DE102009047290A1 - Method for setting an electronic ballast, electronic ballast and matching unit - Google Patents

Abstract

A method is proposed for adjusting an electronic ballast, in which information is transmitted to the electronic ballast in a setting mode of the electronic ballast. Furthermore, a corresponding electronic ballast and a matching unit are specified.

Description

The invention relates to a method for adjusting an electronic ballast, an electronic ballast and an adjustment unit.

For example, an electronic ballast (ECG) for a light source is matched and tested at the end of production to ensure a high degree of reliability and high quality of the electronic ballast.

The adjustment is preferably carried out on the not yet mounted in a housing circuit board. This makes it possible to fine tune the individual resistors. This approach is complex because individual components are adjusted in a separate setting step prior to assembly of the ECG in a housing and only then the assembly takes place in a separate step. If an error should occur due to the installation, it often goes unnoticed, since the test procedure is already completed. If the test procedure is carried out only after assembly, this corresponds to an additional work step, because adjustment and test are interrupted by an intermediate mounting.

An electronic ballast can also use a microcontroller. It is also necessary or advantageous here for the ECG to be parameterized in a calibration phase. However, if the electronic ballast with microcontroller assembled, the access z. B. no longer possible on the memory of the microcontroller.

The object of the invention is to avoid the disadvantages mentioned above and in particular to provide an efficient way of parameterizing an electronic ballast.

This object is achieved according to the features of the independent claims. Further developments of the invention will become apparent from the dependent claims.

• – bei dem in einem Einstellmodus des elektronischen Vorschaltgeräts eine Information an das elektronische Vorschaltgerät übertragen wird.

To solve the problem, a method is proposed for setting an electronic ballast,

• - In which in a setting mode of the electronic ballast information is transmitted to the electronic ballast.

Thus, it is advantageous that the electronic ballast (ECG) is adjustable, programmable or parameterizable in a setting mode. Also, it can be tested in this setting mode. The setting mode preferably differs from an operating mode of the electronic ballast, in which z. B. no adjustment or programming should be made.

An electronic ballast can be adjusted during the manufacturing process (if necessary). In this case, the electronic ballast is preferably not yet assembled, it can thus be corrected, for example, according to appropriate measurements resistors by a corresponding placement. This is complex and requires another test after assembly to ensure that the TOE is working properly. The approach presented here enables the ballast to be adjusted in its assembled state, so that testing and balancing can be carried out in a combined process step.

It is an embodiment that the information is transmitted via input terminals of the electronic ballast.

This is advantageous because it makes it possible to influence the electronic ballast independently of the output circuit of the electronic ballast. Thus, the proposed solution for a variety of electronic ballasts can be used.

It is also a development that the information is modulated to an input voltage of the electronic ballast.

In the context of another development, half-waves of the input voltage are modulated.

A development consists in that half-waves of the input voltage are amplitude-modulated, frequency-modulated or phase-modulated.

A further development is that the setting mode of the electronic ballast is activated by means of an external signal.

Thus, a specially coded signal may preferably be transmitted via the contacts of the electronic ballast, so that the electronic ballast activates the setting mode.

Another development is that the setting mode of the electronic ballast is activated via a corresponding control of the lamp contacts of the electronic ballast.

In particular, those contacts of the electronic ballast for transmitting the external signal can be used, which are provided for connecting at least one lamp. This has the advantage that for the adjustment of the electronic ballast this must have no separate contacts.

It is also a development that the setting mode of the electronic ballast is activated and / or the information is transmitted to the electronic ballast by a change and / or modulation of a helical resistance of a light source is simulated.

Thus, the existing contacts of the electronic ballast for connecting at least one light source or at least one lamp can be used to transmit the external signal and to activate the setting mode. It is also possible that these contacts are used to transmit the information) to the electronic ballast. The transmission takes place by a modulation of a signal which is detectable by the electronic ballast. The modulation can be used to transfer data.

It is also a development that the electronic ballast determines measured values and provides them via an interface.

Furthermore, it is a development that the electronic ballast provides the measured values via at least one contact for controlling the lamp.

As part of an additional training, the measured values are transmitted modulated.

In particular, a frequency modulation, a phase modulation or an amplitude modulation can be used for this purpose.

A further development consists in comparing the measured values with external measured values and, based on the comparison, transferring information to the electronic ballast.

This makes it possible that, by comparing the external measured values with the measured values of the ballast, a conversion of information to be transmitted to the electronic ballast (eg setting parameters) can take place such that a measuring difference between the electronic ballast and an adjusting unit is compensated , If, for example, the electronic ballast is to be set to a value "14", wherein a measurement of the electronic ballast supplies a current value "11" and a measurement of the (calibrated) balancing unit delivers a current value "10", the balancing unit can implement such a method make sure that a value of "15" is set on the electronic ballast. This eliminates a calibration of the electronic ballast by the adjustment unit takes into account the offset between the measured values determined when setting the electronic ballast.

One embodiment is that the electronic ballast provides measured values or information by modulating a half-bridge frequency of a half-bridge of the electronic ballast.

An alternative embodiment is that an adjustment unit transmits the external signal and / or the information to the electronic ballast.

A next embodiment is that the electronic ballast is parameterized and / or tested.

It should be noted that the test may have measured values which can be detected and output by the device itself. For example, the device can approach operating points that do not occur in practice. These resulting measured values can be quickly tested externally for compliance with limit values. In addition, however, it is also possible to test relationships between the measured values (eg in the form of functions of several measured values) with respect to predetermined limits.

The above object is also achieved by an electronic ballast for at least one lamp or at least one lamp comprising a processor unit or another circuit, for. As an ASIC, for carrying out the method described herein.

Also, the above object is achieved by means of an adjustment unit for communicating with an electronic ballast, wherein the adjustment unit has a controller which is arranged such that the method described herein is feasible.

A development consists in that the adjustment unit is set up for parameterization, for testing and / or for setting the electronic ballast.

Embodiments of the invention are illustrated and explained below with reference to the drawings.

Show it:

1 schematically a block diagram comprising an electronic ballast (ECG) and an adjustment unit for adjusting the electronic ballast;

2 Steps of a method for setting or parameterizing the electronic ballast;

3 a block diagram comprising the electronic ballast and the matching unit according to 1 wherein the balancing unit can influence, in particular modulate, the input voltage of the ballast;

4 a sinusoidal input voltage at which the amplitude or phase of individual half-waves was changed (n).

With the approach proposed here, it is possible to have an electronic ballast (ECG) comprising at least one microcontroller (or correspondingly at least one processor unit with conventional retention, ie, for example, with an input / output unit and / or with a memory) in an already assembled state to set, parameterize, z. B. to match and / or test.

The parameterization here includes z. This includes, for example, the transmission of data to the TOE or the activation of data already accessible to the TOE (eg already stored in the memory of the TOE). This parameterization can thus include a transmission of control signals or addressing signals or even (simple) codes, by means of which the TOE can perform a corresponding parameterization.

• – einen Lampentyp,
• – einen Lampenstrom, ggf. einen Bereich eines Lampenstroms,
• – Parameter zur Sicherheitsabschaltung, z. B. Grenzspannungswerte bei deren Erreichen bzw. Überschreiten die Sicherheitsabschaltung des EVG erfolgen soll,
• – eine Leistungsgrenze,
• – eine Identifikationsinformation, z. B. umfassend eine Seriennummer,
• – Fertigungsdaten,
• – herstellerspezifische Daten.

For example, it is possible for an adjustment unit to transparently transmit to the TOE the data that the TOE should use. Examples of such data include

• A lamp type,
• A lamp current, possibly a range of a lamp current,
• - Parameters for safety shutdown, eg. B. Limit voltage values at which the safety shutdown of the TOE is to be achieved if it is exceeded or exceeded,
• - a performance limit,
• - an identification information, for. Comprising a serial number,
• - manufacturing data,
• - manufacturer-specific data.

The data can also already be stored in a memory of the TOE and be activated by means of a transmission of access information from the matching unit to the TOE.

Communication with the TOE can take place in different ways.

For example, it is possible that the electronic ballast is controlled via an adjustment unit. In this case, the adjustment unit simulates a luminous means, wherein the balancing unit can vary, for example, a filament resistance of the luminous means. This allows information to be transferred from the matching unit to the ECG.

It is also possible to obtain information from the TOE. This can be achieved by changing a half-bridge frequency of the ECG. So z. B. frequency modulated data from a half-bridge of the ECG to the matching unit to be transmitted.

In particular, the matching unit may first send a trigger signal to the ECG, which causes the ECG to change to a setting mode. In the set mode, the ECG responds to a transmission of information from the matching unit. After the setting of the ECG is completed, another signal can be sent to the ECG, which ends the setting mode. It is also possible for the electronic ballast to register a timeout, that is to say an exceeding of a time duration since the last information from the adjustment unit, and as a result to terminate the setting mode on its own.

1 schematically shows a block diagram comprising an electronic ballast 101 and a matching unit 102 ,

The electronic ballast 101 includes a rectifier 103 , a processor 104 , a half bridge 105 , a transformer 106 (with a primary side comprising connections 107 . 108 and with a secondary side comprising connections 109 . 110 ), a resistance 111 as well as a switch 112 and a capacitor 113 ,

The rectifier 103 is input side with a voltage source 114 connected and supplies the processor 104 as well as the half bridge 105 with a DC voltage.

The connection 107 of the transformer 106 is via a series circuit comprising the switch 112 and the capacitor 113 with the half bridge 105 connected. The connection 108 the transformer 106 is on the one hand about the resistance 111 with ground and on the other hand with the processor 104 connected. The processor 104 controls the half bridge 105 , In particular, electronic switches (not shown) of the half-bridge 105 ,

The matching unit 102 includes a controller 115 , a transformer 116 (with a primary side comprising connections 117 . 118 and with a secondary side comprising connections 119 . 120 ) and a variable resistor 121 ,

The connections 119 . 120 of the transformer 116 are about the variable resistor 121 interconnected, with the resistance 121 about the controller 115 can be influenced. The connection 117 of the transformer 116 is with the connection 109 of the transformer 106 and the connection 118 of the transformer 116 is with the connection 110 of the transformer 106 connected.

Furthermore, the half bridge 105 with the controller 115 connected.

The desk 112 Switches the transformer in a normal operating mode 106 to heat the filament of the lamp. During operation, this heating function can then be switched off again. To receive data is the switch 112 switched on. Such switching can be done by a signal from the voltage source 114 initiated by the processor 104 is evaluated. Also, the switch can 112 already be turned on, because a coil was previously detected: So the ECG can detect if a coil is present, for. B. by means of a small test current.

Thus, it is advantageous that the adjustment and the test of the TOE can be performed in one step after the ECG has been assembled. This saves a production step and thus reduces the time required to produce the ECG. Also space is saved on the circuit board of the ECG, since no separate test adapter or test plug is needed. Overall, the costs for calibration and testing of the TOE can be reduced.

Another advantage is that the ECG can be programmed flexibly and customer-specific, in particular by the operating parameters z. B. for specific lamps and / or customer requests recorded and / or activated.

During adjustment, internal and external measurements can be synchronized. The internal measurement results can be compared with the external measurement results, whereby any tolerances are compensated efficiently by the comparison measurements. Thus it is possible that components can be dimensioned more generously (eg inaccurate). This reduces the cost of manufacturing.

2 shows steps of a procedure for setting or parameterizing the TOE.

In one step 201 the first data is sent from the matching unit to the TOE (see also "Data In" in 1 ). This starts the parameterization. The TOE is determined in one step 202 Measured values (also referred to as internal measured values), and the adjustment unit also determines measured values (also referred to as external measured values). The ECG puts in one step 203 the internal measurement values of the adjustment unit (compare also "Data Out" in 1 ) to disposal. The matching unit can be based on the provided measured values in one step 204 perform a calibration calculation taking into account the external (ie your own) measured values and the result of the calibration calculation in one step 205 to the TOE.

Due to the two measurements and the subsequent comparison, the balancing unit can effectively compensate for a measurement error of the electronic ballast by, for. B. an offset of the ECG is compensated by the comparison measurement of the adjustment unit. It is thus possible to carry out a parameterization of values in the electronic ballast with high accuracy on the basis of this comparison measurement.

The type of adjustment proposed here also makes it possible to adjust parameters which result from a plurality of parameters which can be determined by the electronic ballast and / or by the balancing unit. In particular, it is possible that the electronic ballast supplies a default, which is set by means of several parameters, measured by the ECG.

Alternatively or in combination with the approaches explained above, it is possible to use input terminals of the TOE to transmit the information to the TOE. In this case, the input voltage (correspondingly also the input current or generally the supply signal) of the electronic ballast can be modulated accordingly. For example, it is possible to modulate high-frequency signals to the input voltage. In this case, the ECG may include a filter (or a demodulator) to decode the modulated signal and to evaluate accordingly.

A ripple control technique can also be used to transmit information to the TOE. For this purpose, a transfer of information, for. B. in the form of control commands, by pulse trains z. B. in a frequency range of 110 Hz to about 2000 Hz, which are superimposed on the mains voltage with an amplitude of, for example, about 1% to 9% of the respective rated voltage. The so-called ripple control frequency can be switched on and off for transmission in accordance with a specific code (pulse raster), whereby a pulse telegram is produced.

Another variant is to modulate individual mains half-waves of the input voltage. In this case, the amplitude, the frequency and / or the phase can be modulated.

This approach is advantageous because a corresponding modification of an existing TOE can be accomplished with little effort. For example, the input voltage is already measured in many electronic ballasts. The electronic ballast or the processor of the electronic ballast is extended so that an analysis of the frequency, phase and / or amplitude can be performed. Additional additional components are not necessary in the TOE.

It is also advantageous that the described method is used in the manufacture of the electronic ballast and thus voltages and / or frequency patterns can be created, which are not permitted in public networks. It is also an advantage that the solution described is independent of the output circuit of the TOE. As a result, this approach can be used universally for a large number of different electronic ballasts.

The generated voltage patterns and / or frequencies that are applied to the ECG, by using programmable power supplies, such as. B. used in manufacturing, are generated. A manipulation of the information can be done in particular via a corresponding programming of the adjustment unit (ie by software).

3 shows a block diagram comprising the electronic ballast 101 as well as the adjustment unit 301 according to 1 , wherein the adjustment unit 301 the input voltage of the ECG 101 can influence. 3 partly based on 1 ; in this respect, the description also applies 1 directed.

Instead of in 1 shown power supply is a programmable power supply 301 which provides a modulated input voltage for the ECG. The modulation can be via the controller 115 the matching unit 102 respectively. Thus, the information from the matching unit 102 to the TOE 101 over a connection 302 transfer. Optionally, the path between the transformers 106 and 116 omitted.

Furthermore, a demodulator 303 be provided in the ECG, which immediately demodulates the input voltage and a demodulated signal 304 the processor 104 provides. This demodulator 303 can be before or after the rectifier 103 be arranged. Optionally, the demodulator 303 omitted, the processor 104 can be from the signal of the rectifier 103 analyze and evaluate the modulated signal, in particular with regard to its amplitude, frequency and / or phase.

4 shows a sinusoidal input voltage at which the amplitude or phase of individual half-waves has been changed (n). In this change, the information to be transmitted to the TOE can be coded.

LIST OF REFERENCE NUMBERS

101

EVG

102

adjustment unit

103

rectifier

104

processor

105

half bridge

106

exchangers

107-110

Connections of the transformer 106

111

resistance

112

switch

113

capacitor

114

power supply

115

control

116

exchangers

117-120

Connections of the transformer 116

121

variable resistance

301

programmable power supply

302

Connection from the controller 115 to the power supply 301

303

Demodulator (optional)

304

demodulated signal

Claims (18)

Method for setting an electronic ballast ( 101 ), In which in a setting mode of the electronic ballast information (Data In) to the electronic ballast ( 101 ) is transmitted. The method of claim 1, wherein the information is transmitted via input terminals of the electronic ballast. Method according to one of the preceding claims, in which the information is modulated to an input voltage of the electronic ballast. Method according to claim 3, in which half-waves of the input voltage are modulated. Method according to one of Claims 3 or 4, in which half-waves of the input voltage are amplitude-modulated, frequency-modulated or phase-modulated. Method according to one of the preceding claims, in which the setting mode of the electronic ballast ( 101 ) is activated by means of an external signal. Method according to one of the preceding claims, wherein the setting mode of the electronic ballast is activated via a corresponding control of the lamp contacts of the electronic ballast. Method according to one of the preceding claims, in which the setting mode of the electronic ballast is activated and / or in which the information is transmitted to the electronic ballast by a change and / or modulation of a helical resistance of a lighting means is simulated. Method according to one of the preceding claims, in which the electronic ballast determines measured values and provides them via an interface. The method of claim 9, wherein the electronic ballast provides the measurements via at least one contact for controlling the lamp. Method according to one of claims 9 or 10, in which the measured values are transmitted modulated. Method according to one of Claims 9 to 11, in which the measured values are compared with external measured values and, based on the comparison, information is transmitted to the electronic ballast. Method according to one of the preceding claims, in which the electronic ballast provides measured values or information in that a half-bridge frequency of a half-bridge ( 105 ) of the electronic ballast is modulated. Method according to one of the preceding claims, in which an adjustment unit transmits the external signal and / or the information to the electronic ballast. Method according to one of the preceding claims, in which the electronic ballast is parameterized and / or tested. Electronic Ballast ( 101 ) for at least one lamp or at least one lamp comprising a processor unit ( 104 ) or another circuit for carrying out the method according to one of the preceding claims. Matching unit ( 102 ) for communication with an electronic ballast ( 101 ), the matching unit ( 102 ) a controller ( 115 ), which is arranged such that the method according to one of claims 1 to 15 can be carried out. Matching unit according to claim 17 for parameterization, testing and / or setting of the electronic ballast.

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