Sir,
I request you to provide the informations of automatic light controller
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"Automatic room light controller with two-way visitor counter" is a reliable circuit that is responsible for controlling the lights of the room, as well as count the number of people / visitors in the room very accurately. When someone enters the room, then the counter increases by one and the light in the room will turn on and when someone leaves the room, then the counter is decremented by one. The light will only turn off until all the people in the room turn off. The total number of people in the room is also displayed on the seven-segment screens. The microcontroller does the previous work. It receives the signals from the sensors, and this signal is operated under the control of the program that is stored in ROM. The SST89E516RD microcontroller continuously monitors the infrared receivers. When any object passes through the IR receiver, then the IR rays that fall on the receivers are clogged. This obstruction is detected by the microcontroller.
In today's world, with the increasing demand for energy and the continued depletion of resources, it is necessary to adopt new measures to save energy whenever possible. With the advent of automation technologies, several methods can be applied to avoid wasting energy. This article proposes an idea to avoid unnecessary consumption of energy in the form of internal electrification of a closed space by closing switches of all appliances in the room that are not used for people who are not present inside the room. This will be a major step towards the energy efficiency of lighting systems by optimizing the use of appliances in a room. This will also lead to lower electricity bills for consumers and in the long run will become a "eystone in modern home automation systems. # We often see visitor counters at the stadium, mall, offices, classrooms, etc. In this case, the design of a digital visitors counter using two pairs of transmitters and receivers of infrared sensors (to detect the entrance and the number of people in a room.
The control of the circuit is done using the Arduino microcontroller and the outputs of the comparators are connected to the digital pins of the arduino section. A display will show the counted number of people inside the room. A relay controller circuit will be Add to getenough voltage and current for the relay.
Related video is here :