Ambient Light Sensor Schematic Diagram. Simple ambient light sensor circuit. This circuit can be used to automatically control and turn on off lights or any loads depending on the brightness of ambient light by adding a relay at the output.
This system conserves power and extends backlight life by dynamically adjusting the backlight brightness relative to the environment s ambient light. Ambient light is increasingly considered as a source for harvesting energy to power heartbeat monitors bathroom fixtures remote weather sensors and other low power devices. By chau tran and paul mullins download pdf.
The sensitivity a k a the brightness at which the circuit switches on the load can also be controlled by using a potentiometer.
At the heart of an energy harvesting system is the ability to measure ambient light. This is the touch less gestures sensor a hmi human machine interface by swiping your hand over the sensor which controls a computer microcontroller robots or home automotive industrial gesture switching or ambient light and color measuring an. If you are coming here from. A capacitive proximity sensor wakes up the system when a user is close to save even more power.
