International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 07 Issue: 12 | Dec 2020
p-ISSN: 2395-0072
www.irjet.net
Automatic Control of Power with Energy Saving through Sensor in Smart Home Appliances Amisha S. Patil1, Punam M. Hude2, Prayoshni D. Dere3, Dipali G. Lawankar4, Shubhangi R. Ingle5, Kirti B. Nagne6 1-5Student,
Dept. of Electrical Engineering, DES’S COET, Dhamangaon Rly Dept. of Electrical Engineering, DES’S COET, Dhamangaon Rly ---------------------------------------------------------------------***---------------------------------------------------------------------6Professor,
Abstract - Fan speed is controlled by changing the voltage level across them using triacs which avoids the losses of potentiometer regulators. Many times we leave the room and hall without switching off lights and fans, thus electricity is wasted. If it is six degrees or more below the threshold the fans are turned off. If the natural light intensity is below the preset threshold value then the lights are turned on and vice versa. Room temperature readings are taken from an sensor and compared with the user defined threshold value. This system saves energy by efficient power management of a room which employs certain controlling mechanisms managed by a microcontroller. The mechanisms include light control relative to the natural light intensity in the room, fan control relative to the room temperature and motion detection for determining absence of occupants in the room. Motion detection is achieved by using a sensor. The system reads light intensity level from an voltage divider circuit. At intermediate temperatures the fans run at intermediate speeds. If the readings are above or equal to the threshold value then the fans run at full speed. Lastly, the user defined thresholds are changed using a keypad. If the room stays unoccupied for a preset amount of time the loads are turned off to prevent wastage.
input main voltage of 220v to a variable voltage within 220v to 170v, is used to control a large lighting network and dimming is used to control light intensity. Reference constructed a wireless security control systems & sensor network for smoke and fire detection. They used a smoke detector device that detects smoke & issues an alarm to alert nearby people.
Fig.1.1: Overview of Smart Home Automation Automatic Room light and fan Controller with Visitor Counter can be used in class rooms, study rooms in colleges. When people come to that area, according to the LDR output lighting can be made sufficiently brighter. This work can also be used in our home because many times we come out of our bedroom or any other room without turning off the room light. This work can be used in various rooms like seminar hall, conference hall where the capacity of room is limited and should not be exceeded. At the same time when people are not present in the monitored area the lighting can be made off. By using this system, we can also fine-tune the speed of the Fan depending on the room temperature measured by the temperature sensor. This system also serves us to know about the number of visitors in the monitored area such as a room or office. The objective of our proposed system is to save the energy or power, used in places like an office or room where the lighting is very essential for the people. It is used only when one single person cuts the rays of the sensor hence it cannot be used when two person cross simultaneously. A smoke sensor module is used for detecting any smoke within the room and provides an alert by the audio alarming device. This work will display the actual number of persons inside the room.
Key Words: Energy Saving, LDR, Lm35, Microcontroller, Motion Sensor, PIR. 1. INTRODUCTION Electricity is one of earthshaking resources in this century. It is the major source of power for most of the country's economic activities. Moving towards energy sustainability will require modifications not only in the way energy is supplied, but also in the way it is used as well. Many times we do not turn off the light or fan at the time of deserting the room, thus electricity is wasted. By raising public awareness we can reduce the wastage of electricity. But it is not enforced due to carelessness. In this case we can use home automation system. Home automation is the automatic or semi-automatic control and monitoring of household appliance and residential home features like doors, gate & even the windows. Automatic control refers to any controlling mechanism which does not require any human intervention. In order to save energy Wei Yan and S.Y.R Hui built a system, which has a central energy saving unit that can change the
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