KR102474834B1 - Building management systems including window-mounted environmental sensors - Google Patents

Abstract

The present invention relates to a window-mounted environmental sensor and a building management system, and more particularly to the window-mounted environmental sensor and the building management system, requiring no other management after installation, and detecting an outdoor temperature directly in contact with the inside to use the same for controlling indoor air conditioning. The building management system including the window-mounted environmental sensor includes the window-mounted environmental sensors, a repeater, and a controller.

Description

BUILDING MANAGEMENT SYSTEMS INCLUDING WINDOW-MOUNTED ENVIRONMENTAL SENSORS

The present invention relates to a sensing technology, and more particularly, to a window-mounted environmental sensor and a building management system capable of detecting various types of sensors attached to a window.

Patent Document 1 (“Home appliance control system and method through environmental sensors”) installs environmental sensors indoors and outdoors, respectively, and a home server that receives environmental sensor information acquired by these environmental sensors operates the home appliances.

In addition, Patent Document 2 (“ICT-based indoor environment control method and control system”) provides technologies related to optimization of indoor air quality, such as maintaining appropriate indoor humidity, preventing surface condensation, and improving air quality against fine dust, It provides a technology that can monitor the indoor air quality and control the indoor environment at an appropriate time to minimize energy consumption while maintaining the convenience of residents.

Publication No. 10-2011-0136382, “Home appliance control system and method through environmental sensor” Registered Patent Publication No. 10-1904428, “ICT-based indoor environment control method and control system”

However, in the conventional indoor environment control system, installation and management are difficult and complicated because wiring work is required to install environmental sensors and separate sensors must be installed outdoors and indoors, respectively.

The present invention was derived to solve the problems of the prior art described above, and provides a window-mounted environmental sensor and building management system that can be easily installed and managed at low cost and enables automatic building management by detecting various environmental factors. intended to provide

In addition, the present invention installs environmental sensors for one indoor space, and a repeater installed on the roof of a building receives sensor values from a plurality of environmental sensors and transmits them to the cloud, so that the cloud is based on the sensor values of the environmental sensors and repeaters. Another object is to provide a window-mounted environmental sensor and a building management system that controls various facilities within the system.

In addition, the present invention is to provide a window-mounted environmental sensor and a building management system in which maintenance costs are reduced as the environmental sensor operates at low power and becomes independent of power by a solar panel and does not require other management once installed. for a different purpose.

In addition, the present invention is a window-mounted environment in which outdoor temperature and outdoor illuminance are accurately measured using an external sensor, the measured outdoor temperature and outdoor illuminance are transmitted to an environment sensor, and the environment sensor performs temperature correction and outdoor environment detection. Another objective is to provide sensors and building management systems.

As a means for solving the above problems, a window-mounted environmental sensor according to an embodiment of the present invention includes an outdoor temperature sensor for monitoring outdoor temperature; a room temperature sensor that monitors the room temperature; and a case accommodating the outdoor temperature sensor and the indoor temperature sensor.

In one embodiment, the outdoor temperature sensor may measure the temperature of the glass surface of the window and calculate the outdoor temperature from the measured temperature of the glass surface.

In one embodiment, the window-mounted environmental sensor determines that the window is open when an absolute value of a difference between an outdoor temperature monitored by the outdoor temperature sensor and an indoor temperature monitored by the indoor temperature sensor is equal to or less than a predetermined threshold value. and if it is greater than or equal to a predetermined threshold, it may be determined that the window is closed.

In one embodiment, the transmitter may further include a transmitter wirelessly transmitting the outdoor temperature monitored by the outdoor temperature sensor and the indoor temperature monitored by the indoor temperature sensor.

In one embodiment, an outdoor illuminance sensor for monitoring outdoor illuminance; and an indoor illuminance sensor for monitoring indoor illuminance, and the case may accommodate the outdoor illuminance sensor and the indoor illuminance sensor.

In one embodiment, the case, the first surface facing the outdoors; a second surface facing indoors; and a heat blocking member blocking heat transfer between the first surface and the second surface, wherein the outdoor temperature sensor is disposed on the first surface and the indoor temperature sensor is disposed on the second surface.

In one embodiment, the case may include a first surface facing outdoors and a second surface facing indoors, the outdoor illuminance sensor may be disposed on the first surface, and the indoor illuminance sensor may be disposed on the second surface. have.

In one embodiment, it may further include a water sensor for detecting the amount of water present on the glass surface of the window.

In one embodiment, the window-mounted environmental sensor may further include a motion detector configured to detect a movement of the window-mounted environmental sensor, and the window-mounted environmental sensor may include a detected movement pattern, an outdoor temperature monitored by the outdoor temperature sensor, and the indoor temperature. Whether or not a window is opened may be determined based on a difference in indoor temperature monitored by the temperature sensor.

In one embodiment, a solar panel that generates electricity from sunlight; and a battery pack for storing electricity generated by the solar panel and supplying electricity to the outdoor temperature sensor and the indoor temperature sensor.

As a means for solving the above problems, the building management system according to an embodiment of the present invention, the window-mounted environmental sensor; a repeater for receiving sensing data transmitted from the window-mounted environmental sensor; and a controller controlling at least one of air conditioning and heating equipment, air conditioning equipment, and lighting equipment of a building based on the sensing data received from the repeater.

In one embodiment, the controller may provide an indication of a window opening position when detecting a window opening from the sensing data.

In one embodiment, the controller may control the lighting equipment based on the indoor illuminance and the outdoor illuminance of the sensed data.

In one embodiment, the controller may automatically control opening and closing of the valve of the rainwater tank based on the amount of water on the glass surface of the window of the sensing data.

In one embodiment, it is configured to be attachable to a window facing the outdoors, wirelessly receives power from the window-mounted environmental sensor to generate operating power, and senses the outdoor temperature and outdoor illuminance to detect the outdoor temperature and outdoor illuminance It may further include an external sensor for transmitting to the window-mounted environmental sensor.

The present invention performs various air conditioning controls such as indoor cooling and heating, indoor lights, window opening, and dehumidifier control by detecting various environmental variables such as temperature, humidity, air quality, outdoor environment temperature, and condensation by attaching an environmental sensor to an indoor window. can have the effect of

In addition, the present invention installs environmental sensors for one indoor space, and a repeater installed on the roof of a building receives sensor values from a plurality of environmental sensors and transmits them to the cloud, so that the cloud is based on the sensor values of the environmental sensors and repeaters. It can have the effect of controlling various equipment within.

In addition, the present invention can have an effect of reducing maintenance costs as the environmental sensor operates at low power and becomes independent of the solar panel and does not require other management once installed.

In addition, according to the present invention, the external sensor directly measures the outdoor temperature and outdoor illumination so that the environment sensor receives data on the outdoor environment through the external sensor, corrects the received data, and performs indoor environment control considering the outdoor environment. can have an effect.

1 is an exemplary view showing the configuration of a window-mounted environmental sensor and a building management system according to an embodiment of the present invention.
2 is an exemplary view showing internal and external configurations of an environmental sensor in a window-mounted environmental sensor according to an embodiment of the present invention.
3 is an exemplary view showing an installation environment of a window-mounted environmental sensor according to an embodiment of the present invention.
4 is an exemplary view of operating a window-mounted environmental sensor according to an embodiment of the present invention according to indoor and outdoor temperature and brightness.
5 is an exemplary view of a window-mounted environment sensor detecting raindrops and condensation and operating a dehumidifier according to an embodiment of the present invention.
6 is a diagram showing the configuration of an external sensor according to an embodiment of the present invention.

Hereinafter, a window-mounted environmental sensor and a building management system according to a preferred embodiment of the present invention will be described in detail with reference to the drawings. Hereinafter, descriptions of conventionally known matters are omitted or simplified to clarify the gist of the present invention. The configurations included in the description of the present invention operate in individual or complex combination configurations.

Window-mounted environmental sensors and building management systems can be easily installed without construction/construction, can be used semi-permanently with self-power generation, have energy saving effects, configure environmental information as big data to control air conditioning devices in buildings, It is possible to control heating and cooling using environmental information, and to control lighting using environmental information.

The window-mounted environmental sensor and building management system are environmental information big data, and HVAC automatic control can be built through environmental information. Collect environmental information.

The window-mounted environmental sensor and building management system can be installed without construction/construction, so it can be easily attached/installed on windows and doors, and it is a convenient system that does not require construction/construction and does not require management.

The window-mounted environmental sensor and building management system identify energy loss, check window opening/closing using the indoor/outdoor temperature difference, identify energy loss due to window opening/closing during cooling/heating, and notify the person concerned with an energy loss message and take action. can

The window-mounted environmental sensor and building management system enable automatic control using environmental information, control the heating and cooling system by opening and closing windows, enable optimal lighting dimming control by comparing interior and exterior brightness, and determine indoor air quality. to control ventilation.

The window-mounted environmental sensor and building management system can be used semi-permanently with self-generation, equipped with lithium batteries and solar panels, do not require separate wiring or power, can be used semi-permanently, and have no maintenance costs.

The window-mounted environmental sensor and building management system support communication standards for home/industrial use, and support IFTTT for home use and Modbus TCP for industrial use.

The window-mounted environmental sensor includes an environmental sensor 10 attached to an indoor window; a repeater 20 that receives sensor values from the environmental sensor 10 and transmits them to a cloud server 40 (controller); and detecting at least one of indoor and outdoor temperature, humidity, raindrops, air quality, solar radiation, condensation, fine dust, wind volume, and wind direction based on the sensor value of the environmental sensor 10 or the sensor value of the repeater 20, and brightness It includes a cloud server (40: controller) that transmits various control messages for adjustment, air conditioning control, dehumidification control, rainwater storage, and window opening to the terminal 50 or the building server.

The environmental sensor 10 detects indoor and outdoor environment information for one indoor space in the building, transmits sensor values to the repeater 20 installed on the roof of the building, and the repeater 20 transmits a plurality of environmental sensors in the building. Sensor values are collected from (10), and the collected sensor values are transmitted to the cloud server (40: controller).

The cloud server 40 (controller) performs real-time monitoring and analysis based on the sensor value of the environmental sensor 10 and the sensor value of the repeater 20, generates various control messages, and transmits them to the terminal 50 or the building server. do. The terminal 50 or the building server notifies the person concerned or controls the air conditioner, lighting, dehumidifier, and rainwater storage tank according to the control message of the cloud 40 .

1 is an exemplary view showing the configuration of a window-mounted environmental sensor and a building management system according to the present invention. Referring to FIG. 1, the window-mounted environmental sensor and building management system include an environmental sensor 10, a repeater 20, a network (30), a cloud server (40: controller), and a terminal (50).

The environment sensor 10 is attached to an indoor window, detects any one or more of indoor temperature, outdoor temperature conducted through the window, indoor humidity, air quality, solar radiation, rainfall, and condensation, and transmits the sensor value to the repeater 20. do.

The repeater 20 is installed on the roof of the building, detects any one or more of fine dust, solar radiation, air volume, wind direction, and raindrops, receives a sensor value from the environmental sensor 10, and transmits the received sensor value and the repeater 20 The sensor values of are transmitted to the cloud server 40 through the network 30.

The network 30 may be any one or more of various communication networks such as a wired/wireless communication network, the Internet, a mobile communication network, LoRa, and a local area network.

The cloud server 40 receives sensor values from the environmental sensor 10 or the repeater 20, performs monitoring and analysis based on the sensor values, and provides real-time monitoring and statistical report information to the terminal 50.

2 is an exemplary view showing the internal and external configurations of the environmental sensor in the window-mounted environmental sensor, and the internal configuration of the environmental sensor 10 includes a battery pack 18, a PCB board 191, a transmitter 192, /Includes outdoor temperature sensor (193), humidity sensor (194), air quality sensor (195), CO2 sensor (196), tilt/gyro sensor (197), light emission/receiving sensor (198), heat shield member (199) And, the external components of the indoor surface of the environment sensor 10 include an LED screen 11, a function button 12, and an indoor illuminance sensor 13, and the external components of the glass attachment surface include surface adhesive 14, sunlight It includes a charging panel 15, an outdoor illuminance sensor 16, and a thermal pad 17.

The temperature sensor 193 includes an indoor temperature sensor 1931 and an outdoor temperature sensor 1932 , and the indoor temperature sensor 1931 and the outdoor temperature sensor 1932 are separated by a heat shielding film 199 . The outdoor temperature sensor 1932 measures the temperature of the glass surface of the window and calculates the outdoor temperature from the measured temperature of the glass surface.

In the internal configuration of the environment sensor 10 , the battery pack 18 stores charging power supplied by the solar panel 15 and supplies operating power to the environment sensor 10 . The PCB substrate 191 integrates various electronic components. The transmitter 192 wirelessly transmits the sensor value to the repeater 20, and the temperature sensor 193 senses indoor and outdoor temperatures. Humidity sensor 194 detects indoor humidity, air quality sensor 195 detects air quality, and CO2 sensor 196 detects carbon dioxide concentration.

The motion detection unit 197 includes a tilt/gyro sensor and detects the motion of the window-mounted environment sensor on the xyz axis. For example, in a state where an environmental sensor is attached to a window, it is possible to determine whether the window is open or closed based on a movement pattern (change in an acceleration detection value of the sensor) between the window open state and the window closed state.

The light emitting/receiving sensor 198 detects water droplets and condensation formed on the window using refraction, and the heat blocking member 199 includes a heat blocking film and blocks indoor and outdoor heat conduction.

The indoor surface of the environment sensor 10 may be the second surface 62 facing indoors, and the glass attachment surface may be the first surface 61 facing outdoors.

In the exterior configuration of the indoor surface of the environment sensor 10, the LED screen 11 displays operation information of the environment sensor 10, the function button 12 controls the function of the environment sensor 12, and the indoor illuminance sensor (13) indicates the operation of the environment sensor 10. The environmental sensor 10 displays operation information on the LED screen 11, and the function of the environmental sensor 12 is controlled by pressing the function button 12.

In the configuration outside the glass attachment surface of the environmental sensor 10, the surface adhesive 14 adheres the environmental sensor 10 to the window, and the solar panel 15 performs solar power generation. The outdoor illuminance sensor 16 detects the outdoor illuminance, the rainwater sensor 18 detects water droplets and condensation on the window, and the thermal pad 17 transmits the outdoor temperature transmitted to the window to the temperature sensor 193. convey

The environmental sensor 10 is attached to the glass attachment surface by a surface adhesive 14, and solar power is generated by the solar panel 15 to supply charging power to the battery pack 18. The water sensor 18 detects the presence of water droplets on the window, the amount of water droplets, the presence of condensation, and the amount of water droplets due to the condensation by using the refraction phenomenon, and detects the outdoor temperature with the thermal pad 17. The temperature sensor 193 ) is forwarded to

3 is an exemplary diagram showing an installation environment of a window-mounted environmental sensor. Referring to FIG. 3 , the environmental sensor 10 is attached to an indoor window, detects indoor air quality, carbon dioxide concentration, illumination, condensation, and noise, and transmits sensor values to the repeater 20 .

The repeater 20 is installed on the roof of the building and detects any one or more of fine dust, solar radiation, wind volume, wind direction, and raindrops. The repeater 20 receives sensor values from the environment sensor 10 and transmits the sensor values of the environment sensor 10 and the sensor values of the repeater 20 to the cloud 40 through a wired/wireless communication network. In addition, the repeater 20 functions as a weather station and measures outdoor weather information such as solar heat gain (SHGC) and solar radiation.

4 is an exemplary view of operating a window-mounted environmental sensor according to indoor and outdoor temperatures and brightness.

Referring to FIG. 4, when the environmental sensor (10) detects indoor and outdoor temperatures and transmits the sensor value to the cloud server 40, the cloud server 40 determines whether the window is open based on the sensor value, and the terminal ( 50) informs that a window is open at a certain location so that the person concerned takes action.

When the environmental sensor 10 detects outdoor illumination and transmits the sensor value to the cloud 40, the cloud 40 controls indoor illumination for indoor lighting or building servers based on the outdoor illumination.

The environment sensor 10 is selected as a sleep mode or an operating mode at regular intervals, detects indoor and outdoor temperatures in the operating mode, and transmits the sensor value to the cloud 40, and the cloud 40 transmits the sensor value to the indoor temperature based on the sensor value. If there is a difference between the outside temperature and the outdoor temperature, it is predicted that the window is closed, and if there is little difference between the indoor temperature and the outdoor temperature, it is predicted that the window is open, and the terminal 50 is informed that the window is open, so that the person concerned can enter the room where the window is opened. You can call and tell them to close the windows.

The cloud 40 can determine the location of energy loss by detecting window opening/closing, identify areas with high frequency of ventilation, and reflect the window opening/closing state to the operation of the air conditioner to achieve an energy saving effect.

When the environment sensor 10 transmits the outdoor illuminance value to the cloud 40, the cloud 40 predicts whether the outdoor weather is cloudy or sunny, daytime, or nighttime, and controls indoor lighting to adjust indoor brightness.

5 is an exemplary view in which a window-mounted environmental sensor detects raindrops and condensation and operates a dehumidifier. Referring to FIG. 5 , the environmental sensor 10 detects water droplets and condensation formed on a window and transmits the sensor value to the cloud server 40, and the cloud server 40 transmits the raindrops and condensation to the building server. Command the operation of the installed dehumidifier.

When the environmental sensor 10 detects water droplets and condensation on the window, the cloud server 40 detects a situation in which it is raining outdoors and a situation in which the indoor humidity is high, and may operate an indoor dehumidifier.

In addition, the repeater 20 may detect raindrops to manage air conditioning and rainwater tanks, and the cloud server 40 (controller) may operate a dehumidifier to maintain a comfortable environment when condensation is detected on indoor windows.

The environment sensor 10 determines a state by using the sensor value and performs an algorithm according to the determined state. The environmental sensor 10 performs a detection algorithm according to the increase/decrease setting by applying the interval difference to the sensor value. In the detection algorithm, the sensor value is detected, and the reliability of the secondary sensor value detection is increased by setting an increase/decrease by applying an interval differential for the secondary detection to the primary sensor value level. A sensor signal may be output when a sensor value is sensed and when the sensor value gradually increases or decreases, when the trend of the sensor value intensity gradually increases or decreases, although there is an increase or decrease.

When the detection algorithm is not applied to the environment sensor 10, the cloud server 40 monitors the trend and change of the detection signal over time with respect to the sensor value of the environment sensor 10, and sends a detection message according to the monitoring result. can create

The cloud server 40 may use a neural network, and neural network learning is performed through selection of feature quantities and algorithm selection from time-series data collected from various sensors such as temperature, altitude, and fingerprints, cameras such as images and infrared rays, and input devices such as lidar, and selection of algorithms. is selected, and model selection is repeated through repeated trial and error through learning and performance verification processes. After performance verification is complete, an artificial intelligence model is selected.

The cloud server 40 performs a deep learning algorithm using a neural network to determine a sensor value, uses training data to learn the neural network, and verifies the performance of the neural network with test data.

The cloud server 40 removes data noise by applying filtering to the sensor values, and pre-processes the noise so that it is not applied to the neural network. The cloud server 40 increases the sensing performance of the environmental sensor 10 by preventing noise from affecting the performance of the neural network. For example, the cloud server 40 may use a digital filter for sensor value filtering. The cloud server 40 converts the sensor value into a digital value, calculates a frequency spectrum, and applies the sensor value of a certain frequency interval to the neural network.

The cloud server 40 may measure the neural network performance and change the filtering frequency range of the sensor value to a frequency range having high neural network performance. For example, the cloud server 40 may use PID control to select an optimal filtering frequency interval by calculating a correlation between the neural network performance and the filtering frequency interval. In PID control, it is possible to differentially control the I value corresponding to the leading and trailing integral components of the I value to adapt to the preceding and following sensor values. For example, when a sensor value leads or lags, a change in the I value corresponding to the preceding and a change in the I value corresponding to the following may be applied differently. This is to adapt to the change in performance of the neural network when the sensor value leads and the change in performance of the neural network when the sensor value lags behind.

6 is a diagram showing the configuration of an external sensor according to an embodiment of the present invention.

Referring to FIG. 6 , the external sensor 80 installed outside the window 72 may wirelessly receive power from the environment sensor 10 to generate operating power. The external sensor 80 may detect outdoor temperature and outdoor illumination using the temperature sensing unit 83 and the light sensing unit 84 and transmit the sensor values to the environment sensor 10 . The environmental sensor 10 receives a sensor value from an external sensor 80, corrects its own sensor value, or uses the sensor value of the external sensor 80 to request control based on outdoor temperature and outdoor illumination to the cloud 40. can The external sensor 80 is closely attached to the window 72 by the magnetic force of the magnetic part 81, and can receive wireless power from the environmental sensor 10 by the coil part 82.

The present invention is not limited to the specific preferred embodiments described above, and various modifications can be made by anyone skilled in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes are within the scope of the claims.

10: environmental sensor
11: LED screen
12: function button
13: Operation screen/room light brightness
14: surface adhesive
15: solar panel
16: outdoor illumination sensor
17: thermal pad
18: battery pack
30: network
40: cloud server (controller)
50: Terminal
80: external sensor
191: PCB board
192: transmission unit
193: temperature sensor
194 Humidity sensor
195 air quality sensor
196: CO2 sensor
197: tilt/gyro sensor
198 light emitting/light receiving sensor

Claims (15)

A building management system including a window-mounted environmental sensor attachable to a window,
window-mounted environmental sensors;
a repeater for receiving sensing data transmitted from the window-mounted environmental sensor; and
A controller for controlling at least one of air conditioning and heating equipment, air conditioning equipment, and lighting equipment of a building based on the sensing data received from the repeater.
including,
The window-mounted environmental sensor,
an outdoor temperature sensor that monitors the outdoor temperature;
a room temperature sensor that monitors the room temperature;
an outdoor illuminance sensor that monitors outdoor illuminance;
an indoor illuminance sensor that monitors indoor illuminance; and
A case accommodating the outdoor temperature sensor, the indoor temperature sensor, the outdoor illuminance sensor, and the indoor illuminance sensor
including,
The window-mounted environmental sensor further includes a motion detector for detecting a movement pattern of the window-mounted environmental sensor on an xyz axis based on a change in an acceleration detection value,
The window-mounted environmental sensor determines whether a window is opened based on a detected motion pattern and a difference between an outdoor temperature monitored by the outdoor temperature sensor and an indoor temperature monitored by the indoor temperature sensor;
When the controller detects that the window is open based on the detected motion pattern and the difference between the outdoor temperature monitored by the outdoor temperature sensor and the indoor temperature monitored by the indoor temperature sensor, the energy loss location is determined by the controller. A building management system for controlling the operation of the air conditioning and heating equipment by providing an indication of the window opening position in the building for identification and reflecting the window opening and closing state in the building. According to claim 1,
The building management system of claim 1, wherein the outdoor temperature sensor measures the temperature of the glass surface of the window and calculates the outdoor temperature from the measured temperature of the glass surface. delete According to claim 1,
The window-mounted environmental sensor further comprises a transmitter for wirelessly transmitting the outdoor temperature monitored by the outdoor temperature sensor and the indoor temperature monitored by the indoor temperature sensor. delete According to claim 1,
The case of the window-mounted environmental sensor,
a first side facing outdoors;
a second surface facing indoors; and
A heat blocking member blocking heat transfer between the first surface and the second surface
including,
The outdoor temperature sensor is disposed on the first surface, and the indoor temperature sensor is disposed on the second surface. According to claim 1,
The case of the window-mounted environmental sensor includes a first surface facing outdoors and a second surface facing indoors,
The building management system of claim 1 , wherein the outdoor illuminance sensor is disposed on a first surface, and the indoor illuminance sensor is disposed on a second surface. According to claim 1,
The window-mounted environmental sensor is a building management system further comprising a water detection unit for detecting the amount of water present on the glass surface of the window using a refraction phenomenon. delete According to claim 1,
The window-mounted environmental sensor,
solar panels that generate electricity from sunlight; and
A battery pack that stores electricity generated by the solar panel and supplies electricity to the outdoor temperature sensor and the indoor temperature sensor.
A building management system further comprising a. delete delete According to claim 1,
The controller controls the lighting equipment based on the indoor and outdoor illuminance of the sensed data. According to claim 1,
The window-mounted environmental sensor further includes a water detection unit for detecting the amount of water present on the glass surface of the window,
The building management system of claim 1 , wherein the controller automatically controls operation of the air conditioning equipment based on the amount of water on the glass surface of the window detected by the water detector. According to claim 1,
Further comprising an external sensor attached to a window facing the outdoors at a position corresponding to the window-mounted environmental sensor and detecting outdoor temperature and outdoor illumination;
The external sensor,
a coil unit wirelessly receiving power from the window-mounted environmental sensor and generating operating power; and
Magnetic part generating magnetic force acting on the window-mounted environmental sensor
Including,
The external sensor detects outdoor temperature and outdoor illuminance and transmits the sensed outdoor temperature and outdoor illuminance to the window-mounted environmental sensor.

Images