JP4784259B2 - Solar radiation shielding control device - Google Patents

Description

  The present invention relates to a solar radiation shielding control device that controls the amount of solar radiation in a room with a shielding means.

  In recent years, social demands for energy saving due to global warming have increased. In particular, energy-saving control using daylight (sunlight) is expected to be a natural energy utilization, and when daylight is introduced into a room from a window, which is a daylighting unit, it is the user's original function. It is considered effective from the viewpoint of openness and comfort for office workers because it promotes connection with the external environment. Against this background, with the recent development of control technology, solar shading control devices that automatically perform solar shading according to the state of the external environment by opening and closing the shielding means are becoming widespread. However, these solar radiation shielding control devices are intended to reduce illumination energy, and the increase or decrease in air conditioning energy due to daylight use has not been considered.

In response to such a problem, a building energy-saving control device is provided that reads the outside air temperature and the amount of solar radiation in real time, predicts lighting / air-conditioning energy by simulation, and determines an optimal blind shielding state (for example, Patent Document 1).
Japanese Patent Application Laid-Open No. 7-127897 (Gazette (1) (Structure) in the left column of the page)

  Even if the method of predicting the illumination / air-conditioning energy by simulation as disclosed in the above-mentioned Patent Document 1, there is not necessarily a single optimum solution in the actual solution space, so there are a plurality of local solutions. There are many cases to do. In particular, in a time zone where the amount of solar radiation is small or in cloudy weather, the air conditioning energy (I) and the illumination energy (II) have no effect on the blind opening as shown in FIG. Nevertheless, the balance between the flow component from the outside air and the solar radiation component becomes unstable, and the optimal solution often exists in a discontinuous state. For this reason, the blind opening / closing control becomes unstable, which may adversely affect the visual environment. In the time zone where there is no direct light or almost no direct light, as shown in FIG. 14 (b), the effect of illumination energy (II) is larger than the air conditioning energy (I) associated with the introduction of daylight. Is obvious (it is better to keep the shield open all the time). However, there is a risk that the solution may become unstable due to a rapid change in the amount of solar radiation, and there is a problem that optimization by simulation has inherent risks. Furthermore, in the time zone in which the direct light exists, the air conditioning energy (I) increases as shown in FIG. 14C, the air conditioning energy (I) and the illumination energy (II) are balanced, and the blind state is opened. There are cases where there is an optimal solution other than closed. In this region, it is considered that the control considering the balance between the air conditioning energy (I) and the illumination energy (II) is effective.

  The present invention has been made in view of the above points, and its object is to avoid a hunting operation in which the degree of opening and closing of the shielding means changes between fully closed and fully open, and adversely affects the visual environment. An object of the present invention is to provide a solar shading control device that never happens.

In order to achieve the above object, according to the first aspect of the present invention, solar radiation is provided in a target area provided with an air conditioner and a lighting device, and the incidence of sunlight in the target area is controlled by the degree of opening and closing of the shielding means. The shielding control device includes a solar radiation state acquisition unit that acquires a solar radiation state, and a control unit that adjusts an opening / closing degree of the shielding unit based on an acquisition result of the solar radiation state acquisition unit , and the horizontal axis indicates the opening / closing of the shielding unit. The relationship between the degree of opening and closing of the shielding means and the total energy consumption when the vertical axis is the total energy consumption that is the sum of the air-conditioning energy consumed by the air conditioner and the illumination energy consumed by the lighting device The region of the solar radiation amount that is convex upward is an unstable region, and the other region is a stable region. In the stable region, the degree of opening and closing that minimizes the total energy consumption is the optimum degree of opening and closing. part is, the amount of solar radiation before The opening degree of the shielding means as long as the stable region you and adjusting to the optimal opening degree.

  According to the first aspect of the present invention, it is possible to open and close the shielding means by not using an unstable region in which the relationship between the degree of opening and closing of the shielding means and the total energy consumption that occurs when the amount of solar radiation is small. A hunting operation in which the degree changes between fully closed and fully open is avoided, and the visual environment is not adversely affected.

In the invention of claim 2, in the invention of claim 1, wherein the optimal opening degree by using a data table for the opening and closing degree of the total energy consumption and the shielding means in the stable region obtained previously from e Nerugi simulation results An optimum opening / closing degree acquisition means for acquiring

  According to the second aspect of the present invention, since the optimum opening / closing degree is obtained by excluding an unstable region where the relation between the opening / closing degree and the total energy consumption is previously unstable, it is possible to quickly perform control avoiding the hunting operation.

According to a third aspect of the present invention, in the second aspect of the invention, the optimum opening / closing degree acquisition means extrapolates a relationship between the optimum opening / closing degree and the total energy consumption in the stable region based on a result of statistical processing. The optimum opening / closing degree in the unstable region is obtained using the obtained value.

According to the invention of claim 3, since the boundary between the unstable region and the stable region is smoothly connected , natural open / close degree control can be performed also for the unstable region.

According to a fourth aspect of the present invention, in the first aspect of the invention, there is provided an optimum opening / closing degree acquiring means for acquiring, as the optimum opening / closing degree , the maximum opening / closing degree at which the total energy consumption is minimum and no glare occurs in the unstable region. It is characterized by having.

  According to the invention of claim 4, since it can be controlled so as to perform daylighting in a state where the illuminance that becomes an unstable region is low, it is possible to satisfy the demand of an indoor person who wants to look outside.

In the invention of claim 5, in any one of the claims 1 to 4, wherein the optimal opening degree obtaining means, when the change of the solar irradiation is greater than a predetermined maximum change amount, the said solar irradiation The optimum opening / closing degree is obtained by limiting to a value obtained by adding the maximum change amount to a solar radiation state.

  According to the invention of claim 5, when a large change in the solar radiation state occurs in which the sun is hidden in the clouds, it is possible to moderately control the opening / closing degree of the shielding means to suppress a rapid change in the visual environment. .

  The present invention does not use an unstable region where the relationship between the degree of opening and closing and the total energy consumption that occurs when the amount of solar radiation is small, and the degree of opening and closing changes between fully closed and fully opened. There is an effect that it is possible to provide a solar radiation shielding control device that avoids the hunting operation and does not adversely affect the visual environment.

Embodiments of the present invention will be described below.
(Embodiment 1)
FIG. 2 shows a part of a building equipped with the solar radiation shielding device of the present invention, and a window portion W is opened as a daylighting portion on the wall of the building, and the window portion W has a Venetian blind (hereinafter referred to as a blind). ) Illuminance for detecting the illuminance of the lighting device 2 of the lighting system and the upper surface (desk upper surface) of the desk D arranged in the target area X on the ceiling CE of the target area X that is equipped with shielding means 1 and indoors a sensor 3, an outlet 4 of the air conditioning system, the temperature and humidity sensor 5 for detecting the target area X of the air-conditioning environment (temperature and humidity) is provided. Moreover, in order to acquire the solar radiation state, an illuminometer (or a solar radiation meter for measuring the amount of solar radiation) 6 provided at an appropriate place on the roof or the like for measuring the vertical surface illuminance in each direction is provided. As the shielding means, for example, a smart window, a roll screen, or the like that performs shielding by changing the light transmittance by controlling the energization of the liquid crystal sheet interposed between the glass plates may be used.

The air conditioning system includes an air conditioner 8 provided in a machine room and the like, a variable air volume unit 9 provided on the back of the ceiling CE, and the temperature / humidity sensor 5 that detects the air conditioner 8 and the variable air volume unit 9. It is comprised with the air conditioning Icont (Intelligent Controller) 7 controlled based on humidity. The illumination system includes an illumination Icont 10 that controls the light output of the illumination device 2 with a dimming function based on the detected illuminance of the illuminance sensor 3.

  The solar radiation shielding device of the present embodiment includes a blind 1, an illuminometer (or solar radiation meter) 6, and a blind Icont 11.

  And the measurement icon 16 that collects information from each of the icons 7, 10, 11 and the illuminance meter (irradiance meter) 6 is connected to a floor integrated controller 17 that constructs a host system for integrating and controlling the environment of the entire building. For this connection, for example, a dedicated transmission line for building automation is used, and information can be exchanged by a signal of a predetermined standard.

As shown in FIG. 1, the blind Icont 11 that is the center of the solar radiation shielding control device of the present embodiment includes a solar radiation state acquisition unit 12, an operation mode acquisition unit 13, an optimum opening / closing degree acquisition unit 14, and a control unit 15. The solar radiation state acquisition unit 12 is configured to acquire the current time by a system timer (not shown), and based on the location conditions (latitude and longitude of the installation location) of the target building Direct solar radiation from a function as a solar position acquisition means for calculating a position, a function of acquiring vertical illuminance in each direction from the illuminometer 6 at intervals of, for example, 1 minute, and a solar position state and an illuminance measured by the illuminometer 6 It has a function as a direct light judgment means for judging the presence or absence of light and a function as a weather judgment means for judging the weather from the solar altitude and the vertical surface illuminance. A solar radiation meter may be provided instead of the illuminometer 6 to convert the measured solar radiation amount into illuminance. Further, the illuminance information may be acquired through the measurement icon 16 and the floor integrated controller 17.

  The operation mode acquisition unit 13 acquires the operation mode (cooling / heating) of the air conditioner 8 via the air conditioning Icont 7 and the floor integrated controller 17.

Optimal opening degree acquiring unit 1 4, the opening degree of the blind 1, the energy simulate illumination amount of energy the air conditioner 8 based on the solar irradiation consisting acquired illumination and solar position is consumed air conditioning energy and the illumination device 2 for consumption To calculate in real time. However, the degree of opening and closing of the blind 1 is the degree of opening and closing that can be operated within the range in which the blind 1 operates. For example, the blind 1 is composed of a blind that can operate in increments of 1 ° within a slat angle of 0 ° to 90 °. In this case, 0 °, 1 °, 2 °, 3 °,..., 90 °.

The optimum opening degree acquiring unit 1 4, total energy consumption is the sum of the calculated air-conditioning energy and lighting energy by simulation to determine the opening degree of the blind 1 to be minimized.

The control unit 15 is optimal opening degree obtaining section 1 blind 1 of closed degree obtained in 4, in the case of outside fully opened and all閉以treated as optimal solution unconditionally, controlled by opening and closing of the blind 1. The opening and closing of the blind 1 obtained in the optimal opening degree obtaining section 1 4, in the case of fully open or fully closed is the glare is less than the reference value that is predetermined range and direct light in the target area X It controls the opening and closing of the blind 1 to maintain in the direction to open the blind 1 of closed degree within a range not incident. This is because the view from the window W is given priority in the time zone where the optimal degree of opening and closing is in the fully open or fully closed state and the amount of solar radiation is low, since the expectation of energy saving is small. Note the control unit 15 when controlling the opening degree of the blind 1 compares the opening degree of the optimum blind 1 obtained in the optimal opening degree obtaining section 1 4, and the opening degree of the past blind 1, set A process for determining the optimum degree of blind opening / closing is performed while restricting the blind 1 so as not to change beyond the value. That is, when the change in the amount of solar radiation is larger than a predetermined maximum amount of change, the optimal degree of opening and closing is obtained by limiting the amount of solar radiation to a value obtained by adding the maximum amount of change to the amount of solar radiation.

  Next, the operation of this embodiment will be described based on the flowchart of FIG.

First, when the solar radiation shielding control device is started, the solar radiation state obtaining unit 12 of the blind icon 11 obtains the current time at intervals of 10 to 30 (minutes) from the system timer (step S1), and is registered in advance as this current time. Or the current position of the sun T based on the position information of the installation location of the device acquired from the GPS or the like and the positional relationship of the window W facing the target area X (step S2). ). In this step S2, the solar position is calculated by first calculating the solar altitude and the solar azimuth by an appropriate known calculation method based on the latitude and longitude of the building and the current time. Next, the incident angle to the window W surface and the apparent altitude (the altitude obtained by correcting the solar altitude in the direction perpendicular to the window surface) are calculated as the positional relationship of the window W. Here, as shown in FIG. 4 (a), the incident angle of the window surface is the incident angle to the window surface when the current solar altitude is h [°], the azimuth angle is A [°], and the window surface direction A0. i ′ is i ′ = cos−1 [cos (h) × cos (A−A0)].
It becomes.

The apparent height h ′ is h ′ = arc tan [tan (h) / cos (A−A0)].
It becomes. In FIG. 4A, E, W, S, and N indicate the directions of east, west, south, and north, and Z indicates the vertical direction.

  The solar radiation state acquisition unit 12 determines whether there is direct light on the window surface from the calculated incident angle i ′ to the window surface. In this case, as shown in FIG. 4B, a range β where the direct light is incident on the target area X and a range γ where the direct light is not incident are determined from the position of the sun T and the length L of the ridge on the window W side, and the area For example, a process of determining whether or not direct light is incident on the field of view of the person M working at the desk D from the position and direction of the desk D in A is performed.

  As described above, when the solar radiation state acquisition unit 12 acquires the time, calculates the solar position, determines whether the direct light is incident, and further determines the weather, the operation mode acquisition unit 13 performs the operation of the air conditioner 8 in the next step S3. The operation mode, that is, whether the heating operation or the cooling operation is in progress is acquired.

The optimal opening degree obtaining section 1 4 in Step S4 performs the determination of the opening and closing of the blind 1 to be energy saving by energy simulation described below, the determination of inhibiting opening degree glare by environmental simulation.

These simulations may be performed by using a well-known method (for example, Masanori Sukutani, architecture and environmental studies of light and heat learned by numerical calculation, “Window and natural room illumination” published by Maruzen Co., Ltd.). FIG. 5 shows an example thereof. In this method, a database DB storing characteristics of a building window W, air conditioning environment, lighting (including lighting fixture arrangement information), and target area (room) X is provided. Based on the information in this database DB, preparation for air conditioning and illumination energy prediction is performed in building model construction, the current time and vertical surface illuminance are taken in from the above-mentioned solar radiation state obtaining unit 12, and the air conditioner from the operation mode obtaining unit 13 8 is acquired (step S11), and in the loop of steps S12 to S17, the energy saving optimum state candidate is obtained by performing a simulation while changing the slat angle by, for example, 1 ° in a range of 90 ° to 0 °.

  In this loop, in step S13, prediction of illumination energy, that is, prediction of desk surface illumination by external light and prediction of illumination energy consumed by the lighting device 2 are performed. On the other hand, in step S14, the air conditioning energy is predicted, that is, the solar heat due to the external light is predicted, and the air conditioning energy including heat generation of the lighting device 2 is predicted. In this case, the prediction information of the illumination energy in step S13 is used for prediction of heat generation of the lighting device 2. After the illumination energy is predicted, the glare state is predicted by environmental simulation in step S15.

  Here, the glare feeling is predicted by the environmental simulation in order to consider the glare feeling in the degree of opening and closing of the blind 1, and the window surface / blind surface / wall surface obtained as a temporary variable for calculating the lighting energy. The glare sensation is predicted from a prediction formula PGSV (Predicted Glare Sensation Vote) using the luminance reflected by the lens. This PGSV is proposed as a formula that predicts the feeling of glare when using daylight (Tokura, Iwata et al .: “Experimental study on the evaluation method of glare caused by daylight from windows, Part 1 Using the light environment laboratory” ”, The Architectural Institute of Japan Conference Abstract, 19922.8), a formula that associates the light source against the window surface with the brightness of the background and the glare of the occupant (see the formula 1). >.

Lb: background luminance [cd / m ² ]
Lseq: equivalent uniform luminance (light source luminance) [cd / m ² ]
ω: solid angle of light source [sr]
However, PGSV is an index originally proposed for optimal design of windows, and there is no example used for controlling the degree of opening and closing of blinds.

  Thus, the predicted PGSV and the set PGSV value are compared in step S15, and the opening / closing degree of the blind 1 is determined so as to be smaller than the set PSVG value. Table 1 shows an example scale of PGSV.

  In the present embodiment, as the light source luminance, the sky luminance passing through the window W and the average value of the luminance generated by reflecting the slat surface of the blind 1 are used, and the luminance of the surrounding wall surface and ceiling surface is used as the background luminance. Use.

  When the prediction in steps S15 and S14 ends, the energy sum of the air conditioning energy and the illumination energy is calculated in step S16. FIG. 6 shows the relationship between the air conditioning energy (I), the illumination energy (II), and the degree of opening / closing of the blind 1.

  When the prediction of the energy saving optimum state candidates and the calculation of the energy sum for all the slat angles are finished and the loop is exited, the calculation of the opening / closing degree of the blind 1 that saves energy in step S18, that is, the outside world (outdoor state) ) And the degree of opening / closing of the blind 1 corresponding thereto, and in the next step S19, calculation of the degree of opening / closing where the glare feeling is below the reference, that is, the outside state and the degree of opening / closing of the corresponding blind 1 are calculated. At the same time, the calculated opening / closing degree is transferred to the control unit 15. In step S4 of FIG. 3, the control unit 15 performs hunting processing for the optimum opening / closing degree of the blind 1. In other words, the control unit 15 compares the passed degree of opening and closing with the past degree of blind opening and closing, and is optimal while restricting the degree of opening and closing of the blind 1 so that it does not change beyond a predetermined set value. The opening / closing degree of the blind 1 is determined, and the angle control of the slat 1a of the blind 1 is performed.

The optimal opening degree of the determination operation in the control unit 15 will be described with reference to the flowchart of FIG.

First, in step S21, it is determined whether the blind optimum opening / closing degree is fully open or fully closed. When the degree of blind open / close is not fully open or fully closed, direct light incident determination of the solar radiation state acquisition unit 12, that is, direct light is slat 1a of blind 1. In step S22, the result of determination as to whether or not the object is transmitted through the space is checked in step S22. If direct light is not incident, the open / closed degree is adopted as the optimum solution (step S23). When the direct light is incident, an opening / closing degree at which the direct light is not incident is adopted (step S24). On the other hand, when the blind optimum opening / closing degree is fully open or fully closed, an opening degree with a glare feeling equal to or less than the reference is acquired (step S25), and the direct sunlight incident determination of the solar radiation state acquisition unit 12 with respect to the acquired opening degree is When the direct light is not incident, the acquired opening / closing degree is adopted (step S26), and when the direct light is incident, the opening / closing degree at which the direct light is not incident is adopted (step S24). Fully open or fully closed is when the amount of solar radiation is low or when it is cloudy, and there is little expectation of energy saving, and it is expected that priority will be given to the view through the window. and direct light is to employ to keep in the direction to open the opening and closing of the blind 1 in a range without incident.

Now , comparing the degree of opening / closing employed as described above with the past degree of opening / closing, a restriction is applied so that the degree of opening / closing of the blind 1 does not change to a predetermined set value or more (step S28), and the optimum degree of opening / closing is determined. (Step S29), the angle control of the slat 1a of the blind 1 is performed based on the optimum opening / closing degree.

FIG. 8 (a) shows the air conditioning energy (I), illumination energy (II), and total energy <when the blind 1 is in the cooling mode and the amount of solar radiation is large (sunny state) when the blind 1 is fully open or not fully closed (Position). It shows the relationship of total energy consumption> (III). In the case of clear weather, changing the degree of opening and closing of the blind 1 from fully closed to fully opened, the illumination energy (II) gradually decreases, and conversely the air conditioning energy (I ) Becomes larger. Fig. 2 (b) shows the air conditioning energy (I), lighting energy (II), and total energy (III) when the blind 1 is fully open (in the position) in the cooling mode when the amount of solar radiation is small. In this case, even if the opening / closing degree of the blind 1 changes, there is almost no change in energy. FIG. 5C shows a case where the blind 1 is fully opened (o) when the solar radiation amount is somewhat in the cooling mode.
(Embodiment 2)
In the first embodiment, the optimum opening / closing degree acquisition unit 14 performs simulation in real time and acquires the evaluation index from the result. In this embodiment, however, the installation distributed by AMeDAS <Automated Meteorological Data Acquisition System> of the Japan Meteorological Agency Using the energy simulation device 18 composed of a computer or the like in advance as shown in FIG. 9, using the weather data of the area corresponding to the place (data relating the time and amount of solar radiation (illuminance)) as shown in FIG. It is characterized in that an energy simulation is performed to determine the optimum opening / closing degree. Specifically, the amount of solar radiation in the weather data, the solar position calculated from the date and time of the weather data, and the air conditioning energy consumed by the air conditioner 8 and the lighting energy consumed by the lighting device 2 for the degree of opening and closing of the blind 1 Is calculated in advance. The opening / closing degree of the blind 1 is an opening degree that can be operated within the range in which the blind 1 operates as in the case of the first embodiment. For example, the blind 1 has a slat angle of 0 ° to 90 °, 1 °. In the case of a blind that can be operated in steps, 0 °, 1 °, 2 °, 3 °,..., 90 °. Then, the degree of opening and closing of the blind 1 that minimizes the total energy consumption, which is the sum of the air conditioning energy and the lighting energy calculated by the prior simulation, is determined, and the relationship between the amount of solar radiation and the degree of opening and closing of the blind 1 is saved. The degree of opening / closing of the blind 1 of energy and the degree of opening / closing of the blind 1 in consideration of the glare are stored in the optimum opening / closing degree table TB attached to the blind Icont 11, and these are repeated for several days of data. Here, an area where the degree of opening / closing of the blind 1 stored in the optimum degree-of-opening / closing degree table TB is not fully open or fully closed is a stable area, and an area where it is not present is an area where the total amount of solar radiation is at least the minimum value. It is defined as an unstable region.

  FIG. 10 shows a simulation flow of the energy simulation device 18. The difference from the simulation in the first embodiment is that the energy saving optimization calculation is performed between step S10 and step S12 instead of step S11 in the flowchart of FIG. Step S100 is prepared, and instead of Step S19, Step S101 is written in the optimum degree-of-opening / closing degree table TB to write the degree of opening / closing in consideration of the amount of irradiance (illuminance), the degree of opening / closing of the energy-saving blind 1, and the glare. A loop for the annual simulation at each time (steps S102 to S103) is formed between step S100 and step S101, and the prediction of the illumination energy (step S13) and the prediction simulation of the air conditioning energy (S14) It lies in the use of data (time and solar radiation (data related illuminance) DA).

  Thus, when the solar radiation shielding control device is in operation, the optimum opening / closing degree acquisition unit 14 of the blind Icont 11 has an optimal opening / closing degree table when the current amount of solar radiation (illuminance) acquired by the solar radiation state acquisition unit 12 exists in the stable region. An optimum opening / closing degree for energy saving corresponding to the safe area is adopted in the TB data. Further, when located in an unstable region, the degree of opening and closing is adjusted and adopted so that direct light does not enter or the glare feeling is below a reference value.

  As for the unstable region, as shown in FIG. 11 (b), the stable region data in the circled circle shown in FIG. 11 (a) is statistically processed with the total energy consumption. Create a regression formula between the amount of solar radiation and the optimal degree of opening and closing, and if there is an amount of solar radiation in the unstable region, refer to the regression formula to determine the optimal degree of opening and closing for energy saving. Also good. In this case, no special processing is added to the relationship between the amount of solar radiation and the optimum degree of opening / closing with respect to the degree of opening / closing taking glare into account.

Thus, the control unit 15 compares the opening / closing degree of the blind 1 adopted and determined by the optimum opening / closing degree acquisition unit 14 with the past opening / closing degree of the blind, as in the first embodiment, and is set in advance. The angle control of the slats 1a of the blind 1 is performed with the optimum degree of opening and closing while limiting the degree of opening and closing of the blind 1 so as not to change beyond the value. Note that when control is performed using the relational expression between the amount of solar radiation and the degree of opening and closing of the blind 1, it may be sensitive to changes in the amount of solar radiation, so the past illuminance and its illuminance are centered as shown in FIG. ± α [lux] as a dead zone for the conversion of grandfather degree, and control may not be performed when the dead zone exists in this dead zone.
(Embodiment 3)
Although the information exchange between each Icont7,10,11,16 and floor integrated controller 17 using the transmission lines dedicated building automation In Embodiments 1 and 2 in line Migihitsuji, in the present embodiment, as shown in FIG. 13 Are connected using a LAN 19 using Ethernet (registered trademark). For example, a Web server is installed in the blind icon 11, and an HTTP (HyperText Transfer) is transmitted from a personal terminal PC including a personal computer connected to the LAN 19 or the panel switch device PS. Protocol) can be used to access the Web server and browse the home page on the Blind Icon 11 side provided by the Web server. For example, the operating status of the Blind Icon 11 can be changed from the personal terminal PC or the panel switch PS. And Heather is can be freely set the glare level.

  In the first to third embodiments described above, the case where the blind 1 made of the Venetian blind is used has been described. However, the present invention can also be applied to a smart window or other blind that can adjust the degree of opening and closing.

  By the way, by using a device-embedded network technology called EMIT (Embedded Micro Internetworking Technology) (a network technology having a function of easily incorporating middleware into a device and connecting to the network, hereinafter referred to as EMIT technology). Various equipment (lighting devices, air conditioners, power devices, sensors) from external terminals (not shown) such as mobile phones, PCs (Personal Computers), PDAs (Personal Digital Assistants), PHSs (Personal Handy phone Systems) Electric locks, Web cameras, etc. are hereinafter referred to as EMIT terminals.) There is a system that can access <not shown> to remotely monitor and control the EMIT terminal.

  Note that the EMIT terminal is a built-in device equipped with a microcomputer, and is a device-embedded middleware for connecting to the network and is equipped with EMIT software that realizes the EMIT technology.

  As a system to which the above-mentioned EMIT technology is applied (hereinafter referred to as an EMIT system), an external terminal remotely monitors and controls an EMIT terminal via a center server (not shown) provided on the Internet. For example, a configuration in which an EMIT terminal is directly accessed from an external terminal equipped with EMIT software to remotely monitor and control the EMIT terminal without using a center server.

  Then, by using the EMIT system, for example, the above-mentioned EMIT terminals are distributed in a building (for detached houses, condominiums, buildings, factories, etc.) <not shown>, and the status of the EMIT terminals is monitored remotely from an external terminal. This makes it possible to perform energy management of the entire building and remote meter reading of gas, water, and electricity in the building.

  Therefore, the above-described solar radiation shielding control apparatus according to the first to third embodiments of the present invention may be configured using the above-described EMIT system.

It is a block diagram of blind Icont of Embodiment 1. 1 is a schematic configuration diagram of Embodiment 1. FIG. 3 is a flowchart for explaining the operation of the first embodiment. (A) is calculation explanatory drawing of the solar position used in Embodiment 1, (b) is a related explanatory drawing of the sun and a window surface. 3 is a flowchart for explaining an operation of an optimum opening / closing degree acquisition unit according to the first embodiment. It is a relationship explanatory drawing of the air-conditioning energy and illumination energy of Embodiment 1, and the opening-and-closing degree of a blind. 3 is a flowchart for explaining an operation of blind opening / closing degree control according to the first embodiment. FIG. 5 is an explanatory diagram of a relationship among air conditioning energy, illumination energy, total energy, and blind opening in the state of the opening / closing degree of the blind according to the first embodiment. It is a block diagram of blind Icont used for Embodiment 2. FIG. 10 is a flowchart of a simulation for determining an optimum opening / closing degree according to the second embodiment. FIG. 10 is an operation explanatory diagram of an optimum opening / closing degree acquisition unit of the second embodiment. FIG. 9 is an operation explanatory diagram of a control unit according to the second embodiment. FIG. 9 is a system configuration diagram of a third embodiment. It is explanatory drawing of a prior art example.

Explanation of symbols

1 Blind 6 Illuminance Meter 8 Air Conditioner 11 Blind Icont
12 Solar radiation state acquisition unit 13 Operation mode acquisition unit 14 Optimal opening / closing degree acquisition unit 15 Control unit

Claims (5)

In a solar radiation shielding control device that is provided in a target area provided with an air conditioner and a lighting device, and controls the incidence of sunlight in the target area by the degree of opening and closing of the shielding means,
A solar radiation state acquisition unit for acquiring the solar radiation state, and a control unit for adjusting the degree of opening and closing of the shielding means based on the acquisition result of the solar radiation state acquisition unit ,
When the horizontal axis is the degree of opening and closing of the shielding means, and the vertical axis is the total energy consumption that is the sum of the air conditioning energy consumed by the air conditioner and the lighting energy consumed by the lighting device, the degree of opening and closing of the shielding means The solar radiation amount region where the relationship with the total energy consumption is convex upward is defined as an unstable region, and the other region is defined as a stable region. In the stable region, the degree of opening and closing at which the total energy consumption is minimized The optimal opening and closing degree,
If the amount of solar radiation is the said stable region, the said control part will adjust the opening / closing degree of the said shielding means to the said optimal opening / closing degree, The solar radiation shielding control apparatus characterized by the above-mentioned . Further comprising an optimum opening degree acquiring means for acquiring the optimal opening degree with the in the stable region that previously obtained from d Nerugi simulation results and the total energy consumption of the data table and the opening and closing degree of the shielding means The solar radiation shielding control device according to claim 1, wherein The optimum opening / closing degree acquisition means uses the value obtained by extrapolating the relation between the optimum opening / closing degree and the total energy consumption in the stable region based on a result of statistical processing, and uses the optimum opening / closing degree in the unstable region. The solar radiation shielding control device according to claim 2, wherein the degree is acquired . 2. The solar radiation according to claim 1 , further comprising: an optimum opening / closing degree obtaining unit that obtains, as the optimum opening / closing degree , the largest opening / closing degree at which the total energy consumption is minimum and no glare occurs in the unstable region. Shielding control device. The optimum opening degree obtaining means, when the change of the solar irradiation is greater than a predetermined maximum change amount, the optimal opening degree of the solar irradiation is limited to the value obtained by adding the maximum variation in the solar irradiation The solar radiation shielding control device according to any one of claims 1 to 4, wherein the solar radiation shielding control device is obtained.

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