|
|
|
|
|
|
by Animats
4255 days ago
|
|
|
Use a laser diode pulsed with pulse width modulation, at perhaps 1KHz, duty cycle < 80%. During the off period, view the hot area with two photodiodes behind different-wavelength IR filters. The ratio between the outputs gives you the temperature. Go closed loop on temperature. |
|
|