EP3058795A1 - Verfahren und vorrichtungen zur kommunikation in einem beleuchtungssystem - Google Patents
Verfahren und vorrichtungen zur kommunikation in einem beleuchtungssystemInfo
- Publication number
- EP3058795A1 EP3058795A1 EP14784478.1A EP14784478A EP3058795A1 EP 3058795 A1 EP3058795 A1 EP 3058795A1 EP 14784478 A EP14784478 A EP 14784478A EP 3058795 A1 EP3058795 A1 EP 3058795A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bus
- sensor
- operating device
- central unit
- operating state
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000006854 communication Effects 0.000 title claims description 63
- 238000004891 communication Methods 0.000 title claims description 63
- 238000000034 method Methods 0.000 title claims description 30
- 238000012545 processing Methods 0.000 claims description 58
- 238000012937 correction Methods 0.000 claims description 12
- 230000008878 coupling Effects 0.000 claims description 12
- 238000010168 coupling process Methods 0.000 claims description 12
- 238000005859 coupling reaction Methods 0.000 claims description 12
- 230000005540 biological transmission Effects 0.000 description 10
- 238000005286 illumination Methods 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 2
- 230000007175 bidirectional communication Effects 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 2
- 238000005036 potential barrier Methods 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000002618 waking effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
- H05B47/175—Controlling the light source by remote control
- H05B47/18—Controlling the light source by remote control via data-bus transmission
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
- H05B47/175—Controlling the light source by remote control
- H05B47/185—Controlling the light source by remote control via power line carrier transmission
Definitions
- the invention relates to methods and devices for Konnnnikation in lighting systems.
- the invention relates to methods and apparatuses in which a central unit, a light-emitting operating device or a plurality of light-emitting operating devices supplies a DC supply voltage, wherein communication between the central unit and a sensor of a light-emitting operating device is made possible.
- LED light emitting diode
- LED light emitting diode
- a central unit which generates and supplies a direct current (DC) supply voltage to a light source operation device or a plurality of light source operation devices via a DC bus.
- the light source operating devices are provided separately from the central unit.
- the lamp operating devices are coupled via a DC bus to the central unit.
- the central unit In a normal utility operation, in which the bulbs connected to the light bulbs emit light, the central unit generates a DC supply voltage having a voltage level on the DC bus. Communication between the central processing unit and the lamp operating devices may be via the DC bus.
- the invention has for its object to provide methods and devices, which is also a communication between the central processing unit and a component of the Illuminant devices allow when the voltage level on the DC bus is reduced.
- the invention is in particular the object of specifying such methods and devices that allow communication between a central processing unit and a sensor of a light-emitting device operating device in a standby mode, without having to use several additional lines for this purpose.
- a central unit which supplies a light-emitting operating device with energy via a DC bus, communicates with a sensor of the light-emitting operating device via a line, which is also used to supply energy to the sensor, at least in a standby mode.
- the central unit can generate at least two voltage levels on the DC bus, via which the central unit supplies the light source operating device with energy. At least when the voltage level on the DC bus is reduced, for example in a standby mode, communication between the sensor and the central unit can occur via the same line, through which the central unit still supplies the sensor with energy, while the voltage level on the DC bus is reduced.
- the line may be the DC bus or a different data line from the DC bus, which in standby mode is used both for power supply and for communication between the central unit and the sensor.
- the sensor can send sensor data to the central unit via the DC bus or the data line that is different from the DC bus.
- the central unit can send control commands to the light-weight operating device via the DC bus or the data line which is different from the DC bus. In a system, multiple such light source devices may be connected to the DC bus and communicate with the central unit.
- the devices and methods of embodiments allow to ensure power supply to the sensor by the central processing unit and communication between the sensor and the central unit even when a voltage level on the DC bus is reduced from a useful operation.
- the communication can take place via the DC bus. If a data line other than the DC bus is used for communication between the sensor and the central unit, the energy supply of the sensor are used at least in standby mode to power the sensor.
- the central unit In a method for communication between a central processing unit and a light source operating device, the central unit generates a DC supply voltage for supplying the light source operating device.
- the light bulb operating device has a sensor. Data is transmitted between the central unit and the sensor of the light source operating device via a line via which the central unit supplies the sensor of the light source operating device with energy.
- the central unit can be coupled via a DC bus with the light source operating device.
- the central processing unit may generate a voltage level on the DC bus in a first operating state and, in a second operating state, may reduce the voltage level on the DC bus from the first operating state.
- the transmitted data may include sensor data transmitted in the second operating state from the sensor to the central processing unit.
- the reduction of the voltage level on the DC bus may indicate that a standby mode is activated. At least in the standby mode, a data transmission of the sensor data from the sensor to the central unit and a power supply of the sensor can take place via the same line.
- the sensor can transmit the sensor data in the second operating state via the DC bus to the central unit.
- the DC bus between the central unit and the lamp operating device can be used both for powering the sensor in standby mode and for data communication in standby mode.
- the CPU In standby mode, the CPU can reduce the voltage level on the DC bus to be less than the voltage level during normal operation, but still provide a finite voltage on the DC bus for operation of the sensor.
- the central processing unit and the lamp operating device may be connected to a line other than the DC bus in addition to the DC bus.
- the sensor In the second operating state, for example the standby mode, the sensor can be supplied with energy via the line which is different from the DC bus from the central unit.
- the sensor data can be transmitted to the central unit via the line other than the DC bus.
- the additional cable can be designed as a single-wire bus be used, at least in the second operating state both for powering the sensor and for data transmission.
- the data transmission can be done by generating a modulated signal.
- the signal may be a high-frequency signal which may have a frequency of, for example, at least one kHz or at least one MHz.
- the coding of the data in the modulated signal can be done in different ways. Different bit values can be coded, for example, by different amplitudes, different frequencies and / or different time intervals between pulse edges of the modulated signal.
- Data may be transmitted in a frame or packet containing address information.
- the address information can be assigned to a lamp operating device or to a sensor.
- the frame or packet may include a header with the address information.
- the address information may indicate the light emitting device transmitting the data or the sensor sending the data.
- the address information may indicate for which lamp operating device a control command is intended.
- the light bulb operating device may include a modulator that generates the modulated signal to transmit the sensor data.
- the central unit may comprise a demodulator which demodulates the modulated signal.
- the second operating state may be a standby mode.
- the second operating state may be another operating mode in which a voltage level on the DC bus is reduced.
- the transmission of the data may include the transmission of a control command coded in the data, which is transmitted from the central unit to the light bulb operating device.
- the control command may be addressed to the light bulb operating device or the sensor.
- the control command can be a switch-off command for switching off the light source connected to the light source operating device.
- the central processing unit may include a power factor correction circuit.
- the central processing unit may include both a rectifier and a power factor correction circuit.
- the central unit may include a SELV (Safety Extra Low Voltage) barrier.
- the Leuchtstoff Anlagenat may be configured so that it does not include a power factor correction circuit.
- the power factor correction can be realized by the central unit for a plurality of lamp operating devices.
- the Leuchtstoff Anlagensgerat may be a SELV device.
- the central unit can be connected to several lamps operating devices, which include a sensor.
- the plurality of lamp operating devices may be connected to the DC bus.
- Each of the plurality of lamp operating devices may each be connected to an LED module.
- a central unit for the supply of illuminant devices is arranged to generate a DC supply voltage for the supply of the illuminant operating device.
- the central unit comprises a connection for supplying a sensor of a light-emitting operating device with energy.
- the central unit comprises a communication device which is coupled to the connection and which is set up to receive and / or transmit data to be transmitted between the central unit and the sensor of the light-emitting-material operating device via the connection.
- the communication device may be configured to receive sensor data from the sensor of the light bulb operation device via the port.
- the central unit can be set up to receive the sensor data via a DC bus and also to supply the sensor with energy via the DC bus when the lamp operating device is in a standby mode.
- the connection can be set up for coupling to a DC bus.
- the central processing unit may be configured to generate a voltage level on the DC bus in a first operating state and to reduce the voltage level in a second operating state compared to the first operating state.
- the communication device may be configured to receive sensor data from the sensor at the port in the second operating state.
- the central processing unit may be configured to receive the sensor data via a line other than the DC bus and, at least in standby mode, to power the sensor via the line other than the DC bus.
- the central unit may comprise a bus connection which is different from the connection and which is set up for coupling to a DC bus.
- the port through which the sensor data is received may be configured to couple with the line other than the DC bus.
- the central processing unit may be configured to, in a second operating state in which a voltage level on the DC bus is reduced, power the sensor via the line other than the DC bus.
- the line other than the DC bus may be a single-wire bus.
- the communication device may include a demodulator for demodulating a signal received at the port and / or a modulator for generating a control command.
- the control command can be addressed to a sensor or a light-emitting control device.
- the control command may be a command to turn off the bulb operation device.
- a light emitting device is configured to receive a DC supply voltage from a central processing unit and to power a light source.
- the light-emitting operating device comprises a sensor, a connection for a power supply of the sensor and a communication unit.
- the communication unit is coupled to the sensor and is configured to send and / or receive data to be transmitted between the sensor of the light-emitting-medium operating device and the central unit via the connection.
- the bulb operating device may be configured to be powered by a DC bus during normal usage, and in a standby mode, the data communication and powering of the sensor is via the DC bus.
- the connection can be set up for coupling to a DC bus.
- the illuminant device may be configured to power the illuminant in a first mode of operation when the DC bus is at a first voltage level and to power the sensor in a second mode of operation when the voltage level on the DC bus is reduced.
- the communication unit may be configured to transmit sensor data from the sensor via the port in the second operating state.
- the Leuchtstoffbetnebsgerat may be configured so that it is powered in the normal Nutz peaceful over a DC bus with energy, and that in a standby mode, the data communication and the power supply of the sensor takes place via a line that is different from the DC bus is.
- the illuminant operating device may comprise a bus connection which is different from the connection and which is set up for coupling to a DC bus.
- the connection via which at least in the standby mode the data communication and energy supply of the sensor takes place, can be set up for a coupling to a line which is different from the DC bus.
- the sensor may be configured to be powered in the second operating state via the different line from the DC bus.
- the line other than the DC bus may be a single-wire bus.
- the communication unit may include a modulator for generating a modulated signal depending on an output signal of the sensor and / or a demodulator for demodulating a modulated signal received at the terminal.
- the communication unit can be set up to generate the modulated signal such that the transmitted data comprises address information of the illuminant device and / or of the sensor.
- the sensor can be structurally integrated into a housing of the light-emitting operating device.
- the sensor can be arranged outside of a housing of the light-emitting operating device.
- a system which comprises a central processing unit according to an embodiment, at least one light source operating device according to an embodiment, at least one LED module connected to the at least one light source operating device, and a DC bus connected to the central unit and the at least one bulb operating device is connected.
- the light source operating device and the LED module may be integrally formed.
- the light-emitting operating device and the LED module can be arranged in a common housing and / or on a common carrier.
- a unit which comprises a light-emitting operating device according to an embodiment and at least one LED module, which is connected to the at least one light-emitting device operating device.
- the light-emitting operating device and the LED module can be arranged in a common housing and / or on a common carrier.
- Devices and methods according to exemplary embodiments can be used in particular for lighting systems in which the luminous means comprises a light-emitting diode (LED) or a plurality of LEDs.
- the luminous means comprises a light-emitting diode (LED) or a plurality of LEDs.
- FIG. 1 shows an illumination system with a central unit and a plurality of illuminant operating devices according to an exemplary embodiment of the invention.
- Figure 2 shows a voltage on a DC bus in methods and apparatus according to an embodiment.
- FIG. 3 is a flowchart for explaining the operation of a CPU according to an embodiment.
- FIG. 4 is a flowchart for explaining the operation of a lighting device according to an embodiment.
- FIG. 5 shows an illumination system with a central unit and a light-emitting operating device according to an exemplary embodiment of the invention.
- FIG. 6 shows a voltage on a DC bus in the illumination system of FIG. 5.
- FIG. 7 shows a potential on a single-wire bus of the illumination system of FIG. 5.
- FIG. 8 is used to further explain the configuration of the central unit and of the illuminant operating device according to one exemplary embodiment.
- FIG. 1 shows a system 1 having a central unit 10, a plurality of illuminant operating devices 20, 30 and a plurality of LED modules 4, each of which is in each case connected to a lighting device operating device 20, 30.
- the central unit 10 is set up to generate a DC supply voltage and to supply the light source operating devices 20, 30 with power via a DC bus 3.
- Elements such as a rectifier or power factor correction circuit 12, which would conventionally have to be separately provided in each of a plurality of LED converters, may be present in the central unit 10 and then no longer need to be used separately in the various illuminant devices 20, 30.
- the light source operating devices 20, 30 need not have their own power factor correction circuit and / or no input side rectifier.
- the light source operating devices 20, 30 are connected at their input 21, 31 to the DC bus 3.
- the lamp operating devices 20, 30 have the function of providing the LED current for the LED module 4 connected to its output.
- the LED module 4 can be integrated with the illuminant operating device 20, 30, for example, on a circuit board or with two interconnected boards, integrated within a common housing.
- the LED module 4 can be arranged with its associated light source operating device 20, 30 on a common carrier.
- the lamp operating devices 20, 30 may perform a control loop to adjust the LED current provided to the LED module 4.
- a light source operating device 20, 30 or several of the light source operating devices 20, 30 may each comprise a DC / DC converter 22, 32.
- the DC / DC converter 22, 32 may, for example, be a buck converter (buck converter), a flyback converter or another DC / DC converter.
- a control or regulation circuit of the light-emitting device operating device 20, 30 may switch a controllable switch of the DC / DC converter 22, 32 so that the LED current is controlled or regulated to a desired value when the system 1 is operating in use to light leave.
- the LED module 4 has in each case one light-emitting diode (LED) or a plurality of LEDs 5.
- the LEDs 5 may comprise an inorganic light emitting diode or a plurality of inorganic LEDs or one or more organic LEDs (OLEDs).
- the LEDs of the LED module 4 can be interconnected in one or more LED paths or in a two-dimensional arrangement.
- the central processing unit 10 is arranged to generate at least two different voltage levels on the DC bus 3. A first voltage level is generated when the system 1 operates in a normal operating mode in which the LEDs 5 of the LED modules 4 emit light.
- a lower second voltage level may be generated in a standby mode in which the LEDs 5 of the LED modules 4 do not emit light or in an emergency light mode in which the light output for an emergency light function is reduced.
- the central unit 10 At least in the operating state in which the voltage level on the DC bus 3 is reduced by the central unit 10, communication between the central unit 10 and a sensor 23, 33 of a Leuchtstoffbetnegersats 20, 30 and the supply of the sensor 23, 33 with energy done by the central unit 10 via the same line.
- the sensor 23, 33 of a light bulb device 20, 30 is energized via the DC bus 3.
- the voltage level on the DC bus 3 is lowered by the central unit 10 in the second operating state to a value which is greater than zero.
- the voltage level on the DC bus 3 from the central processing unit 10 in the second operating state can be reduced to an input voltage of the sensor 23, 33.
- the sensor 23, 33 can, at least in the second operating state, in which the voltage level on the DC bus 3 is reduced by the central unit 10, transmit sensor data to the central unit 10 via the DC bus 3.
- a communication unit 24, 34 which is integrated into the sensor 23, 33 or connected to the sensor 23, 33, can modulate a modulated signal, for example an AC signal, onto the DC bus 3 for this purpose. Coding of data can be done for example by the frequency, the amplitude and / or the time interval between edges of the AC signal.
- the AC signal may, for example, have a frequency of at least one kHz or at least one MHz.
- the data transmitted by the illuminant device 20, 30 to the CPU 10 may include address information that uniquely identifies the sensor whose data is being transmitted in the system 1.
- the data transmitted from the illuminant device 20, 30 to the CPU 10 may be address information contained in the system 1 uniquely identifies the Leuchtstoffbet ebs réelle from which the data is transmitted.
- the address information may, for example, be contained in a header of a data frame or data packet.
- the central unit 10 can transmit data to a light-emitting device or a plurality of light-emitting device operating devices 20, 30 via the DC bus 3.
- the data transmitted by the central unit to a light source operating device 20, 30 may include a control command.
- the control command can be, for example, a switch-off command with which one or more of the lamp operating devices 20, 30 are switched off.
- the control command may be an emergency light command with which an emergency light function for one or more of the light source operating devices 20, 30 is activated.
- the control command can be transmitted from the central unit 10 via the DC bus 3, while the central unit 10 generates a first voltage level on the DC bus 3 for a normal use, in which the LED modules 4 emit light, and / or during the Central unit 10 keeps the voltage level on the DC bus 3 in a second operating state at a lower value.
- Coding of the data transmitted by the central processing unit 10 via the DC bus 3 can be effected, for example, by the frequency, the amplitude and / or the time interval between edges of a modulated signal, such as an AC signal.
- the AC signal may, for example, have a frequency of at least one kHz or at least one MHz.
- the data transmitted from the central processing unit 10 to the bulb operating device 20, 30 may include address information uniquely identifying one or more of the bulb operating devices 20, 30 connected to the central processing unit 10.
- the address information may, for example, be contained in a header of a data frame or data packet.
- At least one of the lamp operating devices 20, 30, which are connected to the central unit 10 via the DC bus 3, has a sensor 23, 33.
- the sensor may be integrated into a housing of the light-emitting operating device, as shown for the sensor 23 of the light-emitting device operating device 20.
- the sensor can also be arranged outside a housing of the light-emitting operating device, as shown for the sensor 33 of the light-emitting device operating device 30.
- the sensor can also be releasably, in particular reversibly detachable, connected to the light source operating device.
- the light-emitting device operating device 20, 30 may have a communication unit 24, 34.
- the communication unit may be integrated in the sensor, such as this is shown for the communication unit 24 of the luminous means operating device 20.
- the communication unit may be provided separately from the sensor, as shown for the communication unit 34 of the luminous means operating device 20.
- the communication unit 24, 34 is configured to modulate an AC signal to a DC voltage on the DC bus 3.
- the communication unit 24, 34 comprise a controllable semiconductor switch which is switched at a switching frequency in order to Anlagenmodulieren the AC signal.
- a light bulb device 20, 30 may include a demodulator to demodulate modulated signals transmitted over the DC bus 3.
- the central unit 10 has a communication device 15.
- the communication device 15 is coupled to a terminal 17 of the central unit 10, which is connected in operation to the DC bus 3.
- the communication device 15 may include a demodulator to demodulate a modulated signal on the DC bus 3 to recover the sensor data transmitted from one of the sensors 23, 33.
- the demodulator may be configured to determine the sensor data and address information identifying a transmitting sensor by processing the modulated signal.
- the communication device 15 may include a modulator with which, for example, control commands can be transmitted via the DC bus 3.
- the central unit 10 may comprise a controller 16 which controls a power factor correction circuit (PFC) and / or a DC / DC converter 13 of the central unit.
- the controller 16 may control the power factor correction circuit and / or the DC / DC converter 13 depending on the sensor data transmitted via the DC bus 3.
- the controller 16 may set a parameter of a control loop depending on the sensor data transmitted via the DC bus 3 while reducing the voltage level on the DC bus 3 in the second operating state.
- the controller 16 may control a voltage level on the DC bus 3 depending on the sensor data transmitted via the DC bus 3. For example, the voltage level may be reduced to put the system 1 into standby mode if motion sensors have not signaled movement for a certain period of time.
- the voltage level can be increased to the system
- the central processing unit 10 may be configured to be at an input port
- the input terminal 1 1 can be connected to a Voltage source 2, for example, a power line to be connected.
- the central processing unit 10 may include a rectifier and / or a power factor correction circuit 12.
- the central processing unit 10 may include a DC / DC converter 13 or other converter that provides a potential barrier 14.
- the potential barrier 14 may be a SELV ("Safety Extra Low Voltage") barrier
- the port 17 of the central processing unit 10 is connected to the DC bus 3.
- the DC / DC converter 13 and / or the power factor correction circuit may be controlled so in that a desired voltage level is set for the DC bus 3 at the connection 17. In a first operating state, for example the normal utilization mode, a first, higher voltage level can be set the voltage level set by the CPU 10 on the DC bus 3 is reduced.
- the light source operating devices 20, 30 are connected to the DC bus 3 at their input connection 21, 31.
- the sensor 23, 33 is coupled to the input terminal 21, 31 of the corresponding lamp operating device 20, 30 to be energized via the input terminal 21, 31 at least in the second operating state in which the voltage level on the DC bus 3 is reduced become.
- the lamp operating devices 20, 30 may be configured such that in the first operating state, in which the voltage level on the DC bus 3 is higher, the lamp operating device 20, 30 the sensor 23, 33 via a supply circuit connected between the input terminal 21, 31 and the corresponding sensor 23, 33 is connected, supplied with energy.
- the bulb operating device 20, 30 can automatically detect how the sensor 23, 33 is to be supplied with energy, depending on the voltage level of the voltage on the DC bus 3.
- FIG. 2 schematically shows a bus voltage on the DC bus 3 in a system 1 according to an exemplary embodiment.
- the system 1 In a period 41, the system 1 is in a first operating state, for example a normal operating mode, in which the LED modules 4 emit light.
- the central unit 10 provides an output voltage so that a first voltage level V1 is present on the DC bus 3.
- the system 1 In a further period 42-45, the system 1 is in a second operating state, for example in a standby mode.
- the central processing unit 10 provides an output voltage with which the DC voltage on the DC bus 3 is set to a second voltage level V2.
- the second voltage level V2 may correspond to the supply voltage of the sensor 23, 33 of a luminous-light operating device 20, 30.
- the bus voltage 52, 54 When no data is being transmitted over the DC bus, as in the time intervals 42, 44, the bus voltage 52, 54 remains at the second voltage level V2 in the second operating state.
- An AC signal 53, 55 can be modulated onto the bus voltage.
- a communication unit 24, 34 of a light-emitting operating device 20, 30 can modulate the AC signals 53, 55.
- one of the AC signals 53, 55 can be generated by the communication device 15 of the central unit 10.
- Data may be encoded, for example, in the amplitude, frequency and / or time interval between edges of the AC signals.
- the modulated AC signals 53, 55 may include address information, such as the address information of a sensor or light emitting device operating device that transmits data to the central processing unit, or the address information of a sensor or light bulb operating device to which the central processing unit 10 transmits a control command.
- a data transmission via the DC bus 3 can also take place in the first operating state, in which the central unit 10 provides an output voltage with which the first voltage level V1 is generated on the DC bus 3.
- FIG. 3 is a flow chart of a method 60 that may be performed automatically by a central processing unit according to an embodiment.
- the method 60 may be performed by the central processing unit 10 of the system of FIG. 1 or by the central processing unit 80 of the system of FIG.
- the CPU 10 generates a DC supply voltage having a first voltage level provided on the DC bus 3 for operation of the light source.
- One or more light source operating devices can each supply an LED module 4 assigned to them with an LED current, so that the LED module 4 emits light.
- a second operating state for example a standby mode, should be activated. If normal usage is to continue, the process returns to step 61. If the second operating state is maintained, the process proceeds to step 63.
- the CPU 10 decreases the voltage level on the DC bus 3. An output voltage of the CPU 10 can be reduced so that the voltage level on the DC bus is reduced to a supply voltage of the sensor 23, 33 of a light source device 20, 30.
- step 64 communication takes place between the sensor 23, 33 of a lamp operating device 20, 30 and the central unit 10 via the line via which the sensor 23, 33 is supplied with energy in the second operating state.
- This may be the DC bus 3, as described for the system of Figure 1 and Figure 2, or a single-wire bus as will be described for the system of Figure 5 to Figure 7.
- the communication between the sensor 23, 33 and the central unit 10 via the supply line can be carried out at least until the second operating state is terminated.
- FIG. 4 is a flowchart of a method 70 that may be automatically performed by a lighting device according to one embodiment.
- the method 70 may be performed by the bulb operating device 20, 30 of the system of FIG. 1 or by the bulb operating device 81 of the system of FIG.
- the lamp operating device receives a DC supply voltage having a first voltage level at the input terminal connected to the DC bus 3.
- the bulb operating device generates an LED current that is provided to the LED module so that the LED module emits light.
- a sensor of the lamp operating device can be supplied with energy, for example via a supply circuit connected between the input terminal and the sensor.
- the supply circuit may provide a voltage to the sensor that is less than the voltage applied to the input terminal of the lamp operating device.
- a check is made as to whether there is a reduced voltage level across the DC bus from the first voltage level.
- the reduced voltage level indicates that a second operating condition, such as a standby mode or an emergency lighting operation, is to be activated. If no reduced voltage level is detected on the DC bus, the process returns to step 71. If a reduced voltage level is detected on the DC bus, the process continues to step 73.
- the lamp operating device activates a second operating state, for example a standby mode.
- the sensor 23, 33 can be electrically conductively connected to the input terminal of the light-emitting operating device in order to be supplied with energy by the central unit 10 via the DC bus 3.
- a setpoint of the LED current can be lowered to zero and the control of a DC / DC converter 22, 32 are adjusted accordingly.
- step 74 communication takes place between the sensor of the illuminant operating device and the central unit 10 via the line via which the sensor is supplied with energy in the second operating state.
- This may be the DC bus 3, as described for the system of Figure 1 and Figure 2, or a single-wire bus as will be described for the system of Figure 5 to Figure 7.
- the communication between the sensor 23, 33 and the central unit 10 via the supply line can be carried out at least until the second operating state is terminated.
- FIG. 5 shows a system 1 according to a further exemplary embodiment, which comprises a central unit 80 and a luminous means operating device 81.
- a plurality of such light source operating devices 81 may be connected to a DC bus 3.
- at least one light-emitting device operating device 20, 30, as described with reference to FIG. 1, may also be connected to the DC bus 3.
- the power supply of the sensor and the data communication between the central processing unit 80 and the sensor 23 are via a single-wire bus 85, which is from the DC bus 3 is different.
- the central unit 80 has a port 84 which is connected to the single-wire bus 85.
- the bulb operating device 81 has a terminal 86 connected to the single-wire bus 85.
- a current supply of the sensor 23 of the light-emitting device operating device 81 can take place via the single-wire bus 85.
- a unidirectional or bidirectional data transmission between the sensor 23 and the central unit 80 via the single-wire bus 85 take place.
- a communication unit 24 of the lighting device operating device 81 may be configured to change a potential between the single-wire bus 85 relative to a reference potential PO so that a modulated AC signal is generated.
- the central unit 80 has a bus connection 82 for connection to the DC bus 3.
- the light source operating device 81 has a bus connection 83 for connection to the DC bus 3.
- the CPU 80 may set a first voltage level on the DC bus 3.
- the central processing unit 80 may reduce the voltage level on the DC bus 3 from the first operating state.
- the power supply of the sensor 23 can be made either via the DC bus 3 or via the single-wire bus 85.
- the voltage on the DC bus can be lowered to zero.
- the current supply of the sensor 23 takes place via the single-wire bus 85.
- the transmission of data comprising control commands from the central unit 80 to the illuminant operating device 81 can likewise be effected via the single-wire bus 85.
- Figure 6 shows the voltage on the DC bus in the system 1 of Figure 5.
- the system 1 is in a first operating state, e.g. a normal operating mode in which the LED modules 4 emit light.
- the central unit 80 provides an output voltage at the bus terminal 82 so that a first voltage level V1 is present on the DC bus 3.
- the system 1 is in a second operating state, e.g. in a standby mode.
- the DC bus 3 can be switched off in the second operating state.
- the voltage level can be reduced to a voltage of 0V.
- FIG. 7 shows the potential difference Vdata between the potential on the single-wire bus 85 and a reference potential PO.
- modulated signals such as modulated voltage signals
- the voltage between the potential on the single-wire bus 85 and the reference potential PO may comprise a modulated signal, for example a modulated AC signal 93, 95.
- the AC signal 93, 95 may be generated by a communication unit 24 of the lighting device 81 on the single-wire bus 85. If no data packet or data frame is transmitted, the potential 92, 94 on the single-wire bus 85 can be kept constant.
- the modulated AC signals 93, 95 may include address information, such as the address information of a sensor or light emitting device operating device that transmits data to the central processing unit, or the address information of a sensor or light emitting device to which the central processing unit 10 transmits a control command.
- the central unit may comprise a demodulator and / or a modulator.
- the Leuchtstoffbetnebsgerat may comprise a modulator and / or a demodulator.
- FIG. 8 schematically shows the components of a central processing unit 100 and of a lighting device operating device 110 for data transmission in a system according to an exemplary embodiment.
- the central processing unit 100 may be configured as the central processing unit 10 of the system of FIG. 1 or as the central processing unit 80 of the system of FIG.
- the Leuchtstoffbetnebsegerat 1 10 may be configured as the Leuchtstoff ists réelle 20, 30 of the system of Figure 1 or as the Leuchtstoff GmbH 81 of the system of Figure 5.
- the central unit 100 and the light source operating device 1 10 are connected via a line 120, via which, at least in the second operating state, a sensor of the light-emitting operating device 110 is supplied with energy by the central unit 100.
- the line 120 may be a DC bus 3 or a single-wire bus 85.
- a communication device 102 of the central processing unit 100 may include a demodulator 103.
- a communication unit 1 12 of the light source operating device 1 10 may have a modulator 1 14.
- the modulator 1 14 of the lighting device operating device 1 10 can modulate an AC signal onto the line 120.
- the modulated signal can be transmitted via the line 120 via a corresponding connection 11 1, via which the sensor of the light-emitting operating device 10 is supplied with energy at least in the second operating state.
- the central processing unit may receive the modulated signal at a port 101.
- the demodulator 103 may determine the transmitted data by processing the modulated signal.
- the transmitted data may include sensor data that depends on a quantity detected by the sensor, and optionally also address information that uniquely identifies the sensor or the lamp operating device 110.
- the communication device 102 of the central processing unit 100 may include a modulator 104.
- the communication unit 1 12 of the light-emitting operating device 1 10 may have a demodulator 1 13.
- the modulator 104 may generate a modulated signal that is transmitted over the line 120.
- the modulated signal may vary depending on an ad- Ressinformation the receiving bulb operating device 1 10 are generated.
- the modulated signal can be generated so that the transmitted data contains a control command.
- the demodulator 1 13 of the lighting device operating device 1 10 can determine the transmitted data by processing the modulated signal.
- a light source operating device or a plurality of light bulbs operating devices whose sensor communicates with the central unit via the DC bus can be combined with one or more light source operating devices whose sensor is in standby mode communicates a single wire bus other than the DC bus with the central unit (as described with reference to Figure 5 to Figure 7).
- At least one of the light source operating devices may include two or more sensors that are powered by the central unit at least in standby mode via the same line and that transmit sensor data to the central unit.
- the central unit can also supply one or more illuminant operating devices via the DC bus which have no sensor and / or which do not transmit sensor data to the central unit via the supply line.
- lamp operating devices according to embodiments that communicate with the central unit via at least one standby mode via a supply line for the sensor can be combined with lamp operating devices which have no sensor and / or which are not for communication between the lamp operating device and the central unit a supply line are set up.
- a communication of a sensor via the supply line, with which the sensor is supplied with energy in standby mode, can be done not only as a communication to a central unit, but also between lamp operating devices.
- Devices and methods according to exemplary embodiments can be used in particular for the operation of light-emitting devices which comprise LEDs, without being limited thereto.
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201310220965 DE102013220965A1 (de) | 2013-10-16 | 2013-10-16 | Verfahren und Vorrichtungen zur Kommunikation in einem Beleuchtungssystem |
PCT/EP2014/072202 WO2015055759A1 (de) | 2013-10-16 | 2014-10-16 | Verfahren und vorrichtungen zur kommunikation in einem beleuchtungssystem |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3058795A1 true EP3058795A1 (de) | 2016-08-24 |
EP3058795B1 EP3058795B1 (de) | 2020-03-25 |
Family
ID=51730523
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14784478.1A Active EP3058795B1 (de) | 2013-10-16 | 2014-10-16 | Verfahren und vorrichtungen zur kommunikation in einem beleuchtungssystem |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3058795B1 (de) |
DE (1) | DE102013220965A1 (de) |
WO (1) | WO2015055759A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016119409A1 (de) * | 2016-10-12 | 2018-04-12 | Technische Universität Dortmund | Kommunikationssystem |
AT15929U1 (de) * | 2017-04-21 | 2018-09-15 | Tridonic Gmbh & Co Kg | Beleuchtungssystem mit Signalgeneratoren |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004002018A1 (de) * | 2004-01-14 | 2005-08-04 | Tridonicatco Gmbh & Co. Kg | DC-versorgte Betriebsmittel-Module für Leuchtmittel |
DE102010031230A1 (de) * | 2010-03-19 | 2011-09-22 | Tridonic Ag | Modulares LED-Beleuchtungssystem mit internem Bus |
-
2013
- 2013-10-16 DE DE201310220965 patent/DE102013220965A1/de not_active Withdrawn
-
2014
- 2014-10-16 WO PCT/EP2014/072202 patent/WO2015055759A1/de active Application Filing
- 2014-10-16 EP EP14784478.1A patent/EP3058795B1/de active Active
Also Published As
Publication number | Publication date |
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WO2015055759A1 (de) | 2015-04-23 |
DE102013220965A1 (de) | 2015-04-16 |
EP3058795B1 (de) | 2020-03-25 |
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