KR20230139360A - Constant current lighting control system capable of shutting off standby power and dali ballast - Google Patents

Abstract

The present invention relates to a lighting control system, comprising: a building management server that transmits control signals to controlled devices in a building; In response to receiving a control signal from the building management server, a control panel transmitting a DALI (Digital Addressable Lighting Interface) protocol signal for controlling lighting to the DALI ballast through a DALI communication line; It is electrically connected to at least one LED (light emitting diode) lighting, and in response to receiving the DALI protocol signal from the control panel, supplies power to an LED lighting corresponding to the received DALI protocol signal among the at least one LED lighting. The DALI stabilizer supplies; And at least one LED light that receives power from the DALI ballast and emits light, wherein the DALI ballast receives power at a first voltage level from a power source and converts it into power at a second voltage level for emitting light. converter; and a control circuit that controls on/off the supply of the power input to the converter between the input line through which power of the first voltage level is received from the power source and the converter, wherein the control circuit is configured to control the supply of the power to the converter from the control panel. It is characterized by on/off control based on the received DALI protocol signal.

Description

Constant current lighting control system and DALI ballast capable of blocking standby power {CONSTANT CURRENT LIGHTING CONTROL SYSTEM CAPABLE OF SHUTTING OFF STANDBY POWER AND DALI BALLAST}

The present invention relates to a lighting control system, and to a constant current lighting control system capable of blocking standby power and a DALI stabilizer that can control lighting by the DALI (Digital Addressable Lighting Interface) protocol.

In order for users to conveniently digitally control various types of lighting used in various buildings such as residential houses and commercial buildings, various lighting has recently been controlled using the DALI (Digital Addressable Lighting Interface) protocol.

To control various types of lighting using the DALI (Digital Addressable Lighting Interface) protocol, a DALI ballast can be installed in the LED module. The DALI stabilizer interprets the DALI protocol signal and performs the function of controlling LED lighting appropriate for the address. In addition, the DALI stabilizer has a built-in DC/DC converter to convert supplied direct current power (e.g., DC 380V) into a voltage (e.g., 32.5V) to supply to LED lighting, or has a built-in AC/DC converter The supplied alternating current power (e.g., AC 220V) can be converted into a voltage for supplying to LED lighting.

In order to control lighting by the DALI protocol in the DALI ballast, power must be supplied at all times to a constant current converter (eg, DC/DC converter or AC/DC converter) included in the DALI ballast. For example, the converter included in the DALI stabilizer must be able to maintain communication status at all times to control LED lighting by the DALI protocol. For this purpose, constant power of a certain power (for example, about 0.2W) must be supplied to the inside of the converter included in the DALI stabilizer.

In this case, even when the LED light connected to the DALI stabilizer is turned off, a certain amount of constant power (about 0.2W) is maintained inside the constant current DALI converter, and the standby power, which is the constant power, is consumed unnecessarily. It is becoming. For example, when controlling 1,000 LED lights with a constant current DALI DC/DC converter, 200W of standby power can be consumed, and when 10,000 LED lights are used, 2,000W of standby power can be consumed.

Therefore, there is an urgent need for a method to reduce standby power consumed by the converter included in the DALI stabilizer.

Therefore, the object of the present invention is to provide a lighting control system that controls lighting by a DALI protocol signal, a constant current lighting control system capable of blocking standby power that can reduce standby power consumed by the converter included in the DALI ballast, and a DALI ballast. In providing.

The lighting control system of the present invention for achieving the above object includes a building management server that transmits a control signal to a control target device in the building; In response to receiving a control signal from the building management server, a control panel transmitting a DALI (Digital Addressable Lighting Interface) protocol signal for controlling lighting to the DALI ballast through a DALI communication line; It is electrically connected to at least one LED (light emitting diode) lighting, and in response to receiving the DALI protocol signal from the control panel, supplies power to an LED lighting corresponding to the received DALI protocol signal among the at least one LED lighting. The DALI stabilizer supplies; And at least one LED light that receives power from the DALI ballast and emits light, wherein the DALI ballast receives power at a first voltage level from a power source and converts it into power at a second voltage level for emitting light. converter; and a control circuit that controls on/off the supply of the power input to the converter between the input line through which power of the first voltage level is received from the power source and the converter, wherein the control circuit is configured to control the supply of the power to the converter from the control panel. Based on the received DALI protocol signal, it is controlled on/off.

Preferably, if the power of the first voltage level is alternating current power, the converter is an AC/DC converter.

Preferably, if the power of the first voltage level is direct current power, the converter is a DC/DC converter.

Preferably, the control circuit controls the supply of power input to the converter to be blocked when the received DALI protocol signal corresponds to 0.

Preferably, when the received DALI protocol signal corresponds to 0, the control circuit sets the brightness value of the LED light to 0 and then controls the supply of the power input to the converter to be cut off.

Preferably, the control circuit controls the power to be input to the converter when the received DALI protocol signal corresponds to a value exceeding 0.

Preferably, when the received DALI protocol signal corresponds to a value exceeding 0, the control circuit controls the power to be input to the converter and then adjusts the brightness value of the LED light to the DALI protocol signal. Set it to the corresponding value.

Preferably, when the received DALI protocol signal exceeds 0, the DALI protocol signal corresponds to 1 to 255.

Preferably, the DALI stabilizer includes a sensor that senses a current input from the power source to the converter; and a comparison circuit that compares the current sensed from the sensor with a set reference value, wherein the control circuit is configured to input the current to the converter when the sensed current is less than the reference value according to a comparison result of the comparison circuit. Control the power supply to be cut off.

The DALI stabilizer of the present invention for achieving the above object is electrically connected to at least one LED (light emitting diode) lighting, and receives a DALI (Digital Addressable Lighting Interface) protocol signal from a control panel to control the at least one In the DALI stabilizer that supplies power to LED lighting corresponding to the received DALI protocol signal among LED lighting, a converter that receives power at a first voltage level from a power source and converts it into power at a second voltage level for emitting lighting. ; and a control circuit that controls on/off the supply of the power input to the converter between the input line through which power of the first voltage level is received from the power source and the converter, wherein the control circuit is configured to control the supply of the power to the converter from the control panel. Based on the received DALI protocol signal, it is controlled on/off.

Preferably, the control circuit controls the supply of power input to the converter to be blocked when the received DALI protocol signal corresponds to 0.

Preferably, when the received DALI protocol signal corresponds to 0, the control circuit sets the brightness value of the LED light to 0 and then controls the supply of the power input to the converter to be cut off.

Preferably, the control circuit controls the power to be input to the converter when the received DALI protocol signal corresponds to a value exceeding 0.

Preferably, when the received DALI protocol signal corresponds to a value exceeding 0, the control circuit controls the power to be input to the converter and then adjusts the brightness value of the LED light to the DALI protocol signal. Set it to the corresponding value.

Preferably, the DALI stabilizer includes a sensor that senses a current input from the power source to the converter; and a comparison circuit that compares the current sensed from the sensor with a set reference value, wherein the control circuit is configured to input the current to the converter when the sensed current is less than the reference value according to a comparison result of the comparison circuit. Control the power supply to be cut off.

According to one embodiment of the present invention, in a lighting control system that controls lighting by a DALI protocol signal, standby power consumed by the converter included in the DALI stabilizer can be reduced.

For example, in the case of a constant current DALI DC/DC converter, the standby power is about 0.2W, so when 1,000 lights are controlled by a constant current DALI DC-DC converter according to an embodiment of the present invention, the standby power is 200W, When using 10,000 DALI lights, 2,000W of standby power can be saved. In addition, when controlling lighting in a building according to an embodiment of the present invention, in many cases, about 10,000 to a maximum of 30,000 lights are installed, so standby power of 2kW to 3kW can be saved.

1 is a diagram showing a lighting control system according to an embodiment of the present invention.
Figure 2 is a block diagram showing the structure of a DALI stabilizer according to an embodiment of the present invention.
Figure 3 is a flowchart showing a lighting control method of a DALI ballast according to an embodiment of the present invention.
Figure 4 is a diagram showing the structure of a DALI stabilizer according to an embodiment of the present invention.
Figure 5 is a diagram showing a DALI lighting control system according to an embodiment of the present invention.

Hereinafter, specific details for carrying out the present invention will be described based on examples with reference to the drawings. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It should be understood that the various embodiments of the invention are different from one another but are not necessarily mutually exclusive. For example, specific shapes, structures and characteristics described herein may be implemented in one embodiment without departing from the spirit and scope of the invention. Additionally, it should be understood that the location or arrangement of individual components within each disclosed embodiment may be changed without departing from the spirit and scope of the present invention. Accordingly, the detailed description that follows is not intended to be taken in a limiting sense, and the scope of the invention is limited only by the appended claims, together with all equivalents to what those claims assert if properly described. Similar reference numbers in the drawings refer to identical or similar functions across various aspects.

Unless otherwise defined, all terms (including technical and scientific terms) used in this specification may be used with meanings that can be commonly understood by those skilled in the art to which the present invention pertains. Additionally, terms defined in commonly used dictionaries are not to be interpreted ideally or excessively unless clearly specifically defined.

Hereinafter, in order to enable those skilled in the art to easily practice the present invention, preferred embodiments of the present invention will be described in detail with reference to the attached drawings.

1 is a diagram showing a lighting control system according to an embodiment of the present invention. Referring to Figure 1, the lighting control system according to an embodiment of the present invention includes a DALI ballast 110, an LED light 120, a control target device (e.g., a blind 131, an air conditioner 132, and an electric valve 133). , an air conditioner/temperature controller 134), a control panel 140, and a building management server (BMS) 150.

According to an embodiment of the present invention, the building management server 150 includes LED lighting 120 and controls target devices in the building (e.g., blinds 131, air conditioners 132, electric valves 133, air conditioners/temperature A control signal for the regulator 134) may be generated and transmitted. The building management server 150 may include or be connected to an input device to input commands for control from an administrator. Additionally, the building management server 150 may include or be connected to a display device (eg, a monitor) to display the current status or abnormality of various control target devices.

The control panel 140 can transmit and receive data with the building management server 150 through wired or wireless communication means (eg, TCP/IP communication). For example, the control panel 140 may receive control signals that can control various control target devices from the building management server 150. The control panel 140 may generate a Digital Addressable Lighting Interface (DALI) protocol signal for controlling lighting based on the received control signal. Here, the DALI protocol signal is not only a signal for controlling lighting, but also for controlling devices other than lighting (e.g., blinds 131, air conditioners 132, electric valves 133, and air conditioners/temperature controllers 134). May contain signals. The DALI protocol signal may include address information about the control target device and may include data corresponding to a control command. For example, data corresponding to the control command may have a value of 0 to 255. When the data corresponding to the control command is data for controlling LED lighting, 0 may correspond to a value for turning off the lighting, and 1 to 255 may be a value corresponding to the brightness of the lighting.

The control panel 140 can be connected to control devices such as LED lights 120, blinds 131, air conditioners 132, electric valves 133, and air conditioners/temperature controllers 134 through a bus line. . The control panel 140 can transmit a DALI protocol signal to each controlled device through the bus line. Each control target device that receives the DALI protocol signal determines whether the address information of the specific DALI protocol signal corresponds to its own address, and if it corresponds to its address, it can be controlled according to the corresponding control command.

According to an embodiment of the present invention, the LED lighting 120 among the control target devices may be connected to the DALI ballast 110 to stably provide power supplied to the LED lighting 120. The function of the DALI stabilizer 110 will be described in more detail with reference to FIG. 2.

Figure 2 is a block diagram showing the structure of a DALI stabilizer according to an embodiment of the present invention. Referring to Figure 2, the DALI stabilizer 110 according to an embodiment of the present invention may include a sensor 111, a comparison circuit 112, a control circuit 113, a converter 114, and a DALI controller 115. there is. The DALI ballast 110 may be simultaneously connected to a plurality of LED lights 120, and the plurality of LED lights 120 may form one LED module.

According to one embodiment, the DALI ballast 110 is a converter 114 (e.g., a DC/DC converter or an AC/DC converter) that receives power of a first voltage level from a power source and converts it to a second voltage level for emitting lighting. can be converted into power. For example, the converter 114 converts AC of the first voltage level (e.g., AC 220V or DC 380V) received through PE (protective earth), L (live), and N (neutral) lines as shown in FIG. Power or DC power can be converted into DC power at a second voltage level (eg, 32.5V) for supplying LED lighting. The PE line may be a protective ground line, the N line may be a center line, and the L line may be a live line. According to one embodiment, the converter 114 may be a constant current type converter.

The DALI controller 115 of the DALI stabilizer 110 may receive signals according to the DALI protocol through DALI lines (eg, DA+ and DA- lines). The DALI lines (DA+ and DA- lines) can receive power from a power supply (power supply) 210. The power supply 210 may supply constant power to the L line and N line. The DALI controller 115 can confirm address information by interpreting the DALI protocol signal received through the DALI line. As a result of the above confirmation, if the DALI protocol signal is the address corresponding to the DALI protocol signal, the corresponding control command can be transmitted to the control circuit 113. The control command may include a command for turning on the LED lighting 120, a command for turning it off, and a command for controlling dimming. The DALI controller 115 may transmit control signals (E1 and E2) corresponding to each command to the control circuit 113. The control circuit 1130 may control the converter 114 to generate power at a voltage level corresponding to the control signal. According to one embodiment, the value of the control signal may include 0 to 255. The control circuit 113 controls the LED lighting 120 to be in an off state when the control signal is 0, and when the control signal is 1 to 255, the LED lighting 120 emits light with a brightness corresponding to that value. You can control it to do so.

According to one embodiment, the control circuit 113 of the DALI stabilizer 110 functions to turn on/off the connection of the constant power when providing the constant power received from the power supply 210 to the converter 114. can be performed. For example, when the control circuit 113 is controlled to be on, the constant power output from the power supply 210 may be supplied to the converter 114. On the other hand, when the control circuit 113 is controlled to be in the off state, the constant power output from the power supply 210 may not be supplied to the converter 114. The control circuit 113 may include at least one relay that can turn on/off the connection of the line by a control signal. For example, the control circuit 113 may be connected to the L line of the constant power source and control the L line of the constant power source to be short-circuited or open with the converter 114 according to the on/off control.

According to one embodiment, the control circuit 113 is configured to block the supply of constant power input to the converter 114 when the control signal of the DALI protocol received from the DALI controller 115 corresponds to 0. You can control it. For example, as shown in FIG. 2, the L line input to the control circuit 113 may be blocked from being connected to the converter 114. As the supply of constant power input to the converter 114 is cut off, unnecessary loss of standby power can be reduced.

According to one embodiment, the control circuit 113 sets the brightness value of the LED light 120 to 0 when the control signal of the DALI protocol received from the DALI controller 115 corresponds to 0. , the supply of the power input to the converter 114 can be controlled to be cut off. Even if the supply of power input to the converter 114 is cut off, power is supplied from the power supply 210 to the DALI lines (e.g., DA+ and DA- lines) connected to the DALI controller 115, so the DALI stabilizer (110) can maintain communication status at all times.

According to one embodiment, the control circuit 113 is configured to, when the control signal of the DALI protocol received from the DALI controller 115 exceeds 0, the power (e.g., L line signal) is converted to the converter 114. It can be controlled to be entered as . For example, as shown in FIG. 2, the L line input to the control circuit 113 can be controlled to be connected to the converter 114.

According to one embodiment, the control circuit 113, when the control signal of the DALI protocol received from the DALI controller 115 corresponds to a value exceeding 0 (e.g., 1 to 255), the power is turned on. After controlling the input to the converter 114, the brightness value of the LED light 120 can be set to a value corresponding to the DALI protocol signal.

According to another embodiment, the control circuit 113, when the control signal of the DALI protocol received from the DALI controller 115 corresponds to a value exceeding 0 (e.g., 1 to 255), the power is It is controlled to be input to the converter 114, and the converter 114 can receive a control signal of the DALI protocol from the DALI controller 115. The converter 114 converts the power received through the control circuit 113 into a corresponding voltage based on the voltage level corresponding to the control signal of the DALI protocol received from the DALI controller 115, and converts the converted power into a corresponding voltage. It can be output to the LED module 120.

According to one embodiment, the sensor 111 of the DALI stabilizer 110 may sense current or power input from the power source to the converter 114. For example, the sensor 111 may be connected to the L line and/or the N line to sense current or power flowing through the L line and/or the N line. The comparison circuit 112 may compare the current or power sensed through the sensor 111 with a reference current value (eg, Ith) or a reference power value. According to another embodiment, the comparison circuit 112 may compare the current sensed through the sensor 111 or the power consumption calculated from the sensed current with a reference current value or a reference power value. The reference value may correspond to standby current or standby power. The comparison circuit 112 may include at least one comparator, and outputs '1' if the sensed current or power is greater than the reference value as a result of the comparison, and outputs '0' if it is less than the reference value. The comparison result of the comparison circuit 112 may be transmitted to the control circuit 113.

According to one embodiment, the control circuit 113 may determine that the LED lighting 120 is in a standby state when it receives '0' from the comparison circuit 112, that is, when the sensed current or power is less than the reference value. there is. When the control circuit 113 determines that the LED lighting 120 is in a standby state according to the comparison result received from the comparison circuit 112, the supply of constant power input to the converter 114 is blocked. It can be controlled as much as possible. For example, as shown in FIG. 2, the L line input to the control circuit 113 may be blocked from being connected to the converter 114. As the supply of constant power input to the converter 114 is cut off, unnecessary loss of standby power can be reduced.

According to one embodiment, the control circuit 113 may control the operation of the sensor 111 or the comparison circuit 112 to perform or not perform the corresponding function. For example, as the control circuit 113 controls the operation of the sensor 111 or the comparison circuit 112 to a disabled state, the control signal received from the DALI controller 115 regardless of the value sensed by the sensor 111 It may operate to control the power supply to the converter 114 based solely on .

Figure 3 is a flowchart showing a lighting control method of a DALI ballast according to an embodiment of the present invention. The procedure of FIG. 3 described later can be implemented through the DALI stabilizer 110 of FIG. 2 described above. Referring to FIG. 3, the DALI stabilizer may control a relay (e.g., a control circuit) to be in the ON state (step 310). As the relay is controlled to be in the ON state, power may be supplied to the converter of the DALI stabilizer, Accordingly, the LED light can be emitted (step 320).

According to one embodiment, if the current sensed by the sensor while the relay is controlled to the ON state is less than the reference value (Ith), it may be determined to be in a standby state. As the DALI stabilizer determines that the LED lighting is in a standby state, it can block the power input to the converter by controlling the relay to the OFF state (step 340). In this way, the power input to the converter in the standby state is As this is blocked, unnecessary standby power consumption can be reduced. On the other hand, if the current sensed by the sensor exceeds the reference value (Ith) while the relay is being controlled to the ON state, it is determined that the LED light is continuously emitting, and the relay can be continuously controlled to the ON state. .

According to one embodiment, a control signal may be received through the DALI controller while the relay is OFF (step 350). For example, even if the power input to the converter is cut off, power is supplied to the DALI line connected to the DALI controller. Therefore, the DALI controller can receive the DALI protocol signal through the DALI line. If the received DALI protocol signal exceeds 0 (step 360), it is determined that the LED light should be emitted, and the relay can be controlled to the ON state (step 370). In this way, power is supplied to the converter in the standby state. Even if power is not supplied, power can be supplied to the converter again by turning on the relay by the DALI controller. As the relay is controlled to the ON state, power can be supplied to the converter, and LED lighting can be emitted at a level corresponding to the value of the DALI protocol signal.

According to one embodiment, in step 360, if the received DALI protocol signal is 0, it is determined that the LED lighting should be controlled to be turned off, and the relay may be continuously controlled to be turned off in step 340.

Figure 4 is a diagram showing the structure of a DALI stabilizer according to an embodiment of the present invention. Referring to FIG. 4, the DALI stabilizer 110 may be configured in a module form to the LED lighting 120, or may be attached to the LED lighting 120. For example, the DALI stabilizer 110 is a power input line and has a terminal 411 connected to the L line, a terminal 412 connected to the N line, and a terminal 413 connected to the PE line to receive power. . In addition, the DALI stabilizer 110 is a line for receiving a DALI communication protocol signal and is provided with terminals (421a, 421b, 422a, 422b) connected to the DALI protocol lines (DA+, DA-) to receive the DALI protocol signal. . Additionally, the DALI stabilizer 110 may include terminals 431, 432, 433, and 434 connected to a plurality of LED lights 120. According to one embodiment, the DALI stabilizer 110 may include a control circuit 113 and a DALI controller 115 therein.

Figure 5 is a diagram showing a DALI lighting control system according to an embodiment of the present invention. Referring to Figure 5, the DALI lighting control system includes a building management server 510, gateways 521, 522, 523, and 524, a control panel 530, a power supply 540, and a DALI control gear 550 (or DALI may include a control device).

According to one embodiment, building management server 510 may communicate with other DALI systems through gateways 522, 523, and 524. According to another embodiment, the building management server 510 may be connected to the control panel 530 via a gateway 521, which may be connected to the power supply 540 and other DALI control gear via a bus line. (550) (e.g., LED lighting 120, blinds 131, air conditioner 132, electric valve 133, air conditioner/temperature controller 134).

The invention has been described above with the purpose of method steps demonstrating the performance of specific functions and their relationships. The boundaries and order of these functional components and method steps are arbitrarily defined herein for ease of explanation. Alternative boundaries and orders may be defined as long as the specific functions and relationships above are performed properly. Any such alternative boundaries and sequences are therefore within the scope and spirit of the claimed invention. Additionally, the boundaries of these functional components are arbitrarily defined for convenience of explanation. Alternative boundaries can be defined as long as certain important functions are performed properly. Likewise, flow diagram blocks could also be arbitrarily defined herein to represent any significant functionality. For extended use, the flowchart block boundaries and order could be defined and still perform some important function. Alternative definitions of both functional components and flow diagram blocks and sequences are therefore within the scope and spirit of the claimed invention.

The invention may also have been described, at least in part, in terms of one or more embodiments. Embodiments of the invention are used herein to refer to the invention, its aspects, its features, its concepts, and/or examples thereof. A physical embodiment of an apparatus, article of manufacture, machine, and/or process embodying the invention may have one or more aspects, features, concepts, examples, etc. described with reference to one or more embodiments described herein. It can be included. Moreover, throughout the drawings, embodiments may incorporate identically or similarly named functions, steps, modules, etc., which may use the same or different reference numerals, such that the functions, steps, modules, etc. Steps, modules, etc. may be the same or similar functions, steps, modules, etc. or different from the above.

As described above, the present invention has been described with specific details such as specific components and limited embodiments and drawings, but this is only provided to facilitate a more general understanding of the present invention, and the present invention is not limited to the above embodiments. , those skilled in the art can make various modifications and variations from this description.

Accordingly, the spirit of the present invention should not be limited to the described embodiments, and the scope of the patent claims described below as well as all things that are equivalent or equivalent to the scope of this patent claim shall fall within the scope of the spirit of the present invention. .

110: DALI stabilizer 111: sensor
112: comparison circuit 113: control circuit
114: converter 115: DALI controller
120: LED light 131: Blind
132: air conditioner 133: electric valve
134: air conditioner/temperature controller 140: control panel
150: building management server 210: power supply

Claims (8)

It is electrically connected to at least one LED (light emitting diode) light, receives a DALI (Digital Addressable Lighting Interface) protocol signal from the control panel, and generates an LED light corresponding to the received DALI protocol signal among the at least one LED light. In the DALI stabilizer that supplies power,
a Dali controller that receives the DALI protocol signal from the control panel and generates an on or off signal based on the received DALI protocol signal;
A converter that receives power at a first voltage level from a power source and converts it into power at a second voltage level for emitting lighting; and
It includes a control circuit that turns on/off the supply of the power input to the converter between the converter and an input line through which power of the first voltage level is received from the power source,
The control circuit receives the on signal or the off signal from the Dali controller, and, based on the on signal or the off signal received from the Dali controller, at least one of the input lines through which the power is supplied to the converter. DALI stabilizer, which controls one line to be shorted or open with the converter.
The method of claim 1, wherein the Dali controller:
A DALI stabilizer that operates by power supplied from the power source.
The method of claim 1, wherein the Dali controller:
If the received DALI protocol signal corresponds to 0, transmitting the off signal to the control circuit,
The DALI stabilizer, wherein the control circuit controls, when receiving the off signal from the Dali controller, at least one of the input lines through which the power is supplied to the converter to be opened with the converter.
The method of claim 1, wherein the Dali controller:
When the received DALI protocol signal corresponds to 0, the brightness value of the LED light is set to 0, and then the control circuit is controlled to block the supply of the power input to the converter.
The method of claim 1, wherein the Dali controller:
If the received DALI protocol signal corresponds to a value exceeding 0, transmitting the on signal to the control circuit,
The control circuit, upon receiving the on signal from the Dali controller, controls at least one of the input lines through which the power is supplied to the converter to be short-circuited with the converter.
The method of claim 1, wherein the Dali controller:
If the received DALI protocol signal corresponds to a value exceeding 0, control the control circuit so that the power is input to the converter, and then set the brightness value of the LED light to a value corresponding to the DALI protocol signal. DALI stabilizer.
The method of claim 1, wherein if the power of the first voltage level is alternating current power, the converter is an AC/DC converter, and if the power of the first voltage level is direct current power, the converter is a DC/DC converter. DALI stabilizer.
The method of claim 1, wherein the DALI stabilizer is:
A sensor that senses current input from the power source to the converter; and
It includes a comparison circuit that compares the current sensed from the sensor with a set reference value,
The above Dali controller,
As a result of the comparison of the comparison circuit, when the sensed current is less than the reference value, the DALI stabilizer controls the control circuit to block the supply of the power input to the converter.