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3. Multisensor Sleep Monitoring System
In order to try to determine the relationship between environment data and sleep structure
and performance, a prototype was developed to monitor the diverse variables that allow
the characterization of the sleep environment: temperature, humidity, light intensity,
noise and air quality. Figure 2 outlines the developed prototype model.
Figure 2. Multisensor sleep monitoring system architecture.
The acquisition of data is based on an Arduino microcontroller, Arduino MEGA
2560, which receives data from diverse sensors of temperature, humidity, light, sound
and various sensors of the MQ series: carbon monoxide gas (MQ-7), propane gas (MQ-
2), natural methane gas (MQ-4), liquefied isobutane propane gas (MQ-6), air quality
(MQ-135) and carbon dioxide gas (MG811). Table 2 presents a description of the sensors
considered for the characterization of the sleep environment.
Table 2. Sensors used to characterize sleep environment
Sensor Description Specification
DHT22 Temperature and
humidity sensor Temp. range: -40 to 80 ; resolution: 0.1 ; error: 0.5
Hum. range: 0-99.9RH; resolution: 0.1%RH; error: ±2%RH
Sound level Analog sound sensor Max.input sound level: 115 dB
Sensitivity: -56 dB (standard)
Light Light Sensor Brick Photoresistor: 5-10 kohm (light intensity: 10lux)
MQ-2 Smoke Gas LPG Butane
Hydrogen Sensor Detectable concentration: 300-10000ppm
Gas sensing material: SnO2
MQ-4 Natural Gas Methane
Gas Sensor Module Detectable concentration: 300-10000ppm
Gas sensing material: SnO2
MQ-6 Liquefied Isobutane
Propane Sensor Module AO output: 0.1-0.3V (relatively clean), the highest
concentration of voltage around 4V
MQ-7 Carbon Monoxide Coal
Gas Sensor Module Detection of concentration: 10-1000ppmCO
AO output :0.1-0 .3 V (relatively clean), the highest
concentration of voltage around 4V
MQ-135 Air Quality Sensor
Detection Module Sensing resistance: 30K -200K (100ppm NH3)
Detecting concentration scope: 10ppm-300ppm (NH3,
Alcohol), 10ppm-1000ppm (Benzene)
MG811 Gas CO2 Carbon
Dioxide Sensor Module Analog output 30~50mV, 350 - 10000 ppm CO2
Through a Bluetooth communication module (Bluetooth HC-06), the Arduino
microcontroller sends the data received from the sensors to an android smartphone that,
C.Gonçalvesetal. /MultisensorMonitoringSystem toEstablishCorrelations 29
Intelligent Environments 2019
Workshop Proceedings of the 15th International Conference on Intelligent Environments
- Title
- Intelligent Environments 2019
- Subtitle
- Workshop Proceedings of the 15th International Conference on Intelligent Environments
- Authors
- Andrés Muñoz
- Sofia Ouhbi
- Wolfgang Minker
- Loubna Echabbi
- Miguel Navarro-CĂa
- Publisher
- IOS Press BV
- Date
- 2019
- Language
- German
- License
- CC BY-NC 4.0
- ISBN
- 978-1-61499-983-6
- Size
- 16.0 x 24.0 cm
- Pages
- 416
- Category
- Tagungsbände