The automatic classroom lighting controller designed in this project uses natural light intensity and human presence as the main input parameters of the controller. It can realize the compatibility of automatic and manual control. In the natural environment when the light is strong enough light, regardless of the presence of people, do not turn on the lights; in the natural environment when the light is weak, there are people and more than a certain period of time, the controller automatically opens the lights until the person leaves and then delayed for a certain period of time after the lights off. At the same time, but also according to the work and rest time to control, such as more than 11:00 at night, if there are still people there, then close the automatic controller operation, switch to a remote control or mechanical switch to manually control, in order to solve the problem due to the special circumstances, the automatic controller of the inhumane operation.
The classroom lighting automatic controller studied in this project is mainly composed of two major parts: hardware and software. Hardware part is the premise, is the basis of the implementation of the whole system, which mainly provides a platform for the software to run the program. The software part, is the signal embodied in the hardware port, to be collected, analyzed, processed, and ultimately realize the controller to achieve the various functions, to achieve the controller automatically and manually combined classroom lighting intelligent control.