WO2021185780A1

WO2021185780A1 - Illumination device

Info

Publication number: WO2021185780A1
Application number: PCT/EP2021/056564
Authority: WO
Inventors: Norbert Wittschief; Damian GARBACIOK
Original assignee: Atlas Elektronik Gmbh; Thyssenkrupp Ag
Priority date: 2020-03-20
Filing date: 2021-03-15
Publication date: 2021-09-23
Also published as: DE102020203612A1; DE102020203612B4

Abstract

The invention relates to an illumination device comprising at least one luminaire. The luminaire has a first and a second current driver as well as a control unit. The illumination device also comprises at least one first and one second slow high-voltage line (LHV lines), wherein the first line is connected to the first current driver and the second line is connected to the second current driver, and wherein both lines each have a predefined voltage to ground. A first switch and a second switch are connected to the first line or the second line. The first and the second switch are designed to change a respective predefined voltage of the connected line to ground. In particular, the change takes place to a further predefined voltage to ground. The control unit is programmed in such a way that it executes a first action with a changing of the voltage of the first line, in particular switching on the luminaire, and executes a second action with a changing of the voltage of the second line, which differs from the first action, in particular switching off the luminaire.

Description

Lighting device

description

The invention relates to a lighting device that is switched by means of at least two slow high-voltage lines (LHV lines).

Previous lighting systems, especially on submarines, work with a CAN bus (Controller Area Network). Here, the wiring is only possible in a star configuration, the ballasts need to be addressed and the lights of the system are configured by the manufacturer. Furthermore, cables must be laid between the rooms for redundancy.

Other lighting devices use a digital, addressable lighting interface (DALI: digital addressable lighting interface). Only one current driver for the control line per circuit is possible here. Furthermore, there is no way to control two different lights (different light colors) at the same time. At least different addresses, if not a second bus, are necessary. The switch or dimmer must have intelligence. Furthermore, it is necessary that the voltage drop on the control line is a maximum of 2V and a conductor cross-section of the control line is 0.75 to 1.5mm ² and is therefore relatively thick. Furthermore, it is not possible to implement a ring architecture with DALI, ie to wire the lights and switches in a ring.

The object of the present invention is therefore to create an improved concept for lighting devices.

The object is achieved by the subject matter of the independent claim.

Exemplary embodiments show a lighting device comprising at least one lamp. The lamp has a first and a second current driver and a control unit, for example a microprocessor. The lighting device further comprises at least a first and a second Slow high-voltage line (LHV lines), where the first LHV line is connected to the first current driver and the second LHV line is connected to the second current driver, and both LHV lines each have a predefined voltage with respect to ground. A first switch and a second switch are connected to the first LHV line and the second LHV line, respectively. The first and the second switch are designed to change the predefined voltage of the connected line with respect to ground. In particular, the change takes place on a further predefined voltage with respect to ground. The switches can be latching or resilient, ie designed as buttons. However, buttons are preferably used in order to be able to display the various switching times of the switches described in the exemplary embodiments below more intuitively for the user.

The control unit is programmed to carry out a first action when the voltage of the first LHV line changes with respect to ground, in particular to switch on the light and when the voltage of the second LHV line changes with respect to ground, it executes a second action that differs from the first Action is different, in particular turning off the light. In other words, as a result of the voltage drop on the lines, the control unit registers an actuation, in particular a duration of actuation, of the switch and carries out the corresponding actions of the lamp.

In this disclosure, reference is made to the fact that the voltage on the LHV lines changes or remains constant. For this consideration, voltage ranges can be defined in which the voltage level of an LHV line is high (logical 1) or low (logical 0). The voltage areas can border one another, but do not have to be. For example, a voltage> 50V or> 70V can be viewed as high while a voltage <50V or <70V is accordingly viewed as low. A threshold value of, for example, 50V or 70V can therefore be defined. If the voltage remains above the threshold value, the voltage is constant, even if the voltage changes from 80V to 90V, for example. However, if the voltage falls below the threshold value, the voltage changes. Furthermore, in exemplary embodiments, reference is made to the fact that the voltage is for a certain period of time changes. The duration here denotes the time (in seconds) that lies between falling below and subsequently exceeding the threshold value. In other words, the length of time refers to the time that the switch is operated. In yet other words, the control unit, in this as well as in the following exemplary embodiments, in which the duration of the actuation of the switch is determined, is designed to distinguish between a short actuation (buttons) and a long actuation (hold).

This means that significantly higher voltages can be processed on an LHV line than on a bus system. For example, the possible operating voltage on the LHV line is at least 50V, preferably more than 70V, particularly preferably more than 100V or more than 130V. Furthermore, it is not necessary for the LHV line to be able to reproduce steep edges. For example, DALI can be operated at 1.2 kHz to 2.4 kHz. The CAN bus is operated at even higher frequencies. With the LHV line, the number of edges is limited to the number of switching operations that a user can carry out with one switch. This number is more in the double-digit Hertz range than in the kilohertz range. And then this is to be seen more as a gimmick than a serious use. This has enormous advantages in terms of electromagnetic compatibility. In this way, on the one hand, the electromagnetic radiation is reduced and the electromagnetic susceptibility to external fields is reduced. This is particularly relevant on submarines, where a lot of technology is installed in a confined space, which must also be fail-safe.

A cable with twisted pair can be used as the LHV line. Here a wire can represent a line. However, other cables can also be used. The cross-section of the cable can be smaller than that of a bus line that uses a cable with twisted pairs.

A lamp can have a light source or a plurality of light sources. In exemplary embodiments in which a color or color temperature of the lamp can be changed, this can be achieved by changing the color or color temperature of individual illuminants. Alternatively, lighting means of the plurality of lighting means can have different colors or color temperatures have, so that it is possible to switch between the illuminants in order to generate the different colors or color temperatures. A combination of different illuminants can also be used for this purpose in order to create a corresponding overall impression.

In exemplary embodiments, the control unit is programmed to carry out the first action if the change in the voltage of the first line occurs for a period of time which lies within a first time interval and to carry out a third action if the change in the voltage of the first line occurs for a period of time that lies within a third time interval. The first time interval includes, for example, a brief actuation of the switch, for example for less than a second. The third time interval includes, for example, a longer actuation of the switch, for example for more than a second. The third action can include dimming the luminaire. In particular, the dimming can include increasing a light output of the luminaire, provided that the light output is below a maximum light output of the luminaire. The dimming can also take place from the point in time at which the third time interval begins, for example from one second, and continue until the switch is no longer actuated, i.e. the first line carries its original voltage.

In further exemplary embodiments, the control unit is programmed to carry out the second action if the change in the voltage of the second line occurs for a period of time which is within a second time interval and to carry out a fourth action if the change in the voltage of the second line occurs for a period of time takes place, which lies within a fourth time interval. The fourth action can include dimming the luminaire. In particular, the dimming can include reducing a light output of the luminaire, provided that the light output is above a minimum light output of the luminaire. The dimming can also take place from the point in time at which the fourth time interval begins, for example from one second, and can continue until the switch is no longer actuated, ie the first line carries its original voltage. The minimum light output may include a low light output or no light output (ie the lamp is switched off). The first and the second time interval are preferably identical. The third and fourth time intervals are preferably identical.

In one embodiment, the control unit is programmed to carry out the first action or the third action (depending on the duration of the actuation of the first switch, see the above-described embodiment) when the voltage of the second line remains constant and to carry out a fifth action when the voltage of the second line also changes. Alternatively, the control unit is designed to carry out the second action or the fourth action if the voltage of the first line remains constant and to carry out a sixth action if the voltage of the first line also changes. In other words, the first and the second switch are operated here (quasi) simultaneously or in quick succession. A time offset when the two switches are actuated should therefore be within the first or third time interval, for example less than 1s or preferably less than 0.5s or particularly preferably less than 0.2s, so that the control unit operates both switches at the same time pressed registered. The fifth or sixth action can include a color temperature change of the light.

For example, to trigger the fifth action, the first switch can be operated and held and then (within the first time interval) the second switch can be operated and held to start a gradual change in color temperature from warm white to cool white. The color temperature change can be carried out as long as at least one of the two switches, preferably the second switch, is actuated. The change in color temperature can switch back to warm white light or stop when a maximum value of the cold white light is reached. To trigger the sixth action, for example, the second switch can be actuated and held and then (within the third time interval) the first switch can be actuated and held in order to start a gradual change in color temperature from cold white to warm white. The color temperature change can be carried out as long as at least one of the two switches, preferably the first switch, is actuated. The change in color temperature can change back to cool white light or stop when a maximum value of warm white light is reached. Exemplary embodiments show the lamp with a third current driver. The lighting device has a third LHV line, the third line being connected to the third current driver and the third line having a predefined voltage with respect to ground. The lighting device also has a third switch which is connected to the third line, the third switch being designed to change the predefined voltage of the connected third line with respect to ground. The third switch is designed, for example, as a (latching) switch and not as a button. So two different scenarios (switch operated or not operated) can be permanently selected. That means, for example, it is possible to select two different lighting scenarios (permanent). The control unit is programmed to carry out a seventh action when the voltage of the third line changes (ie the third switch is actuated). The seventh action can include changing the light color of the luminaire. When the button is pressed, you can switch from white light to colored light (eg red or green). If the switch is no longer operated, the light changes back to white.

According to further exemplary embodiments, the control unit is programmed to carry out an eighth action when the change in the voltage of the third line occurs and the voltage of the first line also changes. For example, the change in the voltage of the first line can take place for a period of time which lies within the third time interval while the third switch is actuated. Then the eighth action can include dimming the lamp with colored light (analogous to the third action). Furthermore, the change in the voltage of the first line can take place for a period of time which lies within the first time interval while the third switch is actuated. Then the eighth action can include switching on the light (when the light is off) with colored light (analogous to the first action).

In further exemplary embodiments, the control unit is programmed to carry out a ninth action when the voltage of the third line changes and the voltage of the second line also changes. For example, the change in the voltage of the second line can take place for a period of time which lies within the fourth time interval while the third switch is actuated. Then the ninth action can include dimming the lamp with colored light (analogous to the third action). Furthermore, the change in the voltage of the second line can take place for a period of time which lies within the second time interval while the third switch is actuated. Then the ninth action can include switching off the light (when the light is on) with colored light (analogous to the second action).

A tenth and eleventh action is also possible. When the third switch is actuated, the first and second switches can be actuated for a long period of time which is within a fifth time interval. The fifth time interval is preferably longer than the second and fourth time intervals and is, for example, more than 10s, more than 30s or more than 50s. So you can switch between different colors of the lamp. The change can take place cyclically or, if only two colors are available, the corresponding light color of the lamp can be selected depending on the operating sequence of the first and second switch.

In other words, the third LHV line can be connected to the third current driver with the third switch, if this is available and an extended functionality is required. The control unit is then designed, for example, to dim the lamp (step by step) when the predefined voltage of the third LHV line changes or to change a color temperature of the lamp (step by step). This can represent an alternative function assignment to the aforementioned examples. For example, the third LHV line is then designed as a button. Furthermore, the assignment can be made as desired and is not limited to the examples mentioned. However, when assigning the buttons, the user should take into account an intuitive operating option.

The idea is to do without an expensive and error-prone bus system and to control the lights using simple cables. There is an introduction and an exit per circle. Several switches and several lights can be switched in parallel per circuit. Regardless of the number of switches or lights per circuit, the switches can switch the lights without requiring any additional hardware or software (in addition to the current driver). That also means that none further configuration of the lighting system, for example addressing, is necessary. Accordingly, the lamp and the switches have the absence of addressing. Furthermore, the system has the absence of a protocol that is used to be able to exchange information in the form of a message between the switch and the lamp. In particular, the switching on and off of the lamp or the dimming of the lamp are referred to as information.

Furthermore, both lines can be switched and evaluated independently of one another. There is no rapid succession of signals, which would make the system more error-prone and therefore require further mechanisms, for example for error correction of the bus signals.

The use of an LHV line compared to a bus system therefore has various advantages: Any topology is possible in the system. LHV is less disruptive because the lines are not clocked. As a result, the LHV lines have a better EMC (electromagnetic compatibility) behavior. Due to the high control voltage, the system has a higher immunity to interference. Furthermore, no additional control unit is required for activation. The LHV system (i.e. the lighting system) is easy to put into operation without having to specifically address switches and lights.

The aforementioned solution has the advantage that significantly less wiring is required, since star, ring,

Line or tree structures can be implemented. The construction is very simple and robust and can be checked with a simple tension meter. For example, no addressing and / or configuration is necessary, as is the case with a bus system. Switches work without intelligence and without supply voltage and can therefore be changed just as easily as the lights themselves. Furthermore, the voltage drop on the control lines can be large, for example 20V or more, since the voltage ranges in which the control unit detects a logical 1 or a logical 0 are also large. The cross section of the control lines (LHV lines) can thus be small, for example less than or equal to 0.5 mm ² , preferably less than or equal to 0.4 mm ² . Conventional bus systems cannot be operated with such thin cables because of the voltage drop at the low operating voltages on the lines is so large that the differences between logic 1 and logic 0 can no longer be reliably detected.

Furthermore, the voltage of the control line itself can be high, for example 100V or more, preferably 120V or more, or particularly preferably 140V or more. The switches can have a series resistance, especially at high voltages, in order to reduce the peak current. The lighting device is also safe against interference because measuring filters can be designed below 10 Hz. Since the lighting device is designed so simply, it can be set up twice per room in order to create full redundancy per room.

Preferred exemplary embodiments of the present invention are explained below with reference to the accompanying drawings. Show it:

1: a schematic block diagram of the lighting device in a first exemplary embodiment; and

2: a schematic block diagram of the lighting device in a second exemplary embodiment.

Before exemplary embodiments of the present invention are explained in more detail below with reference to the drawings, it is pointed out that identical, functionally identical or identically acting elements, objects and / or structures in the different figures are provided with the same reference numerals, so that those shown in different exemplary embodiments Description of these elements is interchangeable or can be applied to one another.

1 shows a schematic illustration of a lighting device 20. The lighting device 20 comprises a first lamp 22a and a second lamp 22b. The lights 22 each have a current driver 24a, 24b or 24a ', 24b'. The first current drivers 24a, 24a 'are connected to a first LHV line 26a and the second current drivers 24b, 24b' are connected to a second LHV line 26b. Two switches 28a, 28a 'are connected to the first LHV line 26a and two switches 28b, 28b 'are connected to the second LHV line 26b. The connected LHV line is raised to a predefined voltage with respect to ground by means of the current driver. When the connected switch is closed, the corresponding voltage then drops. A control unit 30a, 30b is connected to the LHV lines 26a, 26b and monitors the voltage applied to ground. If the voltage drops, for example below 70V, the control unit can carry out a predetermined action. For example, the corresponding lamp is switched on when one of the first switches 28a, 28a 'is actuated and switched off when one of the second switches 28b, 28b' is actuated. Furthermore, the lamp can be dimmed while holding the switch. Key combinations or a third button (see Fig. 2) can change the color.

FIG. 2 shows a schematic illustration of the lighting device 20 in a further exemplary embodiment. The further exemplary embodiment shown supplements the exemplary embodiment from FIG. 1 by the features described.

The lighting device has a further (third) LHV line 26c.

This is also known as the LHV-Plus line. Another switch 28c is connected via this line 26c to a third current driver 24c, 24c ‘per lamp.

The voltage on the further line 26c is in turn monitored by the control unit 30a, 30b. If the switch 28c is now actuated and kept pressed, the control unit can, for example, dim the lamp 22a, 22b in accordance with its programming. If one of the on / off switches is pressed at the same time, the color temperature of the lamp can be changed.

Furthermore, with a different programming of the control unit, another light scenario is possible, for example the red light 32a (or another color, e.g. green) can be switched on, but the white lights 32b with e.g. 3000 Kelvin or 32c with e.g. 5000 Kelvin can be switched off . Dimming can then be carried out by holding the first or second switch (28a, 28a ') for a longer period (in the second or fourth time range)

The lights can be recognized by connecting a corresponding (third) switch 28c with voltage limitation, for example by means of a Zener diode 34, that she participates in this light scenario. For example, 140V can be present on the LHV-Plus line 26c; by means of the voltage limitation, this can drop to 100 to 130V, then the luminaire recognizes that it is participating in the light scenario. When the switch 28c is switched, the voltage drops, for example to a value less than 50V, so that the control unit recognizes the switching state as “switch closed” and executes the programmed function. No further configuration or programming is necessary besides programming the control unit in the luminaire. Thus, if a third switch 28c is not connected, the corresponding input of the control unit can be switched off. This reduces the risk of unauthorized access to the control unit.

Although some aspects have been described in connection with a device, it goes without saying that these aspects also represent a description of the corresponding method, so that a block or a component of a device is also to be understood as a corresponding method step or as a feature of a method step. Analogously to this, aspects that have been described in connection with or as a method step also represent a description of a corresponding block or details or features of a corresponding device.

The above-described embodiments are merely illustrative of the principles of the present invention. It is to be understood that modifications and variations of the arrangements and details described herein will become apparent to those skilled in the art. It is therefore intended that the invention be limited only by the scope of protection of the following patent claims and not by the specific details presented herein with reference to the description and the explanation of the exemplary embodiments. List of reference symbols:

20 lighting device 22 lamp 24 current driver

26 LHV line 28 Switch 30 Control unit 32 Light 34 Zener diode

Claims

1. A lighting device comprising at least one lamp, the lamp having a first and a second current driver and a control unit; at least one first and one second slow high-voltage line (LHV lines), the first line being connected to the first current driver and the second line being connected to the second current driver, and both lines each having a predefined voltage with respect to ground; at least one first switch and one second switch, wherein the first switch is connected to the first line and the second switch is connected to the second line, wherein the first and the second switch are each designed to change the predefined voltage of the connected line with respect to ground ; wherein the control unit is programmed to perform a first action when the voltage of the first line changes, in particular to switch on the light and, when the voltage of the second line changes, to perform a second action that differs from the first action, in particular to switch off the light .

2. Lighting device according to claim 1, wherein the control unit is programmed to carry out the first action when the change in the voltage of the first line occurs for a period of time which is within a first time interval and to carry out a third action when the change in the voltage of the first line takes place for a period of time that lies within a third time interval, in particular wherein the third action includes dimming the lamp.

3. Lighting device according to one of the preceding claims, wherein the control unit is programmed to carry out the second action if the change in the voltage of the second line occurs for a period of time which is within a second time interval and to carry out a fourth action if the change in the voltage of the second line occurs for a period of time which lies within a fourth time interval, in particular wherein the fourth action comprises dimming the lamp.

4. Lighting device according to one of the preceding claims, wherein the control unit is programmed to carry out the first action or a third action if the voltage of the second line remains constant and to carry out a fifth action if the voltage of the second line also changes. or to carry out the second action or a fourth action if the voltage of the first line remains constant and to carry out a sixth action if the voltage of the first line also changes.

5. Lighting device according to one of the preceding claims, wherein the lamp has a third current driver; wherein the lighting device has a third LHV line, wherein the third line is connected to the third current driver and wherein the third line has a predefined voltage with respect to ground; wherein the lighting device has a third switch which is connected to the third line, the third switch being formed which to change the predefined voltage of the connected third line with respect to ground; wherein the control unit is programmed to carry out a seventh action when the voltage of the third line changes, in particular to change a color temperature or a color of the lamp.

6. Lighting device according to one of the preceding claims, wherein the control unit is programmed to carry out an eighth action when the change in the voltage of the third line occurs and the voltage of the first line also changes.

7. Lighting device according to one of the preceding claims, wherein the control unit is programmed to carry out a ninth action when the change in the voltage of the third line occurs and the voltage of the second line also changes.

8. Lighting device according to one of the preceding claims, wherein the first line and / or the second line have a cross section of less than or equal to 0.5mm ² , preferably less than or equal to 0.4mm ² .

9. Lighting device according to one of the preceding claims, wherein a maximum voltage with respect to ground is at least 100V.

10. Lighting device according to one of the preceding claims, wherein the lamp and the switches have the absence of addressing.