk, jk} , V _{Qk, jk} ) and sends them to the controller ( CTR ) of the control module ( SB ). The controller of the control module ( SB ) decrypts these data in order to determine the) the determined voltage values (V _{Lk, jk} , V _{Qk, jk} ) and thus the voltage vector ( Vec ) to extract or complete. On the basis of the controller ( CTR ) then the regulation of the output voltage ( V _sup ) of the voltage converter ( DCDC ) by.

Is the data connection for whatever reason between controller ( CTR ) and all control IC controllers (ICCTR _{k, lk} ) are too disturbed or even interrupted, the controller regulates the output voltage ( V _sup ) of the voltage converter ( DCDC ) preferably to a Notlaufwert.

FIG. 11

corresponds to the 7 and 9 with the difference that the transmission of the detected voltage _values (V _{Qk, jk} , V _{Lk, jk} ) takes place by means of a wireless data transmission. The control assembly ( SB ) has a wireless data interface ( DSCWL ) of the controller ( CTR ) for wireless data transmission. In this example, the determined voltage values (V _{Qk, jk} ) for controlling the supply voltage ( V _sup ) wirelessly from the LED assemblies ( LB _k ) to the control board ( SB ), where the adjustment of the supply voltage ( V _sup ) depending on these data. In this case, a wireless transmission but also an acoustic, optical or other type of wireless transmission may refer to wirelessly. In this example, the determined voltage values (V _{Lk, jk} , V _{Qk, jk} ) for controlling the supply voltage ( V _sup ) wirelessly from the LED assemblies ( LB _k ) to the control board ( SB ), where the adjustment of the supply voltage ( V _sup ) depending on these data. In this type of transmission is an authentication of the LED modules ( LB _k ) and / or the control ICs (IC _{k, jk} ) are particularly preferred. The detected voltage values (V _{Lk, jk} , V _{Qk, jk} ) of unauthenticated LED assemblies ( LB _k ) and / or the control ICs (ICk _{, jk} ) are preferably discarded. Since EMC interference can also occur, a redundant transmission is indicated. Furthermore, an encryption of the transmission is particularly useful here to make it difficult for an attacker to manipulate the transmitted data. To do this, the control IC controller encrypts ( ICCTR _{k, Ik} ) the detected voltage values (V _{Lk, jk} , V _{Qk, jk} ) and sends them to the controller ( CTR ) of the control module ( SB ). The controller of the control module ( SB ) decrypts these data in order to determine the) the determined voltage values (V _{Lk, jk} , V _{Qk, jk} ) and thus the voltage vector ( Vec ) to extract or complete. On the basis of the controller ( CTR ) then the regulation of the output voltage ( V _sup ) of the voltage converter ( DCDC ) by.

Is the data connection for whatever reason between controller ( CTR ) and all control IC controllers ( ICCTR _{k, Ik} ) too disturbed or even interrupted, the controller regulates the output voltage ( V _sup ) of the voltage converter ( DCDC ) preferably to a Notlaufwert.

glossary

authentication

Authentication is the proof (verification) of the claimed property of an LED assembly ( LB _k ) or a control IC ( IC _{k, Ik} ) to be part of the device. As a method of authentication, for example, the exchange of keys or secret passwords in question. Authentication includes both the authorization check itself and the storage of the authentication result. The authentication preferably has, for example, the authorization of the LED module authenticated by it ( LB _k ) or this authenticated control IC ( IC _{k, Ik} ) transmitted voltage _values (V _{Qk, jk} , V _{Lk, jk} ) as an input _parameter for the regulation of the output voltage ( V _sup ) result.

Wireless

For the purposes of this disclosure, wireless data transmission means transmission by means of optical, acoustic or electromagnetic (in particular by means of high-frequency, inductive and capacitive) methods. Very particularly preferred is the use of the LEDs for the optical transmission itself. In this case, the current sources (Iqk, ₁ , Iq _{k, 2} , ... Iq _{k, j} , .... Iq _{k, n} ) of the k th LED Assembly ( LB _k ) in cooperation with the control IC controller ( ICCTR _{k, Ik} ) of the lk th control IC ( IC _{k, Ik} ) of the k th LED assembly ( LB _k ) as a data interface ( DSSWL _{k, Ik} ) of the lk-th control IC (IC _{k, 1Ik} , with 1≤k≤m and with 1≤I _k ≤o _k ) of the k th LED assembly ( LB _k , with 1≤k≤m) used for wireless data transmission. In this case, the data interface ( DSCWL ) of the controller ( CTR ) realized for wireless data transmission, for example by a photodiode. If a bidirectional transmission is to take place, then it makes sense, although the data interfaces ( DSSWL _{k, Ik} ) of the lk th control ICs (IC _{k, 1Ik} , with 1≤k≤m and with 1≤I _k ≤o _k ) of the respective k th LED assembly ( LB _k , with 1≤k≤m) for wireless data transmission with photodiodes. Possibly. Therefore, it is advantageous to the transmission path of the control ICs ( IC _{k, Ik} ) to the controller ( CTR ) via the LED groups ( _{Lk, jk} ) and the receive path from the controller ( CTR ) to the control ICs ( IC _{k, Ik} ) via a separate wireless data interface ( DSSWL _{k, Ik} ) of the lk th control ICs (IC _{k, 1Ik} , with 1≤k≤m and with 1≤I _k ≤o _k ) of the respective k th LED assembly ( LB _k , with 1≤k≤m), which then has the said photodiode. Possibly. can be used for broadcasting both in the LED assemblies ( LB _k ) as well as in the control module ( SB ) also separate IR LEDs are used, which may possibly have its own power supply.

sensing devices

The detection devices measure voltage drops in the sense of this disclosure. Preferably, these are differential amplifiers which are coupled to an analog to digital converter.

majority

A plurality is a number greater than 1.

power source

A current source in the sense of this disclosure behaves like a real transistor current source. This means that it stabilizes the current in its intended operating range and limits it to a specific current interval. If there is no active voltage from the outside via such a power source, no current will flow because the power source is not within its intended operating range. Therefore, then no or only a very low voltage across the power source falls within the meaning of this disclosure.

Proper operation

A proper operation of a circuit part is present when all operating parameters are within the intended operating tolerances or the circuit part can fulfill its intended function. In a transistor power source, a proper operation is especially not present when no sufficient voltage drops across the current source transistor.

PWM

For the purposes of this writing is under PWM to understand not just the pulse width modulation but any type of pulse modulation that can be used for brightness adjustment. Examples of state of the art include: PFM, PCM, PDM, COT, PWM etc. as well as their randomly controlled variants.

PWM period

Under one PWM -Periode is here to understand the time interval between a first rising edge and a directly following second rising edge or alternatively the time interval between a first falling edge and a directly following second falling edge.

Float

The term "drive" is used in the sense of this disclosure so that the current source significantly determines the current flow through the respective LED group. Ie an increase of the operating voltage ( V _sup ) by 10% results in an increase of the current source current by less than 2.5%, better less than 1%, better less than 0.5%, better less than 0.25%, better less than 0.1%, better less as 0.05%.

LIST OF REFERENCE NUMBERS

ADC _{k, 1}

Analog-to-digital converter of the first control IC ( IC _{k, 1} ) of the k th LED assembly ( LB _k ).

ADC _{k, Ik}

Analog-to-digital converter of the I _k -en control IC ( IC _{k, Ik} ) of the k th LED assembly ( LB _k ).

AP

Operating point. The operating point is a reduced voltage vector ( VecR ) with a certain combination of voltage values at which a consideration of the characteristics of the device or a measurement is made.

B _{Lk1, jk1}

Evaluation _value for the j _k1 -th detected voltage _value ( V _{Lk1, jk1} () Of a voltage drop across a j _k1 -th LED group L _{k1, jk1} ) of the k _1- th LED assembly ( LB _k1 ).

B _{Lk2, jk2}

Evaluation _value for the j _k2 -th detected voltage _value ( V _{Lk2, jk2} ) of a voltage drop across a j _k2- th LED group ( L _{k2, jk2} ) of the k _2- th LED assembly ( LB _k2 ).

B _{Qk1, jk1}

Evaluation _value for the j _k1 -th detected voltage _value ( V _{Qk1, jk1} ) of a voltage drop across a j _k1- th current source ( Iq _{k1, jk1} ) Of the k ₁ th LED package ( LB _k1 ).

B _{Qk2, jk2}

Evaluation _value for the j _k2 -th detected voltage _value ( V _{Qk2, jk2} ) of a voltage drop across a j _k2- th current source ( Iq _{k2, jk2} ) of the k _2- th LED assembly ( LB _k2 ).

CPWM

through the control IC ( ICCTR _{k, Ik} ) generated control signals for generating PWM Signals for driving switches or current sources (Iq _kj , with 1≤k≤m and 1≤j≤nm) for modulating the LED groups (L _{k, j} , with 1≤k≤m and 1≤j≤nm) , The corresponding lines are not shown in the figures. Hereby generates the respective control IC ( ICCTR _{k, Ik} ) one PWM -modulated current source current ( Iq _{k, jk} ). This can be done by separate switches or the switching on and off of the current source transistors.

CTR

Controller. The controller generates the control signal (R _v ) for adjusting the regulation of the output voltage ( V _sup ) of the voltage converter ( DCDC ). The data transfer of the associated control values from the LED modules ( LB _k ) or by the control ICs ( IC _{k, Ik} ) of the LED assemblies ( LB _k ) to the controller is preferably done electrically and wired wireless communication is also useful. The transfer takes place either directly to the controller ( CTR ) and / or indirectly thereto, for example via the voltage vector dimension reduction unit ( VDVM ). An optical, acoustic, magnetic or other wireless transmission of the control values is conceivable if the data transmission is sufficiently secure. For this purpose, an encryption of the data in the transmission of the control ICs ( IC _{k, Ik} ) to the controller and authentication of the control ICs ( IC _{k, Ik} ) by the controller ( CTR ) makes sense. Furthermore, a redundant transmission makes sense. Here, for example, Hamming codes but also multiple transmissions and other methods of the prior art come into question. Also is a transmission via power line communication between the control ICs ( IC _{k, Ik} ) and the controller conceivable. In this case, the transmission is effected by a connection to the supply voltage line for the supply voltage ( V _sup ) modulated data signal. This has a data center frequency which, for example, results as the centroid of the supply voltage spectrum when the range of 0Hz to 100Hz in the spectrum is set to zero. The regulation of the voltage converter ( DCDC ), the modulated data signal must no longer attenuate by a factor of 18 dB or 12 dB or 6 dB or 3 dB in the range of the data center frequency. In this case, the greater levels - ie the lower attenuation of the data signal - to give preference. In contrast, the power sources ( Iq _{k, jk} Fluctuations in the current source current at the data center frequency range are attenuated by more than a factor of 18 dB or 12 dB or 6 dB or 3 dB. Here, the larger attenuations are preferable. This ensures that the data signal is not corrupted by the power sources ( Iq _{k, jk} ) or the voltage converter ( DCDC ) is short-circuited.

DB

Data bus for the transfer of data between the control module ( SB ) via the data interface ( DSC ) of the controller ( CTR ) of the control module ( SB ) on the one hand and the control IC controllers ( ICCTR _{k, Ik} ) of the respective I _k- th control ICs ( IC _{k, Ik} ) within the respective k th LED module ( LB _k ) by means of the data interface ( DSS _{k, Ik} ) of the respective I _k- th control IC ( IC _{k, Ik} ) within the respective k th LED module ( LB _k ) on the other hand.

DB ₁

first data bus for the transfer of data between the control module ( SB ) via the data interface ( DSC ) of the controller ( CTR ) of the control module ( SB ) on the one hand and the control IC controller (ICCTR _1,1 ) of the first control IC ( IC _1.1 ) within the first LED assembly ( LB ₁ ) by means of the data interface (DSS _1,1 ) or first data interface (DSS _A1,1 ) of the first control IC ( IC _1.1 ) within the first LED assembly ( LB ₁ ) on the other hand.

DB ₂

second data bus for transferring the data between the second control IC ( IC _1,2 ) from the control IC controller (ICCTR _1,2 ) of the second control IC ( IC _1,2 ) within the first LED assembly ( LB ₁ ) by means of the data interface (DSS _1,2 ) of the second control IC ( IC _1,2 ) within the first LED assembly ( LB ₁ ) on the one hand and the control IC controller (ICCTR _2.1 ) of the first control IC ( IC _2.1 ) within the second LED assembly ( LB ₂ ) by means of the data interface (DSS _2,1 ) of the first control IC ( IC _2.1 ) within the second LED assembly ( LB ₂ ) on the other hand.

DB ₃

third data bus for transferring the data between the third control IC ( IC _1,2 ) from the control IC controller (ICCTR _1,2 ) of the second control IC ( IC _2.2 ) within the second LED assembly ( LB ₂ ) by means of the data interface (DSS _2,2 ) of the second control IC ( IC _2.2 ) within the second LED assembly ( LB ₂ ) on the one hand and the control IC controller (ICCTR _3.1 ) of the no longer drawn first control IC (IC _3.1 ) within the no longer drawn third LED assembly (LB ₃ ) by means of the data interface (DSS _3,1 ) of the first control IC (IC _3,1 ) within the third LED assembly (LB ₃ ) on the other side.

DB _k

kth data bus. If k = 1, please refer to the description of the first data bus ( DB ₁ ). The kth data bus is used to transfer the data between the o _(k-1) -th control IC (IC _{(k-1, o (k-1)} ) of the preceding (k-1) -th LED Assembly ( LB _(k-1) ) and the first control IC ( IC _{k, 1} ) of the k th LED assembly ( LB _k ).

DB _{i, (Ik-1)}

(I _k -1) -ter internal data bus. The (I _k -1) th data bus is used to transfer the data between the preceding (I _k -1) th control IC (IC _{k, (Ik-1)} ) within the k th LED assembly LED ( LB _k ) and the following I _k- th control IC ( IC _{k, Ik} ) within the k th LED assembly LED ( LB _k ).

DB _{i, Ik}

I _k -ter internal data bus. The I _k th data bus is used to transfer the data between the I _k th control IC ( IC _{k, Ik} ) within the k th LED assembly LED ( LB _k ) and the following (I _k + 1) th control IC ( IC _{k, Ik} ) within the k th LED assembly LED ( LB _k )

DCDC

adjustable voltage converter, which reduces the output voltage ( V _sup ) for the active power supply of the LED groups (L _{k, j} , with 1≤k≤m and 1≤j≤n _m ) in dependence on the control value of the control signal (R _v ).

DSC

Data interface of the controller ( CTR ).

DSCPL

Data interface of the controller ( CTR ) for data transmission via the supply voltage line ( V _sup ).

DSCWL

Data interface of the controller ( CTR ) for wireless data transmission.

DSS _{k, 1}

Data interface of the first control IC ( IC _{k, 1} , with 1≤k≤m) of the k th LED assembly ( LB _k , with 1≤k≤m);

DSS _{Ak, 1}

first data interface of the first control IC ( IC _{k, 1} , with 1≤k≤m) of the k th LED assembly ( LB _k , with 1≤k≤m). The first data interface provides the data connection to the data interface ( DSC ) of the controller ( CTR ) on the control board ( SB ) ago.

DSS _{Ak, Ik}

first data interface of the I _k- th control IC ( IC _{k, Ik} , with 1≤k≤m and 1≤I _k ≤o _k ) of o _{k control} ICs of the k th LED assembly ( LB _k , with 1≤k≤m). The first data interface provides the data connection to the data interface ( DSC ) of the controller ( CTR ) on the control board ( SB ) over the first data bus ( DB ₁ ), when the k-th LED assembly (L _k ) is the first LED assembly (L _k ) (ie, k = 1), and in the other case, when the k-th LED assembly (L _k ) is not the first LED assembly ( LB _k ) (that is, k ≠ 1), the data connection to the second data interface DSS _{Bk, (Ik-1) of} the preceding control IC (IC _{k, (Ik-1)} ) over the (I _k -1) th internal data bus ( DB _{i, (Ik-1)} ) of the k th LED assembly ( LB _k ) or, if the I _k- th control IC ( IC _{k, Ik} ) the first control IC of the k th LED assembly ( LB _k ), the data connection to the second data interface DSS _{B (k-1), o (k-1) of} the o _(k-1) th control IC (IC _{k, o (k-1)} ) of the preceding (k 1) -th LED module (LB ( _k-1) ) via the k th data bus ( DB _k ) ago.

DSS _{Ak, (Ik + 1)}

first data interface of the inside of the k th LED module ( LB _k ) the I _k- th control IC ( IC _{k, Ik} ) subsequent control ICs (IC _{k, (Ik + 1)} ).

DSS _{Bk, Ik}

second data interface of the I _k- th control IC ( IC _{k, Ik} , with 1≤k≤m and 1≤I _k ≤o _k ) of o _{k control} ICs of the k th LED assembly ( LB _k , with 1≤k≤m). The second data interface provides the data connection to the first data interface DSS _{Bk, (Ik + 1) of} the subsequent control IC (IC _{k, (Ik + 1)} ) via the (I _k ) -th internal data bus ( DB _{i, Ik} ) of the k th LED assembly ( LB _k ) when the Ik-te control IC ( IC _{k, Ik} ) not the o _k -te control IC (IC _{k, ok} ) of the k th LED assembly ( LB _k ), or if the I _k th control IC ( IC _{k, Ik} ) the o _k -te control IC (IC _{k, ok} ) of the k th LED assembly ( LB _k ), the data connection to the first data interface DSS _{B (k + 1), 1 of} the first control IC ( IC _{k, 1} ) of the following (k + 1) -th LED module ( LB _{(k + 1)} ) over the (k + 1) -th data bus (DB _{(k + 1)} ).

DSS _{Bk, (Ik-1)}

second data interface of the inside of the k th LED assembly ( LB _k ) the I _k- th control IC ( IC _{k, Ik} ) preceding control ICs (IC _{k, (Ik-1)} ).

DSS _{B (k-1), (ok-1)}

(o _k -1) -th data interface of the within the (k-1) -th LED module ( LB _(k-1) ) o _k- th control IC (IC _{k, ok} ) preceding control ICs (IC _{k, (ok-1)} ).

DSS _{k, Ik}

Data interface of the I _k- th control IC ( IC _{k, Ik} , with 1≤k≤m and 1≤I _k ≤o _k ) of the k th LED assembly ( LB _k , with 1≤k≤m) with o _k as the number of control ICs ( IC _{k, Ik} , with 1≤k≤m and 1≤I _k ≤o _m ) of the k th LED assembly ( LB _k , with 1≤k≤m)

DSSPL _{k, 1}

Data interface of the first control IC ( IC _{k, 1} , with 1≤k≤m) of the k th LED assembly ( LB _k , with 1≤k≤m) for the transmission of data via the supply voltage line ( V _sup );

DSSWL _{k, 1}

Data interface of the first control IC ( IC _{k, 1} , with 1≤k≤m) of the k th LED assembly ( LB _k , with 1≤k≤m) for wireless data transmission;

DSSWL _{k, Ik}

Data interface of the k-th control IC (IC _{k, 1Ik} with 1≤k≤m and 1≤i _k ≤o _k) (the k-th LED module LB _k , with 1≤k≤m) for wireless data transmission;

I ₁

Current of the first power source ( Iq ₁ ), the first LED group ( L ₁ ) flows through in proper operation.

I ₂

Current of the second power source ( Iq ₂ ), the second LED group ( L ₂ ) flows through in proper operation.

I _j

Current of the jth current source ( Iq _j ), the jth LED group ( L _j ) flows through in proper operation.

I _n

Current of the nth current source ( Iq _n ), which is the nth LED group ( L _n ) flows through in proper operation.

I _1,1

Current of the first power source ( Iq _1.1 ) of the first LED assembly ( LB ₁ ), the first LED group ( L _1,1 ) of the first LED assembly ( LB ₁ ) flows through in proper operation.

I _1,2

Current of the second power source ( Iq _1,2 ) of the first LED assembly ( LB ₁ ), the second LED group ( L _1,2 ) of the first LED assembly ( LB ₁ ) flows through in proper operation.

I _{1, j1}

Current of j _1- th current source ( Iq _{1, j1} ) of the first LED assembly ( LB ₁ ), the j _1- th LED group ( L _{1, j1} ) of the first LED assembly ( LB ₁ ) flows through in proper operation.

I _{1, n1}

Stream of n ₁ -th power source ( Iq _{1, n1} ) of the first LED assembly ( LB ₁ ), who the n ₁ -th LED group ( L _{1, n1} ) of the first LED assembly ( LB ₁ ) flows through in proper operation.

I _2.1

Current of the first power source ( Iq _2.1 ) of the second LED assembly ( LB ₂ ), the first LED group ( L _2.1 ) of the second LED assembly ( LB ₂ ) flows through in proper operation.

I _2,2

Current of the second power source ( Iq _2,2 ) of the second LED assembly ( LB ₂ ), the second LED group ( L _2,2 ) of the second LED assembly ( LB ₂ ) flows through in proper operation.

I _{2, j2}

Current of j _2- th current source ( Iq _{2, j2} ) of the second LED assembly ( LB ₂ ), the j _2- th LED group ( L _{2, j2} ) of the second LED assembly ( LB ₂ ) flows through in proper operation.

I _{2, n2}

Stream of n ₂ -th power source ( Iq _{2, n2} ) of the second LED assembly ( LB ₂ ), who the n ₂ -th LED group ( L _{2, n2} ) of the second LED assembly ( LB ₂ ) flows through in proper operation.

I _{k, 1}

Current of the first power source ( Iq _{k, 1} ) of the k th LED assembly ( LB _k ), the first LED group ( L _{k, 1} ) of the k th LED assembly ( LB _k ) flows through in proper operation.

I _{k, 2}

Current of the second power source ( Iq _{k, 2} ) of the k th LED assembly ( LB _k ), the second LED group ( L _{k, 2} ) of the k th LED assembly ( LB _k ) flows through in proper operation.

I _{k, jk}

Current of the j _k- th current source ( Iq _{k, jk} ) of the k th LED assembly ( LB _k ), the j _k -th LED group ( _{Lk, jk} ) of the k th LED assembly ( LB _k ) flows through in proper operation.

I _{k, nk}

Stream of n _k -th power source ( Iq _{k, nk} ) of the k th LED assembly ( LB _k ), who the n _k -th LED group ( L _{k, nk} ) of the k th LED assembly ( LB _k ) flows through in proper operation.

I _{m, 1}

Current of the first power source ( Iqm _{, 1} ) of the mth LED assembly ( LB _m ), the first LED group ( L _{m, 1} ) of the mth LED assembly ( LB _m ) flows through in proper operation.

I _{m, 2}

Current of the second power source ( Iq _{m, 2} ) of the mth LED assembly ( LB _m ), the second LED group ( L _{m, 2} ) of the mth LED assembly ( LB _m ) flows through in proper operation.

I _{m, jm}

Current of the j _m- th current source (Iq _{m, jm} ) of the mth LED assembly ( LB _m ), the j _m- th LED group ( _{Lm, jm} ) of the mth LED assembly ( LB _m ) flows through in proper operation.

I _{m, nm}

Stream of n _m -th power source ( Iq _{m, nm} ) of the mth LED assembly ( LB _m ), who the n _m -th LED group ( Lm _{, nm} ) of the mth LED assembly ( LB _m ) flows through in proper operation.

Iq ₁

first current source for setting the electric current ( I ₁ ) through the first LED group ( L ₁ ). The first power source is thus the first LED group ( L ₁ ).

Iq ₂

second power source for adjusting the electric current ( I ₂ ) through the second LED group ( L ₂ ). The second current source is thus the second LED group ( L ₂ ).

Iq _j

jth power source for adjusting the electric current ( I _j ) through the jth LED group ( L _j ). The jth current source is thus the jth LED group ( L _j ).

Iq _n

nth power source for adjusting the electric current ( I _n ) through the nth LED group ( L _n ). The nth power source is thus the nth LED Group ( L _n ).

Iq _1.1

first current source for setting the electric current ( I _1,1 ) through the first LED group ( L _1,1 ) of the first LED assembly ( LB ₁ ). The first power source of the first LED assembly ( LB ₁ ) is thus the first LED group ( L _1,1 ) of the first LED assembly ( LB ₁ ).

Iq _1,2

second power source for adjusting the electric current ( I _1,2 ) through the second LED group ( L _1,2 ) of the first LED assembly ( LB ₁ ). The second power source of the first LED assembly ( LB ₁ ) is thus the second LED group ( L _1,2 ) of the first LED assembly ( LB ₁ ).

Iq _{1, j1}

j _1- th current source for adjusting the electric current ( I _{1, j1} ) through the j _1- th LED group ( L _{1, j1} ) of the first LED assembly ( LB ₁ ). The j _1- th power source first LED assembly ( LB ₁ ) is thus the j _1- th LED group ( L _{1, j1} ) of the first LED assembly ( LB ₁ ).

Iq _{1, n1}

n _1- th current source for setting the electric current ( I _{1, n1} ) through the n ₁ -th LED group ( L _{1, n1} ) of the first LED assembly ( LB ₁ ). The n ₁ -th power source of the first LED assembly ( LB ₁ ) is thus the n ₁ -then LED group ( L _{1, n1} ) of the first LED assembly ( LB ₁ ).

Iq _2.1

first current source for setting the electric current ( I _2.1 ) through the first LED group ( L _2.1 ) of the second LED assembly ( LB ₂ ). The first power source of the second LED assembly ( LB ₂ ) is thus the first LED group ( L _2.1 ) of the second LED assembly ( LB ₂ ).

Iq _2,2

second power source for adjusting the electric current ( I _2,2 ) through the second LED group ( L _2,2 ) of the second LED assembly ( LB ₂ ). The second power source of the second LED assembly ( LB ₂ ) is thus the second LED group ( L _2,2 ) of the second LED assembly ( LB ₂ ).

Iq _{2, j2}

j _2- th current source for adjusting the electric current ( I _{2, j2} ) through the j _2- th LED group ( L _{2, j2} ) of the second LED assembly ( LB ₂ ). The j ₂ th power source of the second LED assembly ( LB ₂ ) is thus the j _2- th LED group ( L _{2, j2} ) of the second LED assembly ( LB ₂ ).

Iq _{2, n2}

n _2nd power source for setting the electric current ( I _{2, n2} ) through the n ₂ -th LED group ( L _{2, n2} ) the second LED assembly ( LB ₂ ). The n ₂ -th power source of the second LED assembly ( LB ₂ ) is thus the n ₂ -then LED group ( L _{2, n2} ) of the second LED assembly ( LB ₂ ).

Iq _{k, 1}

first current source for setting the electric current ( I _{k, 1} ) through the kth LED group ( L _{k, 1} ) of the k th LED assembly ( LB _k ). The first power source of the k th LED assembly ( LB _k ) is thus the first LED group ( L _{k, 1} ) of the k th LED assembly ( LB _k ).

Iq _{k, 2}

second power source for adjusting the electric current ( I _{k, 2} ) through the kth LED group ( L _{k, 2} ) of the k th LED assembly ( LB _k ). The second power source of the k th LED assembly ( LB _k ) is thus the second LED group ( L _{k, 2} ) of the k th LED assembly ( LB _k ).

Iq _{k1, jk1}

j _k1 -th current source for adjusting the electric current (I _{k1, jk1} ) by the j _k1 -th LED group ( L _{k1, jk1} ) of the k _1- th LED assembly ( LB _k1 ). The j _k1 -th power source of the k _1- th LED assembly ( LB _k1 ) is thus the j _k1- th LED group ( L _{k1, jk1} ) of the k _1- th LED assembly ( LB _k1 ).

Iq _{k2, jk2}

j _k2 -th current source for setting the electric current (I _{k2, jk2} ) through the j _k2 -th LED group ( L _{k2, jk2} ) of the k _2- th LED assembly ( LB _k2 ). The j _k2- th power source of the k _2- th LED assembly ( LB _k2 ) is thus the j _k2- th LED group ( L _{k2, jk2} ) of the k _2- th LED assembly ( LB _k2 ).

Iq _{k, jk}

j _k -th current source for adjusting the electric current ( I _{k, jk} ) through the j _k -th LED group ( _{Lk, jk} ) of the k th LED assembly ( LB _k ). The j _k -th current source of the k th LED assembly ( LB _k ) is thus the j _k- th LED group ( _{Lk, jk} ) of the k th LED assembly ( LB _k ).

Iq _{k, nk}

n _k -th power source for adjusting the electric current ( I _{k, nk} ) through the n _k -th LED group ( L _{k, nk} ) of the k th LED assembly ( LB _k ). The n _k -th power source of the kth LED assembly ( LB _k ) is thus the n _k -then LED group ( L _{k, nk} ) of the k th LED assembly ( LB _k ).

Iqm _{, 1}

first current source for setting the electric current ( I _{m, 1} ) by the first LED group (L _{n, 1} ) of the mth LED assembly ( LB _m ). The first power source of the mth LED assembly ( LB _m ) is thus the first LED group ( L _{m, 1} ) of the mth LED assembly ( LB _m ).

Iq _{m, 2}

second power source for adjusting the electric current ( I _{m, 2} ) through the second LED group ( L _{m, 2} ) of the mth LED assembly ( LB _m ). The second power source of the mth LED assembly ( LB _m ) is thus the second LED group ( L _{m, 2} ) of the nth LED assembly ( LB _m ).

Iq _{m, jn}

j _m -th current source for adjusting the electric current ( I _{m, jm} ) (By the j th LED group _{m Lm, jm} ) of the mth LED assembly ( LB _m ). The j _m -th power source of the m-th LED package ( LB _m ) is thus the j _m- th LED group ( _{Lm, jm} ) of the mth LED assembly ( LB _m ).

Iq _{m, nm}

n _m -th power source for adjusting the electric current ( I _{m, nm} ) through the n _m -th LED group ( Lm _{, nm} ) of the mth LED assembly ( LB _m ). The n _m -th power source of the mth LED assembly ( LB _m ) is thus the n _m -then LED group ( Lm _{, nm} ) of the mth LED assembly ( LB _m ).

IC _1.1

first control IC of the first LED assembly ( LB ₁ ).

IC _1,2

second control IC of the first LED assembly ( LB ₁ ).

IC _{1, I1}

I _{1st control} IC of the first LED module ( LB ₁ ).

IC _{1, o1}

o _{1st control} IC of the first LED module ( LB ₁ ).

IC _2.1

first control IC of the second LED assembly ( LB ₂ ).

IC _2.2

second control IC of the second LED assembly ( LB ₂ ).

IC _{2, I2}

I _{2nd control} IC of the second LED module ( LB ₂ ).

IC _{2, o2}

o _{second control} IC of the second LED module ( LB ₂ ).

IC _{k, 1}

first control IC of the kth LED assembly ( LB _k ).

IC _{k, 2}

second control IC of the k th LED assembly ( LB _k ).

IC _{k, Ik}

(I _k -th control IC of the k-th LED assembly LB _k ).

IC _{k, o1}

o _k -th control IC of the k-th LED package ( LB _k ).

IC _{m, 1}

first control IC of the mth LED assembly ( LB _m ).

IC _{m, 2}

second control IC of the mth LED assembly ( LB _m ).

IC _{m, im}

I _m -th control IC of the mth LED assembly ( LB _m ).

IC _{m, om}

o _m -th control IC of the m-th LED package ( LB _m ).

ICCTR _{k, 1}

Control IC controller of the first control IC ( IC _{k, 1} ) of the k th LED assembly.

ICCTR _{k, Ik}

Control IC controller of the I _k- th control IC ( IC _{k, Ik} ) of the k th LED assembly.

L ₁

first LED group (prior art).

L ₂

second LED group (prior art).

L _j

jth LED group (prior art).

L _n

nth LED group (prior art).

L _1,1

first LED group of the first LED assembly ( LB ₁ ).

L _1,2

second LED group of the first LED assembly ( LB ₁ ).

L _1.3

third LED group of the first LED assembly ( LB ₁ ).

L _1,4

fourth LED group of the first LED assembly ( LB ₁ ).

L _{1, j1}

j ₁ -teLED group of the first LED module ( LB ₁ ).

L _{1, n1}

n _1- th LED group of the first LED module ( LB ₁ ).

L _2.1

first LED group of the second LED assembly ( LB ₂ ).

L _2,2

second LED group of the second LED assembly ( LB ₂ ).

L _2,3

third LED group of the second LED assembly ( LB ₂ ).

L _2,4

fourth LED group of the second LED assembly ( LB ₂ ).

L _{2, j2}

j ₂ -teLED group of the second LED module ( LB ₂ ).

L _{2, n2}

n _2nd LED group of the second LED module ( LB ₂ ).

L _{k, 1}

first LED group of the k th LED assembly ( LB _k ).

L _{k, 2}

second LED group of the k th LED module ( LB _k ).

_{Lk, jk}

j-th LED group of the k th LED assembly ( LB _k ).

L _{k, nk}

n _k -th LED group of the k th LED assembly ( LB _k ).

L _k1,1

first LED group of the k _1- th LED assembly ( LB _k1 ).

L _k1,2

second LED group of the k _1- th LED assembly ( LB _k1 ).

L _{k1, jk1}

j _k1 -teLED group of the k _1- th LED assembly ( LB _k1 ).

L _{k1, nk}

n _k1 -th LED group of the kth LED module ( LB _k1 ).

L _{k2, jk2}

j _k2 -teLED group of the k _2- th LED assembly ( LB _k2 ).

L _{m, 1}

first LED group of the mth LED module ( LB _m ).

L _{m, 2}

second LED group of the mth LED module ( LB _m ).

_{Lm, jm}

j _m -th LED group of the mth LED assembly ( LB _m ).

Lm _{, nm}

n _m -th LED group of the mth LED module ( LB _m ).

LB ₁

first LED module with n ₁ LED groups ( L _1,1 , L, _1,2 , ..., L _{1, j1} , ... L _{1, n1} ).

LB ₂

second LED module with n ₂ LED groups ( L _2.1 , L, _2,2 , ... L _{2, j2} , ... L _{2, n2} ).

LB _k

kth LED module with n _k LED groups ( L _{k, 1} , L, _{k, 2} , ..., _Lk , _jk , ... _{Lk, nk} ).

LB _k

kth LED module with n _k LED groups ( L _{k, 1} , L, _{k, 2} , ..., _Lk , _jk , ... _{Lk, nk} ).

LB _(k-1)

(k-1) -th LED assembly with n ( _k-1 ) LED groups ( L _{k, 1} , L, _{k, 2} ,..., L _{k, j (k-1)} ,... L _{k, n (k-1)} ) corresponding to the k th LED group ( LB _k ) in the data bus.

LB _{(k + 1)}

(k + 1) th LED module with n ( _{k + 1} ) LED groups ( L _{k, 1} , L, _{k, 2} , ..., L _{k, j (k + 1)} , ... L _{k, n (k + 1)} ), the k th LED group ( LB _k ) follows in the data bus.

LB _k1

k _1- th LED module with n _k1 LED groups ( L _k1,1 , L, _k1,2 , ..., _Lk1 , _jk1 , ... _{Lk1, nk1} ).

LB _k2

k ₂ nd LED module with n _k2 LED groups (L _k2,1 , L, _k2,2 ... L _{k2, nk2} ).

LB _m

mth LED module with n _m LED groups ( L _{m, 1} , L, _{m, 2} , ..., L _{m, j m} , ... L _{m, nm} ).

min

a circuit for detecting the minimum of the voltage values ( V _Qj ) of the voltage drops across the power sources ( Iq _j ).

M _{Lk1, jk1}

Detecting device for detecting the voltage value ( V _{Lk1, jk1} ) of the voltage drop across the j _k1- th LED group ( L _{k1, jk1} ) of the k _1- th LED assembly ( LB _k1 ).

M _Q1

Detecting device for detecting the voltage value ( V _Q1 ) of the voltage drop across the first power source ( Iq ₁ ).

M _Q2

Detecting device for detecting the voltage value ( V _Q2 ) of the voltage drop across the second current source ( Iq ₂ ).

M _Qj

Detecting device for detecting the voltage value ( V _Qj ) of the voltage drop across the jth current source ( Iq _j ).

M _Qn

Detecting device for detecting the voltage value ( V _Qn ) of the voltage drop across the nth current source ( Iq _n ).

M _{Qk1, jk1}

Detecting device for detecting the voltage value ( V _{Qk1, jk1} ) of the voltage drop across the j _k1- th current source ( Iq _{k1, jk1} ) of the k _1- th LED assembly ( LB _k1 ).

M _{Lk2, jk2}

Detecting device for detecting the voltage value ( V _{Lk2, jk2} ) of the voltage drop across the j _k2- th LED group ( L _{k2, jk2} ) of the k _2- th LED assembly ( LB _k2 ).

M _{Qk2, jk2}

Detecting device for detecting the voltage value ( V _{Qk2, jk2} ) of the voltage drop across the j _k2- th current source ( Iq _{k2, jk2} ) of the k _2- th LED assembly ( LB _k2 ).

n ₁

Number of LED groups ( L _1,1 , L, _1,2 , ..., L _{1, j1} , ... L _{1, n1} ) of the first LED assembly ( LB ₁ ).

n ₂

Number of LED groups ( L _2.1 , L, _2,2 , ..., L _{2, j 2,} ... L _{1, n 2} ) of the second LED assembly ( LB ₂ ).

n _k

Number of LED groups ( L _{k, 1} , L, _{k, 2} , ..., _{Lk, jk} , ... _{Lk, nk} ) of the kth LED assembly ( LB _k ).

n _k1

Number of LED groups ( L _k1,1 , L, _k1 , ₂ , ..., L _{k1, jk1} , ... L _{k1, nk1} ) of the k _1- th LED module ( LB _k1 ).

n _k2

Number of LED groups (L _k2,1 , L, _k2,2 , ..., L _{k2, jk2} , ... L _{k2, nk2} ) of the k _2- th LED assembly ( LB _k2 ).

n _m

Number of LED groups ( L _{m, 1} , L, _{m, 2} , ..., L _{m, j m,} ... L _{1, nm} ) of the m-th LED assembly ( LB _m ).

PWM

For the purposes of this writing is under PWM to understand not just the pulse width modulation but any type of pulse modulation that can be used for brightness adjustment. Examples of state of the art include: PFM, PCM, PDM, COT, PWM etc. as well as their randomly controlled variants. Under one PWM Period is therefore to be understood here as the time interval between a first rising edge and a directly following second rising edge or alternatively the time interval between a first falling edge and a directly following second falling edge.

R _V

Control signal of the controller ( CTR ) to the voltage converter ( DCDC ) with which the output voltage ( V _sup ) of the voltage converter is set. It can be individual analog and digital signals, but also a bus system. The data transmission of the associated control values is preferably carried out electrically and by wire. The transfer takes place either directly to the controller ( CTR ) and / or indirectly thereto, for example via the voltage vector dimension reduction unit ( VDVM ). An optical, acoustic, magnetic or other wireless transmission of the control values is conceivable. Also, transmission via power line communication is conceivable. In this case, the transmission is effected by a connection to the supply voltage line for the supply voltage ( V _sup ) modulated data signal. This has a data center frequency which, for example, results as the centroid of the supply voltage spectrum when the range of 0Hz to 100Hz in the spectrum is set to zero. The regulation of the voltage converter may then no longer modulate the modulated data signal in the region of the data center frequency Attenuate factor of 18dB or 12dB or 6dB or 3 dB. In this case, the greater levels - ie the lower attenuation of the data signal - to give preference. In contrast, the current sources must attenuate fluctuations in the current source current in the range of the data center frequency by more than a factor of 18 dB or 12 dB or 6 dB or 3 dB. Here, the larger attenuations are preferable.

SB

Control module.

SW _V

Threshold for the evaluation of the evaluation values ( B _{Qk1, jk1} with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; B _{Qk2, jk2} , with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ; B _{Lk1, jk1} with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; B _{Lk2, jk2} , with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ;) of the voltage _values ( V _{Qk1, jk1} with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; V _{Qk2, jk2} with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ; V _{Lk1, jk1} with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; V _{Lk2, jk2} , with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ;) of the voltage vector ( Vec ) by the voltage vector dimension reduction unit ( VDVM ). The threshold value (SW _v ) can also be another element of the voltage vector ( Vec ) or the evaluation value ( B _{Qk1, jk1} with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; B _{Qk2, jk2} with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ; B _{Lk1, jk1} with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; B _{Lk2, jk2} , with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ;) of such another element of the voltage vector ( Vec ) be.

VDVM

Voltage vector dimension reduction unit. The voltage vector dimension reduction unit evaluates the at least two detected voltage values ( V _{Qk1, jk1} with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; V _{Qk2, jk2} with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ; V _{Lk1, jk1} with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; V _{Lk2, jk2} , with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ;) of the voltage vector ( Vec ) by determining one evaluation value each ( B _{Qk1, jk1} with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; B _{Qk2, jk2} with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ; B _{Lk1, jk1} with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; B _{Lk2, jk2} , with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ;) of the respective voltage _value ( V _{Qk1, jk1} with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; V _{Qk2, jk2,} with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ; V _{Lk1, jkl} , with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; V _{Lk2, jk2} , with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ;) and discards at least one voltage _{value of} the voltage vector ( Vec ) whose evaluation value has at least one threshold ( SW _V ) exceeds or falls below. The threshold value (SW _v ) can also be another element of the voltage vector ( Vec ) or the evaluation value ( B _{Qk1, jk1} with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; B _{Qk2, jk2} with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ; B _{Lk1, jk1} with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; B _{Lk2, jk2} , with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ;) of such another element of the Voltage vector ( Vec ) be. Whether an overrun or underrun leads to the Verwurf is a pure question of the implementation of the evaluation. The voltage vector dimension reduction unit generates as a result of this process, thus a reduced voltage vector ( VecR ) from the voltage vector ( Vec ).

Vec

Voltage vector of at least two recorded voltage values ( V _{Lk1, jk1} . V _{Lk2, jk2} . V _{Qk1, jk1} , V _{Qk2, jk2} ).

VECM

modified voltage vector. The modified voltage vector is calculated from the reduced voltage vector ( VecR ) is typically generated by an affine map.

VecR

reduced voltage vector from a true subset of the set of at least two detected voltage _values (V _{Lk1, jk1,} V _{Lk2, jk2} . V _{Qk1, jk1} . V _{Qk2, jk2} ) containing the voltage vector ( Vec ) form.

VecRM

Mean of the voltage values representing the reduced voltage vector ( VecR ) form.

V _{Lk1, jk1}

j _k1 -ter detected voltage _{value of} a voltage drop across a j _k1 -th LED group ( L _{k1, jk1} ) of the k _1- th LED assembly ( LB _k1 ).

V _{Lk2, jk2}

j _k2 -ter detected voltage _{value of} a voltage drop across a j _k2 -th LED group ( L _{k2, jk2} ) of the k _2- th LED assembly ( LB _k2 ).

V _off

Offset which is added to the second lowest power source voltage (V _{Qk, jk} ) or subtracted from the second largest group LED voltage (V _{Lk, jk} ) as a safety margin.

V _Q1

first detected voltage value of a voltage drop across the first current source ( Iq ₁ ).

V _Q2

second detected voltage value of a voltage drop across the second current source ( Iq ₂ ).

V _Qj

j-ter detected voltage value of a voltage drop across the jth current source ( Iq _j ).

V _Qn

nth detected voltage value of a voltage drop across the nth current source ( Iq _n ).

V _{Qk1, jk1}

j _k1 -ter detected voltage _{value of} a voltage drop across a j _k1- th current source ( Iq _{k1, jk1} ) of the k _1- th LED assembly ( LB _k1 ).

V _{Qk2, jk2}

j _k2 -ter detected voltage _{value of} a voltage drop across a j _k2- th current source ( Iq _{k2, jk2} ) of the k _2- th LED assembly ( LB _k2 ).

V _sup

Output voltage or output voltage value of the controllable voltage converter ( DCDC ). The output voltage value of the output voltage depends on a voltage regulation signal ( R _V ) of the controller ( CTR ).

List of quoted writings

Cited pamphlets:

DE 10 318 780 A1 . US 2010/0 026 209 A1 . US Pat. No. 8,519,632 B2 . US 8 319 449 B2 . US Pat. No. 7,157,866 B2 . DE 10 2005 028 403 B4 . DE 10 2006 055 312 A1 . EP 1 499 165 B1 . WO 2013/030 047 A1 . EP 1490 772 B1

Quoted registrations:

DE 10 2016 108 479.4 . EN 10 2016 108 480.8 . DE 10 2016 108 481.6 . DE 10 2016 108 482.4 . DE 10 2016 108 483.2 . DE 10 2016 108 484.0 . DE 10 2016 108 485.9 . DE 10 2016 108 486.7 . DE 10 2016 108 487.5

Claims (1)

A device for supplying a plurality of m * n LED groups (L _1,1 , L _{, 1,2} , ..., L _{1, j 1,} ... L _{1, n 1,} L _2,1 , L, _{2 , 2} , ..., L _{2, j2} , ... L _{2, η 2} ; ......... L _{k, 1} , L, _{k, 2} , ..., L _{k, jk,.} ..L _{k, nk} ; ........ L _{m, 1} , L, _{m, 2} , ..., L _{m, j m} , ... L _{m, nm} ), which are located in m LED Assemblies (LB ₁ ... LB _m ) are located, comprising electrical energy - at least one control IC (IC _{k, Ik} ) per LED assembly (LB _k ) of the m LED assemblies (LB ₁ ... LB _m ) which is a bus slave of a bus master; - A plurality of current sources (Iq _1,1 , Iq _1,2 , .... Iq _{1, j1} , .... Iq _{1, n1} , Iq _2.1 , Iq _2.2 , .... Iq _{2nd , j2} , .... Iq2 _{, n2} ; Iqk _{, 1} , Iqk _{, 2} , .... Iqk _{, jk} , .... Iqk _{, nk} ; Iqm _{, 1} , Iqm _{, 2} , .... Iq _{m, jm} , .... Iq _{m, nm} ), each of the said LED groups (L _1,1 , L, _1,2 , ..., L _{1, j1} , ... L _{1, n 1,} L _2,1 , L, _2,2 , ..., L _{2, j 2} , ... L _{2, n 2} ; _......... L _{k, 1} , L, _{k , 2} , ..., L _{k, jk} , ... L _{k, n k} ; L _{m, 1} , L, _{m, 2} , ..., L _{m, j m} , ... L _{m, nm} ) , Wherein each of the current sources (Iq _{k, j} , with 1≤k≤m and 1≤j≤n _m ), is arranged and provided for, in proper operation, in each case an electric current (I _{k, j} , with 1≤k ≤m and 1≤j≤n _m ), by the respectively connected LED group (L _{k, j} , with 1≤k≤m and 1≤j≤n _m ) of the plurality of LED groups (L _1,1 , L, _1,2 , ..., L _{1, j1} , ... L _{1, n 1,} L _2,1 , L, _2,2 , ..., L _{2, j 2,} ... L _{2, n 2 Lk, 1} , L, _{k, 2} , ..., _{Lk, jk} , ... _{Lk, nk} ; _......... L _{m, 1} , L, _{m, 2,.} .., L _{m, jm} , ... L _{m, nm} ) in the amount of a respective assigned fixed th or adjustable current source current (I _{k, j,} and with 1≤k≤m 1≤j≤n _m) to drive, and • said at least one control IC (IC _{k, Ik)} at least one of the current sources (Iq _{k, j} comprises with 1≤k≤m and 1≤j≤n _m); - Detection _devices (M _{Lk1, jk1} , with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; M _{Lk2, jk2} , with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ; M _{Qk1, jk1)} with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; M _{Qk2, jk2} , with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ;) for detecting the at least two voltage _values (V _{Qk1, jk1} , with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; V _{Qk2, jk2} , with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ; V _{Lk1, jk1} , with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 , V _{Lk2, jk2} , with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ) of at least two voltage _drops across at least two LED groups (L _{k1, jk1} , with 1≤k ₁ ≤ m and 1 ≦ j _k1 ≦ n _k1 ; L _{k2, jk2} , where 1≤k ₂ ≦ m and 1 _≦ j _{k2 ≦} n _k2 ) and / or current sources (Iq _{k1, jk1} , where 1≤k ₁ ≦ m and 1 ≦ j _k1 ≦ n _k1 ; Iq _{k2, jk2} , where 1≤k ₂ ≦ m and 1 _≦ j k2 _≦ n _k2 ) of the plurality of current sources (Iq _1,1 , Iq _1,2 , .... Iq _{1, j1,} .... Iq _{1, n1; 2.1} Iq, Iq _2.2, .... Iq _{2, j2,} .... Iq _{2, n2;} Iq _{k, 1,} I q _{k, 2,.} ... Iq _{k, jk,} .... Iq _{k, nk} ; Iq _{m, 1} , Iq _{m, 2} , .... Iq _{m, jm} , .... I q _{m, nm} ) for forming an at least two-dimensional voltage _value vector (Vec) from the at least two voltage _values thus detected (V _{Qk1, jk1} , where 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; V _{Qk2, jk2} , with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ; V _{Lk1, jk1} , where 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; V _{Lk2, jk2} , with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ) of at least one of the at least two LED groups (L _{k1, jk1} , with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1) L _{k2, jk2} , with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ) and / or at least one of the at least two current sources (Iq _{k1, jk1} , with 1≤k ₁ ≤m and 1≤j _k1 ≤ n _k1 ; Iq _{k2, jk2} , with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 , • wherein the at least one control IC (IC _{k, Ik} ) _comprises at least one of the detection _devices (M _{Lk1, jk1} , with 1 ≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; M _{Lk2, jk2} , where 1≤k ₂ ≤m and _1≤j k2 _≤nk2 ; M _{Qk1, jk1} , where 1≤k ₁ ≤m and 1≤ j _k1 ≤n _k1 , M _{Qk2, jk2} , with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ;); - a voltage vector _dimension reduction _unit (VDVM), • the at least two detected voltage _values (V _{Qk1, jk1} , with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; V _{Qk2, jk2} , where 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ; V _{Lk1, jkl} , where 1≤k ₁ ≤m and 1 ≤j _k1 ≤n _k1 ; V _{Lk2, jk2} , where 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ) of the voltage vector (Vec) by determining each evaluation _value (B _{Qk1, jk1} , with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; B _{Qk2, jk2} , with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ; B _{Lk1, jk1} , with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; B _{Lk2, jk2} , with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ) of the respective voltage _value (V _{Qk1, jk1} , with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; V _{Qk2, jk2} , with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ; V _{Lk1, jk1} , with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; V _{Lk2, jk2} , with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ;), and • discards at least the voltage value of the voltage vector (Vec) whose evaluation _value (B _{Qk1, jk1} , with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; B _{Qk2, jk2} , with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 , B _{Lk1, jk1} , with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; B _{Lk2, jk2} , with 1≤k ₂ ≤ m and 1≤j _k2 ≤n _k2 ;) exceeds _or falls _below a threshold value (SW _v ), wherein a reduced voltage vector (VecR) is generated by the voltage vector reduction unit (VDVM) from the voltage vector (Vec), and wherein the threshold value (SW _v ) also another voltage _value (V _{Qk1, jk1} , with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; V _{Qk2, jk2} , with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ; V _{Lk1, jkl} , mi t 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; V _{Lk2, jk2} , where 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ) of the voltage vector (Vec) or its evaluation _value (B _{Qk1, jk1} with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; B _{Qk2, jk2} , with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ; B _{Lk1, jk1} , with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; B _{Lk2, jk2} , with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ;); - a controllable voltage converter (DCDC), in particular a switching power supply, for the regulated power supply of the LED groups (L _{k, j} , with 1≤k≤m and 1≤j≤n _m ) and for the supply of the electrical currents (I _{k, j} with 1≤k≤m and 1≤j≤n _m ) into the LED groups (L _{k, j} , with 1≤k≤m and 1≤j≤n _m ); a controller (CTR) adapted and arranged to regulate the output voltage (V _sup ) of the voltage converter (DCDC) by means of a control signal (R _v ) having a control characteristic based on the voltage values of the reduced voltage vector (VecR) located in a control board (SB) and which is the bus master; - at least one control IC controller (ICCTR _{k1, jk1} , ICCTR _{k2, jk2} ), • the part of the control IC (IC _{k, Ik} ) and • the pulse width modulated signal (CPWM) for the control of switches or current sources (Iq _{k, jk} , with 1≤k≤m and 1≤j _k ≤n _k ) for modulating the LED groups (L _{k, j} , with 1≤k≤m and 1≤j≤n _m ), and the controller (CTR) and / or the voltage _{vector dimension reduction unit} (VDVM) receive the at least one detected voltage _value (V _{Qk1, jk1} , where 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; V _{Qk2, jk2} , where 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ; V _{Lk1, jkl} , with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; V _{Lk2, jk2} , with 1≤k ₂ ≤m and 1≤j _k2 ≤n _k2 ) of the voltage vector (Vec) or the at least two detected voltage _values (V _{Qk1, jk1} , with 1≤k ₁ ≤m and 1≤j _k1 ≤n _k1 ; V _{Qk2, jk2} , with 1≤k ₂ ≤ m and 1 _≦ j k2 _≦ n _k2 ; V _{Lk1, jk1} , where 1≤k ₁ ≦ m and ₁ ≦ j _k1 ≦ n _k1 ; V _{Lk2, jk2} , where 1≤k ₂ ≦ m and 1 _≦ j k2 _≦ n _k2 ) of the voltage vector (Vec), if the device comprises only one control IC (IC _{k, Ik} ), characterized in that - the control IC (IC _{k, Ik} ) of the m LED modules (LB ₁ ... LB _m ) are each intended to participate in an auto-addressing process, and - that the control IC (IC _{k, Ik} ) of the m LED assemblies (LB ₁ ... LB _m ) are each intended to connect to the controller (CTR) and to authenticate there and that a voltage value (V _{Qk, j} , with 1≤k≤m and 1≤j≤nm; V _{Lk, j} , with 1≤k≤m and 1≤j≤n _m ) of the voltage vector (Vec) in the absence of authentication of the control IC (IC _{k, Ik} ) by the voltage vector dimensional reduction unit (VDVM) is discarded by the reduced one Voltage vector (VecR) to form.

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