TWI874945B - Control system - Google Patents

Abstract

A control system includes an air conditioning device (21) and a controller (12). The controller (12) includes a time determination unit (122), a number-of-persons estimation unit (123), a determination unit (124), and an operation control unit (125). The time determination unit (122) determines a time lag. The number-of-persons estimation unit (123) estimates the number of persons in a region at a time when the time lag has elapsed. The determination unit (124) determines whether to activate the air conditioning device (21) on the basis of the number of persons estimated by the number-of-persons estimation unit (123).

Description

Control system

The present invention relates to a control system.

PTL 1 discloses a system for air conditioning. The system disclosed in PTL 1 includes a device for obtaining the number of people on each floor. Outdoor air is introduced according to the number of people obtained by the device. Citation List Patent Literature

[PTL 1] JP H9-269262 A

[Technical issues]

The system disclosed in PTL 1 can control ventilation according to the number of people. In such a system, it is further expected to appropriately control air conditioning according to the state of the target area.

This disclosure is used to solve the above-mentioned problem. The purpose of this disclosure is to provide a control system that can realize appropriate air conditioning control according to the state of the target area. [Solution to the problem]

The control system disclosed herein includes an air conditioning device for delivering conditioned air to a specific area and a controller for controlling the air conditioning device. The controller includes: a time determination unit configured to determine the time delay from the start of the air conditioning device until the temperature of the area stabilizes at a target temperature based on current weather; a person number estimation unit configured to estimate the number of people in the area at a time point after the time delay determined by the time determination unit; a determination unit configured to determine whether to start the air conditioning device based on the number of people estimated by the person number estimation unit; and an action control unit configured to start the air conditioning device according to the determination result obtained by the determination unit.

The control system disclosed herein includes an air conditioning device for delivering conditioned air to a specific area and a controller for controlling the air conditioning device. The controller includes: a time determination unit configured to determine the time delay from the change of the parameter setting content for controlling the air conditioning device to the stabilization of the temperature of the area at the target temperature based on the current weather; a person number estimation unit configured to estimate the number of people in the area at the time point when the time delay determined by the time determination unit passes; a determination unit configured to determine whether to change the setting content based on the number of people estimated by the person number estimation unit; and an action control unit configured to change the setting content according to the determination result obtained by the determination unit.

The control system disclosed in the present invention includes an air conditioning device for delivering conditioned air to a specific area, a ventilation device for supplying outdoor air to the area and exhausting the air in the area to the outside, and a controller for controlling the air conditioning device. The controller includes: a first load determination unit configured to determine a first load based on the solar radiation amount in the area and the temperature difference between the inside and outside of the area; a second load determination unit configured to determine a first load based on the enthalpy difference between the inside and outside of the area and the air volume (air volume) to determine the second load; a third load determining unit is configured to determine the third load based on the heat generated by people in the area and the heat generated by equipment in the area; a determining unit is configured to determine parameter setting content for controlling the air-conditioning device based on the first load determined by the first load determining unit, the second load determined by the second load determining unit, and the third load determined by the third load determining unit; and an action control unit is configured to change the setting content according to the determination result obtained by the determining unit.

The control system disclosed in the present invention includes an air conditioning device for delivering conditioned air to a specific area and a controller for controlling the air conditioning device. The air conditioning device includes a ventilation device for introducing outdoor air into the area, a primary air conditioner for treating the outdoor air introduced by the ventilation device, and a secondary air conditioner for treating the outdoor air treated by the primary air conditioner and the air in the area. The controller includes: a mode determination unit configured to determine the operation mode of the primary air conditioner and the operation mode of the secondary air conditioner based on the first capacity required by the primary air conditioner and the second capacity required by the secondary air conditioner; a humidification/dehumidification determination unit configured to determine the humidification amount or dehumidification amount required for the area based on the first capacity and the second capacity; an allocation determination unit configured to determine the portion of the sum of the first capacity and the second capacity allocated to the primary air conditioner and the portion allocated to the secondary air conditioner based on the determination result obtained by the mode determination unit, the determination result obtained by the humidification/dehumidification determination unit, the first COP characteristic curve of the primary air conditioner, and the second COP characteristic curve of the secondary air conditioner; and an action control unit configured to control the air conditioning device according to the determination result obtained by the allocation determination unit. [Beneficial Effects of the Invention]

According to the control system disclosed herein, appropriate air conditioning control can be achieved according to the state of the target area.

In the following, a detailed description will be given with reference to the attached drawings. Redundant descriptions will be appropriately simplified or omitted. In each of the drawings, the same component symbols represent the same parts or corresponding parts.

First embodiment FIG. 1 is a diagram showing an example of a control system of the first embodiment. The control system shown in FIG. 1 includes a management action device 1, an air conditioning device 2, an elevator device 3, an environmental measurement device 4, and an electric power measurement device 5. The control system may also include other devices, such as lighting equipment.

The management action device 1 manages the devices included in the system in an integrated manner. The management action device 1 includes a display device 11 and a controller 12. In the example described in this embodiment, the control object of the controller 12 is the air conditioning device 2. The elevator device 3, the environment measurement device 4 and the power measurement device 5 are used as sensors to provide information to the controller 12. The controller 12 may also include a function of displaying necessary information on the display device 11.

The air conditioning device 2 includes an air conditioning device 21 and a ventilation device 22. The air conditioning device 21 and the ventilation device 22 are controlled by the controller 12.

The air conditioning device 21 is a device for delivering conditioned air to a specific area. Conditioned air is air whose temperature or humidity has been regulated at least. An area is a specific floor of a building. In the following description, the area is represented as area A. The floor where area A is located is represented as floor B. The building containing area A is represented as building C. The number of people in area A is represented as number of people D. Area A can be part of or all of floor B. In the following description, it is assumed that area A is all of floor B.

The ventilation device 22 is a device for supplying air from outside the building C to the area A and exhausting the air in the area A to the outside of the area A (preferably to the outside of the building C). The ventilation device 22 introduces air from outside the building C, that is, introduces outdoor air. For example, the outdoor air introduced by the ventilation device 22 is directly supplied to the area A. The ventilation device 22 can be one of the functions of the air conditioning device 21. In this case, the outdoor air introduced by the ventilation device 22 can be supplied to the area A after the temperature or humidity is adjusted by the air conditioning device 21. The outdoor air introduced by the ventilation device 22 can be directly supplied to the area A.

The elevator device 3 is a device for carrying passengers to each floor of the building C. Therefore, the elevator device 3 can also carry passengers to the floor B. FIG1 shows an example of the elevator device 3 including a plurality of elevator devices. In this case, the elevator device 3 includes a communication device 31 and a group control panel 32 in addition to the plurality of elevator devices.

The communication device 31 is a device for enabling the elevator device 3 to communicate with other devices including the management motion device 1. The group control panel 32 controls a plurality of elevator devices. Each elevator device includes a control panel 33, a traction machine 34, and a car 35. The car 35 moves up and down in the shaft. The traction machine 34 drives the car 35. The control panel 33 controls the traction machine 34.

The environment measurement device 4 includes an input/output device 41 and various measurement devices. The input/output device 41 performs processing for inputting and outputting information. FIG1 shows that the environment measurement device 4 includes a pyranometer 42, an outdoor thermo-hygrometer 43, an indoor thermo-hygrometer 44, and a CO ₂ densitometer 45 as examples of measurement devices for measuring environmental information. The environment measurement device 4 may include other measurement devices.

The all-sky radiometer 42 measures the amount of solar radiation in area A. "The amount of solar radiation in area A" also includes the amount of solar radiation that does not actually reach area A. For example, the all-sky radiometer 42 is installed on the roof floor of building C. The all-sky radiometer 42 can be installed at the site of building C. The thermometer and hygrometer 43 measures the temperature and humidity outside building C. The thermometer and hygrometer 43 may include a thermometer and a hygrometer, which are independent measuring devices. The thermometer and hygrometer 44 measures the temperature and humidity in area A. The thermometer and hygrometer 44 may include a thermometer and a hygrometer, which are independent measuring devices. The _CO2 concentration meter 45 measures the carbon dioxide concentration in area A.

In this embodiment, "outdoors" also means "outside of building C". In contrast to "outdoors", "indoors" also means "inside area A". Air from outside building C is also expressed as "outdoor air". In addition, the inside of building C (area A) and the outside of building C are also expressed as "inside and outside".

The power measuring device 5 includes a measuring device 51, a lighting panel 52, a distribution panel 53, and a solar generator 54. The measuring device 51 measures the power consumption of the equipment provided in the area A based on the information from the lighting panel 52, the distribution panel 53, and the solar generator 54.

Next, the unique control that can be performed by this control system is explained. This control system executes the first to fifth controls described below. First control: air conditioning start control according to the number of people D. Second control: air conditioning change control according to the number of people D. Third control: air conditioning change control according to the load. Fourth control: ventilation control according to the number of people D. Fifth control: efficiency optimization control.

[First control] FIG. 2 is a diagram showing the functions of the control system required for performing the first control. The controller 12 includes a storage unit 120, a weather estimation unit 121, a time determination unit 122, a number of people estimation unit 123, a determination unit 124, and an action control unit 125.

Fig. 3 is a flowchart showing an exemplary operation of the control system. Fig. 3 shows an example of the control system performing the first control. As an example, the first control starts in the morning when the air conditioning device 21 stops. That is, when the first control starts, conditioned air is not supplied from the air conditioning device 21 to the area A.

The weather estimation unit 121 estimates the weather. First, the weather estimation unit 121 obtains the measured value of the current solar radiation measured by the all-sky radiometer 42 (S101). The weather estimation unit 121 obtains the measured value of the current temperature and the measured value of the current humidity measured by the thermometer hygrometer 43 (S102). The weather estimation unit 121 obtains information about the current time from the clock 150 included in the controller 12 (S103). The weather estimation unit 121 may obtain information about the current time from another device.

The weather estimation unit 121 estimates the current weather based on the current solar radiation measured by the all-sky radiometer 42, the current temperature and humidity measured by the thermohygrometer 43, and the current time (S104). For example, a table T1 for estimating weather is stored in the storage unit 120. Table 1 is an example of table T1.

[Form 1] weather sunny Cloudy rain time 6:00- 6:59 7:00- 7:59 8:00- 8:59 6:00- 6:59 7:00- 7:59 8:00- 8:59 6:00- 6:59 7:00- 7:59 8:00- 8:59 Solar radiation (MJ/m ² ) 0.10 0.50 0.80 - - - 0.05 0.20 0.30 temperature 27℃ 28℃ 29℃ - - - 25℃ 26℃ 27℃ Humidity 85% 80% 75% - - - 90% 90% 90%

Table 1 shows an example of how the weather can be determined based on time, solar radiation, outdoor temperature, and outdoor humidity. Consider a case where the weather estimation unit 121 estimates the weather with reference to Table T1. In this case, if the solar radiation at 7:30 is 0.55 [MJ/m ² ], the temperature is 29°C, and the humidity is 75%, the weather estimation unit 121 determines that the weather is currently sunny. If the respective measured values of solar radiation, temperature, and humidity do not apply to both sunny and rainy days, the weather estimation unit 121 determines that the weather is currently cloudy.

The method by which the weather estimation unit 121 estimates the weather is not limited to the above examples. For example, the weather estimation unit 121 may estimate the current weather based only on the current solar radiation. The weather estimation unit 121 may estimate the current weather based only on the current solar radiation and the current outdoor temperature. The weather estimation unit 121 may estimate the current weather based on the current solar radiation and other environmental information.

The time determination unit 122 determines the time lag of the current time (S105). The time lag in the first control means the time interval from the start of the air-conditioning device 21 until the temperature of the area A is stabilized at the target temperature.

The time determination unit 122 first obtains information on the weather estimated by the weather estimation unit 121. Furthermore, the time determination unit 122 obtains information on the current time from the clock 150. The weather estimation unit 121 may obtain information on the current time from another device.

In S105, the time determination section 122 determines the time lag based on the current weather estimated by the weather estimation section 121 and the current time. For example, a table T2 for determining the time lag is stored in the storage section 120. Table 2 is an example of the table T2.

[Form 2] weather sunny Cloudy rain time 7:00- 7:29 7:30- 7:59 8:00- 8:29 7:00- 7:29 7:30- 7:59 8:00- 8:29 7:00- 7:29 7:30- 7:59 8:00- 8:29 Time delay (minutes) 30 45 60 25 40 50 20 30 40

Table 2 shows an example of how the time delay can be determined based on the weather and time. Consider a case where the time determination unit 122 determines the time delay based on Table T2. In such a case, when the current time is 7:15 and the weather is sunny, the time determination unit 122 determines the time delay of the current time to be 30 minutes. When the current time is 8:10 and the weather is rainy, the time determination unit 122 determines the time delay of the current time to be 40 minutes.

The method by which the time determination unit 122 determines the time delay is not limited to the above example. For example, the time determination unit 122 may determine the time delay based only on the current weather. The time determination unit 122 may determine the time delay based on the current weather, the current time, and the current season.

The number of people estimating unit 123 estimates the number of people D at a time point after the time delay determined by the time determining unit 122 has passed. That is, if the time delay is determined to be 30 minutes in S105, the number of people estimating unit 123 estimates the number of people D when 30 minutes have passed from the current time. In the following description, the case where the number of people estimating unit 123 obtains information required for estimating the number of people D from the elevator equipment 3 will be described as an example.

In the example shown in FIG2 , the elevator system 3 further includes a person number management device 36. The person number management device 36 includes a storage unit 360, a detection unit 361, a calculation unit 362, and a learning unit 363. In addition, the car 35 includes a weighing device 37. The weighing device 37 measures the load of the car 35.

The detection unit 361 detects the load variation measured by the weighing device 37. The calculation unit 362 calculates the number of people entering and leaving the carriage 35 on each floor based on the load variation detected by the detection unit 361. In addition, the calculation unit 362 calculates the number of people on each floor. The calculation unit 362 calculates the actual value of the number of people on floor B at the current time, that is, the actual value of the number of people D at the current time.

As described above, the calculation unit 362 calculates the number of people on each floor in real time. Based on the calculation results obtained by the calculation unit 362, the learning unit 363 classifies the number of people on each floor under any conditions and establishes a database. The learning method of the learning unit 363 can be any method. The database established by the learning unit 363 is stored in the storage unit 360. The established database is updated regularly. Therefore, even if work is restricted due to, for example, an epidemic, the impact of the restriction will be reflected in the database after a certain period of time.

As an example, the database is configured so that by specifying a specific time, an estimated value of the number of people D at that time can be determined. As another example, the database is configured so that by specifying a specific day of a specific week and a specific time, an estimated value of the number of people D at that day of the week and that time can be determined.

First, the person-count estimation unit 123 obtains the measured value N1 of the number of people D at the current time from the calculation unit 362 (S106). The person-count estimation unit 123 obtains the estimated value N2 of the number of people D at the current time from the storage unit 360 (S107). The person-count estimation unit 123 obtains the estimated value N3 of the number of people D at a time point after the time delay determined by the time determination unit 122 from the current time from the storage unit 360 (S108).

The person number estimation unit 123 estimates the number of people D at a time point that has passed the time delay determined by the time determination unit 122 from the current time based on the measured value N1, the estimated value N2, and the estimated value N3 (S109). As an example, the person number estimation unit 123 calculates a correction coefficient using the measured value N1 and the estimated value N2. The correction coefficient may be calculated based on the difference between the measured value N1 and the estimated value N2. In S109, the person number estimation unit 123 estimates the number of people D by correcting the estimated value N3 using the calculated correction coefficient.

The method by which the person number estimation unit 123 estimates the number of people D is not limited to the above example. For example, the person number estimation unit 123 may estimate the number of people D only based on the estimated value N3.

The person number estimation unit 123 may also obtain information required for estimating the number of people D from equipment other than the elevator equipment 3. For example, if the building C includes a passage management device, the person number estimation unit 123 may obtain necessary information from the passage management device. The passage management device includes a card reader or any other verification device. As another example, if a plurality of cameras are installed in the building C, the person number estimation unit 123 may obtain necessary information from images taken by these cameras.

The determination unit 124 determines whether to activate the air conditioning device 21 based on the number of people D estimated by the number of people estimation unit 123. For example, the determination unit 124 determines whether the number of people D estimated by the number of people estimation unit 123 is greater than the reference value Dth1 (S110). The reference value Dth1 is set in advance. It is desirable to set the reference value Dth1 according to the environment of the building C, etc. As an example, the number of people corresponding to 50% of the number of people who have their own seats in the area A is set as the reference value Dth1.

The action control unit 125 activates the air conditioning device 21 according to the determination result obtained by the determination unit 124. For example, if the number of people D estimated by the number of people estimation unit 123 is greater than the reference value Dth1, the determination unit 124 determines as yes in S110. When the determination result in S110 is yes, the action control unit 125 activates the air conditioning device 21 (S111). In S111, the action control unit 125 may activate both the air conditioning device 21 and the ventilation device 22. When the air conditioning device 21 is activated in S111, the action control unit 125 starts control for bringing the temperature of the area A close to the target temperature and then stabilizing the temperature of the area A at the target temperature.

On the other hand, if the number of people D estimated by the number of people estimating unit 123 is not greater than the reference value Dth1, the determining unit 124 determines to be negative in S110. When the determination result in S110 is negative, the action control unit 125 does not start the air conditioning device 21. The action control unit 125 stops the air conditioning device 21. When the determination result in S110 is negative, the processing returns to S101. The sequential processing from S101 to S110 is repeatedly executed until the determination result in S110 becomes positive.

In the first control, if the number of people D estimated by the number of people estimating unit 123 is greater than the reference value Dth1, the determining unit 124 determines to activate the air conditioning device 21. The number of people D estimated by the number of people estimating unit 123 is the number of people at a time point after the time delay determined by the time determining unit 122. Therefore, the control system can start the air conditioning device 21 in advance according to the time delay before a large number of people gather in the area A. That is, the control system can realize appropriate air conditioning control according to the state of the area A.

Next, an example of pre-processing for establishing a time delay database will be described with reference to FIG. 4 and FIG. 5 .

Fig. 4 is a diagram showing the functions of the control system required to establish a time delay database. In the example shown in Fig. 4, the controller 12 includes a storage unit 120, a weather estimation unit 121, a determination unit 126, a detection unit 127, and an establishment unit 128. Fig. 5 is a flowchart showing an exemplary operation of the control system.

The controller 12 determines whether the air conditioning device 21 is activated (S201). When the air conditioning device 21 is activated, an activation signal is sent from the air conditioning device 21 to the controller 12. When the controller 12 receives the activation signal from the air conditioning device 21, it determines yes in S201.

The detection unit 127 detects the time interval from when the air-conditioning device 21 is activated until the temperature of the area A is stabilized at the target temperature, that is, the time lag in the first control. When the determination result in S201 is yes, the detection unit 127 starts counting (S202).

When the timing is started in S202, the determination unit 126 obtains information about the target temperature from the air-conditioning device 21 (S203). For example, the target temperature is set by the user. In addition, the determination unit 126 obtains the measured value of the current temperature measured by the thermometer 44 (S204). In the case where the air-conditioning device 21 has a function of detecting the intake air temperature, the determination unit 126 can obtain the measured value of the indoor temperature from the air-conditioning device 21. Similarly, in other controls, the controller 12 can obtain the measured value of the indoor temperature (the temperature of the area A) from the air-conditioning device 21.

The determination unit 126 determines whether the temperature of the area A is stable at the target temperature based on the target temperature set in the air conditioning device 21 and the indoor temperature measured by the thermo-hygrometer 44 (S205). As an example, when the difference between the target temperature and the indoor temperature is within 0.2°C and this state continues for 10 minutes, the determination unit 126 determines yes in S205. As another example, the determination in S205 can be performed by further using the target humidity set in the air conditioning device 21 and the indoor humidity measured by the thermo-hygrometer 44.

The determination section 126 repeatedly executes the processing of S204 and S205 until the determination result in S205 becomes yes.

When the determination result in S205 is yes, the detection unit 127 stops the timing (S206). The detection unit 127 detects the time interval from the start of the timing in S202 to the termination of the timing in S206 as the time delay.

The weather estimation unit 121 estimates the current weather based on the current solar radiation (S207). For example, similar to the examples shown in FIG. 2 and FIG. 3, the weather estimation unit 121 estimates the current weather based on the current solar radiation measured by the all-sky radiometer 42, the current temperature and humidity measured by the thermohygrometer 43, and the current time. In this case, the processing performed by the weather estimation unit 121 is similar to the processing from S101 to S104 in FIG. 3.

The establishing unit 128 establishes a time delay database (S208). For example, the establishing unit 128 obtains information about the time delay and information about the start-up time of the air-conditioning device 21 from the detection unit 127. The establishing unit 128 obtains information about the current weather from the weather estimation unit 121. The establishing unit 128 obtains the correlation between the time delay, the start-up time and the weather, and constructs a database as shown in Table T2. The database established by the establishing unit 128 is stored in the storage unit 120. The establishing unit 128 can establish a mathematical formula with similar functions instead of a database.

[Second control] Next, the second control will be described with reference to FIG. 2 and FIG. 6. FIG. 6 is a flowchart showing an exemplary operation of the control system. FIG. 6 shows an example of the control system executing the second control. As an example, the second control starts before the lunch break, during which the number of people D changes significantly. When the second control starts, the air conditioning device 21 is already in operation.

The processing of S301 to S309 in FIG6 is similar to the processing of S101 to S109 in FIG3. For example, in S304, the weather estimation unit 121 estimates the current weather based on the current solar radiation measured by the all-sky radiometer 42, the current temperature and humidity measured by the thermohygrometer 43, and the current time. The weather estimation unit 121 can estimate the weather with reference to the table T1.

In S305, the time determination unit 122 determines the time hysteresis of the current time based on the current weather estimated by the weather estimation unit 121 and the current time. The time hysteresis used in the second control is different from the time hysteresis used in the first control. The time hysteresis in the second control represents the time interval from when the parameter setting content for controlling the air conditioning device 21 is changed until the temperature of the area A is stabilized at the target temperature.

Table 3 shows examples of parameter settings and time delays.

[Form 3] At the beginning At the end weather sunny Cloudy rain sunny Cloudy rain Time delay (minutes) 20 15 10 10 15 20 Target temperature 24℃ 25℃ 26℃ 22℃ 23℃ 24℃ Air volume weak weak weak Strong Strong Strong Wind direction Down Down Down superior superior superior

In S309, the person number estimation unit 123 estimates the number of people D at a time point that is delayed from the current time by the time determined by the time determination unit 122. As an example, the number of people D is estimated based on the measured value N1, the estimated value N2, and the estimated value N3.

Next, the determination unit 124 determines whether to change the parameter setting content for controlling the air conditioning device 21 based on the number of people D estimated by the number of people estimation unit 123 (S310). The conditions for changing the parameter (control parameter) setting content are preset. In the following description, the conditions may be referred to as change conditions. That is, in S310, the determination unit 124 determines whether the change conditions are met.

As an example, in S310, the determination unit 124 determines whether the number of people D estimated by the number of people estimation unit 123 is less than the reference value Dth2. The reference value Dth2 is set in advance. It is desirable to set the reference value Dth2 according to the environment of the building C, etc. As an example, the number of people corresponding to 10% of the number of people who have their own seats in the area A is set as the reference value Dth2.

The action control unit 125 changes the control parameter setting content of the air conditioning device 21 according to the determination result obtained by the determination unit 124. For example, if the number of people D estimated by the number of people estimation unit 123 is less than the reference value Dth2, the change condition is satisfied. Therefore, it is determined to be yes in S310. When the determination result in S310 is yes, the action control unit 125 changes the control parameter setting content of the air conditioning device 21 (S311). Therefore, the control based on the premise that the number of people in area A will decrease from now on is started.

Table 4 shows an example of the control parameter setting content when it is determined to be yes in S310 because the number of people D is less than the reference value Dth2. In S311, the control parameter setting content is changed from the specific first content to the second content of Table 4.

[Form 4] weather sunny Cloudy rain Target temperature +2℃ +3℃ +4℃ Air volume weak weak weak Wind direction Down Down Down Dehumidification - - -

If the number of people D estimated by the number of people estimating unit 123 is not less than the reference value Dth2, the change condition is not satisfied. Therefore, it is determined to be no in S310. When the determination result in S310 is no, the action control unit 125 does not change the control parameter setting content of the air-conditioning device 21. When the determination result in S310 is no, the processing returns to S301. The sequential processing from S301 to S310 is repeatedly executed until the determination result in S310 becomes yes.

As another example, after the control parameter setting content is changed from the first content to the second content, the process of FIG6 can be performed again by changing the change condition. In this case, from S301 to S309, a process similar to the process from S101 to S109 in FIG3 is performed.

For example, in S310, the determination unit 124 determines whether the number of people D estimated by the number of people estimation unit 123 is greater than the reference value Dth3. The reference value Dth3 is preset. It is expected that the reference value Dth3 is greater than the reference value Dth2. The reference value Dth3 may be the same as the reference value Dth1. It is expected that the reference value Dth3 is set according to the environment of the building C, etc. As an example, the number of people corresponding to 50% of the number of people who have their own seats in the area A is set as the reference value Dth3.

If the number of people D estimated by the number of people estimating unit 123 is greater than the reference value Dth3, the change condition is satisfied. Therefore, it is determined to be yes in S310. After the control parameter setting content is changed to the second content, when the determination result in S310 is yes, the action control unit 125 changes the control parameter setting content of the air-conditioning device 21 (S311). Therefore, control based on the premise that the number of people in area A will increase from now on is started.

Table 5 is an example of the control parameter setting content when it is determined to be yes in S310 because the number of people D is greater than the reference value Dth3. In S311, the control parameter setting content is changed from the second content shown in Table 4 to the first content shown in Table 5.

[Form 5] weather sunny Cloudy rain Target temperature Undo (±0) Air volume Automatic Automatic Automatic Wind direction superior superior superior Dehumidification - - -

If the number of people D estimated by the number of people estimating unit 123 is not greater than the reference value Dth3, the change condition is not satisfied. Therefore, it is determined to be negative in S310. When the determination result in S310 is negative, the action control unit 125 does not change the control parameter setting content of the air conditioning device 21. The action control unit 125 controls the air conditioning device 21 and at the same time keeps the control parameter setting content as the second content.

In the second control, if the number of people D estimated by the person estimation unit 123 is less than the reference value Dth2, control based on the premise that the number of people in area A is decreasing from now on is started. Then, when the number of people D estimated by the person estimation unit 123 becomes greater than the reference value Dth3, control based on the premise that the number of people in area A is increasing from now on is started. Therefore, the control system can change the control content of the air-conditioning device 21 in advance before people leave area A and before people gather in area A. That is, the control system can realize appropriate air-conditioning control according to the state of area A.

[Third control] FIG. 7 is a diagram showing the functions of the control system required for performing the third control. In the example shown in FIG. 7 , the controller 12 includes a storage unit 120, a load determination unit 129, a load determination unit 130, a load determination unit 131, a determination unit 124, and an action control unit 125.

The load determination unit 129 determines a first load. The first load is an indoor intrusion load based on the solar radiation amount in the area A and the temperature difference between the inside and the outside of the area A. The load determination unit 129 includes a weather estimation unit 121, a solar radiation estimation unit 132, a load calculation unit 133, a load calculation unit 134, and a load calculation unit 135.

The load determination unit 130 determines a second load. The second load is an outdoor air load based on the enthalpy difference between the inside and the outside of the area A and the air volume of the ventilation device 22. The load determination unit 130 includes an estimation unit 136 and a load calculation unit 137.

The load determination unit 131 determines a third load. The third load is an internal heat generation load based on the heat generated by people in the area A and the heat generated by equipment in the area A. The load determination unit 131 includes a heat estimation unit 138 , a heat estimation unit 139 , and a load calculation unit 140 .

FIG8 is a flowchart showing an exemplary operation of the control system. FIG8 shows an example of the control system performing the third control. As an example, the third control starts when a specific start condition is met. The start condition is preset. The start condition will be described below.

First, the load determination unit 129 determines a first load (S401). Fig. 9 is a flowchart showing an example of determination of the first load. Fig. 9 shows an exemplary operation performed by the load determination unit 129 in S401.

The weather estimation unit 121 estimates the current weather. The processing of S501 to S504 in FIG. 9 is similar to the processing of S101 to S104 in FIG. 3. For example, in S504, the weather estimation unit 121 estimates the current weather based on the current solar radiation measured by the all-sky radiometer 42, the current temperature and humidity measured by the thermohygrometer 43, and the current time. The weather estimation unit 121 can estimate the weather with reference to the table T1.

The solar radiation estimation unit 132 estimates the solar radiation amount in each direction (S505). The solar radiation estimation unit 132 estimates the solar radiation amount in each direction based on the current weather estimated by the weather estimation unit 121 and the current time. For example, a table T3 for estimating the solar radiation amount in each direction is stored in the storage unit 120. Table 6 shows a part of Table T3. Table 6 is a table for estimating the solar radiation amount of a wall facing east.

[Form 6] Wall direction: East weather sunny time 6:00- 6:59 7:00- 7:59 8:00- 8:59 9:00- 9:59 10:00- 10:59 11:00- 11:59 12:00- 12:59 13:00- 13:59 14:00- 14:59 Solar radiation (MJ/m ² ) 2.00 1.80 1.50 1.2 0.9 0.6 0.3 0.3 0.3 weather Cloudy rain time 6:00- 6:59 7:00- 7:59 8:00- 8:59 9:00- 9:59 10:00- 10:59 11:00- 11:59 12:00- 12:59 13:00- 13:59 14:00- 14:59 Solar radiation (MJ/m ² ) 1.00 0.90 0.75 0.6 0.45 0.3 0.15 0.15 0.15 0.1

Table 7 shows a portion of Table T3. Table 7 is a table for estimating the solar radiation amount of a wall facing west. Table T3 includes a table for facing north and a table for facing south.

[Form 7] Wall direction: West weather sunny time 11:00- 11:59 12:00- 12:59 13:00- 13:59 14:00- 14:59 15:00- 15:59 16:00- 16:59 17:00- 17:59 18:00- 18:59 19:00- 19:59 Solar radiation (MJ/m ² ) 0.3 0.3 0.6 0.9 1.2 1.5 1.8 1.0 0 weather Cloudy rain time 11:00- 11:59 12:00- 12:59 13:00- 13:59 14:00- 14:59 15:00- 15:59 16:00- 16:59 17:00- 17:59 18:00- 18:59 19:00- 19:59 Solar radiation (MJ/m ² ) 0.15 0.15 0.3 0.45 0.6 0.75 0.9 0.5 0 0.1

Table 6 shows an example in which the solar radiation amount of a wall facing east can be identified according to weather and time. Consider a case in which the solar radiation estimating section 132 estimates the solar radiation amount in each direction based on Table T3. In such a case, the solar radiation amount in the direction "east" is estimated to be 0.3 [MJ/m ² ] at 12:30 on a sunny day. The method by which the solar radiation estimating section 132 estimates the solar radiation amount in each direction is not limited to the above example. For example, when estimating the solar radiation amount in each direction, a correction coefficient according to the season may be used.

The load calculation unit 133 calculates the indoor intrusion load caused by solar radiation (S506). For example, the load calculation unit 133 calculates the indoor intrusion load caused by solar radiation in each direction based on the solar radiation amount in each direction estimated by the solar radiation estimation unit 132, the solar radiation acquisition rate of the wall, and the solar radiation acquisition rate of the window. In S506, the load calculation unit 133 adds the calculated loads in each direction to calculate the overall load of the area A.

The load calculation unit 134 calculates the indoor intrusion load caused by the temperature difference between the inside and the outside (S507). For example, the load calculation unit 134 calculates the temperature difference between the inside and the outside based on the current temperature measured by the thermo-hygrometer 43 and the current temperature measured by the thermo-hygrometer 44. The load calculation unit 134 calculates the indoor intrusion load caused by the temperature difference based on the calculated temperature difference, the heat transfer coefficient of the wall, and the heat transfer coefficient of the window.

The load calculation unit 135 calculates a first load (S508). The load calculation unit 135 calculates the first load based on the load calculated by the load calculation unit 133 and the load calculated by the load calculation unit 134. For example, the first load is the sum of the indoor intrusion load caused by solar radiation and the indoor intrusion load caused by the temperature difference between the inside and the outside.

The load determination unit 130 determines the second load (S402). Fig. 10 is a flowchart showing an example of determination of the second load. Fig. 10 shows an exemplary operation performed by the load determination unit 130 in S402.

The estimating unit 136 estimates the enthalpy difference between the inside and the outside. First, the estimating unit 136 obtains the actual value of the current temperature and the actual value of the humidity measured by the thermohygrometer 43 (S601). The estimating unit 136 obtains the actual value of the current temperature and the actual value of the humidity measured by the thermohygrometer 44 (S602). The estimating unit 136 estimates the enthalpy difference between the inside and the outside based on the current temperature and humidity measured by the thermohygrometer 43 and the current temperature and humidity measured by the thermohygrometer 44 (S603).

Load calculation unit 137 calculates the second load. Load calculation unit 137 obtains information on the current air volume from ventilation device 22 (S604). Load calculation unit 137 calculates the second load based on the enthalpy difference estimated by estimation unit 136 and the air volume of ventilation device 22 (S605).

The load determination unit 131 determines the third load (S403). Fig. 11 is a flowchart showing an example of determination of the third load. Fig. 11 shows an exemplary operation performed by the load determination unit 131 in S403.

The heat estimation unit 138 estimates the heat Q1 generated by the people in the area A. First, the heat estimation unit 138 obtains information about the number of people in the area A, that is, the number of people D (S701). For example, the heat estimation unit 138 obtains the information from the elevator device 3. In S701, the heat estimation unit 138 can obtain the measured value N1 of the number of people D at the current time from the calculation unit 362. In S701, the heat estimation unit 138 can obtain the estimated value N2 of the number of people D at the current time from the storage unit 360.

Next, the calorie estimation unit 138 estimates the calorie Q1 by multiplying the calorie production of each person by the number of people D (S702). The calorie production of each person is preset.

The heat estimation unit 139 estimates the heat Q2 generated by the equipment in the area A. For example, the heat estimation unit 139 obtains information on power consumption in the area A from the measuring device 51 (S703). The heat estimation unit 139 estimates the heat Q2 based on the power consumption measured by the measuring device 51 (S704).

The load calculation unit 140 calculates the third load (S705). The load calculation unit 140 calculates the third load based on the heat amount Q1 estimated by the heat amount estimation unit 138 and the heat amount Q2 estimated by the heat amount estimation unit 139.

Next, the determination unit 124 performs a process for determining the control parameter setting content of the air conditioning device 21 (S404). In the following description, the process performed by the determination unit 124 may be referred to as a determination process. The determination process is performed based on the first load determined by the load determination unit 129, the second load determined by the load determination unit 130, and the third load determined by the load determination unit 131. The action control unit 125 changes the control parameter setting content of the air conditioning device 21 according to the determination result obtained by the determination unit 124 (S405).

As described above, the third control shown in FIG. 8 starts when the start condition is satisfied. That is, when the start condition is satisfied, determination processing is performed by the determination unit 124. For example, the determination unit 124 calculates the change amount △H1 of the indoor enthalpy within a specific first time. The determination unit 124 determines whether the calculated change amount △H1 is equal to or greater than a reference value △Hth1. The reference value △Hth1 is preset. The desired reference value △Hth1 is set according to the environment of the building C, etc. As an example, the reference value △Hth1 is 1.5%.

In addition, the determination unit 124 calculates the change amount ΔH2 of the outdoor enthalpy within the first time. The determination unit 124 determines whether the calculated change amount ΔH2 is equal to or greater than a reference value ΔHth2. The reference value ΔHth2 is preset. The desired reference value ΔHth2 is set according to the environment of the building C, etc. As an example, the reference value ΔHth2 is 5%.

For example, if the calculated change amount ΔH1 is equal to or greater than the reference value ΔHth1, the determination unit 124 determines that the start condition is satisfied. If the calculated change amount ΔH2 is equal to or greater than the reference value ΔHth2, the determination unit 124 determines that the start condition is satisfied. That is, if the change amount ΔH1 is equal to or greater than the reference value ΔHth1, the determination unit 124 starts the determination process even if the change amount ΔH2 is less than the reference value ΔHth2. If the change amount ΔH2 is equal to or greater than the reference value ΔHth2, the determination unit 124 starts the determination process even if the change amount ΔH1 is less than the reference value ΔHth1.

In the determination process, the determination unit 124 calculates the required cold energy from the difference between the current supply amount of cold energy and the first load, the second load, and the third load. The determination unit 124 sets the target temperature, air volume, and wind direction of the air conditioning device 21 based on the calculated cold energy. For example, the action control unit 125 changes the control parameter setting content from the first content shown in Table 5 to the second content shown in Table 4 according to the determination result obtained by the determination unit 124.

After the start condition is satisfied, the determination unit 124 determines whether a specific termination condition is satisfied (S406). The termination condition is a condition for terminating the determination process of the determination unit 124. The termination process is preset. If the termination condition is not satisfied, the processes of S401 to S405 are repeatedly executed.

For example, if the change amount ΔH1 is less than the reference value ΔHth1 and the change amount ΔH2 is less than the reference value ΔHth2, the determination unit 124 determines that the termination condition is satisfied. Therefore, it is determined to be yes in S406. If the change amount ΔH2 is equal to or greater than the reference value ΔHth2, the termination condition is not satisfied even if the change amount ΔH1 is less than the reference value ΔHth1. If the change amount ΔH1 is equal to or greater than the reference value ΔHth1, the termination condition is not satisfied even if the change amount ΔH2 is less than the reference value ΔHth2.

When the determination result of S406 is yes, the determination processing of the determination unit 124 is terminated. In addition, when the determination result in S406 is yes, the action control unit 125 cancels the control parameter setting content (S407). Therefore, the setting content is changed from the second content shown in Table 4 to the first content shown in Table 5.

In the third control, when the start condition is satisfied, the determination process of the determination unit 124 is started. The determination process is performed based on the first load, the second load, and the third load. Therefore, the control system can appropriately determine the control parameter setting content according to the first load, the second load, and the third load. That is, the control system can achieve appropriate air conditioning control according to the state of area A.

Next, an exemplary pre-processing for establishing a database of solar radiation amounts in various directions will be described with reference to FIG. 12 .

Fig. 12 is a diagram showing the functions of the control system required to create a database of solar radiation. In the example shown in Fig. 12, the controller 12 includes a storage unit 120, a weather estimation unit 121, and a creation unit 128.

The weather estimation unit 121 estimates the current weather based on the current solar radiation. For example, similar to the examples shown in FIG. 2 and FIG. 3 , the weather estimation unit 121 estimates the current weather based on the current solar radiation measured by the all-sky radiometer 42, the current temperature and humidity measured by the thermohygrometer 43, and the current time. In this case, the processing performed by the weather estimation unit 121 is similar to the processing from S101 to S104 in FIG. 3 .

The establishment unit 128 establishes a database of solar radiation in each direction. For example, the establishment unit 128 obtains information about the current weather and information about the current time from the weather estimation unit 121. The establishment unit 128 obtains the measured value of the current solar radiation measured by the all-sky radiometer 42. The solar radiation measured by the all-sky radiometer 42 is a measured value on the horizontal plane. The establishment unit 128 decomposes the solar radiation measured by the all-sky radiometer 42 for each direction, and obtains the solar radiation in each direction. The establishment unit 128 obtains the correlation between time, weather and solar radiation to construct a database as shown in Table T3. The database established by the establishment unit 128 is stored in the storage unit 120. The creation unit 128 may create a mathematical formula having a similar function instead of a database.

FIG. 7 shows a function of performing an air conditioning change control according to the current load. Hereinafter, an exemplary air conditioning change control according to the load after a fixed time has passed from the current time will be described. In the following description, an example in which the fixed time is X minutes will be described. The value of X can be set arbitrarily. The value of X can adopt the time delay in the second control.

7 , the controller 12 includes the storage section 120, the load determination section 129, the load determination section 130, the load determination section 131, the determination section 124, and the motion control section 125. However, in this example, the functions of the load determination sections 129 to 131 are different from the above functions.

FIG13 is a diagram showing an example of the load determination unit 129. The load determination unit 129 determines the first load at a time point when X minutes have passed from the current time. In the example shown in FIG13, the load determination unit 129 includes an estimation unit 141 in addition to the weather estimation unit 121, the solar radiation estimation unit 132, the load calculation unit 133, the load calculation unit 134, and the load calculation unit 135.

In order for the load determination unit 129 to determine the first load after X minutes, the solar radiation after X minutes, the outdoor temperature after X minutes, and the outdoor humidity after X minutes need to be input to the weather estimation unit 121. The outdoor temperature after X minutes and the indoor temperature after X minutes need to be input to the load calculation unit 134. The weather estimation unit 121 and the solar radiation estimation unit 132 can specifically specify the time after X minutes based on the current time of the clock 150.

FIG14 is a flowchart showing an exemplary operation of the estimation unit 141. The estimation unit 141 estimates the solar radiation after X minutes, the outdoor temperature after X minutes, and the outdoor humidity after X minutes. For example, the estimation unit 141 obtains the actual value of the current solar radiation measured by the all-sky radiometer 42. The estimation unit 141 obtains the actual value of the current outdoor temperature and the actual value of the outdoor humidity measured by the thermometer 43 (S801).

Next, the estimating unit 141 obtains the estimated value of the current solar radiation from the weather forecast device 6. Similarly, the estimating unit 141 obtains the estimated value of the current outdoor temperature and the estimated value of the outdoor humidity from the weather forecast device 6 (S802). In addition, the estimating unit 141 obtains the estimated value of the solar radiation after X minutes from the weather forecast device 6. Similarly, the estimating unit 141 obtains the estimated value of the outdoor temperature and the estimated value of the outdoor humidity after X minutes from the weather forecast device 6 (S803).

Based on the information obtained from S801 to S803, the estimation unit 141 estimates the solar radiation after X minutes, the outdoor temperature after X minutes, and the outdoor humidity after X minutes (S804). For example, the estimation unit 141 calculates a correction coefficient for the current solar radiation based on the measured value and the estimated value. The estimation unit 141 estimates the solar radiation after X minutes in S804 by correcting the estimated value of the solar radiation after X minutes using the calculated correction coefficient.

Similarly, the estimation unit 141 calculates a correction coefficient for the current outdoor temperature based on the measured value and the estimated value. The estimation unit 141 estimates the outdoor temperature after X minutes have passed by correcting the estimated value of the outdoor temperature after X minutes have passed using the calculated correction coefficient. The estimation unit 141 calculates a correction coefficient for the current outdoor humidity based on the measured value and the estimated value. The estimation unit 141 estimates the outdoor humidity after X minutes have passed by correcting the estimated value of the outdoor humidity after X minutes have passed by using the calculated correction coefficient.

In the example shown in FIG. 13 , the weather estimation unit 121 estimates the weather X minutes later based on the solar radiation after X minutes, the outdoor temperature after X minutes, and the outdoor humidity after X minutes estimated by the estimation unit 141 in S804 .

The load calculation unit 134 calculates the indoor intrusion load caused by the temperature difference between the inside and the outside based on the outdoor temperature after the elapse of X minutes estimated by the estimating unit 141 in S804. The estimating unit 141 can estimate the indoor temperature after the elapse of X minutes by a method similar to that used to estimate the outdoor temperature after the elapse of X minutes. In the case of performing control for maintaining the temperature of the area A at a fixed value, the actual value of the current indoor temperature can be used as the indoor temperature after the elapse of X minutes.

FIG15 is a diagram showing an example of the load determination unit 130. The load determination unit 130 determines the second load at a time point when X minutes have passed from the current time. In the example shown in FIG15, the load determination unit 130 includes the number of people estimation unit 123 and the air volume estimation unit 142 in addition to the estimation unit 136 and the load calculation unit 137.

In order for the load determination unit 130 to determine the second load after X minutes, the outdoor temperature after X minutes, the outdoor humidity after X minutes, the indoor temperature after X minutes, and the indoor humidity after X minutes need to be input to the estimation unit 136. The air volume after X minutes needs to be input to the load calculation unit 137.

As described above, the outdoor temperature after X minutes and the outdoor humidity after X minutes are estimated by the estimating unit 141. The estimating unit 141 can estimate the indoor temperature after X minutes by a method similar to that used to estimate the outdoor temperature after X minutes. The estimating unit 141 can estimate the indoor humidity after X minutes by a method similar to that used to estimate the outdoor humidity after X minutes. In the case of performing control for keeping the temperature of the area A at a fixed value, the actual value of the current indoor temperature can be used as the indoor temperature after X minutes. In the case of performing control for keeping the humidity of the area A at a fixed value, the actual value of the current indoor humidity can be used as the indoor humidity after X minutes. The estimating unit 136 estimates the enthalpy difference between the inside and the outside after X minutes have passed, based on the outdoor temperature and humidity after X minutes have passed and the indoor temperature and humidity after X minutes have passed.

Air volume estimation unit 142 estimates the air volume of ventilation device 22 after X minutes have passed. When the air volume of ventilation device 22 is controlled according to the number of people D, air volume estimation unit 142 estimates the air volume of ventilation device 22 based on the number of people D after X minutes have passed.

For example, the person number estimation unit 123 performs processing similar to the processing of S106 to S109 to estimate the number of people D after X minutes have passed. That is, the person number estimation unit 123 obtains the measured value N1 of the number of people D at the current time from the calculation unit 362. The person number estimation unit 123 obtains the estimated value N2 of the number of people D at the current time from the storage unit 360. The person number estimation unit 123 obtains the estimated value N3 of the number of people D at a time point when X minutes have passed from the current time from the storage unit 360.

The number of people estimating unit 123 estimates the number of people D at a time point X minutes from the current time based on the measured value N1, the estimated value N2, and the estimated value N3. As an example, the number of people estimating unit 123 calculates a correction coefficient using the measured value N1 and the estimated value N2. The number of people estimating unit 123 estimates the number of people D after X minutes by correcting the estimated value N3 using the calculated correction coefficient. The air volume estimating unit 142 estimates the air volume of the ventilation device 22 after X minutes based on the number of people D after X minutes estimated by the number of people estimating unit 123.

The load calculation unit 137 calculates the second load based on the enthalpy difference between the inside and the outside after X minutes estimated by the estimation unit 136 and the air volume of the ventilation device 22 after X minutes estimated by the air volume estimation unit 142.

FIG16 is a diagram showing an example of the load determination unit 131. The load determination unit 131 determines the third load at a time point when X minutes have passed from the current time. In the example shown in FIG16, the load determination unit 131 includes a human number estimation unit 123 and a power estimation unit 143 in addition to a heat estimation unit 138, a heat estimation unit 139, and a load calculation unit 140.

In order for the load determination unit 131 to determine the third load after X minutes have passed, the number of people D after X minutes have passed needs to be input to the calorie estimation unit 138. The power consumption after X minutes has passed needs to be input to the calorie estimation unit 139.

The number of people estimating unit 123 performs processing similar to the processing of S106 to S109 to estimate the number of people D after X minutes have passed. For example, similar to the above example, the number of people estimating unit 123 estimates the number of people D at a time point X minutes have passed from the current time based on the measured value N1, the estimated value N2, and the estimated value N3. The estimated value N3 is an estimated value of the number of people D at a time point X minutes have passed from the current time. The calorie estimating unit 138 estimates the calorie Q1 based on the number of people D after X minutes have passed estimated by the number of people estimating unit 123.

The power estimation unit 143 estimates the power consumption at a time point X minutes from the current time. For example, the power estimation unit 143 obtains information about the current power consumption in the area A from the measuring device 51. In addition, the power estimation unit 143 obtains the measured value N1 of the number of people D at the current time from the calculation unit 362. The power estimation unit 143 obtains the estimated value N4 of the number of people D at a time point X minutes from the current time from the number of people estimation unit 123.

The power estimation unit 143 estimates the power consumption after X minutes based on the current power consumption, the measured value N1, and the estimated value N4. As an example, the power estimation unit 143 calculates a correction coefficient using the measured value N1 and the estimated value N4. The power estimation unit 143 estimates the power consumption after X minutes by correcting the current power consumption using the calculated correction coefficient. The heat estimation unit 139 estimates the heat Q2 based on the power consumption after X minutes estimated by the power estimation unit 143.

[Fourth Control] FIG. 17 is a diagram showing the functions of the control system required for performing the fourth control. The controller 12 includes a ventilation volume determination unit 144 and an action control unit 125.

The ventilation volume determination unit 144 determines the ventilation volume required for the area A. First, the ventilation volume determination unit 144 obtains information about the current number of people in the area A, that is, the current number of people D. For example, the ventilation volume determination unit 144 obtains the information about the number of people D from the elevator device 3. The ventilation volume determination unit 144 can obtain the measured value N1 of the number of people D at the current time from the calculation unit 362. The ventilation volume determination unit 144 can obtain the estimated value N2 of the number of people D at the current time from the storage unit 360.

Then, the ventilation volume determination unit 144 calculates the ventilation volume required for the area A based on the current number of people D. For example, the ventilation volume determination unit 144 performs the calculation by multiplying the ventilation volume required for each person by the number of people D. The ventilation volume required for each person is preset.

The operation control unit 125 controls the ventilation device 22. The ventilation device 22 is controlled based on the ventilation volume determined by the ventilation volume determination unit 144.

Fig. 17 is a diagram showing a function for performing ventilation control according to the current number of people D. Fig. 18 is a diagram showing a ventilation control function according to the number of people D after X minutes have passed. In the example shown in Fig. 18, the controller 12 includes a person number estimation unit 123 in addition to the ventilation volume determination unit 144 and the motion control unit 125.

Similar to the above example, the person number estimation unit 123 performs processing similar to the processing of S106 to S109 to estimate the number of people D at a time point X minutes from the current time. The ventilation volume determination unit 144 determines the ventilation volume required for the area A based on the number of people D estimated by the person number estimation unit 123 after X minutes.

[Fifth control] FIG. 19 is a diagram showing the functions of the control system required for performing the fifth control. In the example shown in FIG. 19, the air conditioning device 21 includes a ventilation device 22, a primary air conditioner 211, and a secondary air conditioner 212. The controller 12 includes a storage unit 120, load determination units 129 to 131, a ventilation volume determination unit 144, a capacity determination unit 145, a capacity determination unit 146, a mode determination unit 147, a humidification/dehumidification determination unit 148, a distribution determination unit 149, and an action control unit 125.

As described above, the ventilation device 22 is a device for introducing outdoor air into the area A. The primary air conditioner 211 processes the outdoor air introduced by the ventilation device 22. The primary air conditioner 211 may include the ventilation device 22 as one of the functions of the primary air conditioner 211. The primary air conditioner 211 may directly process the outdoor air introduced by the ventilation device 22. The outdoor air from the ventilation device 22 may be introduced into a space other than the area A, and then the air in the space may be processed by the primary air conditioner 211. The primary air conditioner 211 may process only a portion of the outdoor air introduced by the ventilation device 22. In the primary air conditioner 211, water may be used as a heat carrying medium, or a refrigerant, such as a substitute for CFC, may be used.

The secondary air conditioner 212 processes the outdoor air processed by the primary air conditioner 211. In addition, the secondary air conditioner 212 processes the air of the area A. The secondary air conditioner 212 delivers the conditioned air to the area A. In the secondary air conditioner 212, water can be used as a heat carrier, and a refrigerant, such as a CFC substitute, can also be used.

Generally speaking, the coefficient of performance (COP) characteristic curve of an air conditioning unit depends on a variety of factors. These factors include the manufacturer, the model of the unit, the type of heat carrier medium, and the flow rate of the medium. In addition, when water is used as the heat carrier medium, the temperature difference between cold water or hot water and the temperature difference at the outlet are included in the factors.

The characteristic curve of the coefficient of performance of the primary air conditioner 211 is stored in the storage unit 120 of the controller 12. In the following description, the characteristic curve is also referred to as the first COP characteristic curve. The first COP characteristic curve varies according to the control parameter setting content of the primary air conditioner 211. Therefore, it is desirable to store a plurality of first COP characteristic curves corresponding to various setting contents in the storage unit 120.

The characteristic curve of the performance coefficient of the secondary air conditioner 212 is stored in the storage unit 120. In the following description, the characteristic curve is also referred to as the second COP characteristic curve. The second COP characteristic curve varies according to the control parameter setting content of the secondary air conditioner 212. Therefore, it is desirable to store a plurality of second COP characteristic curves corresponding to various setting contents in the storage unit 120.

Fig. 20 is a flowchart showing an exemplary operation of the control system. Fig. 20 shows an example of the control system performing the fifth control.

Each load determination unit 129 to 131 has the function described in the third control. That is, the load determination unit 129 determines the first load based on the solar radiation amount of the area A and the temperature difference between the inside and the outside of the area A (S901). The load determination unit 130 determines the second load based on the enthalpy difference between the inside and the outside of the area A and the air volume of the ventilation device 22 (S902). The load determination unit 131 determines the third load based on the heat generated by the people in the area A and the heat generated by the equipment in the area A (S903).

The ventilation volume determination section 144 has the function described in the fourth control. That is, the ventilation volume determination section 144 determines the ventilation volume required for the area A, that is, the ventilation volume according to the number of people in the area A (S904).

The capacity determination unit 145 determines the capacity required for the primary air conditioner 211 (S905). The capacity determination unit 145 performs the capacity determination in S905 based on the first load determined by the load determination unit 129, the second load determined by the load determination unit 130, and the ventilation volume determined by the ventilation volume determination unit 144.

The capacity determination unit 146 determines the capacity required for the secondary air conditioner 212 (S906). The capacity determination unit 146 performs the capacity determination in S906 based on the third load determined by the load determination unit 131.

The mode determination unit 147 determines the operation mode (S907). For example, the mode determination unit 147 determines the cooling mode or the heating mode as the operation mode. The mode determination unit 147 determines the operation mode of the primary air conditioner 211 based on the capacity determined by the capacity determination unit 145 and the capacity determined by the capacity determination unit 146. The mode determination unit 147 determines the operation mode of the secondary air conditioner 212 based on the capacity determined by the capacity determination unit 145 and the capacity determined by the capacity determination unit 146.

The humidification/dehumidification determination unit 148 determines the humidification amount or dehumidification amount required for the area A (S908). For example, if humidification is required by the air conditioning device 21, the humidification/dehumidification determination unit 148 determines the required humidification amount. If dehumidification is required by the air conditioning device 21, the humidification/dehumidification determination unit 148 determines the required dehumidification amount. The determination in S908 is performed based on the capacity determined by the capacity determination unit 145 and the capacity determined by the capacity determination unit 146.

The allocation determination unit 149 determines the ratio between the capacity allocated to the primary air conditioner 211 and the capacity allocated to the secondary air conditioner 212 (S909). The determination in S909 is performed based on the determination result obtained by the mode determination unit 147, the determination result obtained by the humidification/dehumidification determination unit 148, the first COP characteristic curve, and the second COP characteristic curve.

In S909, the allocation determination unit 149 first adds the capacity determined by the capacity determination unit 145 to the capacity determined by the capacity determination unit 146. In addition, the allocation determination unit 149 determines whether the humidification amount or dehumidification amount determined by the humidification/dehumidification determination unit 148 can be achieved only by the performance of the secondary air conditioner 212 based on the outdoor environmental conditions measured by the thermometer 43 or the like.

For example, consider a case where the humidification performance of the secondary air conditioner 212 is low. In such a case, if the humidification amount determined by the humidification/dehumidification determination unit 148 cannot be achieved by the secondary air conditioner 212 alone, the allocation determination unit 149 determines to use the primary air conditioner 211 and the secondary air conditioner 212 for humidification. In addition, in dehumidification, it is necessary to process the latent heat of all capacities (sensible heat and latent heat). Therefore, when dehumidifying, the allocation determination unit 149 needs to consider the latent heat processing capacity of the primary air conditioner 211 and the latent heat processing capacity of the secondary air conditioner 212. If the sensible heat factor (SHF) changes, the COP characteristic curve will also change. Therefore, it is desirable to store a plurality of first COP characteristic curves having different sensible heat coefficient values in the storage unit 120. It is desirable to store a plurality of second COP characteristic curves having different sensible heat coefficient values in the storage unit 120.

Next, the allocation determination unit 149 extracts a first COP characteristic curve corresponding to various conditions of the primary air conditioner 211 from the storage unit 120. Similarly, the allocation determination unit 149 extracts a second COP characteristic curve corresponding to various conditions of the secondary air conditioner 212 from the storage unit 120. Next, based on the extracted first COP characteristic curve and the extracted second COP characteristic curve, the allocation determination unit 149 determines the portion of the above-mentioned total capacity allocated to the primary air conditioner 211 and the portion allocated to the secondary air conditioner 212, so that the overall COP of the air conditioning device 21 is maximized or maximized as much as possible.

Fig. 21 is a diagram showing an example of the first COP characteristic curve and the second COP characteristic curve extracted by the allocation determination unit 149. In the example shown in Fig. 21, the overall COP of the air-conditioning device 21 is maximized at P1. The allocation determination unit 149 determines the ratio of the capacity allocated to the primary air-conditioner 211 to the capacity allocated to the secondary air-conditioner 212 so that the primary air-conditioner 211 and the secondary air-conditioner 212 can operate at a capacity as close to P1 as possible.

As described above, the COP characteristic curve depends on many factors. For example, consider the case where the secondary air conditioner 212 contains a refrigerant. In such a case, the second COP characteristic curve changes as the refrigerant temperature changes. The change in the refrigerant temperature has a great influence on the change in the second COP characteristic curve. Therefore, it is desirable to store a plurality of second COP characteristic curves with different refrigerant temperature values in the storage unit 120. For example, in an air conditioner, the condensing performance can be improved by lowering the refrigerant temperature. Even when the refrigerant temperature is lowered so that the secondary air conditioner 212 can perform dehumidification, the allocation determination unit 149 can extract the best second COP characteristic curve.

Similarly, when the primary air conditioner 211 includes a refrigerant as a heat carrier medium, it is desirable that the storage unit 120 stores a plurality of first COP characteristic curves having different refrigerant temperature values. When each of the primary air conditioner 211 and the secondary air conditioner 212 includes a refrigerant as a heat carrier medium, it is desirable that the storage unit 120 stores a plurality of first COP characteristic curves and a plurality of second COP characteristic curves having different refrigerant temperature values.

The action control unit 125 controls the air conditioning device 21 according to the determination result obtained by the allocation determination unit 149 (S910). For example, the action control unit 125 outputs the target values of temperature, humidity and air volume for each of the primary air conditioner 211 and the secondary air conditioner 212. If the primary air conditioner 211 includes a refrigerant, the action control unit 125 outputs the target refrigerant temperature value of the primary air conditioner 211. If the secondary air conditioner 212 includes a refrigerant, the action control unit 125 outputs the target refrigerant temperature value of the secondary air conditioner 212.

Regarding the target temperature and humidity values of the secondary air conditioner 212, it is desirable to use values determined by the user or the third control. The target temperature and humidity values of the primary air conditioner 211 can be changed arbitrarily. Regarding the target air volume value of the ventilation device 22, it is desirable to use a value corresponding to the number of people D estimated by the first control or a value determined by the fourth control. The target refrigerant temperature value is mainly determined based on the above-mentioned latent heat treatment capacity.

When the indoor humidity is higher than the target value, dehumidification can be prioritized in the control. In such a case, for example, for the primary air conditioner 211 or the secondary air conditioner 212 having a higher COP, an instruction to lower the target temperature is output. An instruction can be output to lower the refrigerant temperature of the above-mentioned air conditioner. As another example, in the case where the primary air conditioner 211 is prioritized for dehumidification, and when a sufficient amount of dehumidification cannot be obtained by the primary air conditioner 211, an instruction to lower the refrigerant temperature of the secondary air conditioner 212 can be output.

In the fifth control, the allocation determination unit 149 determines the ratio between the capacity allocated to the primary air conditioner 211 and the capacity allocated to the secondary air conditioner 212. This determination is performed based on the determination result obtained by the mode determination unit 147, the determination result obtained by the humidification/dehumidification determination unit 148, the first COP characteristic curve, and the second COP characteristic curve in consideration of the overall COP of the air conditioner 21. Therefore, the control system can realize appropriate air conditioning control according to the state of the area A while considering the overall COP of the air conditioner 21.

22 is a diagram showing exemplary hardware resources of the controller 12. The controller 12 includes a processing circuit 60, which includes a processor 61 and a memory 62 as hardware resources. The processing circuit 60 may include a plurality of processors 61. The processing circuit 60 may include a plurality of memories 62.

In this embodiment, each unit represented by component symbols 120 to 149 represents the function of the controller 12. The function of the storage unit 120 can be realized by the memory 62. The functions of the individual units represented by component symbols 121 to 149 can be realized by software, firmware, or a combination of software and firmware, which is described as a program. The program is stored in the memory 62. The controller 12 causes the processor 61 (computer) to execute the program stored in the memory 62, thereby realizing the functions of the individual units represented by component symbols 121 to 149.

The processor 61 is also called a central processing unit (CPU), a central processing device, a processing device, an arithmetic device, a microprocessor, a microcomputer or a DSP. The memory 62 can be a semiconductor memory, a magnetic disk, a flexible disk, an optical disk, a compact disk, a mini disk or a DVD. The semiconductor memory that can be used includes RAM, ROM, flash memory, EPROM, EEPROM, etc.

FIG23 is a diagram showing another exemplary hardware resource of the controller 12. In the example shown in FIG23, the controller 12 includes a processing circuit 60 in addition to a processor 61 and a memory 62, and the processing circuit 60 includes dedicated hardware 63. FIG23 shows an example in which a portion of the functions of the controller 12 are implemented by the dedicated hardware 63. All functions of the controller 12 can be implemented by the dedicated hardware 63. The dedicated hardware 63 can be a single circuit, a complex circuit, a programmed processor, a parallel programmed processor, an ASIC, an FPGA, or a combination thereof.

The hardware resources of the headcount management device 36 are similar to the examples shown in FIG. 22 or FIG. 23. The headcount management device 36 has a processing circuit including a processor and a memory used as hardware resources. The headcount management device 36 causes the processor to execute a program stored in the memory to implement the functions of the individual parts represented by component symbols 361 to 363. The headcount management device 36 may have a processing circuit including a processor, a memory, and dedicated hardware used as hardware resources. A portion of the entire functions of the headcount management device 36 may also be implemented by dedicated hardware. Industrial Utilization

The control system according to the present disclosure is applicable to a system including an air conditioning device.

1: Management action equipment 2: Air conditioning equipment 3: Elevator equipment 4: Environmental measurement equipment 5: Power measurement equipment 6: Weather forecast device 11: Display device 12: Controller 21: Air conditioning device 211: Primary air conditioner 212: Secondary air conditioner 22: Ventilation device 31: Communication device 32: Group control panel 33: Control panel 34: Traction machinery 35: Carriage 36: Number of people management device 37: Weighing device 41: Input/output device 42: All-sky radiometer 43~44: Thermohygrometer 45: CO ₂ Concentration meter 51: Measuring device 52: Lighting board 53: Distribution board 54: Solar generator 60: Processing circuit 61: Processor 62: Memory 63: Dedicated hardware 120: Storage unit 121: Weather estimation unit 122: Time determination unit 123: Number of people estimation unit 124: Determination unit 125: Action control unit 126: Determination unit 127: Detection unit 128: Establishment unit 129~131: Load determination unit 132: Solar radiation estimation unit 133~135: Load meter Calculation unit 136: estimation unit 137: load calculation unit 138~139: heat estimation unit 140: load calculation unit 141: estimation unit 142: air volume estimation unit 143: power estimation unit 144: ventilation volume determination unit 145~146: capacity determination unit 147: mode determination unit 148: humidification/dehumidification determination unit 149: allocation determination unit 150: clock 360: storage unit 361: detection unit 362: calculation unit 363: learning unit S101~S910: step

FIG. 1 is a diagram showing an example of a control system according to the first embodiment. FIG. 2 is a diagram showing functions of a control system required for performing a first control. FIG. 3 is a flowchart showing an exemplary action of a control system. FIG. 4 is a diagram showing functions of a control system required for establishing a time delay database. FIG. 5 is a flowchart showing an exemplary action of a control system. FIG. 6 is a flowchart showing an exemplary action of a control system. FIG. 7 is a diagram showing functions of a control system required for performing a third control. FIG. 8 is a flowchart showing an exemplary action of a control system. FIG. 9 is a flowchart showing an example of determining a first load. FIG. 10 is a flowchart showing an example of determining a second load. FIG. 11 is a flowchart showing an example of determining a third load. FIG. 12 is a diagram showing the functions of the control system required for establishing a solar radiation amount database. FIG. 13 is a diagram showing an example of a load determination unit. FIG. 14 is a flowchart showing an exemplary operation of an estimation unit. FIG. 15 is a diagram showing an example of a load determination unit. FIG. 16 is a diagram showing an example of a load determination unit. FIG. 17 is a diagram showing the functions of the control system required for performing the fourth control. FIG. 18 is a diagram showing the ventilation control function according to the number of people D after X minutes. FIG. 19 is a diagram showing the functions of the control system required for performing the fifth control. FIG. 20 is a flowchart showing an exemplary operation of the control system. FIG. 21 is a diagram showing examples of the first COP characteristic curve and the second COP characteristic curve extracted by the allocation determination unit. FIG. 22 is a diagram showing an exemplary hardware resource of a controller. FIG. 23 is a diagram showing another exemplary hardware resource of a controller.

3: Elevator equipment

12: Controller

21: Air conditioning device

22: Ventilation device

36: Deposit management device

37: Weighing device

42: All-sky radiometer

43: Thermohygrometer

120: Storage Department

121: Weather Prediction Department

122: Time determination department

123: Population Estimation Department

124: Confirmation Department

125: Motion control unit

150:Clock

360: Storage Department

361: Testing Department

362: Computing Department

363: Study Department

Claims (8)

A control system includes: an air conditioning device for delivering conditioned air to a specific area; and a controller for controlling the air conditioning device, and the controller includes: a time determination unit configured to determine a time delay at the current moment based on the current weather and the current time, wherein the time delay represents the time interval from the start of the air conditioning device until the temperature of the area stabilizes at the target temperature; a population estimation unit configured to estimate the number of people in the area at a time point from the current time to the time delay determined by the time determination unit; a determination unit configured to determine whether to start the air conditioning device based on the number of people estimated by the population estimation unit; and The action control unit is configured to activate the air conditioning device according to the determination result obtained by the determination unit. A control system as described in claim 1, wherein: the determination unit determines whether the number of people estimated by the number of people estimation unit is greater than a first reference value; and the action control unit activates the air conditioning device when the determination unit determines that the number of people estimated by the number of people estimation unit is greater than the first reference value. A control system includes: an air conditioning device for delivering conditioned air to a specific area; and a controller for controlling the air conditioning device, and the controller includes: a time determination unit configured to determine a time delay at the current moment based on the current weather and the current time, wherein the time delay represents the time interval from the change of the parameter setting content for controlling the air conditioning device until the temperature of the area stabilizes at the target temperature; a person number estimation unit configured to estimate the number of people in the area at a time point from the current time to the time delay determined by the time determination unit; a determination unit configured to determine whether to change the setting content based on the number of people estimated by the person number estimation unit; and The action control unit is configured to change the setting content according to the determination result obtained by the determination unit. A control system as described in claim 3, wherein: the determination unit determines whether the number of people estimated by the number of people estimation unit is less than a second reference value; and the action control unit changes the setting content from the first content to the second content when the determination unit determines that the number of people estimated by the number of people estimation unit is less than the second reference value. A control system as described in claim 4, wherein: the determination unit determines whether the number of people estimated by the number of people estimation unit is greater than a third reference value; the third reference value is greater than the second reference value; and after the setting content is changed to the second content, the action control unit changes the setting content to the first content when the determination unit determines that the number of people estimated by the number of people estimation unit is greater than the third reference value. A control system as described in any one of claims 1 to 5, wherein, the number of people estimating unit estimates the number of people in the area based on a measured value at the current time, a first estimated value at the current time, and a second estimated value at a time point after the time delay determined by the time determination unit; and the number of people estimating unit obtains the first estimated value and the second estimated value from an elevator device capable of carrying passengers to the floor where the area is located. A control system as described in claim 6, wherein the population estimation unit calculates a correction coefficient using the measured value and the first estimated value, and estimates the population of the area by correcting the second estimated value using the correction coefficient. A control system as described in any one of claims 1 to 5, wherein, the controller further includes a weather estimation unit, the weather estimation unit is configured to estimate the current weather based on the current solar radiation; and the time determination unit determines the time delay based on the weather estimated by the weather estimation unit.