JP4448411B2 - Light control system for interior lighting equipment - Google Patents

Description

  The present invention relates to a system for dimming a lighting fixture that illuminates the interior of a house.

  Conventionally, in order to save power consumption in a house, indoor lighting using both sunlight and lighting fixtures has been attempted. As a conventional invention applicable to this, firstly, the illuminance of sunlight taken into the room through the light guide path from the daylighting part of the house is measured, and when it is below a predetermined value, the solar cell of the daylighting part The artificial light source is turned on by adjusting the illuminance so that the illuminance corresponding to the difference from the predetermined value is compensated using the generated power, and the artificial light source is turned off when the electric power exceeds the predetermined value. (For example, patent document 1).

Second, by using artificial lighting that is lit by the power generated by the solar cell provided on the kite, the area inside the kite is illuminated by illuminating the area where sunlight is blocked by the kite. There exists a thing of making it the brightness according to the solar radiation state (for example, patent document 2).
JP-A-6-111610 Japanese Unexamined Patent Publication No. 7-57877

  The first prior art described above is easily adopted in an existing house because the sunlight collecting path is limited to the daylighting section and the light guiding path, and these must be installed in the house in advance. Can not do it. In addition, the second prior art can be used only for outdoor facilities such as a stadium-covered stadium stand and is not divertable to a house. As described above, any of the conventional techniques has a disadvantage in terms of versatility to be adopted in existing houses.

  The present invention has been made in view of the above circumstances, and it is an object of the present invention to reduce power consumption in a house by using indoor lighting by using a combination of sunlight and a lighting fixture even in an existing house. It is to provide a dimming system for an instrument.

  In order to achieve the above object, the light control system for an indoor lighting apparatus according to the first aspect of the present invention includes an average illuminance of sunlight incident on a room through a window 1a of a house 1 as shown in a basic configuration diagram of FIG. The indoor lighting fixture dimming system for dimming the indoor lighting fixture 13 in response to the generated electric energy measurement means for measuring the amount of electric power generated by the solar cell 5 arranged outdoors of the house 1 7 and the measurement result of the generated power amount measuring means 7, and from the received measurement result of the generated power amount measuring means 7, the unit area generated by the solar cell 5 and the power amount per unit time are calculated. Based on the amount of power stored in the temporary storage unit 21b and the amount of power stored in the temporary storage unit 21b, the unit area of sunlight irradiated to the house 1 and the average illuminance per unit time are calculated and stored in the temporary storage unit 21b. Based on the latitude and longitude of the house 1 stored in advance in the non-volatile storage means 23 and the current calendar and time managed by the clock means 25. The solar position calculation means 21B that calculates the current altitude and direction of the sun and stores it in the temporary storage means 21b, and the installation direction and opening area of the window 1a stored in advance in the nonvolatile storage means 23 in the house 1 The solar radiation amount calculating means 21A temporarily stores the average illuminance per unit area and unit time of the sunlight irradiated on the house 1 and the average illuminance stored in the temporary storage means 21b by the solar radiation amount calculating means 21A. The current altitude of the sun with respect to the house 1 calculated by the sun position calculating means 21B and stored in the temporary storage means 21b at the time of storage in the means 21b The incident light amount calculating means 21C for calculating the average illuminance per unit time of the sunlight entering the room from the window 1a and storing it in the temporary storage means 21b, and the illuminance in the room is a non-volatile storage means. The average illuminance per unit time of sunlight incident on the room from the window 1a, which is stored in the temporary storage means 21b by the incident amount calculation means 21C so that the optimum illuminance in the room is stored in advance in 23. And a dimming control means 21D for dimming the lighting fixture 13 by the lighting dimming means 15 based on the optimal illumination intensity stored in advance in the nonvolatile storage means 23. .

  Moreover, the light control system of the indoor lighting fixture of the present invention described in claim 2 is the light control system of the indoor lighting fixture of the present invention described in claim 1, wherein the solar radiation amount calculating means 21A is provided in the house 1. It is assumed that the measurement result of the generated power amount measuring means 7 is received via a home network 11 which is installed and various information in the house 1 is transmitted.

  When sunlight enters the room from the window 1a of the house 1, the factors governing the average illuminance of the incident sunlight include the unit area of the sunlight irradiated to the house 1 and the average illuminance per unit time, the house 1 The relationship between the altitude and direction of the sun with respect to the installation direction of the window 1a in the house, and the opening area of the window 1a in the house 1. Among these, the installation orientation of the window 1a with respect to the house 1 and the opening area of the window 1a are unchanged once determined, but the unit area of the sunlight irradiated to the house 1 and the average illuminance per unit time and the altitude of the sun And direction changes with time and a season.

  Therefore, in the dimming system for indoor lighting equipment according to the first aspect of the present invention, the house 1 is irradiated from the amount of power generated by the outdoor solar cell 5 of the house 1 measured by the power generation amount measuring means 7. The unit area of sunlight and the average illuminance per unit time are calculated by the solar radiation amount calculating means 21A, stored in the temporary storage means 21b, and calculated by the solar position calculating means 21B and stored in the temporary storage means 21b. The relationship between the altitude and direction of the sun, which changes depending on the time and season, and the installation direction of the window 1a in the house 1 stored in advance in the non-volatile storage means 23, and also in the non-volatile storage means 23 in advance. Taking into account the opening area of the window 1a of the house 1 stored, the incident amount per unit time of sunlight entering the room from the window 1a is an incident amount calculating means Based on this, the dimming control means 21D performs illumination dimming means so that the illuminance in the room becomes the optimum illuminance stored in advance in the non-volatile storage means 23 based on this. The light fixture 13 is dimmed by 15.

  Thereby, even if it is the existing house 1, the illuminance on the basis of the optimum illuminance while reducing the power consumption by using the sunlight entering the room through the window 1a of the house 1 and the indoor lighting fixture 13 in combination. It is possible to control the illuminance in the room.

  Moreover, according to the light control system of the indoor lighting fixture of this invention described in Claim 2, in the light control system of the indoor lighting fixture of this invention described in Claim 1, in order to transmit the various information in the house 1 Power generation measurement that measures the amount of power generated by the solar cell 5 in order to sell surplus power to an electric power company or to determine the amount of combined use of commercial power, etc. When the means 7 is already provided and the measurement result is exchanged via the home network 11, the existing configuration can be used efficiently, and the lighting fixture 13 capable of reducing power consumption can be dimmed. it can.

  Hereinafter, the light control system of the indoor lighting fixture of this invention is demonstrated with reference to drawings.

  FIG. 2 is an explanatory diagram showing, in partial block form, a schematic configuration of a house that employs a light control system for indoor lighting equipment according to an embodiment of the present invention. The house of this embodiment shown in FIG. 3 is arranged with a solar cell panel 5 (corresponding to the solar cell in the claims), and the amount of electric power generated by the solar cell panel 5 using sunlight is measured by a watt hour meter 7 (measurement of generated electric energy in the claims) The power generated by the solar battery panel 5 is stored in the power storage unit 9 and consumed by the electrical equipment in the house 1, or surplus power is supplied through the power line to the power company. Configured to be transmitted and sold.

  The home 1 is provided with a home network (LAN) 11 connected to the Internet line. The home network 11 includes a light control device 15 for dimming the lighting fixtures 13 in each room of the home 1. A hot water supply apparatus such as a centralized controller installed in a kitchen or the like (not shown) is connected.

  The amount of power generated by the solar cell panel 5 and stored in the power storage unit 9 is based on the amount of power input from the watt hour meter 7 via the home network 11 (hereinafter referred to as “microcomputer” in the centralized controller). Abbreviated as “microcomputer.”) Based on this, the amount of power supplied from the power storage unit 9 for consumption by the electrical equipment in the house 1 and the power company from the power storage unit 9 via the power line to the power company The amount of power to be transmitted and sold is controlled by the microcomputer 21. Furthermore, the operation of the light control device 15 and the bath hot water supply device 17 is controlled by a control signal supplied from the microcomputer 21 via the home network 11.

  The microcomputer 21 has a CPU 21a, a RAM 21b, and a ROM 21c as shown in a block diagram of an electrical configuration in FIG. 3, and among these, the CPU 21a is cut off from power supply in addition to the RAM 21b and the ROM 21c. However, a non-volatile memory (hereinafter abbreviated as NVM) 23 in which stored data is not lost, a clock device 25 (corresponding to clock means in claims) for managing the current calendar (year / month / day) and time, A driver 27 of the light control device 15 of the lighting fixture 13, an interface 29 to the home network 11, and the like are connected.

  The RAM 21b has a data area for storing various data and a work area used for various processing operations, and the ROM 21c stores a control program for causing the CPU 21a to perform various processing operations.

  In the NVM 23, the latitude and longitude of the position where the house 1 is built, the installation direction and the opening area of the window 1a provided in each room of the house 1 with respect to the house 1 are stored separately for each room. Further, from the latitude and longitude of the house 1 and the current calendar (year / month / day) and time, a calculation formula for calculating the altitude and direction of the sun with respect to the house 1, the area of the solar cell panel 5, The power generation efficiency (for example, the correlation of the amount of generated power with respect to the amount of solar radiation of the solar battery panel 5) and the optimum illuminance for each room (room) are stored.

  Next, processing performed by the CPU 21a according to the control program stored in the ROM 21c will be described with reference to the flowchart of FIG.

  When the program is started by the activation of the microcomputer 21, the CPU 21 a first determines the amount of power generated by the solar battery panel 5 measured by the watt hour meter 7 through the interface 29 and the home network 11 for each processing cycle determined by this flowchart. (Step S1), the unit area and unit generated by the solar cell panel 5 based on the amount of electric power acquired, the area of the solar cell panel 5 stored in the NVM 23, and the electric energy acquisition period in step S1. The amount of power per hour is calculated and temporarily stored in the work area of the RAM 21b (step S3). Based on the stored amount of power and the power generation efficiency of the solar cell panel 5 stored in the NVM 23, Calculate the average illuminance per unit area and unit time of sunlight irradiated to the house 1 Te, temporarily stored in the work area of the RAM 21b (step S5).

  Then, from the current calendar (year / month / day) and time managed by the clock device 25, the latitude and longitude of the house 1 stored in the NVM 23, and the calculation formula, the current altitude of the sun with respect to the house 1 and The azimuth is calculated and temporarily stored in the work area of the RAM 21b (step S7). The stored current solar altitude and azimuth, the average sunlight illuminance calculated in step S5, and the NVM 23 are stored. The average illuminance per unit time of the sunlight incident on the room from the window 1a of each room is calculated from the installation direction and the opening area of the window 1a of each room of the house 1 with respect to the house 1, and the calculated area is stored in the RAM 21b work area. Store temporarily (step S9).

  Subsequently, the illumination of each room (room) is calculated from the average illuminance per unit time of sunlight incident on the room through the window 1a of each room and the optimum illuminance for each room (room) stored in the NVM 23. The lighting device 13 provided in each room is adjusted by the corresponding light control device 15 so that the illuminance of the room (indoor) is set to the optimum illuminance by the illumination light from the device 13 and the sunlight incident from the window 1a of the room. The dimming amount of the corresponding lighting fixture 13 by each dimming device 15 for dimming is calculated, temporarily stored in the work area of the RAM 21b (step S11), and the dimming of each stored lighting fixture 13 is performed. After the amount is output to each corresponding dimming device 15 via the interface 29 and the home network 11 (step S13), the process returns to step S1.

  As is clear from the above description, in the light control system for room lighting equipment according to the present embodiment, steps S1 to S5 in the flowchart of FIG. 4 are processes corresponding to the solar radiation amount calculating means in the claims. Further, step S7 in FIG. 4 is processing corresponding to the solar position calculation means in the claims, and step S9 in FIG. 4 corresponds to the incident amount calculation means in the claims. It is processing.

  Moreover, in the light control system of the indoor lighting fixture by this embodiment, step S11 and step S13 in FIG. 4 become the process corresponding to the light control means in a claim, Furthermore, it depends on the work area of RAM21b. The temporary storage means in the claims is configured, and the non-volatile storage means in the claims is configured by the NVM 23.

  In the indoor lighting fixture dimming system according to the present embodiment configured as described above, whether the electric power stored in the power storage unit 9 is consumed by the electrical equipment in the house 1 or is sold as surplus power to an electric power company? Or the amount of power generated by the solar panel 5 is used as a basis for determining the amount of power consumed by the electrical equipment in the house 1 or sold to the power company. 7 is measured periodically.

  And if the electric energy generated by the solar cell panel 5 is periodically measured, the measured electric energy is determined by the area of the solar cell panel 5 and the measurement period of the generated electric energy by the solar cell panel 5. The unit area generated by the solar cell panel 5 and the amount of power per unit time are calculated, and from this and the power generation efficiency of the solar cell panel 5, the unit area of sunlight irradiated on the house 1 is calculated. And the average illuminance per unit time is calculated.

  Moreover, the altitude and direction of the sun with respect to the house 1 at the time of the period when the amount of electricity generated by the solar battery panel 5 is measured, the current calendar (year / month / day) and time at that time, and the latitude of the house 1 And the longitude, the altitude and direction, the unit area and the average illuminance per unit time of the sunlight irradiated to the house 1 calculated earlier, and stored in the NVM 23 The average illuminance per unit time of the sunlight incident on each room from each window 1a is calculated based on the installation direction and the opening area of the window 1a of each room of the house 1 in the room.

  In this way, when the average illuminance of the sunlight incident from the window 1a is calculated for each room, in order to match the illuminance of each room with the optimal illuminance originally set for each room, the incident light is incident from the window 1a. It is calculated how much illuminance needs to be added to the illuminance due to the sunlight to be compensated, and the lighting fixtures 13 in each room are dimmed by the corresponding dimming device 15 so as to obtain the calculated illuminance. The

  Therefore, every time the amount of power generated by the solar cell panel 5 is measured periodically, the altitude and direction of the sun with respect to the house 1 are calculated from the calendar (year / month / day) and time, etc. at that time, The average illuminance per unit area and unit time of sunlight is calculated from the amount of power generated by the solar cell panel 5 at the time, and always based on the latest solar altitude and direction and the average illuminance of sunlight, The average illuminance per unit time of sunlight entering each room from each window 1a is calculated, and the luminaire 13 is dimmed by the dimming device 15 so that the illuminance of each room becomes the optimum illuminance. .

  Thus, according to the light control system of the indoor lighting fixture according to the present embodiment, taking into account changes in the altitude and direction of the sun and the average illuminance of sunlight irradiated on the house 1 over time, Since the average illuminance of sunlight entering the room through the window 1a of the room is obtained and the dimming amount of the luminaire 13 in each room is calculated based on this, the solar light of the general structure 1 Energy-saving indoor lighting can be realized by using light and the lighting fixture 13 together.

  Moreover, according to the light control system of the indoor lighting fixture by this embodiment, while taking in the microcomputer 21 the electric power generation amount of the solar cell panel 5 measured by the watt-hour meter 7 from the home network 11, various information is received from NVM23. Since it is configured to take in the microcomputer 21 and calculate the dimming amount of the luminaire 13 in each room and output it to the dimming device 15 using these, it is not premised on the use of a special daylighting unit or light guiding path. However, it can be used to the extent that electrical wiring is applied to the existing house 1.

  In this embodiment, the home network 11 is already provided in the house 1, and the case where the power generation amount of the solar battery panel 5 measured by the watt hour meter 7 is taken into the microcomputer 21 via the home network 11. Although described, the home network 11 is not essential, and the watt-hour meter 7 may be directly connected to the interface 29 of the microcomputer 21.

  However, the home network 11 is already provided in the house 1 as in the present embodiment, and the electric power stored in the power storage unit 9 is consumed by the electric equipment in the house 1 or is supplied to the electric power company as surplus power. In order to decide whether to sell or how much power to be used, the amount of power generated by the solar panel 5 periodically measured by the watt-hour meter 7 is sent to the microcomputer 21 via the home network 11. When already configured to capture, the amount of dimming of the lighting fixture 13 is calculated as the configuration for calculating the dimming amount of the lighting fixture 13 in each room using the amount of generated power of the captured solar battery panel 5. It is not necessary to provide a configuration for taking in the power generation amount of the solar battery panel 5 from the watt-hour meter 7 to the microcomputer 21 for calculation, and the existing configuration can be used effectively.

It is a basic lineblock diagram of the light control system of the interior lighting fixture of the present invention. It is explanatory drawing which shows the schematic structure of the house which employ | adopted the light control system of the indoor lighting fixture of this invention in a partial block. FIG. 3 is a block diagram showing an electrical configuration of the dimming system of FIG. 2. It is a flowchart which shows the process which CPU of the microcomputer of FIG. 3 performs according to the control program stored in ROM.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 House 1a Window 5 Solar cell 7 Electric power generation amount measurement means 13 Lighting fixture 15 Illumination dimming means 21A Solar radiation amount calculation means 21B Solar position calculation means 21C Incident amount calculation means 21D Dimming control means 21b Temporary storage means 23 Nonvolatile memory means 25 Clock means

Claims (2)

A dimming system for an indoor lighting fixture that dims the indoor lighting fixture according to the average illuminance of sunlight entering the room from a window of a house
A power generation amount measuring means for measuring the amount of power generated by a solar cell disposed outside the house;
Receives the measurement result of the generated power amount measuring means, calculates the unit area generated by the solar cell and the power amount per unit time from the received measurement result of the generated power amount measuring means, and stores it in the temporary storage means. , Based on the amount of electric power stored in the temporary storage means, calculate the average illuminance per unit area and unit time of sunlight irradiated to the house, and store in the temporary storage means;
Based on the latitude and longitude of the house stored in advance in the nonvolatile storage means and the current calendar and time managed by the clock means 25, the current altitude and direction of the sun with respect to the house are calculated. Solar position calculating means for storing in the temporary storage means;
The installation orientation and opening area of the window stored in advance in the non-volatile storage means, and the unit area and unit time of sunlight irradiated on the house stored in the temporary storage means by the solar radiation amount calculation means The average illuminance per hit, and the current altitude and direction of the sun relative to the house, calculated by the solar position calculating means and stored in the temporary storage means when the solar radiation amount calculating means stores the average illuminance in the temporary storage means And an incident amount calculating means for calculating an average illuminance per unit time of sunlight incident on the room from the window and storing it in a temporary storage means
The unit of sunlight that enters the room from the window, which is stored in the temporary storage means by the incident amount calculation means, so that the illuminance in the room is the optimum illuminance in the room stored in advance in the nonvolatile storage means. Based on the average illuminance per hour and the optimum illuminance in the room stored in advance in the nonvolatile storage means, dimming control means for dimming the lighting fixture by the lighting dimming means,
A dimming system for indoor lighting equipment, comprising:   The said solar radiation amount calculation means is comprised so that the measurement result of the said electric power generation amount measurement means may be received via the home network which is installed in the said house and various information in this house is transmitted. Light control system for interior lighting equipment.

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