JP6939109B2 - Lighting control device, lighting equipment, lighting system - Google Patents

Description

The present invention relates to lighting control devices, luminaires and lighting systems.

Patent Document 1 describes a lighting device capable of obtaining input power with sufficient accuracy even if the characteristics of the light source load vary and the ambient temperature of the light source load changes, a lighting fixture using the lighting device, and lighting. The system is disclosed. Specifically, the control unit uses the power setting value that determines the magnitude of the power supplied to the light source load and the 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 operation of the power conversion unit is controlled, 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 obtains the obtained load. The input power is estimated by correcting the circuit loss with respect to the power.

Japanese Unexamined Patent Publication No. 2014-026737

The technique disclosed in Patent Document 1 provides a lighting device for lighting a light source with an input power estimation unit for estimating power consumption. 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 the power consumption is estimated by the lighting device, it is necessary to increase the capacity of a storage medium such as a CPU, so that a general-purpose component cannot be used as the lighting device. Therefore, the cost of the lighting device increases.

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

The present invention has been made to solve the above-mentioned problems, and provides a lighting control device, a lighting fixture, and a lighting system capable of calculating the power consumption of the lighting fixture and suitable for cost reduction. The purpose is.

The lighting control device according to the present invention detects a load circuit that lights a light source, a control circuit that controls the load circuit, a current detection circuit that detects a current flowing through the light source, and a voltage applied to the light source. The control circuit includes a voltage detection circuit for the operation and a communication terminal unit for communicating with the outside, and the control circuit includes a load power calculated from the current detected by the current detection circuit and the voltage detected by the voltage detection circuit, and the load power calculated from the voltage detection circuit. The model information stored in the control circuit is output from the communication terminal unit in response to a signal from the outside.

The luminaire according to the present invention includes a lighting control device and a light source connected to the lighting control device. The lighting control device includes a load circuit that lights the light source, a control circuit that controls the load circuit, a current detection circuit that detects a current flowing through the light source, and a voltage detection that detects a voltage applied to the light source. The control circuit includes a circuit and a communication terminal unit that communicates with the outside, and the control circuit includes a load power calculated from the current detected by the current detection circuit, the voltage detected by the voltage detection circuit, and the control circuit. It is characterized in that the stored model information and the stored model information are output from the communication terminal unit in response to a signal from the outside.

The lighting system according to the present invention 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 is provided with a command unit that communicates with the command device, and the lighting control device notifies the command device of the load power of the light source and the model information of the lighting control device in response to the request of the command 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 be clarified below.

According to the present invention, the power consumption of the luminaire can be accurately calculated by using the load power and the correction value according to the model information. Further, 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 suitable for lowering the price as compared with the case where the lighting control device calculates the power consumption.

It is a block diagram of the lighting control device which concerns on 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 a lighting system. It is a figure which shows the communication sequence of a lighting system. It is a figure which shows the efficiency table. It is a block diagram of the control circuit realized by hardware. It is a block diagram of the control circuit realized by software. It is a figure which shows the power loss table.

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

Embodiment 1.
FIG. 1 is a block diagram of a lighting control device 10 or 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 for lighting the light source 3. The load circuit 1 includes, for example, a well-known power factor improving circuit and a DCDC converter (direct current-DC converter) circuit. A well-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 the voltage applied to the light source 3. The voltage detection circuit 2 is a voltage dividing circuit that divides the 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 the current flowing through the light source 3. The current detection circuit 4 is, for example, a resistance element connected to the low voltage side of the light source 3.

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 configured by, for example, a microcomputer. 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 model number that can specify the electrical characteristic specifications of the lighting control device 10. The model information need only be stored in the lighting control device 10, and does not necessarily have to be 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 lit 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 portion 6 is a portion that is directly connected to the control circuit 5 and communicates with the outside. The communication terminal unit 6 is a portion that performs bidirectional communication, and includes, for example, a terminal that transmits and receives a control signal by a UART (Universal Asynchronous Receiver / Transmitter) method. The above-mentioned control circuit 5 outputs the calculated load power and the model information stored in the control circuit 5 from the communication terminal unit 6 in response to a signal from the outside.

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 to hold the light source unit 13 on the ceiling. By fixing the light source unit 13 to the fixture 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 the 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 such as a dimming controller cannot directly control the lighting control device 10. For example, the control unit 14 is a wireless module. The control unit 14 wirelessly communicates with a 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 lighting 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 means including a PC or a remote controller for the user to directly send and receive commands to the command device 8.

The command device 8 is a device that controls the lighting control devices 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 wirelessly communicates between the command device 8 and the plurality of lighting fixtures 9. All wireless communications may be replaced by wired communications.

The outline of the 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 receive the response command of the model information. Upon receiving this response command, the plurality of lighting fixtures 9 transmit 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 the model information to the command device 8.

After that, a process of notifying the user of the power consumption is performed. First, the user operates the command unit 7 to request the command device 8 to consume the power 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 request to the plurality of lighting fixtures 9. When the plurality of lighting fixtures 9 receive this command, the lighting control device 10 transmits load power to the command device 8 via the control unit 14. The load power is the 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 according 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 consumption for causing 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.

In this way, 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 lighting system 20 according to the first embodiment.

In a general lighting system, a command device 8 and a lighting fixture 9 to be controlled by the command device 8 are associated with each other to set a group at the time of initial setting. That is, the command device 8 makes it possible to recognize the individual lighting fixtures 9 to be controlled by the command device 8. There are various ways to do this. As a general method, the command device 8 picks up the unique addresses of the plurality of lighting fixtures 9, and the user operates the command unit 7 to select the lighting fixture 9 controlled by the command device 8. As a result, the command device 8 and the plurality of lighting fixtures 9 controlled by the command device 8 are determined. This work 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 at the time of the initial communication of the group setting. This requirement is represented by the signal TA in FIG. The command device 8 that has received the signal TA requests a unique address and model information from the plurality of lighting fixtures 9. This request is represented by the signal TB. The signal TB is transmitted to a plurality of luminaires 9.

The plurality of lighting fixtures 9 that have received the signal TB respond with the unique address and the 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 received the signal TB individually output the signal TC. The signal TC can be generated by storing the unique address and the model information in the lighting control device 10 in advance and reading them out. For example, the control circuit 5 of the lighting control device 10 stores the unique address and the model information in advance, and the control circuit 5 transmits the unique address and the model information.

The command device 8 that has received the signal TC 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 at the time of initial communication. With this initial communication, the user is ready to meet the demand for power consumption.

When the user monitors the power consumption of the lighting fixture 9, the command unit 7 requests the command device 8 to consume the power according to a command from the user. This requirement is represented by the signal TE in FIG. When the command device 8 receives a power consumption request from the command unit 7, the command device 8 requests the lighting control device 10 of the lighting fixture 9 for the load power of the light source 3. This requirement is represented by the 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 command device 8, the control circuit 5 is based on 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 turned on by the lighting control device 10 is calculated. After that, 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 the 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 the power consumption and that changes depending on the model information. The correction value in the first embodiment is the efficiency of the luminaire 9. Efficiency is the ratio of load power to consumed power. The command device 8 obtains the efficiency of the target lighting fixture 9 from the model information already obtained. When calculating the efficiency, an efficiency table for deriving the efficiency is used. It is preferable that the efficiency table is 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 the efficiency can be derived from the model information of the lighting control device 10, the voltage of the power supply 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 refers to the efficiency table from the model information acquired at the time of initial communication, as well as the power supply voltage information and dimming rate information held in advance, and derives the efficiency according to the model of the lighting fixture 9. do. Then, the command device 8 calculates the power consumption from the load power and the derived efficiency.

The power consumption consumed by the lighting control device 10 is calculated 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 at the time of power consumption monitoring is 50%, it can be seen from the efficiency table of FIG. 6 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 that stores the efficiency table. The power consumption information calculated by the command device 8 is transmitted to the command unit 7 as a signal TH. The power consumption is displayed on the screen of the command unit 7 or the like to notify the user of the power consumption. The power consumption may be notified to the user by voice.

By advancing the above sequence for the luminaire 9 for which the user has requested notification of power consumption, the user is notified of the power consumption of the luminaire. Therefore, when the user requests the power consumption of one specific luminaire 9, the above sequence is advanced for the luminaire 9, and when the user requests the power consumption of the plurality of luminaires 9, the plurality of luminaires 9 are used. The above sequence is advanced for 9.

In this way, the command device 8 identifies the efficiency of the lighting fixture 9 from 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. Efficiency was used as the correction value, but other parameters 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. By reflecting the model information in the calculation of power consumption, the power consumption can be calculated accurately.

By acquiring 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 an arbitrary timing after the initial communication. ..

By the way, as the command device 8 and the command unit 7, it is common to use a command device 8 and a command unit 7 having a large capacity of the storage medium of the CPU due to the specifications of the product. Therefore, the storage capacities of the command device 8 and the command unit 7 are often larger than the storage capacities of the lighting fixture 9. Therefore, when the efficiency table is stored in the luminaire 9 or the power consumption is calculated by the luminaire 9, it is necessary to increase the storage capacity of the luminaire 9 or improve the 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 often 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. Even if the power is calculated, it often does not increase the cost. Therefore, it is preferable that the efficiency table is stored in the command device 8 or the command unit 7, and the power consumption is calculated 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 the request of 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 the request of the command device 8. The processing circuit is a CPU (also referred to as a Central Processing Unit, a central processing unit, a processing unit, an arithmetic unit, a microprocessor, a microcomputer, a processor, or a DSP) that executes a program stored in a memory even if it is dedicated hardware. 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 parallel programmed processor, an ASIC, an FPGA, or a combination thereof. Notification of load power and notification of model information may be realized by separate processing circuits, or these functions may be collectively realized by processing circuits.

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

For each function of the control circuit 5, a part 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. The above-described processing circuit configuration can also be adopted for the command unit 7 and the command device 8.

The lighting system 20 according to the first embodiment acquires a correction value according 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, the lighting system 20 acquires the correction value according to the model information of the lighting control device 10. The power consumption is calculated from the correction value and the load power. As a result, the lighting system 20 can accurately calculate the power consumption and is suitable for price reduction. The lighting control device 10, the lighting fixture 9, and the lighting system 20 according to the first embodiment can be variously modified without departing from this feature. For example, in the first embodiment, the power consumption is notified to the user at the request of the user, but the power consumption is periodically notified even if the user does not request, or the power consumption acquired periodically is stored in the storage device. You may memorize it.

The power consumption may be calculated by the command unit 7 without calculating the power consumption by the command device 8. When the command unit 7 calculates the power consumption, it is preferable that the command unit 7 is provided with a storage unit that stores the efficiency table. In this case, the command device 8 transmits the load power responded by the luminaire 9 as a signal TH to the command unit 7 as it is. Then, the command unit 7 obtains a correction value from the efficiency table based on the model information, calculates the power consumption from the correction value and the load power, and displays the power consumption on the screen or the like.

The modification described in the first embodiment can also be applied to the lighting control device, the lighting fixture, and the lighting system according to the following embodiment. Since the lighting control device, the lighting fixture, and the lighting system according to the following embodiments have much in common with the first embodiment, the differences from the first embodiment will be mainly described.

Embodiment 2.
The lighting control device, the luminaire, and the lighting system according to the second embodiment are different from the first embodiment 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 the power loss from the model information of the lighting control device 10, the voltage of the power supply connected to the lighting control device 10, and the dimming rate.

FIG. 9 is a diagram showing a power loss table. The command device 8 selects the lost power from the lost power table as a correction value according to the model information of the lighting control device 10, and calculates the power consumption. Specifically, the power consumption of the lighting control device 10 is calculated by the following equation.
Win = Wout + β
Here, Win is power consumption, Wout is load power, and β is power loss. For example, if the model A, the power supply voltage is 200 V, and the dimming rate at the time of power consumption monitor is 50%, it can be seen that the power loss β is 2.6 W. When the load power is 17W, the power consumption is 17W + 2.6W = 19.6W. 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.

As described above, in the lighting system according to the second embodiment, the power consumption is calculated by specifying the power loss peculiar to the model information from the power loss table and using the power loss as a correction value. Therefore, it is possible to calculate the accurate power consumption that reflects the model information.

5 Control circuit, 7 Command unit, 8 Command device, 9 Lighting equipment, 10 Lighting control device, 20 Lighting system

Claims (8)

A load circuit that turns on the light source and
A control circuit that controls the load circuit and
A current detection circuit that detects the current flowing through the light source, and
A voltage detection circuit that detects the voltage applied to the light source, and
Equipped with a communication terminal that communicates with the outside
The control circuit responds to an external signal of the current detected by the current detection circuit, the load power calculated from the voltage detected by the voltage detection circuit, and the model information stored in the control circuit. A lighting control device characterized by outputting power from the communication terminal unit. The lighting control device according to claim 1, wherein the model information is a model name or model number capable of specifying the electrical characteristic specifications of the lighting control device. The lighting control device according to claim 1 or 2,
A lighting fixture including a light source connected to the lighting control device. A lighting fixture having a lighting control device and a light source connected to the lighting control device, and
A command device that controls the lighting control device and
It is equipped with a command unit that communicates with the command device according to a command from the user.
The lighting control device notifies the command device of the load power of the light source and the model information of the lighting control device in response to the request of the command device.
The lighting system, wherein the command device or 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. The command device or the command unit includes a storage unit that stores an efficiency table for deriving efficiency from the model information of the lighting control device, the voltage of the power supply connected to the lighting control device, and the dimming rate.
The lighting system according to claim 4, wherein the command device or the command unit specifies the efficiency by 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 that derives power loss from the model information of the lighting control device, the voltage of the power supply connected to the lighting control device, and the dimming rate. ,
The lighting system according to claim 4, wherein the command device or the command unit identifies the lost power from the lost power table and uses the lost power as the correction value. The method according to any one of claims 4 to 6, wherein the model information is stored in the lighting control device, and the command device acquires the model information from the lighting control device at the time of initial communication. Lighting system. The command unit requests power consumption from the command device according to a command from the user.
When the command device receives a power consumption request from the command unit, the command device requests the lighting control device for the load power of the light source.
When the lighting control device receives a request for the load power of the light source from the command device, the lighting control device notifies the command device of the load power.
The command device according to any one of claims 4 to 7, wherein the command device calculates the power consumption of the lighting control device from the load power of the light source and the correction value, and notifies the user. Lighting system.

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