Đang tải... (xem toàn văn)
Automatic night light control system needs no manual operation for switching ON and OFF when there is need of light. It detects itself whether there is need for light or not. When darkness rises to a certain value then automatically light is switched ON and when there is other source of light i.e. day time, the light gets OFF.
Report Final Project EE472 Introduction: I Automatic night light control system needs no manual operation for switching ON and OFF when there is need of light It detects itself whether there is need for light or not When darkness rises to a certain value then automatically light is switched ON and when there is other source of light i.e day time, the light gets OFF In the project we use light detecting resistor as a light sensor for detection of high level or low level of voltage to energize the RELAY coil which is used to interface the control circuit with the external light source II Problems and Methods: The circuit automatically turns ON a night lamp when bedroom light is switched OFF The lamp remains “ON” until the light sensor senses day light in the morning A white LED is used as the night lamp It gives bright and cool light in the room When the sensor detects the daylight in the morning, a melodious morning alarm sounds The circuit utilizes light dependent resistors (LDRs) for sensing darkness and light in the room III Hardware and Software: IV Discussions and Future Plans: Automatically light system( Hybrid Switch) provides several advantages such as decreasing the energy consumption, saving time and costs in the life as well as other problems The system only actives when it is dark or not enough light degree for using some daily activities Due to its stability, the Hybrid Switch can support for future development which is controlled by flexible clapping sound This is a strong ideal And to help to develop that we need to learn more knowledge about real time in the freeRTOS and study more detail information about LM3S8962 V Conclusion: Through the detection of the light dependent resistors(LDRs) and the action of the relay, the level of light is changed from dark to bright and converting again More detail presentation, the result is shown by turning on or off light automatically It is also possible to correct the various parameters through the controller programming and one will get the required information at its need and necessary change in the action can be implemented in the software on the spot VI • Recommendation: After this research, we learned real time in the FreeRTOS and learned more detail algorithms in LM3S8962 kit,… • VII However, because of our limitation of knowledge, we cannot have the best model of Hybrid Switch References: [1] [2] [3] [4] Advantages The major advantage of a lighting control system over stand-alone lighting controls or conventional manual switching is the ability to control individual lights or groups of lights from a single user interface device This ability to control multiple light sources from a user device allows complex lighting scenes to be created A room may have multiple scenes pre-set, each one created for different activities in the room A major benefit of lighting control systems is reduced energy consumption Longer lamp life is also gained when dimming and switching off lights when not in use Wireless lighting control systems provide additional benefits including reduced installation costs and increased flexibility over where switches and sensors may be placed.[3] Automated Control