WO2021229964A1

WO2021229964A1 - Ventilation system

Info

Publication number: WO2021229964A1
Application number: PCT/JP2021/014952
Authority: WO
Inventors: 政之佐々木; 広法栗林; 歩小西; 大輔橋野; 列樹中島
Original assignee: パナソニックＩｐマネジメント株式会社
Priority date: 2020-05-14
Filing date: 2021-04-08
Publication date: 2021-11-18
Also published as: JPWO2021229964A1

Abstract

A central air conditioning system as an example of a ventilation system according to the present disclosure comprises ventilation devices (3-6), a carbon dioxide measurement unit (101a), a sleep preparation sensing unit (320), and a control unit (200). The ventilation devices (3-6) are provided to perform ventilation of a predetermined space. The carbon dioxide measurement unit (101a) measures the carbon dioxide concentration in the predetermined space. The sleep preparation sensing unit (320) senses that a user in the predetermined space is in a sleep preparation state. And, the control unit (200) controls ventilation provided by the ventilation devices (3-6) on the basis of the result of sensing by the sleep preparation sensing unit (320) and the carbon dioxide concentration measured by the carbon dioxide measurement unit (101a).

Description

Ventilation system

This disclosure relates to a ventilation system.

Conventionally, a ventilation system that controls the ventilation air volume of a ventilation device by the carbon dioxide concentration detected by the carbon dioxide detection unit in a room is known (for example, Patent Document 1).

Hereinafter, the ventilation system will be described with reference to FIG. FIG. 8 is a schematic connection diagram of the conventional ventilation system 1001.

As shown in FIG. 8, the ventilation system 1001 includes a ventilation device 1002, a control unit 1003, and a carbon dioxide detection unit 1004. The ventilation device 1002 is a device for replacing the air in the room. The carbon dioxide detection unit 1004 detects the carbon dioxide concentration in the room. The control unit 1003 controls the ventilation air volume of the ventilation device 1002 so that the carbon dioxide concentration in the room reaches the target value according to the carbon dioxide concentration in the room detected by the carbon dioxide detection unit 1004.

As a result, the ventilation system 1001 can reduce the carbon dioxide concentration in the room to a predetermined value or less, and realizes a comfortable environment in the room.

Japanese Unexamined Patent Publication No. 2013-124788

By the way, it is known that when the user goes from the state of being awake and active to the state of preparing to fall asleep, the user is more likely to fall asleep if the carbon dioxide concentration is high to some extent.

In the control of a conventional ventilation system such as the above-mentioned ventilation system 1001, ventilation by a ventilation device is performed when the carbon dioxide concentration is larger than a predetermined value. Therefore, even when the user enters the sleep preparation state, if the carbon dioxide concentration is higher than a predetermined value, ventilation is performed by the ventilation device, and the carbon dioxide concentration in the room is lowered. This can prevent the user from falling asleep in conventional ventilation systems. That is, the conventional ventilation system has a problem that it may not be possible to realize a space suitable for the user to fall asleep.

Therefore, this disclosure provides a ventilation system that contributes to the realization of a space suitable for the user to fall asleep.

The ventilation system according to the present disclosure includes a ventilation device, a carbon dioxide measuring unit, a sleep preparation detection unit, and a control unit. The ventilation device is for ventilating a predetermined space. The carbon dioxide measuring unit measures the carbon dioxide concentration in a predetermined space. The sleep preparation detection unit detects that the user in the predetermined space is in the sleep preparation state. Then, the control unit controls ventilation by the ventilation device based on the detection result of the sleep preparation detection unit and the carbon dioxide concentration measured by the carbon dioxide measurement unit.

The ventilation system according to the present disclosure can provide a ventilation system that contributes to the realization of a space suitable for the user to fall asleep.

FIG. 1 is a schematic connection diagram of the entire building air conditioning system according to the first embodiment, which is an example of the ventilation system according to the present disclosure. FIG. 2 is a schematic functional block diagram of the system controller and peripheral devices according to the first embodiment of the present disclosure. FIG. 3 is a diagram showing a data structure of a carbon dioxide concentration table during sleep according to the first embodiment of the present disclosure. FIG. 4 is a flowchart showing ventilation control according to the first embodiment of the present disclosure. FIG. 5 is a schematic functional block diagram of the system controller and peripheral devices according to the second embodiment of the present disclosure. FIG. 6 is a diagram showing a data structure of a carbon dioxide concentration table during sleep according to the second embodiment of the present disclosure. FIG. 7 is a flowchart showing ventilation control according to the second embodiment of the present disclosure. FIG. 8 is a schematic connection diagram of a conventional ventilation system.

Hereinafter, the mode for carrying out the present disclosure will be described with reference to the drawings. It should be noted that all of the embodiments described below show a preferred specific example of the present disclosure. Therefore, the components, the arrangement positions and connection forms of the components, the steps (processes), the order of the steps, and the like shown in the following embodiments are examples and do not limit the present disclosure. Therefore, among the components in the following embodiments, the components not described in the independent claims indicating the highest level concept of the present disclosure are described as arbitrary components. Further, in each figure, the same reference numerals are given to substantially the same configurations, and duplicate explanations will be omitted or simplified.

(Embodiment 1)
In the present embodiment, the whole building air conditioning system 20 will be described as an example of the ventilation system according to the present disclosure. First, the configuration of the entire air conditioning system 20 in the entire building will be described. FIG. 1 is a schematic connection diagram of the entire building air conditioning system 20 according to the present embodiment.

As shown in FIG. 1, the whole building air conditioning system 20 includes an outside air introduction fan 4, an exhaust fan 5 (

exhaust fans

5a, 5b, 5c, 5d), and a transfer fan 3 (

conveyor fans

3a, 3b, 3c, 3d). , Circulation fan 6 (

circulation fan

6a, 6b, 6c, 6d) and the like. Further, the whole building air conditioning system 20 includes a living room temperature sensor 11 (living

room temperature sensor

11a, 11b, 11c, 11d), a living room humidity sensor 12 (living

room humidity sensor

12a, 12b, 12c, 12d), and an air conditioning room temperature sensor 14. , The air-conditioning room humidity sensor 15, and the like. Further, the whole building air conditioning system 20 includes an air conditioner 9, a humidifier 16, a dehumidifier 17, an input / output terminal 19, a system controller 10, and a carbon dioxide measuring unit 101 (carbon

dioxide measuring units

101a, 101b, 101c). And are configured to include.

Further, the whole building air conditioning system 20 cooperates with the mobile terminal 100 (

mobile terminals

100a, 100b, 100c) carried by the user. In this embodiment, it is assumed that the mobile terminal 100 includes the carbon dioxide measuring unit 101.

The entire building air conditioning system 20 is installed in a general house 1 which is an example of a building. The general housing 1 includes a plurality of (four in the present embodiment) living rooms 2 (

living rooms

2a, 2b, 2c, 2d), each of which is an example of the predetermined space according to the present disclosure, and at least one independent of the living room 2. It has two air conditioning chambers 18. Here, the general house 1 (house) is a house provided as a place where the resident lives a private life, and as a general structure, the living room 2 includes a living room, a dining room, a bedroom, a private room, a children's room, and the like. Is done. Further, the living room 2 provided by the air conditioning system 20 in the entire building may include a toilet, a bathroom, a washroom, a dressing room, and the like.

In the air conditioning room 18, the air conveyed from each living room 2 is mixed with each other. Further, the outside air is taken into the air conditioning chamber 18 by the outside air introduction fan 4, and is mixed with the air conveyed from each living room 2 by the circulation fan 6. The temperature and humidity of the air in the air conditioning chamber 18 are controlled by the air conditioner 9, the humidifier 16 and the dehumidifier 17 provided in the air conditioning chamber 18. That is, in the air-conditioned room 18, air to be conveyed to the living room 2 in which the temperature and humidity are adjusted is generated. The air whose temperature and humidity have been adjusted in the air-conditioning chamber 18 is conveyed to each living room 2 by the transfer fan 3. Here, the air conditioning room 18 is a space in which an air conditioner 9, other humidifier 16, a dehumidifier 17, etc. can be arranged and has a certain size for controlling the air conditioning of each living room 2, but it is a living space. It is not intended, and basically does not mean the room in which the resident stays.

The air in each living room 2 is conveyed to the air conditioning room 18 by the circulation fan 6, and is discharged as outside air from the inside of the living room 2 to the outside of the general house 1 by the exhaust fan 5. The whole building air conditioning system 20 controls the exhaust air volume of the exhaust fan 5 to exhaust the outside air from the inside of the living room 2, and controls the supply air volume of the outside air introduction fan 4 while interlocking with the exhaust air volume of the exhaust fan 5. 2 Take in the outside air. As a result, the first-class ventilation system ventilation is performed.

The outside air introduction fan 4 is a fan that takes in outside air into the room of a general house 1, and corresponds to, for example, an air supply function of an air supply fan or a heat exchange air fan. As described above, the outside air taken in by the outside air introduction fan 4 is introduced into the air conditioning chamber 18. The air supply air volume of the outside air introduction fan 4 can be set in a plurality of stages, and the air supply air volume is set according to the exhaust air volume of the exhaust fan 5 as described later.

The exhaust fan 5 is a fan that exhausts a part of the air in the installed living room 2 as outside air through, for example, an exhaust duct. Applies to. In FIG. 1, the exhaust duct connected to the exhaust fan 5 is directly connected to the outside of the general house 1, but when the exhaust function of the heat exchange air fan is used, the exhaust duct is once connected to the heat exchange air fan. After that, it is connected to the outside of the general house 1. That is, the air passing through the exhaust duct is heat-exchanged with the air passing through the air supply air passage of the heat exchange air fan, and then is discharged to the outside of the general house 1. As shown in FIG. 1, the exhaust fan 5a is provided in the living room 2a, the exhaust fan 5b is provided in the living room 2b, the exhaust fan 5c is provided in the living room 2c, and the exhaust fan 5d is provided in the living room 2d.

Each exhaust fan 5 is configured so that its exhaust air volume can be set in a plurality of stages. Normally, each exhaust fan 5 is controlled by the system controller 10 so that the exhaust air volume is set in advance. Then, the exhaust air volume is controlled for each of the exhaust fans 5a to 5d by the system controller 10 according to the setting by the user and the value acquired by various sensors, for example, the carbon dioxide measuring unit 101.

Each transport fan 3 is provided on, for example, a wall surface of the air conditioning chamber 18 corresponding to each living room 2. Specifically, the air in the air conditioning chamber 18 is conveyed to the living room 2a by the transport fan 3a via the transport duct, and is conveyed to the living room 2b via the transport duct by the transport fan 3b. Further, the air in the air conditioning chamber 18 is conveyed to the living room 2c by the transport fan 3c via the transport duct, and is conveyed to the living room 2d via the transport duct by the transport fan 3d. The transfer ducts connecting each transfer fan 3 and each living room 2 are independently provided.

The circulation fan 6a is provided in the living room 2a, the circulation fan 6b is provided in the living room 2b, the circulation fan 6c is provided in the living room 2c, and the circulation fan 6d is provided in the living room 2d. A part of the air in each living room 2 is conveyed to the air conditioning room 18 through the circulation duct by the corresponding circulation fan 6. The circulation ducts connecting the air conditioning chamber 18 and each living room 2 may be provided independently, but a plurality of tributary ducts that are a part of the circulation ducts are merged from the middle and integrated into one circulation duct. After that, one circulation duct after integration may be connected to the air conditioning chamber 18.

The air conditioner 9 is an air conditioner installed in the air conditioner room 18 and controls the air conditioning in the air conditioner room 18. The air conditioner 9 cools or heats the air in the air conditioning chamber 18 so that the temperature of the air in the air conditioning chamber 18 becomes a set temperature (hereinafter, also referred to as “target temperature in the air conditioning chamber”).

The humidifier 16 is installed in the air-conditioning chamber 18, and when the humidity of the air in the air-conditioning chamber 18 is lower than the set humidity (hereinafter, also referred to as “target humidity in the air-conditioning room”), the humidity becomes the target humidity in the air-conditioning room. As described above, the air in the air conditioning chamber 18 is humidified. Although the humidifier 16 may be built in the air conditioner 9, the humidifier 16 is independent of the air conditioner 9 in order to obtain a humidifying capacity sufficient for a plurality of living rooms 2. It is desirable to have.

The dehumidifier 17 is installed in the air conditioning room 18 and dehumidifies the air in the air conditioning room 18 so that when the humidity of the air in the air conditioning room 18 is higher than the target humidity in the air conditioning room, the humidity becomes the target humidity in the air conditioning room 18. Although the dehumidifier 17 may be built in the air conditioner 9, the dehumidifier 17 is independent of the air conditioner 9 in order to obtain a dehumidifying capacity sufficient for a plurality of living rooms 2. It is desirable to have.

Each room temperature sensor 11 is provided in the corresponding room 2. Specifically, the living room temperature sensor 11a is provided in the living room 2a, the living room temperature sensor 11b is provided in the living room 2b, the living room temperature sensor 11c is provided in the living room 2c, and the living room temperature sensor 11d is provided in the living room 2d. It is provided. The living room temperature sensor 11 is a sensor that acquires the room temperature of each of the corresponding living rooms 2a to 2d and transmits it to the system controller 10.

Each room humidity sensor 12 is provided in the corresponding room 2. Specifically, the living room humidity sensor 12a is provided in the living room 2a, the living room humidity sensor 12b is provided in the living room 2b, the living room humidity sensor 12c is provided in the living room 2c, and the living room humidity sensor 12d is provided in the living room 2d. It is provided. The living room humidity sensor 12 is a sensor that acquires the indoor humidity (living room humidity) of each of the corresponding living rooms 2a to 2d and transmits it to the system controller 10.

The air conditioning room temperature sensor 14 is a sensor that acquires the temperature of the air in the air conditioning room 18 and transmits it to the system controller 10. The air conditioning chamber temperature sensor 14 may be built in the air conditioner 9, but when it is built in the air conditioner 9, only information around the air conditioner 9 (for example, near the air supply port) can be obtained. .. Since the air-conditioning chamber 18 mixes the outside air with the air conveyed from each living room 2 as described above, the air-conditioning chamber temperature sensor 14 together with the air-conditioning conditioner 9 so as to obtain information on the air-conditioning chamber 18 as a whole. It is desirable to prepare independently.

The air-conditioning room humidity sensor 15 is a sensor that acquires the humidity of the air in the air-conditioning room 18 and transmits it to the system controller 10. For the same reason as the air conditioning room temperature sensor 14, it is desirable that the air conditioning room humidity sensor 15 be provided independently of the air conditioner conditioner 9 so that information on the air conditioning room 18 as a whole can be obtained.

The mobile terminal 100 includes a carbon dioxide measuring unit 101. Specifically, the carbon dioxide measuring unit 101a is provided in the mobile terminal 100a, the carbon dioxide measuring unit 101b is provided in the mobile terminal 100b, and the carbon dioxide measuring unit 101c is provided in the mobile terminal 100c. The mobile terminal 100 is a terminal carried by a user, and is an information terminal that can be moved along with the movement of the user by being carried by the user at all times. In the present embodiment, when there are a plurality of users, it is assumed that each user has one mobile terminal 100. The mobile terminal 100 is, for example, a mobile phone, a smartphone, a wearable terminal, or the like. The wearable terminal is a terminal of an electronic device worn and used, and corresponds to, for example, a wristwatch-type terminal.

The carbon dioxide measuring unit 101 measures the carbon dioxide concentration around the carbon dioxide measuring unit 101, and is, for example, a carbon dioxide sensor whose output voltage value changes according to the carbon dioxide concentration. That is, the whole building air conditioning system 20 includes a carbon dioxide measuring unit 101 that measures the carbon dioxide concentration of the living room 2. The carbon dioxide measuring unit 101 acquires the carbon dioxide concentration around the corresponding mobile terminal 100, that is, the carbon dioxide concentration in the living room 2 (

living rooms

2c and 2d in the present embodiment) in which the mobile terminal 100 is present. Then, the carbon dioxide measuring unit 101 transmits the acquired carbon dioxide concentration to the system controller 10 via the corresponding mobile terminal 100.

The system controller 10 controls the air conditioning of the living room 2 provided in the general house 1, and is a controller that controls the entire air conditioning system 20 in the entire building. The system controller 10 is communicably connected to each control target by wireless communication. The control targets include an outside air introduction fan 4, an exhaust fan 5, a conveyor fan 3, a circulation fan 6, a living room temperature sensor 11, a living room humidity sensor 12, an air conditioning room temperature sensor 14, an air conditioning room humidity sensor 15, an air conditioner conditioner 9, and a humidifier. 16, the dehumidifier 17, and the portable terminal 100 can be mentioned.

The system controller 10 controls the outside air introduction fan 4 and the exhaust fan 5 in conjunction with each other, such as setting the supply air volume of the outside air introduction fan 4 so that the air volume corresponds to the exhaust air volume of the exhaust fan 5. As a result, the general house 1 is ventilated by the first-class ventilation method.

Further, the system controller 10 has an air conditioner 9, a humidifier 16, and a dehumidifier 17 as an air conditioner based on the temperature and humidity of the air in the air conditioner room 18 acquired by the air conditioner room temperature sensor 14 and the air conditioner room humidity sensor 15. To control. Specifically, the system controller 10 has an air conditioner 9, a humidifier 16, and a dehumidifier so that the temperature and humidity of the air conditioner room 18 become the target temperature of the air conditioner room and the target humidity of the air conditioner room set in the air conditioner room 18. 17 is controlled.

Further, the system controller 10 sets the air volume of the transport fan 3 and the air volume of the circulation fan 6 based on the room temperature and the room humidity of each room 2 acquired by the room temperature sensor 11 and the room humidity sensor 12. Specifically, in the system controller 10, the room temperature and humidity of each room 2 are set for each room 2 (hereinafter, also referred to as “room target temperature”) and humidity (hereinafter, “room target humidity””. The air volume of the transport fan 3 and the air volume of the circulation fan 6 are set so as to be (also referred to as).

As a result, the air conditioned in the air-conditioned room 18 is transported to each living room 2 with the air volume set in each transport fan 3, and the air in each living room 2 is transported to each living room 2 with the air volume set in each circulation fan 6. It is transported to the air conditioning chamber 18. Therefore, the room temperature and the room humidity of each room 2 are controlled to be the room target temperature and the room target humidity.

In the present embodiment, both the temperature and the humidity of the air conditioning chamber 18 are controlled, but only one of the temperature and the humidity of the air conditioning chamber 18 may be controlled. Further, although the description has been made assuming that both the indoor temperature and the indoor humidity of each living room 2 are controlled, only one of the indoor temperature and the indoor humidity of each living room 2 may be controlled.

Further, the system controller 10 controls the ventilation device based on the carbon dioxide concentration of the living room 2 (

living rooms

2c and 2d in the present embodiment) in which the mobile terminal 100 is present, which is acquired by the carbon dioxide measuring unit 101. Here, as an example of the ventilation device according to the present disclosure, the ventilation device according to the present embodiment includes a transfer fan 3 (conveyor fans 3a to 3d), a circulation fan 6 (circulation fans 6a to 6d), and an exhaust fan 5 (exhaust). It will be described as assuming that the fans 5a to 5d) and the outside air introduction fan 4. That is, the whole building air conditioning system 20 includes a transport fan 3, a circulation fan 6, an exhaust fan 5, and an outside air introduction fan 4 as ventilation devices for ventilating each living room 2. The system controller 10 controls the ventilation device so that the carbon dioxide concentration in the living room 2 becomes the set carbon dioxide concentration (hereinafter, also referred to as “target carbon dioxide concentration”). The detailed control contents will be described later.

Here, by connecting the system controller 10 and the above-mentioned control target by wireless communication, complicated wiring work can be eliminated. However, at least a part of these control targets may be configured to be communicable with the system controller 10 by wire communication.

The input / output terminal 19 is communicably connected to the system controller 10 by wireless communication, receives input of information necessary for constructing the whole building air conditioning system 20, and stores it in the system controller 10. Further, the input / output terminal 19 acquires the state of the entire building air conditioning system 20 from the system controller 10 and displays it. Examples of the input / output terminal 19 include mobile information terminals such as mobile phones, smartphones, and tablets.

The input / output terminal 19 does not necessarily have to be connected to the system controller 10 by wireless communication, and may be connected to the system controller 10 by wire communication. In this case, the input / output terminal 19 may be realized by, for example, a wall-mounted remote controller. Further, the input / output terminal 19 and the system controller 10 may be integrated.

In the present embodiment, a case where only one mobile terminal 100 exists in the living room 2 will be described. Specifically, it is a case where only the mobile terminal 100a is present in the living room 2c shown in FIG.

Next, the system controller 10 according to the present embodiment will be described in detail. First, with reference to FIG. 2, each function of the system controller 10 according to the present embodiment will be described. FIG. 2 is a schematic functional block diagram of the system controller 10 and peripheral devices.

The system controller 10 includes a concentration acquisition unit 310, a sleep preparation detection unit 320, a concentration storage unit 300, a control unit 200, a vital data acquisition unit 330, a sleep state determination unit 340, and a determination unit 350. ..

The concentration acquisition unit 310 acquires the carbon dioxide concentration measured by the carbon dioxide measurement unit 101. In the present embodiment, as described above, the carbon dioxide measuring unit 101 is provided in the mobile terminal 100, and the concentration acquisition unit 310 can be said to acquire the carbon dioxide concentration in the living room 2 in which the mobile terminal 100 is located.

The vital data acquisition unit 330 acquires the user's vital data. Here, the vital data is basic information about the life of the user, and is defined as at least one or more data of the user's blood pressure, heart rate, respiration, and body movement in the present embodiment. Here, the breathing is the number of breaths performed per unit time, the depth of breathing, and the like. The body movement is the magnitude of the movement of the body. The vital data acquisition unit 330 acquires vital data via, for example, a vital sensor or the like.

The sleep state determination unit 340 acquires vital data from the vital data acquisition unit 330, and based on the acquired vital data, the user determines whether the user is in an active state, a sleep preparation state, a sleep onset state, a sleep state, or a wakefulness state. judge.

Here, each state of the user will be explained.

The active state means the state in which the user is awake and active, and one example is that the user is exercising, eating, working, studying, etc.

The sleep preparation state is a state in which the user is preparing to fall asleep from an active state, and one example is that the user enters a futon to fall asleep. In the sleep-ready state, the user is still awake and has not fallen asleep.

The sleep-onset state is a state in which the user falls asleep from the sleep-prepared state.

The sleep state is a state in which sleep continues from the state of falling asleep. That is, in the sleep state, the user loses consciousness and is dormant.

Wakefulness refers to the state of waking up from a sleeping state, and one example is when a user wakes up in the morning.

The user first shifts from the active state to the sleep ready state, then to the sleep onset state, then to the sleep state, and finally to the awake state.

As an example of the user's state determination, it is known that the heart rate becomes low when falling asleep, and the sleep onset state can be determined by this. In addition, the sleep preparation state can be determined based on the heart rate before entering the sleep onset state. The above is an example of a determination method, and it is sufficient if the user's condition can be determined, such as determining the user's condition by a combination of these including blood pressure, respiration, body movement, and heart rate.

The sleep preparation detection unit 320 detects that the user in the living room 2 is in the sleep preparation state. That is, when the sleep state determination unit 340 determines that the user is in the sleep preparation state using the vital data acquired from the vital data acquisition unit 330, the sleep preparation detection unit 320 is in the sleep preparation state. Detect that. That is, the sleep preparation detection unit 320 detects that the user is in the sleep preparation state based on the vital data acquired from the vital data acquisition unit 330.

The concentration storage unit 300 is a so-called memory that stores information indicating the carbon dioxide concentration for concentration comparison, which is used by the control unit 200 when determining the carbon dioxide concentration in the living room 2. Specifically, in the present embodiment, the concentration storage unit 300 stores the first threshold value, the second threshold value, the third threshold value, the sleep onset concentration information indicating the carbon dioxide concentration at the time of sleep onset of the user possessing the mobile terminal 100, and the like. Remember. The first threshold value and the second threshold value exist in each living room 2 and are stored in the concentration storage unit 300, respectively. However, in the present embodiment, as described above, the case where only the mobile terminal 100a is present in the living room 2c is described as an example. Therefore, unless otherwise specified, in the present embodiment, the first threshold value of the living room 2c and the second threshold value of the living room 2c are simply described as the first threshold value and the second threshold value, respectively.

The first threshold value is a value indicating a carbon dioxide concentration suitable for the user to fall asleep, for example, a value indicating the carbon dioxide concentration when the user has fallen asleep in the past. Further, the first threshold value may be an experimentally acquired value as the carbon dioxide concentration expected to cause the user to fall asleep, and can be arbitrarily set. In general, it is said that a user is more likely to shift from a sleep-prepared state to a sleep-onset state when the carbon dioxide concentration is higher to some extent than the carbon dioxide concentration in the active state.

The second threshold value is a value larger than the first threshold value and lower than the carbon dioxide concentration considered to be harmful to the human body. The carbon dioxide concentration considered to be harmful to the human body is, for example, a value obtained experimentally or a value published in a research paper. That is, the range of the carbon dioxide concentration indicated by the first threshold value and the second threshold value can be within the range of the carbon dioxide concentration considered to be suitable for falling asleep. That is, the second threshold value is a value within the range of the carbon dioxide concentration defined as suitable for falling asleep and a value lower than the carbon dioxide concentration considered to be harmful to the human body.

The third threshold value is a value smaller than the first threshold value and indicates a carbon dioxide concentration suitable for the activity state of the user. For example, in buildings such as buildings and department stores, the carbon dioxide concentration standard value is 1000 ppm, which is set for the purpose of ensuring a hygienic environment.

The carbon dioxide concentration at the time of falling asleep corresponding to the mobile terminal 100 will be described with reference to FIG. FIG. 3 is a diagram showing a data structure of the carbon dioxide concentration table 301 during sleep onset stored by the concentration storage unit 300. In this embodiment, it is assumed that the user A carries the mobile terminal 100a.

As shown in FIG. 3, the sleep-onset carbon dioxide concentration table 301 stores the terminal information 302 and the sleep-onset concentration information 303 in association with each other for each user. Here, the terminal information 302 is information indicating the mobile terminal 100 possessed by the user, and the sleep onset concentration information 303 is information indicating the carbon dioxide concentration when the user falls asleep. In the figure, as an example, the sleep-onset carbon dioxide concentration table 301 shows that the terminal information 302 is the “portable terminal 100a” and the sleep-onset concentration information 303 is “CO2a”. That is, in the example of the figure, it is shown that the carbon dioxide concentration at the time of falling asleep of the user A who possesses the "portable terminal 100a" is "CO2a".

Data is registered in the carbon dioxide concentration table 301 when falling asleep as follows. That is, the control unit 200 acquires the carbon dioxide concentration CO2a of the living room 2 measured by the carbon dioxide measurement unit 101a when the user A has fallen asleep in the past from the concentration acquisition unit 310, and stores it in the concentration storage unit 300. That is, the sleep-onset concentration information "CO2a" is registered in the sleep-onset carbon dioxide concentration table 301 in association with the terminal information "portable terminal 100a" corresponding to the carbon dioxide measurement unit 101a. As a result, the concentration storage unit 300 stores the carbon dioxide concentration CO2a at the time of falling asleep corresponding to the mobile terminal 100a.

That is, in other words, the concentration storage unit 300 stores the sleep-onset concentration information indicating the carbon dioxide concentration at the time of sleep onset of the user A.

The determination unit 350 determines the living room 2 in which the mobile terminal 100 is located. As a determination method, for example, the determination is made based on the radio wave intensity received from the mobile terminal 100 by the exhaust fans 5a to 5d. In the present embodiment, since the mobile terminal 100a exists in the living room 2c, the determination method thereof will be briefly described.

First, the exhaust fans 5a to 5d of each living room 2 acquire the radio wave strength generated from the mobile terminal 100a and transmit it to the system controller 10. Then, the determination unit 350 compares the radio wave strengths from the mobile terminals 100a acquired from the exhaust fans 5a to 5d of each living room 2, and the mobile terminal 100a is placed in the living room 2 where the exhaust fan 5 that has received the strongest radio wave strength exists. Determined to exist.

In the present embodiment, the exhaust fan 5c has the strongest radio wave intensity from the mobile terminals 100a acquired by the exhaust fans 5a to 5d, so it is determined that the mobile terminal 100a exists in the living room 2c. Further, the radio wave strength may be acquired by the transport fan 3 instead of the exhaust fan 5.

Further, instead of the determination using the radio wave strength, a camera may be provided in each living room 2, the user who carries the mobile terminal 100 may be recognized from the camera image, and the living room 2 in which the mobile terminal 100 exists may be determined. Further, the determination unit 350 may determine the living room 2 in which the mobile terminal 100 is present by notifying the system controller 10 which room 2 the user himself / herself is in via the mobile terminal 100.

The control unit 200 controls ventilation by the ventilation device based on the detection result of the sleep preparation detection unit 320 and the carbon dioxide concentration measured by the carbon dioxide measurement unit 101. The control unit 200 further includes a ventilation determination unit 220 and a ventilation control unit 210. The ventilation determination unit 220 further has a concentration comparison unit 221.

The concentration comparison unit 221 compares the carbon dioxide concentration acquired by the concentration acquisition unit 310 with the first threshold value, the second threshold value, and the third threshold value stored in the concentration storage unit 300, and each of the acquired carbon dioxide concentrations. Compare the magnitude with respect to the threshold.

The ventilation determination unit 220 controls ventilation based on the result of comparison by the concentration comparison unit 221, the sleep preparation state of the user detected by the sleep preparation detection unit 320, and the living room 2 in which the mobile terminal 100 determined by the determination unit 350 exists. The content of the ventilation instruction to the unit 210 is determined. The detailed determination method will be described later with reference to the flowchart of FIG.

The ventilation control unit 210 controls the ventilation device according to the instruction content determined by the ventilation determination unit 220.

Here, the system controller 10 is composed of a microcomputer. That is, the system controller 10 has a computer system having a CPU (Central Processing Unit), a RAM (Random Access Memory), a ROM (Read Only Memory), and the like. The system controller 10 is connected to each part through a driver and an internal bus. For example, the CPU uses the RAM as a work area, executes a program stored in the ROM, controls each operation by exchanging data and instructions based on the execution result, and the computer system acts as the system controller 10. Function. Although the program executed by the CPU is pre-recorded in the ROM here, it may be recorded in a non-temporary recording medium such as a memory card and provided, or may be provided through a telecommunication line such as the Internet. May be provided.

In the above configuration, the ventilation control executed by the system controller 10 according to the present embodiment will be described with reference to the sleep-onset carbon dioxide concentration table 301 of FIG. 3 and the flowchart of FIG. FIG. 4 is a flowchart showing ventilation control executed by the system controller 10. Here, in the flowchart, numbers are assigned with S as an acronym. For example, S1 and the like refer to a processing step. However, the magnitude of the numerical value indicating the processing step and the processing order do not matter.

First, the concentration acquisition unit 310 acquires the carbon dioxide concentration of the air in the living room 2 (step S1). The carbon dioxide concentration of the air in the living room 2 acquired by the concentration acquisition unit 310 is measured by the carbon dioxide measuring unit 101 included in the mobile terminal 100 carried by the user in the living room 2. Further, the determination unit 350 determines in which living room (either 2a, 2b, 2c, or 2d in the present embodiment) the living room 2 in which the mobile terminal 100 is present exists. This makes it possible to know the carbon dioxide concentration of the living room 2 in which the user is present. Explaining in this embodiment, the determination unit 350 determines that the mobile terminal 100a carried by the user A exists in the living room 2c.

Next, the sleep preparation detection unit 320 detects whether or not the user is in the sleep preparation state from the determination result of the sleep state determination unit 340 (step S2).

When the sleep preparation detection unit 320 detects that the user is not in the sleep preparation state, the concentration comparison unit 221 compares the carbon dioxide concentration of the living room 2 in which the user is present with the third threshold value (step S2: No). → Step S3). Explaining in this embodiment, when the user A is not in the sleep preparation state, the concentration comparison unit 221 compares the carbon dioxide concentration of the living room 2c with the third threshold value.

If the carbon dioxide concentration of the living room 2 in which the user is present is equal to or higher than the third threshold value, the ventilation determination unit 220 instructs the ventilation control unit 210 to ventilate the living room 2 in which the user is present. The ventilation control unit 210 operates a fan of the ventilation device to control the carbon dioxide concentration in the living room 2 in which the user is present. As a result, the carbon dioxide concentration in the living room 2 becomes a concentration suitable for the active state, so that the user can maintain concentration during the active state. The ventilation of the living room 2 in which the user exists in step S3 may be executed only when the user is determined to be in the active state by the sleep state determination unit 340.

When the sleep preparation detection unit 320 detects that the user is in the sleep preparation state, the control unit 200 sets the first threshold value of the living room 2 in which the mobile terminal 100 exists stored in the concentration storage unit 300 as follows. Change to. That is, the control unit 200 changes the first threshold value to the same value as the carbon dioxide concentration stored in the concentration storage unit 300 and indicated by the user's sleep-onset concentration information corresponding to the mobile terminal 100 (step S2: Yes → Yes. Step S4). Explaining in this embodiment, the control unit 200 changes the first threshold value of the living room 2c to the carbon dioxide concentration CO2a indicated by the sleep-onset concentration information of the user A stored in the concentration storage unit 300.

Thereby, the first threshold value of the living room 2c can be set to the carbon dioxide concentration suitable for the sleep onset of the user A. As described above, in step S4, the control unit 200 changes the first threshold value based on the carbon dioxide concentration at the time of falling asleep indicated by the concentration information at the time of falling asleep stored in the concentration storage unit 300. Then, as will be described later, the control unit 200 controls ventilation by the ventilation device based on the changed first threshold value.

Further, since the carbon dioxide concentration at the time of falling asleep of the user existing in the living room 2 becomes the first threshold value, even if the user changes the living room 2 in which the sleep preparation is performed, the changed first threshold value of the living room 2 is suitable for the user. It can be the carbon dioxide concentration at the time of falling asleep. For example, even when the living room 2 in which the user prepares for sleep is changed from the living room 2c to the living room 2a, the first threshold value of the changed living room 2a can be set to the carbon dioxide concentration at the time of falling asleep suitable for the user. Further, since the settable range of the second threshold value changes with the change of the first threshold value, the second threshold value is changed as necessary. That is, it can be said that the second threshold value is a value that reflects the change in the first threshold value.

Next, the concentration comparison unit 221 compares the carbon dioxide concentration in the living room 2 with the second threshold value (step S5).

If the carbon dioxide concentration of the living room 2 in which the user in the sleep preparation state is present is equal to or higher than the second threshold value, the ventilation determination unit 220 instructs the ventilation control unit 210 to ventilate the living room 2 in which the user is present. The ventilation control unit 210 operates a fan of the ventilation device to control the carbon dioxide concentration in the living room 2 to be lowered (step S5: Yes → step S6). That is, when the sleep preparation detection unit 320 detects that the user is in the sleep preparation state and the carbon dioxide concentration measured by the carbon dioxide measurement unit 101 is equal to or higher than the second threshold value, the control unit 200 uses a ventilation device. Control to ventilate.

As a result, the living room 2 in which the user is present can maintain the range of carbon dioxide concentration that is considered to be suitable for falling asleep. In addition, it is possible to prevent the living room 2 in which the user is present from having a carbon dioxide concentration that poses a danger to the user's human body.

On the other hand, if the carbon dioxide concentration in the living room 2 in which the user in the sleep preparation state is present is smaller than the second threshold value, the ventilation determination unit 220 instructs the ventilation control unit 210 to stop ventilation in the living room 2 in which the user is present. The ventilation control unit 210 stops the fan of the ventilation device (step S5: No → step S7). That is, when the sleep preparation detection unit 320 detects that the user is in the sleep preparation state and the carbon dioxide concentration measured by the carbon dioxide measurement unit 101 is smaller than the second threshold value, the control unit 200 uses the ventilation device. Control to stop ventilation. In other words, when the sleep preparation detection unit 320 detects that the sleep preparation detection unit 320 is in the sleep preparation state, the control unit 200 controls ventilation by the ventilation device as follows. That is, the control unit 200 is a ventilation device so that the carbon dioxide concentration of the living room 2 acquired by the concentration acquisition unit 310 approaches the carbon dioxide concentration at the time of sleep onset indicated by the concentration information at sleep onset stored by the concentration storage unit 300. Control ventilation by. Further, in this control, the control unit 200 uses the sleep-onset concentration information corresponding to the terminal information indicating the mobile terminal 100 carried by the user in the living room 2 as the sleep-onset concentration information stored in the concentration storage unit 300.

That is, when the user is not in the sleep ready state, as described above, ventilation was performed when the carbon dioxide concentration in the living room 2 in which the user exists exceeds the third threshold value. On the other hand, when the user is in a sleep ready state, ventilation is not performed even if the carbon dioxide concentration in the living room 2 exceeds the third threshold value or the first threshold value, and ventilation is performed when the carbon dioxide concentration exceeds the second threshold value. As a result, when the user is in a sleep ready state, the carbon dioxide concentration in the living room 2, which is larger than the first threshold value and smaller than the second threshold value, is aimed at.

As a result, the carbon dioxide concentration in the living room 2 in which the user exists can be further increased, so that the whole building air conditioning system 20 can easily shift the user to a sleep-onset state. That is, the whole building air conditioning system 20 can shorten the time from when the user enters the sleep preparation state to when the user falls asleep.

Next, the sleep state determination unit 340 determines whether or not the user has fallen asleep (step S8).

If the user has not entered the sleep-onset state, the process returns to the process of step S5 in order to further increase the carbon dioxide concentration in the living room 2 (step S8: No → step S5). As a result, the whole building air conditioning system 20 can make it easier for the user to shift from the sleep preparation state to the sleep onset state.

Then, when the user shifts to the sleep onset state, the system controller 10 ends the ventilation control process (step S8: Yes).

The entire building air conditioning system 20 has been described above as an example of the ventilation system according to the present disclosure. The whole building air conditioning system (20) is characterized by including a carbon dioxide measuring unit (101), a ventilation device, a sleep preparation detecting unit (320), and a control unit (200). The carbon dioxide measuring unit (101) measures the carbon dioxide concentration of the living room (2), which is an example of the predetermined space of the present disclosure. The ventilation device ventilates the living room (2) when the carbon dioxide concentration measured by the carbon dioxide measuring unit (101) is equal to or higher than a predetermined threshold value (third threshold value). The sleep preparation detection unit (320) detects that the user in the living room (2) is in the sleep preparation state. In the control unit (200), even when the carbon dioxide concentration measured by the carbon dioxide measurement unit (101) is equal to or higher than a predetermined threshold value (third threshold value), the sleep preparation detection unit (320) allows the user to be in a sleep preparation state. When it is detected, it is controlled to stop the ventilation by the ventilation device. As a result, the whole building air conditioning system (20) is a ventilation device when the user is in a sleep ready state, even if the carbon dioxide concentration in the living room (2) in which the user is present is higher than a predetermined threshold (third threshold). Ventilation is not performed. Therefore, the whole building air conditioning system (20) contributes to the realization of a space suitable for the user to fall asleep without hindering the user from falling asleep.

(Embodiment 2)
In the present embodiment, a case where a plurality of mobile terminals 100 are present in the living room 2 will be described. That is, there are a plurality of users in this embodiment. Specifically, it is a case where the mobile terminal 100b and the mobile terminal 100c exist in the living room 2d shown in FIG. In the present embodiment, for the sake of simplicity, it is assumed that the mobile terminal 100 existing in the general house 1 is only the mobile terminal 100b and the mobile terminal 100c, and the mobile terminal 100a does not exist in the living room 2c.

First, with reference to FIG. 5, each function of the system controller 10A according to the present embodiment will be described. FIG. 5 is a schematic functional block diagram of the system controller 10A and peripheral devices according to the present embodiment. The basic configuration of the system controller 10A is the same as that of the system controller 10 according to the first embodiment, but the system controller 10A is different from the system controller 10 in that the control unit 200A is provided instead of the control unit 200 of the system controller 10. .. The control unit 200A is different from the control unit 200 in that the ventilation determination unit 220A is provided in place of the ventilation determination unit 220 of the control unit 200 according to the first embodiment. Further, the system controller 10A includes a determination unit 350A instead of the determination unit 350 of the system controller 10.

The system controller 10A includes a concentration acquisition unit 310, a sleep preparation detection unit 320, a concentration storage unit 300, a control unit 200A, a vital data acquisition unit 330, a sleep state determination unit 340, and a determination unit 350A. ..

Since the concentration acquisition unit 310, the vital data acquisition unit 330, the sleep state determination unit 340, and the sleep preparation detection unit 320 are the same as those in the first embodiment, the description thereof will be omitted.

The first threshold value, the second threshold value, and the third threshold value stored in the concentration storage unit 300 are the same as those in the first embodiment, but the concentration storage unit 300 replaces the sleep-onset carbon dioxide concentration table 301 according to the first embodiment. Then, the carbon dioxide concentration table 304 at the time of falling asleep is stored. The sleep-onset carbon dioxide concentration table 304 corresponding to the mobile terminal 100 will be described with reference to FIG.

FIG. 6 is a diagram showing a data structure of the carbon dioxide concentration table 304 during sleep onset stored by the concentration storage unit 300.

The mobile terminal 100 is carried by each user. Explaining in this embodiment, the user B carries the mobile terminal 100b, and the user C carries the mobile terminal 100c.

The data configuration of the sleep-onset carbon dioxide concentration table 304 is the same as the data configuration of the sleep-onset carbon dioxide concentration table 301 according to the first embodiment, but in the sleep-onset carbon dioxide concentration table 304, the registered data is stored in the sleep-onset carbon dioxide concentration table 304. Different from the carbon dioxide concentration table 301. That is, the sleep-onset carbon dioxide concentration table 304 stores the user's terminal information 305 and the user's sleep-onset concentration information 306 in association with each other for each of the plurality of users. In the figure, as an example, the sleep-onset carbon dioxide concentration table 304 shows that the terminal information 305 is “portable terminal 100b” and the sleep-onset concentration information 306 is “CO2b”. Further, in the figure, as an example, the sleep-onset carbon dioxide concentration table 304 shows that the terminal information 305 is "portable terminal 100c" and the sleep-onset concentration information 306 is "CO2c". That is, in the example of the figure, it is shown that the carbon dioxide concentration of the living room 2d at the time of falling asleep of the user B who possesses the "portable terminal 100b" is "CO2b". Further, in the example of the figure, it is shown that the carbon dioxide concentration of the living room 2d at the time of falling asleep of the user C possessing the "portable terminal 100c" is "CO2c".

The method of registering the data in the sleep-onset carbon dioxide concentration table 304 is the same as the data registration in the sleep-onset carbon dioxide concentration table 301 according to the first embodiment. That is, the control unit 200A acquires the carbon dioxide concentration CO2b of the living room 2 measured by the carbon dioxide measurement unit 101b when the user B has fallen asleep in the past from the concentration acquisition unit 310, and stores it in the concentration storage unit 300. That is, the sleep-onset concentration information "CO2b" is registered in the sleep-onset carbon dioxide concentration table 304 in association with the terminal information "portable terminal 100b" corresponding to the carbon dioxide measurement unit 101b. Similarly, the control unit 200A acquires the carbon dioxide concentration CO2c of the living room 2 measured by the carbon dioxide measurement unit 101c when the user C has fallen asleep in the past from the concentration acquisition unit 310, and stores it in the concentration storage unit 300. That is, the sleep-onset concentration information "CO2c" is registered in the sleep-onset carbon dioxide concentration table 304 in association with the terminal information "portable terminal 100c" corresponding to the carbon dioxide measurement unit 101c.

As a result, the concentration storage unit 300 stores the carbon dioxide concentration CO2b at the time of falling asleep corresponding to the mobile terminal 100b and the carbon dioxide concentration CO2c at the time of falling asleep corresponding to the mobile terminal 100c. That is, in other words, the concentration storage unit 300 individually stores the sleep-onset concentration information indicating the carbon dioxide concentration at the time of sleep onset of all users.

In the present embodiment, the case where two mobile terminals 100 are present in the whole building air conditioning system according to the present embodiment is taken as an example, but the number of mobile terminals 100 may be any number. The concentration storage unit 300 stores sleep-onset concentration information indicating the carbon dioxide concentration at sleep onset of all users who carry the mobile terminal 100.

The determination unit 350A determines the living room 2 in which the mobile terminal 100 exists as in the first embodiment, but also determines the number of mobile terminals 100 existing in each of the living rooms 2a to 2d. As a determination method, for example, as in the first embodiment, the exhaust fans 5a to 5d are determined by the radio wave intensity received from the mobile terminal 100.

Explaining in this embodiment, the exhaust fans 5a to 5d of each living room 2 acquire the radio wave strength generated from the

mobile terminals

100b and 100c and transmit the radio wave strength to the system controller 10A. Then, the determination unit 350A compares the radio wave strengths from the

mobile terminals

100b and 100c acquired from the exhaust fans 5a to 5d of each living room 2, and in the living room 2 where the exhaust fan 5 receiving the strongest radio wave strength exists. It is determined that the mobile terminal 100 exists.

As for the radio wave intensity from the

mobile terminals

100b and 100c acquired by the exhaust fans 5a to 5d, it is determined that the

mobile terminals

100b and 100c exist in the living room 2d because the exhaust fan 5d has the strongest radio wave strength. Therefore, it is determined that there are two

mobile terminals

100b and 100c in the living room 2d.

In the present embodiment, the case where two mobile terminals 100 are present is taken as an example, but when the number of mobile terminals 100 is three or more, the same determination is made so that the mobile terminal 100 existing in the living room 2 is present. And the number of mobile terminals 100 are determined.

The control unit 200A further includes a ventilation determination unit 220A and a ventilation control unit 210. The ventilation determination unit 220A further has a concentration comparison unit 221A and a threshold value change unit 222.

The concentration comparison unit 221A is the same as the concentration comparison unit 221 according to the first embodiment in that the carbon dioxide concentration acquired by the concentration acquisition unit 310 is used to compare with each threshold value stored in the concentration storage unit 300. However, it differs from the concentration comparison unit 221 in the following points. That is, when a plurality of users exist in a certain living room 2, the concentration comparison unit 221A has the carbon dioxide concentration acquired by the concentration acquisition unit 310 via the carbon dioxide measurement unit 101 of the mobile terminal 100 possessed by each user. Make a comparison using the average value. The details of the comparison will be described later.

When the sleep preparation detection unit 320 detects the sleep preparation state of the user, the threshold value change unit 222 changes the first threshold value based on the sleep-onset concentration information corresponding to the mobile terminal 100 stored in the concentration storage unit 300. However, the details will be described later.

The ventilation determination unit 220A determines the comparison result of the concentration comparison unit 221A, the value of the first threshold value changed by the threshold value change unit 222, and the sleep preparation state of the user detected by the sleep preparation detection unit 320, by the determination unit 350A. The content of the ventilation instruction to the ventilation control unit 210 is determined based on the number of mobile terminals 100 existing in the living room 2. The detailed control thereof will be described later with reference to the flowchart of FIG.

Since the ventilation control unit 210 is the same as that of the first embodiment, the description thereof will be omitted.

In the above configuration, the ventilation control executed by the system controller 10A will be described with reference to the flowchart of FIG. FIG. 7 is a flowchart showing ventilation control executed by the system controller 10A. Here, in the flowchart, numbers are assigned with S as an acronym. For example, S11 and the like refer to a processing step. However, the magnitude of the numerical value indicating the processing step and the processing order do not matter.

First, the concentration acquisition unit 310 acquires the carbon dioxide concentration of the living room 2 (step S11).

Further, the determination unit 350A determines in which living room 2 the mobile terminal 100 exists and the number of mobile terminals 100 existing in the living room 2. Explaining in this embodiment, in the determination unit 350A, the mobile terminal 100b carried by the user B and the mobile terminal 100c carried by the user C exist in the living room 2d, and the number of the mobile terminals 100 existing in the living room 2d is 2. Is determined to be.

Next, the sleep preparation detection unit 320 detects whether or not the user is in a sleep preparation state (step S12). In the present embodiment, when there are a plurality of users in a certain living room 2, the sleep preparation detection unit 320 detects that the user is in the sleep preparation state when there is even one user in the sleep preparation state. It shall be. However, this is only an example, and when all the users are in the sleep preparation state, the sleep preparation detection unit 320 may detect that the users are in the sleep preparation state.

When the sleep preparation detection unit 320 detects that the user is not in the sleep preparation state, the concentration comparison unit 221A compares the carbon dioxide concentration of the room 2 in which the user is present with the third threshold value (the concentration comparison unit 221A). Step S12: No → Step S13).

Explaining in this embodiment, there are a plurality of users in the living room 2d, and there are a plurality of carbon dioxide measuring units 101. In this case, the concentration comparison unit 221A calculates the average value of the carbon dioxide concentration acquired from the carbon

dioxide measurement units

101b and 101c, and compares the calculated average value with the third threshold value. In the present embodiment, the average value is used, but the carbon dioxide concentration may be higher than the average value, or may be arbitrarily set from between the minimum value and the maximum value. The same applies when there are three or more carbon dioxide measuring units 101.

If the average value of the calculated carbon dioxide concentration is equal to or higher than the third threshold value, the ventilation determination unit 220A instructs the ventilation control unit 210 to ventilate the living room 2 in which the user is present. The ventilation control unit 210 operates a fan of the ventilation device to control the carbon dioxide concentration in the living room 2 in which the user is present.

When the sleep preparation detection unit 320 detects that the user is in the sleep preparation state, the threshold value change unit 222 is based on the user's sleep-onset concentration information stored in the concentration storage unit 300 and corresponding to the mobile terminal 100. Identify the threshold. Then, the control unit 200A changes the first threshold value stored in the concentration storage unit 300 to the threshold value specified by the threshold value changing unit 222 (step S12: Yes → step S14).

A specific description of the present embodiment will be described using the carbon dioxide concentration table 304 during sleep onset in FIG. User B and user C exist in the living room 2d. The sleep-onset concentration information "CO2b" of the user B existing in the living room 2d and the sleep-onset concentration information "CO2c" of the user C existing in the living room 2d are stored in the sleep-onset carbon dioxide concentration table 304 of the concentration storage unit 300. There is. The threshold value changing unit 222 specifies the higher carbon dioxide concentration of the carbon dioxide concentration CO2b when user B falls asleep and the carbon dioxide concentration CO2c when user C falls asleep as a threshold value, and sets the first threshold value to the specified threshold value. change.

As a result, the first threshold value of the living room 2d can be set to a carbon dioxide concentration suitable for falling asleep for both users B and C.

In the present embodiment, the first threshold value is changed to the higher carbon dioxide concentration of the carbon dioxide concentration CO2b when the user B falls asleep and the carbon dioxide concentration CO2c when the user C falls asleep. For example, it may be changed to the average of two carbon dioxide concentrations.

Even when there are three or more users in the sleep ready state who carry the mobile terminal 100 in the same living room 2, the threshold value changing unit 222 changes the first threshold value in the same manner. That is, the threshold value changing unit 222 specifies the maximum or average carbon dioxide concentration among the carbon dioxide concentrations at the time of sleep onset of the user corresponding to the mobile terminal 100 stored in the concentration storage unit 300 as the threshold value, and sets the specified threshold value. Change the first threshold. Further, since the settable range of the second threshold value changes with the change of the first threshold value, the second threshold value is changed as necessary. That is, it can be said that the second threshold value is a value that reflects the change in the first threshold value. As described above, in step S14, the control unit 200A changes the first threshold value based on the carbon dioxide concentration at the time of falling asleep indicated by the concentration information at the time of falling asleep stored in the concentration storage unit 300. Then, as will be described later, the control unit 200A controls ventilation by the ventilation device based on the second threshold value based on the changed first threshold value.

Next, the concentration comparison unit 221A makes a comparison with the second threshold value using the carbon dioxide concentration in the living room 2 (step S15). Specifically, as in step S13, the concentration comparison unit 221A calculates the average value of the carbon dioxide concentration acquired from the concentration acquisition unit 310, and compares the calculated average value with the second threshold value. Explaining in this embodiment, the concentration comparison unit 221A compares the average value of the carbon dioxide concentration acquired from the carbon

dioxide measurement units

101b and 101c with the second threshold value. As in step S13, in the present embodiment, the average value is used, but the carbon dioxide concentration may be higher than the average value, or may be arbitrarily set from between the minimum value and the maximum value. The same applies when there are three or more carbon dioxide measuring units 101.

If the average value of the calculated carbon dioxide concentration is equal to or higher than the second threshold value, the ventilation determination unit 220A instructs the ventilation control unit 210 to ventilate the living room 2 in which the user is present. The ventilation control unit 210 operates a fan of the ventilation device to control the carbon dioxide concentration in the living room 2 to be lowered (step S15: Yes → step S16).

If the average value of the calculated carbon dioxide concentration is smaller than the second threshold value, the ventilation determination unit 220A instructs the ventilation control unit 210 to stop ventilation of the living room 2 in which the user is present. The ventilation control unit 210 stops the fan of the ventilation device (step S15: No → step S17). That is, when the sleep preparation detection unit 320 detects that the sleep preparation detection unit 320 is in the sleep preparation state, the control unit 200A controls as follows when the number of the mobile terminals 100 determined by the determination unit 350A is a plurality. That is, the control unit 200A acquires the sleep-onset concentration information corresponding to each of the plurality of terminal information indicating each of the plurality of mobile terminals 100 determined by the determination unit 350A, which is stored by the concentration storage unit 300. Then, the control unit 200A makes the carbon dioxide concentration of the living room 2 acquired by the concentration acquisition unit 310 approach the maximum carbon dioxide concentration among the carbon dioxide concentrations at sleep onset indicated by the acquired sleep-onset concentration information. Control ventilation with a ventilator. That is, the change of the first threshold is reflected in the second threshold. Based on this second threshold value, the control unit 200A determines that the carbon dioxide concentration of the living room 2 acquired by the concentration acquisition unit 310 is among the carbon dioxide concentrations at sleep onset indicated by the sleep onset concentration information corresponding to each of the plurality of terminal information. Control ventilation with a ventilator to approach the maximum carbon dioxide concentration in.

Next, the sleep state determination unit 340 determines whether or not all the users in the sleep ready state existing in the living room 2 have fallen asleep (step S18).

Explaining in this embodiment, the sleep state determination unit 340 determines whether or not the user B and the user C in the living room 2d have fallen asleep. When there are three or more users, the determination is made in the same manner.

If all the users who are in the sleep ready state existing in the living room 2 have not entered sleep, the process returns to the process of step S15 in order to further increase the carbon dioxide concentration in the living room 2 (step S18: No → step S15).

Thereby, the whole building air-conditioning system according to the present embodiment can easily shift the user who has not yet entered the sleep-onset state to the sleep-onset state.

Then, when all the users have fallen asleep, the system controller 10A ends the ventilation control process (step S18: Yes).

As described above, as an example of the ventilation system according to the present disclosure, the whole building air conditioning system 20 and the system controller 10 according to the first embodiment and the whole building air conditioning system and the system controller 10A according to the second embodiment have been described.

(Modification example)
As described above, the whole building air conditioning system according to the first and second embodiments is an example of the ventilation system according to the present disclosure, and the scope of the present disclosure is not limited to the contents of the first and second embodiments.

For example, the whole building air-conditioning system according to the first and second embodiments may be modified so as not to store the sleep-onset concentration information indicating the carbon dioxide concentration at the time of sleep onset of the user in the concentration storage unit 300. The whole building air-conditioning system related to this modification is a system in which the first threshold value and the second threshold value are fixed values, and can be a system that performs simpler control.

Further, in the whole building air conditioning system according to the first and second embodiments, the carbon dioxide measuring unit 101 is provided in the mobile terminal 100, but it may be modified as follows. That is, the carbon dioxide measuring unit 101 may be provided in a ventilation device, a lighting device, an operation switch of the ventilation device, an operation switch of the lighting device, a power outlet, or the like installed in the living room 2. Further, the carbon dioxide measuring unit 101 may be modified so as to be provided in home appliances such as an air purifying device, a fan, a dehumidifying device, a humidifying device, and an air conditioning device installed in the living room 2. Further, the carbon dioxide measuring unit 101 may be changed so as to be provided independently somewhere in the living room 2. As a result, the whole building air-conditioning system related to these modifications can improve the degree of freedom of configuration.

Further, the sleep preparation detection unit 320 may be modified to detect the sleep preparation state based on information other than the determination result of the sleep state determination unit 340. The sleep preparation detection unit related to this modification may be configured to detect that the user is in the sleep preparation state, for example, by the bedtime set by the user. As a result, the sleep preparation detection unit related to this deformation can relatively easily detect the sleep preparation state of the user, and the entire building air conditioning system related to this deformation can be constructed with a different configuration. Further, the whole building air conditioning system according to this modification may be modified so that the carbon dioxide concentration of the living room 2 in which the user is present approaches the first threshold value before the user's bedtime. The whole building air-conditioning system according to this modification controls, for example, not to ventilate even if the carbon dioxide concentration reaches the third threshold value or more, but to ventilate at the first threshold value or more, one hour before the user's bedtime. As a result, when the user enters the bed-ready state, the carbon dioxide concentration in the living room 2 becomes the first threshold value, so that the whole building air-conditioning system related to this deformation can shorten the time until the user falls asleep. can.

Further, the sleep preparation detection unit 320 does not detect the user's sleep preparation state using vital data or the user's bedtime, but sleeps based on the user's input that the user is in the sleep preparation state. It may be modified to detect the ready state. For example, as an example, a reception unit that accepts the above input is provided in the mobile terminal 100, the user inputs that the user himself / herself is in a sleep preparation state via the mobile terminal 100, and the reception unit accepts this input, and the system controller 10 Notify to. As a result, the sleep preparation detection unit related to this deformation can more accurately detect that the user is in the sleep preparation state. That is, by receiving the input that the user himself / herself is in the sleep preparation state at the reception unit, the sleep preparation detection unit related to this deformation can know the sleep preparation state of the user. Therefore, the sleep preparation detection unit related to this deformation can more accurately and easily detect the sleep preparation state of the user. That is, the whole building air-conditioning system according to this modification further includes a reception unit for receiving an input from the user to the effect that the user himself / herself is in a sleep ready state. Then, the sleep preparation detection unit related to this deformation detects that the user is in the sleep preparation state based on the input received by the reception unit.

Further, the sleep preparation detection unit 320 is modified to detect that the user is in the sleep preparation state by another method, for example, by installing a camera in each room and detecting the user's sleep preparation state from the image. May be. As a result, the entire building air conditioning system related to this modification can be constructed with various configurations.

Further, the determination unit 350 according to the first embodiment may be modified so as not to determine the living room 2 in which the mobile terminal 100 exists. In this case, for example, by registering the information of the living room 2 in which the user himself / herself sleeps in the system controller 10 in advance, the determination unit related to this modification can specify the living room 2 in which the user sleeps. Then, the control unit related to this deformation can perform ventilation control for the living room 2 registered by the user. Further, even if the carbon dioxide measuring unit 101 is provided in a device other than the mobile terminal 100 and the concentration storage unit 300 is modified to store the carbon dioxide concentration in the living room 2 measured by the carbon dioxide measuring unit 101 when the user has fallen asleep in the past. good. As a result, the whole building air conditioning system according to this modification can perform the same control as the ventilation control according to the embodiment even if the mobile terminal 100 does not exist. As a result, the entire building air conditioning system related to this modification can be constructed with various configurations. The modification of the determination unit 350 may be applied to the determination unit 350A according to the second embodiment.

Further, although the ventilation device is controlled by the control unit 200 of the system controller 10 in the first embodiment and by the control unit 200A of the system controller 10A in the second embodiment, it may be modified to be performed by the mobile terminal 100. .. In the whole building air-conditioning system related to this modification, for example, the mobile terminal 100 may be used as a smartphone, software such as an application may be provided to the smartphone, and the ventilation device may be controlled by the smartphone. As a result, the entire building air-conditioning system related to this modification can control the ventilation device with a smartphone carried by the user.

Further, the whole building air-conditioning system according to the first and second embodiments may be modified so as to perform ventilation control by the smartphone by using a wearable terminal worn by the user, which is different from the above-mentioned smartphone. The whole building air-conditioning system according to this modification includes, for example, a carbon dioxide measuring unit 101 and a vital data measuring unit in a wearable terminal. Then, the smartphone acquires the measurement data of the carbon dioxide measuring unit 101 and the vital data measuring unit, and the smartphone performs ventilation control. As a result, the smartphone related to this transformation can acquire vital data, and the smartphone related to this transformation can perform more complicated control.

Further, in the whole building air conditioning system according to the first and second embodiments, the system controller 10 (or the system controller 10A) installed in the general house 1 controls the ventilation of the ventilation device, but the cloud is provided and the cloud ventilates. It may be modified to control the device. As a result, the whole building air conditioning system related to this modification can improve the degree of freedom of configuration.

(Summary of this disclosure)
The ventilation system according to the present disclosure is configured to include a ventilation device, a carbon dioxide measuring unit, a sleep preparation detection unit, and a control unit. The ventilation device is for ventilating a predetermined space. The carbon dioxide measuring unit measures the carbon dioxide concentration in a predetermined space. The sleep preparation detection unit detects that the user in the predetermined space is in the sleep preparation state. Then, the control unit controls ventilation by the ventilation device based on the detection result of the sleep preparation detection unit and the carbon dioxide concentration measured by the carbon dioxide measurement unit.

As described above, the ventilation system according to the present disclosure controls the carbon dioxide concentration in the predetermined space by the ventilation device based on the detection result that the user is in the sleep preparation state. That is, since the ventilation system according to the present disclosure controls the ventilation by the ventilation device in consideration of the sleep preparation state of the user, the carbon dioxide concentration suitable for the sleep preparation state of the user can be set. Therefore, the ventilation system according to the present disclosure can be used to realize a space suitable for the user's sleep preparation state.

Further, the ventilation system according to the present disclosure may further include a concentration storage unit that stores a first threshold value indicating a carbon dioxide concentration suitable for falling asleep and a second threshold value larger than the first threshold value. Then, the control unit stops ventilation by the ventilation device when the sleep preparation detection unit detects that the user is in the sleep preparation state and the carbon dioxide concentration measured by the carbon dioxide measurement unit is smaller than the second threshold value. It may be configured to control the operation.

As a result, the ventilation system according to the present disclosure can increase the carbon dioxide concentration in the space in which the user is present when the user is in a sleep ready state, so that a space in which the user can easily fall asleep can be realized. Therefore, the ventilation system according to the present disclosure can shorten the time from the user entering the sleep preparation state to falling asleep.

Further, the control unit performs ventilation by the ventilation device when the sleep preparation detection unit detects that the user is in the sleep preparation state and the carbon dioxide concentration measured by the carbon dioxide measurement unit is equal to or higher than the second threshold value. It may be configured to control such as.

Thereby, the ventilation system according to the present disclosure can prevent the carbon dioxide concentration from increasing and the user's human body from becoming dangerous when the user is in a sleep ready state.

Further, the second threshold value may be configured to be a value within the range of the carbon dioxide concentration defined as suitable for falling asleep and a value lower than the carbon dioxide concentration considered to be harmful to the human body.

Thereby, the ventilation system according to the present disclosure can maintain the carbon dioxide concentration in the space where the user is present within the carbon dioxide concentration range which is considered to be suitable for the user to fall asleep.

Further, the sleep preparation detection unit may be configured to detect that the user is in the sleep preparation state according to the bedtime set by the user.

Thereby, the ventilation system according to the present disclosure can relatively easily detect the sleep preparation state of the user at the time set by the user.

Further, the ventilation system according to the present disclosure may further include a vital data acquisition unit that acquires at least one data of the user's blood pressure, heart rate, respiration and body movement as vital data. Then, the sleep preparation detection unit may be configured to detect that the user is in the sleep preparation state based on the vital data acquired from the vital data acquisition unit.

Thereby, the ventilation system according to the present disclosure can know the sleep preparation state of the user from the vital data. Therefore, it is possible to more accurately grasp the sleep preparation state of the user.

Further, the ventilation system according to the present disclosure further includes a reception unit for receiving an input from the user to the effect that the user is in a sleep ready state, and the sleep preparation detection unit allows the user to sleep based on the input received by the reception unit. It may be configured to detect that it is in the ready state.

Thereby, the ventilation system according to the present disclosure can detect that the user himself / herself is in a sleep ready state by the input from the user. Therefore, the ventilation system according to the present disclosure can more accurately detect the sleep preparation state of the user.

Further, the ventilation system according to the present disclosure further includes a concentration acquisition unit that acquires the carbon dioxide concentration measured by the carbon dioxide measurement unit, and the concentration storage unit further indicates the carbon dioxide concentration at the time of sleep onset of the user. May be memorized. Then, when the control unit detects that the sleep preparation detection unit is in the sleep preparation state, the carbon dioxide concentration acquired by the concentration acquisition unit is the sleep onset concentration information stored in the concentration storage unit when the user falls asleep. It may be configured to control the ventilation by the ventilation device so as to approach the carbon dioxide concentration in.

Thereby, the ventilation system according to the present disclosure can bring the carbon dioxide concentration of the space in which the user is present close to the carbon dioxide concentration at the time of falling asleep when the user enters the sleep preparation state, so that the user sleeps. It is possible to realize a space that is easy to get on. Therefore, the ventilation system according to the present disclosure can shorten the time from the user entering the sleep preparation state to falling asleep.

In addition, the carbon dioxide measuring unit is provided in at least one of a ventilation device, a lighting device, an operation switch of the ventilation device, an operation switch of the lighting device, a power outlet, a home electric appliance, and a portable terminal carried by the user, which are provided in a predetermined space. It may be configured to be possible.

Thereby, the ventilation system according to the present disclosure can be constructed with various configurations.

Further, the concentration storage unit stores the sleep-onset concentration information in association with the terminal information indicating the mobile terminal possessed by the user, and the control unit corresponds to the terminal information as the sleep-onset concentration information stored in the concentration storage unit. It may be configured to use the concentration information at the time of falling asleep.

Thereby, in the ventilation system according to the present disclosure, for example, by providing a carbon dioxide measuring unit in a mobile terminal, it is possible to omit installing a carbon dioxide measuring unit in each space. Further, the ventilation system according to the present disclosure stores the carbon dioxide concentration when the user falls asleep in association with the mobile terminal carried by the user. Therefore, for example, when the ventilation device according to the present disclosure has a plurality of predetermined spaces for ventilation, even if the space in which the user exists changes, the carbon dioxide concentration in the space approaches the carbon dioxide concentration when the user falls asleep. It can be controlled as follows. Therefore, the ventilation system according to the present disclosure can have a carbon dioxide concentration suitable for the user's sleep preparation state regardless of the space in which the user sleeps.

The ventilation system according to the present disclosure further includes a determination unit for determining the number of mobile terminals existing in a predetermined space, and has a plurality of users. It may be stored in association with the user's terminal information. Then, when the control unit detects that the sleep preparation detection unit is in the sleep preparation state and the number of mobile terminals determined by the determination unit is a plurality, the control unit controls ventilation by the ventilation device as follows. Is also good. That is, in the control unit, the carbon dioxide concentration acquired by the concentration acquisition unit is stored in the concentration storage unit, and the sleep concentration information corresponding to each of the plurality of terminal information indicating each of the plurality of mobile terminals determined by the determination unit is indicated. Ventilation by a ventilation device may be controlled so as to approach the maximum or average carbon dioxide concentration among the carbon dioxide concentrations at the time of falling asleep.

As a result, the control unit controls the carbon dioxide concentration at the time of falling asleep, which is suitable for all users even when there are a plurality of users carrying mobile terminals in the same space. Therefore, the ventilation system according to the present disclosure can make the carbon dioxide concentration in the space where a plurality of users exist to be suitable for the sleep preparation state of all the users existing there.

Further, the control unit changes the first threshold value based on the carbon dioxide concentration at sleep onset indicated by the sleep-onset concentration information stored in the concentration storage unit, and controls ventilation by the ventilation device based on the changed first threshold value. It may be configured as.

Thereby, the ventilation system according to the present disclosure changes the carbon dioxide concentration suitable for falling asleep in the predetermined space to the carbon dioxide concentration at the time of falling asleep of the user who sleeps in the predetermined space. Therefore, the ventilation system according to the present disclosure can set the carbon dioxide concentration when the user is in a sleep ready state in a predetermined space to a carbon dioxide concentration more suitable for the user's sleep prepared state.

This disclosure is useful as a ventilation system that ventilates a predetermined space.

1 General house 2 Living room 2a Living room 2b Living room 2c Living room 2d Living room 3 Conveying fan 3a Conveying fan 3b Conveying fan 3c Conveying fan 3d Conveying fan 4 Outside air introduction fan 5 Exhaust fan 5a Exhaust fan 5b Exhaust fan 5c Exhaust fan 5d Exhaust fan 6 6a Circulation fan 6b Circulation fan 6c Circulation fan 6d Circulation fan 9 Air conditioner 10 System controller 10A System controller 11 Living room temperature sensor 11a Living room temperature sensor 11b Living room temperature sensor 11c Living room temperature sensor 11d Living room temperature sensor 12 Living room humidity sensor 12a Living room humidity sensor 12c Living room humidity sensor 12d Living room humidity sensor 14 Air conditioning room temperature sensor 15 Air conditioning room humidity sensor 16 Humidifier 17 Dehumidifier 18 Air conditioning room 19 Input / output terminal 20 Whole building air conditioning system 100 Mobile terminal 100a Mobile terminal 100b Mobile terminal 100c Mobile terminal 101 carbon dioxide measurement unit 101a carbon dioxide measurement unit 101b carbon dioxide measurement unit 101c carbon dioxide measurement unit 200 control unit 200A control unit 210 ventilation control unit 220 ventilation determination unit 220A ventilation determination unit 221 concentration comparison unit 221A concentration comparison unit 222 threshold change unit 300 Concentration storage unit 301 Sleeping carbon dioxide concentration table 302 Terminal information 303 Sleeping concentration information 304 Sleeping carbon dioxide concentration table 305 Terminal information 306 Sleeping concentration information 310 Concentration acquisition unit 320 Sleep preparation detection unit 330 Ventilation data acquisition unit 340 Sleep Status judgment unit 350 Judgment unit 350A Judgment unit 1001 Ventilation system 1002 Ventilation device 1003 Control unit 1004 Carbon dioxide detector A User B User C User CO2a Carbon dioxide concentration CO2b Carbon dioxide concentration CO2c Carbon dioxide concentration

Claims

A ventilation device for ventilating a predetermined space,
A carbon dioxide measuring unit that measures the carbon dioxide concentration in the predetermined space,
A sleep preparation detection unit that detects that the user in the predetermined space is in a sleep preparation state,
A ventilation system comprising: a control unit for controlling the ventilation by the ventilation device based on the detection result of the sleep preparation detection unit and the carbon dioxide concentration measured by the carbon dioxide measurement unit.
The ventilation system further includes a concentration storage unit that stores a first threshold value indicating the carbon dioxide concentration suitable for falling asleep and a second threshold value larger than the first threshold value.
The control unit
When the sleep preparation detection unit detects that the user is in the sleep preparation state and the carbon dioxide concentration measured by the carbon dioxide measurement unit is smaller than the second threshold value, the ventilation by the ventilation device is performed. The ventilation system according to claim 1, wherein the ventilation system is controlled to stop.
The control unit
When the sleep preparation detection unit detects that the user is in the sleep preparation state and the carbon dioxide concentration measured by the carbon dioxide measurement unit is equal to or higher than the second threshold value, the ventilation by the ventilation device is performed. The ventilation system according to claim 2, wherein the ventilation system is controlled to perform.
The second threshold is
The ventilation system according to claim 2 or 3, wherein the value is within the range of the carbon dioxide concentration defined as suitable for falling asleep and is lower than the carbon dioxide concentration which is harmful to the human body. ..
The sleep preparation detection unit is
The ventilation system according to any one of claims 1 to 4, wherein the user detects that the user is in the sleep ready state according to the bedtime set by the user.
The ventilation system further includes a vital data acquisition unit that acquires at least one data of the user's blood pressure, heart rate, respiration, and body movement as vital data.
The sleep preparation detection unit is
The ventilation system according to any one of claims 1 to 4, wherein the user is detected to be in the sleep preparation state based on the vital data acquired from the vital data acquisition unit.
The ventilation system further includes a reception unit that receives an input from the user that the user himself / herself is in the sleep ready state.
The sleep preparation detection unit is
The ventilation system according to any one of claims 1 to 4, wherein the user detects that the user is in the sleep preparation state based on the input received by the reception unit.
The ventilation system further includes a concentration acquisition unit that acquires the carbon dioxide concentration measured by the carbon dioxide measurement unit.
The concentration storage unit further stores sleep-onset concentration information indicating the carbon dioxide concentration at the time of sleep onset of the user.
The control unit
When the sleep preparation detection unit detects that it is in the sleep preparation state, the carbon dioxide concentration acquired by the concentration acquisition unit is the sleep onset of the user indicated by the sleep onset concentration information stored in the concentration storage unit. The ventilation system according to any one of claims 2 to 4, wherein the ventilation by the ventilation device is controlled so as to approach the carbon dioxide concentration at the time.
The carbon dioxide measuring unit is
It is provided in at least one of the ventilation device, the lighting device, the operation switch of the ventilation device, the operation switch of the lighting device, the power outlet, the home electric appliance, and the portable terminal carried by the user, which are provided in the predetermined space. The ventilation system according to claim 8.
The concentration storage unit is
The sleep-onset concentration information and the terminal information indicating the mobile terminal possessed by the user are stored in association with each other.
The control unit
The ventilation system according to claim 8, wherein the sleep-onset concentration information corresponding to the terminal information is used as the sleep-onset concentration information stored in the concentration storage unit.
The ventilation system further includes a determination unit for determining the number of the mobile terminals existing in the predetermined space.
There are multiple users
The concentration storage unit is
For each of the plurality of users, the sleep-onset concentration information of the user and the terminal information of the user are stored in association with each other.
The control unit
When the sleep preparation detection unit detects that the sleep preparation state is in the sleep preparation state, and the number of the mobile terminals determined by the determination unit is a plurality, the carbon dioxide concentration acquired by the concentration acquisition unit is the carbon dioxide concentration. The maximum or average of the carbon dioxide concentrations at sleep onset indicated by the sleep-onset concentration information corresponding to each of the plurality of terminal information indicating each of the plurality of mobile terminals determined by the determination unit, which is stored by the concentration storage unit. 10. The ventilation system according to claim 10, wherein the ventilation by the ventilation device is controlled so as to approach the carbon dioxide concentration of the above.
The control unit
The first threshold value is changed based on the carbon dioxide concentration at the time of falling asleep indicated by the concentration information at the time of falling asleep stored in the concentration storage unit, and the ventilation by the ventilation device is performed based on the changed first threshold value. The ventilation system according to any one of claims 8 to 11, characterized in that it is controlled.