WO2023209764A1

WO2023209764A1 - Air-conditioning control device, air-conditioning system, and air-conditioning control method

Info

Publication number: WO2023209764A1
Application number: PCT/JP2022/018704
Authority: WO
Inventors: 良丞小橋; 大片多; 友幸中田
Original assignee: 三菱電機株式会社
Priority date: 2022-04-25
Filing date: 2022-04-25
Publication date: 2023-11-02

Abstract

The purpose of the present invention is to provide a technique capable of carrying out appropriate ventilation against viruses in terms of suppression of the spread of viruses in a room. This air-conditioning control device controls one or more air-conditioners, and the one or more air-conditioners are disposed in a room. The air-conditioning control device is provided with voice sensors. The voice sensors detect voice information, that is, information regarding voices of people who are present in the room. In addition, the air-conditioning control device is provided with a control unit. The control unit controls ventilation of the room by the air-conditioners on the basis of the voice information detected by the voice sensors.

Description

Air conditioning control device, air conditioning system and air conditioning control method

The present disclosure relates to an air conditioning control device, an air conditioning system, and an air conditioning control method.

Patent Document 1 proposes air control that controls ventilation based on the number of people in a vehicle. On the other hand, there is a need for technology that can suppress the spread of highly infectious viruses into the space inside a vehicle.

Japanese Patent Application Publication No. 6-043252

From the perspective of suppressing the spread of the virus, even if there are many people in the vehicle, if there are no people talking, a certain degree of ventilation is not necessary. Ventilation is required. However, in the conventional technology, ventilation is controlled based on the number of people in the vehicle, so there are cases where appropriate ventilation cannot be achieved.

Therefore, the present disclosure has been made in view of the above-mentioned problems, and aims to provide a technology that allows appropriate ventilation against viruses.

An air conditioning control device according to the present disclosure is an air conditioning control device that controls one or more air conditioners installed in a room, and includes a voice sensor that detects voice information that is voice information of a person in the room; and a control unit that controls ventilation of the room by the air conditioner based on the audio information detected by the audio sensor.

According to the present disclosure, ventilation of a room by an air conditioner is controlled based on audio information detected by an audio sensor. According to such a configuration, appropriate ventilation can be performed against viruses.

Objects, features, aspects, and advantages of the present disclosure will become more apparent from the following detailed description and accompanying drawings.

1 is a diagram showing an example of arrangement of an air conditioning control device according to Embodiment 1. FIG. 1 is a diagram showing the configuration of an air conditioner according to Embodiment 1. FIG. 3 is a flowchart showing the operation of the air conditioning control device according to the first embodiment. 7 is a flowchart showing the operation of the air conditioning control device according to Modification 2 of Embodiment 1. FIG. 3 is a block diagram showing the configuration of a train radio system according to a third modification of the first embodiment. FIG. FIG. 7 is a diagram illustrating an example arrangement of an air conditioning control device according to a second embodiment. 7 is a flowchart showing the operation of the air conditioning control device according to the second embodiment. FIG. 7 is a diagram illustrating an example arrangement of an air conditioning control device according to a third embodiment. FIG. 7 is a diagram showing the configuration of an air conditioner according to Embodiment 3. 7 is a flowchart showing the operation of the air conditioning control device according to Embodiment 3.

<Embodiment 1>
FIG. 1 is a diagram showing an example of the arrangement of the air conditioning control device according to the first embodiment, and specifically is a plan view of a room 100 in which the air conditioning control device is provided. The air conditioning control device controls one or more air conditioners provided in the room 100, and the air conditioning control device and the one or more air conditioners are included in the air conditioning system.

In the first embodiment, a room 100, an air conditioning control device, and one or more air conditioners are provided in a vehicle 1 such as a train or a bus. In the first embodiment, the room 100 includes a plurality of room parts 100a to 100j obtained by dividing the room 100, and one or more air conditioners are provided corresponding to the plurality of room parts 100a to 100j. It includes a plurality of air conditioners 50a to 50j. Room portions 100a to 100j are each set as a range where air conditioning by air conditioners 50a to 50j is effective, for example.

The air conditioning control device includes an audio sensor and a control section. In the first embodiment, the sound sensors are a plurality of sound sensors 25a to 25j provided corresponding to the plurality of room parts 100a to 100j, and furthermore, the plurality of air conditioners 50a to 50j, and the control unit is the determination unit 26. It is. The plurality of audio sensors 25a to 25j, the determination unit 26, and the plurality of air conditioners 50a to 50j are communicably connected via at least one of wired and wireless communication. Whether wired or wireless is used is determined by ease of application to equipment and cost.

The plurality of sound sensors 25a to 25j detect sound information that is sound information of the person 10 in the room 100. In the first embodiment, the audio sensor 25a detects the volume of the audio of the person 10 in the room portion 100a as audio information. Similarly, the plurality of sound sensors 25b to 25j each detect the volume of the sound of the person 10 in the room portions 100b to 100j as sound information.

The determination unit 26 transmits control signals to the plurality of air conditioners 50a to 50j, respectively, based on the sound volume detected as audio information by the plurality of sound sensors 25a to 25j, thereby determining whether the plurality of air conditioners 50a to 50j are in a room. Ventilation of sections 100a-100j is controlled respectively.

In the first embodiment, the determination unit 26 determines whether the room portions 100a to 100a are controlled by the plurality of air conditioners 50a to 50j based on the sound volumes detected by the plurality of sound sensors 25a to 25j and a plurality of predetermined threshold values. 100j of ventilation is controlled in stages. Hereinafter, a first range is a volume range in which conversation is not substantially taking place, a second range is a range in which the conversation volume is moderate, and a volume range is in which the conversation volume is high. A configuration in which the third range is predefined by a plurality of predetermined threshold values will be described.

Note that the determination unit 26 may be realized by the cooperation of hardware such as a CPU (Central Processing Unit) and memory (not shown) and software such as a control program for controlling operations, or may be implemented by It may also be realized by dedicated hardware such as a circuit.

FIG. 2 is a diagram showing the configuration of the air conditioner 50a according to the first embodiment, and specifically is a sectional view of the room 100. The configuration of the air conditioner 50a will be described below, but the configurations of the air conditioners 50b to 50j are also similar.

The air conditioner 50a includes an intake air conditioner 501 that takes in air for ventilation, and

exhaust air conditioners

503 and 504 that exhaust air for ventilation. The intake air conditioner 501 is provided on the ceiling side of the vehicle 1. The exhaust air conditioner 503 is provided between the ceiling and the floor of the vehicle 1, and the exhaust air conditioner 504 is provided on the floor side of the vehicle 1. When the intake air conditioner 501 operates and the

exhaust air conditioners

502 and 503 operate, air flows from the intake air conditioner 501 on the ceiling side to the

exhaust air conditioners

503 and 504 as shown by

arrows

80a and 80b. Note that strong intake air may spread viruses, so it is preferable that the strength of intake air is smaller than the strength of exhaust air.

<Operation>
FIG. 3 is a flowchart showing the operation of the air conditioning control device according to the first embodiment.

First, in step S1, the plurality of audio sensors 25a to 25j detect the volume of the voices of people in the room 100 as audio information.

In step S2, the determination unit 26 determines whether there is a change in any of the volumes detected by the plurality of audio sensors 25a to 25j. If it is determined that there is a change in any of the volumes detected by the plurality of audio sensors 25a to 25j, the process proceeds to step S3. If it is determined that there is no change in any of the volumes detected by the plurality of audio sensors 25a to 25j, the process returns to step S1.

In step S3, the determination unit 26 determines whether the volume determined to have changed is within the first range. In other words, the determination unit 26 determines whether or not a conversation is actually taking place. If it is determined that the volume is within the first range, the process proceeds to step S4, and if it is determined that the volume is outside the first range, the process proceeds to step S5.

In step S4, the determining unit 26 identifies the audio sensor that detected the volume determined to have changed, and sets the ventilation air volume of the air conditioner corresponding to the audio sensor to a weak wind. Note that the determination unit 26 may set the ventilation of the air conditioner to off instead of setting the ventilation to a weak wind. After that, the process proceeds to step S5.

In step S5, the determination unit 26 determines whether the volume determined to have changed is within the second range. In other words, the determination unit 26 determines whether or not a conversation is occurring at a medium volume. If it is determined that the volume is within the second range, the process proceeds to step S6, and if it is determined that the volume is outside the second range, the process proceeds to step S7.

In step S6, the determination unit 26 identifies the audio sensor that detected the volume determined to have changed, and sets the ventilation air volume of the air conditioner corresponding to the audio sensor to medium. Note that the fan rotation speed of a medium-sized air conditioner may be set higher than that of a low-speed air conditioner, and the number of operating

exhaust air conditioners

502 and 503 in FIG. The number may be greater than the number of operating

exhaust air conditioners

502 and 503 in the air conditioner. Thereafter, the process proceeds to step S7.

In step S7, the determination unit 26 determines whether the volume determined to have changed is within the third range. In other words, the determination unit 26 determines whether or not a conversation is occurring at a high volume. If it is determined that the volume is within the third range, the process proceeds to step S8, and if it is determined that the volume is outside the third range, the operation of FIG. 3 ends.

In step S8, the determination unit 26 identifies the audio sensor that detected the volume determined to have changed, and sets the ventilation air volume of the air conditioner corresponding to the audio sensor to a strong wind. Note that the fan rotation speed of a strong-wind air conditioner may be higher than that of a medium-wind air conditioner, and the number of operating

exhaust air conditioners

502 and 503 in FIG. The number of operating

exhaust air conditioners

502, 503 may be greater than the number of

exhaust air conditioners

502, 503 in operation. After that, the operation of FIG. 3 ends.

In the example of FIG. 1, the person 10 having the conversation is marked with dot hatching. In this example, the volume of the conversation of the person 10 in the room part 100e is high, the volume of the conversation of the person 10 in the room part 100g is medium, and the other people 10 are not having a conversation.

In this case, the volume of the conversation of the person 10 in the room portion 100e is high, and the volume detected by the audio sensor 25e is high, so the room portion 100e is ventilated with strong wind by the air conditioner 50e. Further, since the volume of the conversation of the person 10 in the room portion 100g is medium, and the volume detected by the audio sensor 25g is medium, ventilation of the room portion 100g by the air conditioner 50g is performed at medium volume. Ventilation of the room sections 100a to 100d, 100f, and 100h to 100i by the other air conditioners 50a to 50d, 50f, and 50h to 50i is performed with weak wind.

<Summary of Embodiment 1>
According to the air conditioning control device according to the first embodiment as described above, the determination unit 26 controls the ventilation of the room 100 by the air conditioners 50a to 50j based on the audio information detected by the audio sensors 25a to 25j. do. According to such a configuration, appropriate ventilation can be performed against viruses. For example, when people are having a conversation, the ventilation by the air conditioners 50a to 50j can be strengthened, so it is possible to suppress the spread of viruses due to people's conversations. Furthermore, when people are not talking, the ventilation by the air conditioners 50a to 50j can be weakened, so for example, the temperature inside the room 100 can be lowered in the summer, or the temperature inside the room 100 can be lowered in the winter. It is possible to reduce the energy consumption of air conditioners for raising the temperature. As a result, it can be expected that the life of the fans of the air conditioners 50a to 50j will be extended and the frequency of maintenance of the air conditioners 50a to 50j will be reduced.

Furthermore, in the first embodiment, the determination unit 26 controls ventilation based on the volume detected by the audio sensors 25a to 25j and one or more predetermined threshold values. According to such a configuration, the strength of ventilation can be controlled according to the volume of conversation.

<Modification 1>
In the first embodiment, the room 100 and the air conditioning control device are provided in the vehicle 1 such as a train or a bus, but the present invention is not limited to this. For example, the room 100 and the air conditioning control device may be provided in a moving body that can carry a plurality of passengers, or may be provided in a building that accommodates a large number of passengers.

Further, the one or more air conditioners may be one air conditioner instead of multiple air conditioners, and the audio sensor may be one audio sensor having a directional detection function instead of multiple audio sensors. Good too. In other words, the determination unit 26 may control ventilation of the room 100 by one or more air conditioners based on audio information detected by one or more audio sensors.

Furthermore, in the first embodiment, the audio information includes the volume of the audio, but is not limited to this. The audio information may include, for example, the type of sound (i.e., frequency) such as coughing or sneezing, the duration of the audio (i.e., conversation time), or the number of overlapping sounds (i.e., the number of people in the conversation). good. Note that a case where the audio information includes coughing, sneezing, etc. will be described in Embodiment 2.

Further, in the first embodiment, the determination unit 26 controls the air conditioner 50e to increase ventilation when the volume detected by the audio sensor 25e is high, for example, but the present invention is not limited to this. For example, when the volume detected by the audio sensor 25e is high, the determination unit 26 may control to strengthen the ventilation not only of the air conditioner 50e but also of the surrounding

air conditioners

50d, 50i, and 50j. good.

Furthermore, in the first embodiment, each of the air conditioners 50a to 50j includes the intake air conditioner 501 of FIG. 2 and the

exhaust air conditioners

503 and 504, but is not limited to this. For example, each of the air conditioners 50a to 50j may be either an intake air conditioner or an exhaust air conditioner combined with a ventilation hole or a window.

Further, in the first embodiment, the first range to the third range are defined by a plurality of predetermined threshold values, but the range is not limited to this. For example, multiple threshold values may be set to arbitrary values, the number of threshold values may be one, or ventilation by an air conditioner may be controlled in two or four or more stages instead of three. Good too.

<Modification 2>
FIG. 4 is a flowchart showing the operation of the air conditioning control device according to the second modification. The flowchart in FIG. 4 is similar to the flowchart in FIG. 3 with the addition of steps S11 and S12, so steps S11 and S12 will be mainly described below.

After it is determined in step S2 that there is a change in any of the volumes detected by the plurality of audio sensors 25a to 25j, the process proceeds to step S11.

In step S11, the determination unit 26 determines whether the change in volume is an increase. If it is determined that the change in volume is an increase, the process advances to step S3. If it is determined that the change in volume is not an increase, that is, it is determined that the change in volume is a decrease, the process proceeds to step S12.

In step S12, the determination unit 26 waits for a predetermined waiting time. After that, the process proceeds to step S3. After step S3, the determination unit 26 identifies the audio sensor that detected the volume that has been determined to have increased, and performs the same control as after step S3 of the first embodiment for the air conditioner corresponding to the audio sensor.

According to such a configuration, after waiting for a predetermined standby time, the determination unit 26 identifies the audio sensor that has detected the volume that has been determined to have decreased, and adjusts the ventilation of the air conditioner corresponding to the audio sensor. Decrease the air flow. According to such a configuration, it can be expected that viruses caused by human conversation can be sufficiently eliminated.

<Modification 3>
In the first embodiment, the determination unit 26 controls the ventilation of the room by the air conditioner based on the determination result, but the present invention is not limited to this. For example, the determination unit 26 may control the ventilation of the room by the air conditioner, taking into account operations on the user interface by the conductor, driver, station staff, etc. of the vehicle 1.

FIG. 5 is a block diagram showing the configuration of a train radio system according to Modification 3. The vehicle 1 is provided with a conductor interface 110 that is a user interface used by the conductor, a driver interface 120 that is a user interface used by the driver, and a vehicle transceiver section 130. The ground equipment 3, which is external to the vehicle 1, is provided with a ground transmitter/receiver 140, a station staff interface 150 that is a user interface used by station staff, and a data storage unit 160.

The determination unit 26 is communicably connected to the conductor interface 110, the driver interface 120, and the vehicle transceiver unit 130 via at least one of wired and wireless communication. The vehicle transmitter/receiver 130 and the ground transmitter/receiver 140 perform wireless communication, so that the determination unit 26 transmits data to the station staff interface 150 of the ground equipment 3 via the vehicle transmitter/receiver 130 and the ground transmitter/receiver 140. It is communicatively connected to the storage section 160.

The determination unit 26 transmits the voice information detected by the plurality of voice sensors 25a to 25j to the conductor interface 110, the driver interface 120, and the station staff interface 150. The conductor interface 110, the driver interface 120, and the station staff interface 150 each notify the conductor, driver, and station staff of the transmitted audio information by voice or display.

Either the conductor, the driver, or the station staff confirms the notified voice information and performs operations to control the ventilation of the air conditioners 50a to 50j via the conductor interface 110, driver interface 120, or station staff interface. 150. The determination unit 26 determines whether the air conditioners 50a to 50j are in the room 100 based on the plurality of audio sensors 25a to 25j and the operation of at least one of the conductor interface 110, the driver interface 120, and the station staff interface 150. control ventilation.

According to such a configuration, the ventilation of the room 100 can be controlled by either the conductor, the driver, or the station staff. Additionally, even if it is difficult for a passenger to pay attention to another passenger who is having a conversation, the conductor or other person can check the audio information and give a warning such as refraining from conversation. Become.

In addition to the above, the determination unit 26 also collects voice information detected by the plurality of voice sensors 25a to 25j, vehicle information of the vehicle 1, mounting position information of the plurality of voice sensors 25a to 25j, and detection time information of the voice information. may be transmitted to the data storage section 160. Then, the data storage unit 160 may accumulate the transmitted audio information, vehicle information, attachment position information, and audio information detection time information.

According to such a configuration, the station staff can appropriately control the ventilation of the room 100 by the air conditioners 50a to 50j by referring to the data storage unit 160 and performing operations. Furthermore, the ground device 3 can also detect abnormalities around the vehicle 1 by analyzing the volume information stored in the data storage section 160. Although the data storage unit 160 is provided in the ground device 3 here, it may also be provided in the vehicle 1.

Modifications 1 to 3 described above may be applied not only to the first embodiment but also to the second and third embodiments.

<Embodiment 2>
FIG. 6 is a diagram showing an example of the arrangement of the air conditioning control device according to the second embodiment, and specifically is a plan view of the room 100. Hereinafter, among the constituent elements according to the second embodiment, constituent elements that are the same or similar to the above-mentioned constituent elements will be given the same or similar reference numerals, and different constituent elements will be mainly explained.

In the first embodiment, the determination unit 26 controlled ventilation based on the volume detected by the audio sensors 25a to 25j. On the other hand, in the second embodiment, when determining that the audio information detected by the audio sensors 25a to 25j includes a person's cough or sneeze, the determination unit 26 controls whether the air conditioners 50a to 50j control the room 100. Increase ventilation. For an air conditioner controlled to increase ventilation, the fan rotation speed may be increased, or the number of operating

exhaust air conditioners

502 and 503 in FIG. 2 may be increased.

<Operation>
FIG. 7 is a flowchart showing the operation of the air conditioning control device according to the second embodiment.

In step S21, the plurality of audio sensors 25a to 25j detect the voices of people in the room 100 as audio information.

In step S22, the determination unit 26 determines whether the audio information detected by the audio sensors 25a to 25j includes a person's cough or sneeze. If it is determined that the audio information includes a human cough or sneeze, the process proceeds to step S23, and if it is determined that the audio information does not include a human cough or sneeze, the process returns to step S21.

In step S23, the determination unit 26 identifies the voice sensor that detected the voice information determined to include human coughing or sneezing, and sets the ventilation air volume of the air conditioner corresponding to the detected voice sensor to strong wind. . Hereinafter, the audio sensor identified here will be referred to as a detection audio sensor.

The determination unit 26 identifies a voice sensor that is a short distance from the detected voice sensor, and sets the ventilation air volume of the air conditioner corresponding to the voice sensor to a strong wind.

In step S24, the determination unit 26 identifies a voice sensor that is at a medium distance from the detected voice sensor, and sets the ventilation air volume of the air conditioner corresponding to the voice sensor to medium.

In step S25, the determination unit 26 identifies a voice sensor that is located at a long distance from the detected voice sensor, and sets the ventilation air volume of the air conditioner corresponding to the voice sensor to a weak wind. After that, the operation of FIG. 7 ends.

In the example of FIG. 6, the person 10 who coughed or sneezed is diagonally hatched, and this person 10 is in the room portion 100e. In this case, since the audio sensor 25e is specified as the detected audio sensor, the room portion 100e is ventilated with strong wind by the air conditioner 50e. Furthermore, since the

sound sensors

25d, 25i, and 25j are identified as sound sensors whose distance from the detection sound sensor is short, the room portion 100e is ventilated with strong wind by the

air conditioners

50d, 50i, and 50j.

Furthermore, since the

sound sensors

25c and 25h are identified as sound sensors whose distance from the detection sound sensor is medium, the ventilation of the room portion 100e by the

air conditioners

50c and 50h is performed with medium wind. Further, since the

sound sensors

25a, 25b, 25f, and 25g are identified as sound sensors having long distances from the detection sound sensor, ventilation of the

air conditioners

50a, 50b, 50f, and 50g is performed with weak wind.

<Summary of Embodiment 2>
According to the air conditioning control device according to the second embodiment as described above, when the determination unit 26 determines that the audio information detected by the audio sensors 25a to 25j includes a human cough or sneeze, the determination unit 26 The ventilation of the room 100 by 50a to 50j is strengthened. According to such a configuration, it is possible to suppress the spread of a virus due to a person's cough or sneeze. Furthermore, when no one coughs or sneezes, the energy consumption of the air conditioner can be reduced.

<Modified example>
The control of ventilation of the room 100 by the air conditioners 50a to 50j when it is determined that the audio information detected by the audio sensors 25a to 25j includes a person's cough or sneeze is not limited to that shown in FIG. For example, ventilation by an air conditioner may be controlled in two stages or four or more stages instead of three stages, and each of the short distance, long distance, and medium distance in steps S24, S25, and S26 is shorter than in FIG. It can be long or long.

Further, the time for changing the wind force may be set arbitrarily, or Embodiment 1 and Embodiment 2 may be combined. For example, if the air volume of Embodiment 1 and Embodiment 2 is different for one air conditioner, the one air conditioner has the stronger air volume of Embodiment 1 and Embodiment 2. You can ventilate with the same amount of air.

<Embodiment 3>
FIG. 8 is a diagram showing an example of the arrangement of the air conditioning control device according to the third embodiment, and specifically is a plan view of the room 100. Hereinafter, among the components according to the third embodiment, the same or similar components as those described above will be given the same or similar reference numerals, and different components will be mainly explained.

The configuration of the air conditioning control device according to the third embodiment is similar to the configuration of the air conditioning control device according to the first embodiment, with an acquisition unit 27 added. The determination unit 26 and the acquisition unit 27 are communicably connected via at least one of wired and wireless communication.

The acquisition unit 27 acquires the congestion status of the room 100. In the following, the acquisition unit 27 will be described as an image analysis device that acquires the number of people in the room 100 as the congestion status by analyzing image data of the room 100. However, the acquisition unit 27 is not limited to this, and may be, for example, a communication device that receives the congestion situation when the ground equipment 3 in FIG. There may be.

The determination unit 26 controls the ventilation of the room 100 by the air conditioners 50a to 50j based on the audio information detected by the audio sensors 25a to 25j and the congestion situation acquired by the acquisition unit 27.

FIG. 9 is a diagram showing the configuration of an air conditioner 50a according to the third embodiment, and specifically is a sectional view of the room 100. The configuration of the air conditioner 50a will be described below, but the configurations of the air conditioners 50b to 50j are also similar.

The configuration of the air conditioner 50a in FIG. 9 is the same as the configuration of the air conditioner 50a in FIG. 2, with the addition of an exhaust air conditioner 502 that performs exhaust for ventilation. The exhaust air conditioner 502 is provided on the ceiling side of the vehicle 1. That is, the air conditioner 50a includes a plurality of exhaust air conditioners (exhaust air conditioners 502 to 504) that are installed at different heights and perform exhaust for ventilation.

Based on the audio information detected by the audio sensor 25a and the congestion situation acquired by the acquisition unit 27, the determination unit 26 selects an exhaust air conditioner from among the exhaust air conditioners 502 to 504 to perform exhaust.

<Operation>
FIG. 10 is a flowchart showing the operation of the air conditioning control device according to the third embodiment. The flowchart in FIG. 10 is similar to the flowchart in FIG. 3 with the addition of steps S31, S32, S33, and S34, so steps S31 to S34 will be mainly described below.

After it is determined in step S2 that there is a change in any of the volumes detected by the plurality of audio sensors 25a to 25j, the process proceeds to step S31.

In step S31, the determining unit 26 determines for each of the room portions 100a to 100j whether the congestion status acquired by the acquiring unit 27 is equal to or greater than a threshold value. For example, when the congestion situation indicates the number of people, the determination unit 26 determines whether the number of people is equal to or greater than a threshold value for each of the room sections 100a to 100j. The processes from step S32 onwards are performed for the parts of the room where the congestion situation is determined to be greater than or equal to the threshold, and the processes from step S3 onwards are performed for the parts of the room where the congestion situation is determined to be less than the threshold value.

In step S32, the determination unit 26 sets the air volume of the exhaust air from the exhaust air conditioner 502 installed on the ceiling side of the vehicle 1 in FIG. do.

In step S33, the determination unit 26 sets the exhaust air volume of the

exhaust air conditioners

503 and 504 in FIG. 9 to weak wind or off for the room portion where the congestion situation is determined to be equal to or higher than the threshold value.

Here, if the degree of congestion is high and the intake air volume of the intake air conditioner 501 in FIG. 9 is strong, there is a possibility that the virus will spread. Therefore, in step S34, the determination unit 26 sets the intake air volume of the intake air conditioner 501 in FIG. 9 to a weak wind for the room portion where the congestion situation is determined to be equal to or higher than the threshold value. After that, the operation of FIG. 10 ends.

In the example of FIG. 8, the person 10 having the conversation is marked with dot hatching. In this example, the volume of the conversation of the person 10 in the room part 100e is high, the volume of the conversation of the person 10 in the room part 100g is medium, and the other people 10 are not having a conversation. Further, the congestion situation in the

room portions

100d, 100e, 100i, and 100j is equal to or higher than the threshold value.

In this case, the operations of steps S32 to S34 are performed for the

room portions

100d, 100e, 100i, and 100j, and ventilation is performed on the ceiling side of the vehicle 1, that is, above the face of the person 10, as shown in FIG. Therefore, even if it is difficult for air to flow from the intake air conditioner 501 on the ceiling side to the

exhaust air conditioners

503 and 504 as shown by

arrows

80a and 80b due to crowding of people 10, it is possible to prevent the virus from being properly protected. Ventilation can be provided.

<Summary of Embodiment 3>
According to the air conditioning control device according to the third embodiment as described above, the determination unit 26, based on the audio information detected by the audio sensors 25a to 25j and the congestion situation acquired by the acquisition unit 27, Ventilation of the room 100 by the air conditioners 50a to 50j is controlled. According to such a configuration, when people are having a conversation, appropriate ventilation can be performed according to the crowdedness of the room 100.

<Modified example>
In the above description, the third embodiment is applied to the first embodiment, but the invention is not limited to this. The third embodiment may be applied to the second embodiment, or the third embodiment may be applied to the first embodiment. Embodiment 2 and Embodiment 3 may be applied.

Note that it is possible to freely combine each embodiment and each modification, or to modify or omit each embodiment and each modification as appropriate.

The above description is illustrative in all aspects and is not restrictive. It is understood that countless variations not illustrated may be envisioned.

1 Vehicle, 10 People, 25a-25j Audio sensor, 26 Judgment unit, 27 Acquisition unit, 50a-50j Air conditioner, 100 Room, 100a-100j Room part, 110 Conductor interface, 120 Driver interface, 150 Station staff interface , 160 Data storage unit, 501 Intake air conditioner, 502, 503, 504 Exhaust air conditioner.

Claims

An air conditioning control device that controls one or more air conditioners installed in a room,
a voice sensor that detects voice information that is voice information of a person in the room;
An air conditioning control device comprising: a control unit that controls ventilation of the room by the air conditioner based on the audio information detected by the audio sensor.
The air conditioning control device according to claim 1,
The audio information includes the volume of the audio,
The control unit is an air conditioning control device that controls the ventilation based on the volume detected by the audio sensor and one or more predetermined threshold values.
The air conditioning control device according to claim 2,
The one or more predetermined threshold values are a plurality of predetermined threshold values,
The control unit is an air conditioning control device that controls the ventilation in stages based on the volume detected by the audio sensor and the plurality of predetermined threshold values.
The air conditioning control device according to any one of claims 1 to 3,
The room and the air conditioning control device are provided in a vehicle,
The air conditioning control device transmits the audio information to a user interface provided in the vehicle or outside the vehicle,
The control unit is an air conditioning control device that controls the ventilation based on the audio information and operations on the user interface.
The air conditioning control device according to claim 4,
The air conditioning control device is capable of communicating with the user interface via at least one of wired and wireless communication.
The air conditioning control device according to claim 4 or 5,
An air conditioning control device, wherein the voice information detected by the voice sensor, vehicle information of the vehicle, mounting position information of the voice sensor, and detection time information of the voice information are stored in a data storage unit.
The air conditioning control device according to any one of claims 1 to 6,
The control unit is an air conditioning control device that increases the ventilation when it is determined that the audio information detected by the audio sensor includes coughing or sneezing of the person.
The air conditioning control device according to any one of claims 1 to 7,
further comprising an acquisition unit that acquires the congestion status of the room,
The control unit is an air conditioning control device that controls the ventilation based on the audio information and the congestion situation.
The air conditioning control device according to claim 8,
The air conditioner includes a plurality of exhaust air conditioners that are installed at different heights and perform exhaust for the ventilation,
The control unit is an air conditioning control device, wherein the control unit selects an exhaust air conditioner that performs the exhaust from the plurality of exhaust air conditioners based on the voice information and the congestion situation.
The air conditioning control device according to any one of claims 1 to 9,
The room includes a plurality of room parts obtained by dividing the room,
The one or more air conditioners are a plurality of air conditioners provided corresponding to the plurality of room parts,
The control unit is an air conditioning control device that controls ventilation of the plurality of room sections by the plurality of air conditioners based on the audio information detected in the plurality of room sections.
An air conditioning control device according to any one of claims 1 to 10,
An air conditioning system comprising the air conditioner.
An air conditioning control method for controlling one or more air conditioners installed in a room, the method comprising:
Detecting voice information that is voice information of a person in the room,
An air conditioning control method that controls ventilation of the room by the air conditioner based on the detected audio information.