JP2015152175A - Air quality evaluation device and air quality evaluation system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air quality evaluation device and an air quality evaluation system capable of evaluating air quality maintenance performance of a building itself.SOLUTION: An air quality evaluation system includes: an indoor air quality sensor 10 for outputting an indoor air quality value showing indoor air quality of a building; an outdoor air quality sensor 20 for outputting an outdoor air quality value showing outdoor air quality of the building; and an air quality improvement device 30 for cleaning the indoor air of the building. Also, the air quality evaluation system has an indoor air quality sensor 10 and an air quality evaluation server 100 which can communicate with the indoor air quality sensor 10. The air quality evaluation server 100 includes an evaluation unit for acquiring an improved degree of the indoor air quality of the building based on an average value b preset based on the outdoor air quality value received from the outdoor air quality sensor 20 and the indoor air quality value received from the indoor air quality sensor 10 when the air quality improvement device 30 is operated.

Description

  The present invention relates to an air quality evaluation apparatus and an air quality evaluation system for evaluating the indoor air quality of a building.

  Patent Document 1 discloses a device that detects the air quality such as the temperature, humidity, odor, and amount of dust inside the building and controls the air purifier (air quality improvement device) based on the detection result. .

Japanese Patent No. 3211343

  In addition to the air quality improvement performance of the air quality improvement device, the air quality maintenance performance of the building itself greatly affects the indoor air quality of the building.

  The present invention provides an air quality evaluation apparatus and an air quality evaluation system capable of evaluating the air quality maintenance performance of a building itself.

  An air quality evaluation apparatus according to the present invention includes an outdoor air quality sensor that outputs an outdoor air quality value indicating an indoor air quality of a building, an indoor air quality sensor that outputs an indoor air quality value indicating an outdoor air quality of the building, and Have In addition, the air quality evaluation device includes an indoor air when the air quality improving means for purifying the indoor air of the building and the first predetermined value set based on the outdoor air quality value and the air quality improving means are operated. Evaluation means for obtaining a degree of improvement in indoor air quality of the building based on the quality value.

  The evaluation means is the first predetermined value when the temporal change rate of the indoor air quality value when the air quality improvement means is activated is reduced to a predetermined value as a degree of improvement in the indoor air quality of the building. You may obtain | require the ratio or difference with an indoor air quality value.

  The evaluation means, as a degree of improvement in the indoor air quality of the building, the temporal change rate of the difference between the first predetermined value and the indoor air quality value when the air quality improvement means is activated has decreased to a predetermined value The ratio or difference between the first predetermined value and the indoor air quality value may be obtained.

  The evaluation means is a second predetermined value in which the indoor air quality value when the air quality improvement means is operated is smaller than the first predetermined value from the first predetermined value as the indoor air quality improvement degree of the building You may obtain | require the time until it falls to.

  The second predetermined value may be a target value where the indoor air quality of the building satisfies a predetermined good condition.

  The second predetermined value is the indoor air quality value output from the indoor air quality sensor when the temporal change rate of the indoor air quality value is lowered to the predetermined value when the air quality improving means is operated. Also good.

  In the case where the air quality improvement means is operated as the degree of improvement in the indoor air quality of the building, the evaluation means starts from the time when the indoor air quality value decreases to the first predetermined value and You may obtain | require the time until the difference with an air quality value increases to a predetermined value.

  When the air quality improvement means is operated as the degree of improvement in the indoor air quality of the building, the evaluation means is the same as the indoor air quality value and the first value since the indoor air quality value has decreased to the first predetermined value. You may obtain | require the time until the temporal change rate of the difference with a predetermined value falls to a predetermined value.

  The air quality evaluation apparatus may further include a ventilation state detection unit that detects a ventilation state between the indoor and the outdoor of the building. The evaluation unit may control the evaluation operation of the air quality improvement degree in the building based on the ventilation state detected by the ventilation state detection unit.

  When the evaluation unit determines whether the ventilation state detected by the ventilation state detection unit is in a predetermined ventilation state in which air flows between the indoor and the outdoor of the building, and determines that the ventilation state is in the predetermined ventilation state May stop evaluating the indoor air quality improvement of the building.

  The air quality evaluation system of the present invention includes an outdoor air quality sensor that outputs an outdoor air quality value indicating the indoor air quality of a building, and an indoor air quality sensor that outputs an indoor air quality value indicating the outdoor air quality of the building; And air quality improving means for purifying indoor air of the building. The air quality evaluation system includes a server that can receive data indicating outdoor air quality values and data indicating indoor air quality values via a network. The server uses the first predetermined value set based on the outdoor air quality value received from the outdoor air quality sensor and the indoor air quality value received from the indoor air quality sensor when the air quality improving means is operated. Based on the above, an evaluation means for obtaining a degree of improvement in air quality in the building is provided.

  According to the present invention, the air quality maintenance performance of the building itself can be evaluated.

It is a figure which shows the structure of the air quality evaluation system which concerns on Embodiment 1. FIG. It is a figure which shows the functional block of the air quality evaluation server of the air quality evaluation system which concerns on Embodiment 1. FIG. It is a figure which shows the hardware constitutions of the air quality evaluation system which concerns on Embodiment 1. FIG. It is a figure explaining the air quality evaluation method by the air quality evaluation system concerning Embodiment 1. FIG. 6 is a flowchart illustrating an example of an air quality evaluation operation of an air quality evaluation server of the air quality evaluation system according to the first embodiment. It is a figure explaining the air quality evaluation method by the air quality evaluation system which concerns on Embodiment 2. FIG. 10 is a flowchart illustrating an example of an air quality evaluation operation of an air quality evaluation server of the air quality evaluation system according to the second embodiment. It is a figure explaining the air quality evaluation method by the air quality evaluation system which concerns on Embodiment 3. FIG. 10 is a flowchart illustrating an example of an air quality evaluation operation of an air quality evaluation server of an air quality evaluation system according to a third embodiment. It is a figure which shows the structure of the air quality evaluation system which concerns on Embodiment 4. FIG. It is a figure explaining the air quality evaluation method by the air quality evaluation system which concerns on Embodiment 4. FIG. 10 is a flowchart illustrating an example of an air quality evaluation operation of an air quality evaluation server of an air quality evaluation system according to a fourth embodiment.

  An embodiment of the present invention will be described.

(Background of the Invention)
In view of the problem of air pollution, there are air cleaners that sense indoor air quality and operate based on the results. Technology that removes pollutants from the building indoors by adding an air purifying function to the ventilator, or operating an air purifier based on air pollution information issued by outdoor air quality sensors and weather forecasting ministries. Exists. However, there is no system for correctly evaluating the air cleaning effect inside the building. Therefore, in a building or the like that exists in an environment with poor air quality, even if an air purifier or a ventilation device with an air purifying function is provided, the influence of a decline in real estate value due to reputation regarding air quality cannot be avoided.

  In view of the problem of air pollution as described above, this embodiment provides an air quality evaluation apparatus and an air quality evaluation system that can accurately evaluate air quality.

(Embodiment 1)
1. Configuration FIG. 1 is a diagram showing a configuration of an air quality evaluation system according to Embodiment 1 of the present invention.

  The air quality evaluation system of this embodiment includes an indoor air quality sensor 10, an outdoor air quality sensor 20, an air quality improvement device 30, a home gateway device 40 (hereinafter referred to as “home GW 40” as appropriate), and an air quality evaluation server 100. Have.

  The indoor air quality sensor 10 is installed in an evaluation target section inside a building such as a house. If the section to be evaluated is a house, it is, for example, a living room or a bedroom. In the case of a house, it is preferable to remove a section having many air quality disturbance factors such as a kitchen, a smoker's room, and a front door from the section to be evaluated. The indoor air quality sensor 10 can be connected to the home GW 40 via a communication means such as a wired LAN or a wireless LAN. The indoor air quality sensor 10 detects, for example, dust concentrations (particulate matter in air of various sizes, mold, pollen, PM2.5, etc.), odor, smoke, and the like as air quality sensing indicators. The indoor air quality sensor 10 outputs indoor air quality data indicating the detected indoor air quality value. Note that the air quality content to be evaluated may be determined according to the air quality desired by the user. The indoor air quality sensors 10 may be installed at a plurality of locations in a section to be evaluated inside a building.

  The outdoor air quality sensor 20 is installed outside the building. For example, it is installed on the outer wall of a building. The outdoor air quality sensor 20 can be connected to the home GW 40 via a communication means such as a wired LAN or a wireless LAN. As with the indoor air quality sensor 10, the outdoor air quality sensor 20 detects, for example, the concentration of dust (particulate matter such as mold in the air, pollen, PM2.5, etc.), odor, and smoke as air quality sensing indicators. To do. The outdoor air quality sensor 20 outputs outdoor air quality data indicating the detected outdoor air quality value. The outdoor air quality sensor 20 may be installed at a plurality of locations outside the building.

  The air quality improvement device 30 is a device that improves the indoor air quality of a building. The air quality improvement device 30 includes an air purifier 31 and a ventilation device 32. The air cleaner 31 has a filter or the like that adsorbs dust (mold in the air, pollen, particulate matter such as PM2.5) and the like, and purifies the air. The ventilation device 32 includes an intake filter for preventing air quality deterioration due to dust (mold in the air, pollen, particulate matter such as PM2.5) when the outside air is inhaled indoors. The air quality improvement device 30 outputs information indicating the operation state of the device 30 to the home GW 40. The air quality improvement device 30 can be operated remotely (ON / OFF, operation mode, and output) and may or may not be able to do so. However, the function of outputting information related to the operational state to the home GW 40. It is necessary to have at least.

  The home GW 40 inputs the air quality data output from the outdoor air quality sensor 20 and the outdoor air quality sensor 20 at a predetermined cycle. The home GW 40 transmits the air quality data acquired from both sensors to the air quality evaluation server 100 via a communication network such as the Internet.

  The air quality evaluation server 100 receives air quality data from the home GW 40, stores the received air quality data, etc., analyzes and evaluates the data, and evaluates the air quality performance of the building. The air quality evaluation server 100 has a Web server function and the like.

  FIG. 2 is a diagram illustrating functional blocks of the air quality evaluation server 100. The air quality evaluation server 100 includes, as functional blocks, a home gateway communication unit 101 (hereinafter referred to as “GW communication unit 101” as appropriate), an air quality data storage unit 102, an evaluation unit 103, an air quality evaluation result storage unit 104, and a WEB server. Part 105. The GW communication unit 101 communicates with the home GW 40 via the Internet. The air quality data storage unit 102 stores time-series air quality data received from the home GW 40. The evaluation unit 103 evaluates the air quality data stored in the air quality data storage unit 102 according to a predetermined procedure. The WEB server unit 105 outputs an air quality evaluation result when accessed from a user information terminal 200 or the like.

  FIG. 3 is a diagram illustrating a hardware configuration of the air quality evaluation server 100. The air quality evaluation server 100 includes a central processing unit 110 (hereinafter referred to as “CPU 110” as appropriate), a storage unit 120, and a communication interface 130 (hereinafter referred to as “communication I / F 130” as appropriate) as hardware. The storage unit 120 stores programs and data for performing air quality evaluation. CPU110 reads a program from the memory | storage part 120, and performs arithmetic processing with respect to air quality data etc. according to the read program. In the GW communication unit 101, the air quality data storage unit 102, the evaluation unit 103, the air quality evaluation result storage unit 104, and the WEB server unit 105 shown in FIG. 2, the CPU 110 exchanges signals with the storage unit 120, the communication I / F 130, and the like. It is configured by executing a program while performing it.

2. Operation The operation of the air quality evaluation system according to the present embodiment will be described with reference to FIGS. FIG. 4 is a diagram illustrating an air quality evaluation method by the air quality evaluation system according to the first embodiment. The vertical axis in FIG. 4 indicates the air quality value, and the horizontal axis indicates time. A larger air quality value indicates a worse air environment. The broken line in FIG. 4 indicates the outdoor air quality value detected by the outdoor air quality sensor 20, and the solid line indicates the indoor air quality value detected by the indoor air quality sensor 10. FIG. 5 is a flowchart for explaining an example of the air quality evaluation operation of the air quality evaluation server 100 of the air quality evaluation system according to the first embodiment.

  The GW communication unit 101 communicates with the in-home GW 40, information on the operating state of the air quality improvement device 30, outdoor air quality data indicating outdoor air quality values detected by the outdoor air quality sensor 20, and an indoor air quality sensor Indoor air quality data indicating the indoor air quality value detected at 10 is acquired (S11).

  The air quality data storage unit 102 stores information regarding the operating state of the air quality improvement device 30 acquired by the GW communication unit 101, outdoor air quality data, and indoor air quality data in association with the acquisition time (S12).

  The evaluation unit 103 determines whether or not the change in the indoor air quality value during the past predetermined time is equal to or less than the predetermined value (S13). The predetermined time is, for example, 1 hour. Hereinafter, the rate of change of the indoor air quality value during the past predetermined time is appropriately referred to as “time rate of change”. The predetermined value is a value close to zero for determining that there is almost no change in the indoor air quality value. That is, the predetermined value is a value for determining that the indoor air quality value has been improved and has reached the best value in the steady state.

  If the change in the indoor air quality value is not less than or equal to the predetermined value (NO in S13), the air quality evaluation server 100 repeats the operations after step S11. On the other hand, when the change in the indoor air quality value is equal to or less than the predetermined value (YES in S13), the evaluation unit 103 indicates that the information regarding the operating state of the air quality improvement device 30 acquired by the GW communication unit 101 is air quality. It is determined whether or not the improvement device 30 is operating (S14).

  When the air quality improvement device 30 is not operating (NO in S14), the air quality evaluation server 100 repeats the operations after step S11. On the other hand, when the air quality improvement device 30 is operating (YES in S14), the evaluation unit 103 sets the current indoor air quality value as the best indoor air quality value a (S15). .

  The evaluation unit 103 obtains an average value b of outdoor air quality values for a predetermined number of days in the past (S16). The predetermined number of days is, for example, 1 to 3 days.

  The evaluation unit 103 obtains a ratio b / a between the average value b of outdoor air quality values and the best value a for evaluation of indoor air quality values (S17).

  The air quality evaluation result storage unit 104 stores the evaluation result ratio b / a in association with the evaluated building (S18).

3. Air Quality Evaluation Method The best value a of indoor air quality depends on the airtight performance of the building. Therefore, there is a correlation between the outdoor air quality and the indoor air quality best value a. Therefore, in the present embodiment, the ratio b / a between the average value b of the measured values of the outdoor air quality sensor 20 and the best value a of the indoor air quality sensor 10 is obtained as the improvement degree of the indoor air quality of the building. The degree of air quality improvement is the degree to which the air quality has been improved (improved). Obtaining the degree of improvement in indoor air quality of a building is also evaluating the air quality maintenance performance of the building. A larger value of the ratio b / a indicates that the air quality is improved, that is, the air quality maintenance performance in the building is excellent.

  In addition, when the performance of the air quality improvement device 30 is relatively poor, or when the airtightness of the building is poor and the value of the best value a is larger than the average value b, the degree of improvement in the air quality inside the building The difference b−a may be obtained.

  In addition, after acquiring outdoor air quality data and indoor air quality data over a long period of time, the ratio b / a or the difference b−a may be obtained by analyzing long-term outdoor air quality values and indoor air quality values. Good. In this case, the location where the temporal change rate of the indoor air quality value is equal to or less than the predetermined value is searched, the abnormal value is excluded by statistical processing, and the ratio b / a or the difference b−a is obtained at each location. The values may be averaged and evaluated.

  According to this embodiment, (1) the air quality maintenance / purification performance of the building system itself in which these are installed, not the performance of the air cleaner or the ventilation device, is evaluated, and the long-term environment of the indoor air quality of the building is evaluated. Can be grasped. In addition, (2) by evaluating and grasping the air quality performance of the building as a whole, the environmental performance and its maintenance are shown as evaluation results in the deterioration of the external air quality environment, which is a city pollution. It is possible to maintain and improve value.

  The air quality evaluation server 100 records air quality data of a plurality of buildings. Therefore, the air quality evaluation server 100 may compare air quality, air quality purification performance, and the like between a plurality of buildings. With this configuration, the user accesses the WEB server unit 105 of the air quality evaluation server 100 using his / her own information terminal 200, and information such as how the performance of the owned building is positioned in the whole or for improvement Can be obtained. For improvement, the user can improve the airtightness of the building, strengthen the air quality improvement device 30 such as the ventilation device 32 and the air purifier 31, and remove the source of in-home contamination.

  In addition, the outdoor environment varies greatly depending on the area and location where the building exists. Therefore, the average outdoor air quality varies greatly depending on the region and location. By acquiring outdoor air quality values and indoor air quality data for a long period of time, the best value according to the outdoor environment can be obtained. Then, by comparing the best values in regions and places with similar outdoor environments, it is possible to compare air quality performance for each building.

4). Summary The air quality evaluation system of the present invention includes an indoor air quality sensor 10 that outputs an indoor air quality value that indicates the indoor air quality of a building, and an outdoor air quality that outputs an outdoor air quality value that indicates the outdoor air quality of the building. It has the sensor 20 and the air quality improvement apparatus 30 which cleans the indoor air of a building. The air quality evaluation system includes an indoor air quality sensor 10 and an air quality evaluation server 100 that can communicate with the indoor air quality sensor 10. The air quality evaluation server 100 uses the average value b (first predetermined value) based on the outdoor air quality value received from the outdoor air quality sensor 20 and the indoor air quality sensor 10 when the air quality improvement device 30 is operated. Based on the received indoor air quality value, an evaluation unit 103 is provided for obtaining a degree of improvement in indoor air quality of the building.

  According to this embodiment, the air quality maintenance performance of the building itself can be evaluated.

  The evaluation unit 103 calculates the average value b () when the temporal change rate of the indoor air quality value when the air quality improvement device 30 is operated is reduced to a predetermined value as the indoor air quality improvement degree. A ratio b / a or a difference b−a between the first predetermined value) and the indoor air quality value a (best value a) is obtained.

  Thereby, the temporary fluctuation | variation of outdoor air quality can be excluded, and the air quality maintenance performance of the building itself can be evaluated correctly.

  In addition, the evaluation part 103 is the time of the difference of the average value b (1st predetermined value) and the indoor air quality value when the air quality improvement apparatus 30 is operated as the indoor air quality improvement degree of the building. You may obtain | require the ratio or difference of the average value b (1st predetermined value) and the indoor air quality value a (best value a) when a static change rate falls to a predetermined value.

  This also makes it possible to accurately evaluate the air quality maintenance performance of the building itself by eliminating temporary fluctuations in outdoor air quality.

(Embodiment 2)
In this embodiment, the time until the indoor air quality value decreases from the specified value to the best value is used as an evaluation index, and the indoor air quality improvement level of the building is obtained based on the index.

1. Configuration The hardware configuration of the air quality evaluation system according to the second embodiment is the same as that of the first embodiment. In addition, the program memorize | stored in the memory | storage part 120 of the air quality evaluation server 100 is memorize | stored for implement | achieving the air quality evaluation operation | movement of the air quality evaluation system which concerns on Embodiment 2. FIG.

2. Operation The operation of the air quality evaluation system according to this embodiment will be described with reference to FIGS. FIG. 6 is a diagram for explaining an air quality evaluation method by the air quality evaluation system according to the second embodiment. The vertical axis in FIG. 6 indicates the air quality value, and the horizontal axis indicates time. A larger air quality value indicates a worse air environment. The broken line in FIG. 6 indicates the outdoor air quality value detected by the outdoor air quality sensor 20, and the solid line indicates the indoor air quality value detected by the indoor air quality sensor 10. FIG. 7 is a flowchart for explaining an example of the air quality evaluation operation of the air quality evaluation server 100 of the air quality evaluation system according to the second embodiment.

  In steps S21 and S22, processing similar to that in steps S11 and S12 of the first embodiment is performed. That is, the GW communication unit 101 communicates with the in-home GW 40, information on the operating state of the air quality improvement device 30, outdoor air quality data indicating outdoor air quality values detected by the outdoor air quality sensor 20, and indoor air Indoor air quality data indicating the indoor air quality value detected by the quality sensor 10 is acquired (S21). The air quality data storage unit 102 stores information regarding the operating state of the air quality improvement device 30 acquired by the GW communication unit 101, outdoor air quality data, and indoor air quality data (S22).

  The evaluation unit 103 determines whether or not the current indoor air quality value is equal to or less than a specified value (S23). The specified value is a predetermined value that is lower than the outdoor air quality value.

  If it is not less than the specified value (NO in S23), the air quality evaluation server 100 repeats the operations after step S21. On the other hand, when it is below the specified value (YES in S23), the evaluation unit 103 determines whether or not the current indoor air quality value has reached the best value (S24). The best value is the best indoor air quality value obtained by the same method as in the first embodiment. In the present embodiment, a predetermined value set in advance based on the best value acquired in the past is used as the best value.

  If the current indoor air quality value has not reached the best value (NO in S24), the air quality evaluation server 100 repeats the operations after step S21. On the other hand, when the best value is reached (YES in S24), the evaluation unit 103 determines whether the air quality improvement device 30 is operating based on the information indicating the current operation state of the air quality improvement device 30. It is determined whether or not (S25). More specifically, the evaluation unit 103 sets the indoor air quality value to the best value after the indoor air quality value becomes equal to or less than a specified value based on the information indicating the operation state of the air quality improvement device 30 stored in the air quality data storage unit 102. It is determined whether or not the air quality improvement device 30 has been operating until it decreases.

  If the air quality improvement device 30 has not been operated (NO in S25), the air quality evaluation server 100 repeats the operations after step S21. On the other hand, when the best value is reached (in the case of YES in S25), the evaluation unit 103 obtains a time t1 until the indoor air quality value decreases from the specified value to the best value (S26).

  The air quality evaluation result storage unit 104 stores the evaluation result time t1 in association with the evaluated building (S27).

3. Air Quality Evaluation Method In the present embodiment, the time t2 until the indoor air quality value decreases from the specified value R to the best value is used as an evaluation index, and the indoor air quality improvement degree of the building is obtained based on the index. . Obtaining the degree of improvement in indoor air quality of a building is also evaluating the air quality maintenance performance of the building. The smaller the value of time t1, the better the air quality improvement and the air quality maintenance performance in the building.

  The indoor air quality value and the outdoor air quality value are acquired continuously over a long period of time, a plurality of times t1 are acquired, an average time of the times t1 for a plurality of times is obtained, and the evaluation is performed based on the average time. You may go. For a sensory grasp of the air quality improvement performance, a value close to the actual environment, for example, a recent average value of outdoor air quality values may be used as the specified value.

  When there is a certain fluctuation during the period from reaching the specified value to the best value (until convergence), and when it is not monotonously decreasing (when a disturbance has occurred), the time obtained t1 is not used as data for evaluation. This is because the occurrence of disturbance is likely due to human activities such as cleaning activities, exercise, and cooking, and in that case the performance of the building cannot be accurately evaluated.

4). Summary In the present embodiment, the evaluation unit 103 defines the indoor air quality value when the air quality improvement device 30 is operated as a degree of improvement in the indoor air quality of the building from the specified value (first predetermined value). A time t1 until the value is reduced to the best value (second predetermined value) smaller than the value (first predetermined value) is obtained.

  As a result, the air quality of the building itself based on the time t1 from when the specified value (first predetermined value) is reduced to the best value (second predetermined value) smaller than the specified value (first predetermined value). Maintenance performance can be evaluated.

  The best value (second predetermined value) is the indoor value output from the indoor air quality sensor 10 when the temporal change rate of the indoor air quality value decreases to a predetermined value when the air quality improvement device 30 is operated. Air quality value.

  Thereby, the air quality maintenance performance of the building itself can be accurately evaluated.

  In addition, when the air quality improvement apparatus 30 is operated as the improvement degree of the indoor air quality in the building, the evaluation unit 103 starts from when the indoor air quality value is reduced to the specified value (first predetermined value). The time until the difference between the specified value (first predetermined value) and the indoor air quality value increases to the predetermined value may be obtained. The predetermined value is, for example, a difference between a specified value (first predetermined value) and a best value (second predetermined value).

  In addition, the evaluation unit 103 determines that the indoor air quality value has decreased to the specified value (first predetermined value) when the air quality improvement device 30 is operated as the indoor air quality improvement level of the building. The time until the temporal change rate of the difference between the indoor air quality value and the specified value (first predetermined value) decreases to a predetermined value may be obtained. The predetermined value is a value close to zero for determining that the temporal change in the difference between the indoor air quality value and the specified value (first predetermined value) has almost disappeared. That is, the predetermined value is a value for determining that the change in the indoor air quality value has almost disappeared. In other words, the predetermined value is a value for determining that the indoor air quality value has been improved and has reached the best value in the steady state.

(Embodiment 3)
In this embodiment, the time until the indoor air quality value decreases from the specified value to the target value is used as an evaluation index, and the indoor air quality improvement level of the building is obtained based on the index.

1. Configuration The hardware configuration of the air quality evaluation system according to the third embodiment is the same as that of the first embodiment. In addition, the program memorize | stored in the memory | storage part 120 of the air quality evaluation server 100 is memorize | stored for implement | achieving the air quality evaluation operation | movement of the air quality evaluation system which concerns on Embodiment 3. FIG.

2. Operation The operation of the air quality evaluation system according to this embodiment will be described with reference to FIGS. FIG. 8 is a diagram for explaining an air quality evaluation method by the air quality evaluation system according to the third embodiment. The vertical axis in FIG. 8 indicates the air quality value, and the horizontal axis indicates time. A larger air quality value indicates a worse air environment. The broken line in FIG. 8 indicates the outdoor air quality value detected by the outdoor air quality sensor 20, and the solid line indicates the indoor air quality value detected by the indoor air quality sensor 10. FIG. 9 is a flowchart for explaining an example of the air quality evaluation operation of the air quality evaluation server 100 of the air quality evaluation system according to the third embodiment.

  In steps S31 and S32, processing similar to that in steps 11 and 12 of the first embodiment is performed. That is, the GW communication unit 101 communicates with the in-home GW 40, information on the operating state of the air quality improvement device 30, outdoor air quality data indicating outdoor air quality values detected by the outdoor air quality sensor 20, and indoor air Indoor air quality data indicating the indoor air quality value detected by the quality sensor 10 is acquired (S31). The air quality data storage unit 102 stores information regarding the operating state of the air quality improvement device 30 acquired by the GW communication unit 101, outdoor air quality data, and indoor air quality data (S32).

  The evaluation unit 103 determines whether or not the current indoor air quality value is equal to or less than a specified value (S33). The specified value is a predetermined value that is lower than the outdoor air quality value.

  If it is not less than the specified value (NO in S33), the air quality evaluation server 100 repeats the operation after step S31. On the other hand, when the value is not more than the specified value (YES in S33), the evaluation unit 103 determines whether or not the current indoor air quality value is not more than the target value (S34). The indoor air quality target value is a target value of the indoor air quality value when air quality is improved. The indoor air quality target value is a preset value.

  If the current indoor air quality value is not less than or equal to the target value (NO in S34), the air quality evaluation server 100 repeats the operations after step S31. On the other hand, if it is equal to or less than the target value (YES in S34), the evaluation unit 103 determines whether the air quality improvement device 30 is operating based on information indicating the current operation state of the air quality improvement device 30. Is determined (S35). More specifically, the evaluation unit 103 sets the indoor air quality value to the target value after the indoor air quality value becomes equal to or less than the specified value based on the information indicating the operation state of the air quality improvement device 30 stored in the air quality data storage unit 102. It is determined whether or not the air quality improvement device 30 has been operating until it decreases.

  When the air quality improvement device 30 has not been operated (NO in S35), the air quality evaluation server 100 repeats the operations after step S31. On the other hand, when it becomes below a target value (in the case of YES at S35), the evaluation unit 103 obtains a time t2 until the indoor air quality value decreases from the specified value to the target value (S26).

  The air quality evaluation result storage unit 104 stores the evaluation result time t2 in association with the evaluated building (S27).

3. Air Quality Evaluation Method In this embodiment, the time t2 until the indoor air quality value decreases from the specified value to the target value is obtained as the indoor air quality improvement level of the building. Obtaining the degree of improvement in indoor air quality of a building is also evaluating the air quality maintenance performance of the building. The smaller the value of time t2, the better the air quality improvement and the air quality maintenance performance in the building.

  In addition, the indoor air quality value and the outdoor air quality value are continuously acquired over a long period (a certain period), a plurality of times t2 are obtained, an average time of a plurality of times t2 is obtained, and the average time is obtained. An evaluation may be performed based on this. For a sensory grasp of the air quality improvement performance, a value close to the actual environment, for example, a recent average value of outdoor air quality values may be used as the specified value.

  The time t2 obtained at this time when it is no longer monotonously decreasing due to fluctuations above a certain level (when disturbance occurs) during the period from reaching the specified value to the target value (until convergence). Is not used as data for evaluation. The occurrence of disturbance is highly likely due to human activities such as cleaning work. In this case, the performance of the building cannot be accurately evaluated, so it is not used as data for evaluation.

4). Summary In the present embodiment, the evaluation unit 103 defines the indoor air quality value from the specified value (first predetermined value) when the air quality improving device 30 is operated as the indoor air quality improvement degree of the building. A time t2 until the target value (second predetermined value) lower than the value (first predetermined value) is obtained. The target value (second predetermined value) is a value that satisfies the predetermined good condition for the air quality inside the building.

  Thus, based on the time t2 until the indoor air quality value decreases from the specified value (first predetermined value) to a target value (second predetermined value) smaller than the specified value (first predetermined value), The air quality maintenance performance of the building itself can be evaluated.

  When the air quality improvement device 30 is operated, the evaluation unit 103 defines the indoor air quality as a degree of improvement in indoor air quality after the indoor air quality value has decreased to a specified value (first predetermined value). You may obtain | require the time until the difference of a value (1st predetermined value) and an indoor air quality value increases to a predetermined value. The predetermined value is, for example, a difference between a specified value and a target value.

(Embodiment 4)
The air quality evaluation system of this embodiment further includes a ventilation state detection device in addition to the configuration of the first embodiment.

1. Configuration FIG. 10 is a diagram showing a configuration of an air quality evaluation system according to Embodiment 4 of the present invention. The air quality evaluation system according to the present embodiment further includes a ventilation state detection device 50 in addition to the configuration of the first embodiment. Note that the programs and data stored in the storage unit 120 of the air quality evaluation server 100 are stored for realizing the air quality evaluation operation of the air quality evaluation system according to the fourth embodiment.

  The ventilation state detection device 50 detects the open / closed state of the opening in the selected section of the building. The ventilation state detection device 50 includes a door opening / closing sensor 51 and a window opening / closing sensor 52. The door opening / closing sensor 51 detects whether or not the door of the building is open. The window opening / closing sensor 52 detects whether or not a building window is open. When the opening of the building is open, outside air containing pollen and fine particles enters the room, and the indoor environment deteriorates. Even if the air purifier 31 and the ventilator 32 are operated in this state, it is not possible to evaluate the quality of air quality (evaluation of building performance). Therefore, when it is detected by the door opening / closing sensor 51 and the window opening / closing sensor 52 that the opening of the building is open, the air quality evaluation is stopped. Even when a ventilation system that does not have an air filter and simply inhales outdoor air is operating, or when an air conditioning system that performs air conditioning by introducing outside air is operating, the object of opening detection It may be. Thereby, the precision of air quality evaluation improves.

  The operation of the air quality evaluation system according to this embodiment will be described with reference to FIGS. FIG. 11 is a diagram illustrating an air quality evaluation method by the air quality evaluation system according to the fourth embodiment. The vertical axis in FIG. 11 indicates the air quality value, and the horizontal axis indicates time. A larger air quality value indicates a worse air environment. A broken line in FIG. 11 indicates an outdoor air quality value detected by the outdoor air quality sensor 20, and a solid line indicates an indoor air quality value detected by the indoor air quality sensor 10. FIG. 12 is a flowchart for explaining an example of the air quality evaluation operation of the air quality evaluation server 100 of the air quality evaluation system according to the fourth embodiment.

  The GW communication unit 101 communicates with the in-home GW 40, information on the operation state of the air quality improvement device 30, outdoor air quality data indicating the outdoor air quality value detected by the outdoor air quality sensor 20, and the indoor air quality sensor 10. The indoor air quality data indicating the indoor air quality value detected in step S1 and the information on the opening state of the opening detected by the ventilation state detecting device 50 are acquired (S41). The air quality data storage unit 102 stores information regarding the operation state of the air quality improvement device 30 acquired by the GW communication unit 101, outdoor air quality data, indoor air quality data, and information regarding the opening state of the opening (S42).

  The evaluation unit 103 determines whether or not the current indoor air quality value is equal to or less than a specified value (S43). The specified value is a predetermined value that is lower than the outdoor air quality value.

  If it is not less than the specified value (NO in S43), the air quality evaluation server 100 repeats the operations after step S21. On the other hand, if it is equal to or less than the specified value (YES in S43), the evaluation unit 103 determines whether or not the current indoor air quality value has reached the best value (S44). The best value is the best indoor air quality value obtained by the same method as in the first embodiment. In the present embodiment, a predetermined value set in advance based on the best value acquired in the past is used as the best value.

  When the current indoor air quality value does not reach the best value (NO in S44), the air quality evaluation server 100 repeats the operations after step S41. On the other hand, when the best value is reached (YES in S44), the evaluation unit 103 determines whether the air quality improvement device 30 is operating based on the information indicating the current operation state of the air quality improvement device 30. It is determined whether or not (S45). More specifically, the evaluation unit 103 sets the indoor air quality value to the best value after the indoor air quality value becomes equal to or less than a specified value based on the information indicating the operation state of the air quality improvement device 30 stored in the air quality data storage unit 102. It is determined whether or not the air quality improvement device 30 has been operating until it decreases.

  If the air quality improvement device 30 has not been operated (NO in S45), the air quality evaluation server 100 repeats the operations after step S41. On the other hand, when the air quality improvement device 30 is operating (YES in S45), the evaluation unit 103 determines that the indoor air quality value is based on the data indicating the ventilation state acquired from the ventilation state detection device 50. It is determined whether or not the opening of the building has been opened between the time when the value is below the specified value and the time when the value drops to the best value (S46). In other words, the evaluation unit 103 determines whether or not the ventilation state detected by the ventilation state detection device 50 is in a predetermined ventilation state in which air flows between the indoor and the outdoor of the building.

  If the opening of the building has been opened (YES in S46), the air quality evaluation server 100 repeats the operations after step S41. That is, even if the conditions of steps S43 to S45 are satisfied, the evaluation unit 103 is configured not to execute the process of step S47 when the opening of the building is open and the garbage enters the room. Yes. On the other hand, if the opening of the building is not open (NO in S46), the evaluation unit 103 obtains the time t1 until the indoor air quality value decreases from the specified value to the best value (S47).

  The air quality evaluation result storage unit 104 stores the evaluation result time t1 in association with the evaluated building (S48).

3. Air quality evaluation method In this embodiment, when the opening of a building is open, the air quality is not evaluated. This is because if the opening of the building is open, dust can enter from outside and the performance of the building cannot be accurately evaluated. According to this embodiment, the indoor air quality can be accurately evaluated by evaluating the air quality in consideration of the open / closed state of the opening of the building.

4). Summary In the present embodiment, the air flow detection device 50 further detects the air flow state between the indoor and outdoor buildings, and the evaluation unit 103 is based on the air flow state detected by the air flow detection device 50. Controls evaluation of indoor air quality improvement.

  Thereby, the indoor air quality can be accurately evaluated by evaluating the air quality in consideration of the open / closed state of the opening of the building.

  The evaluation unit 103 determines whether the ventilation state detected by the ventilation state detection device 50 is in a predetermined ventilation state in which air flows between the indoor and the outdoor of the building, and determines that the ventilation state is in the predetermined ventilation state. If this happens, stop evaluating the indoor air quality improvement of the building.

  Thereby, since the indoor air quality is not evaluated when the opening of the building is open, erroneous evaluation can be reduced.

  In the present embodiment, the configuration in which the ventilation state detection device 50 is added to the configuration of the first embodiment has been described. However, the technical idea of the present embodiment can also be applied to the second and third embodiments.

(Embodiment 5)
In each of the above embodiments, the air quality is evaluated by the air quality evaluation server 100. However, an air quality evaluation apparatus may be provided in the user's building or the like, and the air quality may be evaluated by the air quality evaluation apparatus.

  For example, the home GW 40 is provided with a function for collecting air quality data and the like, and an application program for air quality evaluation is installed in the user's personal computer (PC) or the like. Then, data collected by the home GW 40 may be downloaded to a PC or the like and analyzed by an application program on the PC. The program on the PC may be the same as the program installed in the air quality evaluation server 100.

  Further, the air quality evaluation function may be incorporated in the home GW 40 itself, and the air quality evaluation may be performed in the home GW 40 itself. In this case, the home GW 40 does not have to connect to the air quality evaluation server. The home GW 40 is not a simple gateway, but may have a data storage function, a data analysis / simple air quality evaluation function, a WEB server function, and the like.

(Other embodiments)
In each said embodiment, when the air quality improvement apparatus 30 is act | operating as an indoor air quality value when operating the air quality improvement apparatus 30 used when calculating | requiring the improvement degree of the indoor air quality of a building However, the indoor air quality value is not limited to this. As the indoor air quality value when the air quality improvement device 30 is operated, for example, an indoor air quality value within a predetermined time may be used after the air quality improvement device 30 is operated and stopped. For example, the difference between the indoor air quality value at the time when the air quality improvement device 30 is stopped and the indoor air quality value after the predetermined time has elapsed is substantially equal to the evaluation of the air quality improvement degree. It is a time that does not affect.

  In each of the above embodiments, the case where the building is a detached house has been described. However, the technical ideas of the above embodiments can be applied to buildings other than detached houses. For example, the technical idea of each of the above embodiments can be applied to various buildings such as an apartment, a condominium, and a tenant building.

  When the air quality deteriorates due to the internal environment of the building due to VOC or the like, the indoor air quality is worse than the outdoor air quality, contrary to the air quality deterioration caused by outdoor air pollution or the like. Therefore, the indoor air quality becomes the worst state when a certain period of time has passed after the opening is closed and the air improvement device ventilation or the air purification function is stopped. You may measure time until it becomes a reference value and the best value after becoming this state. In this case, operation control for the air quality improvement device is required for measurement.

  You may control an air quality improvement apparatus based on the evaluation result of air quality. That is, in order to improve the air quality improvement performance, power up may be achieved by operating the air purifying function of the air quality improvement device at the maximum. When the air quality improvement device cannot be controlled, the air quality improvement device may be operated at all times or the automatic control operation function of the air improvement device itself may be used.

DESCRIPTION OF SYMBOLS 10 Indoor air quality sensor 20 Outdoor air quality sensor 30 Air quality improvement apparatus 31 Air cleaner 32 Ventilation apparatus 40 Home GW
DESCRIPTION OF SYMBOLS 50 Ventilation state detection apparatus 51 Door opening / closing sensor 52 Window opening / closing sensor 100 Air quality evaluation server 101 GW communication part 102 Air quality data storage part 103 Evaluation part 104 Air quality evaluation result storage part 105 WEB server part 110 CPU
120 storage unit 130 communication interface

Claims (11)

An outdoor air quality sensor that outputs an outdoor air quality value indicating the outdoor air quality of the building;
An indoor air quality sensor that outputs an indoor air quality value indicating the indoor air quality of the building;
Air quality improving means for purifying indoor air of the building;
Based on the first predetermined value set based on the outdoor air quality value and the indoor air quality value when the air quality improving means is operated, the indoor air quality improvement degree of the building is determined. An evaluation means to obtain,
An air quality evaluation apparatus. The evaluation means, as a degree of improvement in the indoor air quality of the building, when the rate of change over time of the indoor air quality value when the air quality improvement means is activated decreases to a predetermined value. Obtaining a ratio or difference between one predetermined value and the indoor air quality value;
The air quality evaluation apparatus according to claim 1. The evaluation means has a temporal change rate of a difference between the first predetermined value and the indoor air quality value when the air quality improvement means is operated as the indoor air quality improvement degree of the building. Obtaining a ratio or difference between the first predetermined value and the indoor air quality value when reduced to a predetermined value;
The air quality evaluation apparatus according to claim 1. The evaluation means determines the indoor air quality value when the air quality improvement means is operated as the degree of improvement in the indoor air quality of the building from the first predetermined value to the first predetermined value. Find the time to drop to a small second predetermined value,
The air quality evaluation apparatus according to claim 1. The second predetermined value is a target value in which the indoor air quality of the building satisfies a predetermined good condition,
The air quality evaluation apparatus according to claim 4. The second predetermined value is the indoor air quality output from the indoor air quality sensor when the temporal change rate of the indoor air quality value is reduced to a predetermined value when the air quality improving means is operated. Value,
The air quality evaluation apparatus according to claim 4. When the air quality improving means is operated as the indoor air quality improvement degree of the building, the evaluation means is configured to start the operation after the indoor air quality value has decreased to the first predetermined value. Obtaining a time until a difference between one predetermined value and the indoor air quality value increases to a predetermined value;
The air quality evaluation apparatus according to claim 1. In the case where the air quality improvement means is operated as the indoor air quality improvement level of the building, the evaluation means starts from the time when the indoor air quality value has decreased to the first predetermined value. Obtaining the time until the temporal change rate of the difference between the air quality value and the first predetermined value decreases to a predetermined value;
The air quality evaluation apparatus according to claim 1. A ventilation state detecting means for detecting a ventilation state between the indoor and the outdoor of the building,
The evaluation means controls the evaluation operation of the indoor air quality improvement degree of the building based on the ventilation state detected by the ventilation state detection means.
The air quality evaluation apparatus according to any one of claims 1 to 8, wherein The evaluation unit determines whether the ventilation state detected by the ventilation state detection unit is a predetermined ventilation state in which air flows between the indoor and the outdoor of the building, and is in the predetermined ventilation state. When it is determined, stop evaluating the indoor air quality improvement of the building,
The air quality evaluation apparatus according to claim 9. An outdoor air quality sensor that outputs an outdoor air quality value indicating the indoor air quality of the building;
An indoor air quality sensor that outputs an indoor air quality value indicating the outdoor air quality of the building;
Air quality improving means for purifying indoor air of the building;
A server capable of receiving data indicating the outdoor air quality value and data indicating the indoor air quality value via a network;
The server receives the first predetermined value set based on the outdoor air quality value received from the outdoor air quality sensor, and the indoor air quality sensor received when the air quality improvement means is operated. Based on the indoor air quality value, comprising an evaluation means for determining the indoor air quality improvement of the building,
An air quality evaluation system characterized by that.

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