Figure 1.
System block diagram
Figure 2.
Infrared reflection module
Figure 3.
Connection circuit between IR sensor and STM32
Figure 4.
Rectifier voltage regulator circuit
Figure 5.
Relationship among subroutines
Figure 6.
Brightness detection subroutine
Figure 7.
Human body detection subroutine diagram
Figure 8.
Main program flow
Figure 9.
The photo of the system
Figure 10.
The ambient light is below the set value
Figure 11.
The ambient light intensity is too high