JP2019049404A - Plan generation device, plan generation method, air conditioning system, and program - Google Patents

Abstract

To generate a plan for relaxing an air conditioning setting for each time period.SOLUTION: A plan generation device comprises an extraction unit and a plan generation unit. The extraction unit extracts information of change frequency of a setting temperature for each time period from log data for linking start/stop conditions, operation modes, and setting temperature values of air conditioners, and time periods, and extracts an energy savable time period on the basis of the extracted information of the change frequency. The plan generation unit calculates an energy saving setting temperature from the log data, and generates an energy saving setting plan on the basis of the calculated energy saving setting temperature and the energy savable time period.SELECTED DRAWING: Figure 1

Description

  Embodiments of the present invention relate to a plan generation device, a plan generation method, an air conditioning system, and a program.

  There is known a method of utilizing operation data of a building facility to operate an existing air conditioner such as an office so as to save energy. Even if there is a monitoring system that collects and visualizes air conditioning environmental data, it is difficult to select which air conditioner to operate with energy saving settings and to maintain comfort. In particular, since too much cooling or warming is known only to the occupants of the room, there is a need for an environment where the building air conditioning manager can grasp the waste of such air conditioning and consider energy saving measures.

  For example, in an environment where the air conditioning usage status at the same time of day does not change, the person who has operated the air conditioner selects the most energy saving day in the log data and follows it as the set temperature change schedule A way to do it has been proposed. However, with this method, the log whose air conditioning setting has been strengthened is also followed and the energy saving is not always a drawback, or the setting log which is energy saving when the external air load is small is applied when the external air load is large, and the comfort is impaired. Had the disadvantage of

Patent 4449149 gazette

  Therefore, an embodiment of the present invention provides a plan generating device for creating a plan of energy saving setting for alleviating the air conditioning setting for each time zone.

  The plan generation device according to one embodiment includes an extraction unit and a plan creation unit. The extraction unit extracts the information on the change frequency of the set temperature for each time zone from the log data in which the air conditioner status, operating mode and set temperature value, and the time zone are linked, and the extracted change Based on the frequency information, extract the energy saving possible time zone. The plan creation unit calculates an energy saving set temperature from the log data, and creates an energy saving setting plan based on the calculated energy saving set temperature and the energy saving enabled time zone.

BRIEF DESCRIPTION OF THE DRAWINGS The block diagram which shows an example of the air conditioning system which concerns on one Embodiment. The figure which shows the example which visualized the use condition of the air conditioner. The flowchart which shows the creation processing of the energy saving setting plan concerning one embodiment. The figure which shows the example of the energy saving plan which concerns on one Embodiment. The figure which shows the example of the log data which concern on one Embodiment. The figure which shows the example of extraction of the energy saving possible time zone concerning one embodiment. The figure which shows the example of extraction of preset temperature operation which concerns on one Embodiment. The figure which shows the relationship example of the change frequency of setting temperature, and room temperature. The figure which shows the example which visualized the use condition of the air conditioner. The figure which shows the example of a relationship between the setting temperature of the air conditioning which feels comfortable, and average temperature. The block diagram which shows another example of the air-conditioning system which concerns on one Embodiment. The block diagram which shows another example of the air-conditioning system which concerns on one Embodiment. The figure which shows the structure of the plan production | generation apparatus which concerns on one Embodiment, or an air conditioning system.

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

First Embodiment
In the plan generation device according to the present embodiment, the room occupant changes the set temperature for each time slot from the log data in which the time zone is linked with the information regarding the air conditioner status, operation mode and set temperature. It is an apparatus which acquires the information regarding the frequency which carried out, calculates the energy saving possible time zone and the energy saving setting temperature from the said information, and creates the energy saving setting plan of the air conditioner based on these information.

  In the following description, changing the setting temperature, etc. means changing the setting temperature based on the energy saving setting plan, or changing the setting temperature if it is not necessary to change the setting temperature based on the energy saving setting plan. It is assumed that the concept includes not changing. Furthermore, when another parameter (for example, air volume etc.) is planned as an energy saving setting, it may be a concept including a change of the other parameter.

  FIG. 1 is a conceptual view of an air conditioning system provided with a plan generation device according to the present embodiment. The air conditioning system 1 includes a plan generation device 10, a central control device 20, and a plurality of air conditioners 30, and controls air conditioning of a space (hereinafter referred to as a target space 50) including an air conditioner 30 to be controlled. Do.

  The target space 50 may be an entire facility such as a house or a building, or an area within a facility such as a room or a corridor, and may be a space distinguished by a floor, a wall, or the like. For example, in FIG. 1, the air conditioner 30A performs air conditioning by adjusting the room temperature or the like of the target space 50A, and the air conditioners 30B, 30C, and 30D perform air conditioning of the target space 50B.

  The air conditioner 30 is, for example, an existing air conditioner whose temperature is controlled in accordance with a set value input by the occupant in the target space 50 via the remote control 40. The set value may be input from the central control unit 20. In a building in which there are a plurality of target spaces, the central control unit 20 allows an administrator outside the target space to grasp the operation history of each air conditioner 30, remotely operate each air conditioner 30, and perform air conditioning at a predetermined time. It may be a known product used in combination with an air conditioning system in an apparatus such as a Building Energy Management System (BEMS) introduced to change the setting value of the machine 30. In this embodiment, the central control unit 20 is used to change the setting value of the air conditioner 30 at a given time.

  The plan generation device 10 includes an energy savingable time zone extraction unit 100, a plan creation unit 102, a plan storage unit 104, a signal output unit 106, a display unit 108, and an operation unit 110. Generates a control plan of the air conditioner 30 to be executed.

  The energy savingable time zone extraction unit 100 extracts a time zone in which each air conditioner 30 can perform the energy saving operation based on log data storing log information of the operation status of each air conditioner 30, as an extraction unit Have the function of

  The plan creating unit 102 calculates an energy saving set temperature from the log data, and creates an energy saving setting plan based on the calculated energy saving set temperature and the energy saving available time zone extracted by the energy saving available time zone extracting unit 100. .

  The plan storage unit 104 stores the energy saving setting plan created by the plan creation unit 102.

  The signal output unit 106 transmits information on the set temperature of each air conditioner 30 to the central control device 20 according to the energy saving setting plan stored in the plan storage unit 104.

  The display unit 108 displays a stored energy saving setting plan or a created energy saving setting plan to a user, for example, a manager who performs air conditioning management of a building or the like. The display unit 108 is, for example, a display device such as a liquid crystal display, an organic EL display, or a cathode ray tube display. Alternatively, a printer or the like that prints and outputs these results may be substituted.

  The operation unit 110 is a device that receives this input when the user browses the energy saving setting plan displayed on the display unit 108 and then inputs confirmation. The operation unit 110 is, for example, a device such as a keyboard and a mouse. The display unit 108 and the operation unit 110 may also be used to instruct the plan generation device 10 to execute a process or to check data other than the plan.

  The central control unit 20 includes a log acquisition unit 200, a log storage unit 202, and an air conditioner control unit 204, and collectively performs air conditioning settings for a building or the like as described above.

  The log acquisition unit 200 acquires log data of the operating state of each air conditioner 30. Log data includes, for example, a start / stop state indicating whether each air conditioner 30 is operating, an operation mode indicating whether a cooling operation or a heating operation is performed, information on a set temperature, the air conditioner 30 The data indicates the operating state of the air conditioner 30 in which the air temperature (room temperature) of the target space 50, to which the present invention belongs, and the date and time information are linked. The log data may include other information for monitoring or controlling the air conditioner 30 or the target space 50.

  The log storage unit 202 is a database that stores log data of each air conditioner 30 acquired by the log acquisition unit 200. When there are a plurality of air conditioners 30, for example, an ID uniquely indicating each air conditioner 30 is stored in association with the operation status of the air conditioner.

  For example, when the air conditioning system is a building, the air conditioner control unit 204 centrally controls the air conditioning of each target space 50. The air conditioner control unit 204 controls the air conditioning of each target space 50 by controlling the air conditioners 30. For example, the set temperature may be determined based on the opinion of the occupant for each room. In the present embodiment, the set temperature of each air conditioner 30 is changed for each time zone based on the plan generated by the plan generation device 10.

  As described above, the central control unit 20 controls the air conditioner 30 based on the plan related to the set temperature generated by the plan generation device 10, and performs control such that the room occupants of the target spaces 50 feel comfortable. .

  An example of the air conditioner 30 and the target space 50 will be described with reference to FIG. For example, the target space 50A is provided with one air conditioner of the air conditioner 30A and a remote control 40A capable of changing the set temperature of the air conditioner 30A from within the target space 50A. When the set temperature of the air conditioner 30A is not comfortable, the occupant of the target space 50A manually controls the room temperature of the target space 50A by changing the set temperature of the air conditioner 30A using the remote control 40A.

  On the other hand, the target space 50B is provided with three air conditioners 30B, 30C, and 30D, the set temperature of the air conditioner 30B can be changed by the remote control 40B, and the set temperature of the air conditioners 30C and 30D is changed by the remote control 40C. It is possible. Thus, the number of air conditioners 30 belonging to one target space may be one or more. Further, the remote control 40 for changing the set temperature of one air conditioner 30 may be one or plural, or the set temperature of the multiple air conditioners 30 may be changed by one remote control 40 conversely It may be possible.

  Next, the overall operation of the air conditioning system 1 will be described. In the following description, the operation mode is assumed to be the cooling mode. In the case of the heating mode, in principle, the upper and lower relationship of the set temperature is replaced. Unless otherwise noted, the energy saving setting plan is prepared by the same process in the heating mode.

  First, the air conditioner control unit 204 controls the air conditioners 30 to control the state of the target space 50 such as the room temperature. The control of the air conditioning is executed based on the plan generated by the plan generation device 10 in advance. When the air conditioning system 1 is provided with the plan generating device 10 for the first time, for example, the air conditioning is controlled based on a predetermined plan prepared in advance, and after the data is acquired, the plan generating device 10 The plan may be generated by

  The log acquisition unit 200 monitors the state of each air conditioner 30 and the state of each target space 50, and acquires a log. The room temperature of the target space 50 may be measured using a thermometer provided in the air conditioner 30, or a thermometer provided at a predetermined position of the target space 50 may be used. . Not only room temperature but also humidity may be measured. Simultaneously with this measurement, the set temperature changed by the air conditioner control unit 204 is also acquired as log data. As described later, an identifier may be given to the set temperature changed by the air conditioner control unit 204 so as to be distinguishable from the one manually changed.

  When the air conditioner control unit 204 changes the set temperature, it is assumed that the magnitude relationship between the set temperature in the air conditioner 30 or the power consumption for the start / stop state is known. For example, when the operation mode is the heating mode, the higher the set temperature, the larger the power consumption, and when the operation mode is the cooling mode, the lower the set temperature, the larger the power consumption. It is set. When changing the set temperature based on the plan, the air conditioner control unit 204 performs the setting change in consideration of the size of the power consumption of each parameter.

  The energy savingable time zone extraction unit 100 of the plan generation device 10 extracts a time zone in which energy saving is possible by comparing the frequency of the change direction of the set temperature based on the log data acquired by the log acquisition unit 200. FIG. 2 is an example of visualizing how the air conditioner 30 is used, and is a graph summarizing log data accumulated in the log storage unit 202 of the central control unit 20. In FIG. 2, an occupant who is present in each target space 50 for 30 minutes each detects an operation in which the set temperature of cooling is increased and an operation in which the occupant is lowered using the remote control 40. The detection results are accumulated for a predetermined number of days and displayed as a bar graph of the frequency of 30 minutes.

  The predetermined number of days may be, for example, data of the same time in the past, or data of one past month or two past months. The present invention is not limited to these, and the manager of the air conditioning system of the building may change the number of days for extracting the data as needed, and may be used. Furthermore, it may be an accumulation result in which weighting is performed as it is closer to the present, and the weight is reduced as it becomes older, instead of simply accumulating.

  The white graph in the center of the bar shows the probability that the operation was not performed, the upper hatched area is the probability of the operation to raise the set temperature, the lower polka dot is the set temperature Indicates the probability that the operation to lower the As a result of calculating such a probability, the energy saving possible time zone extraction unit 100 extracts a time zone in which the probability of raising the set temperature is higher than the probability of lowering the set temperature as the energy saving possible time zone. In the example of FIG. 2, the time of 8 o'clock to 10 o'clock (A), 10:30 to 13 o'clock (B), 18 o'clock to 18:30 (C), 19 o'clock to 20:30 (D) A band is extracted as an energy saving time zone.

  In addition, although the space | interval of the time slot | zone to extract is made into the predetermined space | interval of 30 minutes, it is not restricted to this, You may make it a little short (for example, 10 minutes) or long (for example, 60 minutes). Furthermore, it may be an irregular cycle. For example, the time interval may be changed to be short after noon, long in night or early morning, and so on.

  The energy saving enabled time zone is a time zone in which there is a statistically large tendency to loosen the setting of the air conditioner 30 by operating the remote control 40 by operating the remote control 40 due to the room occupant feeling that the air conditioning is too effective. By changing the setting of the air conditioner 30 operating in this time zone to the energy saving setting, it is possible to provide a smart energy saving air conditioning operation without the occupant feeling that the air conditioning is too effective to operate. It becomes possible.

  The plan creating unit 102 calculates the energy saving set temperature from the set temperature for each of these time zones. In general, since the set temperature is an integer value or a discrete value such as 0.5 ° C. increments, the energy saving setting is, for example, rounding up the decimal point of the average value of the set temperature of the air conditioner 30, or The value relaxed by rounding down may be used. Here, the relaxed value is a setting value that makes the power consumption smaller.

  That is, when the operation mode is the cooling mode, if the average set temperature is more than 25 ° C. and 26 ° C. or less, the energy saving setting is calculated as 26 ° C. If the average set temperature is 20 ° C. or more and less than 21 ° C. in the heating mode, the energy saving set temperature is calculated as 20 ° C. In this manner, the set temperature is changed in the direction in which the power consumption and the temperature are alleviated.

  FIG. 3 is a flowchart showing a flow of processing from acquisition of log data to creation of an energy saving plan described above.

  First, the log acquisition unit 200 acquires log data from the operation status of the air conditioner 30 (S100). Subsequently, the acquired log data is stored in the log storage unit 202 (S102).

  The energy saving available time zone extraction unit 100 first extracts the energy saving available time zone based on the log data stored in the log storage unit 202 (S104). The plan creation unit 102 calculates the energy saving set temperature and the like based on the log data in the energy saving enabled time zone (S106). Then, the energy saving setting temperature etc. which were calculated in each energy saving possible time zone, and the energy saving possible time zone are linked, and an energy saving plan is created (S108). The created energy saving plan is stored in the plan storage unit 104 (S110).

  With such a flow, an energy saving plan is created and stored. If there is a plan already saved, it may be deleted and newly saved, or the plan may be added. This process may be started at a timing when the plan generation device 10 is connected to the central control device 20, or may be started at a timing approved by a user who operates the plan generation device 10. When these devices are always connected, they may be repeatedly executed at predetermined intervals, for example, every 30 minutes which is the timing of data division.

  FIG. 4 is an example in which a part of the plan for changing the set temperature of the air conditioner 30 to the energy saving setting is extracted for each of the energy saving possible time zones. Such a setting is stored in the plan storage unit 104, and the set temperature is changed from the signal output unit 106 to the air conditioner control unit 204 at a time slightly before the time zone or at a time when the time zone comes. After being transmitted, the air conditioner control unit 204 controls the air conditioner 30 based on the signal.

  For example, the set temperature is set to 26 ° C. from 8 to 8:30. Set the set temperature to 26 ° C from 8:30 to 9:00. Since it is not the energy saving setting possible time zone between 10 o'clock and 10:30, the energy saving setting is not made. In FIG. 4, a place indicated by a dash (-) is a time zone in which the energy saving setting is not performed. As described above, the plan creation unit 102 calculates the energy saving set temperature from the log data, and creates the energy saving setting plan based on the energy saving set temperature and the energy saving settable time zone.

  The energy saving setting is not limited to only the set temperature, and may include, for example, an air volume setting, a humidification / dehumidification setting, and a start / stop state. In this case, the log acquisition unit 200 may acquire, in the log data, information other than the change of the set temperature, for example, the operation of the air volume or the humidification / dehumidification operation.

  In addition, in FIG. 4, in the energy saving setting possible time slot | zone, although the change of setting temperature etc. is carried out at an interval of 30 minutes, it is not restricted to this. That is, the set temperature may be changed based on the length of the energy saving settable time zone. For example, the energy saving settings between 8:30 and 10 may be the same. As described above, the interval of the time zone in which the log data is acquired and the length of the time zone in which the energy saving setting is performed may be different.

  The air conditioner control unit 204 controls each air conditioner 30 based on a general operation plan for a time other than the energy saving settable time zone. For example, when it is assumed that the plan of FIG. 4 is a plan of the air conditioner 30A, the air conditioner 30A is controlled so that the temperature change of the energy saving setting is performed at 8 o'clock which is the energy saving setting possible time zone. That is, when the air conditioner control unit 204 does not receive a signal from the signal output unit 106, it controls the air conditioner 30A based on a general operation plan, and when the signal from the signal output unit 106 is received. , Control based on the energy saving setting plan.

  Since this energy saving settable time zone and the set temperature are controls for the air conditioner 30A, no control signal for such temperature change is transmitted to the air conditioners 30B, 30C, and 30D. For example, when the time zone from 8:00 is not the energy saving setting possible time zone for the air conditioner 30B, the air conditioner 30B is operated based on the general operation plan as before that time. The general operation plan is, for example, an air conditioning plan for the entire building when the air conditioning system 1 centrally manages air conditioning of the building.

  As described above, according to the plan generation device 10 according to the present embodiment, a plan for energy saving setting is generated not for the entire building but for each target space, and the change of the set temperature of each target space 50 is performed according to the plan. It is done from the central control unit 20.

  In the case where a plurality of air conditioners 30B, 30C, and 30D are provided in one target space 50B as shown in FIG. 1, a plan may be created for each air conditioner 30, or the same target space A common plan may be created for the air conditioners 30B, 30C, and 30D based on data obtained by merging the operating states of the plurality of air conditioners 30 without identifying the air conditioners 30 belonging to 50.

  The air conditioner control unit 204 that has received the signal from the signal output unit 106 changes to the energy saving setting according to the above plan, but compares the energy saving setting temperature with the current setting temperature of the air conditioner 30, and sets the temperature It may be determined whether to execute the change of. Specifically, when the current set temperature is higher than the temperature planned as the energy saving set temperature, changing to the energy saving set temperature results in higher power consumption than the current set temperature. For example, when the energy saving setting temperature is 26 ° C. and the current setting temperature is 27 ° C., the power saving becomes larger than the current setting temperature when changing to the energy saving setting temperature. As described above, when the power saving becomes larger than the current set temperature when the temperature is changed to the energy saving set temperature, the change control of the set temperature may not be performed without the plan.

  Further, the air conditioner control unit 204 changes the setting of the air conditioner 30 to the energy saving set temperature according to the created energy saving setting plan based on the signal received from the signal output unit 106. When the air conditioner control unit 204 changes the set temperature, the log acquisition unit 200 may append a central control flag fC to the log data in order to distinguish it from the change of the set temperature by the remote control 40. The plan generation device 10 may create a plan based on the setting change log of the occupant by using the central control flag fC as an exception to the setting change by the air conditioner control unit 204.

  Since this is automatically performed separately from the setting change performed by the air conditioner control unit 204 in addition to the setting change that the occupant feels uncomfortable, it is reflected in the energy saving setting plan. This is because it is not a change of the set temperature based on the comfort of the room person. Thereby, the change operation of the set temperature of the occupant is reflected also in the log data in which the set temperature change by the air conditioner control unit 204 and by the central control device 20 coexist with the set temperature change by the remote controller 40 by the occupant. It is possible to create a smart plan and provide smarter energy saving air conditioning operation.

  The above is the flow of the creation process of the energy saving plan. Next, the process of extracting the energy savingable time zone from the log data will be described in detail.

  FIG. 5 is a diagram showing an example of items and values of log data of the air conditioner 30 accumulated in the log storage unit 202. As shown in FIG. The start / stop state of each air conditioner 30 linked with the time, the operation mode, the set temperature, and the central control flag fC are stored as time-series data every 10 minutes. The start / stop state may be the state of the air conditioner 30 on / off switch, or a continuous amount such as the indoor demand or the heat supplied to the room converted to off if zero, otherwise on. May be.

  A method of extracting the energy saving available time by the energy saving available time zone extraction unit 100 will be described in detail. The energy savingable time zone extraction unit 100 acquires time series data of the set temperature and the central control flag fC regarding the air conditioner 30 belonging to the same target space 50 and operating in the same operation mode.

  Here, the central control flag fC is the result of setting the time of fC = 1 changed by the central control unit 20 (air conditioner control unit 204) according to the energy saving setting plan or other general plans. Indicates that. On the other hand, it is indicated that fC = 0 is not a change that has been changed by the occupant via the remote control 40 or the like. Not only when the setting is changed but also after the change is made by the central control unit 20, fC = 1 may be stored continuously until there is an operation to change the room. If the central control unit 20 can not be controlled, it may be stored as fC = 0.

  FIG. 6 is a modification of the table shown in FIG. 5, in which the set temperature p at the observation time and the set temperature q after one unit time are arranged and described together with fC. The log data is stored in units of 10 minutes as in FIG. The energy saving available time zone extraction unit 100 extracts the energy saving available time zone based on the time information, p, q, and fC.

  Extraction is performed by dividing the log data acquired every 10 minutes every 30 minutes. In this case, the time unit for extracting the energy saving enabled time zone is 30 minutes. The frequency of raising and lowering the set temperature by the remote controller 40 is detected in this 30 minutes, and the number of operations is accumulated over the period of the log data. First, from the log data for 24 hours, the operation status of the set temperature for one day is detected.

  An example will be described below. This method is a calculation method as an example, and the calculation method is not limited to this, and any calculation method may be used as long as an operation to raise and lower the set temperature of the occupant can be properly acquired. It does not matter.

  In analyzing log data for one day, from 0 o'clock to 24 o'clock (0 o'clock on the next day) is divided every 30 minutes to form a set of 48 data. Hereinafter, for the sake of simplicity, the raising operation is represented as X, the lowering operation as Y, and the non-operation as Z, and subscripts from 0 to 47 are given sequentially from 0 o'clock. For example, operations from 0 o'clock to 0:30 are represented as X0, Y0, Z0, and operations from 7:30 to 8 o'clock are represented as X15, Y15, Z15.

  It demonstrates using the example of FIG. In FIG. 6, between 7:30 and 8:00, further detailed data of the set temperatures of 7:30, 7:40, 7:50, and the next time, that is, the row of 7:30 The 7:40 data is described in the 7.40 row as the 7:50 data, and the 7:50 data is described as the 8.80 data as q.

  Among the set temperatures of 7:30 to 7:50 set in this way, when there is a line where fC = 0 and p <q, X15 is set to 1. Similarly, if there is a row where f> C and p> q, then Y15 is 1. Then, if there is a row in which X15 and Y15 are not 1 but fC = 0 and p = q, Z15 is 1. Thus, data of Xj, Yj, Zj (0 ≦ j <48) is calculated. In the case of FIG. 6, X15 = 0, Y15 = 0, and Z15 = 1.

  FIG. 7 is a graph showing the result of the above calculation. Similarly, when the calculation is performed, there is an operation to raise the temperature at fC = 0 between 8:00 and 8:30, so X16 = 1, Y16 = 0, and Z16 = 0. Similarly, X17 = 0, Y17 = 1, and Z17 = 0. For data from 10 o'clock to 10:30, since fC = 1 in all 10 minutes, X20 = Y20 = Z20 = 0. On the other hand, between 10:30 and 11:00, X21 = 0, Y21 = 1, and Z21 = 0, although there are two lowering operations at fC = 0. In addition, when there exist both raising operation and lowering operation in 30 minutes, it is referred to as Xn = 1, Yn = 1, and Zn = 0.

  When a plurality of air conditioners 30 belong to the same target space 50, if the energy saving possible time zone is extracted for each air conditioner 30, the same process as described above is performed. When energy saving possible time zones are extracted for each target space 50, X, Y, Z values are calculated for each of the plurality of air conditioners 30, and the sum of them is calculated to obtain the probability of the raising operation and the lowering operation. You may ask. As another example, the values of X, Y, and Z may be calculated based on the log of the raising operation and the lowering operation including all of the plurality of air conditioners 30.

  In addition, in the above, although it divided into the time interval for every 10 minutes and was made to determine operation of the remote control 40 in the said 10 minutes, it is not restricted to this. For example, log data is written each time an event of operation of the remote control 40 occurs by linking the time when the remote control 40 is operated and the operation of the remote control 40, X, Y,. The value of Z may be calculated. By doing this, for example, X, Y, Z can be obtained by extracting the operation event of the remote control 40 within the same interval as the energy saving enabled time zone without dividing the 30 minutes and acquiring data of 10 minutes interval. It becomes possible to calculate the value of

  The log data for one day obtained as described above is accumulated for a predetermined number of days required to extract an energy saving possible time zone. With regard to log data for which Xj, Yj, Zj have already been calculated in the past, the data after the calculation may be stored in the plan generation device 10 or the central control device 20. By doing this, it is possible to calculate the energy savingable time zone in a shorter time without repeating the same calculation.

  Also, it is not necessary to analyze log data for one day collectively. For example, every 30 minutes, the data for the previous 30 minutes, more specifically, for example, is analyzed at 30 minutes using data from 7:30 to 8:00 after 8:00. It is also good. The timing of the calculation is not limited to these timings, and the creation of the energy saving setting plan may be performed before the time for executing the energy saving setting plan.

  For example, the calculation of the next time zone may be performed immediately before the time to be executed if there is a plan. For example, whether or not there is an energy saving setting plan from 8:00 may be detected at a timing after 7:55. This 7:55 is an example, and it is not this limitation. Thus, the timing of the calculations may be at any time if it is done before the time that would be performed if a plan exists.

  In the case of performing one day at a time, analysis may be performed from 0 o'clock to 0:30 o'clock before 0 o'clock, and the remaining analysis may be performed after 0 o'clock . If the control during the night is not so important, for example, the calculation may be automatically performed periodically at midnight or early morning.

  This operation is performed for a predetermined number of days, accumulated for each time zone of 30 minutes, divided by the number of days, and expressed as a probability, which is a graph shown in FIG.

  As described above, based on the probability distribution as shown in FIG. 2, when the probability of the increase operation of the set temperature in a certain time zone is significantly higher than the probability of the decrease operation, the energy saving possible time It may be extracted as a band. Significantly means that, for example, the raising operation is performed with a probability of 1.5 times or more the probability of the lowering operation. This scaling factor is an example, is not limited to this, and may be, for example, 1.8 times or 2 times. In addition, the probability of the minimum raising operation may be defined, and the minimum probability may be increased and the data may not be significant data when the probability of the operation does not exceed. As described above, based on the change frequency of the set temperature of the air conditioner 30 by the occupant, the set temperature change as the energy saving setting is performed via the central control device 20.

  As another example of the processing based on the change frequency of the set temperature, calculation may be performed based on the difference between Xj and Yj in order to compare the frequency of the raising operation and the lowering operation. In the following, Wj = Xj-Yj. The set {W j} is time-series data consisting of 48 elements. The possible energy saving time zone extraction unit 100 extracts a point at which the value of Wj is increased by 2 from the value before one point in time as a possible energy saving time zone related to cooling. Then, in the next time zone, if Yj = 0, the next time may be extracted as the energy saving time zone. As another example, in the later time zone, up to immediately before the time zone when Yj = 1 may be extracted as the energy saving possible time zone. In the case of heating, a point at which the value of Wj decreases by 2 is extracted as an energy saving possible time zone.

  The above extraction method is an example, and, for example, a point at which Wj increases by 1 may be extracted as the energy saving enabled time zone. As another example, if Wj = 0 at the next time or Wj = 1 at the next time after Wj is increased by one, it may be extracted as the energy saving enabled time zone. The extraction of Wj and the energy saving possible time zone may be changed according to the necessity of energy saving.

  In the case of the cooling mode, the energy saving possible time zone extraction unit 100 extracts the energy saving possible time zone in the time zone in which the value of the probability Xj / (Xj + Yj + Zj) of the raising operation accumulated for the predetermined number of days is equal to or more than the predetermined threshold. You may By doing this, it is expected that the time zone in which the operation by the occupant is extremely small is excluded, and that an erroneous energy saving setting plan is prevented from being created. Without this exclusion, there may be a negative effect such as excessive extraction of time slots that can not be considered as accidental room operation habits, such as early stages of log collection, as energy saving possible time zones. . Instead of just threshold determination, tests may be performed on each probability to extract a time zone that satisfies a predetermined significant difference.

  Thus, when the operation mode is the cooling mode, the energy savingable time zone extraction unit 100 extracts a time zone in which the set temperature tends to be raised by the occupant as the energy saving time zone. When the operation mode is the heating mode, a time zone in which the set temperature tends to be lowered is extracted as an energy saving possible time zone.

  When extracting the energy saving possible time zone, in the result of accumulating log data for a predetermined number of days, if the setting temperature has not been changed more than a predetermined number of times for each time zone, such a time zone May not be extracted as an energy saving time zone. The predetermined number of times is, for example, a predetermined number of days used for the accumulation or a half of the predetermined number of days. The predetermined number of times is not limited to these, and may be the number obtained by another method. In such a case, it is not always the case that the occupant feels that the set temperature of the time zone is not comfortable, and it is unclear whether the above-described significant data is obtained.

  It is not necessary for both the raising operation and the lowering operation to exceed the predetermined number of times, for example, when the raising operation exceeds the predetermined number of times but the lowering operation is less than the predetermined number of times, the raising operation May be significant data. In this case, it may be determined that the set temperature is felt to be low for the occupant, and may be extracted as the energy saving settable time zone.

  The plan creating unit 102 acquires time-series data of the set temperature with respect to the air conditioner 30 that belongs to the same target space 50 and operates in the cooling mode. The average value of these time-series data is mitigated by the method described above, and is taken as the energy saving set temperature of the cooling.

  The plan creating unit 102 links the energy saving set temperature and the time zone, and creates a plan for changing the set temperature of the air conditioner 30 to the energy saving set temperature for each energy saving possible time zone, to the plan storage unit 104 Remember.

  When acquiring the log data of the set temperature, the plan creating unit 102 may acquire the log data whose ON / OFF state is ON or which has the central control flag fC of 0 in a limited manner. As a result, an energy saving setting plan is created from the log data when the air conditioner 30 is operating or when central control is not performed, which is more based on the changing operation of the set temperature of the occupant. It is possible to create a plan.

  In addition, the energy saving set temperature of the energy saving available time zone may be calculated for the energy saving available time zone extracted by the energy saving available time zone extraction unit 100. As a result, it is possible to omit the calculation other than the energy saving settable time zone where the calculation of the energy saving set temperature is unnecessary.

  The signal output unit 106 outputs a signal related to the plan to the air conditioner control unit 204 according to the plan stored in the plan storage unit 104, and the air conditioner control unit 204 controls each air conditioner 30 based on the plan. Take control.

  The plan generation device 10 may include a display unit 108 and an operation unit 110, which are GUIs for confirming a plan stored in the plan storage unit 104. A user such as a building air conditioning manager or an air conditioning service man can confirm the plan via this GUI, that is, the display unit 108 and the operation unit 110. The signal output unit 106 may have a function of executing only the plan received the confirmation. This confirmation may have the meaning of approval. That is, a plan approved by the user may be executed, and a plan not approved may not be executed.

  Further, the display unit 108 may display data as a source of creating a plan in a format as shown in FIG. This makes it possible for the user to easily grasp how each air conditioner 30 is used in each target space 50.

  When the user confirms the plan, a graph as shown in FIG. 8 may be displayed on the display unit 108 as reference information. This FIG. 8 is a figure which shows the example which totaled the frequency of the operation which raises setting temperature and lowering operation according to room temperature. More specifically, it shows a histogram in which the number of the raising operation and the lowering operation input to the remote controller 40 in a certain target space 50 is totaled according to room temperature at the time of each operation.

  If the two distributions of the raising operation and the lowering operation are close, the setting change by the central control may be uncomfortable for the occupants and may be unacceptable. Therefore, before the execution of the plan, by checking the graph like this, when the setting temperature to be changed is close to the room temperature when the operation to raise and the operation to lower are similar, it is possible to reject the plan, for each energy saving possible time zone It is possible to review the set value of へ to a value that can be accepted by the room occupants. As a result, the execution of the energy saving setting plan that may be uncomfortable for the occupants may be suppressed.

  In addition, analysis using the graph of the change frequency of room temperature and setting temperature like FIG. 8 mentioned above is not processing after extracting the energy saving possible time zone concerning this embodiment, but preparation of a plan as a separate processing It can also be used for Specifically, even when the energy saving possible time zone is extracted separately from the above-described extraction method, the temperature having a strong tendency to raise the set temperature and the tendency to decrease the set temperature are based on the change frequency of the room temperature and the set temperature. The central control unit 20 may not control the temperature at which the temperature is a boundary with a strong temperature or a temperature close to it (for example, ± 0.5 ° C.).

  Furthermore, this is not limited to only when the energy saving possible time zone is extracted, and may be taken into consideration when changing the set temperature by the general central control unit 20. If you are planning to change the set temperature, or if you are going to change the set temperature, change the set temperature based on the room temperature and the change frequency of the set temperature by the occupant as described above It may be determined whether or not.

  FIG. 9 is a diagram in which the room temperature for each time zone is superimposed and displayed in FIG. The display unit 108 may display the change operation status of the past set temperature and the room temperature in an overlapping manner. By displaying FIG. 9 instead of FIG. 2, the user can confirm the past average room temperature when trying to execute the energy saving plan. Since it becomes possible to confirm the execution of a plan such as a setting temperature change after recognizing an average room temperature in log data, is it more comfortable for the occupant or is it more energy saving? It is possible to execute the plan created after confirming whether it is not.

  FIG. 10 is an example of a statistical database representing the relationship between the monthly average value of the outside air temperature and the optimum human temperature. According to this graph, it is possible to grasp how many% of people feel optimum when the room temperature is many times with respect to the outside air temperature. Based on such a database, the signal output unit 106 may correct and execute the plan so as not to deviate from the optimum temperature as compared with the average monthly outside air temperature at the time of executing the plan.

  Such a database can also be constructed from log data. First, the log acquisition unit 200 acquires outside temperature data from the outside temperature sensor mounted on the outdoor unit or the external weather database. For each of the set temperature raising and lowering operations performed by the room occupant, the two linear functions obtained by simply regressing the room temperature at that time with the ambient temperature are the lower limit line and the upper limit line of the database, respectively. I reckon. The outside air temperature may be replaced with one processed by a moving average or convolution operation for a predetermined period. Also, the regression is not limited to single regression, and may be performed by another regression method.

  As described above, according to the present embodiment, the generation temperature of the air conditioner is set so that the occupant does not feel comfortable by generating the plan based on the log in which the occupant changes the set temperature. Can be changed to the temperature of the energy saving setting. By setting the setting temperature at which the occupant feels comfortable for each target space 50 by acquiring the changing operation of the setting temperature by the actual occupant, and setting the setting temperature to reduce the power consumption It becomes possible.

  In the above description, although the air conditioner 30 and the target space 50 have been described as being plural, the present invention is not limited to this, and it is an energy saving setting plan for one target space 50 in one air conditioner 30 It is also good.

Second Embodiment
When there are a plurality of air conditioners 30 and target spaces 50, the central control device 20 or the plan generation device 10 may be provided with a database indicating which air conditioners 30 belong to which target space 50. The target space is obtained by acquiring or analyzing log data based on the database, and further generating a control signal output from the air conditioner 30 or the signal output unit 106 controlled by the air conditioner controller 204 based on the database. It is possible to change the temperature appropriately in accordance with the conditions of the air conditioner 50 and the air conditioner 30.

  For example, the position of walls within a building may be changed. In addition, the air conditioner 30 may also be replaced due to a failure or maintenance. Even in such a case, the user who manages the air conditioning can perform the same process as described above without knowing the state of the target space 50 and the air conditioner 30. In addition, the use of the air conditioners 30 in each target space 50 may change due to moving, increase or decrease of heat generation facilities, or increase, decrease, or update of the air conditioners 30. The date and time when such a change is made is referred to as the space change date and time of the target space 50.

  FIG. 11 is a block diagram of the air conditioning system 1 according to the present embodiment. As compared with the first embodiment described above, the plan generation device 10 further includes a target space ID storage unit 112.

  In the target space ID storage unit 112, a tying relationship between the air conditioner 30 and the target space 50 is registered. For example, the association between the ID uniquely assigned to the air conditioner 30 and the ID uniquely assigned to the target space 50 is registered.

  The energy savingable time zone extraction unit 100 acquires log data from the log storage unit 202 for the target space 50 registered in the target space ID storage unit 112. Thereafter, the date and time of the log data of the target space 50 is retrieved, and the above-described processing is performed on the data after the space modification date and time to extract the energy saving possible time zone. Similarly, the plan creation unit 102 calculates an energy saving set temperature based on data after the space change date and time, and creates an energy saving setting plan. The plan creating unit 102 does not have to directly acquire the data of the target space ID storage unit 112, and may create a plan of the time extracted by the energy saving available time zone extraction unit 100. Thereafter, a plan is created by the same process as that of the first embodiment described above.

  As described above, by limiting the log data of the target space 50 according to the date and time, it is possible to prevent the usage of the air conditioner 30 different from the current one from being reflected in the energy saving setting plan. As a result, an effect of preventing the air conditioner 30 from being set uncomfortable for the current occupant is expected.

  The plan generation device 10 may browse, correct, and register the contents of the target space ID storage unit 112 by the user via the display unit 108 and the operation unit 110. Furthermore, when data in the target space ID storage unit 112 is registered or corrected, the date of registration or correction may be displayed in order to reduce the effort of correcting the space modification date and time for a large number of tyings. The date and time when the air conditioner 30 is increased, decreased, or updated may be detected and displayed from the log data.

  Although the target space ID storage unit 112 is included in the plan generation device 10, the present invention is not limited to this, and the target space ID storage unit 112 may be included in the central control device 20. In this case, the correlation between the air conditioner 30 and the target space 50 may be recorded at the timing when the log acquisition unit 200 acquires log data, or the space change date and time can be registered or corrected in the user. , May have a user interface. When registration or correction is performed, a flag or the like indicating the space change date may be added to the log data.

Third Embodiment
In each embodiment described above, the energy saving setting plan created by the plan creating unit 102 is not limited to the one stored in the plan storage unit 104 in the plan generation device 10, and the plan storage unit performs central control It may be provided in the device 20.

  FIG. 12 is a block diagram of the air conditioning system 1 according to the present embodiment. As shown in FIG. 12, the plan storage unit 206 is provided in the central control unit 20. In this case, the plan creating unit 102 stores the created energy saving setting plan in the plan storage unit 206.

  In the present embodiment, it is not necessary to provide the signal output unit 106 in the plan generation device 10, and the air conditioner control unit 204 reads the plan from the plan storage unit 206 as needed, and controls the air conditioner 30. Let's do it.

  As another example, the plan storage unit 206 is not necessarily a necessary element, and the plan creating unit 102 may control the air conditioner 30 at the same timing as that of the above-described embodiment, ie, 30 minutes. At each timing, create a plan before that time, send the created plan to the air conditioner control unit 204, and control the air conditioner 30 based on the received plan. May be

  In any of the above cases, the air conditioner control unit 204 functions as a signal output unit 106 that outputs a signal for controlling the air conditioner 30. In this case, unlike the above-described embodiment, the signal output unit 106 may output a signal directly to the air conditioner 30, instead of outputting a signal to the air conditioner control unit 204. As another example, the signal output unit 106 outputs a signal based on the energy saving setting plan to a communication unit or the like that communicates with the air conditioner 30 in the air conditioner control unit 204, and the communication unit or the like is the air conditioner 30. Communication may be performed to actually execute the plan.

  As described above, according to the present embodiment, the configuration of the plan generation device 10 can be simplified, and in particular, there is no need to secure a capacity for storing a database or file. It is possible to flexibly install the plan generation device 10 in various environments.

  FIG. 13 is a block diagram illustrating an example of a hardware configuration according to an embodiment. The plan generation device 10 includes a processor 61, a main storage device 62, an auxiliary storage device 63, a network interface 64, and a device interface 65, and is implemented as a computer device 6 connected via a bus 66. You may In addition, the plan generation device 10 may further include an input device 67 and an output device 68.

  The plan generation device 10 in the present embodiment may be realized by installing a program to be executed by each device in advance in the computer device 6, or storing the program in a storage medium such as a CD-ROM or a network , And appropriately installed in the computer device 6.

  In addition, in FIG. 13, although the computer apparatus 6 is equipped with one each component, it may be equipped with two or more same components. Although one computer device is shown in FIG. 13, software may be installed in a plurality of computer devices. The processing results may be generated by each of the plurality of computer devices executing different processing of software. That is, the data processing apparatus may be configured as a system.

  The processor 61 is an electronic circuit including a control device and a computing device of a computer. The processor 61 performs arithmetic processing based on data and programs input from each device or the like of the internal configuration of the computer device 6, and outputs a calculation result and a control signal to each device or the like. Specifically, the processor 61 executes an OS (Operating System) of the computer 6, an application, and the like to control each of the devices constituting the computer 6.

  The processor 61 is not particularly limited as long as it can perform the above-described processing. The processor 61 may be, for example, a general purpose processor, a central processing unit (CPU), a microprocessor, a digital signal processor (DSP), a controller, a microcontroller, a state machine, or the like. Further, the processor 61 may be incorporated in an application specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or a programmable logic device (PLD). Moreover, the processor 61 may be comprised from several processing apparatus. For example, it may be a combination of a DSP and a microprocessor, or one or more microprocessors that cooperate with a DSP core.

  The main storage device 62 is a storage device for storing an instruction executed by the processor 61, various data, and the like, and the information stored in the main storage device 62 is directly read by the processor 61. The auxiliary storage device 63 is a storage device other than the main storage device 62. In addition, a memory | storage device shall mean the arbitrary electronic components which can store electronic information. Although volatile memory used for temporary storage of information such as RAM (Random Access Memory), DRAM (Dynamic RAM), SRAM (Static RAM), etc. is mainly used as the main storage device 62, it is an embodiment of the present invention. The main memory 62 is not limited to these volatile memories. The storage devices used as the main storage device 62 and the auxiliary storage device 63 may be volatile memory or non-volatile memory. The non-volatile memory is, for example, a programmable read only memory (PROM), an erasable PROM (EPROM), a non-volatile RAM (NVRAM), a magnetoresistive RAM (MRAM), a flash memory or the like. Also, as the auxiliary storage device 63, magnetic or optical data storage may be used. As the data storage, a magnetic disk such as a hard disk, an optical disk such as a DVD, a flash memory such as USB, a magnetic tape or the like may be used.

  If the processor 61 reads or writes information directly or indirectly to the main storage device 62 or the auxiliary storage device 63, the storage device is said to be in electrical communication with the processor. be able to. The main storage device 62 may be integrated into the processor. Again, main memory 62 may be said to be in electrical communication with the processor.

  The network interface 64 is an interface for connecting to a communication network wirelessly or by wire. The network interface 64 may be one that conforms to the existing communication standard. An output result or the like may be transmitted by the network interface 64 to the external device 8 communicatively connected via the communication network 7.

  The device interface 65 is an interface such as USB that is connected to the external device 8 that records output results and the like. The external device 8 may be an external storage medium or a storage such as a database. The external storage medium may be any storage medium such as HDD, CD-R, CD-RW, DVD-RAM, DVD-R, SAN (Storage Area Network). Alternatively, the external device 8 may be an output device. For example, there are an LCD (Liquid Crystal Display), a CRT (Cathode Ray Tube), a PDP (Plasma Display Panel), a speaker, and the like, but not limited thereto.

  In addition, a part or all of the computer device 6, that is, a part or all of the data processing device may be configured by a dedicated electronic circuit (hardware) such as a semiconductor integrated circuit on which the processor 61 and the like are mounted. Good. Dedicated hardware may be configured in combination with a storage device such as a RAM or a ROM.

  Although one computer device is shown in FIG. 13, software may be installed on a plurality of computer devices. The processing results may be generated by each of the plurality of computer devices executing different processing of software.

  Although the plan generation device 10 is configured as shown in FIG. 13 in the above description, it is not limited thereto. For example, the central control unit 20 is configured as shown in FIG. 13, and the plan generation unit 10 is software described by a program stored in the auxiliary storage unit 63, and the information processing by the software is a hardware resource. May be specifically realized using

  While certain embodiments of the present invention have been described, these embodiments have been presented by way of example only, and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and the gist of the invention, and are included in the invention described in the claims and the equivalent scope thereof. Further, it is also possible to combine parts of these embodiments appropriately within the scope of the present invention.

1: air conditioning system 10: plan generation device 100: energy saving time zone extraction unit 102: plan creation unit 104: plan storage unit 106: signal output unit 108: display unit 110: operation unit 20: central control unit 200: log acquisition unit 202: log storage unit 204: air conditioner control unit

Claims (16)

Information on the change frequency at which the set temperature for each time zone has been changed is acquired from the log data in which the information pertaining to the start / stop status of each air conditioner, the operation mode, and the value of the set temperature is linked to the time zone, An extraction unit that extracts an energy saving possible time zone based on the acquired information on the change frequency;
A plan creation unit that calculates an energy saving setting temperature from the log data and creates an energy saving setting plan based on the calculated energy saving setting temperature and the energy saving enabled time zone;
A plan generator comprising: The extraction unit
When the operation mode is the cooling mode, a time zone in which the set temperature tends to be raised is extracted as the energy saving possible time zone,
When the operation mode is the heating mode, a time zone in which the set temperature tends to be lowered is extracted as the energy saving possible time zone.
The plan generation device according to claim 1.   The plan generation device according to claim 1 or 2, wherein the extraction unit extracts a time zone in which the change frequency is equal to or more than a predetermined number as the energy saving possible time zone. A target space ID storage unit that associates and stores the date and time when the air conditioner belongs to the target space;
The extraction unit further extracts the energy savingable time zone for each air conditioner using the log data after the date and time stored in the target space ID storage unit.
The plan generation device according to any one of claims 1 to 3.   The plan generation device according to any one of claims 1 to 4, further comprising: a signal output unit that outputs a signal for changing the setting of the air conditioner according to the created energy saving setting plan. A plan storage unit for storing the energy saving setting plan created by the plan creation unit;
A display unit for displaying the energy saving setting plan stored in the plan storage unit;
The plan generation device according to claim 5, further comprising: It further comprises an operation unit for accepting that the user has confirmed the energy saving setting plan displayed on the display unit,
The plan generation device according to claim 6, wherein the signal output unit outputs a signal for changing the setting of the air conditioner based on the energy saving setting plan having received the confirmation. The log data further includes, when the set temperature is changed, information on whether the change is a change performed according to the signal output from the signal output unit.
The extraction unit extracts the energy savingable time zone based on a log of change of the set temperature other than the change of the set temperature performed according to the signal output by the signal output unit.
The plan generation device according to claim 6.   The signal output unit compares the preset temperature based on the energy saving setting plan with the current preset temperature, and changes the preset temperature based on the energy saving setting plan to a larger consumption than operating at the current preset temperature The plan generation device according to claim 6, wherein when the power is supplied, the signal for changing the setting of the air conditioner is not output. The log data further includes information on the room temperature of the space to which the air conditioner belongs,
The plan generation device according to claim 6, wherein information on the change frequency with respect to room temperature in the log data is output as a histogram to the display unit. The plan generation device according to any one of claims 1 to 4.
Air conditioner,
A signal output unit that outputs a signal for changing the setting of the air conditioner according to the created energy saving setting plan;
An air conditioning system comprising A plan generating device according to any one of claims 5 to 10.
One or a plurality of air conditioners which operate by changing the set temperature based on the signal output from the signal output unit.
An air conditioning system comprising When there are a plurality of air conditioners, the log data is generated for each target space in which each of the air conditioners performs air conditioning,
The extraction unit extracts the energy savingable time zone for each of the target spaces,
The plan creating unit creates the energy saving setting plan for each of the target spaces,
The signal output unit outputs a signal for changing the set temperature of the air conditioner belonging to the target space based on the energy saving setting plan for each of the target spaces.
An air conditioning system according to claim 11 or 12. If there are multiple air conditioners,
The extraction unit extracts the energy savingable time zone for each air conditioner,
The plan creating unit creates the energy saving setting plan for each air conditioner,
The signal output unit outputs, for each of the air conditioners, a signal for changing the set temperature based on the energy saving setting plan.
An air conditioning system according to claim 11 or 12. The extraction unit extracts the information on the change frequency of the set temperature for each time zone from the log data in which the air conditioner status, operating mode and set temperature value are linked to the time zone, and the extracted change Extracting energy saving possible time zones based on frequency information;
The planning unit calculates an energy saving set temperature from the log data, and creates an energy saving setting plan based on the calculated energy saving set temperature and the energy saving enabled time zone;
A plan generation method comprising: On the computer
The extraction unit extracts the information on the change frequency of the set temperature for each time zone from the log data in which the air conditioner status, operating mode and set temperature value are linked to the time zone, and the extracted change Means of extracting energy saving possible time zone based on frequency information,
A plan creation unit that calculates an energy saving setting temperature from the log data, and creates an energy saving setting plan based on the calculated energy saving setting temperature and the energy saving enabled time zone;
A program to function as

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