JP2012132194A - Energy-conservation control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an energy-conservation control device that can further improve the energy efficiency when an energy-conservation control using introduction of daylight is performed.SOLUTION: With a plurality of slats installed alongside at an opening part of a building, a cooperative control unit U0 controls a blind that is configured so that the vertical positions of the slats and the rotation angle of the slats can be freely adjusted. The cooperative control unit U0 comprises a control part 11 that performs ascending/descending control for controlling the vertical positions of the slats and opening/closing control for controlling the rotation angle of the slats, so as to control the vertical positions of the slats and the rotation angle of the slats in such a manner that the sum of the respective consumption energies of a lighting load and an air conditioning load in the building is suppressed by using an incoming light coming into the inside of the building through the blind.

Description

  The present invention relates to an energy saving control device.

  In recent years, social demands for energy saving have increased due to environmental concerns such as global warming. In particular, energy-saving control using the introduction of daylight (Nikko) is highly expected as a natural energy utilization. With this background, with the recent development of control technology, blind control devices that automatically perform solar shading according to the state of the external environment by opening and closing control of blind slats are becoming widespread (for example, Patent Document 1). reference).

  In the energy saving control system using such a blind control device, as shown in FIG. 12, a blind control unit U101, an air conditioning control unit U102, and a lighting control unit U103 are connected to each other via a network NT101. Has been. An open protocol such as BACnet is used for the network NT101. The blind control unit U101 controls the opening / closing operation of the blind K101 disposed in the window W101 of the building H101. Further, the air conditioning control unit U102 controls the operation of the air conditioning load K102 in the building H101, and the lighting control unit U103 controls the operation of the lighting load K103 in the building H101.

  And the control system of the blind K101 aiming at total energy saving has been developed especially considering the total amount of energy consumed by the air conditioning load K102 and the lighting load K103 in the building H101. In such a control method, since fine adjustment of the amount of light taken in via the blind K101 is required, the rotation angle of the slat S is controlled rather than the lift control that controls the lift position of the slat S of the blind K101. Open / close control has been prioritized. Further, as a factor in which the opening / closing control is given priority over the lifting / lowering control, an unpleasant operation sound is generated during the lifting / lowering operation of the slat S.

  Thus, in the conventional blind control unit U101, the opening / closing control shown in FIG. 13 is generally performed in a state where the slat S is completely rolled down. FIG. 13 shows the basic logic of the open / close control when the air conditioning load K102 in the building H101 is performing a cooling operation. When the air conditioning load K102 in the building H101 is performing a cooling operation, if the outdoor illumination is high (if it is bright), the rotation angle of the slat S (hereinafter referred to as the slat angle) in order to avoid excessive energy consumption of the cooling load K103. ) Is controlled in the “closed” direction. On the other hand, if the outdoor illuminance is low (if it is dark), the slat angle is controlled in the “open” direction in order to actively incorporate daylight and assist the energy consumption of the lighting load K103.

JP 2009-52255 A

  In recent years, where energy conservation is a top priority, even a slight improvement in energy efficiency is required. Therefore, it is desirable to wind up the blind slats in the morning when the solar radiation is weak in the summer and to take in the daylight in the winter, or to capture the daylight in the winter when the sunlight is strong. .

  However, in the prior art, when performing energy saving control utilizing the introduction of daylight, as described above, it is common that only the opening / closing control is performed in a state where the slats are completely rolled down, which further increases energy efficiency. Improvement was desired.

  Moreover, although there exist some which perform energy saving control using only raising / lowering control like a roll screen, the improvement of energy efficiency was difficult.

  This invention is made | formed in view of the said reason, The objective is to provide the energy-saving control apparatus which can further improve energy efficiency, when performing energy-saving control using introduction of daylight. is there.

  An energy-saving control device according to the present invention is an energy-saving control device that controls a blind configured such that a plurality of slats are juxtaposed in an opening of a building, and the raising / lowering position of the slats and the rotation angle of the slats are adjustable. , Elevating control for controlling the elevating position of the slat and opening / closing control for controlling the rotation angle of the slat, and using the incident light incident on the building through the blind, the lighting load in the building and It has a control part which controls the raising / lowering position of the said slat and the rotation angle of the said slat in the direction which controls the sum of each consumption energy of an air-conditioning load.

  In this invention, the illuminance acquisition part which acquires the detection result of the illuminance outside the building, the height information storage part which stores the height information which registered the correspondence between the illuminance outside the building and the lift position of the slat, An angle information storage unit that stores angle information in which the correspondence between the illuminance outside the building and the rotation angle of the slat is registered according to the lift position of the slat, and the lift position of the slat in the height information Is set to a lift position that can suppress the sum of the energy consumption of the lighting load and air conditioning load in the building when the illumination is outside the corresponding building, and the rotation angle of the slat in the angle information corresponds to When the illuminance is outside the building, the rotation angle is set so that the sum of the energy consumption of the lighting load and the air conditioning load in the building can be suppressed, and the control unit refers to the height information. Then, based on the illuminance outside the building acquired by the illuminance acquisition unit, the lift position of the slat is determined, and the lift position of the slat and the illuminance acquisition unit acquired by referring to the angle information The rotation angle of the slat is preferably determined based on the illuminance outside the building.

  In this invention, the height information storage unit stores the height information corresponding to each of the cooling operation of the air conditioning load and the heating operation of the air conditioning load, and corresponds to the cooling operation of the air conditioning load. As the illuminance outside the building increases, the height information sets the raising / lowering position of the slat low, and the height information corresponding to the heating operation of the air conditioning load increases as the illuminance outside the building increases. The elevating position of the slat is preferably set high.

  In this invention, when the illuminance outside the building fluctuates and the slat is moved up and down and the rotation angle is changed, the control unit changes the illuminance outside the building for a first predetermined time or more. The elevation position of the slat is determined with reference to the height information, and when the illuminance fluctuation state outside the building continues for a second predetermined time or longer, the angle information is A rotation angle is determined, and the first predetermined time is preferably longer than the second predetermined time.

  In the present invention, the first predetermined time is set corresponding to each of a hoisting operation for raising the raising / lowering position of the slat and a lowering operation for lowering the raising / lowering position of the slat, and corresponds to the hoisting operation. It is preferable that the first predetermined time to be longer than the first predetermined time corresponding to the lowering operation.

  In this invention, a solar position calculation unit for calculating the locus of the solar position, and a range in which direct sunlight from the sun irradiated into the building through the opening reaches the inside of the building, and this irradiation range When the horizontal distance from the opening is the incident distance, the incident distance information storage unit that stores information on the maximum allowable distance of the incident distance and the path of the sun position until a predetermined time elapses from now A direct radiation prevention data generation unit that calculates an upper limit of the raising / lowering position of the slat that makes the incident distance within the maximum allowable distance over a period of time, and the control unit raises / lowers the slat during the raising / lowering control Is preferably set to the upper limit of the elevating position calculated by the direct sunlight prevention unit.

  In this invention, it comprises an operation history storage unit for storing a change history of the raising / lowering position of the slat by an operation of an operation unit in which a user operation for changing the raising / lowering position of the slat is performed, and the control unit includes the slat It is preferable that the upper limit of the lift position of the slat during the lift control is set to the lowest lift position of the slat set by the operation of the operation unit in the past predetermined period based on the fluctuation history of the lift position. .

  In this invention, it is preferable to provide an operation unit in which a user operation is performed to switch at least one of the elevation control and the opening / closing control by the control unit to be valid or invalid.

  As described above, the present invention has an effect that the energy efficiency can be further improved when performing energy saving control using the introduction of daylight.

It is a block diagram which shows the structure of the cooperative control apparatus of Embodiment 1. It is a block diagram which shows the structure of the energy saving control system using a cooperation control apparatus same as the above. It is a top view which shows schematic structure of the building which installed the energy saving control system same as the above. It is a graph which shows the conventional total power consumption. (A) is a graph which shows the total power consumption of Embodiment 1, (b) is the schematic which shows the control content of the raising / lowering control and opening / closing control same as the above. It is a flowchart figure which shows the blind control by a cooperative control unit same as the above. It is the schematic which shows incident distance information same as the above. (A) (b) It is a characteristic view which shows each height information at the time of air_conditionaing | cooling and heating. (A)-(c) It is a characteristic view which shows the angle information at the time of air_conditioning | cooling. (A)-(c) It is a characteristic view which shows the angle information at the time of heating. It is a block diagram which shows the structure of the cooperative control apparatus of Embodiment 3. It is a block diagram which shows the structure of the conventional energy saving control system. It is a characteristic view which shows the relationship between the conventional outdoor illumination intensity and a slat angle.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
FIG. 2 shows a configuration of the energy saving control system of the present embodiment, in which a blind control unit U1, an air conditioning control unit U2, and a lighting control unit U3 are connected via a network NT1 so as to communicate with each other. Further, the cooperative control unit U0 is connected to the network NT1, and the cooperative control unit U0 is configured to be able to communicate with the blind control unit U1, the air conditioning control unit U2, and the lighting control unit U3 via the network NT1. . An open protocol such as BACnet is used for the network NT1.

  FIG. 3 illustrates a schematic configuration of an office building as the building H1 in which the energy saving control system is installed. This building H1 is located at a latitude of 31 degrees and a longitude of 121 degrees, and has a rectangular shape of 57 (m) × 21 (m), and windows W1A and W1B on the south and east sides (hereinafter not distinguished) Is referred to as a window W1).

  First, the blind control unit U1 controls the raising / lowering operation and the opening / closing operation of the blind K1 arranged in the window W1. The air conditioning control unit U2 controls the air conditioning operation of the air conditioning load K2 in the building H1, and is controlled to a predetermined cooling temperature (for example, 26 ° C.) and heating temperature (for example, 22 ° C.) by a central air conditioning system. The lighting control unit U3 is configured to control the lighting operation of the lighting load K3 in the building H1 so that the lighting load K3 (for example, rated 500 (lx)) can be dimmed.

  The cooperative control unit U0 corresponds to an energy saving control device, and monitors and controls each control state of subordinate loads by the blind control unit U1, the air conditioning control unit U2, and the lighting control unit U3. Then, the cooperative control unit U0 determines the raising / lowering operation of the blind K1, the opening / closing operation, the air conditioning operation of the air conditioning load K2, and the lighting operation of the lighting load K3 so that the entire system can save energy. The blind control unit U1, the air conditioning control unit U2, and the lighting control unit U3 perform control of the subordinate blind K1, the air conditioning load K2, and the lighting load K3 in accordance with instructions from the cooperative control unit U0.

  In the present embodiment, the control of the blind K1 by the cooperative control unit U0 will be described in detail below.

  First, the coordinated control unit U0 performs both the up / down control for controlling the raising / lowering position of the slat S of the blind K1 and the opening / closing control for controlling the rotation angle of the slat S (hereinafter referred to as the slat angle) according to the outdoor illuminance. Has the function to perform.

  As shown in FIG. 2, the blind K1 is disposed in the window W1 (opening) of the building H1. The blind K1 supports a plurality of slats S arranged in the vertical direction, and the slats S are driven up and down and opened and closed by driving means (not shown) such as a lifting motor and an opening and closing motor.

  FIG. 4 shows the result of evaluating the effect of the raising / lowering position of the blind K1 on the sum of energy consumed by each of the air conditioning load K2 and the lighting load K3 (total power consumption) by simulation. The total power consumption is a value when the air conditioning load K2 and the lighting load K3 are controlled so that the user in the building H1 feels comfortable under the respective conditions of outdoor illumination, control of elevation control, and opening / closing control. . For example, the air conditioning load K2 is controlled to a cooling temperature: 26 ° C. and a heating temperature 22 ° C., and the lighting load K3 is controlled to a dimming level that can sufficiently secure the brightness in the building H1.

  In FIG. 4, characteristics Y11 (thin solid line) and Y21 (thin solid line) indicate the total power consumption in the conventional blind control based on the assumption of the complete lowering position during cooling and heating. In the conventional blind control, the raising / lowering position of the slat S is maintained in the fully lowered state where the slat S is lowered to the lowest position, and the slat angle of the slat S is controlled according to the outdoor illuminance. Also, the characteristics Y12 (broken line) and Y22 (broken line) in FIG. 4 indicate the total power consumption when the lifted position of the slat S is maintained at the highest hoisted state during cooling and heating. Indicates. Also, the characteristic Y13 (dashed line) in FIG. 4 indicates that the total power when the slat S is raised and lowered to the middle position in the half-winding state and the slat angle is kept closed during cooling. Indicates consumption.

  The total power consumption indicated by the characteristics Y11 to Y13 during cooling decreases as the outdoor illuminance increases in the low outdoor illuminance region, and increases as the outdoor illuminance increases in the middle to high outdoor illuminance region. To do. In addition, the total power consumption indicated by the characteristics Y21 and Y22 during heating decreases sharply with an increase in outdoor illuminance in a low outdoor illuminance region, and increases in outdoor illuminance in a medium to high region of outdoor illuminance. Along with this, it decreases gradually.

  When the air conditioning load K2 performs a cooling operation in the summer, if the outdoor illuminance is low, the elevating position of the slat S is raised, and the daylight is actively introduced into the building H1 to thereby increase the power of the lighting load K3. It can be seen that consumption is suppressed and total power consumption is suppressed. On the other hand, if the outdoor illuminance is high, it is understood that by blocking daylight, the power consumption of the air conditioning load K2 is suppressed, and the total power consumption is also suppressed.

  In addition, when the air conditioning load K2 performs a heating operation in winter, if the outdoor illuminance is high, the daylight functions as auxiliary heating by actively introducing daylight into the building H1, and the power consumption of the air conditioning load K2 It can be seen that the amount is suppressed and the total power consumption is also suppressed. On the other hand, if the outdoor illuminance is low, the window W1 is shielded by the blind K1, thereby reducing the through heat transmitted from the building H1 through the window W1 to the outside of the building H1, and the power consumption of the air conditioning load K2 is reduced. It can be seen that the total power consumption is also suppressed.

  From the above results, it can be seen that further energy reduction can be expected by adding up / down control linked to outdoor illuminance to open / close control linked to outdoor illuminance.

  Specifically, as shown in FIG. 5 (b), when the outdoor illuminance is low during cooling and when the outdoor illuminance is high during heating, the raising / lowering control for increasing the raising / lowering position of the slat S is linked to the outdoor illuminance. Added to the open / close control of the slat S. At this time, the slat angle of the slat S is controlled in the opening direction when the outdoor illuminance is low during cooling, controlled in the closing direction when the outdoor illuminance is high, and closed when the outdoor illuminance is low during heating. It is controlled in the opening direction when the outdoor illuminance is high. The total power consumption in this case is represented by characteristics Y1 and Y2 (bold solid lines) shown in FIG. 5A, and can lead to a reduction in the total power consumption of the air conditioning load K2 and the lighting load K3.

  The cooperative control unit U0 has the configuration shown in FIG.

  The cooperative control unit U0 includes a time acquisition unit 1, an illuminance acquisition unit 2, an air conditioning state acquisition unit 3, a direct light shielding prediction unit 4, a cloudy sky determination unit 5, a height determination unit 6, a height information storage unit 7, and an angle determination unit. 8. An angle information storage unit 9 and a height / angle control unit 10 are provided. Further, the direct light shielding prediction unit 4 includes a sun position calculation unit 41, a direct sunlight prevention data generation unit 42, an incident distance information storage unit 43, and a building information storage unit 44. Further, the height determination unit 6, the angle determination unit 8, and the height / angle control unit 10 constitute a control unit 11, which corresponds to the control unit of the present invention.

  The time acquisition unit 1 acquires information on the current time from the time measuring unit G1 of another terminal on the network NT1. Further, the time acquisition unit 1 may be configured such that the time acquisition unit 1 performs a time counting operation of the current time.

  An illuminance sensor M1 is disposed outside the building H1, and the illuminance sensor M1 detects outdoor illuminance outside the building H1 (particularly, illuminance due to daylight (sunlight)). The detection signal of the sensor M1 is input and outdoor illuminance information is acquired.

  The air conditioning state acquisition unit 3 acquires the air conditioning state information of the air conditioner K2 from the air conditioning control unit U2. This air conditioning state information includes information on the operation mode (cooling operation or heating operation) of the air conditioner K2.

  Hereinafter, the blind control by the cooperative control unit U0 will be described with reference to the flowchart of FIG.

  First, the time acquisition unit 1 acquires current time information (S1).

  The building information storage unit 44 stores building information such as the position, structure, and location conditions of the building H1 in advance, and the latitude and longitude of the building H1, the size and orientation of the window W1, and the surroundings of the building H1. Each information of a building is registered in advance as building information. For example, as shown in FIG. 7, the horizontal dimension X11 of the ridge H12 provided on the upper part of the window W1, the vertical dimension X12 between the upper end of the window W1 and the ridge H12, and the height dimension X13 of the window W1. Each information of the dimension X14 in the vertical direction between the lower end of the window W1 and the floor surface H11 is also included in the building information.

  Then, the solar position calculation unit 41 calculates the virtual solar altitude for the building H1 based on the time information acquired by the time acquisition unit 1 and the position information of the building H1 read from the building information storage unit 44. Calculated as the apparent height of the sun). At this time, the solar position calculation unit 41 predicts not only the current solar position but also the trajectory of the solar position from a current time to a predetermined time later (for example, 2 hours later) (S2).

  Next, the illuminance acquisition unit 2 acquires outdoor illuminance information (S3). The cloudy sky determination unit 5 determines the current weather based on the current time information acquired by the time acquisition unit 1 and the outdoor illuminance information acquired by the illuminance acquisition unit 2 (S4). For example, if the outdoor illuminance in the daytime is equal to or higher than a predetermined level, it is determined that the sky is clear, and if the outdoor illuminance in the daytime is less than the predetermined level, it is determined that the sky is cloudy (including rainy weather). In the night from sunset to sunrise, the slat S of the blind K1 is often maintained in the fully lowered state and the closed state in consideration of security.

  When the cloudy sky determination unit 5 determines that the sky is clear, the direct light shielding prediction unit 4 performs the operation of step S5. When the cloudy sky determination unit 5 determines that it is cloudy, the operation of step S5 by the direct light shielding prediction unit 4 is skipped.

  Incident distance information is stored in the incident distance information storage unit 43 in advance. This incident distance information will be described. As shown in FIG. 7, assuming that the range in which the direct light of the sun irradiated into the building H1 through the window W1 reaches the floor surface H11 in the building H1 is the irradiation range R1, the window W1 in the irradiation range R1 Is the incident distance X1. The maximum allowable distance X1m of the incident distance X1 is incident distance information.

  Next, the direct shot prevention data generation unit 42 generates direct shot prevention data based on the prediction result of the sun position by the sun position calculation unit 41 and the incident distance information read from the incident distance information storage unit 43 (S5). .

  The direct shot prevention data includes a light shielding upper limit raising / lowering position and a light shielding upper limit angle. The light shielding upper limit raising / lowering position is such that the incident distance X1 of the direct sunlight incident on the building H1 does not exceed the maximum allowable distance X1m for a predetermined time (for example, two hours later) from the present time. This is the upper limit position of the lift position (the lift position where Xs in FIG. 7 is minimum). The light shielding upper limit angle is an upper limit value of a slat angle that prevents direct sunlight from passing through the blind K1 and entering the building H1 for a predetermined time (for example, two hours later) from the present time. This direct-irradiation prevention data is used to ensure that the direct sunlight is not inserted more than necessary into the building H1. The slat angle when the slat S is fully closed is 0 degree, and the slat angle when the slat S is fully open is 90 degrees.

  For example, when the building H1 is located at 31 degrees latitude and 121 degrees longitude, the solar altitude and solar azimuth at 8 am on September 22 are 26.5 degrees and -70.9 degrees (relative to the south). 70.9 degrees in the east direction), and the apparent height of the sun with respect to the window W1B on the east surface is 27.8 degrees. In this case, the upper limit value (light shielding upper limit angle) of the slat angle that the blind K1 blocks the direct sunlight and prevents the direct light from being inserted into the building H1 is 53.1 degrees. That is, if the slat angle exceeds 53.1 degrees, direct sunlight is incident on the building H1.

In the case of the building structure shown in FIG. 7, the light shielding length Xs of the slat S that satisfies the incident distance X1 ≦ maximum allowable distance X1m is θ, where the incident angle of the direct sunlight on the floor surface H11 is θ.
Xs = X13 + X14−X1m · tan θ
It becomes.

  For example, under the condition of the maximum allowable distance X1m = 3 (m), X12 = 0.5 (m), X13 = 2 (m), X14 = 0.75 (m), and incident angle θ = 27.8 degrees. Then, the light shielding length Xs = 1.2 (m). That is, when the elevating position of the slat S is above the light shielding length Xs = 1.2 (m), the direct sunlight is incident on the building H1 exceeding the maximum allowable distance X1m = 3 (m). End up.

  In the above-described example, the data is the direct prevention data [light shielding upper limit angle: 53.1 degrees, light shielding upper limit lifting position: light shielding length Xs = 1.2 (m)].

  Next, the process of determining the raising / lowering position of the slat S and the slat angle by the height determination unit 6 and the angle determination unit 8 will be described.

  The height information storage unit 7 stores in advance height information in which the correspondence between the outdoor illuminance and the lift position of the slat S is registered. FIG. 8A shows the height information when the air conditioning load K2 is performing the cooling operation, and FIG. 8B shows the height information when the air conditioning load K2 is performing the heating operation.

  The height information (FIG. 8 (a)) corresponding to the cooling operation of the air conditioning load K2 sets the raising / lowering position of the slat S to the lowering direction (lower elevation position) as the outdoor illuminance is higher. Is shielded from light. On the other hand, as the outdoor illuminance is lower, the raising / lowering position of the slat S is set in the hoisting direction (the raising / lowering position is higher), and daylight is actively introduced into the building H1. In Fig.8 (a), the raising / lowering position of the slat S is set to four steps L1-L4 according to outdoor illumination intensity. The lifting position L1 is complete winding (100% winding), the lifting position L2 is 66% winding, the lifting position L3 is 33% winding, and the lifting position L4 is complete winding (0% winding). ).

  The height information (FIG. 8 (b)) corresponding to the heating operation of the air conditioning load K2 sets the raising / lowering position of the slat S to the hoisting direction (the direction where the raising / lowering position is higher) as the outdoor illuminance is higher. Has been actively introduced into the building H1. On the other hand, the lower the outdoor illuminance, the lowering position of the slat S is set in the lowering direction (lowering position is lower), and the through heat transmitted from the building H1 to the outside of the building H1 through the window W1 is reduced. I am letting. In FIG.8 (b), the raising / lowering position of the slat S is set to four steps according to outdoor illumination intensity. The lift position L11 is completely wound (100% lift), the lift position L12 is 66% lift, the lift position L13 is 33% lift, and the lift position L14 is completely wound (0% lift). ).

  The height information shown in FIGS. 8A and 8B is the consumption of the air conditioning load K2 and the lighting load K3 in consideration of the facility characteristics of the structure of the building H1, the structure of the window W1, the air conditioning load K2, and the lighting load K3. A simulation for calculating energy is performed, and the simulation result is created. That is, according to the outdoor illuminance, the ascending / descending position of the slat S having the smallest sum of the energy consumption of the air conditioning load K2 and the lighting load K3 is derived by simulation, and the derived results are statistically summarized. In FIGS. 8A and 8B, the region where two lifting positions overlap with one outdoor illuminance is because the switching timing of the lifting positions differs depending on the winding control and the winding control. is there.

  Then, the height determination unit 6 determines whether the operation mode of the air conditioner K2 is the cooling operation or the heating operation based on the air conditioning state information acquired by the air conditioning state acquisition unit 3. When the air conditioner K2 is in the cooling operation, the height information during the cooling operation shown in FIG. 8A is read from the height information storage unit 7, and when the air conditioner K2 is in the heating operation, the height information is stored in the height information storage unit 7 as shown in FIG. The height information at the time of heating operation shown in b) is read. The height determination unit 6 applies the outdoor illuminance information acquired by the illuminance acquisition unit 2 to the read height information, and determines the elevation position of the slat S (S6).

  Next, the angle information storage unit 9 stores in advance angle information in which the correspondence between the outdoor illuminance and the slat angle of the slat S is registered according to the lift position of the slat S. FIGS. 9A to 9C show angle information when the air conditioning load K2 is performing the cooling operation, and FIGS. 10A to 10C are when the air conditioning load K2 is performing the heating operation. Angle information.

  The angle information corresponding to the cooling operation of the air conditioning load K2 sets the slat angle in the closing direction as the outdoor illuminance increases. 9A to 9C, the slat angle is set by using one of the three characteristics Y31 to Y33 according to the lift position determined by the height determination unit 6. The characteristic Y31 corresponds to the outdoor illuminance region Z31 where the outdoor illuminance is high and the lift position is completely lowered. The characteristic Y32 corresponds to the outdoor illuminance region Z32 where the outdoor illuminance is intermediate and the lift position is 33% higher. The characteristic Y33 corresponds to the outdoor illuminance region Z33 where the outdoor illuminance is low and the lift position is 66% higher.

  In the angle information corresponding to the heating operation of the air conditioning load K2, the slat angle is set to the opening direction as the outdoor illuminance is higher. 10A to 10C, the slat angle is set by using any one of the three stages of characteristics Y41 to Y43 according to the lift position determined by the height determination unit 6. The characteristic Y41 corresponds to the outdoor illuminance region Z41 where the outdoor illuminance is low and the lift position is 66% higher. The characteristic Y42 corresponds to the outdoor illuminance region Z42 in which the outdoor illuminance is intermediate and the lift position is 33% higher. The characteristic Y43 corresponds to the outdoor illuminance region Z43 where the outdoor illuminance is high and the lift position is completely lowered.

  The angle information shown in FIGS. 9 and 10 calculates the energy consumption of the air conditioning load K2 and the lighting load K3 in consideration of the facility characteristics of the structure of the building H1, the structure of the window W1, the air conditioning load K2, and the lighting load K3. A simulation is performed, and the simulation result is created. That is, the slat angle with the least sum of the energy consumption of the air conditioning load K2 and the lighting load K3 is derived by simulation according to the outdoor illuminance and the lift position determined by the height determining unit 6, and the derived result is statistically calculated. Are summarized in 9A to 9C and FIGS. 10A to 10C, areas where two slat angles overlap with respect to one outdoor illuminance are hoisting control and lowering control. This is because the switching timing of the slat angle is different.

  Then, the angle determination unit 8 determines whether the operation mode of the air conditioner K2 is the cooling operation or the heating operation based on the air conditioning state information acquired by the air conditioning state acquisition unit 3. 9 is read from the angle information storage unit 9 during the cooling operation of the air conditioner K2, and the angle during the heating operation illustrated in FIG. 10 is read from the angle information storage unit 7 during the heating operation of the air conditioner K2. Read information. The angle determination unit 8 determines the slat angle of the slat S by applying the outdoor illuminance information acquired by the illuminance acquisition unit 2 and the lift position determined by the height determination unit 6 to the read angle information (S7). .

  Next, the height / angle control unit 10 includes the direct shot prevention data generated by the direct shot prevention data generation unit 42, the lift position of the slat S determined by the height determination unit 6, and the slats of the slat S determined by the angle determination unit 8. Based on the angle, the elevating position of the slat S and the slat angle are controlled (S8).

  In the present embodiment, the height / angle control unit 10 determines whether or not the elevation position of the slat S determined by the height determination unit 6 is below the light shielding upper limit elevation position. When the raising / lowering position of the slat S determined by the height determining unit 6 is below the light shielding upper limit raising / lowering position, the raising / lowering position of the slat S determined by the height determining unit 6 is finally determined as the control content of the blind K1. On the other hand, when the raising / lowering position of the slat S determined by the height determining unit 6 is above the light shielding upper limit raising / lowering position, the raising / lowering position of the slat S is set as the light shielding upper limit raising / lowering position, and the light shielding upper limit raising / lowering position is set as the control contents of the blind K1. As the final decision.

  Further, the height / angle control unit 10 determines whether or not the slat angle of the slat S determined by the angle determination unit 8 is equal to or less than the light shielding upper limit angle. When the slat angle of the slat S determined by the angle determination unit 8 is equal to or less than the light shielding upper limit angle, the slat angle of the slat S determined by the angle determination unit 8 is finally determined as the control content of the blind K1. On the other hand, when the slat angle of the slat S determined by the angle determination unit 8 is larger than the light shielding upper limit angle, the elevating position of the slat S is set as the light shielding upper limit angle, and the light shielding upper limit angle is finally determined as the control content of the blind K1.

  Then, the height / angle control unit 10 performs the lifting control and the opening / closing control of the blind K1 so that the final lifting position and slat angle of the slat S are determined as described above.

  For example, during cooling, the elevation position of the slat S determined by the height determination unit 6 is “33% hoisting”, the slat angle of the slat S determined by the angle determination unit 8 is “60 degrees”, Upper limit angle: 53.1 degrees, light shielding upper limit lifting position: 40% hoisting]. In this case, the height / angle control unit 10 performs the raising / lowering control and the opening / closing control of the blind K1 so that the raising / lowering position is 33% and the slat angle is 53.1 degrees.

  Thus, when performing energy saving control using the introduction of daylight, the energy efficiency in air conditioning and lighting in the building H1 is improved by performing not only the opening / closing control of the blind K1 but also the lifting control. Can be further improved.

  Moreover, by setting the slat angle according to the raising / lowering position of the blind K1, it is possible to set the slat angle in consideration of the daylight directly entering the building H1 without passing through the blind K1, thereby improving the energy efficiency. it can.

  In addition, among various factors that affect the amount of energy required for lighting around the window W1 and air conditioning, simple control can be realized by performing elevating control and opening / closing control according to outdoor illuminance with a large influence.

  Moreover, in this embodiment, in order to ensure that the direct sunlight from the sun is not inserted into the building H1 more than necessary, the light shielding upper limit raising / lowering position is set, and the discomfort due to the direct sunlight is reduced. Yes. Furthermore, the raising / lowering control of the blind K1 may cause an unpleasant operation sound during the raising / lowering operation of the slat S, which may give the user an unpleasant feeling. However, by setting the light shielding upper limit raising / lowering position, unnecessary raising / lowering operations can be suppressed, and the user's discomfort can be eased.

(Embodiment 2)
The energy saving control system of the present embodiment has the same configuration as that of the first embodiment, and the same components are denoted by the same reference numerals and description thereof is omitted.

  In the cooperative control unit U0 of the present embodiment, the height determining unit 6 and the angle determining unit 8 perform the following processing when determining the lift position and slat angle of the slat S.

  First, when the outdoor illuminance fluctuates, the elevation position and the slat angle of the slat S determined by the height determination unit 6 and the angle determination unit 8 also change. However, particularly frequent changes in the lift position may cause discomfort to the user due to the occurrence of noise and flicker.

  Therefore, the height determination unit 6 and the angle determination unit 8 of the present embodiment give priority to the determination operation of the slat angle over the determination operation of the lift position of the slat S when the outdoor illuminance fluctuates.

  The height determination unit 6 and the angle determination unit 8 include an internal timer, and the outdoor illuminance changes in the increasing direction or decreasing direction (one direction) based on the outdoor illuminance information acquired by the illuminance acquiring unit 2. The time duration of the change in the upward or downward direction is counted.

  The height determination unit 6 updates the raising / lowering position of the slat S only when a change in outdoor illuminance in one direction (increase or decrease) continues for the first predetermined time T1 or more. In addition, the angle determination unit 8 updates the slat angle of the slat S only when the change in the outdoor illuminance in one direction continues for the second predetermined time T2 or more.

  Then, by setting the relationship of the first predetermined time T1> the second predetermined time T2, the update of the slat angle is performed with priority over the update of the lift position of the slat S. In other words, the lifting control, which may cause the user to feel uncomfortable from the viewpoint of noise and flickering, is not suitable for handling sudden changes in outdoor illuminance. It corresponds by opening and closing control. Thus, it is possible to suppress user discomfort and improve energy efficiency.

  Also, for example, when the outside weather changes suddenly from cloudy to clear sky after performing hoisting control to move the raising / lowering position of the slat S upward in elevating control during cooling, etc., the slat S is suddenly lowered. If this happens, there is a risk of discomfort to the user due to the occurrence of noise and flicker.

  Therefore, the height determination unit 6 performs the first predetermined time T1 at the time of hoisting control for moving the elevating position of the slat S upward and at the time of lowering control for moving the elevating position of the slat S downward. Different values may be set. In this case, the first predetermined time T11 is used when determining the lift position during the hoisting control, and the first predetermined time T12 is used when determining the lift position during the hoisting control. The predetermined time T11> the first predetermined time T12.

  Therefore, the frequency of the hoisting control can be reduced and the user's discomfort can be suppressed by making the determination of whether or not the hoisting control is possible more strictly than the hoisting control.

(Embodiment 3)
The energy saving control system of the present embodiment has the configuration shown in FIG. 11, and the same components as those of the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  In the present embodiment, the operation unit G2 is provided in another terminal on the network NT1, and when the user operates the operation unit G2, the elevating control and the opening / closing control of the slat S of the blind K1 can be manually performed. it can. The operation signal for the up / down control and the open / close control by the operation unit G2 is acquired by the operation content acquisition unit 12 of the cooperative control unit U0, and the height / angle control unit 10 controls the up / down control and open / close control of the slat S based on the operation signal. I do. The history of elevation control and opening / closing control of the slat S performed by the height / angle control unit 10 based on the operation signal (elevation position, slat angle) is stored in the operation history storage unit 13.

  The height / angle determination unit 10 refers to the operation history storage unit 13 when performing the elevation control of the slat S according to the outdoor illuminance, and operates the operation signal for a predetermined period (for example, 3 days) from the present to the past. The lowest raising / lowering position among the raising / lowering positions manually controlled by is set as the upper limit of the raising / lowering control.

  In this way, the user's comfort can be improved by reading the tendency of the lifting control from the user's operation history and reflecting it in the lifting control of the blind K1.

  In addition, the operation unit G2 is configured to be capable of user operation for switching the lift control and open / close control automatically controlled by the control unit 11 to be valid or invalid. That is, when the user operates the operation unit G2, it is possible to manually set the up / down control of the slat S and the valid / invalid setting of the open / close control.

  Some users may not like the environment in the building H1 created by the elevation position and slat angle of the slat S automatically controlled by the control unit 11. Therefore, after invalidating the automatic control of the raising / lowering position and slat angle of the slat S, the user operates the operation unit G2 to manually perform the raising / lowering control and the opening / closing control of the slat S, so that the user's favorite environment can be obtained. Can be produced.

  The automatic control valid / invalid setting may be set to at least one of the lifting control and the opening / closing control.

U0 cooperative control unit (energy saving control device)
2 Illuminance acquisition unit 4 Direct light shielding prediction unit 6 Height determination unit 7 Height information storage unit 8 Angle determination unit 9 Angle information storage unit 10 Height / angle control unit 11 Control unit

Claims (8)

An energy-saving control device for controlling a blind configured such that a plurality of slats are juxtaposed in an opening of a building, and the slat lift position and the rotation angle of the slats are adjustable.
Lighting control and air conditioning in the building are performed by using the incident light that enters the building through the blind by performing elevation control for controlling the elevation position of the slat and opening / closing control for controlling the rotation angle of the slat. An energy-saving control device comprising: a control unit that controls the raising / lowering position of the slat and the rotation angle of the slat in a direction that suppresses the sum of energy consumptions of the load. An illuminance acquisition unit for acquiring detection results of illuminance outside the building;
A height information storage unit storing height information in which the correspondence between the illuminance outside the building and the elevation position of the slat is registered;
An angle information storage unit that stores angle information in which the correspondence between the illuminance outside the building and the rotation angle of the slat is registered according to the lift position of the slat;
The elevation position of the slat in the height information is set to an elevation position capable of suppressing the sum of the energy consumption of the lighting load and the air conditioning load in the building when the illumination intensity is outside the corresponding building,
The rotation angle of the slat in the angle information is set to a rotation angle capable of suppressing the sum of each energy consumption of the lighting load and the air conditioning load in the building when the corresponding illumination is outside the building,
The control unit determines the lift position of the slat based on the illuminance outside the building acquired by the illuminance acquisition unit with reference to the height information, and refers to the angle information to determine the slat of the slat. The energy-saving control device according to claim 1, wherein the rotation angle of the slat is determined based on a lift position and the illuminance outside the building acquired by the illuminance acquisition unit. The height information storage unit stores the height information corresponding to each of the cooling operation of the air conditioning load and the heating operation of the air conditioning load,
The height information corresponding to the cooling operation of the air conditioning load is set so that the slats are raised and lowered as the illuminance outside the building increases.
The energy saving control device according to claim 2, wherein the height information corresponding to the heating operation of the air conditioning load sets the raising / lowering position of the slat higher as the illuminance outside the building increases.   When the illuminance outside the building fluctuates to change the raising / lowering position and rotation angle of the slats, the control unit increases the high illuminance when the fluctuation state of the illuminance outside the building continues for a first predetermined time or more. The height of the slat is determined with reference to the height information, and the rotation angle of the slat is determined with reference to the angle information when the illuminance fluctuation state outside the building continues for a second predetermined time or longer. 4. The energy saving control device according to claim 2, wherein the first predetermined time is longer than the second predetermined time. The first predetermined time is set corresponding to each of a hoisting operation for raising the raising / lowering position of the slat and a lowering operation for lowering the raising / lowering position of the slat,
The energy saving control device according to claim 4, wherein the first predetermined time corresponding to the hoisting operation is longer than the first predetermined time corresponding to the hoisting operation. A sun position calculator for calculating the locus of the sun position;
When the irradiation range is a range in which the direct sunlight radiated into the building through the opening reaches the building, and the horizontal distance from the opening of the irradiation range is the incident distance, the incident distance Incident distance information storage unit storing information on the maximum permissible distance,
A direct radiation prevention data generation unit for calculating an upper limit of the ascending / descending position of the slat that makes the incident distance within the maximum allowable distance based on the trajectory of the sun position over a period until a predetermined time elapses from the present time; Prepared,
The energy saving control according to any one of claims 1 to 5, wherein the control unit sets an upper limit of the lifting position of the slat during the lifting control to an upper limit of the lifting position calculated by the direct shot prevention unit. apparatus. An operation history storage unit that stores a change history of the raising / lowering position of the slat by an operation of an operation unit in which a user operation for changing the raising / lowering position of the slat is performed
The control unit sets an upper limit of the lift position of the slat during the lift control based on a change history of the lift position of the slat, and sets the upper limit of the lowest slat set by the operation of the operation unit in the past predetermined period. It is set as a raising / lowering position. The energy saving control apparatus in any one of the Claims 1 thru | or 6 characterized by the above-mentioned.   The energy-saving control device according to any one of claims 1 to 7, further comprising an operation unit that performs a user operation to switch between at least one of the elevation control and the opening / closing control by the control unit to be valid or invalid.

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