JP5507275B2 - Air conditioning controller - Google Patents

Description

  The present invention relates to an air conditioning control device.

  For example, in an office or the like in an office building, a plurality of air conditioners may be provided to harmonize the air in the office. In such an office, in order to suppress the power consumption of the air conditioner, for example, the operating conditions of the air conditioner in each region may be changed between a region where a person is present and a region where a person is not present ( For example, see Patent Document 1).

JP 11-311437 A

By the way, when the number of people in a region where people are present changes, the amount of heat generated in the region where people are present also changes. For this reason, for example, when the number of people in a certain area decreases and the amount of heat generation decreases, if the air conditioner is operating under the same conditions as before the number of people decreases, useless power may be consumed. . Moreover, in order to prevent a temperature rise when the number of people in a certain area increases and the calorific value increases, it is necessary to increase the air volume of the air conditioner. For this reason, in such a case, an excessive load is applied to the air conditioner, which may increase power consumption.
This invention is made | formed in view of the said subject, and aims at providing the air conditioner control apparatus which can suppress the power consumption of an air conditioner.

In order to achieve the above object, the air conditioner control device according to one aspect of the present invention is configured so that the temperature of a predetermined section among a plurality of sections in a conditioned space as a space in an office becomes a set temperature. In an air conditioning control device for controlling an air conditioner that supplies conditioned air to the conditioned space, a detection device that determines the number of people in the predetermined section, the set temperature is lowered when the number of people increases, and the number of people And a control device that corrects the set temperature so as to increase the set temperature when it decreases , the control device based on the information indicating the date and time in the first time zone corresponding to the lunch break time zone Controls the air conditioner so that the set temperature does not change, and the air conditioner changes so that the set temperature changes according to the number of people in a second time zone different from the first time zone. To control the aircraft.

  An air conditioner control device that can suppress power consumption of the air conditioner can be provided.

It is a figure showing composition of air-conditioning system 10 which is one embodiment of the present invention. 2 is a plan view showing a section of an office 15. FIG. 2 is a side view of a section 1 in an office 15. FIG. 2 is a diagram showing a configuration of a computer 21. FIG. It is a figure which shows the functional block which CPU71 implement | achieves. It is a flowchart which shows an example of the process which the computer 21 performs.

  At least the following matters will become apparent from the description of this specification and the accompanying drawings.

  FIG. 1 is a diagram illustrating a configuration of an air conditioning system 10 for harmonizing air in an office 15 in an office building, for example, according to an embodiment of the present invention. FIG. 2 is a plan view showing a section of a space (harmonized space) in the office 15. The office 15 is divided into, for example, 16 virtual sections of sections 1-16. FIG. 3 is a side view of the section 1 in the office 15.

  The air conditioning system 10 includes a controller 20, a computer 21, cameras 30, 31, a communication adapter 40, interface (IF) devices 41, 42, an outdoor unit 45, air conditioners (indoor units) A1 to A16, and an intake device B1. -B16, exhaust apparatus C1-C16, and illumination D1-D16 are comprised. The computer 21 and the cameras 30 and 31 correspond to an air conditioning control device.

  The controller 20 is, for example, a so-called operation panel for the user to set on / off of the air conditioners A1 to A16, selection of air conditioning, temperature, air volume, and the like. When the controller 20 is operated, the intake air amount of the intake devices B1 to B16, the exhaust amount of the exhaust devices C1 to C16, and the on / off of the illuminations D1 to D16 and the illuminance are set. The operation result of the controller 20 is transmitted to the computer 21.

  The computer 21 (control device) is a device that performs overall control of the air conditioning system 10. Specifically, the computer 21 is based on the operation result of the controller 20 or images taken by cameras 30 and 31 to be described later, the air conditioners A1 to A16, the intake devices B1 to B16, the exhaust devices C1 to C16, And controls the illuminations D1 to D16. Details of the computer 21 will be described later.

The camera 30 is provided on the ceiling of the section 1 and photographs a space inside the office 15. The camera 31 is provided, for example, on the ceiling of the section 16 and photographs a space in the office 15. It is assumed that all areas of the office 15 are photographed by the cameras 30 and 31. The computer 21 and the cameras 30 and 31 correspond to detection devices.
The communication adapter 40 connects the computer 21, the air conditioners A1 to A16, and the outdoor unit 45 so that the computer 21 can control the air conditioners A1 to A16 and the outdoor unit 45.

The interface device (IF device) 41 connects the computer 21 to the intake devices B1 to B16 and the exhaust devices C1 to C16 so that the computer 21 can control the intake devices B1 to B16 and the exhaust devices C1 to C16.
The interface device 42 connects the computer 21 and the lights D1 to D16 so that the computer 21 can control the lights D1 to D16.
The outdoor unit 45 is connected to the air conditioners A1 to A16, and operates together with the air conditioners A1 to A16 when the air conditioners A1 to A16 supply conditioned air.

As shown in FIG. 3, the air conditioner A <b> 1 is provided on the ceiling of the section 1, and supplies conditioned air to the section 1 through the air outlet according to the control of the computer 21. The air conditioner A1 is provided with a storage device (not shown) for storing information on the set temperature, the air volume, etc., and a temperature sensor (not shown). And air conditioner A1 supplies conditioned air based on the information which shows the temperature of a temperature sensor, and preset temperature so that the temperature (temperature of a temperature sensor) of the division 1 may become preset temperature. In the present embodiment, information stored in the storage device and indicating the set temperature is set temperature information.
The air conditioners A2 to A16 are respectively provided on the ceilings of the sections 2 to 16, and supply conditioned air to the sections 2 to 16 in the same manner as the air conditioner A1.

The intake device B <b> 1 is provided on the ceiling of the section 1, and sucks air outside the office 15 into the section 1 through the intake port under the control of the computer 21.
The intake devices B2 to B16 are respectively provided on the ceilings of the compartments 2 to 16, and inhale external air into the compartments 2 to 16 in the same manner as the intake device B1. Each of the intake devices B1 to B16 is provided with a fan (not shown) for taking in external air.

The exhaust device C <b> 1 is provided on the ceiling of the section 1, and exhausts the air of the office 15 to the outside through the exhaust port under the control of the computer 21.
The exhaust devices C2 to C16 are respectively provided on the ceilings of the sections 2 to 16, and exhaust the office air to the outside in the same manner as the exhaust device C1. Each of the exhaust devices C1 to C16 is provided with a fan (not shown) for exhausting office air.

  The illumination D1 is provided on the ceiling of the section 1 and emits light with illuminance according to the control of the computer 21. The illuminations D2 to D16 are respectively provided on the ceilings of the sections 2 to 16, and are the same as the illuminations D1.

  Thus, in this embodiment, the air conditioner Ak, the intake device Bk, the exhaust device Ck, and the illumination Dk are installed on the ceiling of the section k (k is a natural number from 1 to 16).

== Details of Computer 21 ==
As shown in FIG. 4, the computer 21 includes a memory 70 and a CPU 71.
The memory 70 stores program data to be executed by the CPU 71 and various data used when the CPU 71 executes processing.
The CPU 71 implements various functions by executing the program data stored in the memory 70. Specifically, the CPU 71 implements the functions of a time measuring unit 80, discriminating units 81 and 83, a number determining unit 82, and a control unit 84 as shown in FIG.

The timer unit 80 (timer) generates date and time information indicating the date and time and measures time.
The determination unit 81 determines whether or not the current time is included in a predetermined time zone based on the date / time information. Note that the predetermined time zone in the present embodiment is, for example, a lunch hour time zone (12:00 to 13:00) of an employee working in the office 15. Therefore, the determination unit 91 determines, for example, whether or not the current time is included in the lunch break time zone. The lunch break time zone corresponds to the first time zone, and the time zone different from the lunch break time zone corresponds to the second time zone.

  The number-of-people determining unit 82 determines how many people are in which section of the office 15 at predetermined time intervals (for example, 3 minutes) based on the images from the cameras 30 and 31. Specifically, the number determination unit 82 acquires the number of people in each section every minute, for example. The number-of-people determining unit 82 calculates the average number of people in each section every three minutes and determines how many people are in each section.

  Based on the determination result of the number determination unit 82, the determination unit 83 determines whether or not the increase or decrease in the number of people in each section is greater than a predetermined value every predetermined time (for example, 3 minutes). Specifically, the determination unit 83 determines whether or not the increased number of people for each predetermined time is larger than “n” (first value), and the decreased number of people for each predetermined time is “m” (the first number). It is determined whether or not the value is greater than 2). Here, the determination unit 83 processes the decreased number of people as a positive value.

  When the controller 20 is operated, the control unit 84 controls the air conditioners A1 to A16, the intake devices B1 to B16, the exhaust devices C1 to C16, and the illuminations D1 to D16 according to the operation result. Moreover, the control part 84 controls air conditioner A1-A16 based on the output of the time measuring part 80, and the discrimination | determination result of the discrimination | determination part 83, when the controller 20 is not operated. Specifically, the control unit 84 controls the air conditioners A1 to A16 so that the set temperatures of the air conditioners A1 to A16 are maintained during the lunch break. Moreover, the control part 84 reduces the preset temperature of the air conditioner in a certain division only for the predetermined period ta (1st period), when the increase number of people in a certain division is larger than "n" in the time slot | zone which is not a lunch break. Further, when the number of people decreasing in a certain section is larger than “m”, the control unit 84 increases the set temperature of the air conditioner in the certain section for a predetermined period tb (second period). When the control unit 84 changes the set temperature of the target air conditioner, the set temperature information stored in the storage device of the target air conditioner, that is, the value of the set temperature data is corrected. .

== An example of processing executed by the computer 21 ==
Here, an example of processing executed by the computer 21 when the controller 20 is not operated will be described with reference to FIG. FIG. 6 is a process performed for the section i, and the computer 21 executes the process shown in FIG. 6 for all the sections 1 to 16.

  First, the determination unit 81 determines whether or not the current time is included in, for example, a lunch break based on the date and time information generated by the time measuring unit 80 (S100). When the current time is included in the lunch break time zone (S100: YES), the control unit 84 controls the air conditioner Ai so that the set temperature is maintained (S200). And if process S200 is performed, process S100 will be performed again.

  On the other hand, when the current time is not included in the lunch break time zone (S100: NO), the number determination unit 82 determines the number of people in the section i every predetermined time (S101). Then, the determination unit 83 determines whether or not the increased number of people per predetermined time is larger than “n” based on the determination result of the number of people determination unit 82 obtained every predetermined time (S102). When the increased number of people every predetermined time is larger than “n” (S102: YES), the control unit 84 decreases the set temperature of the air conditioner i in the section i for a predetermined period ta (S103). When process S103 is executed, process S100 is executed again.

  In addition, when the increased number of people every predetermined time is not larger than “n” (S102: NO), the determination unit 83 determines whether the decreased number of people every predetermined time is larger than “m” (S104). . When the number of people decreased is greater than “m” (S104: YES), the control unit 84 increases the set temperature of the air conditioner i in the section i for a predetermined period tb (S105). When process S105 is executed, process S100 is executed again. In addition, when the number of people decreased every predetermined time is not larger than “m” (S104: NO), the process S100 is executed.

  In this way, the computer 21 maintains the set temperature of the air conditioner Ai during the lunch break, and controls the air conditioner Ai based on the number of people in the office 15 during the non-lunch break. To do. In the present embodiment, even if the number of people in the section i changes, if the change is not greater than “n” or “m”, the set temperature of the air conditioner i is maintained.

== Operation of the air conditioning system 10 ==
Here, for example, the operation of the air conditioning system 10 when the number of people in the section 7 changes will be described. Here, for example, it is assumed that the number of people in the section 7 increases from 3 to 20 at 10:00 and the number of people in the section 7 decreases from 20 to 2 at lunch break (12:00). The controller 20 is operated in advance, and the set temperature of the entire office 15, that is, the set temperature of all the air conditioners, is set to 26 ° C. (cooling), for example. Further, “n” and “m” described above are assumed to be “5”, for example, and the predetermined periods ta and tb are assumed to be 30 minutes, for example.

  First, in the time zone before lunch break, the number-of-people determining unit 82 executes the processing S101 and determines the number of people in the section 7 every 3 minutes. For this reason, for example, when 3 minutes have passed since 10:00, the number-of-people determining unit 82 determines that the number of people in the section 7 has increased from 3 to 20 people. Then, the determination unit 83 executes the process S102 and determines that the increased number of people in the section 7 is “17”, which is larger than the predetermined value “5”. As a result, the control unit 84 executes the process S103 and reduces the set temperature of the air conditioner A7 by, for example, 1 ° C. for 30 minutes. Therefore, for example, from 10:03 to 10:33, the set temperature of the air conditioner A7 in the section 7 is 25 ° C.

  And if time passes 10:33, the control part 84 will change the preset temperature of air conditioner A7 to the initial 26 degreeC. After that, when the time is 12:00, the number of people in the section 7 decreases from 20 people to 2 people, but as described above, the set temperature is not changed during the lunch break. That is, even when the number of people in the section 7 decreases at 12:00, the set temperature of the air conditioner A7 does not increase.

  Here, the operation of the air conditioning system 10 when the number of people in the section 7 increases by 17 at 10:00 has been described. For example, even when the number of persons in the section 7 is decreased by 6 or more at 11:00, it is the same as that at 10:00 except that the set temperature of the air conditioner A7 is increased by 1 ° C., for example. That is, in this case, from 11:03 to 11:33, the set temperature of the air conditioner A7 in the section 7 is 27 ° C., and then is changed to 26 ° C.

  The air conditioning system 10 of the present embodiment has been described above. The computer 21 determines the number of people in each section based on the images from the cameras 30 and 31. Further, for example, when the number of people in the section 7 increases, the computer 21 corrects the set temperature information so that the set temperature of the air conditioner A7 in the section 7 is lowered. When the number of people in the section 7 increases, the amount of heat generated in the section 7 increases. For this reason, for example, in order to prevent the temperature of the section 7 from rising, it is necessary to increase the air volume of the air conditioner A7. As a result, an excessive load is applied to the air conditioner A7, and power consumption may increase. In the present embodiment, when the number of people increases, the set temperature of the air conditioner A7 is lowered, and for example, it is possible to prevent an excessive load from being applied to the air conditioner A7. In addition, for example, when the number of people in the section 7 decreases, the computer 21 corrects the set temperature information so that the set temperature of the air conditioner A7 in the section 7 is increased. When the number of people in the section 7 decreases, the amount of heat generated in the section 7 decreases. For this reason, for example, if the air conditioner A7 is operated under the same conditions as before the number of people decreases, useless power may be consumed. In the present embodiment, when the number of people decreases, the set temperature of the air conditioner A7 is increased, so that the power consumption consumed by the air conditioner A7 can be suppressed. Therefore, in this embodiment, when the number of people in the office 15 changes, the power consumption of the air conditioners A1 to A16 can be suppressed.

  Further, the computer 21 determines the number of persons in the section 7 every 3 minutes, and reduces the set temperature of the air conditioner A7 only when the increased number of persons in the section 7 for 3 minutes becomes larger than, for example, “5” persons. . Generally, when the increase in the number of people in the section 7 is as small as 1 to 2, for example, the calorific value in the section 7 does not increase greatly. In such a case, since the computer 21 does not change the set temperature of the air conditioner A7, the processing of the computer 21 can be reduced.

  In addition, the computer 21 increases the set temperature of the air conditioner A7 only when the number of people reduced in the section 7 for 3 minutes becomes larger than, for example, “5”. Generally, when the decrease in the number of people in the section 7 is as small as 1 to 2, for example, the amount of heat generated in the section 7 does not greatly decrease. In such a case, since the computer 21 does not change the set temperature of the air conditioner A7, the processing of the computer 21 can be reduced.

  For example, when the number of people in the section 7 increases, the amount of heat generation also increases, and the temperature of the section 7 may increase. When the number of people in the section 7 increases and the calorific value increases, the computer 21 decreases the set temperature of the air conditioner A7 by 30 minutes. For this reason, in this embodiment, compared with the case where the preset temperature of air conditioner A7 is continued to reduce, power consumption can be reduced more.

  For example, when the number of people in the section 7 decreases, the amount of heat generation also decreases. When the number of people in the section 7 decreases and the calorific value decreases, the computer 21 increases the set temperature of the air conditioner A7 by 30 minutes. For this reason, in this embodiment, compared with the case where the preset temperature of air conditioner A7 is not changed, for example, division 7 can be made into desired preset temperature, reducing power consumption.

  In general, the number of offices 15 decreases when the lunch break starts, and increases when the lunch break ends. For this reason, for example, when the set temperature of the air conditioners A1 to A16 is increased based on the decrease in the number of people when the lunch break is started, the temperature of the office 15 is increased at the timing of the increase in the number of people after the lunch break. May rise rapidly. As a result, the power consumption of the air conditioners A1 to A16 increases. The computer 21 maintains the set temperature of the air conditioners A1 to A16 during the lunch break, and controls the air conditioners A1 to A16 based on the number of people in the office 15 during the non-lunch break. To do. For this reason, the computer 21 can operate the air conditioners A1 to A16 efficiently.

  In addition, said embodiment is for making an understanding of this invention easy, and is not for limiting and interpreting this invention. The present invention can be changed and improved without departing from the gist thereof, and the present invention includes equivalents thereof.

DESCRIPTION OF SYMBOLS 10 Air conditioning system 15 Office 20 Controller 21 Computer 30, 31 Camera 40 Communication adapter 41 Interface (IF) apparatus 45 Outdoor unit 70 Memory 71 CPU
80 Timekeeping section 81, 83 Discriminating section 82 Number of persons judging section 84 Control section
A1 to A16 air conditioner
B1-B16 Intake device C1-C16 Exhaust device D1-D16 Illumination

Claims (5)

In an air conditioning control device that controls an air conditioner that supplies conditioned air to the conditioned space, so that the temperature of a predetermined section of the plurality of sections in the conditioned space as a space in the office becomes a set temperature,
A detection device for determining the number of persons in the predetermined section;
The number increases as low as the set temperature and comprising a control device for correcting the set temperature so as to increase the said set temperature and said number is decreased,
The controller is
Based on the information indicating the date and time, in the first time zone corresponding to the lunch break time zone, the air conditioner is controlled so that the set temperature does not change, and the second time zone is different from the first time zone. In the time zone, controlling the air conditioner so that the set temperature changes according to the number of people,
An air conditioning control device. The air conditioning control device according to claim 1,
The detection device includes:
Judge the number of people every predetermined time,
The control device includes:
Controlling the air conditioner so that the set temperature decreases when the number of persons increasing in the predetermined time becomes larger than a first value;
An air conditioning control device. The air conditioning control device according to claim 2,
The control device includes:
Controlling the air conditioner so that the set temperature rises when the number of people decreasing in the predetermined time becomes greater than a second value;
An air conditioning control device. The air conditioning control device according to claim 1,
A timer for measuring time is further provided.
The control device includes:
When the number of people increases, controlling the air conditioner so that the set temperature is lowered only for a first period based on the timing result of the timer,
An air conditioning control device. The air conditioning control device according to claim 4,
The control device includes:
When the number of persons decreases, controlling the air conditioner to increase the set temperature only for a second period based on the timing result,
An air conditioning control device.

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