Presentation Information
[O12-P48]"Ohayo-san (Good morning)" - Creating a device to support a pleasant awakening -
*Yukina Minami1, *Mana Watanabe1, *Mititaka Sakai1 (1. Kanagawa Prefectual Sagamihara Yaei High School)
Keywords:
Weather,Waking up,llluminance
1. Introduction
We are working on developing a device called "Ohayou-san" (Good Morning), which supports a pleasant awakening by emitting light and music tailored to the weather conditions at the time of wake-up, or by moving curtains to let in natural light.
2. How the device works
Wang et al. (2025) proved that exposure to natural light for 20 minutes before getting up improves wakefulness.
Hatta (2018) showed that pre-wake gradual illuminance (a lighting control method that simulates dawn by starting to dimly turn on artificial lighting about 30 minutes before the set wake-up time, gradually increasing its output, and reaching maximum output at the set wake-up time) improves the quality of waking up, and that body temperature stabilization is observed at a maximum illuminance of 2500 lx. Kitado (2005) states that light with a color temperature of 5000K or higher is effective in stabilizing body temperature and reducing drowsiness.
If the observed illuminance was less than 2500 lux, the LED lights were gradually increased starting 30 minutes before waking up, so that the illuminance would reach 2500 lux and 5000K or higher by the time of waking up. If the illuminance was 2500 lux or higher, the curtains were opened starting 20 minutes before waking up.
McFarlane et al. (2020) showed that a frequency of around 500Hz, a tempo of approximately 100-120 BPM, and an easy-to-hum melody are suitable for a comfortable awakening. Use a melody within this range as your alarm tone.
3. Development Status
Currently, the system is in the prototype stage using a model(Figure1). The micro:bit element 14 (hereinafter referred to as micro:bit) is wirelessly connected to a PC, while the operating equipment is connected via wired connections. The user inputs how many hours later they want to wake up via the micro:bit. The micro:bit's light sensor measures the illuminance 30 minutes before the wake-up time. If the illuminance is less than 2500 lux, the LED lights are gradually turned on starting 30 minutes before the wake-up time, so that it reaches 2500 lux by the wake-up time. If the illuminance is 2500 lux or higher, the system opens the curtains 20 minutes before the wake-up time to let in natural light(Tabel1). In addition, among the music set as the default melody on the micro:bit, "Ode to Joy" has a BPM of approximately 120,261Hz to 440Hz, which is close to the melody shown by McFarlane et al. (2020), so it was set as the alarm sound for the prototype.
4. Future Outlook
We haven't been able to conduct many experiments to determine whether the illuminance and music settings on the device are sufficient for a comfortable awakening. We would like to conduct longer-term testing of waking up. We also want to investigate whether the instruments used for the alarm sound affect the comfort of waking up. In this study, we only used illuminance as a weather condition. As we complete the device, we would like to improve it so that it can support a pleasant awakening under other weather conditions as well.
5.References
Mako Hokudo(2005) Creating an environment for quality sleep - Relaxation before bedtime and the use of light -, Journal of the Society of Biomechanisms Japan,29,194-198.
Stuart J. McFarlane, Jair E. Garcia, Darri n S. Verhagen, G. Dyer (2020) Auditory C ountermeasures for Sleep Inertia: Exploring the Effect of Melody and Rhythm in a n Ecological Context. Clocks & Sleep, 2, 208-224.
Xiaorui Wang, Yangcheng Gu, Jihui Yuan, Da isuke Matsushita (2025) Natural light con trol to improve awakening quality.Build ing and Environment, 273, 2-20.
Kazuhiro Hatta(2018) Required Conditions in which Dawn Simulation Brings Better Awakening and Daytime Activity. Doctoral dissertation, Kyoto Institute of Technology, ANo. 871,107p.
Note: BookThis research was conducted as part of a basic science and mathematics inquiry class, and was entered into the 14th High School/Technical College Meteorological Observation Equipment Contest, with support from the WNI Meteorological Culture Creation Center.
We are working on developing a device called "Ohayou-san" (Good Morning), which supports a pleasant awakening by emitting light and music tailored to the weather conditions at the time of wake-up, or by moving curtains to let in natural light.
2. How the device works
Wang et al. (2025) proved that exposure to natural light for 20 minutes before getting up improves wakefulness.
Hatta (2018) showed that pre-wake gradual illuminance (a lighting control method that simulates dawn by starting to dimly turn on artificial lighting about 30 minutes before the set wake-up time, gradually increasing its output, and reaching maximum output at the set wake-up time) improves the quality of waking up, and that body temperature stabilization is observed at a maximum illuminance of 2500 lx. Kitado (2005) states that light with a color temperature of 5000K or higher is effective in stabilizing body temperature and reducing drowsiness.
If the observed illuminance was less than 2500 lux, the LED lights were gradually increased starting 30 minutes before waking up, so that the illuminance would reach 2500 lux and 5000K or higher by the time of waking up. If the illuminance was 2500 lux or higher, the curtains were opened starting 20 minutes before waking up.
McFarlane et al. (2020) showed that a frequency of around 500Hz, a tempo of approximately 100-120 BPM, and an easy-to-hum melody are suitable for a comfortable awakening. Use a melody within this range as your alarm tone.
3. Development Status
Currently, the system is in the prototype stage using a model(Figure1). The micro:bit element 14 (hereinafter referred to as micro:bit) is wirelessly connected to a PC, while the operating equipment is connected via wired connections. The user inputs how many hours later they want to wake up via the micro:bit. The micro:bit's light sensor measures the illuminance 30 minutes before the wake-up time. If the illuminance is less than 2500 lux, the LED lights are gradually turned on starting 30 minutes before the wake-up time, so that it reaches 2500 lux by the wake-up time. If the illuminance is 2500 lux or higher, the system opens the curtains 20 minutes before the wake-up time to let in natural light(Tabel1). In addition, among the music set as the default melody on the micro:bit, "Ode to Joy" has a BPM of approximately 120,261Hz to 440Hz, which is close to the melody shown by McFarlane et al. (2020), so it was set as the alarm sound for the prototype.
4. Future Outlook
We haven't been able to conduct many experiments to determine whether the illuminance and music settings on the device are sufficient for a comfortable awakening. We would like to conduct longer-term testing of waking up. We also want to investigate whether the instruments used for the alarm sound affect the comfort of waking up. In this study, we only used illuminance as a weather condition. As we complete the device, we would like to improve it so that it can support a pleasant awakening under other weather conditions as well.
5.References
Mako Hokudo(2005) Creating an environment for quality sleep - Relaxation before bedtime and the use of light -, Journal of the Society of Biomechanisms Japan,29,194-198.
Stuart J. McFarlane, Jair E. Garcia, Darri n S. Verhagen, G. Dyer (2020) Auditory C ountermeasures for Sleep Inertia: Exploring the Effect of Melody and Rhythm in a n Ecological Context. Clocks & Sleep, 2, 208-224.
Xiaorui Wang, Yangcheng Gu, Jihui Yuan, Da isuke Matsushita (2025) Natural light con trol to improve awakening quality.Build ing and Environment, 273, 2-20.
Kazuhiro Hatta(2018) Required Conditions in which Dawn Simulation Brings Better Awakening and Daytime Activity. Doctoral dissertation, Kyoto Institute of Technology, ANo. 871,107p.
Note: BookThis research was conducted as part of a basic science and mathematics inquiry class, and was entered into the 14th High School/Technical College Meteorological Observation Equipment Contest, with support from the WNI Meteorological Culture Creation Center.