JP2018206741A - Lighting control device, lighting fixture, and illumination system - Google Patents

Abstract

To provide a lighting control device, a lighting fixture, and an illumination system, which are capable of calculating power consumption of a lighting fixture and also suitable for price reduction.SOLUTION: A lighting control device includes a load circuit to light a light source, a control circuit to control the load circuit, a current detection circuit to detect current flowing through the light source, a voltage detection circuit to detect voltage applied to the light source, and a communication terminal part to communicate with the outside. The control circuit outputs, from the communication terminal part, load power calculated from current detected in the current detection circuit and voltage detected in the voltage detection circuit, and model information stored in the control circuit in accordance with a signal from the outside.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a lighting control device, a lighting fixture, and a lighting system.

  Patent Document 1 discloses a lighting device capable of obtaining input power with sufficient accuracy even when the characteristics of the light source load vary and the ambient temperature of the light source load varies, and a lighting fixture using the same, and illumination A system is disclosed. Specifically, the control unit uses a power setting value that determines the amount of power supplied to the light source load and a current detection value detected by the current detection resistor so that the load current flowing through the light source load becomes a constant value. The load power calculation unit obtains the load power of the light source load using the power set value and the voltage detection value detected by the voltage detection unit, and the input power estimation unit determines the obtained load. The input power is estimated by correcting the circuit loss with respect to the power.

JP 2014-026737 A

  The technique disclosed in Patent Document 1 is provided with an input power estimation unit that estimates power consumption in a lighting device that turns on a light source. In the technique disclosed in Patent Document 1, since the input power estimation unit is provided in the lighting device and the power consumption is estimated by the input power estimation unit, the processing in the lighting device becomes complicated. Further, when estimating the power consumption by the lighting device, it is necessary to increase the capacity of a storage medium such as a CPU, so that general-purpose components cannot be used as the lighting device. This increases the cost of the lighting device.

  Generally, a lighting system includes a plurality of lighting fixtures. That is, the lighting system has a plurality of lighting devices. In such an illumination system, when the expensive lighting device disclosed in Patent Document 1 is used, the introduction cost of the illumination system increases.

  The present invention has been made to solve the above-described problems, and provides a lighting control device, a lighting fixture, and a lighting system that can calculate the power consumption of the lighting fixture and are suitable for lowering the price. For the purpose.

  A lighting control device according to the invention of the present application detects a load circuit for lighting a light source, a control circuit for controlling the load circuit, a current detection circuit for detecting a current flowing through the light source, and a voltage applied to the light source. A voltage detecting circuit that communicates with the outside, and the control circuit includes a load power calculated from the current detected by the current detecting circuit and the voltage detected by the voltage detecting circuit, and The model information stored in the control circuit and the communication terminal unit are output in accordance with an external signal.

  The lighting fixture which concerns on invention of this application is equipped with a lighting control apparatus and the light source connected to this lighting control apparatus. The lighting control device includes a load circuit for lighting the light source, a control circuit for controlling the load circuit, a current detection circuit for detecting a current flowing through the light source, and a voltage detection for detecting a voltage applied to the light source. A circuit and a communication terminal unit that communicates with the outside, and the control circuit includes a load power calculated from a current detected by the current detection circuit and a voltage detected by the voltage detection circuit, and the control circuit The stored model information and output from the communication terminal unit in accordance with an external signal.

  An illumination system according to the invention of the present application includes a lighting fixture having a lighting control device, a light source connected to the lighting control device, a command device for controlling the lighting control device, and the command device according to a command from a user. The lighting control device, in response to a request from the command device, notifies the command device of the load power of the light source and the model information of the lighting control device. Alternatively, the command unit calculates the power consumption of the lighting control device from the load power of the light source and the correction value according to the model information.

  Other features of the present invention will become apparent below.

  ADVANTAGE OF THE INVENTION According to this invention, the power consumption of a lighting fixture can be calculated correctly using load electric power and the correction value according to model information. In addition, since the power consumption is calculated by the command device or the command unit, it is possible to provide a lighting control device, a lighting fixture, and a lighting system that are suitable for lowering costs compared to the case where the power consumption is calculated by the lighting control device.

1 is a block diagram of a lighting control device according to Embodiment 1. FIG. It is a perspective view of a lighting fixture. It is a perspective view of a light source unit. It is a block diagram of an illumination system. It is a figure which shows the communication sequence of an illumination system. It is a figure which shows an efficiency table. It is a block diagram of the control circuit implement | achieved by hardware. It is a block diagram of the control circuit implement | achieved by software. It is a figure which shows a power loss table.

  A lighting control device, a lighting fixture, and a lighting system according to an embodiment of the present invention will be described with reference to the drawings. The same or corresponding components are denoted by the same reference numerals, and repeated description may be omitted.

Embodiment 1 FIG.
FIG. 1 is a block diagram of the lighting control device 10 and the like according to the first embodiment. A light source 3 is connected to the lighting control device 10. The lighting control device 10 includes a load circuit 1, a voltage detection circuit 2, a current detection circuit 4, a control circuit 5, and a communication terminal unit 6. The load circuit 1 is a circuit that turns on the light source 3. The load circuit 1 includes, for example, a well-known power factor correction circuit and a DCDC converter (direct current-DC converter) circuit. A known circuit that converts AC power into DC power can be used as the load circuit 1.

  The voltage detection circuit 2 is a circuit that detects a voltage applied to the light source 3. The voltage detection circuit 2 is a voltage dividing circuit that divides a voltage applied to the light source 3 by, for example, two resistance elements connected in series. The current detection circuit 4 is a circuit that detects a current flowing through the light source 3. The current detection circuit 4 is a resistance element connected to the low voltage side of the light source 3, for example.

  The control circuit 5 is a circuit that controls the load circuit 1. The control circuit 5 is a circuit capable of writing and storing information, and executes a predetermined process by extracting the information. The control circuit 5 can be constituted by a microcomputer, for example. In the production process of the lighting control device 10, the model information of the lighting control device 10 is stored in the storage device of the control circuit 5. The model information is a model name or a model number that can specify the electrical characteristic specification of the lighting control device 10. The model information only needs to be stored in the lighting control device 10, and is not necessarily stored in the control circuit 5.

  The control circuit 5 is connected to the current detection circuit 4 and the voltage detection circuit 2. The control circuit 5 can calculate the load power of the light source 3 that is turned on by the lighting control device 10 from the current detected by the current detection circuit 4 and the voltage detected by the voltage detection circuit 2.

  The communication terminal unit 6 is directly connected to the control circuit 5 and is a part that communicates with the outside. The communication terminal unit 6 is a part that performs bidirectional communication, and includes, for example, a terminal that transmits and receives control signals in a UART (Universal Asynchronous Receiver / Transmitter) system. The control circuit 5 described above outputs the calculated load power and the model information stored in the control circuit 5 from the communication terminal unit 6 in accordance with an external signal.

  FIG. 2 is a perspective view of the lighting fixture 9. The lighting fixture 9 includes a light source unit 13 and a fixture main body 12 fixed to the ceiling in order to hold the light source unit 13 on the ceiling. Since the light source unit 13 is fixed to the instrument body 12, the light source unit 13 is held on the ceiling.

  FIG. 3 is a perspective view of the light source unit 13. The light source unit 13 includes a lighting control device 10, a light source 3, and a control unit 14. The control unit 14 converts a signal from a dimming controller or the like into a signal for controlling the lighting control device 10. The control unit 14 is connected to the communication terminal unit 6 of the lighting control device 10, and performs bidirectional communication with the lighting control device 10 like, for example, a UART control signal. The control unit 14 is used when a signal from a dimming controller or the like cannot directly control the lighting control device 10. For example, the control unit 14 is a wireless module. The control unit 14 performs wireless communication with the dimming controller or the like, and controls the light source 3 by converting a command from the dimming controller or the like into a signal for the control unit 14 to control the lighting control device 10.

  FIG. 4 is a configuration diagram of the illumination system 20 according to the first embodiment. The lighting system 20 includes a command unit 7, a command device 8, and a plurality of lighting fixtures 9. The command unit 7 is a part that communicates with the command device 8 according to a command from the user. More specifically, the command unit 7 is a command unit including a PC or a remote controller for allowing a user to directly send and receive commands to the command device 8.

  The command device 8 is a device that controls the lighting control device 10 of the plurality of lighting fixtures 9. More specifically, the command device 8 is a dimming controller that controls dimming and the like of the lighting fixture 9. The plurality of lighting fixtures 9 are all the same as the lighting fixture 9 of FIG. The lighting system 20 performs wireless communication between the command unit 7 and the command device 8 and performs wireless communication between the command device 8 and the plurality of lighting fixtures 9. All wireless communications may be replaced with wired communications.

  An outline of a sequence in which the lighting system 20 notifies the user of the accurate power consumption of the lighting fixture 9 will be described. First, the command unit 7 requests model information from a plurality of lighting fixtures 9 via the command device 8. That is, the plurality of lighting fixtures 9 receives a response command for model information. Upon receiving this response command, the plurality of lighting fixtures 9 transmits model information from the lighting control device 10 to the command device 8 via the control unit 14. The model information is transmitted individually by all the lighting fixtures 9 that have received the response command. That is, all the lighting fixtures 9 transmit model information to the command device 8.

  Thereafter, processing for notifying the user of power consumption is performed. First, the user operates the command unit 7 to request the command device 8 for the power consumption of the lighting fixture 9. This request is transmitted from the command unit 7 to the command device 8, and the command device 8 transmits the plurality of lighting fixtures 9. When a plurality of lighting fixtures 9 receives this command, the lighting control device 10 transmits load power to the command device 8 via the control unit 14. The load power is power consumed by the light source 3. The command device 8 or the command unit 7 calculates the power consumption of the lighting control device 10 from the load power of the light source 3 and the correction value corresponding to the model information of the lighting control device 10 that controls the light source 3. The calculated power consumption is notified to the user. The power consumption of the lighting control device 10 is the power consumed to cause the light source 3 to emit light. The power consumption of the lighting control device 10 and the power consumption of the lighting fixture 9 have the same meaning.

  Thus, the command device 8 or the command unit 7 calculates the power consumption from the load power and the correction value. This sequence will be described in more detail with reference to FIG. FIG. 5 is a diagram showing a communication sequence of the illumination system 20 according to the first embodiment.

  In a general lighting system, at the time of initial setting, the command device 8 and the lighting fixture 9 to be controlled are linked to perform group setting. That is, the instruction device 8 can recognize individual lighting fixtures 9 to be controlled by the instruction device 8. There are various methods for the means. As a general method, the commanding device 8 picks up the unique addresses of the plurality of lighting fixtures 9 and the user operates the commanding unit 7 to select the lighting fixture 9 controlled by the commanding device 8. Thereby, the command device 8 and a plurality of lighting fixtures 9 controlled by the command device 8 are determined. This operation is called group setting.

  In the lighting system 20 according to the first embodiment, the command unit 7 requests the command device 8 for the unique address and model information of the lighting fixture 9 during the initial communication of the group setting. This request is represented by a signal TA in FIG. Upon receiving the signal TA, the commanding device 8 requests a plurality of lighting fixtures 9 for unique addresses and model information. This request is represented by signal TB. The signal TB is transmitted to the plurality of lighting fixtures 9.

  The plurality of lighting fixtures 9 that have received the signal TB respond with a unique address and model information. The signal TC indicates that the luminaire 9 transmits a unique address and model information to the command device 8. All the luminaires 9 that have received the signal TB individually issue the signal TC. The unique address and the model information are stored in advance in the lighting control device 10, and the signal TC can be generated by reading them out. For example, the unique address and model information are stored in advance in the control circuit 5 of the lighting control device 10, and the unique address and model information are transmitted from the control circuit 5.

  Upon receiving the signal TC, the command device 8 transmits the unique addresses and model information of the plurality of lighting fixtures 9 to the command unit 7 as a signal TD. Through the above communication, the command device 8 and the command unit 7 can grasp the model information of the plurality of lighting fixtures 9 controlled by the command device 8 during the initial communication. With this initial communication, preparations are made to meet the demand for power consumption from the user.

  When the user monitors the power consumption of the lighting fixture 9, the command unit 7 requests the command device 8 for power consumption according to a command from the user. This requirement is represented by signal TE in FIG. When the command device 8 receives a request for power consumption from the command unit 7, the command device 8 requests the load power of the light source 3 from the lighting control device 10 of the lighting fixture 9. This requirement is represented by signal TF in FIG.

  The luminaire 9 calculates the load power immediately after receiving the signal TF. Specifically, when the control circuit 5 receives a request for the load power of the light source 3 from the commanding device 8, the control circuit 5 determines from the current detected by the current detection circuit 4 and the voltage detected by the voltage detection circuit 2. The load power of the light source 3 that is turned on by the lighting control device 10 is calculated. Thereafter, the control circuit 5 notifies the command device 8 of the calculated load power value via the communication terminal unit 6. This notification is represented by a signal TG in FIG.

  The command device 8 that has received the signal TG calculates the power consumption of the lighting control device 10 from the load power of the light source 3 and the correction value. The correction value is a value that is necessary for calculating power consumption and that changes depending on the model information. The correction value in the first embodiment is the efficiency of the lighting fixture 9. Efficiency is the ratio of load power to consumed power. The command device 8 obtains the efficiency of the target lighting fixture 9 based on the model information already obtained. When obtaining the efficiency, an efficiency table for deriving the efficiency is used. The efficiency table is preferably stored in advance in the storage unit of the command device 8.

  FIG. 6 is a diagram showing an efficiency table. The efficiency table is a table for deriving efficiency. The efficiency table is a table from which efficiency can be derived from the model information of the lighting control device 10, the voltage of the power source connected to the lighting control device 10, and the dimming rate. Since the command device 8 is the main control body of the lighting fixture 9, it has information on the power supply voltage and the dimming rate in advance. The command device 8 derives the efficiency according to the model of the lighting fixture 9 by referring to the efficiency table from the model information acquired at the time of initial communication, the power supply voltage information and the dimming rate information that are previously held. To do. Then, the command device 8 calculates power consumption from the load power and the derived efficiency.

The power consumption consumed by the lighting control device 10 is obtained by the following equation.
Win = Wout / α
Here, Win is power consumption, Wout is load power, and α is efficiency.
For example, when the model is A, the power supply voltage is 200 V, and the dimming rate during power consumption monitoring is 50%, the efficiency table in FIG. 6 shows that the efficiency is 87%. That is, α is 87%. In this case, if the load power is 17 W, the power consumption is 17 W / 87% = 19.5 W. This calculation is preferably performed by the command device 8 which is a device storing the efficiency table. Information on the power consumption calculated by the commanding device 8 is transmitted to the commanding unit 7 as a signal TH. The power consumption is displayed on the screen of the command unit 7 and the power consumption is notified to the user. The power consumption may be notified to the user by voice.

  By advancing the above-described sequence for the lighting fixture 9 for which the user has requested the power consumption notification, the user is notified of the power consumption of the lighting fixture. Therefore, when the user obtains the power consumption of one specific lighting fixture 9, the above-described sequence is advanced for the lighting fixture 9, and when the user obtains the power consumption of the plurality of lighting fixtures 9, the plurality of lighting fixtures. The above sequence is advanced for 9.

  Thus, the command device 8 specifies the efficiency of the lighting fixture 9 by using the efficiency table, and uses the efficiency as a correction value. Then, the command device 8 calculates the power consumption from the received load power and the correction value. Although efficiency is used as the correction value, another parameter may be used. As described above, the correction value is a value that is necessary for calculating the power consumption and that changes depending on the model information. The power consumption can be accurately obtained by reflecting the model information in the calculation of the power consumption.

  When the command device 8 acquires the model information from the lighting control device 10 during the initial communication between the command device 8 and the lighting fixture 9, it is possible to calculate the power consumption according to the user's request at any timing after the initial communication. .

  By the way, it is common to use the command device 8 and the command unit 7 having a large storage medium capacity of the CPU in terms of product specifications. Therefore, the storage capacity of the command device 8 and the command unit 7 is often larger than the storage capacity of the lighting fixture 9. Therefore, when it is set as the structure which memorize | stores an efficiency table in the lighting fixture 9, or performs calculation of power consumption with the lighting fixture 9, it is necessary to raise the memory capacity of the lighting fixture 9 or to improve a processing speed. Therefore, the cost of the lighting fixture 9 is increased. On the other hand, since the command device 8 and the command unit 7 have a large storage capacity and a high processing speed, the efficiency table is stored in the command device 8 or the command unit 7 or consumed by the command device 8 or the command unit 7. In many cases, calculating the power does not increase the cost. Therefore, the efficiency table is preferably stored in the command device 8 or the command unit 7, and the calculation of power consumption is preferably performed by the command device 8 or the command unit 7.

  In order to obtain the above effect, the lighting control device 10 needs to notify the command device 8 of the load power of the light source 3 and the model information of the lighting control device 10 in response to a request from the command device 8. In the first embodiment, the control circuit 5 of the lighting control device 10 plays this role. Therefore, the control circuit 5 includes a processing circuit for notifying the command device 8 of the load power of the light source 3 and the model information of the lighting control device 10 in response to a request from the command device 8. Even if the processing circuit is dedicated hardware, a CPU that executes a program stored in the memory (Central Processing Unit, central processing unit, processing unit, arithmetic unit, microprocessor, microcomputer, processor, DSP) It may be.

  When the processing circuit is dedicated hardware, the processing circuit corresponds to, for example, a single circuit, a composite circuit, a programmed processor, a processor programmed in parallel, an ASIC, an FPGA, or a combination thereof. The notification of the load power and the notification of the model information may be realized by separate processing circuits, or these functions may be realized together by the processing circuit.

  When the processing circuit is a CPU, the load power notification function and the model information notification function are realized by software, firmware, or a combination of software and firmware. Software or firmware is described as a program and stored in a memory. The processing circuit implements each function by reading and executing a program stored in the memory. That is, the processing circuit includes a memory for storing a program in which notification of load power and notification of model information are executed as a result. It can also be said that these programs cause the computer to execute notification of load power and notification of model information. Here, the memory corresponds to, for example, a non-volatile or volatile semiconductor memory such as RAM, ROM, flash memory, EPROM, and EEPROM, a magnetic disk, a flexible disk, an optical disk, a compact disk, a mini disk, and a DVD.

  A part of each function of the control circuit 5 may be realized by dedicated hardware, and a part may be realized by software or firmware. FIG. 7 is a configuration diagram of the control circuit 5 when the control circuit 5 is realized by hardware. FIG. 8 is a configuration diagram of the control circuit 5 when the control circuit 5 is realized by software. Note that the configuration of the processing circuit described above can also be adopted for the command unit 7 and the command device 8.

  The lighting system 20 according to Embodiment 1 acquires a correction value corresponding to the model information of the lighting control device 10 from the efficiency table stored in advance by the command device 8 or the command unit 7, and outside the lighting fixture 9, Power consumption is calculated from the correction value and load power. Thereby, the illumination system 20 can calculate power consumption accurately, and is suitable for cost reduction. The lighting control device 10, the lighting fixture 9, and the lighting system 20 according to Embodiment 1 can be variously modified without departing from this feature. For example, in the first embodiment, the power consumption is notified to the user in response to the user's request. However, the power consumption is regularly notified even when the user does not request, or the power consumption acquired periodically is stored in the storage device. Or may be memorized.

  The command unit 7 may calculate the power consumption without calculating the power consumption in the command device 8. When the command unit 7 calculates power consumption, it is preferable to provide the command unit 7 with a storage unit that stores an efficiency table. In this case, the command device 8 transmits the load power responded by the lighting fixture 9 as it is to the command unit 7 as the signal TH. And the instruction | command part 7 calculates | requires a correction value from an efficiency table based on model information, calculates power consumption from the correction value and load power, and displays power consumption on a screen.

  The modification described in the first embodiment can also be applied to a lighting control device, a lighting fixture, and a lighting system according to the following embodiments. In addition, since the lighting control device, the lighting fixture, and the lighting system according to the following embodiment have many common points with the first embodiment, the differences from the first embodiment will be mainly described.

Embodiment 2. FIG.
The lighting control device, lighting fixture, and lighting system according to Embodiment 2 are different from Embodiment 1 in that a loss is used as a correction value. The command device 8 or the command unit 7 according to the second embodiment has a storage unit that stores a power loss table. The power loss table is a table for deriving power loss from the model information of the lighting control device 10, the voltage of the power source connected to the lighting control device 10, and the dimming rate.

FIG. 9 is a diagram illustrating a loss power table. The command device 8 calculates the power consumption by selecting the power loss from the power loss table as a correction value in accordance with the model information of the lighting control device 10. Specifically, the power consumption of the lighting control device 10 is obtained by the following equation.
Win = Wout + β
Here, Win is power consumption, Wout is load power, and β is loss power. For example, if the model A, the power supply voltage 200V, and the dimming rate 50% during power consumption monitoring, the power loss β is 2.6 W. When the load power is 17 W, the power consumption is 17 W + 2.6 W = 19.6 W. This calculation is performed by the device that stores the power loss table, that is, the command device 8 or the command unit 7. The calculated power consumption is notified to the user by an arbitrary method.

  Thus, in the lighting system according to Embodiment 2, the power consumption is calculated by specifying the power loss specific to the model information from the power loss table and using the power loss as a correction value. Therefore, it is possible to calculate accurate power consumption reflecting the model information.

DESCRIPTION OF SYMBOLS 5 Control circuit, 7 Command part, 8 Command apparatus, 9 Lighting fixture, 10 Lighting control apparatus, 20 Lighting system

Claims (8)

A load circuit that turns on the light source;
A control circuit for controlling the load circuit;
A current detection circuit for detecting a current flowing through the light source;
A voltage detection circuit for detecting a voltage applied to the light source;
A communication terminal unit that communicates with the outside,
The control circuit responds to the signal from the outside with the load power calculated from the current detected by the current detection circuit, the voltage detected by the voltage detection circuit, and the model information stored in the control circuit. Output from the communication terminal unit.   The lighting control device according to claim 1, wherein the model information is a model name or a model number that can specify an electrical characteristic specification of the lighting control device. The lighting control device according to claim 1 or 2,
And a light source connected to the lighting control device. A lighting fixture comprising: a lighting control device; and a light source connected to the lighting control device;
A command device for controlling the lighting control device;
A command unit that communicates with the command device according to a command from a user,
The lighting control device notifies the command device of load power of the light source and model information of the lighting control device in response to a request from the command device.
The lighting system, wherein the command device or the command unit calculates power consumption of the lighting control device from a load power of the light source and a correction value according to the model information. The command device or the command unit includes a storage unit that stores an efficiency table for deriving efficiency from model information of the lighting control device, a voltage of a power source connected to the lighting control device, and a dimming rate,
The lighting system according to claim 4, wherein the command device or the command unit specifies efficiency based on the efficiency table and uses the efficiency as the correction value. The command device or the command unit includes a storage unit that stores a power loss table for deriving power loss from model information of the lighting control device, a voltage of a power source connected to the lighting control device, and a dimming rate. ,
The lighting system according to claim 4, wherein the command device or the command unit specifies a power loss based on the power loss table and uses the power loss as the correction value.   The said model information is memorize | stored in the said lighting control apparatus, The said command apparatus acquires the said model information from the said lighting control apparatus at the time of initial stage communication, The any one of Claims 4-6 characterized by the above-mentioned. Lighting system. The command unit requests power consumption from the command device according to a command from a user,
When the command device receives a request for power consumption from the command unit, the command device requests load power of the light source from the lighting control device,
The lighting control device, when receiving a request for load power of the light source from the command device, notifies the command device of the load power,
The said instruction | indication apparatus calculates the power consumption of the said lighting control apparatus from the load electric power of the said light source, and the said correction value, It notifies to a user, The any one of Claims 4-7 characterized by the above-mentioned. Lighting system.

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