- #1
gloria
- 4
- 0
Hi!
I'm trying to design a device to detect eye blinking while a person is sleeping.
I have tried to use TCRT5000 sensor (http://www.vishay.com/docs/83760/tcrt5000.pdf) in the prototype and it works like charm ! However, since the TCRT5000 sensor has an IR emmitter I have some safety concerns regarding the IR exposure of the eyelids (mainly, since the eyes are closed) and the eye itself when he/she blinks.
Consequenty, I would need the following information that we couldn't find in the factsheet:
irradiance (W/m^2), radiant exposure (J/m^2) and radiance (W/(m^2 sr)) using the link about the sensor I provided
I would really appreciated if someone could explain me how to compute it (which formulas i need) using the data I have in the pdf (which data i need)
Moreover, it has to be considered that the person will be exposed to it 8h/day for their lifetime. If you know a way to low the intensity/power of the IR emitter it would be also apreciated.
I'm trying to design a device to detect eye blinking while a person is sleeping.
I have tried to use TCRT5000 sensor (http://www.vishay.com/docs/83760/tcrt5000.pdf) in the prototype and it works like charm ! However, since the TCRT5000 sensor has an IR emmitter I have some safety concerns regarding the IR exposure of the eyelids (mainly, since the eyes are closed) and the eye itself when he/she blinks.
Consequenty, I would need the following information that we couldn't find in the factsheet:
irradiance (W/m^2), radiant exposure (J/m^2) and radiance (W/(m^2 sr)) using the link about the sensor I provided
I would really appreciated if someone could explain me how to compute it (which formulas i need) using the data I have in the pdf (which data i need)
Moreover, it has to be considered that the person will be exposed to it 8h/day for their lifetime. If you know a way to low the intensity/power of the IR emitter it would be also apreciated.