Concerned about the baby's breathing, Gjoci, a young Hungarian dad, decided to make a baby monitor. If within 10 seconds, no measurement of the child's movement will alarm.
>>> Video: Laser device sleep monitor of the newborn
Other tracking devices use microphones and capacitive sensors. Gjoci's device recognizes motion by bright spots.
Gjoci's tracking device
A Wiimote camera is responsible for reporting the location of bright spots and a microcontroller that calculates changes to determine the baby's breathing status.
Initially, Gjoci intended to use the LED light but the light was not strong enough and he worried his child would swallow the details. Finally, he decided to use laser light.
The light used by Gjoci is a 4-point laser. As tested, the system works pretty well. The camera will measure the spot brightness almost continuously. If within 10 seconds, no movement is measured (meaning no breathing), the system will alert.
Gjoci said that within two weeks, he had only encountered a few false alarms while the hardware still worked well.
Infants do not move too much, so the laser can not be seen in the eyes. Still, Gjoci is also looking for an absolute security solution.