WO2024157373A1 - Air conditioning system and method for controlling air conditioning system - Google Patents

Air conditioning system and method for controlling air conditioning system Download PDF

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Publication number
WO2024157373A1
WO2024157373A1 PCT/JP2023/002200 JP2023002200W WO2024157373A1 WO 2024157373 A1 WO2024157373 A1 WO 2024157373A1 JP 2023002200 W JP2023002200 W JP 2023002200W WO 2024157373 A1 WO2024157373 A1 WO 2024157373A1
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WO
WIPO (PCT)
Prior art keywords
power outage
unit
time
date
conditioning system
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PCT/JP2023/002200
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French (fr)
Japanese (ja)
Inventor
千秋 荻原
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三菱電機株式会社
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Priority to PCT/JP2023/002200 priority Critical patent/WO2024157373A1/en
Publication of WO2024157373A1 publication Critical patent/WO2024157373A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/88—Electrical aspects, e.g. circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/30—Velocity
    • F24F2110/32—Velocity of the outside air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2130/00—Control inputs relating to environmental factors not covered by group F24F2110/00
    • F24F2130/10—Weather information or forecasts

Definitions

  • This disclosure relates to an air conditioning system that performs air conditioning and a method for controlling the air conditioning system.
  • Patent Document 1 discloses a technology in which the amount of power consumed by devices connected to a power outlet device is measured, and when it is predicted that the amount of power demand will exceed the amount of power supply, a power outlet device to be targeted for a power outage and whose power supply is to be cut off is selected in order of decreasing priority set for each power outlet device so that the total amount of power consumed will satisfy the amount of power shortage.
  • the present disclosure has been made in consideration of the above, and aims to provide an air conditioning system that can reduce the load on the air conditioner even in an environment where the power supply is forcibly cut off.
  • the air conditioning system disclosed herein includes a detection unit that detects the occurrence of a power outage based on the power supply voltage supplied to the air conditioner, an estimation unit that estimates the predicted date and time of the next power outage based on power outage occurrence information including the date and time of the power outage detected by the detection unit, and a control unit that stops operation of the air conditioner before the next power outage occurs based on the estimated predicted date and time.
  • the present disclosure has the effect of providing an air conditioning system that can reduce the load on the air conditioner, even in an environment where the power supply is forcibly cut off.
  • FIG. 1 is a diagram showing a schematic configuration of an air conditioning system according to a first embodiment.
  • FIG. 2 is a diagram showing an example of the configuration of a handheld operation unit shown in FIG. 1 ;
  • a flowchart for explaining a procedure for detecting a power outage by the air conditioning system according to the first embodiment A flowchart for explaining a control procedure for an indoor unit of an air conditioning system according to the first embodiment.
  • FIG. 1 is a diagram showing a schematic configuration of an air conditioning system according to a second embodiment.
  • FIG. 1 is a diagram showing the configuration of a control circuit for implementing the functions of the air conditioning system according to the first and second embodiments.
  • FIG. 1 is a diagram showing dedicated hardware for realizing the functions of the air conditioning system according to the first and second embodiments.
  • Fig. 1 is a diagram showing a schematic configuration of an air conditioning system 100 according to embodiment 1.
  • the air conditioning system 100 according to embodiment 1 has an outdoor unit 1, an indoor unit 2, and a handheld operation unit 3.
  • the outdoor unit 1 and the indoor unit 2 may be collectively referred to as an air conditioner. Note that, although one indoor unit 2 is connected to one outdoor unit 1 in Fig. 1, it is also possible to connect multiple indoor units 2 to one outdoor unit 1.
  • the air conditioning system 100 receives power from a power source 4.
  • the outdoor unit 1 is connected to the power source 4, and the power source 4 supplies power to the air conditioning system 100 through the outdoor unit 1.
  • the power source 4 may also be connected to the indoor unit 2 and supply power from the indoor unit 2.
  • the outdoor unit 1 has a detection unit 11, a control unit 12, and a communication unit 13.
  • the detection unit 11 detects the occurrence of a power outage based on the power supply voltage. Specifically, the detection unit 11 sets a threshold value for the power supply voltage value, and determines that a power outage has occurred when the power supply voltage value falls below the threshold value, and outputs power outage information to notify the control unit 12 of the occurrence of a power outage.
  • the control unit 12 When the detection unit 11 outputs the power outage information, the control unit 12 generates power outage occurrence information by adding a timestamp including the date and time of the power outage to the power outage information output by the detection unit 11 before the power supply is completely cut off, and transmits the generated power outage occurrence information to the communication unit 23 of the indoor unit 2 via the communication unit 13.
  • the indoor unit 2 has an estimation unit 21, a control unit 22, a communication unit 23, and a local weather information receiving unit 24.
  • the communication unit 23 has a function of communicating with the communication unit 13 of the outdoor unit 1, and receives the power outage occurrence information transmitted from the communication unit 13.
  • the communication unit 23 passes the received power outage occurrence information to the estimation unit 21 via the control unit 22.
  • the local weather information receiving unit 24 receives weather information for the location where the air conditioner indoor unit 2 is installed from outside the air conditioning system 100.
  • the local weather information receiving unit 24 acquires current weather information and future weather forecast information, for example weather information for several hours from now, from the received weather information.
  • the local weather information receiving unit 24 has a memory unit 24a, and temporarily stores the acquired weather information in the memory unit 24a.
  • the memory unit 24a is a volatile memory, but may be any storage medium or storage device that is capable of temporary storage.
  • the estimation unit 21 has a calculation unit 21a and a memory unit 21b.
  • the estimation unit 21 acquires the power outage information received from the outdoor unit 1 via the communication unit 23 and the control unit 22, and the weather information stored in the memory unit 24a, and stores them in the memory unit 21b. At this time, the estimation unit 21 can acquire the weather information for the same date and time as the power outage date and time indicated by the power outage information, and store it in the memory unit 21b. The estimation unit 21 can also accumulate the history information of the power outage information and the weather information as power outage history information, and store it in a database in the memory unit 21b.
  • the memory unit 21b is a non-volatile memory, but may be any storage medium or storage device as long as it can be retained in a non-volatile manner.
  • the calculation unit 21a estimates the predicted date and time of the next power outage based on the past power outage history information stored in the memory unit 21b.
  • a method for calculating the predicted date and time of the next power outage an autoregressive model, a moving average model, or the like can be used, which uses past power outage history information as a time series signal to determine the predicted date and time of the next power outage through statistical analysis.
  • a logistic regression model is generated from the power outage history information, and the probability of a power outage is calculated by inputting the date and time and weather information.
  • the calculation unit 21a stores the calculated predicted date and time of the next power outage in the memory unit 21b.
  • the control unit 22 controls the air conditioner based on the predicted date and time of the next power outage, which is stored in the memory unit 21b of the estimation unit 21. Specifically, the control unit 22 stops operation of the air conditioner before the next power outage occurs, based on the predicted date and time of the next power outage. This brings the air conditioner into a stopped state when a power outage occurs, and prevents the air conditioner from being overloaded by being forcibly cut off from the power supply to the air conditioner while it is operating due to a power outage.
  • control unit 22 causes the air conditioner to perform pre-cooling operation or pre-warming operation before the next power outage occurs and before the operation of the air conditioner is stopped, based on the predicted date and time of the next power outage.
  • Pre-cooling operation and pre-warming operation refer to operating the air conditioner to maintain a comfortable indoor environment for the user for a while after the operation of the air conditioner is stopped.
  • the user can set the pre-cooling operation and pre-warming operation in advance in the function settings of the air conditioner. Items to be set include a set temperature indicating the desired indoor temperature, and a duration indicating how long a comfortable indoor environment is to be maintained.
  • the control unit 22 can adjust the set temperature, air volume, etc.
  • control unit 22 may adjust the set temperature so that a comfortable indoor environment for the user can be maintained for the set duration after the air conditioner is stopped. For example, in the case of pre-cooling operation, the control unit 22 can adjust the set temperature lower the longer the set duration. In the case of pre-warming operation, the control unit 22 can adjust the set temperature higher the longer the set duration. Note that, depending on the user or the season, pre-cooling operation and pre-warming operation may not be required, so the control content can be changed as appropriate.
  • the timing to start pre-cooling or pre-warming operation is determined based on the length of time that the indoor temperature can be changed to the set temperature before the air conditioner is stopped, prior to the predicted date and time of the next power outage and the timing to stop the operation of the air conditioner.
  • the timing to stop the operation of the air conditioner is determined based on the time it takes from when the control unit 22 starts the operation stop control until the operation of the air conditioner is actually stopped, so that the operation of the air conditioner can be safely stopped before the predicted date and time of the next power outage. If the operation of the air conditioner is stopped at the time to start pre-cooling or pre-warming operation, the control unit 22 does not need to perform pre-cooling or pre-warming operation.
  • the user may be able to select in advance in the settings related to pre-cooling and pre-warming operation whether or not to perform pre-cooling or pre-warming operation if the operation of the air conditioner is stopped at the time to start pre-cooling or pre-warming operation. If the air conditioner is stopped at the timing to start pre-cooling operation or pre-warming operation and is set to perform pre-cooling operation or pre-warming operation, the control unit 22 controls the air conditioner to perform pre-cooling operation or pre-warming operation even if the air conditioner has already been stopped.
  • the control unit 22 instructs the control unit 12 of the outdoor unit 1 to perform operation stop control, and stops the operation of the air conditioner. Furthermore, when the predicted date and time of the next power outage arrives, the control unit 22 determines whether or not a power outage has actually occurred, and if a power outage has not occurred, records in the memory unit 21b that no power outage occurred at the predicted date and time, and if a power outage has occurred, records in the memory unit 21b that a power outage has actually occurred.
  • the power outage history information, predicted occurrence date and time, and the result of whether or not a power outage actually occurred stored in the memory unit 21b of the estimation unit 21 can be used, for example, by machine learning, to improve the prediction accuracy when calculating the predicted occurrence date and time of a power outage.
  • the handheld operation unit 3 is a remote controller for operating the air conditioner at the user's hand.
  • FIG. 2 is a diagram showing an example of the configuration of the handheld operation unit 3 shown in FIG. 1.
  • the handheld operation unit 3 has a display unit 31 for providing information to the user, and an operation unit 32 for the user to operate.
  • the handheld operation unit 3 can use the display unit 31 to display the predicted date and time of the next power outage, the set temperature, etc.
  • the handheld operation unit 3 can also use the display unit 31 to display whether the unit is in pre-cooling operation or pre-warming operation.
  • FIG. 3 is a flow chart for explaining the procedure for the air conditioning system 100 according to the first embodiment to detect a power outage.
  • the detection unit 11 of the outdoor unit 1 judges whether the power supply voltage has dropped based on whether the power supply voltage value has fallen below a threshold value (step S1). If the power supply voltage has not dropped (step S1: No), the flow of FIG. 3 ends. If the power supply voltage has dropped (step S1: Yes), power outage occurrence information indicating the date and time of the power outage is transmitted from the outdoor unit 1 to the indoor unit 2 (step S2).
  • the detection unit 11 detects a drop in the power supply voltage, it outputs power outage information notifying the control unit 12 of the occurrence of a power outage, and the control unit 12 generates power outage occurrence information by adding a timestamp indicating the date and time of the power outage to the power outage information, and transmits the generated power outage occurrence information to the indoor unit 2 via the communication unit 13.
  • the indoor unit 2 stores the power outage occurrence information transmitted from the outdoor unit 1 in the memory unit 21b (step S3).
  • the procedure shown in FIG. 3 is executed periodically, for example.
  • the indoor unit 2 stores the power outage occurrence information in the memory unit 21b in step S3
  • the weather information for the date and time of the power outage acquired by the local weather information receiving unit 24 is added and stored as power outage history information.
  • FIG. 4 is a flowchart for explaining the control procedure of the indoor unit 2 of the air conditioning system 100 according to the first embodiment.
  • the estimation unit 21 of the indoor unit 2 judges whether or not it is in operation (step S11). If it is not in operation (step S11: No), the flow of FIG. 4 ends. If it is in operation (step S11: Yes), the estimation unit 21 estimates the predicted date and time of the next power outage (step S12). At this time, the estimation unit 21 may display the estimated predicted date and time of the next power outage using the display unit 31 of the handheld operation unit 3, as shown in FIG. 2.
  • the control unit 22 of the indoor unit 2 performs pre-cooling operation or pre-warming operation before the predicted date and time of the next power outage (step S13). At this time, the control unit 22 may display, using the display unit 31 of the handheld operation unit 3, that the pre-cooling operation or pre-warming operation is in progress, as shown in FIG. 2.
  • the control unit 22 stops operation of the air conditioner before the next power outage occurs based on the predicted date and time of the next power outage (step S14). After the operation of the air conditioner is stopped, when the predicted date and time of the next power outage has passed (step S15), the indoor unit 2 ends the flow of FIG. 4.
  • FIG. 5 is a flowchart for explaining the control procedure of the indoor unit 2 after the predicted date and time of the power outage has passed. After the flow shown in FIG. 4 is completed, the procedure shown in FIG. 5 is executed.
  • the control unit 22 of the indoor unit 2 determines whether or not a power outage has actually occurred after the predicted date and time of the power outage has passed (step S21). As described above, the procedure shown in FIG. 3 is executed periodically, so when a power outage occurs, power outage occurrence information is sent from the outdoor unit 1 in step S2 of FIG. 3. Therefore, the control unit 22 can determine whether or not a power outage has occurred based on whether or not power outage occurrence information has been received from the outdoor unit 1.
  • step S21: Yes the control unit 22 stores in the memory unit 21b the fact that a power outage occurred on the predicted date and time when operation is next resumed (step S22), and ends the flow of FIG. 5. If a power outage occurs, the processes of steps S1 to S3 in FIG. 3 are also executed, and power outage history information is also stored. If a power outage does not occur (step S21: No), the control unit 22 stores in the memory unit 21b the fact that a power outage did not occur on the predicted date and time (step S23), and ends the flow of FIG. 5.
  • the functional configuration shown in FIG. 1 is an example, and the detection unit 11 may be configured in the indoor unit 2, and the estimation unit 21 and local weather information receiving unit 24 may be configured in the outdoor unit 1.
  • the estimation unit 21 and local weather information receiving unit 24 are configured in the outdoor unit 1, for example, the estimation unit 21 can notify the control unit 22 of the indoor unit 2 of the predicted date and time of the next power outage, which is the estimation result, and the control unit 22 can perform pre-cooling operation or pre-warming operation, and the control unit 12 of the outdoor unit 1 can stop operation of the air conditioner before a power outage occurs.
  • the air conditioning system 100 includes a detection unit 11 that detects the occurrence of a power outage based on the power supply voltage supplied to the air conditioner, an estimation unit 21 that estimates the predicted date and time of the next power outage based on the power outage occurrence information including the date and time of the power outage detected by the detection unit 11, and a control unit 22 that stops the operation of the air conditioner before the next power outage occurs based on the estimated predicted date and time.
  • the control method of the air conditioning system 100 includes a step of detecting the occurrence of a power outage based on the power supply voltage, a step of estimating the predicted date and time of the next power outage based on the power outage occurrence information including the date and time of the detected power outage, and a step of stopping the operation of the air conditioner before the next power outage occurs based on the estimated predicted date and time.
  • the air conditioning system 100 further includes a local weather information receiving unit 24 that acquires weather information for the location where the air conditioner is installed, and the estimation unit 21 estimates the date and time of the next power outage based on the weather information in addition to the power outage occurrence information.
  • the local weather information receiving unit 24 acquires weather information for the date and time of past power outages and future weather information.
  • the future weather information can be, for example, weather information for up to several hours from the present time.
  • the detection unit 11 detects the occurrence of a power outage from a drop in the power supply voltage supplied to the air conditioner.
  • the air conditioning system 100 may further include a memory unit 21b that stores power outage occurrence information and the predicted date and time of the next power outage estimated by the estimation unit 21.
  • the estimation unit 21 estimates the predicted date and time of the next power outage by performing statistical analysis on past power outage occurrence information and weather information. Specifically, the estimation unit 21 can use an autoregression model, a moving average model, or the like, which uses past power outage history information as a time-series signal to determine the predicted date and time of the next power outage through statistical analysis. The estimation unit 21 can also use a method in which a logistic regression model is generated from the power outage history information, and the date and time and weather information are input into the logistic regression model to determine the probability of a power outage occurring.
  • control unit 22 performs pre-cooling or pre-heating operation before stopping the operation of the air conditioner based on the predicted date and time of the next power outage. This makes it possible to maintain a comfortable indoor environment for the user for a certain period of time even after the power supply is forcibly cut off.
  • the air conditioning system 100 can further include a remote control unit 3 that displays the predicted date and time of the next power outage. By displaying this on the remote control unit 3, the user can know in advance the date and time of the next power outage.
  • the handheld control unit 3 can also display the predicted date and time of the next power outage and whether pre-cooling or pre-warming operation is in progress. This allows the user to know in advance the date and time of the next power outage, and to know that pre-cooling or pre-warming operation is in progress in preparation for the next power outage.
  • Embodiment 2. 6 is a diagram showing a schematic configuration of an air conditioning system 200 according to embodiment 2.
  • one indoor unit 2 is connected to one outdoor unit 1, but in the air conditioning system 200, a plurality of indoor units 2-1 to 2-4 are connected to one outdoor unit 1.
  • four indoor units 2-1 to 2-4 are shown, but the present invention is not limited to this, and there is no limit to the number of indoor units 2.
  • the function of the indoor unit 2 described in FIG. 1 does not necessarily need to be provided in all indoor units 2-1 to 2-4, so it is sufficient that one of the indoor units 2-1 to 2-4 has the function of the indoor unit 2 described in FIG. 1.
  • the indoor unit 2-1 directly connected to the outdoor unit 1 can be configured to have a local weather information receiving unit 24 that acquires weather information, an estimation unit 21 that estimates the predicted date and time of the next power outage, and a control unit 22 that ends the operation of the air conditioner before a power outage occurs.
  • the indoor unit 2-1 having the estimation unit 21 can notify each of the indoor units 2-2 to 2-4 of the predicted date and time of the next power outage, which is the estimation result, and the start date and time of the pre-cooling operation or pre-warming operation can be determined in each of the indoor units 2-1 to 2-4.
  • the detection unit 11 may be configured in any of the indoor units 2-1 to 2-4, and the estimation unit 21 and local weather information receiving unit 24 may be configured in the outdoor unit 1.
  • the detection unit 11, the control unit 12, the estimation unit 21, the control unit 22, and the local weather information receiving unit 24 are realized by processing circuits. These processing circuits may be realized by dedicated hardware, or may be control circuits using a CPU (Central Processing Unit).
  • CPU Central Processing Unit
  • FIG. 7 is a diagram showing the configuration of the control circuit 90 for realizing the functions of the air conditioning systems 100 and 200 according to the first and second embodiments.
  • the control circuit 90 includes a processor 91 and a memory 92.
  • the processor 91 is a CPU, and is also called a central processing unit, processing unit, arithmetic unit, microprocessor, microcomputer, DSP (Digital Signal Processor), etc.
  • the memory 92 is, for example, a non-volatile or volatile semiconductor memory such as RAM (Random Access Memory), ROM (Read Only Memory), flash memory, EPROM (Erasable Programmable ROM), EEPROM (registered trademark) (Electrically EPROM), a magnetic disk, a flexible disk, an optical disk, a compact disk, a mini disk, a DVD (Digital Versatile Disk), etc.
  • RAM Random Access Memory
  • ROM Read Only Memory
  • flash memory EPROM (Erasable Programmable ROM), EEPROM (registered trademark) (Electrically EPROM), a magnetic disk, a flexible disk, an optical disk, a compact disk, a mini disk, a DVD (Digital Versatile Disk), etc.
  • the control circuit 90 When the above processing circuit is realized by the control circuit 90, it is realized by the processor 91 reading and executing a program stored in the memory 92 and corresponding to the processing of each component.
  • the memory 92 is also used as a temporary memory for each process executed by the processor 91.
  • the program executed by the processor 91 may be provided in a state stored in a storage medium, or may be provided via a communication path such as the Internet.
  • FIG. 8 is a diagram showing dedicated hardware for realizing the functions of the air conditioning systems 100 and 200 according to the first and second embodiments.
  • the processing circuit 93 is a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), or a combination of these.
  • the functions of the air conditioning systems 100 and 200 may be realized by combining the control circuit 90 with a processing circuit 93, which is dedicated hardware.

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Abstract

An air conditioning system (100) comprises: a detection unit (11) for detecting that power interruption has occurred, on the basis of power source voltage supplied to an air conditioner; an estimation unit (21) for estimating the predictive date and time of the occurrence of next power interruption, on the basis of power interruption occurrence information including the date and time of the occurrence of the power interruption detected by the detection unit (11); and a control unit (22) for stopping the operation of the air conditioner before the occurrence of the next power interruption, on the basis of the estimated predictive date and time of the occurrence.

Description

空気調和システムおよび空気調和システムの制御方法Air conditioning system and method for controlling air conditioning system
　本開示は、空気調和を行う空気調和システムおよび空気調和システムの制御方法に関する。 This disclosure relates to an air conditioning system that performs air conditioning and a method for controlling the air conditioning system.
　従来、電力不足に備えて、電力供給量に合わせて電力需要量を調整することが求められる場合がある。例えば、特許文献１には、電源コンセント装置に接続された機器の消費電力量を測定し、電力需要量が電力供給量を超えることが予想される場合、各電源コンセント装置に設定された優先度が低い順に、不足電力量を満たす合計消費電力量となるように、電力供給を遮断させる停電対象の電源コンセント装置を選択する技術が開示されている。 　In the past, in preparation for power shortages, it has been necessary to adjust the amount of power demand in accordance with the amount of power supply. For example, Patent Document 1 discloses a technology in which the amount of power consumed by devices connected to a power outlet device is measured, and when it is predicted that the amount of power demand will exceed the amount of power supply, a power outlet device to be targeted for a power outage and whose power supply is to be cut off is selected in order of decreasing priority set for each power outlet device so that the total amount of power consumed will satisfy the amount of power shortage.
特開２０１３－１１５８８５号公報JP 2013-115885 A
　しかしながら、空気調和機の運転を管理するユーザの中には、特許文献１に開示された技術のように消費電力量を用いるのではなく、分電盤内にタイマを設置して、指定時刻になると、強制的に電力供給を遮断する方法で計画停電を実施している事例がある。このように、強制的に電力供給を遮断する方法で繰り返し停電を実施すると、空気調和機に負荷がかかり故障の原因となってしまうという問題があった。 However, some users who manage the operation of their air conditioners implement planned power outages not by using power consumption as in the technology disclosed in Patent Document 1, but by installing a timer in the distribution board and forcibly cutting off the power supply at a specified time. In this way, repeated power outages that forcibly cut off the power supply place a strain on the air conditioner, which can cause it to break down, creating a problem.
　本開示は、上記に鑑みてなされたものであって、強制的に電力供給が遮断される環境であっても、空気調和機にかかる負荷を低減することが可能な空気調和システムを得ることを目的とする。 The present disclosure has been made in consideration of the above, and aims to provide an air conditioning system that can reduce the load on the air conditioner even in an environment where the power supply is forcibly cut off.
　上述した課題を解決し、目的を達成するために、本開示に係る空気調和システムは、空気調和機に供給される電源電圧に基づいて停電が発生したことを検知する検知部と、検知部が検知した停電の発生日時を含む停電発生情報に基づいて、次回の停電の発生予測日時を推定する推定部と、推定された発生予測日時に基づいて、次回の停電が発生するよりも前に、空気調和機の運転を停止させる制御部と、を備える。 In order to solve the above-mentioned problems and achieve the objectives, the air conditioning system disclosed herein includes a detection unit that detects the occurrence of a power outage based on the power supply voltage supplied to the air conditioner, an estimation unit that estimates the predicted date and time of the next power outage based on power outage occurrence information including the date and time of the power outage detected by the detection unit, and a control unit that stops operation of the air conditioner before the next power outage occurs based on the estimated predicted date and time.
　本開示によれば、強制的に電力供給が遮断される環境であっても、空気調和機にかかる負荷を低減することが可能な空気調和システムを得ることができるという効果を奏する。 The present disclosure has the effect of providing an air conditioning system that can reduce the load on the air conditioner, even in an environment where the power supply is forcibly cut off.
実施の形態１に係る空気調和システムの概略構成を示す図FIG. 1 is a diagram showing a schematic configuration of an air conditioning system according to a first embodiment. 図１に示す手元操作部の構成例を示す図FIG. 2 is a diagram showing an example of the configuration of a handheld operation unit shown in FIG. 1 ; 実施の形態１にかかる空気調和システムが停電を検知する手順を説明するためのフローチャートA flowchart for explaining a procedure for detecting a power outage by the air conditioning system according to the first embodiment 実施の形態１にかかる空気調和システムの室内機の制御手順について説明するためのフローチャートA flowchart for explaining a control procedure for an indoor unit of an air conditioning system according to the first embodiment. 停電の発生予測日時が経過した後の室内機の制御手順について説明するためのフローチャートA flowchart for explaining the control procedure of the indoor unit after the predicted date and time of a power outage has passed. 実施の形態２にかかる空気調和システムの概略構成を示す図FIG. 1 is a diagram showing a schematic configuration of an air conditioning system according to a second embodiment. 実施の形態１，２にかかる空気調和システムの機能を実現するための制御回路の構成を示す図FIG. 1 is a diagram showing the configuration of a control circuit for implementing the functions of the air conditioning system according to the first and second embodiments. 実施の形態１，２にかかる空気調和システムの機能を実現するための専用のハードウェアを示す図FIG. 1 is a diagram showing dedicated hardware for realizing the functions of the air conditioning system according to the first and second embodiments.
　以下に、本開示の実施の形態に係る空気調和システムおよび空気調和システムの制御方法を図面に基づいて詳細に説明する。図面において、同一の符号を用いているものは、同一または同様の機能を有するものであり、以下に記載する実施の形態全文において共通することとする。また、明細書全文に表されている構成要素の形態は一例であり、明細書に記載された形態に限定するものではない。 Below, an air conditioning system and a method for controlling an air conditioning system according to an embodiment of the present disclosure will be described in detail with reference to the drawings. In the drawings, the same reference numerals are used to refer to components that have the same or similar functions, and these are common throughout the embodiments described below. Furthermore, the forms of the components shown in the entire specification are examples, and are not limited to the forms described in the specification.
実施の形態１．
　図１は、実施の形態１に係る空気調和システム１００の概略構成を示す図である。実施の形態１にかかる空気調和システム１００は、室外機１と、室内機２と、手元操作部３とを有する。以下、室外機１および室内機２を合わせて、空気調和機と称することがある。なお、図１では１台の室外機１に対して１台の室内機２を接続しているが、１台の室外機１に対して複数台の室内機２を接続することも可能である。 Embodiment 1.
Fig. 1 is a diagram showing a schematic configuration of an air conditioning system 100 according to embodiment 1. The air conditioning system 100 according to embodiment 1 has an outdoor unit 1, an indoor unit 2, and a handheld operation unit 3. Hereinafter, the outdoor unit 1 and the indoor unit 2 may be collectively referred to as an air conditioner. Note that, although one indoor unit 2 is connected to one outdoor unit 1 in Fig. 1, it is also possible to connect multiple indoor units 2 to one outdoor unit 1.
　空気調和システム１００は、電源４から電力の供給を受けている。図１では、室外機１が電源４に接続されており、電源４は、室外機１を通じて空気調和システム１００に給電している。なお、電源４は室内機２に接続して室内機２から給電してもよい。 The air conditioning system 100 receives power from a power source 4. In FIG. 1, the outdoor unit 1 is connected to the power source 4, and the power source 4 supplies power to the air conditioning system 100 through the outdoor unit 1. Note that the power source 4 may also be connected to the indoor unit 2 and supply power from the indoor unit 2.
　室外機１は、検知部１１と、制御部１２と、通信部１３とを有する。検知部１１は、電源電圧に基づいて、停電が発生したことを検知する。具体的には、検知部１１は、電源電圧値にしきい値を設定して、電源電圧値がしきい値を下回ると停電が発生したと判断し、制御部１２に停電が発生したことを通知する停電情報を出力する。制御部１２は、検知部１１が停電情報を出力すると、電源供給が完全に遮断される前に、検知部１１が出力した停電情報に停電発生日時を含むタイムスタンプを付加した停電発生情報を生成し、生成した停電発生情報を、通信部１３を介して、室内機２の通信部２３に送信する。 The outdoor unit 1 has a detection unit 11, a control unit 12, and a communication unit 13. The detection unit 11 detects the occurrence of a power outage based on the power supply voltage. Specifically, the detection unit 11 sets a threshold value for the power supply voltage value, and determines that a power outage has occurred when the power supply voltage value falls below the threshold value, and outputs power outage information to notify the control unit 12 of the occurrence of a power outage. When the detection unit 11 outputs the power outage information, the control unit 12 generates power outage occurrence information by adding a timestamp including the date and time of the power outage to the power outage information output by the detection unit 11 before the power supply is completely cut off, and transmits the generated power outage occurrence information to the communication unit 23 of the indoor unit 2 via the communication unit 13.
　室内機２は、推定部２１と、制御部２２と、通信部２３と、局所気象情報受信部２４とを有する。 The indoor unit 2 has an estimation unit 21, a control unit 22, a communication unit 23, and a local weather information receiving unit 24.
　通信部２３は、室外機１の通信部１３と通信する機能を有し、通信部１３から送信された停電発生情報を受信する。通信部２３は、受信した停電発生情報を、制御部２２を通じて、推定部２１に受け渡す。 The communication unit 23 has a function of communicating with the communication unit 13 of the outdoor unit 1, and receives the power outage occurrence information transmitted from the communication unit 13. The communication unit 23 passes the received power outage occurrence information to the estimation unit 21 via the control unit 22.
　局所気象情報受信部２４は、空気調和機の室内機２が設置された場所における気象情報を空気調和システム１００の外部から受信する。局所気象情報受信部２４は、受信した気象情報から現在の気象情報および未来の気象予報情報、例えば数時間後の気象情報を取得する。局所気象情報受信部２４は、記憶部２４ａを有しており、取得した気象情報を記憶部２４ａに一時的に保存する。記憶部２４ａは、揮発性メモリであるが、一時的に保存することができるものであれば、どのような記憶媒体、記憶装置であってもよい。 The local weather information receiving unit 24 receives weather information for the location where the air conditioner indoor unit 2 is installed from outside the air conditioning system 100. The local weather information receiving unit 24 acquires current weather information and future weather forecast information, for example weather information for several hours from now, from the received weather information. The local weather information receiving unit 24 has a memory unit 24a, and temporarily stores the acquired weather information in the memory unit 24a. The memory unit 24a is a volatile memory, but may be any storage medium or storage device that is capable of temporary storage.
　推定部２１は、演算部２１ａと記憶部２１ｂとを有する。 The estimation unit 21 has a calculation unit 21a and a memory unit 21b.
　推定部２１は、通信部２３および制御部２２を介して室外機１から受信した停電発生情報と、記憶部２４ａに記憶された気象情報とを取得し、記憶部２１ｂに保存する。このとき、推定部２１は、停電発生情報が示す停電発生日時と同日時の気象情報を取得して記憶部２１ｂに保存することができる。また、推定部２１は、停電発生情報と気象情報との履歴情報を、停電履歴情報として蓄積し、データベース化して記憶部２１ｂに保存することができる。記憶部２１ｂは、不揮発性メモリであるが、不揮発的に保持することができるものであれば、どのような記憶媒体、記憶装置であってもよい。 The estimation unit 21 acquires the power outage information received from the outdoor unit 1 via the communication unit 23 and the control unit 22, and the weather information stored in the memory unit 24a, and stores them in the memory unit 21b. At this time, the estimation unit 21 can acquire the weather information for the same date and time as the power outage date and time indicated by the power outage information, and store it in the memory unit 21b. The estimation unit 21 can also accumulate the history information of the power outage information and the weather information as power outage history information, and store it in a database in the memory unit 21b. The memory unit 21b is a non-volatile memory, but may be any storage medium or storage device as long as it can be retained in a non-volatile manner.
　演算部２１ａは、記憶部２１ｂに保存された過去の停電履歴情報に基づいて、次回の停電の発生予測日時を推定する。次回の停電の発生予測日時を算出する方法としては、過去の停電履歴情報を時系列信号として、統計解析で次回の停電の発生予測日時を求める、自己回帰モデル、移動平均モデルなどを用いることができる。また、停電履歴情報からロジスティック回帰モデルを生成し、日時と気象情報とを入力すると、停電発生確率を求める方法などがあるが、限定されない。演算部２１ａは、算出した次回の停電の発生予測日時を記憶部２１ｂに保存する。 The calculation unit 21a estimates the predicted date and time of the next power outage based on the past power outage history information stored in the memory unit 21b. As a method for calculating the predicted date and time of the next power outage, an autoregressive model, a moving average model, or the like can be used, which uses past power outage history information as a time series signal to determine the predicted date and time of the next power outage through statistical analysis. In addition, there is a method, but is not limited to this, in which a logistic regression model is generated from the power outage history information, and the probability of a power outage is calculated by inputting the date and time and weather information. The calculation unit 21a stores the calculated predicted date and time of the next power outage in the memory unit 21b.
　制御部２２は、推定部２１の記憶部２１ｂに保存された、次回の停電の発生予測日時に基づいて、空気調和機の制御を行う。具体的には、制御部２２は、次回の停電の発生予測日時に基づいて、次回の停電が発生するよりも前に、空気調和機の運転を停止させる。これにより、停電が発生した時点で空気調和機は運転を停止した状態となり、空気調和機の運転中に、停電により強制的に空気調和機への電力供給が遮断されて空気調和機に負荷がかかることを予防することができる。 The control unit 22 controls the air conditioner based on the predicted date and time of the next power outage, which is stored in the memory unit 21b of the estimation unit 21. Specifically, the control unit 22 stops operation of the air conditioner before the next power outage occurs, based on the predicted date and time of the next power outage. This brings the air conditioner into a stopped state when a power outage occurs, and prevents the air conditioner from being overloaded by being forcibly cut off from the power supply to the air conditioner while it is operating due to a power outage.
　また、制御部２２は、次回の停電の発生予測日時に基づいて、次回の停電が発生する前であって空気調和機の運転を停止させる前に、空気調和機に予冷運転または予暖運転を実施させる。予冷運転および予暖運転は、空気調和機の運転を停止させた後のしばらくの期間もユーザにとって快適な室内環境を維持するために空気調和機を運転させることを言う。例えば、ユーザは、空気調和機の機能設定で、事前に、予冷運転および予暖運転に関する設定を行うことができる。設定する項目としては、室内温度を何度にしたいかを示す設定温度、快適な室内環境を何時間維持したいかを示す継続時間などが挙げられる。予冷運転および予暖運転において、制御部２２は、例えば、空気調和機を停止させる時点においてユーザが指定する設定値となるように空気調和機の設定温度、風量などを調整することができる。また、制御部２２は、空気調和機を停止させた後、設定された継続時間の間、ユーザにとって快適な室内環境を維持できるように、設定温度を調整してもよい。例えば予冷運転の場合、制御部２２は設定された継続時間が長いほど、設定温度を低めに調整することができる。予暖運転の場合、制御部２２は、設定された継続時間が長いほど、設定温度を高めに調整することができる。なお、ユーザによって、または、季節によって、予冷運転および予暖運転を必要としない場合があるため、制御内容については適宜変更することができる。 In addition, the control unit 22 causes the air conditioner to perform pre-cooling operation or pre-warming operation before the next power outage occurs and before the operation of the air conditioner is stopped, based on the predicted date and time of the next power outage. Pre-cooling operation and pre-warming operation refer to operating the air conditioner to maintain a comfortable indoor environment for the user for a while after the operation of the air conditioner is stopped. For example, the user can set the pre-cooling operation and pre-warming operation in advance in the function settings of the air conditioner. Items to be set include a set temperature indicating the desired indoor temperature, and a duration indicating how long a comfortable indoor environment is to be maintained. In the pre-cooling operation and pre-warming operation, the control unit 22 can adjust the set temperature, air volume, etc. of the air conditioner to the set value specified by the user at the time the air conditioner is stopped, for example. In addition, the control unit 22 may adjust the set temperature so that a comfortable indoor environment for the user can be maintained for the set duration after the air conditioner is stopped. For example, in the case of pre-cooling operation, the control unit 22 can adjust the set temperature lower the longer the set duration. In the case of pre-warming operation, the control unit 22 can adjust the set temperature higher the longer the set duration. Note that, depending on the user or the season, pre-cooling operation and pre-warming operation may not be required, so the control content can be changed as appropriate.
　なお、予冷運転または予暖運転を開始するタイミングは、次回の停電の発生予測日時および空気調和機の運転を停止させるタイミングよりも前であって、空気調和機の運転を停止させるまでに室内温度を設定温度まで変化させることが可能な時間長に基づいて定められる。また、空気調和機の運転を停止させるタイミングは、次回の停電の発生予測日時が到来するまでに空気調和機の運転を安全に停止させることができるように、制御部２２が運転停止制御を開始してから実際に空気調和機の運転が停止するまでにかかる時間に基づいて定められる。また、予冷運転または予暖運転を開始するタイミングにおいて、空気調和機の運転が停止している場合には、制御部２２は、予冷運転および予暖運転を行わなくてもよい。また、ユーザが、予め、予冷運転および予暖運転に関する設定において、予冷運転または予暖運転を開始するタイミングにおいて、空気調和機の運転が停止している場合に、予冷運転または予暖運転を行うか否かを選択することができるようにしてもよい。予冷運転または予暖運転を開始するタイミングにおいて、空気調和機の運転が停止している場合に、予冷運転または予暖運転を行うように設定されている場合、制御部２２は、予め空気調和機が停止している場合であっても、予冷運転または予暖運転を行うように空気調和機を制御する。 The timing to start pre-cooling or pre-warming operation is determined based on the length of time that the indoor temperature can be changed to the set temperature before the air conditioner is stopped, prior to the predicted date and time of the next power outage and the timing to stop the operation of the air conditioner. The timing to stop the operation of the air conditioner is determined based on the time it takes from when the control unit 22 starts the operation stop control until the operation of the air conditioner is actually stopped, so that the operation of the air conditioner can be safely stopped before the predicted date and time of the next power outage. If the operation of the air conditioner is stopped at the time to start pre-cooling or pre-warming operation, the control unit 22 does not need to perform pre-cooling or pre-warming operation. The user may be able to select in advance in the settings related to pre-cooling and pre-warming operation whether or not to perform pre-cooling or pre-warming operation if the operation of the air conditioner is stopped at the time to start pre-cooling or pre-warming operation. If the air conditioner is stopped at the timing to start pre-cooling operation or pre-warming operation and is set to perform pre-cooling operation or pre-warming operation, the control unit 22 controls the air conditioner to perform pre-cooling operation or pre-warming operation even if the air conditioner has already been stopped.
　制御部２２は、室外機１の制御部１２に運転停止制御の実施を指示して、空気調和機の運転を停止させる。また、制御部２２は、次回の停電の発生予測日時が到来したときに、実際に停電が発生したか否かを判断し、停電が発生しなかった場合には、発生予測日時に停電が発生しなかったことを記憶部２１ｂに記録し、停電が発生した場合には、実際に停電が発生したことを記憶部２１ｂに記録する。 The control unit 22 instructs the control unit 12 of the outdoor unit 1 to perform operation stop control, and stops the operation of the air conditioner. Furthermore, when the predicted date and time of the next power outage arrives, the control unit 22 determines whether or not a power outage has actually occurred, and if a power outage has not occurred, records in the memory unit 21b that no power outage occurred at the predicted date and time, and if a power outage has occurred, records in the memory unit 21b that a power outage has actually occurred.
　推定部２１の記憶部２１ｂに保存された停電履歴情報、発生予測日時、および実際に停電したか否かの結果は、例えば機械学習等を用いて、停電の発生予測日時を算出する際の予測精度向上のために使用することができる。 The power outage history information, predicted occurrence date and time, and the result of whether or not a power outage actually occurred stored in the memory unit 21b of the estimation unit 21 can be used, for example, by machine learning, to improve the prediction accuracy when calculating the predicted occurrence date and time of a power outage.
　手元操作部３は、空気調和機の操作をユーザの手元で行うためのリモートコントローラである。図２は、図１に示す手元操作部３の構成例を示す図である。手元操作部３は、ユーザに情報を提供するための表示部３１と、ユーザが操作するための操作部３２とを有する。手元操作部３は、表示部３１を用いて、次回の停電の発生予測日時、設定温度などを表示することができる。また、手元操作部３は、表示部３１を用いて、予冷運転中であること、または予暖運転中であることを表示することができる。 The handheld operation unit 3 is a remote controller for operating the air conditioner at the user's hand. FIG. 2 is a diagram showing an example of the configuration of the handheld operation unit 3 shown in FIG. 1. The handheld operation unit 3 has a display unit 31 for providing information to the user, and an operation unit 32 for the user to operate. The handheld operation unit 3 can use the display unit 31 to display the predicted date and time of the next power outage, the set temperature, etc. The handheld operation unit 3 can also use the display unit 31 to display whether the unit is in pre-cooling operation or pre-warming operation.
　図３は、実施の形態１にかかる空気調和システム１００が停電を検知する手順を説明するためのフローチャートである。室外機１の検知部１１は、電源電圧値がしきい値を下回ったか否かに基づいて、電源電圧が低下したか否かを判断する（ステップＳ１）。電源電圧が低下していない場合（ステップＳ１：Ｎｏ）、図３のフローを終了する。電源電圧が低下した場合（ステップＳ１：Ｙｅｓ）、停電が発生した日時を示す停電発生情報を室外機１から室内機２に送信する（ステップＳ２）。具体的には、検知部１１が電源電圧の低下を検知すると、制御部１２に停電の発生を通知する停電情報を出力し、制御部１２は、停電情報に停電の発生日時を示すタイムスタンプを付加した停電発生情報を生成し、生成した停電発生情報を通信部１３を介して室内機２に送信する。室内機２は、室外機１から送信された停電発生情報を、記憶部２１ｂに記憶させる（ステップＳ３）。 FIG. 3 is a flow chart for explaining the procedure for the air conditioning system 100 according to the first embodiment to detect a power outage. The detection unit 11 of the outdoor unit 1 judges whether the power supply voltage has dropped based on whether the power supply voltage value has fallen below a threshold value (step S1). If the power supply voltage has not dropped (step S1: No), the flow of FIG. 3 ends. If the power supply voltage has dropped (step S1: Yes), power outage occurrence information indicating the date and time of the power outage is transmitted from the outdoor unit 1 to the indoor unit 2 (step S2). Specifically, when the detection unit 11 detects a drop in the power supply voltage, it outputs power outage information notifying the control unit 12 of the occurrence of a power outage, and the control unit 12 generates power outage occurrence information by adding a timestamp indicating the date and time of the power outage to the power outage information, and transmits the generated power outage occurrence information to the indoor unit 2 via the communication unit 13. The indoor unit 2 stores the power outage occurrence information transmitted from the outdoor unit 1 in the memory unit 21b (step S3).
　なお、図３に示す手順は、例えば、定期的に実行される。また、上記のステップＳ３において、室内機２が停電発生情報を記憶部２１ｂに記憶させる際には、局所気象情報受信部２４が取得した、停電発生日時の気象情報を付加して、停電履歴情報として記憶させる。 The procedure shown in FIG. 3 is executed periodically, for example. In addition, when the indoor unit 2 stores the power outage occurrence information in the memory unit 21b in step S3, the weather information for the date and time of the power outage acquired by the local weather information receiving unit 24 is added and stored as power outage history information.
　図４は、実施の形態１にかかる空気調和システム１００の室内機２の制御手順について説明するためのフローチャートである。室内機２の推定部２１は、運転中であるか否かを判断する（ステップＳ１１）。運転中でない場合（ステップＳ１１：Ｎｏ）、図４のフローを終了する。運転中の場合（ステップＳ１１：Ｙｅｓ）、推定部２１は、次回の停電の発生予測日時を推定する（ステップＳ１２）。なお、このとき推定部２１は、図２に示したように、推定した次回の停電の発生予測日時を、手元操作部３の表示部３１を用いて表示させてもよい。 FIG. 4 is a flowchart for explaining the control procedure of the indoor unit 2 of the air conditioning system 100 according to the first embodiment. The estimation unit 21 of the indoor unit 2 judges whether or not it is in operation (step S11). If it is not in operation (step S11: No), the flow of FIG. 4 ends. If it is in operation (step S11: Yes), the estimation unit 21 estimates the predicted date and time of the next power outage (step S12). At this time, the estimation unit 21 may display the estimated predicted date and time of the next power outage using the display unit 31 of the handheld operation unit 3, as shown in FIG. 2.
　室内機２の制御部２２は、次回の停電の発生予測日時よりも前に予冷運転または予暖運転を実施する（ステップＳ１３）。このとき制御部２２は、図２に示したように、予冷運転中または予暖運転中であることを、手元操作部３の表示部３１を用いて表示させてもよい。 The control unit 22 of the indoor unit 2 performs pre-cooling operation or pre-warming operation before the predicted date and time of the next power outage (step S13). At this time, the control unit 22 may display, using the display unit 31 of the handheld operation unit 3, that the pre-cooling operation or pre-warming operation is in progress, as shown in FIG. 2.
　制御部２２は、次回の停電の発生予測日時に基づいて、次回の停電が発生するよりも前に、空気調和機の運転を停止させる（ステップＳ１４）。空気調和機の運転を停止させた後、次回の停電の発生予測日時が経過すると（ステップＳ１５）、室内機２は、図４のフローを終了する。 The control unit 22 stops operation of the air conditioner before the next power outage occurs based on the predicted date and time of the next power outage (step S14). After the operation of the air conditioner is stopped, when the predicted date and time of the next power outage has passed (step S15), the indoor unit 2 ends the flow of FIG. 4.
　図５は、停電の発生予測日時が経過した後の室内機２の制御手順について説明するためのフローチャートである。図４に示すフローが終了した後、図５に示す手順が実行される。室内機２の制御部２２は、停電の発生予測日時が経過した後に、実際に停電が発生したか否かを判断する（ステップＳ２１）。上述の通り、図３に示す手順が定期的に実行されているため、停電が発生した場合には、図３のステップＳ２において、室外機１から停電発生情報が送信される。このため、制御部２２は、室外機１から停電発生情報を受信したか否かに基づいて、停電が発生したか否かを判断することができる。 FIG. 5 is a flowchart for explaining the control procedure of the indoor unit 2 after the predicted date and time of the power outage has passed. After the flow shown in FIG. 4 is completed, the procedure shown in FIG. 5 is executed. The control unit 22 of the indoor unit 2 determines whether or not a power outage has actually occurred after the predicted date and time of the power outage has passed (step S21). As described above, the procedure shown in FIG. 3 is executed periodically, so when a power outage occurs, power outage occurrence information is sent from the outdoor unit 1 in step S2 of FIG. 3. Therefore, the control unit 22 can determine whether or not a power outage has occurred based on whether or not power outage occurrence information has been received from the outdoor unit 1.
　停電が発生した場合（ステップＳ２１：Ｙｅｓ）、制御部２２は、次回の運転再開時に、停電の発生予測日時に停電が発生したことを記憶部２１ｂに記憶させ（ステップＳ２２）、図５のフローを終了する。なお、停電が発生した場合には、図３のステップＳ１～ステップＳ３の処理も実行されるため、停電履歴情報もあわせて記憶される。停電が発生しなかった場合（ステップＳ２１：Ｎｏ）、制御部２２は、停電の発生予測日時に停電が発生しなかったことを記憶部２１ｂに記憶させ（ステップＳ２３）、図５のフローを終了する。 If a power outage occurs (step S21: Yes), the control unit 22 stores in the memory unit 21b the fact that a power outage occurred on the predicted date and time when operation is next resumed (step S22), and ends the flow of FIG. 5. If a power outage occurs, the processes of steps S1 to S3 in FIG. 3 are also executed, and power outage history information is also stored. If a power outage does not occur (step S21: No), the control unit 22 stores in the memory unit 21b the fact that a power outage did not occur on the predicted date and time (step S23), and ends the flow of FIG. 5.
　また、停電の発生予測日時と異なる時刻に停電が発生した場合には、図３の処理が実行されることによって、記憶部２１ｂに停電履歴情報が記憶される。 In addition, if a power outage occurs at a time different from the predicted date and time of the power outage, the process shown in FIG. 3 is executed, and power outage history information is stored in the memory unit 21b.
　なお、図１に示した機能構成は一例であり、検知部１１は室内機２に構成されてもよいし、推定部２１および局所気象情報受信部２４は、室外機１に構成されてもよい。推定部２１および局所気象情報受信部２４が室外機１に構成される場合、例えば、推定結果である次回の停電の発生予測日時を推定部２１から室内機２の制御部２２に通知し、制御部２２が予冷運転または予暖運転を実施し、室外機１の制御部１２が、停電が発生する前に空気調和機の運転を停止させることができる。 The functional configuration shown in FIG. 1 is an example, and the detection unit 11 may be configured in the indoor unit 2, and the estimation unit 21 and local weather information receiving unit 24 may be configured in the outdoor unit 1. When the estimation unit 21 and local weather information receiving unit 24 are configured in the outdoor unit 1, for example, the estimation unit 21 can notify the control unit 22 of the indoor unit 2 of the predicted date and time of the next power outage, which is the estimation result, and the control unit 22 can perform pre-cooling operation or pre-warming operation, and the control unit 12 of the outdoor unit 1 can stop operation of the air conditioner before a power outage occurs.
　以上説明したように、実施の形態１にかかる空気調和システム１００は、空気調和機に供給される電源電圧に基づいて停電が発生したことを検知する検知部１１と、検知部１１が検知した停電の発生日時を含む停電発生情報に基づいて、次回の停電の発生予測日時を推定する推定部２１と、推定された発生予測日時に基づいて、次回の停電が発生するよりも前に、空気調和機の運転を停止させる制御部２２と、を備える。また、実施の形態１にかかる空気調和システム１００の制御方法は、電源電圧に基づいて停電が発生したことを検知するステップと、検知した停電の発生日時を含む停電発生情報に基づいて、次回の停電の発生予測日時を推定するステップと、推定された発生予測日時に基づいて、次回の停電が発生するよりも前に、空気調和機の運転を停止させるステップと、を含む。かかる構成により、次回の停電が発生する際には、空気調和機の運転が停止しているため、強制的に電力供給が遮断される環境であっても、空気調和機にかかる負荷を低減することが可能になる。空気調和機の運転中に電力供給が強制的に遮断されると、空気調和機の故障につながる場合があるため、そのような故障を防止することができる。 As described above, the air conditioning system 100 according to the first embodiment includes a detection unit 11 that detects the occurrence of a power outage based on the power supply voltage supplied to the air conditioner, an estimation unit 21 that estimates the predicted date and time of the next power outage based on the power outage occurrence information including the date and time of the power outage detected by the detection unit 11, and a control unit 22 that stops the operation of the air conditioner before the next power outage occurs based on the estimated predicted date and time. The control method of the air conditioning system 100 according to the first embodiment includes a step of detecting the occurrence of a power outage based on the power supply voltage, a step of estimating the predicted date and time of the next power outage based on the power outage occurrence information including the date and time of the detected power outage, and a step of stopping the operation of the air conditioner before the next power outage occurs based on the estimated predicted date and time. With this configuration, when the next power outage occurs, the operation of the air conditioner is stopped, so it is possible to reduce the load on the air conditioner even in an environment where the power supply is forcibly cut off. If the power supply is forcibly cut off while the air conditioner is operating, this may lead to a breakdown of the air conditioner, and such a breakdown can be prevented.
　また、空気調和システム１００は、空気調和機が設置された場所における気象情報を取得する局所気象情報受信部２４をさらに備え、推定部２１は、停電発生情報に加えて、気象情報に基づいて、次回の停電の発生日時を推定する。なお、局所気象情報受信部２４は、過去の停電の発生日時における気象情報と、未来の気象情報とを取得する。未来の気象情報は、例えば、現時点から数時間後までの気象情報とすることができる。かかる構成により、気象条件によって停電が発生するか否かが変わる場合であっても、正確に次回の停電の発生日時を推定することが可能になる。したがって、次回の停電が発生する際に、空気調和機の運転が停止している可能性を高めることが可能になり、強制的に電力供給が遮断される環境であっても、空気調和機にかかる負荷を低減することができる確率を高めることができる。 The air conditioning system 100 further includes a local weather information receiving unit 24 that acquires weather information for the location where the air conditioner is installed, and the estimation unit 21 estimates the date and time of the next power outage based on the weather information in addition to the power outage occurrence information. The local weather information receiving unit 24 acquires weather information for the date and time of past power outages and future weather information. The future weather information can be, for example, weather information for up to several hours from the present time. With this configuration, it is possible to accurately estimate the date and time of the next power outage, even if the occurrence of a power outage depends on the weather conditions. Therefore, it is possible to increase the possibility that the operation of the air conditioner will be stopped when the next power outage occurs, and it is possible to increase the probability that the load on the air conditioner can be reduced even in an environment where the power supply is forcibly cut off.
　なお、検知部１１は、空気調和機に供給される電源電圧の低下から停電が発生したことを検知する。また、空気調和システム１００は、停電発生情報と、推定部２１によって推定された次回の停電の発生予測日時とを記憶する記憶部２１ｂをさらに備えてもよい。 The detection unit 11 detects the occurrence of a power outage from a drop in the power supply voltage supplied to the air conditioner. The air conditioning system 100 may further include a memory unit 21b that stores power outage occurrence information and the predicted date and time of the next power outage estimated by the estimation unit 21.
　推定部２１は、過去の停電発生情報と、気象情報とを統計解析することによって、次回の停電の発生予測日時を推定する。具体的には、推定部２１は、過去の停電履歴情報を時系列信号として、統計解析で次回の停電の発生予測日時を求める、自己回帰モデル、移動平均モデルなどを用いることができる。また、推定部２１は、停電履歴情報からロジスティック回帰モデルを生成し、ロジスティック回帰モデルに日時と気象情報とを入力すると、停電発生確率を求める方法などを用いてもよい。 The estimation unit 21 estimates the predicted date and time of the next power outage by performing statistical analysis on past power outage occurrence information and weather information. Specifically, the estimation unit 21 can use an autoregression model, a moving average model, or the like, which uses past power outage history information as a time-series signal to determine the predicted date and time of the next power outage through statistical analysis. The estimation unit 21 can also use a method in which a logistic regression model is generated from the power outage history information, and the date and time and weather information are input into the logistic regression model to determine the probability of a power outage occurring.
　また、空気調和システム１００において、制御部２２は、次回の停電の発生予測日時に基づいて、空気調和機の運転を停止させるよりも前に、予冷運転または予暖運転を実施させる。これにより、強制的に電力供給が遮断された後も、しばらくの期間はユーザにとって快適な室内環境を維持することが可能になる。 In addition, in the air conditioning system 100, the control unit 22 performs pre-cooling or pre-heating operation before stopping the operation of the air conditioner based on the predicted date and time of the next power outage. This makes it possible to maintain a comfortable indoor environment for the user for a certain period of time even after the power supply is forcibly cut off.
　また、空気調和システム１００は、次回の停電の発生予測日時を表示する手元操作部３をさらに備えることができる。手元操作部３に表示されることで、ユーザは、事前に次回の停電が起こり得る日時を把握することが可能になる。 The air conditioning system 100 can further include a remote control unit 3 that displays the predicted date and time of the next power outage. By displaying this on the remote control unit 3, the user can know in advance the date and time of the next power outage.
　また、手元操作部３は、次回の停電の発生予測日時と、予冷運転中または予暖運転中であることと、を表示することもできる。これにより、ユーザは、事前に次回の停電が起こり得る日時を把握することが可能になると共に、次回の停電に向けて予冷運転または予暖運転が行われていることを把握することができる。 The handheld control unit 3 can also display the predicted date and time of the next power outage and whether pre-cooling or pre-warming operation is in progress. This allows the user to know in advance the date and time of the next power outage, and to know that pre-cooling or pre-warming operation is in progress in preparation for the next power outage.
実施の形態２．
　図６は、実施の形態２にかかる空気調和システム２００の概略構成を示す図である。実施の形態１では、１台の室外機１に対して１台の室内機２が接続されていたが、空気調和システム２００は、１台の室外機１に対して複数台の室内機２－１～２－４が接続されている。ここでは、４台の室内機２－１～２－４が示されているが、これに限らず、室内機２の数に制限はない。 Embodiment 2.
6 is a diagram showing a schematic configuration of an air conditioning system 200 according to embodiment 2. In embodiment 1, one indoor unit 2 is connected to one outdoor unit 1, but in the air conditioning system 200, a plurality of indoor units 2-1 to 2-4 are connected to one outdoor unit 1. Here, four indoor units 2-1 to 2-4 are shown, but the present invention is not limited to this, and there is no limit to the number of indoor units 2.
　この場合、図１で説明した室内機２の機能は、必ずしも全ての室内機２－１～２－４に備えられる必要はないため、室内機２－１～２－４のうちの１台が図１で説明した室内機２の機能を有すればよい。例えば、室外機１と直接接続された室内機２－１が図１で説明したように、気象情報を取得する局所気象情報受信部２４と、次回の停電の発生予測日時を推定する推定部２１と、停電が発生する前に空気調和機の運転を終了させる制御部２２とを有する構成とすることができる。この場合、予冷運転または予暖運転の実施については、例えば、推定部２１を有する室内機２－１が推定結果である次回の停電の発生予測日時を各室内機２－２～２－４に通知して、室内機２－１～２－４のそれぞれにおいて、予冷運転または予暖運転の開始日時を決定することができる。 In this case, the function of the indoor unit 2 described in FIG. 1 does not necessarily need to be provided in all indoor units 2-1 to 2-4, so it is sufficient that one of the indoor units 2-1 to 2-4 has the function of the indoor unit 2 described in FIG. 1. For example, as described in FIG. 1, the indoor unit 2-1 directly connected to the outdoor unit 1 can be configured to have a local weather information receiving unit 24 that acquires weather information, an estimation unit 21 that estimates the predicted date and time of the next power outage, and a control unit 22 that ends the operation of the air conditioner before a power outage occurs. In this case, for example, to perform pre-cooling operation or pre-warming operation, the indoor unit 2-1 having the estimation unit 21 can notify each of the indoor units 2-2 to 2-4 of the predicted date and time of the next power outage, which is the estimation result, and the start date and time of the pre-cooling operation or pre-warming operation can be determined in each of the indoor units 2-1 to 2-4.
　また、実施の形態１でも説明したように、検知部１１は室内機２－１～２－４のいずれかに構成されてもよいし、推定部２１および局所気象情報受信部２４は、室外機１に構成されてもよい。 As explained in the first embodiment, the detection unit 11 may be configured in any of the indoor units 2-1 to 2-4, and the estimation unit 21 and local weather information receiving unit 24 may be configured in the outdoor unit 1.
　以上説明したように、実施の形態２にかかる空気調和システム２００のように、１台の室外機１に対して複数台の室内機２－１～２－４が接続されている場合であっても、実施の形態１にかかる空気調和システム１００と同様の効果を奏することができる。 As explained above, even when multiple indoor units 2-1 to 2-4 are connected to one outdoor unit 1, as in the air conditioning system 200 according to the second embodiment, the same effects as those of the air conditioning system 100 according to the first embodiment can be achieved.
　続いて、本開示の実施の形態１，２にかかる空気調和システム１００，２００のハードウェア構成について説明する。検知部１１、制御部１２、推定部２１、制御部２２および局所気象情報受信部２４は、処理回路により実現される。これらの処理回路は、専用のハードウェアにより実現されてもよいし、ＣＰＵ（Central　Processing　Unit）を用いた制御回路であってもよい。 Next, the hardware configuration of the air conditioning systems 100, 200 according to the first and second embodiments of the present disclosure will be described. The detection unit 11, the control unit 12, the estimation unit 21, the control unit 22, and the local weather information receiving unit 24 are realized by processing circuits. These processing circuits may be realized by dedicated hardware, or may be control circuits using a CPU (Central Processing Unit).
　上記の処理回路が、ＣＰＵを用いた制御回路で実現される場合、この制御回路は例えば図７に示す構成の制御回路９０である。図７は、実施の形態１，２にかかる空気調和システム１００，２００の機能を実現するための制御回路９０の構成を示す図である。図７に示すように、制御回路９０は、プロセッサ９１と、メモリ９２とを備える。プロセッサ９１は、ＣＰＵであり、中央処理装置、処理装置、演算装置、マイクロプロセッサ、マイクロコンピュータ、ＤＳＰ（Digital　Signal　Processor）などとも呼ばれる。メモリ９２は、例えば、ＲＡＭ（Random　Access　Memory）、ＲＯＭ（Read　Only　Memory）、フラッシュメモリ、ＥＰＲＯＭ（Erasable　Programmable　ＲＯＭ）、ＥＥＰＲＯＭ（登録商標）（Electrically　ＥＰＲＯＭ）などの不揮発性または揮発性の半導体メモリ、磁気ディスク、フレキシブルディスク、光ディスク、コンパクトディスク、ミニディスク、ＤＶＤ（Digital　Versatile　Disk）などである。 When the above processing circuit is realized by a control circuit using a CPU, this control circuit is, for example, a control circuit 90 having a configuration shown in FIG. 7. FIG. 7 is a diagram showing the configuration of the control circuit 90 for realizing the functions of the air conditioning systems 100 and 200 according to the first and second embodiments. As shown in FIG. 7, the control circuit 90 includes a processor 91 and a memory 92. The processor 91 is a CPU, and is also called a central processing unit, processing unit, arithmetic unit, microprocessor, microcomputer, DSP (Digital Signal Processor), etc. The memory 92 is, for example, a non-volatile or volatile semiconductor memory such as RAM (Random Access Memory), ROM (Read Only Memory), flash memory, EPROM (Erasable Programmable ROM), EEPROM (registered trademark) (Electrically EPROM), a magnetic disk, a flexible disk, an optical disk, a compact disk, a mini disk, a DVD (Digital Versatile Disk), etc.
　上記の処理回路が制御回路９０により実現される場合、プロセッサ９１がメモリ９２に記憶された、各構成要素の処理に対応するプログラムを読み出して実行することにより実現される。また、メモリ９２は、プロセッサ９１が実行する各処理における一時メモリとしても使用される。なお、プロセッサ９１が実行するプログラムは、記憶媒体に記憶された状態で提供されてもよいし、インターネットのような通信路を介して提供されてもよい。 When the above processing circuit is realized by the control circuit 90, it is realized by the processor 91 reading and executing a program stored in the memory 92 and corresponding to the processing of each component. The memory 92 is also used as a temporary memory for each process executed by the processor 91. The program executed by the processor 91 may be provided in a state stored in a storage medium, or may be provided via a communication path such as the Internet.
　上記の処理回路が、専用のハードウェアにより実現される場合、これらは、図８に示す処理回路９３により実現される。図８は、実施の形態１，２にかかる空気調和システム１００，２００の機能を実現するための専用のハードウェアを示す図である。処理回路９３は、単一回路、複合回路、プログラム化したプロセッサ、並列プログラム化したプロセッサ、ＡＳＩＣ（Application　Specific　Integrated　Circuit）、ＦＰＧＡ（Field　Programmable　Gate　Array）、またはこれらを組み合わせたものである。 When the above processing circuits are realized by dedicated hardware, they are realized by the processing circuit 93 shown in FIG. 8. FIG. 8 is a diagram showing dedicated hardware for realizing the functions of the air conditioning systems 100 and 200 according to the first and second embodiments. The processing circuit 93 is a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), or a combination of these.
　また、空気調和システム１００，２００の機能は、制御回路９０と専用のハードウェアである処理回路９３とを組み合わせることによって実現されてもよい。 Furthermore, the functions of the air conditioning systems 100 and 200 may be realized by combining the control circuit 90 with a processing circuit 93, which is dedicated hardware.
　以上の実施の形態に示した構成は、本開示の内容の一例を示すものであり、別の公知の技術と組み合わせることも可能であるし、本開示の要旨を逸脱しない範囲で、構成の一部を省略、変更することも可能である。 The configurations shown in the above embodiments are merely examples of the contents of this disclosure, and may be combined with other known technologies. Parts of the configurations may be omitted or modified without departing from the spirit of this disclosure.
　１　室外機、２，２－１～２－４　室内機、３　手元操作部、４　電源、１１　検知部、１２，２２　制御部、１３，２３　通信部、２１　推定部、２１ａ　演算部、２１ｂ，２４ａ　記憶部、２４　局所気象情報受信部、３１　表示部、３２　操作部、９０　制御回路、９１　プロセッサ、９２　メモリ、９３　処理回路、１００，２００　空気調和システム。 1 Outdoor unit, 2, 2-1 to 2-4 Indoor units, 3 Handheld operation unit, 4 Power supply, 11 Detection unit, 12, 22 Control unit, 13, 23 Communication unit, 21 Estimation unit, 21a Calculation unit, 21b, 24a Storage unit, 24 Local weather information receiving unit, 31 Display unit, 32 Operation unit, 90 Control circuit, 91 Processor, 92 Memory, 93 Processing circuit, 100, 200 Air conditioning system.

Claims (10)

  1. 　空気調和機に供給される電源電圧に基づいて停電が発生したことを検知する検知部と、
    　前記検知部が検知した停電の発生日時を含む停電発生情報に基づいて、次回の停電の発生予測日時を推定する推定部と、
    　推定された前記発生予測日時に基づいて、前記次回の停電が発生するよりも前に、前記空気調和機の運転を停止させる制御部と、
    　を備える空気調和システム。     A detection unit that detects the occurrence of a power outage based on a power supply voltage supplied to the air conditioner;
    An estimation unit that estimates a predicted date and time of the next power outage based on power outage occurrence information including the date and time of the power outage detected by the detection unit;
    a control unit that stops operation of the air conditioner before the next power outage occurs based on the estimated occurrence predicted date and time;
    An air conditioning system comprising:
  2. 　前記空気調和機が設置された場所における気象情報を取得する局所気象情報受信部、
    　をさらに備え、
    　前記推定部は、前記停電発生情報に加えて、前記気象情報に基づいて、前記次回の停電の発生日時を推定する請求項１に記載の空気調和システム。     a local weather information receiving unit that acquires weather information for a location where the air conditioner is installed;
    Further equipped with
    The air conditioning system according to claim 1 , wherein the estimation unit estimates a date and time of occurrence of the next power outage based on the weather information in addition to the power outage occurrence information.
  3. 　前記局所気象情報受信部は、過去の前記停電の発生日時における前記気象情報と、未来の前記気象情報とを取得する請求項２に記載の空気調和システム。 The air conditioning system according to claim 2, wherein the local weather information receiving unit acquires the weather information at the time and date when the power outage occurred in the past and the weather information for the future.
  4. 　前記検知部は、前記電源電圧の低下から前記停電が発生したことを検知する請求項１から３のいずれか１項に記載の空気調和システム。 The air conditioning system according to any one of claims 1 to 3, wherein the detection unit detects the occurrence of the power outage from a drop in the power supply voltage.
  5. 　前記停電発生情報と、前記推定部によって推定された前記次回の停電の前記発生予測日時とを記憶する記憶部、
    　をさらに備える請求項１から４のいずれか１項に記載の空気調和システム。     A storage unit that stores the power outage occurrence information and the predicted occurrence date and time of the next power outage estimated by the estimation unit;
    The air conditioning system according to claim 1 , further comprising:
  6. 　前記推定部は、過去の前記停電発生情報と、前記気象情報とを統計解析することによって、前記次回の停電の発生予測日時を推定する請求項２に記載の空気調和システム。 The air conditioning system according to claim 2, wherein the estimation unit estimates the predicted date and time of the next power outage by performing statistical analysis of the past power outage occurrence information and the weather information.
  7. 　前記制御部は、前記次回の停電の前記発生予測日時に基づいて、前記空気調和機の運転を停止させるよりも前に、予冷運転または予暖運転を実施させる請求項１から６のいずれか１項に記載の空気調和システム。 The air conditioning system according to any one of claims 1 to 6, wherein the control unit performs pre-cooling operation or pre-warming operation before stopping the operation of the air conditioner based on the predicted date and time of the next power outage.
  8. 　前記発生予測日時を表示する手元操作部、
    　をさらに備える請求項１から７のいずれか１項に記載の空気調和システム。     a handheld operation unit that displays the predicted occurrence date and time;
    The air conditioning system according to claim 1 , further comprising:
  9. 　前記発生予測日時と、予冷運転中または予暖運転中であることと、を表示する手元操作部、
    　をさらに備える請求項１から７のいずれか１項に記載の空気調和システム。     a handheld operation unit that displays the predicted occurrence date and time and that the pre-cooling operation or the pre-warming operation is in progress;
    The air conditioning system according to claim 1 , further comprising:
  10. 　電源電圧に基づいて停電が発生したことを検知するステップと、
    　検知した前記停電の発生日時を含む停電発生情報に基づいて、次回の停電の発生予測日時を推定するステップと、
    　推定された前記発生予測日時に基づいて、前記次回の停電が発生するよりも前に、空気調和機の運転を停止させるステップと、
    　を含む空気調和システムの制御方法。     detecting that a power outage has occurred based on a power supply voltage;
    A step of estimating a predicted date and time of the next power outage based on power outage occurrence information including the date and time of the detected power outage;
    stopping operation of the air conditioner before the next power outage occurs based on the estimated predicted occurrence date and time;
    A method for controlling an air conditioning system comprising:
PCT/JP2023/002200 2023-01-25 2023-01-25 Air conditioning system and method for controlling air conditioning system WO2024157373A1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11275983A (en) * 1998-03-30 1999-10-12 Koito Ind Ltd Device for growing plant
JP2000155601A (en) * 1998-11-18 2000-06-06 Sanyo Electric Co Ltd Controller and air conditioner provided with the controller
JP2013072568A (en) * 2011-09-27 2013-04-22 Toshiba Corp Air conditioner
JP2015204059A (en) * 2014-04-16 2015-11-16 日本電気株式会社 Information processing device for predicting power outage, information processing system, method for predicting power outage, and program therefor
JP2022115061A (en) * 2021-01-27 2022-08-08 三菱電機株式会社 Weather-related overhead distribution line failures online prediction

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11275983A (en) * 1998-03-30 1999-10-12 Koito Ind Ltd Device for growing plant
JP2000155601A (en) * 1998-11-18 2000-06-06 Sanyo Electric Co Ltd Controller and air conditioner provided with the controller
JP2013072568A (en) * 2011-09-27 2013-04-22 Toshiba Corp Air conditioner
JP2015204059A (en) * 2014-04-16 2015-11-16 日本電気株式会社 Information processing device for predicting power outage, information processing system, method for predicting power outage, and program therefor
JP2022115061A (en) * 2021-01-27 2022-08-08 三菱電機株式会社 Weather-related overhead distribution line failures online prediction

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