Indoor Air Monitoring System

Abstract

To provide a room air monitoring system which incorporates and arranges a plurality of sensors in a wall surface outlet and monitors room environment by utilizing the sensors.SOLUTION: A room air monitoring system comprises: a sensor device 1 configured by incorporating an air measurement sensor 11 with a CO2 sensor and an information transmission unit 12 which transmits measurement data of the air measurement sensor 11 to the outside in a wall surface outlet 10 which is installed on a wall surface to supply power to an electric device; and a monitoring device body 3a including a monitoring device CPU 35 which determines a state of the air and controls a specific device on the basis of the measurement data of the sensor device 1, and a sound notification unit 32 which notifies generation of an abnormality. The monitoring device CPU 35 causes the specific electric device to execute a predetermined operation when it is determined that CO2 concentration exceeds a first predetermined threshold.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention , room This invention relates to an indoor air monitoring system that monitors indoor air. [Background technology]

[0002] 2. Description of the Related Art There is an indoor air monitoring system that detects an indoor air environment, compares it with preset environmental conditions, and issues a warning to improve the air environment if it deviates from the preset range. For example, in Patent Document 1, a sensor for detecting the air environment, an environment determination unit, a display unit for displaying the determination results, and the like are incorporated into a single housing, and the device is configured to be portable. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2006-97907 Summary of the Invention [Problem to be solved by the invention]

[0004] The above-mentioned conventional system is configured to be portable, so it can be easily moved and one system can monitor the environments of multiple rooms. However, even within a single room, the temperature varies from place to place. This can be greatly affected by factors such as the wind direction of air conditioning equipment. To solve this problem, it would be possible to install a fixed indoor air monitoring system and install sensors in multiple locations, but installing sensors in multiple locations to collect information is not easy due to the cumbersome wiring involved.

[0005] In view of the above problems, the present invention provides a method for detecting a temperature by using a plurality of sensors in a room. The device can be easily installed, and the installed sensor device The object is to provide an indoor air monitoring system for monitoring the indoor environment. [Means for solving the problem]

[0006] In order to solve the above problem, the invention of claim 1 a monitoring device including a plurality of sensor devices each having an air measurement sensor and an information transmission unit for transmitting measurement data from the air measurement sensor to the outside, the sensor devices being incorporated into a wall outlet that supplies power to an electrical appliance; a determination unit for determining the state of the air based on measurement data obtained from the sensor device; a notification unit for notifying the occurrence of an abnormality; a floor plan information storage unit for storing the indoor floor plan including position information of windows and doors; a display for displaying an image of the floor plan; a display control unit for controlling the display on the display; and a first window information storage unit for storing combinations of the locations of the sensor devices and the windows and doors to be opened; the air measurement sensors are a temperature sensor, a CO 2 At least one CO sensor and humidity sensor 2 The monitoring device is provided with a CO 2 CO measured by the sensor 2 When it is determined that the concentration exceeds a predetermined first threshold, the notification unit performs a notification operation, and the display control unit reads information on the location of the sensor device that has exceeded the first threshold from the first window information storage unit based on the location information of the sensor device that has exceeded the first threshold, and displays the location information of the sensor device and the information on the location of the sensor device that has exceeded the first threshold on the display. Let's say. With this configuration, the sensor device is built into the wall outlet, so the sensor can be installed simply by installing the wall outlet, eliminating the need to consider where to install the air measurement sensor. Furthermore, the power source for the sensor device can be secured from the power line connected to the wall outlet, making it easy to secure power. Furthermore, since the wall outlet is installed at a relatively low position on the wall, the built-in CO2 sensor can effectively detect CO2, which tends to gather at low positions. And indoor CO 2 When the concentration reaches a certain level, an alarm sounds, making it easy for residents to recognize the situation. 2 It is possible to identify areas with high concentrations and to exchange the air effectively. .

[0007] The invention of claim 2 is as follows: The monitoring device comprises at least one sensor device that is incorporated into a wall outlet that supplies power to an electrical appliance and that includes an air measurement sensor and an information transmission unit that transmits measurement data from the air measurement sensor to the outside, a determination unit that determines the air condition based on measurement data obtained from the sensor device, a notification unit that notifies of the occurrence of an abnormality, a floor plan information storage unit that stores the indoor floor plan including position information of windows and doors, a display that displays the floor plan as an image, a display control unit that controls the display on the display, an external sensor that is installed outdoors to detect at least the wind direction among wind direction, wind force, and temperature, and a second window information storage unit that stores the wind direction and a combination of windows and doors that are to be opened, and the air measurement sensor is a temperature sensor, a CO 2 At least one CO sensor and humidity sensor 2 The monitoring device is provided with a CO 2 CO measured by the sensor 2 When it is determined that the concentration exceeds the predetermined first threshold, the notification unit performs a notification operation, and the display control unit 2 When it is determined that the sensor measurement value exceeds the first threshold, the combination of locations to be opened is read from the second window information storage unit based on wind direction information obtained from the external sensor, and the information on the locations to be opened is displayed on the display together with the floor plan information. With this configuration, the sensor device is built into the wall outlet, so the sensor can be installed simply by installing the wall outlet, eliminating the need to consider where to install the air measurement sensor. Furthermore, the power source for the sensor device can be secured from the power line connected to the wall outlet, making it easy to secure power. Furthermore, since the wall outlet is installed at a relatively low position on the wall, the built-in CO2 sensor can effectively detect CO2, which tends to gather at low positions. And indoor CO 2 When the concentration reaches a certain level, an alarm sounds, making it easy for residents to recognize the situation. 2 The location of the window to be opened in response to an increase in CO concentration is displayed on the screen, so by opening the indicated window, 2 It is possible to operate windows that are effective in reducing .

[0008] The invention of claim 3 In the configuration according to claim 1 or 2, the information transmitting unit transmits the measurement data by PLC communication using a branch wiring connected to a wall outlet. It is characterized by: According to this configuration, Data is transmitted via PLC communication via branch wiring installed in the wall outlet, so no separate communication lines are required.

[0009] The invention of claim 4 is Either 1 or 3In the described configuration, the threshold value of the CO2 concentration determined by the determination unit includes a first threshold value as well as a second threshold value having a higher CO2 concentration than the first threshold value, and when it is determined that the CO2 concentration threshold value exceeds the second threshold value, the alarm unit performs an alarm operation different from the first threshold value. According to this configuration, when the CO2 concentration in the room reaches a second threshold, which is higher than the first threshold, an alert different from the alert issued when the first threshold is exceeded is issued, so that the occupants can recognize that the CO2 concentration has increased further.

[0013] Claim 5 The invention is Either 1 or 4 In the described configuration, the monitoring device is formed separately into a monitoring device main body equipped with a judgment unit and a display control unit, and a display terminal that can be carried by the resident and is equipped with a display, and the monitoring device main body and the display terminal communicate with each other wirelessly, and floor plan information is transmitted wirelessly from the monitoring device main body to the display terminal. This configuration is convenient because the resident can check the floor plan information that is displayed and controlled by the monitoring device on a portable display terminal. [Effects of the Invention]

[0015] The present invention According to Because the sensor device is built into a wall outlet, the sensor can be installed simply by installing a wall outlet, eliminating the need to consider where to install the air measurement sensor. Furthermore, the power for the sensor device can be secured from the power line connected to the wall outlet, making it easy to secure power. Furthermore, because the wall outlet is installed at a relatively low position on the wall, the built-in CO2 sensor can effectively detect CO2, which tends to gather at low positions. In addition, indoor CO 2 When the concentration reaches a certain level, an alarm sounds, making it easy for residents to recognize the situation. 2 It is possible to recognize areas of high concentration. [Brief explanation of the drawings]

[0016] [Figure 1] 1 is a schematic diagram illustrating an example of an indoor air monitoring system according to the present invention. [Figure 2] FIG. 2 is an explanatory diagram of a sensor device. [Figure 3] FIG. 2 is a block diagram of a monitoring device. [Figure 4] 10 is a flowchart showing a control flow. [Figure 5] FIG. 2 is a diagram illustrating a display and a display terminal. [Figure 6] FIG. 2 is a diagram illustrating a display and a display terminal. [Figure 7] FIG. 2 is a diagram illustrating a display and a display terminal. [Figure 8] FIG. 2 is a diagram illustrating a display and a display terminal. DETAILED DESCRIPTION OF THE INVENTION

[0017] Embodiments of the present invention will be described in detail below with reference to the drawings. Fig. 1 is a schematic diagram showing an example of an indoor air monitoring system according to the present invention. In Fig. 1, 1 denotes a sensor device installed indoors, 2 denotes an external sensor installed outdoors, 3 denotes a monitoring device (monitoring device main body 3a and display terminal 3b) that monitors the air condition, 4 denotes a ventilation fan control device that controls a ventilation fan 4a, 5 denotes an air conditioner control device that controls an air conditioner 5a, and 6 denotes a stove control device that controls a stove 6a. The display terminal 3b can be a mobile device with a display unit 7, such as a smartphone or tablet terminal carried by the resident.

[0018] Fig. 2 is an explanatory diagram of the sensor device 1. As shown in Fig. 2, the sensor device 1 is incorporated into a wall outlet 10 having an outlet 10a to which a power plug (not shown) is connected. The wall outlet 10 incorporates an air measurement sensor 11 and an information transmission unit 12 that transmits measurement data.

[0019] The air measurement sensor 11 is composed of a CO2 sensor, a temperature sensor, a humidity sensor, etc., which are all incorporated into the wall outlet 10. The information transmitting unit 12 performs PLC communication with the monitoring device 3 via a branch wiring (not shown), which is a power line connected to the wall outlet 10, and transmits measurement data to the monitoring device 3. The power source for driving the sensor device 1 is supplied from the branch wiring.

[0020] The external sensor 2 is composed of a wind sensor that detects wind direction and wind force, a temperature sensor that measures air temperature, a rain sensor that detects rain, and the like.

[0021] In this way, since the sensor device 1 is incorporated into the wall outlet 10, installation of the sensor device 1 is completed once the wall outlet 10 is installed, and there is no need to consider where to install the sensor device 1. Furthermore, power for the sensor device 1 can be secured from the power line connected to the wall outlet 10, making it easy to secure power. Furthermore, since the wall outlet 10 is attached to a relatively low position on the wall, the built-in CO2 sensor can effectively detect CO2, which tends to gather at low positions. Furthermore, since data is transmitted via a branch wiring provided in the wall outlet 10, no separate communication line is required.

[0022] Fig. 3 shows a block diagram of the monitoring device main body 3a. As shown in Fig. 3, the monitoring device main body 3a includes a display 31 that displays various information, an alarm unit 32 that issues alarms and sounds messages, a memory unit 33 that stores measurement data, set thresholds, floor plan information including information on windows and doors, and information on the installation location of the sensor device 1, an operation unit 34 that switches the display and settings of the display 31, a monitoring device CPU 35 that controls the monitoring device main body 3a, a sensor communication unit 36 ​​that receives measurement data transmitted from the sensor device 1 via PLC via the power line, a communication unit 37 that communicates with the controlled device and the display terminal 3b, and a power supply unit 38. The display 31 and the sound alarm 32 constitute a notification unit. The memory 33 has a first window information memory 33a that stores information relating the location of the sensor device 1 to windows and doors, and a second window information memory 33b that stores information relating the wind direction and weather to open windows and doors.

[0023] The monitoring device CPU 35 of the monitoring device main body 3a controls and operates as a judgment unit and equipment control unit, monitoring the temperature / humidity in the room as well as the CO2 concentration, and if the CO2 concentration exceeds a set threshold, it performs control to lower the CO2 concentration. The devices to be controlled, namely, the ventilation fan 4a, the air conditioner 5a, and the stove 6a, are controlled by their respective control devices (ventilation fan control device 4, air conditioner control device 5, and stove control device 6) communicating with the monitoring device main body 3a. Communication between the monitoring device main body 3a and the control devices 4, 5, and 6, and the display terminal 3b is carried out by short-range wireless communication such as Bluetooth (registered trademark).

[0024] The operation of the indoor air monitoring system configured as above is as follows. Fig. 4 is a flowchart showing the flow of control of the indoor air monitoring system when the detected CO2 concentration rises, and will be described with reference to Fig. 4. The threshold is set at two levels: a concentration level that requires ventilation (first threshold) and an even higher concentration level that may affect the human body (second threshold), and the following operations are performed under the control of the monitoring device CPU 35.

[0025] The monitoring device main body 3a periodically acquires CO2 concentration information from the sensor device 1 (S1), first compares it with a second threshold value (S2), and if it does not exceed the second threshold value, compares it with the first threshold value (S3). If it determines that the first threshold value has been exceeded, the alarm unit 32 emits an alarm sound such as a buzzer for a certain period of time, and starts the ventilation fan 4a (S5) to replace the air in the room. At this time, the monitoring device main body 3a sends an activation signal to the ventilation fan control device 4, and the ventilation fan 4a starts. After that, the system waits for a certain period of time (for example, 5 minutes) to pass (S7), and if the CO2 concentration falls below the first threshold during that time (Yes in S6), it outputs a reset signal to stop the activated ventilation fan 4a (S14), and ends the control.

[0026] On the other hand, if the concentration does not decrease after a certain time has passed (Yes in S7), a control signal to increase the airflow is output to the air conditioner 5a, increasing the air circulation speed and encouraging air exchange. Also, if the space heater 6a is operating, a stop signal is output to the space heater 6a to stop it (S9), and control is implemented to reduce the amount of CO2 generated. After that, after waiting for a certain time (for example, 10 minutes) (S10), if the CO2 concentration drops (Yes in S11), a reset signal is output, the air conditioner 5a and the stove 6a are returned to the state before control (S15), and the control ends.

[0027] If the concentration does not decrease even after the heater 6a is stopped (No in S11), an instruction is issued to open a window or the like for ventilation. Specifically, wind direction information is acquired from the external sensor 2 (S12), the optimal window or the like for ventilation is selected, and a floor plan is displayed on the display 31 to indicate where it can be opened (S13). At the same time, the alarm unit 32 issues a message urging the user to open the window. This ends the control, and the process returns to the start to wait for new measurement values.

[0028] Figure 5 shows the display on the display 31 and the display terminal 3b at this time. In Figure 5, A1 and A2 indicate the locations (doors and windows) instructed to open, and A3 indicates the detected wind direction. Under the control of the monitoring device CPU 35, the windows and doors associated with the wind direction are read from the second window information storage unit 33b of the storage unit 33 based on the wind direction information from the external sensor 2, and this information is displayed on the floor plan image. The display on the display 31 is a color display, and the areas instructed to open, such as A1 and A2, are displayed in red or other colors to make them easy to recognize. In this way, as shown in Figure 5, information on the areas that should be opened based on wind direction information is displayed on the floor plan of the room.

[0029] This information is then wirelessly transmitted from the communication unit 37 of the monitoring device main body 3a to the display terminal 3b, and the same information is displayed on the display unit 7 by a predetermined operation of the display terminal 3b. Therefore, the resident can recognize information such as the location to be opened from the information displayed on the display terminal 3b located close to the resident, and there is no need to go to the trouble of going to the display 31 of the monitoring device main body 3a to look at it, which is very convenient.

[0030] If there is no improvement in the CO2 concentration after that even though a window or the like is opened, or if the situation continues in which the window is not opened in response to the notification, the second threshold value will eventually be exceeded (Yes in S2). In such a case, an alarm sound different from the alarm sound issued when the first threshold value was exceeded is emitted (S4), and the display 31 and the display unit 7 of the display terminal 3b display an indication that an abnormality has occurred. 6 shows the display on the display 31 and the display terminal 3b at this time. In this way, it is displayed that the CO2 concentration is an abnormal value.

[0031] If the humidity detected by the humidity sensor provided in the sensor device 1 exceeds a first humidity threshold set as an upper limit, the dehumidification function of the air conditioner is turned on. If the humidity becomes dry and falls below a second humidity setting set as a lower limit, an audible alarm sounds to prompt the user to humidify the room. In addition, in this embodiment, when the CO2 concentration exceeds the first threshold, a buzzer sounds and electrical equipment (devices) such as a ventilation fan is controlled, and when the second threshold is exceeded, an alarm sounds and an indication is given on the display 31, but no device control is performed, but device control may be added. The content of the alarm when each threshold is exceeded, the device to be controlled and its operation, and the indication on the display 31 are optional and may be changed depending on the layout of the space to be monitored, the set CO2 concentration threshold, etc. Even if the buzzer operation and controlled equipment are the same, by changing the volume and tone, the airflow of the ventilation fan, and the content displayed on the display 31 depending on whether the first threshold is exceeded or the second threshold, residents can recognize that the CO2 concentration has increased further.

[0032] In this way, an alarm is issued when the CO2 concentration exceeds the first threshold, allowing residents to recognize that the CO2 concentration is high. Then, by operating the ventilation fan 4a to replace the indoor air and increasing the airflow of the air conditioner 5a, CO2 concentration reduction control can be performed automatically, eliminating the need for residents to manually take separate measures to lower the CO2 concentration. In addition, when the CO2 concentration exceeds the first threshold, a message urging the user to open a window is sounded, and the location of the window to be opened is displayed on the display 31. By opening the specified window, the user can operate the window that is effective in reducing CO2 emissions, thereby preventing the air quality from deteriorating. Furthermore, if the CO2 concentration exceeds a second threshold, which is higher than the first threshold, the display 31 will indicate that the CO2 concentration is an abnormal value, allowing the occupants to recognize that the CO2 concentration has not decreased but has become even higher.

[0033] Figure 7 shows the display 31 and the display terminal 3b when there is no external sensor 2. In the case of an indoor air monitoring system that does not have an external sensor 2, if an abnormal CO2 concentration is detected, a message is displayed urging the user to open the window or door closest to the location where the detection occurred, as shown in Figure 7. The sensor devices 1 are installed in four locations as shown in Figure 7, and A4 indicates the location of the sensor device 1 that detected the abnormal CO2 concentration, and is displayed as a red circle or the like for easy identification. The monitoring device CPU 35 reads information about the windows and doors associated with the sensor device 1 in the A4 area from the first window information storage unit, and displays the information on the floor plan image. In this way, when there is no external sensor and wind direction information cannot be obtained, the open location is displayed along with the location of the sensor device 1 that performed the detection. This makes it possible to identify locations with high CO2 concentrations and to effectively exchange air.

[0034] 8 shows the display on the display 31 and the display terminal 3b under other conditions. Specifically, it shows the display when multiple sensor devices 1 are performing detection operations, or when the external sensor 2 is measuring rain, and a specific window cannot be specified. In such a display, the wind path is displayed with an arrow shown in A5 to make it easier for the resident to recognize. When rain is being measured, information on associated windows and doors is obtained from the second window information storage unit 33b. As shown in Figure 8, if multiple sensor devices 1 detect an abnormality or if it is raining, a display will be displayed to encourage opening many areas, allowing for quick air exchange or smooth air exchange without having to open the areas widely.

[0035] In the above embodiment, the thresholds (first threshold, second threshold) are simply detected concentrations, but they may also be determined based on the average concentration over a certain period of time, or the rate of change in concentration may be grasped, and if there is a sudden increase, control similar to that which would occur if the threshold were reached may be initiated even if the threshold is not reached. Furthermore, two-stage control is performed by setting two thresholds, but control may be performed using only the first threshold without setting the second threshold. In addition, if the condition where the first threshold is exceeded continues, the display 31 and display terminal 3b will instruct the location to open based on external wind direction information to encourage air exchange, but external information such as wind direction may not be necessary, and an announcement simply urging air exchange may be made. Furthermore, the monitoring device 3 is composed of a monitoring device main body 3a and a display terminal 3b, and floor plan information and the like is displayed on the display terminal 3b in addition to the display 31 of the monitoring device main body 3a, but the floor plan information may be displayed on only one of them, and when the display terminal 3b is used, the display 31 may be eliminated, and when the display 31 is used, the display terminal 3b may be eliminated. Furthermore, when an abnormality is detected, control is first performed to notify the user, and then, or at the same time, equipment control is performed afterwards. However, equipment control may be performed without notifying the user. For example, when the CO2 concentration exceeds the first threshold, the ventilation fan 4a may be turned on without notifying the user. Furthermore, the number of sensor devices 1 to be installed may be one. [Explanation of symbols]

[0036] 1·· Sensor device, 2·· External sensor, 3·· Monitoring device, 3a·· Monitoring device main body, 3b·· Display terminal, 4·· Ventilation fan control device, 4a·· Ventilation fan, 5·· Air conditioner control device, 5a·· Air conditioner, 6·· Stove control device, 6a·· Stove, 7·· Display unit (display), 10·· Wall outlet, 11·· Air measurement sensor, 12·· Information transmission unit, 31·· Display (alarm unit), 32·· Sound alarm unit (alarm unit), 33·· Memory unit (floor plan information memory unit, window information memory unit), 35·· Monitoring device CPU (determination unit, equipment control unit, sound alarm control unit, display control unit, window selection unit), 37·· Communications unit

Claims

1. A plurality of sensor devices each including an air measurement sensor and an information transmission unit that transmits measurement data of the air measurement sensor to an external device, the sensor devices being incorporated into a wall outlet that supplies power to an electrical device; a monitoring device including a determination unit that determines the state of the air based on the measurement data obtained from the sensor device, a notification unit that notifies of the occurrence of an abnormality, a floor plan information storage unit that stores the indoor floor plan including the position information of windows and doors, a display that displays an image of the floor plan, a display control unit that controls the display of the display, and a first window information storage unit that stores the location of the sensor device and a combination of windows and doors to be opened; the air measurement sensor includes at least a CO 2 sensor among a temperature sensor, a CO 2 sensor, and a humidity sensor; When the determination unit determines that the CO 2 concentration measured by the CO 2 sensor exceeds a predetermined first threshold, the monitoring device causes the notification unit to perform a notification operation. The display control unit reads information about the location to be opened from the first window information storage unit based on the location information of the sensor device that has exceeded the first threshold, and displays the location information of the sensor device and the information about the location to be opened together with the floor plan information on the display.

2. At least one sensor device that is incorporated into a wall outlet that supplies power to an electrical device and that includes an air measurement sensor and an information transmission unit that transmits measurement data from the air measurement sensor to the outside; a monitoring device including a determination unit that determines the state of the air based on the measurement data obtained from the sensor device, a notification unit that notifies of the occurrence of an abnormality, a floor plan information storage unit that stores the indoor floor plan including the position information of windows and doors, a display that displays an image of the floor plan, a display control unit that controls the display of the display, an external sensor installed outdoors to detect at least the wind direction among wind direction, wind force, and temperature, and a second window information storage unit that stores the wind direction and a combination of windows and doors to be opened; the air measurement sensor includes at least a CO 2 sensor among a temperature sensor, a CO 2 sensor, and a humidity sensor; When the determination unit determines that the CO 2 concentration measured by the CO 2 sensor exceeds a predetermined first threshold, the monitoring device causes the notification unit to perform a notification operation. The indoor air monitoring system is characterized in that, when the determination unit determines that the measurement value of the CO2 sensor exceeds the first threshold, the display control unit reads a combination of locations to be opened from the second window information storage unit based on wind direction information obtained from the external sensor, and displays information on the locations to be opened together with the floor plan information on the display.

3. An indoor air monitoring system as described in claim 1 or 2, characterized in that the information transmission unit transmits the measurement data to the outside via PLC communication using branch wiring connected to the wall outlet.

4. The threshold value of the CO 2 concentration determined by the determination unit has, in addition to the first threshold value, a second threshold value having a CO 2 concentration higher than the first threshold value; The indoor air monitoring system according to any one of claims 1 to 3, characterized in that, when the determination unit determines that the CO 2 concentration threshold has exceeded the second threshold, the monitoring device causes the notification unit to perform a notification operation different from the first threshold.

5. The monitoring device is formed separately into a monitoring device main body having the determination unit and the display control unit, and a display terminal that can be carried by a resident and has the display, 5. The indoor air monitoring system according to claim 1, wherein the monitoring device main body and the display terminal communicate with each other wirelessly, and the floor plan information is transmitted wirelessly from the monitoring device main body to the display terminal.

Images